Metal sheet shaping system

Sheet metal forming system

The present invention provides a metal sheet forming system, and more particularly to a metal forming system suitable for metal shell pressure forming.

Due to the global sales of 3C information products and high-end home appliances, metal casings have long been the basic equipment for many products. Generally, the conventional metal forming methods can be mainly divided into three types: press forming, vacuum forming or high pressure forming, and the one shown in Fig. 1 is a schematic structural view of a conventional metal sheet forming system.

The mold 11 of the conventional sheet metal forming system 10 includes a sealing mold 111 and a molding die 115, and the molding die 115 is placed on a table 19. The sealing die 111 has a sealing cavity 112 and a gas transmission hole 175 therein, and a molding cavity 116 is disposed in the molding die 115. An electric heating tube 13 is disposed around the sealing mold 111 and the molding die 115. The electric heating tube 13 applies a high temperature heating to the mold 11 and the metal sheet 15 placed in the mold 11. When the temperature of the metal sheet 15 reaches a set temperature, the high pressure gas generator 171 will generate a high pressure gas 179 and be transferred into the sealed chamber 112 via the gas pipe 173 and the gas transmission hole 175, and the high pressure gas 179 will be heated and softened. The metal sheet 15 is subjected to a gas pressure Pa, and causes the softened metal sheet 15 to adhere to the inner surface of the molding cavity 116 under the action of the gas pressure Pa, thereby forming a metal molded piece 155.

The high pressure gas 179 of the conventional sheet metal forming system is introduced into the sealed chamber At 112 o'clock, only the fixed force of the table 19 or the clamping force of the mold 11 against the gas pressure Pa generated by the high pressure gas 179 in the sealed chamber 112 easily causes the high pressure gas 179 to leak out, thereby affecting the metal molded part 155. Molding speed or molding quality.

Further, if the conventional metal sheet 15 is directly heated in the mold 11 at room temperature, it is necessary to wait until the set temperature is applied to apply the high-pressure gas 179, and the heating waiting time will affect the mass production of the metal molded piece 155. speed.

Another conventional sheet metal forming system preheats the metal sheet 15 outside the mold 11, and then puts the heated metal sheet 15 into the mold 11 to continue heating and press molding, thereby saving the amount of the metal molded piece 155. Production speed. However, since the heated metal sheet 15 moves into the mold 11, the temperature of the metal sheet suddenly drops, and then is heated again, and the temperature of the metal sheet is lowered, which easily affects the molding of the metal molded part 155. quality.

Conventional sheet metal forming systems have disadvantages such as easy damage to the outer surface of the product, difficulty in forming the molding speed, poor production yield, or inaccurate metal outer surface, and additional secondary processing. Therefore, the molding system of the conventional metal sheet has a space for improvement.

The main purpose of the present invention is to provide a metal sheet forming system which can be used not only to increase the forming speed and production yield of the metal molded part, but also to improve the surface effect of the metal molded part.

A further object of the present invention is to provide a metal sheet forming system which is applicable to a wide variety of metal materials, thereby expanding its production range.

Another object of the present invention is to provide a metal sheet forming system in which a high pressure gas is introduced into a sealed chamber, and the lifter continuously presses the mold, thereby allowing the mold to be closely clamped without high pressure gas. The disadvantage of deflation, so it can effectively improve the molding quality of metal molded parts.

Another object of the present invention is to provide a metal sheet forming system in which a metal sheet continues to increase its heating temperature before being pressurized by a high pressure gas, and the high pressure gas also increases the gas pressure in a segmented mode, thereby not only It can increase the production speed of metal molded parts and improve the molding quality of metal molded parts.

In order to achieve the above object, the present invention provides a metal sheet forming system, which mainly comprises: a mold forming area, a sealing mold and a molding die, and a sealing cavity and one or a plurality of gas transmission holes are arranged in the sealing mold. The molding die is provided with a molding cavity, and the molding die can enter and exit the molding area of the mold, and after entering the molding zone of the mold, it will be defined as a working molding die, and the sealing die and the working molding die can be combined into one die; one or a plurality of heaters Provided at the periphery of the mold, the mold can be heated, and the sealing mold has a preset working temperature; a heating zone outside the mold is provided with a waiting mold and a heater outside the mold, and the heater outside the mold can wait The forming mold is heated and causes the forming mold to have a temperature outside the mold; one or a plurality of moving units can move the waiting forming mold from the outer heating zone of the mold into the molding area of the mold, and let the forming mold become the work Molding die a unit for placing a metal sheet on a top side end of a waiting mold that has been removed from the outer heating zone of the mold, and the metal sheet is moved into the mold forming area along with the waiting mold; a fluid supply unit is connected Sealing a gas transmission hole of the mold, and introducing a high-pressure fluid guide into the sealing cavity through the gas transmission hole, the high-pressure fluid will provide a fluid pressure to the metal plate; and a control unit can be respectively connected to the heater and the mold Heater, transfer unit, feed unit or fluid supply unit.

Moreover, in order to achieve the above object, the present invention further provides a metal sheet forming system, which mainly comprises: a mold comprising a sealing mold and a forming mold, the distance between the forming mold and the sealing mold can be changed, and the sealing mold is changed. The utility model is provided with a sealing cavity and one or more gas transmission holes, wherein a molding cavity is provided in the molding die, and a top side end of the molding die can be used for placing a metal plate, and the metal plate material is located between the molding die and the sealing die; Provided at a periphery of the mold to heat the mold; a fluid supply unit connecting the gas supply holes of the sealing mold, and a high pressure fluid guide can be introduced into the sealed chamber through the gas transmission hole, the high pressure fluid The metal sheet is supplied with a fluid pressure when the mold is closed; a lifting unit carries the forming mold, and the mold is brought into a clamping state or a partial mold state by driving the lifting mold to be lifted and lowered, and the lifting unit The mold will be continuously driven close to the sealing mold when the mold is closed, and a pushing pressure is provided for the mold, and the pushing pressure will be greater than the fluid pressure; and a control unit can Are respectively connected to the lifting unit, the fluid supply unit and / or a heater.

First, please refer to FIG. 2, which is a schematic structural view of an embodiment of the present metal sheet forming system. As shown, the present sheet metal forming system 20 mainly includes a mold 21, a heater 23, a lifting unit 30, a fluid supply unit 40, and a control unit 50. The control unit 50 can connect and control the heater 23, the lift unit 30, and/or the fluid supply unit 40.

The mold 21 includes a sealing die 211 and a molding die 215. The sealing die 211 is provided with a sealing cavity 212 and a gas transmission hole 213. The molding die 215 is provided with a molding cavity 216. The fluid generator 41 of the fluid supply unit 40 can be connected to the gas transmission hole 213 via a gas pipe 43 and can transfer the high pressure fluid 49 generated by the fluid generator 41 to the seal through the gas pipe 43 and the gas transmission hole 213. Inside the cavity 212.

In an embodiment of the present invention, the sealing die 211 is a fixed mold fixed at the same position, and the molding die 215 is placed on the upper end of the elevator 31 to which the lifting unit 30 belongs, between the molding die 215 and the sealing die 211. The distance will be changeable. As the lifter 31 is lifted and lowered, the molding die 215 of the mold 21 and the sealing die 211 are brought into a mold clamping (state) or a partial mold (state), and the mold clamping state is shown in the drawing. .

The top end of the molding die 15 can be used to place a metal plate 65, which can be selected from a stainless steel, copper, aluminum, magnesium alloy, titanium alloy, aluminum-magnesium alloy, nickel-based superalloy, tungsten, molybdenum and/or Or a variety of thin metal shells such as cobalt.

A heater 23 is disposed around the periphery of the mold 21, such as a high-frequency heater 231 and/or an electric heating tube 235 shown in the drawings, which surround the periphery of the sealing mold 211 and/or the molding die 215, respectively. Heater 23 can be used in pairs The mold 21 is subjected to a heating process, and the metal sheet 65 existing between the sealing mold 211 and the molding die 215 is indirectly heat-treated by the heating action of the mold 21.

The heating temperature of the heater 23 can be adjusted depending on the type of the metal plate 65. For the more commonly used metal sheet 65, the heating temperature is about 180 ° C ~ 650 ° C, but not limited thereto.

When the mold 21 is in the mold clamping state, the fluid supply unit 40 will continuously supply the high pressure fluid 49 into the sealed chamber 212, thereby forming a fluid pressure (air pressure) Pa on the upper surface of the metal sheet 65. In order to prevent the mold 21 from being opened or deflated due to the fluid pressure Pa in the sealed chamber 212, when the fluid supply unit 40 continues to supply the high pressure fluid 49, the lift 31 will continue to push the forming die 215 toward the sealing die 211. And moving, its rising thrust will also generate a pushing pressure Po on the mold 21. The fluid pressure Pa generated by the high-pressure fluid 49 and the push-up pressure Po generated by the elevator 31 will cause the heated and softened metal sheet 65 to be pushed toward the inner layer of the molding cavity 216, and finally become a certain type of metal molded part 67. As shown by the dotted line.

The high pressure fluid 49 can be a high pressure gas or a high pressure liquid, with high pressure gas being preferred. The high-pressure gas (49) can be directly used as an inert gas such as a general gas, air, helium (Hi) or neon (Ne), or as a nitrogen gas (N).₂) An inert gas. In this creation, the high pressure gas (49) may be between 150 Bar and 400 Bar, but not limited thereto.

The elevator 31 can be selected as a hydraulic press or a pneumatic press, and a hydraulic press is preferred. In this creation, the hydraulic tonnage (31) can use an output tonnage of about 80 tons to 240 tons, but not limited to this.

In a preferred embodiment of the present invention, during the molding of the metal molded part 67, the control unit 50 will control the push-up pressure Po generated by the lifter 31 to continue to be greater than the fluid pressure Pa generated by the high-pressure fluid 49. The push-up pressure Po will be greater than the fluid pressure Pa, and the push-up pressure value (Po) is greater than about 10% to 40% of the fluid pressure value (Pa), especially greater than the fluid pressure value (Pa). 18% to 27% is the best.

Furthermore, please refer to FIG. 3, which is a schematic structural view of still another embodiment of the present invention. The present sheet metal forming system 20 may further include an outer mold heating zone 24, a transfer unit 61 and a feed unit 60, all located beside the mold 21.

In order to increase the mass production speed and production yield of the metal molded part 67, the sealing mold 211 can be fixed and maintained at a predetermined working temperature T1, and the metal plate 65 in a mold forming area 200 is pressurized in the mold 21. During the molding process, the outer mold heating zone 24 can be placed with another molding die (which can be referred to as a waiting molding die 2155), while waiting for the molding die 2155 to be externally heated by a die outer heater 25 and heated to a The outside temperature of the mold is T2. The outer mold heater 25 is selected as an electric heating tube 255 and/or a high frequency heater 251.

When the metal forming member 67 in the mold forming region 200 has been formed, a moving unit 61 will remove the metal forming member 67 and the forming mold being used for forming (which may be referred to as a working forming mold 2151) out of the mold. Outside the molding zone 200, as shown in the lower right side of the figure, it is placed in an atmospheric environment or a cooling tank 70. At this time, the waiting molding die 2155 is moved by the action of the loading unit 61 to move into the mold forming zone 200 and the mold 21. Waiting During the movement of the mold 2155, another metal sheet 65, which has been at room temperature, is shown in the upper left side of the drawing, and is moved to the top of the forming mold 2155 by a feeding unit 60. The surface is moved to the upper end side of the elevator 31 together with the waiting molding die 2155 to become the next working molding die 2151.

In this embodiment, both the feeding unit 60 and the moving unit 61 can be connected to the control unit 50, and under the control of the control unit 50, the metal sheet 65 is moved at an appropriate time, waiting for the forming mold 2155, and the working forming mold 2151. And/or a metal molded part 67. Of course, the feeding unit 60 and the loading unit 61 can be selected as an independently operated robot arm, a rotating disc, or an operator to manually move.

Since the metal sheet 65 of the present invention is in a room temperature unheated state before being moved to wait for the top end of the molding die 2155, it is indirectly heated after being placed in the waiting molding die 2155, and immediately waits for molding. The die 2155 is moved to the upper end of the elevator 31, and is further heated by the heater 23 of the mold 21. During the moving, heating and press forming process of the metal sheet 65, the sheet temperature T3 is steadily increased or maintained at a constant temperature without sudden temperature drop and heating again, and therefore, the metal molded part 67 thereof The molding quality will be superior to the conventional metal molded parts (155).

Further, in order to allow the waiting molding die 2155 to be moved to the mold forming region 200, the preset working temperature T1 which is the same as or similar to that of the sealing die 211 can be quickly reached. To this end, in one embodiment, the outer temperature of the molding die 2155 is waited for. T2 will be greater than the preset operating temperature T1. Waiting for the molding die 2155 to be subjected to heat absorption by the metal plate 65 and the atmosphere during the movement, which will be higher The warm outer mold temperature T2 is slightly lowered to be the same as or similar to the lower temperature preset operating temperature T1, whereby the heating action of the heater 23 in the mold 21 can be facilitated.

In one embodiment, the lifting unit 30 includes an elevator 31 and a lifting server 35. The lifting server 35 can be respectively connected to the elevator 31 and the control unit 50, controlled by the control unit 50, and the lifting server 35 can be activated. And the rise or fall of the elevator 31 is controlled.

The fluid supply unit 40 of the present invention includes a fluid generator 41 and a fluid server 45. The fluid server 45 will be respectively connected to the control unit 50 and the fluid generator 41, and controlled by the control unit 50 to determine the fluid generation. The high pressure fluid 49 is supplied to the sealed chamber 212 or the high pressure fluid (49) in the sealed chamber 212 is removed from the sealed chamber 212.

In still another embodiment of the present invention, a pattern layer 217 may be directly disposed on the inner surface of the molding die (2151/2155), and the pattern layer 217 is a pattern, a line, and a shape which may exist on the outer surface of the metal molding 67. , glossy, matte, text and/or other content representations. When the metal sheet 65 is heated and the fluid pressure Pa is applied, it can be pressed against the inner wall surface of the working mold 2151 to hit the pattern layer 217 having a concave-convex design, which can also be pressed against the surface of the pattern layer 217. Thus, after press molding and demolding, the designed pattern, line, shape, glossy surface, matte surface, text or other content representation can appear on the outer surface of the metal molded part 67.

Next, please refer to FIG. 4, which is a schematic structural view of another embodiment of the present invention. In order to improve the rapid prototyping of the metal formed parts and increase the amount of capacity, a carrier is provided at the upper end of the elevator 31 of the present invention. 315, a heater, such as the electric heating tube 235 of the drawing, may be disposed in the carrier 315. One or more guide rails 316 are further disposed on the upper surface of the bearing seat 315, and a rail groove 219 is disposed on the bottom side of the molding die 215 (the working molding die 2151 and the waiting molding die 2155). The guide rail 316 and the rail groove 219 can be engaged with each other, so that the molding die 215 can be easily slid or moved on the carrier 315, whereby the moving unit 61 can be formed after the metal molding 67 is press-formed. The mold 2151 is quickly taken away from the mold forming zone 200 together with the metal forming member 67, and can be directly connected to the next process, such as a metal post-processing program such as cooling, cooling, demoulding, or tempering. The next waiting molding die 2155 can also be quickly brought into the mold forming zone 200 to become the next working molding die 2151, and combined with the sealing die 211 into a mold 21.

Of course, the rails 316 and the rail grooves 219 that are engaged with each other can also be changed in position. In other words, the rails 316 are disposed on the bottom side of the molding die 215, and the rail grooves 219 are disposed in the carrier 315.

Moreover, in another embodiment, the inner surface of the molding die 215 is also provided with a core 27, and the upper surface of the core 27 may be a smooth surface or provided with a pattern layer 217. When the metal sheet 65 is heated and pressed, the softened metal sheet 65 can be pressed against the upper surface of the core 27 or the pattern layer 217 to become a metal molded piece 67.

Moreover, in order to allow the metal plate 65 of the sealing cavity 212 to be quickly and uniformly subjected to the pressure of the fluid pressure Pa, a plurality of air holes 213, 2135 are bored in the sealing die 211, and the side air holes 2135 can be Directly connected to the central air vent 213 or directly connected to the gas delivery pipe 43 Let the inside of the sealed chamber 212 quickly achieve the purpose of boosting or equalizing.

Moreover, in another embodiment, since the mold 21 generates a high temperature of several hundred degrees Celsius when heated, in order to protect the elevator 31, a heat insulating seat 317 may be disposed between the lifter 31 and the molding die 215, and the heat insulating seat 317 is disposed. A cooling tube or water path 318 may also be provided to effect the temperature isolation of the elevator 31 from the forming die 215 by the action of the insulating seat 317 and/or the water path 318.

Please refer to Fig. 5, which is a schematic diagram of the structure of the cooling groove of the original sheet metal forming system. After the metal forming member 67 is formed, the moving unit (61) will carry the forming die 215 (i.e., the working forming film 2151) together with the metal forming member 67 away from the mold forming zone (200), and place it in a cooling bath 70. . The cooling tank 70 has a plurality of condensing tubes 73 passing through the inside thereof, so that the cooling tank 70 can be maintained at a certain low temperature. The low temperature of the cooling bath 70 can directly lower the molding die 215 and indirectly lower the temperature of the metal molding 67, thereby protecting the surface integrity of the metal molding 67 and accelerating the purpose of cooling and demolding the metal molding 67. The condenser 73 can be selected as a water passage or a line through which the condensate W1 passes.

In one of the embodiments shown in the drawings, the condenser tube 73 will pass through the bottom side of the cooling bath 70. For example, the condensing pipe on the upper right side is supplied with the condensate W1 from the condensing pipe position point 73A, and passes through the condensing pipe position point 73A of the front end face of the drawing through the bottom side of the cooling groove 70 to the rear end face, and the condensing pipe 73 is in the cooling groove 70. The rear end face is then bent down to the condenser tube position point 73B as indicated by the dashed line. The condensate W1 passes through the bottom side of the cooling tank 70 to the front end surface via the condensation tube position point 73B of the rear end surface, and the condensation tube 73 is further directed to the front end surface of the cooling tank. The upper portion is bent to the front end surface condenser tube position point 73C as indicated by the solid line. The condensate W1 passes through the bottom side of the cooling tank 70 to the rear end surface via the condensing pipe position point 73C of the front end surface, and then passes to the front end surface of the condensing pipe position point 73Z, and then the condensate W1 is discharged from the condensing pipe 73. .

Similarly, if the cooling tank 70 is selected to have a plurality of condensing tubes 73, the other cold water W2 can be input from the upper left condensing tube position point 735A and sent to the lower right side condensing tube position point 735Z.

In still another embodiment of the present invention, the cooling tank 70 may also be designed without the design of the condensation tube 73, as long as a coolant or a liquid 75 is placed in the tank, and the molding die 215 is placed after the coolant or liquid. 75 can flow around the periphery of the molding die 215, whereby the surface integrity of the metal molding 67 can be protected, and the purpose of cooling and demolding the metal molding 67 can be accelerated.

In addition, please refer to FIG. 6 , which is a molding flow chart of an embodiment of the present metal sheet during molding. As shown in the figure, and please refer to Figure 2 at the same time, the creation of the metal is included in the molding:

In step S601, the control unit 50 controls and activates the heater 23, and the heater 23 directly heats the mold 21 in the mold opening state, and continues to heat until the mold 21 has reached a predetermined operating temperature T1.

In step S602, the metal plate 65 is moved by a feeding unit 60 (as shown in Fig. 3) and placed on the top side end of the molding die 215, and the heater 23 continues to directly heat the mold 21.

In step S603, the control unit 50 will control and activate the lifting unit 30, and the elevator 31 will move the molding die 215 toward the sealing die 211. To complete the mold clamping process of the mold 21. At this time, the metal plate 65 is interposed between the sealing mold 211 and the molding die 215, and the heating action of the heater 23 is indirectly obtained via the sealing die 211 and the molding die 215.

The fluid supply unit 40 starts to supply a high pressure fluid 49 to the sealed chamber 212 via the gas pipe 43 and the gas delivery hole 213 when the mold 21 is closed or when the lift 31 is activated, and generates a high pressure fluid 49 in the sealed cavity 212 and on the surface of the metal plate 65. Fluid pressure Pa. The lift 31 of the lifting unit 30 also drives the forming die 215 to continuously rise, and generates a pushing pressure Po to the die 21, and the pushing pressure Po will be greater than the fluid pressure Pa (Po>Pa). Since the push-up pressure Po generated by the lifter 31 will be greater than the fluid pressure Pa generated by the high-pressure fluid 49, the drawback of the gas leakage of the mold 21 due to the fluid pressure Pa can be avoided.

In step S604, the push-up pressure Po generated by the elevator 31 and the fluid pressure Pa generated by the high-pressure fluid 49 are individually performed in a stepwise incremental mode, and the fluid pressure Pa also causes the heated and softened metal sheet 65 to be pressed against the molding. In the mold 215, it is formed into a metal molded piece 67. The metal molded part 67 has been formed.

In step S605, the control unit 50 drives the elevator 31 of the controllable lifting unit 30 to move the forming die 215 and the metal forming member 67 downward to move away from the sealing die 11, that is, a mold opening process.

In step S606, after the metal molding 67 is cooled to a predetermined temperature, the metal molding 67 can be taken out from the molding die 215 to complete the metal molding.

This creation step S604 adopts a segment increment mode for metal formation. Type pressurization procedure, as shown in Figure 7. The working time at which the metal sheet 65 is heated and pressed to form the metal forming member 67 can be defined as a molding period, for example, t0 to t8. The control unit 50 will control the molding period including one or a plurality of changing periods (tc; t0~t1, t2~t3, t4~t5, and t6~t7) and one or more stagnant periods (ts; t1~t2, t3) ~t4, t5~t6 and t7~t8). During the first change period tc (t0~t1), the control unit 50 will control the fluid pressure Pa to increase to a preset fluid pressure value 437 (Pa1), and the push-up pressure Po may be increased to a preset push-up. Pressure value 397 (Po1). During the first stagnant period ts (t1~t2), the preset fluid pressure value Pa1 and the preset push pressure value Po1 are controlled to be maintained at a fixed value, and the pressure on the metal plate 65 is continuously applied.

If, due to the material properties of the metal sheet 65, there is a next change period tc (t2~t3) immediately after the first stagnation period ts(t1~t2), the fluid pressure is in the second change period tc. Pa will increase to another preset fluid pressure value Pa2, and the push-up pressure Po will increase to another preset push-up pressure value Po2. And in the second stagnation period ts (t3~t4), the preset fluid pressure value Pa2 and the preset push pressure value Po2 are controlled to maintain a fixed value, and the pressure is continuously applied to the metal plate 65. And so on, until the metal molding 67 is formed.

In other words, the fluid pressure Pa and the push-up pressure Po are respectively applied to the metal plate 65 and the mold 21 in a piecewise incremental mode, and the segment incremental mode includes one or a plurality of change periods tc and one Or a plurality of stagnant periods ts, and the fluid pressure value (Pa) and the push-up pressure value (Po) will continue to increase during the change period tc, and during the stagnant period The fluid pressure value (Pa) and the push-up pressure value (Po) are maintained in the segment ts.

In an embodiment of the present invention, the preset push-up pressure values (Po1, Po2, Po3, Po4) at the same time point are greater than the preset fluid pressure values (Pa1, Pa2, Pa3, Pa4). Preferably, the push-up pressure Po is greater than the fluid pressure Pa, and the amount is greater than about 10% to 40% of the fluid pressure, especially more than 18% to 27%.

Further, in an embodiment of the present creation, the control unit 50 continues to heat the control heater 23 during the molding period in which the metal sheet 65 is press-formed into the metal molding 67, and causes the metal sheet 65 to be maintained at a certain level. Performed under constant temperature conditions.

Of course, in various embodiments, the control unit 50 will continue to heat the controllable heater 23 and may also relatively increase the operation of the heater 23 and the metal sheet 65 as the push-up pressure Po and/or the fluid pressure Pa increases. temperature.

Finally, please refer to FIG. 8 , which is a flow chart of molding of another embodiment of the present metal sheet during molding. As shown in the figure, please also refer to Figure 3, this creation includes:

In step S801, the control unit 50 controls and activates the heater 23 to heat the sealing mold 211 to a preset working temperature T1, and the control unit 50 also controls and activates the outer mold heater 25 to preheat the waiting mold 2155 to one. The outside temperature of the mold is T2.

Step S802, while waiting for the molding die 2155 to be moved into the mold forming area 200, a metal sheet 65 existing at room temperature is moved by a feeding unit 60 and placed on the top side end of the waiting molding die 2155, and Together with The mold to be molded 2155 is moved to the upper end of the elevator 31 and the mold forming area 200 by the transfer unit 61, and waits for the molding die 2155 to become a working mold 2151.

In step S803, the control unit 50 will control and activate the lifting unit 30, and the elevator 31 will move the working forming die 2151 toward the sealing die 211 to complete the clamping process of the die 21. At this time, the metal plate 65 will be interposed between the sealing mold 211 and the working mold 2151, and the heating effect of the heater 23 is indirectly obtained via the sealing mold 211 and the working mold 2151.

The fluid supply unit 40 starts to supply a high pressure fluid 49 to the sealed chamber 212 via the gas delivery pipe 43 and the gas delivery hole 213 when the mold 21 is clamped or the lifter 31 is activated, and generates a fluid in the sealed cavity 212 and on the surface of the metal plate 65. Pressure Pa. The lifting unit 30 also drives the working forming mold 2151 to continuously raise, and generates a pushing pressure Po to the mold 21, and the pushing pressure Po will be greater than the fluid pressure Pa (Po>Pa), thereby avoiding the mold 21 due to fluid pressure. Pa causes the drawback of gas leakage.

In step S804, the push-up pressure Po generated by the elevator 31 and the fluid pressure Pa generated by the high-pressure fluid 49 are individually performed in a piecewise incremental mode, and the fluid pressure Pa also causes the sheet 65 which has been heated and softened to be pressed against the molding. In the mold 215, it is formed into a metal molded piece 67.

Step S805, the metal molding 67 has been press-formed, and the control unit 50 drives the elevator 31 of the controllable lifting unit 30 to move the working mold 2151 and the metal molding 67 downward to move away from the sealing mold 11, that is, a mold opening. program.

Step S806, after the mold is opened, the moving unit 61 is from the mold forming area 200. The working forming die 2151 is taken out, and the working forming die 2151 and the metal forming member 67 still present therein are moved together and placed in a cooling bath 70 to cool down. The molding die 215 is directly cooled by contact with the cooling bath 70, and the metal molding 67 is indirectly cooled by the molding die 215.

In step S807, when the working molding die 2151 and the metal molding 67 are lowered to a preset temperature value, the metal molding 67 is removed from the working molding die 2151, and the molding step of the metal molding 67 is completed.

When the working mold 2151 and the metal molded piece 67 are moved to the cooling bath 70, the control unit 50 controls the next step S802. The feeding unit 60 will move another sheet metal 65 present at a room temperature to the upper end of the other waiting molding die 2155 which has been preheated to the mold in the outer heating zone 24 of the mold. The outer temperature T2 is passed, and the waiting mold 2155 and its metal plate 65 are moved to the upper end of the elevator 31.

In step S828, the present metal forming member 67 can also perform a general metal post-processing process or a secondary process for surface stress, coloring, low-temperature tempering, surface treatment, anodizing, and the like.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, that is, the shape, structure, characteristics and spirit described in the scope of the patent application are equally changed. Modifications shall be included in the scope of the patent application of this creation.

<p>10Metal sheet forming system</p><p>11Mold</p><p>111 Sealing Die</p><p>112 sealed cavity</p><p>115forming mould</p><p>116Forming cavity</p><p>13Electric heat pipe</p><p>15Metal sheet</p><p>155Metal molded parts</p><p>171High pressure gas generator</p><p>173 gas pipe</p><p>175 Vents</p><p>179High pressure gas</p><p>19Workbench</p><p>20Metal sheet forming system</p><p>200Mold forming area</p><p>21Mold</p><p>211 Sealing Die</p><p>212 sealed cavity</p><p>213 Vents</p><p>2135 Vents</p><p>215Molding die</p><p>2151Working mold</p><p>2155 Waiting for molding</p><p>216 molding cavity</p><p>217pattern layer</p><p>219 rail slot</p><p>23heater</p><p>231High Frequency Heater</p><p>235Electric heat pipe</p><p>24External heating zone</p><p>25External mold heater</p><p>251High Frequency Heater</p><p>255Electric heat pipe</p><p>27Nuclear</p><p>30 Lifting unit</p><p>31 Lifts</p><p>315 bearing seat</p><p>316rail</p><p>317Insulation</p><p>318 Waterway</p><p>35 Lifting server</p><p>397Preset push pressure value</p><p>40Fluid supply unit</p><p>41 Fluid Generator</p><p>43 gas pipeline</p><p>437Preset fluid pressure values</p><p>45 Fluid Server</p><p>49High pressure fluid</p><p>50Control unit</p><p>60Feeding unit</p><p>61Transfer unit</p><p>65Metal sheet</p><p>67Metal molded parts</p><p>70Cooling trough</p><p>73Condensation tube</p><p>73ACondenser tube location point</p><p>73BCondenser tube location point</p><p>73CCondenser tube location point</p><p>73ZCondenser tube location point</p><p>735ACondenser tube location point</p><p>735ZCondenser tube location point</p><p>75Liquid</p><p>PoPushing pressure</p><p>Pa fluid pressure</p><p>T1Preset working temperature</p><p>T2 outside mold temperature</p><p>T3 sheet temperature</p><p>W1 condensate</p><p>W2 cold water</p>

Figure 1: Schematic diagram of the construction of a conventional sheet metal forming system.

Figure 2: Schematic diagram of an embodiment of the present metal sheet forming system .

Fig. 3 is a schematic view showing the construction of a further embodiment of the present metal sheet forming system.

Fig. 4 is a schematic view showing the construction of a further embodiment of the present sheet metal forming system.

Fig. 5 is a schematic view showing the structure of a cooling groove of the present metal sheet forming apparatus.

Fig. 6 is a flow chart showing the molding of an embodiment of the present metal sheet during molding.

Figure 7: Preset pressure value-time distribution map of the creation in the metal forming process.

Fig. 8 is a flow chart showing the molding of another embodiment of the present metal sheet during molding.