Paper sheet supply device

Description: TECHNICAL FIELD [Detailed description of the invention]

【0001】

[Technical field to which the invention belongs]

The present invention relates to, for example, a paper supply device in which a plurality of sheets of paper laminated on a hopper are separated and supplied one by one by the suction force of a suction pad in an encapsulation and sealing device or the like.

【0002】

[Conventional technology]

In the encapsulation and sealing device, as shown in FIG. 5, the envelope and the contents to be inserted into the envelope are laminated on different hoppers H1, H2, H3, and one envelope and the contents are sequentially placed from each hopper H1, H2, H3. After taking out the objects, they are sent to the sealing portion I by the transport paths R1 and R2, and the contents such as a letter are inserted into the envelope. After that, the envelope into which the contents are inserted is sent to the sealing portion, where the flap of the envelope is subjected to moistening treatment, bending treatment, etc. to seal the envelope, and the envelope is laminated on the stacker K.

【0003】

In such an encapsulation and sealing operation, it is necessary to take out one content from each of the hoppers H1, H2, and H3, but usually, the contents in a laminated state are in close contact with each other. When the contents were taken out from the hoppers H1, H2, and H3, a plurality of contents were taken out in a state of being polymerized, and the same kind of contents were sometimes duplicated in the envelope.

【0004】

Therefore, in the conventional encapsulation and sealing device, for example, a paper supply device as shown in FIG. 6 is used for the content supply unit. This paper supply device is provided with a hollow box-shaped hopper H for laminating and holding a large number of papers, and a suction pad P connected to an air source (not shown) is formed on the bottom surface Hb of the hopper H. It is provided so that it can move forward and backward with respect to the outlet Hb1.

【0005】

Then, when the suction pad P moves to the discharge port Hb1 as shown by the alternate long and short dash line in the figure, the lowest-level paper Sd exposed from the discharge port Hb1 is sucked and held by the suction pad P. After that, when the suction pad P returns to the initial position (the position shown by the solid line in the figure), the paper Sd held here is joined to the outer peripheral surface of the discharge drive roller R1 and the discharge driven roller R2 is in the arrow a direction. Paper P is sandwiched between the discharge drive roller R1 and the discharge driven roller R2. As a result, the paper P is fed to the supply rollers R3 and R4 located downstream by the rotational force of the discharge drive roller R1, and is fed from here to the transport path R.

【0006】

As described above, in the paper supply device, only the lowest-ranked paper Sd from the paper S laminated on the hopper H is separated by the suction force of the suction pad P and supplied.

【0007】

[Problems to be Solved by the Invention]

However, in the above-mentioned conventional paper supply device, when the paper S to be supplied is breathable, for example, when the surface of the paper is not coated or printed on the entire surface. , The suction force from the suction pad P may extend not only to the lowest paper Sd but also to the paper located above it, in which case a sufficient paper separation effect cannot be obtained and multiple sheets of paper may be used. It will be taken out at the same time.

【0008】

Therefore, air is sprayed to the side of the laminated paper S to form a layer of air between the papers to release the close contact state between the papers, and the paper other than the paper having the lowest suction force of the suction pad. Proposals and implementations have also been made to prevent this from reaching. However, in the case of this device, a large-capacity vacuum pump or compressor is required to inject air to the side of the paper, which causes a significant cost increase and a large noise is generated by the air ejection. There's a problem.

【0009】

In addition, each suction pad is provided with an adjustment mechanism and an operation means, and the position of the suction pad is moved in the front-rear direction with respect to the front end of the paper by the adjustment mechanism and the operation means to adjust the suction force of the suction pad. However, it has also been proposed that only the lowest-level paper be taken out. However, in the case of this device, it is necessary to adjust the position of each suction pad, and it takes skill to adjust all the suction pads in the same manner with respect to the front edge of the paper, which significantly reduces the work efficiency. Not only that, there is a problem that a large cost increase is caused because each of them is provided with an adjusting mechanism and an operating means.

【0010】

The present invention has been made by paying attention to the above-mentioned problems of the prior art, and it is possible to reliably take out the paper one by one by the suction pad from the paper laminated in the hopper, and it is constructed at low cost. An object of the present invention is to provide a paper supply device capable of providing a paper feeder.

【0011】

[Means for solving problems]

In the present invention, a hopper having a front portion that stores paper in a stacked state and abuts on the front end portion of the paper for positioning is connected to a predetermined intake source, and is connected to a predetermined intake source and substantially parallel to the lower side of the hopper and the front end portion of the paper. It is provided with a suction pad that is arranged and provided so as to be able to advance and retreat with respect to the lowest paper stacked on the hopper, and the suction pad advances to suck the lowest paper stacked on the hopper and retracts the paper. In the paper supply device that is taken out from the hopper, the front surface portion of the hopper is configured so that the position can be adjusted in the front-rear direction.

【0012】

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 4. In FIGS. 1 and 2, reference numeral 1 denotes a hopper that holds a plurality of sheets S in a laminated state. The hopper 1 is formed in a hollow box shape by the front surface portion 1a, the bottom surface portion 1b, the left and right side surface portions 1c, 1c, and the back surface portion 1d, and the bottom surface portion 1b is inclined diagonally downward from the rear end portion to the front end portion. ing. Further, the front surface portion 1d of the hopper 1 is rotatably connected to the left and right side surface portions 1c and 1c by the connecting shaft 1a1 on both sides of the upper portion thereof, and the connecting shaft 1a1 is used as a fulcrum in the front-rear direction (X1, X2 direction). It is possible to swing to. A gap 1b1 is formed between the lower end portion of the front surface portion 1a and the bottom surface portion 1b, and this is the discharge port 1b1 for discharging the paper S.

【0013】

Reference numeral 2 denotes a crank rod whose both ends are rotatably supported by the left and right side surface portions 1c and 1c of the hopper 1. The crank rod 2 is rotatably inserted into the elongated holes h1 and h1 of the shaft insertion portions 1a3 and 1a3 projecting from the front portion 1a, and the front portion adjusting knob 3 is fixed to one end of the elongated holes h1 and h1. There is. The front surface adjustment mechanism is composed of the front surface adjustment knob 3 and the crank rod 2.

【0014】

Reference numeral 4 denotes a plurality of (here, 4) claw support plates whose upper end is rotatably supported by a support shaft 5 inserted through the shaft insertion portion 1a2 on the front surface. The claw support plate 4 is formed with a claw portion 4a protruding from the lower end of the front surface portion 1a, and the claw portion 4a locks the front end portion S1 of the paper S laminated in the hopper 1. ing. A crank rod 6 is inserted through the claw holding plate 4, and a claw adjustment knob 7 is fixed to the tip of the crank rod 6. Then, when the knob 7 is rotated, the claw holding plate 4 moves in the front-rear direction (X1, X2 direction) within a predetermined angle range around the support shaft 5, whereby the amount of protrusion of the claw member from the lower end of the front portion is increased. It is changing.

【0015】

On the other hand, reference numeral 8 denotes a rotating shaft rotatably supported by the support 9, and a plurality (8) connected to the rotating shaft 8 via an electromagnetic valve to a vacuum pump (air source) (not shown). Here, four suction pads 10) are fixed via the holding member 11. Further, the suction pads 10 are arranged in a row on the left and right along a straight line parallel to the front end portion of the bottom surface portion 1b by the holding member 11. Then, by rotating the rotating shaft 8 by a driving means (not shown), each suction pad 10 is moved from the initial position below the bottom surface portion 1b (the position shown by the solid line in FIG. 1) to the discharge port 1b1. It reciprocates to the adjacent advance position (the position indicated by the alternate long and short dash line in Fig. 1). The pad moving mechanism is composed of the rotating shaft 8 and the support 9.

【0016】

Reference numeral 12 denotes a pickup roller that is rotated around the shaft 13 by a motor (not shown), 14 is a rotary solenoid that reciprocates the shaft 15, and 16 is a roller arm fixed to the shaft 15. A pressure roller 17 is axially attached to the upper end of the roller arm 16, and the roller arm 16 rotates together with the shaft 15 in the direction of the arrow a so as to come into contact with the outer peripheral surface of the pickup roller 12. It has become.

【0017】

Reference rollers 18 and 19 are feed rollers that are rotated in a certain direction by a motor (not shown), and tension rollers 20 and 21 are tension rollers that are in pressure contact with the feed rollers 18 and 19, and are sent out from the pickup roller 12 along the paper guide 22. Paper is further fed to the paper supply stand 23. Reference numeral 24 denotes a stopper roller that temporarily stops the paper fed to the upper surface of the paper supply base 18 and feeds the paper onto the paper transport base 25 at a predetermined timing.

【0018】

Based on the above configuration, the operation will be described next. When stacking papers in the hopper 1, the front end of each paper is brought into contact with the front end 1a of the hopper 1. As a result, the position of the front end portion of the paper S is determined, and the position of the front end portion of the paper determined here is set according to the air permeability of the paper S. For example, when the paper S to be set is a paper having almost no air permeability, the opening 10a of the suction pad 10 moved to the advance position (indicated by the alternate long and short dash line in FIG. 1) is shown in FIG. 4 (Fig. 1). As shown in b), the position of the front edge S1 of the paper is set so that it is completely covered by the setting paper, and if the paper S is breathable, the opening 10a of the suction pad 10 The position of the front edge of the paper of the front edge of the hopper 1a is set so that a part of the paper protrudes outward from the front edge of the paper S1 as shown in FIG. 4 (a).

【0019】

Then, this position setting can be performed by rotating the front portion adjustment knob 3. That is, when the front adjustment knob 3 is rotated, the crank rod 2 performs an eccentric movement, and the position of the front portion 1a is within the range shown in T in FIG. 3 according to the amount of eccentric movement in the front-rear direction. Since it changes, the position of the front end portion S1 of the paper S that abuts on the front surface portion 1a is also adjusted accordingly. The paper S laminated on the hopper 1 is stable in contact with the front surface portion 1a because the bottom surface portion 1b of the hopper 1 is inclined downward from the rear end to the front end. Further, since the front end portion of the paper Sd located at the lowest position in the laminated paper S is supported by the claw portion 4a, the paper Sd does not accidentally fall off from the discharge port 1b1.

【0020】

Further, during the paper supply operation, the rotation shaft 8 first rotates, and the rotation operation causes the suction pad 10 to move from the initial position to the advance position (shown by the alternate long and short dash line in FIG. 1) together with the holding member 11. Here, in order to switch the solenoid valve (not shown) from the closed state to the open state and communicate the vacuum pump and the suction pad 10, a suction force is generated in the suction pad 10 to suck the paper S located at the lowest position.

【0021】

At this time, if the paper S to be sucked is breathable, the positional relationship between the intake pad 10 and the front end portion S1 of the paper is as shown in FIG. 4 (a), so that the suction pad 10 Suctions the paper S by its suction force and also sucks the outside air. Then, the external air sucked by the suction pad 10 flows between the upper paper Se and the lowermost paper Sd as shown by the arrows A1 and A2 in FIG. An air layer is formed. Therefore, the suction force of the suction pad 10 does not reach the upper paper Se, and only the lowermost paper Sd is sucked and held by the suction pad 10.

【0022】

If the paper S to be sucked is not breathable, the opening 10a of the suction pad 10 is completely covered by the paper S (see FIG. 4 (b)). The suction force of the pad 10 does not reach the paper Se above the lowest paper Sd, and only the lowest paper Sd is surely sucked and held by the suction pad 10.

【0023】

As described above, in this embodiment, since the lowermost paper Sd can be reliably separated and taken out using only the suction pad 10, air for paper separation is ejected from the side of the paper S as in the conventional case. It is not necessary to make the vacuum pump or compressor smaller, and the cost can be reduced. In addition, the noise level is significantly reduced because the air for separating the paper is not blown out.

【0024】

As described above, the suction pad 10 that has sucked one sheet of paper then returns to the initial position, and the sucked paper is joined to the outer peripheral surface of the pickup roller 12. Then, the rotary solenoid 14 operates, the shaft 15 is rotated together with the roller arm 16 in the direction of the arrow a, and the pressure roller 17 is swiveled toward the pickup roller 12. As a result, the paper sucked by the suction pad 10 is sandwiched between the pressure roller 17 and the pickup roller 12, and the feed rollers 18 and 19 and the pressure roller 20 are provided along the paper guide 22 by the rotational force of the pickup roller 12. The paper is fed between the paper feed rollers 18 and 21, and is further fed to the paper supply base 23 by the rotational force of the feed rollers 18 and 19, and then sent to the paper transport base 25 by the stopper roller 24 at a predetermined timing.

【0025】

By the way, in this embodiment, the relative position between the paper and the suction pad 10 is adjusted according to the air permeability of the paper S, but the adjustment moves the front surface portion 1a of the hopper 1 back and forth. Since it is performed by adjusting the position of the front edge of the paper, the relative position with respect to the paper can be adjusted at the same time without adjusting the position of each suction pad 10 individually, which is extremely quick and easy. You can perform the setting operation on.

【0026】

In the above embodiment, the front end adjustment mechanism is composed of the front end adjustment knob 3 and the crank rod 2, but the front end adjustment mechanism is not particularly limited to the above configuration, and other configurations may be adopted. It is possible. For example, the front portion adjusting mechanism can be configured by combining a pinion that rotates with the front portion adjusting knob 3 and a rack fixed to the front portion 1a. Further, the front end portion adjusting mechanism may not be provided, and the fixed position of the front plate 1 may be simply moved along the front-rear direction. In this case as well, the intended object of the present invention is achieved. Is possible.

【0027】

Further, a plurality of suction pads arranged in a row parallel to the front edge of the paper are connected by a connecting plate or the like. Each suction pad is attached to the holding member via a slide mechanism so as to be slidable in the front-rear direction with respect to the front end portion of the paper. The adjustment mechanism is composed of the connecting plate and the slide mechanism. The connecting plate and the holding member have screws in different rotation directions on the left and right, and an operating means for inserting a disk-shaped operating portion is screwed near the center. Then, by rotating this operating means, the suction pad is moved back and forth with respect to the front end portion of the paper to achieve the intended purpose of the present application. However, different than the one to move the front portion of the hopper which is in a semi-fixed state as described above will, for always moving the suction pad in the drive state, easily misaligned, also happening misalignment immediately , May not be found.

【0028】

[Effect of the invention]

As described above, the paper supply device according to the present invention is configured so that the fixed position of the front surface portion of the hopper can be moved in the front-rear direction, and the position of the front end portion of the paper bundle laminated in the hopper is set to a desired position. It has become possible. Therefore, when the paper is breathable, the position of the front part of the hopper is surely adjusted so that the opening of the suction pad protrudes partly outward from the front end of the paper. The lower paper can be separated from the paper that superimposes on it, and if the paper is not breathable, the opening of the suction pad is completely covered by the paper on the front of the hopper. By adjusting the position, only the lowest-level paper can be reliably sucked. Therefore, if the paper supply device according to the present invention is applied to the content supply unit of the sealing and sealing device, it is possible to reliably prevent the same type of contents from being duplicated and sealed in the envelope, and the reliability of the device is improved. Greatly improved. Further, in the paper supply device according to the present invention, the relative positions of each suction pad and the front end of the paper can be adjusted at once by adjusting the position of the front end of the hopper without adjusting the positions of the plurality of suction pads individually. And the setting operation can be performed extremely quickly and easily. In addition, since only the suction pad is used for paper separation, the size and cost of the air source can be significantly reduced compared to the conventional case of injecting air for paper separation. Since almost no air ejection noise or paper vibration temperature is generated, it is possible to realize operation with low noise.

[Simple explanation of drawings]

[Figure 1]

It is a side view which shows one Example of this invention.

[Figure 2]

It is an arrow view view of what is shown in FIG. 1 from the direction of arrow X.

[Fig. 3]

It is a side view which shows the front part adjustment state of the hopper shown in FIG.

[Fig. 4]

It is a figure which shows the state which sucked the paper by the suction pad 10 shown in FIG. 1, and (a) is the perspective view which shows the state which a part of the opening of the suction pad 10 protruded outward from the front edge of the paper, ( b) is a perspective view showing a state in which the opening of the suction pad 10 is completely covered with paper.

[Fig. 5]

It is a block diagram which shows the processing process in the conventional sealing and sealing apparatus.

[Fig. 6]

It is a side view which shows the conventional paper supply device.

[Explanation of symbols]

S paper Sd bottom paper 1 hopper 1a front 1b bottom 2 crank rod 3 Front adjustment knob 8 rotation shaft 9 Support 10 Adsorption pad 10