Parts supplying equipment

[Detailed Description of the Invention]

[0001]

[Industrial Application]

The present invention relates to the part feeder used for supplying one part, such as a substrate or a leadframe, at a time to Die bonder or wire Bonder mainly used for the second half process of semiconductor manufacture.

[0002]

[Description of the Prior Art]

The conventional part feeder used for this use has composition as shown in "Drawing 4" showing "Drawing 3" showing the front view, and its top view. That is, parts 1, such as a substrate or a leadframe, are stored by the lamination state in magazine 2, This magazine 2 is installed on support plate 4 of up-and-down motion drive unit 3, and when this up-and-down motion drive unit 3 upper-Motion at constant pitch, part 1 of the topmost part in magazine 2 is transported to the conveyance height position to transportation rail 5 one by one. To magazine 2, in transportation rail 5, the side opposite to sets, extrusion plate 8 is connected with the piston of cylinder 7 fixed on pedestal 6, and this extrusion plate 8 is held at a level with the height position which counters, topmost part 1 5, i.e., transportation rail, in magazine 2.

[0003]

Therefore, extrusion plate 8 pushes out part 1 of the topmost part in magazine 2 by the drive of cylinder 7, and it supplies on transportation rail 5, When extrusion plate 8 retreats to the original illustration position, up-and-down motion drive unit 3 drives, and magazine 2 is upper-Motion(ed) only constant pitch, Part 1 of the next topmost part in magazine 2 counters extrusion plate 8 and transportation rail 5, respectively, henceforth, the same operation as the above-mentioned is repeated, and one part is supplied at a time.

[0004]

[Problem(s) to be Solved by the Invention]

however -- since it must adjust by changing the position of the stopper of cylinder 7 in an above-mentioned part feeder when you want to change the amount of sending of part 1, or when you need the supplying position accuracy of part 1 There is a problem which needs the adjustment work by complicated and difficult manual operation each time. When the width of the sending direction of magazine 2 becomes large and the amount of sending of part 1 becomes large, the whole device is enlarged and there is a fault which requires a big installing space.

[0005]

Then, the present invention makes it a technical subject to provide the part feeder which sends in while being able to change the amount of sending of parts easily, and can miniaturize the whole device irrespective of the size of quantity.

[0006]

[Means for Solving the Problem]

The present invention considered a part feeder as the following composition as technical means for attaining the above-mentioned subject. That is, in a part feeder which pushes out and supplies at a time one part stored by lamination state, such as a leadframe and a substrate, to a magazine, A drive motor which consists of a pulse motor or a servo motor, and an inner side rotation reel board which rotates with this drive motor, A flexible beltlike extrusion plate which an end adheres to this inner side rotation reel board, and was almost wound around a peripheral surface within a single volume, An outside fixed guide board guided so that the extrusion plate may always be joined to the inner side rotation reel board according to a guide surface which is opposite with a constant interval over a peripheral surface of the inner side rotation reel board, It constitutes as a feature having provided guide structure which regulates the move direction of the extrusion plate so that the other end of the extrusion plate may press parts.

[0007]

[Function]

If an inner side rotation reel board rotates with a drive motor, the flexible beltlike extrusion plate which adheres to an inner side rotation reel board, and is joined by the peripheral surface of the inner side rotation reel board with the outside fixed guide board an end, It is pushed out in the direction of a magazine, this extrusion plate moves in the direction regulated by guide structure, and it sends out parts certainly out of a magazine. After supply of parts is completed, while an inner side rotation reel board rotates to an opposite direction with the above-mentioned with a drive motor and an extrusion plate retreats from a magazine, it is guided with an outside fixed guide board, and is rolled round by inner side rotation reel board 13.

[0008]

Since an extrusion plate is twisted around the peripheral surface of an inner side rotation reel board with an outside fixed guide board at a junction state and is sent out with rotation of an inner side rotation reel board at the time of rotation of an inner side rotation reel board, A setup of the degree of rotation angle by the number of output pulses of the drive motor which the degree of rotation angle of an inner side rotation reel board, i.e., a drive motor, and the amount of sending into the magazine of an extrusion plate have in proportionality relation, and consists of a pulse motor or a servo motor, The amount of sending to the magazine of an extrusion plate can be changed very easily and correctly. Since it is the composition which rolls round the extrusion plate retreated from the magazine to an inner side rotation reel board, the outside of a device is not enlarged, even if the width of the sending direction of a magazine becomes large and the amount of sending of parts becomes large.

[0009]

[Example]

Hereinafter, while referring to drawings for one desirable example of the present invention, it explains in full detail. "Drawing 1" shows the front view of one example of the present invention, "Drawing 2" shows the top view of that, respectively, the same numerals are given to a thing the same as that of "Drawing 3" and "Drawing 4", or equivalent in these figures, and the explanation is omitted. And drive motor 11 which can set the degree of rotation angle to the rear surface of tie-down plate 10 held by supporting leg 9 at the perpendicular state with the number of output pulses which consists of a pulse motor or a servo motor is being fixed in the state where the tie-down plate 10 was made to penetrate motor shaft 12 of the very thing. To this motor shaft 12, inner side rotation reel board 13 adheres to the front side of tie-down plate 10 concentrically, and this inner side rotation reel board 13 rotates by motor shaft 12 at one. While the end part of flexible beltlike extrusion plate 14 is being fixed to the crevice formed in a part of this inner side rotation reel board 13 with the screw, this extrusion plate 14 is almost wound around the peripheral surface of inner side rotation reel board 13.

[0010]

Outside fixed guide board 15 which is notch There was C type-like and was formed in the outside of the above-mentioned inner side rotation reel board 13 to the path of inner side rotation reel board 13 at the slightly bigger inside diameter than the thickness of extrusion plate 14 a ring shape part, It allots concentrically to inner side rotation reel board 13, and is being fixed to tie-down plate 10. This guides so that outside fixed guide board 15 may twist extrusion plate 14 to rotation of inner side rotation reel board 13 that there is no crevice in inner side rotation reel board 13.

[0011]

Since it sends out linearly so that the tip pressing part of extrusion plate 14 may be turned to magazine 2 and part 1 can be pushed out as guide structure of extrusion plate 14, While linear guide block 18 and linear guide bearing 17 are opposite-Establishment(ed) by the pinching state in extrusion plate 14, By carrying out rotation energization of the one-way clutch lever 20 pivoted by outside fixed guide board 15 by pivot 19 enabling free rotation with spring 21, one-way clutch 22 which clung to the free end of the lever 19 is pushed against extrusion plate 14. This one-way clutch 22 will be in a clutch opened state, only when [ in / in inner side rotation reel board 13 / "Drawing 1" ] it rotates clockwise and extrusion plate 14 is sent out to a magazine 2-way. Photoelectric method starting point sensor 23 which detects optically the hole for positioning (not shown) which punched extrusion plate 14 to the extrusion mouth of extrusion plate 14 of the proximity position of linear guide block 18 is allocated.

[0012]

Next, the operation of the above-mentioned example is explained. When sending out part 1 in magazine 2 to transportation rail 5, drive motor 11 rotates only the predetermined angle beforehand set up with the number of output pulses, Inner side rotation reel board 13 rotates to the clockwise rotation in "Drawing 1" at motor shaft 12 of this, and one, In connection with it, extrusion plate 14 which pushes against the peripheral surface of inner side rotation reel board 13 with outside fixed guide board 15 and one-way clutch 22, and is rolled almost is pushed out by the magazine 2-way. At this time, one-way clutch 22 is a clutch opened state, and it rotates by Light load and sends out extrusion plate 14, Since the move direction is regulated so that extrusion plate 14 may move linearly horizontally by linear guide block 18 and linear guide bearing 17, part 1 is certainly pushed out by transportation rail 5.

[0013]

After supply to transportation rail 5 of part 1 is completed, drive motor 11 rotates to an opposite direction with the above-mentioned, and inner side rotation reel board 13 rotates to the counterclockwise rotation in "Drawing 1", and it is rolled round by inner side rotation reel board 13 while extrusion plate 14 retreats from magazine 2. Since extrusion plate 14 is pushed against inner side rotation reel board 13 in the state where one-way clutch 22 is a clutch closed state, and does not rotate at this time, While extrusion plate 14 Sliding contacts to one-way clutch 22, it is pushed against inner side rotation reel board 13 without a crevice, and it shows around just behind that at outside fixed guide board 15, and is almost wound around inner side rotation reel board 13. Therefore, the degree of rotation angle of inner side rotation reel board 13 11, i.e., a drive motor, and the amount of sending to magazine 2 of extrusion plate 14 are in proportionality relation, and it can change the amount of sending to magazine 2 of extrusion plate 14 by setup of the degree of rotation angle by the number of output pulses of drive motor 11. At the time of rolling up of extrusion plate 14, when photoelectric method starting point sensor 23 detects the hole for positioning of extrusion plate 14 optically, drive motor 11 stops.

[0014]

The present invention is not limited only to the above-mentioned example, and unless it deviates from the range of a claim, it may also include various modifications. For example, although it pushed out one thing of the topmost part of each part article of a lamination state at a time in the magazine, it may be made to push out one lowermost thing at a time in the above-mentioned example.

[0015]

[Effect of the Invention]

Since it constituted according to the part feeder of the present invention as mentioned above so that the degree of rotation angle of an inner side rotation reel board, i.e., a drive motor, and the amount of sending to the magazine of an extrusion plate might become proportionality relation, The amount of sending to the magazine of an extrusion plate can be changed very easily and correctly by setup of the degree of rotation angle by the number of output pulses of a drive motor. It is since it had composition which twists this extrusion plate around an inner side rotation reel board using a beltlike extrusion plate flexible as an object for part extrusion, Even if the width of the sending direction of a magazine becomes large and the amount of sending of parts becomes large, the outside of a device is not enlarged, and a big installing space is not needed.

[Brief Description of the Drawings]

[Drawing 1]

It is a front view of one example of the present invention.

[Drawing 2]

They are the same as the above and a top view.

[Drawing 3]

It is formerly a front view of a device.

[Drawing 4]

They are the same as the above and a top view.

[Description of Notations]

1 Parts 2 Magazine 11 Drive Motor 13 Inner Side Rotation Reel Board 14 Extrusion Plate 15 Outside Fixed Guide Board