JPS62169425A - Guide jig - Google Patents

Abstract

PURPOSE:To provide a guide jig whose size for receiving components can be changed easily and quickly for accommodating itself to varieties of components, by providing a pair of guide plates opposed to each other and cams held between the guide plates and capable of changing the distance between the guide plates. CONSTITUTION:A handle 12 is manually rotated properly so as to rotate a cam 14 interlocked therewith. Rotation of the cam 14 is transmitted synchronously to another cam 24 through a shaft 18 and a belt 27. By the synchronous rotation of the cams 14 and 24, guide plates 4a and 4b are moved smoothly while they are kept parallel with each other and the distance between the guide plates 4a and 4b is changed to a distance according to the width W of the lack. Adjustment in the lengthwise direction L is performed by selectively changing grooves 8a and 8b for guiding guide pins 7a and 7b on a partition plate 6.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to guide jigs, particularly guide jigs such as lead frames used in loaders and unloader mechanisms of assembly equipment such as wire bonding equipment. Concerning effective techniques.

[Prior art] An example of a lead frame technology described is "IC Mounting Technology" published by Industrial Research Association Co., Ltd., January 15, 1980 (Japan Microelectronics Association W).
, P137 to P140.

It is known that guide jigs are attached to both ends of a frame feeder on the loader/unloader side of a wire bonding device or the like in order to supply or collect lead frames.

[Problems to be Solved by the Invention] By the way, the above-mentioned guide jig is integrated with the frame feeder mechanism, and the housing dimensions of the guide jig are fixed, and only the lead frame that meets the product specification can be used. Can not do it.

Therefore, when performing wire bonding or the like using lead frames of different standard dimensions, the guide jig must be removed together with the integrated frame feeder and replaced with one of the corresponding type.

As described above, the present inventor has discovered that with the above-mentioned guide jig structure, guide jigs and feeders that correspond to the standard dimensions of all types must be prepared in advance, and that it is not easy to replace them. be.

Regarding this point, it may be possible to adjust the width of the rack guide with a screw to make the storage size variable to accommodate a wide variety of products, but this would require tightening or loosening the screws by a predetermined amount for each product. The inventor further revealed that it is troublesome to adjust the rack width in accordance with the width of the product type, and as a result, it is difficult to change the product type and improve manufacturing efficiency.

An object of the present invention is to provide a guide jig that allows accommodation dimensions to be changed easily and quickly in response to a wide variety of products.

The above and other objects and novel features of the present invention will become apparent from the description of this specification and the accompanying drawings.

[Means for Solving the Problems] A brief summary of typical inventions disclosed in this application is as follows.

That is, the guide jig has a structure including a pair of opposing guide plates and a cam that is held between the guide plates and can change the interval between the guide plates.

[Function] According to the above-described means, the storage dimensions can be changed only by rotating the cam, and it is possible to easily and quickly respond to changes in the types of storage products.

[Example] FIG. 1 is an explanatory diagram showing a guide jig that is an example of the present invention.

The guide jig 1 of this embodiment is for holding a ridge 3 in which a lead frame 2 is housed, and can be used, for example, in a loader or unloader of an assembly device such as a wire bonding device or a berent bonding device. It is possible.

The guide jig 1 includes a pair of guide plates 4a that are erected to face each other.
and 4b, and the portion surrounded by both guide plates 4a and 4b substantially forms a rank 3 accommodation space 5.

The rank 3 accommodated in the accommodation space 5 has a casing structure with openings at both ends in the length direction, and the openings 3
It has a structure in which a plurality of lead frames 2 can be stored in a drawer shape from a.

On the other hand, a partition plate 6 is installed upright in the rank accommodation space 5 of the guide jig l, and the partition plate 6 is connected to a guide pin attached to the partition plate 6. a, 7b are fixed by engaging with guides 118a, 8b formed on one side of the nokite plate 4b. The guides asa and sb have a plurality of grooves 8a and 8b that communicate with each other at the upper ends of the grooves and are formed at predetermined intervals.
By selecting the guide grooves 8a, 8b and engaging the guide pins 7a, 7b, the position of the partition plate 6 in the rank accommodation space 5 can be changed.

On the other hand, both guide plates 4a and 4b are connected to each other by two cross-shaped rods 9a and 9b at intermediate positions on their sides, and both rods 9a and 9b are pivoted at one end and the center. , the other end has an oval guide hole 10a.
The guide pin Ila is engaged with the eye so that the eye can be moved. Therefore, both temporary guides 4a, 4b are movable in the direction in which the guide plates 4a, 4b are opposed to each other or in the opposite direction. In addition, both guides 4Ii4 a
.

A spring 15 is attached to the side of the guide plate 4b, so that the guide plates 4a, 4b are biased toward the guide plates 4b, 4a facing each other.

A handle 12 is attached below the spring 15, and a pulley 13 and a cam 14, which are rotated coaxially and synchronously, are connected to the handle 12. cam 1
Four portions 14a are bored at predetermined intervals on the cam surface of No. 4, each of which is displaced by a distance from the center of the cam, and the recessed portions 14a
The pins 16 attached to the guide plates 4a and 4b are brought into contact with the guide plates 4a and 4b. In other words, this pin 16 and cam 14
The structure is such that the distance between the temporary guides 4a and 4b can be changed depending on the position of contact with the recess 14a.

On the other hand, the belt 1 is attached to the pulley 13 connected to the cam I4.
7) is suspended. The other side of the belt 17 is suspended from a shaft 18 extending parallel to the length direction of the guide jig 1, and a predetermined amount of rotation of the handle 12 is transmitted to the shaft 18 via the pulley 13 and the belt 17. It is structured to be transmitted.

Further, a guide plate 4a to which the handle 12 is attached;
A cam 24 and a pulley 23 having a structure symmetrical to the cam 14 and pulley 13 described above are rotatably attached to the side opposite to 4b, and a heald 27 is suspended from the pulley 23 in the same manner as above. The other side of the belt 27 is suspended from the shaft 18.

Here, the cam 24 is structured to rotate in synchronization with the aforementioned cam 14 via a belt 27, shaft 18, and belt 17, and the synchronous rotation of these two cams 14 and 24 causes the guide plate 4a to rotate.

4b can be smoothly changed.

Next, an example of the operation when changing the product type using the guide jig l of this embodiment will be explained.

First, depending on the type of lead frame 2, the length and dimension in the width W direction of the rack 3 that houses the lead frame 2 differ, but first, the storage dimension in the width direction is changed using the handle 12. That is, the handle 12 is manually rotated as appropriate to rotate the cam 14 that is connected thereto. Since this rotation of the cam 14 is synchronously transmitted to the other cam 24 via the heald 17, shaft 18 and belt 27, the guide plates 4a and 4b are in a parallel state due to the synchronization opening ε of both cams 14 and 24. move smoothly while maintaining both guide plates 4a.
, 4b is displaced to become an interval corresponding to the rack width W. At this time, since the recess 14a is formed in advance on the cam surface of the cam 14 in accordance with the standard width, adjustment in the width W direction can be performed more easily.

Next, adjust the length direction using the guide pin lla of the partitioning machine 6.
, llb's guides aaa, sb are selected and changed. That is, by selecting predetermined guide grooves 8a and 8b formed at predetermined intervals, the rack 3
It is possible to obtain partition positions corresponding to the length of the .

In this way, by changing L and W of the storage space 5, it is possible to obtain the storage space 5 that corresponds to the standard of the rack 3, which is the object to be stored.

Moreover, according to this embodiment, only a slight operation of the handle 12 and the guide pin? Since this can be done by simply replacing the racks a and 7b, it is possible to respond extremely easily and quickly to changes in the stored product types.

In the above description, the invention made by the present inventor is mainly applied to a guide jig for accommodating a lead frame rack used in the manufacturing of semiconductor devices, which is the field of application of the invention, but the invention is limited to this. It is an effective technique that can be applied to any guide jig that accommodates a thin plate-like member.

As described above, according to this embodiment, the following effects can be obtained.

(I) By using a guide jig structure that has a pair of opposing guide plates and a cam that is held between the guide plates and can change the interval between the guide plates, the housing dimensions can be changed only by rotating the cam. This makes it possible to respond to changes in product types extremely easily and quickly.

(2) According to the above (11), it is possible to quickly exchange products, so the manufacturing efficiency of small-lot, high-mix products can be greatly improved.

(3) According to +11 above, one guide jig can be used for a wide variety of products, so guide jigs of various standards are not required, and the cost of assembly equipment etc. can be reduced.

Although the invention made by the present inventor has been specifically explained above based on Examples, it goes without saying that the present invention is not limited to the Examples and can be modified in various ways without departing from the gist thereof. Nor.

[Effects of the Invention 1 The effects obtained by typical inventions disclosed in this application are briefly explained below.

By adopting a guide jig structure that has a pair of opposing guide plates and a cam that is held between the guide plates and can change the interval between the guide plates, it is possible to change the housing dimensions only by rotating the cam, and the product type It is possible to respond to changes extremely easily and quickly.

In addition, since it becomes possible to quickly exchange products, it is possible to greatly improve the efficiency of manufacturing a wide variety of products in small quantities.

Furthermore, since one guide jig can be used for a wide variety of products, guide jigs of various standards are not required, and the cost of assembly equipment and the like can be reduced.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing a guide jig which is an embodiment of the present invention. 1... Guide jig, 2... Lead frame, 3...
・U/R, 3a... Opening, 4a, 4b... Guide plate, 5... Rank accommodation space, 6... Partition machine, 7a,
7b...Guide bin, 3a. 8b...Guide groove, 9a, 9b---rod, 10a
, ], Ob --- Guide hole, tta, Ilb...
・Guide bin, 12...Handle, 13...Pulley, 14...Cam, 15...Spring, 16...Pin, 17...Belt, 18...Shaft, 23...
Pulley, 24...cam, 27...belt.

Claims (1)

[Scope of Claims] 1. A guide jig for holding a plate member housed in a rack, which includes a pair of opposing guide plates, and a cam that is held between the guide plates and can change the interval between the guide plates. A guide jig characterized by having. 2. The guide jig according to claim 1, wherein the cam is connected to a coaxial manual handle. 3. The guide jig according to claim 1, wherein the plate-like member is a lead frame for manufacturing a semiconductor device.