JPH0129788Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a device for positioning a workpiece in the left-right direction, front-back direction, and rotational direction, and is suitable for, for example, bonding work, inspection work, etc. of optical semiconductor elements and ICs.
Alternatively, the present invention relates to a positioning device that can be used for assembling parts and assembling work.

[Background technology and its problems]

BACKGROUND OF THE INVENTION Positioning devices are required to perform various precision operations, and in recent years there has been a growing demand for improved product quality, so the importance of positioning devices has spread to various industrial fields. In particular, with the current widespread use of electronic products in general society and the diversification of products, positioning devices are increasingly required in manufacturing, inspection processes, etc. in the electronics field.

For example, in bonding work in the manufacturing process of optical semiconductor devices and ICs, in order to perform the work accurately and automatically, the workpiece is
Respective positioning in the rotational direction is required. In order to perform this positioning,
It is conceivable to manufacture a device equipped with a positioning mechanism in each of the forward and backward directions and the rotational direction, but this would increase the size of the entire device.
Furthermore, a large number of parts are required, which complicates the structure and increases manufacturing costs.

In addition, electrical elements such as optical semiconductors are minute objects,
In order to accurately position minute objects, it is generally necessary to use sophisticated equipment and maintain high accuracy in processing and assembling parts. It takes time and effort, and the production cost increases.

[Purpose of invention]

The purpose of this invention is to be able to simultaneously position a workpiece in the left-right direction, front-back direction, and rotational direction using a simple structure with a small number of parts. It is an object of the present invention to provide a positioning device that can be accurately manufactured even when the positioning device is placed, has simple parts manufacturing and assembly operations, and can be manufactured easily at low manufacturing cost.

[Means and actions for solving problems]

In order to achieve this purpose, the present invention forms two V-shaped notches cut inward at opposite positions of the workpiece, and arranges two clamping members on both sides of the workpiece. These clamping members are provided with V-shaped protrusions that fit into the V-shaped notches, allowing the two clamping members to move forward and backward relative to the workpiece.

Workpieces are fed between two clamping members, and even if the supply position shifts from one workpiece to another, the clamping members move forward and the V-shaped protrusion fits into the V-shaped notch, so that the position of the workpiece is adjusted. It is automatically corrected and positioned in place.

By making both of the two clamping members move forward and backward with respect to the workpiece, a large workpiece supply space can be secured between both clamping members when supplying the workpiece, making it possible to easily and reliably carry out the workpiece supply operation. Become.

In this way, when both clamping members are made to move forward and backward with respect to the workpiece, one clamping member is urged toward the workpiece by a larger biasing force than the other clamping member, and The forward movement limit position of the clamping member is restricted. According to this, when the clamping member with a large biasing force reaches the forward limit position, the clamping member becomes immobile, and the clamping member with a small biasing force cannot be advanced beyond a certain position by the clamping member with a large biasing force. Therefore, none of the clamping members moves in the forward/backward direction, and the workpiece is positioned.

Making the clamping member move forward and backward with respect to the workpiece is achieved by making the clamping member swingable about a fulcrum shaft or linearly reciprocated.

〔Example〕

FIG. 1 is a plan view showing a first embodiment of a positioning device according to the present invention, and FIG. 2 is a perspective view of a workpiece to be positioned.

The workpiece in the embodiment described below is a base member 1 of an optical semiconductor element, and is used as a base member for bonding a chip 2, which is an IC, to the base member 1, or for wire bonding work for bonding the chip 2 and lead wires 3. The member 1 is positioned. A V-shaped notch 4 cut inward is formed on the outer peripheral surface of the disc-shaped base member 1, and this V-shaped notch 4 is located at a position 180 degrees apart in the circumferential direction, that is, at a position facing each other. Two pieces are provided.

As shown in FIG. 1, a table 11 on which the base member 1 is placed is fixed to the base 10 of the positioning device, and as shown in FIG. 3, a hole 11A for inserting the lead wire 3 is formed in the center of the table 11. It is hollow. As shown in FIG. 1, two arm-shaped clamping members 12 and 13 are arranged on the left and right sides of the table 11, and these clamping members 12 and 13 are swingable around a fulcrum shaft 14, and are By moving, it can move forward and backward relative to the base member 1. V-shaped protrusions 15 facing each other are provided at the tips of each of the clamping members 12 and 13, and these V-shaped protrusions 15 have a V-shaped angle corresponding to the V-shaped notch 4. It can be fitted into the V-shaped notch 4.

Springs 16 and 17 are connected to the rear ends of each of the clamping members 12 and 13, and the tensile force of the springs 16 and 17 is always acting on the clamping members 12 and 13, so that the clamping members 12 and 13 The V-shaped protrusions 15 are urged toward the base member 1 so as to approach each other. Since the spring force of the spring 16 of the springs 16 and 17 is large, the biasing force applied to the clamping member 12 is larger than the biasing force of the clamping member 13. The clamping member 12 to which a large biasing force has been applied in this way contacts the stopper member 18 provided on the base 10, thereby moving the base member 1 around the fulcrum shaft 14.
The limit position for swinging to the side, that is, the forward limit position is restricted, and no further forward movement is possible.

A relief means 19 such as an air cylinder, a solenoid, or a cam is disposed on the side of each clamping member 12 and 13, and when the operating rod 19A is protruded and the relief means 19 is activated, each clamping member 12 , 13 are opened and swung about the fulcrum shaft 14 as shown by the chain double-dashed line in FIG.

Next, the effect will be explained.

First, the release means 19 is activated to remove the clamping member 1.
12 and 13 are opened and swung, then the table 11
A feeding device (not shown) is attached to the top surface of the base member 1.
Put on. At this time, since a large space for supplying the base member 1 is secured on the top surface of the table 11 by opening and swinging the clamping members 12 and 13, the base member 1 is supplied to the top surface of the table 11.
can be easily and reliably set.

Thereafter, the release means 19 is deactivated, and the clamping members 12 and 13 are closed and swung by the tension of the springs 16 and 17. As a result, each clamping member 1
2 and 13 move forward, but the clamping members 12 to which a large biasing force has been applied are restricted from their forward movement limit positions by contact with the stopper member 18, and each clamping member 1
After the V-shaped protrusions 15 of 2 and 13 are fitted into the V-shaped notch 4 of the base member 1, the clamping member 1 has a small biasing force.
3 is prevented from advancing by the biasing force of the clamping member 12, and the V-shaped protrusion 15 fits into the V-shaped notch 4, so that the base member 1 is moved in the left-right direction due to the V-shaped effect.
It is positioned simultaneously in the front-rear direction (vertical direction in FIG. 1) and in the rotational direction.

Next, an operation for bonding the chip 2 to the base member 1 or a wire bonding operation for bonding the chip 2 and the lead wire 3 is performed by a bonding device (not shown). After completing this bonding work,
The clamping members 12 and 13 are opened and swung again by the operation of the relief means 19, and the base member 1 is taken out from the top surface of the table 11 by a take-out device (not shown).After this, a new base member 1 is again taken out by the supply device. It is placed on the top surface of the table 11, and the above-described operations are repeated thereafter.

FIG. 4 shows a positioning device according to a second embodiment. In this embodiment, the clamping members 22 and 23 having V-shaped protrusions 25 at their tips are capable of linear reciprocating movement along guide members 20A and 20B provided on the base 20, and the clamping members 22 and 23 are movable in a straight line while maintaining a parallel state. 22,2
3 moves forward and backward with respect to the base member 1. In this embodiment as well, the spring force of the spring 26 is set larger than that of the spring 27, so that a larger biasing force is applied to the clamping member 22 than that of the clamping member 23, and the forward movement limit of the clamping member 22 is limited. The position is regulated by a stopper member 28. Further, as in the first embodiment, a release means 29 for releasing the clamping members 22 and 23 from the base member 1 is provided.

In each of the embodiments described above, the workpiece to be positioned was the base member 1 of the optical semiconductor element, but the positioning device according to the present invention can also be used for positioning other workpieces, such as components of an IC.
Work is optional. Furthermore, the apparatus according to the present invention can be applied not only to bonding work for optical semiconductor elements and ICs, but also for positioning when performing inspection work for these electrical elements. It can also be applied to positioning not only electric elements but also arbitrary parts when performing precise assembly or assembly work.

[Effect of idea]

According to the present invention, the structure can be easily constructed with a small number of parts using two clamping members each having a V-shaped protrusion, and the V-shaped protrusion of the clamping member fits into a V-shaped notch in the workpiece. As a result, the workpiece can be positioned simultaneously in the left-right direction, front-back direction, and rotational direction, and even if the workpiece is a minute object such as an optical semiconductor or other electrical element, the workpiece can be positioned by the V-shaped effect of the V-shaped protrusion and V-shaped notch. It has the advantage that accurate positioning can be realized, there is no difficulty in manufacturing and assembling parts such as the clamping member, and it can be easily manufactured at a low manufacturing cost.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the device according to the first embodiment, and FIG.
The figure is a perspective view showing a base member of an optical semiconductor element as a workpiece, FIG. 3 is a cross-sectional view taken along the line -- in FIG. 1, and FIG. 4 is a plan view of the apparatus according to the second embodiment. 1... Base member of an optical semiconductor element which is a workpiece, 4... V-shaped notch, 12, 13, 22, 23...
...Pinching member, 15,25...V-shaped protrusion, 16,1
7, 26, 27...Spring, 18, 28...Stopper member, 19, 29...Release means.

Claims (1)

[Scope of utility model registration request] Two Vs cut inward at opposing positions
a workpiece in which a cutout is formed; two clamping members each having a V-shaped protrusion that fits into the cutout and disposed on both sides of the workpiece so as to be able to move forward and backward with respect to the workpiece; urging means provided on each of the clamping members to bias the clamping members in the direction of the workpiece and having different magnitudes of biasing force;
A stopper member that restricts the forward movement limit position of one of the clamping members to which a large biasing force is applied, and a relief means that is provided on each clamping member and retreats the clamping members from the workpiece. A positioning device characterized by: