JPH0221444Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is applicable to IC bonding equipment, etc.
In an automatic magazine supply/exchange device that places a magazine containing a lead frame and replaces an empty magazine after taking out the lead frame after bonding work or a magazine with a lead frame taken in, the magazine is placed in a predetermined position during bonding work. This invention relates to a magazine fixing mechanism for fixing the magazine and automatically releasing the magazine after work.

[Conventional technology]

In IC bonding equipment, etc., a magazine is supplied, the lead frame stored in the magazine is pushed out to a bonding stage on a carrier by an extrusion mechanism, bonding work is performed there, and after the work is completed, the lead frame is stored in another magazine, Automatic magazine supply and exchange devices that discharge these magazines are widely known.

For example, as shown in FIG. 4, a magazine 20 containing a large number of lead frames inside is placed on an elevator 21 that descends from above the supply side along a guide bar 22' by rotation of a feed screw 22. It descends and reaches the side of the carrier 23. Thereafter, the elevator 21 intermittently descends one lead frame at a time, and a lead frame extrusion mechanism (not shown) sends out the stored lead frames one by one to the bonding station 24 on the carrier 23. Bonding is performed on the extruded lead frame by the bonding arm 25, and the completed lead frame is
On the opposite discharge side of the carrier 23, it is stored in an empty magazine 20 which is lowered by an elevator 21. When this magazine 20 becomes full, it is pushed out by the ejection mechanism 26, and on the other hand, the magazine 20, which is now empty after all of the lead frames have been pushed out, is also pushed out by the ejection mechanism 26 on the supply side.

By the way, the position of the magazine 20 on the elevator 21 with respect to the bonding station 24 is fixed, and if the magazine 20 is not fixed in the correct position not only horizontally but also vertically, it will not be able to connect to the lead frame in the specified position. It will no longer be sent out. Therefore, as shown in FIGS. 5 and 6, a vertical and horizontal guide plate 27 is formed on the elevator 21, and a plate spring 28 that presses and fixes the magazine 20 in the vertical direction and a plate spring 28 that faces the guide plate 27 and presses and fixes the magazine 20 in the vertical direction A plate spring 29 is attached to press and fix the magazine 20 in the vertical and horizontal directions, thereby fixing the magazine 20 vertically and horizontally.

[Problem that the invention attempts to solve]

However, in the conventional fixation of the magazine 20 using the plate springs 28 and 29, the fixation of the magazine 20 is maintained by increasing the elasticity of the plate springs 28 and 29. The fixing and releasing of the fixing had to be done manually, which placed a heavy burden on the workers and was inefficient.

The present invention, in such an automatic magazine supply and exchange device, automatically fixes and releases the magazine to and from the elevator by using the elevator's elevation.
The object of the present invention is to provide a magazine fixing mechanism that allows accurate bonding work and facilitates magazine supply and exchange.

[Means for solving problems]

In the present invention, a magazine fixing member is attached so as to be slidable in the horizontal direction, and the magazine fixing member is always horizontally pressed by a spring to fix the magazine to an elevator that is placed in the upper limit position and is sequentially lowered. A cam member having peaks projecting upward and downward is installed so as to be pushed back against the spring at the upper and lower limit positions of the elevator to release the fixation of the magazine, and furthermore, the magazine is constantly held in the elevator by the spring. A magazine automatic, characterized in that a lever that is pressed downward and fixed is pivotally mounted, and a release block is provided oppositely for reversing the lever at the upper and lower limit positions of the elevator and releasing the fixation of the magazine by the lever. This is a magazine fixing mechanism in a supply exchange device.

〔Example〕

An embodiment of the present invention will be described with reference to the drawings. In FIGS. 1a and 2, 1 shows a magazine holding stand 3 that moves up and down along a guide bar 2' by the rotation of a feed screw 2. In this elevator, a track base 4 is fixed to the lower surface of a magazine holding base 3. A sliding member 5 is engaged with the track base 4. For example, as shown in FIG. A magazine fixing member 7 having a magazine fixing claw 6 is fixed. Also, a spring 8 is attached to the magazine fixing member 7.
One end of the spring 8 is fixed, and the other end of the spring 8 is fixed to the magazine holding base 3, and the magazine fixing member 7 is always pressed in the direction of the magazine holding base 3 (horizontal direction) by the spring 8.

Further, the ends of the magazine fixing member 7 are arranged so that they are pushed back against the spring 8 when the elevator 1 ascends and descends and reaches the upper and lower limit positions.
A cam member 9 with protruding peaks on the top and bottom is installed in the frame (not shown) of the elevator 1 in parallel with the feed screw 2, and a cam member 9 is installed at the end of the magazine fixing member 7 that contacts the cam member 9. Preferably, a roller 10 is provided.

In addition, the elevator 1 includes a lever 1 that presses and fixes the magazine 11 from above onto the magazine holding table 3.
2 is rotatably pivoted by a pin 13 fixed to the elevator 1, and near one end thereof is connected to a spring 14 fixed to the elevator 1 so as to be constantly pulled up, and on the opposite side of the pin 13 the magazine 1
It is designed to press 1. In addition, lever 1
It is preferable to attach rollers 15, 15' to both ends of the lever 12, and an arm 1 having rollers 16, 16' at both ends is preferably attached to the pressing side of the magazine 11 of the lever 12.
It is preferable that the rollers 16, 16' press the magazine 11 by pivotally mounting the rollers 7.

Furthermore, when the frame (not shown) of the elevator 1 is at the upper limit position where the elevator 1 is raised, the roller 15 at one end of the lever 12 is pushed down against the spring 14 of the lever 12 to the opposite side of the pin 13 of the lever 12. A lever 1 is fixed to the frame of the elevator 1 (not shown) at the lower limit position where the elevator descends.
Push up the roller 15' at the end of the lever 12.
A release block 18' for releasing the pressure on the magazine 11 is fixed.

When the magazine 11 containing the lead frame is fed onto the magazine holder 3 [Fig. 1a], the elevator 1 is raised together with the magazine fixing member 7 by the rotation of the feed screw 2, and the upper limit of the When the magazine fixing member 7 reaches the position, the roller 10 at the end of the magazine fixing member 7 reaches the upper part of the cam member 9, and the magazine fixing member 7 is pushed back as the sliding member 5 slides on the track base 4 against the spring 8. Therefore, the magazine fixing claw 6 is separated from the magazine holding base 3,
At the same time, the roller 15 of the lever 12 is also pushed down by the release block 18, and the pin 1
The opposite side of 3 is lifted upwards. then,
The magazine 11 is fed onto the magazine holding table 3.

Next, when the magazine is fixed [FIG. 1b], the elevator 1 is lowered by the feed screw 2, and when the roller 10 of the magazine fixing member 7 comes off the top of the cam member 9, the spring 8 As a result, the magazine fixing member 7 is pressed, and the magazine fixing claw 6 presses the magazine 11.
At the same time that the magazine is fixed between the magazine fixing claw 6 and the vertical surface formed at a predetermined position of the magazine holding base 3, the roller 15 of the lever 12 also separates from the release block 18, so the spring 14 returns to its original state. The magazine 11 is also fixed vertically by a lever 12. Then, while the magazine 11 is fixedly held in a predetermined position, the lead frames stored vertically in the magazine 11 at a constant pitch are taken out by the intermittent lowering of the elevator 1. is protected.

Once the lead frame has been removed from the magazine 11, the magazine will be ejected (Fig. 1c).
When the elevator 1 reaches the lower limit position, the roller 10 at the end of the magazine fixing member 7 reaches the peak at the bottom of the cam member 9, and is pushed back against the spring 8, as in the case of supplying the magazine, and the magazine fixing claw 6 is pushed back.
At the same time as the lever 12 is opened, the roller 15' of the lever 12 is also pushed up by the release block 18', and the fixation of the magazine 11 by the lever 12 is also released, so that the magazine 11 can be easily ejected.

In the above-mentioned embodiment, the supply side of the bonding apparatus that supplies the magazine containing the lead frame to be bonded was explained.
It is also used on the ejection side, where a bonded lead frame is taken into an empty magazine and then ejected.

[Effect of idea]

As described above, according to the present invention, the predetermined position of the magazine being worked on is automatically and stably secured as the elevator moves, and the magazine is easily fed and discharged, reducing the work. , which has an extremely useful effect in improving production efficiency.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment of the present invention, Figures 1 a to c are side views of essential parts showing each operating state, Figure 2 is a bottom view taken along line A-A in Figure 1, Fig. 3 is a sectional view taken along the line B-B in Fig. 2, Fig. 4 is an overall explanatory diagram of a conventional automatic magazine supply/exchange device, Fig. 5 is a side view of the vicinity of a conventional elevator, and Fig. 6 is Fig. 5. It is a sectional view taken along the line CC. 1... Elevator, 2... Feed screw, 3... Guide bar, 3... Magazine holding stand, 4... Track base, 5... Sliding member, 6... Magazine fixing claw, 7... Magazine fixing Member, 8...Spring, 10...Roller, 11...Magazine, 12...
...Lever, 13...Pin, 14...Spring,
15, 15', 16, 16'...Roller, 17...
Arm, 18, 18'...Release block, 20
... Magazine, 21 ... Elevator, 22 ... Feed screw, 22' ... Guide bar, 23 ... Carrier, 24 ... Bonding station, 25 ...
...Bonding arm, 26...Ejection mechanism, 27
...Guide plate, 28, 29...Plate spring.

Claims (1)

[Scope of utility model registration request] A magazine fixing member that fixes the magazine by being constantly pressed horizontally by a spring is attached so as to be slidable in the horizontal direction on an elevator that is placed with a magazine at the upper limit position and is sequentially lowered. and a cam member having peaks projecting upward and downward is installed in the elevator so that it is pushed back against the spring at the lower limit position to release the fixation of the magazine, and further the magazine is constantly pressed downward by the spring in the elevator. An automatic magazine supply and exchange device characterized in that a lever to be fixed is pivotally mounted, and a release block is provided oppositely for reversing the lever at the upper and lower limit positions of the elevator to release the fixation of the magazine by the lever. Magazine fixing mechanism.