JPH012940A - Lead frame magazine supply conveyance device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a lead frame magazine supply and conveyance device used in IC assembly devices such as die bonding devices, wire bonding devices, and encapsulating devices.

[Conventional technology]

Normally, the lead frame magazine placed on the lead frame magazine supply conveyor is positioned on the conveyor, and transferred to the elevator by some means, and the lead frames stored in the lead frame magazine are cut out one by one.

Conventionally, when transferring lead frame magazines from a lead frame magazine supply conveyor to an elevator, the continuous lead frame magazines were separated, clamped with a lead frame magazine hand, and moved up, moved, and lowered to be received by the elevator. was passing it on.

[Problem that the invention seeks to solve]

The conventional lead frame magazine supply and conveyance device described above has a mechanism for loading and unloading the lead frame magazine separately from the elevator, which makes the mechanism complicated and expensive, making it uneconomical. There are disadvantages such as long reloading time.

SUMMARY OF THE INVENTION An object of the present invention is to provide a lead frame magazine supply and conveyance device that solves the above-mentioned problems.

[Differences between the invention and the prior art]

”Double conventional lead frame magazine supply conveyance system
In contrast to f, the present invention has the following points: it simplifies the mechanism for receiving and taking the lead frame magazine directly from the lead frame magazine supply conveyor, and shortens the time required to reload the lead frame magazine.

[Means for solving problems]

The present invention provides a lead frame magazine supply and conveyance device that sequentially loads lead frame magazines mounted on an IC assembly device and placed on a lead frame magazine supply conveyor onto an elevator, and sequentially cuts out the lead frames stored in the lead frame magazines. , a lead frame magazine supply and conveyance device characterized in that an elevator is provided with a mechanism for delivering and receiving lead frame magazines placed on a lead frame magazine supply conveyor.

〔Example〕

Next, one embodiment of the present invention will be described in detail using the drawings.

(Embodiment 1) FIGS. 1(a) and 1(b) show a first embodiment of the present invention, in which (a) is a plan view and (b) is a front view. Figure 1(a).

In (b), several lead frame magazines 1 containing lead frames 2 are mounted on supply conveyors 3a and 3b. Sprockets 5a, 5b are fixed to the side plates 4a, 4b, and the sprockets 5a, 5b
are respectively hung by supply conveyors 3a and 3b.

Sprocket 5 fixed to side plates 4a and 4b
8 are connected to each other by a shaft 7, which is coaxial with the shaft of the motor 6.

Therefore, if the motor 6 rotates in the input direction, the supply conveyor 3
a and 3b rotate, and the lead frame magazine 1 moves to the elevator side. Further, a support plate 8 is provided directly below the supply conveyors 3a, 3b to prevent the supply conveyors 3a, 3b from sagging. The lead frame magazine 1 at the head in the direction of movement of the lead frame magazine 1 is prevented from moving and positioned by stoppers 34a and 34b provided near the sprocket 5b. A storage conveyor 9 having the same mechanism as the supply conveyors 3a, 3b is located below the supply conveyors 3a, 3b, and an empty lead frame magazine 1 is placed on the storage conveyor 9. Like the supply conveyors 3a and 3b, the storage conveyor 9 is also driven by a motor (not shown), and rotates in the direction B opposite to the supply conveyors 3a and 3b. That is, the processed lead frame magazine 1
is collected.

Next, the elevator section will be explained.

Four bushes 23 are arranged in a square shape on the side surface of the main plate 22, and one screw block 24 is fixed in the center. Shaft 2++a, 2 passing through four bushes 23
5b and the ball screw 27 that engages with the screw block, and the L of the two support pars 28 located near the main plate 22.
The tip of the section is fixed to the support plate 26, and the tip of the 14 section is fixed to the base 33. Near the bottom of the ball screw 27, the elevator motor 29 is connected to the motor [-4 constant plate: 3
It is fixed to the base 33 via 2. A pulley 31 is fixed to the shaft of the elevator motor 29, and is connected to the ball screw 27 via a timing bell 1-30.

That is, when the elevator motor 29 rotates, rotational motion is transmitted to the ball screw 27, and when the elevator motor 29 rotates in the same direction, the main plate 22 descends, and when it rotates in the other direction, the main plate 22 rises.

Further, a sub-plate 17 is fixed to the end surface of the main plate 22.
A magazine moving cylinder 18 is fixed to the center of the cylinder 18, and a magazine holder 12 is fixed to the tip of the main shaft of the cylinder 18. Support pars 1 for supporting the magazine holder 12 are provided at the top and bottom of the magazine moving cylinder 18.
9a and 19b are provided, one end of which is the magazine holder 1.
The magazine holder has a U-shape, and a clamp cylinder 13 is attached to a part of the magazine holder. Further, a magazine vertically moving cylinder 14 is fixed to the lower part. Clampers 15 and 16 are fixed to the main shaft tip of the clamp cylinder 13 and the main shaft tip of the magazine vertically moving cylinder 14, respectively.

The magazine vertical movement cylinder 14 can move directly below the first magazine on the supply conveyors 3a, 3b by operating the magazine moving cylinder 18, and the clamp cylinder I3 can move directly above.

Next, the operation according to the present invention will be explained.

The lead frame magazine 1 placed on the supply conveyors 3a, 3b hits stoppers 34a, 34b and is positioned as the supply conveyors 3a, 3b rotate in six directions. After positioning, the supply conveyor 3a,
3b is stopped by a magazine detection sensor provided at the bottom of the leading lead frame magazine 1 (not shown).

Thereafter, the magazine holder 12 is moved forward toward the leading lead frame magazine 1 by the magazine moving cylinder 18. First, the magazine vertical movement cylinder 14 operates quietly to lift up the lead frame magazine 1. Next, the clamp cylinder 13 operates to clamp the lead frame magazine 1. This situation is shown in FIG.

At this time, since the force of the clamp cylinder 13 is weaker than the force of the magazine vertical movement cylinder 14, the lead frame magazine 1 does not shift in the vertical direction. After the lead frame magazine 1 is held by the magazine holder 2, the magazine moving cylinder 18 moves backward. After the magazine holder 12 is retracted by the magazine moving cylinder 18, the supply conveyor 3a.

3b rotates until the next lead frame magazine 1 is positioned and waits until the next supply. The lead frame magazine 1 held in the magazine holder 12 is lowered by an elevator motor drive, and the lead frames 2 in the lead frame magazine 1 are sequentially transported by a lead frame transport mechanism (not shown). When the lead frames 2 in the lead frame magazine 1 are exhausted, the magazine holder 12 is moved forward by the magazine moving cylinder 18 in order to discharge the empty lead frame magazine 1, and the empty lead frame magazine 1 is placed directly above the storage conveyor 9. move it. Next, the magazine vertical movement cylinder 14 is gently lowered, and then the clamp cylinder 13 is raised to release the clamp. Next, the storage conveyor 9 rotates in the direction B and moves the next empty lead frame magazine 1 by an amount that can be loaded thereon.

Furthermore, the magazine holder 12 is moved backward by the magazine moving cylinder 18, and the next lead frame magazine 1 is moved back.
is raised by the elevator motor 29 to hold the

The operations described above are repeated.

(Embodiment 2) FIG. 3 is a side view showing a second embodiment of the present invention. In FIG. 3, a clamp cylinder 13 similar to that in the first embodiment is fixed to the upper part of the magazine holder 12, and a clamper 16 is fixed to the tip of the cylinder shaft. Furthermore, the magazine vertical movement cylinder provided in the first embodiment is not provided at the bottom of the magazine holder 12. In operation, after the magazine holder 12 is moved forward by the magazine moving cylinder 18, the magazine holder 12 is moved forward by the elevator motor 2.
9 slowly rises and the lead frame magazine 1
lift up. After that, the clamp cylinder 13 operates.

Clamp the lead frame magazine 1. The subsequent operation is the same as in the first embodiment. In this embodiment, there is no need for a cylinder to lift the lead frame magazine 1, and the number of mechanical parts is reduced, so costs can be reduced.
Further, since the lead frame magazine 1 is placed directly on the magazine holder 12, the area for receiving the lead frame magazine 1 is increased, and there is an advantage that stability of the lead frame magazine 1 can be obtained.

〔Effect of the invention〕

As explained above, in the present invention, by providing the elevator with a mechanism for receiving and removing lead frame magazines, the lead frame magazine on the supply conveyor can be directly received and removed. can be reduced by about 10 seconds.

Furthermore, the number of mechanical parts is reduced and the structure is simplified, which greatly contributes to cost reduction.

Therefore, the present invention has the advantage of solving the conventional problems and providing an inexpensive and speed-up device.

[Brief explanation of drawings]

Part 1 (a) and (b) are views showing the first embodiment of the present invention, in which Fig. 1 (a) is a plan view, (b) is a front view, and Fig. 2 is a front view. FIG. 3 is a side view showing a second embodiment of the invention.

Claims (1)

[Claims] (1) In a lead frame magazine supply and conveyance device that sequentially loads lead frame magazines mounted on an IC assembly device and placed on a lead frame magazine supply conveyor onto an elevator, and sequentially cuts out the lead frames stored in the lead frame magazines. A lead frame magazine supply and conveyance device, characterized in that an elevator is provided with a mechanism for delivering and receiving lead frame magazines placed on a lead frame magazine supply conveyor.