JPH104105A - Lead frame loader - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make possible the simplification of the constitution of a lead frame loader and the enhancement of the productivity and economical efficiency of a device due to the simplification by a method wherein the lead frame loader is constituted into a structure, wherein a suction means is arranged in such a way that it is carried along one direction by a carrying means and, at the same time, an elevator mechanism and a placement part are arranged along the carrying direction of the suction means. SOLUTION: A magazine M in which a plurality of lead frames L are stacked is held on an elevator mechanism 1 and, at the same time, an elevating operation is energized to the magazine M. An encapsulating carrier H, in which the plurality of the lead frames L are housed on the same plane, is placed on a placement part 2. Moreover, the lead frame L stacked at the uppermost position in the magazine M placed on the mechanism 1 is sucked by a suction means 3 and the suction means 3 is carried between the mechanism 1 and the placement part 2 by a carrying means 4. With the suction means 3 arranged in such a way that the suction means 3 is carried along one direction by the carrying means 4, the mechanism 1 and the placement part 2 are arranged along the carrying direction of the suction means 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lead frame loader, and more particularly, to a lead frame loader in a process before resin encapsulation.

[0002]

2. Description of the Related Art A lead frame loader is a device for individually arranging a plurality of lead frames housed in a magazine on a plate-shaped sealing carrier for sealing a resin. The configuration shown has been used.

[0003] This conventional lead frame loader 50 is
As shown in FIG. 2, an elevator mechanism 51 for vertically moving a magazine M that accommodates the lead frame L, a projecting portion 52 for pushing the lead frames L of the magazine M one by one by pushing a projecting member into the magazine M,
A pull-out guide section 53 for pulling out the extruded lead frame L and sending it to the transport section 54 side;
And a fixed stopper 55 and an intermediate stopper 56 for determining the alignment position of the lead frame L.
And a carrier lifter section 57 for setting the lead frame L to the enclosed carrier H after the alignment of the lead frame L.

In the above-mentioned conventional example, when the magazine is moved up and down by the elevator mechanism 51 and the predetermined lead frame L is positioned at the position of contact with the projecting member of the projecting section 52, the projecting member moves the magazine to the drawer guide section 53 side. The lead frame L is pushed out, and the lead frame L is completely pulled out of the magazine by the draw-out guide portion 53 and is sent to the transport portion 54 side, and is transported by the transport portion 54 to a position where it is engaged with the fixed stopper 55 and the intermediate stopper 56. After that, the lead frame L is stored in the enclosed carrier H by the carrier lifter 57.

[0005]

However, in the conventional lead frame loader 50, there are many process operations in the aligning operation from the removal of the lead frame L in the magazine M to the enclosing carrier H, thereby energizing each operation. Since the mechanical configuration becomes complicated, the number of parts required for assembling the entire apparatus increases, and when performing operation control on such an apparatus, control of each process is complicated, and program software for the control is complicated. Therefore, the manufacturing cost of the apparatus is relatively high, and there are problems such as difficulty in handling during maintenance.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to provide a lead frame loader capable of simplifying the structure and thereby improving the productivity and economy of the apparatus.

[0007]

According to the first aspect of the present invention, there is provided an elevator mechanism for holding a magazine for accommodating a plurality of lead frames in a stacked state and urging the magazine to move up and down, and a plurality of lead frames. A mounting section for mounting an enclosing carrier that spreads and stores the same on the same plane, suction means for suctioning a top lead frame in the magazine mounted on the elevator mechanism, and an elevator mechanism including the suction means. Transport means for transporting the paper to and from the mounting portion.

Further, in addition to the above configuration, a configuration is adopted in which the suction means is transported along the one direction by the transport means, and the elevator mechanism and the mounting section are arranged along the transport direction of the suction means. I have.

In the above arrangement, the suction means is previously moved above the elevator mechanism by the transport means, and the elevator mechanism moves the magazine upward toward the suction means. The uppermost lead frame in the magazine approaches the suction means, and the suction operation of the suction means sucks the uppermost lead frame.

[0010] Then, the suction means is transported by the transport means to the enclosing carrier of the mounting portion, and the suction state of the attraction means is released, and the lead frame is stored in the enclosing carrier.

The above operation is repeatedly performed, and a plurality of lead frames are arranged in the sealed carrier along the carrying direction of the carrying means.

According to a second aspect of the present invention, the same structure as that of the first aspect of the invention is provided, and the elevator mechanism has
A configuration is adopted in which a holding area capable of holding a plurality of magazines at once is provided, and a plurality of suction means are provided corresponding to each of the magazines.

A plurality of magazines are simultaneously arranged in the elevator mechanism, a plurality of lead frames are simultaneously sucked by individual suction means corresponding to each magazine, and a plurality of lead frames are simultaneously stored by the transport means. In such a configuration, a plurality of rows of lead frames are arranged in the sealed carrier along the transport direction.

According to the third aspect of the present invention, the first or second aspect is provided.
In addition to having the same configuration as the described invention,
A configuration is employed in which a lifting mechanism for raising and lowering the suction means is provided.

In this configuration, the same operation as the configuration described in claim 1 or 2 is performed. Further, when the lead frame is sucked by the suction means, the operation of bringing the lead frame close to the lead frame also includes an elevating mechanism. Done by After the suction, the suction means is once raised, transported to the mounting portion, and then lowered so as to approach the sealed carrier.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIG. The present embodiment shows a lead frame loader 10 in which a plurality of lead frames housed in a magazine are individually arranged on a plate-shaped sealing carrier for sealing a resin.

The lead frame loader 10 is a magazine M for storing a plurality of lead frames L in a stacked state.
And an elevator mechanism 1 for urging the magazine M to move up and down, a mounting section 2 for mounting an encapsulated carrier H for accommodating a plurality of lead frames L on the same plane, and an elevator mechanism 1. A suction unit 3 for sucking the uppermost lead frame L in the loaded magazine M, and a module 4 as a transfer unit for transferring the suction unit 3 between the elevator mechanism 1 and the mounting unit 2 are provided. ing.

To explain each part, first, a plurality of lead frames L are housed in a box-shaped magazine M in a state of being vertically stacked in advance. The above-mentioned elevator mechanism 1
A holding table 1A is provided as a holding area for holding two magazines M. On the holding table 1A, the two magazines M are arranged along a direction orthogonal to a transport direction of a module 4 described later. That is, they are arranged on the near side and the far side in FIG. 1 (in FIG. 1, one is held on each of the near side and the far side, but the magazine M arranged on the far side is located on the near side. It is not shown because it is hidden by the magazine M).

The elevator mechanism 1 moves the holding table 1A holding the two magazines M upward by one sheet of the lead frame L each time the lead frame L in the magazine M is taken out by the suction means 2. .

The suction means 3 is provided with two suction nozzles 3A directed downward, and air is sucked in from the tip of the suction nozzle 3A. This allows
By approaching the suction nozzle 3A, the lead frame L is drawn and held by suction.

Two suction means 3 are provided on the module 4 along the direction perpendicular to the conveying direction of the module 4 in correspondence with the above-mentioned magazine M (in FIG. 1, the same as the magazine M in FIG. 1). The suction means 3 provided on the front side and the back side thereof is provided one by one, but the suction means 3 disposed on the back side is hidden by the suction means 3 on the front side and cannot be seen, so that it is not shown).

Each of the suction means 3 is provided with an elevating mechanism 5 so that the suction means 3 can be moved up and down with respect to the module 4.

Next, the module 4 will be described. The module 4 includes a slider 4B provided with the suction means 3 and the elevating mechanism 5 as described above, and the elevator mechanism 1
, A linear guide rail 4A disposed in one direction between the mounting portion 2 and a driving motor (not shown), and a slider 4B which changes the rotational force of the driving motor into a moving force along the guide rail 4A. And a transmission mechanism (not shown) for transmitting the power to the motor.

The mounting section 2 is disposed adjacent to the elevator mechanism 1, and the enclosed carriers H mounted on the mounting section 2 correspond to the two magazines M held by the elevator mechanism 1. (In FIG. 1, as in the case of the magazine M, one row is provided for each of the front side and the back side, but the rear side row is for the front side. It is not shown because it is hidden by the columns).
Each of the storage sections can store two lead frames L in the direction in which the guide rails 4A are arranged, whereby 2 ××
2, four lead frames L can be stored.

The operation of this embodiment having the above-described components will be described.

The two suction means 3 are transported by the module 4 so as to be above the elevator mechanism 1 (position A). On the other hand, two magazines M are held on the holding table 1A of the elevator mechanism 1, and these magazines M are raised to a predetermined distance toward the suction means 3.

Each of the suction nozzles 3A of the suction means 3 starts sucking, and the elevating mechanism 5 causes the tip of each of the suction nozzles 3A to approach the uppermost lead frame L in the magazine M. Thus, each suction unit 3 suction-holds the lead frame L one by one from each magazine M, and the lifting operation is urged by the lifting unit 5.

First, each suction means 3 is transported by the module 4 to the position of the storage section on the left side of each row of the sealed carriers H on the mounting section 2 (position B). Then, the suction means 3 is lowered by the elevating means 5 and the suction state is released, and each lead frame L is stored in the enclosing carrier H. At this time, the lead frame L is left with a slight gap from the upper surface of the encapsulating carrier H, and the positioning pins H1 provided on the encapsulating carrier H are connected to the lead frame L
Is inserted into the guide hole.

When the lead frame L is stored in the enclosing carrier H, each suction means 3 is moved upward again by the elevating means 5 and returned to the position A by the module 4. Then, the lead frame L is sucked and held in the same manner as described above, and is transported by the module 4 to the position of the storage section on the right side of each row of the sealed carriers H on the mounting section 2 (position C).

Then, the suction means 3 is lowered by the elevating means 5 and the suction state is released, and each lead frame L is stored in the sealed carrier H. As a result, the four lead frames L are housed on the same plane in the enclosing carrier H, and the enclosing carrier H on the mounting portion 2 is replaced with a non-housing carrier, so that the housing operation of the lead frame L is continuously performed. It is done.

The positioning operation at each position by the module 4 may be provided with a position detection sensor for each position and performed by detection of the suction means 3. Alternatively, the drive motor of the module 4 may be a stepping motor, and the positioning may be performed by a predetermined rotation amount.

As described above, according to the present embodiment, the elevator mechanism 1 for holding the magazine M, the mounting section 2 for mounting the encapsulated carrier, and the suction means 3 for suctioning the lead frame L
And a module 4 for transporting the suction means 3. The number of components is reduced as compared with a conventional lead frame loader, and the number of components in each part is reduced. However, the number of operation steps can be reduced, the hardware and software aspects can be simplified, the manufacturing cost of the entire apparatus can be reduced, and the economy and productivity can be improved. At the same time, the simplification of the mechanism makes it possible to improve the maintainability and operability of the entire apparatus and reduce the size of the entire apparatus.

Further, since the transfer between the elevator mechanism 1 and the mounting section 2 is carried out in a straight line, the transfer means can be simplified more than before, and the number of components can be further reduced.
It is possible to further improve economy and productivity.

Further, since the lead frame L is sucked by the suction means 3 by the suction force of air and transported, the possibility of the lead frame L being damaged or the like is effectively reduced as compared with the prior art. It is possible to improve reliability.

Further, since the two suction means 3 are mounted, two lead frames L can be transported and stored at one time, thereby improving work efficiency.

Further, since the lifting mechanism 5 is provided,
When the lead frame L is transported, the lead frame L held by the suction means 3 can be retracted upward,
Thereby, contact of an obstacle with the lead frame L can be prevented, and the maintainability of the lead frame L and the reliability of the device can be improved.

[0037]

As described above, the present invention mainly comprises an elevator mechanism for holding a magazine, a mounting section for mounting an encapsulated carrier, suction means for suctioning a lead frame, and a transport means for transporting the suction means. And a conventional protruding part, a draw-out guide part, a transport mechanism part using rollers and a transport system, an elevating intermediate stopper mechanism part for guiding the position of the lead frame, and a lead frame on the transport belt are aligned with the sealed carrier. Compared to a lead frame loader consisting of an enclosed carrier lifter
The number of components is reduced, the number of components in each part is reduced, the number of operation steps is reduced in terms of control, the hardware and software are simplified, and the manufacturing cost of the entire device is reduced. Thus, it is possible to improve economic efficiency and productivity. At the same time, the simplification of the mechanism makes it possible to improve the maintainability and operability of the entire apparatus and reduce the size of the entire apparatus.

Further, since the transfer between the elevator mechanism and the mounting portion is performed in one direction, the transfer means can be simplified, the number of components can be reduced, and the economy and production can be improved. It is possible to improve the performance.

Furthermore, since the lead frame is held and transported by the suction means while being sucked, the possibility of causing a scratch or the like on the lead frame is effectively reduced as compared with the related art, and the reliability of the entire apparatus is improved. It is possible.

When a plurality of suction means are mounted, a plurality of lead frames can be stored at one time, thereby improving the work efficiency.

Further, when a lifting mechanism is provided, the lead frame held by the suction means can be retracted upward when the lead frame is transported.
The contact of the lead frame with an obstacle can be prevented, and the maintainability of the lead frame and the reliability of the device can be further improved.

As described above, according to the present invention, it is possible to provide an unprecedented excellent lead frame loader.

[Brief description of the drawings]

FIG. 1 is a schematic front view showing an embodiment of the present invention.

FIG. 2 is a schematic front view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Elevator mechanism 2 Mounting part 3 Suction means 4 Module (transportation means) 5 Elevating mechanism 10 Lead frame loader H Enclosed carrier L Lead frame

Claims (3)

[Claims] An elevator mechanism for holding a magazine for accommodating a plurality of lead frames in a stacked state and for urging the magazine to move up and down, and a sealed carrier for accommodating a plurality of the lead frames on the same plane. A mounting portion for mounting, suction means for suctioning a top lead frame in the magazine mounted on the elevator mechanism,
Transport means for transporting the suction means between the elevator mechanism and the mounting section, wherein the transport means transports the suction means in one direction and the elevator mechanism and the mounting section; Are arranged along the transport direction. 2. The elevator mechanism according to claim 1, wherein a plurality of magazines are held at a time in the elevator mechanism, and a plurality of suction means are provided for each of the magazines. Lead frame loader. 3. An apparatus according to claim 1, wherein said transport means is provided with a lifting mechanism for lifting and lowering said suction means.
The lead frame loader as described.