JPS61144030A - Semiconductor device assembling machine - Google Patents

Abstract

PURPOSE:To prevent a semiconductor device assembling machine from being stopped caused by delayed exchange of magazines, by automatically supplying a prework magazine to a frame supplying section while automatically discharging a postwork magazine from a frame receiving section. CONSTITUTION:A prework magazine 2 disposed on a frame supplying section 1 is fed to a frame supplying section elevator 13 by a prework magazine feeding mechanisms, as indicated by the arrow A. Frames to be worked are conveyed as indicated by the arrow D together with the prework magazine 2, and taken out one by one as indicated by the arrow E from the prework magazine 2a as the frame supplying section elevator 13 descends, so that they are assembled on a work stage 6. The assembled frames are then received one by one, as indicated by the arrow F, in a postwok magazine 4a disposed on a frame receiving section elevator 14. The emptied prework magazine 2a is transported as indicated by the arrow B and transferred onto the receiving section elevator 14 as an empty postwork magazine 4a. On the other hand, the postwork magazine 4 which has received all the frames is discharged via a conveying path G as indicated by the arrow C.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a semiconductor device assembly apparatus using a lead frame, and more particularly to a semiconductor device assembly apparatus in which a lead frame feeding and storage mechanism is automated. 'It's a thing. - [Prior Art] A semiconductor device assembler a places a semiconductor pellet on a metal plate (hereinafter simply referred to as frame) that is fitted with a lead frame, connects it, encapsulates it, shapes it, stamps it, etc. Consists of processes. In many cases in these processes, the frame is supplied from a magazine case (hereinafter simply referred to as magazine) and then stored again in the magazine. FIG. 5 is a diagram showing its principle. That is, the pre-work frame 5a is connected to a supply magazine (hereinafter referred to as pre-work magazine 2) attached to the frame supply section l.
After the frames are fed two by two to the work stage 6 and subjected to the predetermined assembly work, they are placed in a storage magazine (hereinafter referred to as the worked magazine 4) installed in the frame storage section 3 as a worked frame 5b. F pieces are stored one by one. In this figure, the frame supply section 1 is lowered step by step by a mechanism such as a motor and screws (not shown), and the frame storage section 3 is raised step by step to supply and store frames one by one.

[Problem that the invention seeks to solve]

Traditionally, magazines were replaced and installed manually by workers, so when the magazine in the frame supply section became empty,
Alternatively, when the magazine in the frame storage section became full, it was necessary to stop the device and replace the magazine with a new one by one worker. Therefore, the downtime of the equipment was wasted, leading to a decrease in productivity.

In order to solve this problem, a frame storage mechanism as shown in the side view of FIG. 6 is used. This storage mechanism is guided by a guide shirt) 8Vc and moved up and down by a feed screw 9.
The elevator has 7t-, and the feed screw 9 has a gear 11ff.
It is rotated by a motor 10 via i. In addition to the completed magazine y4a that is being stored in the frame, the empty magazine y4b
i can hold. After the storage of 7 frames into the worked magazine 74a is completed, the entire mechanism is moved laterally by a drive source such as the air cylinder/dah 12, and the storage work into the empty magazine y4b is started. If the operator replaces the worked magazine y4at with a new empty magazine while storing it in the empty magazine 4b, the apparatus 1 will not stop.

□ However, as the speed of assembly equipment has increased, the frequency of replacing magazines every few minutes has increased, so it is necessary to install magazines before work and collect empty magazines at the supply side, and to install empty magazines and collect worked magazines at the storage side. The disadvantage is that the time required increases, and particularly when one worker operates a plurality of assembly devices, work efficiency decreases and sometimes the devices stop.

An object of the present invention is to significantly reduce the number of man-hours required for replacing magazines by eliminating the above drawbacks.

An object of the present invention is to provide a semiconductor device assembly WLt that can improve work efficiency and productivity.

[Means for solving problems]

The present invention provides a pre-work magazine supply mechanism that supplies a magazine containing pre-work frames to a frame supply section, an empty magazine discharge mechanism that discharges an empty magazine whose frames have been supplied from the supply section, and a frame storage section. An empty magazine supply mechanism that supplies empty magazines, a worked magazine discharge mechanism that discharges worked magazines whose frames have been stored in the same storage section, and the above-mentioned empty magazine discharge mechanism and empty magazine supply mechanism are connected. This is a semiconductor device assembly device including an empty magazine transport mechanism and a metal.

゛　[Example] Next, the present invention will be explained using examples and with reference to the drawings.

FIG. 1 is a perspective view for explaining the positional relationship among a frame supply section, a frame storage section, and an i-gauge in an embodiment of the present invention.

In FIG. 1, magazines 2 are juxtaposed on a frame supply section 1 by an operator before being worked on. Magazine 2 before work
is supplied to the frame supply section elevator 13 by a magazine supply mechanism (not shown) before the second operation. Arrow A shows the movement of the magazine during that time. - In the unlikely event that a frame before work (not shown) is transported together with the pre-work magazine 2 as shown by the arrow, it is pulled out one by one from the pre-work magazine y2m as shown by the arrow E as the frame supply elevator 13 descends. , predetermined assembly work is performed on the work stage 6. As shown by arrow F after 76, the sheets are stored one by one in the worked magazine 4a on the frame storage elevator 14. In this way, the magazine y before work on the supply section elevator 13 is
2a becomes empty and storage in the worked magazine 743 on the storage elevator 14 is completed, the empty unworked magazine 72a is discharged and conveyed as shown by arrow B and moved onto the storage elevator 14. , 74 m of empty and worked magazines. −
The worked magazine 4 whose frames have been stored is discharged as indicated by arrow C by a worked magazine discharge mechanism (not shown) of the frame storage section 3.

Arrow G indicates the transport path of the worked frame.

Next, details of the mechanism of the embodiment shown in FIG. 1 will be further explained.

2 and 3 are side views of the same embodiment, and FIG. 4 is a partial side view of the same embodiment.

In Fig. 2, the magazine 72 before work containing the frame 5a before the work, the ald supply section elevator 13, with #C%
It is held and fixed by the magazine holder 17a and the air cylinder 18m. Similarly worked frame 5bO
T! The completed work/4a is in the storage elevator 1.
4, and is held and fixed by the magazine holder 17b and the air cylinder 18bK. As the assembly work progresses, the frame supply elevator 13 is lowered by the feed screw 16a driven by the motor 15a, and the motor 1
The frame storage elevator 14 is raised by the feed screw 16b driven by the feed screw 5b, and the worked frame 5b is gradually stored in the worked magazine y4a.

When the pre-work magazine 2a is empty, the magazine holder 17
a releases magazine 2at-. The elevator 13 continues to descend, and when it descends to a position lower than the magazine sliding plate 26, it temporarily stops. Next, the magazine ejecting plate 23 is actuated by the air cylinder 24, and the empty magazine y2ak before work is discharged to the outside of the supply section elevator 13. This is the empty magazine ejection mechanism.

Further, the unworked magazines 2 juxtaposed in the frame supply section 1 are pushed by the magazine supply claw 21a rotatably attached to the slidable worked magazine supply rod 19a by the air cylinder 2QaK. It can move on the frame supply section l. This is the pre-operation magazine supply mechanism.

Further, as shown in FIG. 3, a new pre-operation magazine 2 is supplied onto the frame supply section magazine holding table 22a which has been previously moved above the supply section elevator 13 by a drive source (not shown).

-1. The worked frame 4aH1 continues to rise while being held in the storage elevator 14, and when it reaches the upper limit of the elevator, a drive source (not shown) moves the frame storage magazine holding stand 22b to the 3
As shown in the figure, the magazine holder 17b is released as it moves below the worked magazine y4a, and the storage elevator 14 begins to descend, so the worked magazine y4B remains on the holding table 22b. Next, the slidable worked magazine discharge rod 19b is moved by the air cylinder 20b to prepare for discharge of the worked magazine 4a. At this time, the supply section elevator 13 is ascending and the storage section elevator 14 is descending, but the magazine 2 before work on the supply section magazine holding table 22a is held and fixed by the holding table rule a and the supply claw 21a. , it is possible to supply the lowermost pre-work frame 5ct onto the work stage. For this reason, the assembly work.

There are no particularly long interruptions for magazine replacement work.

The frame storage elevator 14 continues to descend.

As shown in FIG. 4, when it descends to a position lower than the magazine sliding plate 26, it stops temporarily. Next, the air cylinder 24 is pushed completely by the air cylinder 25, and the magazine pushing plate 23 is further operated to press and hold the empty magazine 2bi at one end of the sliding plate 26. This is an empty magazine ejection mechanism and an empty magazine ejection mechanism. At this point, the completed frame 5b can be stored, so the frame storage after one assembly operation will not be interrupted for a long time.

Thereafter, when the frame supply side elevator 13 reaches its maximum limit, the magazine presser 17a holds and fixes the magazine 2t before operation, and the -m←kine supply section magazine holding stand 22a returns to its original position It. Further, when the lowered frame storage elevator 145E reaches the empty magazine y2b @VC, the magazine presser 17b holds and fixes the empty magazine y2bt. Furthermore, the magazine ejector t9b of the storage section is moved by the air cylinder 20b, and the worked magazine 4t is ejected by the magazine push-out claw 21b. This is the worked magazine ejection mechanism. Thereafter, the storage section magazine holding stand 22b returns to its original position.

〔Effect of the invention〕

As explained in detail above, one advantage of the present invention is that it is possible to automatically supply unworked magazines to the frame supply section and discharge worked magazines from the frame storage section through a series of operations. take an umbrella During this time, the operator does not need to be directly involved in the magazine replacement work, and at any time during the operation of the machine, the operator can place the machine on the upper frame supply section of the magazine before work, and similarly remove the work that has been done. All you have to do is take out the magazine from the frame storage. Therefore, work efficiency is improved, and since there is no longer a need for the machine to stop because the magazine cannot be replaced in time, productivity is greatly improved.

In this embodiment, the frame supply section and the frame storage section are placed on the same side of the work stage, but as shown in Fig. 5, they are placed in the same line across the work stage plate, and are separated from the frame supply section. The same effect can be obtained even when a means for transporting an empty magazine to the frame storage section is provided.

[Brief explanation of the drawing]

FIG. 1 is a perspective view for explaining the positional relationship between a frame supply section, a frame storage section, and a magazine in an embodiment of the present invention, and FIG. 2 and #! Figure 3 is a side view of the same embodiment;
FIG. 4 is a side view of the same part, and FIG. 5 is a principle diagram of a frame supply/storage section in a conventional semiconductor device assembly apparatus. 6
The figure is a side view of an example of a conventional frame storage section. 1... Frame supply section, 2.2a...
Magazine before work, 2b... Empty magazine y & 3. ．．
．． ．． ...Frame storage section, 4.4a...Worked magazine 14b...Empty magazine% 5a, 5c
...Frame before work% 5b...Worked frame, 6...Work stage%7...
・・Elevator, 8・・Guide shaft, 9・
...Feed screw, 10...Motor, 11.
...gear, 12...work 1'/I):/1
．． 13... Frame supply section elevator, 14.
...Frame storage elevator, 15a. 15b...Motor, 16a, 16b...
・Feed screw. 17 a, 17 b---・-=・Magazine holder,
18a, 18b...Air cylinder 7, 19a-...
...Magazine supply rod. 19b...Magazine ejection rod% 20a, 20'
b... Air cylinder, 21a... Old magazine supply claw, 21b... Magazine ejection claw, 22a...
Old...Frame supply section magazine holding stand, 22b...
...Frame storage magazine holding stand, 23...
Magazine replacement plate, 24゜25...Air cylinder, 26...Magazine sliding plate.

Claims (1)

[Claims] A semiconductor device having a lead frame supply unit that supplies a lead frame that has been stored in a magazine case before a predetermined assembly operation, and a lead frame storage unit that stores the lead frame that has undergone a predetermined assembly operation in the magazine case. In the assembly apparatus, a pre-operation magazine supply mechanism supplies a magazine case to the lead frame supply section, an empty magazine ejection mechanism that discharges an empty magazine after lead frame supply has been completed in the supply section, and the lead frame storage section. an empty magazine supply mechanism for supplying an empty magazine to a storage section; a worked magazine discharge mechanism for discharging a worked magazine whose lead frame has been stored in the same storage section; and the empty magazine discharge mechanism and the empty magazine supply mechanism. 1. A semiconductor device assembly apparatus comprising an empty magazine transport mechanism connected to the empty magazine transport mechanism.