JPS61141514A - Mold resin supplying device - Google Patents

Abstract

PURPOSE:To improve operability and yield by a method wherein multiple resin tablets are supplied from a stoker into a preheater and a pot smoothly in a short period of time. CONSTITUTION:A multi-joint arm main body 25 is reciprocated between the stoker 20 and a molding device 23 through the preheater 22 freely along a guide rail 24 while the space of throw-in port 32 of the molding device 23 is formed wide enough to permit to throw a multiple resin tablets 21 into the pot 33 smoothly within a short period of time. As a result, the operability of the device may be improved remarkably while the resin tablets 21 are thrown into the pot 33 correctly within a predetermined working time so that given characteristics of the resin tablets 21 are obtained at all times, therefore, the yield of the device may be improved.

Description

[Detailed description of the invention] [Technical field of invention] The present invention relates to a mold resin supply device.

[Technical background of the invention and its problems]

Conventionally, an apparatus as shown in FIG. 2 has been used to encapsulate semiconductor elements with resin by transfer soldering. In the figure, 1 is a stocker in which a large number of resin tablets 2 are stored.

A preheater 3 is provided adjacent to the stocker 1. A molding device 4 is installed next to the stocker 1. When sealing with resin, the operator takes out the required number of resin tablets 2 from the stocker 1, places them on the rotating electrode 5 which is the preheating part of the preheater 3, and preheats them for a required period of time. Next, the operator takes out the preheated resin tablet 2 in a close contact state, and as shown in FIG. . If the resin tablet 2 is manually supplied to the molding device 4 in this way, there is a problem that the workability is extremely poor and productivity is reduced.

FIG. 4 shows a mechanized system for carrying such a resin tablet 2. In the figure, reference numeral 10 denotes a stocker that supplies the required number of resin tablets 2 to the feeder 11 above it.

The resin tablet 2 supplied to the feeder 11 is gripped by the grip part 13 of the feeder 11 as shown in FIG. 5, which reciprocates between the stocker 10 and the preheater 12 adjacent thereto, and is supplied to the preheater 121C. There is. The preheated resin bulge 2 is pushed into a loader 150 input cup f16 provided in the molding device 14. Next, the rower 15 pulls up the charging cup 16 to the charging opening of the mold 11, opens the shutter at a position directly above the pot, and charges the resin tablet 2 into the four pots from the charging cup 16.

However, in such a device in which the low finisher 15 is incorporated into the molding device 14, the distance between the pot of the mold 17 and the plunger is usually about 90 degrees. For this reason,
- The maximum number of resin tablets 2 that can be supplied in one loading operation is three. Therefore, in cases such as resin sealing processing where the number of resin tablets 2 required for resin sealing has increased in recent years, it is necessary to supply a maximum of 5 resin tablets 2. may also occur, and in such cases,
The operation of supplying the resin tablet 2 has to be repeated twice. Therefore, it takes a long time to insert the resin tablet 2. As a result, there was a problem in that the preheating treatment of the resin tablets 2 was wasted. [Object of the Invention] The present invention provides a system for smoothly supplying a large number of resin tablets from a stocker to a preheater and a putt within a short period of time. hand,
It is an object of the present invention to provide a mold resin supply device that can improve workability and yield.

[Summary of the invention]

The present invention provides a multi-jointed arm for transporting resin tablets.
This mold resin supply device is provided with a plurality of mold resin molds and can smoothly supply a large number of resin containers from a stocker to a preheater and a pot within a short time, thereby improving workability and yield.

[Embodiments of the invention]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of essential parts of an embodiment of the present invention.

20 in the figure is a stocker that accommodates a large number of resin tablets 21.

The stocker 20 is configured to extrude a predetermined number of resin tapes 21 onto its top. A preheater 22. Mold devices 23 are sequentially arranged. Stocker 20. A guide rail 24 is provided above the preheater 22 and the mold device 23. A multi-joint arm body 25 is mounted on the guide rail 24, and a car 20. It is installed so as to reciprocate above the f repeater 22 and the molding device 23. The multi-joint arm body 25 has three arms 2.
6 protrudes rotatably around the axis. Arm 2
The amount of protrusion of 6 can be changed. Arm 26
At the tip of the joint part 27. A grip part 29 is attached to the inlet/outlet part 28 by sequentially opening the valve. In other words, the grip portion 29 is
By the movement of the joint part 21, it can be bent freely with respect to 'Aj6)Ic, and the amount of protrusion from the tip of the arm 26 can be adjusted by the amount of retraction and retrieval of the inlet/outlet part 28. The gripping portion 29 includes a pair of curved grippers 29*
, z9*, and the resin tablet 21 can be gripped by changing the distance between them. In addition, the grip part 2
It is desirable that the number of arms 26 to which arms 9 and the like are attached is appropriately set according to the capacity of the diversion device 23, etc.

According to the mold resin supply device 30 configured in this manner, first, the cartridge 20 pushes out the number of resin tablets 21 necessary for the resin sealing process, for example, six resin tablets 21, to the top thereof. Next, the multi-joint arm body 25 is positioned on the f-id rail 24 corresponding to the stocker 20.

Next, by moving the arm 26 in and out, the grip part 29 is positioned above the resin tapelet 21 on the tray 20. Next, the grip part 29 is made to face the resin tablet 21 via the joint part 21, and the grip part 29 is guided to the position of the resin tablet 21 by the operation of the inlet/output part 28. After that, the resin tablets 2 are each gripped by the gripping part 29, and then the resin tablets 2 are held in the inlet/outlet part 28. The joint portion 27 is operated in the opposite manner to the above, the grip portion 29 that grips the resin tablet 21 is placed in a predetermined position, and the multi-joint arm body 25 is moved along the guide rail 24, and! Position it at a position corresponding to the repeater 22.

Next, as described above, the arm 26 moves in and out, and the joint 21
The resin tablet 21 is placed on the rotating electrode 31 of the preheater 22 by appropriately performing the bending operation and the in/out operation of the inlet/outlet portion 28, and the gripping portion 29 releases the resin tablet 21.

Next, after preheating the resin tablet 21 with the preheater 22, it is gripped with the grip part 29, and the resin tablet 21 is held with the grip part 29. Joint part 2
1. The arms 26 are each driven and guided above the input port 32 of the molding device 23. After that, the arm 26 is
At the same time, the resin tablet 21 is positioned above the four pots 33 by moving in and out and rotating the pot 33.
The resin tablet 21 is put into the container from the first arm 26. Next, the multi-joint arm main body 25 is moved in parallel along the guide rail 24, and the resin tablet 21 held by the second arm 26 is similarly thrown into the pot 33. Thereafter, the charging of the resin tablet 2 held by the third arm 26 into the I seat 33 is completed in the same manner.

In this way, according to this mold resin supply device 30, the multi-joint arm main body 25 is moved along the guide rail 24 to the stocker 20. Since the preheater 22 can freely reciprocate between the molding device 23, the space in the input port 32 of the molding device 23 is sufficiently wide, and a large number of resin tablets □21 can be smoothly inserted into the pot 33 within a short time. can be put into. As a result, work efficiency can be significantly improved, and the resin tablet 2 inserted into the 4-tub 33 can be
The resin tablets 21 can be added accurately within a predetermined working time so that the properties of the resin tablets 1 are always constant, thereby improving the yield.

〔Effect of the invention〕

As explained above, according to the mold resin supply device according to the present invention, a large number of resin tablets can be smoothly supplied from the stocker to the preheater and the pot within a short time.
This makes it possible to improve workability and yield.

[Brief explanation of drawings]

FIG. 1 is a perspective view of essential parts of an embodiment of the present invention. FIG.
An explanatory diagram of a conventional device for manually transporting resin tablets; FIG. 3 is a cross-sectional view of a molding device that constitutes the device;
FIG. 4 is an explanatory diagram of a conventional device for transporting resin tablets by mechanical operation, and FIG. 5 is an explanatory diagram of a feeder used in the same device. 20...stocker, 2no...resin tablet, 2
2... Preheater, 23... Mold device, 24...
... Guide rail, 25 ... Multi-jointed arm body, 26
...Arm, 27...Joint part, 28...Ingress/exit part,
29... Gripping part, 30... Mold resin supply device,
31... Rotating electrode, 32... Inlet, 33... Pot. Applicant's agent Patent attorney Takehiko Suzue Figure 4

Claims (1)

[Claims] a stocker containing a large number of resin tablets; a preheater and a molding device adjacent to the stocker at a predetermined interval; a guide rail provided above the molding device, the preheater, and the stocker;
A multi-joint arm body is attached to the guide rail so as to reciprocate above the stocker, the preheater, and the molding device; multiple arms,
A mold resin supply device comprising: a gripping portion bendably attached to each arm via a joint portion.