KR20170030428A - Press machine, press method, compression molding apparatus and compression molding method - Google Patents

Abstract

A press machine comprises: an upper frame; a lower frame; an upper fixing plate; a lower fixing plate; a middle plate provided to be movable in the upward and downward directions relative to the upper fixing plate and the lower fixing plate; a slide plate provided to be movable in the upward and downward directions relative to the upper fixing plate and the lower fixing plate; a delivery mechanism provided below the slide plate to deliver the closing force of a closing mechanism to the slide plate; a first elastic mechanism provided between a first upper mold and a first lower mold of the upper frame; and a second elastic mechanism provided between a second upper mold and a second lower mold of the lower frame. While the first elastic mechanism forms a gap between the first upper mold the first lower mold of the upper frame, and the second elastic mechanism also forms a gap between the second upper mold and the second lower mold of the lower frame, the first elastic mechanism and the second elastic mechanism are compressed simultaneously by the closing force of the closing mechanism to thereby close the upper frame and the lower frame simultaneously.

Description

TECHNICAL FIELD [0001] The present invention relates to a press mechanism, a pressing method, a compression molding apparatus, and a compression molding method.

The present invention relates to a press mechanism, a pressing method, a compression molding apparatus, and a compression molding method.

BACKGROUND ART [0002] A compression molding apparatus for compression-molding a semiconductor chip or the like with a resin material is known in the art. 11 and 12 are front views showing an opening state and a closing state of the mold mechanism unit 1000 included in the conventional compression molding apparatus.

As shown in Figs. 11 and 12, the mold mechanism unit 1000 includes two molds 110 and 120 stacked and arranged in the vertical direction. The forming frame 110 includes a top mold 110A and a bottom mold 110B and the forming mold 120 includes a top mold 20A and a bottom mold 20B.

The mold mechanism unit 1000 includes an upper fixing unit 130 for fixing the upper mold 110A of the forming mold 110 and a lower mold 110B of the molding mold 110 and a top mold 20A of the molding mold 120 A slide plate 150 for fixing the lower mold 20B of the mold frame 120, a lower fixing plate 160 provided below the slide plate 150, a slide plate 150 A toggle link mechanism 170 and a ball screw 180 for transmitting a closing force to the intermediate plate 140 and a rack and pinion gear 190 for connecting the intermediate plate 140 and the slide plate 150. [

The intermediate plate 140 and the slide plate 150 are vertically movable with respect to the upper fixing plate 130 and the lower fixing plate 160. The intermediate plate 140 and the slide plate 150 are driven in the vertical direction by a servo motor (not shown) through the ball screw 180 and the toggle link mechanism 170. Thereby, the opening state (Fig. 11) and the closing state (Fig. 12) of the forming molds 110 and 120 are switched.

With the thinning and downsizing of devices, thinning and high precision of molded products are required. In the conventional press structure, it is difficult to maintain the parallelism of the intermediate plate 140, which is the movable platen, and the slide plate 150 with high accuracy. For example, even if the intermediate plate 140 and the slide plate 150 are inclined, the force for correcting the inclination can not be generated, and the inclination is transferred to the molded product.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a press and press method capable of performing high-precision press without performing a high- And to provide a method.

A press mechanism according to the present invention is a press mechanism comprising an upper mold having a first upper mold and a first lower mold, a lower mold laminated below the upper mold and having a second upper mold and a second lower mold, A lower fixing plate provided below the upper fixing plate and a lower fixing plate provided between the first lower mold of the upper mold and the second upper mold of the lower mold so as to fix the first upper mold and the second upper mold, And an upper plate fixed to the lower fixing plate, wherein the upper plate and the lower fixing plate are movable in a vertical direction with respect to the upper fixing plate and the lower fixing plate, A closing mechanism for applying a closing force to the upper frame and the lower frame; A first elastic mechanism provided between the first upper mold and the first lower mold of the upper mold, and a second elastic mechanism provided between the lower mold and the lower mold, And a second elastic mechanism provided between the second upper die and the second lower die.

The second elastic mechanism transmits a closing force of the closing mechanism to the intermediate plate in a state in which a predetermined gap is formed between the second upper mold and the second lower mold of the lower mold, Wherein the first elastic mechanism forms a predetermined gap between the first upper mold and the first lower mold of the upper mold, and the second elastic mechanism The first elastic mechanism and the second elastic mechanism are simultaneously compressed by the closing force of the closing mechanism from a state in which a predetermined gap is formed between the second upper mold and the second lower mold of the lower frame , The upper frame and the lower frame are simultaneously closed.

In one embodiment, the pressing mechanism further includes a lower floating mechanism provided between the slide plate and the second lower die of the lower die, for correcting the inclination of the second lower die with respect to the slide plate do.

In one embodiment, the press mechanism further includes a top floating mechanism provided between the intermediate plate and the first lower die of the upper die, for correcting the inclination of the first lower die with respect to the intermediate plate do.

A compression molding apparatus according to the present invention includes a molding unit for compression-molding an insert member with a resin material, and the molding unit includes the above-described press mechanism.

In one embodiment, the compression molding apparatus includes a plurality of the molding units detachably attached to each other.

A press method according to the present invention is a press method comprising a lower mold having a first upper mold and a first lower mold, a lower mold having a second upper mold and a second lower mold stacked below the upper mold, An intermediate plate provided so as to be fixed between the first lower die of the upper die and the second upper die of the lower die, and an upper plate fixed to the upper plate, A first elastic mechanism provided between the first upper mold and the first lower mold of the upper mold and a second elastic mechanism provided between the second upper mold and the second lower mold of the lower mold, And a second elastic mechanism provided between the upper die and the second lower die.

The pressing method includes a step of transmitting a closing force to the slide plate, a step of forming a gap between the second upper mold and the second lower mold of the lower mold with a predetermined gap formed by the second elastic mechanism, Transferring the closing force transmitted to the slide plate to the intermediate plate through the second elastic mechanism and moving the intermediate plate in a direction from the lower fixing plate to the upper fixing plate; Wherein a predetermined gap is formed between the first upper mold and the first lower mold by the first elastic mechanism and between the second upper mold and the second lower mold of the lower mold, The first elastic mechanism and the second elastic mechanism are simultaneously compressed from a state in which a predetermined gap is formed by the first elastic mechanism and the second elastic mechanism, Is equipped with a process.

In one embodiment, in the pressing method, the inclination of the second lower die with respect to the slide plate is corrected by the lower floating mechanism provided between the slide plate and the second lower die of the lower die.

In one embodiment, in the pressing method, the inclination of the first lower die with respect to the intermediate plate is corrected by an upper floating mechanism provided between the intermediate plate and the first lower die of the upper die.

The compression molding method according to the present invention includes a step of preparing an insert member and a resin material, and a step of compression-molding the insert member with the resin material by the above-described pressing method.

These and other objects, features, aspects and advantages of the present invention will become apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings.

1 is a plan view showing an overall configuration of a compression molding apparatus according to one embodiment of the present invention.
Fig. 2 is a view showing a state in which a molding unit in the compression molding apparatus shown in Fig. 1 is added. Fig.
3 is a view showing a first step of a compression molding method using a compression molding apparatus according to one embodiment of the present invention.
4 is a view showing a second step of a compression molding method using a compression molding apparatus according to one embodiment of the present invention.
5 is a view showing a third step of a compression molding method using a compression molding apparatus according to one embodiment of the present invention.
6 is a view showing a fourth step of a compression molding method using a compression molding apparatus according to one embodiment of the present invention.
7A to 8B are diagrams showing examples of the structure of an elastic mechanism provided between an upper mold and a lower mold;
9A to 9C are diagrams showing examples of the structure of a floating mechanism provided between a lower die and a slide plate or an intermediate plate.
10 is a view showing an example of the structure of a mold.
11 is a front view of a press mechanism (opening state) included in a conventional compression molding apparatus.
12 is a front view of a press mechanism (closed state) included in a conventional compression molding apparatus.

Hereinafter, embodiments of the present invention will be described. In addition, the same or equivalent portions are denoted by the same reference numerals, and the description thereof may not be repeated.

In addition, in the embodiments described below, the scope of the present invention is not necessarily limited to the number, quantity, and the like, except for the case where there is a substrate in particular. In the following embodiments, each component is not necessarily essential to the present invention except for the case where there is a substrate in particular.

1 is a plan view showing an overall configuration of a compression molding apparatus according to the present embodiment. As shown in Fig. 1, the compression molding apparatus according to the present embodiment includes a mold mechanism portion 100 for compressing (resin sealing molding) a substrate (insert member) on which a semiconductor chip is mounted with a resin material An inhaler unit B including an inhaler 200 for supplying an insert member to a forming mold of the molding unit A and an inhaler unit B for supplying the molded product from the forming mold of the molding unit A, And an out-loader unit (C) including an out-loader (300) for taking out and a containing portion containing the molded product. The in-loader 200 and the out-loader 300 move in the vertical direction in Fig.

The molding unit A, the in-loader unit B and the out-loader unit C are detachably connected to each other through a connecting mechanism such as a bolt or a pin. In the example of Fig. 1, two molding units A are provided, but this number can be adjusted in accordance with the production amount. The number of the molding units A may be one or four, for example, as shown in Fig.

1 and 2, the molding unit A, the in-loader unit B and the out-loader unit C are provided in this order. However, for example, the molding unit A, One main unit in which the unit B and the out-loader unit C are integrated and one or a plurality of subunits having only the molding unit A are arranged to constitute a compression molding apparatus .

In addition, in the examples shown in Figs. 1 and 2, the insert member and the resin material may be manually supplied to the molding unit A, and the molded article after molding may be taken out.

Figs. 3 to 6 are diagrams showing respective steps in the compression molding method using the compression molding apparatus according to the present embodiment. Fig.

As shown in Figs. 3 to 6, the mold mechanism portion 100 included in the compression molding apparatus according to the present embodiment includes two molding molds 11 and 12 stacked and arranged in the vertical direction. The forming mold 11 includes a top mold 11A and a bottom mold 11B and the forming mold 12 includes a top mold 12A and a bottom mold 12B.

The mold mechanism unit 100 includes an upper fixing plate 13 for fixing the upper mold 11A of the forming mold 11 and a lower mold 11B of the molding mold 11 and a top mold 12A of the molding mold 12 A slide plate 15 for fixing the lower mold 12B of the mold frame 12, a lower fixing plate 16 provided below the slide plate 15, a slide plate 15 A toggle link mechanism 17 for transmitting a closing force to the ball screw 18 and a ball screw 18.

Elastic mechanisms 21 and 22 are provided between the upper die 11A and the lower die 11B of the forming die 11 and between the upper die 12A and the lower die 12B of the forming die 12 . A floating mechanism 30 is provided between the slide plate 15 and the lower die 12B of the forming die 12.

The intermediate plate 14 and the slide plate 15 are connected to the holding frame 19 provided in the vertical direction between the upper fixing plate 13 and the lower fixing plate 16 through an LM guide And is movable in the vertical direction. The intermediate plate 14 and the slide plate 15 are driven in the vertical direction by a servo motor (not shown) through the ball screw 18 and the toggle link mechanism 17. Thereby, the states shown in Figs. 3 to 6 are switched. More specifically, it is as follows.

First, the power of a servo motor (not shown) is transmitted to the slide plate 15 via the ball screw 18 and the toggle link mechanism 17. [ 3, the slide plate 15, the floating mechanism 30, and the lower mold 12B are lifted and the upper die 12A of the forming die 12 is lifted up as shown in Fig. And the lower mold half 12B sandwich the elastic mechanism 22.

The upper die 12A and the lower die 12B of the forming die 12 are held at a predetermined distance by the elastic mechanism 22 and the intermediate plate 14 and the lower die 11B The upper mold 11A and the lower mold 11B of the molding die 11 sandwich the elastic mechanism 21 as shown in Fig. That is, the elastic mechanism 22 can elevate the intermediate plate 14 while forming a predetermined gap between the upper die 12A and the lower die 12B of the forming die 12. The floating mechanism 30 provided between the slide plate 15 and the lower die 12B of the forming die 12 is configured so that when the lower die 12B is inclined with respect to the slide plate 15, And corrects the inclination of the lower mold 12B so that the lower mold 12B is parallel.

When more power is applied from the state of Fig. 5, the elastic mechanisms 21 and 22 are compressed as shown in Fig. 6, and the molds 11 and 12 are simultaneously closed and resin sealing is performed. Thereafter, after a certain curing time has elapsed, the molds 11 and 12 are opened by the opposite motion to the above-described operation.

The mold mechanism portion 100 according to the present embodiment is provided with the elastic mechanisms 21 and 22 and the floating mechanism 30 so that the intermediate plate 14 and the slide plate 15 can be maintained. As a result, the resin can be closed and sealed while maintaining a high degree of parallelism, so that a high-precision resin thickness can be realized. That is, deviation of the resin thickness of the molded article can be reduced without inclining the intermediate plate 14 during the closing process. In addition, compared with the conventional press structure, the intermediate plate 14 and the slide plate 15 are not required to be assembled with high precision, resulting in a reduction in the number of assembling steps.

Figs. 7A to 8B show structural examples of the elastic mechanism 21. Fig. As shown in Figs. 7A and 7B, the elastic mechanism 21 may be constituted by a coil spring 21A. As shown in Figs. 8A and 8B, the elastic mechanism 21 includes a coil spring 21A, And a pin 21B may be provided on the base 21A. 7A and 8A, the coil springs 21A and the coil spring 21A and the fins 21B may be provided concentrically all over the forming die 11B. Alternatively, as shown in Figs. 7B and 8B As shown in Fig. 4A, the portion located on the inner circumferential side and the portion located on the outer circumferential side may be provided. The elastic mechanism 21 preferably has a stroke amount of about 5 mm to 10 mm from the temporary closing state (Fig. 5) to the closing state (Fig. 6). The same applies to the elastic mechanism 22 as described above.

Figs. 9A to 9C show structural examples of the floating mechanism 30. Fig. 9A is a side view of the floating mechanism 30, FIG. 9B is a plan view of the same mechanism, and FIG. 9C is an enlarged cross-sectional view of the portion "A" in FIG. 9A. 9A to 9C, the floating mechanism 30 includes the block 31, the oil passage 32, the piston cap 33, the piston 34, and the oil inlet 35 do. A fluid such as silicone oil is supplied to the flow path 32 formed in the block 31 from the oil injection port 35, for example. The piston 34 is engaged with the piston cap 33 attached to the block 31. [ The piston 34 is urged upward by the pressure of the fluid supplied to the flow path 32. The piston (34) is arranged in a matrix on the block (31). The fluid supplied to the flow path 32 functions to equalize the pressure of the fluid in all the flow paths 32 (equal pressure). Thus, the floating mechanism 30 corrects the mold surface of the lower mold 12B so as to be parallel to the mold surface of the upper mold 12A (see FIG. 5) even when the slide plate 15 is inclined.

Fig. 10 shows an example of the structure of the molding die 11. 10, a release film 40 and a granular resin 50 are provided between the upper die 11A and the lower die 11B of the forming die 11. The upper die 11A has a clamper 11A1 for holding the substrate 60 and a film push 11A2. The same is true for the molding die 12 as described above.

Although the elastic mechanisms 21 and 22 are provided on the lower molds 11B and 12B in the present embodiment, the elastic mechanisms 21 and 22 may be provided on the upper molds 11A and 12A . Further, the floating mechanism 30 may be omitted or may be provided on both sides of the molds 11 and 12.

Further, the scope of the present invention is not limited to the hold frame 19, but may be a pressing mechanism provided with columnar tie bars in four chambers. The power transmission system is not limited to the toggle link mechanism 17, and may be a direct-drive type (linear type) by a motor or hydraulic pressure.

Although the mold mechanism portion 100 for compressing and molding the insert member with the resin material has been described in the present embodiment, the scope of the present invention is not limited to the resin seal, and a pair of There is a possibility that the present invention may be applied to an apparatus for inserting a molded article into a mold, a transfer molding apparatus, and an injection molding apparatus. Further, there is a possibility that the present invention may also be used in a hot press apparatus (hot press apparatus) used in producing a laminated board to be a material of a printed circuit board.

While the embodiments of the present invention have been described, it should be understood that the embodiments disclosed herein are illustrative and non-restrictive in all respects. It is intended that the scope of the invention be indicated by the appended claims and that all changes which come within the meaning and range of equivalency of the claims are intended to be embraced therein.

11, 12, 110, 120: forming molds 11A, 12A, 110A, 120A:
11A1: clamper 11A2: film pusher
11B, 12B, 110B, 120B: Lower mold 13, 130:
14, 140: intermediate plate 15, 150: slide plate
16, 160: lower fixing plate 17, 170: toggle link mechanism
18, 180: Ball Screw 19: Hold Frame
21, 22: elastic mechanism 21A: coil spring
30: Floating mechanism 31: Block
32: flow path 33: piston cap
34: piston 35: oil inlet
40: release film 50: granule resin
60: substrate 100, 1000: mold mechanism
190: Rack and pinion gear 200: In loader
300: Out loader A: Molding unit
B: in-loader unit C: out-loader unit

Claims (9)

An upper mold having a first upper mold and a first lower mold,
A lower frame arranged in a stacked manner below the upper frame and having a second upper mold and a second lower mold,
An upper fixing plate for fixing the first upper mold of the upper mold,
A lower fixing plate provided below the upper fixing plate,
Wherein the first upper mold and the second upper mold of the lower mold are fixed between the first lower mold of the upper mold and the second upper mold of the lower mold, An intermediate plate,
A slide plate provided so as to fix the second lower die of the lower frame and movable in the vertical direction with respect to the upper fixed plate and the lower fixed plate,
A closing mechanism for applying a closing force to the upper frame and the lower frame,
A transmission mechanism provided below the slide plate for transmitting a closing force of the closing mechanism to the slide plate,
A first elastic mechanism provided between the first upper mold and the first lower mold of the upper mold,
And a second elastic mechanism provided between the second upper die and the second lower die of the lower die,
The second elastic mechanism transmits a closing force of the closing mechanism to the intermediate plate in a state in which a predetermined gap is formed between the second upper mold and the second lower mold of the lower mold, Can be moved toward the upper fixing plate,
The first elastic mechanism forms a predetermined gap between the first upper mold and the first lower mold of the upper mold, and the second elastic mechanism forms a predetermined gap between the second upper mold and the second mold of the lower mold, The first elastic mechanism and the second elastic mechanism are simultaneously compressed by the closing force of the closing mechanism from a state in which a predetermined gap is formed between the upper mold and the lower mold to close the upper mold and the lower mold simultaneously Characterized by a press mechanism. The method according to claim 1,
And a lower floating mechanism provided between the slide plate and the second lower die of the lower die for correcting the inclination of the second lower die with respect to the slide plate. 3. The method according to claim 1 or 2,
And a top floating mechanism provided between the intermediate plate and the first lower die of the upper die for correcting the inclination of the first lower die with respect to the intermediate plate. And a molding unit for compression-molding the insert member with a resin material,
The molding apparatus according to any one of claims 1 to 3, wherein the molding unit comprises the press mechanism according to any one of claims 1 to 3. 5. The method of claim 4,
And a plurality of said molding units detachably attached to each other. An upper mold having a first upper mold and a first lower mold,
A lower frame arranged in a stacked manner below the upper frame and having a second upper mold and a second lower mold,
An upper fixing plate for fixing the first upper mold of the upper mold,
A lower fixing plate provided below the upper fixing plate,
An intermediate plate provided between the first lower mold of the upper mold and the second upper mold of the lower mold so as to fix the first and second upper molds,
A slide plate provided in a state where the second lower die of the lower die is fixed,
A first elastic mechanism provided between the first upper mold and the first lower mold of the upper mold,
And a second elastic mechanism provided between the second upper die of the lower die and the second lower die, the pressing method comprising:
Transmitting a closing force to the slide plate;
Wherein a closing force transmitted to the slide plate is transmitted through the second elastic mechanism between the second upper mold and the second lower mold of the lower frame in a state in which a predetermined gap is formed by the second elastic mechanism, Transferring the intermediate plate to the intermediate plate, and moving the intermediate plate in the direction from the lower stationary half to the upper stationary half;
Wherein a predetermined gap is formed between the first upper mold and the first lower mold by the first elastic mechanism and between the second upper mold and the second lower mold of the lower mold, And simultaneously closing the upper frame and the lower frame simultaneously by compressing the first elastic mechanism and the second elastic mechanism simultaneously from a state in which the predetermined gap is formed by the second elastic mechanism Lt; / RTI > In claim 6,
Wherein the inclination of the second lower die with respect to the slide plate is corrected by a lower floating mechanism provided between the slide plate and the second lower die of the lower die. 8. The method according to claim 6 or 7,
And corrects the inclination of the first lower die with respect to the intermediate plate by an upper floating mechanism provided between the intermediate plate and the first lower die of the upper die. Preparing an insert member and a resin material;
A compression molding method comprising the step of compression-molding the insert member with the resin material by the pressing method according to claim 6 or 7.

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