KR100756239B1 - Eject pin separated type molding press - Google Patents

Abstract

A molding press with a separable eject pin is provided to permit a mold to be easily repaired by making it easier to replace the eject pin. A molding press with a separable eject pin includes a chase mold(10) and a base mold(20). The chase mold has a top surface on which a molding frame(11) is formed, and an inner space(A) in which a movable board(12) is formed such that the movable board is movable in a vertical direction. An eject pin(13) is mounted on the movable board in the direction of the molding frame. The base mold is attachable/detachable to/from the chase mold. A chase elastic spring(14) is arranged inside the chase mold such that the restoring force of the spring acts in the direction where the eject pin is ejected from the molding frame.

Description

Eject pin separated type molding press

1 is a cross-sectional view showing an eject pin recessed state of an eject pin separating type molding press according to an exemplary embodiment of the present invention.

FIG. 2 is a cross-sectional view illustrating an eject pin protruding state of the eject pin separating type molding press of FIG. 1. FIG.

Figure 3 is a cross-sectional view showing an eject pin separate type molding press according to another embodiment of the present invention.

Figure 4 is a cross-sectional view showing an eject pin separate type molding press according to another embodiment of the present invention.

(Description of Major Symbols in the Drawing)

1: Molding 10: Chase Mold

11: mold 12: movable table

13: Eject Pin 14: Chase Elastic Spring

A: raising and lowering space 20: base mold

21: Eject Rod 22: Platform

23: cylinder 24: base elastic spring

101: top chase mold 102: bottom chase mold

201: upper base mold 202: lower base mold

The present invention relates to a separate eject pin forming press, and more particularly, to an eject pin separate forming press to facilitate the replacement of the chase mold by making the eject pin in a separate form.

In general, a process of molding a molding object, such as a semiconductor device package, into a molded article of a desired shape is called a molding process. The molding process heats an epoxy molding compound (EMC), which is a thermosetting resin in a solid form, at high temperature. It is transformed into a molten state and molded at high temperature and high pressure in a mold of a desired shape.

Conventional molding presses that perform such a molding process are usually used for fixing the mold to the base mold with a fastener such as a screw or bolt, and once used, until the life of the mold is reached without disassembly. In the case of installing the upper plate and the lower plate of the initial mold frame in the base mold, the worker carried out the attachment work to hold the heavy mold frame by hand and to combine the fixtures. A stripping operation was performed to hold the mold and dismantle the fixture.

In particular, the eject pin installed in the conventional molding press is recessed in the mold during molding so that the processed molding can be removed from the mold, and then, when the molding is finished, the eject pin protrudes from the mold to lift the molding. In the conventional eject pin, a single eject pin penetrates a long distance from the base mold to the inside of the mold frame, and because of this configuration, it is difficult to separate and manufacture the eject pin, which is also cumbersome and difficult. There was an issue.

In addition, when the mold mold is detached to the ejected pin formed by a long time, a heavy weight mold is fixed by the worker by hand, and the work of dropping the mold mold frequently is difficult because it is difficult to assemble it to the correct position. There was a problem that the attachment position of the frame was not precise.

In addition, in the conventional molding press, if the entire mold is custom made once due to the structure of the eject pin, it is impossible to mold a molded product having a different shape, so that only a single product can be produced, and the production period, manufacturing cost, and manpower are large. There was a problem.

In addition, in the conventional molding press, the eject pins are difficult and difficult to replace or replace, and thus, when the mold is repaired or the mold is damaged, all the molds need to be replaced, and the mold mold and the eject pins installed once are various other devices. There was a problem that the versatility and utility of the mold is greatly reduced because it can not be utilized.

An object of the present invention for solving the above problems is to make the eject pin in a detachable type, easy detachment work of the chase mold and the base mold, to prevent the accident of falling of the mold frame during the detachment work, the attachment position of the mold frame The present invention provides a separate eject pin for forming a press that can be fixed very precisely.

In addition, another object of the present invention is to produce a multi-piece molded article having a different shape with a small number of chase molds with an eject pin, and to produce a multi-piece production if only a plurality of chase molds are required to manufacture the mold required The present invention provides a separate eject pin forming press that can significantly reduce the time, manufacturing cost and manpower.

In addition, another object of the present invention is easy to replace or replace the eject pin to facilitate mold repair or repair in the case of mold breakage, and the ejection pin embedded chase mold can be utilized in various other devices, The present invention provides a separate eject pin for molding presses that can greatly improve the versatility and utility of the mold.

Eject pin separation molding press of the present invention for achieving the above object, in forming a molding press for molding a thermosetting resin in the molding space of the mold mold, the mold mold is formed on the upper surface, the lifting space inside the lifting A chase mold capable of descending, wherein an eject pin is installed in the mold frame in a direction of the mold frame; And a base mold detachably formed with the chase mold.

In addition, according to the present invention, the eject pin separation type molding press, it is preferable that the chase elastic spring that the restoring force acts in the direction in which the eject pin is recessed from the mold frame in the lifting space of the chase mold.

In addition, according to the present invention, the base mold, the eject rod for pressing the movable table; A lift table connecting the eject rods to each other; And a cylinder for elevating the elevating platform.

Further, according to the present invention, it is preferable that a base elastic spring having a restoring force acting in the direction in which the eject rod is recessed is installed in the base mold.

On the other hand, according to the present invention, the chase mold, the upper chase mold and the lower chase mold in contact with each other, the base mold is composed of the upper plate base mold and lower plate base mold for detachably supporting the upper plate chase mold. It is preferable.

Hereinafter, the eject pin separating type molding press according to various embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, as shown in Figure 1, the eject pin separate type molding press according to a preferred embodiment of the present invention, a molding press for molding the thermosetting resin into the molding 1 in the molding space of the mold frame 11, It is a structure largely comprised of the chase mold 10 and the base mold 20. FIG.

Here, the chase mold 10, the mold frame 11 is formed on the upper surface, a movable table 12 that can be raised and lowered in the elevating space (A) therein is formed, the movable table 12 As the eject pin 13 is installed in the mold frame 11 direction, as shown in FIGS. 3 and 4, it is preferable that the upper pin chase mold 101 and the lower plate chase mold 102 are in contact with each other. .

In addition, the chase elastic spring 14 may be installed in the lifting space (A) of the chase mold 10, the restoring force acts in the direction in which the eject pin 13 is recessed from the mold frame (11).

On the other hand, the base mold 20 is formed to be detachable from the chase mold 10, the eject rod 21 for pressing the movable table 12 and the eject rod 21 is connected to each other Base elasticity is installed in the lifting platform 22, the cylinder 23 for raising and lowering the lifting platform 22 and the base mold 20, and the restoring force acts in the direction in which the eject rod 21 is recessed. It is the structure comprised including the spring 24.

In addition, as shown in FIGS. 3 and 4, the base mold 20 attaches and detaches the upper plate base mold 201 and the lower plate chase mold 102 to detachably support the upper plate chase mold 101. It is preferable that it consists of the lower board base metal mold | die 202 supported as much as possible.

Therefore, referring to the operation of the eject pin separation type molding press of the present invention, as shown in Figure 1, the base elastic spring 24 and the chase elastic spring in the state that the cylinder 23 is not operated When the eject pin 13 is recessed into the mold frame 11 by the restoring force of the 14, and as shown in FIG. 2, when the cylinder 23 rises, the lifting platform ( 22, the eject rod 21 presses the movable table 12 while the movable table 12 is raised, and the eject pin 13 protrudes toward the mold frame 11 while the movable table 12 is raised. You will be able to lift.

Therefore, the eject pin separation type molding press of the present invention does not need to disassemble the eject pin when separating the chase mold 10 from the base mold 20, and thus the chase mold 10 and the It is possible to freely detach the base mold 20.

On the other hand, although not shown, the fixing means of the chase mold 10 and the base mold 20, using a fastener such as a screw or bolt, or as shown in Figure 4, the groove formed in the base mold 20 ( The chase mold 10 is fitted to the 201 ') 202' in a sliding manner.

The present invention is not limited to the above-described embodiments, and of course, modifications may be made by those skilled in the art without departing from the spirit of the present invention.

That is, the shape of the chase mold and the base mold of the present invention, the number of installation of the eject pin, the arrangement position, the type of the fixing means, etc. are not limited to the drawings and are engaged in the relevant field without departing from the technical idea of the present invention. Those skilled in the art can be easily changed and modified.

Therefore, the scope of the claims in the present invention will not be defined within the scope of the detailed description, but will be defined by the following claims and the technical spirit thereof.

As described above, according to the eject pin separation type molding press of the present invention, the eject pin is manufactured in a separate type to facilitate the detachment work of the chase mold and the base mold, to prevent the accident of falling of the mold frame during the detachment work, and to attach the mold frame. It is possible to fix the position very precisely, and to produce a small quantity of multi-type moldings with different shapes by using a plurality of chase molds with eject pins. And it can be used in a variety of other devices chase molds with embedded eject pins, it has the effect that can greatly improve the versatility and utility of the mold.

Claims (5)

In constructing a molding press for molding a thermosetting resin into the molding 1 in the molding space of the mold mold 11, A mold frame 11 is formed on an upper surface thereof, and a movable platform 12 capable of lifting up and down is formed in the elevating space A. An eject pin 13 is formed on the movable platform 12 to form the mold frame ( 11) the chase mold 10 installed in the direction; And A base mold 20 detachably formed with the chase mold 10; Eject pin separated molding press comprising a. The method of claim 1, Eject is characterized in that the chase elastic spring 14 is installed in the lifting space (A) of the chase mold 10, the restoring force acts in the direction in which the eject pin 13 is recessed from the mold die (11) Separate pin forming press. The method of claim 1, The base mold 20, An eject rod 21 for pressing the movable table 12; Lifting platform (22) for connecting the eject rod (21) to each other; And A cylinder 23 for elevating the elevating platform 22; Eject pin separated molding press comprising a. The method of claim 3, wherein Eject pin separation molding press, characterized in that the base elastic spring 24 is installed in the base mold 20, the restoring force acts in the direction in which the eject rod 21 is recessed. The method of claim 1,  The chase mold 10 is composed of a top plate chase mold 101 and a bottom plate chase mold 102 in contact with each other, The base mold 20 includes an upper plate base mold 201 for detachably supporting the upper plate chase mold 101 and a lower plate base mold 202 for detachably supporting the lower plate chase mold 102. Eject pin separate forming press.

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