JPH09286027A - Resin mold fitted with slide core driving mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small-sized resin mold fitted with a slide core driving mechanism capable of reducing the number of actuators and equipment cost. SOLUTION: One end of the first link member 8 driven by an actuator 6 and fixed to a fixing member 20 is connected to the first slide core 3 made accessible to upper and lower mold cavities 1, 5 and the other end thereof is connected to one end of a third link member 15 by a connection pin 18 and the other end of the third link member 15 is connected to one end of the second link member made freely revolvable by a drive pin 12 and a fulcrum pin 11 and the other end of the second link member is connected to a guide hole 17 by the drive pin 13 provided to one end of the second slide core 14 made accessible to upper and lower mold cavities 1a, 5a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin molding die with a slide core driving mechanism for various molded products using a resin material or the like.

[0002]

2. Description of the Related Art In a conventional resin molding die with a slide core, two slide cores are used, and when the directions in and out of the die are opposite to each other, that is, 180 degrees, each of them is different. It has a configuration in which two actuators that are driven in the same direction are arranged.

[0003]

However, in the resin molding die with the slide core having the above-mentioned conventional configuration, two actuators are required to drive the two slide cores in different directions. The size of the resin mold must be increased because the installation space for the resin must be secured in the resin mold, and as a result the size of the injection molding machine that uses the resin mold must be increased. Was.

The present invention is intended to solve such a conventional problem, and a slide core drive capable of driving two slide cores in different directions by one actuator, and being compact and capable of reducing equipment cost. An object of the present invention is to provide a resin molding die with a mechanism.

[0005]

In order to solve the above-mentioned problems, a resin molding die with a slide core driving mechanism of the present invention comprises an upper die and a lower die each having two cavity portions of hollow portions, and a part thereof. , Two slide cores that move in and out of each cavity are fixedly or rotatably connected to the swingable lever and actuator driving end by two rod rods and fulcrum pins, and the slide core is driven by the actuator. Are configured to move in opposite directions.

With the above configuration and operation, it is possible to reduce the number of actuators, reduce the size, and reduce the equipment cost.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention is a product having a desired shape in the vicinity of both ends of each of the above-mentioned parting surfaces of a pair of dies that are openably and closably assembled with their parting surfaces facing each other. And a first and second slide cores slidably fitted into the cavity parts provided in the mold parts from the outside, respectively. A first link member, one end of which is connected to the first slide core and an external power generation mechanism is connected to a substantially middle portion, and a first point of which is connected to the second slide core and a fulcrum pin is provided at the substantially middle portion. A second link provided and arranged in parallel with the first link member
Link member and a third link member connecting the other ends of the first and second link members, respectively, and through the first to third link members due to the reciprocating motion of the external power generation mechanism. The first slide core and the second slide core are configured so as to slide in mutually opposite directions, which has the effect of reducing the number of actuators and downsizing the equipment and devices.

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a conceptual plan view showing a configuration of a main part of a resin molding die with a slide core drive mechanism in the same embodiment, and FIG. 2 is a partial sectional view taken along the arrow A in FIG.

In FIG. 1 and FIG. 2, reference numeral 2 denotes an upper mold having hollow upper mold cavities 1 and 1a provided at the bottom thereof, which is joined to the lower surface of an upper mold holder 21. Reference numeral 4 denotes a lower mold having lower mold cavities 5 and 5a provided on the upper part thereof, which is joined to the upper surface of the lower mold holder 22 and is arranged so as to face the upper mold 2 and has a parting line 7. It can be opened and closed in the direction of arrow B with reference.

Reference numeral 3 is a first slide core, which slides inside the upper mold 2 and the lower mold 4 along a parting line 7 and is partially formed by the upper mold cavity 1 and the lower mold cavity 5. The space for injecting resin, that is, the forming portion of one of the two molded products is put in and out.

One end of the first slide core 3 is fixedly or rotatably connected to one end of the first link member 8 by a connecting pin 19. Further, at the central portion of the first link member 8, a tip drive portion of an actuator 6 serving as an external power generation mechanism fixed to a main body frame 9 by a motor drive using an air or oil cylinder, a solenoid or a cam mechanism is fixed. They are connected by the body 20, and when the actuator 6 is driven, they move integrally with the fixed body 20.

The other end of the first link member 8 is fixedly or rotatably connected to one end of the third link member 15 by a connecting pin 18. The drive pin 12 is attached to the other end of the third link member 15, and has a long hole shape having a predetermined length and a width substantially the same as the outer diameter of the drive pin 12 provided at one end of the second link member 10. It is fitted into the guide hole 16 and is rotatably and slidably connected.

Reference numeral 11 denotes a fulcrum pin fixed to one end of the main body frame 9, which is attached to substantially the center of the second link member 10, and the second link member 10 rotates about the fulcrum pin 11. To do. At the other end of the second link member 10, a guide hole 17 having the same long hole shape as described above is provided, and the upper die 2 and the lower die 4 are provided along the parting line 7.
The second part that slides in the other part of the second part and that goes in and out of the resin injection part space partly formed by the upper mold cavity 1a and the lower mold cavity 5a, that is, the forming part of the other molded product of the two. Drive pin 13 attached to one end of slide core 14
Are fitted together and are connected so as to be rotatable and slidable.

The first slide core 3 and the second slide core 14 each have a lower mold 4 so that they can move linearly in a predetermined direction.
The guide groove (not shown) regulates and slides.
Then, by the driving operation of the actuator 6, the first slide core 3, the first, third, and second link members 8, 15,
10 and the second slide core 14 are set on substantially the same plane along the parting line 7 so that they can move or rotate accurately and smoothly.

Next, the operation of the first slide core 3 and the second slide core 14 will be described.

First, part of the first slide core 3 and the second slide core 14 is partially removed from the upper mold cavity 1 and the lower mold cavity 5, and then the upper mold cavity 1a and the lower mold cavity 5a.
The actuator 6 is driven to move the fixed body 20 in the direction of the dotted arrow in order to insert the molded body into the forming part of each molded product.

At the same time, a part of the first slide core 3 slides in the direction of the dotted arrow by the first link member 8 to form a molded product forming portion consisting of one upper mold cavity 1 and one lower mold cavity 5. Is inserted. At the same time, the end of the first link member 8 with the connecting pin 18 also moves in the dotted arrow direction, so that the opposite end of the third link member 15 with the drive pin 12 also moves in the dotted arrow direction.

Then, in the second link member 10, the drive pin 12 slides in the guide hole 16 around the fulcrum pin 11 in the direction of the dotted arrow and the second link member 10 is rotated.
Therefore, the guide hole 1 at the other end of the second link member 10
Reference numeral 7 denotes a drive pin 13 that slides and the second link member 10 rotates in the opposite direction to move a part of the second slide core 14 in the direction of a dotted arrow to move the other upper mold cavity. 1a and the lower mold cavity 5a.

Then, a part of the first slide core 3 and the second slide core 14 is extracted from the molding portion of each molded product by driving the fixed body 20 of the actuator 6 in the direction of the solid line arrow opposite to the insertion. As a result of the operation, the molded product is extracted from the forming portion of each molded product by the same operation as that described above but in the direction of the solid arrow in the opposite direction.

As described above, by driving the actuator 6, the first slide core 3 and the second slide core 14 move in and out of the forming parts of the respective molded products in opposite directions.

The positions of the fixed body 20, the connecting pins 18 and 19, the drive pins 12 and 13, and the fulcrum pin 11 are set so that the first slide core 3 and the second slide core 14 move at the same distance and speed. , And the lengths of the first, third, and second link members 8, 15, 10 are set.

Therefore, when it is necessary to change the above-mentioned distance or speed, it can be easily realized by changing all or a part or a part of the above-mentioned.

[0023]

As described above, according to the present invention, the number of actuators can be reduced, the size of the mold can be reduced, and the moving distance can be varied in multiple directions without increasing the size of the mold. The advantageous effect that the slide core can be moved in and out is obtained.

[Brief description of drawings]

FIG. 1 is a conceptual plan view showing a main configuration of a resin molding die with a slide core driving mechanism according to an embodiment of the present invention.

FIG. 2 is a partial cross-sectional view taken along arrow A in FIG.

[Explanation of symbols]

 1 Upper Mold Cavity 2 Upper Mold 3 First Slide Core 4 Lower Mold 5 Lower Mold Cavity 6 Actuator 7 Parting Line 8 First Link Member 9 Body Frame 10 Second Link Member 11 Support Point Pin 12 Drive Pin 13 Drive Pin 14 second slide core 15 third link member 16 guide hole 17 guide hole 18 connecting pin 19 connecting pin 20 fixed body 21 upper die holder 22 lower die holder

Claims (1)

[Claims] 1. A pair of metal molds, which are openably and closably assembled with their parting surfaces facing each other, are provided with cavity parts each having a cavity part for obtaining a product having a desired shape in the vicinity of both ends of each parting surface. And a first and second slide cores slidably fitted into the cavity portion provided in the mold portion from the outside, and one ends of the first and second slide cores are connected to each other and substantially in the middle. A first link member having an external power generation mechanism coupled to its portion, one end of which is connected to the second slide core, and a fulcrum pin provided at a substantially middle portion, and the first link member is disposed in parallel with the first link member. A second link member and a third link member in which the other ends of the first and second link members are connected to each other.
A resin molding die with a slide core drive mechanism, wherein a first slide core and a second slide core slide in mutually opposite directions via a third link member.