JPS598336B2 - Workpiece feeding device in resin molding mold - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for automatically feeding a workpiece into a contact surface receiving groove of a resin molding die.

Conventionally, when remolding a fixed part of a contact spring using resin, for example, a worker would fit the metal plates of the contact spring into grooves formed on one side of the mold that face each other one by one. Normally, supplies rely on human labor.

However, such work is extremely inefficient and the daily production quantity is limited, and the work requires a certain degree of skill. SUMMARY OF THE INVENTION An object of the present invention is to provide a workpiece feeding device for a resin molding mold that can automatically feed the workpiece into a receiving groove each time the resin molding mold moves close to the mold. do.

That is, in the workpiece feeding device according to the present invention, a housing portion capable of accommodating a plurality of workpieces vertically is provided on one upper part of the mold, and a receiving portion for the workpieces is provided at the end of this housing portion. An insert gate is formed that conducts to the groove, and a part of the housing part and the side surface of the insert gate facing the mold are cut out, and a claw that engages with one of the workpieces is placed in the cutout. The workpiece is moved into the receiving groove through the insert gate by the upward and downward movement of the claw.

The upward and downward movement of the claw is elastically biased by a spring, and the claw is integrally attached to a vertical lifting pin of the mold, and a lever arm that engages with the head end of the lifting pin is attached to the back of the mold. This can be achieved by inserting and disposing a pressing pin into the mold, which is pivotally mounted on the lever arm and engaged with the lower end side of the lever arm so as to protrude and slide when the mold approaches the mold. This will be explained below based on the illustrated embodiment. In the figure, 1 is a movable mold, 2 is a fixed mold, 3 is a receiving groove for the workpiece, 4 is a protrusion that fits into the receiving groove 3 and forms the mold surface, 5 is a sprue, and 6 is a spool. , 7 are runners.

In this mold, the thickness is O, 1 TVfL, and the length and width are 2 Owrm.
The fixing part B can be formed on the metal plate A of a certain size. In this mold, a feeding device for the workpiece A is arranged on the movable mold 1 side.

The main body of the movable mold 1 has a housing 8 formed in its upper part for accommodating a workpiece A that is open at the top.

Inside this housing 8, a plurality of workpieces A are housed vertically in a line, and inside the housing 8 there is a pressing plate 9 for pushing the workpieces to one side and a spring 10.
It is arranged so that it can be biased and moved freely. In addition, an insert gate 11 with a width sufficient to allow one piece of workpiece A to be inserted in a vertical state is installed near the surface of the housing that faces the fixed mold.
is provided. This insert gate 11 is electrically connected to the receiving groove 3 of the workpiece A during resin molding, and inserts the workpiece A in the accommodation housing 8 one by one into the receiving groove 3.
It's starting to get more and more popular. A notch 12 is formed in the mold-contacting surfaces of the housing housing 8 and the insert gate 11, each of which has a partially linearly opened side surface. A pawl 13 is disposed within this notch 12 and moves up and down guided by the notch, and the pawl 13 is resiliently biased in the vertical direction of the mold by a spring 14. is installed on. The lifting pin 15 is pressed by a lever arm 17 supported by a shaft 16 on the back side of the main body of the movable mold 1, and moved downward against the spring 14. Therefore, the upper arm side of the lever arm 17 is engaged with the upper end of the lifting pin 15, and the lower arm side is engaged with the mold 1.
, 2C Pressing pin 18 that protrudes and slides as it moves closer
is engaged with. In the illustrated embodiment, the pressing pin 18 can be slid and protruded by engaging with a touch adjustment bolt 19 screwed into the fixed mold side. With this configuration, since the amount of protrusion of the press pin can be adjusted by screwing in or unscrewing the adjustment bolt 19s, it is also possible to prevent double feeding of the workpiece. In the feed device for workpieces A configured in this manner, five workpieces A are housed in advance in the housing 8 in parallel.

Then, when the movable mold 1 is moved close to the fixed mold 2 in order to resin mold the fixed part B to the workpiece A, the pressing pin 18 is protruded from the opposing surface of the fixed mold 2. It comes into contact with the adjustment bolt 19 and slides protruding leftward in the drawing. As the pusher pin 18 moves, the lever arm 17 that engages with the pin 18 rotates around the fulcrum 16 to push down the lift pin 15, and the touch claw 1 that is integrally attached to the pin 15 rotates around the fulcrum 16 to push down the lift pin 15.
3 moves downward. The pawl 13 engages with the most proximal workpiece housed in the housing 8, and as it moves downward, the workpiece A is pushed out from the insert gate 11 into the receiving groove 3. When the workpiece A is pushed out into the receiving groove 3, the movable mold 1 reaches the fixed mold 2 position,
Molten resin is injected from the sprue 5 into the mold surface formed by the receiving groove 3 and the protrusion 4, and the work of forming the fixing part B on the workpiece A is performed. When the work is completed and the movable mold 1 moves away, the elevating pin 15, which had been pressed by the lever arm 17, rises due to the spring 14 as the push pin 18 releases its support, and the 1
3 is returned to the engagement position with the workpiece A until the next time the mold approaches the mold. In addition, as shown in the second figure, at least four workpieces can be resin molded in one operation, and in that case, the workpiece storage housing 8,
Four rows of insert gates 11 and four rows of notches 12 are provided.

However, the claws 13 are each integrally formed on one side of a horizontally long plate 20, and the plate 20 is moved up and down together with the lifting pin 15 by a lever arm 17.
, there is no need to provide a plurality of pressing pins 18. As described above, according to the present invention, it becomes possible to automatically feed the workpiece into the resin molding die without relying on manual labor.
Work efficiency is greatly improved, and no skill is required.

The technology according to the present invention can be applied not only to insert molding molds as shown in the illustrated embodiment, but also to press machines for a wide variety of sheet metal work operations.

[Brief explanation of the drawing]

Fig. 1 shows an example of a workpiece fed by the device according to the present invention, Fig. 2 is a side end view of the workpiece feeding device, and Fig. 3 is a front view taken from the side of the movable mold. are shown respectively. 1: Movable mold, 2: Fixed mold, 3: Receiving groove for workpiece A, 8: Accommodation housing, 11: Insert gate, 12
: Notch, 13: Claw, 14: Spring, 15: Elevating pin, 17: Lever arm, 18: Pressing pin.

Claims (1)

[Claims] 1. In either one of the resin molding molds, the workpiece is placed between the facing surfaces of the fixed side mold and the movable side mold, and the molded resin material press-fitted through the spool is applied to the workpiece, A housing part is provided at the top of the mold to house and arrange a large number of workpieces vertically in parallel, and an insert gate that conducts to the receiving groove of the workpiece is installed at the end of the housing part closer to the surface facing the mold. In addition to forming the mold according to the thickness of the product, a part of the side surface of the housing and the insert gate facing the mold is cut out linearly, and a claw that engages with one piece of the workpiece is placed in the notch. , the claw is integrally attached to an elevating pin installed in the vertical direction of the mold so as to be elastically biased by a spring, and a lever arm that engages with the head end of the elevating pin is pivotally mounted on the back of the mold, 1. A workpiece feeding device for a resin molding mold, characterized in that a press pin is inserted into the mold and is engaged with the lower end side of the lever arm and protrudes and slides when the mold moves close to each other.