JP3331704B2 - Mold device for insert molding of soft tubular wire rod - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to insert molding in which a concave groove is formed on a parting line surface of a mold, and a soft tube-shaped wire is inserted into the concave groove and molded. The present invention relates to a mold apparatus.

[0002]

2. Description of the Related Art Conventionally, a mold apparatus as shown in FIGS. 5 and 6 has been known as an insert molding mold apparatus for insert-molding a wire or the like. In the following, the upper mold 10
Semi-circular grooves 104 and 105 into which wires are inserted are formed on a parting line (matching surface) 103 of the mold apparatus including the mold 1 and the lower mold 102. Further, a cavity 106 is formed in which the resin flows into the lower mold 102 during molding, and a molded product is molded.

Next, the operation will be described. Each mold 1
The wire conveyed by a robot or the like is inserted into the concave groove 105 of the lower mold 102 in a state where the 01 and 102 are expanded. Next, the molds 101 and 102 are closed and injection molding is performed. Since the wire is formed integrally with the molded product, the wire is placed so as to be located inside the cavity 106.

[0004]

However, in the above-mentioned prior art, the wire itself is relatively soft, so that it is not completely inserted into the concave groove 105. Therefore, when the mold is closed in an incompletely inserted state, the end 107a of the wire 107 is crushed as shown in FIG. 7 and the commercial value is reduced. Further, as shown in FIG. 8, there is also a case where the molding is performed while being curved, which also reduces the commercial value. At present, the wire is grasped by hand and completely inserted into the concave groove 105 due to the above-mentioned problems. However, not only the labor cost is increased but also the productivity is low.

[0005]

According to the present invention, a concave groove is formed in the parting line surface of the upper and lower molds, and a soft tube is formed in the concave groove.
In a soft tube-shaped wire insert molding die apparatus in which a resin-shaped portion and a soft tube-shaped wire are integrally molded by inserting a wire- shaped wire into a concave portion of a lower mold. The gist of the invention is to provide a moving means for moving a guide block having a concave groove having substantially the same shape as the groove facing the concave groove facing the lower die and outside the die.

[0006]

FIG. 1 shows an example of a molded product molded by a mold apparatus according to the present invention, which is an accelerator cable of an automobile in which a resin molded portion A and a soft tube B are integrally molded. Next, as an example, a vertical split type mold apparatus for insert molding will be described. A lower mold 2 is fixed to the upper surface of the base 1, and a guide block 3 as shown in FIG.
Is fixed. Its the lower block 4 is formed with grooves 5 of the soft tube-shaped wire and substantially the same shape, and tapered groove 6 in the end portion so as to facilitate inserting the soft tube-shaped wire is formed.

On the other hand, above the lower block 4, an upper block 7 having substantially the same shape as the lower block 4 is arranged. The upper block 7 also has a lower block 4
Similarly, a concave groove 8 and a tapered groove 9 are formed.
The upper block 7 is connected via a bracket 10 to an air cylinder 11 which can move up and down, and the air cylinder 11 is connected to an air cylinder 12 which can move forward and backward. That is, the upper block 7 is mounted to be movable up and down, forward and backward by two air cylinders 11 and 12.

The lower mold 2 has a cavity 13 in which a molded product is formed.
Is provided with a pin 14 into which a soft tubular wire 19 is inserted. The bracket 10 has a soft tube.
An air cylinder 15 that can move up and down to prevent bending (hanging) of the wire in the form of a tube is attached.

Further, a link piece 17 having a shaft 16 as a fulcrum and a sensor 18 for detecting the inclination of the link piece 17 are attached to the upper block 7.

Next, the operation will be described. FIG. 2 is a view showing a state where the mold is expanded. Softer than this state
The rod- shaped wire 19 is gripped and conveyed by the chuck 20 of the robot, and guided from the tapered grooves 6 and 9 to the concave grooves 5 and 8 of the guide block 3. At this time, even if the soft tubular wire 19 is slightly curved, it is corrected by the concave grooves 5 and 8 and the pin 1
It is led to 4. The flexible tubular wire 19 is the pin 14
The link piece 17 rotates around the shaft 16 as a fulcrum, and the sensor 18 detects its operation (insertion completed). When the insertion is completed, the air cylinder 11 operates to operate the upper block 7.
Rises. Next, the air cylinder 12 is operated, and the upper block 7 retreats and separates from the mold. When the release signal is sent to a molding machine (not shown), the mold is closed and injection molding is started. Here, one cycle is completed. When molding again, the mold is expanded and each air cylinder 11, 1
2 is restored.

[0011]

According to the present invention, a concave groove is formed on the parting line surface of the upper and lower molds, a soft tube-shaped wire is inserted into the groove, and the resin molded portion and the soft tube-shaped wire are integrally formed. In the soft tube-shaped wire rod insert molding die apparatus, the guide block having the concave groove of substantially the same shape as the concave groove of the lower die is opposed to the concave groove facing position of the lower die and outside the die. Since the moving means for moving the mold is mounted, automation can be achieved, and a mold apparatus for insert molding with improved productivity can be provided.

[Brief description of the drawings]

FIG. 1 is a front sectional view of an example of a molded product molded by a mold device of the present invention.

FIG. 2 is a cutaway front view of an essential part of one embodiment of the present invention.

FIG. 3 is a plan view of FIG. 2;

4 is a right side view of a soft tube-shaped wire insertion portion of the upper and lower blocks of FIG. 2;

FIG. 5 is a front view of a conventional device.

FIG. 6 is a plan view of a lower mold of FIG. 5;

FIG. 7 is a front view of a conventional device in which a wire side end is crushed and inserted.

FIG. 8 is a plan view of a lower mold in which a wire is bent and inserted in a conventional device.

[Explanation of symbols]

 Reference Signs List A resin molded part B soft tube 1 base 2 lower mold 3 guide block 4 lower block 5,8 concave groove for wire insertion 6,9 taper groove 7 upper block 10 bracket 11 vertically movable air cylinder 12 advanceable and retractable Air Cylinder 13 Cavity 19 Soft Tubular Wire

Claims (1)

(57) [Claims] 1. A concave groove is formed on a parting line surface of an upper and lower mold, a soft tube-shaped wire is inserted into the groove, and a resin molded portion and a soft tube-shaped wire are integrally formed. In a mold device for insert molding of a wire in the form of a soft tube, a guide block in which a concave groove having substantially the same shape as the concave groove of the lower die is moved to the concave groove opposing position of the lower die and outside the die. Soft chew characterized by attaching means
Mold device for wire- shaped insert molding.