JPH0568618U - Injection molded product conveyor - Google Patents

Abstract

(57) [Summary] [Purpose] An injection molded product conveying device that can carry an injection-molded intermediate product that has been injection-molded and has the sprue attached to the next step while keeping the sprue in the proper position. [Structure] Molded intermediate product 7 taken out from the injection mold
And an intermediate product holding means 10 for holding a molded intermediate product 7 portion.
Molded intermediate product 7 held by the intermediate product holding means 10
And a sprue guide 12 that holds the sprue 8 in a predetermined position / state with respect to.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an injection molded product conveying device used to convey a molded intermediate product taken out from an injection molding die to the next step.

[0002]

[Prior Art]

 In order to cope with the complicated and large size of the injection molded product molded by the injection molding machine and to improve the production efficiency by adopting the multi-cavity construction method, the mold structure, especially the arrangement of sprue bushes, runners and gates. Various improvements have been made to the structure, and it is common to use a structure in which molten resin is injected from a sprue bush provided in the center of the stationary platen die to multiple gates via multiple runners. ing.

Then, as shown in the mold cross-sectional view of the gate portion shown in FIG. 3, the boundary surface between the fixed plate side mold 1 and the movable plate side mold 2 is not flat near the cavity 4, and the runner 3 is bent. Then, a structure similar to the well-known submarine gate 5 opened on the back surface of the injection-molded product is appropriate from the product shape and the like, and there are quite a few cases where the submarine gate 5 requires finishing of the gate trace.

In the injection molding process, the injection nozzle is pressed against the opening of the sprue bush to inject the molten resin from the submarine gate 5 into the cavity 4, and the injection nozzle is retracted to open the sprue bush at the opening. When the molten resin is separated and the molten resin in the cavity 4 cools, the movable plate side mold 2 is retracted and opened, or the intermediate split mold is also moved and opened, and the ejector pin is projected to form a molded intermediate product. Is taken out of the injection molding machine and conveyed to the next finishing process, inspection process, packaging process, etc.

In order to convey from the injection molding step to the next step, a conveyance jig, a conveyance robot, etc. (hereinafter referred to as an injection-molded article conveyance device) suitable for the shape of the molded article, setting in the next step, etc. The use of is advantageous for improving production efficiency.

When the molded intermediate product is taken out from the injection molding machine, the raw material resin solidified in the sprue bush extracted from the sprue bush (hereinafter referred to as sprue) and the raw material resin solidified in the runner 3 (hereinafter referred to as runner portion) Unnecessary parts are also removed at the same time, but depending on the shape of the molded product and the degree of surface finish required, the sprue and runner parts may remain attached to the molded intermediate product before being transported to the next process. Then, the sprue and runner parts are removed at the same time and finishing work is carried out at the same time to obtain a product with an excellent appearance.

[0007]

[Problems to be solved by the device]

 In recent injection molding processes, unlike conventional injection molding processes using standard gates such as simple side gates, there is a need for processes that respond to complications, aesthetic requirements, and enlargement of the shape of injection molded products. In many cases, such as the multi-cavity method, the sprue and runner parts are attached to the intermediate product and transferred to the next process, and the sprue and runner parts are removed and finishing work is performed simultaneously.

Then, a runner portion is attached to the molded intermediate product by the thinly bent gate portion, and a conical sprue heavier than the runner is projected at the end where the plurality of runner portions are gathered. There may be a problem that the sprue inclines downward during transportation to the process, which interferes with the work in the next process assuming that the sprue is in the normal position and state.

The present invention has been made to solve the above-mentioned problems of the prior art. A molded intermediate product that is injection-molded and has a sprue attached is used as a sprue with the sprue in the normal position and state. It is an object of the present invention to provide an injection molded product transporting device that can be transported to a process.

[0010]

[Means for Solving the Problems]

 Therefore, the injection molded product conveying device according to the present invention is an injection molded product conveying device for conveying the molded intermediate product taken out from the injection molding die to the next step, and is an intermediate product holding means for holding the molded intermediate product part. And the sprue guide for holding the sprue pulled out from the sprue bush at a predetermined position / state with respect to the molded intermediate product portion held by the intermediate product holding means. It is what

[0011]

[Action]

 With the above configuration, the intermediate product taken out from the injection molding die is held by the intermediate product holding means, and at the same time, the sprue protruding at the gathering end of the runner part adhered to the intermediate product by the thinly bent gate part. By holding the sprue with the sprue guide, the sprue can be held in the proper position and state with respect to the intermediate molded product and transported to the next step.

[0012]

【Example】

 Hereinafter, an injection molded article conveying apparatus according to the present invention will be described with reference to examples. FIG. 1 is a cross-sectional view of a main part showing the structure of the main part of an embodiment of the present invention, showing a state in which a molded intermediate product is held.

The injection molded product conveying device 6 of this embodiment is used for a finishing step or inspection of a molding intermediate product 7 taken out from an injection molding die having a standard gate such as a side gate or a submarine gate. It is used for transportation to the next process such as the process and packaging process.

In the molded intermediate product 7 to be conveyed, the runner portion 3a which is solidified in the runner 3 which has become a passage for the molten resin at the time of injection molding is connected by the submarine gate portion 5a at the thinly bent tip end portion of the runner 3. Further, the sprue 8 extracted from the sprue bush remains attached to the collecting end of the plurality of runner portions 3a.

The injection molded product conveying tool 6 is configured so that a plurality of grips 10 each having a suction cup 9 at the tip thereof are attached to a grip base 11, and the suction cups 9 hold the molded intermediate product 7 portion. There is. Reference numeral 12 is a sprue guide provided on the grip base 11, and the sprue 8 still attached to the molded intermediate product 7 is inserted into the opening 13 at the tip end of the sprue 8 at a predetermined position / state with respect to the molded intermediate product 7. It has a structure that can be held.

As shown in the enlarged perspective view of FIG. 2, the sprue guide 12 of this embodiment is provided with a circular opening 13 at the tip bending portion of a flat plate guide body 14 and is slidable with respect to the grip base 11. May be Further, various modifications are possible, such as a configuration in which the guide body 14 is divided at the opening 13 portion. Further, the grip 10 of the embodiment, which is an intermediate product holding means, can be variously modified.

Reference numeral 15 shown by a chain line in FIG. 1 is a mechanical chuck that holds the sprue 8 when the unnecessary runner portion 3 a and the sprue 8 are removed in the next step.

Although not shown in the drawings, in the injection molded product conveying tool 6 of the embodiment, a vacuum pipe and a valve for operating the suction cup 9 of the grip 10 and a grip base 11 are set in the injection molding machine and the next step. It is equipped with a guide member, a mounting member for the conveyor system, etc. that are suitable for the injection molding machine, the conveyor system, and the next process, and the specifications are determined within the entire production line. However, various configurations and shapes are possible.

With the above configuration, the molding intermediate product 7 taken out from the injection molding dies 1 and 2 is held by the grip 10, and at the same time, the runner attached to the molding intermediate product 7 by the thinly bent gate portion 5a. By inserting and holding the sprue 8 projecting from the collecting end of the portion 3a in the opening 13 of the sprue guide 12, the sprue 8 is held in the normal position / state with respect to the molded intermediate product 7, and the next step is performed. Can be transported.

[0020]

[Effect of the device]

 As described above, according to the present invention, the molding intermediate product taken out from the injection mold is held by the intermediate product holding means, and at the same time, the gate portion gathers the runner parts attached to the molding intermediate product. By holding the sprue protruding at the end with the sprue guide, it is possible to hold the sprue in the normal position and state with respect to the molded intermediate product and transport it to the next process, facilitating the work in the next process. You can proceed efficiently.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of an embodiment.

FIG. 2 is a perspective view of a sprue guide according to an embodiment.

FIG. 3 is a mold cross-sectional view of a submarine gate portion.

[Explanation of symbols]

 1 Fixed plate side mold 2 Movable plate side mold 3 Runner 3a Runner part 4 Cavity 5 Submarine gate 5a Gate part 6 Injection molded product transfer device 7 Molding intermediate product 8 Sprue 9 Sucker 10 Grip 11 Grip base 12 Sprue guide 13 Opening 14 Guide body 15 Mechanical chuck

Claims (1)

[Scope of utility model registration request] 1. An injection molded product conveying device for conveying a molded intermediate product taken out from an injection molding die to a next step, comprising intermediate product holding means for holding a molded intermediate product part, and holding by the intermediate product holding means. And a sprue guide for holding the sprue pulled out from the sprue bush at a predetermined position / state with respect to the formed intermediate product portion.