Mold structure with submarine gate glue injection and ejection in the front mold of the pin-point gate

Abstract

The present invention relates to a mold structure for a submarine gate injection and ejection in the front mold of a pin-point gate. A cavity for product molding is provided between the upper mold and the lower mold. An ejection system for product molding is provided between the lower mold and the ejector plate. An active ejector plate is provided under the upper mold. A sprue puller is provided on the active ejector plate. A submarine gate is provided under the sprue puller. A spring and a height equalizing bolt II are provided between the active ejector plate and the mold core seat. When the mold is opened, the upper mold, the active ejector plate, the sprue puller and the submarine gate move synchronously under the support of the spring to automatically cut the glue between the submarine gate and the product. When the mold is further opened, the spring is forced to compress under the limiting action of the height equalizing bolt II, so that the active ejector plate drives the sprue puller to move and eject the submarine gate. Finally, under the action of the injection molding machine ejector rod, the ejector plate drives the ejector pins of the rear mold to eject the product and take out the product. The present invention solves the technical problem of submarine gate injection in the front mold of a pin-point gate, and makes the product processing simple and the production convenient. The product has a beautiful appearance and no defects.

Description

Technical Field

[0001] The present invention relates to a plastic product mold, and in particular to a mold structure with a submarine gate for the front mold of a fine gate for injecting and ejecting glue. Background Art

[0002] Plastic products are continuously expanding and being more widely used in various industries, and the structures of products are becoming more and more complex. There are higher requirements for the precise fit of molds and the stability of dimensions. The complexity of products directly requires higher stability of the mold structure. While simplifying the structure, how to ensure the simplicity of processing, the convenience of maintenance, and the rationality of actions has become a series of research topics.

[0003] With the current pursuit of excellent quality and the progress of social technology, the application of plastic products has become diversified in various fields. The shapes of products are more complex, and there are also typical parts with special structures. The problem of injecting and ejecting glue with a submarine gate for the front mold of a fine gate in the mold industry has not been solved. Here, more attention needs to be paid to the rationality and stability of the structure, the simplicity of processing, and the convenience of production! To make the product appearance beautiful and defect-free. Automatically cut the glue gate to save labor. How to optimize and innovate on the existing structure to obtain a more reasonable and effective mold structure that is simple and can control costs. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: the problem of how to eject the glue injected by the submarine gate for the front mold of a fine gate, and to provide a mold structure for injecting and ejecting glue with a submarine gate for the front mold of a fine gate.

[0005] To solve the above technical problem, the technical solution of the present invention is: a mold structure for injecting and ejecting glue with a submarine gate for the front mold of a fine gate, including an upper mold and a lower mold. A cavity for product forming is provided between the upper mold and the lower mold. An ejection system for product forming is provided between the lower mold and the ejector plate. An active ejector plate is provided under the upper mold. A pulling rod is provided on the active ejector plate. A submarine gate is provided under the pulling rod. A spring and an equal-height bolt II are provided between the active ejector plate and the mold core seat.

[0006] Further, an equal-height bolt I for limiting the opening distance of the fixed template is also provided under the upper mold.

[0007] Further, the glue injection method of the upper mold adopts glue injection with a submarine gate, and the glue is automatically cut during mold opening.

[0008] Further, during mold opening, the upper mold, the active ejector plate, the pulling rod, and the submarine gate move synchronously under the support of the spring to automatically cut the glue between the submarine gate and the product.

[0009] Furthermore, when the mold continues to be opened, the limiting effect of the spring on the equal height bolt 2 forces the spring to compress, so that the movable ejector plate drives the pulling rod to move and eject the latent glue outlet. Finally, under the action of the ejector rod of the injection molding machine, the ejector plate drives the rear mold ejector to eject the product and take out the product.

[0010] The beneficial effects of the present invention are:

[0011] The mold structure for latent glue inlet and outlet of the front mold of the fine sprue solves the technical problem of latent glue inlet of the front mold of the fine sprue, and makes product processing simple and production convenient, and makes the product appearance beautiful and defect-free.

[0012] Automatic glue breaking is achieved when the mold is opened, making the product look beautiful, defect-free and automated; the ejector plate of the upper mold ejects the material removal part of the water outlet, and the ejector plate spring supports the ejector plate to move synchronously with the mold opening movement. The mold opening control limit equal height bolts are in place to force the spring to compress the ejector plate to drive the ejector to eject the latent glue outlet, and the lower mold part is ejected by the injection molding machine to push the ejector plate to take out the product. With a reasonable and stable structure, the mold action is realized by producing simple and convenient ordinary parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the mold structure of the fine-gate front mold for latent glue inlet and outlet of the present invention;

[0014] Figure 2 It is a schematic diagram of the latent glue feeding structure;

[0015] Figure 3 This is a schematic diagram of the water outlet;

[0016] Figure 4 This is a schematic diagram of the nozzle completely separated from the mold. DETAILED DESCRIPTION

[0017] In order to make the present invention more clearly understood, preferred embodiments are described in detail below with reference to the accompanying drawings.

[0018] like Figures 1 to 4 As shown, the present invention provides a mold structure for latent glue inlet and outlet of a fine-water front mold, comprising an upper mold 1, a movable ejector plate 2, a lower mold 8, and an ejector plate 9. A cavity for molding a product is provided between the upper mold 1 and the lower mold 8, and an ejector system for molding a product is provided between the ejector plate 9 and the lower mold 8. Specifically, a movable ejector plate 2 and a height-conforming bolt 3 for limiting the mold opening distance of a fixed mold plate are provided below the upper mold 1. A pulling rod 4 is provided on the movable ejector plate 2, and a latent glue outlet 5 is provided below the pulling rod 4. A spring 6 and a height-conforming bolt 7 are provided between the movable ejector plate 2 and the core seat.

[0019] For the glue injection method of the upper mold 1, a submarine gate is adopted for glue injection, and the glue is automatically cut off when the mold is opened; the movable ejector plate 2 of the upper mold is used to eject the water outlet and demolding part through the sprue puller 4; the spring 6 on the movable ejector plate 2 supports the synchronous mold opening movement of the movable ejector plate 2; when the mold opening control limit equal height bolt two 7 is in place, the spring 6 is forced to compress, so that the movable ejector plate 2 drives the sprue puller 4 to eject the water outlet; in the lower mold part, the ejector plate 9 is pushed by the injection molding machine ejector to take out the product 10.

[0020] When the mold is opened (such as Figure 3 ), the upper mold 1, the movable ejector plate 2, the sprue puller 4, and the submarine gate 5 move synchronously under the support of the spring 6, so that the submarine gate 5 is automatically cut off from the product 10. There is a sprue puller 4 on the movable ejector plate 2, and the sprue puller 4 moves synchronously with the submarine gate 5. Continue to open the mold (such as Figure 4 ), under the limiting action of the equal height bolt two 7, continue to open the mold, forcing the spring 6 to compress, so that the movable ejector plate 2 drives the sprue puller 4 to move and eject the submarine gate 5. Finally, under the action of the injection molding machine ejector rod, the ejector plate 9 drives the ejector pins of the rear mold to eject the product 10 and take out the product. Thus, the submarine gate glue injection and demolding of the fine gate front mold are realized.

[0021] The mold structure of the fine gate front mold with submarine gate glue injection and demolding of the present invention realizes automatic glue cutting when the mold is opened, making the product appearance beautiful, defect-free and realizing automation; the ejector pins on the movable ejector plate of the upper mold eject the water outlet and demolding part, and the spring of the movable ejector plate supports the synchronous mold opening movement of the movable ejector plate together. When the mold opening control limit equal height bolt is in place, the spring is forced to compress, so that the movable ejector plate drives the ejector pins to eject the submarine gate. In the lower mold part, the ejector plate is pushed by the injection molding machine ejector to take out the product, and with a reasonable and stable structure, simple and convenient production of ordinary parts realizes the mold action.

Claims

1. A mold structure with a submarine gate for injecting and ejecting in the front mold of a pin-point gate, including an upper mold and a lower mold. There is a cavity for product molding between the upper mold and the lower mold, and an ejection system for product molding is provided between the lower mold and the ejector plate. It is characterized in that: An active ejector plate is provided under the upper mold. A sprue puller is provided on the active ejector plate. A submarine gate is provided under the sprue puller. A spring and a height equalizing bolt two are provided between the active ejector plate and the core seat; A height equalizing bolt one for limiting the opening distance of the fixed template is also provided under the upper mold; The injection method of the upper mold adopts submarine gate injection, and the glue is automatically cut off when opening the mold; When opening the mold, the upper mold, the active ejector plate, the sprue puller and the submarine gate move synchronously under the support of the spring to automatically cut off the submarine gate from the product; When continuing to open the mold, the limiting effect of the height equalizing bolt two forces the spring to compress, so that the active ejector plate drives the sprue puller to move out the submarine gate. Finally, under the action of the injection machine ejector rod, the ejector plate drives the ejector pins of the rear mold to eject the product and take out the product.

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