Plastic mold with auxiliary demolding assembly

Abstract

The utility model relates to a plastic mould provided with an auxiliary demoulding assembly, which aims to solve the technical problem that chips are easy to enter a notch after the current thimble retracts and are difficult to clean, and comprises a mould body, a thimble seat is arranged in an ejection area of the mould body, and the plastic mould also comprises a thimble structure; the ejector pin structure is arranged on the ejector pin seat; the ejector pin structure comprises a connecting seat and a pin body; the connecting seat is embedded in the top side of the ejector pin seat; the needle body is arranged at the top end of the connecting seat; the top end of the needle body is arranged in a lower mold ejection groove of the mold body; a plurality of inlets are formed in the outer ring wall of the top of the needle body in an annular array mode, the inlets are communicated with an inner cavity of the needle body, and a connector is fixedly arranged at the bottom of the needle body. And an external air extractor is used for extracting air, so that chippings in the die cavity are absorbed from the inlet and are sucked out through the inner cavity of the needle body and the air pipe, and the chippings are convenient to clean.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic molds, in particular to a plastic mold provided with an auxiliary demoulding component. Background Art

[0002] Plastic mold is the abbreviation of a combined mold used for compression molding, extrusion molding, injection molding, blow molding and low-foaming molding. The coordinated changes of the mold convex and concave molds and the auxiliary molding system can process a series of plastic parts of different shapes and sizes.

[0003] Mechanical demoulding is one of the most widely used demoulding methods. It is a demoulding method that separates the mold and plastic products from the mold cavity through the up and down movement of the mold ejector pin or bottom pin.

[0004] The ejector pin of mechanical demoulding extends into the mold cavity to eject the plastic part during demoulding. There will be debris when the plastic part is separated from the mold cavity. After the ejector pin retracts, it will retract into the ejection groove. There will be a notch at the ejection position in the mold cavity. When the ejector pin retracts, it is easy for debris to enter the notch, which is difficult to clean.

[0005] In view of this, we propose a plastic mold with an auxiliary demoulding component. Utility Model Content

[0006] The utility model aims to overcome the shortcomings of the prior art, meet practical needs, and provide a plastic mold with an auxiliary demoulding component to solve the technical problem that debris easily enters the slot after the ejector pin is retracted, making it difficult to clean.

[0007] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is: designing a plastic mold with an auxiliary demoulding component, including a mold body, an ejector seat is arranged in the ejection area of ​​the mold body, and also includes an ejector structure;

[0008] The ejector pin structure is arranged on the ejector pin seat;

[0009] The ejector pin structure comprises a connecting seat and a pin body;

[0010] The connecting seat is embedded in the top side of the ejector seat;

[0011] The needle body is arranged at the top end of the connecting seat;

[0012] Wherein, the top end of the needle body is arranged in the lower mold ejection groove of the mold body;

[0013] Among them, the outer ring wall at the top of the needle body is provided with a plurality of inlets in a circular array, and the inlets are connected with the inner cavity of the needle body. A joint is fixedly provided at the bottom of the needle body, and the inner hole of the joint is connected with the inner cavity of the needle body.

[0014] Preferably, a sealing plate is fixedly provided at the bottom end of the needle body, and the sealing plate is used to close the bottom opening of the inner cavity of the needle body.

[0015] Preferably, a stud is fixedly provided on the bottom side of the sealing plate, and the stud is threadedly matched with a threaded hole provided on the top side of the connecting seat.

[0016] Preferably, the joint corresponds to an opening of an ejection area of ​​the mold body.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The utility model has the advantage of arranging a connecting seat, a needle body, an inlet and a joint, so that when the needle body ejects the plastic part, the inlet extends into the mold cavity from the ejection groove, and an external vacuum device is used to evacuate air so that the debris in the mold cavity is absorbed from the inlet and sucked out through the inner cavity of the needle body and the air pipe, which is convenient for cleaning the debris and solves the problem that the debris easily enters the groove after the ejector pin is retracted, making it difficult to clean.

[0019] 2. The utility model has the advantage of a detachable design of the needle body and the connecting seat by providing a sealing plate, a stud and a threaded hole, so that a damaged needle body can be easily replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the ejector structure of the utility model;

[0022] Figure 3 For the utility model Figure 2 A magnified schematic diagram of point A;

[0023] Figure 4 This is a schematic diagram of the ejector structure of the utility model;

[0024] In the figure: 1. mold body; 2. ejector seat; 3. ejector structure;

[0025] 301, connecting seat; 302, needle body; 303, joint; 304, sealing plate; 305, stud;

[0026] 3011, threaded hole;

[0027] 3021. Entrance. DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0029] Example 1: A plastic mold with an auxiliary demoulding component, see Figures 1 to 4, comprising a mold body 1, an ejection area of ​​the mold body 1 is arranged with an ejector seat 2, and also comprises an ejector structure 3;

[0030] The ejector structure 3 is arranged on the ejector seat 2;

[0031] The ejector pin structure 3 includes a connecting seat 301 and a needle body 302;

[0032] The connecting seat 301 is embedded in the top side of the ejector seat 2; the needle body 302 is arranged at the top of the connecting seat 301; wherein, the top of the needle body 302 is arranged in the lower mold ejection groove of the mold body 1; wherein, the outer ring wall at the top of the needle body 302 is provided with a plurality of inlets 3021 in a circular array, and the inlets 3021 are connected to the inner cavity of the needle body 302, and a joint 303 is fixedly provided at the bottom of the needle body 302, and the inner hole of the joint 303 is connected to the inner cavity of the needle body 302, and the joint 303 is connected to the air pipe of the external suction device.

[0033] The utility model has the advantage of arranging a connecting seat 301, a needle body 302, an inlet 3021 and a joint 303, so that when the needle body 302 ejects a plastic part, the inlet 3021 extends into the mold cavity from the ejection groove, and an external vacuum device is used to evacuate air so that debris in the mold cavity is absorbed from the inlet 3021 and sucked out through the inner cavity of the needle body 302 and the air pipe, which is convenient for cleaning debris and solves the problem that debris easily enters the slot after the ejector needle is retracted, making it difficult to clean.

[0034] Specifically, a sealing plate 304 is fixedly provided at the bottom end of the needle body 302 , and the sealing plate 304 is used to close the bottom end opening of the inner cavity of the needle body 302 ; a stud 305 is fixedly provided on the bottom side of the sealing plate 304 , and the stud 305 is threadedly matched with a threaded hole 3011 opened on the top side of the connecting seat 301 .

[0035] The utility model has the advantage that the needle body 302 and the connecting seat 301 are detachable by arranging the sealing plate 304 , the stud 305 and the threaded hole 3011 , so that the damaged needle body 302 can be easily replaced.

[0036] Furthermore, the connector 303 corresponds to the opening of the ejection area of ​​the mold body 1, so that the connector 303 can be connected to the air pipe of the external suction device.

[0037] Working principle: When using the device of the utility model, the joint 303 is connected to the air pipe of the external suction device. After the plastic part is formed in the mold body 1, the mold body 1 is opened, and the needle body 302 ejects the plastic part. At this time, the inlet 3021 extends into the mold cavity from the ejection groove. The external suction device is used to evacuate air so that the debris in the mold cavity is absorbed from the inlet 3021 and sucked out through the inner cavity of the needle body 302 and the air pipe. After taking out the plastic part, the needle body 302 moves down and the inlet 3021 retracts into the ejection groove again.

[0038] When the needle body 302 needs to be replaced, the mold body 1 is opened, the air pipe connected to the connector 303 is unplugged, the old needle body 302 is rotated, and the stud 305 rotates accordingly and leaves the threaded hole 3011, and the stud 305 at the bottom of the new needle body 302 is screwed into the threaded hole 3011 accordingly, the connector 303 is connected to the air pipe, and the mold body 1 is installed.

[0039] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A plastic mold with an auxiliary demoulding component, comprising a mold body (1), wherein an ejector seat (2) is arranged in an ejection area of ​​the mold body (1), characterized in that: Also includes: An ejector pin structure (3) is arranged on the ejector pin seat (2); The ejector pin structure (3) comprises: A connecting seat (301) is embedded in the top side of the ejector seat (2); A needle body (302) is arranged at the top of the connecting seat (301); Wherein, the top end of the needle body (302) is arranged in the lower mold ejection groove of the mold body (1); The outer wall at the top of the needle body (302) is provided with a plurality of inlets (3021) in a circular array, and the inlets (3021) are connected to the inner cavity of the needle body (302). A joint (303) is fixedly provided at the bottom of the needle body (302), and the inner hole of the joint (303) is connected to the inner cavity of the needle body (302).

2. A plastic mold with an auxiliary demoulding component as claimed in claim 1, characterized in that: A sealing plate (304) is fixedly provided at the bottom end of the needle body (302), and the sealing plate (304) is used to close the bottom opening of the inner cavity of the needle body (302).

3. A plastic mold with an auxiliary demoulding component as claimed in claim 2, characterized in that: A stud (305) is fixedly provided on the bottom side of the sealing plate (304), and the stud (305) is threadedly matched with a threaded hole (3011) provided on the top side of the connecting seat (301).

4. A plastic mold with an auxiliary demoulding component as claimed in claim 1, characterized in that: The joint (303) corresponds to the opening of the ejection area of ​​the mold body (1).

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