CN215396577U

CN215396577U - Mould for plastic product injection moulding

Info

Publication number: CN215396577U
Application number: CN202121715279.3U
Authority: CN
Inventors: 赵明勇; 黄志平
Original assignee: Shenzhen Xinglixin Technology Co ltd
Current assignee: Shenzhen Xinglixin Technology Co ltd
Priority date: 2021-07-27
Filing date: 2021-07-27
Publication date: 2022-01-04
Anticipated expiration: 2031-07-27

Abstract

The utility model discloses a mold for plastic product injection, which comprises a sprue bush, wherein a glue inlet part at the lower part of the sprue bush penetrates through an upper mold plate and extends into a flow channel in an upper mold frame, a heating bush is sleeved on the outer side of the glue inlet part, a heat exchange wire is arranged on the inner side of the heating bush, a one-way valve body is arranged at the bottom end of the glue inlet part, and a discharge hole of the one-way valve body corresponds to a glue inlet on a mold core and is communicated with a molding cavity through the glue inlet. In the utility model, the molten material is injected into the molding cavity in the mold core through the sprue bush, and when the molten material passes through the longer-distance runner part, the glue inlet part and the heating bush are at higher temperature under the heating action of the heat exchange wire, so that the rapid reduction of the temperature of the molten material is inhibited, and the material entering the molding cavity still has better temperature and fluidity.

Description

Mould for plastic product injection moulding

Technical Field

The utility model relates to the field of injection molds, in particular to a mold for injection molding of plastic products.

Background

The injection mold varies according to the structural change of the product to be manufactured, but the basic composition structure as a whole is not changed. Generally, an injection mold is composed of a movable mold mounted on a movable mold plate of an injection molding machine and a stationary mold mounted on a stationary mold plate of the injection molding machine.

When hot-melt plastic enters a mold cavity in the production process of the existing injection mold, the flowability is poor due to large temperature change, the mold cavity is difficult to uniformly fill, and the quality of a formed plastic part after cooling is extremely poor and can not meet the quality requirement completely.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a mold for plastic product injection, which aims to solve the problems that the flowability is poor due to large temperature change, a mold cavity is difficult to uniformly fill, and a plastic part formed after cooling has extremely poor quality and can not meet the quality requirement at all.

In order to achieve the purpose, the utility model provides the following technical scheme:

plastic products mould for injection moulding, including the runner cover, the portion of gluing that advances of the lower part of runner cover passes the cope match-plate pattern and extends to the inside runner of die frame in, the outside cover that advances the portion of gluing is equipped with the heating jacket, the inboard of heating jacket is equipped with the heat exchange silk, the bottom department that advances the portion of gluing is equipped with check valve body, and check valve body's discharge gate and mould benevolence on advance gluey mouthful correspond, and through advancing gluey mouthful and shaping chamber intercommunication.

Furthermore, the sprue bush is fixedly connected with a positioning ring fixed on the upper template, and the top end of the sprue bush is positioned above the positioning ring.

Further, the heat exchange wire is spirally arranged.

Further, check valve body includes the casing, the top of casing is equipped with and advances the feed inlet of gluey bottom discharge port intercommunication, the bottom of casing is equipped with the discharge gate, the inboard of casing is equipped with compression spring, compression spring's top be equipped with feed inlet complex cock body.

Furthermore, the top of cock body is equipped with the through-hole that staggers with the feed inlet position, the through-hole all communicates with the guide chamber of cock body lower part.

Further, the lower part of the plug body passes through the compression spring and extends to the inner side of the discharge hole.

Compared with the prior art, the utility model has the beneficial effects that:

in the utility model, the molten material is injected into the molding cavity in the mold core through the sprue bush, and when the molten material passes through the longer-distance runner part, the glue inlet part and the heating bush are at higher temperature under the heating action of the heat exchange wire, so that the rapid reduction of the temperature of the molten material is inhibited, and the material entering the molding cavity still has better temperature and fluidity.

Simultaneously when pushing out the shaping product, for avoiding the interior melting material of runner to flow out, carry out the shutoff through check valve body to the runner, avoided the waste of material, the existence of heating jacket and heat exchange wire also leads to the material can not the cooling solidification simultaneously, still possesses better mobility.

Drawings

FIG. 1 is a schematic view of the overall structure of a mold for injection molding of plastic products;

FIG. 2 is a schematic view of a check valve body in a mold for injection molding of plastic products.

In the figure: 1. a sprue bush; 2. a glue inlet part; 3. mounting a template; 4. putting a mold frame; 5. a flow channel; 6. heating a jacket; 7. heat exchange wires; 8. a check valve body; 81. a housing; 82. a feed inlet; 83. a discharge port; 84. a compression spring; 85. a plug body; 86. a through hole; 87. a material guiding cavity; 9. a mold core; 10. a glue inlet; 11. a molding cavity; 12. a retaining ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides the following technical solutions:

plastic products mould for injection molding, including runner cover 1, the portion of gluing 2 that advances of the lower part of runner cover 1 passes cope match-plate pattern 3 and extends to the inside runner 5 of 4 of upper die frames in, the outside cover that advances the portion of gluing 2 is equipped with heating jacket 6, the inboard of heating jacket 6 is equipped with heat exchange wire 7, the bottom department that advances the portion of gluing 2 is equipped with check valve body 8, and the discharge gate of check valve body 8 corresponds with advancing jiao kou 10 on mould benevolence 9, and through advancing jiao kou 10 and shaping chamber 11 intercommunication.

The melting material is injected into the molding cavity 11 inside the mold core 9 through the sprue bush 1, and when the melting material passes through the long-distance runner 5 part, the glue inlet part 2 and the heating sleeve 6 are at a high temperature under the heating action of the heat exchange wire 7, so that the rapid reduction of the temperature of the melting material is inhibited, and the material entering the molding cavity 11 still has good temperature and fluidity.

Simultaneously when pushing out the shaping product, for avoiding the interior melting material of runner 5 to flow out, carry out the shutoff through check valve body 8 to runner 5, avoided the waste of material, the existence of heating jacket 6 and heat transfer silk 7 also leads to the material can not the cooling solidification simultaneously, still possesses better mobility.

The sprue bush 1 is fixedly connected with a positioning ring 12 fixed on the upper template 3, the top end of the sprue bush 1 is positioned above the positioning ring 12, and the sprue bush 1 is positioned and fixed through the positioning ring 12 so as to avoid the sprue bush 1 from being separated.

The heat exchange wire 7 is spirally arranged, so that the heating effect of the heat exchange wire 7 is ensured.

The check valve body 8 preferably has the following structure: including casing 81, casing 81's top is equipped with and advances the feed inlet 82 of 2 bottom discharge ports of gluey portion intercommunication, casing 81's bottom is equipped with discharge gate 83, casing 81's inboard is equipped with compression spring 84, compression spring 84's top be equipped with feed inlet 82 complex cock body 85, cock body 85's top be equipped with feed inlet 82 staggered through-hole 86 in position, through-hole 86 all communicates with guide chamber 87 of cock body 85 lower part, and compression spring 84 and the inboard that extends to discharge gate 83 are passed to cock body 85's lower part.

The molten material presses the plug body 85, which in turn acts on the compression spring 84, so that the feed opening 82 communicates with the through hole 86, after which the molten material enters the molding chamber 11 through the guide chamber 87 and the discharge opening 83.

After the injection of the molten material is stopped, the compression spring 84 pushes the plug 85 to make the feed port 82 and the through hole 86 staggered, thereby cutting off the feed passage.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which includes the appended claims and their equivalents.

Claims

1. Plastic product moulds plastics and uses mould, including runner cover (1), its characterized in that: the runner cover is characterized in that a glue inlet portion (2) at the lower portion of the runner sleeve (1) penetrates through an upper die plate (3) and extends into a flow channel (5) inside an upper die frame (4), a heating sleeve (6) is sleeved on the outer side of the glue inlet portion (2), a heat exchange wire (7) is arranged on the inner side of the heating sleeve (6), a check valve body (8) is arranged at the bottom end of the glue inlet portion (2), a discharge hole of the check valve body (8) corresponds to a glue inlet (10) in a die core (9), and the glue inlet (10) is communicated with a forming cavity (11).

2. The mold for injection molding of plastic articles according to claim 1, wherein: the sprue bush (1) is fixedly connected with a positioning ring (12) fixed on the upper template (3), and the top end of the sprue bush (1) is positioned above the positioning ring (12).

3. The mold for injection molding of plastic articles according to claim 1, wherein: the heat exchange wire (7) is spirally arranged.

4. The mold for injection molding of plastic articles according to claim 1, wherein: check valve body (8) include casing (81), the top of casing (81) is equipped with and advances feed inlet (82) that gluey portion (2) bottom discharge end communicates, the bottom of casing (81) is equipped with discharge gate (83), the inboard of casing (81) is equipped with compression spring (84), the top of compression spring (84) be equipped with feed inlet (82) complex cock body (85).

5. The mold for injection molding of plastic articles according to claim 4, wherein: the top end of the plug body (85) is provided with through holes (86) staggered with the feed inlet (82), and the through holes (86) are communicated with a material guide cavity (87) at the lower part of the plug body (85).

6. The mold for injection molding of plastic articles according to claim 4, wherein: the lower part of the plug body (85) passes through the compression spring (84) and extends to the inner side of the discharge hole (83).