CN210233848U

CN210233848U - Cold runner structure

Info

Publication number: CN210233848U
Application number: CN201921182720.9U
Authority: CN
Inventors: Liyi Yang; 杨立义
Original assignee: Guangdong Liyea Precision Mould Manufacturing Co ltd
Current assignee: Guangdong Liyea Precision Mould Manufacturing Co ltd
Priority date: 2019-07-25
Filing date: 2019-07-25
Publication date: 2020-04-03
Anticipated expiration: 2029-07-25

Abstract

The utility model relates to a cold runner structure belongs to injection mold technical field. The hot-pressing die mainly comprises an upper die holder, a glue injection sleeve, a heating plate, a shunting channel, a glue opening sleeve, a heat insulation plate, an upper die plate, a lower die plate and a lower die holder; a shunting channel is arranged in the heating plate and is communicated with the glue injection sleeve, a heat insulation plate is arranged at the bottom of the heating plate and is fixedly connected with the upper template, and the glue opening sleeve is arranged in the heating plate, the heat insulation plate and the upper template and is communicated with the die cavity; the upper template and the lower template are matched and assembled to form a die cavity; the inside of the heating plate is connected with each shunt pipe through a material well, so that one glue injection machine nozzle can inject glue at one time and shunt the glue to a plurality of cavities; each shunt pipe completes shunting in the heating plate, so that the temperature of the sizing material is kept at the flowing state temperature of the sizing material, and the sizing material in the shunt channel is injected into a next mould product after one-time pouring is completed; a heat insulation plate is arranged between the heating plate and the upper die plate, so that the heating temperature of the heating plate is prevented from influencing the molding of parts in the die cavity.

Description

Cold runner structure

Technical Field

The utility model belongs to the technical field of injection mold, in particular to cold runner structure.

Background

The cold runner refers to a portion between the mold inlet and the product gate. The cold runner has the advantages of being easy to use and capable of well meeting certain aesthetic requirements. The runner is used as a part of a molding material, but does not belong to a product, and some injection molding materials are not recyclable and are treated as waste materials after being separated from the product. Therefore, when designing the mold, the filling effect is considered, and how to shorten and reduce the runner to save materials is considered. But in the present of mechanized and large-scale production, the method cannot form only one product by one-time glue injection through one glue injection machine nozzle; in the prior art, the grooves on the lower plane of the upper runner plate and the grooves on the upper plane of the lower runner plate form the first layer of sub-runners, so that the shunting is realized, and the problems of poor sealing performance and material waste are serious. Therefore, it is necessary to design a cold runner structure having a heat preservation function for completing the flow distribution from the nozzle of the glue injector to the cold runners of the cavity.

Disclosure of Invention

In order to overcome the problem in the background art, the utility model provides a accomplish the reposition of redundant personnel and have the cold runner structure of heat preservation function between each cold runner of die cavity from injecting glue machine nozzle, solved and utilized under the runner plate planar slot and the lower runner plate planar slot to constitute first layer subchannel among the prior art, lead to the poor and extravagant problem of material of sealing performance.

In order to achieve the above purpose, the utility model is realized by the following technical scheme: a cold runner structure mainly comprises an upper die holder, a glue injection sleeve, a heating plate, a runner, a glue opening sleeve, a heat insulation plate, an upper die plate, a lower die plate and a lower die holder; the bottom of the upper die base is provided with a heating plate, the glue injection sleeve penetrates through the upper die base and the heating plate, the glue injection sleeve penetrates through the middle of the upper die base, a shunting channel is arranged in the heating plate and is communicated with the glue injection sleeve, the bottom of the heating plate is provided with a heat insulation plate, the heat insulation plate is fixedly connected with the upper die plate, and the glue port sleeve is arranged in the heating plate, the heat insulation plate and the upper die plate and is used for communicating the shunting channel with the die cavity; the top of the lower die base is provided with a lower template, and the upper template and the lower template are matched and assembled to form a die cavity.

The number of the sub-runners is at least four, and the four sub-runners are communicated with the sub-runners through the material well.

The upper end of the rubber opening sleeve is provided with a head, the lower end of the rubber opening sleeve is provided with a neck, and a flange is arranged between the head and the neck, the head is embedded into the heating plate, a sealing ring is arranged at the assembly position of the top of the head and the heating plate, the flange is embedded into the heat insulation plate, the neck penetrates through the heat insulation plate and the upper template and is communicated with the die cavity through a tapered hole, and the sealing ring is arranged between the neck and the.

The utility model has the advantages that:

the utility model connects each shunt tube by the material well in the heating plate, realizes that one-time glue injection of a nozzle of the glue injection machine shunts to a plurality of die cavities; each shunt pipe completes shunting in the heating plate, so that the temperature of the sizing material is kept at the flowing state temperature of the sizing material, the sizing material in the shunt channel does not need to be cleaned after the primary pouring is finished, and the sizing material in the shunt channel is injected into the next mould product; a heat insulation plate is arranged between the heating plate and the upper die plate, so that the heating temperature of the heating plate is prevented from influencing the molding of parts in the die cavity; the utility model discloses can effectively improve production efficiency and reduce the waste of material.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a schematic view of the whole section of the utility model.

Fig. 3 is a perspective view of the material well and the flow dividing pipe of the present invention.

Fig. 4 is a schematic perspective view of the distribution of the sub-runners in the heating plate of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the following will explain in detail a preferred embodiment of the present invention with reference to the accompanying drawings to facilitate understanding of the skilled person.

The utility model discloses a cold runner structure, which mainly comprises an upper die base 1, a glue injection sleeve 2, a heating plate 3, a runner 4, a glue opening sleeve 5, a heat insulation plate 6, an upper die plate 7, a lower die plate 8 and a lower die base 9; the number of the sub-runners 4 is at least four, and the four sub-runners 4 are communicated with the sub-runners 4 through a material well 31; the upper end of the rubber port sleeve 5 is provided with a head part 51, the lower end of the rubber port sleeve is provided with a neck part 53, a flange 52 is arranged between the head part 51 and the neck part 53, the head part 51 is embedded into the heating plate 3, a sealing ring is arranged at the assembly part of the top part of the head part 51 and the heating plate 3, the flange 52 is embedded into the heat insulation plate 6, the neck part 53 penetrates through the heat insulation plate 6 and the upper template 7 and is communicated with the mold cavity 71 through a tapered hole 54, and the sealing ring is arranged between; the material wells 31 are connected with the shunt pipes 4 in the heating plate 3, so that one-time glue injection and shunt of a nozzle of the glue injection machine to a plurality of die cavities 71 is realized, and the production efficiency can be effectively improved; the material well 31 is arranged, so that the shunting effect can be improved, and the wave breaking marks of products can be avoided; the use of tapered holes 54 facilitates demolding of the finished product.

The bottom of the upper die base 1 is provided with a heating plate 3, the glue injection sleeve 2 penetrates through the upper die base 1 and the heating plate 3, the glue injection sleeve 2 penetrates through the middle of the upper die base 1, a runner 4 is arranged in the heating plate 3, the runner 4 is communicated with the glue injection sleeve 2, the bottom of the heating plate 3 is provided with a heat insulation plate 6, the heat insulation plate 6 is fixedly connected with an upper die plate 7, and the glue opening sleeve 5 is arranged in the heating plate 3, the heat insulation plate 6 and the upper die plate 7 to communicate the runner 4 with a die cavity 71; the top of the lower die holder 9 is provided with a lower template 8, and the upper template 7 and the lower template 8 are matched and assembled to form a die cavity 71. The runner structure from top to bottom is sequentially provided with a glue injection sleeve 2, a material well 31, a sub-runner 4 and a glue opening sleeve 5; each shunt pipe 4 completes shunting in the heating plate 3, so that the temperature of the sizing material is kept at the flowing state temperature of the sizing material, the sizing material in the shunt passage 4 does not need to be cleaned after one-time pouring is completed, the sizing material in the shunt passage 4 is injected into the next mould product, and the waste of materials can be effectively reduced; a heat insulation plate 6 is arranged between the heating plate 3 and the upper template 7, so that the heating temperature of the heating plate 3 is prevented from influencing the molding of parts in the mold cavity 71.

The working process is as follows: the mold is assembled according to requirements, after the heating plate 3 is preheated, a nozzle of the glue injector is in butt joint with the glue injection sleeve 2, plastic injected from the nozzle of the glue injector flows to the material well 31 through the glue injection sleeve 2, split flow is formed in the material well 31 towards each runner, the plastic reaches the mold cavity 71 through the glue opening sleeve 5, the heating plate 3 keeps the temperature of the plastic runner in the runner 3, the heat insulation plate 6 can effectively prevent the heating temperature of the heating plate 3 from influencing the molding of parts in the mold cavity 71, after the plastic in the mold cavity 71 is molded, a fastener between the upper mold base 1 and the lower mold base 9 is removed, the lower mold base 8 is withdrawn from a position matched with the upper mold plate 7, and a finished product is taken out. The plastic cement in the sub-runner 4 which keeps the flowing state is injected into the next injection molding cavity.

The utility model connects each shunt tube 4 by the material well 31 in the heating plate 3, realizes that one-time glue injection of a glue injection machine nozzle is shunted to a plurality of die cavities 71; each shunt pipe 4 completes shunting in the heating plate 3, so that the temperature of the sizing material is kept at the flowing state temperature of the sizing material, the sizing material in the shunt passage 4 does not need to be cleaned after the primary pouring is finished, and the sizing material in the shunt passage 4 is injected into the next mould product; a heat insulation plate 6 is arranged between the heating plate 3 and the upper template 7, so that the heating temperature of the heating plate 3 is prevented from influencing the molding of parts in the mold cavity 71; the utility model discloses can effectively improve production efficiency and reduce the waste of material.

Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.

Claims

1. A cold runner structure, characterized by: the cold runner structure comprises an upper die holder (1), a glue injection sleeve (2), a heating plate (3), a sub-runner (4), a glue opening sleeve (5), a heat insulation plate (6), an upper template (7), a lower template (8) and a lower die holder (9); the hot plate (3) is installed at the bottom of the upper die base (1), the glue injection sleeve (2) penetrates through the upper die base (1) and the hot plate (3), the glue injection sleeve (2) penetrates through the middle of the upper die base (1), a shunt channel (4) is arranged in the hot plate (3), the shunt channel (4) is communicated with the glue injection sleeve (2), a heat insulation plate (6) is arranged at the bottom of the hot plate (3), the heat insulation plate (6) is fixedly connected with an upper template (7), the glue opening sleeve (5) is installed in the hot plate (3), the heat insulation plate (6) and the upper template (7), and the shunt channel (4) is communicated with the die cavity (71); the top of the lower die holder (9) is provided with a lower template (8), and the upper template (7) and the lower template (8) are matched and assembled to form a die cavity (71).

2. The cold runner structure of claim 1, wherein: the number of the sub-runners (4) is at least four, and the four sub-runners (4) are communicated with the sub-runners (4) through a material well (31).

3. The cold runner structure of claim 1, wherein: glue mouthful cover (5) upper end be equipped with head (51), the lower extreme is equipped with neck (53), be equipped with flange (52) between head (51) and neck (53), head (51) are embedded into hot plate (3), the top of head (51) is equipped with the sealing washer with hot plate (3) assembly department, flange (52) are embedded into heat insulating board (6), neck (53) penetrate heat insulating board (6) and cope match-plate pattern (7), communicate through bell mouth (54) and die cavity (71), be equipped with the sealing washer between neck (53) and cope match-plate pattern (7).