CN216465927U

CN216465927U - Sprue separating structure

Info

Publication number: CN216465927U
Application number: CN202120893764.3U
Authority: CN
Inventors: 孙宽; 马胜; 饶攀
Original assignee: Linhai Weixing New Building Materials Co Ltd
Current assignee: Zhejiang Weixing New Building Materials Co Ltd
Priority date: 2021-04-28
Filing date: 2021-04-28
Publication date: 2022-05-10
Anticipated expiration: 2031-04-28

Abstract

The utility model discloses a sprue separating structure, which belongs to the technical field of a sprue of an injection mold, and comprises a submarine runner and a side runner, wherein the submarine runner is of a circular truncated cone structure, one end of the submarine runner is sealed, the other end of the submarine runner is connected with the runner, the side runner is arranged on the side surface of the submarine runner, the side runner is connected with a product mold cavity, the included angle formed by the central axis of the submarine runner and the horizontal direction is 30-45 degrees, the angle formed by a generatrix of the circular truncated cone structure and a rotating shaft is 6-10 degrees, and the diameter of the sealed end of the circular truncated cone structure is 1.8-3 mm. The utility model combines the characteristics of the existing submarine gate and the side gate, the side gate is arranged on the submarine flow channel, the purpose of separating the gates of the low-cavity product (< 5 mm) die is well realized, the die manufacturing cost is low, the production efficiency is high, the product competitiveness is improved, and the utility model has practical significance and good application prospect.

Description

Sprue separating structure

Technical Field

The utility model belongs to the technical field of gates of injection molds, and particularly relates to a gate separation structure.

Background

At present, the most used pouring gate separation structure on the injection mold is a submarine pouring gate structure, the submarine pouring gate is also called a tunnel pouring gate and is evolved from a point pouring gate, the defect that the point pouring gate mold is complex is overcome, and the advantage of the point pouring gate is maintained. And the structure is simple relative to the mould, the manufacturing cost is low, and the sprue separating structure is the most widely applied sprue separating structure at present. However, due to the limitation of the gate structure of the existing submarine gate (the submarine gate is generally in a cone shape and forms a certain angle with the cavity, usually 20-45 °), the cavity of the product must meet a certain height to ensure the smooth demolding of the submarine gate and the strength of the gate (especially for hard plastics). Aiming at the problem, no direct surface latency technology for effectively solving the problem exists in China at present.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, an object of the present invention is to provide a gate separating structure.

In order to achieve the purpose, the following technical scheme is provided:

the utility model provides a runner isolating construction, locates among the injection mold, including formula of hiding runner and side gate, the side gate is seted up on the formula of hiding runner, and the side gate is connected with the product die cavity, and the formula of hiding runner is connected with the runner.

Furthermore, the latent runner is of a circular truncated cone structure, one end of the latent runner is sealed, the other end of the latent runner is connected with the runner, and a side gate is arranged on the side surface of the latent runner.

Furthermore, the angle range of the included angle formed between the central axis of the latent runner and the horizontal direction is 30-45 degrees.

Furthermore, the angle between the generatrix of the truncated cone structure and the rotating shaft is 6-10 DEG

Furthermore, the latent runner, the side gate, the product mold cavity and the runner are formed by combining concave molds on an upper mold cavity and a lower mold cavity of the injection mold.

Furthermore, a runner of the lower cavity is provided with a thimble hole, the runner is divided into a main runner and a branch runner, and the branch runner is connected with the latent runner.

Furthermore, the sealing end of the round platform type structure is a small round surface, and the diameter of the sealing end is 1.8-3 mm.

The size of the submarine runner and the angle formed by the submarine runner and the product cavity directly influence the size of the side gate.

Compared with the prior art, the utility model has the beneficial effects that: the characteristics of current formula runner of hiding and side runner have been combined, set up the side runner on the formula runner of hiding, fine realization low die cavity class goods (< 5 mm) the runner separation purpose of mould, and mould low in manufacturing cost, production efficiency is high, has promoted product competitiveness, has realistic meaning and good application prospect.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a cross-sectional view of an injection mold having the present invention;

fig. 3 is an open view of an injection mold having the present invention.

In the figure: 1-latent flow channel; 2-side gate; 3-a product mold cavity; 4-a flow channel; 5-upper cavity; 6-lower cavity; 7-thimble hole.

Detailed Description

The utility model will be further described with reference to the drawings attached to the description, but the scope of the utility model is not limited thereto.

As shown in fig. 1, two sides of the runner 4 are respectively connected with a submarine runner 1 with a truncated cone structure, a side gate 2 is arranged on the side surface of the submarine runner 1, and the side gate 2 is connected with a product cavity 3; the ejector pin is located below the flow channel 4, the injection-molded latent flow channel 1, the flow channel 4 and a product can be ejected through the ejector flow channel 4, and then the latent flow channel 1 is separated from the product, and the product is easy to break because the connecting position of the product and the latent flow channel 1 is small.

As shown in fig. 2 and 3, the latent runner 1, the side gate 2, the product mold cavity 3 and the runner 4 are formed by combining a female mold on an upper mold cavity 5 and a lower mold cavity 6 of an injection mold, the runner 4 comprises a main runner and four branch runners, each branch runner is respectively connected with two latent runners 1, a plurality of products are produced at one time, the runner 4 of the lower mold cavity 6 is uniformly provided with thimble holes 7, the lower ends of the thimbles are fixedly connected with a thimble plate, materials enter from a material inlet of the injection mold, then flows to the main runner, the main runner is divided to the branch runners, the branch runners flow to the hidden runners 1, then flows into a product mold cavity 3 from a side sprue 2, is molded by injection, is opened and passes through an ejector retainer plate, thereby ejecting the thimble, realizing ejection of the injection molding runner 4, the latent runner 1 and the product, and then separating the product from the injection molding latent runner 1.

Claims

1. The utility model provides a runner isolating construction, locates among the injection mold, its characterized in that, including formula of hiding runner (1) and side runner (2), side runner (2) are seted up on formula of hiding runner (1), and side runner (2) are connected with product die cavity (3), and formula of hiding runner (1) is connected with runner (4).

2. A gate split structure according to claim 1, characterized in that the hidden runner (1) is a truncated cone structure with one end sealed and the other end connected to the runner (4), and the side gate (2) is opened on the side surface.

3. A gate split structure according to claim 2, wherein the angle formed by the central axis of the submerged entry nozzle (1) and the horizontal direction is in the range of 30 to 45 °.

4. The gate separating structure according to claim 2, wherein the angle of the generatrix of the truncated cone-shaped structure with the rotation axis is 6 to 10 °.

5. A gate split structure according to claim 1, characterized in that said submarine gate (1), side gates (2), product cavities (3) and gates (4) are formed by merging cavities in the upper cavity (5) and lower cavity (6) of the injection mold.

6. A gate separating structure according to claim 5, characterized in that the runner (4) of the lower cavity (6) is provided with a thimble hole (7), and the runner (4) is divided into a main runner and a branch runner, and the branch runner is connected with the hidden runner (1).

7. The gate split structure as claimed in claim 2, wherein the sealing end of the truncated cone-shaped structure is a small circular surface having a diameter of 1.8 to 3 mm.