CN213382759U

CN213382759U - Bump perforation insert structure

Info

Publication number: CN213382759U
Application number: CN202021854164.8U
Authority: CN
Inventors: 王浩
Original assignee: Shenzhen Dongchuang Technology Co Ltd
Current assignee: Shenzhen Dongchuang Technology Co Ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2021-06-08
Anticipated expiration: 2030-08-28

Abstract

The utility model relates to a bump perforation mold insert structure. The insert structure comprises a movable insert arranged in the lower die, a spring and an upper boss arranged on the upper die and corresponding to the insert, the insert penetrates through the lower die, the top end of the insert penetrates into the cavity, the spring is arranged at the bottom end of the insert and is used for applying pressure to the insert, and the direction of the pressure applied by the spring is consistent with the length direction of the insert; after the mold is closed, the top lug and the top end of the insert abut against each other and the top lug generates downward pressure on the insert. The utility model discloses set the mold insert to movable, have the spring to exert continuous pressure to it, when moulding plastics, the runner advances gluey pressure can be alleviated and the pressure release by the mold insert of elasticity activity, can also play carminative effect, consequently can reduce the probability that quality problems appears, improves yields and product quality stability, has also improved mold insert working life simultaneously.

Description

Bump perforation insert structure

Technical Field

The utility model relates to an injection mold especially relates to a bump perforation mold insert structure.

Background

Injection molding is a method for producing and molding industrial products. The products are generally produced by rubber injection molding and plastic injection molding. The injection molding can be classified into injection molding and die casting. An injection molding machine (an injection machine or an injection molding machine for short) is a main molding device for making thermoplastic plastics or thermosetting materials into plastic products with various shapes by using a plastic molding die. Injection molding is accomplished by an injection molding machine and a mold. In the process of injection molding, the quality problem is easily caused at the position of a collision perforation, which is close to a sprue, of a plurality of plastic parts due to the large glue inlet pressure, and the improvement is needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's above defect, and provide a bump perforation mold insert structure, reduce from bumping the pressure that the perforation receives of the more close position of runner, reduce the quality problems probability of appearing, improve the yields.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a bump-punch insert structure comprises a movable insert arranged in a lower die, a spring and an upper boss arranged on an upper die and corresponding to the insert, wherein the insert penetrates through the lower die, the top end of the insert penetrates into a cavity, the spring is arranged at the bottom end of the insert and is used for applying pressure to the insert, and the direction of the pressure applied by the spring is consistent with the length direction of the insert; after the mold is closed, the top lug and the top end of the insert abut against each other and the top lug generates downward pressure on the insert.

The outer diameter of the end of the bottom end of the insert is larger than the diameter of the insert body, a step hole is formed in the lower die, the end of the bottom end of the insert is placed in the step hole, and when the insert is not closed, the spring pushes the end to be tightly attached to the bottom surface of the step hole.

The insert structure is used for forming a collision perforation close to the sprue.

The tip of the insert penetrates into the cavity and exceeds the level of the parting surface of the lower die.

The height of the upper boss does not exceed the height of the parting surface of the upper die.

Compared with the prior art, the utility model beneficial effect be: set the mold insert to the activity, have the spring to exert continuous pressure to it, when moulding plastics, the runner advances gluey pressure can be alleviated and the pressure release by the mold insert of elasticity activity, can also play carminative effect, consequently can reduce the probability that quality problems appears, improves yields and product quality stability, has also improved mold insert working life simultaneously.

Drawings

Fig. 1 is a cross-sectional view of the insert structure of the present invention when the mold is not closed.

Fig. 2 is a cross-sectional view of the insert structure of the present invention during mold closing.

It should be noted that, the products shown in the above views are all appropriately reduced/enlarged according to the size of the drawing and the clear view, and the size of the products shown in the views is not limited.

Detailed Description

In order to more fully understand the technical content of the present invention, the technical solution of the present invention will be further described and explained with reference to the specific embodiments.

The embodiment of the utility model provides a mold insert structure for injection moulding bumps hole position, its structure is as shown in fig. 1, 2. The insert structure is used for punch forming near the gate 121. Other impingement holes located relatively far from the gate 121 may be used directly with conventional inserts.

As shown in fig. 1 and 2, the insert structure includes a movable insert 21 provided in the lower die 12, a spring 22, and an upper boss 23 provided on the upper die 11 corresponding to the insert 21. The height of the upper boss 23 does not exceed the height of the parting surface of the upper die 11. Insert 21 extends through lower die 12 and the top of insert 21 penetrates into cavity 13. The top end of the insert 21 penetrates into the cavity 13 and exceeds the parting plane height of the lower die 12. The lower die 12 is provided with a stepped hole 122, the outer diameter of the end 211 of the bottom end of the insert 21 is larger than the diameter of the body of the insert 21, and the end 211 of the bottom end of the insert 21 is placed in the stepped hole 122. The spring 22 is arranged at the bottom end of the insert 21 and is abutted against the bottom end of the insert 21. The spring 22 is used for applying upward pressure to the insert 21, and the direction of the pressure applied by the spring 22 is consistent with the length direction of the insert 21. When the mold is not closed, as shown in fig. 1, the spring 22 pushes the tip 211 to be closely attached to the bottom surface of the stepped hole 122. After the mold is closed, as shown in fig. 2, the upper boss 23 and the top end of the insert 21 abut against each other and the upper boss 23 exerts a downward force on the insert 21, and the spring 22 is further compressed. After the mold is closed, the molding compound in the gate 121 flows into the cavity 13, and the molding compound pressure at the insert 21 can be relieved by the insert 21 and the spring 22.

The utility model discloses set mold insert 21 to the activity, have spring 22 to exert continuous pressure to it, when moulding plastics, runner 121 advances gluey pressure can be alleviated and the pressure release by the mold insert 21 of elasticity activity, can also play carminative effect, consequently can reduce the probability that quality problems appears, improves yields and product quality stability, has also improved mold insert working life simultaneously.

In the description of the present invention, it should be noted that the terms "upper", "lower", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

The above description is only for the purpose of illustrating the technical content of the present invention by way of example, so as to facilitate the understanding of the reader, but does not represent that the embodiments of the present invention are limited thereto, and any technical extension or re-creation according to the present invention is protected by the present invention.

Claims

1. A collision perforation insert structure is characterized by comprising a movable insert arranged in a lower die, a spring and an upper boss arranged on an upper die and corresponding to the insert, wherein the insert penetrates through the lower die, the top end of the insert penetrates into a cavity, the spring is arranged at the bottom end of the insert and is used for applying pressure to the insert, and the direction of the pressure applied by the spring is consistent with the length direction of the insert; after the mold is closed, the top bosses and the top ends of the mold inserts are abutted against each other, and the upper bosses generate downward pressure on the mold inserts.

2. The pop-through insert structure of claim 1, wherein the outer diameter of the tip of the bottom end of the insert is larger than the diameter of the insert body, the lower mold is provided with a stepped hole, the tip of the bottom end of the insert is placed in the stepped hole, and the spring pushes the tip to be closely attached to the bottom surface of the stepped hole when the mold is not closed.

3. The pop-through insert structure of claim 1, wherein the insert structure is used for pop-through molding near a gate.

4. The pop-through insert structure of claim 1, wherein the insert tip penetrates into the mold cavity and exceeds the lower mold parting surface height.

5. The pop-through insert structure of claim 4, wherein the upper boss height does not exceed the parting plane height of the upper mold.