CN214982869U

CN214982869U - Sprue channel opening structure of injection mold

Info

Publication number: CN214982869U
Application number: CN202120030335.3U
Authority: CN
Inventors: 王祥敦
Original assignee: Suzhou Xiangyingsheng Precision Industry Co ltd
Current assignee: Suzhou Xiangyingsheng Precision Industry Co ltd
Priority date: 2021-01-07
Filing date: 2021-01-07
Publication date: 2021-12-03
Anticipated expiration: 2031-01-07

Abstract

The utility model discloses an injection mold waters a mouthful structure relates to injection mold technical field, and the mouth structure of watering for solving current injection mold is single runner, and high low all around in the middle of when moulding plastics leads to the injection molding not full easily, the problem of the circumstances such as bubble, space appears. The inside of upper die base is provided with the integrative piece of mouth of watering, the below of the integrative piece of mouth of watering is provided with the die cavity, the upper end of the integrative piece of mouth of watering is provided with the mouth of moulding plastics, the inside of the integrative piece of mouth of watering is provided with the reposition of redundant personnel chamber, and the reposition of redundant personnel chamber is linked together with the mouth of moulding plastics, the intermediate position department of the integrative lower surface of mouth of watering is provided with back taper center runner, all be provided with direct current side runner around the integrative piece lower surface of mouth of watering, and direct current side runner is provided with four.

Description

Sprue channel opening structure of injection mold

Technical Field

The utility model relates to an injection mold technical field specifically is injection mold gate opening structure.

Background

Injection molding, also known as injection molding, is a method of molding by injection and molding. The injection molding method has the advantages of high production speed, high efficiency, automation of operation, various colors, various shapes from simple to complex, small sizes, accurate product size, easy replacement of products, capability of forming products with complex shapes, and suitability for the molding processing fields of mass production, products with complex shapes and the like. Stirring the completely molten plastic material by a screw at a certain temperature, injecting the plastic material into a mold cavity by high pressure, and cooling and solidifying to obtain a molded product. The method is suitable for mass production of parts with complex shapes, and is one of important processing methods.

However, the pouring gate structure of the existing injection mold is a single runner, and the middle part is high and the periphery is low during injection molding, so that the injection molding piece is easily unsaturated, and the conditions of bubbles, gaps and the like occur; therefore, the existing requirements are not met, and the sprue channel structure of the injection mold is provided for the requirements.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an injection mold waters a mouthful structure to the current injection mold's that provides in solving above-mentioned background art waters a mouthful structure and be single runner, high low all around in the middle of when moulding plastics, leads to the injection molding not full easily, the problem of the condition such as bubble, space appears.

In order to achieve the above object, the utility model provides a following technical scheme: injection mold waters a mouthful structure, including the upper die base, the inside of upper die base is provided with waters a mouthful integrative piece, the below of watering a mouthful integrative piece is provided with the die cavity, the upper end of watering a mouthful integrative piece is provided with the mouth of moulding plastics, the inside of watering a mouthful integrative piece is provided with the reposition of redundant personnel chamber, and the reposition of redundant personnel chamber is linked together with the mouth of moulding plastics, the intermediate position department of watering a mouthful integrative piece lower surface is provided with back taper center runner, all be provided with direct current side runner around watering a mouthful integrative piece lower surface, and direct current side runner is provided with four.

Preferably, the inverted cone-shaped central flow passage and the direct-current side flow passage are both communicated with the flow dividing cavity.

Preferably, a drainage ramp is arranged on the inner wall of the diversion cavity, and the drainage ramp and the diversion cavity are of an integrated structure.

Preferably, all be provided with the internal thread lug all around of pouring gate integrative piece upper surface, and the internal thread lug is provided with four, be provided with the constant head tank on the inner wall of upper die base, and the constant head tank is provided with four, the integrative piece of pouring gate passes through the internal thread lug and is connected with the constant head tank block on the upper die base.

Preferably, the internal thread projection is in threaded connection with the positioning groove through a screw.

Preferably, the inner wall of the pouring gate integrated piece is provided with a polytetrafluoroethylene coating.

Preferably, the periphery of the injection molding opening is provided with four mounting holes.

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

1. the utility model discloses an inside at the integrative piece of mouth of watering sets up the reposition of redundant personnel chamber, and the lower extreme and a center runner and four side runners intercommunication in reposition of redundant personnel chamber, and when moulding plastics, partial stream material can flow to direct current side runner all around under the drainage ramp effect, realizes the reposition of redundant personnel to high, the low condition all around in the middle of the material when avoiding moulding plastics improves the quality of moulding plastics of product.

2. The central flow channel is arranged to be inverted conical due to the fact that the flowing materials are close to the central flow channel after entering, the four peripheral side flow channels are arranged to be direct-current-shaped, the flow speed of the central flow channel can be reduced, the material injection speed of the central flow channel is close to that of the peripheral side flow channels, and the flowing materials can fill the die cavity more uniformly.

3. Through set up the mouth of watering to detachable integrative piece, and pass through screw threaded connection with the upper die base, after finishing moulding plastics, can lift the screw of junction off, make the upper die base and the integrative piece separation of the mouth of watering, the convenient washing.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic bottom structure of the present invention;

FIG. 3 is a partial enlarged view of the point A of the present invention;

in the figure: 1. an upper die holder; 2. a sprue gate integral piece; 3. an injection molding port; 4. positioning a groove; 5. an internal thread projection; 6. a screw; 7. a shunting cavity; 8. a drainage ramp; 9. an inverted conical central flow channel; 10. a direct current side runner; 11. an upper mold cavity; 12. mounting holes; 13. and (3) coating polytetrafluoroethylene.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, the present invention provides an embodiment: sprue channel opening structure of injection mold, including upper die base 1, the inside of upper die base 1 is provided with a sprue gate integrated piece 2, the below of sprue gate integrated piece 2 is provided with die cavity 11, the upper end of sprue gate integrated piece 2 is provided with mouth 3 of moulding plastics, the inside of sprue gate integrated piece 2 is provided with reposition of redundant personnel chamber 7, and reposition of redundant personnel chamber 7 is linked together with mouth 3 of moulding plastics, the intermediate position department of sprue gate integrated piece 2 lower surface is provided with back taper center runner 9, all be provided with direct current side runner 10 around the sprue gate integrated piece 2 lower surface, and direct current side runner 10 is provided with four.

Furthermore, the inverted cone-shaped central runner 9 and the direct-current side runner 10 are both communicated with the flow dividing cavity 7, and when the injection molding is carried out, the flow is close to the central runner, so that the inverted cone-shaped central runner is arranged, and the four side runners on the periphery are arranged into the direct-current shapes, so that the flow speed of the central runner can be reduced, the injection speed of the central runner is close to that of the side runners on the periphery, and the flow can be uniformly filled in the mold cavity.

Further, be provided with drainage ramp 8 on the inner wall of reposition of redundant personnel chamber 7, and drainage ramp 8 and reposition of redundant personnel chamber 7 structure as an organic whole, drainage ramp 8 is the slope form, can lead the flow material to direct current side runner 10 all around, avoids its stagnation to cause the jam in reposition of redundant personnel chamber 7.

Further, all be provided with internal thread lug 5 around the integrative 2 upper surfaces of mouthful of watering, and internal thread lug 5 is provided with four, is provided with constant head tank 4 on the inner wall of upper die base 1, and constant head tank 4 is provided with four, waters mouthful integrative 2 and is connected through internal thread lug 5 and constant head tank 4 block on the upper die base 1, has realized preliminary location, makes things convenient for follow-up threaded connection.

Further, the internal thread lug 5 is in threaded connection with the positioning groove 4 through the screw 6, the connection strength of the upper die base 1 and the pouring gate integrated piece 2 is guaranteed through threaded connection, the dismounting and the mounting are simple, and the pouring gate integrated piece 2 is conveniently dismounted and cleaned after the injection molding is finished.

Further, the inner wall of the pouring gate integrated piece 2 is provided with the polytetrafluoroethylene coating 13, the polytetrafluoroethylene coating 13 is non-sticky to the coating and has good self-lubricating property, the polytetrafluoroethylene coating is arranged on the inner wall of the pouring gate integrated piece 2, the blocking condition of the flow can be effectively relieved, the highest temperature of injection molding is 240 ℃, the polytetrafluoroethylene coating 13 can be continuously used in an environment of 260 ℃, the highest temperature of the polytetrafluoroethylene coating can be over 300 ℃, and therefore the long-acting effect can be achieved without being influenced by high temperature.

Further, all be provided with mounting hole 12 around mouthful 3 of moulding plastics, and mounting hole 12 is provided with four, and mounting hole 12 is used for the aircraft nose butt joint installation with the injection molding machine, realizes accurate notes material.

The working principle is as follows: when in use, the injection port 3 of the upper die holder 1 is butted with the machine head of an injection molding machine, the machine head leads the flow material into the diversion cavity 7, the central position of the diversion cavity 7 is an inverted cone-shaped central flow passage 9, the periphery is a direct current side flow passage 10, when in feeding, part of the flow material can flow to the peripheral direct current side flow passage 10 under the action of the drainage ramp 8 to realize diversion, thereby avoiding the conditions of high middle and low periphery of the material during injection molding, the flow material is arranged to be inverted cone-shaped because the flow material is close to the central flow passage, the four peripheral side flow passages are arranged to be direct current, the flow speed of the central flow passage can be reduced, the injection speed of the flow passage is close to the peripheral side flow passages, the flow material can more uniformly fill a die cavity, the inner wall of the pouring port integrated piece 2 is provided with a polytetrafluoroethylene coating 13, the polytetrafluoroethylene coating 13 is not sticky to the coating, has better self-lubricating property, and is arranged on the inner wall of the pouring port integrated piece 2, the situation that the material that can effectively alleviate blockked up is moulded plastics and is accomplished the back, can lift off the screw 6 of junction, makes upper die base 1 and the integrative 2 separation of pouring gate mouth, convenient washing.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. Injection mold gate mouth structure, including upper die base (1), its characterized in that: the inside of upper die base (1) is provided with runner mouth integrative piece (2), the below of runner mouth integrative piece (2) is provided with die cavity (11), the upper end of runner mouth integrative piece (2) is provided with mouthful (3) of moulding plastics, the inside of runner mouth integrative piece (2) is provided with reposition of redundant personnel chamber (7), and reposition of redundant personnel chamber (7) and the mouth (3) of moulding plastics are linked together, the intermediate position department of the integrative piece of runner mouth (2) lower surface of runner is provided with back taper center runner (9), all be provided with direct current side runner (10) around the lower surface of runner mouth integrative piece (2), and direct current side runner (10) are provided with four.

2. The injection mold runner opening structure of claim 1, wherein: the inverted cone-shaped central flow passage (9) and the direct-current side flow passage (10) are communicated with the diversion cavity (7).

3. The injection mold runner opening structure of claim 1, wherein: the inner wall of the diversion cavity (7) is provided with a drainage ramp (8), and the drainage ramp (8) and the diversion cavity (7) are of an integrated structure.

4. The injection mold runner opening structure of claim 1, wherein: all be provided with internal thread lug (5) around watering mouthful integrative piece (2) upper surface, and internal thread lug (5) are provided with four, be provided with constant head tank (4) on the inner wall of upper die base (1), and constant head tank (4) are provided with four, it is connected with constant head tank (4) block on upper die base (1) through internal thread lug (5) to water mouthful integrative piece (2).

5. The injection mold runner opening structure of claim 4, wherein: the internal thread bump (5) is in threaded connection with the positioning groove (4) through a screw (6).

6. The injection mold runner opening structure of claim 1, wherein: and a polytetrafluoroethylene coating (13) is arranged on the inner wall of the pouring gate integrated piece (2).

7. The injection mold runner opening structure of claim 1, wherein: the periphery of the injection molding opening (3) is provided with four mounting holes (12), and the number of the mounting holes (12) is four.