CN218700995U

CN218700995U - Device for demoulding injection molding product

Info

Publication number: CN218700995U
Application number: CN202223044529.2U
Authority: CN
Inventors: 朱春良; 陆鑫丽
Original assignee: Hangzhou Kejie Model Co ltd
Current assignee: Hangzhou Kejie Model Co ltd
Priority date: 2022-11-16
Filing date: 2022-11-16
Publication date: 2023-03-24
Anticipated expiration: 2032-11-16

Abstract

The utility model discloses an injection mold technical field's a device of injection moulding product drawing of patterns adopts following technical scheme: including bottom plate, top mould and die block, install lift and stripper rod on the bottom plate, the lift is fixed in the lower surface of die block, the stripper rod top runs through in the inside of die block, the cavity is in being equipped with in the stripper rod inside, and one side of stripper rod is equipped with the forcing pipe with well cavity intercommunication. Through the lift control die block and move down, because the stripper bar is motionless, under the support of stripper bar, the die block realizes the separation with the shaping product the same with the ejector die, and the design can avoid the direct ejection of the injection moulding product of stripper bar to probably cause the circumstances that the shaping product damaged, realizes shaping product and stripper bar separation through the mode of blowing, compares in directly through blowing that the realization shaping product separates with whole die block more swiftly, and demoulding efficiency improves greatly.

Description

Device for demoulding injection molding product

Technical Field

The utility model belongs to the technical field of injection mold's technique and specifically relates to a device of injection moulding product drawing of patterns is related to.

Background

An injection mold is a tool for producing plastic products; and is also a tool for giving the plastic product complete structure and accurate dimension. Injection molding is a process used to mass produce parts of some complex shapes. Specifically, the plastic melted by heating is injected into a mold cavity from an injection molding machine at high pressure, and a formed product is obtained after cooling and solidification.

When the existing injection mold is used for demolding, a molded product is ejected out of the mold by mainly controlling the demolding rod, so that the demolding rod is easy to eject upwards to damage the product, the product is scrapped, the demolding module at the top end of the demolding rod is contacted with a melted raw material during injection molding, the top of the demolding rod is bonded with the product after the product is molded, and the product and the demolding rod need to be subjected to secondary demolding separation by means of external force after the product is ejected by the demolding rod, so that great inconvenience is caused.

SUMMERY OF THE UTILITY MODEL

This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section as well as in the abstract of the specification and the utility model name, some simplifications or omissions may be made to avoid obscuring the purpose of this section, the abstract of the specification and the utility model name, and such simplifications or omissions cannot be used to limit the scope of the invention.

In view of the above-mentioned problem of the device of the current injection moulding product drawing of patterns, provided the utility model discloses.

Therefore, the utility model aims at providing a device of injection moulding product drawing of patterns can avoid the direct injection moulding product ejecting condition that probably causes the molded products to damage of stripper bar, realizes molded products and stripper bar separation through the mode of blowing, and drawing of patterns efficiency improves greatly.

In order to solve the technical problem, the utility model provides a.

Optionally, a plurality of groups of guide posts are arranged on the bottom plate, and the top die and the bottom die are respectively sleeved on the upper portions and the lower portions of the plurality of groups of guide posts. By adopting the technical scheme, the accuracy of die assembly of the top die and the bottom die and the stability of die opening movement are ensured.

Optionally, the lifting member is fixed to the middle of the lower surface of the bottom die, and the plurality of demolding rods are uniformly distributed on the periphery of the lifting member. Through adopting above-mentioned technical scheme, the piece that goes up and down can drive the die block and move down, and can carry out the drawing of patterns to the shaping product under a plurality of stripper bars effect and support.

Optionally, the lifting piece is also mounted on the upper surface of the top die, and the lifting piece is an air cylinder. By adopting the technical scheme, the control cylinder can control the top die and the bottom die to move, so that die assembly, die opening and die stripping are realized.

Optionally, the top of the demolding rod is hermetically connected with a demolding module, and one end, far away from the pressurization pipe, of the hollow cavity is communicated with the demolding block. Through adopting above-mentioned technical scheme, the air that is injected into in order to increase the atmospheric pressure in the cavity by the pressurized tube, pressurized air gets into between product and the drawing of patterns piece top surface, helps product and drawing of patterns piece separation, prevents that the product adhesion is on taking off the module when the mould unloading.

Optionally, the pressure pipe and the demoulding rod are integrally formed, and the pressure pipe and the demoulding rod are of the same material structure. By adopting the technical scheme, the novel plastic bottle opener is convenient to use and simple to form.

Optionally, a plurality of ventholes are arranged on the upper surface of the demoulding block, and an expansion cavity is formed in the demoulding block. Through adopting above-mentioned technical scheme, the expansion chamber is used for transmitting the atmospheric pressure in the cavity to the venthole and blow the separation to the shaping product.

Optionally, the small diameter of the expansion cavity is larger than the diameter of the hollow cavity, and the arrangement range of the air outlet is located above the large diameter of the expansion cavity. Through adopting above-mentioned technical scheme, realize that the atmospheric pressure of well cavity disperses to every venthole, realize product and drawing of patterns piece quickly separating through many ventholes.

To sum up, the utility model discloses a following at least one beneficial effect:

1. the bottom die is controlled to move downwards by the lifting piece, and the bottom die is separated from a formed product by the same way as a top die under the support of the demoulding rod because the demoulding rod is not moved, so that the design can avoid the condition that the formed product is damaged due to the fact that the demoulding rod directly injects the formed product in an ejecting way.

2. The separation of the formed product and the demoulding rod is realized through a blowing mode, and compared with the mode that the separation of the formed product and the whole bottom die is realized through blowing directly, the demoulding efficiency is improved greatly.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

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

FIG. 2 is a schematic view of the structure of the mold-releasing rod of the present invention;

fig. 3 is a schematic view of the structure of the mold release block of the present invention.

Description of reference numerals: 1. a base plate; 2. carrying out top die; 3. bottom die; 4. a lifting member; 5. a stripper bar; 6. a pressurizing pipe; 7. a guide post; 8. a hollow cavity; 9. demoulding; 10. an air outlet; 11. the lumen is expanded.

Detailed Description

The present invention will be described in further detail with reference to the accompanying fig. 1-3.

Example one

Referring to fig. 1 and 2, the utility model discloses a device of injection moulding product drawing of patterns, including bottom plate 1, top mould 2 and die block 3, be equipped with multiunit guide post 7 on the bottom plate 1, top mould 2 and die block 3 overlap respectively and establish the upper portion and the lower part at multiunit guide post 7, guarantee top mould 2 and die block 3 and carry out the accuracy of compound die and the stability that the die sinking removed.

Install lift 4 and stripper bar 5 on the bottom plate 1, lift 4 is fixed in the lower surface of die block 3, and lift 4 is fixed in the lower surface middle part of

die block

3, and 5 equipartitions in the periphery of lift 4 of a plurality of stripper bars, lift 4 can drive die block 3 and move down, and can carry out the drawing of patterns to the shaping product under the effect of a plurality of stripper bars 5 and support. The top end of the demoulding rod 5 penetrates through the bottom die 3, the hollow cavity 8 is arranged inside the demoulding rod 5, the pressurizing pipe 6 communicated with the hollow cavity 8 is arranged on one side of the demoulding rod 5, air can be injected into the hollow cavity 8 through the pressurizing pipe 6, and the demoulding rod 5 and a formed product are separated through air pressure. The pressure pipe 6 and the demoulding rod 5 are integrally formed, and the pressure pipe 6 and the demoulding rod 5 are of the same material structure. The lifting piece 4 is also arranged on the upper surface of the top die 2, and the lifting piece 4 adopts a cylinder.

The working principle is as follows: when a product is injected, the control cylinder drives the bottom die 3 to move upwards, so that the demolding rod 5 moves into the bottom die 3, then the top die 2 is controlled to move downwards, after die assembly, a molding raw material is injected into the internal molding cavity through the injection port to perform injection molding, die opening is performed after product molding is completed, when die opening is performed, the top die 2 is controlled to move upwards, so that the top die 2 is separated from the molded product, then the bottom die 3 is driven by the control cylinder to move downwards, due to the fact that the demolding rod 5 is not moved, under the support of the demolding rod 5, the bottom die 3 is separated from the molded product as the top die 2, due to the design, the situation that the molded product is possibly damaged due to the fact that the demolding rod 5 directly ejects the injection molded product is ejected can be avoided, then after the molded product is separated from the bottom die 3, air is input into the pressurizing pipe 6 to increase the air pressure of the hollow cavity 8 in the demolding rod 5, pressurized air enters the molded product and the top surface of the demolding rod 5, the molded product is separated from the demolding rod 5, and the molded product is beneficial to separation from the demolding rod 5, and compared with the fact that the molded product is directly separated from the whole bottom die 3 through air blowing, the separation is quicker, and the demolding efficiency is greatly improved.

Example two

Referring to fig. 2 and 3, based on the same concept as that of the first embodiment, the device for demolding injection-molded products further comprises a demolding block 9 connected to the top of the demolding rod 5 in a sealing manner, one end of the hollow cavity 8, which is far away from the pressurization pipe 6, is communicated with the demolding block 9, the upper surface of the demolding block 9 is arranged in a plurality of air outlet holes 10, and an expansion cavity 11 is formed inside the demolding block 9. The expanding cavity 11 is used for transmitting air pressure in the hollow cavity 8 to the air outlet 10 to perform air blowing separation on a molded product, and the air outlet 10 can be arranged vertically or obliquely. The small caliber of the expansion cavity 11 is larger than the diameter of the hollow cavity 8, and the arrangement range of the air outlet 10 is located above the large caliber of the expansion cavity 11. The air pressure of the hollow cavity 8 is dispersed to each air outlet 10, and the product is quickly separated from the demolding block through the multiple air outlets 10.

Above is the preferred embodiment of the utility model, not limit according to this the utility model discloses a protection scope, the event: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a device of injection moulding product drawing of patterns, includes bottom plate (1), top mould (2) and die block (3), its characterized in that: install lifting member (4) and stripper rod (5) on bottom plate (1), lifting member (4) are fixed in the lower surface of die block (3), stripper rod (5) top is run through in the inside of die block (3), stripper rod (5) inside is equipped with well cavity (8), and one side of stripper rod (5) is equipped with and holds in the palm forcing pipe (6) of cavity (8) intercommunication.

2. An apparatus for demolding an injection molded product as claimed in claim 1, wherein: the bottom plate (1) is provided with a plurality of groups of guide posts (7), and the top die (2) and the bottom die (3) are respectively sleeved on the upper parts and the lower parts of the guide posts (7).

3. An apparatus for demolding an injection molded product according to claim 1 or 2, wherein: the lifting piece (4) is fixed in the middle of the lower surface of the bottom die (3), and the plurality of demolding rods (5) are uniformly distributed on the periphery of the lifting piece (4).

4. An apparatus for demolding an injection molded product, as claimed in claim 3, wherein: and the upper surface of the top die (2) is also provided with a lifting piece (4), and the lifting piece (4) adopts a cylinder.

5. An apparatus for demolding an injection molded product as claimed in claim 1, wherein: the top of the demolding rod (5) is hermetically connected with a demolding module (9), and one end, far away from the pressurizing pipe (6), of the hollow cavity (8) is communicated with the demolding block (9).

6. An apparatus for demolding an injection molded product as claimed in claim 1, wherein: the pressure pipe (6) and the demoulding rod (5) are integrally formed, and the pressure pipe (6) and the demoulding rod (5) are of the same material structure.

7. An apparatus for demolding an injection molded product as claimed in claim 5, wherein: the upper surface of the demoulding body (9) is distributed on a plurality of air outlet holes (10), and an expansion cavity (11) is formed in the demoulding body (9).

8. An apparatus for demolding an injection molded product as claimed in claim 7, wherein: the small caliber of the expansion cavity (11) is larger than the diameter of the hollow cavity (8), and the arrangement range of the air outlet holes (10) is located above the large caliber of the expansion cavity (11).