CN222832300U

CN222832300U - Secondary ejection demoulding structure

Info

Publication number: CN222832300U
Application number: CN202421568132.XU
Authority: CN
Inventors: 李桂明
Original assignee: Weigen Precision Machinery Suzhou Co ltd
Current assignee: Weigen Precision Machinery Suzhou Co ltd
Priority date: 2024-07-04
Filing date: 2024-07-04
Publication date: 2025-05-06
Anticipated expiration: 2034-07-04

Abstract

The utility model provides a secondary ejection demoulding structure which comprises a mould assembly, wherein an ejection assembly and a cooling assembly are arranged in the mould assembly, the ejection assembly comprises a first top plate, a first guide rod, a first spring, a first ejector rod, a second top plate, a second guide rod, a second spring and a second ejector rod, the inner side wall of the first top plate is symmetrically and slidingly connected with the first guide rod, and the outer side wall of the first guide rod is sleeved with the first spring. According to the utility model, the first ejector rod is driven to move through the first ejector plate to finish the die opening action, the second ejector rod is driven to move through the first ejector plate, the second ejector rod is utilized to eject the product, the product stress is ensured to be uniform during ejection, the product qualification rate is improved, cooling water is fed through the water inlet pipe to cool the insert needle, the material cooling speed near the insert needle is accelerated, meanwhile, the cooling water after heat exchange is cooled through the heat dissipation fins, the continuous cooling effect of the cooling water is improved, and the defect problem of the product near the insert needle is avoided.

Description

Secondary ejection demoulding structure

Technical Field

The utility model relates to a demolding structure, in particular to a secondary ejection demolding structure, and belongs to the technical field of injection molds.

Background

Injection molds play a key role in the injection molding process. Injection molding is a molding method of injection and molding, in which a molten plastic material is injected into a cavity of a mold under high pressure, and a molded article is obtained after cooling and solidification. The injection molding method has the advantages of high production speed, high efficiency, automation in operation, multiple colors and varieties, simplified and complex shapes, large size and small size, accurate product size, easy updating of the product and capability of forming a product with complex shape. The method is suitable for mass production of parts with complex shapes, and is one of important processing methods in the modern manufacturing industry.

After injection molding products are molded, demolding is needed through an ejection structure, the existing ejection demolding structure is easy to enable products to be stressed unevenly, product defects are easy to occur in areas with larger stress, meanwhile, for injection molds provided with insert pins, the temperature reduction speed of materials near the insert pins is low during ejection, deformation or fracture and other problems are easy to occur, and therefore the secondary ejection demolding structure is provided.

Disclosure of utility model

In view of the above, the present utility model provides a secondary ejection demolding structure to solve or alleviate the technical problems existing in the prior art, and at least provides a beneficial choice.

The technical scheme of the embodiment of the utility model is that the secondary ejection demoulding structure comprises a mould assembly, wherein an ejection assembly and a cooling assembly are arranged in the mould assembly, and the ejection assembly comprises a first top plate, a first guide rod, a first spring, a first ejector rod, a second top plate, a second guide rod, a second spring and a second ejector rod;

The inner side wall of the first top plate is symmetrically and slidingly connected with a first guide rod, the outer side wall of the first guide rod is sleeved with a first spring, the upper surface of the first top plate is symmetrically and fixedly connected with four first ejector rods, a second top plate is arranged above the first top plate, the inner side wall of the second top plate is symmetrically and slidingly connected with a second guide rod, the outer side wall of the second guide rod is sleeved with a second spring, and the upper surface of the second top plate is symmetrically and fixedly connected with four second ejector rods;

The cooling component comprises a water inlet pipe, an inlaid needle, a partition plate, a heat exchange pipe, a radiating fin and a water outlet pipe;

The heat exchange tube is characterized in that one end of the water inlet tube is communicated with an insert pin, the inner side wall of the insert pin is fixedly connected with a partition plate, two insert pins are arranged, the two insert pins are connected with each other through the heat exchange tube, the outer side wall of the heat exchange tube is uniformly and fixedly connected with radiating fins, and the insert pins are communicated with the water outlet tube.

It is further preferred that the die assembly comprises a lower die base and a lower die plate;

the top fixedly connected with lower bolster of die holder, first guide bar and second guide bar fixed connection are in the bottom of lower bolster, the bottom fixedly connected with stopper of second guide bar.

It is further preferable that the upper surface of the lower template is symmetrically provided with guide sleeves.

It is further preferable that a cavity is arranged on the upper surface of the lower template, and the insert pin is fixedly connected to the inner side wall of the cavity.

Further preferably, an upper template is arranged above the lower die holder.

It is further preferable that the top of the upper template is fixedly connected with an upper die holder.

It is further preferable that an injection molding opening is formed in the top of the upper die holder.

It is further preferable that the bottom of the upper template is symmetrically and fixedly connected with guide posts.

By adopting the technical scheme, the embodiment of the utility model has the following advantages:

1. According to the utility model, the first ejector rod is driven to move through the first top plate, so that the die opening action is completed, the second top plate is pushed to move through the first top plate, the second ejector rod is utilized to eject the product, the uniform stress of the product is ensured during ejection, and the product qualification rate is improved.

2. According to the utility model, the cooling water is fed through the water inlet pipe to cool the insert pin, so that the cooling speed of materials near the insert pin is increased, and meanwhile, the cooling water subjected to heat exchange is cooled by the radiating fins, so that the continuous cooling effect of the cooling water is improved, and the problem that products near the insert pin have defects is avoided.

The foregoing summary is for the purpose of the specification only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present utility model will become apparent by reference to the drawings and the following detailed description.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are necessary for the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a block diagram of the present utility model;

FIG. 2 is a split block diagram of the present utility model;

FIG. 3 is a block diagram of an ejector assembly of the present utility model;

FIG. 4 is a bottom view of the lower plate of the present utility model;

Fig. 5 is a view showing the internal structure of the insert according to the present utility model.

Reference numerals are 10, a mould assembly, 11, a lower mould base, 12, a lower mould plate, 13, a guide sleeve, 14, a mould cavity, 15, an upper mould base, 16, an injection port, 17, an upper mould plate, 18, a guide pillar, 20, an ejection assembly, 21, a first top plate, 22, a first guide rod, 23, a first spring, 24, a first ejector rod, 25, a second top plate, 26, a second guide rod, 27, a second spring, 28, a second ejector rod, 30, a cooling assembly, 31, a water inlet pipe, 32, an insert needle, 33, a partition plate, 34, a heat exchange pipe, 35, a radiating fin, 36 and a water outlet pipe.

Detailed Description

Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in various different ways without departing from the spirit or scope of the present utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.

Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to 5, the embodiment of the present utility model provides a secondary ejection demoulding structure, which comprises a mould assembly 10, wherein an ejection assembly 20 and a cooling assembly 30 are arranged inside the mould assembly 10, and the ejection assembly 20 comprises a first top plate 21, a first guide rod 22, a first spring 23, a first ejector rod 24, a second top plate 25, a second guide rod 26, a second spring 27 and a second ejector rod 28;

The inner side wall of the first top plate 21 is symmetrically and slidingly connected with a first guide rod 22, the outer side wall of the first guide rod 22 is sleeved with a first spring 23, the upper surface of the first top plate 21 is symmetrically and fixedly connected with four first ejector rods 24, a second top plate 25 is arranged above the first top plate 21, the inner side wall of the second top plate 25 is symmetrically and slidingly connected with a second guide rod 26, the outer side wall of the second guide rod 26 is sleeved with a second spring 27, the upper surface of the second top plate 25 is symmetrically and fixedly connected with four second ejector rods 28, and the springs are used for driving the top plate to reset so as to facilitate continuous die opening and closing actions;

the cooling assembly 30 comprises a water inlet pipe 31, an insert pin 32, a partition 33, a heat exchange pipe 34, a heat radiating fin 35 and a water outlet pipe 36;

One end of the water inlet pipe 31 is communicated with the insert pins 32, the partition plate 33 is fixedly connected to the inner side walls of the insert pins 32, two insert pins 32 are arranged, the heat exchange pipe 34 is arranged between the two insert pins 32, the outer side walls of the heat exchange pipe 34 are uniformly and fixedly connected with the radiating fins 35, the insert pins 32 are communicated with the water outlet pipe 36, cooling water is fed into one insert pin 32 through the water inlet pipe 31, after passing through a channel formed by the partition plate 33, the cooling water exchanges heat with materials, the material cooling speed is improved, the warmed cooling water enters the heat exchange pipe 34, heat is radiated through the radiating fins 35, heat exchange is carried out after the temperature is reduced, the cooled cooling water enters the insert pins 32 again, and the continuous cooling effect of the cooled water is improved.

In the embodiment, the die assembly 10 comprises a lower die holder 11 and a lower die plate 12;

The top fixedly connected with lower bolster 12 of die holder 11, first guide bar 22 and second guide bar 26 fixed connection are in the bottom of lower bolster 12, and the bottom fixedly connected with stopper of second guide bar 26, and the stopper is used for restricting the position of second roof 25.

In this embodiment, specifically, the upper surface of the lower die plate 12 is symmetrically provided with guide sleeves 13.

In this embodiment, specifically, the upper surface of the lower die plate 12 is provided with a cavity 14, the insert pin 32 is fixedly connected to the inner sidewall of the cavity 14, and the insert pin 32 is used for forming an upper hole of a product.

In the embodiment, specifically, an upper die plate 17 is arranged above the lower die holder 11, and a die core is arranged at the bottom of the upper die plate 17.

In this embodiment, specifically, the top of the upper die plate 17 is fixedly connected with an upper die holder 15.

In this embodiment, specifically, an injection port 16 is disposed at the top of the upper die holder 15, and a material is fed into the die cavity 14 through the injection port 16.

In the embodiment, specifically, the bottom of the upper template 17 is symmetrically and fixedly connected with a guide post 18, and the precision of die assembly is ensured by matching the guide post 18 with the guide sleeve 13.

When the mold is in operation, after the mold is closed, a material is sent into the cavity 14 through the injection molding opening 16 and is cooled and molded in the cavity 14, in the cooling process, cooling water is sent into one of the insert pins 32 through the water inlet pipe 31, after passing through a channel formed by the partition plate 33, the cooling water exchanges heat with the material, the material cooling speed is improved, the warmed cooling water enters the heat exchange pipe 34, heat is radiated through the heat radiating fins 35, after the temperature is reduced, the cooling water enters the other insert pin 32 for heat exchange, the cooling water after heat exchange is cooled through the heat radiating fins 35, the continuous cooling effect of the cooling water is improved, the defect problem of products near the insert pins 32 is further avoided, after the material is molded, the driving mechanism drives the first top plate 21 to drive the first top plate 24 to move, the mold opening action is completed, the second top plate 25 is pushed to move through the first top plate 21, the products are ejected out through the second top plate 28, the stress uniformity of the products is ensured, and the qualified rate of the products is improved.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that various changes and substitutions are possible within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A secondary ejection demoulding structure, comprising a mold assembly (10), characterized in that: an ejection assembly (20) and a cooling assembly (30) are arranged inside the mold assembly (10), and the ejection assembly (20) comprises a first ejector plate (21), a first guide rod (22), a first spring (23), a first ejector rod (24), a second ejector plate (25), a second guide rod (26), a second spring (27) and a second ejector rod (28);

The inner side wall of the first top plate (21) is symmetrically slidably connected to a first guide rod (22), the outer side wall of the first guide rod (22) is sleeved with a first spring (23), the upper surface of the first top plate (21) is symmetrically fixedly connected to four first top rods (24), a second top plate (25) is arranged above the first top plate (21), the inner side wall of the second top plate (25) is symmetrically slidably connected to a second guide rod (26), the outer side wall of the second guide rod (26) is sleeved with a second spring (27), and the upper surface of the second top plate (25) is symmetrically fixedly connected to four second top rods (28);

The cooling assembly (30) comprises a water inlet pipe (31), a pin (32), a partition (33), a heat exchange tube (34), a heat dissipation fin (35) and a water outlet pipe (36);

One end of the water inlet pipe (31) is connected to a needle (32), the inner wall of the needle (32) is fixedly connected to a partition (33), two needles (32) are provided, a heat exchange tube (34) is passed between the two needles (32), the outer wall of the heat exchange tube (34) is evenly fixedly connected to a heat dissipation fin (35), and the needle (32) is connected to a water outlet pipe (36).

2. A secondary ejection demoulding structure according to claim 1, characterized in that: the mold assembly (10) comprises a lower mold base (11) and a lower mold plate (12);

The top of the lower die base (11) is fixedly connected to the lower die plate (12), the first guide rod (22) and the second guide rod (26) are fixedly connected to the bottom of the lower die plate (12), and the bottom end of the second guide rod (26) is fixedly connected to a limiting block.

3. A secondary ejection demoulding structure according to claim 2, characterized in that a guide sleeve (13) is symmetrically arranged on the upper surface of the lower template (12).

4. A secondary ejection demoulding structure according to claim 3, characterized in that: a cavity (14) is provided on the upper surface of the lower template (12), and the insert pin (32) is fixedly connected to the inner wall of the cavity (14).

5. The secondary ejection demoulding structure according to claim 2, characterized in that an upper mold plate (17) is arranged above the lower mold base (11).

6. A secondary ejection demoulding structure according to claim 5, characterized in that an upper mold base (15) is fixedly connected to the top of the upper mold plate (17).

7. A secondary ejection demoulding structure according to claim 6, characterized in that an injection port (16) is provided at the top of the upper mold base (15).

8. A secondary ejection demoulding structure according to claim 6, characterized in that a guide column (18) is symmetrically fixedly connected to the bottom of the upper template (17).