CN219838153U

CN219838153U - Silica gel mold

Info

Publication number: CN219838153U
Application number: CN202320339140.6U
Authority: CN
Inventors: 梁铨标; 林均伟; 陈强; 李华娣
Original assignee: Zhongshan Yuechen Electronic Industry Co ltd
Current assignee: Zhongshan Yuechen Electronic Industry Co ltd
Priority date: 2023-02-27
Filing date: 2023-02-27
Publication date: 2023-10-17
Anticipated expiration: 2033-02-27

Abstract

The utility model discloses a silica gel mold, which comprises a front mold plate and a rear mold plate, and is characterized in that: the novel plastic forming machine comprises a front template, and is characterized by further comprising a panel, wherein a forming block is arranged on the rear template, a withdrawal structure and a forming cavity matched with the forming block are arranged on the front template, the withdrawal structure comprises a shovel, a sliding block and a forming rod, a sliding hole and a sliding groove communicated with the sliding hole are arranged on the rear template, the shovel is in sliding fit with the sliding hole and is fixed with the panel through the sliding hole, an inclined guide structure is arranged between the shovel and the sliding block, the sliding block is arranged in the sliding groove, a rod hole communicated with the forming cavity is arranged on the wall of the sliding groove, the forming rod penetrates through the rod hole and is extruded by the shovel through the inclined guide structure, so that the sliding block slides along the sliding groove to drive the forming rod to withdraw from a jack of a product, and a time-delay limiting structure and an elastic piece are arranged between the panel and the front template.

Description

Silica gel mold

Technical Field

The utility model relates to a die, in particular to a silica gel die.

Background

Silica gel mold injection molding is generally classified into solid and liquid injection molding. The solid-state injection molding silica gel mold generally adopts a structure of front and rear mold opening, solid-state silica gel is put on a molding block in a rear mold, then the mold is closed, the solid-state silica gel is melted and is fully distributed along a cavity in the rear mold after the mold is closed by high temperature and extrusion, the front mold and the rear mold are separated after the molding, and then the product is taken out manually. Because the outer fringe of this product becomes the arcwall face, and the middle part position of arcwall face is the biggest profile limit and biggest profile limit department still is equipped with the jack, and for the fashioned shaping pole of jack and shaping piece be integrated into one piece structure, therefore the die joint must set up in biggest profile limit department and biggest profile limit parallel and level, when front mould, back mould die sinking just can not produce the interference with the shaping chamber wall in the front mould like this.

However, this results in a mold line at the maximum contour of the outer edge of the product, which requires post-processing to remove the mold line for aesthetic reasons, not only adding to the process but also being costly.

Fig. 1 is a schematic diagram of a mold of a legacy structure.

Fig. 2 is a schematic view of a mold in which the parting plane is forcibly set flush with the bottom surface of the product without changing the position of the forming bar, and it is clear from fig. 2 that the point a of the front mold collides with the forming bar when the mold is lifted.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides a silica gel mold.

The technical scheme adopted for solving the technical problems is as follows:

the utility model provides a silica gel mould, includes preceding template and back template, its characterized in that: the novel plastic forming machine comprises a front template, and is characterized by further comprising a panel, wherein a forming block is arranged on the rear template, a withdrawal structure and a forming cavity matched with the forming block are arranged on the front template, the withdrawal structure comprises a shovel, a sliding block and a forming rod, a sliding hole and a sliding groove communicated with the sliding hole are arranged on the rear template, the shovel is in sliding fit with the sliding hole and is fixed with the panel through the sliding hole, an inclined guide structure is arranged between the shovel and the sliding block, the sliding block is arranged in the sliding groove, a rod hole communicated with the forming cavity is arranged on the wall of the sliding groove, the forming rod penetrates through the rod hole and is extruded by the shovel through the inclined guide structure, so that the sliding block slides along the sliding groove to drive the forming rod to withdraw from a jack of a product, and a time-delay limiting structure and an elastic piece are arranged between the panel and the front template.

The inclined guide structure comprises a T-shaped block arranged on the shovel machine and a T-shaped groove arranged on the sliding block.

The time delay limit structure comprises a limit rod and a limit hole arranged on the front template, wherein the end part of the limit rod is provided with a limit ring, the bottom of the limit hole is provided with a through hole, the limit rod passes through the through hole to be fixed with the panel, and the limit ring is positioned in the limit hole and can slide in the limit hole and prop against the bottom of the limit hole.

The ejector comprises an ejector plate, one end of the ejector pin is fixed with the ejector plate, and the other end of the ejector pin penetrates through the rear template to be fixed with the forming block.

The thimble plate comprises a bottom needle plate and a surface needle plate, a countersunk hole is formed in the surface needle plate, a needle cap is arranged at one end of the thimble, and the needle cap is located in the countersunk hole and is fixed with the surface needle plate through the bottom needle plate to be locked in the countersunk hole.

The novel square iron mold comprises a back mold plate, and is characterized by further comprising a bottom plate, square iron is oppositely arranged between the bottom plate and the back mold plate, and a bottom needle plate and a face needle plate are positioned between the bottom plate and the back mold plate.

The beneficial effects of the utility model are as follows: according to the utility model, the forming rod and the forming block are arranged separately through the retreating structure on the front template, so that when the die is opened, the panel drives the retreating structure to move forward, so that the forming rod is driven to withdraw from the jack of a product, then the panel drives the front template and the retreating structure to move together and separate from the rear template through the delay limiting structure, and the forming rod and the front template integrally move, so that interference with the front template is avoided, and the forming rod is withdrawn from the jack of the product when the die is opened, and damage to the product is avoided.

Through the structure, the parting surface is flush with the bottom surface edge of the product, so that the die-bonding line can be positioned on the bottom surface edge, the whole appearance is not influenced, the die-bonding line is not required to be processed and removed in the later stage, the technical process is reduced, the processing time is saved, and the cost is reduced.

Drawings

The utility model will be further described with reference to the drawings and examples.

FIG. 1 is a schematic diagram of a mold of a legacy structure of the present utility model;

FIG. 2 is a schematic illustration of a prior art structural mold forcibly positioning the parting plane flush with the bottom surface of the product without changing the position of the forming bar;

FIG. 3 is a structural view of the present utility model;

FIG. 4 is a view of the structure of the hidden panel of the present utility model;

FIG. 5 is a view of the structure behind the hidden panel and front form of the present utility model;

FIG. 6 is an exploded view of the recoil structure;

FIG. 7 is a structural view of the front template;

FIG. 8 is a structural view of the rear form;

FIG. 9 is a structural view of a molding block;

fig. 10 is a structural view of the product.

Detailed Description

Advantages and features of the present disclosure, as well as methods of practicing the same, will be elucidated by the following embodiments described with reference to the accompanying drawings. This disclosure may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Furthermore, the disclosure is limited only by the scope of the claims.

The shapes, sizes, proportions, angles, and numbers disclosed in the drawings for describing embodiments of the present disclosure are merely examples, and thus the present disclosure is not limited to the details shown. Like reference numerals refer to like elements throughout the specification. In the following description, when a detailed description of related known functions or configurations is determined to unnecessarily obscure the gist of the present disclosure, the detailed description will be omitted. Where the terms "comprising," "having," and "including" are used in this specification, other components may be added unless the term "only" is used. Unless indicated to the contrary, singular terms may include the plural.

In interpreting the elements, although not explicitly described, the elements are understood to include the scope of error.

In describing the positional relationship, for example, when the positional relationship is described as "on … …", "above … …", "below … …", and "adjacent to … …", unless "immediately" or "directly" is used, one or more portions may be arranged between two other portions.

In describing the temporal relationship, for example, when the temporal sequence is described as "after … …", "subsequent", "next", and "before … …", unless "just" or "direct" is used, a discontinuous condition may be included.

It will be understood that, although the terms "first," "second," etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present disclosure.

As those skilled in the art will fully appreciate, the features of the different embodiments of the present disclosure may be partially or fully coupled or combined with each other and may cooperate and be technically driven in various ways. Embodiments of the present disclosure may be performed independently of each other or may be performed together in an interdependent relationship.

Referring to fig. 3 to 10, the utility model discloses a silica gel mold, which comprises a front mold plate 1 and a rear mold plate 2, and further comprises a panel 3, wherein a molding block 4 is arranged on the rear mold plate 2, in order to improve the efficiency, two products can be injected in one set of mold, thus the molding block 4 is two, the front mold plate 1 is provided with a withdrawal structure and a molding cavity 5 matched with the molding block 4, the withdrawal structure is correspondingly arranged according to the number of holes on a product 6, the product 6 is provided with two holes, thus two sets of withdrawal structures are correspondingly arranged, the withdrawal structure comprises a shovel 7, a sliding block 8 and a molding rod 9, the rear mold plate 2 is provided with a sliding hole 10 and a sliding groove 11 communicated with the sliding hole 10, the shovel 7 is in sliding fit with the sliding hole 10 and penetrates through the sliding hole 10 to be fixed with the panel 3 through a screw, the panel 3 can drive the shovel 7 to move along the opening direction when the mold is opened, and a slope structure is arranged between the shovel 7 and the sliding block 8, and the slope structure is specifically: the inclined guide structure comprises an inclined T-shaped block 12 arranged on the shovel 7 and an inclined T-shaped groove 13 arranged on the sliding block 8, so that the sliding block 8 can be extruded to move when the shovel 7 moves, the sliding block 8 is arranged in the sliding groove 11, the sliding groove 11 is perpendicular to the mold opening direction, the sliding groove 11 can guide the sliding block 8 to move vertically along the mold opening direction, the forming rod 9 is driven to withdraw from a jack of a product 6, a rod hole 14 communicated with the forming cavity 5 is formed in the groove wall of the sliding groove 11, the forming rod 9 penetrates through the rod hole 14 and is positioned in the forming cavity 5, and a time delay limiting structure and an elastic piece are arranged between the panel 3 and the front template 1.

As shown in the figure, the delay limiting structure comprises a limiting rod 15 and a limiting hole 25 arranged on the front template 1, wherein a limiting ring (not shown in the figure) is arranged at the end part of the limiting rod 15, a through hole is arranged at the bottom of the limiting hole 25, the limiting rod 15 passes through the through hole to be fixed with the panel 3, and the limiting ring is positioned in the limiting hole 25 and can slide in the limiting hole 25 and prop against the bottom of the limiting hole 25.

As shown in the figure, the elastic member 16 is a compression spring, and the front template 1 is provided with a mounting hole, one end of the compression spring is located in the mounting hole, and the other end of the compression spring abuts against the panel 3.

As shown in the figure, the product 6 of the utility model also comprises an ejection mechanism, because the bottom surface of the inner wall of the product 6 is provided with the back-off 17, a space is needed to be reserved after the forming block 4 is lifted up to enable the back-off 17 to be partially detached from the forming block 4, otherwise the back-off 17 is pressed between the forming block 4 and the rear template 2 and cannot be detached, and the product 6 is pulled down from the forming block 4 by using the soft characteristic of silica gel, so that the back-off 17 can be largely deformed to be detached. The back template 2 is provided with a positioning groove 18, the bottom surface of the forming block 4 is provided with a positioning block 19 matched with the positioning groove 18, the ejection mechanism comprises an ejector pin plate, one end of the ejector pin 20 is fixed with the ejector pin plate, the other end of the ejector pin 20 penetrates through an avoidance hole of the back template 2 and is fixed with the positioning block 19 through a screw, as a preferable structure, the ejector pin plate comprises a bottom needle plate 21 and a face needle plate 22, the face needle plate 22 is provided with a counter bore (not shown in the figure), one end of the ejector pin 20 is provided with a needle cap (not shown in the figure), and the needle cap is positioned in the counter bore and is fixed with the face needle plate 22 through the bottom needle plate 21 to be locked in the counter bore, so that the ejector pin 20 is convenient to manufacture and install.

The principle of the above process is as follows: when the die is opened, the panel 3 moves, so that the backing structure is driven to enable the forming rod 9 to withdraw from the jack of the product 6, in the process, the front die plate 1 and the rear die plate 2 are kept in a die-closing state through the pressure of the compression spring, the panel 3 moves and simultaneously drives the limiting ring to move in the limiting hole 25, when the limiting ring moves to the hole bottom of the limiting hole 25, the limiting ring abuts against the hole bottom of the limiting hole 25, the panel 3 can drive the front die plate 1 to move along the die-opening direction, and at the moment, the forming rod 9 is completely withdrawn from the jack of the product 6; after the current template 1 is completely opened, the ejector plate is pushed by power to start to move, and the molding block 4 is ejected through the ejector pins 20, so that the product 6 is conveniently pulled down from the molding block 4 by subsequent manual work.

The foregoing describes in detail a silica gel mold provided by the embodiments of the present utility model, and specific examples are applied herein to illustrate the principles and embodiments of the present utility model, and the above description of the embodiments is only for helping to understand the method and core idea of the present utility model; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present utility model, the present description should not be construed as limiting the present utility model in view of the above.

Claims

1. The utility model provides a silica gel mould, includes preceding template and back template, its characterized in that: the novel plastic forming machine comprises a front template, and is characterized by further comprising a panel, wherein a forming block is arranged on the rear template, a withdrawal structure and a forming cavity matched with the forming block are arranged on the front template, the withdrawal structure comprises a shovel, a sliding block and a forming rod, a sliding hole and a sliding groove communicated with the sliding hole are arranged on the rear template, the shovel is in sliding fit with the sliding hole and is fixed with the panel through the sliding hole, an inclined guide structure is arranged between the shovel and the sliding block, the sliding block is arranged in the sliding groove, a rod hole communicated with the forming cavity is arranged on the wall of the sliding groove, the forming rod penetrates through the rod hole and is extruded by the shovel through the inclined guide structure, so that the sliding block slides along the sliding groove to drive the forming rod to withdraw from a jack of a product, and a time-delay limiting structure and an elastic piece are arranged between the panel and the front template.

2. A silicone mold as set forth in claim 1, wherein: the inclined guide structure comprises a T-shaped block arranged on the shovel machine and a T-shaped groove arranged on the sliding block.

3. A silicone mold as set forth in claim 1, wherein: the time delay limit structure comprises a limit rod and a limit hole arranged on the front template, wherein the end part of the limit rod is provided with a limit ring, the bottom of the limit hole is provided with a through hole, the limit rod passes through the through hole to be fixed with the panel, and the limit ring is positioned in the limit hole and can slide in the limit hole and prop against the bottom of the limit hole.

4. A silicone mold as set forth in claim 1, wherein: the ejector comprises an ejector plate, one end of the ejector pin is fixed with the ejector plate, and the other end of the ejector pin penetrates through the rear template to be fixed with the forming block.

5. The silicone mold of claim 4, wherein: the thimble plate comprises a bottom needle plate and a surface needle plate, a countersunk hole is formed in the surface needle plate, a needle cap is arranged at one end of the thimble, and the needle cap is located in the countersunk hole and is fixed with the surface needle plate through the bottom needle plate to be locked in the countersunk hole.

6. A silicone mold as recited in claim 5, wherein: the novel square iron mold comprises a back mold plate, and is characterized by further comprising a bottom plate, square iron is oppositely arranged between the bottom plate and the back mold plate, and a bottom needle plate and a face needle plate are positioned between the bottom plate and the back mold plate.