CN219968561U - Rubber demoulding mechanism - Google Patents

Abstract

The utility model relates to the field of dies, in particular to a rubber demolding mechanism, which comprises a demolding plate, wherein a plurality of jacking posts are fixed on the demolding plate, a convex block protruding upwards is fixed on one side of the top surface of each jacking post, the top surface of each jacking post is provided with a convex block protruding outwards, in the ejection process, the convex block ejects a product once, and the convex block only applies acting force to one side of the product, so that the stress of the product is reduced, the interaction force between the product and the molding plate is reduced, and the service cycle of the die is prolonged; in the follow-up ejection process, the ejector column carries out secondary ejection to the product, and the ejection process is comparatively mild, and the pressure that the product receives is less, effectively avoids the product to appear the appearance of circumstances such as fracture, damage, guarantees the qualification rate of product.

Description

Rubber demoulding mechanism

Technical Field

The utility model relates to the field of molds, in particular to a rubber demolding mechanism.

Background

A mold is a tool for making a molded article, which is composed of various parts, and different molds are composed of different parts. The processing of the appearance of the article is realized mainly by changing the physical state of the formed material. Demolding refers to a series of operations for removing a product from a mold, after injection molding of a rubber product, ejection and demolding of a thimble are mostly adopted, the ejection and demolding of the thimble easily causes product breakage, and long-term use easily causes deformation of a template, so that the service cycle of the mold is shorter, and the production cost is higher.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides a rubber demolding mechanism which can solve the technical problems that a conventional ejection structure is easy to cause breakage of rubber products, influences on a mold plate and the like.

In order to solve the technical problems, the utility model provides the following technical scheme:

the utility model provides a rubber demoulding mechanism which characterized in that, includes the stripper, be fixed with a plurality of lifters on the stripper, top surface one side of lifters is fixed with the bellied lug that makes progress, the ratio of the height of lug and the height of lifters is 1:3-1:4, form step portion between lug and the lifters, the edge of step portion is circular arc curved surface.

Further, the stripper plate is arranged in the die, the jacking columns are in one-to-one correspondence with the forming cavities in the die, and the ratio of the height of the protruding blocks to the height of the forming cavities is 2:3.

Further, a plurality of positioning holes are formed in the stripper plate.

Further, the top surface of the bump is a plane.

Further, the plurality of top posts are arranged on the stripper plate in a display manner.

The beneficial effects of the utility model are as follows:

in the scheme, the top surface of the jacking column is provided with the outwards protruding lug, in the ejection process, the lug ejects the product once, the lug only applies acting force to one side of the product, and the stress of the product is reduced, so that the interaction force between the product and the template is reduced, and the service cycle of the die is prolonged; in the follow-up ejection process, the ejector column carries out secondary ejection to the product, and the ejection process is comparatively mild, and the pressure that the product receives is less, effectively avoids the product to appear the appearance of circumstances such as fracture, damage, guarantees the qualification rate of product.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a rubber demolding mechanism according to the present utility model;

figure 2 is a schematic diagram of a stripper plate according to the present utility model.

Description of the main reference signs

1. Removing the template; 101. a top column; 102. a bump; 103. positioning holes; 104. a step portion; 1041. a curved surface of an arc; 105. a yielding part; 2. an upper template; 3. a mold core plate; 301. forming a hole site; 4. a lower template; 401. a limit protrusion; 5. rubber products.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

Referring to fig. 1 and 2, the present utility model provides a rubber demolding mechanism, which includes an upper mold plate 2 and a lower mold plate 4 disposed opposite to each other, a demolding plate 1 is disposed on the lower mold plate 4, and a mold core plate 3 is disposed between the demolding plate 1 and the upper mold plate 2. The mould core plate 3 is provided with a plurality of molding hole sites 301, and the rubber product 5 is positioned in the molding hole sites 301 for molding. Limiting protrusions 401 are fixed on the periphery of the lower die plate 4, abdication portions 105 corresponding to the positions of the limiting protrusions 401 are arranged on the periphery of the stripper plate 1, and the stripper plate 1 is embedded between the limiting protrusions 301 through the abdication portions 105. The limiting protrusion 301 limits the position of the stripper plate 1, ensures the accuracy of the position of the stripper plate 1, and ensures the stability of the stripper plate 1 in the uplink or downlink process.

Referring to fig. 2, a plurality of pillars 101 are fixed on the stripper plate 1, and the pillars 101 are arranged on the stripper plate 1 in a display manner, in this embodiment, the pillars 101 and the molding holes 301 are in one-to-one correspondence. In this embodiment, the stripper plate 1 is installed in a mold, and the pillars 101 are in one-to-one correspondence with molding cavities in the mold (not shown in the drawing). The stripper plate 1 is provided with a plurality of positioning holes 103, in this embodiment, the number of the positioning holes 103 is four, the four positioning holes 103 are respectively distributed at four corners of the stripper plate 1, the mold passes through the positioning holes 103 through the guide posts to guide the stripper plate 1, the stripper plate 1 is ensured to move towards the forming cavity, and the ejector posts 101 are controlled to enter the forming cavity to eject products in the forming cavity.

The protruding block 102 protruding upwards is fixed on one side of the top surface of the jacking column 101, the step 104 is formed between the protruding block 102 and the jacking column 101, the jacking column 101 is used for ejecting products in a segmented mode, the protruding block 102 on the jacking column 101 is ejected before the products are contacted, the top surface of the other side of the jacking column 101 is ejected in a contact mode after the jacking column 101 moves to a certain height, single-side stress demolding is conducted between the products and the jacking column 101, resistance between the products and a mold is effectively reduced, and the service cycle of the mold is prolonged. The edge of the step part 104 is an arc curved surface 1041, so that the product is prevented from being scratched by the right-angle edge, and the integrity of the product is ensured.

The ratio of the height of the protruding block 102 to the height of the forming cavity is 2:3, namely, the ratio of the protruding block 102 to the height of the product is 2:3, and the larger height ratio of the protruding block 102 relative to the product is set, so that the protruding block 102 is ensured to be more stable in the ejection process.

The ratio of the height of the bump 102 to the height of the top post 101 is 1:3-1:4, in this embodiment, the ratio of the height of the bump 102 to the height of the top post 101 is 1:3.5, and the ratio of the height of the bump 102 to the height of the top post 101 can be selected to be 1:3 or 1:4 according to different sizes of products. The bump 102 ejects one side of the product once, and single-side ejection effectively reduces friction force between the product and the die, and reduces stress of the template and power consumption of the die; the height difference is generated between one side of the product and the other side in the ascending process, the rubber product is prevented from breaking in the ejection process through the elasticity of the rubber product, the step part 104 is provided with a proper height difference by controlling the height ratio of the convex block 102 relative to the ejection column 101, the interval between primary ejection and secondary ejection is shortened, the height difference at two sides of the rubber product is controlled within the elasticity range of the rubber product, the rubber product is prevented from breaking, and the integrity of the rubber product is ensured.

In this embodiment, the top surface of the bump 102 is a plane, the contact area between the plane bump and the product is larger, the bump 102 is more tightly attached to the product, and it is ensured that the acting force applied to the product by the bump 102 in the rising process is more uniform and stable.

In this scheme, the product is rubber product 5, and rubber product 5 is the elastomer, and stripper plate 1 passes through locating hole 103 setting in the mould, and stripper plate 1 rises along with the mould and accomplishes ejecting action. In the ejection process, the bump 102 positioned at one side of the top end of the ejector post 101 ejects the product once, and the once ejection ejects only one side of the product, so that the stress of the product is reduced; in the continuous rising process, the other side of the top end of the jacking column 101 carries out secondary ejection on the product, pressure is dispersed, cracking of the product is effectively avoided, and the qualification rate of the product is improved.

In the ejection work for the sheet-like rubber product, the pillars 101 arranged in an array may be provided with a height difference between adjacent pillars 101. For example, the heights of the ejector posts 101 positioned at two sides are larger or smaller than the height of the ejector posts 101 positioned in the middle, and in the ejection process, the two sides or the middle of the sheet rubber product are sequentially ejected; or the heights of the jacking columns 101 from the center to the edges are sequentially increased or sequentially decreased, and the center or the edges of the sheet rubber product are sequentially ejected in the ejection process. The acting force of the sheet rubber product is effectively reduced, and the situation that the sheet rubber product is broken is avoided.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (5)

1. The utility model provides a rubber demoulding mechanism which characterized in that, includes the stripper, be fixed with a plurality of lifters on the stripper, top surface one side of lifters is fixed with the bellied lug that makes progress, the ratio of the height of lug and the height of lifters is 1:3-1:4, form step portion between lug and the lifters, the edge of step portion is circular arc curved surface.

2. The rubber stripper mechanism of claim 1, wherein: the stripper plate is arranged in the die, the jacking columns are in one-to-one correspondence with the forming cavities in the die, and the ratio of the height of the protruding blocks to the height of the forming cavities is 2:3.

3. The rubber stripper mechanism of claim 1, wherein: and a plurality of positioning holes are formed in the stripper plate.

4. The rubber stripper mechanism of claim 1, wherein: the top surface of the lug is a plane.

5. The rubber stripper mechanism of claim 1, wherein: the plurality of top posts are arranged on the stripper plate in a displaying way.