CN223252273U - Demoulding structure - Google Patents

Abstract

The utility model discloses a demolding structure, which relates to the technical field of injection molding and comprises a front template and a rear template, wherein the front template and the rear template are respectively connected with a front mold core and a rear mold core, the rear mold core and the rear template are in sliding connection, the sliding direction of the rear mold core is the mold opening direction, a core insert can be inserted into a product, the inserting direction of the core insert is perpendicular to the mold opening direction, a sliding block is connected with the core insert, the sliding block is linked with the front template or the rear template, and the sliding block can drive the core insert to be pulled out of the product during mold opening. The utility model has the beneficial effects that the product is separated from the rear mold core by the core insert, the product can be demolded without an ejection piece, and no trace is left on the product due to the ejection action. According to the scheme, additional power is not needed, the extraction of the insert core of the product stripper is realized by means of the die opening action of the front die plate and the rear die plate, the existing equipment can be modified more simply, and the implementation and the popularization are facilitated.

Description

Demoulding structure

Technical Field

The utility model relates to the technical field of injection molding, in particular to a demolding structure.

Background

Injection molding is a production process commonly used at present, and the production of products can be rapidly completed by injecting injection molding materials into a mold. The existing injection molding process mostly adopts a mode of matching operation of a front mold and a rear mold, but has the following problems during processing.

1. When the mold is opened after injection molding is completed, the product is often attached to the mold and is difficult to take off;

2. As one of the solutions of the problem 1, there is a method of ejecting a product by using an ejection structure in the existing solution, but this method leaves a demolding trace on the surface of the product, and cannot meet the requirement of high standards on the surface of the product;

3. For products with more small details in shape and structure, when the products are separated from the die, the condition of product wire drawing easily occurs, and the quality of the products is unqualified.

Disclosure of utility model

Aiming at one of the defects in the prior art, the utility model provides a demolding structure, which solves the problem of demolding of injection molding products.

The utility model provides a demoulding structure, which comprises a front mould plate and a rear mould plate, wherein the front mould plate and the rear mould plate are respectively connected with a front mould core and a rear mould core, the front mould plate can move towards or away from the rear mould plate, an upper fixing plate is arranged corresponding to the front mould plate, a lower fixing plate is arranged corresponding to the rear mould plate, the rear mould plate can move towards or away from the lower fixing plate, the rear mould core is in sliding connection with the rear mould plate, the sliding direction of the rear mould plate is the direction of opening or closing the mould, and the demoulding structure further comprises:

The insert core can be inserted into a product, and the insertion direction of the insert core is vertical to the die opening direction;

And the sliding block is connected with the core insert, is linked with the front template or the rear template, and can drive the core insert to be pulled out of the product during die opening.

Preferably, be provided with a plurality of supporting components between back template and the lower fixed plate, supporting component includes:

the support piece is fixedly connected with the lower fixing plate and is in sliding connection with the rear template;

And the spring is arranged around the supporting piece and is propped against the rear template.

Preferably, the insert core is of a strip-shaped structure, one end of the insert core is fixedly connected with the sliding block, and the length direction of the insert core is parallel to the sliding direction of the sliding block.

Preferably, the sliding block is in sliding connection with the rear template, and the sliding direction of the sliding block on the rear template is vertical to the die opening direction.

Preferably, the method further comprises:

The baffle is fixedly arranged between the rear die core and the sliding block, the baffle is fixedly connected with the rear die plate, and the insert core penetrates through the baffle.

Preferably, a plurality of sliding grooves are formed in the rear template corresponding to the sliding blocks, the lower portions of the sliding blocks are fixedly connected with first guide blocks, and the first guide blocks are in sliding connection with the sliding grooves.

Preferably, the rear template further comprises:

the first limiting plate is arranged on the upper portion of the sliding groove, extends to the upper portion inside the sliding groove, and the lower surface of the first limiting plate is attached to the first guide block.

Preferably, the method further comprises:

the guide plate is fixedly connected with the front template, the guide plates are positioned at two sides of the sliding block, a guide groove is formed in one side, facing the sliding block, of the guide plate, the sliding block is connected with the guide plate in a sliding mode through the guide groove, and when the front template is far away from the rear template, the guide plate can drive the sliding block to slide on the rear template.

Preferably, the guide groove:

The upper vertical part is a chute in the vertical direction and is arranged close to the front template;

The upper end of the inclined part is communicated with the lower end of the vertical part, and the lower end of the inclined part is inclined towards the direction away from the rear die core;

The lower vertical part is a chute in the vertical direction and is arranged close to the rear template, and the bottom end of the lower vertical part is an opening;

The two sides of the sliding block are provided with second guide blocks corresponding to the guide grooves, and the second guide blocks are in sliding connection with the guide grooves.

Preferably, the support component is also arranged between the rear mould core and the lower fixing plate;

at least one side of the sliding block, which faces the rear die core, is provided with a linkage piece, and the linkage piece is fixedly connected with the sliding block and can slide on the rear die plate along with the sliding block;

The side part of the rear die core is fixedly provided with an extrusion block, the extrusion block is arranged corresponding to the linkage piece, and when the linkage piece slides, the linkage piece can push the extrusion block towards the direction of the lower fixing plate.

Compared with the prior art, the mold has the beneficial effects that the mold can be used for separating the product from the rear mold core by using the core insert, so that the product can be demolded without an ejection piece, and no trace is left on the product due to the ejection action. According to the scheme, additional power is not needed, the extraction of the insert core of the product stripper is realized by means of the die opening action of the front die plate and the rear die plate, the existing equipment can be modified more simply, and the implementation and the popularization are facilitated.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 2 is a schematic diagram of the overall structure of a second embodiment of the present application;

FIG. 3 is an enlarged view of part of A of FIG. 1;

FIG. 4 is a schematic view of a guide plate structure according to an embodiment of the present application;

FIG. 5 is a hidden guide plate state diagram according to an embodiment of the present application;

fig. 6 is a schematic diagram of a slider structure according to an embodiment of the present application.

In the figure:

1. Rear mould, 11, chute, 12, first limiting plate, 2, rear mould core, 3, core insert, 4, slide block, 41, second guide block, 42, linkage, 5, support, 6, spring, 7, baffle, 8, guide plate, 81, guide groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, the present application provides the following technical solutions:

The demolding structure comprises a front mold plate and a rear mold plate 1, wherein the front mold plate and the rear mold plate 1 are respectively connected with a front mold core and a rear mold core 2, the front mold plate can move towards or away from the rear mold plate 1, an upper fixing plate is arranged corresponding to the front mold plate, a lower fixing plate is arranged corresponding to the rear mold plate 1, and the upper fixing plate, the lower fixing plate and the front mold plate have no key improved structure, so that the structure is not shown in the drawing. In addition, the front template and the rear template 1 are respectively provided with a guide post and a guide sleeve, the connection form of the front template and the rear template 1 adopts the existing injection molding structure, and the specific connection form of the front template and the rear template is not the key point of the scheme and is not repeated here.

Unlike the prior art, the improvement of the scheme is that the rear die plate 1 can move towards or away from the lower fixing plate, the rear die core 2 is connected with the rear die plate 1 in a sliding mode, and the sliding direction of the rear die core is the direction of opening and closing the die. The insert core 3 is arranged corresponding to the product 100, the insert core 3 is of a long bar-shaped structure and can be inserted into the product 100, and the insertion direction of the insert core 3 is perpendicular to the die opening direction. One end of the insert core 3 is fixedly provided with a sliding block 4, the sliding block 4 is in linkage with the front template or the rear template 1, and the sliding block 4 can drive the insert core 3 to be pulled out of the product 100 during die opening. A plurality of supporting components are arranged between the rear template 1 and the lower fixing plate, each supporting component comprises a supporting piece 5 and a spring 6, the supporting pieces 5 are of a bolt structure, the lower ends of the supporting pieces are fixedly connected with the lower fixing plate, the upper parts of the supporting pieces are inserted into the rear template 1 and are in sliding connection with the rear template 1, the springs 6 are arranged on the supporting pieces 5 in a surrounding mode, and the springs 6 are propped against the rear template 1.

In this scheme, the form of sliding connection of the sliding block 4 and the rear template 1 and the form of linkage of the front template are adopted, that is, the direction of opening the die is taken as the vertical direction, the sliding block 4 and the rear template 1 are horizontally and slidably connected, when the die is opened, the front template moves upwards away from the rear template, in the process, the rear template 1 can move away from the lower fixing plate because the rear template 1 can move away from the lower fixing plate, so that the rear template 1 is jacked up to move upwards under the action of the supporting component 5, at the moment, the rear template 1 and the rear die core 2 are separated, because the sliding block 4 moves upwards along with the rear template 1, and the product 100 is driven by the insert core 3 to be separated from the rear die core 2. Along with the continuation of the mold opening action, the front mold plate moves upwards to drive the sliding block 4 to move transversely, the insert core 3 moves along with the sliding block 4 and is pulled out from the product 100, the product 100 naturally falls onto the rear mold core 2, and ejection-free demolding is completed. Because the insert 3 is inserted into the product 100, the contact area between the insert and the product is large, and thus, the problem of leaving marks on the product 100 during demolding does not occur.

On the basis of the above embodiment, referring to fig. 3, a baffle 7 is disposed between the rear mold core 2 and the slide 4, the baffle 7 is fixedly connected with the rear mold plate 1, and the insert core 3 penetrates through the baffle 7. Considering that the product 100 may follow the movement of the insert 3 during the sliding process of the slide 4 to drive the insert 3 from the product 100, the baffle 7 is provided, and the product 100 is blocked by the baffle 7, so that the insert 3 may be separated from the product 100.

On the basis of the above embodiment, referring to fig. 5, a plurality of sliding grooves 11 are provided on the rear mold plate 1 corresponding to the sliding blocks 4, the lower parts of the sliding blocks 4 are fixedly connected with the first guiding blocks, and the first guiding blocks are slidably connected with the sliding grooves 11. A first limiting plate 12 is respectively arranged on two sides of the upper part of the chute 11, the first limiting plate 12 extends to the upper part inside the chute 11, and the lower surface of the first limiting plate is attached to the first guide block. The first guide block is of a convex structure, the uppermost end of the first guide block is fixedly connected with the lower surface of the sliding block 4, and the upper surface of a boss in the middle of the first guide block is abutted against the first limiting plate 12.

On the basis of the above embodiment, taking the rear mold core 2 in the scheme as an example, two rows of injection molding grooves of the product 100 are formed in the rear mold core 2 in the scheme, so that one sliding block 4 is arranged corresponding to each row of injection molding grooves, two guide plates 8 are arranged corresponding to each sliding block 4, the upper parts of the guide plates 8 are fixedly connected with the front mold plates, the guide plates 8 are positioned on two sides of the sliding blocks 4, guide grooves 81 are formed in one side, facing the sliding blocks 4, of the guide plates 8, and second guide blocks 41 are arranged on two sides, corresponding to the guide grooves 81, of the sliding blocks 4, as shown in fig. 5, the second guide blocks 41 can be bearings, wherein the inner rings of the bearings are fixedly connected with the sliding blocks 4 or rotatably connected, and the outer rings of the second guide blocks 41 are positioned in the guide grooves 81. The sliding block 4 is slidably connected with the guide plate 8 through the second guide block 42 and the guide groove 81, and when the front template is far away from the rear template 1, the guide plate 8 can drive the sliding block 4 to slide on the rear template 1. In this way, the linkage of the front template and the slider 4 is achieved.

On the basis of the above embodiment, referring to fig. 4, the front mold plate is above, the rear mold plate 1 is below, the guide groove 81 comprises an upper vertical portion, an inclined portion and a lower vertical portion which are arranged from top to bottom, wherein the upper vertical portion is a chute in the vertical direction and is arranged close to the front mold plate, the inclined portion is a chute in the inclined direction, the upper end of the inclined portion is communicated with the lower end of the vertical portion, the lower end of the inclined portion is inclined towards the direction away from the rear mold core 2, the lower vertical portion is a chute in the vertical direction and is arranged close to the rear mold plate 1, and the bottom end of the lower vertical portion is an opening.

Through the guide groove 81 provided in this structure, the demolding process can be divided into four stages, wherein the first stage, the front mold plate moves upwards, the rear mold plate 1 moves upwards synchronously under the action of the supporting component, and the product 100 and the rear mold core 2 are separated. In the second stage, the front template continues to move upwards, and the second guide block 42 moves in the upper vertical portion in the guide groove 81, while the slider 4 maintains the original position. In the third stage, the second guide block 42 enters the inclined groove of the guide groove 81, the slide 4 starts to slide on the rear die plate 2, and the insert 3 is separated from the product 100 as the second guide block 42 moves to the lower end position of the inclined groove. In the fourth stage, the front form continues to move upward, the second guide block 42 slides out of the lower vertical groove, and the front form and the rear form are completely separated.

On the basis of the above embodiment, it is considered that if the product 100 is directly separated from the rear mold core 2 at the time of mold opening, the drawing or deformation of the detail position may occur because the temperature of the product 100 is still high at this time. Therefore, a supporting component is also arranged between the rear die core 2 and the lower fixing plate, referring to fig. 6, a linkage piece 42 is arranged on one side of one sliding block 4 facing the rear die core 2, the linkage piece 42 is fixedly connected with the sliding block 4 and can slide on the rear die plate 1 along with the sliding block 4, an extrusion block 21 is fixedly arranged on the side part of the rear die core 2, the extrusion block 21 is arranged corresponding to the linkage piece 42, and when the linkage piece 42 slides, the linkage piece 42 can push the extrusion block towards the direction of the lower fixing plate.

With this structure, when the mold is opened, first, the rear mold plate 1 and the rear mold core 2 are simultaneously moved upward, and in this process, the product 100 is further cooled. Until the front template drives the guide plate 8 to move to the slide block 4 to start sliding, when the slide block 4 slides, the linkage piece 42 pushes the extrusion block 21 downwards, so that the rear die core 2 moves downwards, at the moment, the product 100 and the rear die core 2 are separated, the deformation problem of the product 100 can be avoided, and as the slide block 4 continues to slide, the core insert 3 finally breaks away from the product 100

On the basis of the above embodiment, as shown in fig. 6, the link member 42 has a rod-like structure, a nearly inverted trapezoidal boss is provided at a lower portion thereof away from the slider 4, the extrusion block 21 is located at a side of the boss facing the slider 4 during injection molding, the extrusion block 21 is attached to a side surface of the boss, the extrusion block 21 is a cylindrical block, and a lower corner of the boss of the link member 42 is a rounded corner. When the slide block 4 starts to traverse, the boss of the linkage member 42 pushes the extrusion block 21 to communicate with the rear die core 2 downwards.

Referring to fig. 3, in order to ensure translation of the linkage member 42, a linkage limiting plate is disposed on the rear template 1 corresponding to the linkage member, and the linkage limiting plate abuts against the upper side of the linkage member 42, so as to ensure that the linkage member 42 is not deformed during translation of the pushing extrusion member 21.

In describing the present application and its embodiments, it should be understood that the orientation or positional relationship indicated by the terms "top", "bottom", "height", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description and simplification of the description, and are not indicative or implying that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present application.

In the present application and its embodiments, unless explicitly stated or limited otherwise, the terms "disposed," "mounted," "connected," "secured" and the like are to be construed broadly and as such, for example, as being fixedly connected, as being removably connected, as being integral with, as being mechanically connected, as being in electrical communication with, as being directly connected, as being indirectly connected through an intervening medium, as being in communication with or in interaction with two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application and its embodiments, unless explicitly specified and limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include both the first and second features not being in direct contact but being in contact with each other by way of 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 above and obliquely above the second feature, or simply indicating that the first feature is less level than the second feature.

The above disclosure provides many different embodiments, or examples, for implementing different structures of the application. The foregoing description of specific example components and arrangements has been presented to simplify the present disclosure. They are, of course, merely examples and are not intended to limit the application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (10)

1. The demolding structure comprises a front mold plate and a rear mold plate, wherein the front mold plate and the rear mold plate are respectively connected with a front mold core and a rear mold core, the front mold plate can move towards or away from the rear mold plate, an upper fixing plate is arranged corresponding to the front mold plate, a lower fixing plate is arranged corresponding to the rear mold plate, the demolding structure is characterized in that the rear mold plate can move towards or away from the lower fixing plate, the rear mold core is in sliding connection with the rear mold plate, the sliding direction of the rear mold core is the direction of opening or closing the mold, and the demolding structure further comprises:

The insert core can be inserted into a product, and the insertion direction of the insert core is vertical to the die opening direction;

And the sliding block is connected with the core insert, is linked with the front template or the rear template, and can drive the core insert to be pulled out of the product during die opening.

2. The stripper structure of claim 1, wherein a plurality of support assemblies are disposed between the rear die plate and the lower fixing plate, the support assemblies comprising:

the support piece is fixedly connected with the lower fixing plate and is in sliding connection with the rear template;

And the spring is arranged around the supporting piece and is propped against the rear template.

3. The stripping structure as claimed in claim 2, wherein the insert has a strip-like structure, one end of the insert is fixedly connected to the slider, and a longitudinal direction of the insert is parallel to a sliding direction of the slider.

4. A stripping structure as claimed in claim 3, wherein the slide is slidably connected to the rear die plate, and the slide direction of the slide on the rear die plate is perpendicular to the die opening direction.

5. The release structure of claim 4, further comprising:

The baffle is fixedly arranged between the rear die core and the sliding block, the baffle is fixedly connected with the rear die plate, and the insert core penetrates through the baffle.

6. The demolding structure as claimed in claim 5, wherein a plurality of sliding grooves are formed in the rear mold plate corresponding to the sliding blocks, the lower portions of the sliding blocks are fixedly connected with first guide blocks, and the first guide blocks are slidably connected with the sliding grooves.

7. The stripper structure of claim 6, wherein the back mold plate further comprises:

the first limiting plate is arranged on the upper portion of the sliding groove, extends to the upper portion inside the sliding groove, and the lower surface of the first limiting plate is attached to the first guide block.

8. The release structure of claim 5, further comprising:

the guide plate is fixedly connected with the front template, the guide plates are positioned at two sides of the sliding block, a guide groove is formed in one side, facing the sliding block, of the guide plate, the sliding block is connected with the guide plate in a sliding mode through the guide groove, and when the front template is far away from the rear template, the guide plate can drive the sliding block to slide on the rear template.

9. The stripper structure of claim 8, wherein said guide slots:

The upper vertical part is a chute in the vertical direction and is arranged close to the front template;

The upper end of the inclined part is communicated with the lower end of the vertical part, and the lower end of the inclined part is inclined towards the direction away from the rear die core;

The lower vertical part is a chute in the vertical direction and is arranged close to the rear template, and the bottom end of the lower vertical part is an opening;

The two sides of the sliding block are provided with second guide blocks corresponding to the guide grooves, and the second guide blocks are in sliding connection with the guide grooves.

10. The stripper structure of claim 9, wherein said support assembly is also disposed between said rear mold insert and said lower retainer plate;

at least one side of the sliding block, which faces the rear die core, is provided with a linkage piece, and the linkage piece is fixedly connected with the sliding block and can slide on the rear die plate along with the sliding block;

The side part of the rear die core is fixedly provided with an extrusion block, the extrusion block is arranged corresponding to the linkage piece, and when the linkage piece slides, the linkage piece can push the extrusion block towards the direction of the lower fixing plate.