CN218256558U

CN218256558U - Demoulding mechanism of mould

Info

Publication number: CN218256558U
Application number: CN202222212722.6U
Authority: CN
Inventors: 何德明; 冯兆文; 何世伟; 陈垚
Original assignee: Guangdong East Asia Electrical Appliance Co Ltd
Current assignee: Guangdong East Asia Electrical Appliance Co Ltd
Priority date: 2022-08-22
Filing date: 2022-08-22
Publication date: 2023-01-10
Anticipated expiration: 2032-08-22

Abstract

The utility model provides a demoulding mechanism of mould, include: the fixed die is provided with a limiting piece; the ejector plate is arranged below the fixed die; at least one first thimble arranged on the thimble plate and penetrating through the fixed die; the second ejector pin is arranged on the ejector plate and penetrates through the limiting piece and the fixed die; the plurality of push blocks are respectively arranged on the first thimble and the second thimble; the limiting sleeve is sleeved on the second ejector pin and is relatively fixed with the second ejector pin; in the ascending process of the ejector plate, the limiting sleeve is abutted with the limiting part in a matching mode, and the moving distance of the first ejector pin is larger than that of the second ejector pin. The utility model provides a pair of demoulding mechanism of mould sets up second thimble and ejector pad in the easy shrink part's of product below. When the stop collar and locating part butt, second thimble stop motion, first thimble continues to move up for ejector pad on the second thimble breaks away from the product, prevents effectively that the ejector pad is cliied to product shrink position.

Description

Demoulding mechanism of mould

Technical Field

The utility model relates to an injection mold's technical field, in particular to demoulding mechanism of mould.

Background

The mould is used for making the tool of the shaping article, this kind of tool is formed by various parts, different moulds are formed by different parts, it mainly realizes the processing of the article shape by changing the physical state of the shaping material, it is called as 'mother of industry'.

However, in the prior art, when a mold is used, a product injection molding part is often used, and the product injection molding part is formed by one-step pouring after materials are injected into the mold through an injection molding machine. Sometimes, the shrinkage part of the product also clamps the push block in the ejection demoulding process due to the shrinkage of some parts of the product injection moulding piece in the injection moulding process, so that the product is difficult to demould.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a demoulding mechanism of mould aims at effectively solving the problem that the ejector pad is difficult to the drawing of patterns because of the shrink is cliied to the product injection molding.

In order to achieve the above purpose, the technical scheme of the utility model has:

the utility model provides a demoulding mechanism of mould, include: the fixed die is provided with a limiting piece; the ejector plate is arranged below the fixed die; at least one first thimble arranged on the thimble plate and penetrating through the fixed die; the second ejector pin is arranged on the ejector plate and penetrates through the limiting piece and the fixed die; the plurality of push blocks are respectively arranged on the first thimble and the second thimble; the limiting sleeve is sleeved on the second ejector pin and is relatively fixed with the second ejector pin; in the ascending process of the ejector plate, the limiting sleeve is abutted to the limiting part in a matching mode, and the moving distance of the first ejector pin is larger than that of the second ejector pin.

Compared with the prior art, the utility model provides a pair of demoulding mechanism of mould sets up second thimble and ejector pad in the easy shrink part's of product below. After the product injection molding, the injection molding machine drives the ejector plate to move upwards to drive all the first ejector pins, the second ejector pins and the push blocks to move together, when the limiting sleeve abuts against the limiting part, the second ejector pins stop moving, at the moment, the product is pushed out to a certain position, the first ejector pins continue to move upwards, the push blocks on the second ejector pins are separated from the product, and the push blocks are effectively prevented from being clamped by the contraction parts of the product. The utility model discloses a cooperation of first thimble and second thimble has avoided the ejecting motion of secondary, and it is once ejecting just can carry out the drawing of patterns with the product, has both saved the time on using, has improved the work efficiency, has reduced the mould cost again.

In a preferred embodiment, the fixed mold comprises: the bottom of the die core is provided with an accommodating cavity, and the accommodating cavity is internally provided with the limiting piece; and the transition template is fixedly connected with the die core and is arranged below the die core.

In a preferred embodiment, the demolding mechanism of the mold further includes a support plate disposed in the accommodation cavity; the limiting piece is cylindrical, and one end of the limiting piece is abutted to the accommodating cavity; the other end of the supporting rod is propped against the supporting plate.

In a preferred embodiment, a notch is formed in the top end of the limiting sleeve to avoid a part of the supporting plate abutting against the limiting member.

In a preferred embodiment, the ejector plate is provided with an installation cavity, the tail end of the second ejector pin and the tail end of the limiting sleeve are movably arranged in the installation cavity, and the outer wall surface of the limiting sleeve abuts against the inner wall surface of the installation cavity.

In a preferred embodiment, the tail end portion of the second thimble is of a stepped cylindrical structure, and the tail end portion of the stop collar is correspondingly of a stepped cylindrical structure.

In a preferred embodiment, the demolding mechanism of the mold further includes an elastic element, and the elastic element is disposed in the mounting cavity, and one end of the elastic element abuts against the bottom surface of the mounting cavity, and the other end of the elastic element abuts against the bottom surface of the second ejector pin.

In a preferred embodiment, the outer circular surface of the elastic element abuts against the inner wall surface of the limiting sleeve.

In a preferred embodiment, the bottom surface of the limiting sleeve is higher than the bottom surface of the mounting cavity.

For a better understanding and implementation, the following figures illustrate the invention in detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:

fig. 1 is a schematic sectional view of a demolding mechanism of the mold of the present invention;

FIG. 2 is an enlarged schematic view of A in FIG. 1;

fig. 3 is an enlarged schematic view of B in fig. 1.

Description of the reference numerals:

100-fixed die, 110-mould core, 111-containing cavity, 120-limiting part, 130-transition template, 200-ejector plate, 210-installation cavity, 300-first ejector pin, 400-second ejector pin, 500-push block, 600-limiting sleeve, 610-notch, 700-support plate, 800-elastic element.

Detailed Description

In order to better illustrate the present invention, the present invention is described in further detail below with reference to the accompanying drawings.

It should be understood that the embodiments described are only some embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the embodiments in the present application.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the present application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the application, as detailed in the appended claims. In the description of the present application, it is to be understood that the terms "first," "second," "third," and the like are used solely for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order, nor is it to be construed as indicating or implying relative importance. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

In addition, in the description of the present application, "a plurality" means two or more unless otherwise specified. "and/or" describes the association relationship of the associated object, indicating that there may be three relationships, for example, a and/or B, which may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

Specifically, as shown in fig. 1 to 3, the present invention provides a mold demolding mechanism, including: a stationary mold 100 provided with a stopper 120; an ejector plate 200 disposed below the fixed mold 100; at least one first thimble 300 disposed on the thimble plate 200 and penetrating the fixed mold 100; at least one second thimble 400 disposed on the thimble plate 200 and penetrating through the limiting member 120 and the fixed mold 100; a plurality of push blocks 500 respectively disposed on the first thimble 300 and the second thimble 400; a stop collar 600 sleeved on the second thimble 400 and fixed to the second thimble 400; in the process of lifting the ejector plate 200, the stop sleeve 600 is abutted against the stop member 120 in a matching manner, and the moving distance of the first ejector pin 300 is greater than that of the second ejector pin 400.

Compared with the prior art, the utility model provides a pair of demoulding mechanism of mould sets up second thimble 400 and ejector pad 500 in the easy below of constriction part of product. After the product is injection molded, the injection molding machine drives the ejector plate 200 to move upwards to drive all the first ejector pins 300, the second ejector pins 400 and the push blocks 500 to move together, when the limiting sleeve 600 abuts against the limiting part 120, the second ejector pins 400 stop moving, at this time, the product is pushed out to a certain position, the first ejector pins 300 continue to move upwards, so that the push blocks 500 on the second ejector pins 400 are separated from the product, and the push blocks 500 are effectively prevented from being clamped by the contracted parts of the product. The utility model discloses a secondary ejecting motion has been avoided in the cooperation of first thimble 300 and second thimble 400, once ejecting just can carry out the drawing of patterns with the product, has both saved the time on using, has improved the work efficiency, has reduced the mould cost again.

In this embodiment, the fixed mold 100 includes: a cavity 110 having a receiving cavity 111 at a bottom thereof, wherein the limiting member 120 is disposed in the receiving cavity 111; a transition template 130 fixedly connected to the mold core 110 and disposed below the mold core 110. The utility model discloses divide cover half 100 into mould benevolence 110 and transition template 130, be in with locating part 120 setting the inside of cover half 100, during stop collar 600 and locating part 120 cooperation butt, need wear to locate transition template 130, behind stop collar 600 and locating part 120 butt, stop collar 600 still receives ascending effort, the utility model discloses utilize transition template 130 to protect the outer wall of stop collar 600, avoid the outside deformation that produces in top of stop collar 600.

Further, the demolding mechanism of the mold further comprises a support plate 700, wherein the support plate 700 is arranged in the accommodating cavity 111; the limiting member 120 is cylindrical, and one end of the limiting member abuts against the accommodating cavity 111; the other end is abutted against the supporting plate 700. The utility model discloses a backup pad 700 carries out limiting displacement to locating part 120 to fixed locating part 120's position makes stop collar 600 the same with the position of locating part 120 cooperation butt at every turn.

Further, a notch 610 is formed at the top end of the position-limiting sleeve 600 to avoid the portion where the supporting plate 700 abuts against the position-limiting member 120, so as to prevent the supporting plate 700 from interfering with the movement of the position-limiting sleeve 600.

In this embodiment, the ejector plate 200 is provided with an installation cavity 210, the tail end of the second ejector pin 400 and the tail end of the stop collar 600 are movably disposed in the installation cavity 210, and the outer wall surface of the stop collar 600 abuts against the inner wall surface of the installation cavity 210. By providing the mounting cavity 210 on the ejector plate 200, a space for mounting the second ejector pin 400 and the stop collar 600 is provided.

Further, the tail end portion of the second thimble 400 is a stepped cylindrical structure, and the tail end portion of the stop collar 600 is correspondingly a stepped cylindrical structure, so that after the second thimble 400 is connected with the stop collar 600 in a matching manner, the second thimble 400 and the stop collar 600 keep relatively static in a rising process, when the stop collar 600 is abutted to the limiting part 120 in a matching manner, the stop collar 600 cannot move upwards continuously, the second thimble 400 and the stop collar 600 are relatively static, and the second thimble 400 cannot move upwards continuously.

Further, the demolding mechanism of the mold further comprises an elastic element 800, wherein the elastic element 800 comprises a spring; the elastic element 800 is disposed in the mounting cavity 210, and one end of the elastic element abuts against the bottom surface of the mounting cavity 210, and the other end abuts against the bottom surface of the second thimble 400. The elastic element 800 is arranged on the bottom surface of the second thimble 400, and when the elastic element 800 is not acted by other external force, the limiting sleeve 600 and the second thimble 400 are supported by the elastic element 800, so that the limiting sleeve 600 is kept to be abutted against the top surface of the accommodating cavity 111; during the demolding process, after the stop sleeve 600 abuts against the stop member 120, the elastic element 800 is continuously compressed along with the upward movement of the ejector plate 200, so as to vacate the position and enable the ejector plate 200 to keep moving upward.

Further, the outer circular surface of the elastic element 800 abuts against the inner wall surface of the position-limiting sleeve 600 to limit the position of the elastic element 800, so as to prevent the elastic element 800 from deviating during compression.

Further, the bottom surface of the limiting sleeve 600 is higher than the bottom surface of the mounting cavity 210, so as to perform clearance treatment, and avoid the influence of the contact between the bottom surface of the limiting sleeve 600 and the bottom surface of the mounting cavity 210 on the upward movement of the ejector plate 200.

In the utility model, the ejection distance of the product is 50mm; the moving distance of the ejector plate is the same as the ejection distance of the product and is 50mm; the upward moving distance D of the second thimble is 40mm; when elastic element did not receive the compression because of moving up of thimble board, the stop collar bottom surface with distance d between the installation cavity bottom surface needs be more than or equal to 10mm, the utility model discloses an influence that small error when avoiding the mould to make caused sets up the numerical value of d into 11mm.

In the description of the present invention, it should be understood that the terms "vertical", "horizontal", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the scope of the present invention.

If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the use of "first" and "second" is merely for convenience in describing the invention and to simplify the description, and the words are not intended to have a special meaning unless otherwise stated.

The present invention is not limited to the above embodiment, and if various modifications or variations of the present invention do not depart from the spirit and scope of the present invention, they are intended to be covered if they fall within the scope of the claims and the equivalent technology of the present invention.

Claims

1. A mold release mechanism, comprising:

the fixed die is provided with a limiting piece;

an ejector plate disposed below the fixed mold;

at least one first thimble arranged on the thimble plate and penetrating through the fixed die;

the second ejector pin is arranged on the ejector plate and penetrates through the limiting piece and the fixed die;

the plurality of push blocks are respectively arranged on the first thimble and the second thimble;

the limiting sleeve is sleeved on the second ejector pin and is relatively fixed with the second ejector pin;

in the ascending process of the ejector plate, the limiting sleeve is in butt joint with the limiting part in a matching mode, and the moving distance of the first ejector pin is larger than that of the second ejector pin.

2. The mold release mechanism according to claim 1, characterized in that the stationary mold comprises:

the bottom of the die core is provided with an accommodating cavity, and the accommodating cavity is internally provided with the limiting piece;

and the transition template is fixedly connected with the mold core and is arranged below the mold core.

3. The mold release mechanism according to claim 2, characterized in that:

the demolding mechanism of the mold further comprises a supporting plate, and the supporting plate is arranged in the accommodating cavity;

the limiting piece is cylindrical, and one end of the limiting piece is abutted to the accommodating cavity; the other end is propped against the supporting plate.

4. The mold release mechanism according to claim 3, characterized in that:

the top end of the limiting sleeve is provided with a notch so as to avoid the part of the supporting plate, which abuts against the limiting part.

5. The mold release mechanism according to claim 1, characterized in that:

the ejector pin plate is provided with an installation cavity, the tail end of the second ejector pin and the tail end of the limiting sleeve are movably arranged in the installation cavity, and the outer wall surface of the limiting sleeve is abutted to the inner wall surface of the installation cavity.

6. The mold release mechanism according to claim 5, characterized in that:

the tail end part of the second ejector pin is of a stepped cylindrical structure, and the tail end part of the limiting sleeve is correspondingly of a stepped cylindrical structure.

7. The mold release mechanism according to claim 6, characterized in that:

the demolding mechanism of the mold further comprises an elastic element, wherein the elastic element is arranged in the mounting cavity, one end of the elastic element is abutted against the bottom surface of the mounting cavity, and the other end of the elastic element is abutted against the bottom surface of the second ejector pin.

8. The mold release mechanism according to claim 7, characterized in that:

the outer circular surface of the elastic element is abutted against the inner wall surface of the limiting sleeve.

9. The mold release mechanism according to claim 8, characterized in that:

the bottom surface of the limiting sleeve is higher than the bottom surface of the mounting cavity.