CN221604901U - Mould - Google Patents

Abstract

The utility model relates to the technical field of product molding, and provides a die, which comprises: a first die body provided with a first groove; the second die body is provided with a second groove, and the side parts of the first die body and the second die body are spliced to form a die cavity; the elastic connecting piece is suitable for elastically connecting the first die body and the second die body, so that the first die body and the second die body have elastic displacement in the splicing direction; the die has less blocks, simple processing and low processing cost; because the first die body and the second die body have elastic displacement, the product can be taken out only by prying loose the product along the vertical face of the first groove by using the thin bamboo strips, complex disassembly and assembly work is not needed, the demolding is convenient, and the production efficiency can be effectively improved; when the product is cooled and solidified, the first die body and the second die body can elastically displace to reduce the extrusion force between the inner wall of the die cavity and the product, so that the internal stress of the product caused by thermal expansion and cold contraction can be effectively eliminated, and the quality of the product is improved.

Description

Mould

Technical Field

The utility model relates to the technical field of product molding, in particular to a die.

Background

The mold is a tool for manufacturing a molded article, and the blank is made into a corresponding three-dimensional shape by a specific contour or an inner cavity shape, and taking a composite material product as an example, the composite material product is generally molded by the mold and needs to be molded at a high temperature.

When the composite material product is molded at a high temperature, the coefficients of thermal expansion and contraction are different due to the fact that the materials of the die and the product are different, the coefficient of the die is generally larger than that of the product, the shrinkage of the die is larger when the die is cooled and solidified, and the shrinkage of the product is smaller, so that the die can tightly hold the product, and the product is difficult to demould.

In the related art, a split-type mold is generally adopted, the mold is firstly divided into two parts, and then a cavity of the upper part mold is divided into a plurality of blocks according to actual demolding requirements, as shown in fig. 1, the split-type mold mainly comprises a base 50 and a plurality of block units 52 detachably connected to the base 50 through bolts 51, and the cavity is formed by enclosing the base 50 and the plurality of block units 52. Thus, the mold release can be achieved by simply removing the mold plate unit 52 from the base 50.

However, with the above related technology, the demolding process is complicated, and the product is extruded by the mold to generate internal stress in the cooling and solidifying process, which affects the quality of the product.

Disclosure of utility model

The utility model provides a die which is used for solving the defects that in the prior art, the demolding process is complex, and in the cooling process, the product is extruded by the die to generate internal stress so as to influence the quality of the product.

The present utility model provides a mold comprising:

A first die body provided with a first groove;

The second die body is provided with a second groove, and the side parts of the first die body and the second die body are spliced, so that the first groove and the second groove are spliced with each other to form a die cavity;

The elastic connecting piece is suitable for elastically connecting the first die body and the second die body, so that the first die body and the second die body have elastic displacement in the splicing direction.

According to the present utility model, there is provided a mold, the elastic connection member comprising:

The guide post is slidably arranged on the second die body in a penetrating manner along the splicing direction, and the guide post penetrates through one end of the second die body to be fixedly connected with the first die body;

The limiting part is fixedly connected to one end, far away from the first die body, of the guide column;

And one end of the elastic body is elastically abutted with the second die body, and the other end of the elastic body is elastically abutted with the limiting part.

According to the utility model, the elastic body comprises a spring;

The spring is sleeved on the guide post, and two ends of the spring are respectively elastically abutted with the second die body and the limiting part.

According to the mold provided by the utility model, the elastic body is made of elastic rubber materials.

According to the mold provided by the utility model, the second mold body is provided with the step counter bore;

the guide post is arranged in the step counter bore in a penetrating mode, the elastic body is located in the step counter bore, and one end, away from the limiting part, of the elastic body is elastically abutted to the step of the step counter bore.

According to the die provided by the utility model, the guide post is in threaded connection with the first die body; or the limiting part is in threaded connection with the guide post.

According to the utility model, at least one second die body is connected to at least one side of the first die body along the first direction, and at least one die cavity is arranged.

According to the mold provided by the utility model, the second mold body is provided with two second mold bodies which are respectively connected with the two sides of the first mold body along the first direction;

The number of the die cavities is two.

According to the mold provided by the utility model, the springs comprise rectangular springs and round springs.

According to the mold provided by the utility model, the limiting part is integrally formed on the guide post.

The utility model also provides a processing method of the die, which comprises the following steps:

Determining the size specification of a blank;

Blank processing, namely processing raw materials based on the size specification of the blank, integrally processing a first die body and a second die body on the same raw material, and reserving a cutting allowance between the first die body and the second die body;

Forming a positioning hole, forming a positioning hole on the integral side part after the blank is machined, wherein the position of the positioning hole is a preset connecting position of the first die body and the second die body, and the depth of the positioning hole extends from the first die body to the second die body;

Cutting, namely milling cutting allowance between the first die body and the second die body by using a milling cutter to realize separation of the first die body and the second die body;

hole processing, namely processing positioning holes on the first die body and the second die body;

and assembling the first die body and the second die body based on the positions of the positioning holes.

The utility model also provides a processing method of the die, wherein the determining of the dimension specification of the blank comprises the following steps:

after the mould is drawn, determining a segmentation interface of the first mould body and the second mould body, and segmenting the drawn mould to obtain the first mould body and the second mould body.

And (3) outwards translating the second die bodies on two sides of the first die body by a preset width, and stretching the solid body by taking the dividing surfaces of the first die body and the second die body as basic surfaces, wherein the stretching width is the preset width, so that the dimension specification of the blank is obtained.

According to the processing method of the die, the cutting allowance is the width of one cutter.

According to the die provided by the utility model, the elastic displacement of the first die body and the second die body is realized in the splicing direction through the elastic connecting piece, so that under the mutual extrusion of a product and the inner wall of the die cavity, the first die body and the second die body can elastically displace to prop up the die cavity to adapt to the size of the product, the extrusion force of the inner wall of the die cavity and the product is reduced, the internal stress of the product caused by thermal expansion and cold contraction can be effectively eliminated, and the quality of the product is improved; when demolding is carried out, the product can be conveniently taken out of the mold cavity by prying the product along the edge of the first groove to release the product; compared with the related art, the mold has less blocks, simpler processing and lower processing cost; when in demolding, the product can be conveniently taken out of the mold cavity by only prying the joint between the first mold body and the second mold body, complex disassembly and assembly work are not needed, the demolding is convenient, and the production efficiency can be effectively improved; when the product is cooled and solidified in the die cavity, the first die body and the second die body can elastically displace to reduce the extrusion force between the inner wall of the die cavity and the product, so that the internal stress of the product caused by thermal expansion and cold contraction can be effectively eliminated, and the quality of the product is improved.

Drawings

In order to more clearly illustrate the utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a structure of a mold in the related art;

FIG. 2 is a schematic diagram of a mold according to an embodiment of the present utility model;

FIG. 3 is a second schematic diagram of a mold according to an embodiment of the present utility model;

FIG. 4 is a schematic view of an elastic connector according to an embodiment of the present utility model mated with a first mold body and a second mold body;

Fig. 5 is a schematic flow chart of a mold processing method according to an embodiment of the present utility model.

Reference numerals:

10. A first die body; 20. a second die body; 200. step counter bore; 30. an elastic connection member; 300. a guide post; 301. a limit part; 302. an elastomer; 40. a mold cavity; 50. a base; 51. a bolt; 52. and a template unit.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, 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.

In order to facilitate understanding of the mold provided by the utility model, firstly, an application background of the mold is described, the mold is a tool for manufacturing a molded article, taking a composite material product as an example, the composite material product needs to be molded at a high temperature by using the mold, and when the composite material is molded at a high temperature, the mold and the product are different in material, so that coefficients of thermal expansion and cold contraction are different, when the mold is cooled, the shrinkage of the mold is larger, the shrinkage of the product is smaller, the mold can hold the product tightly, and thus the demolding is difficult.

In the related art, a mold is generally divided into an upper part and a lower part, and then a cavity of the upper part mold is divided into a plurality of blocks according to actual demolding requirements, and demolding is realized by disassembling the upper part mold during demolding.

However, with the above-described related art, there are at least the following drawbacks:

1. The mold has more blocks and more complex processing, the upper and lower structures are adopted by the mold, and the upper and lower joint surfaces of the mold need to ensure roughness, so that processing materials need to be reserved, and the materials of the mold are added in the thickness direction, so that the processing is time-consuming and material-consuming;

2. in the production process, the die is required to be repeatedly disassembled and assembled, the workload of the disassembly and assembly processes of the die is large, and the production efficiency is influenced;

3. In the cooling and solidifying process, the product is extruded by the die to generate internal stress, so that the quality of the product is affected;

4. the three cavities on the die are through, the rigidity is insufficient, the processing is easy to deform, the step difference is easy to generate at the lap joint, and the die is scrapped or the product is scrapped.

Based on the above, the utility model provides a die, which has the advantages of simpler die processing and more convenient demoulding process, can reduce the internal stress of the product and improve the quality of the product.

The mold of the present utility model is described below with reference to fig. 2 to 5.

Referring to fig. 2 and 3, a mold includes a first mold body 10, a second mold body 20, and an elastic connection member 30; wherein, the first die body 10 is provided with a first groove, the second die body 20 is provided with a second groove, and the side parts of the first die body 10 and the second die body 20 are spliced, so that the first groove and the second groove are spliced with each other to form a die cavity 40 for forming a product; the elastic connection member 30 is used to connect the first mold body 10 and the second mold body 20, so that the first mold body 10 and the second mold body 20 have an elastic displacement in the splicing direction.

In actual operation, under the action of the elastic connecting piece 30, the side parts of the first die body 10 and the second die body 20 are connected, the first groove of the first die body 10 and the second groove of the second die body 20 are spliced to form a die cavity 40, and because the expansion coefficient and contraction coefficient of the die are larger than those of the product, the product can be mutually extruded with the inner wall of the die cavity 40 when cooled and solidified in the die cavity 40, the elastic connecting piece 30 can enable the first die body 10 and the second die body 20 to have elastic displacement in the splicing direction, therefore, under the mutual extrusion of the product and the inner wall of the die cavity 40, the first die body 10 and the second die body 20 can generate elastic displacement, the die cavity 40 is propped open to adapt to the size of the product, the extrusion force of the inner wall of the die cavity 40 and the product is reduced, thereby the internal stress of the product caused by expansion and contraction can be effectively eliminated, and the quality of the product is improved. At the time of demolding, the product can be conveniently taken out of the mold cavity 40 by prying the product loose only by prying the product along the edge of the first groove using a tool.

Compared with the related art, the die provided by the embodiment of the utility model has the advantages of less blocking, simpler processing and lower processing cost; when in demolding, the product can be conveniently taken out of the mold cavity 40 by prying the product along the edge of the first groove, complex disassembly and assembly work are not needed, the demolding is convenient, and the production efficiency can be effectively improved; when the product is cooled and solidified in the die cavity 40, the first die body 10 and the second die body 20 can elastically displace to reduce the extrusion force between the inner wall of the die cavity 40 and the product, so that the internal stress of the product caused by thermal expansion and cold contraction can be effectively eliminated, and the quality of the product is improved.

Referring to fig. 2 and 3, the overall die is rectangular, and the material of the die can be selected according to actual requirements; the first mold body 10 is provided with two first grooves symmetrically arranged along a diagonal line, and the first mold body 10 forms a main body part of the mold; the second mold body 20 has two second grooves respectively connected to two opposite sides of the first mold body 10, and the second grooves of the two second mold bodies 20 respectively enclose with the two first grooves of the first mold body 10 to form two mold cavities 40, wherein openings of the two mold cavities 40 face upwards and are arranged along diagonal lines of the mold.

It will be appreciated that the cavity 40 is a cavity in a mold for forming a product of a particular shape and size, and that the shape of the cavity 40 may be different for products of different shapes and sizes, and may be specifically configured according to actual requirements.

Also, the mold is not limited to the above-listed shapes, and may be other shapes based on actual needs and use situations; the second mold body 20 may further have one side connected to the first mold body 10, and the mold cavities 40 are not limited to two, may have one or more than three, and may be arranged in a diagonal manner, for example, may be arranged side by side along a width direction or a length direction of the mold, and may specifically be flexibly arranged according to actual requirements, shape specifications of the mold cavities 40, and the like.

Referring to fig. 3 and 4, the elastic connection member 30 is provided in plurality for connecting the first mold body 10 and the two second mold bodies 20; the elastic connecting piece 30 comprises a guide post 300, a limit part 301 and an elastic body 302, wherein the guide post 300 is slidably arranged on the second die body 20 along the splicing direction of the first die body 10 and the second die body 20 in a penetrating manner, one end of the guide post 300 penetrating through the second die body 20 is fixedly connected with the first die body 10, and the limit part 301 is fixedly connected with one end, far away from the first die body 10, of the guide post 300, so that the first die body 10 and the second die body 20 can relatively slide along the splicing direction; one end of the elastic body 302 is elastically abutted against the second die body 20, and the other end is elastically abutted against the limiting portion 301, and under the action of the elastic body 302, the side portion of the second die body 20 is pushed to be elastically pressed against the side portion of the first die body 10.

In actual operation, under the action of the elastic body 302, the side part of the second die body 20 is pushed to elastically abut against the side part of the first die body 10, so that the first groove and the second groove are surrounded to form a die cavity 40, and when a product is cooled and molded in the die cavity 40, the product can extrude the inner wall of the die cavity 40 due to the fact that the thermal expansion coefficient and the cold contraction coefficient of the die are larger than those of the product, the elastic body 302 is elastically deformed, the second die body 20 slides along the guide post 300 towards the direction away from the first die body 10, and the die cavity 40 is propped up to effectively avoid the excessive extrusion of the product to cause the stress of the product; when demolding, the workpiece can be taken out by stretching the joint between the first mold body 10 and the second mold body 20.

Specifically, the elastic body 302 may be selected from springs, for example, rectangular springs or circular springs; the spring is sleeved on the guide post 300, and two ends of the spring are respectively elastically abutted against the second die body 20 and the limiting part 301, so that the side part of the first die body 10 and the side part of the second die body 20 are elastically pressed, and the two have the allowance of elastic displacement.

Specifically, the spring is preferably a rectangular spring for the purpose of improving stability.

Of course, the elastic body 302 is not limited to a spring, and in other embodiments, the elastic body 302 may be configured as a tubular structure made of elastic rubber or other structures, so that elastic force may be provided to allow the first mold body 10 and the second mold body 20 to have a margin of elastic displacement.

Specifically, the second die body 20 is provided with a step counterbore 200 corresponding to the position of the elastic connecting piece 30, the guide post 300 slidably penetrates through the step counterbore 200, the elastic body 302 is located in the step counterbore 200, and the end of the elastic body 302 is elastically abutted against the step surface of the step counterbore 200. In this way, the flatness of the mold as a whole can be improved and the elastic body 302 can be protected.

The position of the first die body 10 corresponding to the guide post 300 is provided with a threaded hole, the guide post 300 is in threaded connection with the first die body 10, so that the compression amount of the elastic body 302 can be adjusted by screwing the guide post 300, and the elastic force of the elastic body 302 can be adjusted according to actual demands, and in addition, the first die body 10 and the second die body 20 can be disassembled.

The limiting portion 301 is integrally formed on the guide post 300, and a groove with a shape like a Chinese character 'i' or a cross or other shapes can be formed on one surface of the limiting portion 301, which is away from the guide post 300, for being matched with tools such as a screwdriver, so that screwing of the guide post 300 is facilitated.

Of course, the elastic body 302 is not limited to the above-mentioned elastic force adjustment method, and for example, in another embodiment, the limit portion 301 may be screwed to the guide post 300, so that the compression amount of the elastic body 302 may be adjusted by screwing the limit portion 301, thereby adjusting the elastic force thereof.

The mold processing method provided by the utility model is described below, and the mold processing method described below and the mold described above can be referred to correspondingly with each other.

Referring to fig. 5, a method for processing a mold includes the steps of:

S1, determining the size specification of a blank;

After the mold is drawn, determining a division interface of the first mold body 10 and the second mold body 20, and dividing the drawn mold to obtain the first mold body 10 and the second mold body 20.

And (3) outwards translating the second die bodies 20 at two sides of the first die body 10 by a preset width, and then stretching the entity by taking the dividing surfaces of the first die body 10 and the second die body 20 as basic surfaces, wherein the stretching width is the preset width, so that the dimension specification of the blank is obtained.

S2, blank processing;

the method comprises the steps of processing raw materials based on the size specification of a blank, integrally processing a first die body 10 and a second die body 20 on the same raw material, wherein a preset width between the first die body 10 and the second die body 20 is cutting allowance.

S3, forming a positioning hole;

After the blank is processed, the whole side part is provided with a positioning hole, the position of the positioning hole is the preset connecting position of the first die body 10 and the second die body 20, and the depth of the positioning hole extends from the first die body 10 to the second die body 20.

S4, cutting;

The cutting allowance between the first die body 10 and the second die body 20 is milled by a milling cutter, so that the first die body 10 and the second die body 20 are separated.

S5, hole processing;

The locating holes on the first die body 10 and the second die body 20 are machined, wherein the locating holes on the first die body 10 are tapped to form threaded holes, and the locating holes on the second die body 20 are reamed and the stepped counter bores 200 are opened.

S6, assembling;

After the first die body 10 and the second die body 20 are spliced, the guide post 300 is used to pass through the step counter bore 200 on the second die body 20 and then is in threaded connection with the threaded hole on the first die body 10, two ends of the spring are respectively elastically abutted with the limit part 301 and the step surface of the step counter bore 200, and the guide post 300 is screwed to adjust the compression amount of the spring, so that the spring can provide proper pretightening force to compress the first die body 10 and the second die body 20, and the assembly of the die is completed.

Specifically, the cutting allowance is a width of one cutter, and may be 12mm, for example.

By adopting the processing mode, the first die body 10 and the second die body 20 are integrally processed and molded firstly, and then the reserved cutting allowance is cut off by a cutter, so that the separation of the first die body 10 and the second die body 20 is realized, the processing process is not easy to deform, the step difference is not easy to generate at the joint of the first die body 10 and the second die body 20, and the die precision and the product precision are ensured.

The novel innovation point of the utility model is that: when the product is cooled and solidified in the die cavity 40, as the thermal expansion coefficient and the cold contraction coefficient of the die are larger than those of the product, the product can be mutually extruded with the inner wall of the die cavity 40, and the elastic connecting piece 30 can enable the first die body 10 and the second die body 20 to have elastic displacement in the splicing direction, so that under the mutual extrusion of the product and the inner wall of the die cavity 40, the first die body 10 and the second die body 20 can elastically displace to prop up the die cavity 40 to adapt to the size of the product, the extrusion force of the inner wall of the die cavity 40 and the product is reduced, thereby effectively eliminating the internal stress of the product caused by thermal expansion and cold contraction, and improving the quality of the product. When demolding is carried out, only the joint of the first mold body 10 and the second mold body 20 is pried by using a tool, the first mold body 10 and the second mold body 20 are elastically displaced, and the mold cavity 40 is pried, so that a product can be conveniently taken out from the mold cavity 40; compared with the related art, the mold has less blocks, simpler processing and lower processing cost; when in demolding, the product can be conveniently taken out of the mold cavity 40 by prying the product along the edge of the first groove, complex disassembly and assembly work are not needed, the demolding is convenient, and the production efficiency can be effectively improved; when the product is cooled and solidified in the die cavity 40, the first die body 10 and the second die body 20 can elastically displace to reduce the extrusion force between the inner wall of the die cavity 40 and the product, so that the internal stress of the product caused by thermal expansion and cold contraction can be effectively eliminated, and the quality of the product is improved.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (10)

1. A mold, comprising:

a first die body (10) provided with a first groove;

A second die body (20) provided with a second groove, and the side parts of the first die body (10) and the second die body (20) are spliced, so that the first groove and the second groove are spliced with each other to form a die cavity (40);

And the elastic connecting piece (30) is suitable for elastically connecting the first die body (10) and the second die body (20) so that the first die body (10) and the second die body (20) have elastic displacement in the splicing direction.

2. The mould according to claim 1, characterized in that said elastic connection (30) comprises:

The guide post (300) is slidably arranged on the second die body (20) in a penetrating manner along the splicing direction, and one end of the guide post (300) penetrating through the second die body (20) is fixedly connected with the first die body (10);

The limiting part (301) is fixedly connected to one end, far away from the first die body (10), of the guide column (300);

And an elastic body (302) having one end elastically abutting against the second mold body (20) and the other end elastically abutting against the limit portion (301).

3. The mold according to claim 2, characterized in that the elastomer (302) comprises a spring;

The spring is sleeved on the guide post (300), and two ends of the spring are respectively elastically abutted against the second die body (20) and the limiting part (301).

4. The mold according to claim 2, characterized in that the elastomer (302) is made of an elastic rubber material.

5. The mold according to claim 2, characterized in that the second mold body (20) is provided with a stepped counterbore (200);

The guide post (300) is arranged in the step counter bore (200) in a penetrating mode, the elastic body (302) is located in the step counter bore (200), and one end, away from the limiting part (301), of the elastic body (302) is elastically abutted to the step surface of the step counter bore (200).

6. The mould according to claim 2, characterized in that the guide post (300) is screwed with the first mould body (10); or the limit part (301) is in threaded connection with the guide post (300).

7. The mould according to any one of claims 1 to 6, wherein at least one second mould body (20) is connected to at least one side of the first mould body (10), and wherein the mould cavity (40) is provided with at least one.

8. The mould according to claim 7, wherein said second mould body (20) has two sides and is connected to opposite sides of said first mould body (10);

The number of the mold cavities (40) is two.

9. A die as claimed in claim 3, wherein the springs comprise rectangular springs and round springs.

10. The mold according to claim 2, wherein the limit portion (301) is integrally formed to the guide post (300).