CN213291152U - Male die assembly and injection mold - Google Patents

Abstract

The application belongs to the technical field of injection mold structures, and particularly relates to a male mold assembly injection mold. In the male die assembly, a first support member is provided on a first mounting surface of a core part, and a first side portion of the first support member has a thickness greater than a thickness of a second side portion. The core component provided with the first supporting piece is arranged in the containing groove of the male die frame, the first side portion is abutted to the bottom of the inner surface of the frame portion, the second side portion is arranged at an interval with the top of the inner surface of the frame portion, most thrust of the core component is transmitted to the bottom of the frame portion through the first side portion of the first supporting piece, and the top of the frame portion is stressed slightly or unstressed. The male die assembly transfers the position of the core component, which pushes the male die frame, to the bottom of the frame part, so that the whole frame part is stretched, the contact tightness between the top of the side surface of the core component and the top of the inner surface of the frame part is reduced, the transverse displacement of the core component is reduced, the product quality is improved, and the condition that the deformation of the frame part of the traditional die is large to cause the large displacement of the core component, so that the product has a lot of peaks is reduced.

Description

Male die assembly and injection mold

Technical Field

The application belongs to the technical field of injection mold structures, and particularly relates to a male mold assembly injection mold.

Background

In a conventional injection mold, referring to fig. 1, a punch assembly includes a punch frame 10 'and a core part 20', and the core part 20 'is mounted in the punch frame 10'. In the injection molding process, plastic in a molten state is injected into the core part 20 ', and the frame portion 12' of the punch frame 10 'is easily deformed, so that the core part 20' is laterally displaced, and defective products such as burrs are generated.

Disclosure of Invention

An object of the embodiment of the application is to provide a terrace die subassembly and injection mold to the terrace die frame portion that solves among the current injection mold is out of shape easily and then arouses the product to have the technical problem of criticizing the cutting edge of a knife or a sword.

The embodiment of the application provides a terrace die component, includes:

the male die frame comprises a supporting part and a frame part connected to the periphery of the supporting part, and a containing groove is formed by the surrounding of the supporting part and the frame part;

the core part can be accommodated in the accommodating groove and is provided with a first mounting surface which corresponds to the inner surface of the frame part;

the first supporting piece is arranged on the first mounting surface and provided with a first side part and a second side part which are arranged oppositely, the first side part is arranged close to the bottom surface of the accommodating groove, and the second side part is arranged close to the opening of the accommodating groove; the thickness of the first side part is larger than that of the second side part in the direction perpendicular to the first mounting surface;

when the core part is accommodated in the accommodating groove, the first side part abuts against the inner surface of the frame part, and the second side part and the inner surface of the frame part are arranged at intervals.

Optionally, the first mounting surface is provided with at least one first mounting groove, and the first support member is correspondingly mounted in the first mounting groove.

Optionally, a screw hole is formed in the first mounting surface, a through hole corresponding to the screw hole is formed in the first supporting piece, the first supporting piece is fixed to the first mounting surface through a first fastening piece, and the first fastening piece penetrates through the through hole, is connected with the screw hole and is screwed to the mold core.

Optionally, the first support is sheet-like, the thickness of the first support ranging from 2 to 10 mm.

Optionally, the difference in thickness between the first side portion and the second side portion ranges from 0.1 to 0.5 mm.

Optionally, the core part comprises a first core and a second core, one side of the first core abuts one side of the second core, and the first mounting face is formed on the first core and/or the second core.

Optionally, the second core has a second mounting surface disposed corresponding to the inner surface of the frame portion, the first mounting surface and the second mounting surface are disposed opposite to each other, the second mounting surface is provided with at least one second mounting groove, and a second supporting member is correspondingly mounted in the second mounting groove; the thicknesses of the second supporting pieces are equal in a direction perpendicular to the second mounting surface.

Optionally, the second support member is mounted to the second mounting surface by a second fastener.

Optionally, the core part comprises a first core, a second core and a third core which are arranged in sequence, wherein one side of the first core is abutted with one side of the second core, one side of the second core is abutted with one side of the third core, and the first mounting surface is formed on the first core and/or the third core.

The embodiment of the application provides an injection mold, including foretell terrace die subassembly.

One or more technical solutions provided in the embodiments of the present application have at least one of the following technical effects: in the male die assembly, a first support member is provided on a first mounting surface of a core part, and a first side portion of the first support member has a thickness greater than a thickness of a second side portion. The core component provided with the first supporting piece is arranged in the containing groove of the male die frame, the first side portion is abutted to the bottom of the inner surface of the frame portion, and the second side portion is arranged at a distance from the top of the inner surface of the frame portion, so that most of thrust of the core component is transmitted to the bottom of the frame portion through the first side portion of the first supporting piece, and the top of the frame portion is stressed slightly or unstressed. Compared with the situation that the large thrust is formed on the top of the core component of the traditional mold to the male mold frame to cause the excessive deformation of the frame, the position of the core component for the thrust of the male mold frame is transferred to the bottom of the frame to produce the stretching effect on the whole frame, the contact tightness between the top of the side face of the core component and the top of the inner surface of the frame is reduced, the transverse displacement of the core component is reduced, the product quality is improved, and the situation that the deformation of the frame of the traditional mold is large to cause the large displacement of the core component to cause the formation of the product in batches is reduced.

The injection mold with the male mold assembly also reduces the phenomenon that the frame part of the traditional mold deforms greatly, so that the displacement of the core part is large, and the phenomenon that the product has burrs is avoided.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a schematic structural view of a male die assembly provided in the conventional art;

FIG. 2 is a perspective assembly view of a male die assembly provided in an embodiment of the present application;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

figure 4 is an enlarged fragmentary view of the male die assembly of figure 3;

figure 5 is an exploded perspective view of the male die assembly of figure 2;

figure 6 is a further exploded perspective view of the male die assembly of figure 5;

figure 7 is another angular exploded perspective view of the male die assembly of figure 2.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In the description of the embodiments of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like refer to orientations and positional relationships illustrated in the drawings, which are used for convenience in describing the embodiments of the present application and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the embodiments of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present application, unless otherwise specifically stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

Referring to fig. 1, in the conventional punch assembly, a core part 20 'is installed in a punch frame 10'. To facilitate the assembly of the core part 20 ' into the punch frame 10 ', the bottom length and width dimensions of the core part 20 ' are correspondingly set smaller than the top length and width dimensions thereof. During the injection molding process, the top of the side of the core part 20 ' can give a large pushing force F ' to the top of the frame 12 ' of the cam frame 10 ' under the action of the flowing plastic, which causes the frame 12 ' of the cam frame 10 ' to deform too much, which can cause the core part 20 ' to displace laterally, thereby causing the product to generate a burr.

In order to solve the above problems, the present embodiment provides a punch assembly, which includes a punch frame 10, a core part 20, and a first support 30, referring to fig. 2 to 5. The male mold frame 10 includes a support portion 11 and a frame portion 12 connected to the periphery of the support portion 11, and the support portion 11 and the frame portion 12 enclose a receiving groove 13. The core part 20 can be accommodated in the accommodating groove 13, and the core part 20 has a first mounting surface 21 provided corresponding to the inner surface of the frame 12. The first support 30 is mounted on the first mounting surface 21, the first support 30 has a first side portion 30a and a second side portion 30b which are oppositely arranged, the first side portion 30a is arranged near the bottom surface of the accommodating groove 13, and the second side portion 30b is arranged near the opening of the accommodating groove 13; with reference to fig. 4, in the direction perpendicular to the first mounting surface 21, the thickness D1 of the first side portion 30a is greater than the thickness D2 of the second side portion 30 b; when the core component 20 is accommodated in the accommodating groove 13, the first side portion 30a abuts against the inner surface of the frame portion 12, and the second side portion 30b is spaced apart from the inner surface of the frame portion 12.

In the male die assembly provided by the embodiment of the application, the first support 30 is arranged on the first mounting surface 21 of the core part 20, and the thickness D1 of the first side part 30a in the first support 30 is larger than the thickness D2 of the second side part 30 b. The core member 20 with the first support 30 is installed in the receiving slot 13 of the male mold frame 10, such that the first side portion 30a abuts against the bottom of the inner surface of the frame 12, and the second side portion 30b is spaced apart from the top of the inner surface of the frame 12, such that most of the thrust force F of the core member 20 is transmitted to the bottom of the frame 12 through the first side portion 30a of the first support 30, and the top of the frame 12 is under little or no force. Compared with the situation that the large thrust is formed on the male die frame by the top of the core part of the traditional die to cause the excessive deformation of the frame, the position of the thrust of the core part 20 on the male die frame 10 is transferred to the bottom of the frame 12 to produce the stretching effect on the whole frame 12, the contact tightness between the top of the side surface of the core part 20 and the top of the inner surface of the frame 12 is reduced, the transverse displacement of the core part 20 is reduced, the product quality is improved, and the situation that the displacement of the core part is large and the product is prone to cutting off caused by the large deformation of the frame of the traditional die is reduced.

The first mounting surface 21 of the core member 20 may be any one side surface or two or more side surfaces of the core member 20, except for the top surface and the bottom surface of the core member 20. The method is adjusted according to actual conditions, so that unqualified phenomena such as batch production and the like of products are reduced.

In another embodiment of the present application, please refer to fig. 4 and 6, the first mounting surface 21 is provided with at least one first mounting groove 22, and the first mounting groove 22 is correspondingly provided with the first supporting element 30. This facilitates positioning and assembling of the first support member 30, and improves assembling efficiency. In practical applications, first, the dimensions of the bottom of the frame 12 and the dimensions of the core part 20 are accurately measured, such as the length dimension of the slot 13 of the frame 12 and the length dimension of the core part 20; then, according to the measurement result, the first support member 30 having a certain thickness difference is processed; next, the first supporter 30 is fitted into the first mounting groove 22; finally, the core member 20 equipped with the first support member 30 is fitted into the receiving groove 13 of the punch frame 10 such that the first side portion 30a of the first support member 30 is in contact with the bottom of the inner surface of the frame 12 and the second side portion 30b is spaced from the top of the inner surface of the frame 12.

Illustratively, two first mounting grooves 22 are formed on the first mounting surface 21 at intervals, and accordingly, two first supporting members 30 are mounted, so that the contact area with the bottom of the inner surface of the frame 12 can be increased, and when the core member 20 is mounted in the receiving groove 13 of the male mold frame 10, the first side portions 30a of the first supporting members 30 can better abut against the bottom of the inner surface of the frame 12, which facilitates the transmission of most of the thrust force F of the core member 20 to the bottom of the frame 12 through the first side portions 30a of the first supporting members 30. The number of the first mounting grooves 22 provided on the first mounting surface 21 is set as required.

In another embodiment of the present application, please refer to fig. 5 and 6, a screw hole 211 is formed on the first mounting surface 21, a through hole 31 corresponding to the screw hole 211 is formed on the first supporting member 30, the first supporting member 30 is fixed on the first mounting surface 21 by a first fastening member 41, and the first fastening member 41 passes through the through hole 31 and the screw hole 211 and is screwed to the core. This facilitates the fitting of the first support 30 to the first mounting surface 21. If the first supporting member 30 is damaged or a new first supporting member 30 needs to be replaced in the production process, the first fastening member 41 can be adjusted at any time, so that the replacement is convenient, and the working efficiency is improved. Wherein the first fastening member 41 may be a screw.

In another embodiment of the present application, referring to fig. 4 and 6, the first supporting member 30 is in a sheet shape, and the thickness of the first supporting member 30 ranges from 2mm to 10mm, which is specifically set as required. The first support member 30 is easy to manufacture and compact.

In another embodiment of the present application, please refer to fig. 4, the thickness difference between the first side 30a and the second side 30b ranges from 0.1 to 0.5 mm. The thickness difference is adjusted according to the actual conditions, and in the actual production, the first supporting members 30 with different thickness sizes are needed to face different models of moulds, but the thickness is basically adjusted in the range. Of course, in addition to the specially customized mold, the range of the proper thickness difference of the first supporting member 30 can also exceed this range, so as to effectively reduce the fraction defective of the product. Illustratively, the thickness D1 of the first side 30a of the first support 30 is 6.5mm and the thickness D2 of the second side 30b is 6.3 mm.

In another embodiment of the present application, referring to fig. 2, 3, 5 and 6, the core part 20 includes a first core 20a and a second core 20b, one side of the first core 20a abuts against one side of the second core 20b, and the first mounting surface 21 is formed on the first core 20a and/or the second core 20 b. In the present embodiment, two cores are disposed side by side in the receiving groove 13 of the punch frame 10, which facilitates the manufacture of the core part 20. In practice, there is a gap between the first core 20a and the second core 20b, for example, a gap within 0.02mm is acceptable for PP plastics. The larger the gap between the first core 20a and the second core 20b is, the larger the pushing force to the frame 12 of the punch frame 10 is, the more the first supporting members 30 need to be mounted on the first core 20a and the second core 20b, respectively, so as to reduce the contact tightness between the top of the side surface of the core member 20 and the top of the inner surface of the frame 12, avoid the excessive deformation of the frame 12 to cause the displacement increase of the core member 20, and improve the product quality.

Further, it is also possible that the core part 20 includes two first cores 20a and two second cores 20b, four cores being arranged in an array. The first supporting piece 30 is arranged at a required position, so that the position of the core part 20, which pushes the male die frame 10, is transferred to the bottom of the frame part 12, the transverse displacement of the core part 20 is reduced, and the product quality is improved.

In another embodiment of the present application, please refer to fig. 7, the second core 20b has a second mounting surface 23 disposed corresponding to the inner surface of the frame 12, the first mounting surface 21 is disposed opposite to the second mounting surface 23, the second mounting surface 23 has at least one second mounting groove 24, and a second supporting member 50 is correspondingly mounted in the second mounting groove 24; the thicknesses of the second supports 50 in the direction perpendicular to the second mounting surface 23 are equal. When the gap between the first core 20a and the second core 20b is within the acceptable range, the thrust of the core member 20 against the frame portion 12 of the cam frame 10 is not so large, and the first support member 30 may be mounted on the first mounting surface 21, and the second support member 50 having the same thickness may be mounted on the second mounting surface 23. Wherein, the second supporting member 50 is in a sheet shape, and the thickness of the second supporting member 50 ranges from 2 to 10mm, and is specifically set as required. The second supporting member 50 is easy to process and compact.

In another embodiment of the present application, referring to fig. 7, the second supporting member 50 is mounted on the second mounting surface 23 by the second fastening member 42. This facilitates assembly and replacement of the second support member 50. Wherein the second fastening member 42 may be a screw.

In another embodiment of the present application, the core part includes a first core, a second core, and a third core arranged in series, one side of the first core abuts one side of the second core, one side of the second core abuts one side of the third core, and the first mounting surface is formed on the first core and/or the third core. In this scheme, set up three core side by side in the storage tank of convex mould frame, the manufacturing of the core part of being convenient for like this. Specifically, the first support member may be disposed on a side surface of the first core, the first support member may be disposed on a side surface of the third core, and the first support members may be disposed on opposite side surfaces of the first core and the third core, respectively.

In another embodiment of the present application, referring to fig. 2 to 4, an injection mold is provided, which includes the above-mentioned male mold assembly. Since the injection mold adopts all the technical solutions of all the embodiments, all the beneficial effects brought by the technical solutions of the embodiments are also achieved, and are not repeated herein.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims (10)

1. A punch assembly, comprising:

the male die frame comprises a supporting part and a frame part connected to the periphery of the supporting part, and a containing groove is formed by the surrounding of the supporting part and the frame part;

the core part can be accommodated in the accommodating groove and is provided with a first mounting surface which corresponds to the inner surface of the frame part;

the first supporting piece is arranged on the first mounting surface and provided with a first side part and a second side part which are arranged oppositely, the first side part is arranged close to the bottom surface of the accommodating groove, and the second side part is arranged close to the opening of the accommodating groove; the thickness of the first side part is larger than that of the second side part in the direction perpendicular to the first mounting surface;

when the core part is accommodated in the accommodating groove, the first side part abuts against the inner surface of the frame part, and the second side part and the inner surface of the frame part are arranged at intervals.

2. A punch assembly as defined in claim 1, wherein: the first mounting surface is provided with at least one first mounting groove, and the first supporting piece is correspondingly mounted in the first mounting groove.

3. A punch assembly as defined in claim 1, wherein: the first mounting surface is provided with a screw hole, the first supporting piece is provided with a through hole corresponding to the screw hole, the first supporting piece is fixed on the first mounting surface through a first fastening piece, and the first fastening piece penetrates through the through hole and the screw hole and is in threaded connection with the mold core.

4. A punch assembly as defined in claim 1, wherein: the first support is sheet-shaped, and the thickness of the first support ranges from 2 to 10 mm.

5. A punch assembly as claimed in claim 4, wherein: the difference in thickness between the first side portion and the second side portion ranges from 0.1 to 0.5 mm.

6. A punch assembly according to any one of claims 1 to 5, wherein: the core part comprises a first core and a second core, one side of the first core is abutted against one side of the second core, and the first mounting surface is formed on the first core and/or the second core.

7. A punch assembly as claimed in claim 6, wherein: the second core is provided with a second mounting surface which is arranged corresponding to the inner surface of the frame part, the first mounting surface and the second mounting surface are oppositely arranged, the second mounting surface is provided with at least one second mounting groove, and a second supporting piece is correspondingly mounted in the second mounting groove; the thicknesses of the second supporting pieces are equal in a direction perpendicular to the second mounting surface.

8. A punch assembly as defined in claim 7 wherein: the second support member is mounted to the second mounting surface by a second fastener.

9. A punch assembly according to any one of claims 1 to 5, wherein: the core part comprises a first core, a second core and a third core which are sequentially arranged, wherein one side of the first core is abutted against one side of the second core, one side of the second core is abutted against one side of the third core, and the first mounting surface is formed on the first core and/or the third core.

10. An injection mold, its characterized in that: comprising a punch assembly according to any one of claims 1 to 9.

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