CN214982787U - Die set - Google Patents
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- CN214982787U CN214982787U CN202120403090.4U CN202120403090U CN214982787U CN 214982787 U CN214982787 U CN 214982787U CN 202120403090 U CN202120403090 U CN 202120403090U CN 214982787 U CN214982787 U CN 214982787U
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Abstract
The application provides a mold, which is used for molding a workpiece, wherein the workpiece comprises a molding part and a supporting part which are connected, the mold comprises a male mold and a female mold, the male mold is provided with a first cavity, and the molding part is accommodated in the first cavity; the female die is matched with the male die and is provided with a second cavity, the second cavity is provided with an inner top surface, an inner side surface and an inner bottom surface, the inner side surface is positioned between the inner top surface and the inner bottom surface and is connected with the inner top surface and the inner bottom surface, the supporting part is contained in the second cavity, the inner side surface is abutted with the supporting part to form a tangent line, the included angle between the tangent line and the die film-closing direction is an acute angle, and gaps are reserved between the inner bottom surface and the supporting part and between the inner top surface and the supporting part. This application is tangent with the supporting part through the medial surface, and all has the clearance between interior bottom surface and interior top surface and the supporting part, makes the pressfitting region area of the inner wall contact in work piece and first chamber less to reduce the pressure that the work piece received.
Description
Technical Field
The application relates to the technical field of dies, in particular to a die for workpiece forming.
Background
In the prior art, the molding is often carried out by injection molding of plastic in a mold. In the insert molding process, it is necessary to first insert the workpiece (insert) into a mold and then to inject plastic around the workpiece to form an injection molded part, which typically includes the workpiece and the plastic injected around the workpiece. Most of cavities of the existing die are arranged according to the shape of a workpiece in a copying manner, when the die is used for film combination, the die is in direct surface contact with the workpiece, a reserved gap is not reserved between the die and the workpiece, and when the die is used for injection molding, the temperature of the die is high, the temperature of the workpiece is low, so that the workpiece is easily heated to expand and is irreversibly deformed under the extrusion of the die; when plastics are injected, the workpiece is subjected to injection pressure, so that the workpiece is attached to the mold, the workpiece is clamped in the mold, and the yield of injection molding parts is influenced.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is necessary to provide a mold to solve the above problems.
An embodiment of the present application provides a mold for molding a workpiece, the workpiece includes a molding portion and a supporting portion that are connected, the mold includes:
the male die is provided with a first cavity, and the forming part is accommodated in the first cavity;
the female die is matched with the male die and is provided with a second cavity, the second cavity is provided with an inner top surface, an inner side surface and an inner bottom surface, the inner side surface is positioned between the inner top surface and the inner bottom surface and is connected with the inner top surface and the inner bottom surface, the supporting part is contained in the second cavity, the inner side surface is abutted with the supporting part to form a tangent line, the included angle between the tangent line and the die film-closing direction is an acute angle, and gaps are reserved between the inner bottom surface and the supporting part and between the inner top surface and the supporting part.
Further, the included angle is θ, and the following ranges are satisfied:
40°<θ<60°。
furthermore, the supporting part is provided with a supporting surface, the supporting surface and the inner side surface are both curved surfaces, and the inner side surface is tangent to the supporting surface.
Furthermore, the supporting part is provided with a supporting surface, the supporting surface comprises a side surface and a top surface which are connected, the side surface and the top surface are planes, the inner side surface is a curved surface, the intersection of the side surface and the top surface is tangent to the inner side surface, a gap is formed between the inner bottom surface and the side surface, and a gap is formed between the inner top surface and the top surface.
Further, the supporting part is provided with a supporting surface, the supporting surface comprises a side surface and a top surface which are connected, the side surface is a curved surface, the top surface is a plane, the inner side surface is a curved surface or a plane, the side surface is tangent to the inner side surface, a gap is formed between the inner bottom surface and the side surface, and a gap is formed between the inner top surface and the top surface.
Further, the supporting part is provided with a supporting surface, the supporting surface comprises a side surface and a top surface which are connected, the side surface is a plane, the top surface is a curved surface, the inner side surface is a curved surface or a plane, the intersection of the side surface and the top surface is tangent to the inner side surface, a gap is formed between the inner bottom surface and the side surface, and a gap is formed between the inner top surface and the top surface.
Further, the mold further comprises:
the mold core is arranged in the first cavity and used for supporting the forming part, an injection molding cavity is formed by the mold core and the inner wall of the first cavity in a surrounding mode, and the injection molding cavity is used for limiting the shape of the plastic to be injected.
Furthermore, the mold core comprises a first connecting portion and a bearing portion, the first connecting portion is connected with the inner wall of the first cavity, the bearing portion is used for supporting the forming portion, and the bearing portion and the inner wall of the first cavity form the injection molding cavity.
Further, the first cavity is a through hole, and the core is provided with a suction hole penetrating through the first connecting part and the bearing part.
Furthermore, the molding part comprises a clamping part and a second connecting part, the second connecting part is connected with the clamping part and the supporting part, the clamping part is clamped in the air suction hole, and the second connecting part is sleeved with plastic in the injection molding cavity.
The application provides a mould, it is tangent with the supporting part through the medial surface, and all have the clearance between interior bottom surface and interior top surface and the supporting part, the inner wall and the supporting part line contact in the first chamber of master model, when the mould compound die, the work piece receives the pressfitting power of side direction, the pressfitting regional area of the inner wall contact in work piece and first chamber is less, in order to reduce the pressure that the work piece received, because there is the clearance between supporting part and the interior top surface, the work piece can be towards the direction deformation that is close to interior top surface, in order to guide work piece deformation direction, prevent to mould plastics the shaping portion of back work piece and hold in the public mould owing to warping, and then influence the yield of injection molding.
Drawings
Fig. 1 is a schematic structural diagram of a mold in a first embodiment of the present application.
Fig. 2 is an exploded view of the mold shown in fig. 1.
Fig. 3 is a cross-sectional view taken along iii-iii of the mold shown in fig. 1.
FIG. 4 is a cross-sectional view of a workpiece according to a second embodiment of the present application.
FIG. 5 is a cross-sectional view of a workpiece according to a third embodiment of the present application.
FIG. 6 is a cross-sectional view of a workpiece according to a fourth embodiment of the present application.
FIG. 7 is a cross-sectional view of a workpiece according to a fifth embodiment of the present application.
Description of the main elements
Mold 100
Male die 10
The forming part 210
Supporting part 220
Inner top surface 222
Supporting surface 221
Bearing part 34
Catch 211
Second connecting portion 212
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting 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, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
Referring to fig. 1, a first embodiment of the present application provides a mold 100 for molding a workpiece, the mold 100 includes a male mold 10 and a female mold 20 adapted to the male mold 10, the female mold 20 and the male mold 10 are assembled to accommodate the workpiece therein, and then plastic is injected around the workpiece to at least partially wrap the workpiece with the plastic, thereby forming an injection molded part.
Referring to fig. 2 and fig. 3, in the present embodiment, the workpiece 200 includes a forming portion 210 and a supporting portion 220 connected to each other, the male mold 10 has a first cavity 12, and the forming portion 210 is received in the first cavity 12; the female die 20 has a second cavity 22, the second cavity 22 has an inner top surface 222, an inner side surface 224 and an inner bottom surface 226, the inner side surface 224 is located between the inner top surface 222 and the inner bottom surface 226, the inner side surface 224 connects the inner top surface 222 and the inner bottom surface 226, the supporting portion 220 is received in the second cavity 22, the inner side surface 224 and the supporting portion 220 abut to form a tangent line, the tangent line forms an acute angle with the film-closing direction of the die 100, and gaps are formed between the inner bottom surface 226 and the supporting portion 220, and between the inner top surface 222 and the supporting portion 220.
Thus, the inner side surface 224 is tangent to the supporting portion 220, gaps are formed between the inner bottom surface 226 and the supporting portion 220, and gaps are formed between the inner top surface 222 and the supporting portion 220, the inner wall of the first cavity 12 of the female die 20 is in line contact with the supporting portion 220, and since the included angle between the tangent line and the direction of the die 100 when the die 100 is closed is an acute angle, the included angle between the acting force applied to the workpiece 200 by the tangent portion of the female die 20 to the supporting portion 220 and the film closing direction of the die 100 when the die 100 is closed is an acute angle. Compared with the prior art, the inner side wall of the first cavity is in surface contact with the supporting portion 220 according to the shape profiling of the workpiece, when the mold 100 is closed, the supporting portion 220 is in line contact with the inner wall of the first cavity 12, the workpiece 200 is subjected to lateral pressing force, the area of a pressing area where the workpiece 200 is in contact with the inner wall of the first cavity 12 is small, so that the pressure on the workpiece 200 is reduced, the workpiece can deform towards the direction close to the inner top surface 222 due to the gap between the supporting portion 220 and the inner top surface 222, so that the deformation direction of the workpiece is guided, and the forming portion 210 of the workpiece 200 after injection molding is prevented from being clamped in the male mold 10 due to deformation, so that the yield of injection molding parts is influenced.
In this embodiment, the supporting portion 220 is a semi-spherical shape, the supporting portion 220 has a supporting surface 221, the supporting surface 221 is a curved surface, and the inner sidewall of the second cavity 22 is formed by an inner top surface 222, an inner side surface 224 and an inner bottom surface 226 to form an irregular curved surface, and the irregular curved surface is spherical with the outer side of the supporting portion 220.
In this embodiment, the inner side surface 224 is a curved surface having a curvature smaller than that of the supporting surface 221, so that the inner side surface 224 is tangent to the supporting surface 221.
In an embodiment of the present invention, the mold 100 further includes a core 30, the core 30 is disposed in the first cavity 12 and is used for supporting the molding portion 210, an injection molding cavity 31 is defined by the core 30 and an inner wall of the first cavity 12, the injection molding cavity 31 is used for accommodating the plastic 300 and defining a shape of the plastic 300, so that the molded plastic 300 is connected to the molding portion 210.
Further, the core 30 includes a first connecting portion 32 and a bearing portion 34 connected, the first connecting portion 32 is connected with an inner wall of the first cavity 12, the bearing portion 34 is used for supporting the forming portion 210, and the bearing portion 34 and the inner wall of the first cavity 12 form the injection molding cavity 31.
In this embodiment, first connecting portion 32 and the inner wall butt in first chamber 12 can understand, and in other embodiments, first connecting portion 32 can pass through concave-convex structure, tenon fourth of the twelve earthly branches structure etc. with the inner wall in first chamber 12 and realize the joint.
In one embodiment, the first cavity 12 is a through hole, and the core 30 has a suction hole 36 penetrating the first connecting portion 32 and the carrying portion 34, and is communicated with a gas source through the suction hole 36 so as to suck gas.
Further, the first chamber 12 as a through hole is coaxial with the suction hole 36.
In an embodiment of the present application, an included angle between the tangent line and the direction of the mold 100 when the mold is closed is θ, and the included angle θ satisfies the following range:
40°<θ<60°；
the included angle in the range can ensure that the acting force of the fit of the workpiece 200 and the die 100 can limit the workpiece 200 but the workpiece 200 cannot be clamped by the core 30, so that the workpiece 200 is prevented from being damaged by overlarge acting force.
In an embodiment of the present invention, the forming portion 210 includes a retaining portion 211 and a second connecting portion 212, the second connecting portion 212 connects the retaining portion 211 and the supporting portion 220, the retaining portion 211 is retained in the air suction hole 36, and the second connecting portion 212 is sleeved with the plastic 300.
In this embodiment, the holding portion 211 and the second connecting portion 212 are both cylindrical, and the diameter of the second connecting portion 212 is larger than that of the holding portion 211. In other embodiments, the catch 211 may be other shapes, such as a polygonal shape.
Fig. 4 is a schematic cross-sectional view of a part of a workpiece according to a second embodiment of the present application. In this embodiment, the supporting portion 220 of the workpiece 200 has a trapezoidal cross section, the supporting surface 221 includes a side surface 223 and a top surface 225, both the side surface 223 and the top surface 225 are flat surfaces, an intersection 227 of the side surface 223 and the top surface 225 is tangent to the inner side surface 224, and the intersection 227 is a circular line.
In this embodiment, the inner side surface 224 is a curved surface, and the intersection 227 is tangent to the inner side surface 224, and a gap is formed between the inner bottom surface 226 and the side surface 223, and a gap is formed between the inner top surface 222 and the top surface 225.
It will be appreciated that in another embodiment, where the inner side surface 224 is planar, it may be achieved that the intersection 227 is tangential to the inner side surface 224 with a gap between the inner bottom surface 226 and the side surface 223 and a gap between the inner top surface 222 and the top surface 225.
Referring to fig. 5, which is a schematic cross-sectional view of a part of a workpiece according to a third embodiment of the present disclosure, in this embodiment, the workpiece 200 has an irregular semicircular shape, the supporting surface 221 includes a side surface 223 and a top surface 225, the side surface 223 is a curved surface, the top surface 225 is a flat surface, and the side surface 223 is tangent to the inner side surface 224.
In this embodiment, the inner side surface 224 is a curved surface, which can realize that the side surface 223 is tangent to the inner side surface 224, and a gap is formed between the inner bottom surface 226 and the side surface 223, and a gap is formed between the inner top surface 222 and the top surface 225.
It will be appreciated that in another embodiment, where the inner side surface 224 is planar, it may be achieved that the side surface 223 is tangent to the inner side surface 224 with a gap between the inner bottom surface 226 and the side surface 223 and a gap between the inner top surface 222 and the top surface 225.
Referring to fig. 6, which is a partial cross-sectional view of a workpiece according to a fourth embodiment of the present disclosure, in this embodiment, the workpiece 200 includes a supporting surface 221, the supporting surface 221 includes a side surface 223 and a top surface 225, the side surface 223 is a flat surface, the top surface 225 is a curved surface, and an intersection 227 of the side surface 223 and the top surface 225 is tangent to an inner side surface 224.
In this embodiment, the inner side surface 224 is a curved surface, and the intersection 227 is tangent to the inner side surface 224, and a gap is formed between the inner bottom surface 226 and the side surface 223, and a gap is formed between the inner top surface 222 and the top surface 225.
It will be appreciated that in another embodiment, where the inner side surface 224 is planar, it may be achieved that the intersection 227 is tangential to the inner side surface 224 with a gap between the inner bottom surface 226 and the side surface 223 and a gap between the inner top surface 222 and the top surface 225.
Referring to fig. 7, which is a schematic cross-sectional view of a part of a workpiece according to a fourth embodiment of the present disclosure, in this embodiment, the workpiece 200 includes a supporting surface 221, the supporting surface 221 is formed by splicing a square shape and an arc shape, the supporting surface 221 includes a side surface 223 and a top surface 225, the side surface 223 is a plane, the top surface 225 is a curved surface, an intersection 227 of the side surface 223 and the top surface 225 is tangent to an inner side surface 224, and the intersection 227 is a circular line.
In this embodiment, the inner side surface 224 is a curved surface, and the intersection 227 is tangent to the inner side surface 224, and a gap is formed between the inner bottom surface 226 and the side surface 223, and a gap is formed between the inner top surface 222 and the top surface 225.
It will be appreciated that in another embodiment, where the inner side surface 224 is planar, it may be achieved that the intersection 227 is tangential to the inner side surface 224 with a gap between the inner bottom surface 226 and the side surface 223 and a gap between the inner top surface 222 and the top surface 225.
It will be evident to those skilled in the art that the present application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present application and not for limiting, and although the present application is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present application without departing from the spirit and scope of the technical solutions of the present application.
Claims (10)
1. A mold for molding a workpiece, the workpiece including a molding portion and a supporting portion that are connected, the mold comprising:
the male die is provided with a first cavity, and the forming part is accommodated in the first cavity;
the female die is matched with the male die and is provided with a second cavity, the second cavity is provided with an inner top surface, an inner side surface and an inner bottom surface, the inner side surface is positioned between the inner top surface and the inner bottom surface and is connected with the inner top surface and the inner bottom surface, the supporting part is contained in the second cavity, the inner side surface is abutted with the supporting part to form a tangent line, an included angle between the tangent line and the die film-closing direction is an acute angle, and gaps are reserved between the inner bottom surface and the supporting part and between the inner top surface and the supporting part.
2. The mold of claim 1, wherein the included angle θ satisfies the following range:
40°<θ<60°。
3. the mold of claim 2, wherein the support portion has a support surface, the support surface and the inner side surface are both curved, and the inner side surface is tangent to the support surface.
4. The mold of claim 2, wherein the support portion has a support surface comprising a side surface and a top surface connected, the side surface and the top surface being both planar, the inner side surface being curved or planar, the intersection of the side surface and the top surface being tangent to the inner side surface, a gap being provided between the inner bottom surface and the side surface, and a gap being provided between the inner top surface and the top surface.
5. The mold of claim 2, wherein the support portion has a support surface comprising a side surface and a top surface that are connected, the side surface being curved, the top surface being planar, the inner side surface being curved or planar, the side surface being tangent to the inner side surface, a gap being between the inner bottom surface and the side surface, and a gap being between the inner top surface and the top surface.
6. The mold of claim 2, wherein the support portion has a support surface comprising a side surface and a top surface connected, the side surface being planar, the top surface being curved, the inner side surface being curved or planar, the intersection of the side surface and the top surface being tangent to the inner side surface, a gap being provided between the inner bottom surface and the side surface, and a gap being provided between the inner top surface and the top surface.
7. The mold of claim 2, wherein the mold further comprises:
the mold core is arranged in the first cavity and used for supporting the forming part, an injection molding cavity is formed by the mold core and the inner wall of the first cavity in a surrounding mode, and the injection molding cavity is used for limiting the shape of the plastic to be injected.
8. The mold of claim 7, wherein the core comprises a first connecting portion and a bearing portion connected, the first connecting portion being connected to an inner wall of the first cavity, the bearing portion supporting the molding portion, the bearing portion and the inner wall of the first cavity forming the injection molding cavity.
9. The mold of claim 8, wherein the first cavity is a through-hole and the core has a suction hole extending through the first connecting portion and the carrier portion.
10. The mold of claim 9, wherein the molding portion comprises a retaining portion and a second connecting portion, the second connecting portion connects the retaining portion and the supporting portion, the retaining portion is retained in the air suction hole, and the plastic in the injection cavity is sleeved on the second connecting portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120403090.4U CN214982787U (en) | 2021-02-23 | 2021-02-23 | Die set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120403090.4U CN214982787U (en) | 2021-02-23 | 2021-02-23 | Die set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214982787U true CN214982787U (en) | 2021-12-03 |
Family
ID=79158156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120403090.4U Active CN214982787U (en) | 2021-02-23 | 2021-02-23 | Die set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214982787U (en) |
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2021
- 2021-02-23 CN CN202120403090.4U patent/CN214982787U/en active Active
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