Injection mold

Abstract

The utility model discloses an injection mold which comprises a front mold body, a rear mold body, an upper mold body and a lower mold body. The rear mold is arranged corresponding to the front mold, an elastic block is arranged on one side, facing the front mold, of the rear mold, and the elastic block is selectively attached to the front mold and is provided with a second mounting groove which is concavely arranged towards the interior; one end of the positioning assembly is accommodated in the second mounting groove and is connected with the elastic block, and the other end of the positioning assembly extends towards the front mold and is matched with the first mounting groove; wherein the injection molding cavity is defined by the front mold, the rear mold and the elastic block, a first wall face is formed on the side, facing the injection molding cavity, of the front mold, a second wall face is formed on the side, facing the injection molding cavity, of the elastic block, and the first wall face and the second wall face are arranged in a coplanar mode. According to the injection mold provided by the embodiment of the utility model, the injection mold can eliminate the wire clamping of the injection molded part and ensure the product percent of pass.

Description

Technical Field

[0001] This application relates to the field of molds, and more particularly to an injection mold. Background Art

[0002] In related technologies, most of the exterior plastic parts of vehicles are injection molded. In order to reduce costs, the number of plastic parts is usually reduced. However, the reduction in the number of plastic parts will lead to an increase in the complexity of single-piece injection molded parts and the corresponding mold structure. The complex mold structure will cause the problem of clamping lines in the injection molded parts, making it difficult to meet the requirements. Summary of the Utility Model

[0003] This application aims to solve at least one of the technical problems existing in the prior art. To this end, an object of this application is to provide an injection mold that can eliminate the clamping lines of injection molded parts and ensure the qualified rate of products.

[0004] The injection mold according to an embodiment of this application includes: a front mold, on which a first installation groove recessed inward is formed; a rear mold, which is arranged corresponding to the front mold, and a spring block is arranged on the side of the rear mold facing the front mold. The spring block can selectively be attached to the front mold and is provided with a second installation groove recessed inward; a positioning component, one end of which is received in the second installation groove and connected to the spring block, and the other end of the positioning component extends towards the front mold and cooperates with the first installation groove; wherein the front mold, the rear mold and the spring block define the injection cavity. A first wall surface is formed on the side of the front mold facing the injection cavity, and a second wall surface is formed on the side of the spring block facing the injection cavity. The first wall surface and the second wall surface are coplanar.

[0005] The injection mold according to an embodiment of this application is provided with a positioning component. The first installation groove and the second installation groove that cooperate with the positioning component are respectively formed on the front mold and the spring block. After the front mold and the rear mold are closed, the positioning component can cooperate with the first installation groove and the second installation groove respectively to make the first wall surface of the front mold and the second wall surface of the spring block coplanar, ensuring that there are no clamping lines on the surface of the injection molded part after injection molding. Compared with the prior art, no additional trimming is required, which ensures the qualified rate of products, reduces costs, and shortens the product delivery cycle.

[0006] In some embodiments of this application, the positioning component includes: a positioning block, a part of which is received in the first installation groove, and the other part of which is received in the second installation groove. A positioning hole extending axially is formed in the positioning block, and a stepped surface is formed on the inner wall of the positioning hole; a positioning screw, which penetrates through the positioning hole, one end of the positioning screw abuts against the stepped surface, and the other end of the positioning screw is connected to the spring block.

[0007] In some embodiments of the present application, the depth of the first installation groove is D1 and satisfies: 10 mm ≤ D1 ≤ 15 mm.

[0008] In some embodiments of the present application, the depth of the second installation groove is D2 and satisfies: 10 mm ≤ D2 ≤ 15 mm.

[0009] In some embodiments of the present application, the shortest distance between the inner wall of the second installation groove and the second wall surface is L and satisfies: 8 mm ≤ L ≤ 12 mm.

[0010] In some embodiments of the present application, a third installation groove is further formed in the elastic block and is recessed inward, and a fourth installation groove corresponding to the third installation groove is formed on the rear mold. The injection mold further includes: an elastic component, a part of the elastic component is received in the third installation groove and abuts against the inner wall of the third installation groove, and another part of the elastic component is received in the fourth installation groove and abuts against the inner wall of the fourth installation groove.

[0011] In some embodiments of the present application, the elastic component includes: a guiding member, a part of the guiding member is received in the third installation groove, and another part of the guiding member is received in the fourth installation groove; an elastic member, the elastic member is sleeved on the outer wall of the guiding member, and one end of the elastic member abuts against the inner wall of the third installation groove, and the other end of the elastic member abuts against the inner wall of the fourth installation groove.

[0012] In some embodiments of the present application, a first clamping member is further provided on the side of the elastic block facing the front mold, and a second clamping member corresponding to the first clamping member and engaging therewith is provided on the front mold. The second clamping member is adapted to pull the first clamping member when the front mold and the rear mold are separated.

[0013] In some embodiments of the present application, the first clamping member is configured as one of a hook and a tongue, and the second clamping member is configured as the other of the hook and the tongue.

[0014] In some embodiments of the present application, a wear-resistant plate is further provided on the side of the elastic block facing the rear mold.

[0015] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0017] Figure 1 is a schematic cross-sectional view of an injection mold according to an embodiment of the present application;

[0018] Figure 2 is Figure 1 a schematic structural view after the ejector block and the positioning component are combined;

[0019] Figure 3 is Figure 1 a schematic structural view of the front mold in

[0020] Figure 4 is Figure 1 a schematic structural view after the rear mold and the ejector block are combined in

[0021] Reference numerals:

[0022] 10. Injection mold;

[0023] 11. Front mold; 111. First installation groove; 112. First wall surface; 113. Second clamping member;

[0024] 12. Rear mold; 121. Ejector block; 1211. Second installation groove; 1212. Second wall surface;

[0025] 1213. Third installation groove; 1214. First clamping member; 1215. Wear-resistant plate;

[0026] 122. Fourth installation groove; 123. Injection cavity;

[0027] 13. Positioning component; 131. Positioning block; 1311. Step surface; 132. Positioning screw;

[0028] 14. Elastic component; 141. Guide member; 142. Elastic member. Detailed implementation manners

[0029] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation to the present application.

[0030] Next, refer to Figures 1 - 4Describe an injection mold 10 according to an embodiment of the present application. The injection mold 10 includes a front mold 11, a rear mold 12, and a positioning component 13. A first installation groove 111 is formed on the front mold 11 and is recessed toward the inside. The rear mold 12 is arranged corresponding to the front mold 11. A spring block 121 is arranged on the side of the rear mold 12 facing the front mold 11. The spring block 121 can selectively adhere to the front mold 11 and is provided with a second installation groove 1211 recessed toward the inside. One end of the positioning component 13 is received in the second installation groove 1211 and is connected to the spring block 121. The other end of the positioning component 13 extends toward the front mold 11 and cooperates with the first installation groove 111. Among them, the front mold 11, the rear mold 12, and the spring block 121 define an injection cavity 123. A first wall surface 112 is formed on the side of the front mold 11 facing the injection cavity 123. A second wall surface 1212 is formed on the side of the spring block 121 facing the injection cavity 123. The first wall surface 112 and the second wall surface 1212 are coplanarly arranged.

[0031] Currently, most of the exterior plastic parts of vehicles are injection molded. In order to reduce costs, the number of plastic parts is usually reduced. However, the reduction in the number of plastic parts will lead to an increase in the complexity of the single-piece injection molded parts and the corresponding mold structure. The complex mold structure will cause the problem of clamping lines in the injection molded parts, making it difficult to meet the requirements.

[0032] As Figure 1 shown, specifically, the injection mold 10 may include a front mold 11 and a rear mold 12. The front mold 11 may be formed with a first installation groove 111, and the first installation groove 111 may be recessed toward the inside of the front mold 11. The rear mold 12 can be arranged corresponding to the front mold 11, and the rear mold 12 can selectively adhere to or separate from the front mold 11 to achieve injection molding. Among them, a spring block 121 may be arranged on the rear mold 12, and the spring block 121 may be located on the side of the rear mold 12 facing the front mold 11, that is, the spring block 121 may be located between the front mold 11 and the rear mold 12. The spring block 121 can play a role in further defining the specific shape of the injection molded part, and the spring block 121 can selectively adhere to the front mold 11. A second installation groove 1211 may be arranged on the spring block 121, and the second installation groove 1211 may be recessed toward the inside of the spring block 121.

[0033] In some embodiments, the first installation groove 111 and the second installation groove 1211 may be arranged corresponding to each other, and in a plane perpendicular to the direction of the rear mold 12 facing the front mold 11, the projections of the first installation groove 111 and the second installation groove 1211 coincide. It can be understood that the first installation groove 111 and the second installation groove 1211 are arranged opposite to each other in the direction of the rear mold 12 facing the front mold 11.

[0034] The injection mold 10 may further include a positioning component 13. One end of the positioning component 13 can be received in the second installation groove 1211, and the positioning component 13 can be connected to the ejector block 121. The other end of the positioning component 13 can extend toward the front mold 11 and cooperate with the first installation groove 111. Optionally, a detachable connection can be formed between the positioning component 13 and the first installation groove 111 by snap connection or plug connection.

[0035] Further, the front mold 11, the rear mold 12, and the ejector block 121 can define an injection cavity 123. A first wall surface 112 is formed on the side of the front mold 11 facing the injection cavity 123, and a second wall surface 1212 is formed on the side of the ejector block 121 facing the injection cavity 123. The first wall surface 112 and the second wall surface 1212 can be arranged coplanarly, so as to ensure that the stitch of the injection molded part is eliminated during injection molding and the product qualification rate is ensured. It should be noted that the coplanar arrangement of the first wall surface 112 and the second wall surface 1212 means that the first wall surface 112 and the second wall surface 1212 are in the same plane. During actual operation, before the front mold 11 and the rear mold 12 are closed, the positioning component 13 is first aligned and cooperated with the first installation groove 111, so as to ensure that the edge of the ejector block 121 is aligned with the edge of the front mold 11. During injection molding, the first wall surface 112 and the second wall surface 1212 are kept horizontal. Therefore, there is no stitch on the surface of the injection molded part, and no trimming is required, improving the product qualification rate.

[0036] In short, the injection mold 10 of the embodiment of the present application is provided with a positioning component 13. The first installation groove 111 and the second installation groove 1211 that cooperate with the positioning component 13 are respectively arranged on the front mold 11 and the ejector block 121. After the front mold 11 and the rear mold 12 are closed, the positioning component 13 can cooperate with the first installation groove 111 and the second installation groove 1211 respectively to make the first wall surface 112 of the front mold 11 and the second wall surface 1212 of the ejector block 121 coplanar, ensuring that there is no stitch on the surface of the injection molded part after injection molding. Compared with the prior art, no additional trimming is required, ensuring the product qualification rate, reducing the cost, and shortening the product delivery cycle.

[0037] Such as Figure 1 and Figure 2As shown, in some embodiments of the present application, the positioning component 13 may include a positioning block 131 and a positioning screw 132. A part of the positioning block 131 may be received in the first installation groove 111, and another part of the positioning block 131 may be received in the second installation groove 1211. It can be understood that the positioning block 131 may be connected to the first installation groove 111 and the second installation groove 1211 by a snap connection, and both ends of the positioning block 131 may respectively abut against the inner walls of the first installation groove 111 and the second installation groove 1211. A positioning hole extending axially is further formed on the positioning block 131. A stepped surface 1311 may be formed on the inner wall of the positioning hole. The positioning screw 132 may pass through the positioning hole, and one end of the positioning screw 132 can abut against the stepped surface 1311, so as to realize the axial limit of the positioning screw 132. The other end of the positioning screw 132 can protrude from the positioning block 131 and be connected to the elastic block 121. Optionally, the positioning screw 132 and the elastic block 121 are connected by a threaded connection. An external thread is formed on the outer peripheral wall of the positioning screw 132, and an internal thread matching the external thread is formed on the elastic block 121. The positioning block 131 and the elastic block 121 are connected by screwing the positioning screw 132 and the elastic block 121 together.

[0038] In some embodiments of the present application, the depth of the first installation groove 111 is D1, and it satisfies the relationship: 10mm ≤ D1 ≤ 15mm, that is, the depth of the first installation groove 111 can be any value between 10mm and 15mm. For example, the depth of the first installation groove 111 can be, but is not limited to, 10mm, 12mm, 14mm, 15mm, etc. The depth of the second installation groove 1211 is D2, and it satisfies the relationship: 10mm ≤ D2 ≤ 15mm, that is, the depth of the second installation groove 1211 can be any value between 10mm and 15mm. For example, the depth of the second installation groove 1211 can be, but is not limited to, 10mm, 11mm, 13mm, 15mm, etc. Such a setting can ensure that the positioning component 13 can better cooperate with the first installation groove 111 and the second installation groove 1211, avoiding problems such as inaccurate positioning and difficult positioning caused by the first installation groove 111 and the second installation groove 1211 being too shallow or too deep, and improving the reliability of the positioning component 13.

[0039] In some embodiments of the present application, the shortest distance between the inner wall of the second installation groove 1211 and the second wall surface 1212 is L, and it satisfies the relational expression: 8 mm ≤ L ≤ 12 mm, that is, the shortest distance between the inner wall of the second installation groove 1211 and the second wall surface 1212 can be any value between 8 mm and 12 mm. For example, the shortest distance between the inner wall of the second installation groove 1211 and the second wall surface 1212 can be, but is not limited to, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, etc. Such a setting can ensure that after the positioning component 13 cooperates with the first installation groove 111 and the second installation groove 1211, the first wall surface 112 and the second wall surface 1212 can be coplanar, and then there is no clamping line on the surface of the injection molded part after injection molding, ensuring the product qualification rate.

[0040] As Figure 1 shown, in some embodiments of the present application, a third installation groove 1213 may further be formed on the elastic block 121. The third installation groove 1213 may be recessed toward the inside of the elastic block 121. A fourth installation groove 122 may be formed on the rear mold 12. The fourth installation groove 122 may be correspondingly arranged with the third installation groove 1213. The injection mold 10 may further include an elastic component 14. A part of the elastic component 14 may be received in the third installation groove 1213 and abut against the inner wall of the third installation groove 1213. Another part of the elastic component 14 may be received in the fourth installation groove 122 and abut against the inner wall of the fourth installation groove 122. The elastic component 14 may eject the elastic block 121 when the front mold 11 and the rear mold 12 are separated, so as to take out the injection molded part.

[0041] Furthermore, the elastic component 14 may include a guiding member 141 and an elastic member 142. A part of the guiding member 141 may be received in the third installation groove 1213, and another part of the guiding member 141 may be received in the fourth installation groove 122. The elastic member 142 may be sleeved on the outer peripheral wall of the guiding member 141, and one end of the elastic member 142 can abut against the inner wall of the third installation groove 1213, and the other end of the elastic member 142 can abut against the inner wall of the fourth installation groove 122. It can be understood that the guiding member 141 can play a guiding role and a role in limiting the elastic member 142. When the front mold 11 and the rear mold 12 are separated, the elastic member 142 is restored under the influence of the elastic force. Therefore, the elastic member 142 can provide an elastic force to the elastic block 121, so that the elastic block 121 is detached from the rear mold 12. The guiding member 141 has a guiding role to ensure that the force generated by the deformation of the elastic member 142 can act on the elastic block 121. In some embodiments, the elastic member 142 may be configured as a spring.

[0042] As Figure 2 and Figure 4As shown, in some embodiments of the present application, a first engaging member 1214 may be further provided on one side of the elastic block 121 facing the front mold 11, and a second engaging member 113 may be provided on the front mold 11. The second engaging member 113 can be correspondingly arranged with the first engaging member 1214, and the second engaging member 113 can be engaged and cooperate with the first engaging member 1214. When the front mold 11 is separated from the rear mold 12, the second engaging member 113 can synchronously pull the first engaging member 1214 to make the elastic block 121 pop up, ensuring that the elastic block 121 can be separated from the rear mold 12 when the front mold 11 and the rear mold 12 are separated. Further, the first engaging member 1214 is configured as one of a hook and a tongue, and the second engaging member 113 is configured as the other of a hook and a tongue. In a specific embodiment, the first engaging member 1214 can be configured as a hook, and the second engaging member 113 can be configured as a tongue.

[0043] As Figure 1 As described above, in some embodiments of the present application, a wear-resistant plate 1215 is further provided on one side of the elastic block 121 facing the rear mold 12. The wear-resistant plate 1215 can increase the hardness and wear resistance of the elastic block 121, thereby improving the service life of the elastic block 121. Specifically, the wear-resistant plate 1215 can significantly reduce the friction generated between the elastic block 121 and the rear mold 12, thereby reducing wear. The material of the wear-resistant plate 1215 usually has a high hardness, can resist the compressive stress and friction generated during plastic filling and flowing, maintain the precision stability of the shape and size of the elastic block 121, and reduce the replacement frequency and cost.

[0044] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0045] In the description of the present application, the "first feature" and "second feature" may include one or more of such features.

[0046] In the description of the present application, the meaning of "a plurality" is two or more.

[0047] In the description of the present application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween.

[0048] In the description of the present application, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature.

[0049] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0050] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. An injection mold, characterized in that, Comprising: A front mold, on which a first installation groove is formed and recessed inward; A rear mold, which is arranged corresponding to the front mold. On the side of the rear mold facing the front mold, a spring block is provided. The spring block can selectively fit with the front mold and is provided with a second installation groove recessed inward; A positioning component, one end of which is received in the second installation groove and connected to the spring block, and the other end of which extends towards the front mold and cooperates with the first installation groove; wherein The front mold, the rear mold and the spring block define an injection cavity. On the side of the front mold facing the injection cavity, a first wall surface is formed. On the side of the spring block facing the injection cavity, a second wall surface is formed. The first wall surface and the second wall surface are coplanar.

2. The injection mold according to claim 1, characterized in that, The positioning component includes: A positioning block, a part of which is received in the first installation groove, and the other part of which is received in the second installation groove. A positioning hole extending axially is formed in the positioning block, and a stepped surface is formed on the inner wall of the positioning hole; A positioning screw, which is inserted through the positioning hole. One end of the positioning screw abuts against the stepped surface, and the other end of the positioning screw is connected to the spring block.

3. The injection mold according to claim 2, characterized in that, The depth of the first installation groove is D1 and satisfies: 10mm ≤ D1 ≤ 15mm.

4. The injection mold according to claim 3, characterized in that, The depth of the second installation groove is D2 and satisfies: 10mm ≤ D2 ≤ 15mm.

5. The injection mold according to claim 4, characterized in that, The shortest distance between the inner wall of the second installation groove and the second wall surface is L and satisfies: 8mm ≤ L ≤ 12mm.

6. The injection mold according to claim 1, characterized in that, On the spring block, a third installation groove is also formed and recessed inward. On the rear mold, a fourth installation groove corresponding to the third installation groove is formed. The injection mold further includes: An elastic component, a part of which is received in the third installation groove and abuts against the inner wall of the third installation groove, and the other part of which is received in the fourth installation groove and abuts against the inner wall of the fourth installation groove.

7. The injection mold according to claim 6, characterized in that, The elastic component includes; A guiding member, a part of which is received in the third installation groove, and the other part of which is received in the fourth installation groove; An elastic member, which is sleeved on the outer wall of the guiding member, and one end of the elastic member abuts against the inner wall of the third installation groove, and the other end of the elastic member abuts against the inner wall of the fourth installation groove.

8. The injection mold according to claim 1, characterized in that, On the side of the spring block facing the front mold, a first clamping member is further provided. On the front mold, a second clamping member corresponding to the first clamping member and in clamping cooperation is provided. The second clamping member is adapted to pull the first clamping member when the front mold and the rear mold are separated.

9. The injection mold according to claim 8, wherein The first clamping member is configured as one of a hook and a tongue, and the second clamping member is configured as the other of the hook and the tongue.

10. The injection mold according to claim 1, characterized in that, On the side of the spring block facing the rear mold, a wear-resistant plate is further provided.

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