Injection mold
By setting up structures such as grooves, protrusions, and baffles in the injection mold, and utilizing the instantaneous solidification of high-temperature injection molding material to form a sealant, the problem of inserts being damaged during mold closing is solved, thus improving the molding quality of inserts.
Patent Information
- Application Number
- CN202520350599.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-02-28
AI Technical Summary
Existing injection molds are prone to damaging inserts, especially metal inserts, during mold closing.
Structures such as grooves, protrusions, and stops are set on the male mold, and a third groove is set on the slider to create a gap between the slider and the insert. The high-temperature injection molding material instantly solidifies in the gap to form a sealant, which isolates the insert from contact with other parts of the mold.
It reduces the probability of inserts being damaged by pressure and improves the molding quality of inserts.
Smart Images
Figure CN223849829U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to an injection mold. BACKGROUND
[0002] An injection mold is a mold used to produce plastic products. For insert injection molding, an insert such as metal, glass, etc. needs to be inserted during the injection molding process to obtain a composite structure of plastic and other materials. The metal insert itself has a machining tolerance, while the injection mold is generally designed according to the theoretical value of the product, so there is a risk of crushing the metal insert when the mold is closed. SUMMARY
[0003] Therefore, the present application proposes an injection mold to solve the problem that the injection mold of the prior art is easy to crush the insert when the mold is closed.
[0004] An embodiment of the present application provides an injection mold, comprising a female mold, a male mold, and a sliding block. The female mold is provided with a female mold core, and the male mold is provided with a male mold core. The female mold core is configured to cooperate with the male mold core to close the mold. The male mold core is provided with a first groove for placing an insert to be injected. The male mold is further provided with a sliding groove in communication with the first groove. The end of the male mold core close to the sliding groove is provided with a connecting protrusion and a blocking strip. The sliding block is provided with a second groove at one end close to the male mold core, and the second groove is provided with a third groove. The sliding block is configured to move along the extension direction of the sliding groove in the sliding groove, so that the protrusion and the blocking strip abut against the side wall of the third groove. When the protrusion and the blocking strip abut against the side wall of the third groove, there is a gap between the sliding block and the insert.
[0005] In an embodiment, the protrusion and the blocking strip are located at the opening of the sliding groove. The blocking strip extends along the width direction of the sliding groove, and the protrusion is located on the surface of the blocking strip away from the male mold core and protrudes from the blocking strip along the extension direction of the sliding groove. The width direction of the sliding groove is perpendicular to the extension direction of the sliding groove and the depth direction of the sliding groove.
[0006] In an embodiment, the side surface of the protrusion is an arc surface. Along the width direction of the sliding groove, the side wall of the third groove comprises a first part and a second part connected to each other. The first part is a flat surface, and the blocking strip can abut against the first part. The second part is an arc surface, and the protrusion can abut against the second part.
[0007] In an embodiment, when the protrusion and the blocking strip abut against the side wall of the third groove, the second groove is in communication with the first groove, and the bottom wall of the first groove is flush with the bottom wall of the second groove.
[0008] In one embodiment, the first groove is provided with a positioning column, and the insert is sleeved on the outer circumferential surface of the positioning column.
[0009] In one embodiment, the surface of the female mold core facing the male mold core is provided with an opening. The opening is arranged corresponding to the positioning column, and the positioning column is configured to be capable of extending into the opening.
[0010] In one embodiment, the female mold is provided with a through hole for pouring the injection material into the first groove.
[0011] In one embodiment, the injection material is nylon, polypropylene or polyethylene.
[0012] In one embodiment, the insert is a metal insert or a glass insert, and the metal insert is made of aluminum.
[0013] In one embodiment, the number of the sliding blocks is two, and the number of the sliding grooves is two. The two sliding grooves are arranged corresponding to two adjacent edges of the male mold core respectively.
[0014] The injection mold of the present application is provided with a sliding groove, a convex part and a blocking strip on the male mold, and a third groove on the sliding block. The blocking of the convex part and the blocking strip causes a gap (part of the third groove) between the sliding block and the insert. When the molten injection material contacts the insert and the sliding block at low temperature, the injection material at high temperature will be solidified instantaneously, thereby forming a small section of the injection material after solidification in the gap, achieving the effect of sealing the glue. Because the sliding block is not in contact with the insert, and the injection material in the gap can also prevent the insert from contacting other parts of the injection mold, the probability of the insert being crushed can be reduced, and the problem of the insert being crushed can be improved. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 FIG. 1 is a structural schematic diagram of an injection mold according to an embodiment of the present application.
[0016] Figure 2 FIG. 2 is a schematic diagram of a part structure (male mold and sliding block) of the injection mold shown in FIG. 1. Figure 1 FIG. 3 is a schematic diagram of a part structure of the injection mold shown in FIG. 1 and an insert.
[0017] Figure 3 FIG. 4 is an exploded structural schematic diagram of the injection mold shown in FIG. 1. Figure 1
[0018] Figure 4 Figure 1
[0019] Figure 5 Figure 4 FIG. 5 is a schematic diagram of a part structure of the injection mold shown in FIG. 1 and an insert.
[0020] Explanation of main element symbols
[0021] 100: injection mold; 200: insert; 10: female mold; 20: male mold; 30: slider; 11: female mold core; 101: opening; 102: through hole; 21: male mold core; 22: protrusion; 23: blocking strip; 24: positioning column; 201: first groove; 202: sliding groove; 31: first part; 32: second part; 301: second groove; 302: third groove; 303: gap.
[0022] The following detailed description will further describe the embodiments of the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION
[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the embodiments of the application belong. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise noted, the specific conditions used in the examples are those that are conventional or are those that are indicated by the manufacturer to be the recommended conditions. Unless otherwise noted, the reagents or instruments used are conventional products available commercially.
[0024] It should be noted that all directional indications, such as up, down, left, right, front, back, etc., are merely used for the purpose of explanation and are not intended to be limiting of the application. The above-mentioned directions are relative directions and are not absolute directions.
[0025] It will be understood that when a layer is referred to as being "on" another layer, it can be directly on the other layer or intervening layers can also be present. In contrast, when a layer is referred to as being "directly on" another layer, there are no intervening layers present. When an element is referred to as being "fixed to", "attached to", "connected to" or "coupled to" another element, it can be directly on the other element or intervening elements can also be present.
[0026] It will be understood that when a component is referred to as being "parallel" or "perpendicular" to another component, there can be a tolerance of ±10% relative to the standard parallel / perpendicular between the two components.
[0027] Some embodiments of the present application will be described in detail with reference to the drawings, in which the same or similar components are denoted by the same reference numerals, and accordingly the descriptions are not repeated. The following embodiments and features thereof can be combined with each other unless otherwise specified.
[0028] Reference will now be made to Figures 1 to 3The application provides an injection mold 100, which comprises a female mold 10, a male mold 20 and a sliding block 30. The female mold 10 is provided with a female mold core 11 arranged on the surface of the female mold 10 facing the male mold 20. The male mold 20 is provided with a male mold core 21, and the female mold core 11 can be combined with the male mold core 21 to form a complete cavity. An embedded part 200 (see Figure 5 ) to be injected is arranged in the cavity, and molten injection material (not shown in the figure) can be injected into the cavity, so that the embedded part 200 and the injection material are integrally injected.
[0029] Please refer to Figure 3 and Figure 4 , the male mold core 21 is provided with a first groove 201, which is recessed from the surface of the male mold core 21 facing the female mold 10 in a direction away from the female mold 10. The shape of the first groove 201 can be regular or irregular, such as rectangle, diamond, circle, ellipse and the like, and the application does not make any limitation. The first groove 201 can be used for placing the embedded part to be injected. The male mold 20 is also provided with a sliding groove 202, which is recessed from the surface of the male mold 20 facing the female mold 10 in a direction away from the surface of the female mold 10. The sliding groove 202 is in communication with the first groove 201, and the end of the sliding groove 202 close to the male mold core 21 can be regarded as a bottom wall part of the first groove 201 recessed in a direction away from the female mold 10. The end of the male mold core 21 close to the sliding groove 202 is provided with a connecting convex part 22 and a blocking strip 23.
[0030] As shown in Figure 3 and Figure 4 , the sliding block 30 is provided with a second groove 301 at one end close to the male mold core 21. The second groove 301 is recessed from the end of the sliding block 30 close to the male mold core 21 in a direction away from the female mold 10, and the second groove 301 and the part of the sliding block 30 away from the male mold core 12 form a stepped shape. The second groove 301 is provided with a third groove 302, which is recessed from the part of the bottom wall of the second groove 301 close to the male mold core 21 in a direction away from the female mold 10. The sliding block 30 can move in the sliding groove 202 along the extension direction of the sliding groove 202, so that the convex part 22 and the blocking strip 23 abut against the side wall of the third groove 302, and then the sliding block 30 is embedded in the sliding groove 202 and cannot continue to move forward in the sliding groove 202 (i.e. in the direction close to the male mold core 21 or the embedded part 200). The abutment means that the two components contact each other and there is a certain force between them, that is, the convex part 22 contacts the side wall of the third groove 302 and there is a certain force between them, and the blocking strip 23 contacts the side wall of the third groove 302 and there is a certain force between them. As shown in Figure 5As shown, when the protrusion 22 and the blocking strip 23 abut against the side wall of the third groove 302, there is still a gap 303 (which is part of the third groove 302) between the slider 30 and the insert 200, and the slider 30 does not directly contact the insert 200.
[0031] When injection molding is needed, the insert 200 to be injection molded is placed in the male mold core 21, the slider 30 is pushed into the sliding groove 202 until the protrusion 22 and the blocking strip 23 abut against the side wall of the third groove 302, then the female mold 10 and the male mold 20 are closed to form a complete cavity, and finally the molten injection material is injected into the cavity. As shown, Figure 5 As shown, because there is a small gap 303 between the slider 30 and the insert 200, when the molten injection material contacts the low-temperature insert 200 and the slider 30, the high-temperature injection material will instantly and quickly solidify, thereby forming a small section of solidified injection material with a controllable length in the gap 303, achieving the effect of sealing the glue. Because the slider 30 does not contact the insert 200, and the injection material in the gap 303 can also isolate the insert 200 from contacting other parts of the injection mold 100, the probability of the insert 200 being crushed can be reduced, and the problem of the insert 200 being crushed can be improved.
[0032] In some embodiments, as shown, Figure 3 The protrusion 22 and the blocking strip 23 are located at the opening of the sliding groove 202. That is, the protrusion 22 and the blocking strip 23 are located substantially above the sliding groove 202, and the orthographic projection of the protrusion 22 and the blocking strip 23 is in the sliding groove 202. The blocking strip 23 is substantially long strip-shaped, and the blocking strip 23 extends along the width direction of the sliding groove 202. The protrusion 22 is located on the surface of the blocking strip 23 away from the male mold core 21, and protrudes from the blocking strip 23 along the extension direction of the sliding groove 202. Among them, the width direction of the sliding groove 202 is the direction perpendicular to both the extension direction of the sliding groove 202 (that is, the moving direction of the slider 30) and the depth direction of the sliding groove 202. Figure 3 Further, the side surface of the protrusion 22 is an arc surface. Along the width direction of the sliding groove 202, the side wall of the third groove 302 includes a connected first part 31 and a second part 32. The first part 31 is a flat surface, so that the first part 31 can abut against the blocking strip 23. The second part 32 is an arc surface, and the arc surface of the second part 32 is matched with the arc surface of the protrusion 22, so that the protrusion 22 can abut against the second part 32.
[0033] In some embodiments, as shown,
[0034] The protrusion 22 and the blocking strip 23 are located at the opening of the sliding groove 202. That is, the protrusion 22 and the blocking strip 23 are located substantially above the sliding groove 202, and the orthographic projection of the protrusion 22 and the blocking strip 23 is in the sliding groove 202. The blocking strip 23 is substantially long strip-shaped, and the blocking strip 23 extends along the width direction of the sliding groove 202. The protrusion 22 is located on the surface of the blocking strip 23 away from the male mold core 21, and protrudes from the blocking strip 23 along the extension direction of the sliding groove 202. Among them, the width direction of the sliding groove 202 is the direction perpendicular to both the extension direction of the sliding groove 202 (that is, the moving direction of the slider 30) and the depth direction of the sliding groove 202. Figure 4As shown, when the protrusion 22 and the blocking strip 23 abut against the side wall of the third groove 302, the second groove 301 communicates with the first groove 201, and the bottom wall of the second groove 301 is flush with the bottom wall of the first groove 201 (i.e., both are located at the same horizontal plane). In this way, it is helpful to obtain a smooth injection molding part during injection molding.
[0035] As shown in some embodiments, Figures 3 to 5 As shown, the number of the sliding grooves 202 is equal to the number of the sliding blocks 30. In the present embodiment, the number of the sliding grooves 202 and the number of the sliding blocks 30 are both two; in other embodiments, the number of the sliding grooves 202 and the number of the sliding blocks 30 can be one or more than two, which is not limited by the present application. In the present embodiment, the two sliding grooves 202 are arranged opposite to the two adjacent edges of the male die core 21. Similarly, the end of the male die core 21 close to the other sliding groove 202 is also provided with a connected protrusion 22 and a blocking strip 23 to prevent the sliding block 30 in the sliding groove 202 from continuing to move towards the male die core 21 or the insert 200.
[0036] As shown in some embodiments, Figure 3 and Figure 4 As shown, the first groove 201 is provided with a positioning column 24. As shown, Figure 2 the surface of the female die core 11 facing the male die core 21 is provided with an opening 101, and the opening 101 is arranged corresponding to the positioning column 24. When the female die 10 and the male die 20 are closed, the positioning column 24 can extend into the opening 101, and one opening 101 corresponds to one positioning column 24. The number of the opening 101 can be one or more, and the number of the positioning column 24 can be one or more, which is equal to the number of the opening 101. In the present embodiment, the number of the opening 101 and the number of the positioning column 24 are both two, and in other embodiments, the number of the opening 101 and the number of the positioning column 24 can be adjusted according to actual conditions.
[0037] As shown in some embodiments, Figure 5 As shown, the insert 200 can be sleeved on the outer circumferential surface of the positioning column 24, so that the insert 200 can be fixed.
[0038] As shown in some embodiments, Figures 1 to 3 As shown, the female die 10 is provided with a through hole 102. The through hole 102 can penetrate the female die 10 along the thickness direction of the female die 10, and the through hole 102 is located in the region of the female die core 11. The through hole 102 is used for pouring injection molding material into the first groove 201, and the injection molding material can be but is not limited to nylon (PA), polypropylene (PP) or polyethylene (PE) and the like.
[0039] In some embodiments, the insert 200 can be but is not limited to a metal insert or a glass insert. The material of the metal insert can be but is not limited to aluminum.
[0040] The injection mold 100 provided by the embodiments of the present application is provided with the sliding groove 202, the convex part 22 and the blocking strip 23 on the male mold 20, and is provided with the third groove 302 on the sliding block 30, and the convex part 22 and the blocking strip 23 block the gap 303 (part of the third groove 302) between the sliding block 30 and the insert 200. When the molten injection material contacts the insert 200 and the sliding block 30 at low temperature, the injection material at high temperature will be solidified instantaneously, so that a small amount of solidified injection material is formed in the gap 303, and the sealing effect is achieved. Because the sliding block 30 is not in contact with the insert 200, and the injection material in the gap 303 can also isolate the insert 200 from other parts of the injection mold 100, the probability of the insert 200 being crushed can be reduced, and the problem of the insert 200 being crushed can be improved.
[0041] The above description is some specific embodiments of the present application, but in the actual application process, it cannot be limited to these embodiments only. Other modifications and changes made by the person skilled in the art according to the technical concept of the present application should belong to the protection scope of the present application.
Claims
1. An injection mold characterized in that, The utility model relates to a mold for injection molding, comprising: a female mold provided with a female mold core; a male mold provided with a male mold core, the female mold core being configured to mate with the male mold core to form a mold; the male mold core is provided with a first recess for placing an insert to be injection molded; the male mold is further provided with a sliding groove in communication with the first recess, and the end of the male mold core close to the sliding groove is provided with a connecting protrusion and a blocking strip; a sliding block provided with a second recess at one end close to the male mold core, and the second recess is provided with a third recess; the sliding block is configured to move along the extension direction of the sliding groove in the sliding groove, so that the protrusion and the blocking strip abut against the sidewall of the third recess; when the protrusion and the blocking strip abut against the sidewall of the third recess, there is a gap between the sliding block and the insert.
2. The injection mold of claim 1, wherein, The protrusion and the blocking strip are located at the opening of the sliding groove, the blocking strip extends along the width direction of the sliding groove, and the protrusion is located on the surface of the blocking strip away from the male mold core and protrudes from the blocking strip along the extension direction of the sliding groove; wherein the width direction of the sliding groove is perpendicular to the extension direction of the sliding groove and the depth direction of the sliding groove.
3. The injection mold of claim 2, wherein The side surface of the protrusion is an arc surface; along the width direction of the sliding groove, the sidewall of the third recess includes a first part and a second part connected; the first part is a flat surface, and the blocking strip can abut against the first part; the second part is an arc surface, and the protrusion can abut against the second part.
4. The injection mold of claim 1, wherein, When the protrusion and the blocking strip abut against the sidewall of the third recess, the second recess is in communication with the first recess, and the bottom wall of the first recess is flush with the bottom wall of the second recess.
5. The injection mold of claim 1, wherein, The first recess is provided with a positioning column, and the insert is sleeved on the outer circumferential surface of the positioning column.
6. The injection mold of claim 5, wherein, The surface of the female mold core facing the male mold core is provided with an opening, and the opening corresponds to the positioning column; the positioning column is configured to extend into the opening.
7. The injection mold of claim 1, wherein The female mold is provided with a through hole for pouring injection material into the first recess.
8. The injection mold of claim 7, wherein, The injection material is nylon, polypropylene or polyethylene.
9. The injection mold of claim 1, wherein, The insert is a metal insert or a glass insert, and the metal insert is made of aluminum.
10. The injection mold of claim 1, wherein, The number of sliding blocks is two, and the number of sliding grooves is two; the two sliding grooves are respectively arranged on two adjacent edges of the male mold core.