Mold core and forming mold for mobile phone shell production

Abstract

The utility model relates to the technical field of mobile phone shell production, and discloses a mold core and a forming mold for mobile phone shell production, and the mold core for mobile phone shell production comprises an upper mold core, a lower mold core and a hole site forming mechanism, the lower mold core is arranged below the upper mold core, and an insert is arranged in the lower mold core; the insert is fixedly connected with the lower mold core; the hole position forming mechanism comprises a first hole position block, a second hole position block and a third hole position block; the first hole position block, the second hole position block and the third hole position block are circumferentially distributed around the insert; the first hole position block is provided with a first protruding block used for preventing the mobile phone shell from being taken out. The third hole position block is provided with a second protruding block used for preventing the mobile phone shell from being taken out.

Description

Technical Field

[0001] The utility model relates to the technical field of mobile phone shell production, in particular to a mold core and a forming mold for producing mobile phone shells. Background Art

[0002] With the development of communication, mobile phones have become an indispensable item in people's lives. Since mobile phones contain a large number of precision electronic parts, they usually need to be protected by mobile phone cases, and plastic mobile phone cases with light weight and high hardness have become the choice of most manufacturers.

[0003] Plastic mobile phone cases are usually produced by injection molding. For example, the Chinese patent document with publication number CN214188225U, the patent name of which is a combined mobile phone case injection mold, mentions "including a base, the top of the base is fixedly connected to a bottom mold, the inner cavity of the bottom mold is provided with an injection molding groove, the four corners of the top of the base are fixedly connected to a bracket, the top of the bottom mold is provided with a die, the top of the die is fixedly connected to a top cover, the four corners of the bottom of the top cover are fixedly connected to a plug rod, the top of the top cover is provided with an injection molding port, and the injection molding A camera hole block is arranged at the upper part of the inner cavity of the groove, an earphone interface hole block is fixedly connected to the top of the inner wall of the injection molding groove, a volume adjustment key hole block is fixedly connected to the right side of the inner wall of the injection molding groove, and a machine key hole block is arranged below the volume adjustment key hole block. This structure adopts a multi-hole injection method to reduce the injection time and improve the work efficiency. However, the product quality of the existing mold is poor. When taking the material, due to the certain adsorption force between the mobile phone shell and the multiple groups of hole blocks, the thinner side wall of the mobile phone shell is easy to break, which increases the defective rate of the mobile phone shell and reduces the production quality of the mobile phone shell.

[0004] Therefore, there is an urgent need for mold cores and forming molds for producing mobile phone shells to solve the above problems. Utility Model Content

[0005] Based on the above, the purpose of the utility model is to provide a mold core and a molding mold for producing a mobile phone shell, so as to solve the problem that the product quality of the existing mold is poor and the thin side wall of the mobile phone shell is easy to break when taking the material.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A mold core and a forming mold for producing a mobile phone shell, the mold core for producing a mobile phone shell comprises an upper mold core, a lower mold core and a hole forming mechanism; the lower mold core is arranged below the upper mold core, and an insert is arranged inside the lower mold core; the insert is fixedly connected to the lower mold core; the hole forming mechanism comprises a first hole block, a second hole block and a third hole block; the first hole block, the second hole block and the third hole block are circumferentially distributed around the insert;

[0008] The first hole block is provided with a first protrusion block for preventing the mobile phone case from being removed; the third hole block is provided with a second protrusion block for preventing the mobile phone case from being removed.

[0009] As a preferred solution for the mold core and the forming mold for producing mobile phone shells, the first protrusion block and the first hole block are integrally formed; the second protrusion block and the second hole block are integrally formed; the first protrusion block and the second protrusion block have the same structure.

[0010] As a preferred solution for the mold core and the forming mold for producing mobile phone shells, the first raised block includes a top surface, a first side surface and a second side surface; the first side surface and the second side surface are symmetrically distributed at the top of the first raised block; the top surface is arranged above the first side surface and the second side surface, and is connected to the first side surface and the second side surface; the first side surface and the second side surface are respectively inclined relative to the top surface.

[0011] As a preferred solution for the mold core and the forming mold for producing mobile phone shells, the lower mold core is provided with a mounting groove for mounting the insert; the inner circumference of the mounting groove is larger than the outer circumference of the insert.

[0012] As a preferred solution for the mold core and the molding die for producing the mobile phone shell, a molding cavity for molding the mobile phone shell is formed between the mounting groove and the insert.

[0013] As a preferred solution for the mold core and forming mold for producing mobile phone shells, one end of the first hole block is provided with a first protrusion extending outward, and the first protrusion block is arranged on the first protrusion; the first hole block is slidably connected to the lower mold core.

[0014] As a preferred solution for the mold core and the forming mold for producing mobile phone shells, one end of the second hole block is provided with a second protrusion extending outward; the second hole block is slidably connected to the lower mold core.

[0015] As a preferred solution for the mold core and forming mold for producing mobile phone shells, one end of the third hole block is provided with a second protrusion extending outward, and the second protrusion block is arranged on the second protrusion; the third hole block is slidably connected to the lower mold core.

[0016] The beneficial effects of the utility model are:

[0017] By providing the first protruding block and the second protruding block, the volume adjustment key hole and the power off key hole corresponding to the injection-molded mobile phone shell are respectively formed with groove holes corresponding to the first protruding block and the second protruding block on one side close to the other side, so that when the mobile phone shell is taken out, the internal tensile stress is concentrated in the groove holes, and the tensile stress is avoided from being concentrated on the thinner side walls of the volume adjustment key hole or the power off key hole, so that the side walls of the volume adjustment key hole and the power off key hole are prevented from being broken, thereby improving the molding quality of the mobile phone shell.

[0018] The molding die comprises a top plate, a flow channel plate, an upper template, a lower template, a bottom plate, and a mold core for producing the mobile phone shell; the flow channel plate is arranged below the top plate; the upper template is arranged below the flow channel plate; the lower template is arranged below the upper template; the bottom plate is arranged below the lower template; the mold core for producing the mobile phone shell is arranged between the upper template and the lower template.

[0019] The beneficial effects of the utility model are as follows: since the molding die adopts the mold core for producing the mobile phone shell, the first protrusion block and the second protrusion block are provided, and the volume adjustment key hole and the power-off key hole corresponding to the injection-molded mobile phone shell are respectively formed with groove holes corresponding to the first protrusion block and the second protrusion block on one side close to the other side, so that when the mobile phone shell is taken out, the internal tensile stress is concentrated in the groove holes, and the tensile stress is avoided from being concentrated on the thinner side walls of the volume adjustment key hole or the power-off key hole, so that the side walls of the volume adjustment key hole and the power-off key hole are prevented from being broken, thereby improving the molding quality of the mobile phone shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the overall structure of the mold core used for producing a mobile phone shell provided by the utility model;

[0021] Figure 2 A schematic diagram of the exploded structure of a mold core for producing a mobile phone shell provided by the utility model;

[0022] Figure 3 This is a schematic diagram of the overall structure of the first hole block provided by the utility model;

[0023] Figure 4 for Figure 3 A is an enlarged schematic diagram;

[0024] Figure 5 This is a schematic diagram of the overall structure of the second hole block provided by the utility model;

[0025] Figure 6 This is a schematic diagram of the overall structure of the third hole block provided by the utility model;

[0026] Figure 7 for Figure 6 A magnified schematic diagram of B;

[0027] Figure 8 This is a schematic diagram of the overall structure of the molding die provided by the utility model.

[0028] Among them, the reference numerals in the figure are:

[0029] 10. Upper mold core; 20. Lower mold core; 21. Insert; 22. Mounting groove; 31. First hole block; 311. First protrusion; 32. Second hole block; 321. Second protrusion; 33. Third hole block; 331. Third protrusion; 41. First protrusion block; 411. Top surface; 412. First side surface; 413. Second side surface; 42. Second protrusion block; 51. Top plate; 52. Runner plate; 53. Upper template; 54. Lower template; 55. Bottom plate. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0031] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0033] In the description of this embodiment, terms such as "up", "down", "left", and "right" and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present utility model.

[0034] In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more than two. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0035] In one embodiment of the present invention, Figure 1-7 As shown, a mold core for producing a mobile phone shell is provided, comprising an upper mold core 10, a lower mold core 20 and a hole forming mechanism. The lower mold core 20 is arranged below the upper mold core 10, and an insert 21 is arranged in the lower mold core 20. The insert 21 is fixedly connected to the lower mold core 20. The hole forming mechanism comprises a first hole block 31, a second hole block 32 and a third hole block 33. The first hole block 31, the second hole block 32 and the third hole block 33 are circumferentially distributed around the insert 21.

[0036] The first hole block 31 is provided with a first protruding block 41 for preventing the mobile phone shell from being removed. The third hole block 33 is provided with a second protruding block 42 for preventing the mobile phone shell from being removed.

[0037] In this embodiment, three groups of injection ports are arranged circumferentially on the top surface 411 of the upper mold core 10. The top surface 411 of the upper mold core 10 is also provided with flow channels respectively connected to the three groups of upper mold cores 10. Hooks corresponding to the injection ports are provided at the ends of the flow channels. When the mold is opened, the sprue material is taken out of the flow channel by the hooks, thereby realizing automatic material removal of the sprue material.

[0038] By providing the first protruding block 41 and the second protruding block 42, the volume adjustment key hole and the power off key hole corresponding to the injection-molded mobile phone case are respectively formed with groove holes corresponding to the first protruding block 41 and the second protruding block 42 on one side close to the other side, so that when the mobile phone case is taken out, the tensile stress inside the mobile phone case is concentrated in the groove holes, avoiding the tensile stress from being concentrated on the thinner side walls of the volume adjustment key hole or the power off key hole, preventing the side walls of the volume adjustment key hole and the power off key hole from being broken, and improving the molding quality of the mobile phone case.

[0039] Preferably, the first protruding block 41 is integrally formed with the first hole block 31. The second protruding block 42 is integrally formed with the second hole block 32. The first protruding block 41 and the second protruding block 42 have the same structure. By integrally forming the first protruding block 41 with the first hole block 31 and the second protruding block 42 with the second hole block 32, production and processing are facilitated, processing steps are simplified, and production efficiency is improved.

[0040] Specifically, the first protruding block 41 and the second protruding block 42 have the same structure, that is, the working principles of the two are the same, so only the first protruding block 41 is described in detail. The first protruding block 41 includes a top surface 411, a first side surface 412 and a second side surface 413. The first side surface 412 and the second side surface 413 are symmetrically distributed at the top of the first protruding block 41. The top surface 411 is arranged above the first side surface 412 and the second side surface 413, and is connected to the first side surface 412 and the second side surface 413. The first side surface 412 and the second side surface 413 are respectively inclined to the top surface 411. The first side surface 412, the second side surface 413 and the top surface 411 form a boss with a trapezoidal structure, and the size of the top surface 411 gradually decreases along the axial direction, presenting a conical structure, which is convenient for demoulding the first hole block 31 or the second hole block 32 and improving the demoulding efficiency.

[0041] Preferably, the lower mold core 20 is provided with a mounting groove 22 for mounting the insert 21. The inner circumference of the mounting groove 22 is larger than the outer circumference of the insert 21. A molding cavity for molding the mobile phone case is formed between the mounting groove 22 and the insert 21. The injection molding fluid flows into the molding cavity, and the side holes of the mobile phone case are injection molded under the action of the first hole block 31, the second hole block 32, and the third hole block 33, and when taking out the material, the side holes of the mobile phone case are effectively prevented from being buckled and unable to be taken out.

[0042] In this embodiment, a lifting component for lifting the material is connected to the bottom end of the insert 21, and the formed mobile phone shell is lifted up by the lifting component to facilitate the staff to take the material.

[0043] Preferably, a first protrusion 311 extending outward is provided at one end of the first hole block 31, and a first protrusion block 41 is provided on the first protrusion 311. The first hole block 31 is slidably connected to the lower mold core 20. In this embodiment, two groups of bosses of different sizes are distributed on the left and right sides of the first protrusion 311, and the injection molding of the mute key hole and the volume adjustment key hole on the mobile phone case is realized by the two groups of bosses. An end of the first hole block 31 away from the first protrusion 311 is provided with a first sliding groove arranged obliquely, and the first sliding groove is connected to an external inclined top, and the external inclined top is a technology well known to those skilled in the art.

[0044] During injection molding, under the action of the first protruding block 41 on the first hole block 31, a first groove hole corresponding to the first protruding block 41 is formed on the side edge of the volume adjustment key hole of the mobile phone case close to the back side, so that when the mobile phone case is taken out, the tensile stress inside the mobile phone case is concentrated in the first groove hole, thereby avoiding the breakage of the thin side wall of the volume adjustment key hole and improving the production quality of the mobile phone case.

[0045] Preferably, a second protrusion 321 extending outward is provided at one end of the second hole block 32. The second hole block is slidably connected to the lower mold core 20. In this embodiment, three groups of bosses of different sizes are distributed on the left and right of the first protrusion 311, and the injection molding of the sound hole and the charging hole on the mobile phone case is realized by the three groups of bosses. The second hole block 32 is provided with a second sliding groove arranged obliquely at one end away from the second protrusion 321, and the second sliding groove is connected to the external inclined top, and the external inclined top is a technology well known to those skilled in the art.

[0046] Preferably, a second protrusion 321 extending outward is provided at one end of the third hole block 33, and a second protrusion block 42 is provided on the second protrusion 321. The third hole block 33 is slidably connected to the lower mold core 20. In this embodiment, a group of bosses are distributed on the left and right sides of the third protrusion 331, and the injection molding of the shutdown key hole on the mobile phone case is realized by the group of bosses. A third sliding groove is provided at an inclined position at one end of the third hole block 33 away from the third protrusion 331, and the third sliding groove is connected to an external inclined top, and the external inclined top is a technology well known to those skilled in the art.

[0047] During injection molding, under the action of the second protruding block 42 on the third hole block 33, a second groove hole corresponding to the second protruding block 42 is formed on the side edge of the power-off key hole of the mobile phone case close to the back, so that when the mobile phone case is taken out, the pulling stress inside the mobile phone case is concentrated in the second groove hole, thereby avoiding the breakage of the thin side wall of the power-off key hole and improving the production quality of the mobile phone case.

[0048] In one embodiment of the present invention, Figure 1-8 As shown, a molding mold is provided, including a top plate 51, a flow channel plate 52, an upper template 53, a lower template 54, a bottom plate 55, and a mold core for producing a mobile phone shell. The flow channel plate 52 is arranged below the top plate 51. The upper template 53 is arranged below the flow channel plate 52. The lower template 54 is arranged below the upper template 53. The bottom plate 55 is arranged below the lower template 54. The mold core for producing a mobile phone shell is arranged between the upper template 53 and the lower template 54.

[0049] Since the molding die adopts the mold core for producing the above-mentioned mobile phone shell, the first protrusion block 41 and the second protrusion block 42 are set, and the volume adjustment key hole and the power-off key hole corresponding to the injection-molded mobile phone shell are respectively formed with groove holes corresponding to the first protrusion block 41 and the second protrusion block 42 on the side close to the other side, so that when the mobile phone shell is taken out, the internal tensile stress is concentrated in the groove holes, avoiding the tensile stress from being concentrated on the thinner side walls of the volume adjustment key hole or the power-off key hole, preventing the side walls of the volume adjustment key hole and the power-off key hole from breaking, and improving the molding quality of the mobile phone shell.

[0050] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiments according to the technology of the utility model, which does not depart from the content of the technical solution of the utility model, belongs to the scope of the technical solution of the utility model.

Claims

1. A mold core for producing a mobile phone shell, characterized in that: include: Upper mold core; A lower die core, the lower die core is arranged below the upper die core, and an insert is arranged in the lower die core; The insert is fixedly connected to the lower mold core; A hole forming mechanism, the hole forming mechanism comprising a first hole block, a second hole block and a third hole block; the first hole block, the second hole block and the third hole block are circumferentially distributed around the insert; Wherein, the first hole block is provided with a first protruding block for preventing the mobile phone case from being removed; and the third hole block is provided with a second protruding block for preventing the mobile phone case from being removed.

2. The mold core for producing a mobile phone shell according to claim 1, characterized in that: The first protruding block is integrally formed with the first hole block; the second protruding block is integrally formed with the second hole block; the first protruding block and the second protruding block have the same structure.

3. The mold core for producing a mobile phone shell according to claim 2, characterized in that: The first protruding block includes a top surface, a first side surface and a second side surface; the first side surface and the second side surface are symmetrically distributed at the top of the first protruding block; the top surface is arranged above the first side surface and the second side surface, and is connected to the first side surface and the second side surface; the first side surface and the second side surface are respectively inclined to the top surface.

4. The mold core for producing a mobile phone shell according to claim 1, characterized in that: The lower die core is provided with a mounting groove for mounting the insert; the inner circumference of the mounting groove is larger than the outer circumference of the insert.

5. The mold core for producing a mobile phone shell according to claim 4, characterized in that: A molding cavity for molding a mobile phone shell is formed between the mounting groove and the insert.

6. The mold core for producing a mobile phone shell according to claim 1, characterized in that: One end of the first hole block is provided with a first protruding portion extending outward, and the first protruding block is arranged on the first protruding portion; the first hole block is slidably connected to the lower die core.

7. The mold core for producing a mobile phone shell according to claim 1, characterized in that: One end of the second hole block is provided with a second protrusion extending outward; the second hole block is slidably connected to the lower mold core.

8. The mold core for producing a mobile phone shell according to claim 1, characterized in that: One end of the third hole block is provided with a second protruding portion extending outward, and the second protruding block is arranged on the second protruding portion; the third hole block is slidably connected to the lower die core.

9. A molding die, characterized in that: It includes a top plate, a flow channel plate, an upper template, a lower template, a bottom plate, and a mold core for producing a mobile phone shell according to any one of claims 1 to 8; the flow channel plate is arranged below the top plate; the upper template is arranged below the flow channel plate; the lower template is arranged below the upper template; the bottom plate is arranged below the lower template; the mold core for producing a mobile phone shell is arranged between the upper template and the lower template.

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