Injection mold for lens cover assembly with magnet piece

Abstract

The utility model discloses a lens cover assembly injection mold with a magnet piece, and belongs to the technical field of lens cover injection molding production. Comprising a workbench, a lower mold body is fixedly arranged on the workbench, and an injection molding hole is formed in the lower mold body; a support is fixedly arranged on the workbench, and an upper die body corresponding to the lower die body is arranged in the support in an up-down sliding mode. The magnet piece is arranged at the bottom of the upper die body, a groove corresponding to the magnet piece is formed in the upper die body, the groove does not penetrate through the upper die body, and a positioning magnet capable of penetrating through the upper die body to attract the magnet piece is located in the groove; the upper die lifting assembly capable of controlling the upper die body to slide up and down is connected to the support, and the magnet lifting assembly capable of controlling the positioning magnet to slide up and down is connected to the upper die lifting assembly. The magnet part is positioned and fixed through the adsorption force of the positioning magnet, and the accuracy and stability of positioning of the magnet part can be guaranteed; meanwhile, the magnet lifting assembly is arranged so that the positioning magnet can be conveniently moved out, and demolding is facilitated.

Description

Technical Field

[0001] This utility model provides an injection mold for a lens cover assembly with a magnet, belonging to the field of lens cover injection molding production technology. Background Technology

[0002] With the rapid development of optical technology, lenses are increasingly widely used in various electronic devices, photographic equipment, and industrial inspection. As a crucial component for protecting lenses, the performance and quality of lens caps directly affect the lens's lifespan and imaging results. Traditional lens caps typically use simple snap-fit ​​or threaded connections to attach to lenses, while others use magnetic attachments.

[0003] The application of magnetic components enables a quick and reliable magnetic connection between the lens cap and the lens, greatly improving ease of use. Users simply bring the lens cap close to the lens, and the magnetic force automatically causes it to adhere, eliminating the need for cumbersome operations. Similarly, removing the lens cap is as simple and efficient as a gentle pull. However, in the injection molding production of lens caps with magnetic components, accurate positioning of the magnetic components within the mold cavity is challenging. During injection molding, the flow of molten plastic impacts the magnetic components, easily causing displacement or tilting. Inaccurate positioning of the magnetic components affects the magnetic performance of the lens cap assembly, preventing a proper magnetic connection with the lens and reducing product yield. To address these issues, a lens cap assembly injection mold with magnetic components is needed. Utility Model Content

[0004] The technical problem this invention aims to solve is that the magnetic component is difficult to position accurately within the mold cavity, thus affecting the magnetic attraction performance of the lens cover assembly.

[0005] To solve the above problems, the proposed technical solution is as follows: an injection mold for a lens cover assembly with a magnet, comprising a worktable, a lower mold body fixedly mounted on the worktable, and an injection hole formed on the lower mold body; a bracket fixedly mounted on the worktable, and an upper mold body corresponding to the lower mold body slidingly mounted within the bracket; further comprising:

[0006] A magnetic component and a positioning magnet; the magnetic component is disposed at the bottom of the upper mold body, and a groove corresponding to the magnetic component is opened in the upper mold body. The groove does not penetrate the upper mold body, but can pass through the upper mold body to place the positioning magnet that attracts the magnetic component in the groove.

[0007] The upper mold lifting assembly and the magnet lifting assembly; the upper mold lifting assembly, which can control the upper mold body to slide up and down, is connected to the bracket, and the magnet lifting assembly, which can control the positioning magnet to slide up and down, is connected to the upper mold lifting assembly.

[0008] As an improvement, the number of magnet components, grooves, and positioning magnets are the same and their positions correspond.

[0009] As an improvement, the upper mold lifting assembly includes an electric telescopic rod, a support plate, and a connecting rod; the electric telescopic rod is mounted on a bracket, and the support plate is fixedly connected to the working end of the electric telescopic rod; the connecting rod is fixedly connected to the bottom of the support plate, and the connecting rod is fixedly connected to the upper mold body.

[0010] As an improvement, the magnet lifting assembly is connected to the support plate; a connecting plate is provided above the upper mold body and is fixedly connected to all the magnet components, and the connecting plate is fixedly connected to the magnet lifting assembly.

[0011] As an improvement, the magnet lifting assembly includes a motor, a lead screw, a lifting plate, and a connecting block; the motor is mounted on a support plate, and the lead screw is fixedly connected to the output end of the motor; the lifting plate is threadedly connected to the lead screw, and a connecting block is fixedly connected below the lifting plate, and the connecting block is fixedly connected to the connecting plate.

[0012] As an improvement, a limit rod is fixedly connected to the bottom of the support plate, and the lifting plate is slidably sleeved on the limit rod.

[0013] The beneficial effects of this utility model are:

[0014] A magnetic component is disposed at the bottom of the upper mold body, and a groove corresponding to the magnetic component is formed in the upper mold body, which can hold the positioning magnet attracted by the magnetic component within the groove. This application places the magnetic component at the bottom of the upper mold body and uses the positioning magnet capable of attracting the magnetic component to position and fix it, thereby ensuring the accuracy and stability of the magnetic component's positioning. A magnetic lifting assembly capable of controlling the up-and-down sliding of the positioning magnet is connected to the upper mold lifting assembly. By setting up the magnetic lifting assembly, the positioning magnet can be easily removed, thereby releasing the mutual attraction between the positioning magnet and the magnetic component after the magnetic component has stabilized, preventing the positioning magnet from affecting the stability of the magnetic component during demolding. Attached Figure Description

[0015] Figure 1 This is a perspective view of an injection mold for a lens cover assembly with a magnet component according to the present invention.

[0016] Figure 2 This is a perspective view of another angle of the injection mold for a lens cover assembly with a magnet component according to this utility model.

[0017] Figure 3 This is a cross-sectional view of the upper mold body of an injection mold for a lens cover assembly with a magnet component according to this utility model.

[0018] Figure 4 This is a partially exploded view of the injection mold for a lens cover assembly with a magnet component according to this utility model.

[0019] 1. Workbench; 2. Support frame; 3. Electric telescopic rod; 4. Support plate; 5. Connecting rod; 6. Upper mold body; 7. Injection hole; 8. Lower mold body; 9. Magnetic component; 10. Motor; 11. Lead screw; 12. Connecting block; 13. Positioning magnet; 14. Groove; 15. Connecting plate; 16. Lifting plate; 17. Limiting rod. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] according to Figure 1-4 As shown: This utility model provides an injection mold for a lens cover assembly with a magnet: it includes a worktable 1, on which a lower mold body 8 is fixedly mounted, and the lower mold body 8 has an injection hole 7; a bracket 2 is fixedly mounted on the worktable 1, and an upper mold body 6 corresponding to the lower mold body 8 is slidably mounted inside the bracket 2; it also includes:

[0022] The magnetic component 9 and the positioning magnet 13 are provided. The magnetic component 9 is located at the bottom of the upper mold body 6. The upper mold body 6 has a groove 14 corresponding to the magnetic component 9. The groove 14 does not penetrate the upper mold body 6, but can pass through the upper mold body 6 to place the positioning magnet 13, which is attracted by the magnetic component 9, in the groove 14. The number of magnetic components 9, grooves 14 and positioning magnets 13 are the same and their positions are corresponding, which can ensure the complete correspondence and mutual attraction between the positioning magnets 13 and the magnetic components 9.

[0023] The upper mold lifting assembly and the magnet lifting assembly; the upper mold lifting assembly, which can control the upper mold body 6 to slide up and down, is connected to the bracket 2, and the magnet lifting assembly, which can control the positioning magnet 13 to slide up and down, is connected to the upper mold lifting assembly.

[0024] like Figure 2 As shown, the upper mold lifting assembly includes an electric telescopic rod 3, a support plate 4, and a connecting rod 5. The electric telescopic rod 3 is mounted on the bracket 2, and the support plate 4 is fixedly connected to the working end of the electric telescopic rod 3. The connecting rod 5 is fixedly connected below the support plate 4 and is also fixedly connected to the upper mold body 6. By setting the electric telescopic rod 3, the lifting and lowering control of the upper mold body 6 can be easily achieved through the support plate 4 and the connecting rod 5, thereby facilitating mold opening and closing.

[0025] like Figure 3As shown, the magnet lifting assembly is connected to the support plate 4; a connecting plate 15 is provided above the upper mold body 6 and is fixedly connected to all the magnet parts 9, and the connecting plate 15 is fixedly connected to the magnet lifting assembly. The magnet lifting assembly includes a motor 10, a lead screw 11, a lifting plate 16, and a connecting block 12; the motor 10 is provided on the support plate 4, and the lead screw 11 is fixedly connected to the output end of the motor 10; the lifting plate 16 is threadedly connected to the lead screw 11, and a connecting block 12 is fixedly connected below the lifting plate 16, and the connecting block 12 is fixedly connected to the connecting plate 15. A limit rod 17 is fixedly connected to the bottom of the support plate 4, and the lifting plate 16 is slidably sleeved on the limit rod 17; the limit rod 17 can restrict the rotation of the lifting plate 16, thereby converting the rotation of the lead screw 11 into the movement of the lifting plate 16, and driving the positioning magnet 13 to slide through the connecting block 12 and the connecting plate 15.

[0026] The principle of this utility model

[0027] like Figure 1 , 2 As shown in Figure 3, when the injection mold provided in this application is working normally, the positioning magnet 13 is located in the groove 14. The magnet 9 is placed below the upper mold body 6, and the positioning magnet 13 is used to position and attract the magnet 9, thereby ensuring the positioning stability of the magnet 9. When the electric telescopic rod 3 is activated, the upper mold body 6 moves downward under the drive of the support plate 4 and the connecting rod 5, thereby merging with the lower mold body 8. Using the injection molding equipment, molten plastic is added into the mold through the injection hole 7, so that the plastic fills the cavity and wraps the magnet 9. At this time, the positioning magnet 13 always maintains the state of attracting and fixing the magnet 9, so the molten plastic will not affect the stability of the magnet 9.

[0028] Once the plastic inside the mold begins to cool and gradually solidifies, and is no longer in a molten state, but before it is completely solidified, motor 10 can be started. Figure 3 As shown, the lifting plate 16 drives the positioning magnet 13 to move upward, moving the positioning magnet 13 away from the magnet part 9, so that the two no longer attract each other. This step is to separate the positioning magnet 13 from the magnet part 9 before the plastic is completely solidified, which will not affect the positioning effect of the magnet part 9, and the positioning magnet 13 will no longer attract the magnet part 9. When the plastic is completely solidified and the upper mold body 6 and the magnet part 9 move upward to prepare for demolding, it can avoid the strong attraction between the positioning magnet 13 and the magnet part 9 from attracting the magnet part 9 out of the solidified plastic, thereby increasing the stability of the magnet part 9 and the integrity of the lens cover assembly.

[0029] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. An injection mold for a lens cover assembly with a magnet, comprising a worktable (1), a lower mold body (8) fixedly disposed on the worktable (1), and an injection hole (7) provided on the lower mold body (8); a bracket (2) fixedly disposed on the worktable (1), and an upper mold body (6) corresponding to the lower mold body (8) slidingly disposed within the bracket (2); characterized in that, Also includes: A magnet (9) and a positioning magnet (13); the magnet (9) is disposed at the bottom of the upper mold body (6), and a groove (14) corresponding to the magnet (9) is provided in the upper mold body (6); the groove (14) does not penetrate the upper mold body (6), and the positioning magnet (13) that can pass through the upper mold body (6) to attract the magnet (9) is located in the groove (14); The upper mold lifting assembly and the magnet lifting assembly; the upper mold lifting assembly that can control the upper mold body (6) to slide up and down is connected to the bracket (2), and the magnet lifting assembly that can control the positioning magnet (13) to slide up and down is connected to the upper mold lifting assembly.

2. The injection mold for a lens cover assembly with a magnet component according to claim 1, characterized in that: The number of magnets (9), grooves (14), and positioning magnets (13) are the same and their positions correspond.

3. The injection mold for a lens cover assembly with a magnet component according to claim 1, characterized in that: The upper mold lifting assembly includes an electric telescopic rod (3), a support plate (4), and a connecting rod (5); the electric telescopic rod (3) is mounted on the bracket (2), and the support plate (4) is fixedly connected to the working end of the electric telescopic rod (3); the connecting rod (5) is fixedly connected to the support plate (4) below, and the connecting rod (5) is fixedly connected to the upper mold body (6).

4. The injection mold for a lens cover assembly with a magnet component according to claim 3, characterized in that: The magnet lifting assembly is connected to the support plate (4); a connecting plate (15) is provided above the upper mold body (6) and is fixedly connected to all the magnet parts (9), and the connecting plate (15) is fixedly connected to the magnet lifting assembly.

5. The injection mold for a lens cover assembly with a magnet component according to claim 4, characterized in that: The magnet lifting assembly includes a motor (10), a lead screw (11), a lifting plate (16), and a connecting block (12); the motor (10) is mounted on a support plate (4), and the lead screw (11) is fixedly connected to the output end of the motor (10); the lifting plate (16) is threadedly connected to the lead screw (11), and a connecting block (12) is fixedly connected below the lifting plate (16), and the connecting block (12) is fixedly connected to the connecting plate (15).

6. The injection mold for a lens cover assembly with a magnet component according to claim 5, characterized in that: The bottom of the support plate (4) is fixedly connected to a limiting rod (17), and the lifting plate (16) is slidably sleeved on the limiting rod (17).

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