Injection mold for vehicle-mounted plastic lens

Abstract

The utility model discloses an injection mold for a vehicle-mounted plastic lens in the field of injection molds, which comprises a fixed bottom plate, a diameter control sleeve and a height control core column, a plurality of positioning holes are uniformly distributed on the surface of the fixed bottom plate, the positioning holes are stepped holes, the diameter control sleeve is connected in the positioning holes in a sliding manner, and the height control core column is connected with the diameter control sleeve. An injection molding opening is formed in the top of the diameter control sleeve obliquely downwards, a circular limiting sliding groove is formed in one side of the bottom of the diameter control sleeve, a height control core column is slidably connected into the diameter control sleeve, and a limiting circular truncated cone is arranged at the bottom of the height control core column and slidably connected with the limiting sliding groove. According to the utility model, the thickness of the plastic lens is convenient to adjust, the demolding and the mold cleaning are convenient, and the use is convenient.

Description

Technical Field

[0001] This utility model relates to the field of injection molds, specifically to an injection mold for automotive plastic lenses. Background Technology

[0002] Automotive plastic lenses typically refer to lenses made of transparent plastic materials, primarily used in automotive cameras. Common materials include PMMA (acrylic) and PC (polycarbonate), which have high light transmittance and good processing properties, making them suitable for manufacturing optical lenses in automotive cameras. Due to their low cost and ease of processing, plastic lenses are widely used in automotive cameras.

[0003] Existing injection molds for plastic lenses have a fixed structure, which is not conducive to adjusting the lens thickness and is inconvenient for demolding, thus reducing work efficiency. Therefore, those skilled in the art have provided injection molds for automotive plastic lenses to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to provide an injection mold for automotive plastic lenses to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An injection mold for automotive plastic lenses includes a fixed base plate, a diameter control sleeve, and a height control core column. The fixed base plate has multiple positioning holes evenly distributed on its surface. These positioning holes are stepped holes. A diameter control sleeve is slidably connected within each positioning hole. An injection port is obliquely downward-sloping at the top of the diameter control sleeve. A circular limiting groove is provided on one side of the bottom of the diameter control sleeve. A height control core column is slidably connected inside the diameter control sleeve. A limiting frustum is provided at the bottom of the height control core column. The limiting frustum and the limiting groove are slidably connected. A fixed base is bolted to the bottom of the fixed base plate.

[0007] As a further embodiment of this utility model: a fan-shaped anti-rotation block is welded at the stepped hole of the positioning hole; the diameter control sleeve is a stepped frustum structure and has a symmetrically cut-off rotation positioning plane at its bottom; an inward clamping groove is provided on the rotation positioning plane; and the rotation positioning plane and the anti-rotation block are slidably connected.

[0008] As a further embodiment of this utility model: a push rod insertion hole is provided at the bottom center of the height control core column, and an electric push rod is fixedly embedded on the surface of the fixed base corresponding to the position of the positioning hole, and the electric push rod and the push rod insertion hole are slidably connected.

[0009] As a further improvement of this utility model, a reset spring is provided between the top of the limiting frustum and the bottom of the limiting slide groove.

[0010] As a further improvement of this utility model: the four corners of the fixed base plate are provided with mounting threaded holes, and the mounting threaded holes are connected to the fixed base by connecting bolts through threads for installation.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model utilizes a sliding connection between a height control core and a diameter control sleeve. The height of the height control core is lower than that of the diameter control sleeve. The top surface of the height control core and the inner surface of the diameter control sleeve together form the space of the injection mold. By selecting and replacing height control cores of different heights according to the required lens thickness, the thickness of the processed lens in the mold can be changed. By replacing diameter control sleeves with different inner diameters and matching height control cores, the diameter of the processed lens in the mold can be changed. This design is convenient and flexible to use.

[0013] 2. In this utility model, the electric push rod installed in the fixed base pushes the height control core column and the diameter control sleeve to slide through the push rod insertion hole after injection molding is completed. At this time, the return spring is compressed, and the limiting frustum and the limiting slide groove slide through the hole. The molded lens is pushed out of the diameter control sleeve by the height control core column, which is convenient for demolding and cleaning. It is easy to use and has high work efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a top view of the structure of this utility model;

[0016] Figure 3 This is a structural schematic diagram of cross-section AA in this utility model;

[0017] Figure 4 This is a schematic diagram of the bottom of the fixed base plate structure in this utility model;

[0018] Figure 5 This is a schematic diagram of the diameter control sleeve in this utility model;

[0019] Figure 6 This is a schematic diagram of the height control core column in this utility model.

[0020] In the diagram: 1. Fixed base plate; 2. Fixed base; 3. Positioning hole; 4. Diameter control sleeve; 5. Height control core column; 6. Connecting bolt; 7. Electric push rod; 8. Return spring; 9. Limiting groove; 10. Mounting threaded hole; 11. Anti-rotation block; 12. Rotation positioning plane; 13. Clamping groove; 14. Injection port; 15. Limiting frustum; 16. Push rod insertion hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-6 In this embodiment of the present invention, the injection mold for automotive plastic lenses includes a fixed base plate 1, a diameter control sleeve 4, and a height control core 5. Multiple positioning holes 3 are evenly distributed on the surface of the fixed base plate 1. The positioning holes 3 are stepped holes. The diameter control sleeve 4 is slidably connected inside the positioning holes 3. An injection port 14 is obliquely downwards at the top of the diameter control sleeve 4. A circular limiting groove 9 is provided on one side of the bottom of the diameter control sleeve 4. The height control core 5 is slidably connected inside the diameter control sleeve 4. A limiting frustum 15 is provided at the bottom of the height control core 5. The limiting frustum 15 and the limiting groove 9 are slidably connected. Replacing the diameter control sleeve 4 and the height control core 5 can change the diameter and thickness of the processed lens. The operation is simple and convenient. A fixed base 2 is bolted to the bottom of the fixed base plate 1.

[0023] Among them, a fan-shaped anti-rotation block 11 is welded at the stepped hole of the positioning hole 3, the diameter control sleeve 4 is a stepped frustum structure and the bottom is provided with a symmetrically cut rotation positioning plane 12, and an inward clamping groove 13 is provided on the rotation positioning plane 12 to facilitate the removal of the diameter control sleeve 4. The rotation positioning plane 12 and the anti-rotation block 11 are slidably connected to prevent the diameter control sleeve 4 from rotating relative to the fixed base plate 1, which would affect the processing quality.

[0024] Among them, the bottom center of the height control core column 5 is provided with a push rod insertion hole 16, and the surface of the fixed base 2 is fixedly embedded with an electric push rod 7 at the position corresponding to the positioning hole 3. The electric push rod 7 and the push rod insertion hole 16 are slidably connected. The electric push rod 7 is used to push the height control core column 5 to push out the injection molded lens, which is convenient for demolding and cleaning the mold and is easy to use.

[0025] Among them, a return spring 8 is provided between the top of the limiting frustum 15 and the bottom of the limiting slide 9 to ensure that the height control core 5 can return to the initial position after demolding, thus ensuring the processing quality.

[0026] The base plate 1 has four threaded holes 10 at its four corners. The threaded holes 10 are connected to the base plate 2 by threaded bolts 6, which are easy to install and disassemble and facilitate adjustment of the processing dimensions.

[0027] The working principle of this utility model is as follows: When installing this utility model, select a suitable diameter control sleeve 4 and height control core 5 according to the size of the processed lens. Insert the diameter control sleeve 4 into the positioning hole 3, so that the rotation positioning plane 12 on the diameter control sleeve 4 is slidably connected with the anti-rotation block 11 at the bottom of the positioning hole 3 to prevent the diameter control sleeve 4 from rotating relative to the lens. First, install a return spring 8 in the limiting slide groove 9 at the bottom of the diameter control sleeve 4, and then install the height control core 5 so that the height control core 5 is slidably connected with the inner side of the diameter control sleeve 4. The limiting slide of the height control core 5 is connected with the diameter control... The limiting groove 9 of the sleeve 4 is slidably connected. Finally, the fixed base plate 1 is installed on the fixed base 2 by the connecting bolt 6, so that the push rod of the electric push rod 7 is inserted into the push rod insertion hole 16 at the bottom of the diameter control sleeve 4. During injection molding, the raw material is poured from the injection port 14 on the surface of the diameter control sleeve 4 into the mold formed by the inner diameter of the diameter control sleeve 4 and the top surface of the height control core 5. After cooling, the electric push rod 7 is activated to push the height control core 5 to slide and connect with the diameter control sleeve 4. The height control core 5 drives the injection-molded lens to extend out of the diameter control sleeve 4, which is convenient for demolding and mold cleaning.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An injection mold for automotive plastic lenses, comprising a fixed base plate (1), a diameter control sleeve (4), and a height control core (5), characterized in that: The fixed base plate (1) has multiple positioning holes (3) evenly distributed on its surface. The positioning holes (3) are stepped holes. A diameter control sleeve (4) is slidably connected inside the positioning holes (3). An injection port (14) is obliquely downward on the top of the diameter control sleeve (4). A circular limiting groove (9) is provided on one side of the bottom of the diameter control sleeve (4). A height control core column (5) is slidably connected inside the diameter control sleeve (4). A limiting frustum (15) is provided at the bottom of the height control core column (5). The limiting frustum (15) and the limiting groove (9) are slidably connected. A fixed base (2) is bolted to the bottom of the fixed base plate (1). The bottom center of the height control core (5) is provided with a push rod insertion hole (16), and an electric push rod (7) is fixedly embedded on the surface of the fixed base (2) corresponding to the position of the positioning hole (3). The electric push rod (7) and the push rod insertion hole (16) are slidably connected.

2. The injection mold for automotive plastic lenses according to claim 1, characterized in that: A fan-shaped anti-rotation block (11) is welded at the stepped hole of the positioning hole (3). The diameter control sleeve (4) is a stepped frustum structure and has a symmetrically cut rotation positioning plane (12) at its bottom. An inward clamping groove (13) is provided on the rotation positioning plane (12). The rotation positioning plane (12) and the anti-rotation block (11) are slidably connected.

3. The injection mold for automotive plastic lenses according to claim 1, characterized in that: A reset spring (8) is provided between the top of the limiting frustum (15) and the bottom of the limiting slide (9).

4. The injection mold for automotive plastic lenses according to claim 1, characterized in that: The fixed base plate (1) is provided with mounting threaded holes (10) at its four corners. The mounting threaded holes (10) are connected to the fixed base (2) by connecting bolts (6) through threads.

Images