Improved lens mold

Abstract

The utility model discloses an improved lens mould, relates to production mould technical field, including lower mould block and upper mould block, the top end of lower mould block is equipped with the connecting subassembly, connecting subassembly includes middle circle, first locating piece, second locating piece, lower mould block and upper mould block side end portion both have locating slot, and the locating slot is equipped with the first locating piece, the second locating piece is equipped with the second locating piece. The lower die block is in butt joint with the first positioning block, the second positioning block is in butt joint with the side end of the upper die block, the lower die block and the upper die block are in butt joint in a staggered mode, and after threaded holes and positioning pin holes in the bottom of the upper die block and corresponding threaded holes and positioning pin holes in the bottom of the lower die block are positioned through positioning pins, bolts and other fasteners are used for preliminary fixing. Through the positioning pin hole, the threaded hole, and the first positioning block and the second positioning block which are arranged on the two sides of the middle ring in a protruding mode, it is ensured that the lower die block and the upper die block keep high concentricity in the working process, and the profiling distance of a product is stable.

Description

Technical Field

[0001] This utility model relates to the field of mold manufacturing technology, and in particular to an improved lens mold. Background Technology

[0002] The working principle of lens molds is to inject molten plastic, glass, or other materials into a mold cavity using injection molding, die casting, or other molding processes. After cooling and solidification, a lens with a specific shape and optical parameters is formed. In practical applications, lens molds typically require the following technologies:

[0003] 1. Mold cavity, used to fix the shape and optical parameters of the lens;

[0004] 2. Demolding mechanism, used to remove the formed lens from the mold;

[0005] 3. Cooling system, used to control the temperature of the mold;

[0006] Currently, existing lens molds (such as patent publication number: CN218019626U) disclose a lens mold in which, by pulling any set of connecting plates, the two sets of connecting plates are simultaneously driven by the gears and racks to move the two sets of pull rods outward, thereby allowing the limiting of the cavity mold to be released by one hand.

[0007] The molding process of glass lenses results in glass precipitates along the outer edge of the product, uneven thickness, and irregular shape, which makes cold processing difficult, reduces raw material utilization, requires separate personnel to perform edge marking and chipping, increases labor costs, and makes it difficult to control the molding distance of the mold, sometimes leading to insufficient product forming and an increased defect rate. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model provides an improved lens mold that solves the technical problems caused by the molding method of glass lenses, such as glass precipitation at the outer edge of the product, uneven thickness, irregular shape, difficulty in cold processing, difficulty in controlling the molding distance of the mold, and sometimes resulting in insufficient product forming and increased processing defect rate.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] An improved lens mold includes a lower module and an upper module. The top of the lower module is provided with a connecting component, which includes a middle ring, a first positioning block, and a second positioning block. Positioning grooves are provided on the side ends of both the lower module and the upper module. The lower module is connected to the first positioning block, and the second positioning block is connected to the side end of the upper module. The lower module and the upper module are interlocked.

[0011] The second positioning block is located at the top of the middle ring and cooperates with the upper module. The interior of the second positioning block is provided with a bottom hole for docking. The first positioning block is located at the bottom of the middle ring and cooperates with the lower module. The interior of the first positioning block is provided with screw holes for installation.

[0012] Preferably, the top of the lower module is a molded surface with an extrusion edge, and is also provided with a positioning groove that mates with the middle ring;

[0013] The top of the lower module is provided with multiple positioning holes for positioning and installation.

[0014] The top of the lower module is provided with multiple countersunk holes that slide with spring guide posts. Each countersunk hole is provided with a spring and a spring guide post that mate with the middle ring.

[0015] Preferably, both the lower module and the upper module have threaded holes and positioning pin holes at their bottom ends for docking with the mounting bracket;

[0016] Both the lower and upper modules are provided with temperature measuring holes and heating holes in the middle for connecting the processing device.

[0017] Compared with the prior art, the present invention has the following beneficial effects;

[0018] In this invention, the lower module, upper module, and middle ring are assembled using springs and spring guide posts. The molding surfaces at the top of the upper module and the lower module work together to form the shape of a lens. The molding surfaces of the upper and lower modules have precipitation edges, which can guide impurities and other precipitates in the glass to flow in a specific direction during the glass forming process, reducing the impact of glass precipitates on the quality of the lens and ensuring the quality of product production.

[0019] In this utility model, after the threaded holes and positioning pin holes at the bottom of the upper module are aligned with the corresponding threaded holes and positioning pin holes at the bottom of the lower module, they are initially fixed using fasteners such as bolts. Through the positioning pin holes, threaded holes, and the first and second positioning blocks with protrusions on both sides of the middle ring, the lower and upper modules maintain a high degree of concentricity during operation, ensuring stable product forming distance. Attached Figure Description

[0020] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0021] Figure 1 This is an assembly drawing of the mold for this utility model;

[0022] Figure 2 This is a structural diagram of the upper module of this utility model;

[0023] Figure 3 This is a structural diagram of the lower module of this utility model;

[0024] Figure 4 This is a structural diagram of the middle ring of this utility model.

[0025] Legend: 11. Lower module; 12. Upper module; 13. Middle ring; 14. First positioning block; 15. Second positioning block; 16. Positioning hole; 17. Countersunk hole. Detailed Implementation

[0026] This application provides an improved lens mold that effectively solves the problems caused by the molding method of glass lenses, such as glass precipitation at the outer edge of the product, uneven thickness, irregular shape, difficulty in cold working, difficulty in controlling the molding distance of the mold, and sometimes insufficient product forming, resulting in an increased defect rate. By assembling the lower module, upper module, and middle ring using springs and spring guide pillars, the molding surfaces at the top of the upper module and the lower module work together to form the shape of the lens. The molding surfaces of the upper and lower modules have precipitation edges, which can guide impurities and other precipitates in the glass to flow in a specific direction during the glass molding process, reducing the impact of glass precipitates on the lens quality and ensuring the quality of product production.

[0027] Example

[0028] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the technical solution in this application embodiment effectively solves the technical problems caused by the molding method of glass lenses, which results in glass precipitation at the outer edge of the product, uneven thickness, irregular shape, difficulty in cold working, difficulty in controlling the molding distance of the mold, and sometimes incomplete product forming, increasing the defect rate. The overall idea is as follows:

[0029] To address the problems existing in the prior art, this utility model provides an improved lens mold, including a lower module 11 and an upper module 12. The top of the lower module 11 is provided with a connecting component, which includes a middle ring 13, a first positioning block 14, and a second positioning block 15. Positioning grooves are provided on the side ends of both the lower module 11 and the upper module 12. The lower module 11 is connected to the first positioning block 14, and the second positioning block 15 is connected to the side end of the upper module 12. The lower module 11 and the upper module 12 are interlocked.

[0030] The second positioning block 15 is located at the top of the middle ring 13 and cooperates with the upper module 12. The interior of the second positioning block 15 is provided with a bottom hole for docking. The first positioning block 14 is located at the bottom of the middle ring 13 and cooperates with the lower module 11. The interior of the first positioning block 14 is provided with a screw hole for installation. The top of the lower module 11 is a molded surface with a protruding edge and a positioning groove that cooperates with the middle ring 13. The four second positioning blocks 15 on the upper part of the middle ring 13 cooperate with the upper module 12 and are bolted to the lower module 11 by bolts passing through the screw holes inside the second positioning blocks 15. The lower part of the middle ring 13 has four first positioning blocks 14 that cooperate with the lower module 11. The interior of the first positioning block 14 is provided with a bottom hole that cooperates with the spring. At the same time, the spring and spring guide post are respectively installed between the middle ring 13 and the lower module 11. The spring guide post is a cylinder and plays a guiding role.

[0031] The top of the lower module 11 is provided with multiple positioning holes 16 for positioning and installation. The top of the lower module 11 is provided with multiple countersunk holes 17 that slide with the spring guide post. Each countersunk hole 17 is provided with a spring and spring guide post that mate with the middle ring 13. The bottom ends of the lower module 11 and the upper module 12 are provided with threaded holes and positioning pin holes for mate with the mounting bracket. By assembling the lower module 11, the upper module 12, the spring, the spring guide post and the middle ring 13, the threaded holes and positioning pin holes at the bottom of the upper module 12 are positioned with the corresponding threaded holes and positioning pin holes at the bottom of the lower module 11 by positioning pins, and then the bolts and other fasteners are used for initial fixation.

[0032] Both the lower module 11 and the upper module 12 are provided with temperature measuring holes and heating holes for connecting the processing device in the middle. The mold is heated through the heating holes in the middle of the upper module 12 and the lower module 11 to make the mold reach a temperature suitable for glass forming. When the temperature is reached, the molten glass is injected into the mold. The forming surface at the top of the upper module 12 and the forming surface at the top of the lower module 11 work together to form the shape of a lens.

[0033] Working principle:

[0034] In the first step of injection molding, plastic granules are first heated and melted, and then the molten plastic is injected into the mold cavity through an injection molding machine. The lower module 11, upper module 12, spring, spring guide post and middle ring 13 are assembled. The threaded hole and positioning pin hole at the bottom of the upper module 12 are positioned with the corresponding threaded hole and positioning pin hole at the bottom of the lower module 11 by positioning pins, and then initially fixed with fasteners such as bolts. The four second positioning blocks 15 on the upper part of the middle ring 13 cooperate with the upper module 12, and are bolted to the lower module 11 by bolts passing through the screw holes inside the second positioning blocks 15. The lower part of the middle ring 13 has four first positioning blocks 14 that cooperate with the lower module 11. The first positioning blocks 14 have bottom holes inside, which cooperate with the spring. At the same time, the spring and spring guide post are installed between the middle ring 13 and the lower module 11 respectively. The spring guide post is a cylinder and plays a guiding role, and the lower module 11, spring guide post and middle ring 13 are installed together.

[0035] The second step involves heating the mold through the heating holes in the middle of the upper module 12 and the lower module 11 to bring the mold to a suitable temperature for glass forming. Once the temperature is reached, molten glass is injected into the mold. The forming surfaces at the top of the upper module 12 and the lower module 11 work together to form the shape of a lens. The forming surfaces of the upper module 12 and the lower module 11 have precipitation edges, which can guide impurities and other precipitates in the glass to flow in a specific direction during the glass forming process, reducing the impact of glass precipitates on the quality of the lens.

[0036] During the glass injection and molding process, stress is generated due to the flow and cooling contraction of the glass. At this time, the spring plays a role. When the stress is applied to the mold, the spring will compress or extend according to the magnitude of the stress, thereby automatically adjusting the pressure inside the mold. When the stress reaches a certain level, the glass will automatically break according to the stress without the need for additional cold working.

[0037] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An improved lens mold, comprising a lower module (11) and an upper module (12), characterized in that, The lower module (11) is provided with a connecting component at its top. The connecting component includes a middle ring (13), a first positioning block (14), and a second positioning block (15). The lower module (11) and the upper module (12) are provided with positioning grooves on their side ends. The lower module (11) is connected to the first positioning block (14), and the second positioning block (15) is connected to the side end of the upper module (12). The lower module (11) and the upper module (12) are connected to each other in an alternating manner. The second positioning block (15) is located at the top of the middle ring (13) and cooperates with the upper module (12). The interior of the second positioning block (15) is provided with a bottom hole for docking. The first positioning block (14) is located at the bottom of the middle ring (13) and cooperates with the lower module (11). The interior of the first positioning block (14) is provided with screw holes for installation.

2. The improved lens mold as described in claim 1, characterized in that, The top of the lower module (11) is a molding surface with an extrusion edge, and it is also provided with a positioning groove that cooperates with the middle ring (13).

3. The improved lens mold as described in claim 1, characterized in that, The top of the lower module (11) is provided with a plurality of positioning holes (16) for positioning and installation.

4. An improved lens mold as described in claim 1, characterized in that, The lower module (11) has multiple countersunk holes (17) at its top end that slide with spring guide posts. Each countersunk hole (17) is equipped with a spring and a spring guide post that mate with the middle ring (13).

5. An improved lens mold as described in claim 1, characterized in that, Both the lower module (11) and the upper module (12) are provided with threaded holes and positioning pin holes at their bottom ends for docking with the mounting bracket.

6. An improved lens mold as described in claim 1, characterized in that, The lower module (11) and the upper module (12) are both provided with temperature measuring holes and heating holes for connecting the processing device in the middle.

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