Optical plastic lens mold
By introducing telescopic columns and spring structures into the optical plastic lens mold, the mold is made to swing up and down to expel gas, which solves the bubble problem during injection molding, achieves high-density injection molding and convenient demolding, and improves the quality of the finished lens.
Patent Information
- Application Number
- CN202422845830.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-11-21
AI Technical Summary
During injection molding of existing optical plastic lens molds, the presence of gas in the molding cavity leads to low contact density of the injection molding raw materials, resulting in bubbles and affecting the surface quality of the finished product.
An optical plastic lens mold was designed. By introducing a telescopic column and spring structure into the mold, the mold can be shaken up and down to expel gas. The piston rod and piston disc structure facilitates demolding. The mold size is adjusted by combining forward and reverse screws and a crank to achieve high-density contact with the injection molding raw materials.
The quality of the finished product of injection molding is improved, the surface of the lens is ensured to be flawless, and the demoulding operation is facilitated.
Smart Images
Figure CN223354818U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lens molds, in particular to an optical plastic lens mold. Background Art
[0002] Optical plastic lenses are lenses made of plastic materials used in various optical applications. They are widely used in glasses, cameras, optical instruments and other fields. Plastic lenses are mostly made of engineering plastics. Plastic lenses are usually molded by compression molding or injection molding, and molds are required during molding.
[0003] When a plastic lens is injection molded, the molding material is injected into the mold for injection molding. However, in the prior art, when the molding material enters the molding cavity during the injection mold, there may be gas in the molding cavity, so that bubbles may exist between the molding materials due to the gas, resulting in a low contact density between the molding materials, which in turn causes defects on the surface of the subsequent finished product. Therefore, an optical plastic lens mold is proposed. Utility Model Content
[0004] In view of the deficiencies of the prior art, the present invention provides an optical plastic lens mold to solve the problems mentioned in the above background technology.
[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an optical plastic lens mold, comprising a forming table, a lower mold and an upper mold, wherein the top outer surface of the forming table is fixedly connected to two side plates arranged symmetrically on the left and right, a first spring is fixedly connected between the opposite outer surfaces of the two side plates, the other end of the first spring is fixedly connected to a connecting block, the top outer surface of the connecting block is fixedly connected to a first rotating seat, the outer surface of the first rotating seat is rotatably connected to a telescopic column, the other end of the telescopic column is rotatably connected to a second rotating seat, and the outer surface of the second rotating seat is fixedly connected to an L-shaped plate.
[0006] Furthermore, a plurality of forming cylinders are provided on the bottom outer surface of the lower mold, a forming cavity is opened inside the forming cylinder, the inner surface of the forming cavity is movably connected with a piston disk, the bottom outer surface of the piston disk is fixedly connected with a piston rod, the bottom outer surface of the piston rod is fixedly connected with a disc, the bottom outer surfaces of multiple discs are fixedly connected with a bottom plate, a second spring is fixedly connected between the disc and the lower mold, and the second spring is sleeved on the outer surface of the piston rod and the forming cylinder.
[0007] Furthermore, two vertical plates are provided above the forming table, and hollow slides are fixedly connected to the front and rear outer surfaces of the lower mold, and the two hollow slides are movably sleeved on the outer surfaces of the two vertical plates respectively.
[0008] Furthermore, the bottom outer surface of the forming table is fixedly connected to two fixed plates arranged symmetrically in the front and back, and a forward and reverse screw rod is rotatably connected between the two fixed plates. The forward and reverse screw rod rotates through the front fixed plate, and the front outer surfaces of the forward and reverse screw rods are fixedly connected to a crank. The outer surfaces of the forward and reverse screw rods are threadedly connected to two threaded plates, and the top outer surfaces of the two threaded plates are fixedly connected to sliders, and the two vertical plates are respectively fixedly connected to the top outer surfaces of the two sliders.
[0009] Furthermore, the opposite outer surfaces of the two side plates are fixedly connected with sliding rods, the two first springs are respectively sleeved on the outer surfaces of the two sliding rods, and the two connecting blocks are respectively sleeved on the outer surfaces of the two sliding rods.
[0010] Furthermore, the left and right outer surfaces of the lower mold are fixedly connected with fixed ear plates, and the outer surfaces of the fixed ear plates and the L-shaped plates are provided with connecting holes. Bolts are provided in the corresponding connecting holes of the fixed ear plates and the L-shaped plates, and the outer surfaces of the bolts are threaded with nuts.
[0011] Furthermore, two slide grooves are provided on the top outer surface of the forming table, and the two sliding blocks are respectively slidably connected to the inside of the two slide grooves.
[0012] Furthermore, the telescopic column includes a fixed column and a movable column, the movable column is movably inserted into the interior of the fixed column, the outer surfaces of the fixed column and the movable column are provided with screw holes, there are several screw holes on the surface of the movable column and they are arranged in a linear array, and the screw holes corresponding to the fixed column and the movable column are threadedly connected to an adjusting handwheel.
[0013] Compared with the prior art, the beneficial effects of the present invention are:
[0014] 1. This optical plastic lens mold applies force to the mold, causing the telescopic column to rotate between the first rotating seat and the second rotating seat. Cooperating with the first spring, the mold is shaken up and down, thereby expelling gas as much as possible, increasing the contact density between the injection molding materials inside the mold, and improving the quality of the finished product.
[0015] 2. The optical plastic lens mold applies downward force to the mold, causing the molding table to squeeze the bottom plate, driving the piston rod and piston plate, so that the piston plate pushes out the molded lens, thereby facilitating demoulding of the molded lens.
[0016] 3. The optical plastic lens mold can be adapted to molds of different sizes by rotating the crank to drive the forward and reverse screws to rotate and adjust the positions of the two vertical plates. The L-shaped plate is connected to the fixed ear plate by adjusting the length and angle of the telescopic column. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1This is a schematic diagram of the front view structure of the utility model;
[0018] Figure 2 This is a schematic diagram of the structure of the utility model when viewed from above;
[0019] Figure 3 This is a schematic diagram of the partial internal structure of the lower mold of the utility model;
[0020] Figure 4 For this utility model Figure 1 Enlarged structural diagram at point A in the middle.
[0021] In the figure: 1. forming table; 2. lower mold; 3. upper mold; 4. side plate; 5. first spring; 6. connecting block; 7. telescopic column; 8. L-shaped plate; 9. forward and reverse screw rods; 10. crank; 11. threaded plate; 12. vertical plate; 13. hollow slide plate; 14. forming cylinder; 15. forming cavity; 16. piston disc; 17. piston rod; 18. second spring; 19. bottom plate; 20. fixing ear plate; 21. bolt. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1
[0023] Please refer to Figures 1-4The utility model provides a technical solution: an optical plastic lens mold, including a molding table 1, a lower mold 2 and an upper mold 3. The top outer surface of the molding table 1 is fixedly connected to two side plates 4 that are symmetrically arranged on the left and right. A first spring 5 is fixedly connected between the opposite outer surfaces of the two side plates 4. The other end of the first spring 5 is fixedly connected to a connecting block 6. The top outer surface of the connecting block 6 is fixedly connected to a first rotating seat. The outer surface of the first rotating seat is rotatably connected to a telescopic column 7. The other end of the telescopic column 7 is rotatably connected to a second rotating seat. The outer surface of the second rotating seat is fixedly connected to an L-shaped plate 8. Specifically, the upper mold 3 is aligned with the lower mold 2, and the injection molding material is injected into the mold for injection molding. The raw material enters the molding cylinder 14 and is molded through the molding cavity 15. During the molding process, force is applied to the assembly mold composed of the upper mold 3 and the lower mold 2, which can cause the mold to shake up and down. When force is applied to the mold, the telescopic column 7 rotates between the first rotating seat and the second rotating seat, and causes the connecting block 6 to move, so that the connecting block 6 drives the first spring 5 to deform it. Under the action of the first spring 5, the mold shakes up and down, and then force is applied to the mold until the mold is in a static and stable state, and the molding work is carried out, so that the mold can be shaken and the gas is discharged as much as possible, so that the contact density between the injection molding materials inside the mold is larger, and the quality of the finished product is improved.
[0024] In this embodiment, a plurality of molding cylinders 14 are provided on the bottom outer surface of the lower mold 2, and a molding cavity 15 is formed inside the molding cylinder 14. The inner surface of the molding cavity 15 is movably connected to a piston disk 16. The bottom outer surface of the piston disk 16 is fixedly connected to a piston rod 17. The bottom outer surface of the piston rod 17 is fixedly connected to a disk. The bottom outer surfaces of the plurality of disks are fixedly connected to a bottom plate 19. A second spring 18 is fixedly connected between the disk and the lower mold 2. The second spring 18 is sleeved on the piston rod 17 and the outer surface of the molding cylinder 14. Specifically, after the injection molding work is completed, a downward force is applied to the mold so that the bottom plate 19 contacts the surface of the molding table 1. The downward force is continued to be applied to the mold. The molding table 1 squeezes the bottom plate 19, so that the bottom plate 19 drives the piston rod 17 to move the piston disk 16 upward. At this time, the second spring 18 is compressed, and the finished lens in the molding cavity 15 is ejected through the piston disk 16, thereby facilitating the demolding of the molded lens. When the force on the mold is stopped, the mold is reset under the elastic force of the second spring 18.
[0025] In this embodiment, two vertical plates 12 are provided above the forming table 1, and hollow slides 13 are fixedly connected to the front and rear outer surfaces of the lower mold 2. The two hollow slides 13 are movably mounted on the outer surfaces of the two vertical plates 12 respectively. Specifically, when the mold moves up and down, the hollow slides 13 slide along the vertical plates 12, so that the mold can swing up and down stably.
[0026] In this embodiment, the bottom outer surface of the forming table 1 is fixedly connected to two fixed plates that are symmetrically arranged in the front and back, and a forward and reverse screw rod 9 is rotatably connected between the two fixed plates. The forward and reverse screw rod 9 rotates and passes through the front fixed plate. The front outer surface of the forward and reverse screw rod 9 is fixedly connected to a crank 10. The outer surface of the forward and reverse screw rod 9 is threadedly connected to two threaded plates 11. The top outer surfaces of the two threaded plates 11 are fixedly connected to sliders, and the two vertical plates 12 are respectively fixedly connected to the top outer surfaces of the two sliders. Specifically, by turning the crank 10, the crank 10 drives the forward and reverse screw rod 9 to rotate, so that the two threaded plates 11 respectively drive the sliders so that the distance between the two vertical plates 12 changes, thereby being suitable for molds of different sizes.
[0027] In this embodiment, the opposing outer surfaces of the two side plates 4 are fixedly connected with sliding rods, the two first springs 5 are respectively sleeved on the outer surfaces of the two sliding rods, and the two connecting blocks 6 are respectively sleeved on the outer surfaces of the two sliding rods. Specifically, when the telescopic column 7 is driven by force to drive the connecting block 6 to move, the connecting block 6 slides on the surface of the sliding rod, and the first spring 5 is limited by the sliding rod to prevent the first spring 5 from tilting and deforming.
[0028] In this embodiment, the left and right outer surfaces of the lower mold 2 are fixedly connected with fixed ear plates 20, and the outer surfaces of the fixed ear plates 20 and the L-shaped plate 8 are provided with connecting holes. Bolts 21 are provided in the corresponding connecting holes of the fixed ear plates 20 and the L-shaped plate 8, and the outer surface of the bolts 21 is threadedly connected with nuts. Specifically, when installing the lower mold 2, the connecting holes on the fixed ear plates 20 on the side of the lower mold 2 are made to correspond to the connecting holes on the L-shaped plate 8, and the bolts 21 are inserted into the connecting holes, and then the nuts are screwed on the surface of the bolts 21 to connect the fixed ear plates 20 and the L-shaped plate 8, thereby fixing the lower mold 2.
[0029] In this embodiment, two slide grooves are provided on the top outer surface of the forming table 1, and the two sliders are respectively slidably connected to the inside of the two slide grooves. Specifically, when the forward and reverse screw rods 9 rotate, the two sliders slide respectively inside the two slide grooves, and the slide grooves provide channels for the movement of the sliders.
[0030] In this embodiment, the telescopic column 7 includes a fixed column and a movable column. The movable column is movably inserted into the interior of the fixed column. Screw holes are provided on the outer surfaces of the fixed column and the movable column. There are several screw holes on the surface of the movable column and they are arranged in a linear array. The screw holes corresponding to the fixed column and the movable column are threadedly connected with an adjusting handwheel. Specifically, unscrew the adjusting handwheel, adjust the position of the movable column inside the fixed column, and then screw the adjusting handwheel into the corresponding screw hole to adjust the overall length of the telescopic column 7.
[0031] Working principle: When the present invention is in use, the upper mold 3 is aligned with the lower mold 2, and the injection molding material is injected into the mold. The injection molding material enters the molding cylinder 14 and is molded through the molding cavity 15. During the molding process, force is applied to the assembly mold composed of the upper mold 3 and the lower mold 2, which can make the mold shake up and down. When force is applied to the mold, the telescopic column 7 rotates between the first rotating seat and the second rotating seat, and moves the connecting block 6, so that the connecting block 6 drives the first spring 5 to deform it. Under the action of the first spring 5, the mold shakes up and down, and then force is applied to the mold until the mold is in a static and stable state, and the molding work is carried out, so that the mold can shake and the gas is discharged as much as possible, so that the contact density between the injection molding materials inside the mold is larger, thereby improving the quality of the finished product.
[0032] After the injection molding is completed, a downward force is applied to the mold, so that the bottom plate 19 contacts the surface of the forming table 1. The downward force is continued to be applied to the mold, and the forming table 1 squeezes the bottom plate 19, so that the bottom plate 19 drives the piston rod 17 to move the piston plate 16 upward. At this time, the second spring 18 is compressed, and the finished lens in the molding cavity 15 is ejected through the piston plate 16, thereby facilitating the demoulding of the molded lens. When the force on the mold is stopped, the mold is reset under the elastic force of the second spring 18.
[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An optical plastic lens mold, comprising a molding table (1), a lower mold (2) and an upper mold (3), characterized in that: The top outer surface of the forming table (1) is fixedly connected to two side plates (4) arranged in a left-right symmetrical manner, a first spring (5) is fixedly connected between the opposite outer surfaces of the two side plates (4), the other end of the first spring (5) is fixedly connected to a connecting block (6), the top outer surface of the connecting block (6) is fixedly connected to a first rotating seat, the outer surface of the first rotating seat is rotatably connected to a telescopic column (7), the other end of the telescopic column (7) is rotatably connected to a second rotating seat, and the outer surface of the second rotating seat is fixedly connected to an L-shaped plate (8).
2. The optical plastic lens mold according to claim 1, characterized in that: The bottom outer surface of the lower mold (2) is provided with a plurality of molding cylinders (14), a molding cavity (15) is provided inside the molding cylinder (14), the inner surface of the molding cavity (15) is movably connected to a piston disk (16), the bottom outer surface of the piston disk (16) is fixedly connected to a piston rod (17), the bottom outer surface of the piston rod (17) is fixedly connected to a disk, the bottom outer surfaces of the plurality of disks are fixedly connected to a bottom plate (19), a second spring (18) is fixedly connected between the disk and the lower mold (2), and the second spring (18) is sleeved on the outer surface of the piston rod (17) and the molding cylinder (14).
3. The optical plastic lens mold according to claim 1, characterized in that: Two vertical plates (12) are provided above the forming table (1), and hollow slides (13) are fixedly connected to the front and rear outer surfaces of the lower mold (2), and the two hollow slides (13) are movably sleeved on the outer surfaces of the two vertical plates (12).
4. The optical plastic lens mold according to claim 3, characterized in that: The bottom outer surface of the forming table (1) is fixedly connected to two fixed plates arranged symmetrically in the front and back directions, a forward and reverse screw rod (9) is rotatably connected between the two fixed plates, the forward and reverse screw rod (9) rotates through the front fixed plate, a crank (10) is fixedly connected to the front outer surface of the forward and reverse screw rod (9), the outer surface of the forward and reverse screw rod (9) is threadedly connected to two threaded plates (11), the top outer surfaces of the two threaded plates (11) are fixedly connected to sliders, and the two vertical plates (12) are fixedly connected to the top outer surfaces of the two sliders respectively.
5. The optical plastic lens mold according to claim 1, characterized in that: The opposing outer surfaces of the two side plates (4) are fixedly connected with a slide rod, the two first springs (5) are respectively sleeved on the outer surfaces of the two slide rods, and the two connecting blocks (6) are respectively sleeved on the outer surfaces of the two slide rods.
6. The optical plastic lens mold according to claim 1, characterized in that: The left and right outer surfaces of the lower mold (2) are fixedly connected with fixed ear plates (20), and the outer surfaces of the fixed ear plates (20) and the L-shaped plate (8) are provided with connection holes. Bolts (21) are provided in the corresponding connection holes of the fixed ear plates (20) and the L-shaped plate (8), and the outer surfaces of the bolts (21) are threadedly connected with nuts.
7. The optical plastic lens mold according to claim 4, characterized in that: Two slide grooves are provided on the top outer surface of the forming table (1), and the two sliding blocks are respectively slidably connected to the inside of the two slide grooves.
8. The optical plastic lens mold according to claim 1, characterized in that: The telescopic column (7) comprises a fixed column and a movable column, the movable column is movably inserted into the interior of the fixed column, the outer surfaces of the fixed column and the movable column are both provided with screw holes, the screw holes on the surface of the movable column are multiple and arranged in a linear array, and the screw holes corresponding to the fixed column and the movable column are threadedly connected to an adjusting hand wheel.