Lens forming jig

Abstract

The utility model relates to the technical field of forming jig, disclose a lens forming jig, including base, elastic buffer component, mould pressing subassembly and guide pulley set, be provided with the positioning piece on the base, elastic buffer component includes buffer column, guide bushing and buffer cylinder, buffer column sets up in the base, and extends along the vertical direction, the guide bushing is sleeved in buffer column, and both ends of guide bushing are provided with elastic buffer piece, buffer cylinder is sleeved in the outside of guide bushing, can produce sliding friction between guide bushing, elastic buffer component is worn in mould pressing subassembly, and mould pressing subassembly is linked with buffer cylinder, and along buffer column elasticity lifts and falls, guide pulley set is set up in the base, and is higher than mould pressing subassembly, one end of connecting line is linked with the base, and the other end is connected with gravity block through the guidance of guide pulley set. Mould pressing subassembly buffers through the sliding friction between elastic buffer piece and buffer cylinder and guide bushing, double buffering, prolongs the life, gravity block drives mould pressing subassembly and automatically lifts, need not manual operation.

Description

Technical Field

[0001] This utility model relates to the field of molding fixture technology, and in particular to a lens molding fixture. Background Technology

[0002] A lens forming fixture generally includes a positioning base and a molding assembly. The positioning base is used to position the mold, and the molding assembly can be raised and lowered to press against the mold, thereby forming the lens. However, in existing technologies, the lifting of the molding assembly is usually done manually, which is laborious; moreover, the molding assembly is usually connected to a buffer spring, which provides a cushioning effect, but the buffer spring is prone to fatigue and has a short service life. Therefore, there is an urgent need to design a lens forming fixture to solve the above problems. Utility Model Content

[0003] The purpose of this invention is to provide a lens forming fixture that solves the technical problems in the prior art, such as the laboriousness of manually lifting the molding component and the fact that the molding component is cushioned by a buffer spring, which is prone to fatigue and has a short service life.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] This utility model provides a lens forming fixture, comprising:

[0006] A base on which a positioning element is provided, the positioning element being used to position the mold;

[0007] An elastic buffer assembly includes a buffer post, a guide sleeve, and a buffer cylinder. The buffer post is disposed on the base and extends vertically. The guide sleeve is sleeved on the buffer post, and elastic buffer elements are provided at both ends of the guide sleeve. The buffer cylinder is sleeved on the outside of the guide sleeve and can generate sliding friction with the guide sleeve.

[0008] A molding assembly is disposed above the base, and an elastic buffer assembly passes through the molding assembly. The molding assembly is connected to the buffer cylinder and moves elastically up and down along the buffer column.

[0009] A guide pulley assembly is disposed on the base and is higher than the molding assembly. One end of the connecting line is connected to the base, and the other end is guided by the guide pulley assembly and connected to the gravity block.

[0010] This lens forming fixture positions the mold using positioning components on the base. The molding assembly is positioned above the base and connected to the buffer cylinder of the elastic buffer assembly. Since the buffer cylinder is sleeved on the outside of the guide sleeve, sliding friction occurs between them. Furthermore, elastic buffers are provided at both ends of the guide sleeve, allowing the molding assembly to elastically rise and fall along the buffer column. The base is equipped with a guide pulley system; one end of the connecting line is connected to the base, and the other end is guided by the guide pulley system to a gravity block. When the molding assembly is pressed down, the gravity block is lifted; after pressing is completed, the force pressing down on the molding assembly is released, causing the gravity block to fall and lift the molding assembly. Simultaneously, the elastic buffers and guide sleeve provide cushioning. The gravity block of this lens forming fixture is linearly tractioned by the guide pulley system, eliminating the effects of spring fatigue. The combination of the linear traction of the elastic buffer assembly and the gravity block avoids hydraulic contamination and ensures low-temperature stability.

[0011] As a preferred embodiment of the above-mentioned lens forming fixture, the molding assembly includes:

[0012] A molded base, the elastic buffer assembly passing through the molded base, and the molded base being connected to the buffer cylinder;

[0013] A molding component is disposed at the bottom of the molding base, and the molding component is capable of pressing against the mold.

[0014] The molding base is used to connect to the buffer cylinder and also facilitates the installation of the molding components; the molding components can press against the mold to shape the lens.

[0015] As a preferred embodiment of the above-mentioned lens forming fixture, the molding component is provided with through holes on both sides; the lens forming fixture also includes two sets of guide components, which are respectively disposed on both sides of the positioning component. The guide components pass through the corresponding through holes and can guide the molding component to move up and down in the vertical direction.

[0016] The guide component guides the molding component to move up and down vertically, preventing the molding component from tilting during the upgrade.

[0017] As a preferred embodiment of the above-mentioned lens forming fixture, the guide assembly includes:

[0018] The fixing part is connected to the base;

[0019] A first guide rod extends vertically, and the bottom end of the first guide rod is connected to the fixing part. The molding assembly moves along the extension direction of the first guide rod.

[0020] The guide assembly is connected to the base via a fixing part. The first guide rod is used to guide the molding assembly to move up and down in the vertical direction. The molding assembly has a simple structure and is easy to manufacture.

[0021] As a preferred embodiment of the above-mentioned lens forming fixture, the guide assembly further includes:

[0022] The second guide rod is connected to the top end of the first guide rod and is set at an angle to the first guide rod.

[0023] The second guide rod is set at an angle to the first guide rod, and the second guide rod can prevent the guide assembly from coming out of the through hole.

[0024] As a preferred embodiment of the above-mentioned lens forming fixture, the molding assembly further includes a roller assembly, which is connected to the molding component. Each set of guide components is provided with a set of roller assemblies, and the roller assemblies are in rolling contact with the guide components.

[0025] The molding assembly contacts the guide assembly rollers through the roller assembly, which improves the guiding effect of the guide assembly on the movement of the molding assembly. Moreover, the rolling contact between the roller assembly and the guide assembly reduces the frictional resistance between them, making the lifting and lowering of the molding assembly smoother.

[0026] As a preferred embodiment of the above-mentioned lens forming fixture, operating handles are provided on both sides of the molding assembly.

[0027] The molding components can be easily operated using the handle.

[0028] In a preferred embodiment of the above-mentioned lens forming fixture, the base is provided with a support frame, and the guide pulley assembly is disposed on the support frame. The guide pulley assembly includes:

[0029] A support frame, which is disposed on the support frame;

[0030] A plurality of rollers are rotatably mounted on the support frame, and a connecting line is wound around each of the rollers and connected to the base and the gravity block.

[0031] The guide pulley system is mounted on the base via a support frame, positioning it higher than the molding assembly. The support frame provides support for the guide pulley system. The guide pulley system supports the rollers via a support frame. Several rollers are rotatably mounted on the support frame. Connecting wires are wound around each roller and connect the base and the gravity block. The guide pulley system changes the direction of the force, connecting one end of the connecting wire to the base and the other end to the gravity block.

[0032] As a preferred embodiment of the above-mentioned lens forming fixture, the outer side of the guide sleeve is provided with a plurality of protrusions, and the buffer cylinder abuts against the protrusions.

[0033] The protrusion allows for a gap between the buffer cylinder and the main body of the guide sleeve, and the protrusion abuts against the buffer cylinder, causing sliding friction between the two.

[0034] As a preferred embodiment of the above-mentioned lens forming fixture, a limiting support is provided on the base. The limiting support is located below the molding assembly and can support the molding assembly when the molding assembly is pressed into place.

[0035] Limiting the pressure of the molding assembly by using a limiting support component can prevent excessive pressure from damaging the mold.

[0036] The beneficial effects of this utility model are:

[0037] The lens forming fixture proposed in this utility model uses positioning components on the base to position the mold. The molding assembly is positioned above the base and connected to the buffer cylinder of the elastic buffer assembly. Since the buffer cylinder is sleeved on the outside of the guide sleeve, sliding friction occurs between the two. Moreover, both ends of the guide sleeve are equipped with elastic buffer components. The molding assembly uses the elastic buffer components and the sliding friction between the buffer cylinder and the guide sleeve to buffer the impact, reducing the wear on the elastic buffer components and extending their service life. Furthermore, the base is equipped with a guide pulley system. One end of the connecting line is connected to the base, and the other end is guided by the guide pulley system to connect to the gravity block. When the molding assembly is pressed down, the gravity block is lifted. After pressing is completed, the force of pressing down on the molding assembly is released, and the gravity block falls, causing the molding assembly to automatically lift up. No manual operation is required, which is more labor-saving. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the structure of the lens forming fixture provided by this utility model;

[0039] Figure 2 This is a schematic diagram showing the structure of the gravity block in the lens forming fixture provided by this utility model;

[0040] Figure 3 This is a schematic diagram of the structure of the elastic buffer assembly provided by this utility model;

[0041] Figure 4 This is a partial structural diagram of the lens forming fixture provided by this utility model;

[0042] Figure 5 This is a schematic diagram of the second partial structure of the lens forming fixture provided by this utility model;

[0043] Figure 6 This is a schematic diagram of the structure of the guide component provided by this utility model;

[0044] Figure 7 This is a schematic diagram of the third part of the lens forming fixture provided by this utility model.

[0045] In the diagram: 1. Base; 13. Limiting support; 14. Positioning and fixing block; 15. Pressure block; 2. Positioning component; 3. Elastic buffer assembly; 30. Buffer column fixing shaft; 31. Buffer column; 32. Guide sleeve; 321. Protrusion; 33. Elastic buffer component; 34. Buffer cylinder; 35. Fixing block; 4. Molding assembly; 41. Molding base; 411. Operating handle; 412. Connecting block; 42. Molding component; 421. First retainer; 4211. Through hole; 422. Molding block; 43. Roller assembly; 431. Second retainer; 432. Support seat; 433. Second roller; 5. Guide pulley group; 50. Support frame; 51. Support frame; 52. First roller; 6. Gravity block; 60. Guide rod; 7. Guide assembly; 71. Fixing part; 72. First guide rod; 73. Second guide rod; 100. Mold. Detailed Implementation

[0046] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0047] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0048] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0049] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0050] like Figure 1 and Figure 2 As shown, this embodiment provides a lens forming fixture for forming lenses. The lens forming fixture includes a base 1, an elastic buffer assembly 3, a molding assembly 4, and a guide pulley group 5. A positioning element 2 is provided on the base 1, which is used to position the mold 100; as shown Figure 3 As shown, the elastic buffer assembly 3 includes a buffer column 31, a guide sleeve 32, and a buffer cylinder 34. The buffer column 31 is disposed on the base 1 and extends vertically. The guide sleeve 32 is fitted onto the buffer column 31, and both ends of the guide sleeve 32 are provided with elastic buffer elements 33. The buffer cylinder 34 is fitted onto the outside of the guide sleeve 32 and can generate sliding friction with the guide sleeve 32. The molding assembly 4 is disposed above the base 1, and the elastic buffer assembly 3 passes through the molding assembly 4. The molding assembly 4 is connected to the buffer cylinder 34 and elastically moves up and down along the buffer column 31. The guide pulley group 5 is disposed on the base 1 and is higher than the molding assembly 4. One end of the connecting line is connected to the base 1, and the other end is guided by the guide pulley group 5 and connected to the gravity block 6. In this embodiment, two sets of elastic buffer assemblies 3 are provided, and the molding assembly 4 is buffered by the two sets of elastic buffer assemblies 3, resulting in a better buffering effect.

[0051] Because the buffer cylinder 34 is sleeved on the outside of the guide sleeve 32, sliding friction occurs between the two. Furthermore, both ends of the guide sleeve 32 are equipped with elastic buffer elements 33. The molding assembly 4 is buffered by the elastic buffer elements 33 and the sliding friction between the buffer cylinder 34 and the guide sleeve 32. This double buffering reduces the wear on the elastic buffer elements 33 and extends their service life. Additionally, the base 1 is equipped with a guide pulley group 5. One end of the connecting line is connected to the base 1, and the other end is guided by the guide pulley group 5 and connected to the gravity block 6. When the molding assembly 4 is pressed down, the gravity block 6 is lifted. After pressing is completed, the force pressing down on the molding assembly 4 is released, and the gravity block 6 falls, causing the molding assembly 4 to automatically lift. This requires no manual operation and is relatively labor-saving.

[0052] Specifically, such as Figure 4As shown, a positioning and fixing block 14 is provided on the base 1, and the positioning and fixing block 14 is installed on the base 1 by screws. The positioning element 2 is installed on the positioning and fixing block 14. In this embodiment, the positioning element 2 is detachably connected to the positioning and fixing block 14 to facilitate the replacement and disassembly of the positioning element 2. When it is necessary to position different models of molds 100, the positioning element 2 that is compatible with the mold 100 can be replaced.

[0053] Optionally, the positioning member 2 is provided with a limiting groove, and the mold 100 is limited within the limiting groove. A pressure block 15 is provided at the end of the base 1 and on the opening side of the limiting groove. The pressure block 15 is at the same height as the positioning and fixing block 14, and part of the structure of the mold 100 can be supported on the pressure block 15. The pressure block 15 can support the mold 100 during the picking and placing operation, making the picking and placing of the mold 100 more convenient. It should be noted that in other embodiments, the pressure block 15 may not be provided, and the positioning and fixing block 14 can be used for support.

[0054] Optionally, the position of the positioning element 2 is adjustable along the first direction, that is, along the length direction of the molding assembly 4. When adjusted to the correct position, the positioning element 2 is locked onto the positioning and fixing block 14 to adapt to the installation requirements of different molds 100. Specifically, the positioning element 2 is provided with an elongated hole extending along the first direction, and the fixing element passes through the elongated hole and is connected to the positioning and fixing block 14.

[0055] Optionally, such as Figure 2 As shown, a limiting support 13 is provided on the base 1. The limiting support 13 is located below the molding base 41 of the molding assembly 4. The limiting support 13 can support the molding assembly 4 when it is pressed down into place. The limiting support 13 limits the degree of pressing down of the molding assembly 4 to avoid excessive pressing down of the molding assembly 4 and damage to the mold 100.

[0056] Optionally, such as Figure 1 and Figure 2 As shown, the base 1 is provided with a support frame 50, and a guide pulley assembly 5 is disposed on the support frame 50. The guide pulley assembly 5 includes a support frame 51 and first rollers 52. The support frame 51 is disposed on the support frame 50 and supports the guide pulley assembly 5, making the height of the guide pulley assembly 5 higher than that of the molding component 4. Several first rollers 52 are rotatably disposed on the support frame 51. When two or more first rollers 52 are provided, they are arranged sequentially along a first direction. In this embodiment, two first rollers 52 are provided, and the two first rollers 52 are arranged sequentially along the first direction. A connecting line is sequentially wound around the two first rollers 52, and one end of the connecting line is connected to the connecting block 412 on the base 1, and the other end is connected to the gravity block 6. The direction of force is changed by the guide pulley assembly 5, so that one end of the connecting line is connected to the base 1 and the other end is connected to the gravity block 6.

[0057] Optionally, the gravity block 6 is set inside the support frame 50. The support frame 50 not only protects the gravity block 6, but also prevents the operator from being injured in case of abnormal situations such as the breakage of the connecting wires connected to the gravity block 6, thus protecting the operator.

[0058] Optionally, a guide rod 60 is provided on the base 1, which extends vertically. A through hole is provided on the gravity block 6, and the gravity block 6 is sleeved on the guide rod 60 through the through hole. The gravity block 6 is movably disposed on the guide rod 60 in the vertical direction. The guide rod 60 guides the movement of the gravity block 6 to prevent the movement of the gravity block 6 from being skewed.

[0059] In this embodiment, two sets of guide rods 60 are provided, which are parallel and spaced apart. Two through holes are provided on the gravity block 6. The gravity block 6 is movably mounted on the two sets of guide rods 60. The two sets of guide rods 60 provide better guidance for the movement of the gravity block 6.

[0060] Optionally, such as Figure 2 As shown, the molding assembly 4 includes a molding base 41 and a molding component 42. The molding base 41 has two mounting through holes arranged sequentially along a first direction. Each mounting through hole contains a set of elastic buffer components 3, which pass through the mounting through holes and are installed in the molding base 41. The molding base 41 is connected to a buffer cylinder 34. Operating handles 411 are provided on both sides of the molding base 41, facilitating the pressing operation of the molding assembly 4. The molding component 42 is located at the bottom of the molding base 41 and can press against the mold 100. The molding base 41 is used to connect to the buffer cylinder 34 and also facilitates the installation of the molding component 42; the molding component 42 can press against the mold 100 to mold the lens.

[0061] Furthermore, such as Figure 4 and Figure 5 As shown, the molding component 42 includes a first retainer 421, on which a mounting hole is provided, and a molding block 422 is provided in the mounting hole. The molding block 422 is connected to the molding base 41 and presses against the mold 100 through the molding block 422.

[0062] Optionally, such as Figure 5 As shown, the first retainer 421 has through holes 4211 on both sides; the lens forming fixture also includes two sets of guide components 7, which are respectively disposed on both sides of the positioning member 2. The guide components 7 pass through the corresponding through holes 4211 and can guide the molding component 4 to rise and fall in the vertical direction, so as to avoid the molding component 4 from tilting during rise and fall.

[0063] like Figure 6As shown, the guide assembly 7 includes a fixing part 71, a first guide rod 72, and a second guide rod 73. The fixing part 71 is connected to the base 1 via a fastener. The first guide rod 72 extends vertically, and its bottom end is connected to the fixing part 71. The molding assembly 4 moves along the extension direction of the first guide rod 72. The second guide rod 73 is connected to the top end of the first guide rod 72 and is set at an angle to the first guide rod 72. The guide assembly 7 is connected to the base 1 via the fixing part 71. The first guide rod 72 guides the molding assembly 4 to move up and down vertically. The second guide rod 73 is set at an angle to the first guide rod 72, and the second guide rod 73 prevents the guide assembly 7 from coming out of the through hole 4211.

[0064] Optionally, such as Figure 7 As shown, the molding assembly 4 also includes a roller assembly 43, which is connected to the molding component 42. Each set of guide components 7 is provided with a set of roller assemblies 43. The roller assembly 43 and the guide component 7 make rolling contact, reducing the frictional resistance between them and making the lifting and lowering of the molding assembly 4 smoother.

[0065] Specifically, the two sets of roller assemblies 43 are mounted on the first retainer 421 via the second retainer 431, and the two sets of roller assemblies 43 are located at the same horizontal height. The roller assembly 43 includes a support base 432 and a second roller 433. The support base 432 is mounted on the second retainer 431, and the second roller 433 is rotatably disposed on the support base 432. The second roller 433 can roll contact with the first guide rod 72 of the guide assembly 7.

[0066] Optionally, such as Figure 3 As shown, the elastic buffer assembly 3 is detachably connected to the base 1. Specifically, the elastic buffer assembly 3 also includes a buffer post fixing shaft 30. The bottom end of the buffer post 31 is installed in the mounting hole of the base 1. The buffer post fixing shaft 30 extends from the bottom of the base 1 into the mounting hole of the base 1 and abuts against the buffer post 31. It is connected to the buffer post 31 by a fastener passing through the buffer post fixing shaft 30. In this embodiment, the fastener is a screw.

[0067] Optionally, the elastic buffer members 33 located at the upper and lower ends of the guide sleeve 32 are springs, which are sleeved on the buffer post 31 and abut against the end of the buffer post 31 and the guide sleeve 32. The buffer cylinder 34 is sleeved on the outside of the guide sleeve 32 and fixed to the base 1 by the fixing block 35.

[0068] Optionally, the outer side of the guide sleeve 32 is provided with a plurality of protrusions 321, and the buffer cylinder 34 can generate sliding friction with the protrusions 321. The protrusions 321 allow for a gap between the buffer cylinder 34 and the main body of the guide sleeve 32, and the protrusions 321 abut against the buffer cylinder 34, generating sliding friction between them. Furthermore, lubricating oil, such as silicone oil, is applied between the guide sleeve 32 and the buffer cylinder 34 to provide lubrication.

[0069] During assembly, the positioning and fixing block 14, the pressure block 15, the guide component 7, the guide rod 60, and the limiting support component 13 are fixed to the base 1 with screws. The buffer column 31 of the elastic buffer component 3 is placed into the mounting hole of the base 1, and the buffer column fixing shaft 30 is also installed in the mounting hole. Then, the buffer column 31 and the buffer column fixing shaft 30 are locked with screws.

[0070] Lock the positioning element 2 onto the positioning fixing block 14, then lock the molding block 422 and the first retainer 421 onto the molding base 41. At this time, the molding base 41 is facing down, the two middle mounting holes on the molding base 41 are aligned with the buffer post 31, and the through holes 4211 on the left and right sides of the first retainer 421 are aligned with the guide assembly 7. At the same time, the roller assembly 43 is locked onto both sides of the first retainer 421 through the second retainer 431.

[0071] The operating handles 411 are assembled on the left and right sides of the molding base 41. The elastic buffer 33 and the guide sleeve 32 are then fitted onto the buffer column 31 in sequence. Finally, the buffer cylinder 34 is fitted onto the outside of the guide sleeve 32. Silicone oil is applied between the buffer cylinder 34 and the guide sleeve 32 to provide lubrication for friction and shock absorption. The buffer cylinder 34 is then fixed to the molding base 41 with screws using three fixing blocks 35.

[0072] Insert the guide rod 60 into the two through holes on the gravity block 6 and place it above the base 1. Lock the support frame 50 around the gravity block 6, then lock the support frame 51 above the support frame 50. Use screws to lock the first roller 52 in the middle of the support frame 51. Install the connecting block 412 on the molding base 41. Finally, tie the connecting wire to the connecting block 412. The connecting wire passes through the two first rollers 52 and connects to the gravity block 6. The assembly of this device is complete.

[0073] In use, first lift the molding component 4, place the mold 100 into the positioning part 2 for limiting, adjust the position back and forth and lock the positioning part 2, hold the operating handle 411 and press the molding component 4 down. At the same time, the downward force will lift the gravity block 6. After pressing is completed, release the operating handle 411. The gravity block 6 falls and causes the molding component 4 to bounce up. At the same time, the elastic buffer 33 and the guide sleeve 32 will play a buffering role.

[0074] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A lens forming fixture, characterized in that, include: A base (1) is provided with a positioning element (2), which is used to position the mold (100); The elastic buffer assembly (3) includes a buffer post (31), a guide sleeve (32) and a buffer cylinder (34). The buffer post (31) is disposed on the base (1) and extends in the vertical direction. The guide sleeve (32) is sleeved on the buffer post (31), and elastic buffer elements (33) are provided at both ends of the guide sleeve (32). The buffer cylinder (34) is sleeved on the outside of the guide sleeve (32) and can generate sliding friction with the guide sleeve (32). A molding assembly (4) is disposed above the base (1), and an elastic buffer assembly (3) is inserted through the molding assembly (4). The molding assembly (4) is connected to the buffer cylinder (34) and moves up and down elastically along the buffer column (31). The guide pulley assembly (5) is set on the base (1) and is higher than the molding assembly (4). One end of the connecting line is connected to the base (1), and the other end is guided by the guide pulley assembly (5) and connected to the gravity block (6).

2. The lens forming fixture according to claim 1, characterized in that, The molding assembly (4) includes: A molded base (41) is provided, and the elastic buffer assembly (3) is provided through the molded base (41). The molded base (41) is connected to the buffer cylinder (34). A molding component (42) is disposed at the bottom of the molding base (41), and the molding component (42) is capable of pressing against the mold (100).

3. The lens forming fixture according to claim 2, characterized in that, Both sides of the molding component (42) are provided with through holes (4211); the lens forming fixture also includes two sets of guide components (7), the two sets of guide components (7) are respectively provided on both sides of the positioning component (2), the guide components (7) are inserted through the corresponding through holes (4211), and can guide the molding component (4) to rise and fall in the vertical direction.

4. The lens forming fixture according to claim 3, characterized in that, The guiding component (7) includes: A fixing part (71) is connected to the base (1); The first guide rod (72) extends vertically and its bottom end is connected to the fixing part (71). The molding assembly (4) moves along the extension direction of the first guide rod (72).

5. The lens forming fixture according to claim 4, characterized in that, The guide assembly (7) further includes a second guide rod (73), which is connected to the top end of the first guide rod (72) and is set at an angle to the first guide rod (72).

6. The lens forming fixture according to claim 4, characterized in that, The molding assembly (4) further includes a roller assembly (43), which is connected to the molding component (42). Each set of guide components (7) is provided with a set of roller assemblies (43), and the roller assembly (43) is in rolling contact with the guide component (7).

7. The lens forming fixture according to any one of claims 1-6, characterized in that, Both sides of the molding assembly (4) are provided with operating handles (411).

8. The lens forming fixture according to any one of claims 1-6, characterized in that, The base (1) is provided with a support frame (12), and the guide pulley assembly (5) is provided on the support frame (12). The guide pulley assembly (5) includes: A support frame (51) is disposed on the support frame (12); The first roller (52) and several first rollers (52) are rotatably mounted on the support frame (51). The connecting line is wound around each first roller (52) and connected to the base (1) and the gravity block (6).

9. The lens forming fixture according to any one of claims 1-6, characterized in that, The outer side of the guide sleeve (32) is provided with a plurality of protrusions (321), and the buffer cylinder (34) abuts against the protrusions (321).

10. The lens forming fixture according to any one of claims 1-6, characterized in that, The base (1) is provided with a limiting support (13), which is located below the molding assembly (4) and can support the molding assembly (4) when the molding assembly (4) is pressed into place.

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