Lens grinding machine for glasses manufacturing

Abstract

The utility model belongs to the technical field of glasses manufacturing, and particularly relates to a lens grinding machine for glasses manufacturing. The lens grinding machine for manufacturing the glasses comprises a shell, a water valve and the like, a water storage area of a rectangular structure is arranged in the shell, the water valve is arranged at the front position of the right portion of the shell, and a water inlet pipe of the water valve penetrates through the outer portion of the shell and is directly communicated with the water storage area of the shell. And the lowest part of the water inlet pipe and the lowest part of the water storage area are kept on the same horizontal plane. Through the design of the positioning and polishing assembly, when a to-be-polished lens body is placed, the arc-shaped side edge of the lens body can be blocked by the arc-shaped side edge of a positioning semi-ring, an operator is assisted in rapidly and accurately placing the lens body, and it is ensured that the lens body and two pressing plates are in a concentric state after the lens body is pressed; by means of the design, the placing accuracy and efficiency are effectively improved, it is ensured that all lens bodies can obtain the consistent machining quality, and errors and inconsistency caused by direct placing are avoided.

Description

Technical Field

[0001] This utility model belongs to the field of eyeglass manufacturing technology, and in particular relates to a lens polishing machine for eyeglass manufacturing. Background Technology

[0002] Eyeglasses are optical devices used to correct vision problems or protect the eyes, typically consisting of lenses and frames. Lens polishing is a crucial step in the manufacturing process; through precise polishing techniques, lenses not only provide excellent visual effects but also ensure the wearer's comfort and safety.

[0003] Patent CN221248121U discloses a spectacle lens grinding device, including a support frame with a connecting base box fixedly connected to its inner side and a rotating rod rotatably connected inside the support frame. Although the patent uses a first lens clamping plate and a second lens clamping plate to clamp and fix the spectacle lenses to be ground, in actual operation, the spectacle lenses are directly placed on the second lens clamping plate by the operator. This method of placing the spectacle lenses is prone to large errors, making it difficult to achieve high precision requirements, ensuring consistency, and increasing the scrap rate and the risk of rework.

[0004] Therefore, it is necessary to design a lens polishing machine for eyeglass manufacturing to solve the above-mentioned technical problems. Utility Model Content

[0005] In order to overcome the shortcomings of existing patents that directly place lenses, which easily leads to large errors, low precision, poor consistency, and increased scrap rate and rework risk, this utility model provides a lens grinding machine for eyeglass manufacturing.

[0006] This utility model is achieved through the following technical means: A lens grinding machine for eyeglass manufacturing includes a housing, a water valve, a first support frame, a servo motor, a pressure block, a cylinder, a positioning and grinding assembly, a slide cylinder, and a return spring. The housing contains a rectangular water storage area. The water valve is located on the right-forward side of the housing, with its inlet pipe passing through the outside of the housing and directly connected to the water storage area. The lowest point of the inlet pipe is at the same level as the lowest point of the water storage area. The water valve's outlet pipe is designed with an L-shaped structure, with the inlet facing left and the outlet facing downwards. An inclined guide plate is present inside the water storage area. The plate slopes downwards from the left to the right, forming a slope that is higher on the left and lower on the right. The first support frame and the servo motor are both installed at the bottom of the housing. The output shaft of the servo motor faces upwards. A pressure block is fixed to the output shaft of the servo motor by means of axial alignment. The cylinder is embedded in the upper part of the first support frame, with its telescopic rod facing downwards. The positioning and grinding components are set between the cylinder and the first support frame. The slide cylinder is slidably connected to the telescopic rod of the cylinder. Another pressure block of the same size as the pressure block is rotatably connected to the lower part of the slide cylinder, and the two pressure blocks are in an opposing state. The return spring is fixed between the other pressure block and the telescopic rod of the cylinder.

[0007] Furthermore, particularly preferably, the positioning and grinding assembly includes a first connecting plate, a rotating plate, a grinding block, a positioning half-ring, a guide frame, a limiting ring, and a second connecting plate. Two first connecting plates of different sizes are distributed vertically, fixed to the telescopic rod of the cylinder, and located above the slide cylinder. The smaller first connecting plate is positioned below the larger first connecting plate. Four rotating plates of different sizes are arranged in pairs, with adjacent plates of the same size forming a group, rotatably connected to the corresponding first connecting plate. The grinding block is rotatably connected between the rotating plates of the group with the larger first connecting plate. The ring is rotatably connected between another set of rotating plates on the smaller first connecting plate. Two guide frames of different sizes are distributed vertically and fixed to the first support frame. The grinding block is slidably connected to the larger guide frame, and the positioning half ring is slidably connected to the smaller guide frame. The second connecting plate is fixed to the telescopic rod of the cylinder and is located above the two first connecting plates. Five limiting rings of different thicknesses are vertically distributed and fixed to the telescopic rod of the cylinder, forming a multi-point support structure and contacting the two first connecting plates and a single second connecting plate respectively. The lowest limiting ring is located above the slide cylinder.

[0008] Furthermore, preferably, it also includes a water pump, an inlet pipe, a delivery pipe, a water tank, a second support frame, a connecting pipe, and a nozzle. The water pump is installed at the rear left side of the housing. The inlet pipe is fixed to the front of the water pump, with its inlet end facing left and its outlet end facing rear, communicating with the inlet end of the water pump. The delivery pipe is fixed to the rear of the water pump, with its outlet end facing upward and its inlet end facing forward, communicating with the outlet end of the water pump. The second support frame is fixed to the left side of the housing, and the water tank is fixed to the upper part of the second support frame. The upward-facing outlet end of the delivery pipe is connected to the inlet end of the water tank. The connecting pipe is fixed to the outlet end of the water tank. The nozzle is fixed to the downward-facing outlet end of the connecting pipe, with its spray end facing the upward pressure block.

[0009] Furthermore, it is particularly preferred that the device also includes a cover plate and a handle, the cover plate being attached to the upper part of the water tank with its bottom end contacting the top of the water tank, and the handle being fixed to the center point of the top of the cover plate.

[0010] Furthermore, it is particularly preferred that the device also includes a rack, a gear, a connecting rod, and a stop block. The stop block is rotatably connected to the inside of the water outlet of the water tank and is made of polyurethane. The connecting rod is fixed to the stop block and passes through the water outlet of the water tank, located outside the water tank. The gear is fixed to the end of the connecting rod away from the water outlet of the water tank. The rack is fixed to the end of the second connecting plate away from the cylinder telescopic rod and meshes with the gear. The rack and the gear have the same thickness.

[0011] Furthermore, it is particularly preferred that the device also includes a protective cover, the hollow protective cover being fixed to the bottom of the housing and completely covering the servo motor, and the protective cover being made of stainless steel.

[0012] Based on the above description of the structure of this utility model, the design starting point, concept, and advantages of this utility model are as follows:

[0013] Through the design of the positioning and polishing components, when placing the lens body to be polished, the curved side of the lens body can be blocked by the curved side of the positioning semi-ring, which helps the operator to quickly and accurately place the lens body. This ensures that the lens body is concentric with the two pressure plates after being pressed down. This design effectively improves the accuracy and efficiency of placement, ensures that each lens body can obtain consistent processing quality, and avoids errors and inconsistencies caused by direct placement.

[0014] Through the combined design of water pump, inlet pipe, delivery pipe, water tank, connecting pipe and nozzle, the coolant can be accurately sprayed onto the side of the lens body being polished, effectively reducing the temperature during the polishing process and preventing the lens body from overheating and deforming. At the same time, the coolant can also lubricate the polishing area, reduce friction and extend the service life of the polishing block.

[0015] Through the meshing of gears and racks, the switching action of the stop block can be synchronized with the extension and retraction of the cylinder telescopic rod, ensuring that the water outlet of the water tank opens or closes at the appropriate time, avoiding waste or overflow of coolant. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a partial sectional view of the shell and water tank components of this utility model.

[0018] Figure 3 This utility model Figure 2 Enlarged diagram of point A in the middle.

[0019] Figure 4 This is a partial sectional view of the first connecting plate, guide frame, slide cylinder and protective cover components of this utility model.

[0020] The above-mentioned figures include the following reference numerals: 1. Housing, 2. Water valve, 3. First support frame, 4. Servo motor, 5. Lens body, 6. Pressure block, 7. Cylinder, 8. First connecting plate, 9. Rotating plate, 10. Grinding block, 11. Positioning half ring, 12. Guide frame, 13. Water pump, 14. Water inlet pipe, 15. Water delivery pipe, 16. Water tank, 161. Second support frame, 17. Cover plate, 18. Handle, 19. Connecting pipe, 20. Nozzle, 21. Limiting ring, 22. Second connecting plate, 23. Slide cylinder, 24. Return spring, 25. Protective cover, 26. Rack, 27. Gear, 28. Connecting rod, 29. Stop block. 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] Example: A lens polishing machine for eyeglass manufacturing, such as Figures 1-4As shown, the assembly includes a housing 1, a water valve 2, a first support frame 3, a servo motor 4, a pressure block 6, a cylinder 7, a positioning and grinding assembly, a slide cylinder 23, a return spring 24, and a protective cover 25. The housing 1 contains a rectangular water storage area. The water valve 2 is located slightly forward and to the right of the housing 1. Its inlet pipe passes through the outside of the housing 1 and is directly connected to the water storage area. The lowest point of the inlet pipe is at the same level as the lowest point of the water storage area to ensure consistent water levels and prevent water accumulation or poor drainage. The outlet of the water valve 2... The water pipe is designed in an L-shape, with the inlet facing left and the outlet facing down, allowing the coolant to flow in horizontally and out vertically, facilitating smooth coolant discharge. The water storage area contains a sloping guide plate, its slope descending from left to right, creating a left-high, right-low gradient that allows the coolant to flow naturally along the slope. The first support frame 3 and the servo motor 4 are both bolted to the bottom of the housing 1, with the output shaft of the servo motor 4 facing upwards. A pressure block 6... The servo motor 4 is connected to the output shaft via a keyway, with their rotation center lines completely overlapping to ensure stability and accuracy during rotation. The cylinder 7 is bolted to the upper part of the first support frame 3, with its telescopic rod pointing downwards. The positioning and grinding components are located between the cylinder 7 and the first support frame 3. The slide cylinder 23 is slidably connected to the telescopic rod of the cylinder 7. Another pressure block 6, the same size as one pressure block 6, is rotatably connected to the lower part of the slide cylinder 23, and the two pressure blocks 6 are in an opposing state, capable of pressing the front and back sides of the lens body 5 respectively. The return spring 24 is welded between the other pressure block 6 and the telescopic rod of the cylinder 7 to provide a buffering effect and prevent the other pressure block 6 from directly crushing the lens body 5. The hollow protective cover 25 is welded to the bottom of the housing 1 and completely covers the servo motor 4, forming a protective zone in the water storage area of ​​the housing 1 to protect the servo motor 4 from being immersed in coolant. The protective cover 25 is made of stainless steel, which has good corrosion resistance and is suitable for use when immersed in coolant.

[0023] like Figure 1 , Figure 2 and Figure 4As shown, the positioning and grinding assembly includes a first connecting plate 8, a rotating plate 9, a grinding block 10, a positioning half-ring 11, a guide frame 12, a limiting ring 21, and a second connecting plate 22. Two first connecting plates 8 of different sizes are distributed vertically and connected to the telescopic rod of the cylinder 7 by welding, and are located above the slide cylinder 23. The smaller first connecting plate 8 is located below the larger first connecting plate 8. The four rotating plates 9 are of different sizes, and each pair of adjacent rotating plates 9 of the same size forms a group, which are rotatably connected to the corresponding first connecting plate 8. The grinding block 10 is rotatably connected between a set of rotating plates 9 of the larger first connecting plate 8, and the positioning half-ring 11 is rotatably connected between another set of rotating plates 9 of the smaller first connecting plate 8. Two guide frames 12 of different sizes are distributed vertically and connected to the first support frame 3 by welding. The grinding block 10 is slidably connected to the larger guide frame 12, and the positioning half-ring 11 is slidably connected to the smaller guide frame 12. The second connecting plate 22 is connected to the telescopic rod of the cylinder 7 by welding and is located above the two first connecting plates 8. Five limiting rings 21 of varying thicknesses are vertically distributed and welded to the telescopic rod of the cylinder 7, forming a multi-point support structure. Each ring contacts one of the two first connecting plates 8 and one of the second connecting plates 22, maintaining a proper distance between them. The specific contact details are as follows (from top to bottom): the bottom of the first limiting ring 21 contacts the top of the second connecting plate 22; the top of the second limiting ring 21 contacts the bottom of the second connecting plate 22; and the bottom of the third limiting ring 21 contacts the first connecting plate 22. The top of the connecting plate 8 has a smaller contact size with the top of the fourth limiting ring 21 than the bottom of the first connecting plate 8, and the bottom of the fourth limiting ring 21 has a larger contact size with the top of the first connecting plate 8. The top of the fifth limiting ring 21 also has a larger contact size with the bottom of the first connecting plate 8. Through the multi-point support structure of the five limiting rings 21, the stability of the two first connecting plates 8 and the single second connecting plate 22 is enhanced. The fifth limiting ring 21 is located above the slide cylinder 23, so that when the slide cylinder 23 moves upward along the telescopic rod of the cylinder 7, it can be stopped by the fifth limiting ring 21.

[0024] like Figures 1-3As shown, it also includes a water pump 13, an inlet pipe 14, a delivery pipe 15, a water tank 16, a second support frame 161, a connecting pipe 19, and a nozzle 20. The water pump 13 is bolted to the rear left side of the housing 1. The inlet pipe 14 is welded to the front of the water pump 13, with its inlet end facing left and its outlet end facing rear, communicating with the inlet end of the water pump 13. The delivery pipe 15 is welded to the rear of the water pump 13, with its outlet end facing upward and its inlet end facing forward, communicating with the outlet end of the water pump 13. The water end is connected, the second support frame 161 is connected to the left side of the shell 1 by welding, the water tank 16 is connected to the upper part of the second support frame 161 by welding, the water outlet end of the water supply pipe 15 is connected to the water inlet end of the water tank 16, the connecting pipe 19 is connected to the water outlet end of the water tank 16 by welding, and the nozzle 20 is connected to the water outlet end of the connecting pipe 19 by welding, with its spray end facing the upper pressure block 6, so that the nozzle 20 can accurately spray the coolant onto the lens body 5.

[0025] like Figure 1 As shown, it also includes a cover plate 17 and a handle 18. The cover plate 17 is attached to the upper part of the water tank 16, and its bottom end is in contact with the top end of the water tank 16, so that the cover plate 17 is limited to a suitable position on the upper part of the water tank 16. The handle 18 is attached to the center point of the top of the cover plate 17 by adhesive, so that the cover plate 17 can be pulled out when needed.

[0026] like Figure 3 As shown, it also includes a rack 26, a gear 27, a connecting rod 28, and a stop block 29. The stop block 29 is rotatably connected to the inside of the water outlet of the water tank 16 and is made of polyurethane, which has excellent wear resistance and can maintain a good sealing effect. The connecting rod 28 is connected to the stop block 29 by welding and passes through the water outlet of the water tank 16, located outside the water tank 16. The gear 27 is connected to the end of the connecting rod 28 away from the water outlet of the water tank 16 by welding. The rack 26 is connected to the end of the second connecting plate 22 away from the telescopic rod of the cylinder 7 by welding and meshes with the gear 27. The rack 26 and the gear 27 have the same thickness, which can achieve uniform load distribution and reduce the risk of wear and damage.

[0027] Initially, the water tank 16 is empty of coolant, the extension rod of cylinder 7 is extended, the upper pressure block 6 is close to the lower pressure block 6, the return spring 24 is compressed, and the stop block 29 is vertical. With the water tank 16 fully open, the operator first connects the coolant delivery pipe to the inlet pipe 14, then starts cylinder 7 to retract its extension rod, causing the two first connecting plates 8 and the single second connecting plate 22 to move upwards. As the two first connecting plates 8 move upwards, they pull two sets of rotating plates 9 to rotate. One set of rotating plates 9 pulls the grinding block 10 outwards, away from the two pressure blocks 6, while the other set of rotating plates 9 pushes the positioning half-ring 11 inwards, closer to the two pressure blocks 6. As the single second connecting plate 22 moves upwards, it causes the rack 26 to move upwards and... Gear 27 engages in the forward direction, causing gear 27 to drive connecting rod 28 to rotate counterclockwise. Connecting rod 28 then drives stop block 29 to rotate counterclockwise towards a horizontal position, gradually closing the water outlet of water tank 16. Simultaneously, the extension rod of cylinder 7 drives slide cylinder 23 to move upward, moving upper pressure block 6 away from lower pressure block 6. Return spring 24 then returns to its original state, causing upper pressure block 6 to drive slide cylinder 23 to move downward and reset. When the extension rod of cylinder 7 retracts, stop block 29 has rotated 90 degrees counterclockwise and is in a horizontal position, completely closing the water outlet of water tank 16. Then, the lens body 5 to be polished is placed on the lower pressure plate. During placement, the arc-shaped side of lens body 5 is blocked from contacting the arc-shaped side of positioning semi-ring 11, thus assisting the operator in placing it quickly and accurately. After the lens body 5 is placed, the extension rod of the control cylinder 7 extends, causing the two first connecting plates 8 and the single second connecting plate 22 to move downwards. When the two first connecting plates 8 move downwards, they pull the two sets of rotating plates 9 to reverse. One set of rotating plates 9 pushes the grinding block 10 inwards, close to the two pressure blocks 6, and contacts the side of the lens body 5 to be ground. The other set of rotating plates 9 pulls the positioning half ring 11 outwards, away from the two pressure blocks 6, to prevent the positioning half ring 11 from continuing to contact the lens body 5 and affecting its grinding. When the single second connecting plate 22 moves downwards, it causes the rack 26 to move downwards and mesh with the gear 27 in the opposite direction, causing the gear 27 to drive the connecting rod 28 to rotate clockwise. The connecting rod 28 drives the stop block 29 to rotate clockwise and tend to a vertical state, gradually opening the water. At the water outlet of tank 16, the telescopic rod of cylinder 7 simultaneously drives the slide cylinder 23 downward, bringing the upper pressure block 6 closer to the lower pressure block 6 and cooperating with it to press the lens body 5 from above and below. When the upper pressure block 6 presses the lens body 5, it is first squeezed by the lens body 5, causing the slide cylinder 23 to move slightly upward. The return spring 24 is compressed, which plays a buffering role, preventing the upper pressure block 6 from directly damaging the lens body 5 and ensuring the integrity of the lens body 5. When the slide cylinder 23 moves to the appropriate position, it is stopped by the fifth limit ring 21, stopping its upward movement. After the telescopic rod of cylinder 7 extends, the stop block 29 rotates 90 degrees clockwise and is in a vertical state, fully opening the water outlet of water tank 16. At this time, the servo motor 4 and water pump 13 are started. When the servo motor 4 runs...Its output shaft drives the lower pressure block 6 to rotate clockwise. The lower pressure block 6 cooperates with the upper pressure block 6 to drive the lens body 5 to rotate clockwise, causing the lens body 5 to rotate at high speed and generate friction between it and the polishing block 10, thus starting the polishing operation. During polishing, the water pump 13 runs, drawing away the coolant flowing into the inlet pipe 14 and sending the coolant into the delivery pipe 15. The coolant in the delivery pipe 15 then flows into the water tank 16, and the coolant in the water tank 16 then flows into the connecting pipe 19, and finally sprays it from the nozzle 20 onto the side of the lens body 5 that is being polished, serving a cooling and lubricating function. The used coolant flows into the water storage area of ​​the housing 1 for centralized collection. After polishing is completed, the servo motor 4 and the water pump 13 are turned off. Finally, the above steps are repeated to move the upper pressure block 6 away from the lower pressure block 6, so that the stop block 29 completely closes the water outlet of the water tank 16, and the polished lens body 5 can be removed.

[0028] It should be noted that when the coolant level in the water storage area is about to approach the lower pressure block 6, open the water valve 2 to allow the coolant in the water storage area to be discharged from the water valve 2, so as to facilitate the centralized discharge and recovery of the coolant. After the discharge is complete, close the water valve 2.

[0029] Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that various changes or modifications can be made to the present invention without departing from the principles and spirit of the present invention as defined by the claims. Therefore, the detailed description of the embodiments in this disclosure is for explanation only and not for limiting the present invention, but rather the scope of protection is defined by the content of the claims.

Claims

1. A lens polishing machine for eyeglass manufacturing, characterized in that: The system includes a housing (1), a water valve (2), a first support frame (3), a servo motor (4), a pressure block (6), a cylinder (7), a positioning and grinding assembly, a slide cylinder (23), and a return spring (24). The housing (1) contains a rectangular water storage area. The water valve (2) is located on the right front of the housing (1). Its inlet pipe passes through the outside of the housing (1) and is directly connected to the water storage area of ​​the housing (1). The lowest point of the inlet pipe is at the same level as the lowest point of the water storage area. The outlet pipe of the water valve (2) is designed as an L-shaped structure. The inlet end of the outlet pipe faces left and the outlet end faces down. The water storage area contains an inclined guide plate. The inclined surface of the guide plate slopes down from the left to the right, forming a left-high and right-low structure. The slope, the first support frame (3) and the servo motor (4) are both installed at the bottom of the housing (1), the output shaft of the servo motor (4) faces upward, a pressure block (6) is fixed to the output shaft of the servo motor (4) by means of shaft centering, the cylinder (7) is embedded in the upper part of the first support frame (3), its telescopic rod faces downward, the positioning and grinding components are set between the cylinder (7) and the first support frame (3), the slide cylinder (23) is slidably connected to the telescopic rod of the cylinder (7), another pressure block (6) with the same size as one pressure block (6) is rotatably connected to the lower part of the slide cylinder (23), and the two pressure blocks (6) are in a state of opposition, the return spring (24) is fixed between the other pressure block (6) and the telescopic rod of the cylinder (7).

2. A lens polishing machine for eyeglass manufacturing according to claim 1, characterized in that: The positioning and grinding assembly includes a first connecting plate (8), a rotating plate (9), a grinding block (10), a positioning half-ring (11), a guide frame (12), a limiting ring (21), and a second connecting plate (22). Two first connecting plates (8) of different sizes are distributed vertically and fixed to the telescopic rod of the cylinder (7) and located above the slide cylinder (23). The smaller first connecting plate (8) is located below the larger first connecting plate (8). The four rotating plates (9) are of different sizes. Each pair of adjacent rotating plates (9) of the same size forms a group and is rotatably connected to the corresponding first connecting plate (8). The grinding block (10) is rotatably connected between the group of rotating plates (9) with the larger first connecting plate (8). The positioning half-ring (11) rotates... The first connecting plate (8) is connected to another set of rotating plates (9) with a smaller size. Two guide frames (12) of different sizes are distributed vertically and fixed to the first support frame (3). The grinding block (10) is slidably connected to the guide frame (12) with a larger size. The positioning half ring (11) is slidably connected to the guide frame (12) with a smaller size. The second connecting plate (22) is fixed to the telescopic rod of the cylinder (7) and located above the two first connecting plates (8). Five limiting rings (21) of different thicknesses are vertically distributed and fixed to the telescopic rod of the cylinder (7) to form a multi-point support structure. They respectively contact the two first connecting plates (8) and the limiting ring (21) at the bottom of the single second connecting plate (22) located above the slide cylinder (23).

3. A lens polishing machine for eyeglass manufacturing according to claim 2, characterized in that: It also includes a water pump (13), an inlet pipe (14), a delivery pipe (15), a water tank (16), a second support frame (161), a connecting pipe (19), and a nozzle (20). The water pump (13) is installed at the rear left side of the housing (1). The inlet pipe (14) is fixed to the front of the water pump (13), with its inlet end facing left and its outlet end facing rear, communicating with the inlet end of the water pump (13). The delivery pipe (15) is fixed to the rear of the water pump (13), with its outlet end facing left. The upper part of the water inlet faces forward and is connected to the water outlet of the water pump (13). The second support frame (161) is fixed to the left side of the housing (1). The water tank (16) is fixed to the upper part of the second support frame (161). The water outlet of the water pipe (15) facing upward is connected to the water inlet of the water tank (16). The connecting pipe (19) is fixed to the water outlet of the water tank (16). The nozzle (20) is fixed to the water outlet of the connecting pipe (19) facing downward, and its spray end faces the upper pressure block (6).

4. A lens polishing machine for eyeglass manufacturing according to claim 3, characterized in that: It also includes a cover plate (17) and a handle (18). The cover plate (17) is attached to the upper part of the water tank (16), and its bottom end is in contact with the top of the water tank (16). The handle (18) is fixed to the center point of the top of the cover plate (17).

5. A lens polishing machine for eyeglass manufacturing according to claim 4, characterized in that: It also includes a rack (26), a gear (27), a connecting rod (28), and a stop (29). The stop (29) is rotatably connected to the inside of the water outlet of the water tank (16) and is made of polyurethane. The connecting rod (28) is fixed to the stop (29) and passes through the water outlet of the water tank (16) and is located outside the water tank (16). The gear (27) is fixed to the end of the connecting rod (28) away from the water outlet of the water tank (16). The rack (26) is fixed to the end of the second connecting plate (22) away from the telescopic rod of the cylinder (7) and meshes with the gear (27). The rack (26) and the gear (27) have the same thickness.

6. A lens polishing machine for eyeglass manufacturing according to claim 5, characterized in that: It also includes a protective cover (25), which is hollow and fixed to the bottom of the housing (1) and completely covers the servo motor (4). The protective cover (25) is made of stainless steel.

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