A water-proof direct-drive type grinding wheel driving mechanism for grinding edge of glasses lens

Abstract

A water-resistant direct-drive grinding wheel drive mechanism for an eyeglass lens edging machine is disclosed. This invention relates to the field of eyeglass lens processing equipment technology, and particularly to an improvement of a water-resistant direct-drive grinding wheel drive mechanism for an edging machine. It includes a housing cavity, a motor, a grinding wheel mechanism, and a sealing block. The housing cavity has a through hole through which the motor's output shaft passes, connecting to the grinding wheel mechanism inside the housing cavity. A sealing block is located inside the through hole. Drainage grooves are provided on the lower parts of both the inner and outer sides of the through hole. A circular recessed groove is provided on the outer periphery of the through hole, with a boss on the inner side of the groove. The top surface of the boss is lower than the inner surface of the housing cavity. The sealing block has a central hole-shaped structure with a through-hole inside. A cover groove is provided on one end face of the sealing block, which covers the through hole. The cover groove corresponds to the boss on the outer side of the through hole. The motor's output shaft passes through the through-hole. Through multi-layered physical guidance and barriers, this mechanism significantly improves waterproofing, protects the motor, extends equipment life, and effectively avoids environmental pollution.

Description

Technical Field

[0001] This utility model relates to the field of spectacle lens processing equipment technology, and in particular to an improvement of a direct-drive grinding wheel drive mechanism with anti-water leakage function. Background Technology

[0002] In modern eyeglass lens manufacturing, edging machines are key equipment used to cut and grind the edges of lenses to achieve their desired shape. To achieve high-precision lens shaping, most edging machines use motor-driven grinding wheels to perform the cutting operation.

[0003] Currently, the widely used grinding wheel drive structure typically employs an external motor, belt drive, and a drive shaft that passes through a hole into a sealed machining chamber. While this traditional structure offers some machining capabilities, it suffers from the following main problems in high-frequency spraying environments:

[0004] Motor damage due to water ingress: During the grinding process, coolant needs to be continuously sprayed to control the temperature rise and remove lens debris, which generates a large amount of water mist. Since the motor shaft must pass through the cavity through-hole to connect with the internal grinding wheel, a natural gap channel is formed between the shaft and the hole. Water mist can easily seep back into the motor along this path, causing the motor to become damp, short-circuit, or even burn out.

[0005] Severe external contamination of equipment: Cooling water will splash onto the outside of the equipment and the ground under the high-speed action of spraying and rotating grinding wheel. Once the water mist seeps out through the drive shaft through hole, it will also cause contamination of the motor surface or electrical control components, exacerbating the risk of failure and increasing the cost of daily cleaning and maintenance.

[0006] Lubrication system is prone to failure: Due to the limited sealing between the drive shaft and the sealing structure, sprayed water or debris may enter the bearing or lubrication area, causing lubricating grease emulsification and lubrication failure, which in turn causes bearing wear, increased rotational resistance and shortened equipment life.

[0007] Belt drives are unreliable: Traditional belt drive structures suffer from uneven stress, slippage, and difficulty in maintaining tension. Under high-speed rotation conditions, belts are prone to loosening, tooth skipping, or even breakage. In addition, belt drives exposed to water mist are also susceptible to moisture and slippage, reducing transmission efficiency and increasing replacement frequency and maintenance burden. Utility Model Content

[0008] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a waterproof direct-drive grinding wheel drive mechanism for eyeglass lens edging machines. Through multi-layered physical guidance and barriers, it significantly improves waterproofing capabilities, protects the motor, extends equipment life, and effectively avoids environmental pollution.

[0009] To achieve the above objectives, the present invention adopts the following technical solution: it includes a housing cavity 1, a motor 2, a grinding wheel mechanism 3, and a sealing block 4. A through hole 11 is opened on the housing cavity 1. The motor output shaft 21 of the motor 2 passes through the through hole 11 and connects to the grinding wheel mechanism 3 inside the housing cavity 1. A sealing block 4 is provided on the inner side of the through hole 11. Drainage grooves are provided on the lower part of both the inner and outer sides of the through hole 11.

[0010] A circular groove 12 is provided on the inner periphery of the through hole 11, and a boss 13 is provided on the inner side of the groove 12. The top surface of the boss 13 is lower than the inner surface of the shell cavity 1.

[0011] The sealing block 4 is a central hole cover structure. The interior of the sealing block 4 is a through central hole 41. One end face of the sealing block 4 is provided with a cover groove 42. The sealing block 4 covers the through hole 11. The cover groove 42 corresponds to the boss 13 on the outside of the through hole 11. The output shaft of the motor 2 passes through the through central hole 41.

[0012] An inner drainage groove 111 is provided on the inner cavity wall at the lower part of the through hole 11. The inner drainage groove 111 is vertically arranged and is connected to the settling tank 12 to form an integral settling tank.

[0013] A circular recessed surface 112 is provided on the cavity wall outside the through hole 11. The circular recessed surface 112 is located on the outer ring of the through hole 11 and is concentric with the through hole 11. An external drainage groove 113 is provided at the lower part of the circular recessed surface 112. The external drainage groove 113 is vertically arranged and the depth of the external drainage groove 113 is the same as that of the circular recessed surface 112.

[0014] The working principle of this utility model is as follows: In the assembly structure, the motor 2 passes through the through hole 11 on the side wall of the housing cavity 1 via its motor output shaft 21, and is directly connected to the grinding wheel mechanism 3 inside the cavity to achieve a direct drive transmission structure. To prevent water mist and coolant from entering the motor through the through hole, the through hole 11 is designed with a multi-layered anti-seepage and drainage structure.

[0015] First, the sealing block 4 is located inside the through hole 11 and has a central hole cover shape, with a central hole 41 penetrating through the middle. The motor shaft 21 is connected to the grinding wheel mechanism through this central hole. One end face of the sealing block 4 is provided with an annular cover groove 42, which precisely matches the boss 13 on the outside of the through hole 11 during installation, achieving structural engagement and axial sealing. This forms a physical barrier when the motor is running at high speed, reducing water vapor infiltration. Even if water mist generated by the internal grinding wheel mechanism enters the motor shaft, most of it is blocked by the cover-shaped sealing block 4 and flows down through the inner flow groove 111, thus reducing overflow. Even if a small amount overflows, it will continue to overflow through the outer drainage groove 113 and will not affect the safety of the motor 2.

[0016] Secondly, drainage guiding structures are designed on the lower inner and outer sides of the through hole 11:

[0017] An inner drainage channel 111 is provided on the inner side, which extends vertically to connect with the bottom of the settling tank 12. It can guide a small amount of seepage water to flow into the settling tank along the wall of the through hole and collect and discharge it, preventing liquid from accumulating inside the through hole.

[0018] A circular sunken surface 112 is provided on the outside of the through hole, forming an annular depression structure around the through hole. A vertically arranged external drainage groove 113 is connected below it, which can further drain residual water and prevent it from seeping into the motor along the axial direction.

[0019] It is worth noting that the design of the settling tank 12 and the boss 13 has a dual function: on the one hand, the settling tank 12 serves as a water flow collection area to reduce the risk of liquid overflow; on the other hand, the height of the boss 13 is lower than the inner wall of the cavity, which can effectively slow down the water flow speed, weaken its radial impact force, and improve the reliability of the entire sealing structure.

[0020] Throughout the entire operation, the sprayed water mist is mainly blocked at the outer protrusion. If a small amount of coolant or water mist seeps along the axial direction, it will be guided out by the settling tank and diversion tank system to prevent it from contacting the motor body. This achieves a multi-level protection principle of "layered blocking + guided drainage", which greatly improves the equipment's anti-seepage performance and operational stability.

[0021] The beneficial effects of this utility model after adopting the above technical solution are as follows: By setting a sealing block and a concentric boss structure, it forms a double barrier in both the axial and radial directions, preventing a large amount of water mist, water droplets, and debris generated during the spraying process from entering the motor, thus solving the problem of water ingress damage to traditional motors and improving equipment safety and service life. Inner and outer drainage channels are respectively set on the inner and outer sides of the through hole, and are connected to the settling tank structure to form a continuous and independent liquid guiding path, ensuring that coolant residue will not accumulate in the sealing area, effectively avoiding lubrication failure and corrosion risks caused by water accumulation. The sealing block adopts a center-hole cap-shaped design, precisely fitting the boss, providing both good axial sealing capability and not interfering with the normal rotation of the motor output shaft, making it suitable for stable operation under high-speed conditions.

[0022] This utility model features a high degree of structural integration and a strong sealing level, making it suitable for long-term stable operation of edging machines in environments with spraying, high humidity, and high particle concentration, ensuring lens processing accuracy and continuous operation capability. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the internal structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the structure of this utility model after the motor 2 and the grinding wheel mechanism 3 have been removed;

[0026] Figure 3 yes Figure 2 Enlarged view of part E;

[0027] Figure 4 yes Figure 2 View from direction A;

[0028] Figure 5 yes Figure 2 View from direction B;

[0029] Figure 6 A schematic diagram of the structure of the sealing block 4 in this utility model;

[0030] Figure 7 yes Figure 6 DD section view.

[0031] Explanation of reference numerals in the attached drawings: 1. Housing cavity; 2. Motor; 3. Grinding wheel mechanism; 4. Sealing block; 11. Through hole; 21. Motor output shaft; 12. Circular recessed groove; 41. Through center hole; 42. Cover groove; 13. Boss; 111. Inner drainage groove; 112. Circular recessed surface; 113. Outer drainage groove. Detailed Implementation

[0032] See Figure 1-7As shown, the technical solution adopted in this specific embodiment is as follows: It includes a housing cavity 1, a motor 2, a grinding wheel mechanism 3, and a sealing block 4. A through hole 11 is opened on the housing cavity 1. The motor output shaft 21 of the motor 2 passes through the through hole 11 and connects to the grinding wheel mechanism 3 inside the housing cavity 1. A sealing block 4 is provided on the inner side of the through hole 11. Drainage grooves are provided on the lower parts of both the inner and outer sides of the through hole 11. A circular recessed groove 12 is provided on the outer periphery of the inner side of the through hole 11. A boss 13 is located on the inner side of the recessed groove 12, and the top surface of the boss 13 is lower than the inner surface of the housing cavity 1. The sealing block 4 has a central hole cap structure. The interior of the sealing block 4 has a through-center hole 41. A cover groove 42 is provided on one end face of the sealing block 4. The sealing block 4 covers the through hole 11, and the cover groove 42 corresponds to the boss 13 on the outer side of the through hole 11. The output shaft of the motor 2 passes through the through-center hole 41. An inner drainage groove 111 is provided on the inner cavity wall at the lower part of the through hole 11. The inner drainage groove 111 is vertically arranged and is connected to the settling groove 12 to form an integral settling groove. A circular recessed surface 112 is provided on the cavity wall on the outer side of the through hole 11. The circular recessed surface 112 is arranged on the outer ring of the through hole 11 and is concentric with the through hole 11. An outer drainage groove 113 is provided at the lower part of the circular recessed surface 112. The outer drainage groove 113 is vertically arranged and has the same depth as the circular recessed surface 112.

[0033] In this specific embodiment, the boss 13 can also be a spiral guide boss, a stepped multi-stage boss, or an inclined guide boss; the material of the sealing block 4 is a polytetrafluoroethylene bushing: wear-resistant and hydrophobic, and is fixed to the inside of the through hole 11 by a snap fastener.

[0034] The internal and external drainage channels can also be configured as spiral drainage channels or porous seepage drainage structures.

[0035] By incorporating a sealing block and concentric boss structure, it forms a double barrier in both the axial and radial directions, preventing the large amounts of water mist, droplets, and debris generated during spraying from entering the motor. This solves the problem of water ingress damage in traditional motors, improving equipment safety and service life. Inner and outer drainage channels are respectively located on the inner and outer sides of the through-hole, and are connected to the settling tank structure, forming a continuous and independent liquid flow path. This ensures that coolant residue does not accumulate in the sealing area, effectively avoiding lubrication failure and corrosion risks caused by water accumulation. The sealing block adopts a center-hole cap design, precisely fitting the boss, providing excellent axial sealing capabilities without interfering with the normal rotation of the motor output shaft, making it suitable for stable operation under high-speed conditions.

[0036] This utility model features a high degree of structural integration and a strong sealing level, making it suitable for long-term stable operation of edging machines in environments with spraying, high humidity, and high particle concentration, ensuring lens processing accuracy and continuous operation capability.

[0037] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A water-resistant direct-drive grinding wheel drive mechanism for eyeglass lens edging machines, characterized in that: It includes a housing cavity (1), a motor (2), a grinding wheel mechanism (3), and a sealing block (4). A through hole (11) is opened on the housing cavity (1). The motor output shaft (21) of the motor (2) passes through the through hole (11) and connects to the grinding wheel mechanism (3) inside the housing cavity (1). A sealing block (4) is provided on the inner side of the through hole (11). Drainage grooves are provided on the lower part of both the inner and outer sides of the through hole (11).

2. The water-tight direct drive spectacle lens edger grinding wheel drive mechanism according to claim 1, characterized in that: A circular groove (12) is provided on the inner periphery of the through hole (11), and a boss (13) is located on the inner side of the groove (12). The top surface of the boss (13) is lower than the inner surface of the shell cavity (1).

3. The water-tight direct drive spectacle lens edger grinding wheel drive mechanism according to claim 1, wherein: The sealing block (4) is a central hole cover structure. The interior of the sealing block (4) is a through central hole (41). One end face of the sealing block (4) is provided with a cover groove (42). The sealing block (4) covers the through hole (11). The cover groove (42) corresponds to the boss (13) on the outside of the through hole (11). The output shaft of the motor (2) passes through the through central hole (41).

4. The water-tight direct drive spectacle lens edger grinding wheel drive mechanism of claim 1, wherein: An inner drainage groove (111) is provided on the inner cavity wall at the lower part of the through hole (11). The inner drainage groove (111) is vertically arranged and is connected to the sink (12) to form an integral sink.

5. The water-tight direct drive spectacle lens edger grinding wheel drive mechanism according to claim 1, wherein: A circular recessed surface (112) is provided on the cavity wall outside the through hole (11). The circular recessed surface (112) is located on the outer ring of the through hole (11) and is concentric with the through hole (11). An external drainage groove (113) is provided at the lower part of the circular recessed surface (112). The external drainage groove (113) is vertically arranged and the depth of the external drainage groove (113) is the same as that of the circular recessed surface (112).

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