Improved lens cleaning clamp

Abstract

The invention relates to the technical field of devices for grabbing objects during cleaning, in particular to an improved lens cleaning clamp which comprises a bearing frame used for containing a lens, a clamping assembly used for fixing the lens is arranged on the bearing frame and comprises a movable part, the movable part is rotationally arranged on the bearing frame and comprises an operation arm and a clamping arm, and the clamping arm is arranged on the operation arm. The operating arm and the clamping arm are integrally formed, the operating arm is rotationally connected with the bearing frame through a connecting piece, the operating arm comprises an operating section and a transition section which are integrally formed, the operating section and the transition section are arranged at an included angle, the operating arm is connected with the clamping arm through the transition section, the transition section is provided with a horizontal section and a vertical section, and the horizontal section and the operating section are arranged at an obtuse angle. The transition section is connected with a clamping arm arranged below the bearing frame through the vertical section. According to the lens cleaning clamp, the operation arm and the clamping arm which form a movable part are integrated, so that the deviation of the formed angle is avoided, and the clamping stability of the lens is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of devices for grasping objects during cleaning, in particular to an improved lens cleaning fixture. Background Art

[0002] At present, the lens cleaning line usually uses a chain conveyor to carry the lenses to be cleaned, and conveys the lenses to a cleaning box equipped with a brush for washing. In order to position the lenses on the carrying surface, a lens clamp is required. For example, the patent with announcement number CN220072735U discloses a clamp for a lens cleaning line, which cooperates with the operating end of the movable part through a guide piece arranged on the conveying line to drive the movable part to rotate relative to the carrying frame to realize the loosening or clamping of the lens placed on the carrying frame, and cooperates with the lens conveying clamp above the conveying line to realize automatic loading and removal of the lens, thereby effectively improving the cleaning efficiency of the lens cleaning line.

[0003] Among them, the movable part is rotatably arranged on the supporting frame, including a rotating shaft, an operating arm and a clamping arm. The operating arm is fixed to the top of the rotating shaft by screws, and the clamping arm is fixed to the bottom of the rotating shaft. An elastic connecting part is also arranged between the operating arm and the supporting frame. The upper end of the elastic connecting arm is connected to the operating arm, and the lower end is connected to the supporting frame. The guide plates on both sides of the conveying line are used to apply pressure to the elastic connecting arm to adjust the angle of the operating arm. When the operating arm rotates, it drives the clamping arm to rotate to complete the loosening or clamping action of the lens.

[0004] However, in actual use, it was found that the above-mentioned movable parts were only fastened by screws, and the long-term rotation of the operating arm would cause the screws to loosen. Once the screws were loose, the angle of the operating arm would shift, thereby affecting the opening and closing degree of the clamping arm, that is, the lens could not be clamped, causing the lens to fall, affecting the normal operation of the cleaning line. Summary of the invention

[0005] In order to solve the problem that the operating arm and the clamping arm in the existing clamp are separately arranged at the two ends of the rotating shaft and fixed with screws, and the screws are easy to loosen during long-term rotation, thereby affecting the angle formed by the operating arm and the clamping arm, the present invention provides an improved lens cleaning clamp, which integrates the operating arm and the clamping arm constituting the movable part to avoid deviation of the angle formed and ensure the clamping stability of the lens.

[0006] The present invention provides an improved lens cleaning fixture, comprising a bearing frame for placing lenses, a clamping assembly for fixing lenses provided on the bearing frame, the clamping assembly comprising a movable part, the movable part being rotatably arranged on the bearing frame, the movable part comprising an operating arm and a clamping arm, the operating arm and the clamping arm being integrally formed, and the operating arm being rotatably connected to the bearing frame through a connecting member. The lens is clamped by the integrally formed movable part, and the stability is good, and the opening and closing angle of the clamping arm is not easily affected by the loosening of bolts.

[0007] Furthermore, the operating arm includes an integrally formed operating section and a transition section, the operating section and the transition section are arranged at an angle, and the operating arm is connected to the clamping arm through the transition section. Through the operating section and the transition section arranged at an angle, when the operating section moves away from the lens, the transition section drives the clamping arm to move closer to the lens.

[0008] Furthermore, the transition section has a horizontal section and a vertical section, the horizontal section and the operating section are arranged at an obtuse angle, and the transition section is connected to the clamping arm arranged below the carrying frame through the vertical section. The operating section and the transition section arranged at an obtuse angle can better cooperate with the guide plates on both sides of the cleaning line.

[0009] Furthermore, a limit block is provided on the inner side of the bearing frame near the clamping arm, and the vertical section of the transition section can abut against the limit block. One end of the limit block fixed on the bearing frame extends to a position close to the lower end of the torsion spring. The limit block can not only limit the minimum clamping angle of the clamping arm, but also fix the lower end of the torsion spring to prevent the torsion spring from shifting during the rotation process.

[0010] Furthermore, the connecting member includes a shaft and a locking member, the upper end of the shaft is fixedly connected to the operating section, and the lower end of the shaft is rotatably arranged on the bearing frame through the locking member. The shaft and the locking member cooperate to drive the movable member to rotate on the bearing frame.

[0011] Furthermore, the shaft is an internally threaded tube fixedly arranged on the operating section, a light hole for accommodating the internally threaded tube is opened on the bearing frame, and the locking member is a bolt screwed on the end of the internally threaded tube extending from the light hole. The internally threaded tube is fixed to the bearing frame by the bolt, and the rotation of the internally threaded tube in the light hole is not hindered.

[0012] Furthermore, a support tube is provided between the operating section and the bearing frame, and the internally threaded tube is rotatably provided in the support tube. The support tube supports the operating arm to ensure that the internally threaded tube rotates stably inside the support tube.

[0013] Furthermore, a torsion spring is provided on the bearing frame for driving the movable part to rotate. The torsion spring is sleeved on the outside of the support tube. The torsion spring has an upper end and a lower end. The upper end is connected to the operating section, and the lower end is connected to the bearing frame. The torsion spring drives the operating section to rotate, thereby driving the clamping arm to rotate and clamp.

[0014] Furthermore, guide pieces adapted to the operating section are provided on both sides of the cleaning line for conveying the carrier frame, and are used to drive the clamping arm to detach from the outer edge of the lens, and the guide pieces abut against the end of the operating section, and the end of the operating section is also provided with a roller that rolls in contact with the guide pieces. The guide pieces on both sides apply pressure to the operating section, driving the operating section to rotate, that is, driving the clamping arm to rotate and open, at which time, the torsion spring is squeezed and stored, and when the guide piece is removed, the torsion spring recovers and drives the clamping arm to rotate and clamp.

[0015] Furthermore, the guide plate has a feeding end and a discharging end along the conveying direction of the cleaning line, the feeding end is provided with a guide slope, and the discharging end is provided with a buffer slope, and both the guide slope and the buffer slope are inclined toward the outside of the cleaning line. The guide slope is used to gather the operating arm extending outside the carrier frame between the guide strips on both sides, and the buffer slope is used to slowly separate the operating arm from the guide plate to prevent the clamping arm from quickly clamping and causing damage to the lens.

[0016] Furthermore, the clamping assembly also includes a fixing part for supporting the lens. Two fixing parts are provided and are fixedly arranged on the bearing frame. The two fixing parts cooperate with the movable part rotatably connected to the bearing frame to restrict the lens between the fixing part and the movable part. The cooperation between the movable part and the two fixing parts realizes three-point clamping of the lens with good stability.

[0017] Furthermore, the fixed part and the movable part are both provided with a positioning rod at one end close to the lens, and the positioning rod fits the outer edge of the lens. A relatively soft protective cover can be mounted on the positioning rod, and the positioning rod fitting the outer edge of the lens further improves the clamping stability.

[0018] Furthermore, a plurality of support rods are arranged in parallel in the carrying frame, and the plurality of support rods are arranged along the conveying direction of the cleaning line, and the positioning rods of the fixed part and the movable part are arranged in the gap between the adjacent support rods. The support rods increase the strength of the carrying frame, stably support the lens, and do not hinder the movement of the positioning rods on the clamping arm.

[0019] The beneficial effects of the present invention are: The present invention provides an improved lens cleaning fixture, in which the operating arm and the clamping arm traditionally arranged at the upper and lower ends of a rotating shaft are replaced with an integrally formed swing arm structure, so as to avoid the deviation of the angle formed by the operating arm and the clamping arm and ensure the clamping stability of the lens; even if the bolts for fixing the movable parts become loose due to long-term use, the cleaning line can still operate normally with the cooperation of the integrally formed swing arm structure and the torsion spring, and will not be affected by the loose bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some implementations of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work. Figure 1 It is a three-dimensional structural diagram of the lens cleaning fixture; Figure 2 This is a plan view of the structure of the lens cleaning fixture; Figure 3 It is a disassembled schematic diagram of the moving parts; Figure 4 It is a schematic diagram of the coordination between the fixture and the guide piece; In the figure, 1. bearing frame, 11. light hole, 12. support rod, 2. movable part, 21. operating arm, 211. roller, 22. clamping arm, 23. transition section, 231. horizontal section, 232. vertical section, 24. operating section, 3. connecting part, 31. shaft, 32. bolt, 33. torsion spring, 34. sliding bearing, 35. washer, 4. limit block, 5. support tube, 6. guide plate, 61. guide ramp, 62. buffer ramp, 7. fixing part, 71. positioning rod, 8. lens, 9. cleaning line. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] In order to realize the automatic loading of lenses, an improved lens cleaning fixture is designed, such as Figure 1 As shown, the fixture is used in conjunction with the conveying line, including a carrier frame 1 for placing the lens 8, the carrier frame 1 is provided with a clamping assembly for fixing the lens 8, the clamping assembly includes a movable part 2, the movable part 2 is rotatably arranged on the carrier frame 1, and the movable part 2 includes an operating arm 21 and a clamping arm 22. Guide pieces 6 adapted to the operating section 24 are arranged on both sides of the cleaning line 9 for conveying the carrier frame 1, and the guide pieces 6 are abutted against the end of the operating section 24 to drive the clamping arm 22 to separate from the outer edge of the lens 8.

[0023] In order to stably clamp the lens 8, the clamping assembly also includes a fixing part 7 for supporting the lens 8. Two fixing parts 7 are provided, both of which are fixedly arranged on the supporting frame 1. The two fixing parts 7 cooperate with the movable part 2 rotatably connected to the supporting frame 1 to restrict the lens 8 between the fixing part 7 and the movable part 2.

[0024] In order to further ensure the clamping stability, the fixed part 7 and the movable part 2 are both provided with a positioning rod 71 at one end close to the lens 8, and the positioning rod 71 is in contact with the outer edge of the lens 8. The three contact points form a triangle, and this structure is very stable in mechanics, which can effectively prevent the movement or rotation of the lens 8, and can evenly distribute the clamping force on the lens 8, reduce local stress concentration, and thus protect the lens 8 from damage.

[0025] In order to stably support the lens 8 , a plurality of support rods 12 are arranged in parallel in the carrier frame 1 . The plurality of support rods 12 are arranged along the conveying direction of the cleaning line 9 . The positioning rods 71 ​​of the fixed part 7 and the movable part 2 are arranged in the gaps between adjacent support rods 12 .

[0026] The carrier frame 1 is placed on the cleaning line 9. The cleaning line 9 is generally transported by chain transmission. The carrier frame 1 is fixed on the chain link by bolts to ensure stable cleaning. The guide plate 6 can be set at the position of loading the lens 8 or taking out the lens 8, and is used in conjunction with the lens 8 pick-up and placement clamp of the cleaning line 9. The lens 8 pick-up and placement clamp is set above the cleaning line 9. During the conveying process, when the carrying frame 1 passes through the guide piece 6, the operating sections 24 of the movable parts 2 on both sides of the carrying frame 1 are forced to rotate and squeeze the torsion springs 33, and drive the clamping arms 22 set at a fixed angle thereto to rotate toward the side away from the fixed part 7, so that the clamping space between the fixed part 7 and the movable part 2 becomes larger, which is convenient for placing the lens 8 into the clamping space or taking out the lens placed in the clamping space, thereby realizing automatic loading of the lens 8. When the carrying frame 1 continues to be transported to the point where it is separated from the guide piece 6, the movable part 2 returns to its initial position under the rebound action of the torsion spring 33, that is, it rotates toward the side close to the fixed part 7, so that the clamping space between the fixed part 7 and the movable part 2 becomes smaller, and the lens 8 placed in the clamping space is clamped and fixed.

[0027] like Figure 4 As shown, the guide piece 6 has a feeding end and a discharging end along the conveying direction of the cleaning line 9. The feeding end is provided with a guide slope 61, which can facilitate the operation section 24 of the movable part 2 to press against the inner wall of the guide piece 6. The discharging end is provided with a buffer slope 62, which can prevent the rapid rebound of the torsion spring 33 from driving the clamping arm 22 to damage the lens 8. The guide slope 61 and the buffer slope 62 are both inclined toward the outside of the cleaning line 9. The operation section 24 of the movable part 2 presses against the inner wall of the guide piece 6, so that the clamping arm 22 of the movable part 2 is separated from the outer circle of the lens 8. The operation section 24 of the movable part 2 is buffered and separated from the guide piece 6 along the buffer slope 62. During the slow separation process, the torsion spring 33 can be slowly rebounded, that is, the clamping arm 22 of the movable part 2 slowly presses against the outer edge of the lens 8 to stably clamp the lens 8. If the clamping arm 22 recovers quickly under the rebound of the torsion spring 33, it will quickly press against the outer edge of the lens 8, causing damage to the lens 8 or pushing the lens 8 out of the bearing frame 1, affecting the normal operation of the cleaning line 9.

[0028] In order to reduce the friction between the operating section 24 and the guide piece 6, a roller 211 that is in rolling contact with the guide piece 6 is further provided at the end of the operating section 24. The rolling cooperation between the roller 211 and the guide piece 6 reduces the friction, making the opening of the clamping arm 22 smoother.

[0029] The core of this technical solution is that Figure 1As shown, the operating arm 21 and the clamping arm 22 are integrally formed, and the operating arm 21 is rotatably connected to the carrier frame 1 through the connecting member 3. The operating arm 21 includes an integrally formed operating section 24 and a transition section 23. In order to facilitate the opening of the clamping arm 22 in cooperation with the guide piece 6, the operating section 24 and the transition section 23 are arranged at an angle, and the operating arm 21 is connected to the clamping arm 22 through the transition section 23. The integrated structure is changed to avoid the problem of the bolt 32 loosening due to long-term rotation, thereby affecting the opening angle deviation of the clamping arm 22, and the bolt 32 used to fix the movable part 2 is arranged below the carrier frame 1, that is, the rotation fatigue point is transferred to the bottom of the carrier frame 1, even if the bolt 32 is loose, but driven by the torsion spring 33, the opening angle of the movable part 2 will not be affected, effectively ensuring the normal operation of the cleaning line 9. Traditionally, the operating arm 21 and the clamping arm 22 are separately arranged at the upper and lower ends of the rotating shaft, and the operating arm 21 is fixed to the upper end of the rotating shaft by bolts 32, that is, the connection point of the bolts 32 at the upper end of the rotating shaft is the rotation fatigue point, and the stress is relatively concentrated. It is easy to loosen after long-term rotation. Once loose, it will cause the operating arm 21 and the guide piece 6 to not function properly, and then cause the clamping arm 22 at the lower end to open or clamp in place, affecting use. In this solution, the angles of the integrally formed operating arm 21 and clamping arm 22 are fixed, and there is no problem of the loosening of the operating arm 21 affecting the opening angle of the clamping arm 22, and it will not be affected by the loosening of the bolts 32.

[0030] In order to realize the integral formation of the upper operating arm 21 and the lower clamping arm 22, the transition section 23 has a horizontal section 231 and a vertical section 232. The horizontal section 231 and the operating section 24 are arranged at an obtuse angle. The transition section 23 is connected to the clamping arm 22 arranged below the carrier frame 1 through the vertical section 232. By adjusting the angle between the horizontal section 231 and the operating section 24, the opening angle of the clamping arm 22 is adjusted.

[0031] like Figure 2 As shown, in order to prevent the torsion spring 33 from rebounding excessively, a limit block 4 is provided at the inner side of the carrier frame 1 near the clamping arm 22, and the vertical section 232 of the transition section 23 can abut against the limit block 4. The limit block 4 is fixed to the carrier frame 1 by bolts, and the position of the limit block 4 can adjust the minimum spacing between the fixed part 7 and the movable part 2. In addition, the limit block 4 is provided with a wedge surface near the torsion spring 33, which can limit the lower end of the torsion spring 33 to prevent the torsion spring 33 from shifting during rotation.

[0032] like Figure 3As shown, in order to install the movable part 2 on the bearing frame 1, the connecting member 3 includes a shaft 31 and a locking member, the upper end of the shaft 31 is fixedly connected to the operating section 24, and the lower end of the shaft 31 is rotatably set on the bearing frame 1 through the locking member. The shaft 31 is an internally threaded tube fixedly set on the operating section 24, and the bearing frame 1 is provided with a light hole 11 for accommodating the internally threaded tube, and the locking member is a bolt 32 screwed on the end of the internally threaded tube extending from the light hole 11. In order to support the movable part 2, a support tube 5 is also provided between the operating section 24 and the bearing frame 1, and the internally threaded tube is rotatably set in the support tube 5.

[0033] The bearing frame 1 is provided with a torsion spring 33 for driving the movable part 2 to rotate. The torsion spring 33 is sleeved on the outside of the support tube 5. The torsion spring 33 has an upper end and a lower end. The upper end is connected to the operating section 24, and the lower end is connected to the bearing frame 1. Both the upper end and the lower end are provided with a semicircular hook. The bearing frame 1 is provided with a positioning hole for the semicircular hook to be buckled. Another semicircular hook is buckled at a position of the operating section 24 close to the roller 211.

[0034] In order to facilitate the assembly of the clamp, the internal threaded tube is pre-welded on the operating section 24, and the support tube 5 is pre-welded on the light hole 11 of the bearing frame 1. The torsion spring 33 is sleeved on the outside of the support tube 5 and the lower end of the torsion spring 33 is buckled in the positioning hole of the bearing frame 1. Then the internal threaded tube of the movable part 2 is inserted into the support tube 5, and the internal threaded tube is rotated and placed in the support tube 5 and extends from the light hole 11 of the bearing frame 1, and the extended end is connected to the bolt 32. In order to ensure the rotation stability of the movable part 2, the upper and lower ends of the support tube 5 are provided with sliding bearings 34 and washers 35. The sliding bearing 34 is a plug structure inserted into the support tube 5, and is made of self-lubricating PEEK material to play a role in lubrication and support.

[0035] The above description is only illustrative rather than restrictive of the present invention. Those skilled in the art will understand that many modifications, changes or equivalents may be made without departing from the spirit and scope defined by the appended claims, but all will fall within the scope of protection of the present invention.

Claims

1. An improved lens cleaning fixture, comprising a carrying frame (1) for placing a lens (8), the carrying frame (1) being provided with a clamping assembly for fixing the lens (8), the clamping assembly comprising a movable part (2), the movable part (2) being rotatably arranged on the carrying frame (1), characterized in that: The movable part (2) comprises an operating arm (21) and a clamping arm (22); the operating arm (21) and the clamping arm (22) are integrally formed; and the operating arm (21) is rotatably connected to the bearing frame (1) via a connecting part (3).

2. The improved lens cleaning fixture according to claim 1, characterized in that: The operating arm (21) comprises an operating section (24) and a transition section (23) which are integrally formed; the operating section (24) and the transition section (23) are arranged at an angle; and the operating arm (21) is connected to the clamping arm (22) via the transition section (23).

3. The improved lens cleaning fixture according to claim 2, characterized in that: The transition section (23) comprises a horizontal section (231) and a vertical section (232); the horizontal section (231) and the operating section (24) are arranged at an obtuse angle; and the transition section (23) is connected to a clamping arm (22) arranged below the supporting frame (1) via the vertical section (232).

4. The improved lens cleaning fixture according to claim 3, characterized in that: A limit block (4) is provided at a position on the inner side of the bearing frame (1) close to the clamping arm (22), and the vertical section (232) of the transition section (23) can abut against the limit block (4).

5. The improved lens cleaning fixture according to claim 2, characterized in that: The connecting member (3) comprises a shaft (31) and a locking member, the upper end of the shaft (31) is fixedly connected to the operating section (24), and the lower end of the shaft (31) is rotatably arranged on the bearing frame (1) via the locking member.

6. The improved lens cleaning fixture according to claim 5, characterized in that: The shaft (31) is an internally threaded tube fixedly mounted on the operating section (24); a light hole (11) for accommodating the internally threaded tube is provided on the bearing frame (1); and the locking member is a bolt (32) threadedly mounted on the end of the internally threaded tube extending from the light hole (11).

7. The improved lens cleaning fixture according to claim 6, characterized in that: A support tube (5) is also provided between the operating section (24) and the bearing frame (1), and the internally threaded tube is rotatably arranged in the support tube (5).

8. The improved lens cleaning fixture according to claim 2, characterized in that: The support frame (1) is provided with a torsion spring (33) for driving the movable part (2) to rotate. The torsion spring (33) is sleeved on the outside of the support tube (5). The torsion spring (33) has an upper end and a lower end. The upper end is connected to the operating section (24), and the lower end is connected to the support frame (1).

9. The improved lens cleaning fixture according to claim 8, characterized in that: Guide plates (6) adapted to the operating section (24) are arranged on both sides of the cleaning line (9) for conveying the carrier frame (1) and are used to drive the clamping arm (22) to separate from the outer edge of the lens (8), the guide plates (6) abutting against the end of the operating section (24), and the end of the operating section (24) is also provided with a roller (211) in rolling contact with the guide plates (6).

10. The improved lens cleaning fixture according to claim 9, characterized in that: The guide plate (6) has a feed end and a discharge end along the conveying direction of the cleaning line (9), the feed end is provided with a guide slope (61), and the discharge end is provided with a buffer slope (62), and the guide slope (61) and the buffer slope (62) are both inclined toward the outside of the cleaning line (9).

11. The improved lens cleaning fixture according to claim 1, characterized in that: The clamping assembly further comprises a fixing member (7) for supporting the lens (8), wherein two fixing members (7) are provided and are both fixedly arranged on the carrying frame (1), and the two fixing members (7) cooperate with a movable member (2) rotatably connected to the carrying frame (1) to restrict the lens (8) between the fixing member (7) and the movable member (2).

12. The improved lens cleaning fixture according to claim 11, characterized in that: A positioning rod (71) is provided at one end of the fixing member (7) and the movable member (2) close to the lens (8), and the positioning rod (71) is in contact with the outer edge of the lens (8).

13. The improved lens cleaning fixture according to claim 12, characterized in that: A plurality of support rods (12) are arranged in parallel in the carrying frame (1), the plurality of support rods (12) are arranged along the conveying direction of the cleaning line (9), and the positioning rods (71) of the fixed part (7) and the movable part (2) are arranged in the gap between adjacent support rods (12).

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