Television backlight lens polishing equipment

Abstract

The invention relates to the technical field of lens polishing, and discloses television backlight lens polishing equipment which comprises an operation table, a polishing mechanism, a guide rail, a clamping mechanism and a dust collection mechanism. The operation table is provided with a loading position and a polishing position; the polishing mechanism is arranged at the polishing position of the operation table; the guide rail is arranged on the operation table, is positioned between the loading position and the polishing position, and comprises a forward rail and a backward rail; the clamping mechanism comprises a supporting body, a rotating base, a main clamping piece, an auxiliary clamping piece and a linkage assembly. The dust collection mechanism is arranged on the operation table, located between the loading position and the polishing position and used for providing suction force for a to-be-polished object on the moving path of the loading position and the polishing position. By means of the lens polishing device, dust is not prone to remaining after lenses are polished.

Description

Technical Field

[0001] The present application relates to the technical field of lens grinding, and in particular to a grinding device for a TV backlight lens. Background Art

[0002] The backlight lens of a TV is a core optical component in the backlight module of liquid crystal display technology, which is used to direct, uniformly diffuse, and enhance the brightness of the light emitted by the LED light source. The lens needs to be ground during the production process, for example, grinding the light incident surface and the light exit surface of the lens.

[0003] The grinding devices currently used for grinding lenses are usually equipped with a dust suction system to suck out the generated dust during the grinding process. However, the suction pipe in the dust suction system usually has a fixed orientation, resulting in ineffective suction of dust in some areas during the grinding process. Especially at the edges and non-grinding surfaces of the lens, the remaining dust is likely to affect the subsequent use effect of the lens. Summary of the Invention

[0004] In order to make it difficult for dust to remain after the lens is ground, the present application provides a grinding device for a TV backlight lens.

[0005] The present application provides a grinding device for a TV backlight lens, adopting the following technical solutions: A grinding device for a TV backlight lens, comprising: An operating table, a grinding mechanism, a guiding track, a clamping mechanism, and a dust suction mechanism; The operating table has a loading position and a grinding position; The grinding mechanism is arranged at the grinding position of the operating table; The guiding track is arranged on the operating table, between the loading position and the grinding position, and includes a forward track and a retracting track; The clamping mechanism includes a support body, a rotating seat, a main clamping member, a secondary clamping member, and a linkage assembly; there are two groups of the support bodies, and the two groups of the support bodies move synchronously between the loading position and the grinding position; the rotating seat is rotatably connected to the support body, the main clamping member and the secondary clamping member are respectively arranged on the rotating seats of the two groups of the support bodies for jointly clamping the object to be ground; the linkage assembly is arranged on the support body and cooperates with the rotating seat; When the support body moves from the loading position to the grinding position, the linkage assembly passes through the forward track, and the rotating seat is positioned relative to the support body; when the support body moves from the grinding position to the loading position, the linkage assembly passes through the retracting track, and at this time, the linkage assembly drives the rotating seat, the main clamping member, and the secondary clamping member to rotate together; The dust suction mechanism is arranged on the operating table and is located between the loading position and the grinding position, and is used to provide suction force for the moving path of the object to be ground between the loading position and the grinding position.

[0006] By adopting the above technical solution, the main clamping member and the auxiliary clamping member jointly clamp the object to be ground, so as to drive the object to be ground to rotate together during the process of the support body moving from the grinding position to the loading position, and the lens is sucked by the dust suction mechanism during the rotation process, so that the whole lens can be sucked in all directions. At the same time, the dust adsorbed by the lens itself can be assisted to leave during the rotation process, so that the lens is not likely to leave residual dust when moving to the loading position.

[0007] Optionally, the guiding track further includes a first track and a second track; the first track is located at the loading position, and one end of the forward track close to the loading position, one end of the retracting track close to the loading position and the first track are interconnected; the second track is located at the grinding position, and one end of the forward track close to the grinding position, one end of the retracting track close to the grinding position and the second track are interconnected; a first stop member is hinged at the junction of the forward track and the retracting track close to the loading position, and a second stop member is hinged at the junction of the forward track and the retracting track close to the grinding position; The first stop member has a tendency to cut off the path from the first track to the retracting track, and the second stop member has a tendency to cut off the path from the second track to the forward track; when the support body moves from the loading position to the grinding position, the linkage assembly sequentially moves from the first track to the forward track, and then pushes open the second stop member to enter the second track; when the support body moves from the grinding position to the loading position, the linkage assembly sequentially moves from the second track to the retracting track, and then pushes open the first stop member to enter the first track.

[0008] By adopting the above technical solution, the truncation tendency of the first stop member and the second stop member enables the linkage assembly to accurately move from the loading position to the grinding position or return from the grinding position to the loading position along the predetermined path during the movement of the support body, avoiding path confusion.

[0009] Optionally, the linkage assembly includes a moving rod and a transmission member; the moving rod can move up and down and horizontally on the support body, and the transmission member is arranged between the moving rod and the rotating seat; when the moving rod moves up and down, the transmission member drives the rotating seat to rotate, and when the moving rod moves horizontally, the transmission member is positioned relative to the support body; When the linkage assembly moves, the moving rod moves on the guiding track. The moving rod abuts against the inner bottom wall of the guiding track, and the inner bottom wall of the forward track is horizontally flush along the extending direction of the forward track. The inner bottom wall of the retracting track undulates reciprocally along the extending direction of the retracting track. The moving rod enters the forward track through horizontal guiding. When the moving rod moves in the retracting track, it moves up and down reciprocally.

[0010] By adopting the above technical solution, the different moving modes of the moving rod on the forward track and the retracting track, combined with the flat and undulating designs of the inner bottom wall of the track, enable the clamping mechanism to remain stable when moving forward and drive the rotating seat to rotate through the reciprocating up and down movement of the moving rod when returning, thereby driving the clamped lens to rotate.

[0011] Optionally, the transmission member includes a rotating shaft, a main sprocket, a sub-sprocket and a chain. The rotating shaft is rotatably connected in the support body and the rotation axis is parallel to the rotation axis of the rotating seat. The main sprockets are coaxially sleeved and fixed on the rotating shaft. The sub-sprockets are coaxially sleeved and fixed on the rotating seat. The chain is simultaneously sleeved and meshed with the main sprocket and the sub-sprocket. A rack is fixedly arranged on the moving rod in the vertical direction. The rotating shaft has an engaging section that meshes with the rack.

[0012] By adopting the above technical solution, the composite structure of sprocket-chain transmission and rack engagement can convert the up and down movement of the moving rod into the rotational movement of the rotating seat to realize the rotation of the lens.

[0013] Optionally, a limiting track is fixed on the guiding track. The moving rod abuts between the inner bottom wall of the guiding track and the inner top wall of the limiting track, and the vertical linear distance from any point on the inner top wall of the limiting track to the inner bottom wall of the guiding track is the same.

[0014] By adopting the above technical solution, the double abutment of the limiting track and the guiding track can constrain the vertical movement of the moving rod and improve the stability of the moving rod.

[0015] Optionally, the main clamping member includes a main clamping seat, a threaded column and a first guide rod. The threaded column is rotatably connected to the main clamping seat. The threaded column is simultaneously threaded through the corresponding rotating seat along the distribution direction of the two groups of support bodies. The first guide rod is connected to the main clamping seat, and the first guide rod axially slides through the rotating seat in parallel with the threaded column.

[0016] By adopting the above technical solution, the main clamping seat can adjust the distance between the clamping seat and the rotating seat through the threaded movement of the threaded column to improve the flexibility of the clamping mechanism.

[0017] Optionally, the secondary clamping member includes a secondary clamping seat, a through rod, a second guide rod, and an elastic part; the through rod is connected to the secondary clamping seat, the through rod penetrates through the corresponding secondary clamping seat, the second guide rod is connected to the secondary clamping seat, and the second guide rod slidably penetrates through the rotating seat along the direction parallel to the penetration direction of the through rod; the elastic part abuts between the rotating seat and the secondary clamping seat to apply an elastic force to the secondary clamping seat to move it in the direction close to the main clamping seat.

[0018] By adopting the above technical solution, by pulling the through rod, the position of the secondary clamping seat can be quickly moved, and releasing the elastic part of the through rod can drive the secondary clamping seat to automatically clamp the object to be clamped in the direction close to the main clamping seat, so as to improve the convenience of installing the object to be clamped on the clamping mechanism.

[0019] Optionally, a suction attachment moves up and down at the grinding position of the operating table, and the suction attachment abuts against the object to be ground and then is evacuated by an air extraction pump.

[0020] By adopting the above technical solution, the suction attachment tightly holds the object to be ground by negative pressure to improve the stability of the object to be ground during grinding.

[0021] Optionally, the dust suction mechanism is communicated with the air extraction pump through a first pipeline, the suction attachment is communicated with the air extraction pump through a second pipeline, and electromagnetic valves are provided on both the first pipeline and the second pipeline.

[0022] By adopting the above technical solution, the communication state of the first pipeline and the second pipeline can be flexibly adjusted through the electromagnetic valve.

[0023] In summary, the present application includes at least one of the following beneficial effects: 1. Through the linkage component cooperating with the guiding track, when the support body moves from the loading position to the grinding position, the main clamping member and the secondary clamping member can stably clamp the lens. When the support body moves from the grinding position to the loading position, the main clamping member and the secondary clamping member can drive the lens to rotate, and the dust suction mechanism sucks dust from the rotating lens, thereby increasing the dust suction range of the lens, and the rotation of the lens can assist the dust adsorbed on it to fall. Moreover, the separation of the loading position and the grinding position enables the operator to load and unload the lens at the loading position, reducing the risk of the operator coming into contact with the grinding mechanism and improving the safety of the operation; 2. Through the cooperation of the suction attachment and the lens, the stability of the lens during grinding can be improved. Description of the Drawings

[0024] Figure 1 is a schematic structural diagram of an embodiment of the present application; Figure 2 is a schematic structural diagram of the bottom surface of the operating table of an embodiment of the present application; Figure 3 It is a schematic structural diagram of the support body and the auxiliary clamping member in the embodiment of the present application; Figure 4 It is Figure 3 the sectional view at A-A in Figure 5 It is Figure 3 the sectional view at B-B in Figure 6 It is the top view of the guiding track in the embodiment of the present application; Figure 7 It is the perspective view when the conveying track, the guiding track and the moving rod cooperate in the embodiment of the present application; Explanation of reference numerals: 1, operating table; 2, guiding track; 201, forward track; 202, backward track; 203, first track; 204, second track; 3, loading position; 4, grinding position; 5, support body; 6, rotating seat; 7, main clamping member; 71, main clamping seat; 72, threaded column; 73, first guide rod; 8, auxiliary clamping member; 81, auxiliary clamping seat; 82, through rod; 83, second guide rod; 84, elastic part; 9, linkage assembly; 91, moving rod; 92, transmission member; 921, rotating shaft; 922, main sprocket; 923, auxiliary sprocket; 924, chain; 10, first stop member; 11, second stop member; 12, rack; 13, meshing section; 14, limiting track; 15, adsorbing member; 16, first pipeline; 17, second pipeline; 18, bracket; 19, telescopic power; 20, rotating power; 21, grinding head; 22, guiding rod; 23, guiding groove; 24, connecting rod; 25, placing plate; 26, moving hole; 27, dust suction box; 28, first electric telescopic rod; 29, second electric telescopic rod; 30, guiding groove. Detailed implementation manners

[0025] The following further elaborates on the present application in conjunction with Figure 1 the appended Figure 7 drawings for a more detailed description.

[0026] The embodiment of the present application discloses a grinding device for a TV backlight lens. Referring to Figure 1 , the grinding device for a TV backlight lens includes an operating table 1, and a grinding mechanism, a guiding track 2, a limiting track 14, a clamping mechanism and a dust suction mechanism arranged on the operating table 1. Among them, the operating table 1 is supported by legs, the operating table 1 has a loading position 3 and a grinding position 4 distributed along a straight line, the clamping mechanism clamps the lens at the loading position 3, the grinding mechanism is located at the grinding position 4, the clamping mechanism cooperates with the guiding track 2 and the limiting track 14 to move to the grinding mechanism, and the grinding mechanism grinds the lens. When the clamping mechanism returns to the loading position 3, the clamping mechanism drives the ground lens to rotate reciprocally, and at the same time the dust suction mechanism sucks dust from the lens.

[0027] Referring to Figure 1, specifically, for the grinding mechanism, it includes a bracket 18, a telescopic power source 19, a rotational power source 20, and a grinding head 21. The bracket 18 is fixed to the operating table 1. The telescopic power source 19 is installed on the bracket 18 and has an output shaft that can telescopically move vertically. The rotational power source 20 is installed on the output shaft of the telescopic power source 19, and the rotational power source 20 has a rotational output end with an axis extending vertically. The grinding head 21 is installed on the output end of the rotational power source 20 and is driven by the rotational power source 20 to rotate. In this embodiment, the telescopic power source 19 is a cylinder, the rotational power source 20 is a motor, and the grinding head 21 can be detachably installed on the output end of the rotational power source 20 through bolts. A fixed dust suction device (not shown in the figure) can be provided at the grinding position 4 of the operating table 1 to suck dust during the grinding operation.

[0028] For the clamping mechanism, the clamping mechanism includes a support body 5, a rotating seat 6, a main clamping member 7, a secondary clamping member 8, and a linkage assembly 9.

[0029] Referring to Figure 1 and Figure 2 , there are two sets of support bodies 5 arranged symmetrically. The two sets of support bodies 5 linearly move on the upper surface of the operating table 1 along the distribution direction of the loading position 3 and the grinding position 4. And the two sets of support bodies 5 are fixed with guide rods 22 that penetrate downward through the operating table 1. Guide grooves 23 for the movement of the guide rods 22 are opened on the upper surface of the operating table 1. The guide rods 22 of the two sets of support bodies 5 are connected by a connecting rod 24. An electric telescopic rod 28 with a telescopic end connected to the connecting rod 24 is installed on the lower surface of the operating table 1. The telescopic movement of the telescopic end of the electric telescopic rod 28 drives the two sets of support bodies 5 to linearly move together along the distribution direction of the loading position 3 and the grinding position 4.

[0030] Referring to Figure 3 and Figure 4 , the rotating seats 6 correspond to the support bodies 5 one by one. The rotating seats 6 are rotatably connected in the support bodies 5 and are close to the upper part of the support bodies 5. The rotation axis of the rotating seats 6 is parallel to the distribution direction of the two sets of support bodies 5.

[0031] Referring to Figure 1 , the main clamping member 7 is installed on one of the support bodies 5, and the secondary clamping member 8 is installed on the other support body 5. Specifically, the main clamping member 7 includes a main clamping seat 71, a threaded column 72, and a first guide rod 73. The main clamping seat 71 is arc-shaped. The threaded column 72 is rotatably connected to the middle of the main clamping seat 71. The first guide rod 73 is fixed to the main clamping seat 71. And the threaded column 72 is coaxially threaded through the rotating seat 6 of the corresponding support body 5. The first guide rod 73 slidably penetrates through the rotating seat 6 along the direction parallel to the threaded column 72 to limit the relative rotation of the main clamping seat 71 with respect to the rotating seat 6. And through holes for the rotation of the threaded column 72 and the first guide rod 73 are opened on the support body 5. By threadedly moving the threaded column 72, the distance between the column clamping seat and the rotating seat 6 can be adjusted.

[0032] Reference Figure 1 and Figure 4 The secondary clamping member 8 includes a secondary clamping seat 81, a through rod 82, a second guide rod 83, and an elastic portion 84. The secondary clamping seat 81 is arc-shaped. The through rod 82 is fixed to the middle of the secondary clamping seat 81. The second guide rod 83 is fixed to the secondary clamping seat 81. The through rod 82 coaxially and slidably penetrates through the rotating seat 6 of the corresponding support body 5. The second guide rod 83 slidably penetrates through the rotating seat 6 along the sliding direction parallel to the through rod 82 to limit the rotation of the secondary clamping seat 81 relative to the rotating seat 6. A through hole for making way for the rotation of the through rod 82 and the first guide rod is formed in the support body 5. The elastic portion 84 is a spring, which abuts against the rotating seat 6 and the secondary clamping seat 81, and gives the secondary clamping seat 81 an elastic force to move towards the main clamping seat 71.

[0033] Moreover, placing plates 25 extending to face the arc opening are fixed to the bottoms of both the main clamping seat 71 and the secondary clamping seat 81. When placing a lens, the secondary clamping seat 81 is pulled open, the lens is placed on the placing plate 25 of the main clamping seat 71, and then the secondary clamping seat 81 is released. The elastic portion 84 drives the secondary clamping portion to clamp the lens tightly, so as to realize the common clamping of the lens by the main clamping seat 71 and the secondary clamping seat 81.

[0034] Reference Figure 3 、 Figure 4 and Figure 5 The linkage assembly 9 is arranged on the support body 5 and includes a moving rod 91 and a transmission member 92. The transmission member 92 includes a rotating shaft 921, a main sprocket 922, a secondary sprocket 923, and a chain 924. The rotating shaft 921 is rotatably connected to the support body 5 and is close to the lower part of the support body 5. The axis of the rotating shaft 921 itself coincides with the rotation axis and is parallel to the rotation axis of the rotating seat 6. The main sprocket 922 is coaxially fixed and sleeved on the outer wall of the rotating shaft 921. The secondary sprocket 923 is coaxially fixed and sleeved on the outer wall of the rotating seat 6. The chain 924 meshes with and sleeves on both the main sprocket 922 and the secondary sprocket 923 to achieve transmission.

[0035] The moving rod 91 is square rod-shaped and penetrates through the support body 5 for cooperation with the guiding track 2. Specifically, the support body 5 is provided with a moving hole 26 penetrating through the upper and lower surfaces of the support body 5 along the direction parallel to the axis of the rotating shaft 921. The moving rod 91 vertically slides through the support body 5 from the moving hole 26. The moving rod 91 can vertically slide and horizontally slide along the length direction of the moving hole 26 during movement.

[0036] The part of the moving rod 91 located in the support 5 has a rack 12 facing the rotating shaft 921. The teeth of the rack 12 are distributed vertically. The rotating shaft 921 has an engaging section 13 that meshes with the rack 12, and the teeth of the engaging section 13 are distributed circumferentially along the rotating shaft 921. When the moving rod 91 slides horizontally relative to the support 5, the teeth of the rack 12 slide horizontally on the teeth of the engaging section 13. When the moving rod 91 slides vertically relative to the support 5, the rack 12 drives the engaging section 13 to rotate, thereby causing the rotating shaft 921 to rotate. Furthermore, the rotating base 6 is driven to rotate through the transmission member 92, so that the main clamping seat 71 and the auxiliary clamping seat 81 drive the clamped lens to rotate together.

[0037] The lower end of the moving rod 91 extends into the guiding track 2 and abuts against the inner bottom wall of the guiding track 2. The upper end of the moving rod 91 extends into the limiting track 14 and abuts against the inner top wall of the limiting track 14. When the support 5 moves between the loading position 3 and the grinding position 4, the moving rod 91 moves in the guiding track 2 and the limiting track 14.

[0038] Referring to Figure 1 and Figure 6 For the guiding track 2, the guiding track 2 is opened on the tabletop of the operating table 1 and is located between the loading position 3 and the grinding position 4. The guiding track 2 includes a forward track 201, a retracting track 202, a first track 203, and a second track 204 for the moving rod 91 to abut against and move in.

[0039] Referring to Figure 6 and Figure 7 The retracting track 202 extends linearly along the distribution direction of the loading position 3 and the grinding position 4, and the width of the retracting track 202 is the same as the width of the moving rod 91. The forward track 201 extends arcuately along the distribution direction of the loading position 3 and the grinding position 4, and one end of the forward track 201 close to the loading position 3 is connected to one end of the retracting track 202 close to the loading position 3, and one end of the forward track 201 close to the grinding position 4 is connected to one end of the retracting track 202 close to the grinding position 4. The first track 203 and the second track 204 both extend along a direction parallel to the retracting track 202. The first track 203 is connected to the junction of the forward track 201 and the retracting track 202 close to the loading position 3, and the second track 204 is connected to the junction of the forward track 201 and the retracting track 202 close to the grinding position 4. Among them, the inner bottom surfaces of the forward track 201, the first track 203, and the second track 204 are mutually flush horizontal planes, and the inner bottom surface of the retracting track 202 is a wavy surface that reciprocally undulates along its own length direction.

[0040] At the junction of the forward rail 201 and the reverse rail 202 near the loading position 3, a first stop member 10 is hinged by a torsion spring hinge. The first stop member 10 is sheet-shaped, and the hinge axis of the first stop member 10 extends vertically. The torsion spring hinge causes the first stop member 10 to rotate to the junction of the reverse rail 202 and the first rail 203 when not subjected to other external forces, so as to cut off the path from the first rail 203 to the reverse rail 202. And the free end of the first stop member 10 abuts against the inner side wall at the junction of the first rail 203 and the reverse rail 202. The length direction of the first stop member 10 gradually inclines towards the loading position 3 away from the hinged end of the first stop member 10.

[0041] At the junction of the forward rail 201 and the reverse rail 202 near the grinding position 4, a second stop member 11 is hinged by a torsion spring hinge. The second stop member 11 is sheet-shaped, and the hinge axis of the second stop member 11 extends vertically. The torsion spring hinge causes the second stop member 11 to rotate to the junction of the forward rail 201 and the second rail 204 when not subjected to other external forces, so as to cut off the path from the second rail 204 to the forward rail 201. And the free end of the second stop member 11 abuts against the inner side wall at the junction of the forward rail 201 and the second rail 204. The length direction of the second stop member 11 extends towards the grinding position 4 away from the hinged end of the second stop member 11. The torsion spring hinge structure is a common prior art and will not be elaborated here, and it is only briefly shown in the drawings.

[0042] Refer to Figure 1 and Figure 6 Refer to

[0043] and Figure 1 The limit rail 14 is supported on the tabletop of the operation table 1 by a support column. A guide groove 30 for the moving rod 91 to enter and move is opened on the lower surface of the limit rail 14 and is opposite to the guide rail 2. The top of the moving rod 91 abuts against the inner top wall of the limit rail 14 at the guide groove 30. The extending direction of the guide groove 30 is the same as that of the guide rail 2, and the vertical straight-line distance from any point on the inner top wall of the limit rail 14 at the guide groove 30 to the inner bottom wall of the guide rail 2 is the same. Figure 2 Refer to

[0044] and Figure 1 The dust collection mechanism includes a dust collection box 27 penetrating through the operation table 1, and a first pipe 16 communicating with the dust collection box 27. The first pipe 16 is communicated with an air extraction pump (not shown in the figure). The dust collection box 27 has an upward opening and a filter bag (not shown in the figure) with an upward opening is installed in the box body. The filter bag can be disassembled from the box body, and the first pipe 16 provides a downward suction force above the filter bag. The dust collection box 27 is located between the loading position 3 and the grinding position 4 and is directly below the moving track of the lens, so as to be able to suck dust from the lens when the lens moves between the loading position 3 and the grinding position 4. It should be noted that the bottom of the dust collection box 27 is higher than the top of the connecting rod 24, so that the first electric telescopic rod 28 drives the connecting rod 24 to move without interfering with the dust collection box 27. Figure 6During the process of the support body 5 moving from the loading position 3 to the grinding position 4, the moving rod 91 is guided from the first rail 203 to the forward rail 201 via the first stopper 10, and then pushes open the second stopper 11 from the end of the forward rail 201 near the grinding position 4 and enters the second rail 204. Subsequently, the second stopper 11 resets. During this process, the moving rod 91 moves horizontally relative to the support body 5 on the support body 5, thus not driving the rotation of the rotating seat 6, enabling the main clamping seat 71 and the sub-clamping seat 81 to clamp the lens and maintain a horizontal state.

[0045] During the process of the support body 5 moving from the grinding position 4 to the loading position 3, the moving rod 91 is guided from the second rail 204 to the retraction rail 202 via the second stopper 11, and then pushes open the first stopper 10 from the end of the retraction rail 202 near the loading position 3 and enters the first rail 203. Subsequently, the first stopper 10 resets. During this process, the moving rod 91 is driven by the undulation of the retraction rail 202 to move up and down reciprocally, thus driving the lens to rotate reciprocally through the rotating shaft 921 and the transmission member 92, enabling the dust on the lens to be disturbed and fall, and the dust is sucked into the filter bag. At the same time, different surfaces of the lens are subjected to the suction force from below during the rotation process, and the dust attached to it can be sucked downward into the filter bag, so that it is not easy for dust to remain on the lens.

[0046] Refer to Figure 1 and Figure 2 Furthermore, in order to improve the stability of the lens during grinding at the grinding position 4, the operating table 1 is moved up and down at the grinding position 4 by the second electric telescopic rod 29 with a suction attachment 15. The suction attachment 15 is a suction cup, and the suction cup is connected to the air extraction pump through the second pipeline 17. Before grinding the lens, the suction cup moves upward to abut against the lower surface of the lens, and then the air extraction pump is used to extract vacuum to make the suction cup adsorb the lens, so as to improve the stability of the lens during grinding. And during the process of the suction cup cooperating with the lens, it can first drive the grinding head 21 to press downward against the lens through the telescopic power 19 to limit the upward movement of the lens during the cooperation with the suction cup.

[0047] The suction cup and the dust collection box 27 share the air extraction pump. The first pipeline 16 and the second pipeline 17 are jointly connected to a main pipe (not shown in the figure), and are connected to the air extraction pump through the main pipe, so that the first pipeline 16 and the second pipeline 17 are connected. And both the first pipeline 16 and the second pipeline 17 are provided with electromagnetic valves for adjusting the opening and closing of the pipeline, so as to be able to flexibly adjust the opening and closing of the pipeline. When grinding the lens, the first pipeline 16 is opened and the second pipeline 17 is closed to maintain the suction force of the suction cup. After grinding is completed, the air extraction pump stops first, and both the first pipeline 16 and the second pipeline 17 are opened, so that the gas in the external environment can enter the first pipeline 16 through the second pipeline 17 to release the suction force of the suction cup, and then the suction cup moves downward away from the lens. When the lens moves from the grinding position 4 to the loading position 3, the air extraction pump is turned on, the first pipeline 16 is closed and the second pipeline 17 is opened to realize the dust collection of the lens.

[0048] The implementation principle of a television backlight lens grinding device according to an embodiment of the present application is as follows: The lens is loaded at the loading position 3, and then the support 5 drives the lens to move to the grinding position 4 for grinding. During the process that the support 5 drives the lens to return to the loading position 3 after grinding, the moving rod 91 reciprocates up and down through the retraction rail 202, so as to drive the lens to rotate reciprocally through the rotating shaft 921 and the transmission member 92. During the rotation of the lens, the dust suction box 27 continuously sucks dust from the lens.

[0049] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A television backlight lens grinding device, characterized in that Including: An operating table (1), a grinding mechanism, a guiding track (2), a clamping mechanism, and a dust suction mechanism; The operating table (1) has a loading position (3) and a grinding position (4); The grinding mechanism is arranged at the grinding position (4) of the operating table (1); The guiding track (2) is arranged on the operating table (1), between the loading position (3) and the grinding position (4), and includes a forward track (201) and a retracting track (202); The clamping mechanism includes a support body (5), a rotating seat (6), a main clamping member (7), a sub-clamping member (8), and a linkage assembly (9); there are two groups of the support bodies (5), and the two groups of the support bodies (5) move synchronously between the loading position (3) and the grinding position (4); the rotating seat (6) is rotatably connected to the support body (5), the main clamping member (7) and the sub-clamping member (8) are respectively arranged on the rotating seats (6) of the two groups of the support bodies (5) for jointly clamping the object to be ground; the linkage assembly (9) is arranged on the support body (5) and cooperates with the rotating seat (6); When the support body (5) moves from the loading position (3) to the grinding position (4), the linkage assembly (9) passes through the forward track (201), and the rotating seat (6) is positioned relative to the support body (5); when the support body (5) moves from the grinding position (4) to the loading position (3), the linkage assembly (9) passes through the retracting track (202), and at this time the linkage assembly (9) drives the rotating seat (6), the main clamping member (7), and the sub-clamping member (8) to rotate together; The dust suction mechanism is arranged on the operating table (1) and is between the loading position (3) and the grinding position (4) for providing suction force to the moving path of the object to be ground between the loading position (3) and the grinding position (4).

2. The polishing device for a TV backlight lens according to claim 1, wherein: The guiding track (2) further includes a first track (203) and a second track (204); the first track (203) is located at the loading position (3), one end of the forward track (201) close to the loading position (3), one end of the retracting track (202) close to the loading position (3), and the first track (203) are interconnected; the second track (204) is located at the grinding position (4), one end of the forward track (201) close to the grinding position (4), one end of the retracting track (202) close to the grinding position (4), and the second track (204) are interconnected; a first stop member (10) is hinged at the junction of the forward track (201) and the retracting track (202) close to the loading position (3), and a second stop member (11) is hinged at the junction of the forward track (201) and the retracting track (202) close to the grinding position (4); The first stopper (10) has a tendency to cut off the path from the first rail (203) to the retraction rail (202), and the second stopper (11) has a tendency to cut off the path from the second rail (204) to the forward rail (201); when the support body (5) moves from the loading position (3) to the grinding position (4), the linkage assembly (9) sequentially moves from the first rail (203) to the forward rail (201), then pushes open the second stopper (11) and enters the second rail (204); when the support body (5) moves from the grinding position (4) to the loading position (3), the linkage assembly (9) sequentially moves from the second rail (204) to the retraction rail (202), then pushes open the first stopper (10) and enters the first rail (203).

3. A TV backlight lens grinding device according to claim 1, characterized in that: The linkage assembly (9) includes a moving rod (91) and a transmission member (92); the moving rod (91) can move vertically and horizontally on the support body (5), and the transmission member (92) is arranged between the moving rod (91) and the rotating seat (6); when the moving rod (91) moves vertically, it drives the rotating seat (6) to rotate through the transmission member (92), and when the moving rod (91) moves horizontally, the transmission member (92) is positioned relative to the support body (5); When the linkage assembly (9) moves, the moving rod (91) moves on the guide rail (2), the moving rod (91) abuts against the inner bottom wall of the guide rail (2), and the inner bottom wall of the forward rail (201) is horizontally flush along the extending direction of the forward rail (201), and the inner bottom wall of the retraction rail (202) undulates reciprocally along the extending direction of the retraction rail (202); the moving rod (91) enters the forward rail (201) through horizontal guiding, and the moving rod (91) moves reciprocally up and down when moving in the retraction rail (202).

4. The polishing device for a TV backlight lens according to claim 3, characterized in that: The transmission member (92) includes a rotating shaft (921), a main sprocket (922), a sub-sprocket (923) and a chain (924); the rotating shaft (921) is rotatably connected to the support body (5) and the axis of rotation is parallel to the axis of rotation of the rotating seat (6); the main sprockets (922) are coaxially sleeved and fixed on the rotating shaft (921), the sub-sprockets (923) are coaxially sleeved and fixed on the rotating seat (6), and the chain (924) is simultaneously sleeved and meshed with the main sprocket (922) and the sub-sprocket (923); A rack (12) is fixedly arranged on the moving rod (91) along the vertical direction, and the rotating shaft (921) has an engaging section (13) meshing with the rack (12).

5. The polishing device for a TV backlight lens according to claim 3, wherein: A limiting rail (14) is fixed on the guide rail (2), the moving rod (91) abuts between the inner bottom wall of the guide rail (2) and the inner top wall of the limiting rail (14), and the vertical straight-line distance from any point on the inner top wall of the limiting rail (14) to the inner bottom wall of the guide rail (2) is the same.

6. The polishing device for a TV backlight lens according to claim 1, wherein: The main clamping member (7) includes a main clamping seat (71), a threaded column (72), and a first guide rod (73); the threaded column (72) is rotatably connected to the main clamping seat (71), and the threaded column (72) is simultaneously threadedly penetrated through the corresponding rotating seat (6) along the distribution directions of the two groups of support bodies (5), the first guide rod (73) is connected to the main clamping seat (71), and the first guide rod (73) axially slides through the rotating seat (6) along a direction parallel to the threaded column (72).

7. The polishing device for a TV backlight lens according to claim 6, wherein: The auxiliary clamping member (8) includes an auxiliary clamping seat (81), a penetrating rod (82), a second guide rod (83), and an elastic part (84); the penetrating rod (82) is connected to the auxiliary clamping seat (81), the penetrating rod (82) penetrates through the corresponding auxiliary clamping seat (81), the second guide rod (83) is connected to the auxiliary clamping seat (81), and the second guide rod (83) axially slides through the rotating seat (6) along a direction parallel to the penetrating direction of the penetrating rod (82); the elastic part (84) abuts between the rotating seat (6) and the auxiliary clamping seat (81) to give the auxiliary clamping seat (81) an elastic force to move towards the main clamping seat (71).

8. The polishing device for a TV backlight lens according to claim 1, characterized in that: An adsorbing member (15) moves up and down at the grinding position (4) of the operating table (1), and the adsorbing member (15) abuts against the workpiece to be ground and then is evacuated by an air extraction pump.

9. The polishing device for a TV backlight lens according to claim 8, characterized in that: The dust suction mechanism is communicated with the air extraction pump through a first pipeline (16), the adsorbing member (15) is communicated with the air extraction pump through a second pipeline (17), and electromagnetic valves are provided on both the first pipeline (16) and the second pipeline (17).

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