CN214779234U

CN214779234U - Light guide plate bevel edge processing device

Info

Publication number: CN214779234U
Application number: CN202121437581.7U
Authority: CN
Inventors: 杨为新
Original assignee: Chongqing Yiguangyuan Photoelectric Technology Co ltd
Current assignee: Chongqing Yiguangyuan Photoelectric Technology Co ltd
Priority date: 2021-06-26
Filing date: 2021-06-26
Publication date: 2021-11-19
Anticipated expiration: 2031-06-26

Abstract

The utility model belongs to the technical field of the technique of light guide plate and specifically relates to a light guide plate hypotenuse processingequipment is related to, including the frame, the one end of frame is provided with places the platform, the other end is provided with transmission device, and the frame is located to place and is provided with the processing agency between platform and the transmission device, and the frame slides along the length direction of frame and is provided with the mounting bracket, is provided with fixture on the mounting bracket, is provided with horizontal migration mechanism in the frame. The staff piles up the light guide plate and starts horizontal migration mechanism after placing the platform, make fixture light guide plate carry out the centre gripping, and place the light guide plate on the processing agency, after the processing, fixture carries out the centre gripping with the light guide plate, then start horizontal migration mechanism, make fixture place the light guide plate on transmission device, reciprocating motion through the mounting bracket, fixture piles up a plurality of light guide plates that have processed on transmission device, the manual work process of placing and piling up the light guide plate of staff has been saved, light guide plate hypotenuse machining efficiency has been improved.

Description

Light guide plate bevel edge processing device

Technical Field

The application relates to the technical field of light guide plates, in particular to a light guide plate bevel edge processing device.

Background

The design principle of the light guide plate is derived from a liquid crystal display screen of a notebook computer, and the light guide plate is a high-tech product for converting a linear light source into a surface light source. Due to the special optical requirements of the glass light guide plate, a grinding wheel is required to perform bevel edge processing on the light inlet of the light guide plate.

The patent of grant publication number for CN210210952U discloses a glass light guide plate hypotenuse processingequipment, including placing the frame, place the equal fixedly connected with compression frame in both sides of frame inner chamber, the inner chamber fixedly connected with locating plate of compression frame, the top intercommunication of compression frame has pneumatic chuck, place the top fixedly connected with gear motor of frame inner chamber, gear motor's output fixedly connected with driving gear.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: staff need place the light guide plate on pneumatic chuck manually earlier, wait to process and accomplish the back, take out the light guide plate from pneumatic chuck manually again to pile up, waste time and energy, light guide plate hypotenuse machining efficiency is low.

SUMMERY OF THE UTILITY MODEL

In order to improve light guide plate hypotenuse machining efficiency, this application provides a light guide plate hypotenuse processingequipment.

The application provides a light guide plate hypotenuse processingequipment adopts following technical scheme:

the utility model provides a light guide plate hypotenuse processingequipment, includes the frame, the one end of frame is provided with the platform of placing, the other end that are used for placing the light guide plate of treating processing and is provided with the transport mechanism who is used for piling up the light guide plate of processing, the frame is located to be provided with between placing platform and the transport mechanism and is used for carrying out the processing agency of hypotenuse processing to the light guide plate, the frame slides along the length direction of frame and is provided with the mounting bracket, be provided with the fixture who is used for centre gripping light guide plate on the mounting bracket, be provided with the horizontal migration mechanism who is used for ordering about the length reciprocating motion of mounting bracket along the frame in the frame.

By adopting the technical scheme, when the light guide plate is beveled, a worker firstly stacks a plurality of light guide plates to be processed on the placing table, then the horizontal moving mechanism is started to enable the clamping mechanism to move towards the direction close to the placing table and clamp the light guide plates to be processed, then the horizontal moving mechanism is started to enable the clamping mechanism to place the light guide plates to be processed on the processing mechanism, after the processing mechanism processes the light guide plates to be processed, the clamping mechanism clamps the processed light guide plates, then the horizontal moving mechanism is started to enable the clamping mechanism to move towards the direction close to the transmission mechanism and place the processed light guide plates on the transmission mechanism, the clamping mechanism stacks a plurality of processed light guide plates on the transmission mechanism through the reciprocating movement of the mounting frame, and the working process that the worker manually places and stacks the light guide plates is omitted, the bevel edge processing efficiency of the light guide plate is improved.

Optionally, the clamping mechanism comprises a supporting plate and a pneumatic sucker, the supporting plate is connected to the mounting frame in a sliding mode in the vertical direction, the pneumatic sucker array is arranged on one side, close to the rack, of the supporting plate, and a lifting mechanism used for driving the supporting plate to reciprocate in the vertical direction is arranged on the mounting frame.

Through adopting above-mentioned technical scheme, when centre gripping light guide plate, the staff starts elevating system earlier, moves the backup pad along vertical direction to the direction of being close to the frame, makes pneumatic sucking disc contact the light guide plate and adsorb the light guide plate firm, then starts elevating system and removes the backup pad to the direction of keeping away from the frame to drive the light guide plate and remove to the direction of keeping away from the frame, it is firm to adsorb the light guide plate.

Optionally, the lifting mechanism includes a first screw and a first driving source, the first screw is rotatably connected to the mounting frame along a vertical direction, the supporting plate is connected with the first screw in a threaded manner along a length direction of the first screw, and the first driving source is used for driving the first screw to rotate positively and negatively.

Through adopting above-mentioned technical scheme, when ordering about pneumatic sucking disc and adsorbing the light guide plate, the staff starts first driving source, and first driving source drives first screw rod corotation, makes threaded connection be close to the direction that is close to the frame along vertical direction in the backup pad on first screw rod, makes pneumatic sucking disc in the backup pad and light guide plate contact, and it is convenient to remove the backup pad.

Optionally, the horizontal migration mechanism includes second screw rod and second driving source, the second screw rod rotates along the length direction of frame and connects in the frame, the mounting bracket along the length direction of second screw rod and second screw rod threaded connection, the second driving source is used for driving the second screw rod just reversing.

Through adopting above-mentioned technical scheme, when ordering about the length direction reciprocating motion of mounting bracket along the frame, start the second driving source, the second driving source drives the second screw rod and rotates, makes threaded connection the mounting bracket on the second screw rod along the length direction reciprocating motion of frame to the light guide plate that makes the fixture centre gripping removes along the length direction of frame, and it is convenient to remove the mounting bracket.

Optionally, transmission device includes initiative running roller, driven running roller, transmission band and third driving source, the length direction interval rotation of initiative running roller and driven running roller along the frame is installed in the frame, the transmission band is connected on initiative running roller and driven running roller, the third driving source is used for ordering about initiative running roller just reversing.

By adopting the technical scheme, the clamping mechanism can stack a plurality of processed light guide plates on the conveying belt in sequence, after stacking for a batch, the worker starts the third driving source, the third driving source drives the driving roller to rotate, the transmission belt is driven to move in the direction far away from the frame by the sliding friction between the driving roller and the transmission belt, so that a plurality of processed light guide plates arranged on the transmission belt move in the direction far away from the frame, when the conveyer belt moves to the position that the distance between the edge of the processed light guide plate close to the rack and the edge of the conveyer belt close to one side of the rack is larger than the length of the light guide plate, a worker turns off the third driving source, then the clamping mechanism can stack the processed light guide plates of multiple batches on the conveying belt respectively, so that the workers can carry the processed light guide plates of multiple batches at one time, and the working strength of the workers is reduced.

Optionally, the frame is located the both sides of placing the platform and is provided with alignment mechanism, alignment mechanism includes two mounts, two the mount has a fixed plate along the equal sliding connection of length direction of perpendicular to frame, the mount sets up the both sides at the frame along the length direction symmetry of perpendicular to frame, be provided with the drive arrangement who is used for ordering about two fixed plates and is close to each other or keep away from on the mount.

Through adopting above-mentioned technical scheme, place the bench back when the staff will treat the light guide plate of processing, start drive arrangement, make two fixed plates remove to the direction that is close to each other to make the fixed plate with place the light guide plate butt of treating processing on placing the bench, make the edge of placing the bench light guide plate of treating processing be in same vertical plane, make things convenient for fixture to carry out the centre gripping to the light guide plate and place the light guide plate on processing agency.

Optionally, the driving device includes two cylinders, the two cylinders are respectively and fixedly disposed on the two fixing frames, and piston rods of the two cylinders are respectively and fixedly connected with one end of the two fixing plates, which is far away from each other.

Through adopting above-mentioned technical scheme, when ordering about two fixed plates and being close to each other, start two cylinders, the piston rod of cylinder removes to the direction that is close to each other to drive the fixed plate with piston rod fixed connection and remove to the direction of light guide plate, and with the light guide plate contact, it is convenient to remove the fixed plate.

Optionally, one side of each of the two fixing plates, which is close to each other, is provided with a cushion pad.

Through adopting above-mentioned technical scheme, when fixed plate and light guide plate contact, the blotter can prevent effectively that the fixed plate from scraping the flower with the light guide plate, improves the integrality of light guide plate.

In summary, the present application includes at least one of the following beneficial technical effects:

1. after the light guide plates are stacked on the placing table, a worker starts the horizontal moving mechanism to enable the light guide plates of the clamping mechanism to be clamped and place the light guide plates on the processing mechanism, after the light guide plates are processed, the clamping mechanism clamps the light guide plates, then the horizontal moving mechanism is started to enable the clamping mechanism to place the light guide plates on the transmission mechanism, and through the reciprocating movement of the mounting frame, the clamping mechanism stacks a plurality of processed light guide plates on the transmission mechanism, so that the working process that the worker manually places and stacks the light guide plates is omitted, and the bevel edge processing efficiency of the light guide plates is improved;

2. the clamping mechanism can stack a plurality of processed light guide plates on the transmission belt in sequence, when the light guide plates are stacked for a batch, a worker starts the third driving source, the third driving source drives the driving roller to rotate, the transmission belt is driven to move towards the direction far away from the rack through sliding friction between the driving roller and the transmission belt, so that a plurality of processed light guide plates placed on the transmission belt move towards the direction far away from the rack, when the transmission belt moves to the position that the distance between the edge of the processed light guide plates close to the rack and the edge of one side of the transmission belt close to the rack is larger than the length of the light guide plates, the worker closes the third driving source, then the clamping mechanism can stack the processed light guide plates of multiple batches on the transmission belt respectively, so that the worker can carry the processed light guide plates of multiple batches at one time, and the working strength of the worker is reduced;

3. after the staff will treat that the light guide plate of processing is placed placing the bench, start drive arrangement, make two fixed plates remove to the direction that is close to each other to make the fixed plate with place the light guide plate butt of treating processing on placing the bench, make the edge of placing the light guide plate of treating processing on placing the bench be in same vertical plane, make things convenient for fixture to carry out the centre gripping to the light guide plate and place the light guide plate on processing agency.

Drawings

Fig. 1 is a schematic overall structure diagram of a light guide plate beveling apparatus according to an embodiment of the present application.

Fig. 2 is a schematic structural view of a processing mechanism according to an embodiment of the present application.

Fig. 3 is a schematic structural diagram of a fixing mechanism, an alignment mechanism, and a clamping mechanism according to an embodiment of the present application.

Fig. 4 is a partially enlarged schematic view of a portion a in fig. 1.

Fig. 5 is a partial cross-sectional view of a frame according to an embodiment of the present application.

Description of reference numerals: 1. a frame; 2. a placing table; 3. a transport mechanism; 31. a driving roller; 32. a driven roller; 33. a conveyor belt; 34. a third drive source; 4. a processing mechanism; 41. a trimming assembly; 411. a carriage; 412. a grinding wheel machine; 423. placing the plate; 42. a fixing assembly; 421. a support bar; 422. a vacuum chuck; 423. placing the plate; 5. a mounting frame; 6. a clamping mechanism; 61. a support plate; 62. a pneumatic suction cup; 7. a horizontal movement mechanism; 71. a second screw; 72. a second drive source; 8. a lifting mechanism; 81. a first screw; 82. a first drive source; 9. an alignment mechanism; 91. a fixed mount; 92. a fixing plate; 10. a drive device; 101. a cylinder; 102. guiding the telescopic rod; 11. a cushion pad.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses light guide plate hypotenuse processingequipment. Referring to fig. 1, the light guide plate beveling apparatus includes a frame 1, and the frame 1 is sequentially provided with a placing table 2 for placing a light guide plate to be processed, a processing mechanism 4 for beveling the light guide plate, and a conveying mechanism 3 for stacking the processed light guide plate along a length direction of the frame 1. The rack 1 is provided with a mounting rack 5 in a sliding manner along the length direction of the rack 1, and the mounting rack 5 is provided with a clamping mechanism 6 for clamping the light guide plate. The staff piles up the light guide plate of treating processing on placing platform 2 earlier, and then fixture 6 will treat that the light guide plate of processing moves to machining mechanism 4 from placing platform 2, waits that the bevel processing is accomplished the back, and fixture 6 places the light guide plate of processing on transport mechanism 3 again, repeats above step, piles up the light guide plate of processing on transport mechanism 3.

Referring to fig. 1 and 2, in the present embodiment, the processing mechanism 4 is composed of a trimming assembly 41 and a fixing assembly 42. The edge cutting assembly 41 comprises a carriage 411 and a grinding wheel machine 412, the carriage 411 is slidably connected to the frame 1 along the length direction of the frame 1, and the grinding wheel machine 412 is slidably mounted on the carriage 411 along the vertical direction. Vacuum chuck 422 is installed in the array on frame 1, and bracing piece 421 is installed to vacuum chuck 422's both sides, and bracing piece 421 is scalable along vertical direction, installs on the roof of bracing piece 421 and places board 423. The clamping mechanism 6 places the clamped light guide plate to be processed on the vacuum chuck 422 and the placing plate 423, and the clamped light guide plate to be processed is firmly adsorbed by the vacuum chuck 422, then the sliding frame 411 is close to the direction of the light guide plate, so that the grinding wheel machine 412 on the sliding frame 411 is positioned right above the light guide plate to be processed, and then the grinding wheel machine 412 is close to the direction of the light guide plate and makes the grinding wheel on the grinding wheel machine 412 contact with the light guide plate to be processed at the bevel edge, thereby completing the process of processing the bevel edge of the light guide plate.

Referring to fig. 1 and 3, the clamping mechanism 6 includes a support plate 61 and pneumatic suction cups 62, the support plate 61 is slidably connected to the mounting frame 5 along the vertical direction, and the array of pneumatic suction cups 62 is installed on one side of the support plate 61 close to the rack 1. In the present embodiment, two sets of the pneumatic suction cups 62 are installed at intervals along the length direction of the rack 1, and two pneumatic suction cups 62 are installed at intervals along the length direction of the rack 1 in each set. An air source is arranged on the frame 1, and the pneumatic suction cup 62 is connected with the air source through an air pipe. The mounting frame 5 is provided with a lifting mechanism 8 for driving the support plate 61 to reciprocate along the vertical direction. The lifting mechanism 8 includes a first screw 81 and a first driving source 82, the first screw 81 is rotatably coupled to the mounting frame 5 in a vertical direction, and the support plate 61 is threadedly coupled to the first screw 81 in a length direction of the first screw 81. The first driving source 82 is used for driving the first screw 81 to rotate forward and backward, in this embodiment, the first driving source 82 adopts a servo motor, the servo motor is installed at one end of the mounting frame 5 far away from the rack 1, and an output shaft of the servo motor is coaxially and fixedly connected with the first screw 81 through a coupler. When the centre gripping light guide plate, the staff starts first driving source 82, first driving source 82 drives first screw 81 corotation, the backup pad 61 that makes threaded connection on first screw 81 is close to the direction that is close to frame 1 along vertical direction, make pneumatic suction cup 62 contact the light guide plate and adsorb the light guide plate and stabilize, then first driving source 82 drives first screw 81 reversal, move backup pad 61 to the direction of keeping away from frame 1, thereby drive the light guide plate and remove to the direction of keeping away from frame 1, it is firm to adsorb the light guide plate.

In other embodiments, the clamping mechanism 6 may also be a supporting plate 61 and two clamping arms, the two clamping arms are symmetrically installed on two sides of the supporting plate 61 along the length direction of the rack 1, and one sides of the clamping arms close to each other may contact with the side wall of the light guide plate, so as to clamp the light guide plate.

Referring to fig. 1 and 3, the frame 1 is provided with a horizontal moving mechanism 7 for driving the mounting frame 5 to reciprocate along the length of the frame 1. The horizontal movement mechanism 7 includes a second screw 71 and a second driving source 72, the second screw 71 is rotatably connected to the frame 1 along the length direction of the frame 1, and the mounting bracket 5 is threadedly connected to the second screw 71 along the length direction of the second screw 71. The second driving source 72 is used for driving the second screw 71 to rotate forward and backward, in this embodiment, the second driving source 72 adopts a servo motor, the servo motor is fixedly installed on the rack 1 through a bolt, and an output shaft of the servo motor is coaxially and fixedly connected with the second screw 71 through a coupler. When the mounting frame 5 is driven to reciprocate along the length direction of the rack 1, the second driving source 72 is started, the second driving source 72 drives the second screw rod 71 to rotate, the mounting frame 5 in threaded connection on the second screw rod 71 reciprocates along the length direction of the rack 1, and therefore the light guide plate clamped by the clamping mechanism 6 moves along the length direction of the rack 1, and the mounting frame 5 is convenient to move.

Referring to fig. 1 and 4, the aligning mechanisms 9 are disposed on two sides of the placing table 2 of the rack 1, each aligning mechanism 9 includes two fixing frames 91, the two fixing frames 91 are connected with a fixing plate 92 in a sliding manner along a length direction perpendicular to the rack 1, the fixing frames 91 are symmetrically welded on two sides of the rack 1 along the length direction perpendicular to the rack 1, and the fixing frames 91 are provided with driving devices 10 for driving the two fixing plates 92 to approach or separate from each other. The driving device 10 includes two cylinders 101, the two cylinders 101 are respectively welded to the two fixing frames 91, and piston rods of the two cylinders 101 are respectively welded to ends of the two fixing plates 92 away from each other. In order to improve the stability of the piston rod of the cylinder 101 during movement, a guiding telescopic rod 102 is welded above and below each cylinder 101, the guiding telescopic rods 102 can stretch along the horizontal direction, one end of each guiding telescopic rod 102 is welded with the fixing frame 91, and the other end of each guiding telescopic rod 102 is welded with the fixing plate 92. After the light guide plate that will treat processing is placed on placing platform 2 as the staff, start cylinder 101, the piston rod of cylinder 101 removes to the direction that is close to each other, drive the direction removal to the light guide plate with piston rod fixed connection's fixed plate 92, and make fixed plate 92 and place the light guide plate butt of treating processing on placing platform 2, the edge that makes the light guide plate of treating processing of placing on placing platform 2 is in same vertical plane, make things convenient for fixture 6 to carry out the centre gripping to the light guide plate and place the light guide plate on processing agency 4. In order to effectively prevent that fixed plate 92 from scraping the light guide plate of treating processing when fixed plate 92 contacts with the light guide plate of treating processing, two fixed plates 92 one side that are close to each other all are equipped with blotter 11, and in this embodiment, blotter 11 adopts the rubber pad, and the rubber pad bonds in fixed plate 92 one side that is close to another fixed plate 92, has improved the integrality of light guide plate.

Referring to fig. 1 and 5, the transmission mechanism 3 includes a driving roller 31, a driven roller 32, a transmission belt 33 and a third driving source 34, wherein the driving roller 31 and the driven roller 32 are rotatably mounted on the frame 1 at intervals along the length direction of the frame 1, and the transmission belt 33 is connected to the driving roller 31 and the driven roller 32. The third driving source 34 is used for driving the driving roller 31 to rotate forward and backward, the third driving source 34 adopts a three-phase asynchronous motor, the three-phase asynchronous motor is fixedly installed on the rack 1 through bolts, and an output shaft of the three-phase asynchronous motor is fixedly connected with the driving roller 31. In the present embodiment, the length of the conveyor belt 33 is greater than the length of the four light guide plates sequentially arranged in the horizontal direction. The clamping mechanism 6 can stack a plurality of processed light guide plates on the transmission belt 33 in sequence, when the light guide plates are stacked for one batch, a worker starts the third driving source 34, the third driving source drives the driving roller 31 to rotate, the transmission belt 33 is driven to move towards the direction far away from the rack 1 through the sliding friction between the driving roller 31 and the transmission belt 33, so that a plurality of processed light guide plates placed on the transmission belt 33 move towards the direction far away from the rack 1, when the transmission belt 33 moves to the position that the distance between the edge of the processed light guide plates close to the rack 1 and the edge of the transmission belt 33 close to the rack 1 is larger than the length of the light guide plates, the worker closes the third driving source 34, then the clamping mechanism 6 can stack a plurality of batches of processed light guide plates on the transmission belt 33 respectively, so that the worker can carry the plurality of batches of processed light guide plates at one time, the working intensity of workers is reduced.

In the present embodiment, the first driving source 82, the second driving source 72, and the third driving source 34 may be controlled to start and stop by using a PLC.

The implementation principle of the light guide plate bevel edge processing device in the embodiment of the application is as follows: when the light guide plate is beveled, a worker stacks a plurality of light guide plates to be processed on the placing table 2, then starts the horizontal moving mechanism 7 to make the pneumatic suction cup 62 be positioned right above the light guide plate to be processed, then starts the lifting mechanism 8 to make the pneumatic suction cup 62 clamp the light guide plate to be processed, then starts the lifting mechanism 8 to make the light guide plate to be processed move in the direction away from the frame 1, then starts the horizontal moving mechanism 7 to make the clamping mechanism 6 place the light guide plate to be processed on the processing mechanism 4, after the processing mechanism 4 processes the light guide plate to be processed, starts the lifting mechanism 8 to make the clamping mechanism 6 clamp the processed light guide plate, then starts the lifting mechanism 8 to move the processed light guide plate in the direction away from the frame 1, then starts the horizontal moving mechanism 7 to make the clamping mechanism 6 move in the direction close to the transmission mechanism 3, and place the light guide plate that has processed on transport mechanism 3, through the reciprocating motion of mounting bracket 5, fixture 6 piles up a plurality of light guide plates that have processed on transport mechanism 3, has saved the working process that the staff was manual to be placed and pile up the light guide plate, has improved light guide plate hypotenuse machining efficiency.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a light guide plate hypotenuse processingequipment which characterized in that: including frame (1), the one end of frame (1) is provided with places platform (2), the other end that are used for placing the light guide plate of treating processing and is provided with transmission device (3) that are used for piling up the light guide plate that has processed, frame (1) is located to be provided with between placing platform (2) and transmission device (3) and is used for carrying out processing agency (4) of hypotenuse processing to the light guide plate, frame (1) slides along the length direction of frame (1) and is provided with mounting bracket (5), be provided with fixture (6) that are used for the centre gripping light guide plate on mounting bracket (5), be provided with horizontal migration mechanism (7) that are used for ordering about mounting bracket (5) along the length reciprocating motion of frame (1) on frame (1).

2. The beveling apparatus for a light guide plate according to claim 1, wherein: fixture (6) are including backup pad (61) and pneumatic chuck (62), vertical direction sliding connection is followed on mounting bracket (5) in backup pad (61), pneumatic chuck (62) array sets up the one side that is close to frame (1) in backup pad (61), be provided with on mounting bracket (5) and be used for ordering about backup pad (61) along vertical direction reciprocating motion's elevating system (8).

3. The beveling apparatus for a light guide plate according to claim 2, wherein: the lifting mechanism (8) comprises a first screw (81) and a first driving source (82), the first screw (81) is rotatably connected to the mounting frame (5) along the vertical direction, the supporting plate (61) is in threaded connection with the first screw (81) along the length direction of the first screw (81), and the first driving source (82) is used for driving the first screw (81) to rotate forwards and backwards.

4. The beveling apparatus for a light guide plate according to claim 1, wherein: the horizontal moving mechanism (7) comprises a second screw rod (71) and a second driving source (72), the second screw rod (71) is rotatably connected to the rack (1) along the length direction of the rack (1), the mounting rack (5) is in threaded connection with the second screw rod (71) along the length direction of the second screw rod (71), and the second driving source (72) is used for driving the second screw rod (71) to rotate forwards and backwards.

5. The beveling apparatus for a light guide plate according to claim 1, wherein: transmission mechanism (3) are including initiative running roller (31), driven running roller (32), transmission band (33) and third driving source (34), length direction interval rotation along frame (1) is installed in frame (1) for initiative running roller (31) and driven running roller (32), transmission band (33) are connected on initiative running roller (31) and driven running roller (32), third driving source (34) are used for driving initiative running roller (31) just reversing.

6. The beveling apparatus for a light guide plate according to claim 1, wherein: frame (1) is located the both sides of placing platform (2) and is provided with alignment mechanism (9), alignment mechanism (9) include two mount (91), two mount (91) have a fixed plate (92) along the equal sliding connection of length direction of perpendicular to frame (1), mount (91) set up the both sides in frame (1) along the length direction symmetry of perpendicular to frame (1), be provided with drive arrangement (10) that are used for driving about two fixed plates (92) and are close to each other or keep away from on mount (91).

7. The beveling apparatus for a light guide plate according to claim 6, wherein: the driving device (10) comprises two air cylinders (101), the two air cylinders (101) are respectively and fixedly arranged on the two fixing frames (91), and piston rods of the two air cylinders (101) are respectively and fixedly connected with one ends, far away from the two fixing plates (92), of the two fixing frames.

8. The beveling apparatus for a light guide plate according to claim 6, wherein: and one sides of the two fixing plates (92) close to each other are provided with buffer pads (11).