Edge grinding device for liquid crystal display panel processing

Abstract

The application discloses a kind of edge grinding device for liquid crystal display panel processing in the field of display screen processing, including the fixed mechanism and edge grinding mechanism being arranged on workbench, the edge grinding mechanism includes feed unit and edge grinding unit;The edge grinding unit includes installation bin being installed on feed unit, the installation bin is provided with grinding disc and the height of the grinding disc is adjusted in vertical direction with the position adjusting assembly;The lower pressing unit includes height measuring assembly for measuring the overall height of the panel to be processed, the position adjusting assembly adjusts the contact position of the grinding disc and the panel according to the overall height of the panel to be processed.The application can automatically measure the panel stacking height during this processing when fixing the panel to be processed, and automatically adjust the position of the grinding disc through the position adjusting assembly during the next grinding, so that the friction area between the grinding disc and the liquid crystal display panel is different from the last time, avoiding uneven wear of the entire grinding disc, reducing the number of grinding disc finishing, prolonging the service life of the grinding disc, saving cost.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of display screen processing, in particular to an edge grinding device for liquid crystal display panel processing. BACKGROUND

[0002] A liquid crystal display device comprises a liquid crystal panel and a backlight module, wherein the liquid crystal panel needs to be cut and polished during the production process, and the polishing device in the prior art needs to polish the edges of the cut liquid crystal panel in sequence. When the existing polishing device faces a small-size liquid crystal display panel, the size of the grinding disc is often much larger than that of the liquid crystal display panel, so only a limited area of the grinding disc rubs against the liquid crystal display panel when the polishing device is working. Because the thickness of the liquid crystal panel itself is not uniform, and the number of stacked layers is not necessarily the same each time, the limited area changes according to the thickness of the stacked liquid crystal display panel. As the polishing proceeds, the wear area of the grinding disc is large or small, and some areas are not set to be worn, so the uneven wear of the grinding disc surface needs to be trimmed in time to avoid affecting the polishing quality. However, trimming the grinding disc requires trimming the entire disc surface of the grinding disc, so the trimming interval of the entire grinding disc is shortened, the service life of the grinding disc is reduced, and cost waste is caused. Therefore, a liquid crystal display panel processing edge grinding device is needed to solve the above problems. SUMMARY

[0003] The technical problem of the application is to provide a liquid crystal display panel processing edge grinding device, which can automatically measure the panel stacking height during the current processing when fixing the panel to be processed, and automatically adjust the position of the grinding disc through the positioning assembly during the next polishing, so that the friction area between the grinding disc and the liquid crystal display panel is different from the last time, the uneven wear of the entire grinding disc is avoided, the trimming frequency of the grinding disc is reduced, the service life of the grinding disc is prolonged, and cost is saved.

[0004] To achieve the above-mentioned purpose, the application provides the following technical scheme: a liquid crystal display panel processing edge grinding device, comprising a fixing mechanism and an edge grinding mechanism arranged on a workbench, the fixing mechanism comprises a support unit for horizontally supporting a panel to be processed and a pressing unit for fixing the panel to be processed, and the pressing unit is arranged directly above the support unit; the edge grinding mechanism comprises a feeding unit arranged beside the support unit and an edge grinding unit mounted on the feeding unit; the edge grinding unit comprises a mounting bin mounted on the feeding unit, and the mounting bin is provided with a grinding disc and a positioning assembly for vertically adjusting the height of the grinding disc; the pressing unit comprises a height measuring assembly for measuring the overall height of the panel to be processed, and the positioning assembly adjusts the contact position of the grinding disc and the panel according to the overall height of the panel to be processed.

[0005] As a further scheme of the present application, the pressing unit comprises a pressing shaft connected with a driving source, the driving source drives the pressing shaft to stretch and rotate; the driving source is fixedly installed on a supporting arm, and the supporting arm is fixedly installed on the workbench; a fixed disc is fixedly installed on the pressing shaft, and a sliding disc is keyed connected and installed on the pressing shaft and arranged below the fixed disc; a pressing column is arranged on the sliding disc, and a pressing disc for pressing the panel to be processed is fixedly installed at the lower end of the pressing column; and a first spring is arranged between the fixed disc and the sliding disc.

[0006] As a further scheme of the present application, the sliding disc is circumferentially spaced apart with a radial sliding groove, a sliding block is slidingly installed on the radial sliding groove, and the pressing column is fixedly installed on the sliding block; and the sliding block and the fixed disc are hinged through a connecting rod.

[0007] As a further scheme of the present application, the pressing disc is provided with a pressure sensor.

[0008] As a further scheme of the present application, the height measuring assembly comprises a first gear wheel rotatably installed on the fixed disc, a first sliding rod is arranged on the side of the first gear wheel, the first sliding rod is vertically slidingly installed on the fixed disc, and the bottom end of the first sliding rod is fixedly connected to the sliding disc; a pawl is arranged on the first sliding rod, the pawl drives the first gear wheel to rotate in one direction, a second gear wheel is also rotatably installed on the fixed disc, and the second gear wheel is engaged with the first gear wheel.

[0009] As a further scheme of the present application, the position adjusting assembly comprises a mounting base vertically fixedly installed on the bottom surface of the mounting cavity, a threaded rod is vertically rotatably installed on the mounting base, a driving power source is connected with the threaded rod, a threaded sleeve is threadedly installed on the threaded rod, a moving block is rotatably installed on the threaded sleeve, and the grinding disc is arranged on the moving block; a clamping groove is circumferentially spaced apart on the threaded sleeve, a clamping plate is slidingly installed on the moving block, and the clamping plate locks the threaded sleeve and the moving block when the clamping plate is inserted into the clamping groove.

[0010] As a further scheme of the present application, a sliding column is fixedly installed on the clamping plate, a horizontal sliding plate is slidingly installed on the moving block, a V-shaped sliding groove is formed in the horizontal sliding plate, and the sliding column slides in the V-shaped sliding groove; when the sliding column is located at the V-shaped bottom of the V-shaped sliding groove, the clamping plate is inserted into the clamping groove, the threaded sleeve and the moving block are locked; when the sliding column is located at the V-shaped upper portion of the V-shaped sliding groove, the clamping plate is separated from the clamping groove, and the threaded sleeve and the moving block are unlocked; a second spring is arranged between the clamping plate and the moving block, and the second spring is used to drive the sliding column to move to the V-shaped bottom of the V-shaped sliding groove.

[0011] As a further scheme of the present application, a first rack is vertically slidably mounted on the mounting base, a second rack is fixedly mounted on the upper end of the first rack, and the second rack has the same module as the second gear; a limiting plate is fixedly mounted on the lower end of the first rack, and when the clamping plate moves to the side of the limiting plate, the limiting plate drives the clamping plate to move, so that the sliding column moves to the V-shaped upper part of the V-shaped sliding groove; a limiting assembly for limiting the downward movement of the first rack is further arranged on the mounting base.

[0012] As a further scheme of the present application, the limiting assembly comprises a limiting wedge slidably mounted on the mounting base, the limiting wedge is used to limit the downward movement of the first rack; a third spring is arranged between the limiting wedge and the mounting base; a limiting hole is formed in the limiting wedge, a limiting column is vertically slidably mounted on the mounting base, when the limiting plate drives the limiting column to insert into the limiting hole, the third spring is in a compressed state, and the limiting wedge does not limit the downward movement of the first rack; a reset plate is further fixedly mounted on the first rack, and the reset plate is used to drive the limiting column to move away from the limiting hole.

[0013] As a further scheme of the present application, a tool withdrawal inclined surface is fixedly mounted on the upper end face of the mounting bin, the tool withdrawal inclined surface is used to clean the waste on the grinding disc when the grinding disc passes, and the upper end face of the mounting bin and the supporting face of the supporting unit are located in the same plane.

[0014] Compared with the prior art, the present application has the following beneficial effects:

[0015] 1. The present application can automatically measure the stacking height of the panel to be processed during the processing, and automatically adjust the position of the grinding disc through the positioning assembly during the next grinding, so that the friction area between the grinding disc and the liquid crystal display panel is different from the last time, the uneven wear of the grinding disc is avoided, the number of grinding disc trimming is reduced, the service life of the grinding disc is prolonged, and the cost is saved.

[0016] 2. The present application utilizes the reset action of the grinding disc after each processing, when the grinding disc moves downward and shrinks into the mounting bin, the grinding disc slightly rubs against the tool withdrawal inclined surface arranged on the upper end face of the mounting bin, the tool withdrawal inclined surface cleans the debris adhered to the grinding disc, ensures complete cleaning, and further blows the debris on the tool withdrawal inclined surface along the tool withdrawal inclined surface into the collecting box, so that the complete cleaning is ensured and the environment is not polluted. In addition, the upper end face of the mounting bin can be fed below the panel to be processed, so as to provide support for the panel to be processed, avoid the panel to be processed from shaking during the edge grinding, and affect the edge grinding effect. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed for the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0018] Figure 1 Fig. 1 is a structural schematic diagram of an edge grinding device for a liquid crystal display panel;

[0019] Figure 2 Fig. 2 is a structural schematic diagram of the edge grinding device in a half section;

[0020] Figure 3 Fig. 3 is a structural schematic diagram of a down unit of the present application;

[0021] Figure 4 Fig. 4 is a partial enlarged schematic diagram of part A in the present application; Figure 3

[0022] Figure 5 Fig. 5 is a structural schematic diagram of an edge grinding unit of the present application;

[0023] Figure 6 Fig. 6 is a structural schematic diagram of the edge grinding unit of the present application without a mounting bin;

[0024] Figure 7 Fig. 7 is a structural schematic diagram of a position adjusting assembly of the present application;

[0025] Figure 8 Fig. 8 is a partial enlarged schematic diagram of part B in the present application; Figure 7

[0026] Fig. 9 is a structural schematic diagram of a moving block in the position adjusting assembly in a half section; Figure 9

[0027] Fig. 10 is a structural schematic diagram of a horizontal sliding plate, a screw sleeve and a clamping plate of the present application; Figure 10

[0028] Fig. 11 is a structural schematic diagram of a limiting assembly of the present application. Figure 11 In the drawings, the components represented by the respective reference numerals are listed as follows:

[0029]

[0030] ​​11 - workbench, 12 - support unit, 13 - pressing unit, 14 - feeding unit, 15 - edging unit, 16 - mounting bin, 17 - grinding disc, 21 - pressing shaft, 22 - driving source, 23 - support arm, 24 - fixed disc, 25 - sliding disc, 26 - pressing column, 27 - pressing disc, 28 - first spring, 31 - radial sliding groove, 32 - sliding block, 33 - connecting rod, 34 - first gear, 35 - first sliding rod, 36 - pawl, 37 - second gear, 41 - mounting base, 42 - threaded rod, 43 - threaded sleeve, 44 - moving block, 45 - clamping groove, 46 - clamping plate, 47 - horizontal sliding plate, 51 - sliding column, 52 - V-shaped sliding groove, 53 - second spring, 61 - first rack, 62 - second rack, 63 - limiting plate, 64 - limiting wedge, 65 - third spring, 66 - limiting hole, 67 - limiting column, 68 - reset plate, 71 - tool withdrawal inclined surface. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0032] Please refer to Figures 1-11 The present application provides an edging device for processing liquid crystal display panel, which comprises a fixing mechanism and an edging mechanism arranged on a workbench 11. The fixing mechanism comprises a support unit 12 for horizontally supporting a panel to be processed and a pressing unit 13 for fixing the panel to be processed, and the pressing unit 13 is arranged directly above the support unit 12. The edging mechanism comprises a feeding unit 14 arranged beside the support unit 12 and an edging unit 15 mounted on the feeding unit 14. The edging unit 15 comprises a mounting bin 16 mounted on the feeding unit 14, and the mounting bin 16 is provided with a grinding disc 17 and a position adjusting assembly for vertically adjusting the height of the grinding disc 17. The pressing unit 13 comprises a height measuring assembly for measuring the overall height of the panel to be processed, and the position adjusting assembly adjusts the contact position of the grinding disc 17 and the panel according to the overall height of the panel to be processed.

[0033] As Figure 1 , Figure 2As shown, the working procedure of the present application is as follows: firstly, the to-be-processed panels are stacked and placed on the support unit 12 in a central symmetry, and then the pressing unit 13 is pressed to fix the to-be-processed panels on the support unit 12, and at the same time, the pressing unit 13 measures the stacking height of the to-be-processed panels by the height measuring assembly. Then, the height of the grinding disc 17 is adjusted by the positioning assembly based on the height of the grinding disc 17 in the last working process and the stacking height of the to-be-processed panels measured by the height measuring assembly, so that the friction area of the grinding disc 17 and the liquid crystal display panel is different from that in the last working process. Then, the grinding disc 17 is automatically extended to contact the to-be-processed panels for edge grinding. After several times of edge grinding, the height of the grinding disc 17 is adjusted by the positioning assembly to the predetermined limit position, and then the grinding disc 17 is reset to the bottom end, and the above process is repeated. The present application can automatically measure the stacking height of the to-be-processed panels in the working process, and automatically adjust the position of the grinding disc 17 by the positioning assembly in the next grinding process, so that the friction area of the grinding disc 17 and the liquid crystal display panel is different from that in the last working process, thereby avoiding uneven wear of the grinding disc 17, reducing the number of grinding disc 17 trimming, prolonging the service life of the grinding disc 17, and saving cost.

[0034] As a further scheme of the present application, the pressing unit 13 comprises a pressing shaft 21 connected with a driving source 22, and the driving source 22 drives the pressing shaft 21 to extend and retract and rotate; the driving source 22 is fixedly installed on a support arm 23, and the support arm 23 is fixedly installed on the workbench 11; a fixed disc 24 is fixedly installed on the pressing shaft 21, a sliding disc 25 is connected with the pressing shaft 21 by a key, and the sliding disc 25 is arranged below the fixed disc 24; a pressing column 26 is arranged on the sliding disc 25, a pressing disc 27 for pressing the to-be-processed panels is fixedly installed on the lower end of the pressing column 26, and a first spring 28 is arranged between the fixed disc 24 and the sliding disc 25.

[0035] As a further scheme of the present application, the sliding disc 25 is spaced apart in a circumferential direction and is provided with a radial sliding groove 31, a sliding block 32 is slidingly installed on the radial sliding groove 31, the pressing column 26 is fixedly installed on the sliding block 32, and the sliding block 32 and the fixed disc 24 are connected by a connecting rod 33.

[0036] As a further scheme of the present application, the pressing disc 27 is provided with a pressure sensor.

[0037] The working process of the pressing unit 13 of the present application is as follows: Figure 2 、 Figure 3As shown, in operation, the driving source 22 drives the pressing shaft 21 to press down, and the pressing shaft 21 drives the fixed disc 24 and the sliding disc 25 to move vertically downward. When the pressing column 26 and the pressing disc 27 on the sliding disc 25 contact the panel to be processed, the pressing shaft 21 continues to drive the fixed disc 24 to press down, but the sliding disc 25 is static due to the reaction force of the panel to be processed, so that the relative distance between the sliding disc 25 and the fixed disc 24 is reduced, and the first spring 28 is compressed. As shown, Figure 3 As shown, when the relative distance between the sliding disc 25 and the fixed disc 24 is reduced, the connecting rod 33 drives the sliding block 32 to move outward on the radial sliding groove 31, adjusts the pressing position of the pressing disc 27, and moves the pressing disc 27 to the edge direction of the panel to be processed, so that the panel to be processed is uniformly stressed, and the panel to be processed is conveniently and better fixed. In the embodiment, after the pressing shaft 21 is pressed down, the external pneumatic unit pressurizes and presses the panel to be processed through the pressing disc 27 until the pressure sensor arranged on the pressing disc 27 reaches a specified value, and the pressing operation is completed. The driving source 22 drives the pressing shaft 21 and the supporting unit 12 to rotate at the same time to adjust the position of the panel to be processed, so that the four edges of the panel to be processed can be polished by the polishing disc 17.

[0038] As a further scheme of the present application, the height measuring assembly comprises a first gear 34 rotatably arranged on the fixed disc 24, a first sliding rod 35 arranged beside the first gear 34, the first sliding rod 35 being vertically slidably arranged on the fixed disc 24, and the bottom end of the first sliding rod 35 being fixedly connected to the sliding disc 25; a ratchet 36 is arranged on the first sliding rod 35, the ratchet 36 drives the first gear 34 to rotate in one direction, and a second gear 37 is also rotatably arranged on the fixed disc 24, and the second gear 37 is engaged with the first gear 34.

[0039] The present application synchronously measures the stacking height of the panel to be processed when the pressing unit 13 fixes the panel to be processed. The specific working process is as follows Figure 3 、 Figure 4As shown, in the working process of the present application, when the pressing shaft 21 drives the pressing disc 27 to clamp the panel to be processed, the distance of the pressing shaft 21 is fixed, the distance between the sliding disc 25 and the fixed disc 24 is reduced, and the sliding disc 25 vertically slides upward relative to the fixed disc 24, wherein the reduced distance is the stacking height of the panel to be processed. The first sliding rod 35 is fixedly installed on the sliding disc 25 and is vertically slidably installed on the fixed disc 24. Therefore, when the distance between the sliding disc 25 and the fixed disc 24 is reduced, the first sliding rod 35 moves upward relative to the fixed disc 24 by a corresponding distance, the first sliding rod 35 drives the first gear 34 to rotate through the pawl 36, and the first gear 34 drives the second gear 37 to rotate. In the embodiment, the first gear 34 and the second gear 37 have the same number of teeth, so the rotation amplitudes of the first gear 34 and the second gear 37 are also the same. When the single polishing is completed, the sliding disc 25 is reset under the restoring force of the first spring 28, the first sliding rod 35 is reset, the pawl 36 is reset and does not drive the first gear 34 to rotate, so the first gear 34 still maintains the original rotation amplitude, and in the next polishing, the first gear 34 can rotate again on the basis of maintaining the original rotation amplitude, and the stacking height of the panel to be processed is accumulated. The present application synchronously measures the stacking height of the panel to be processed when the pressing unit 13 fixes the panel to be processed, converts the stacking height of the panel to be processed into the rotation amplitude of the second gear 37, and does not need additional measurement, so the structure is simple and the use is convenient.

[0040] As a further scheme of the present application, the position adjusting assembly comprises a mounting base 41 vertically fixedly installed on the bottom surface of the mounting cavity 16, a threaded rod 42 vertically rotatably installed on the mounting base 41, an external driving power source connected to the threaded rod 42, a screw sleeve 43 threadedly installed on the threaded rod 42, a moving block 44 rotatably installed on the screw sleeve 43, and the grinding disc 17 arranged on the moving block 44. A plurality of clamping grooves 45 are spaced apart in the circumferential direction of the screw sleeve 43, and a clamping plate 46 is slidably installed on the moving block 44. When the clamping plate 46 is inserted into the clamping groove 45, the screw sleeve 43 and the moving block 44 are locked.

[0041] Figure 9 As shown, in the working process of the present application, the clamping plate 46 is inserted into the clamping groove 45 on the screw sleeve 43 to lock the screw sleeve 43 and the moving block 44. Figure 6 As shown, the external driving power source drives the threaded rod 42 to rotate on the mounting base 41, and the threaded rod 42 drives the moving block 44 to slide along the extension direction of the threaded rod 42 through the screw sleeve 43. Because the moving block 44 is provided with the grinding disc 17, when the moving block 44 slides along the extension direction of the threaded rod 42, the grinding disc 17 moves upward along the extension direction of the threaded rod 42. Figure 5 As shown, the moving block 44 drives the grinding disc 17 to move upward to adjust the height.

[0042] As a further scheme of the present application, the clamping plate 46 is fixedly installed with a sliding column 51, the moving block 44 is slidingly installed with a horizontal sliding plate 47, the horizontal sliding plate 47 is provided with a V-shaped sliding groove 52, and the sliding column 51 slides in the V-shaped sliding groove 52; when the sliding column 51 is located at the V-shaped bottom of the V-shaped sliding groove 52, the clamping plate 46 is inserted into the clamping groove 45, and the screw sleeve 43 is locked with the moving block 44; when the sliding column 51 is located at the V-shaped upper part of the V-shaped sliding groove 52, the clamping plate 46 is separated from the clamping groove 45, and the screw sleeve 43 is unlocked with the moving block 44; the second spring 53 is arranged between the clamping plate 46 and the moving block 44, and the second spring 53 is used to drive the sliding column 51 to move to the V-shaped bottom of the V-shaped sliding groove 52.

[0043] As shown in Figure 9 , Figure 10 , the specific process of locking and unlocking the moving block 44 and the screw sleeve 43 in the present application is as follows: when being located at the position shown in Figure 10 , the sliding column 51 on the clamping plate 46 is located at the bottom of the V-shaped sliding groove 52 on the horizontal sliding plate 47, at this time, the clamping plate 46 is inserted into the clamping groove 45 arranged circumferentially on the screw sleeve 43, as shown in Figure 9 , because the clamping plate 46 is slidingly installed vertically on the moving block 44, and the two do not have the freedom degree in the rotation direction, when the clamping plate 46 is inserted into the clamping groove 45 on the screw sleeve 43, the freedom degree of the screw sleeve 43 in the rotation direction is limited, and the screw sleeve 43 is locked with the moving block 44; when being unlocked, as shown in Figure 9 , an external force (in this embodiment, the limiting plate 63) drives the horizontal sliding plate 47 to move horizontally, as shown in Figure 10 , because the sliding column 51 is slidingly installed in the V-shaped sliding groove 52 on the horizontal sliding plate 47, when the horizontal sliding plate 47 moves, the sliding column 51 moves from the bottom of the V-shaped sliding groove 52 to the upper part of the V-shaped sliding groove 52, that is, the clamping plate 46 is driven to move vertically upward, the clamping plate 46 moves vertically upward to separate from the clamping groove 45 on the screw sleeve 43, so that the screw sleeve 43 is unlocked with the moving block 44, and the screw sleeve 43 can rotate freely in the moving block 44. The second spring 53 is arranged to reinsert the clamping plate 46 into the clamping groove 45 under the restoring force of the second spring 53 when the horizontal sliding plate 47 loses the external force, to lock the moving block 44 and the screw sleeve 43 again, and to drive the horizontal sliding plate 47 to reset.

[0044] As a further scheme of the present application, the first rack 61 is vertically slidably installed on the mounting base 41, the upper end of the first rack 61 is fixedly installed with the second rack 62, the second rack 62 is of the same modulus as the second gear 37; the lower end of the first rack 61 is fixedly installed with the limiting plate 63, when the clamping plate 46 moves to the side of the limiting plate 63, the limiting plate 63 drives the clamping plate 46 to move, so that the sliding column 51 moves to the V-shaped upper portion of the V-shaped chute 52; the mounting base 41 is further provided with a limiting assembly for limiting the downward movement of the first rack 61.

[0045] The present application needs to adjust the contact position of the grinding disc 17 and the panel to be processed according to the overall height of the panel to be processed, so that the friction area of the grinding disc 17 and the liquid crystal display panel is different from the last friction area. The specific working process is as follows: first, the feeding unit 14 feeds the installation bin 16, so that the second rack 62 is engaged with the second gear 37. Then according to the above description, the height measuring assembly is used to measure the stacking height of the clamped and fixed panel to be processed, and the stacking height is converted into the rotation amplitude of the second gear 37. As shown in Figure 2 The second gear 37 is engaged with the second rack 62, so the second gear 37 drives the second rack 62 to move vertically upward, and the moving distance of the second rack 62 is the stacking height of the panel to be processed. Because the second rack 62 is fixedly installed on the first rack 61, and the bottom end of the first rack 61 is fixedly installed with the limiting plate 63, so the limiting plate 63 moves upward by the same distance. At this time, the external power source drives the threaded rod 42 to rotate, as shown in Figure 6As shown, the card plate 46 is inserted in the card slot 45 at this time, and the moving block 44 is locked with the screw sleeve 43. Therefore, the threaded rod 42 rotates to drive the moving block 44 to move vertically upward, and the grinding disc 17 installed on the moving block 44 moves to increase the height of the grinding disc 17, and the grinding disc 17 moves out of the installation bin 16. When the moving block 44 moves to the side of the limiting plate 63, the limiting plate 63 contacts the horizontal sliding plate 47 on the moving block 44 to drive the horizontal sliding plate 47 to move. As described above, the movement of the horizontal sliding plate 47 drives the card plate 46 to move away from the card slot 45, so that the screw sleeve 43 is unlocked with the moving block 44. Therefore, the rotation of the threaded rod 42 only drives the screw sleeve 43 to rotate in the moving block 44, and the moving block 44 does not move. At this time, the height of the moving block 44 is the stacking height of the panel to be processed, and the distance of the grinding disc 17 exposed from the installation bin 16 is the same as the stacking height of the panel to be processed. Then, the grinding disc 17 relatively moves in the installation bin 16 to automatically feed, and the fixed panel to be processed is processed. The grinding disc 17 in the present application can automatically extend and retract in the installation bin 16 by a displacement amount, and can be fed and retracted to avoid interference. After single processing is completed, the lower pressing unit 13 is reset, and the processed panel is taken away; the feeding unit 14 drives the installation bin 16 to retreat, and the second rack 62 is disengaged with the second gear 37; at the same time, the external power supply drives the threaded rod 42 to reverse, and the moving block 44 drives the grinding disc 17 to reset to the initial position, i.e., the bottom of the installation bin 16, and the grinding disc 17 enters the installation bin 16. The grinding disc 17 in the installation bin 16 automatically retracts to avoid interference and returns to the initial state. Next time, the feeding unit 14 feeds the installation bin 16 again, so that the second rack 62 is engaged with the second gear 37, the lower pressing unit 13 fixes the panel to be processed next time, the height measuring assembly measures the stacking height of the panel to be processed next time, the sliding disc 25 moves upward relative to the fixed disc 24 again, the first sliding rod 35 moves upward relative to the fixed disc 24, the pawl 36 on the first sliding rod 35 drives the first gear 34 to rotate again, the first gear 34 drives the second gear 37 to rotate, and it is noted that the second gear 37 rotates on the basis of retaining the rotation amplitude of the last time. The second gear 37 rotates to increase the height of the second rack 62, and the second rack 62 drives the limiting plate 63 on the first rack 61 to move upward on the basis of retaining the height of the last time. When the pressing is completed, the height of the limiting plate 63 is the stacking height of the panels accumulated in the two measurements at this time, and then the external power supply drives the threaded rod 42 to rotate, and the screw drives the moving block 44 to move to the side of the limiting plate 63. The grinding disc 17 is driven by the moving block 44 to move upward and expose the installation bin 16, and the height of the grinding disc 17 exposed is the height sum of the two panels to be processed, and the panel to be processed this time corresponds to the new friction area of the grinding disc 17, which is different from the friction area of the last time, so as to avoid uneven wear of the whole grinding disc 17, reduce the number of grinding disc 17 trimming, prolong the service life of the grinding disc 17, save costs.

[0046] As a further embodiment of the present invention, the limiting component includes a limiting wedge 64 slidably mounted on the mounting base 41, the limiting wedge 64 being used to restrict the downward movement of the first rack 61; a third spring 65 is provided between the limiting wedge 64 and the mounting base 41; a limiting hole 66 is opened on the limiting wedge 64, and a limiting post 67 is vertically slidably mounted on the mounting base 41; when the limiting plate 63 drives the limiting post 67 to insert into the limiting hole 66, the third spring 65 is in a compressed state, and the limiting wedge 64 does not restrict the downward movement of the first rack 61; a reset plate 68 is also fixedly mounted on the first rack 61, the reset plate 68 being used to drive the limiting post 67 away from the limiting hole 66.

[0047] Because the dimensions of the grinding disc 17 are fixed and its height is limited, it cannot be raised further after the entire grinding disc 17 is fully exposed from the mounting chamber 16, and the height of the limiting plate 63 also reaches its limit. At this point, the limiting rod needs to be reset and the process restarted. Therefore, as Figure 6 , Figure 7 , Figure 8 As shown, as the panel to be processed continues to be processed, the height of the limiting plate 63 also increases continuously. When the limiting rod is raised to the top of the mounting base 41, it reaches its limit height, as shown. Figure 8 , Figure 11 As shown, the limiting rod contacts the limiting post 67 and drives the limiting post 67 to rise. Figure 8 (As shown on the left), at this time, the limiting wedge 64 is just lifted up by the first rack 61 and is in a retracted state. The limiting pin 67 is inserted into the limiting hole 66, preventing the limiting wedge 64 from resetting. Thus, the limiting wedge 64 loses its unidirectional limiting effect on the first rack 61, and the first rack 61 moves down and resets to its initial position under its own weight. When the first rack 61 resets to its initial position, as... Figure 6 As shown, the reset plate 68 on the first rack 61 moves to the side of the limiting post 67 and drives the limiting post 67 away from the limiting hole 66. In this way, the limiting wedge 64 is reset under the restoring force of the third spring 65, and continues to limit the first rack 61 in one direction. The function of the limiting wedge 64 is to prevent the first rack 61, on which the second rack 62 is mounted, from moving downward under its own weight after the second gear 37 disengages from the second rack 62, thus changing the height of the limiting plate 63.

[0048] As a further embodiment of the present invention, a retraction slope 71 is fixedly installed on the upper end face of the mounting chamber 16. The retraction slope 71 is used to clean the waste on the grinding disc 17 when the grinding disc 17 passes by. The upper end face of the mounting chamber 16 and the support surface of the support unit 12 are located on the same plane.

[0049] like Figure 5As shown, because the edge grinding will have debris generated may be contaminated on the grinding disc 17 need to clean, wind blowing can not guarantee completely clean, washing will make the grinding disc 17 on the water is rotated and splashed, affect the working environment. The present application utilizes the reset action after each processing of the grinding disc 17, when the grinding disc 17 moves down into the installation bin 16, the grinding disc 17 and the tool withdrawal slope 71 set on the upper end surface of the installation bin 16 gently rub, the tool withdrawal slope 71 clean the debris on the grinding disc 17, ensure complete cleaning, and then use the wind blowing to blow the debris on the tool withdrawal slope 71 along the tool withdrawal slope 71 into the collection box, ensure complete cleaning while not polluting the environment. The upper end surface of the installation bin 16 and the supporting surface of the supporting unit 12 are set on the same plane in order to provide support to the workpiece during the grinding process of the grinding disc 17, as shown in Figure 2 the upper end surface of the installation bin 16 can be fed below the workpiece, providing support to the workpiece, avoiding the workpiece from shaking during the edge grinding, and affecting the edge grinding effect.

Claims

1. A grinding device for processing liquid crystal display panels, characterized in that: The application relates to an edge grinding device for a workbench (11), which comprises a fixing mechanism arranged on the workbench (11) and an edge grinding mechanism, the fixing mechanism comprises a supporting unit (12) for horizontally supporting a panel to be processed and a pressing unit (13) for fixing the panel to be processed, the pressing unit (13) is arranged directly above the supporting unit (12); the edge grinding mechanism comprises a feeding unit (14) arranged on the side of the supporting unit (12) and an edge grinding unit (15) mounted on the feeding unit (14); the edge grinding unit (15) comprises a mounting bin (16) mounted on the feeding unit (14), the mounting bin (16) is internally provided with a grinding disc (17) and a position adjusting assembly for vertically adjusting the height of the grinding disc (17); the pressing unit (13) comprises a height measuring assembly for measuring the overall height of the panel to be processed, and the position adjusting assembly adjusts the contact position of the grinding disc (17) and the panel according to the overall height of the panel to be processed. The pressing unit (13) comprises a pressing shaft (21) externally connected with a driving source (22), the driving source (22) drives the pressing shaft (21) to stretch and retract and rotate; the driving source (22) is fixedly mounted on a supporting arm (23), and the supporting arm (23) is fixedly mounted on the workbench (11); A fixing disc (24) is fixedly mounted on the pressing shaft (21), a sliding disc (25) is connected with the pressing shaft (21) through a key, and the sliding disc (25) is arranged below the fixing disc (24); a pressing column (26) is arranged on the sliding disc (25), a pressing disc (27) for pressing the panel to be processed is fixedly mounted on the lower end of the pressing column (26), and a first spring (28) is arranged between the fixing disc (24) and the sliding disc (25); The height measuring assembly comprises a first gear (34) rotatably mounted on the fixing disc (24), a first sliding rod (35) is arranged on the side of the first gear (34), the first sliding rod (35) is vertically slidably mounted on the fixing disc (24), and the bottom end of the first sliding rod (35) is fixedly connected to the sliding disc (25); a ratchet claw (36) is arranged on the first sliding rod (35), the ratchet claw (36) drives the first gear (34) to rotate in one direction, and a second gear (37) is also rotatably mounted on the fixing disc (24) and engages with the first gear (34); The position adjusting assembly comprises a mounting base (41) vertically fixedly mounted on the bottom surface of the mounting bin (16), a threaded rod (42) is vertically rotatably mounted on the mounting base (41), the threaded rod (42) is externally connected with a driving power source, a screw sleeve (43) is threadedly mounted on the threaded rod (42), a moving block (44) is rotatably mounted on the screw sleeve (43), and the grinding disc (17) is arranged on the moving block (44). The screw sleeve (43) is spaced apart in the circumference direction and has a clamping groove (45), the moving block (44) is slidably installed with a clamping plate (46), and the clamping plate (46) is inserted into the clamping groove (45) to lock the screw sleeve (43) and the moving block (44); The clamping plate (46) is fixedly installed with a sliding column (51), the moving block (44) is slidably installed with a horizontal sliding plate (47), the horizontal sliding plate (47) is provided with a V-shaped sliding groove (52), and the sliding column (51) slides in the V-shaped sliding groove (52); when the sliding column (51) is located at the V-shaped bottom of the V-shaped sliding groove (52), the clamping plate (46) is inserted into the clamping groove (45), the screw sleeve (43) is locked with the moving block (44); when the sliding column (51) is located at the V-shaped upper part of the V-shaped sliding groove (52), the clamping plate (46) is away from the clamping groove (45), and the screw sleeve (43) is unlocked with the moving block (44); the second spring (53) is arranged between the clamping plate (46) and the moving block (44), and the second spring (53) is used for driving the sliding column (51) to move to the V-shaped bottom of the V-shaped sliding groove (52); The first rack (61) is vertically slidably installed on the mounting base (41), the upper end of the first rack (61) is fixedly installed with a second rack (62), the second rack (62) has the same module as the second gear (37), and the lower end of the first rack (61) is fixedly installed with a limiting plate (63); when the clamping plate (46) moves to the side of the limiting plate (63), the limiting plate (63) drives the clamping plate (46) to move, so that the sliding column (51) moves to the V-shaped upper part of the V-shaped sliding groove (52); the mounting base (41) is also provided with a limiting assembly for limiting the downward movement of the first rack (61).

2. The edge grinding device for processing liquid crystal display panel according to claim 1, characterized in that: The sliding disc (25) is spaced apart in the circumference direction and has a radial sliding groove (31), the radial sliding groove (31) is slidably installed with a sliding block (32), the pressing column (26) is fixedly installed on the sliding block (32), and the sliding block (32) and the fixed disc (24) are hinged through a connecting rod (33).

3. The edging device for processing liquid crystal display panel according to claim 2, characterized in that: The pressing disc (27) is provided with a pressure sensor.

4. The edging device for processing liquid crystal display panel according to claim 1, characterized in that: The limiting assembly comprises a limiting wedge (64) slidingly installed on the mounting base (41), and the limiting wedge (64) is used for limiting the downward movement of the first rack (61); a third spring (65) is arranged between the limiting wedge (64) and the mounting base (41); a limiting hole (66) is formed in the limiting wedge (64), and a limiting column (67) is slidingly installed on the mounting base (41) in a vertical manner; when the limiting column (67) is driven by the limiting plate (63) to be inserted into the limiting hole (66), the third spring (65) is in a compressed state, and the limiting wedge (64) does not limit the downward movement of the first rack (61); and a reset plate (68) is further fixedly installed on the first rack (61), and the reset plate (68) is used for driving the limiting column (67) to move away from the limiting hole (66).

5. The edging device for processing liquid crystal display panel according to claim 4, characterized in that: An unthreading slope (71) is fixedly installed on the upper end face of the mounting bin (16), and the unthreading slope (71) is used for cleaning the waste on the grinding disc (17) when the grinding disc (17) passes; and the upper end face of the mounting bin (16) and the supporting face of the supporting unit (12) are located in the same plane.

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