Full-automatic grinding mechanism for television shell

Abstract

The invention belongs to the technical field of grinding equipment, and discloses a television shell full-automatic grinding mechanism which comprises a grinding table, a multi-axis mechanical arm and a grinding head module. The polishing table is used for supporting and fixing a television shell to be polished; the multi-axis mechanical arm is arranged on one side of the grinding table. The grinding head module is arranged at the tail end of the multi-axis mechanical arm; the grinding head module comprises a telescopic frame and a rotating frame, a main roller and a driving roller are rotationally installed at the two ends of the telescopic frame respectively, a guide roller is rotationally installed at the end of the rotating frame, the main roller, the driving roller and the guide roller are sleeved with a grinding belt, and the rotating frame can rotate relative to the telescopic frame. The rotating stand swings between the vertical station and the parallel station; when the rotating frame rotates to the vertical station, the rotating frame is perpendicular to the telescopic frame, and the polishing belt is opened to the maximum angle at the main roller; and when the rotating frame rotates to the parallel station, the rotating frame is parallel to the telescopic frame, and the grinding belt shrinks to the minimum angle at the main roller.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of polishing equipment, and particularly relates to a full-automatic polishing mechanism for a television shell. BACKGROUND

[0002] A polishing equipment is a machine tool device for grinding workpiece surfaces by using a grinding tool. After a television shell is injection molded, polishing equipment is usually used to polish the surface of the television shell in order to improve the flatness of the surface of the television shell.

[0003] In the prior art, the grinding head assembly for machining and polishing is mostly a fixed structure of a grinding disc. The surface of the television shell is mostly a complex surface structure including a plane, a curved surface, a groove and the like. Obviously, the fixed grinding disc cannot be well adapted to and efficiently perform the polishing of the complex surface. Therefore, in the actual polishing process, the grinding head of various specifications needs to be replaced according to different polishing positions, which reduces the work efficiency. SUMMARY

[0004] In view of this, the present application aims to provide a full-automatic polishing mechanism for a television shell.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme. A full-automatic polishing mechanism for a television shell comprises: a polishing table for supporting and fixing a television shell to be polished; a multi-axis mechanical arm arranged on one side of the polishing table; a grinding head module arranged at the end of the multi-axis mechanical arm; wherein the grinding head module comprises a telescopic frame and a rotating frame, the telescopic frame has a main roller and a driving roller rotatably installed at both ends thereof, the rotating frame has a guide roller rotatably installed at the end thereof, and the main roller, the driving roller and the guide roller are externally sleeved with a polishing belt, and the rotating frame is capable of rotating relative to the telescopic frame so as to swing the rotating frame between a vertical working position and a parallel working position; when the rotating frame is rotated to the vertical working position, the rotating frame is perpendicular to the telescopic frame, and the polishing belt is opened to the maximum angle at the main roller; when the rotating frame is rotated to the parallel working position, the rotating frame is parallel to the telescopic frame, and the polishing belt is contracted to the minimum angle at the main roller.

[0006] Preferably, the telescopic frame comprises a hollow fixed frame and first and second adjusting frames which are respectively slidably connected to both ends of the hollow fixed frame, the rotating frame is rotatably installed in the hollow cavity of the hollow fixed frame, the main roller is rotatably installed on the first adjusting frame, the driving roller is rotatably installed on the second adjusting frame, and a driving motor for driving the driving roller to rotate is further arranged on the second adjusting frame.

[0007] Preferably, a cylinder and an extension track are connected between the first adjusting frame and the hollow fixing frame, and a tension spring is connected between the second adjusting frame and the hollow fixing frame.

[0008] Preferably, the grinding head module further comprises a grinding head seat, the hollow fixing frame is fixed on the grinding head seat, and a rotary motor for driving the rotating frame to rotate is embedded and fixed in the grinding head seat.

[0009] Preferably, the multi-axis mechanical arm comprises at least one driving joint and a driving arm capable of driving the grinding head module to rotate relatively, the driving arm is connected between two adjacent driving joints, the driving joints comprise R-axis joints, P-axis joints and Q-axis joints with perpendicular rotary shafts, the R-axis joints drive the grinding head module to rotate around the central axis of the grinding head seat, and the Q-axis joints drive the grinding head module to rotate around the longitudinal Z-axis.

[0010] Preferably, the polishing table adopts a vacuum adsorption platform with a porous structure, and each hole of the polishing table is provided with an elastic supporting column, and the top of the elastic supporting column is provided with an adaptive ball abutting against the television shell.

[0011] Preferably, the elastic supporting column comprises a column body, a fixed ring and a movable ring, the column body is provided with a flow guide groove extending in the axial direction on the surface, the fixed ring is fixed in the hole of the polishing table, the movable ring is fixed outside the column body, and a supporting spring is connected between the fixed ring and the movable ring.

[0012] Preferably, the fixed ring is an electromagnetic part, and the movable ring is a permanent magnet part.

[0013] Preferably, the full-automatic polishing mechanism further comprises a moving driving module for driving the polishing table and / or the multi-axis mechanical arm to move in a first direction.

[0014] Preferably, the moving driving module comprises a moving guide rail, a moving sliding seat and a mounting base, the mounting base is used for mounting the polishing table and / or the multi-axis mechanical arm, the mounting base is fixedly assembled on the moving sliding seat, and the moving sliding seat is slidingly assembled on the moving guide rail.

[0015] Preferably, the moving driving module further comprises a positioning guide rail, a positioning sliding seat and a positioner, the positioning sliding seat is fixed at the bottom of the mounting base and is slidingly assembled with the positioning guide rail, and the positioner is fixedly assembled on the positioning guide rail, so that the moving position of the mounting base is calibrated through the detection of the moving position of the positioning sliding seat by the positioner.

[0016] Compared with the prior art, the present application has the following beneficial effects: (1) In the application, through the cooperation of the multi-axis mechanical arm and the grinding head module, multi-angle flexible grinding is automatically realized, and the grinding head module can be flexibly switched to different grinding modes under the rotation cooperation of the telescopic frame and the rotating frame, so as to effectively adapt to the adaptive grinding of the plane, curved surface, groove and other structures on the surface of the TV shell without replacing the grinding head, thereby improving the work efficiency.

[0017] (2) In the application, the telescopic frame includes a hollow fixed frame capable of accommodating the rotating frame, so that when the rotating frame is rotated to the parallel station, the rotating frame is accommodated in the hollow cavity of the hollow fixed frame, so as to ensure that the grinding belt at the main roller can be contracted to the smallest angle in this state, thereby ensuring that the grinding belt at the main roller can effectively extend into the groove on the surface of the TV shell.

[0018] (3) In the application, the main roller and the driving roller are respectively rotatably installed at the two ends of the telescopic frame, and the driving roller is connected with the hollow fixed frame through the second adjusting frame and the tension spring, so that the effective tensioning of the grinding belt is realized through the driving roller.

[0019] (4) In the application, a grinding table capable of reciprocating relative to the multi-axis mechanical arm is arranged, the grinding table adopts a vacuum adsorption platform with a porous structure, and an elastic support column is arranged in each hole of the grinding table, so that the TV shell is formed with multi-point support while being fixed by negative adsorption, thereby avoiding deformation of the TV shell due to grinding pressure.

[0020] (5) In the application, the elastic support column is formed by the cooperation of the electromagnetic member, the permanent magnet member and the supporting spring, so as to ensure that the elastic support column located outside the TV shell can be retracted into the corresponding hole, thereby avoiding interference with the movement and grinding of the grinding head module. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a perspective view of the application; Figure 2 is a sectional view of the grinding table in the application; Figure 3 is Figure 2 is an enlarged view of A in the application; Figure 4 is a structural schematic view of the elastic support column in the application; Figure 5 is a structural schematic view of the multi-axis mechanical arm in the application; Figure 6 is a structural schematic view of the moving drive module and the grinding table assembly in the application; Figure 7 is a structural schematic view of the moving drive module in the application; Figure 8 is one of the structural schematic views of the grinding head module in the application; Figure 9Figure 2 is a structural schematic diagram of the grinding head module in the present application; Figure 10 Figure 3 is an exploded view of the grinding head module in the present application; Figure 4 is a schematic diagram of the grinding head module in the present application; Grinding table-100; elastic support column-110; column body-111; fixed ring-112; movable ring-113; flow guide groove-114; support spring-115; adapter ball-120; Multi-axis mechanical arm-200; driving joint-210; driving arm-220; Movement driving module-300; movement guide rail-301; movement sliding seat-302; mounting base-303; positioning guide rail-304; positioning sliding seat-305; positioner-306; Grinding head module-400; telescopic frame-410; main roller-411; driving roller-412; hollow fixing frame-413; first adjusting frame-414; second adjusting frame-415; air cylinder-416; telescopic track-417; tension spring-418; rotating frame-420; guide roller-421; grinding belt-430; grinding head seat-440. DETAILED DESCRIPTION

[0022] In order to further understand the content of the present application, the present application is described in detail in combination with the drawings and examples. The structure, proportion, size, etc. shown in the drawings of the present specification are only used to cooperate with the content disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the limiting conditions of the implementation of the present application, so they do not have technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and the like in the present specification are only for the convenience of clear description, and are not used to limit the implementation range, the change or adjustment of the relative relationship, without substantially changing the technical content, is also regarded as the implementation scope of the present application. It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances, so as to describe the embodiments of the present application.

[0023] As Figure 1As shown, the full-automatic polishing mechanism of the TV shell provided by the present application comprises a rack, a polishing table 100, a multi-axis mechanical arm 200, a moving driving module 300 and a grinding head module 400. Specifically, the moving driving module 300 and the multi-axis mechanical arm 200 are both arranged on the rack; the polishing table 100 is arranged on the moving driving module 300 and is used for supporting and fixing the TV shell to be polished, so that the TV shell can reciprocate along a first direction on one side of the multi-axis mechanical arm 200; the grinding head module 400 is arranged at the end of the multi-axis mechanical arm 200, so that the grinding head module 400 can be driven by the multi-axis mechanical arm 200 to polish the TV shell on the polishing table 100 at multiple angles. Of course, the moving driving module 300 (not shown in the figure) for driving the multi-axis mechanical arm 200 to reciprocate along the first direction can also be arranged on the rack.

[0024] It is worth noting that the present application shows a structural example of two groups of moving driving modules 300 arranged symmetrically on both sides of the multi-axis mechanical arm 200, based on which the TV shell polishing on the polishing table 100 driven by the two groups of moving driving modules 300 can be alternately performed by the multi-axis mechanical arm 200, thereby further providing work efficiency.

[0025] Continuing to refer to Figure 2 and Figure 3 As shown, the polishing table 100 adopts a vacuum adsorption platform with a porous structure, so that the TV shell to be polished is supported and fixed on the top of the polishing table 100 in a vacuum negative adsorption manner.

[0026] It is worth noting that each hole of the polishing table 100 is provided with an elastic supporting column 110, and the top of the elastic supporting column 110 is provided with a matching ball 120 abutting against the TV shell. Specifically, the elastic supporting column 110 comprises a hollow sleeve 110a and a spring 110b arranged in the hollow sleeve 110a. Figure 4The shown column 111, fixed ring 112 and movable ring 113, the column 111 surface is provided with flow guide groove 114 extending along the axial direction, the fixed ring 112 is fixed in the hole of the polishing table 100, the movable ring 113 is fixed outside the column 111, and the fixed ring 112 and the movable ring 113 are connected by the support spring 115. Based on this, the movable ring 113 is close to the fixed ring 112 by the limitation of the support spring 115, while ensuring that the fitting ball 120 at the top of the column 111 can be stretched out from the top of the polishing table 100. When the TV shell is fixed on the top of the polishing table 100 by vacuum suction, the fitting ball 120 abuts against the TV shell, and the degree of compression of the fitting ball 120 and the column 111 is different for different abutting points on the TV shell, so that the column 111 in different holes will retract into the corresponding hole with different degrees of movement, while stretching the corresponding support spring 115, thereby realizing the flexible support of the polishing table 100 to the TV shell at multiple points.

[0027] In a preferred example, the fixed ring 112 is an electromagnetic member, and the movable ring 113 is a permanent magnet member. Based on this, for the elastic support column 110 not supporting the TV shell (i.e. the elastic support column 110 located outside the TV shell), the fixed ring 112 and the movable ring 113 are driven away from each other by energizing the electromagnetic member, thereby stretching the corresponding support spring 115, while ensuring that the column 111 not supporting the TV shell and the fitting ball 120 completely retract into the corresponding hole, and the part of the polishing table 100 not covered by the TV shell presents a top flat structure state, which facilitates the polishing of the side of the TV shell by the grinding head module 400.

[0028] Continuing to refer to Figure 5 As shown, the multi-axis mechanical arm 200 includes at least one driving joint 210 and a driving arm 220 capable of driving the grinding head module 400 to rotate relatively, and the driving arm 220 is connected between adjacent two driving joints 210. Specifically, the multi-axis mechanical arm 200 is fixed on the rack through the base, the driving joint 210 includes R-axis joint, P-axis joint and Q-axis joint with rotation axes perpendicular to each other; the Q-axis joint is connected with the base and is used for rotating the whole multi-axis mechanical arm 200 and the grinding head module 400 around the longitudinal Z-axis; the P-axis joint is connected between the R-axis joint and the Q-axis joint, and there are five P-axis joints in the figure; the R-axis joint is connected with the grinding head module 400 and is used for driving the grinding head module 400 to rotate around the center axis of the grinding head base 440; thereby ensuring that the multi-axis mechanical arm 200 can drive the grinding head module 400 to realize flexible polishing at multiple angles and positions.

[0029] Continuing to refer to Figure 6 and Figure 7As shown, the movement driving module 300 comprises a movement guide rail 301, a movement sliding base 302, and a mounting base 303 for mounting the polishing table 100, and the mounting base 303 is fixedly assembled on the movement sliding base 302, and the movement sliding base 302 is slidingly assembled on the movement guide rail 301. Specifically, the movement driving of the polishing table 100 in the first direction is realized by the cooperation of the movement guide rail 301 and the movement sliding base 302, and the movement guide rail 301 and the movement sliding base 302 adopt the cooperation structure of a linear motor or a motor lead screw.

[0030] It is worth noting that, in order to ensure the stability of the movement of the mounting base 303 and the polishing table 100, the movement guide rail 301 is symmetrically provided with two groups to provide symmetrical and balanced stable support for the mounting base 303.

[0031] In an illustrative embodiment, the movement driving module 300 further comprises a positioning guide rail 304, a positioning sliding base 305, and a positioner 306, the positioning sliding base 305 is fixedly assembled on the bottom of the mounting base 303 and slidingly assembled with the positioning guide rail 304, and the positioner 306 is fixedly assembled on the positioning guide rail 303 to calibrate the movement position of the mounting base 303 and the polishing table 100 by detecting the movement position of the positioning sliding base 304 by the positioner 306. Specifically, the positioner 306 can adopt an infrared detection positioner to realize the accurate detection of the movement position of the positioning sliding base 304. In summary, the reciprocating movement of the polishing table 100 is realized by the cooperation of the movement guide rail 301 and the movement sliding base 302, and the movement process of the polishing table 100 in each reciprocating movement is limited by the cooperation of the positioning guide rail 304, the positioning sliding base 305, and the positioner 306, so as to ensure that the television shell on the polishing table 100 can be accurately matched with the multi-axis robot 200 and the grinding head module 400.

[0032] Continuing to refer to Figure 8 , Figure 9 and Figure 10As shown, the grinding head module 400 includes a grinding head base 440, a telescopic frame 410, and a rotating frame 420. The hollow fixing frame 413 is fixed on the grinding head base 440, and a rotating motor for driving the rotating frame 420 to rotate is embedded in the grinding head base 440. The telescopic frame 410 is rotatably installed with a main roller 411 and a driving roller 412 at both ends, respectively. The rotating frame 420 is rotatably installed with a guide roller 421 at the end. The main roller 411, the driving roller 412, and the guide roller 421 are externally sleeved with a grinding belt 430. The rotating frame 420 can rotate relative to the telescopic frame 410, so that the rotating frame 420 swings between a vertical working position and a parallel working position. Specifically, when the rotating frame 420 is driven by the rotating motor to rotate to the vertical working position, the rotating frame 420 is perpendicular to the telescopic frame 410, and the grinding belt 430 is opened to the maximum angle at the main roller 411. When the rotating frame 420 is driven by the rotating motor to rotate to the parallel working position, the rotating frame 420 is parallel to the telescopic frame 410, and the grinding belt 430 is contracted to the minimum angle at the main roller 411. The position of the main roller 411 is taken as the grinding position of the whole grinding head module 400. In this way, the grinding belt 430 is flexibly applicable to grinding of different structures according to the different opening angles of the grinding belt 430 at the main roller 411. For example: When a plane structure is ground, the rotating frame 420 is ensured to rotate to the vertical working position. At this time, the grinding belt 430 between the main roller 411 and the guide roller 421 constitutes plane grinding. When a curved surface or an inclined surface is ground, according to the inclination angle of the curved surface or the inclined surface, the rotating frame 420 is rotated or the grinding head module 400 is rotated around the central axis of the grinding head base 440 by the R-axis joint drive, so as to adjust the inclination of the grinding belt 430 between the main roller 411 and the guide roller 421, thereby flexibly adapting to the inclination angle of the curved surface or the inclined surface to be ground. When a groove is ground, the rotating frame 420 is rotated to the parallel working position, so that the grinding belt 430 is contracted to the minimum angle at the main roller 411. At this time, the main roller 411 is inserted into the groove, and the grinding belt 430 on the surface of the main roller 411 can grind the inside of the groove.

[0033] In addition, since the grinding belt 430 can be attached and deformed according to the position to be ground, the grinding belt 430 can be attached to a curved surface, or a connection between a plane and a curved surface, or a connection between a plane and an inclined surface, or a connection between a curved surface and an inclined surface, or a connection between a plane and a groove, or a connection between a curved surface and a groove, or a connection between an inclined surface and a groove by driving the telescopic frame 410 to adjust the tension of the grinding belt 430. Further, the whole grinding head module 400 can be flexibly ground on any position on the surface of the television cabinet.

[0034] In an illustrative embodiment, the telescopic frame 410 comprises a hollow fixed frame 413 and a first adjusting frame 414 and a second adjusting frame 415 respectively slidingly connected to both ends of the hollow fixed frame 413. The rotating frame 420 is rotatably installed in the hollow cavity of the hollow fixed frame 413, the main roller 411 is rotatably installed on the first adjusting frame 414, the driving roller 412 is rotatably installed on the second adjusting frame 415, and the second adjusting frame 415 is further provided with a driving motor for driving the driving roller 412 to rotate, so that the driving motor drives the driving roller 412 to rotate, thereby achieving the transmission polishing of the polishing belt 430; and when the rotating frame 420 is driven by the rotating motor to rotate to the parallel station, the rotating frame 420 retracts to the hollow cavity of the hollow fixed frame 413 according to the state shown in the figure. Figure 9

[0035] Specifically, when the rotating frame 420 is transferred from the vertical station to the parallel station, the polishing belt 430 will be loosened, at which time the extension of the telescopic frame 410 can be used to increase the distance between the main roller 411 and the driving roller 412, thereby ensuring the tension of the polishing belt 430 on the surface of the main roller 411. In the present application, in order to realize the telescopic adjustment of the telescopic frame 410, the first adjusting frame 414 and the hollow fixed frame 413 are connected by a cylinder 416 and a telescopic rail 417, and the second adjusting frame 415 and the hollow fixed frame 413 are connected by a tension spring 418, so that the telescopic frame 410 can be actively extended and passively extended. Among them, the first adjusting frame 414 presents a Z-shaped structure to provide a reasonable installation position for the telescopic rail 417, the cylinder 416 and the main roller 411, and the second adjusting frame 415 presents an H-shaped structure to ensure that the second adjusting frame 415 can form a stable sliding fit with the hollow fixed frame 413. In addition, the telescopic rail 417 adopts a multi-section telescopic structure to ensure that the telescopic adjustment of the overall telescopic frame 410 can effectively meet the tensioning adjustment requirements of the polishing belt 430 during the rotation of the rotating frame 420. The tension spring 418 is provided to provide elastic tension for the polishing belt 430, and to ensure that the polishing belt 430 can effectively realize the deformation of adhesion.

[0036] It is worth noting that the two ends of the rotating frame 420 are rotatably installed with guide rollers 421, and the rotating frame 420 is rotatably installed in the hollow cavity of the hollow fixed frame 413 in an eccentric manner. As shown in the figure, Figure 8 When the rotating frame 420 rotates eccentrically to the vertical station, the polishing belt 430 is stretched to form a quadrilateral structure, the vertical distance between the right end of the rotating frame 420 and the telescopic frame 410 is greater than the vertical distance between the left end of the rotating frame 420 and the telescopic frame 410, and based on this, the polishing belt 430 between the right end guide roller 421 of the rotating frame 420 and the main roller 411 is taken as the main polishing position.

[0037] ​In the description of the present application, reference to "one embodiment", "some embodiments", "an exemplary embodiment", "an example", "a specific example", or "some examples" means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. The appearances of the phrases "in one embodiment", "in some embodiments", "in an exemplary embodiment", "an example", "a specific example", or "some examples" in various places in the specification are not necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0038] It is noted that the foregoing are merely preferred embodiments of, and the technical principles applied to, the present application. It can be understood by those skilled in the art that the present application is not limited to the specifically described embodiments, and various obvious changes, re-adjustments, and replacements can be made by those skilled in the art without departing from the protection scope of the present application. Therefore, although the present application has been described in detail with reference to the above embodiments, the present application is not limited to the above embodiments only, but can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is defined by the appended claims.

Claims

1. A full-automatic polishing mechanism for a television cabinet, characterized in that, The polishing table (100) is used for supporting and fixing the television shell to be polished. The multi-axis mechanical arm (200) is arranged on one side of the polishing table (100). The grinding head module (400) is arranged at the end of the multi-axis mechanical arm (200). The grinding head module (400) includes a telescopic frame (410) and a rotating frame (420), both ends of the telescopic frame (410) are rotatably installed with a main roller (411) and a driving roller (412), and the end of the rotating frame (420) is rotatably installed with a guide roller (421). The main roller (411), the driving roller (412) and the guide roller (421) are externally sleeved with a polishing belt (430), and the rotating frame (420) can rotate relative to the telescopic frame (410) to swing the rotating frame (420) between a vertical working position and a parallel working position. When the rotating frame (420) rotates to the vertical working position, the rotating frame (420) is perpendicular to the telescopic frame (410), and the polishing belt (430) is opened to the maximum angle at the main roller (411). When the rotating frame (420) rotates to the parallel working position, the rotating frame (420) is parallel to the telescopic frame (410), and the polishing belt (430) is contracted to the minimum angle at the main roller (411). The telescopic frame (410) includes a hollow fixed frame (413), a first adjusting frame (414) and a second adjusting frame (415) which are slidably connected to both ends of the hollow fixed frame (413), the rotating frame (420) is rotatably installed in the hollow cavity of the hollow fixed frame (413), the main roller (411) is rotatably installed on the first adjusting frame (414), the driving roller (412) is rotatably installed on the second adjusting frame (415), and a driving motor for driving the driving roller (412) is further arranged on the second adjusting frame (415).

2. The full-automatic polishing mechanism for television cabinet according to claim 1, characterized in that: The first adjusting frame (414) and the hollow fixed frame (413) are connected with a gas cylinder (416) and a telescopic rail (417), and the second adjusting frame (415) and the hollow fixed frame (413) are connected with a tension spring (418).

3. The full-automatic polishing mechanism for TV cabinet according to claim 2, characterized in that: The grinding head module (400) further includes a grinding head seat (440), the hollow fixed frame (413) is fixed on the grinding head seat (440), and a rotary motor for driving the rotating frame (420) to rotate is embedded and fixed in the grinding head seat (440).

4. The full-automatic polishing mechanism for television cabinet according to claim 2 or 3, characterized in that: The multi-axis mechanical arm (200) includes at least one driving joint (210) capable of driving the grinding head module (400) to rotate relatively and a driving arm (220), the driving arm (220) is connected between two adjacent driving joints (210), the driving joint (210) includes an R-axis joint, a P-axis joint and a Q-axis joint whose rotary shafts are perpendicular to each other, the R-axis joint drives the grinding head module (400) to rotate around the central axis of the grinding head seat (440), and the Q-axis joint drives the grinding head module (400) to rotate around the longitudinal Z-axis.

5. The full-automatic polishing mechanism for TV cabinet according to claim 4, characterized in that: ​ 6. The full-automatic polishing mechanism for television cabinet according to claim 1, characterized in that: The polishing table (100) adopts a vacuum adsorption platform with a porous structure, and each hole of the polishing table (100) is provided with an elastic support column (110), and the top of the elastic support column (110) is provided with an adapter ball (120) that abuts against the TV casing.

7. The full-automatic polishing mechanism for TV cabinet according to claim 6, characterized in that: The elastic support column (110) includes a column body (111), a fixed ring (112) and a movable ring (113). The surface of the column body (111) is provided with a guide groove (114) extending along the axial direction. The fixed ring (112) is fixed in the hole of the grinding table (100). The movable ring (113) is fixed outside the column body (111), and a support spring (115) is connected between the fixed ring (112) and the movable ring (113).

8. The full-automatic polishing mechanism for television cabinet according to claim 7, characterized in that: The fixed ring (112) is an electromagnetic component, and the movable ring (113) is a permanent magnet component.

9. The full-automatic polishing mechanism for television cabinet according to claim 1, characterized in that: It also includes a motion drive module (300) for driving the grinding table (100) and / or the multi-axis robotic arm (200) to move along a first direction; The mobile drive module (300) includes a mobile guide rail (301), a mobile slide (302), and a mounting base (303). The mounting base (303) is used to mount the grinding table (100) and / or the multi-axis robotic arm (200), and the mounting base (303) is fixedly mounted on the mobile slide (302), which is slidably mounted on the mobile guide rail (301).

10. The full-automatic polishing mechanism for television cabinet according to claim 9, characterized in that: The mobile drive module (300) also includes a positioning guide rail (304), a positioning slide (305), and a locator (306). The positioning slide (305) is fixed to the bottom of the mounting base (303) and slidably assembled with the positioning guide rail (304). The locator (305) is fixedly assembled on the positioning guide rail (303) so as to calibrate the moving position of the mounting base (303) by detecting the moving position of the positioning slide (304) through the locator (305).

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