A laser welding device and method for television back panel

Abstract

The present invention provides a television back panel laser welding device and method, which relates to the field of laser welding technology, including a substrate, a laser welding component, and a mounting table component, and specifically designs a vertical plate, a magnetic attraction-telescopic-rotating component and a positioning structure. The magnetic attraction-telescopic-rotating component is used to connect the television back panel, and the positioning structure is used to clamp and position the side of the television back panel. Since two groups of side push components are clamped toward the middle, when there is a slight position difference between the side panels of the television back panel inward / outward, the side panels of the television back panel can be inserted into the clamping gap. This method has better fault tolerance, and since the first positioning unit and the second positioning unit are vertically distributed and do not need to apply force to the side panels of the television back panel at the corner, it will not affect the welding operation of the laser welding component, and the magnetic attraction-telescopic-rotating component can be automatically operated, thereby improving the automation and production efficiency of laser welding production of television back panels.

Description

Technical Field

[0001] The invention relates to the technical field of laser welding, and in particular to a television back panel laser welding device and method. Background Art

[0002] The TV back panel is an important part of the TV. It is located on the back of the TV and plays multiple roles such as support, protection and decoration. It is usually made of solid metal material and can withstand the weight of various electronic components inside the TV to ensure the overall stability and safety of the TV.

[0003] The manufacturing process of the TV back panel mainly includes stamping, riveting, welding, and grinding. The structural parts before welding can be deformed and moved relative to each other. The structural parts are fixed by welding to determine the final size and shape. Therefore, the positioning of the structural parts in the welding process is particularly important for the size and shape of the finished TV back panel (and also facilitates later installation). The general TV back panel is a square shell structure, which is clamped and positioned by a right-angled bevel block that moves at a 45° angle. This method is prone to problems such as the bevel block being welded together with the TV back panel structural parts during the welding process. In addition, the right-angled bevel block only moves in a single direction from the inside to the outside or from the outside to the inside, and the position of the structural parts needs to be adjusted manually, which is not conducive to efficient and automated laser welding production of TV back panels. For this reason, the present invention provides a TV back panel laser welding device and method. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a laser welding device and method for a television back panel, which solves the problem that the conventional method of clamping and positioning with a right-angled bevel block that moves at a 45° angle is prone to welding the bevel block to the structural parts of the television back panel during the welding process, and the right-angled bevel block only moves in a single direction from the inside to the outside or from the outside to the inside, requiring manual adjustment of the position of the structural parts, which is not conducive to the efficient and automated laser welding production of television back panels.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A laser welding device for a TV back panel comprises a substrate, on which a laser welding assembly and a mounting platform assembly are fixedly mounted, wherein two groups of laser welding assemblies are provided, and the two groups of laser welding assemblies are respectively arranged on both sides of the mounting platform assembly; The mounting platform assembly comprises: Stand board; A magnetic attraction-telescopic-rotating assembly, which is installed at the center of the vertical board and is used to connect the TV back panel and operate the TV back panel to rotate along the axis direction perpendicular to the front side of the vertical board and to move linearly along the axis direction perpendicular to the front side of the vertical board; A positioning structure, the positioning structure is installed on the front side of the vertical plate; The positioning structure includes a first positioning component and a second positioning component symmetrically distributed on both sides of the vertical plate; The first positioning assembly includes a first positioning unit and a second positioning unit, and the first positioning unit and the second positioning unit are vertically distributed; The first positioning unit includes two groups of side thrust assemblies which are arranged in parallel and symmetrically, and a clamping gap is formed between the two groups of side thrust assemblies.

[0006] Preferably, the laser welding assembly includes: a Y-axis moving assembly, an X-axis moving assembly, a Z-axis moving assembly, an A-axis rotating assembly and a laser welding head; The Y-axis moving assembly and the X-axis moving assembly are integrated in a box, and the X-axis moving assembly is installed at the action end of the Y-axis moving assembly, the bottom end of the Z-axis moving assembly is fixedly installed at the action end of the X-axis moving assembly, the A-axis rotating assembly is fixedly installed at the top telescopic end of the Z-axis moving assembly, and the laser welding head is fixedly installed at the output end of the A-axis rotating assembly.

[0007] Preferably, a support frame is fixedly provided at the bottom of the vertical plate, the support frame is fixedly connected to the base plate, and a mounting hole is opened at the center position of the front side surface of the vertical plate; The magnetic attraction-telescopic-rotation assembly comprises: A rotating assembly, wherein the rotating assembly is installed inside the mounting hole; A magnetic attraction component, wherein the magnetic attraction component is slidably mounted with the rotating component along the axial direction of the rotating component; A telescopic component is installed on the rotating component, and the telescopic end of the telescopic component is fixedly installed with the magnetic attraction component.

[0008] Preferably, the rotating assembly comprises: An annular member, wherein the center of the annular member has an end plate, and a center hole is opened on the center end plate of the annular member, and the outer side of the annular member has a cylindrical connecting portion, and the cylindrical connecting portion is rotatably mounted through a bearing ring and a mounting hole; A first gear, wherein the first gear is fixedly mounted on the cylindrical connecting portion of the annular member, and a limiting axis is fixedly arranged on the cylindrical connecting portion of the annular member and between the first gear and the bearing ring; A mounting plate, the mounting plate is fixedly mounted on the back of the end plate of the annular member, and at least one set of guide seats is fixedly arranged on the mounting plate, and a guide hole is arranged at the center of the guide seat; The driving motor is mounted on the back of the vertical plate through a frame body, and a second gear meshing with the first gear is fixedly mounted on the output end of the driving motor.

[0009] Preferably, the magnetic attraction component includes: A slot frame, wherein a slot is formed on the front side of the slot frame; An electromagnetic block, wherein the electromagnetic block is arranged on the inner side of the notch of the slot frame, and at least two threaded rods are vertically passed through the slot frame and the electromagnetic block, a first nut group is threadedly installed on the threaded rod and located on both sides of the electromagnetic block, and a second nut group is threadedly installed on the threaded rod and located on both sides of the slot frame; An anti-collision pad is fixedly arranged on the front side of the groove frame; A long sliding rod which is slidably matched with the guide seat is fixedly arranged on the back side of the groove frame.

[0010] Preferably, the telescopic assembly comprises: A U-shaped frame, wherein the U-shaped frame is buckled on the end plate of the annular member in a transverse direction, and the U-shaped frame is fixedly mounted on the end plate of the annular member by screws; The first telescopic member is fixedly mounted on the back of the U-shaped frame, and the telescopic end of the first telescopic member passes through the back of the U-shaped frame, and the telescopic end of the first telescopic member is fixedly mounted with a second connecting plate, and the second connecting plate is fixedly mounted with the end of the sliding long rod.

[0011] Preferably, the side thrust assembly comprises: A shell, the shell is fixedly mounted on the front side of the vertical plate, one side of the shell is set as an open end, and a rectangular opening is opened on the side of the shell parallel to the open end; A rotating shaft, wherein the rotating shaft is rotatably mounted on the front side of the vertical plate, one end of the rotating shaft is located on the inner side of the housing and fixedly mounted with a cam member, and the other end of the rotating shaft is located on the back side of the vertical plate and fixedly mounted with a third gear; A push plate, the push plate is arranged at the open end of the shell, and one end of the push plate facing the inner side of the shell is fixedly connected with a cross frame, a guide frame is slidably arranged inside the rectangular opening, and the cross frame is slidably matched with the guide frame; A swing rod, one end of which is rotatably connected to the housing through a first screw, and the other end of which is rotatably connected to the bottom end of the push plate; A spring is connected between the cross frame and the rocker member.

[0012] Preferably, the guide frame includes: Two groups of first plates are centrally symmetrically arranged, a cushion block is arranged between the two groups of the first plates, and the two groups of the first plates and the cushion block are fixedly connected by a second screw; The outer side of the first plate is provided with a side plate portion, and the side plate portions of the two groups of first plates are respectively located on both sides of the rectangular opening; A sliding opening is provided on the side of the horizontal frame, and a sliding protrusion corresponding to the sliding opening is fixedly provided on the side of the first plate.

[0013] Preferably, the third gears of the two thrust assemblies in the first positioning unit are meshed; An extension shaft is arranged on the rotating shaft of one of the two side thrust assemblies in the first positioning unit, and an input gear is installed on the extension shaft; The first positioning unit and the second positioning unit have the same structure, and the input gear in the first positioning unit is meshed with the input gear in the second positioning unit; The positioning structure also includes: a driving assembly, the driving assembly including: a first sliding seat and a second sliding seat arranged in parallel, the first sliding seat and the second sliding seat are both fixedly connected to the back side of the vertical plate, a first rack is slidably arranged on the inner side of the first sliding seat, a second rack is slidably arranged on the inner side of the second sliding seat, a first connecting plate is fixedly connected to the tops of the first rack and the second rack, a second telescopic member is fixedly connected to the back side of the vertical plate, and a telescopic end of the second telescopic member is fixedly installed on the first connecting plate; One of the input gears in the first positioning assembly is meshed with the second rack, and one of the input gears in the second positioning assembly is meshed with the first rack.

[0014] Another object of the present invention is to provide a TV back panel laser welding method, using the above-mentioned TV back panel laser welding device, specifically comprising the following steps: S1, the magnetic attraction-telescopic-rotating assembly is in the extended state, and the user / manipulator positions and installs the TV back panel on the magnetic attraction-telescopic-rotating assembly; S2, the clamping gap of the positioning structure is in an open state, the magnetic attraction-retractable-rotating assembly manipulates the TV back panel to move closer to the vertical panel, so that the side of the TV back panel is inserted into the clamping gap, the positioning structure is actuated to clamp and position the side of the TV back panel, and the laser welding assembly is actuated to complete one welding; S3, the positioning structure is reset, so that the clamping gap of the positioning structure is in an open state, the magnetic attraction-telescopic-rotation assembly manipulates the TV back panel to move away from the vertical panel, and then the magnetic attraction-telescopic-rotation assembly manipulates the TV back panel to rotate 180°, and repeats step S2 to complete the secondary welding; S4, the positioning structure is reset, the clamping gap of the positioning structure is in an open state, the magnetic attraction-telescopic-rotating assembly manipulates the TV back panel to move away from the vertical panel, and the next TV back panel is replaced and steps S1-S4 are performed again.

[0015] The present invention provides a TV back panel laser welding device and method, which has the following beneficial effects: The present invention improves the structure of the mounting platform component and specifically designs a vertical plate, a magnetic-telescopic-rotating component and a positioning structure. The magnetic-telescopic-rotating component is installed at the center of the vertical plate and is used to connect the TV back plate. The positioning structure is installed on the front side of the vertical plate and is used to clamp and position the side edge of the TV back plate. When in use, a robot or manual operation can be used to install the TV back plate on the magnetic-telescopic-rotating component. The magnetic-telescopic-rotating component controls the TV back plate to approach the vertical plate, and the side plates of the TV back plate are inserted into the clamping gap of the positioning structure. The side plates of the TV back plate are positioned and clamped by two sets of side pushing components that move synchronously toward the center on both sides, thereby achieving It can be quickly positioned. Since two sets of side-pushing components are used to clamp toward the middle, when there is a slight position difference between the side panels of the TV back panel inward / outward, the side panels of the TV back panel can be inserted into the clamping gap, and then the positioning structure pushes the side panels of the TV back panel to the center plane of the clamping gap for positioning. This method has better fault tolerance, and since the first positioning unit and the second positioning unit are vertically distributed and do not need to apply force to the side panels of the TV back panel at the corners, the first positioning unit and the second positioning unit will not affect the welding operation of the laser welding component, and the magnetic attraction-retraction-rotation component can be automatically operated to improve the automation and production efficiency of laser welding production of TV back panels. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A stereoscopic diagram of a laser welding device for a TV back panel proposed by the present invention; Figure 2 This is a front view of a laser welding device for a TV back panel proposed by the present invention; Figure 3 A top view of a laser welding device for a TV back panel proposed by the present invention; Figure 4 for Figure 2 Section view of the section line at AA; Figure 5 for Figure 4 A partial enlarged view of point B in the middle; Figure 6 This is a front structural diagram of a TV back panel laser welding device proposed by the present invention; Figure 7 This is a back structural diagram of a TV back panel laser welding device proposed by the present invention; Figure 8 A three-dimensional schematic diagram of a magnetic attraction-retraction-rotation assembly of a laser welding device for a TV back panel proposed by the present invention; Fig. 9 An exploded view of a magnetic attraction-telescopic-rotational assembly of a laser welding device for a TV back panel proposed by the present invention; Fig.10A three-dimensional schematic diagram of a magnetic suction component of a laser welding device for a TV back panel proposed by the present invention; Fig.11 A three-dimensional schematic diagram of a positioning structure of a laser welding device for a TV back panel proposed by the present invention; Fig.12 A three-dimensional schematic diagram of a positioning assembly of a laser welding device for a TV back panel proposed by the present invention; Fig.13 A three-dimensional schematic diagram of a positioning unit of a laser welding device for a TV back panel proposed by the present invention; Fig.14 A three-dimensional schematic diagram of a side push assembly of a laser welding device for a TV back panel proposed by the present invention; Fig.15 This is an exploded schematic diagram of a guide block of a TV back panel laser welding device proposed in the present invention.

[0017] Among them, 1, substrate; 2, laser welding assembly; 201, Y-axis moving assembly; 202, X-axis moving assembly; 203, Z-axis moving assembly; 204, A-axis rotating assembly; 205, laser welding head; 3, mounting table assembly; 301, vertical plate; 301a, support frame; 301b, mounting hole; 302, positioning structure; 302a1, first positioning assembly; 302a1a, first positioning unit; 302a1a1, input gear; 302a1a2, side thrust assembly; 302a1a2a, housing; 302a1a2b, shaft; 302a1 a2c, third gear; 302a1a2d, cam member; 302a1a2e, push plate; 302a1a2f, first screw; 302a1a2g, rocker member; 302a1a2h, cross frame; 302a1a2ha, sliding opening; 302a1a2i, spring; 302a1a2j, guide frame; 302a1a2j1, first plate; 302a1a2j1a, side plate; 302a1a2j1b, sliding protrusion; 302a1a2j2, pad; 302a1a2j3, second screw; 302a1a2k, Rectangular opening; 302a1a3, extension shaft; 302a1b, second positioning unit; 302a2, second positioning assembly; 302a3, driving assembly; 302a3a, first sliding seat; 302a3b, second sliding seat; 302a3c, first rack; 302a3d, second rack; 302a3e, first connecting plate; 302a3f, second telescopic member; 303, magnetic attraction-telescopic-rotation assembly; 303a, rotation assembly; 303a1, annular member; 303a2, bearing ring; 303a3, first gear; 303a4, driving motor Machine; 303a5, second gear; 303a6, limit shaft; 303a7, center hole; 303a8, mounting plate; 303a9, guide seat; 303b, magnetic suction component; 303b1, slot frame; 303b2, electromagnetic block; 303b3, threaded rod; 303b4, first nut group; 303b5, second nut group; 303b6, anti-collision pad; 303b7, sliding long rod; 303c, telescopic component; 303c1, U-shaped frame; 303c2, first telescopic part; 303c3, second connecting plate; a, TV back panel; b, clamping gap. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Embodiment 1 like Figure 1-Figure 15 As shown, an embodiment of the present invention provides a TV back panel laser welding device, including a substrate 1, a laser welding assembly 2, and a mounting platform assembly 3, wherein the substrate 1 plays a role of stable connection, the laser welding assembly 2 and the mounting platform assembly 3 are both fixedly mounted on the substrate 1, and two groups of laser welding assemblies 2 are provided, and the two groups of laser welding assemblies 2 are respectively arranged on both sides of the mounting platform assembly 3, so that the two groups of laser welding assemblies 2 can perform welding operations at the same time, thereby improving the efficiency of the welding work.

[0020] The mounting platform assembly 3 serves to fix and position the TV back panel a. The TV back panel a is placed on the mounting platform assembly 3. After the TV back panel a is fixed and positioned by the mounting platform assembly 3, a weld seam is formed. Then, the laser welding assembly 2 is operated to perform welding operations on the weld seam, thereby completing the welding work of the TV back panel a.

[0021] In order to ensure that the mounting platform assembly 3 can fix the TV back panel a and clamp the side of the TV back panel a so that the TV back panel a is accurately spliced ​​and positioned, and does not affect the laser welding operation of the laser welding assembly 2, and can improve the welding efficiency of the TV back panel a, the present embodiment makes the following improvements to the mounting platform assembly 3; the specific mounting platform assembly 3 includes: a vertical plate 301, a magnetic-telescopic-rotation assembly 303 and a positioning structure 302, the vertical plate 301 provides a vertical mounting facade for installing the magnetic-telescopic-rotation assembly 303 and the positioning structure 302, the magnetic-telescopic-rotation assembly 303 is installed at the center of the vertical plate 301, and is used to connect the TV back panel a, and manipulate the TV back panel a to rotate along the axis direction perpendicular to the front side of the vertical plate 301 and move linearly along the axis direction perpendicular to the front side of the vertical plate 301, the positioning structure 302 is installed on the front side of the vertical plate 301, and is used to clamp and position the side of the TV back panel a, thereby forming a stable splicing weld, which is convenient for the laser welding assembly 2 to perform welding.

[0022] Specifically, the positioning structure 302 includes a first positioning component 302a1 and a second positioning component 302a2 symmetrically distributed on both sides of the vertical plate 301. The first positioning component 302a1 and the second positioning component 302a2 act on the left and right sides of the top of the TV back panel a, thereby realizing the positioning and clamping of the two sides of the top of the TV back panel a, corresponding to the above-mentioned two groups of laser welding components 2; the first positioning component 302a1 includes a first positioning unit 302a1a and a second positioning unit 302a1b, the first positioning unit 302a1a and the second positioning unit 302a1b are vertically distributed, the first positioning unit 302a1a and the second positioning unit 302a1b respectively clamp and position the horizontal side panel and the vertical side panel at the corner of the TV back panel a, thereby realizing the positioning of the corner of the TV back panel a; the first positioning unit 302a1a includes two groups of side pushing components 302a1a2 arranged in parallel and symmetrically, and the two groups of side pushing components 302a1a2 are arranged between A clamping gap b is formed, and the side panels of the TV back panel a are inserted into the clamping gap b. Then, the two groups of side pushing components 302a1a2 act synchronously to clamp the side panels of the TV back panel a to the center surface position of the clamping gap b. For example, the side panels of the TV back panel a can be inserted into the clamping gap b whether they are deformed toward the outside or the inside. Then, the side pushing components 302a1a2 on both sides clamp the side panels of the TV back panel a toward the middle. The side pushing components 302a1a2 on both sides clamp and fix the side panels of the TV back panel a at the center surface position of the clamping gap b. When necessary, the gap of the clamping gap b can be set wider to ensure that when the robot manipulates the TV back panel a to be installed on the magnetic attraction-telescopic-rotation component 303, the side panels of the TV back panel a can correspond to the clamping gap b, which is convenient for the subsequent magnetic attraction-telescopic-rotation component 303 to manipulate the TV back panel a to approach the vertical plate 301, so that the side edge of the TV back panel a is stuck in the clamping gap b.

[0023] The specific use includes the following steps: Keep the magnetic attraction-telescopic-rotating assembly 303 in the extended state, the user / manipulator positions and installs the TV back panel a on the magnetic attraction-telescopic-rotating assembly 303, and then keeps the clamping gap b of the positioning structure 302 in the open state. The magnetic attraction-telescopic-rotating assembly 303 manipulates the TV back panel a to approach the vertical plate 301, so that the side of the TV back panel a is stuck in the clamping gap b, the positioning structure 302 is actuated to clamp and position the side of the TV back panel a, the laser welding assembly 2 is actuated to complete one welding, and then the positioning structure 302 is reset , so that the clamping gap b of the positioning structure 302 is in an open state, the magnetic attraction-telescopic-rotation component 303 manipulates the TV back panel a to move away from the vertical plate 301, and then the magnetic attraction-telescopic-rotation component 303 manipulates the TV back panel a to rotate 180°, repeat step S2 to complete the secondary welding, and finally reset the positioning structure 302, the clamping gap b of the positioning structure 302 is in an open state, the magnetic attraction-telescopic-rotation component 303 manipulates the TV back panel a to move away from the vertical plate 301, replace the next TV back panel a and perform the above steps again.

[0024] In this embodiment, by improving the structure of the mounting platform component 3, a vertical plate 301, a magnetic-telescopic-rotating component 303 and a positioning structure 302 are specifically designed. The magnetic-telescopic-rotating component 303 is installed at the center of the vertical plate 301 for connecting the TV back plate a. The positioning structure 302 is installed on the front side of the vertical plate 301 for clamping and positioning the side edge of the TV back plate a. When in use, a robot / manual operation can be used to install the TV back plate a on the magnetic-telescopic-rotating component 303. The magnetic-telescopic-rotating component 303 controls the TV back plate a to approach the vertical plate 301, and the TV back plate a is inserted into the clamping gap b of the positioning structure 302. The side plates of the TV back plate a are positioned and clamped by two sets of side pushing components 302a1a2 that move synchronously toward the center on both sides, thereby Rapid positioning is achieved because two sets of side-pushing components 302a1a2 are used to clamp toward the middle. When there is a slight position difference between the side panels a of the TV back panel and the side panels a of the TV back panel can be inserted into the clamping gap b. Then the positioning structure 302 pushes the side panels a of the TV back panel to the center plane of the clamping gap b for positioning. This method has better fault tolerance. Moreover, since the first positioning unit 302a1a and the second positioning unit 302a1b are vertically distributed and do not need to apply force to the side panels a of the TV back panel at the corners, the first positioning unit 302a1a and the second positioning unit 302a1b will not affect the welding operation of the laser welding component 2. Moreover, the magnetic attraction-retraction-rotation component 303 can be automatically operated to improve the automation and production efficiency of laser welding production of TV back panels.

[0025] In one embodiment, the laser welding assembly 2 includes: a Y-axis moving assembly 201 , an X-axis moving assembly 202 , a Z-axis moving assembly 203 , an A-axis rotating assembly 204 and a laser welding head 205 .

[0026] The Y-axis moving assembly 201 and the X-axis moving assembly 202 are integrated in the box, the X-axis moving assembly 202 is installed at the action end of the Y-axis moving assembly 201, the Y-axis moving assembly 201 and the X-axis moving assembly 202 constitute movement in two directions on the horizontal plane, the bottom end of the Z-axis moving assembly 203 is fixedly installed at the action end of the X-axis moving assembly 202, the Y-axis moving assembly 201, the X-axis moving assembly 202, and the Z-axis moving assembly 203 can all use the screw moving structure commonly used in current machine tools, and the Y-axis moving assembly 201, the X-axis moving assembly 202, and the Z-axis moving assembly 203 constitute an empty The laser welding head 205 can move in three directions within the space, the A-axis rotating component 204 is fixedly installed on the top telescopic end of the Z-axis moving component 203, and the laser welding head 205 is fixedly installed on the output end of the A-axis rotating component 204. The direction of the laser welding head 205 is adjusted by the A-axis rotating component 204, and the path of the laser welding head 205 is adjusted by the Y-axis moving component 201, the X-axis moving component 202, and the Z-axis moving component 203. It is worth noting that some auxiliary structures equipped with the laser welding head 205, the laser source and the wiring harness connected to the laser welding head 205 are all existing technologies and will not be elaborated here.

[0027] In one embodiment, a support frame 301a is fixedly provided at the bottom of the vertical plate 301, and the support frame 301a is fixedly connected to the base plate 1. The support frame 301a is used to support and install the main part of the vertical plate 301. A mounting hole 301b is opened at the center position of the front side of the vertical plate 301, and the mounting hole 301b is used to install the magnetic attraction-retractable-rotation component 303.

[0028] Specifically, the magnetic attraction-telescopic-rotation component 303 includes: a rotation component 303a, a magnetic attraction component 303b, and a telescopic component 303c.

[0029] The rotating component 303a is installed on the inner side of the mounting hole 301b. The rotating component 303a itself has a power structure, which can rotate relative to the vertical plate 301. The magnetic component 303b is slidably installed with the rotating component 303a along the axial direction of the rotating component 303a. The magnetic component 303b is used to magnetically adsorb and fix the TV back panel a. It is worth noting that in some cases the magnetic component 303b can also be replaced with a vacuum attraction structure, both of which can play the role of connecting the TV back panel a. The telescopic component 303c is installed on the rotating component 303a, and the telescopic end of the telescopic component 303c is fixedly installed with the magnetic component 303b. The telescopic component 303c is used to manipulate the magnetic component 303b to slide along the axial direction of the rotating component 303a.

[0030] During specific use, after the magnetic component 303b is connected to the TV back panel a, the rotating component 303a and the telescopic component 303c can be used to control the TV back panel a to rotate and slide linearly to cooperate with the above-mentioned laser welding process of the TV back panel a and change the welding position of the TV back panel a.

[0031] In one embodiment, the rotating assembly 303a includes: a ring member 303a1, a first gear 303a3, a mounting plate 303a8, and a driving motor 303a4.

[0032] The center of the annular member 303a1 has an end plate, and a center hole 303a7 is opened on the center end plate of the annular member 303a1, and the wiring harness of the magnetic attraction component 303b passes through the center hole 303a7 to the rear of the rotating component 303a, and the outer side of the annular member 303a1 has a cylindrical connecting portion, and the cylindrical connecting portion is rotatably installed through the bearing ring 303a2 and the mounting hole 301b, so that the annular member 303a1 can rotate relative to the vertical plate 301, and the first gear 303a3 is fixedly installed on the cylindrical connecting portion of the annular member 303a1, and a limiting axis is fixedly set on the cylindrical connecting portion of the annular member 303a1 and between the first gear 303a3 and the bearing ring 303a2. 303a6, the limiting shaft 303a6 plays a limiting role to prevent the first gear 303a3 and the bearing ring 303a2 from axially sliding on the annular member 303a1 and causing friction between the two. The mounting plate 303a8 is fixedly mounted on the back side of the end plate of the annular member 303a1, and at least one group of guide seats 303a9 is fixedly arranged on the mounting plate 303a8. Generally, two groups of guide seats 303a9 are arranged, and a guide hole is arranged in the center of the guide seat 303a9. The driving motor 303a4 is mounted on the back side of the vertical plate 301 through an inverted frame, and the output end of the driving motor 303a4 is fixedly mounted with a second gear 303a5 meshing with the first gear 303a3.

[0033] Embodiment 2 A TV back panel laser welding method, using a TV back panel laser welding device in embodiment 1, specifically comprises the following steps: S1. The magnetic attraction-telescopic-rotation assembly 303 is in an extended state, and the user / manipulator positions and installs the TV back panel a on the magnetic attraction-telescopic-rotation assembly 303.

[0034] S2, the clamping gap b of the positioning structure 302 is in an open state, the magnetic attraction-telescopic-rotational component 303 manipulates the TV back panel a to move toward the vertical plate 301, so that the side of the TV back panel a is stuck in the clamping gap b, the positioning structure 302 is actuated to clamp and position the side of the TV back panel a, and the laser welding component 2 is actuated to complete one welding.

[0035] Since two sets of side-pushing components are used to clamp toward the middle, when there is a slight position difference between the side panels of the TV back panel inward / outward, the side panels of the TV back panel can be inserted into the clamping gap, and then the positioning structure pushes the side panels of the TV back panel to the center plane of the clamping gap for positioning. This method has better fault tolerance, and since the first positioning unit and the second positioning unit are vertically distributed and there is no need to apply force to the side panels of the TV back panel at the corners, the first positioning unit and the second positioning unit will not affect the welding operation of the laser welding assembly, and the magnetic attraction-retraction-rotation assembly can be automatically operated to improve the automation and production efficiency of laser welding production of TV back panels.

[0036] S3, the positioning structure 302 is reset, so that the clamping gap b of the positioning structure 302 is in an open state, the magnetic attraction-telescopic-rotation component 303 manipulates the TV back panel a to move away from the vertical plate 301, and then the magnetic attraction-telescopic-rotation component 303 manipulates the TV back panel a to rotate 180°, and repeat step S2 to complete the secondary welding.

[0037] S4, the positioning structure 302 is reset, the clamping gap b of the positioning structure 302 is in an open state, the magnetic attraction-telescopic-rotating component 303 manipulates the TV back panel a to move away from the vertical panel 301, and the next TV back panel a is replaced and steps S1-S4 are performed again.

[0038] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A TV back panel laser welding device, comprising a substrate (1), characterized in that: A laser welding assembly (2) and a mounting platform assembly (3) are fixedly mounted on the base plate (1); two groups of the laser welding assembly (2) are provided, and the two groups of laser welding assemblies (2) are respectively arranged on both sides of the mounting platform assembly (3).

2. A TV back panel laser welding device according to claim 1, characterized in that: The mounting platform assembly (3) comprises: Vertical plate (301); A magnetic attraction-telescopic-rotational component (303) is installed at the center of the vertical plate (301) and is used to connect the television back plate (a) and control the television back plate (a) to rotate along an axis direction perpendicular to the front side surface of the vertical plate (301) and to move linearly along an axis direction perpendicular to the front side surface of the vertical plate (301).

3. A TV back panel laser welding device according to claim 1, characterized in that: A positioning structure (302), wherein the positioning structure (302) is installed on the front side of the vertical plate (301); The positioning structure (302) comprises a first positioning component (302a1) and a second positioning component (302a2) which are symmetrically distributed on both sides of the vertical plate (301).

4. A TV back panel laser welding device according to claim 1, characterized in that: The first positioning component (302a1) comprises a first positioning unit (302a1a) and a second positioning unit (302a1b), and the first positioning unit (302a1a) and the second positioning unit (302a1b) are vertically distributed; The first positioning unit (302a1a) comprises two groups of side-pushing assemblies (302a1a2) arranged in parallel and symmetrically, and a clamping gap (b) is formed between the two groups of side-pushing assemblies (302a1a2).

5. A TV back panel laser welding device according to claim 4, characterized in that: The laser welding assembly (2) comprises: a Y-axis moving assembly (201), an X-axis moving assembly (202), a Z-axis moving assembly (203), an A-axis rotating assembly (204), and a laser welding head (205).

6. A TV back panel laser welding device according to claim 5, characterized in that: The Y-axis moving assembly (201) and the X-axis moving assembly (202) are integrated in a box, and the X-axis moving assembly (202) is mounted on the action end of the Y-axis moving assembly (201), the bottom end of the Z-axis moving assembly (203) is fixedly mounted on the action end of the X-axis moving assembly (202), the A-axis rotating assembly (204) is fixedly mounted on the top telescopic end of the Z-axis moving assembly (203), and the laser welding head (205) is fixedly mounted on the output end of the A-axis rotating assembly (204).

7. A TV back panel laser welding device according to claim 6, characterized in that: A support frame (301a) is fixedly arranged at the bottom of the vertical plate (301), the support frame (301a) is fixedly connected to the base plate (1), and a mounting hole (301b) is provided at the center position of the front side surface of the vertical plate (301).

8. A TV back panel laser welding device according to claim 7, characterized in that: The magnetic attraction-telescopic-rotation assembly (303) comprises: A rotating assembly (303a), wherein the rotating assembly (303a) is installed on the inner side of the mounting hole (301b); A magnetic attraction component (303b), wherein the magnetic attraction component (303b) is slidably mounted with the rotating component (303a) along the axial direction of the rotating component (303a); A telescopic component (303c), wherein the telescopic component (303c) is mounted on the rotating component (303a), and a telescopic end of the telescopic component (303c) is fixedly mounted to the magnetic attraction component (303b).

9. A TV back panel laser welding device according to claim 8, characterized in that: The rotating assembly (303a) comprises: An annular member (303a1), wherein the center of the annular member (303a1) has an end plate, and a center hole (303a7) is opened on the center end plate of the annular member (303a1); the outer side of the annular member (303a1) has a cylindrical connecting portion, and the cylindrical connecting portion is rotatably mounted through a bearing ring (303a2) and a mounting hole (301b); A first gear (303a3), the first gear (303a3) being fixedly mounted on the cylindrical connecting portion of the annular member (303a1), and a limiting axis (303a6) being fixedly arranged on the cylindrical connecting portion of the annular member (303a1) and located between the first gear (303a3) and the bearing ring (303a2); A mounting plate (303a8), the mounting plate (303a8) being fixedly mounted on the back side of the end plate of the annular member (303a1), and at least one set of guide seats (303a9) being fixedly arranged on the mounting plate (303a8), and a guide hole being arranged at the center of the guide seat (303a9); A driving motor (303a4) is mounted on the back of the vertical plate (301) by means of a frame body, and a second gear (303a5) meshing with the first gear (303a3) is fixedly mounted on the output end of the driving motor (303a4).

10. A laser welding method for a TV back panel, characterized in that: Using a TV back panel laser welding device as described in any one of claims 1 to 9 specifically comprises the following steps: S1, the magnetic attraction-telescopic-rotation assembly (303) is in an extended state, and the user / manipulator positions and installs the TV back panel (a) on the magnetic attraction-telescopic-rotation assembly (303); S2, the clamping gap (b) of the positioning structure (302) is in an open state, the magnetic attraction-telescopic-rotating assembly (303) manipulates the TV back panel (a) to move closer to the vertical board (301), so that the side of the TV back panel (a) is inserted into the clamping gap (b), the positioning structure (302) is actuated to clamp and position the side of the TV back panel (a), and the laser welding assembly (2) is actuated to complete a welding operation; S3, the positioning structure (302) is reset, so that the clamping gap (b) of the positioning structure (302) is in an open state, the magnetic attraction-telescopic-rotation component (303) controls the TV back panel (a) to move away from the vertical panel (301), and then the magnetic attraction-telescopic-rotation component (303) controls the TV back panel (a) to rotate 180 degrees, and repeat step S2 to complete the secondary welding; S4, the positioning structure (302) is reset, the clamping gap (b) of the positioning structure (302) is in an open state, the magnetic attraction-telescopic-rotating assembly (303) manipulates the TV back panel (a) to move away from the vertical panel (301), and the next TV back panel (a) is replaced and steps S1-S4 are performed again.

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