Automatic Welding Device and Welding Method Based on Furniture Fitting Production Line

Abstract

The present invention relates to the technical field of furniture welding, and specifically discloses an automatic welding device and a welding method based on a furniture fitting production line, including a conveyor for conveying a metal frame to be welded; a clamping assembly for clamping parts on the metal frame to the welding position of the metal frame; a welding assembly for welding the parts and the metal frame to each other; and a reversing assembly arranged on one side of the conveyor for converting the placement direction of the metal frame. By rotating the clamping plate relative to the telescopic arm to make the clamping plate in a vertical state, the metal frame can be rotated by 90 degrees. Then the clamping plate releases the metal frame. Next, after the clamping plate is adjusted to a horizontal state, it clamps the metal frame again. Then the clamping plate continues to rotate by 90 degrees, and so on, so that the four faces of the metal frame can face upward respectively, thereby welding parts to each face of the metal frame.

Description

Technical Field

[0001] The present invention relates to the technical field of furniture welding, and particularly to an automatic welding device and a welding method based on a furniture accessory production line. Background Art

[0002] The automatic welding device for a furniture accessory production line is an important piece of equipment in modern furniture manufacturing. It greatly improves production efficiency, ensures product quality, and reduces production costs. The automatic welding device for a furniture accessory production line mainly consists of a welding robot, welding equipment, a production line control system, etc.; the welding robot is the core of the production line, and realizes automated welding operations through an advanced control system; it generally includes: 1. Welding equipment: provides the energy required for welding, such as a laser welding machine, a resistance welding machine, etc.; 2. Production line control system: usually adopts sophisticated programming technology to enable the welding robot to perform accurate welding according to preset welding trajectories and parameters. At the same time, the control system is also responsible for monitoring the operating status of the production line to ensure the stability and continuity of the production process;

[0003] For example, the patent of an electric bed frame robot welding production line disclosed in the prior art publication number: CN109759759B, its specification records: "including a conveying unit 101 and a flipping unit 102, the flipping unit 102 plays a role in flipping the electric bed frame to facilitate the welding of the electric bed frame, and its conveying unit 101 is arranged at both ends of the flipping unit 102; and a welding module 200, which is used to weld the electric bed frame, and is arranged on both sides of the conveying unit 101. Among them, the flipping unit 102 is divided into a first rotating component 102a and a second rotating component 102b, and the first rotating component 102a and the second rotating component 102b are used to flip the frame back and forth", but the above-mentioned prior art has the following deficiencies: when welding the frame, it is necessary to flip the frame multiple times to weld the parts on the frame, thereby increasing the length of the entire production line, which is not conducive to maintenance and operational convenience. Summary of the Invention

[0004] The purpose of this part is to outline some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part, as well as in the abstract and title of the present application, to avoid obscuring the purpose of this part, the abstract, and the title of the invention, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] The present invention provides an automatic welding device and a welding method based on a furniture accessory production line, which can solve the problems in the prior art that the production line is long, not conducive to maintenance, and has low convenience when flipping the frame. The specific solutions are as follows:

[0006] On the one hand, the present invention provides an automatic welding device based on a furniture fitting production line, including a welding mechanism. The welding mechanism is installed on the production line and is used for welding parts on a metal frame. The welding mechanism includes:

[0007] A conveyor for conveying the metal frame to be welded;

[0008] A clamping assembly arranged on one side of the conveyor for clamping the parts on the metal frame to the welding position of the metal frame;

[0009] A welding assembly installed on the other side of the conveyor for welding the parts and the metal frame to each other;

[0010] A commutation assembly arranged on one side of the conveyor for converting the placement direction of the metal frame, enabling the four faces of the metal frame to face upwards respectively, and welding the parts on the four faces of the metal frame separately.

[0011] Preferably, the clamping assembly includes:

[0012] A first base fixedly installed on the ground;

[0013] A first rotating seat rotatably installed on the top of the first base;

[0014] A first large arm fixedly installed on the top of the first rotating seat and rotating synchronously with the first rotating seat;

[0015] A first joint, the bottom of which is hinged to the top of the first large arm;

[0016] A second joint, one end of which is rotatably connected to the top of the first joint;

[0017] A first small arm, the top of which is hinged to the other end of the second joint;

[0018] A clamping hand, the top of which is fixedly connected to the bottom end of the first small arm for clamping the parts and then transporting the parts to the welding position of the metal frame.

[0019] Preferably, the welding assembly includes:

[0020] A second base fixedly installed on the ground;

[0021] A second rotating seat rotatably installed on the top of the second base;

[0022] A second large arm fixedly installed on the top of the second rotating seat and rotating synchronously with the second rotating seat;

[0023] The third joint, the bottom of the third joint is hinged to the top of the second upper arm;

[0024] The fourth joint, one end of the fourth joint is rotatably connected to the top of the third joint;

[0025] The second lower arm, the top of the second lower arm is hinged to the other end of the fourth joint;

[0026] The welding machine, the top of the welding machine is fixedly connected to the bottom end of the second lower arm. When the part is rotated by the clamping assembly to the metal frame and the end of the part is close to the metal frame, the welding machine works to weld the position where the part and the metal frame are joined.

[0027] Preferably, the commutation assembly includes:

[0028] The column, fixedly installed on the ground;

[0029] The telescopic arm, installed on one side of the column, one end of the telescopic arm extends above the metal frame;

[0030] The first telescopic member, the first telescopic member is installed at the end of the telescopic arm away from the metal frame, and the first telescopic member can drive the telescopic arm to approach and move away from the metal frame;

[0031] The clamping plate, the clamping plate is installed below the telescopic arm, and a fixture capable of clamping the metal frame is provided at the bottom of the clamping plate.

[0032] Preferably, the top of the clamping plate is connected to one end of the telescopic arm in a hinged manner. When the direction of the metal frame needs to be adjusted, by rotating the clamping plate and the telescopic arm relative to each other to make the clamping plate in a vertical state, the metal frame can be rotated by 90 degrees. Then the clamping plate releases the metal frame, and then after the clamping plate is adjusted to a horizontal state, it clamps the metal frame again, and then the clamping plate continues to rotate by 90 degrees, and so on, so that the four faces of the metal frame can face upward respectively, so as to weld parts on each face of the metal frame.

[0033] Preferably, the commutation assembly further includes:

[0034] The slider, the slider is installed in the middle of the column;

[0035] The second telescopic member, the second telescopic member is fixedly connected to the bottom of the slider, the bottom end of the second telescopic member is fixed to the bottom of the column, and the second telescopic member can drive the slider to slide up and down inside the column.

[0036] Preferably, the commutation assembly further includes:

[0037] A sliding sleeve, which is fixedly connected to the middle of the slider, and the telescopic arm is slidably connected to the sliding sleeve;

[0038] Hinge ears, there are two of them, which are respectively fixedly connected to the front and rear ends of the top of the clamping plate;

[0039] Hinge blocks, there are two of them, and the two hinge blocks are respectively hinged to the two hinge ears;

[0040] A synchronous rod, the two ends of which are respectively hinged to the two hinge blocks, and the two ends of the synchronous rod are rotatably connected to the hinge ears;

[0041] A first motor, which is fixedly installed on the outer wall of one of the hinge ears, and the output end of the first motor is fixedly connected to one end of the synchronous rod, and the first motor can drive the synchronous rod and the two hinge blocks to rotate synchronously;

[0042] Stop blocks, there are two of them, which are respectively installed at one end of the two hinge blocks;

[0043] Third telescopic members, there are two of them, and the two ends of the two third telescopic members are respectively connected to the stop blocks and the hinge blocks.

[0044] Preferably, the commutation assembly further includes:

[0045] A rotating seat, which is fixedly connected to the middle of the top of the clamping plate;

[0046] A rotating sleeve, which is fixedly connected to the end of the telescopic arm, and the rotating sleeve is rotatably connected to the rotating seat;

[0047] A worm gear, which is fixedly connected to the middle of the rotating seat;

[0048] A worm, which is rotatably connected to the end of the telescopic arm, and a second motor is fixedly installed on the top of the telescopic arm, and the output shaft of the second motor is fixedly connected to the top end of the worm.

[0049] Preferably, the commutation assembly further includes:

[0050] Clamping blocks, there are two of them, which are respectively arranged at both ends of the bottom of the clamping plate;

[0051] Moving grooves, there are two of them, which are respectively opened at both ends of the clamping plate, and the middle parts of the two clamping blocks are respectively rotatably connected to the middle parts of the inner walls of the two moving grooves;

[0052] Protrusions, there are two of them, and the two protrusions are respectively connected to the inner sides of the two clamping blocks;

[0053] Sealing cavities, there are two of them, which are opened inside the clamping plate and are respectively communicated with the inside of the two moving grooves;

[0054] The sealing rods, there are two of them, are respectively fixedly connected to the two clamping blocks, and the sealing rods are slidably connected to the sealing cavity;

[0055] The air pressure holes, one end of which is communicated with the inside of the sealing cavity, and the other end of the air pressure holes penetrates through the top end of the clamping plate;

[0056] The air pressure tubes are fixedly connected to the top ends of the air pressure holes.

[0057] On the other hand, the present invention provides an automatic welding method based on a furniture accessory production line, including the following steps:

[0058] S1. Place the metal frame on the conveyor, and convey the parts to one side of the clamping assembly through another conveying device;

[0059] S2. The clamping assembly clamps the parts to the welding position of the metal frame;

[0060] S3. The welding assembly welds the parts to the metal frame;

[0061] S4. When one side of the metal frame is welded, the commutation assembly drives the metal frame to rotate by ninety degrees to weld the other side of the metal frame until all four sides of the metal frame are welded.

[0062] Compared with the prior art, the present invention can at least achieve one of the following beneficial effects:

[0063] 1. By allowing the clamping plate and the telescopic arm to rotate relative to each other to make the clamping plate in a vertical state, the metal frame can be rotated by ninety degrees. Then the clamping plate releases the metal frame, and then after the clamping plate is adjusted to a horizontal state, it clamps the metal frame again. Then the clamping plate continues to rotate by ninety degrees, and so on, so that the four sides of the metal frame can face upward respectively, thereby welding the parts to each side of the metal frame.

[0064] 2. By using one commutation assembly, welding assembly and clamping assembly, it is possible to weld the parts on the entire metal frame on a shorter work station, which improves the operation convenience compared with the prior art, and because the work station is short, it is also superior to the prior art in terms of maintenance.

[0065] 3. By setting the stop block, during the welding work, the stop block can block one end of the metal frame to limit the position of the metal frame within a certain range, so as to facilitate the welding assembly to weld the parts on the metal frame and improve the welding efficiency.

[0066] 4. By arranging two symmetric clamping blocks below the clamping plate and respectively cooperating with the two clamping blocks through the support blocks, when adjusting the angle of the metal frame, the two metal rods at the top of the metal frame can be individually clamped by the two clamping blocks and the two support blocks. And since the clamping plate is made of a hard material and is not easily deformed, when adjusting the angle of the metal frame, the deformation of the metal frame can be avoided.

[0067] Other features and advantages of the present invention will be described in the subsequent description of the specification, and some of them will be obvious from the specification or understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the structures specifically pointed out in the written specification and the accompanying drawings. Brief Description of the Drawings

[0068] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other accompanying drawings can be obtained based on these drawings without creative efforts. Among them:

[0069] Figure 1 Is the overall three-dimensional view of the present invention;

[0070] Figure 2 Is the schematic diagram of the working state of the present invention;

[0071] Figure 3 Is the schematic diagram of the conveyor, welding assembly, clamping assembly and commutation assembly of the present invention;

[0072] Figure 4 Is the schematic diagram of the clamping assembly of the present invention;

[0073] Figure 5 Is the schematic diagram of the welding assembly of the present invention;

[0074] Figure 6 Is the three-dimensional view of the commutation assembly, conveyor and metal frame of the present invention;

[0075] Figure 7 Is the three-dimensional view of the commutation assembly and metal frame of the present invention;

[0076] Figure 8 Is the three-dimensional view of the commutation assembly of the present invention;

[0077] Figure 9 Is the other three-dimensional view of the commutation assembly of the present invention;

[0078] Figure 10 Is the exploded view of the commutation assembly of the present invention;

[0079] Figure 11 Schematic diagram of the stopper of the present invention;

[0080] Figure 12 Cross-sectional view of the clamping plate of the present invention;

[0081] Figure 13 Schematic diagram of the commutation process of the telescopic arm, clamping plate and metal frame of the present invention;

[0082] Figure 14 Schematic diagram of the commutation process of the commutation component and the metal frame of the present invention.

[0083] Among them, the reference numerals are as follows:

[0084] 100, clamping assembly; 101, first base; 102, first rotating seat; 103, first boom; 104, first joint; 105, second joint; 106, first forearm; 107, clamping hand;

[0085] 200, welding assembly; 201, second base; 202, second rotating seat; 203, second boom; 204, third joint; 205, fourth joint; 206, second forearm; 207, welding machine;

[0086] 300, conveyor;

[0087] 400, commutation component; 401, column; 402, telescopic arm; 403, first telescopic member; 404, slider; 405, clamping plate; 406, sliding sleeve; 407, hinge ear; 408, hinge block; 409, synchronizing rod; 410, stopper; 411, third telescopic member; 412, first motor; 413, rotating seat; 414, rotating sleeve; 415, worm gear; 416, worm; 417, second motor; 418, movable groove; 419, clamping block; 420, support block; 421, convex block; 422, sealing cavity; 423, sealing rod; 424, air pressure hole; 425, air pressure pipe; 426, second telescopic member;

[0088] 500, metal frame; 501, part. Specific embodiments

[0089] The following will specifically describe the preferred embodiments of the present invention with reference to the accompanying drawings, in which the accompanying drawings form a part of the present invention and are used together with the embodiments of the present invention to explain the principles of the present invention.

[0090] Embodiment 1: As shown in Figure 1 , Figure 2 , Figure 3As shown in the figure, the present embodiment provides an automatic welding device based on a furniture accessory production line, which can weld the parts 501 on the metal frame 500 to the metal frame 500. The automatic welding device based on the furniture accessory production line includes:

[0091] A conveyor 300, installed on the ground, for conveying the metal frame 500 to be welded. The conveyor 300 is a roller type. The roller type conveyor is mainly composed of a series of parallel rollers, which are usually installed on a frame or a bracket, and are driven by a driving device (such as a motor) to drive the rollers to rotate, so as to realize the continuous conveying of materials, and thus convey the metal frame 500;

[0092] A clamping assembly 100, arranged on one side of the conveyor 300, for clamping the parts 501 on the metal frame 500 to the welding position of the metal frame 500. The clamping assembly 100 is composed of a robotic arm and a manipulator, and can realize multi-axis movement, so as to accurately clamp the parts 501 to the welding position of the metal frame 500, realize accurate welding, and do not require manual placement;

[0093] A welding assembly 200, installed on the other side of the conveyor 300, for welding the parts 501 and the metal frame 500 to each other;

[0094] A reversing assembly 400, arranged on one side of the conveyor 300, for converting the placement direction of the metal frame 500, and can make the four faces of the metal frame 500 face up respectively, so as to weld the parts 501 on the four faces of the metal frame 500 respectively.

[0095] As Figure 4 shown, the clamping assembly 100 includes:

[0096] A first base 101, fixedly installed on the ground;

[0097] A first rotating seat 102, rotatably installed on the top of the first base 101;

[0098] A first large arm 103, fixedly installed on the top of the first rotating seat 102, and rotates synchronously with the first rotating seat 102;

[0099] A first joint 104, the bottom of the first joint 104 is hinged to the top of the first large arm 103;

[0100] A second joint 105, one end of the second joint 105 is rotatably connected to the top of the first joint 104;

[0101] A first small arm 106, the top of the first small arm 106 is hinged to the other end of the second joint 105;

[0102] The gripper 107, the top of the gripper 107 is fixedly connected to the bottom end of the first forearm 106. The gripper 107 consists of two clamping joints, and the two clamping joints can approach or move away from each other. When the two clamping joints approach each other, they can clamp the part 501, and then through the movement of the clamping assembly 100, the part 501 is transported to the welding position of the metal frame 500. Finally, the part 501 and the metal frame 500 are welded together by the welding assembly 200.

[0103] As Figure 5 shown, the welding assembly 200 includes:

[0104] The second base 201, fixedly installed on the ground;

[0105] The second rotating seat 202, rotatably installed on the top of the second base 201;

[0106] The second big arm 203, fixedly installed on the top of the second rotating seat 202, and rotates synchronously with the second rotating seat 202;

[0107] The third joint 204, the bottom of the third joint 204 is hinged to the top of the second big arm 203;

[0108] The fourth joint 205, one end of the fourth joint 205 is rotatably connected to the top of the third joint 204;

[0109] The second forearm 206, the top of the second forearm 206 is hinged to the other end of the fourth joint 205;

[0110] The welding machine 207, the top of the welding machine 207 is fixedly connected to the bottom end of the second forearm 206. When the part 501 is rotated to the metal frame 500 by the clamping assembly 100 and the end of the part 501 is close to the metal frame 500, the welding machine 207 works to weld the position where the part 501 and the metal frame 500 are joined;

[0111] It should be noted that the welding machine 207 can be one of the following:

[0112] One, AC welding machine

[0113] The AC welding machine is essentially a special step-down transformer. The welding rod and the welded part are respectively connected to the two output terminals of the power supply. During welding, by changing the length of the air gap of the reactor, the output current of the transformer can be adjusted to meet different welding requirements. When the welding rod and the welded part are in contact, the power supply is short-circuited. At this time, the current at the contact point is very large. Due to the relatively large contact resistance at the contact point, a large amount of heat will be generated at the contact point. Then, slightly lift the welding rod to create a certain gap between the welding rod and the welded part. At this time, an arc will appear at the gap, and the high temperature of the arc can melt and weld the melted welding rod and the welded part together;

[0114] II. DC arc welding machine

[0115] The working principle of a DC arc welding machine is relatively more complex. First, alternating current is rectified and filtered into direct current. To improve the welding performance, dynamic response speed, and efficiency of the welding machine, the direct current needs to be inverted into medium-high frequency low-voltage alternating current through high-power thyristors, and then rectified to output a stable direct current. Since the inductive reactance of medium-high frequency alternating current is greater than that of power frequency alternating current, the core and number of turns of the transformer can be reduced, the response speed is faster, and it is easier and more stable to strike an arc;

[0116] III. TIG welding machine

[0117] The working principle of a TIG welding machine is mainly to use an inert gas (argon) as a shielding gas, and an arc is generated between the tungsten electrode and the workpiece to melt the base metal and the filler wire, thereby achieving welding. TIG welding machines can be divided into various types such as manual AC tungsten electrode TIG welding machines, manual DC tungsten electrode TIG welding machines, and MIG automatic TIG welding machines. When welding, after the main switch of the welding machine is closed, the auxiliary power supply works to provide direct current to the control circuit. When the hand switch is closed, the circuit starts to output power, and the current generates high temperature through the arc between the welding torch and the workpiece, melting the workpiece and filling the weld seam. At the same time, argon gas is used as a shielding gas to prevent the weld seam from being affected by harmful gases such as oxygen and nitrogen in the air, thereby ensuring the welding quality;

[0118] IV. Laser welding machine

[0119] Welding is carried out using a laser beam as a heat source, which is suitable for welding occasions with high-precision and high-quality requirements.

[0120] Such as Figure 6 、 Figure 7 、 Figure 8 As shown, the commutation assembly 400 includes:

[0121] A column 401, fixedly installed on the ground, providing a supporting force for the entire commutation assembly 400;

[0122] A telescopic arm 402, installed on one side of the column 401, with one end of the telescopic arm 402 extending above the metal frame 500;

[0123] A first telescopic member 403, installed at the end of the telescopic arm 402 away from the metal frame 500, and the first telescopic member 403 can drive the telescopic arm 402 to approach and move away from the metal frame 500 in the direction of the metal frame 500;

[0124] The clamping plate 405 is installed below the telescopic arm 402. A fixture capable of clamping the metal frame 500 is provided at the bottom of the clamping plate 405. The top of the clamping plate 405 is hinged to one end of the telescopic arm 402. When it is necessary to adjust the direction of the metal frame 500, by rotating the clamping plate 405 and the telescopic arm 402 relative to each other to make the clamping plate 405 in a vertical state, the metal frame 500 can be driven to rotate by 90 degrees. Then the clamping plate 405 releases the metal frame 500. Next, after the clamping plate 405 is adjusted to a horizontal state, it clamps the metal frame 500 again. Then the clamping plate 405 continues to rotate by 90 degrees, and so on, so that the four faces of the metal frame 500 can face upward respectively, thereby welding the parts 501 to each face of the metal frame 500;

[0125] As Figure 9 shown, the commutation assembly 400 further includes:

[0126] A slider 404 is installed in the middle of the column 401. Correspondingly, a chute is provided in the middle of the column 401, and the slider 404 is slidably connected to the chute;

[0127] A second telescopic member 426 is fixedly connected to the bottom of the slider 404. The bottom end of the second telescopic member 426 is fixed to the bottom of the column 401. The second telescopic member 426 can drive the slider 404 to slide up and down inside the column 401, so as to adjust the height of the clamping plate 405;

[0128] In the above solution, when the clamping plate 405 drives the metal frame 500 to rotate, the metal frame 500 cannot be kept in the middle of the conveyor 300. Therefore, through the action of the first telescopic member 403, before the clamping plate 405 puts down the metal frame 500, the first telescopic member 403 drives the telescopic arm 402 and the clamping plate 405 to approach the column 401, so that the metal frame 500 is always directly above the conveyor 300;

[0129] As Figure 10 、 Figure 11 shown, the commutation assembly 400 further includes:

[0130] A sliding sleeve 406 is fixedly connected to the middle of the slider 404. The telescopic arm 402 is slidably connected to the sliding sleeve 406. By providing the sliding sleeve 406, the telescopic arm 402 can slide more smoothly without shaking up and down, ensuring the smoothness of the sliding process;

[0131] There are two hinge ears 407, which are respectively fixedly connected to the front and rear ends of the top of the clamping plate 405;

[0132] The articulated blocks 408, there are two of them, and the two articulated blocks 408 are respectively articulated with the two articulated ears 407;

[0133] The synchronizing rod 409, its two ends are respectively articulated with the two articulated blocks 408, and the two ends of the synchronizing rod 409 are rotatably connected with the articulated ears 407;

[0134] The first motor 412, fixedly installed on the outer wall of one of the articulated ears 407, the output end of the first motor 412 is fixedly connected with one end of the synchronizing rod 409, and the first motor 412 can drive the synchronizing rod 409 and the two articulated blocks 408 to rotate synchronously;

[0135] The stop blocks 410, there are two of them, respectively installed at one end of the two articulated blocks 408;

[0136] The third telescopic members 411, there are two of them, and the two ends of the two third telescopic members 411 are respectively connected with the stop blocks 410 and the articulated blocks 408;

[0137] In the above solution, by setting the stop blocks 410, after the metal frame 500 is conveyed in place by the conveyor 300, by setting the length of the third telescopic members 411, and then driving the articulated blocks 408 and the stop blocks 410 to rotate through the first motor 412, the stop blocks 410 block one end of the metal frame 500, so that the metal frame 500 plays a role in limiting, preventing the position of the metal frame 500 from shifting during the welding process and affecting the welding effect;

[0138] As Figure 10 shown, the commutation assembly 400 further includes:

[0139] The rotating seat 413, fixedly connected to the middle of the top of the clamping plate 405;

[0140] The rotating sleeve 414, fixedly connected to the end of the telescopic arm 402, and the rotating sleeve 414 is rotatably connected with the rotating seat 413;

[0141] The worm gear 415, fixedly connected to the middle of the rotating seat 413;

[0142] The worm 416, rotatably connected to the end of the telescopic arm 402, and a second motor 417 is fixedly installed on the top of the telescopic arm 402, and the output shaft of the second motor 417 is fixedly connected to the top end of the worm 416;

[0143] As Figure 12 、 Figure 13 、 Figure 14 shown, the fixture at the bottom of the clamping plate 405 includes:

[0144] The clamping blocks 419, there are two of them, respectively arranged at both ends of the bottom of the clamping plate 405;

[0145] The movable slots 418 are provided with two, which are respectively opened at both ends of the clamping plate 405. The middle parts of the two clamping blocks 419 are respectively rotatably connected to the middle parts of the inner walls of the two movable slots 418, and the clamping blocks 419 can rotate within a certain range in the movable slots 418;

[0146] The convex blocks 421 are provided with two. The two convex blocks 421 are respectively connected to the inner sides of the two clamping blocks 419. The steps formed by the convex blocks 421 can hook the metal frame 500 to prevent the metal frame 500 from detaching from the clamping plate 405 when lifting;

[0147] The sealing cavities 422 are provided with two, which are opened inside the clamping plate 405 and are respectively communicated with the inside of the two movable slots 418;

[0148] The sealing rods 423 are provided with two, which are respectively fixedly connected to the two clamping blocks 419. The sealing rods 423 are slidably connected to the sealing cavities 422;

[0149] One end of the air pressure hole 424 is communicated with the inside of the sealing cavity 422, and the other end of the air pressure hole 424 penetrates through the top end of the clamping plate 405;

[0150] The air pressure pipe 425 is fixedly connected to the top end of the air pressure hole 424. The other end of the air pressure pipe 425 is connected to the air source. When the air source is started, high-pressure gas can be generated, and the high-pressure gas can be injected into the inside of the sealing cavity 422, thereby driving the sealing rod 423 to slide in the sealing cavity 422, so that the entire clamping block 419 rotates, and the two clamping blocks 419 approach each other to clamp the metal frame 500;

[0151] As a possible embodiment, support blocks 420 are further provided at the bottom of the clamping plate 405. There are two support blocks 420, and the two support blocks 420 are respectively arranged inside the two clamping blocks 419. When the two clamping blocks 419 approach each other, they can cooperate with the support blocks 420 to clamp both ends of the metal frame 500, so that the clamping force can be dispersed on the metal rods of the metal frame 500, thereby avoiding clamping deformation of the metal frame 500 by direct clamping.

[0152] Embodiment 2: The technical solution of this embodiment is different from that of Embodiment 1 in that this embodiment provides an automatic welding device based on a furniture accessory production line, including the following steps:

[0153] S1. Place the metal frame 500 on the conveyor 300, and convey the part 501 to one side of the clamping assembly 100 through another conveying device;

[0154] S2. The clamping assembly 100 clamps the part 501 to the welding position of the metal frame 500;

[0155] S3. The welding assembly 200 welds the part 501 to the metal frame 500;

[0156] S4. When one side of the metal frame 500 is welded, the commutation assembly 400 drives the metal frame 500 to rotate by ninety degrees to weld the other side of the metal frame 500 until all four sides of the metal frame 500 are welded.

[0157] In the description of this specification, the descriptions with reference to the terms "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0158] The terms "first", "second", "third", "fourth", etc. (if any) in the description of the embodiments of this application, the specification and the claims, and the above drawings are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the embodiments of this application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0159] In the embodiments of this application, it is not to be understood that the devices or elements indicated or implied must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be regarded as a limitation to the embodiments of this application. In the description of the embodiments of this application, the meaning of "a plurality" is two or more unless otherwise specifically and precisely defined.

[0160] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. The present specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present invention, so that those skilled in the art in the relevant technical field can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. An automatic welding device based on a furniture parts production line, comprising a welding mechanism, the welding mechanism being installed on the production line and used for welding parts (501) on a metal frame (500), characterized in that: Welding mechanism includes: A conveyor (300) for conveying the metal frame (500) to be welded; A clamping assembly (100) is arranged on one side of the conveyor (300) and is used to clamp the parts (501) on the metal frame (500) to a welding position of the metal frame (500); A welding assembly (200) is installed on the other side of the conveyor (300) and is used to weld the parts (501) and the metal frame (500) to each other; A reversing assembly (400) is arranged on one side of the conveyor (300) and is used to change the placement direction of the metal frame (500), so that the four surfaces of the metal frame (500) can be placed upwards respectively, and the parts (501) on the four surfaces of the metal frame (500) can be welded respectively; The reversing assembly (400) comprises: A column (401) is fixedly installed on the ground; A telescopic arm (402) is installed on one side of the column (401), and one end of the telescopic arm (402) extends above the metal frame (500); A first telescopic member (403), the first telescopic member (403) being mounted on an end of the telescopic arm (402) away from the metal frame (500), and the first telescopic member (403) being capable of driving the telescopic arm (402) to move toward or away from the metal frame (500); A clamping plate (405), the clamping plate (405) is installed below the telescopic arm (402), and a clamp capable of clamping the metal frame (500) is provided at the bottom of the clamping plate (405); There are two hinged ears (407), which are respectively fixedly connected to the front and rear ends of the top of the clamping plate (405); There are two hinge blocks (408), and the two hinge blocks (408) are hinged to the two hinge ears (407) respectively; A synchronization rod (409), both ends of which are respectively hinged to the two hinge blocks (408), and both ends of the synchronization rod (409) are rotatably connected to the hinge ears (407); A first motor (412) is fixedly mounted on the outer wall of one of the hinged ears (407), an output end of the first motor (412) is fixedly connected to one end of the synchronization rod (409), and the first motor (412) can drive the synchronization rod (409) and the two hinged blocks (408) to rotate synchronously; There are two stoppers (410), which are respectively installed at one end of the two hinge blocks (408); The third telescopic members (411) include two, and two ends of the two third telescopic members (411) are respectively connected to the stopper (410) and the hinge block (408).

2. The automatic welding device based on the furniture parts production line according to claim 1 is characterized in that: The clamping assembly (100) comprises: A first base (101) is fixedly mounted on the ground; A first rotating seat (102) rotatably mounted on the top of the first base (101); A first large arm (103) is fixedly mounted on the top of the first rotating seat (102) and rotates synchronously with the first rotating seat (102); A first joint (104), the bottom of the first joint (104) being hinged to the top of the first large arm (103); a second joint (105), one end of the second joint (105) being rotatably connected to the top of the first joint (104); A first forearm (106), wherein the top of the first forearm (106) is hingedly connected to the other end of the second joint (105); A clamping hand (107), the top of which is fixedly connected to the bottom of the first forearm (106), and is used to clamp the part (501) and then transfer the part (501) to a welding position of the metal frame (500).

3. The automatic welding device based on the furniture parts production line according to claim 1, characterized in that: The welding assembly (200) comprises: A second base (201) is fixedly mounted on the ground; A second rotating seat (202) rotatably mounted on the top of the second base (201); A second large arm (203) is fixedly mounted on the top of the second rotating seat (202) and rotates synchronously with the second rotating seat (102); A third joint (204), the bottom of the third joint (204) being hinged to the top of the second large arm (203); a fourth joint (205), one end of the fourth joint (205) being rotatably connected to the top of the third joint (204); a second forearm (206), the top of the second forearm (206) being hinged to the other end of the fourth joint (205); A welding machine (207), wherein the top of the welding machine (207) is fixedly connected to the bottom of the second small arm (206); when the part (501) is rotated onto the metal frame (500) by the clamping assembly (100), and the end of the part (501) is close to the metal frame (500), the welding machine (207) works to weld the position where the part (501) and the metal frame (500) are connected.

4. The automatic welding device based on the furniture parts production line according to claim 1, characterized in that: The top of the clamping plate (405) is connected to one end of the telescopic arm (402) in a hinged manner. When the direction of the metal frame (500) needs to be adjusted, the clamping plate (405) and the telescopic arm (402) are rotated relative to each other so that the clamping plate (405) is in a vertical state, which can drive the metal frame (500) to rotate ninety degrees. Then, the clamping plate (405) releases the metal frame (500). Then, the clamping plate (405) is adjusted to a horizontal state and then clamps the metal frame (500) again. Then, the clamping plate (405) continues to rotate ninety degrees. In this reciprocating manner, the four surfaces of the metal frame (500) can be respectively facing upwards, so that the parts (501) are welded to each surface of the metal frame (500).

5. The automatic welding device based on the furniture parts production line according to claim 1, characterized in that: The reversing assembly (400) further includes: A slider (404), the slider (404) being installed in the middle of the column (401); A second telescopic member (426), wherein the second telescopic member (426) is fixedly connected to the bottom of the slider (404), and the bottom end of the second telescopic member (426) is fixed to the bottom of the column (401). The second telescopic member (426) can drive the slider (404) to slide up and down inside the column (401).

6. The automatic welding device based on the furniture parts production line according to claim 5, characterized in that: The reversing assembly (400) further includes: A sliding sleeve (406) is fixedly connected to the middle part of the sliding block (404), and the telescopic arm (402) is slidably connected to the sliding sleeve (406).

7. The automatic welding device based on the furniture parts production line according to claim 1, characterized in that: The reversing assembly (400) further includes: A rotating seat (413) fixedly connected to the middle of the top of the clamping plate (405); A rotating sleeve (414) is fixedly connected to the end of the telescopic arm (402), and the rotating sleeve (414) is rotatably connected to the rotating seat (413); A worm wheel (415) fixedly connected to the middle portion of the rotating seat (413); A worm (416) is rotatably connected to the end of the telescopic arm (402); a second motor (417) is fixedly mounted on the top of the telescopic arm (402); and an output shaft of the second motor (417) is fixedly connected to the top of the worm (416).

8. The automatic welding device based on the furniture parts production line according to claim 1, characterized in that: The reversing assembly (400) further includes: There are two clamping blocks (419), which are respectively arranged at two ends of the bottom of the clamping plate (405); There are two movable grooves (418), which are respectively opened at the two ends of the clamping plate (405), and the middle parts of the two clamping blocks (419) are rotatably connected to the middle parts of the inner walls of the two movable grooves (418); There are two protrusions (421), and the two protrusions (421) are respectively connected to the inner sides of the two clamping blocks (419); Two sealing cavities (422) are provided inside the clamping plate (405) and are respectively connected to the insides of the two movable grooves (418); There are two sealing rods (423), which are respectively fixedly connected to the two clamping blocks (419), and the sealing rods (423) are slidably connected to the sealing cavity (422); An air pressure hole (424), one end of which is in communication with the interior of the sealing cavity (422), and the other end of which is in communication with the top end of the clamping plate (405); The air pressure tube (425) is fixedly connected to the top end of the air pressure hole (424).

9. An automatic welding method based on a furniture parts production line, using the automatic welding device based on a furniture parts production line according to any one of claims 1 to 8, characterized in that: The steps include: S1, placing the metal frame (500) on the conveyor (300), and conveying the part (501) to one side of the clamping assembly (100) through another conveying device; S2, the clamping assembly (100) clamps the part (501) to the welding position of the metal frame (500); S3, the welding assembly (200) welds the part (501) to the metal frame (500); S4. When the welding of one side of the metal frame (500) is completed, the reversing assembly (400) drives the metal frame (500) to rotate 90 degrees, and performs welding on the other side of the metal frame (500) until all four sides of the metal frame (500) are welded.

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