Automatic welding device and welding method based on furniture fitting production line

Abstract

The invention relates to the technical field of furniture welding, and particularly discloses an automatic welding device and method based on a furniture accessory production line, and the automatic welding device comprises a conveyor used for conveying a metal frame to be welded; the clamping assembly is used for clamping a part on the metal frame to a welding position of the metal frame; the welding assembly is used for mutually welding the part and the metal frame; the reversing assembly is arranged on one side of the conveyor and used for converting the placing direction of the metal frame. The clamping plate and the telescopic arm mutually rotate, so that the clamping plate is in a vertical state, the metal frame can be driven to rotate by 90 degrees, then the clamping plate loosens the metal frame, the clamping plate is adjusted to be in a horizontal state and then clamps the metal frame again, then the clamping plate continues to rotate by 90 degrees, and the operation is repeated in sequence. The four faces of the metal frame can face upwards, and therefore part welding is conducted on each face of the metal frame.

Description

Technical Field

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

[0002] The automatic welding device of the furniture parts production line is an important equipment in the modern furniture manufacturing industry. It greatly improves production efficiency, ensures product quality, and reduces production costs. The automatic welding device of the furniture parts production line is mainly composed of welding robots, welding equipment, production line control systems, etc.; the welding robot is the core of the production line, and the advanced control system is used to realize automatic welding operations; usually including: 1. Welding equipment: providing the energy required for welding, such as laser welding machines, resistance welding machines, etc.; 2. Production line control system: usually using sophisticated programming technology, so that the welding robot can accurately weld according to the preset welding trajectory 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; For example, the patent of a robot welding production line for an electric bed frame disclosed in the prior art publication number: CN109759759B, its specification states: "It includes a conveying unit 101 and a flipping unit 102, the flipping unit 102 is used to flip the electric bed frame to facilitate the welding of the electric bed frame, and the conveying unit 101 is arranged at both ends of the flipping unit 102; and the welding module 200 is used to weld the electric bed frame, which is arranged on both sides of the conveying unit 101, wherein 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." However, the above-mentioned prior art has the disadvantage that when welding the frame, it is necessary to weld the parts on the frame through multiple flippings, thereby increasing the length of the entire production line, which is not conducive to maintenance and convenience of operation. Summary of the invention

[0003] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0004] The present invention provides an automatic welding device and welding method based on a furniture parts production line, which can solve the problems of the prior art that the production line is long, unfavorable for maintenance and low convenience when the frame is turned over. The specific scheme is as follows: On the one hand, the present invention provides an automatic welding device based on a furniture accessories production line, including a welding mechanism, which is installed on the production line and is used to weld parts on a metal frame, and the welding mechanism includes: Conveyor, used to transport the metal frames to be welded; A clamping assembly, disposed on one side of the conveyor, for clamping the parts on the metal frame to a welding position of the metal frame; A welding assembly, installed on the other side of the conveyor, for welding the parts to the metal frame; The reversing assembly is arranged on one side of the conveyor and is used to change the placement direction of the metal frame so that the four sides of the metal frame can be placed upward respectively, and the parts on the four sides of the metal frame can be welded respectively.

[0005] Preferably, the clamping assembly comprises: The first base is fixedly installed on the ground; A first rotating seat, rotatably mounted on the top of the first base; A first large arm, fixedly mounted on the top of the first rotating seat, and rotating synchronously with the first rotating seat; A first joint, wherein the bottom of the first joint is hinged to the top of the first arm; a second joint, one end of the second joint being rotatably connected to the top of the first joint; A first forearm, wherein the top of the first forearm is hinged to the other end of the second joint; A clamping hand, the top of which is fixedly connected to the bottom end of the first forearm, is used to clamp the parts and then transfer the parts to the welding position of the metal frame.

[0006] Preferably, the welding assembly comprises: The second base is fixedly installed on the ground; A second rotating seat, rotatably mounted on the top of the second base; A second large arm is fixedly mounted on the top of the second rotating seat and rotates synchronously with the second rotating seat; a third joint, the bottom of the third joint being hinged to the top of the second arm; a fourth joint, one end of the fourth joint being rotatably connected to the top of the third joint; A second forearm, the top of the second forearm being hinged to the other end of the fourth joint; A welding machine, the top of which is fixedly connected to the bottom end of the second small arm. When the part is rotated onto the metal frame by the clamping assembly 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 connected.

[0007] Preferably, the reversing assembly comprises: Column, fixedly installed on the ground; A telescopic arm is installed on one side of the column, and one end of the telescopic arm extends above the metal frame; A first telescopic member, the first telescopic member is installed at an end of the telescopic arm away from the metal frame, and the first telescopic member can drive the telescopic arm to move toward the metal frame and away from the metal frame; A clamping plate is installed below the telescopic arm, and a clamp capable of clamping the metal frame is provided at the bottom of the clamping plate.

[0008] Preferably, the top of the clamping plate is hingedly connected to one end of the telescopic arm. When the direction of the metal frame needs to be adjusted, the clamping plate and the telescopic arm are rotated relative to each other so that the clamping plate is in a vertical state, which can drive the metal frame to rotate ninety degrees. The clamping plate then releases the metal frame, and then the clamping plate is adjusted to a horizontal state and the metal frame is clamped again. The clamping plate then continues to rotate ninety degrees, and this reciprocating process allows the four surfaces of the metal frame to face upwards respectively, so that parts can be welded on each surface of the metal frame.

[0009] Preferably, the reversing assembly further comprises: A slider, the slider being installed in the middle of the column; 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 ground, and the second telescopic member can drive the slider to slide up and down inside the column.

[0010] Preferably, the reversing assembly further comprises: A sliding sleeve, wherein the sliding sleeve is fixedly connected to the middle portion of the sliding block, and the telescopic arm is slidably connected to the sliding sleeve; There are two hinged ears, which are fixedly connected to the front and rear ends of the top of the clamping plate respectively; There are two hinge blocks, and the two hinge blocks are hinged to the two hinge ears respectively; A synchronization rod, both ends of which are respectively hinged to the two hinge blocks, and both ends of the synchronization rod are rotatably connected to the hinge ears; A first motor is fixedly mounted on the outer wall of one of the hinged ears, an output end of the first motor is fixedly connected to one end of the synchronization rod, and the first motor can drive the synchronization rod and the two hinge blocks to rotate synchronously; There are two stoppers, which are respectively mounted on one end of the two hinge blocks; The third telescopic members are provided with two, and both ends of the two third telescopic members are respectively connected with the stopper and the hinge block.

[0011] Preferably, the reversing assembly further comprises: A rotating seat, fixedly connected to the middle of the top of the clamping plate; A rotating sleeve, fixedly connected to the end of the telescopic arm, the rotating sleeve being rotatably connected to the rotating seat; A worm wheel, fixedly connected to the middle part of the worm wheel; A worm is rotatably connected to the end of the telescopic arm, a second motor is fixedly installed on the top of the telescopic arm, and an output shaft of the second motor is fixedly connected to the top end of the worm.

[0012] Preferably, the reversing assembly further comprises: There are two clamping blocks, which are respectively arranged at two ends of the bottom of the clamping plate; There are two movable grooves, which are respectively opened at the two ends of the clamping plate, and the middle parts of the two clamping blocks are rotatably connected to the middle parts of the inner walls of the two movable grooves respectively; There are two protrusions, and the two protrusions are respectively connected to the inner sides of the two clamping blocks; There are two sealed cavities, which are arranged inside the clamping plate and are respectively connected with the insides of the two movable grooves; There are two sealing rods, which are fixedly connected to the two clamping blocks respectively, and the sealing rods are slidably connected to the sealing cavity; An air pressure hole, one end of which is connected to the interior of the sealing cavity, and the other end of which is connected to the top end of the clamping plate; The air pressure tube is fixedly connected to the top end of the air pressure hole.

[0013] On the other hand, the present invention provides an automatic welding method based on a furniture parts production line, comprising the steps of: S1. Place the metal frame on the conveyor and convey the parts to one side of the clamping assembly through another conveying device; S2, the clamping assembly clamps the parts to the welding position of the metal frame; S3, welding assembly to weld the parts to the metal frame; S4. After the welding of one side of the metal frame is completed, the reversing assembly drives the metal frame to rotate 90 degrees, and the welding work is performed on the other side of the metal frame until all four sides of the metal frame are welded.

[0014] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects: 1. By rotating the clamping plate and the telescopic arm relative to each other, the clamping plate is in a vertical state, which can drive the metal frame to rotate 90 degrees. Then the clamping plate releases the metal frame, and then the clamping plate is adjusted to a horizontal state and the metal frame is clamped again. Then the clamping plate continues to rotate 90 degrees, and repeats this process in turn, so that the four sides of the metal frame can face upwards respectively, so that parts can be welded on each side of the metal frame.

[0015] 2. By using a reversing assembly, a welding assembly and a clamping assembly, the welding of parts on the entire metal frame can be achieved in a shorter workstation, which improves the operating convenience compared to the existing technology, and because the workstation is short, it is also superior to the existing technology in terms of maintenance.

[0016] 3. By setting a stopper, one end of the metal frame can be blocked by the stopper during welding, so that the position of the metal frame is restricted to a certain orientation, thereby facilitating the welding assembly to weld the parts on the metal frame and improving welding efficiency.

[0017] 4. By arranging two symmetrical clamping blocks under the clamping plate and cooperating with the two clamping blocks through the supporting blocks respectively, when the angle of the metal frame is adjusted, the two metal rods on the top of the metal frame can be clamped separately through the two clamping blocks and the two supporting blocks. Moreover, since the clamping plate is made of hard material and is not easily deformed, deformation of the metal frame can be avoided when the angle of the metal frame is adjusted.

[0018] Other features and advantages of the present invention will be described in the following description, and part of them will become obvious from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them: Figure 1 It is an overall stereogram of the present invention; Figure 2 It is a schematic diagram of the working state of the present invention; Figure 3 It is a schematic diagram of the conveyor, welding assembly, clamping assembly and reversing assembly of the present invention; Figure 4 is a schematic diagram of a clamping assembly of the present invention; Figure 5 is a schematic diagram of a welding assembly of the present invention; Figure 6 A perspective view of the reversing assembly, conveyor and metal frame of the present invention; Figure 7 A three-dimensional diagram of the reversing assembly and the metal frame of the present invention; Figure 8 A three-dimensional diagram of the reversing assembly of the present invention; Fig. 9 It is a three-dimensional view of the other side of the reversing assembly of the present invention; Fig.10 An exploded view of the reversing assembly of the present invention; Fig.11 is a schematic diagram of a stopper of the present invention; Fig.12 is a cross-sectional view of the clamping plate of the present invention; Fig.13 It is a schematic diagram of the reversing process of the telescopic arm, the clamping plate and the metal frame of the present invention; Fig.14 It is a schematic diagram of the commutation process of the commutation assembly and the metal frame of the present invention.

[0020] The reference numerals are as follows: 100, clamping assembly; 101, first base; 102, first rotating seat; 103, first upper arm; 104, first joint; 105, second joint; 106, first lower arm; 107, clamping hand; 200, welding assembly; 201, second base; 202, second rotating seat; 203, second upper arm; 204, third joint; 205, fourth joint; 206, second lower arm; 207, welding machine; 300. Conveyor; 400, reversing assembly; 401, column; 402, telescopic arm; 403, first telescopic member; 404, slider; 405, clamping plate; 406, sliding sleeve; 407, hinged ear; 408, hinged block; 409, synchronization 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, supporting block; 421, convex block; 422, sealing chamber; 423, sealing rod; 424, air pressure hole; 425, air pressure tube; 426, second telescopic member; 500. Metal frame; 501. Parts. DETAILED DESCRIPTION

[0021] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used to explain the principles of the present invention together with the embodiments of the present invention.

[0022] Embodiment 1: Figure 1 , Figure 2 , Figure 3 As shown, this embodiment provides an automatic welding device based on a furniture parts production line, which can weld a part 501 on a metal frame 500 to the metal frame 500, and provides an automatic welding device based on a furniture parts production line, including: The conveyor 300 is installed on the ground and is used to convey the metal frame 500 to be welded. The conveyor 300 is a guide roller type. The guide roller type conveyor is mainly composed of a series of rollers arranged in parallel. These rollers are usually installed on a frame or a bracket. The rollers are driven to rotate by a driving device (such as a motor) to achieve continuous conveying of materials, thereby conveying the metal frame 500; The clamping assembly 100 is arranged on one side of the conveyor 300 and is used to clamp the part 501 on the metal frame 500 to the welding position of the metal frame 500. The clamping assembly 100 is composed of a mechanical arm and a mechanical hand, and can realize multi-axis motion, so as to accurately clamp the part 501 to the welding position of the metal frame 500, and realize accurate welding without manual placement; The welding assembly 200 is installed on the other side of the conveyor 300 and is used to weld the part 501 and the metal frame 500 to each other; The reversing assembly 400 is disposed on one side of the conveyor 300 and is used to change the placement direction of the metal frame 500 so that the four sides of the metal frame 500 can be placed upwards respectively, so that the parts 501 on the four sides of the metal frame 500 can be welded respectively.

[0023] like Figure 4 As shown, the clamping assembly 100 includes: A first base 101 is fixedly installed on the ground; A first rotating seat 102 is rotatably mounted on the top of the first base 101; The 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 is hinged to the top of the first arm 103; A second joint 105, one end of the second joint 105 is rotatably connected to the top of the first joint 104; A first small arm 106, the top of the first small arm 106 is hinged to the other end of the second joint 105; The clamping hand 107, the top of the clamping hand 107 is fixedly connected to the bottom end of the first forearm 106, and the clamping hand 107 is composed of two clamping joints. The two clamping joints can be close to each other or in opposition to each other. When the two clamping joints are close to each other, the part 501 can be clamped, and then the part 501 is transferred to the welding position of the metal frame 500 through the movement of the clamping assembly 100, and finally the part 501 and the metal frame 500 are welded together through the welding assembly 200.

[0024] like Figure 5 As shown, the welding assembly 200 includes: The second base 201 is fixedly installed on the ground; The second rotating seat 202 is rotatably mounted on the top of the second base 201; The second large arm 203 is fixedly mounted on the top of the second rotating seat 202 and rotates synchronously with the second rotating seat 202; A third joint 204, the bottom of the third joint 204 is hinged to the top of the second arm 203; A fourth joint 205, one end of the fourth joint 205 is rotatably connected to the top of the third joint 204; A second small arm 206, the top of the second small arm 206 is hinged to the other end of the fourth joint 205; The welding machine 207, the top of the welding machine 207 is fixedly connected to the bottom end of the second small arm 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 connected; It should be noted that the welding machine 207 can be one of the following: 1. AC welding machine The AC welding machine is essentially a special step-down transformer. The welding rod and the weldment are connected to the two output terminals of the power supply respectively. During welding, the output current of the transformer can be adjusted by changing the length of the air gap of the reactor to meet different welding requirements. When the welding rod and the weldment are in contact, the power supply is short-circuited. At this time, the current at the contact point is very large. Due to the large contact resistance of the contact point, the current will generate a lot of heat at the contact point. Then the welding rod is slightly lifted to create a certain gap between the welding rod and the weldment. At this time, an arc will appear at the gap. The high temperature of the arc can melt the welding rod and the weldment together. 2. DC welding machine The working principle of a DC welding machine is relatively complicated. First, the AC is rectified and filtered to become DC. In order to improve the welding performance, dynamic response speed and efficiency of the welding machine, the DC must first be inverted into medium-high frequency low-voltage AC through a high-power thyristor, and then rectified to output a stable DC current. Because the medium-high frequency AC has a greater inductive reactance than the industrial frequency AC, the transformer core and number of turns can be reduced, the response speed is faster, and arc initiation is easier and more stable. 3. Argon arc welding machine The working principle of argon arc welding machine is mainly to use inert gas (argon) as shielding gas, and generate an arc between the tungsten electrode and the workpiece to melt the base material and filler wire, so as to achieve welding. Argon arc welding machine can be divided into manual AC tungsten electrode argon arc welding machine, manual DC tungsten electrode argon arc welding machine and melting electrode automatic argon arc welding machine and other types. During 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 manual switch is closed, the circuit starts to output power, and the current passes through the arc between the welding gun and the workpiece to generate high temperature, so that the workpiece melts and fills the weld. At the same time, argon gas as a shielding gas can prevent the weld from being affected by harmful gases such as oxygen and nitrogen in the air, thereby ensuring the welding quality; 4. Laser welding machine Using laser beam as heat source for welding is suitable for welding occasions with high precision and high quality requirements.

[0025] like Figure 6 , Figure 7 , Figure 8 As shown, the switching assembly 400 includes: A column 401 is fixedly installed on the ground to provide support for the entire reversing assembly 400; 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, which is mounted on an end of the telescopic arm 402 away from the metal frame 500. The first telescopic member 403 can drive the telescopic arm 402 to move toward or away from the metal frame 500; The clamping plate 405 is installed below the telescopic arm 402. A clamp 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 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 faces of the metal frame 500 can face upwards respectively, so that the parts 501 can be welded to each face of the metal frame 500. like Fig. 9 As shown, the reversing assembly 400 also includes: Slider 404, the slider 404 is installed in the middle of the column 401, and a slide groove is correspondingly provided in the middle of the column 401, and the slider 404 is slidably connected to the slide groove; The 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 ground. The second telescopic member 426 can drive the slider 404 to slide up and down inside the column 401, thereby achieving the function of adjusting the height of the clamping plate 405; In the above scheme, since the metal frame 500 cannot be kept in the middle of the conveyor 300 when the clamping plate 405 drives the metal frame 500 to rotate, the first telescopic member 403 drives the telescopic arm 402 and the clamping plate 405 to move closer to the column 401 before the clamping plate 405 puts the metal frame 500 down, so that the metal frame 500 is always directly above the conveyor 300; like Fig.10 , Fig.11 As shown, the reversing assembly 400 further includes: The 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. The setting of the sliding sleeve 406 can make the telescopic arm 402 more smooth when sliding, and will not shake up and down, thereby ensuring the smoothness of the sliding process; There are two hinged ears 407, which are fixedly connected to the front and rear ends of the top of the clamping plate 405 respectively; 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 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 hinge ears 407, and an output end of the first motor 412 is fixedly connected to one end of the synchronization rod 409, so that the first motor 412 can drive the synchronization rod 409 and the two hinge blocks 408 to rotate synchronously; There are two stoppers 410, which are respectively mounted on one end of the two hinge blocks 408; There are two third telescopic members 411, and two ends of the two third telescopic members 411 are respectively connected to the stopper 410 and the hinge block 408; In the above scheme, by setting the stopper 410, after the metal frame 500 is transported to the position by the conveyor 300, by setting the length of the third telescopic member 411, the hinge block 408 and the stopper 410 are driven to rotate by the first motor 412, so that the stopper 410 blocks one end of the metal frame 500, so that the metal frame 500 can achieve the function of limiting, and prevent the position of the metal frame 500 from being offset during the welding process, which affects the welding effect; like Fig.10 As shown, the reversing assembly 400 also includes: The rotating seat 413 is fixedly connected to the middle part of the top of the clamping plate 405; The 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; The worm wheel 415 is fixedly connected to the middle part of the worm wheel 415; The worm 416 is rotatably connected to the end of the telescopic arm 402. A second motor 417 is fixedly installed on the top of the telescopic arm 402. The output shaft of the second motor 417 is fixedly connected to the top of the worm 416. like Fig.12 , Fig.13 , Fig.14 As shown, the fixture at the bottom of the clamping plate 405 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 both ends of the clamping plate 405. 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, and the clamping blocks 419 can rotate within the movable grooves 418 to a certain extent; The protrusion 421 has two protrusions 421, and the two protrusions 421 are respectively connected to the inner sides of the two clamping blocks 419. The steps formed by the protrusions 421 can hook the metal frame 500 to prevent the metal frame 500 from being separated from the clamping plate 405 when lifting; There are two sealed cavities 422, which are opened inside the clamping plate 405 and communicate with the insides of the two movable grooves 418 respectively; There are two sealing rods 423, which are fixedly connected to the two clamping blocks 419 respectively, 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 of the air pressure hole 424, and the other end of the air pressure tube 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 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 are brought close to each other to clamp the metal frame 500; As a possible embodiment, a support block 420 is 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 on the inner sides of the two clamping blocks 419. When the two clamping blocks 419 are close to each other, they can cooperate with the support blocks 420 to clamp the two ends of the metal frame 500, so that the clamping force can be dispersed on the metal rod of the metal frame 500, thereby avoiding deformation of the metal frame 500 by direct clamping.

[0026] 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 parts production line, comprising the following steps: 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. After 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 the welding of all four sides of the metal frame 500 is completed.

[0027] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0028] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the embodiments of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0029] In the embodiments of the present application, the devices or elements referred to or implied must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise precisely and specifically specified.

[0030] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only 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: The welding mechanism comprises: 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), installed on the other side of the conveyor (300), used to weld the parts (501) and the metal frame (500) to each other; The 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.

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 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), the first telescopic member (403) being capable of driving the telescopic arm (402) to move towards or away from the metal frame (500); A 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).

5. The automatic welding device based on the furniture parts production line according to claim 4, characterized in that: The top of the clamping plate (405) is hingedly connected to one end of the telescopic arm (402). 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 way, the four surfaces of the metal frame (500) can be facing upwards respectively, so that the parts (501) can be welded to each surface of the metal frame (500).

6. The automatic welding device based on the furniture parts production line according to claim 4, 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), the 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 ground, and the second telescopic member (426) can drive the slider (404) to slide up and down inside the column (401).

7. The automatic welding device based on the furniture parts production line according to claim 6, characterized in that: The reversing assembly (400) further includes: A sliding sleeve (406), the sliding sleeve (406) being fixedly connected to the middle portion of the sliding block (404), and the telescopic arm (402) being slidably connected to the sliding sleeve (406); 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 an outer wall of one of the hinge 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 hinge blocks (408) to rotate synchronously; There are two stoppers (410), which are respectively mounted on one end of the two hinge blocks (408); The third telescopic members (411) are provided with two, and two ends of the two third telescopic members (411) are respectively connected to the stopper (410) and the hinge block (408).

8. The automatic welding device based on the furniture parts production line according to claim 4, 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 part of the worm wheel (415); 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).

9. The automatic welding device based on the furniture parts production line according to claim 4, 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).

10. 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 9, 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 the welding of all four sides of the metal frame (500) is completed.

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