Chassis spot welding workstation and chassis spot welding system

Abstract

The embodiments of the present invention provide a chassis spot welding workstation and a chassis spot welding system, which relate to the field of automobile automated production equipment. The chassis spot welding workstation includes a truss robot, a spot welding robot and a welding assembly mechanism. The welding assembly mechanism includes a track system and at least two manipulators, at least two manipulators are arranged on the track system at intervals, and can move relative to each other through the track system. The truss robot is arranged above the welding assembly mechanism, and is used to grab the raw materials to be welded one by one to at least two manipulators or the raw materials to be welded fixed by the manipulators, and the manipulators are used to grab and fix the raw materials to be welded. The spot welding robot is arranged close to the welding assembly mechanism, and is used to weld adjacent raw materials to be welded, and the manipulator is also used to lift the raw materials to be welded after welding to the transportation line. The chassis spot welding workstation can automatically grab the raw materials to be welded and complete the functions of welding and conveying, saving time and labor, and having high efficiency.

Description

Technical Field

[0001] The invention relates to the field of automobile automated production devices, and in particular to an underframe spot welding workstation and an underframe spot welding system. Background Art

[0002] At present, the assembly and spot welding of small parts of the chassis of new energy buses are carried out manually. Due to the complex product structure and various models, the entire positioning tooling needs to be replaced each time the model is changed. Each time the on-site personnel assemble, they need to move dozens of square tubes into the predetermined position, and then use welding guns to spot weld the connection positions of each square tube. Then, they have to carry them manually, which is time-consuming, labor-intensive and has unstable quality. Summary of the invention

[0003] The purpose of the present invention includes providing a chassis spot welding workstation, which can automatically grab the raw materials to be welded and complete the functions of welding and conveying, saving time and labor and having high efficiency.

[0004] The purpose of the present invention also includes providing a chassis spot welding system, which adopts the chassis spot welding workstation provided by the present invention, can automatically grab the raw materials to be welded and complete the functions of welding and conveying, saving time and labor and having high efficiency.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] In a first aspect, an embodiment of the present invention provides a chassis spot welding workstation, including a truss robot, a spot welding robot, and a welding mechanism;

[0007] The welding mechanism includes a track system and at least two manipulators, at least two of the manipulators are arranged on the track system at intervals and can move relatively through the track system; the truss robot is arranged above the welding mechanism, and is used to grab the raw materials to be welded one by one to at least two of the manipulators or the raw materials to be welded fixed by the manipulators, and the manipulator is used to grab and fix the raw materials to be welded; the spot welding robot is arranged close to the welding mechanism, and is used to weld adjacent raw materials to be welded, and the manipulator is also used to lift the welded raw materials to be welded to the transportation line.

[0008] In an optional embodiment, the track system includes a first track, a first driving member and a second track; the first track is arranged along a first direction, the second track is arranged along a second direction, and is slidably matched with the first track, and the first direction and the second direction form an angle; the first driving member is connected to the second track, and is used to drive the second track to slide relative to the first track along the first direction, and a plurality of the manipulators are arranged on the second track at intervals.

[0009] In an optional embodiment, the track system also includes a plurality of second driving members, which are arranged on the second track and connected one-to-one with the plurality of manipulators, and each second driving member is used to drive the corresponding manipulator to slide relative to the second track along the second direction.

[0010] In an optional embodiment, there are multiple second tracks, and the multiple second tracks are arranged in parallel and at intervals on the first track. At least two of the manipulators are arranged on each of the second tracks, and the at least two manipulators are used to cooperate with each other and fix the raw materials to be welded.

[0011] In an optional embodiment, the track system further includes a limit block, wherein the limit block is disposed between two adjacent second tracks, and the limit block is disposed on the first track to limit a sliding distance of the second track.

[0012] In an optional embodiment, the track system includes a base frame and a connecting plate, the first track is fixed to the base frame, and at least one second track is fixed to the base frame via the connecting plate; there are multiple first driving members, and the multiple first driving members correspond to multiple second tracks that slide relative to the first track, and the track system also includes a slide rail, the first driving member slides with the slide rail, and the second track is set on the first driving member.

[0013] In an optional embodiment, the manipulator includes a lifting part and a grasping part arranged on the lifting part, the lifting part is arranged on the rail system and is used to drive the grasping part to approach or move away from the rail system, and the grasping part is used to carry and fix the raw material to be welded.

[0014] In an optional embodiment, the lifting part includes a lifting member, and the grasping part includes a carrying plate, a first clamping plate, a second clamping plate and a clamping drive member. The lifting member is connected to the clamping drive member and is used to drive the clamping drive member to approach or move away from the rail system. The carrying plate and the first clamping plate are respectively fixed on the clamping drive member, and the second clamping plate is fixed on the carrying plate. In addition, the first clamping plate and the second clamping plate are relatively arranged to form a clamping opening, and the clamping drive member is used to drive the first clamping plate to approach or move away from the second clamping plate to adjust the size of the clamping opening and clamp or release the material to be welded.

[0015] In an optional embodiment, a limiting guide groove is provided on the bearing plate, and the first clamping plate is slidably engaged with the limiting guide groove.

[0016] In a second aspect, an embodiment of the present invention provides a chassis spot welding system, comprising a material bin and a chassis spot welding workstation as described in any one of the aforementioned embodiments, wherein the material bin is arranged below the truss robot and on one side of the welding mechanism.

[0017] The beneficial effects of the embodiments of the present invention include:

[0018] The chassis spot welding workstation provided by the embodiment of the present invention can grab the raw materials to be welded one by one to the manipulator through the truss robot, and grab and fix the raw materials to be welded by the manipulator. The manipulator can move relatively through the track system to adjust the position of the raw materials to be welded so that the raw materials to be welded are close to each other and ready for welding. In addition, the chassis spot welding workstation provided by the embodiment of the present invention can also grab the raw materials to be welded to the raw materials to be welded fixed by the manipulator according to the welding needs, and then weld the adjacent raw materials to be welded together through the spot welding robot. After completing the electric welding work, the welded raw materials to be welded can be lifted to the transportation line by the manipulator. The chassis spot welding workstation can realize automatic grabbing of raw materials to be welded, automatic completion of welding and transmission work, saving time and labor, and high efficiency.

[0019] The chassis spot welding system provided by the embodiment of the present invention adopts the chassis spot welding workstation, and the raw materials to be welded can be grabbed one by one to the manipulator by the truss robot, and the adjacent raw materials to be welded can be welded together by the spot welding robot. After the electric welding work is completed, the welded raw materials to be welded can also be lifted to the transportation line by the manipulator. Therefore, the automation degree is high, time and labor are saved, and the efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A schematic structural diagram of a chassis spot welding system provided in a specific embodiment of the present invention.

[0022] Figure 2 A schematic structural diagram of a chassis spot welding workstation provided in a specific embodiment of the present invention.

[0023] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0024] Figure 4A schematic structural diagram of a mechanical arm of a truss robot of a chassis spot welding workstation provided in a specific embodiment of the present invention.

[0025] Figure 5 A schematic structural diagram of a welding mechanism of a chassis spot welding workstation provided in a specific embodiment of the present invention.

[0026] Figure 6 A schematic structural diagram of a manipulator of a chassis spot welding workstation provided in a specific embodiment of the present invention.

[0027] Icons: 200- chassis spot welding system; 210- silo; 211- storage tank; 201- raw materials to be welded; 100- chassis spot welding workstation; 110- truss robot; 112- bracket; 113- running truss; 1131- first guide; 1132- second guide; 1133- third guide; 1134- first guide drive; 1135- second guide drive; 1136- third guide drive; 114- mechanical arm; 1141- mounting plate; 1142- rotating drive; 1143- clamping structure; 1041- first clamping plate; 1042- second clamping plate; 1043- clamping drive; 1044- first clamp Hook; 1405-clamping drive member; 1046-second hook; 120-spot welding robot; 130-welding mechanism; 131-track system; 1311-base; 1312-first track; 1313-first drive member; 1314-second track; 1315-second drive member; 1316-connecting plate; 1317-connecting sheet metal; 1318-limiting block; 132-manipulator; 1321-lifting part; 1301-fixed plate; 1302-lifting member; 1322-grasping part; 1303-carrying plate; 1304-first clamping plate; 1305-second clamping plate; 1306-clamping drive member; 101-limiting guide groove. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0031] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0033] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0034] Figure 1 This is a schematic diagram of the structure of the chassis spot welding system 200 provided in this embodiment. Figure 1 , this embodiment provides a chassis spot welding system 200, which includes a silo 210, a chassis spot welding workstation 100 and a transportation line (not shown). The silo 210 and the transportation line are both arranged near the chassis spot welding workstation 100, the silo 210 is used to store the raw materials 201 to be welded, and the transportation line is used to transport the products welded by the chassis spot welding workstation 100 out of the chassis spot welding workstation 100. Optionally, in this embodiment, the raw materials 201 to be welded can be square tubes, so a plurality of accommodating grooves 211 that match the shape of the square tube and are convenient for grabbing can be provided on the silo 210 to accommodate square tubes of different models.

[0035] Figure 2 This is a structural diagram of the chassis spot welding workstation 100 provided in this embodiment. Figure 1 and Figure 2 In this embodiment, the chassis spot welding workstation 100 includes a truss robot 110, a spot welding robot 120 and a welding assembly mechanism 130. The truss robot 110, the spot welding robot 120 and the welding assembly mechanism 130 are arranged adjacent to each other and are electrically connected or communicated with each other to facilitate control.

[0036] Among them, the truss robot 110 is used to grab the raw materials 201 to be welded from the silo 210 one by one to the welding assembly mechanism 130, or grab the raw materials 201 to be welded that have been fixed on the welding assembly mechanism 130 according to the welding requirements, so as to prepare for welding. The welding assembly mechanism 130 is used to receive the raw materials 201 to be welded grabbed by the truss robot 110 and fix the raw materials 201 to be welded, and is also used to adjust the position of the raw materials 201 to be welded to meet different welding requirements. The spot welding robot 120 is used to weld two or more adjacent raw materials 201 to be welded. When the raw materials 201 to be welded are welded and formed into a product, the welding assembly mechanism 130 is also used to lift the product to the transportation line.

[0037] Figure 3 for Figure 2 Please refer to the enlarged view of point A in the middle. Figure 2 and Figure 3 In this embodiment, the truss robot 110 includes a support 112, a running truss 113 and a mechanical arm 114. The running truss 113 is arranged on the support 112, and the mechanical arm 114 is installed on the running truss 113, so that the mechanical arm 114 is arranged above the material bin 210 and the welding mechanism 130, which is convenient for taking and placing materials. The mechanical arm 114 can move in multiple directions on the running truss 113.

[0038] Optionally, two brackets 112 are provided and arranged relatively parallel. The running truss 113 includes first guide members 1131 respectively provided at the top ends of the two brackets 112, a second guide member 1132 connected between the two first guide members 1131, and a third guide member 1133 slidably connected to the second guide member 1132. In this embodiment, the first guide member 1131, the second guide member 1132 and the third guide member 1133 are arranged vertically in pairs.

[0039] In this embodiment, the running truss 113 also includes a first guide drive member 1134, a second guide drive member 1135 and a third guide drive member 1136, wherein the first guide drive member 1134 is arranged on the first guide member 1131, and is used to drive the second guide member 1132 to slide along the extension direction of the first guide member 1131, the second guide drive member 1135 is arranged on the second guide member 1132, and is used to drive the third guide member 1133 to slide along the extension direction of the second guide member 1132, and the third guide drive member 1136 is arranged on the third guide member 1133, and is used to drive the robot arm 114 to slide along the extension direction of the third guide member 1133.

[0040] It should be noted that, in this embodiment, the first guide drive member 1134 , the second guide drive member 1135 , and the third guide drive member 1136 may all be linear motors.

[0041] Figure 4This is a schematic diagram of the structure of the mechanical arm 114 of the truss robot 110 of the chassis spot welding workstation 100 provided in this embodiment. Figure 4 In this embodiment, the robot arm 114 includes a mounting plate 1141, a rotating driving member 1142 and a clamping structure 1143. The rotating driving member 1142 is mounted on the mounting plate 1141, the mounting plate 1141 is connected to the third guide member 1133, and the clamping structure 1143 is used to clamp the raw material 201 to be welded.

[0042] Optionally, the clamping structure 1143 includes a first clamping plate 1041, a second clamping plate 1042 and a clamping driving member 1043, the first clamping plate 1041 is connected to the rotating driving member 1142, the clamping driving member 1043 is installed on the first clamping plate 1041 and connected to the second clamping plate 1042 to drive the second clamping plate 1042 to approach or move away from the first clamping plate 1041 to achieve clamping and release of the raw material 201 to be welded.

[0043] In order to ensure the stability of the clamping structure 1143, in this embodiment, the clamping structure 1143 also includes a first hook 1044 arranged on the side of the first clamping plate 1041 close to the second clamping plate 1042, a clamping driving member 1405 and a second hook 1046 arranged on the clamping driving member 1405. The first hook 1044 extends toward the second clamping plate 1042, and the clamping driving member 1405 is used to drive the second hook 1046 to approach or move away from the first hook 1044, and cooperate with the first clamping plate 1041 and the second clamping plate 1042 to clamp the raw material 201 to be welded.

[0044] In this embodiment, the rotating driving member 1142 can be a motor, and the clamping driving member 1043 and the clamping driving member 1405 can both be a cylinder or a hydraulic cylinder.

[0045] It can be understood that in this embodiment, the truss robot 110 can clamp or release the raw material 201 to be welded by cooperating with the first clamping plate 1041, the second clamping plate 1042, the first hook 1044 and the second hook 1046, and can achieve multi-directional movement by running the truss 113 and the rotating driving member 1142, so as to facilitate the clamping and release of the raw material 201 to be welded.

[0046] Figure 5 This is a structural diagram of the welding mechanism 130 of the chassis spot welding workstation 100 provided in this embodiment. Figure 5 In this embodiment, the welding mechanism 130 includes a rail system 131 and at least two manipulators 132 . The at least two manipulators 132 are arranged on the rail system 131 at intervals and can move relatively through the rail system 131 .

[0047] Optionally, in this embodiment, the rail system 131 includes a base frame 1311 , a first rail 1312 , a first driving member 1313 , a second rail 1314 and a plurality of second driving members 1315 .

[0048] The first rail 1312 is fixed on the base frame 1311 and arranged along the first direction, and the second rail 1314 is arranged along the second direction and slidably cooperates with the first rail 1312. The first driving member 1313 is connected to the second rail 1314 and is used to drive the second rail 1314 to slide relative to the first rail 1312 along the first direction. A plurality of manipulators 132 are arranged on the second rail 1314 at intervals.

[0049] It should be understood that in this embodiment, both the first driving member 1313 and the second driving member 1315 can be linear motors.

[0050] A plurality of second driving members 1315 are disposed on the second track 1314 and are connected to the plurality of manipulators 132 in a one-to-one correspondence. Each second driving member 1315 is used to drive the corresponding manipulator 132 to slide relative to the second track 1314 along the second direction.

[0051] The first direction and the second direction form an angle. Optionally, in this embodiment, the first direction and the second direction are perpendicular to each other.

[0052] Optionally, the number of the second tracks 1314 is set to be multiple, and the multiple second tracks 1314 are arranged in parallel and at intervals on the first track 1312. Each second track 1314 is provided with at least two manipulators 132, and the at least two manipulators 132 are used to cooperate with each other and fix the raw material 201 to be welded.

[0053] It is understandable that two or more manipulators 132 disposed on the same second track 1314 can cooperate with each other to stably clamp a raw material 201 to be welded. Therefore, multiple second tracks 1314 can be correspondingly provided with multiple parallel raw materials 201 to be welded. When multiple parallel raw materials 201 to be welded are fixed, the raw materials 201 to be welded that are at an angle to the extending direction of the fixed raw materials 201 to be welded can be grasped by the truss robot 110 and carried or clamped on two fixed raw materials 201 to be welded, so as to prepare for welding.

[0054] Optionally, in this embodiment, two first rails 1312 are provided, and three second rails 1314 are provided, and the three second rails 1314 are arranged across and spaced on the two first rails 1312, and each second rail 1314 is provided with two manipulators 132 to complete the welding of small parts of the bus chassis. It should be understood that in other optional embodiments, the number of first rails 1312, second rails 1314 and manipulators 132 can be set as needed.

[0055] In this embodiment, in order to facilitate the sliding of the second rails 1314 , the rail system 131 further includes a connecting plate 1316 , and the plurality of second rails 1314 are fixed to the bottom frame 1311 via the connecting plate 1316 .

[0056] Optionally, the number of first driving members 1313 is also set to be multiple, each first driving member 1313 corresponds to a second track setting, and the track system 131 also includes a slide rail, the first driving member 1313 slidably cooperates with the slide rail, and the second track 1314 is set on the first driving member 1313.

[0057] Optionally, in this embodiment, the welding mechanism 130 further includes a connecting sheet metal 1317. A second track 1314 at the end is fixed to the base frame 1311 through the connecting sheet metal 1317. Therefore, the second track 1314 may not be provided with a corresponding first driving member 1313. That is, in this embodiment, each first driving member 1313 is provided corresponding to the second track 1314 that slides relative to the first track 1312.

[0058] In order to limit the sliding distance of the second rail 1314, in this embodiment, the rail system 131 also includes a limit block 1318, and a limit block 1318 is set between two adjacent second rails 1314, and the limit block 1318 is set on the first rail 1312, so as to limit the sliding distance of the second rail 1314.

[0059] Figure 6 This is a schematic diagram of the structure of the manipulator 132 of the chassis spot welding workstation 100 provided in this embodiment. Figure 6 In this embodiment, the manipulator 132 includes a lifting portion 1321 and a grabbing portion 1322 disposed on the lifting portion 1321. The lifting portion 1321 is disposed on the rail system 131 and is used to drive the grabbing portion 1322 to approach or move away from the rail system 131. The grabbing portion 1322 is used to carry and fix the raw material 201 to be welded.

[0060] Optionally, in this embodiment, the lifting portion 1321 includes a fixed plate 1301 and a lifting member 1302. The fixed plate 1301 is used to be fixed on the base frame 1311. The lifting member 1302 is installed on the fixed plate 1301 and is used to connect with the grasping portion 1322 to drive the grasping portion 1322 to move up and down, thereby realizing the lifting of the welded product.

[0061] Optionally, the grabbing portion 1322 includes a carrying plate 1303 , a first clamping plate 1304 , a second clamping plate 1305 and a clamping driving member 1306 .

[0062] In this embodiment, the lifting member 1302 is connected to the clamping drive member 1306 and is used to drive the clamping drive member 1306 to approach or move away from the rail system 131. The supporting plate 1303 and the first clamping plate 1304 are respectively fixed on the clamping drive member 1306, and the second clamping plate 1305 is fixed on the supporting plate 1303. In addition, the first clamping plate 1304 and the second clamping plate 1305 are relatively arranged to form a clamping opening. The clamping drive member 1306 is used to drive the first clamping plate 1304 to approach or move away from the second clamping plate 1305 to adjust the size of the clamping opening and clamp or release the raw material 201 to be welded.

[0063] It can be understood that, in this embodiment, both the lifting member 1302 and the clamping drive member 1306 can be hydraulic cylinders or pneumatic cylinders.

[0064] In order to ensure the stability of the grasping structure of the robot arm 132 , in this embodiment, a limiting guide groove 101 is provided on the bearing plate 1303 , and the first clamping plate 1304 is slidably matched with the limiting guide groove 101 .

[0065] Please continue to refer to Figure 1 and Figure 2 When the chassis spot welding system 200 provided in this embodiment is used, the raw materials 201 to be welded are grabbed one by one from the silo 210 to the manipulator 132 on each second track 1314 through the driving action of the first guide driving member 1134, the second guide driving member 1135, the third guide driving member 1136, the rotating driving member 1142 and the clamping driving member 1043, and the first clamping plate 1041, the second clamping plate 1042, the first hook 1044 and the second hook 1046 cooperate with each other, and the raw materials 201 to be welded are clamped by the driving action of the clamping driving member 1306 and the mutual cooperation of the first clamping plate 1304 and the second clamping plate 1305. Then, the raw materials 201 to be welded can be further grabbed from the silo 210 in the same way by the truss robot 110 and clamped between the two already fixed raw materials 201 to form a stable structure. After all the raw materials 201 to be welded are arranged in the above manner, the spot welding robot 120 can be started to weld the adjacent raw materials 201 together to complete the welding. After the welding is completed, the product can also be lifted to the transport line under the driving action of the lifting member 1302.

[0066] In summary, the chassis spot welding workstation 100 provided in this embodiment can automatically grab the raw material 201 to be welded, automatically complete the welding and conveying work, save time and labor, and has high efficiency.

[0067] The chassis spot welding system 200 provided in this embodiment adopts the chassis spot welding workstation 100, and the raw materials 201 to be welded can be grabbed one by one to the manipulator 132 by the truss robot 110, and the adjacent raw materials 201 to be welded can be welded together by the spot welding robot 120. After the electric welding work is completed, the welded raw materials 201 to be welded can also be lifted to the transportation line by the manipulator 132. Therefore, the degree of automation is high, time and labor are saved, and the efficiency is high.

[0068] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A chassis spot welding workstation, characterized in that: Including truss robots, spot welding robots and welding mechanisms; The welding mechanism includes a track system and at least two manipulators, at least two of which are arranged on the track system at intervals and can move relatively through the track system; the truss robot is arranged above the welding mechanism and is used to grab the raw materials to be welded one by one to at least two of the manipulators or the raw materials to be welded fixed by the manipulators, and the manipulator is used to grab and fix the raw materials to be welded; the spot welding robot is arranged close to the welding mechanism and is used to weld adjacent raw materials to be welded, and the manipulator is also used to lift the welded raw materials to be welded to the transportation line; The track system includes a first track, a first driving member and a second track; the first track is arranged along a first direction, the second track is arranged along a second direction and is slidably matched with the first track, and the first direction and the second direction form an angle; the first driving member is connected to the second track and is used to drive the second track to slide relative to the first track along the first direction, and a plurality of the manipulators are arranged on the second track at intervals; The manipulator includes a lifting part and a grasping part arranged on the lifting part. The lifting part is arranged on the track system and is used to drive the grasping part to approach or move away from the track system. The grasping part is used to carry and fix the raw material to be welded.

2. The chassis spot welding workstation according to claim 1, characterized in that: The track system also includes a plurality of second driving members, which are arranged on the second track and connected to the plurality of manipulators one-to-one. Each second driving member is used to drive the corresponding manipulator to slide relative to the second track along the second direction.

3. The chassis spot welding workstation as claimed in claim 2, characterized in that: There are multiple second tracks, and the multiple second tracks are arranged in parallel and at intervals on the first track. At least two manipulators are arranged on each second track, and the at least two manipulators are used to cooperate with each other and fix the raw materials to be welded.

4. The chassis spot welding workstation as claimed in claim 3, characterized in that: The track system further includes a limit block, wherein the limit block is disposed between two adjacent second tracks, and the limit block is disposed on the first track to limit the sliding distance of the second track.

5. The chassis spot welding workstation as claimed in claim 3, characterized in that: The track system includes a base frame and a connecting plate, the first track is fixed to the base frame, and at least one second track is fixed to the base frame through the connecting plate; there are multiple first driving members, and the multiple first driving members are arranged corresponding to the multiple second tracks sliding relative to the first track, and the track system also includes a slide rail, the first driving member slidably cooperates with the slide rail, and the second track is arranged on the first driving member.

6. The chassis spot welding workstation according to claim 1, characterized in that: The lifting part includes a lifting member, and the grabbing part includes a carrying plate, a first clamping plate, a second clamping plate and a clamping drive member. The lifting member is connected to the clamping drive member and is used to drive the clamping drive member to approach or move away from the rail system. The carrying plate and the first clamping plate are respectively fixed on the clamping drive member, and the second clamping plate is fixed on the carrying plate. In addition, the first clamping plate and the second clamping plate are relatively arranged to form a clamping opening. The clamping drive member is used to drive the first clamping plate to approach or move away from the second clamping plate to adjust the size of the clamping opening and clamp or release the raw material to be welded.

7. The chassis spot welding workstation according to claim 6, characterized in that: The bearing plate is provided with a limit guide groove, and the first clamping plate is slidably matched with the limit guide groove.

8. A chassis spot welding system, characterized in that: It comprises a material bin and a chassis spot welding workstation as described in any one of claims 1 to 7, wherein the material bin is arranged below the truss robot and on one side of the welding mechanism.

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