CN216576173U

CN216576173U - Welding machine for robot machining and manufacturing

Info

Publication number: CN216576173U
Application number: CN202122136327.XU
Authority: CN
Inventors: 卞城斌; 周晓丹
Original assignee: Jiangsu Haote Construction Engineering Co ltd
Current assignee: Jiangsu Haote Construction Engineering Co ltd
Priority date: 2021-09-06
Filing date: 2021-09-06
Publication date: 2022-05-24
Anticipated expiration: 2031-09-06

Abstract

The utility model discloses a welding machine for robot machining and manufacturing, which comprises: a box body; the main shaft is rotatably arranged at the middle position of the top of the box body; the working platform is fixedly arranged at the top end of the box body; the second supporting seat is arranged at the left end of the top of the box body; the two clamps are respectively and fixedly arranged on the left side and the right side of the working platform; the two support assemblies are respectively fixedly arranged on the left side and the right side of the top of the working platform and support the bottom of the working platform; and the station switching mechanism is arranged at the bottom of the inner cavity of the box body and is fixedly connected with the main shaft. This welding machine for robot manufacturing can go on simultaneously in welding and last unloading, has saved the time of last unloading, has improved the work efficiency of welding machine greatly to, the positioning accuracy of soldered connection is higher, and the motion process is more stable, stabilizes the subassembly and guarantees that work platform can not appear vibrating in the course of working, has improved the machining precision greatly.

Description

Welding machine for robot machining and manufacturing

Technical Field

The utility model relates to the technical field of machine welding equipment, in particular to a welding machine for robot machining and manufacturing.

Background

Welding, also known as fusion welding, is a manufacturing process and technique for joining metals or other thermoplastic materials, such as plastics, in a heated, high temperature or high pressure manner; the energy sources for modern welding are many, including gas flame, electric arc, laser, electron beam, friction, and ultrasonic, among others; in addition to use in a factory, welding can be performed in a variety of environments, such as the field, underwater, and space; wherever welding can be dangerous for the operator, appropriate precautions must be taken while welding is being performed; the injuries possibly caused by welding to human bodies include burns, electric shock, visual damage, toxic gas inhalation, over-irradiation of ultraviolet rays and the like;

in addition, the mechanical arm drives the welding head to weld, the positioning precision is low in the motion process of the mechanical arm, and vibration can be generated in the welding process, so that the machining precision is greatly reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a welding machine for robot machining and manufacturing, which at least solves the problems that in the prior art, a welding head is unstable in movement, and the working efficiency of the welding machine is low due to the fact that the processes of clamping and disassembling a part to be welded are complex and long in time.

In order to achieve the purpose, the utility model provides the following technical scheme: a welding machine for robot machining and manufacturing, comprising: a box body; the main shaft is rotatably arranged at the middle position of the top of the box body; the working platform is fixedly arranged at the top end of the box body; the second supporting seat is arranged at the left end of the top of the box body; the two clamps are respectively and fixedly arranged on the left side and the right side of the working platform; the two support assemblies are respectively fixedly arranged on the left side and the right side of the top of the working platform and support the bottom of the working platform; the station switching mechanism is arranged at the bottom of the inner cavity of the box body and is fixedly connected with the main shaft; the welding mechanism is fixedly arranged at the top end of the second supporting seat; the PLC controller is fixedly arranged at the right end of the front side of the box body, and the station switching mechanism and the welding mechanism are electrically connected with the PLC controller; the baffle is fixedly arranged in the middle of the top of the working platform;

the station shifter mechanism includes: the motor is fixedly arranged at the bottom of the inner cavity of the box body and is electrically connected with the PLC; the transmission shaft is rotatably arranged on the left side of the top of the inner cavity of the box body; the transmission shaft is connected with the output end of the motor through the grooved pulley assembly; the transmission shaft is connected with the bottom end of the main shaft through the gear assembly;

the welding mechanism includes: the first sliding assembly is fixedly arranged at the top end of the second supporting seat and is electrically connected with the PLC; the second sliding assembly is arranged at the top end of the first sliding assembly and is electrically connected with the PLC; the lifting assembly is fixedly arranged on the front side of the second sliding assembly and is electrically connected with the PLC; and the welding head is fixedly arranged at the bottom of the lifting assembly and is electrically connected with the PLC.

Preferably, the support assembly comprises: the adjusting sheets of the two supporting assemblies are respectively arranged on the left side and the right side of the top of the box body; the first supporting seat is fixedly arranged at the top end of the adjusting sheet; the supporting shaft is matched and inserted into the top of the first supporting seat, one end of the supporting shaft is provided with a shaft shoulder, and the shaft shoulder limits the supporting shaft; the spring piece is clamped at the other end of the supporting shaft; and the roller is rotatably arranged on the outer wall of the supporting shaft and supports the bottom of the working platform.

Preferably, the sheave assembly comprises: the drive plate is arranged at the output end of the motor; the grooved wheel is installed at the bottom end of the transmission shaft, and the driving plate is matched with the grooved wheel.

Preferably, the top of driver plate is provided with the actuating lever, the top of sheave is provided with the locking arc, just the lateral wall of sheave is provided with a plurality of radial spout along circumference equidistance, the intermittent one of them of entering of actuating lever drive the sheave in the radial spout and rotate, the quantity of radial spout is four for the sheave rotates 90 degrees at every turn.

Preferably, the gear assembly comprises: the first gear is fixedly arranged in the middle of the transmission shaft; the second gear, fixed mounting in the bottom of main shaft, first gear and second gear looks adaptation meshing, just first gear tooth number is twice of second gear tooth number.

Preferably, the first sliding assembly includes: the first sliding rail is fixedly arranged at the top end of the second supporting seat and is electrically connected with the PLC; and the first sliding table is slidably arranged at the top of the first sliding rail.

Preferably, the second sliding assembly includes: the supporting plate is fixedly arranged at the top of the first sliding table; the number of the rib plates is a plurality, and the rib plates are arranged on the rear side of the supporting plate from left to right respectively; the second sliding rail is fixedly arranged on the front side of the supporting plate and is electrically connected with the PLC; the second sliding table is slidably mounted on the front side of the second sliding rail; and the balancing weight is fixedly arranged at the left end of the rear side of the supporting plate.

Preferably, the lifting assembly comprises: the mounting plate is fixedly mounted on the front side of the second sliding table; the pneumatic rod is fixedly arranged at the top end of the front side of the mounting plate and is electrically connected with the PLC; the fixed sleeve is fixedly arranged at the output end of the pneumatic rod, and the welding head is in adaptive insertion connection with the fixed sleeve.

Compared with the prior art, the utility model has the beneficial effects that: the welding machine for processing and manufacturing the robot drives the output end of the motor to rotate through the PLC, the output end of the motor drives the driving plate to rotate, when a driving rod at the top end of the driving plate does not enter a radial sliding groove of the grooved wheel, the concave locking arc at the top of the grooved wheel is clamped by the top end of the driving plate and cannot rotate, so that the rotating positioning precision of the rotating shaft is ensured, when the driving rod just enters the radial sliding groove of the grooved wheel, the locking arc is just loosened, the grooved wheel rotates under the driving of the driving rod, when the driving rod leaves the radial sliding groove, the locking arc at the top end of the grooved wheel is clamped by the driving plate, the grooved wheel is static, the driving rod intermittently enters the next radial sliding groove to drive the grooved wheel to rotate, so that each rotation degree of the transmission shaft is realized, when the transmission shaft rotates, under the meshing action of the first gear and the second gear, the main shaft rotates reversely relative to the transmission shaft, and because the gear ratio of the first gear and the second gear is equal, according to the fact that the gear speed ratio is inversely proportional to the gear ratio, when the transmission shaft rotates for each time, the main shaft rotates, namely when the output end of the motor rotates for one circle, the main shaft drives the working platform to rotate intermittently, and feeding is achieved; the PLC controller controls the first slide rail to drive the first sliding table to move back and forth, the PLC controller controls the second slide rail to drive the second sliding table to move left and right, the PLC controller controls the output end of the pneumatic rod to move up and down, so that the fixed sleeve drives the welding head to move freely in space for welding, after welding is finished, the PLC controller controls the motor to drive the rotation degree of the working platform, the welded workpiece is rotated to the right side for blanking and changing, the roller of the supporting assembly is rotatably arranged on the outer wall of the supporting shaft and supports the bottom of the working platform, when the roller has a gap or generates interference with the bottom of the working platform, the thickness of the adjusting piece is corrected, so that stable support of the working platform is ensured, therefore, welding and blanking can be carried out simultaneously, the blanking time is saved, the working efficiency of the welding machine is greatly improved, and, the positioning accuracy of the welding head is higher, the movement process is more stable, the stabilizing assembly ensures that the working platform cannot vibrate in the machining process, and the machining accuracy is greatly improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is an enlarged view at A;

FIG. 4 is a right side view of the present invention;

FIG. 5 is a top view of the present invention;

FIG. 6 is a schematic view of the gear assembly installation;

figure 7 is a schematic view of a sheave assembly installation.

In the figure: 2. the device comprises a box body, 3, a spindle, 4, a working platform, 5, a supporting component, 51, a first supporting seat, 52, a supporting shaft, 53, a roller, 54, a spring piece, 55, an adjusting sheet, 6, a station switching mechanism, 61, a motor, 62, a rotating shaft, 63, a grooved pulley component, 631, a dial, 632, a grooved pulley, 64, a gear component, 641, a first gear, 642, a second gear, 7, a second supporting seat, 8, a welding mechanism, 81, a first sliding component, 811, a first sliding rail, 812, a first sliding table, 82, a second sliding component, 821, a supporting plate, 822, a ribbed plate, 823, a second sliding rail, 824, a second sliding table, 825, a balancing weight, 83, a lifting component, 831, a mounting plate, 832, a pneumatic rod, 833, a fixing sleeve, 84, a welding joint, 9, a PLC controller, 10, a clamp, 11 and a baffle.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides a technical solution: a welding machine for robot machining and manufacturing, comprising: the device comprises a box body 2, a main shaft 3, a working platform 4, a supporting component 5, a station switching mechanism 6, a second supporting seat 7, a welding mechanism 8, a PLC (programmable logic controller) 9, a clamp 10 and a baffle 11, wherein the main shaft 3 is rotatably arranged at the middle position of the top of the box body 2, the working platform 4 is fixedly arranged at the top end of the box body 2, the second supporting seat 7 is arranged at the left end of the top of the box body 2, the number of the clamp 10 is two, the clamp is respectively and fixedly arranged at the left side and the right side of the working platform 4, the supporting component 5 is respectively and fixedly arranged at the left side and the right side of the top of the working platform 4 and supports the bottom of the working platform 4, the station switching mechanism 6 is arranged at the bottom of an inner cavity of the box body 2 and is fixedly connected with the main shaft 3, the welding mechanism 8 is fixedly arranged at the top end of the second supporting seat 7, the PLC controller 9 is fixedly arranged at the right end of the front side of the box body 2, and the station switching mechanism 6 and the welding mechanism 8 are both electrically connected with the PLC controller 9, the PLC controller 9 is formed by modularizing an internal CPU, an instruction and data memory, an input/output unit, a power supply module, a digital analog unit and the like, instructions for executing operations such as logic operation, sequence control, timing, counting, arithmetic operation and the like are stored in the PLC controller, various types of mechanical equipment or production processes are controlled through digital or analog input and output, and a baffle plate 11 is fixedly arranged at the middle position of the top of the working platform 4;

the station switching mechanism 6 includes: the motor 61 is fixedly installed at the bottom of the inner cavity of the box body 2 and is electrically connected with the PLC 9, the transmission shaft 62 is rotatably installed at the left side of the top of the inner cavity of the box body 2, the transmission shaft 62 of the sheave assembly 63 is connected with the output end of the motor 61 through the sheave assembly 63, the transmission shaft 62 of the gear assembly 64 is connected with the bottom end of the main shaft 3 through the gear assembly 64, and the sheave assembly 63 is mainly applied to intermittent transmission;

the welding mechanism 8 includes: first slip subassembly 81, second slip subassembly 82, lift subassembly 83 and soldered connection 84, first slip subassembly 81 fixed mounting is in the top of second supporting seat 7, and with PLC controller 9 electric connection, second slip subassembly 82 is installed in the top of first slip subassembly 81, and with PLC controller 9 electric connection, lift subassembly 83 fixed mounting is in the front side of second slip subassembly 82, and with PLC controller 9 electric connection, soldered connection 84 fixed mounting is in the bottom of lift subassembly 83, and with PLC controller 9 electric connection.

Preferably, the support assembly 5 further comprises: first supporting seat 51, the support shaft 52, gyro wheel 53, spring leaf 54 and trimmer 55, the trimmer 55 of two supporting component 5 of trimmer 55 sets up respectively in the top left and right sides of box 2, first supporting seat 51 fixed mounting is in the top of trimmer 55, because first supporting seat 51 adopts the foundry goods mostly in the concrete implementation, there is the clearance or produces when interfering in gyro wheel 53 and work platform 4 bottom, revise the thickness of trimmer 55, thereby guarantee the stable support to work platform 4, support shaft 52 looks adaptation is pegged graft in the top of first supporting seat 51, the one end of support shaft 52 is provided with the shaft shoulder, the shaft shoulder is spacing to support shaft 52, spring leaf 54 joint is in the other end of support shaft 52, gyro wheel 53 rotatably installs in the outer wall of support shaft 52, and gyro wheel 53 supports work platform 4 bottom.

Preferably, the sheave assembly 63 further includes: a dial 631 and a grooved wheel 632, wherein the dial 631 is mounted at the output end of the motor 61, the grooved wheel 632 is mounted at the bottom end of the transmission shaft 62, and the dial 631 is matched with the grooved wheel 632, so that the dial 631 can drive the dial 632 to rotate.

As a preferable scheme, further, a driving rod is arranged at the top end of the driving plate 631, a locking arc is arranged at the top end of the grooved pulley 632, a plurality of radial sliding grooves are equidistantly arranged on the side wall of the grooved pulley 632 along the circumferential direction, the driving rod intermittently enters one of the radial sliding grooves to drive the grooved pulley 632 to rotate, the number of the radial sliding grooves is four, so that the grooved pulley 632 rotates 90 degrees at a time, and thus the intermittent rotation of the grooved pulley 632 is realized.

Still further, the gear assembly 64 preferably includes: the first gear 641 is fixedly installed in the middle of the transmission shaft 62, the second gear 642 is fixedly installed at the bottom end of the main shaft 3, the first gear 641 is in fit engagement with the second gear 642, and the number of teeth of the first gear 641 is twice that of the second gear 642, so that the rotation speed of the main shaft 4 is twice that of the transmission shaft 62.

Preferably, the first sliding assembly 81 further includes: first slide rail 811 and first slip table 812, first slide rail 811 fixed mounting in the top of second supporting seat 7, and with PLC controller 9 electric connection, first slip table 812 slidable mounting in the top of first slide rail 811, PLC controller 9 can control first slide rail 811 drive first slip table 812 back-and-forth movement.

Preferably, the second sliding assembly 82 further comprises: the backup pad 821, floor 822, second slide rail 823, second slip table 824 and balancing weight 825, backup pad 821 fixed mounting is in the top of first slip table 812, floor 822 quantity is a plurality of, set up in the rear side of backup pad 821 from a left side to the right side respectively, second slide rail 823 fixed mounting is in the front side of backup pad 821, and with PLC controller 9 electric connection, second slip table 824 slidable mounting is in the front side of second slide rail 823, PLC controller 9 can control second slide rail 823 drive second slip table 824 horizontal slip, balancing weight 825 fixed mounting is in the rear side left end of backup pad 821, balancing weight 825 can balance the weight of second slip table 824.

Preferably, the lifting assembly 83 further includes: mounting panel 831, pneumatic rod 832 and fixed cover 833, mounting panel 831 fixed mounting is in the front side of second slip table 824, pneumatic rod 832 fixed mounting is on the front side top of mounting panel 831, and with PLC controller 9 electric connection, fixed cover 833 fixed mounting is in the output of pneumatic rod 832, and soldered connection 84 pegs graft with fixed cover 833 looks adaptation, and PLC controller 9 can control pneumatic rod 832 drive fixed cover 833 drive soldered connection 84 and reciprocate.

The detailed connection means is well known in the art, and the following mainly describes the working principle and process, and the specific operation is as follows.

Firstly, a feeding manipulator or an operator manually fixes a part to be welded on the top of a clamp 10 on the right side, a PLC (programmable logic controller) 9 drives an output end of a motor 61 to rotate, the output end of the motor 61 drives a dial 631 to rotate, when a driving rod at the top end of the dial 631 does not enter a radial sliding groove of a grooved wheel 632, a concave locking arc at the top end of the grooved wheel 632 is clamped by the top end of the dial 631 and cannot rotate, so that the rotating positioning precision of a rotating shaft 62 is ensured, when the driving rod just enters the radial sliding groove of the grooved wheel 632, the locking arc is just loosened, the grooved wheel 632 is driven by the driving rod to rotate, when the driving rod leaves the radial sliding groove, the locking arc at the top end of the grooved wheel 632 is clamped by the dial 631, the grooved wheel 632 is stationary, the driving rod intermittently enters the next radial sliding groove to drive the grooved wheel 632 to rotate, so that the transmission shaft 62 rotates 90 degrees each time, when the transmission shaft 62 rotates, under the meshing action of the first gear 641 and the second gear 642, the spindle 3 rotates in the reverse direction relative to the transmission shaft 62, and because the gear ratio of the first gear 641 to the second gear 642 is 2, the gear ratio is inversely proportional to the gear ratio according to the gear speed ratio, when the transmission shaft 62 rotates 90 degrees each time, the spindle 3 rotates 180 degrees, that is, when the output end of the motor 61 rotates one cycle, the spindle 3 drives the working platform 4 to intermittently rotate 180 degrees, so that the feeding is realized;

step two, controlling a first sliding rail 811 to drive a first sliding table 812 to move back and forth through a PLC (programmable logic controller) 9, controlling a second sliding rail 823 to drive a second sliding table 824 to move left and right through the PLC 9, controlling the output end of a pneumatic rod 832 to move up and down through the PLC 9, so that a fixed sleeve 833 can drive a welding head 84 to move freely in space for welding, after welding is finished, controlling a motor 61 to drive a working platform 4 to rotate 180 degrees by the PLC 9, rotating a welded workpiece to the right side for blanking and changing materials, rotatably installing a roller 53 of a supporting assembly 5 on the outer wall of a supporting shaft 52, supporting the bottom of the working platform 4 through the roller 53, and correcting the thickness of an adjusting sheet 55 when a gap exists between the roller 53 and the bottom of the working platform 4 or interference occurs, so as to ensure stable support of the working platform 4;

the device provides two stations, can replace parts in the clamp of the other station in the welding process, greatly improves the working efficiency of the welding machine, and has higher positioning precision of a welding head and more stable movement process.

In the description of the present invention, it is to be understood that the terms "bottom", "one end", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated; unless otherwise specifically stated or limited, the terms "snap" and "connect" and "set" and "open" and "electrically connect" and "fixedly connect" are to be understood in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate agent, and may be used for communicating the inside of two elements or interacting relation of two elements, unless otherwise specifically defined, and the specific meaning of the terms in the present invention can be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A welding machine for robot machining and manufacturing, comprising: box (2), main shaft (3), work platform (4), second supporting seat (7) and two anchor clamps (10), main shaft (3) rotatably install in the top intermediate position of box (2), work platform (4) fixed mounting is on the top of box (2), second supporting seat (7) set up in the top left end of box (2), two anchor clamps (10) fixed mounting is in the left and right sides of work platform (4) respectively, and its characterized in that still includes:

the two supporting assemblies (5) are fixedly arranged on the left side and the right side of the top of the working platform (4) respectively and support the bottom of the working platform (4);

the station switching mechanism (6) is arranged at the bottom of the inner cavity of the box body (2) and is fixedly connected with the main shaft (3);

the welding mechanism (8) is fixedly arranged at the top end of the second supporting seat (7);

the PLC (9) is fixedly arranged at the right end of the front side of the box body (2), and the station switching mechanism (6) and the welding mechanism (8) are electrically connected with the PLC (9);

the baffle (11) is fixedly arranged in the middle of the top of the working platform (4);

the station switching mechanism (6) comprises:

the motor (61) is fixedly arranged at the bottom of the inner cavity of the box body (2) and is electrically connected with the PLC (9);

the transmission shaft (62) is rotatably arranged on the left side of the top of the inner cavity of the box body (2);

the sheave assembly (63) is used for connecting the transmission shaft (62) with the output end of the motor (61) through the sheave assembly (63);

the transmission shaft (62) is connected with the bottom end of the main shaft (3) through the gear assembly (64);

the welding mechanism (8) includes:

the first sliding assembly (81) is fixedly arranged at the top end of the second supporting seat (7) and is electrically connected with the PLC (9);

the second sliding assembly (82) is installed at the top end of the first sliding assembly (81) and is electrically connected with the PLC (9);

the lifting component (83) is fixedly arranged on the front side of the second sliding component (82) and is electrically connected with the PLC (9);

and the welding head (84) is fixedly arranged at the bottom of the lifting component (83) and is electrically connected with the PLC (9).

2. The welding machine for robot machining and manufacturing according to claim 1, wherein: the support assembly (5) comprises:

the adjusting sheets (55) of the two supporting components (5) are respectively arranged at the left side and the right side of the top of the box body (2);

a first supporting seat (51) fixedly arranged at the top end of the adjusting sheet (55);

the supporting shaft (52) is matched and inserted into the top of the first supporting seat (51), a shaft shoulder is arranged at one end of the supporting shaft (52), and the shaft shoulder limits the supporting shaft (52);

a spring piece (54) which is clamped at the other end of the supporting shaft (52);

and the roller (53) is rotatably arranged on the outer wall of the supporting shaft (52), and the roller (53) supports the bottom of the working platform (4).

3. The welding machine for robot machining and manufacturing according to claim 1, wherein: the sheave assembly (63) includes:

a dial (631) mounted to an output end of the motor (61);

a grooved wheel (632) is arranged at the bottom end of the transmission shaft (62), and the driving plate (631) is matched with the grooved wheel (632).

4. The welding machine for robot machining and manufacturing according to claim 3, wherein: the top end of the driving plate (631) is provided with a driving rod, the top end of the grooved wheel (632) is provided with a locking arc, the side wall of the grooved wheel (632) is provided with a plurality of radial sliding grooves along the circumferential direction at equal intervals, the driving rod intermittently enters one of the radial sliding grooves to drive the grooved wheel (632) to rotate, and the number of the radial sliding grooves is four, so that the grooved wheel (632) rotates 90 degrees at each time.

5. The welding machine for robot machining and manufacturing according to claim 1, wherein: the gear assembly (64) includes:

a first gear (641) fixedly mounted on the middle part of the transmission shaft (62);

the second gear (642) is fixedly arranged at the bottom end of the main shaft (3), the first gear (641) is in fit engagement with the second gear (642), and the number of teeth of the first gear (641) is twice that of the second gear (642).

6. The welding machine for robot machining and manufacturing according to claim 1, wherein: the first sliding assembly (81) comprises:

the first sliding rail (811) is fixedly arranged at the top end of the second supporting seat (7) and is electrically connected with the PLC (9);

and the first sliding table (812) is slidably mounted at the top of the first sliding rail (811).

7. The welding machine for robot machining and manufacturing according to claim 6, wherein: the second slide assembly (82) includes:

a supporting plate (821) fixedly arranged on the top of the first sliding table (812);

a plurality of rib plates (822) which are respectively arranged at the rear side of the supporting plate (821) from left to right;

the second sliding rail (823) is fixedly installed on the front side of the supporting plate (821) and is electrically connected with the PLC (9);

the second sliding table (824) is slidably mounted on the front side of the second sliding rail (823);

and the balancing weight (825) is fixedly arranged at the left end of the rear side of the supporting plate (821).

8. The welding machine for robot machining and manufacturing according to claim 7, wherein: the lifting assembly (83) comprises:

a mounting plate (831) fixedly mounted on the front side of the second sliding table (824);

the pneumatic rod (832) is fixedly arranged at the top end of the front side of the mounting plate (831) and is electrically connected with the PLC (9);

and the fixed sleeve (833) is fixedly arranged at the output end of the pneumatic rod (832), and the welding head (84) is in adaptive insertion connection with the fixed sleeve (833).