A multi-station welding equipment

Abstract

The present invention discloses a multi-station welding device, comprising a hollow frame, right-angled frames are installed on both outer walls of the hollow frame, and the tops of the two right-angled frames are respectively installed with a left multi-station pipe transfer module and a right multi-station pipe transfer module for synchronously and horizontally conveying multiple copper pipes into the hollow frame, and a gear drive unit for driving the left multi-station pipe transfer module and the right multi-station pipe transfer module is installed on the top wall of the hollow frame. The present invention utilizes the left and right multi-station transfer modules to drive the copper pipes to move, thereby ensuring the accurate positioning and docking of the copper pipes, without the need for manual docking one by one, thereby saving a lot of operation time and labor costs, and the use of the toothed belt multi-station welding module can quickly complete the welding operation of multiple butted pipes, and the operator does not need to stand for a long time or continuously operate the welding gun, reducing operation fatigue and work intensity.

Description

Technical Field

[0001] The invention relates to the technical field of copper pipe welding, in particular to a multi-station welding device. Background Art

[0002] The welding equipment for copper pipe butt joint ensures the control of welding temperature, pressure and environment through the precise coordination of heating system, pressure system and protective gas system, thus achieving high-quality welding connection. The heating system uses electric heating wire or induction heating coil to provide the required heat, and accurately adjusts the temperature through the heating controller. The pressure system applies appropriate pressure through hydraulic or pneumatic mechanisms to ensure the tight connection of the welding interface. Specifically in actual operation, the welding equipment completes the entire welding process through preparation, clamping and positioning, heating and pressing, gas protection, and final cooling and inspection steps; as disclosed in application publication number CN113714702A, a universal welding tool for multiple stations and a welding method based on the tool include two symmetrically arranged brackets, each of which is vertically provided with a slide groove, and a base is installed between the two brackets. The base can be slid up and down in the slide groove and can be rotated around the connection with the slide groove. At least two mounting seats are arranged on the base along the length direction of the base, and each mounting seat is detachably installed with a welding fixing head, and the welding fixing head is composed of cylindrical assemblies from large to small stacked from bottom to top, so that the welding The fixed head has a stepped structure, which is suitable for welding copper tubes of different diameters. There is no need to change the mold, which effectively improves work efficiency and is convenient for sorting and placement. The base can move up and down to adjust the position or rotate the angle to adapt to the welding of copper tubes of different shapes or angles. However, the above technical solution requires workers to use welding guns to move the copper tubes one by one or to weld multiple welding guns at the same time. In this process, the workers need to manually control the two copper tubes to connect in advance before they can use the welding gun to form a weld at the copper tube connection. At this time, the workers need to connect the copper tubes one by one in advance to form multiple welding stations. This process will take a lot of time, and accurate docking of the copper tube ends is crucial to forming high-quality welded joints. If the docking position is not accurate or the docking angles of the two tubes do not match, it will also lead to uneven welds or insufficient strength of the welded joints during the welding process. Summary of the invention

[0003] The object of the present invention is to provide a multi-station welding device, in which a left multi-station pipe fitting transfer module and a right multi-station pipe fitting transfer module support and transport copper pipes to be welded, and the left multi-station pipe fitting transfer module and the right multi-station pipe fitting transfer module drive the copper pipes to move together under the drive of a gear driving unit, so that two copper pipes on the same horizontal line approach each other until the ends are in stable contact, and the butt-jointed copper pipes are fixed by a pipe end positioning mechanism, and a toothed belt multi-station welding module performs welding processing on multiple butt-jointed copper pipes, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a multi-station welding device, comprising:

[0005] A hollow frame, wherein right-angle frames are installed on both outer walls of the hollow frame, and the tops of the two right-angle frames are respectively installed with a left multi-station pipe transfer module and a right multi-station pipe transfer module for synchronously and horizontally transporting multiple copper pipes into the hollow frame, and a gear drive unit for driving the left multi-station pipe transfer module and the right multi-station pipe transfer module to work is installed on the top wall of the hollow frame;

[0006] A T-shaped frame, which is fixed at the top of the hollow frame, and two symmetrical pipe end positioning mechanisms are installed on the inner wall of one side of the T-shaped frame, which are used to press down and fix the copper pipes horizontally transported by the left multi-station pipe transfer module and the right multi-station pipe transfer module;

[0007] A toothed belt multi-station welding module is arranged on an outer wall of one side of a T-frame and is used for performing annular welding on each pair of copper tubes butted against each other. A PLC control panel is installed on one side of the surface of the hollow frame, and an output end of the PLC control panel is electrically connected to an input end of a gear drive unit, a tube end positioning mechanism, and a toothed belt multi-station welding module.

[0008] Preferably, the left multi-station pipe transfer module and the right multi-station pipe transfer module have the same structural composition, the left multi-station pipe transfer module includes a base plate fixed to the top of the right-angle frame, a plurality of V-shaped bases distributed in a rectangular array on the upper surface of the base plate, two symmetrical U-shaped shaft supports installed on both sides of the top of the V-shaped base, and a steel roller rotatably installed inside the U-shaped shaft support, a bearing seat is fixed to the outer wall of one side of the base plate, and a vertical shaft is rotatably installed on the top of the bearing seat, a universal coupling is installed on the top of the vertical shaft, and a bevel gear transmission structure for maintaining power connection is installed between the top of the universal coupling and one end of one of the steel rollers.

[0009] Preferably, a belt transmission structure 1 is installed between the multiple vertical shafts in the same Y-axis direction.

[0010] Preferably, a plurality of equally spaced hosting guide channels are installed at the top of the right-angle stand, and a completely penetrating V-shaped groove is provided at the top of the hosting guide channel.

[0011] Preferably, gantry-type height-limiting beams are fixed at both edge positions of the top end of the hollow frame, and the extension direction of the gantry-type height-limiting beams is perpendicular to the extension direction of the hosting guide path.

[0012] Preferably, the gear drive unit includes a servo motor fixed on the top wall of the hollow frame and a gear transmission structure installed at the output end of the servo motor for driving the vertical shaft to rotate, and the gear transmission structure is a gear plate installed at the bottom end of the vertical shaft.

[0013] Preferably, the pipe end positioning mechanism includes a bracket fixed on one side of the top of the T-frame, a cylinder installed on the top of the bracket, and a sliding sleeve fixed at the bottom end of the cylinder piston rod, and a pressure arm parallel to the gantry-type height limiting beam is installed at the bottom end of the sliding sleeve, and a plurality of equally spaced V-shaped upper grooves are provided on the lower surface of the pressure arm.

[0014] Preferably, the toothed belt type multi-station welding module includes a plurality of external gear rings rotatably mounted on the outer wall of one side of a T-frame, a transmission shaft rotatably mounted on the outer wall of the T-frame above the external gear rings, a lead screw linear module installed at the edge of the surface of the external gear rings, and a welding gun body installed at the moving end of the lead screw linear module, a driving gear for meshing with the external gear rings is fixed on the surface of the transmission shaft, and a rotating drive unit for driving multiple transmission shafts to work synchronously is installed on the outer wall of the other side of the T-frame.

[0015] Preferably, the rotation drive unit includes a belt drive structure 2 installed between several transmission shafts and a second motor installed on the outer wall on the other side of the T-frame. The output end of the second motor is fixedly connected to one end of one of the transmission shafts through a coupling, and the input end of the second motor and the lead screw linear module is electrically connected to the output end of the PLC control panel.

[0016] Preferably, the gantry-type height-limiting beam and the trustee guide way are both made of stainless steel components, and three trustee guide ways are provided, and the three trustee guide ways are symmetrically structured about the X-axis center reference plane of the hollow frame.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: the multi-station welding equipment is provided with a left multi-station pipe transfer module and a toothed belt multi-station welding module and other structures that cooperate with each other. During the movement of the copper pipe, the left and right multi-station transfer modules drive the copper pipe to ensure accurate positioning and docking, without the need for manual docking one by one, thereby saving a lot of operation time and labor costs, and this parallel processing can significantly improve production efficiency, and the copper pipes can be stably docked on the same horizontal line and fixed by the pipe end positioning mechanism, reducing the influence of manual operation factors on welding quality, ensuring that each welding can be completed accurately, and at the same time, the use of the toothed belt multi-station welding module can quickly complete the welding operations of multiple butt-jointed pipes, and the operator does not need to stand for a long time or continuously operate the welding gun, reducing operating fatigue and work intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ;

[0019] Figure 2 The three-dimensional structure of the present invention is shown in FIG. Figure 2 ;

[0020] Figure 3 It is a schematic diagram of the main structure of the present invention;

[0021] Figure 4 It is a side view structural schematic diagram of the present invention;

[0022] Figure 5 The three-dimensional structure of the present invention is shown in FIG. Figure 3 ;

[0023] Figure 6 This is a schematic diagram of the three-dimensional structure of the left multi-station pipe transfer module of the second embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of the three-dimensional structure of the pipe end positioning mechanism according to the third embodiment of the present invention;

[0025] Figure 8 It is a schematic diagram of the three-dimensional structure of a toothed belt multi-station welding module according to the third embodiment of the present invention.

[0026] In the figure: 1. hollow frame; 2. right-angle frame; 201. trustee guideway; 3. gantry height limit beam; 4. left multi-station pipe transfer module; 401. bottom plate; 402. V-shaped base; 403. U-shaped shaft support; 404. steel roller; 405. bearing seat; 406. vertical shaft; 407. universal coupling; 408. bevel gear transmission structure; 409. belt transmission structure 1; 5. right multi-station pipe transfer module; 6. gear drive unit; 601. servo motor; 602, gear transmission structure; 7, PLC control panel; 8, T-frame; 9, pipe end positioning mechanism; 901, bracket; 902, cylinder; 903, sleeve; 904, pressure arm; 905, V-shaped upper groove; 10, toothed belt type multi-station welding module; 1001, outer gear ring; 1002, screw linear module; 1003, welding gun body; 1004, transmission shaft; 1005, driving gear; 1006, belt transmission structure II; 1007, second motor. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the 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.

[0028] Embodiment 1, by Figures 1 to 5 The present invention includes a hollow frame 1, both outer walls of which are provided with right-angled frames 2, and the tops of the two right-angled frames 2 are respectively provided with a left multi-station pipe transfer module 4 and a right multi-station pipe transfer module 5 for synchronously and horizontally transporting a plurality of copper pipes into the hollow frame 1, and a pair of gear drive units 6 for driving the left multi-station pipe transfer module 4 and the right multi-station pipe transfer module 5 to work are installed on the top wall of the hollow frame 1;

[0029] A T-shaped frame 8 is fixed at the top of the hollow frame 1, and two symmetrical pipe end positioning mechanisms 9 are installed on the inner wall of one side of the T-shaped frame 8, which are used to press down and fix the copper pipes horizontally transported by the left multi-station pipe transfer module 4 and the right multi-station pipe transfer module 5;

[0030] A toothed belt type multi-station welding module 10 is arranged on one side outer wall of the T-shaped frame 8, and is used for annular welding of each pair of copper tubes butted together. A PLC control panel 7 is installed on one side of the surface of the hollow frame 1, and the output end of the PLC control panel 7 is electrically connected to the input end of the gear drive unit 6, the tube end positioning mechanism 9, and the toothed belt type multi-station welding module 10;

[0031] A number of equally spaced trustee guides 201 are installed at the top of the right-angle stand 2. A completely penetrating V-shaped groove is set at the top of the trustee guide 201. Gantry-type height-limiting beams 3 are fixed at the two edge positions of the top of the hollow frame 1. The extension direction of the gantry-type height-limiting beam 3 is perpendicular to the extension direction of the trustee guide 201. The gantry-type height-limiting beam 3 and the trustee guide 201 are both made of stainless steel components. There are three trustee guides 201. The three trustee guides 201 are symmetrical about the X-axis center reference plane of the hollow frame 1. The staff places the copper pipe to be welded on the trustee guide 201. The V-shaped groove on the trustee guide 201 can make it suitable for supporting copper pipes of different diameters.

[0032] The pipe end positioning mechanism 9 includes a bracket 901 fixed to one side of the top of the T-shaped frame 8, a cylinder 902 installed at the top of the bracket 901, and a sleeve 903 fixed to the bottom end of the piston rod of the cylinder 902. A pressure arm 904 parallel to the gantry-type height-limiting beam 3 is installed at the bottom end of the sleeve 903, and a plurality of V-shaped upper grooves 905 with equal spacing are arranged on the lower surface of the pressure arm 904.

[0033] When the copper tube is moved into position by the left multi-station pipe transfer module 4 and the right multi-station pipe transfer module 5, the staff turns on the pipe end positioning mechanism 9 through the PLC control panel 7, and the cylinder 902 drives the sleeve 903 and the pressure arm 904 to move downward until the copper tube is stuck in the V-shaped upper groove 905 of the pressure arm 904, so that the copper tube is fixed, thereby ensuring that it is in the appropriate welding position.

[0034] Embodiment 2, based on embodiment 1, Figure 6 It is shown that the left multi-station pipe transfer module 4 and the right multi-station pipe transfer module 5 have the same structure and work synchronously in the opposite direction under the control of the gear drive unit 6;

[0035] The left multi-station pipe transfer module 4 includes a bottom plate 401 fixed on the top of the right-angle stand 2, a plurality of V-shaped bases 402 distributed in a rectangular array on the upper surface of the bottom plate 401, U-shaped shaft supports 403 installed on both sides of the top of the V-shaped base 402, and steel rollers 404 rotatably installed inside the U-shaped shaft supports 403. A bearing seat 405 is fixed on the outer wall of one side of the bottom plate 401, and a vertical shaft 406 is rotatably installed on the top of the bearing seat 405. The angle of the V-shaped groove of the pipe guide 201 is the same as the angle between the two steel rollers 404, so as to ensure that the steel rollers 404 can stably transport the pipes.

[0036] The gear drive unit 6 includes a servo motor 601 fixed on the top wall of the hollow frame 1 and a gear transmission structure 602 installed at the output end of the servo motor 601 for driving the vertical shaft 406 to rotate. The gear transmission structure 602 is a toothed disc installed at the bottom end of the vertical shaft 406.

[0037] A belt transmission structure 409 is installed between the multiple vertical shafts 406 in the same Y-axis direction. The servo motor 601 drives a vertical shaft 406 in the left multi-station pipe transfer module 4 to rotate through the gear transmission structure 602, and the multiple vertical shafts 406 in the same Y-axis direction are connected by the belt transmission structure 409 to achieve the purpose of simultaneous rotation.

[0038] A universal coupling 407 is installed at the top of the vertical shaft 406, and a bevel gear transmission structure 408 for maintaining power connection is installed between the top of the universal coupling 407 and one end of one of the steel rollers 404. For the steel rollers 404 that are symmetrical in pairs, the vertical shaft 406 drives one of the steel rollers 404 to rotate through the universal coupling 407 and the bevel gear transmission structure 408, and then the steel roller 404 moves the copper tube in the X-axis direction, while the other steel roller 404 supports and assists the movement of the copper tube until the left multi-station pipe fitting transfer module 4 and the right multi-station pipe fitting transfer module 5 complete the docking of the two copper tubes on the same straight line. In this process, the left multi-station pipe fitting transfer module 4 and the right multi-station pipe fitting transfer module 5 can process multiple copper tubes at the same time and accurately transfer them from the initial position to the welding work area. Compared with manual operation or a single transfer device, the multi-station transfer module can greatly improve production efficiency and speed up the welding production cycle of the entire copper tube.

[0039] Embodiment 3, based on embodiment 1, Figure 7 and Figure 8 It is given that the toothed belt type multi-station welding module 10 includes a plurality of outer toothed rings 1001 rotatably mounted on the outer wall of one side of the T-frame 8, a transmission shaft 1004 rotatably mounted on the outer wall of the T-frame 8 above the outer toothed ring 1001, a screw linear module 1002 mounted at the edge of the surface of the outer toothed ring 1001, and a welding gun body 1003 mounted at the moving end of the screw linear module 1002. The two copper tubes will be moved to the inside of the outer toothed ring 1001 by the left multi-station pipe transfer module 4 and the right multi-station pipe transfer module 5. At this time, the workers The operator controls the screw linear module 1002 to work through the PLC control panel 7, so that the screw linear module 1002 drives the welding gun body 1003 to approach the center point of the outer gear ring 1001 and the copper tube until the gun head of the welding gun body 1003 is located at the junction of the two copper tubes. The surface of the transmission shaft 1004 is fixed with a driving gear 1005 for meshing with the outer gear ring 1001, and the outer wall of the other side of the T-frame 8 is installed with a rotation drive unit for driving multiple transmission shafts 1004 to work synchronously;

[0040] The rotation drive unit includes a belt drive structure 1006 installed between a plurality of transmission shafts 1004 and a second motor 1007 installed on the outer wall of the other side of the T-frame 8. The output end of the second motor 1007 is fixedly connected to one end of one of the transmission shafts 1004 through a coupling. The input end of the second motor 1007 and the lead screw linear module 1002 are electrically connected to the output end of the PLC control panel 7.

[0041] The staff turns on the welding gun body 1003 and the second motor 1007 to work, and drives multiple transmission shafts 1004 to rotate synchronously through the second motor 1007 and the second belt drive structure 1006. Then the transmission shaft 1004 drives the outer gear ring 1001 to rotate through the active gear 1005, so that the welding gun body 1003 rotates around the outer circumference of the copper tube until the welding of the two copper tubes is completed and a weld is formed at the joint position. This modular structure can handle the welding needs of multiple copper tubes at the same time and ensure that each welding point is completed under the same standard, reducing the influence of human factors on welding quality.

[0042] When the embodiment of the present application is in use, the staff first places a plurality of copper tubes to be connected and welded on the left multi-station pipe transfer module 4 and the right multi-station pipe transfer module 5. At this time, there are copper tubes to be connected on each of the same horizontal linear stations of the left multi-station pipe transfer module 4 and the right multi-station pipe transfer module 5. After the copper tubes are placed, the staff starts the gear drive unit 6 through the PLC control panel 7 to work, and the rotary power of the gear drive unit 6 is synchronously transmitted to the left multi-station pipe transfer module 4, on the right multi-station pipe fitting transfer module 5, at this time, the left multi-station pipe fitting transfer module 4 and the right multi-station pipe fitting transfer module 5 have opposite conveying directions for the copper pipe fittings, and then the two copper pipe fittings on the horizontal straight line approach each other until the relative pipe heads of the two copper pipe fittings touch each other, and the left multi-station pipe fitting transfer module 4 and the right multi-station pipe fitting transfer module 5 accurately transfer the copper pipe along the predetermined path, keeping it horizontal and stable, so that the subsequent welding positioning work can proceed smoothly, when the left multi-station pipe fitting transfer module 4 and the right multi-station pipe fitting transfer module After the copper tube fittings are transferred by block 5, the staff will start the tube end positioning mechanism 9 through the PLC control panel 7 to work, and the tube end positioning mechanism 9 will actively press down and fix the copper tube fittings after docking, so that the two ends of the copper tube fittings after docking maintain a stable docking state, avoiding separation and offset of the ends of the copper tube fittings during subsequent welding operations, thereby providing necessary conditions for the smooth progress of the welding process. When the two copper tube fittings on the same horizontal line are docked and fixed, the toothed belt multi-station welding module 10 starts to work. The toothed belt multi-station welding module 10 is equipped with a plurality of revolving welding guns, each welding head is responsible for a weld of a butt-jointed tube, that is, the welding gun in the toothed belt multi-station welding module 10 rotates around the central axis of the butt-jointed tube and forms a circular weld at the joint of the butt-jointed tube, so as to simultaneously handle the welding needs of multiple copper tube docking. During the operation of the equipment, through the PLC control panel 7, the operator can set welding parameters, monitor the production process, and adjust the system in real time to adapt to different process requirements and production conditions.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-station welding equipment, characterized in that: include: A hollow frame (1), wherein right-angle frames (2) are installed on both outer walls of the hollow frame (1), and the tops of the two right-angle frames (2) are respectively installed with a left multi-station pipe transfer module (4) and a right multi-station pipe transfer module (5) for synchronously and horizontally transporting a plurality of copper pipes into the hollow frame (1), and a gear drive unit (6) for driving the left multi-station pipe transfer module (4) and the right multi-station pipe transfer module (5) to work is installed on the top wall of the hollow frame (1); A T-shaped frame (8), the T-shaped frame (8) being fixed on the top of the hollow frame (1), and two symmetrical pipe end positioning mechanisms (9) being installed on the inner wall of one side of the T-shaped frame (8), for pressing down and fixing the copper pipes transported horizontally by the left multi-station pipe transfer module (4) and the right multi-station pipe transfer module (5); A toothed belt type multi-station welding module (10), the toothed belt type multi-station welding module (10) being arranged on an outer wall of one side of a T-shaped frame (8) and being used for performing annular welding on each pair of copper tubes butted against each other, a PLC control panel (7) being installed on one side of the surface of the hollow frame (1), the output end of the PLC control panel (7) being electrically connected to an input end of a gear drive unit (6), a tube end positioning mechanism (9), and the toothed belt type multi-station welding module (10); The left multi-station pipe transfer module (4) and the right multi-station pipe transfer module (5) have the same structural composition. The left multi-station pipe transfer module (4) comprises a bottom plate (401) fixed to the top of the right-angle stand (2), a plurality of V-shaped bases (402) arranged in a rectangular array on the upper surface of the bottom plate (401), two symmetrical U-shaped shaft supports (403) installed on both sides of the top of the V-shaped base (402), and a steel roller (404) rotatably installed inside the U-shaped shaft support (403). 01) is fixed with a bearing seat (405) on one side outer wall, and a vertical shaft (406) is rotatably mounted on the top of the bearing seat (405), a universal coupling (407) is mounted on the top of the vertical shaft (406), and a bevel gear transmission structure (408) for maintaining power connection is installed between the top of the universal coupling (407) and one end of one of the steel rollers (404); a belt transmission structure (409) is installed between multiple vertical shafts (406) on the same Y-axis direction.

2. A multi-station welding equipment according to claim 1, characterized in that: A plurality of equally spaced hosting guide paths (201) are installed at the top of the right-angle stand (2), and a completely penetrating V-shaped groove is provided at the top of the hosting guide path (201).

3. A multi-station welding equipment according to claim 2, characterized in that: Gantry-type height limiting beams (3) are fixed at both edge positions of the top end of the hollow frame (1), and the extension direction of the gantry-type height limiting beam (3) is perpendicular to the extension direction of the hosting guide path (201).

4. The multi-station welding equipment according to claim 3, characterized in that: The pair of gear drive units (6) comprise a servo motor (601) fixed on the top wall of the hollow frame (1) and a pair of gear transmission structures (602) installed at the output end of the servo motor (601) for driving the vertical shaft (406) to rotate. The pair of gear transmission structures (602) are toothed discs installed at the bottom end of the vertical shaft (406).

5. The multi-station welding equipment according to claim 4, characterized in that: The pipe end positioning mechanism (9) comprises a support seat (901) fixed to one side of the top end of the T-shaped frame (8), a cylinder (902) mounted on the top end of the support seat (901), and a sliding sleeve (903) fixed to the bottom end of the piston rod of the cylinder (902); a pressure arm (904) parallel to the gantry-type height-limiting beam (3) is mounted on the bottom end of the sliding sleeve (903); and a plurality of V-shaped upper grooves (905) at equal intervals are provided on the lower surface of the pressure arm (904).

6. The multi-station welding equipment according to claim 5, characterized in that: The toothed belt type multi-station welding module (10) comprises a plurality of outer toothed rings (1001) rotatably mounted on the outer wall of one side of a T-frame (8), a transmission shaft (1004) rotatably mounted on the outer wall of the T-frame (8) above the outer toothed rings (1001), a lead screw linear module (1002) mounted at the edge of the surface of the outer toothed ring (1001), and a welding gun body (1003) mounted on the movable end of the lead screw linear module (1002), a driving gear (1005) for meshing with the outer toothed ring (1001) being fixed on the surface of the transmission shaft (1004), and a rotation drive unit for driving the plurality of transmission shafts (1004) to work synchronously is mounted on the outer wall of the other side of the T-frame (8).

7. The multi-station welding equipment according to claim 6, characterized in that: The rotary drive unit comprises a second belt drive structure (1006) installed between a plurality of transmission shafts (1004) and a second motor (1007) installed on the outer wall of the other side of the T-frame (8); the output end of the second motor (1007) is fixedly connected to one end of one of the transmission shafts (1004) via a coupling; the input end of the second motor (1007) and the lead screw linear module (1002) are electrically connected to the output end of the PLC control panel (7).

8. The multi-station welding equipment according to claim 7, characterized in that: The gantry-type height-limiting beam (3) and the trustee guide path (201) are both made of stainless steel components. Three trustee guide paths (201) are provided, and the three trustee guide paths (201) are symmetrically structured with respect to the X-axis center reference plane of the hollow frame (1).

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