A pump casing production welding device

Abstract

The present invention discloses a pump casing production welding device, which belongs to the technical field of welding equipment, including a frame plate and a curved clamping module, the frame plate is fixedly arranged at the ground end, and several curved clamping modules are slidably assembled on the frame plate along the circumferential direction, the curved clamping module includes a carrier, a positioning frame and a cross frame, the carrier is sleeved on the frame plate, a sliding frame is provided at one end of the carrier, the positioning frame is movably assembled on the sliding frame, the middle frame is assembled on one side of the positioning frame, the cross frame is assembled on the middle frame, and a slide plate for clamping parts is provided on one side of the cross frame. The present invention can make the curved clamping module circumferentially move between the clamping station and the docking station to realize the positioning and seam alignment of the parts to be welded, and at the same time, the curved clamping module can be used to quickly clamp irregular pump casings, thereby saving time for replacing customized fixtures and improving comprehensive welding efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of welding equipment, and in particular relates to a pump casing production welding device. Background Art

[0002] The production welding of pump casings is a complex process involving material science, process control and quality management, which requires comprehensive consideration of material properties, structural design, welding methods and subsequent processing.

[0003] Chinese patent CN118455739B discloses an automobile water pump housing welding device and a welding process thereof, which mainly consists of a clamping assembly, an inner butt seam welding assembly, and an outer butt seam welding assembly. The welding object is an improved modular automobile water pump housing. The clamping assembly is used to position the modular automobile water pump housing and drive it to flip. The inner butt seam welding assembly is used to weld the inner butt seam of the modular automobile water pump housing, and the outer butt seam welding assembly is used to weld the outer butt seam of the modular automobile water pump housing. The inner butt seam welding assembly is used to weld the annular seam between the balance seat and the balance seat mounting half pipe.

[0004] During actual welding operations, the above-mentioned equipment can only realize the welding of two groups of parts and cannot handle the needs of butt welding of multiple parts. At the same time, when clamping irregular curved pump casing parts, the conventional clamping structure can easily loosen on the curved surface, causing the weld to be distorted and affecting the welding quality. Summary of the Invention

[0005] In view of the deficiencies in the prior art, an embodiment of the present invention aims to provide a pump casing production welding device to solve the problems in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A pump casing production welding device includes a frame component, the frame component includes a frame plate, a groove and an outer gear ring, the frame plate is fixedly arranged on the ground end, and the outer diameter end of the frame plate is provided with a groove and an outer gear ring;

[0008] The pump housing production welding device includes a plurality of curved clamping modules, which are slidably assembled on the frame plate along the circumferential direction. The curved clamping modules include a carrier assembly, a positioning assembly and a clamping arm assembly.

[0009] The carrier assembly includes a carrier, a limit pin, an L-shaped support plate and a sliding frame. The carrier is sleeved on the frame plate, and a limit pin is provided on the inner diameter end of the carrier. The limit pin is limitedly slidably assembled in the groove. An L-shaped support plate is fixedly assembled on one end of the carrier, and a sliding frame is slidably arranged on the L-shaped support plate.

[0010] The position adjustment assembly includes a position adjustment frame and a middle frame, wherein the position adjustment frame is slidably mounted on the sliding frame, and the middle frame is rotatably mounted on one side of the position adjustment frame;

[0011] The clamping arm assembly includes a cross frame, a slide and a first layer of plate. The cross frame is rotatably assembled on the middle frame. Two groups of slides are slidably arranged on one side of the cross frame. The first layer of plate is arranged at one end of the slide. The two groups of slides move in opposite directions.

[0012] As a further solution of the present invention, the carrier assembly also includes a bracket, a first driver, a driving gear, a guide rail, a bottom groove, an electric telescopic rod and a rod head. The bracket is fixedly assembled on the carrier, one end of the first driver is assembled in the bracket, and the other end of the first driver is equipped with a driving gear, and the driving gear is meshed and assembled on the outer gear ring. The guide rail is assembled on the L-shaped support plate, and a bottom groove is also provided at the bottom of the sliding frame. The bottom groove is limited and slidably assembled on the guide rail. The sliding frame is also fixedly assembled with an electric telescopic rod, and the rod head on one side of the electric telescopic rod is fixedly assembled on the L-shaped support plate.

[0013] As a further solution of the present invention, the positioning assembly also includes a guide column, a second drive, an axle frame, a third drive, a lateral drive wheel, a synchronous belt, a lateral transmission wheel and a positioning arm. The guide column is fixedly arranged on the sliding frame, and the positioning frame is slidably assembled on the guide column. One end of the lateral transmission wheel is fixedly assembled on the sliding frame, and the movable shaft at the other end of the lateral transmission wheel is assembled on the positioning frame. A shaft frame is also provided on the top of the positioning frame, and a lateral transmission wheel is assembled on the fixed shaft in the shaft frame. The third drive is fixedly arranged on one side of the shaft frame, and lateral drive wheels are assembled at both ends of the third drive. One end of the synchronous belt is connected to the lateral drive wheel for transmission, and the other end of the synchronous belt is connected to the lateral transmission wheel for transmission. One end of the positioning arm is fixedly connected to the lateral transmission wheel, and the other end of the positioning arm is fixedly connected to the middle frame.

[0014] As a further solution of the present invention, the positioning assembly also includes a first ring gear plate, a second ring gear plate and a central gear plate, the first ring gear plate is fixedly arranged on one side of the central frame, the second ring gear plate is rotatably assembled on one side of the central frame, the central gear plate fixed axis is arranged between the first ring gear plate and the second ring gear plate, and the central gear plate is respectively engaged with the first ring gear plate and the second ring gear plate.

[0015] As a further solution of the present invention, the clamping arm assembly also includes a reversing gear, a driven rack, a fourth driver, a fifth driver, a pressure block and a pressure frame. The reversing gear fixed axis is assembled on the cross frame, one end of the driven rack is fixedly assembled on the slide, and the other end of the driven rack is engaged with the reversing gear. The fourth driver is fixedly arranged on one side of the cross frame and is transmission-connected with the reversing gear. The fifth driver is fixedly arranged on one side of the cross frame and is transmission-connected with the second ring gear disk. Several of the pressure blocks are arrayed on the first layer of plate, and the pressure blocks are slidingly assembled in the first layer of plate. One side of several pressure blocks is also fixedly assembled with a pressure frame.

[0016] As a further solution of the present invention, the clamping arm assembly also includes a second layer plate, an air guide valve, an air pipe, a piston pressure rod, a main pipe and an inclined cone block. The second layer plate is fixedly arranged on one side of the first layer plate, and several air guide valves are fixedly assembled at one end of the second layer plate. One end of the air pipe is connected to the air guide valve, and a piston pressure rod is slidably inserted at the other end of the air pipe. The main pipe is connected to several air guide valves, one end of the inclined cone block is fixedly connected to the pressure frame, and the other end of the inclined cone block is elastically connected to the second layer plate.

[0017] As a further solution of the present invention, the pump housing production welding device also includes a pump air assembly, which includes a pump air cylinder, a piston push rod, a top support block, a main valve core and an external air pipe. The pump air cylinder is fixedly arranged on one side of the second layer plate, and a piston push rod is slidingly assembled in the pump air cylinder. One end of the piston push rod is fixedly assembled with a top support block, and the top support block is arranged toward the side of the oblique cone block. The pump air cylinder is also equipped with a main valve core, and the main valve core is connected to the main pipe. One side of the pump air cylinder is also connected to an external air pipe.

[0018] In summary, the embodiments of the present invention have the following beneficial effects compared with the prior art:

[0019] The present invention arranges a plurality of curved clamping modules in a circumferential direction on one side of the frame plate, so that the curved clamping modules can cyclically move between the clamping station and the docking station to achieve the positioning and seam alignment of the parts to be welded. At the same time, the curved clamping modules can be used to quickly clamp irregular pump casings, saving time in replacing customized fixtures and improving comprehensive welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of a welding device for producing a pump casing provided in one embodiment of the present invention.

[0021] Figure 2 It is a schematic structural diagram of a pump casing production welding device provided in one embodiment of the present invention.

[0022] Figure 3 for Figure 2 A schematic diagram of the structure of the figure.

[0023] Figure 4 for Figure 2 Schematic diagram of the structure marked with B in the figure.

[0024] Figure 5 This is a side structural schematic diagram of a pump casing production welding device provided in an embodiment of the present invention.

[0025] Figure 6 for Figure 5 Schematic diagram of the structure marked with C in the figure.

[0026] Figure numerals: 1-frame component, 101-frame plate, 102-groove, 103-external gear ring, 2-carrier assembly, 201-carrier, 202-limiting pin, 203-bracket, 204-first driver, 205-driving gear, 206-L-shaped support plate, 207-guide rail, 208-sliding frame, 209-bottom slot, 210-electric telescopic rod, 211-rod head, 3-positioning assembly, 301-positioning frame, 302-guide column, 303-second driver, 304-axis frame, 305-third driver, 306-lateral driving wheel, 307-synchronous belt, 308-lateral transmission wheel , 309-adjusting arm, 310-middle frame, 311-first ring gear, 4-clamping arm assembly, 401-cross frame, 402-slide plate, 403-reversing gear, 404-driven rack, 405-fourth drive, 406-first layer, 407-fifth drive, 408-pressure block, 409-pressure frame, 410-second layer, 411-air guide valve, 412-air pipe, 413-piston pressure rod, 414-main pipe, 415-oblique cone block, 5-pump air assembly, 501-pump air cylinder, 502-piston push rod, 503-top support block, 504-main valve core, 505-external air pipe. DETAILED DESCRIPTION

[0027] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] See also Figures 1-6, a pump casing production welding device in an embodiment of the present invention, the pump casing production welding device has a relative first direction x, a second direction y and a third direction z, the pump casing production welding device includes a frame component 1, the frame component 1 includes a frame plate 101, a groove 102 and an outer gear ring 103, the frame plate 101 is fixedly arranged on the ground end, and the outer diameter end of the frame plate 101 is provided with a groove 102 and an outer gear ring 103; the pump casing production welding device includes a plurality of curved clamping modules, and the plurality of curved clamping modules are slidably assembled on the frame plate 101 along the circumferential direction, the curved clamping module includes a carrier assembly 2, a positioning assembly 3 and a clamping arm assembly 4; the carrier assembly 2 includes a carrier 201, a limit pin 202, an L-shaped support plate 206 and a sliding frame 208, the carrier 201 is sleeved on the frame plate 101 On the inner diameter end of the carrier 201 is provided with a limit pin 202, and the limit pin 202 is slidingly assembled in the groove 102, and one end of the carrier 201 is fixedly equipped with an L-shaped support plate 206, and a sliding frame 208 is slidably arranged on the L-shaped support plate 206; the positioning assembly 3 includes a positioning frame 301 and a central frame 310, the positioning frame 301 is slidably assembled on the sliding frame 208, and the central frame 310 is rotatably assembled on one side of the positioning frame 301 along the xoz plane; the clamping arm assembly 4 includes a cross frame 401, a slide 402 and a first layer plate 406, the cross frame 401 is rotatably assembled on the central frame 310 along the yoz plane, two groups of slides 402 are slidably arranged on one side of the cross frame 401, and the first layer plate 406 is arranged at one end of the slide 402, and the two groups of slides 402 move in opposite directions.

[0029] When this embodiment is actually applied, during the actual operation of the pump casing production welding device, several curved clamping modules on one side of the frame plate 101 have a clamping station and a docking station in the circumferential direction, where the lowest point in the circumferential direction is set as the holding station, and the pump casing parts to be welded are placed on the ground end and positioned and clamped on any curved clamping module at the clamping station. When the curved clamping module has parts, several curved clamping modules rotate in the circumferential direction at the same time, so that the curved clamping modules that do not hold parts are rotated to the holding station for clamping, and the curved parts with irregular surfaces are stably clamped by the curved clamping modules. When several curved clamping modules all hold parts, by controlling the offset rotation of the parts in the curved clamping modules, several parts can be positioned and aligned at the docking station, and the welding action of the subsequent process can be performed, so that the curved parts with irregular outer surfaces can be aligned after stable clamping, saving the time of replacing the fixture.

[0030] See also Figure 3In a preferred embodiment of the present invention, the carrier assembly 2 further includes a bracket 203, a first driver 204, a driving gear 205, a guide rail 207, a bottom slot 209, an electric telescopic rod 210 and a rod head 211, wherein the bracket 203 is fixedly assembled on the carrier 201, one end of the first driver 204 is assembled in the bracket 203, and the other end of the first driver 204 is equipped with a driving gear 205, and the driving gear 205 is meshed and assembled on the outer gear ring 103, the guide rail 207 is assembled on the L-shaped support plate 206, and a bottom slot 209 is further provided at the bottom of the sliding frame 208, and the bottom slot 209 is limitedly slidably assembled on the guide rail 207, and the sliding frame 208 is also fixedly assembled with an electric telescopic rod 210, and the rod head 211 on one side of the electric telescopic rod 210 is fixedly assembled on the L-shaped support plate 206.

[0031] In actual application of this embodiment, the first driver 204 can drive the driving gear 205 to rotate in the driving state, so that the driving gear 205 drives the carrier 201 to move along the yoz plane during the process of meshing with the outer gear ring 103. The sliding frame 208 is assembled on the guide rail 207 through the bottom groove 209 to slide in the first direction x. The rod head 211 at one end of the electric telescopic rod 210 can drive the sliding frame 208 to move in the first direction x during the telescopic process, so that the curved clamping module has freedom in the first direction x.

[0032] See also Figure 3 and Figure 6 In a preferred embodiment of the present invention, the positioning assembly 3 further includes a guide column 302, a second driver 303, a shaft frame 304, a third driver 305, a lateral drive wheel 306, a synchronous belt 307, a lateral transmission wheel 308 and a positioning arm 309. The guide column 302 is fixedly mounted on the sliding frame 208, and the positioning frame 301 is slidably assembled on the guide column 302. One end of the lateral transmission wheel 308 is fixedly assembled on the sliding frame 208, and the movable shaft at the other end of the lateral transmission wheel 308 is assembled on the positioning frame 301. An axis frame 304 is also provided on the top of the positioning frame 301, and a lateral transmission wheel 308 is installed on the fixed axis in the axis frame 304. The third driver 305 is fixedly arranged on one side of the axis frame 304, and lateral driving wheels 306 are installed at both ends of the third driver 305. One end of the synchronous belt 307 is connected to the lateral driving wheel 306 for transmission, and the other end of the synchronous belt 307 is connected to the lateral transmission wheel 308 for transmission. One end of the positioning arm 309 is fixedly connected to the lateral transmission wheel 308, and the other end of the positioning arm 309 is fixedly connected to the central frame 310.

[0033] In actual application of this embodiment, the positioning frame 301 is slidably assembled on the guide column 302 along the third direction z, and the second driver 303 can drive the positioning frame 301 to move along the third direction z, so that the curved clamping module has freedom in the third direction z. At this time, the curved clamping module has any freedom of linear motion in the xoz plane. The fixed axis in the shaft frame 304 is equipped with a lateral transmission wheel 308, and the third driver 305 on one side of the shaft frame 304 is connected to the lateral transmission wheel 308 through the lateral driving wheel 306 and the synchronous belt 307, so that the third driver 305 can drive the positioning arm 309 to rotate in the driving state. The end of the positioning arm 309 is fixedly connected to the middle frame 310, thereby driving the middle frame 310 to rotate with the positioning arm 309 as the axis, so that the curved clamping module has the freedom of tilting in the xoz plane.

[0034] Furthermore, the positioning assembly 3 further includes a first ring gear disc 311, a second ring gear disc 312 and a central gear disc 313. The first ring gear disc 311 is fixedly arranged on one side of the central frame 310, and the second ring gear disc 312 is rotatably assembled along the yoz plane on one side of the central frame 310. The central gear disc 313 is fixedly arranged between the first ring gear disc 311 and the second ring gear disc 312, and the central gear disc 313 is engaged with the first ring gear disc 311 and the second ring gear disc 312 respectively. The first ring gear disc 311 is fixedly mounted on one side of the middle frame 310, the second ring gear disc 312 is rotatably sleeved on one side of the middle frame 310, the middle gear disc 313 is fixedly mounted on one side of the middle frame 310, and the first ring gear disc 311 and the second ring gear disc 312 are both engaged with the middle gear disc 313, so that the second ring gear disc 312 drives the cross frame 401 to rotate around the axis during the rotation process, thereby realizing the rotational freedom of the curved clamping module in the yoz plane.

[0035] See also Figure 4 In a preferred embodiment of the present invention, the clamping arm assembly 4 also includes a reversing gear 403, a driven rack 404, a fourth driver 405, a fifth driver 407, a pressure block 408 and a pressure frame 409. The reversing gear 403 is fixedly assembled on the cross frame 401, one end of the driven rack 404 is fixedly assembled on the slide 402, and the other end of the driven rack 404 is meshed with the reversing gear 403. The fourth driver 405 is fixedly arranged on one side of the cross frame 401 and is transmission-connected with the reversing gear 403. The fifth driver 407 is fixedly arranged on one side of the cross frame 401 and is transmission-connected with the second ring gear disk 312. Several of the pressure blocks 408 are arranged in an array on the first layer 406, and the pressure blocks 408 are slidably assembled in the first layer 406. One side of several pressure blocks 408 is also fixedly assembled with a pressure frame 409.

[0036] In actual application of this embodiment, the reversing gear 403 is fixedly arranged on the cross frame 401. When the fourth driver 405 drives the reversing gear 403 to rotate in the driving state, since the driven rack 404 is fixedly assembled on one side of the slide 402, and the two sets of driven racks 404 are engaged with the reversing gear 403, the reversing gear 403 drives the two sets of driven racks 404 and the slide 402 to move in the third direction z during the rotation process, thereby adjusting the two sets of first layer plates 402. 06, so that the two groups of first layers 406 can be switched between an open state and a locked state. When the two groups of first layers 406 are in an open state and the curved clamping module is on the clamping station side, the opened first layers 406 can clamp the pump casing parts to be welded, so that the pump casing parts can complete the initial clamping at the clamping station. At this time, part of the pressure block 408 on the first layer 406 is in contact with the irregular surface of the pump casing part, and the pump casing part is in a non-clamped state.

[0037] See also Figure 4 In a preferred embodiment of the present invention, the clamping arm assembly 4 also includes a second layer plate 410, an air guide valve 411, an air pipe 412, a piston pressure rod 413, a main pipe 414 and an inclined cone block 415. The second layer plate 410 is fixedly arranged on one side of the first layer plate 406, and several air guide valves 411 are fixedly assembled at one end of the second layer plate 410. One end of the air pipe 412 is connected to the air guide valve 411, and the other end of the air pipe 412 is slidably inserted with a piston pressure rod 413. The main pipe 414 is connected to several air guide valves 411. One end of the inclined cone block 415 is fixedly connected to the pressure frame 409, and the other end of the inclined cone block 415 is elastically connected to the second layer plate 410.

[0038] In actual application of this embodiment, the several air guide valves 411 provided on the second layer plate 410 are respectively connected to the several air pipes 412, and the end of the air pipe 412 is equipped with a piston rod 413. When the several pressure blocks 408 on the two groups of first layer plates 406 are in a non-clamped state, air is pumped into one side of the main pipe 414 to make the piston rods 413 in the several air pipes 412 extend under the action of gas pressure and abut against the irregular surface of the pump housing. Since the several air pipes 412 are pumped with the same air source, the several piston rods 413 can be ensured to abut against the outer surface of the part at the same time under the action of gas pressure until the gas pressure on one side of the main pipe 414 reaches a preset value, at which time the pump housing part is in a fully clamped state.

[0039] See also Figure 4In a preferred embodiment of the present invention, the pump housing production welding device also includes a pump air component 5, which includes a pump air cylinder 501, a piston push rod 502, a support block 503, a main valve core 504 and an external air pipe 505. The pump air cylinder 501 is fixedly arranged on one side of the second layer plate 410, and a piston push rod 502 is slidingly assembled in the pump air cylinder 501. One end of the piston push rod 502 is fixedly assembled with a support block 503, and the support block 503 is arranged toward the side of the oblique cone block 415. The pump air cylinder 501 is also equipped with a main valve core 504, and the main valve core 504 is connected to the main pipe 414. One side of the pump air cylinder 501 is also connected to the external air pipe 505.

[0040] When this embodiment is actually used, the external air pipe 505 connected to the end of the pump cylinder 501 is used to connect an external air source. The air source structure is not specifically limited here, and the external air pipe 505 causes the piston inside the pump cylinder 501 to drive the piston push rod 502 to move during the pumping process. While the piston push rod 502 drives the support block 503 on one side to move, the air inside the pump cylinder 501 is pumped into the main pipe 414 through the main valve core 504, and when the support block 503 abuts against the inclined surface on one side of the inclined cone block 415, it can push the inclined cone block 415 to move in the positive direction of the third direction z, so that the inclined cone block 415 pulls the pressure frame 409 and several pressure blocks 408 to move synchronously, thereby causing several pressure blocks 408 to be hidden and retracted between the first layer 406 and the second layer 410.

[0041] The above embodiment of the present invention provides a pump casing production welding device, by arranging a plurality of curved clamping modules in a circumferential direction on one side of the frame plate 101, the curved clamping module can be circulated between the clamping station and the docking station to achieve the positioning and alignment of the parts to be welded. At the same time, the curved clamping module can be used to quickly clamp irregular pump casings, saving time in replacing customized fixtures and improving overall welding efficiency.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pump casing production welding device, characterized in that: The pump casing production welding device comprises: A frame component, comprising a frame plate, a groove and an outer gear ring, wherein the frame plate is fixedly arranged on the ground end, and the outer diameter end of the frame plate is provided with a groove and an outer gear ring; The pump housing production welding device includes a plurality of curved clamping modules, which are slidably assembled on the frame plate along the circumferential direction. The curved clamping modules include a carrier assembly, a positioning assembly and a clamping arm assembly. The carrier assembly includes a carrier, a limit pin, an L-shaped support plate and a sliding frame. The carrier is sleeved on the frame plate, and a limit pin is provided on the inner diameter end of the carrier. The limit pin is limitedly slidably assembled in the groove. An L-shaped support plate is fixedly assembled on one end of the carrier, and a sliding frame is slidably arranged on the L-shaped support plate. The position adjustment assembly includes a position adjustment frame and a middle frame, wherein the position adjustment frame is slidably mounted on the sliding frame, and the middle frame is rotatably mounted on one side of the position adjustment frame; The clamping arm assembly includes a cross frame, a slide plate and a first layer plate. The cross frame is rotatably mounted on the middle frame. Two sets of slide plates are slidably arranged on one side of the cross frame. The first layer plate is arranged on one end of the slide plate. The two sets of slide plates move in opposite directions. The clamping arm assembly also includes a reversing gear, a driven rack, a fourth driver, a fifth driver, a pressure block and a pressure frame, the reversing gear fixed axis is assembled on the cross frame, one end of the driven rack is fixedly assembled on the slide, the other end of the driven rack is meshed with the reversing gear, the fourth driver is fixedly arranged on one side of the cross frame and is in transmission connection with the reversing gear, the fifth driver is fixedly arranged on one side of the cross frame and is in transmission connection with the second ring gear disk, several of the pressure blocks are arranged on the first layer plate, and the pressure blocks are slidably assembled in the first layer plate, and one side of several pressure blocks is also fixedly assembled with a pressure frame; The clamping arm assembly also includes a second layer plate, an air guide valve, an air pipe, a piston pressure rod, a main pipe and an inclined cone block. The second layer plate is fixedly arranged on one side of the first layer plate, and several air guide valves are fixedly assembled on one end of the second layer plate. One end of the air pipe is connected to the air guide valve, and a piston pressure rod is slidably inserted into the other end of the air pipe. The main pipe is connected to several air guide valves. One end of the inclined cone block is fixedly connected to the pressure frame, and the other end of the inclined cone block is elastically connected to the second layer plate.

2. A pump casing production welding device according to claim 1, characterized in that: The carrier assembly also includes a bracket, a first driver, a driving gear, a guide rail, a bottom slot, an electric telescopic rod and a rod head. The bracket is fixedly assembled on the carrier, one end of the first driver is assembled in the bracket, and the other end of the first driver is equipped with a driving gear, and the driving gear is meshed and assembled on the outer gear ring. The guide rail is assembled on the L-shaped support plate, and a bottom slot is also provided at the bottom of the sliding frame. The bottom slot is limited and slidably assembled on the guide rail. The sliding frame is also fixedly assembled with an electric telescopic rod, and the rod head on one side of the electric telescopic rod is fixedly assembled on the L-shaped support plate.

3. A pump casing production welding device according to claim 1, characterized in that: The positioning assembly also includes a guide column, a second drive, an axle frame, a third drive, a lateral drive wheel, a synchronous belt, a lateral transmission wheel and a positioning arm. The guide column is fixedly arranged on the sliding frame, and the positioning frame is slidably assembled on the guide column. One end of the lateral transmission wheel is fixedly assembled on the sliding frame, and the movable shaft at the other end of the lateral transmission wheel is assembled on the positioning frame. A shaft frame is also provided on the top of the positioning frame, and a lateral transmission wheel is assembled on the fixed shaft in the shaft frame. The third drive is fixedly arranged on one side of the shaft frame, and lateral drive wheels are assembled at both ends of the third drive. One end of the synchronous belt is connected to the lateral drive wheel for transmission, and the other end of the synchronous belt is connected to the lateral transmission wheel for transmission. One end of the positioning arm is fixedly connected to the lateral transmission wheel, and the other end of the positioning arm is fixedly connected to the middle frame.

4. A pump casing production welding device according to claim 1, characterized in that: The positioning assembly also includes a first ring gear plate, a second ring gear plate and a central gear plate. The first ring gear plate is fixedly arranged on one side of the central frame, the second ring gear plate is rotatably assembled on one side of the central frame, the central gear plate fixed axis is arranged between the first ring gear plate and the second ring gear plate, and the central gear plate is respectively engaged with the first ring gear plate and the second ring gear plate.

5. A pump casing production welding device according to claim 1, characterized in that: The pump housing production welding device also includes a pump air assembly, which includes a pump air cylinder, a piston push rod, a top support block, a main valve core and an external air pipe. The pump air cylinder is fixedly arranged on one side of the second layer plate, and a piston push rod is slidingly assembled in the pump air cylinder. One end of the piston push rod is fixedly assembled with a top support block, and the top support block is arranged toward the side of the oblique cone block. The pump air cylinder is also equipped with a main valve core, and the main valve core is connected to the main pipe. One side of the pump air cylinder is also connected to an external air pipe.

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