Shell welding machining equipment for double-screw pump production

Abstract

The invention provides shell welding machining equipment for double-screw pump production, and relates to the technical field of welding equipment.The shell welding machining equipment comprises a mounting mechanism, a connecting rack drives a moving rod to move upwards, after the moving rod moves upwards to the uppermost end, a sliding rod drives a movable block to stretch out of the front side of a main body, and a screw in the connecting rack is rotationally connected; the height of the movable rod is adjusted, so that the entry point of welding equipment is just located on one side of the double-screw pump shell, positioning of the movable rod can be completed, and when the same batch of double-screw pump shells are welded next time, the maximum height of the movable rod driven by the connecting rack to ascend is the height of the entry point of butt joint of the last time. In this way, the penetration point can be quickly found during several times of welding in the future, and the problems that for traditional welding machining equipment, the positioning and feeding structure of a welding device is incomplete, the welding penetration point needs to be found again when double-screw pump shells of the same batch are welded each time, the whole welding process is too tedious, and the welding efficiency is high are solved. And the processing time is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of welding equipment, and particularly relates to a welding and processing equipment for the production of the outer shell of a twin-screw pump. Background Art

[0002] During the production of a twin-screw pump, the semi-finished outer shells need to be welded together by welding equipment to form a complete outer shell of the twin-screw pump. However, for the current traditional welding and processing equipment, the structure of the positioning and feeding of its welding device is imperfect. When welding the outer shells of the same batch of twin-screw pumps each time, it is necessary to re-find the welding starting point, which makes the entire welding process too cumbersome, prolongs the processing time, and the structure of the existing welding and processing equipment for controlling the distance between the welding device and the workpiece is imperfect. When in use, the outer shell of the twin-screw pump is not flat, which makes it difficult to master the distance between the welding device and the workpiece during the feeding process, resulting in poor quality of the processed outer shell of the twin-screw pump. Summary of the Invention

[0003] In view of this, the present invention provides a welding and processing equipment for the production of the outer shell of a twin-screw pump, which has a moving part. By adjusting the height of the moving rod, after the semi-finished outer shell of the twin-screw pump is placed, the welding equipment can be quickly moved to the processing starting point, which can effectively reduce the processing time and improve the processing efficiency.

[0004] The present invention provides a welding and processing equipment for the production of the outer shell of a twin-screw pump, which specifically includes: An installation mechanism; a receiving component is provided on the installation mechanism, and the lifting plate of the receiving component is arranged on the front side of the main body in the installation mechanism. The ear plate on the rear side of the lifting plate is slidably installed on the guide rod in the chute of the installation mechanism, and the rack on the lifting plate is engaged with the connecting gear in the installation mechanism. Moreover, the wedge-shaped structure on the positioning rod in the receiving component is inserted into the positioning groove in the installation mechanism; a moving part is provided on the installation mechanism, and the moving rod of the moving part is arranged at the rear end of the main body. The ear plate on the front side of the moving rod is slidably installed on the guide rod in the chute, and the connecting rack of the moving part is in transmission connection with the connecting gear. The moving part includes a sliding rod and a movable block. The sliding rod is slidably installed at the upper end of the slider in the moving part, and a rack is provided at the inner end of the bottom of the sliding rod. Moreover, the rack at the inner end of the bottom of the sliding rod is engaged with the gear on the rotating part in the moving part. The movable block is slidably installed on the front side of the sliding rod through an elastic member, and two groups of guide wheels are rotatably installed at the bottom of the front side of the movable block. Moreover, a welding spray component is provided at the upper end of the front side of the movable block.

[0005] Optionally, the installation mechanism includes: a main body, a rectangular groove is opened in the middle of the main body, and circular holes are provided at the four corners of the main body; positioning grooves are arranged in equal columns at both ends of the front side of the main body.

[0006] Optionally, the mounting mechanism further includes: mounting rods, there are two groups of mounting rods in total, and the mounting rods are symmetrically arranged on both sides of the main body; connecting gears, the connecting gears are rotatably mounted on the mounting rods.

[0007] Optionally, the mounting mechanism further includes: sliding grooves, there are two groups of sliding grooves in total, and the sliding grooves are opened at the inner ends of both sides of the main body, the sliding grooves penetrate through the rear ends of both ends of the main body, and two guiding rods are arranged in the sliding grooves, and an elastic member is sleeved on the front guiding rod; a support frame, the support frame is inserted at the bottom of the main body, and the upper end of the support frame is inserted into the round holes at the four corners of the main body.

[0008] Optionally, the receiving assembly includes: a lifting plate, two ear plates are symmetrically arranged at the rear end of the lifting plate, and racks are symmetrically arranged on both sides of the lifting plate; mounting grooves, there are three groups of mounting grooves in total, and the mounting grooves are arranged in columns at the inner end of the lifting plate, and the mounting grooves penetrate through the upper and lower ends of the lifting plate.

[0009] Optionally, the receiving assembly further includes: inner grooves, there are two groups of inner grooves in total, and the inner grooves are located at both inner ends of the lifting plate, and the inner grooves penetrate through the front and rear ends of the lifting plate, and the inner grooves are located between the three mounting grooves; positioning rods, the positioning rods are slidably mounted in the inner grooves through elastic members, and the positioning rods penetrate through the inner grooves, and a wedge-shaped structure is arranged at the rear side of the positioning rods.

[0010] Optionally, the receiving assembly further includes: a receiving plate, the receiving plate is rotatably mounted in the mounting groove, and two pull rods are arranged at the bottom of the receiving plate, and two rectangular grooves are symmetrically arranged at the upper end inside the receiving plate; clamping blocks, the clamping blocks are slidably mounted in the rectangular grooves at the upper end inside the receiving plate.

[0011] Optionally, the receiving assembly further includes: an adjusting member, the adjusting member is rotatably mounted at the bottom of the receiving plate, and a bevel gear is arranged at the upper end of the adjusting member, and the adjusting member penetrates through the receiving plate and is provided with a knob; control screws, there are two groups of control screws in total, and the control screws are rotatably mounted in the two rectangular grooves inside the receiving plate, the control screws are threadedly connected with the clamping blocks, and a bevel gear is arranged inside the adjusting member, and the bevel gear on the adjusting member is meshed with the bevel gear on the adjusting member.

[0012] Optionally, the moving part further includes: a moving rod, a rectangular through groove is arranged inside the moving rod, and a screw rod connecting a motor is rotatably mounted in the rectangular through groove; connecting racks, the connecting racks are arranged on both sides of the moving rod, and a screw rod is rotatably mounted in the connecting racks, and the screw rod is threadedly connected with the moving rod.

[0013] Optionally, the moving part further includes: a slider slidably mounted on the moving rod, and the slider is threadedly connected to the screw in the moving rod. A T-shaped groove is provided at the upper end of the slider, and a worm connected to the motor is rotatably mounted at the rear end of the slider; a rotating member rotatably mounted at the rear end of the slider, and the rotating member is composed of a set of gears and two sets of worm wheels. The gear is located between the two sets of worm wheels, and the worm wheels on both sides of the rotating member are in transmission connection with the worm at the rear side of the slider.

[0014] Beneficial effects According to the welding processing equipment of the embodiments of the present invention, compared with the traditional processing equipment, it is provided with a moving part, which can quickly position the welding equipment to the welding cut-in point after each installation of the semi-finished double-screw pump housing, avoiding the problem of having to re-find the welding cut-in point each time welding is performed. And a sliding rod is provided, which can fit the surface of the double-screw pump housing during processing, so that the welding equipment moves along the outer contour of the double-screw pump during processing, solving the problem of being unable to master the distance between the welding device and the workpiece.

[0015] In the present invention, a receiving component and a moving part are provided. Rectangular sliding grooves are opened at both ends inside the main body, and two sets of guide rods are arranged in the sliding grooves. An elastic member is sleeved on the front guide rod. A lifting plate is arranged on the front side of the main body, and the ear plate at the rear end of the lifting plate is slidably mounted on the front guide rod in the sliding groove. Four sets of mounting rods are arranged at both ends of the main body, and a connecting gear is rotatably mounted on the mounting rods. Rack teeth are arranged on both sides of the lifting plate, and the rack teeth are in transmission connection with the connecting gear. An inner groove is opened inside the lifting plate, and a positioning rod is slidably mounted in the inner groove through the elastic member, and the positioning rod is pushed by the elastic member and inserted into the positioning groove. A moving rod is arranged at the rear end of the main body, and the ear plate at the front side of the moving rod is slidably mounted in the guide rod in the sliding groove. Connecting rack teeth with screws are arranged on both sides of the moving rod, and the moving rod is threadedly connected to the screws on the connecting rack teeth. When in use, the double-screw pump housing is installed on the lifting plate, the lifting plate is pressed down to a certain depth, and the positioning rod is inserted into the positioning groove at the corresponding position of the main body to fix the lifting plate at the front side of the main body. By engaging the rack teeth on both sides of the lifting plate and the connecting rack teeth with the connecting teeth, when the lifting plate descends, the connecting rack teeth drive the moving rod to move upward. After moving to the uppermost end, the sliding rod drives the movable block to extend from the front side of the main body. Rotate the screw in the connecting rack teeth to adjust the height of the moving rod so that the cut-in point of the welding equipment is exactly on one side of the double-screw pump housing, so that the positioning of the moving rod can be completed. When welding the double-screw pump housing of the same batch next time, the maximum height at which the connecting rack teeth drive the moving rod to rise is the height of the docking cut-in point last time, so that the cut-in point can be quickly found during several future weldings.

[0016] In the present invention, a moving part is provided. A screw rod connected to a motor is arranged inside a moving rod. A slider is slidably mounted on the moving rod, and the slider is threadedly connected to the screw rod inside the moving rod. A worm gear connected to a servo motor is arranged at the rear side of the slider. A rotating part is rotatably mounted at the rear end of the slider, and worm wheels on both sides of the rotating part are in transmission connection with the worm gear connected to the motor. A sliding rod is slidably mounted on the upper end of the slider, and a rack at the bottom of the sliding rod is meshed with a gear on the rotating part. A movable block is slidably mounted on the front side of the sliding rod through an elastic member, and two guide wheels are arranged at the bottom of the front side of the movable block. A welding and spraying device is mounted at the front end of the movable block, and the distance between the nozzle and the bottom of the guide wheels is reasonably adjusted. During use, by rotating the rotating part, the sliding rod drives the movable block to extend from the front side of the main body. The screw rod inside the connecting rack is rotated to adjust the height of the moving rod, so that the bottom of the guide wheel on the front side of the movable block fits onto the outer shell of the twin-screw pump. During the welding process, the slider drives the sliding rod to move on the moving rod. By making the guide wheels fit and move on the surface of the outer shell of the twin-screw pump, a certain distance is always maintained between the welding device and the pump outer shell during processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0018] The drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0019] In the drawings: Figure 1 A three-dimensional structural schematic diagram according to an embodiment of the present invention is shown; Figure 2 A rear-view structural schematic diagram according to an embodiment of the present invention is shown; Figure 3 An exploded structural schematic diagram according to an embodiment of the present invention is shown; Figure 4 A partial connection structural schematic diagram according to an embodiment of the present invention is shown; Figure 5 A three-dimensional structural schematic diagram of an installation mechanism according to an embodiment of the present invention is shown; Figure 6 An exploded structural schematic diagram of a receiving component according to an embodiment of the present invention is shown; Figure 7 A partial cross-sectional structural schematic diagram of a receiving component according to an embodiment of the present invention is shown; Figure 8 A three-dimensional structural schematic diagram of a moving part according to an embodiment of the present invention is shown; Figure 9 An exploded structural schematic diagram of a moving part according to an embodiment of the present invention is shown; Figure 10Shows a schematic diagram of the local structure of the moving part according to an embodiment of the present invention.

[0020] List of reference numerals: 1. Installation mechanism; 101. Main body; 1011. Positioning groove; 102. Installation rod; 1021. Connecting gear; 103. Slide groove; 104. Support frame; 2. Receiving assembly; 201. Lifting plate; 2011. Installation groove; 202. Inner groove; 2021. Positioning rod; 203. Receiving plate; 2031. Clamping block; 204. Adjusting member; 205. Control screw; 3. Moving part; 301. Moving rod; 3011. Connecting rack; 302. Slide block; 3021. Rotating member; 303. Sliding rod; 3031. Movable block. Detailed implementation manners

[0021] In order to make the objectives, solutions, and advantages of the technical solutions of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments of the present invention. Unless otherwise specified, the terms used herein have the ordinary meanings in the art. The same reference numerals in the drawings represent the same components.

[0022] Embodiment: Please refer to Figures 1 to 10 : The present invention provides a welding processing device for the outer shell used in the production of twin-screw pumps, including: a mounting mechanism 1; a receiving component 2 is provided on the mounting mechanism 1, and the lifting plate 201 of the receiving component 2 is arranged on the front side of the main body 101 in the mounting mechanism 1. The ear plates on the rear side of the lifting plate 201 are slidably mounted on the guide rods in the sliding grooves 103 of the mounting mechanism 1, and the rack on the lifting plate 201 meshes with the connecting gear 1021 in the mounting mechanism 1. Moreover, the wedge-shaped structure on the positioning rod 2021 in the receiving component 2 is inserted into the positioning groove 1011 in the mounting mechanism 1; a moving part 3 is provided on the mounting mechanism 1, and the moving rod 301 of the moving part 3 is arranged at the rear end of the main body 101. The ear plates on the front side of the moving rod 301 are slidably mounted on the guide rods in the sliding grooves 103, and the connecting rack 3011 of the moving part 3 is in transmission connection with the connecting gear 1021. The moving part 3 includes a sliding rod 303 and a movable block 3031. The sliding rod 303 is slidably mounted on the upper end of the slider 302 in the moving part 3, and a rack is provided at the inner end of the bottom of the sliding rod 303. Moreover, the rack at the inner end of the bottom of the sliding rod 303 engages with the gear on the rotating part 3021 in the moving part 3. The movable block 3031 is slidably mounted on the front side of the sliding rod 303 through an elastic member, and two groups of guide wheels are rotatably mounted at the bottom of the front side of the movable block 3031. In addition, an electric welding spraying component is provided at the upper end of the front side of the movable block 3031.

[0023] In addition, according to an embodiment of the present invention, as Figure 5As shown in the figure, the installation mechanism 1 includes: a main body 101, in which a rectangular groove is formed in the middle, and circular holes are provided at the four corners of the main body 101; positioning grooves 1011, which are arranged in equal columns at both ends of the front side of the main body 101; a rectangular main body 101, on which the receiving and connecting component 2 and the moving part 3 can be installed. By inserting the wedge-shaped structure at the rear end of the positioning rod 2021 into the positioning groove 1011, the positioning rod 2021 can limit the lifting plate 201. There are two groups of mounting rods 102, and the mounting rods 102 are symmetrically arranged on both sides of the main body 101; connecting gears 1021 are rotatably installed on the mounting rods 102. By setting the circular mounting rods 102, the connecting gears 1021 can be rotatably installed on the main body 101 through the mounting rods 102. By setting the connecting gears 1021 and engaging the connecting gears 1021 with the connecting rack 3011 and the racks on both sides of the lifting plate 201 respectively, when the lifting plate 201 moves, the connecting rack 3011 can be driven to move in the opposite direction by the connecting gears 1021. There are two groups of chutes 103, and the chutes 103 are opened at the inner ends of both sides of the main body 101. The chutes 103 penetrate through the rear ends of both ends of the main body 101, and two guide rods are provided in the chutes 103. An elastic member is sleeved on the front guide rod; a support frame 104 is inserted at the bottom of the main body 101, and the upper end of the support frame 104 is inserted into the circular holes at the four corners of the main body 101. By setting the rectangular chute 103 and slidingly connecting the lifting plate 201 and the moving rod 301 to the guide rods in the chute 103, the lifting plate 201 and the moving rod 301 can be slidably installed on the main body 101 through the chute 103. By setting the support frame 104, it can be used to actually support the main body 101.

[0024] In addition, according to an embodiment of the present invention, as Figures 6 - 7As shown in the figure, the receiving component 2 includes: a lifting plate 201, with two groups of ear plates symmetrically arranged at the rear end of the lifting plate 201, and racks symmetrically arranged on both sides of the lifting plate 201; mounting grooves 2011, with a total of three mounting grooves 2011, and the mounting grooves 2011 are arranged in columns at the inner end of the lifting plate 201, and the mounting grooves 2011 penetrate through the upper and lower ends of the lifting plate 201; a rectangular lifting plate 201 is provided, and by moving the lifting plate 201, three receiving plates 203 can be driven to move. A circular mounting groove 2011 is provided, and the receiving plate 203 can be movably mounted on the lifting plate 201 through the mounting groove 2011. Inner grooves 202, with a total of two inner grooves 202, and the inner grooves 202 are located at both inner ends of the lifting plate 201, and the inner grooves 202 penetrate through the front and rear ends of the lifting plate 201. The inner grooves 202 are located between the three mounting grooves 2011; positioning rods 2021, the positioning rods 2021 are slidably mounted in the inner grooves 202 through elastic members, and the positioning rods 2021 penetrate through the inner grooves 202, and a wedge-shaped structure is provided at the rear side of the positioning rods 2021; a rectangular inner groove 202 is provided, and the positioning rods 2021 can be movably mounted on the lifting plate 201 through the inner grooves 202. A rectangular positioning rod 2021 is provided. By inserting the wedge-shaped structure at the rear end of the positioning rod 2021 into the positioning groove 1011, the lifting plate 201 can be fixed on the main body 101. Receiving plates 203, the receiving plates 203 are rotatably mounted in the mounting grooves 2011, and two pull rods are provided at the bottom of the receiving plates 203, and two rectangular grooves are symmetrically provided at the upper end inside the receiving plates 203; clamping blocks 2031, the clamping blocks 2031 are slidably mounted in the rectangular grooves at the upper end inside the receiving plates 203; a circular receiving plate 203 is provided, and the outer casings of the double screw pumps to be processed can be placed on the receiving plate 203 for holding. A Z-shaped clamping block 2031 is provided, and by moving the clamping blocks 2031, two semi-finished outer casings of the double screw pumps can be clamped. Adjusting members 204, the adjusting members 204 are rotatably mounted at the bottom of the receiving plates 203, and a bevel gear is provided at the upper end of the adjusting members 204, and the adjusting members 204 penetrate through the receiving plates 203 and are provided with knobs; control screws 205, with a total of two control screws 205, and the control screws 205 are rotatably mounted in the two rectangular grooves inside the receiving plates 203. The control screws 205 are threadedly connected to the clamping blocks 2031, and a bevel gear is provided inside the adjusting members 204. The bevel gear on the adjusting member 204 meshes with the bevel gear on the adjusting member 204. By providing the adjusting members 204 and the control screws 205 and meshing the bevel gears on the adjusting members 204 and the control screws 205, the two control screws 205 can be rotated by rotating the adjusting members 204, and the movement of the clamping blocks 2031 can be controlled.

[0025] In addition, according to an embodiment of the present invention, as Figures 8 - 10As shown in the figure, the moving part 3 further includes: a moving rod 301, inside which there is a rectangular through groove, and a set of screws connecting the motor are rotatably installed in the rectangular through groove; a connecting rack 3011, which is arranged on both sides of the moving rod 301, and a screw is rotatably installed in the connecting rack 3011, and the screw is threadedly connected to the moving rod 301; a rectangular moving rod 301 is provided. By sliding the moving rod 301 on the main body 101, the moving rod 301 can drive the entire moving part 3 to adjust its position. The connecting rack 3011 is provided. By threadedly connecting the screw on the moving rod 301 and the connecting rack 3011, when the connecting rack 3011 moves, the moving rod 301 can be driven to move. A slider 302 is slidably installed on the moving rod 301, and the slider 302 is threadedly connected to the screw inside the moving rod 301. A T-shaped groove is provided at the upper end of the slider 302, and a worm connecting the motor is rotatably installed at the rear end of the slider 302; a rotating part 3021 is rotatably installed at the rear end of the slider 302, and the rotating part 3021 is composed of a set of gears and two sets of worm wheels. The gear is located between the two sets of worm wheels, and the worm wheels on both sides of the rotating part 3021 are in transmission connection with the worm at the rear side of the slider 302. The slider 302 is provided, and the sliding rod 303 can be movably installed on the moving rod 301 through the slider 302. The rotating part 3021 is provided. By meshing the gear at the middle position of the rotating part 3021 with the rack at the bottom of the sliding rod 303, when the rotating part 3021 rotates, the sliding rod 303 can be controlled to move on the slider 302.

[0026] The specific usage method and function of this embodiment: In the present invention, as Figure 10As shown in the figure, rectangular sliding grooves 103 with guide rods are opened at both ends inside the main body 101. The lifting plate 201 is installed on the front side of the main body 101, and the ear plates at the rear end of the lifting plate 201 are slidably installed on the guide rods in the sliding grooves 103. Four sets of connecting gears 1021 are rotatably installed on the main body 101 through the mounting rods 102. The racks on both sides of the lifting plate 201 are in transmission connection with the connecting gears 1021. An inner groove 202 is opened inside the lifting plate 201, and a positioning rod 2021 is installed on the inner groove 202 through an elastic member. The wedge-shaped structure at the rear end of the positioning rod 2021 is inserted into the positioning groove 1011. The receiving plate 203 is installed in the installation groove 2011 inside the lifting plate 201. The semi-finished double-screw pump housing is placed on the receiving plate 203 and fixed by the clamping blocks 2031. The moving rod 301 is arranged at the rear end of the main body 101, and the front side of the moving rod 301 is slidably installed on the sliding groove 103. Connecting racks 3011 with screws are arranged on both sides of the moving rod 301, and the screws on the moving rod 301 are in threaded connection with the screws on the connecting racks 3011. Press down the double-screw pump housing to make the lifting plate 201 descend to a certain depth. Insert the positioning rod 2021 into the positioning groove 1011 at the corresponding position of the main body 101 to fix the lifting plate 201 on the front side of the main body 101. When the lifting plate 201 descends, the connecting rack 3011 drives the moving rod 301 to move upward through the transmission of the connecting gear 1021. The slider 302 is slidably installed on the moving rod 301, and the slider 302 is in threaded connection with the screw inside the moving rod 301. A worm connected to a servo motor is arranged at the rear side of the slider 302. The rotating member 3021 is rotatably installed at the rear end of the slider 302. The worm wheels on both sides of the rotating member 3021 are in transmission connection with the worm of the connecting motor. The sliding rod 303 is slidably installed at the upper end of the slider 302, and the rack at the bottom of the sliding rod 303 is meshed with the gear on the rotating member 3021. The movable block 3031 is slidably installed on the front side of the sliding rod 303 through an elastic member, and two guide wheels are arranged at the bottom of the front side of the movable block 3031. The welding and spraying equipment is installed at the front end of the movable block 3031. Adjust the distance between the nozzle and the bottom of the guide wheel. Rotate the rotating member 3021 to make the sliding rod 303 drive the movable block 3031 to extend from the front side of the main body 101. Rotate the screw inside the connecting rack 3011 to adjust the height of the moving rod 301 so that the bottom of the guide wheel on the front side of the movable block 3031 fits onto the double-screw pump housing. Start the motor on the moving rod 301 to make the slider 302 drive the welding and spraying equipment to move on the moving rod 301 and perform linear welding on the workpiece.

[0027] Finally, it should be noted that when describing the positions of various components and their cooperation relationships, etc., usually one / a pair of components are taken as examples. However, those skilled in the art should understand that such positions, cooperation relationships, etc. are equally applicable to other components / other pairs of components.

[0028] The above description is only an exemplary embodiment of the present invention and is not intended to limit the scope of protection of the present invention. The scope of protection of the present invention is determined by the appended claims.

Claims

1. A casing welding processing equipment for twin-screw pump production, characterized in that: include: The mounting mechanism (1) is provided with a receiving assembly (2), and a lifting plate (201) of the receiving assembly (2) is arranged at the front side of a main body (101) in the mounting mechanism (1), and an ear plate at the rear side of the lifting plate (201) is slidably mounted on a guide rod in a slide groove (103) in the mounting mechanism (1), and a rack on the lifting plate (201) is meshed with a connecting gear (1021) in the mounting mechanism (1), and a wedge-shaped structure on a positioning rod (2021) in the receiving assembly (2) is inserted into a positioning groove (1011) in the mounting mechanism (1); the mounting mechanism (1) is provided with a moving part (3), and a moving rod (301) of the moving part (3) is arranged at the rear end of the main body (101), and an ear plate at the front side of the moving rod (301) is slidably mounted on a guide rod in a slide groove (103) in the mounting mechanism (1). The movable part (3) is mounted on a guide rod in a slide groove (103), and a connecting rack (3011) of the movable part (3) is transmission-connected to a connecting gear (1021). The movable part (3) comprises a sliding rod (303) and a movable block (3031). The sliding rod (303) is slidably mounted on the upper end of a slider (302) in the movable part (3), and a rack is provided at the inner end of the bottom of the sliding rod (303), and the rack at the inner end of the bottom of the sliding rod (303) is engaged with a gear on a rotating part (3021) in the movable part (3). The movable block (3031) is slidably mounted on the front side of the sliding rod (303) via an elastic member, and two sets of guide wheels are rotatably mounted at the bottom of the front side of the movable block (3031), and an electric welding spray assembly is provided at the upper end of the front side of the movable block (3031).

2. The housing welding processing equipment for twin-screw pump production as claimed in claim 1, characterized in that: The mounting mechanism (1) comprises: a main body (101), a rectangular groove is provided in the middle of the main body (101), and circular holes are provided at the four corners of the main body (101); and positioning grooves (1011), the positioning grooves (1011) being arranged in a row at both ends of the front side of the main body (101).

3. The housing welding processing equipment for twin-screw pump production as claimed in claim 2, characterized in that: The mounting mechanism (1) further comprises: mounting rods (102), two sets of mounting rods (102) are provided, and the mounting rods (102) are symmetrically arranged on both sides of the main body (101); and connecting gears (1021), the connecting gears (1021) are rotatably mounted on the mounting rods (102).

4. The housing welding processing equipment for twin-screw pump production as claimed in claim 2, characterized in that: The mounting mechanism (1) further comprises: a slide groove (103), wherein two groups of the slide grooves (103) are provided, and the slide grooves (103) are provided at the inner ends of both sides of the main body (101), the slide grooves (103) penetrate the rear ends of both ends of the main body (101), and two groups of guide rods are provided in the slide grooves (103), and an elastic member is sleeved on the front guide rods; and a support frame (104), wherein the support frame (104) is plugged into the bottom of the main body (101), and the upper end of the support frame (104) is plugged into the circular holes at the four corners of the main body (101).

5. The casing welding processing equipment for twin-screw pump production as claimed in claim 1, characterized in that: The receiving assembly (2) comprises: a lifting plate (201), wherein two groups of ear plates are symmetrically arranged at the rear end of the lifting plate (201), and racks are symmetrically arranged on both sides of the lifting plate (201); and mounting grooves (2011), wherein three groups of mounting grooves (2011) are arranged in equal rows at the inner end of the lifting plate (201), and the mounting grooves (2011) penetrate the upper and lower ends of the lifting plate (201).

6. The casing welding processing equipment for twin-screw pump production as claimed in claim 5, characterized in that: The receiving assembly (2) further comprises: an inner groove (202), wherein two groups of inner grooves (202) are provided, and the inner grooves (202) are located at the inner ends of the lifting plate (201), and the inner grooves (202) penetrate the front and rear ends of the lifting plate (201), and the inner grooves (202) are located between the three groups of mounting grooves (2011); and a positioning rod (2021), wherein the positioning rod (2021) is slidably installed in the inner groove (202) via an elastic member, and the positioning rod (2021) penetrates the inner groove (202), and a wedge-shaped structure is provided on the rear side of the positioning rod (2021).

7. The casing welding processing equipment for twin-screw pump production as claimed in claim 5, characterized in that: The receiving assembly (2) further comprises: a receiving plate (203), the receiving plate (203) being rotatably mounted in the mounting groove (211), and having two groups of pull rods provided at the bottom of the receiving plate (203), and having two groups of rectangular grooves symmetrically provided at the upper inner end of the receiving plate (203); and a clamping block (2031), the clamping block (2031) being slidably mounted in the rectangular groove at the upper inner end of the receiving plate (203).

8. The housing welding processing equipment for twin-screw pump production as claimed in claim 7, characterized in that: The receiving assembly (2) further comprises: an adjusting member (204), the adjusting member (204) being rotatably mounted on the bottom of the receiving plate (203), a bevel gear being provided at the upper end of the adjusting member (204), and a knob being installed on the adjusting member (204) passing through the receiving plate (203); and a control screw (205), two groups of the control screws (205) being provided, and the control screws (205) being rotatably mounted in two groups of rectangular grooves in the receiving plate (203), the control screws (205) being threadedly connected to the clamping block (2031), and bevel teeth being provided on the inner side of the adjusting member (204), and the bevel gear on the adjusting member (204) being meshed with the bevel gear on the adjusting member (204).

9. The casing welding processing equipment for twin-screw pump production as claimed in claim 1, characterized in that: The moving part (3) further comprises: a moving rod (301), wherein a rectangular through slot is provided inside the moving rod (301), and a group of screw rods connected to a motor are rotatably mounted in the rectangular through slot; and a connecting rack (3011), wherein the connecting rack (3011) is provided on both sides of the moving rod (301), and screw rods are rotatably mounted in the connecting rack (3011), and the screw rods are threadedly connected to the moving rod (301).

10. The housing welding processing equipment for twin-screw pump production as claimed in claim 9, characterized in that: The moving part (3) further comprises: a slider (302), the slider (302) being slidably mounted on the moving rod (301), the slider (302) being threadably connected to a screw in the moving rod (301), a T-shaped slot being provided at the upper end of the slider (302), and a worm connected to a motor being rotatably mounted at the rear end of the slider (302); and a rotating member (3021), the rotating member (3021) being rotatably mounted at the rear end of the slider (302), the rotating member (3021) being composed of a group of gears and two groups of worm wheels, the gears being located between the two groups of worm wheels, and the worm wheels on both sides of the rotating member (3021) being drivingly connected to the worm at the rear side of the slider (302).

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