A screw pump body welding device and a welding process thereof

Abstract

This invention discloses a screw pump body welding device and its welding process, including a processing box. A welding mechanism is located inside the processing box to perform machining operations between screw pump bodies. This invention relates to the field of metal welding technology. The screw pump body welding device and its welding process, through the welding mechanism, utilize an adjustment unit to adjust the angle of the welding components. The rotation of the active column drives the passive column to rotate, causing the welding components and the rear linkage column to rotate synchronously. This, combined with the meshing rotation of the rotating gear on the rack, allows for adaptive angle adjustment operations for welding between cylindrical pump bodies of different sizes. Furthermore, while adjusting the angle, the vertical position is also adjusted simultaneously to maintain a suitable welding angle. The height of the welding laser head from the welding point can also be adjusted synchronously, thereby effectively improving the welding applicability and maintaining welding quality.

Description

Technical Field

[0001] This invention relates to the field of metal welding technology, specifically to a screw pump body welding device and its welding process. Background Technology

[0002] The working principle of laser welding is to focus a laser beam on the surface of the workpiece to form a high-energy-density heat source, which melts the workpiece and forms a weld.

[0003] The reference patent title is: A Pump Body Welding Device (Patent Publication No.: CN117086530A, Patent Publication Date: 2023-11-21), comprising: a base, including a slide rail 1, a slide rail 2, a connecting frame fixedly disposed at one end of the slide rail 2, and a chuck 1 disposed on the upper part of the connecting frame, the chuck 1 being fixedly connected to a rotating shaft, the pump body being welded under the rotation of the rotating shaft; a moving mechanism, disposed at the other end of the slide rail 2, including a moving frame and a chuck 2 disposed on the upper part of the moving frame; and a feeding mechanism, disposed on the slide rail 1, including a sliding block and a feeding platform disposed on the sliding block, a supporting spring connecting the sliding block and the feeding platform, the feeding platform being used to place the pump body, the sliding block and the feeding platform moving along the slide rail 1 under the drive of the moving frame, the pump body placed on the feeding platform being placed on the rotating shaft, the circular runout of the pump body during the welding process being reduced by clamping at both ends and supporting by top rollers on both sides of the pump body, improving the welding quality, facilitating the installation of the pump body and flange, and improving welding efficiency.

[0004] Based on the description in the above documents, when performing welding operations between columnar components in existing screw pump bodies, there are also differences in size between adjacent pump body shells. The welding operation cannot adapt to the angle adjustment operation, and the vertical distance between the laser head and the welding point changes after adjustment, causing the welding quality to change. Therefore, the present invention provides a screw pump body welding device and its welding process. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a screw pump body welding device and its welding process. This solves the problem that when welding columnar components of existing screw pump bodies, there are dimensional differences between adjacent pump body shells, and the welding operation cannot adapt to angle adjustment. As a result, the vertical distance between the laser head and the welding point changes after adjustment, causing variations in welding quality.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a screw pump body welding device, comprising a processing box, wherein a welding mechanism is provided inside the processing box to perform processing operations between screw pump bodies, and the welding mechanism includes: The clamping parts, symmetrically arranged in the machining box, are used to clamp and rotate the screw pump body. The drive unit enables the base to move horizontally to the left and right sides via a drive component. A bracket is installed on the top of the base, and the welding assembly is moved vertically via a drive component on the bracket based on the same principle. The adjustment unit enables the angle adjustment of the welding assembly and includes a connecting block and an adjustment box. The adjustment box is equipped with a rotating unit that allows the welding assembly to rotate and adjust in the left and right directions. The drive of the rotating unit, in conjunction with the linkage unit, enables the adjustment box to move vertically on the connecting block. When the rotating unit is pressed, it can switch between left and right rotation.

[0007] Preferably, the clamping part includes an existing three-jaw cylinder and a vertical plate disposed at the bottom of the inner cavity of the processing box. The three-jaw cylinder is rotatably mounted on the vertical plate. A drive motor is mounted on the left side of the vertical plate, and the output shaft of the drive motor is fixed to the side of the three-jaw cylinder and drives the three-jaw cylinder to rotate during driving.

[0008] Preferably, the rotating unit includes: The active column extends through to the outside of the regulating box, and a linkage rod is connected to the surface of the active column via a bearing. The auxiliary column is rotatably mounted at the top of the linkage rod. A vertical engagement assembly is provided at the extension end of the auxiliary column to realize the vertical movement adjustment operation between the connecting block and the regulating box. A control unit is provided between the passive column and the active column to realize the limit operation after the active column is pressed, and the extension end of the passive column is fixed to the surface of the welding assembly.

[0009] Preferably, the vertical engagement assembly includes: The upper and lower surfaces of the connecting block have vertically opened placement slots, and the extended end of the auxiliary drive column is equipped with a rotating gear inside the placement slot. The left rack is installed on the left side of the placement slot, and when the rotating gear meshes with the left rack, it rotates clockwise on the left rack, causing the entire adjusting box to move vertically downward relative to the connecting block; The right rack is installed on the right side of the placement slot, and is located behind the left rack in the front-to-back direction. When the rotating gear meshes with the right rack, it rotates counterclockwise on the right rack, causing the entire adjusting box to move vertically downward relative to the connecting block.

[0010] Preferably, the control unit includes: A cylindrical platform is installed at the end of the passive column near the active column, and a cylindrical ring is fitted on the surface of the passive column. A limit plate is installed on the surface of the passive column behind the cylindrical ring. The front side of the cylindrical platform is arc-shaped and the rear side is horizontal, while the front side of the cylindrical ring is horizontal and the rear side is arc-shaped. The trapezoidal block is symmetrically arranged in the cylindrical groove inside the active column. The surface of the cylindrical platform and the cylindrical groove are connected by a sliding component to achieve relative sliding and synchronous rotation. The trapezoidal block is connected by an elastic component to achieve extension and retraction after being pushed. A telescopic spring is installed between the end face of the cylindrical platform and the opposite side of the cylindrical groove. The rear side of the trapezoidal block is arc-shaped and the front and rear sides are horizontal.

[0011] Preferably, the sliding assembly includes sliding strips symmetrically mounted on the surface of the passive column, and sliding grooves are symmetrically opened inside the cylindrical groove of the active column, with the sliding strips located inside the sliding grooves for sliding adaptation.

[0012] Preferably, the elastic component includes an abutment spring mounted on the side of the trapezoidal block, and an abutment groove is provided inside the cylindrical groove. The other end of the abutment spring is fixed to the inner wall of the abutment groove, and the trapezoidal block slides inside the abutment groove.

[0013] Preferably, the linkage unit includes two sprockets, and a linkage column is installed on the opposite side of the passive column connected to the welding assembly. The linkage column rotates with the inside of the regulating box, and the sprockets are rotatably connected to a support plate through bearings. The end face of the support plate is fixed to the inner wall of the regulating box. The surfaces of the two sprockets are connected by a chain drive, and the two sprockets are respectively connected to the surfaces of the auxiliary drive column and the linkage column through sliding components of the same principle. The surface of the linkage column is provided with a limiter to limit the rotation of the linkage column.

[0014] Preferably, the limiting member includes: The control cylinder is fixedly installed on the inner wall of the regulating box, and a limit gear is installed on the surface of the linkage column; The limiting tooth controls the piston end of the cylinder to be fixed at the plane of the limiting tooth, and the limiting tooth restricts the rotation of the linkage column after it moves to mesh with the limiting gear.

[0015] This invention also discloses a welding process for a screw pump body, specifically including the following steps: S1. Place the pump body to be welded in the clamping part to achieve the fitting operation at the welding point; S2. The vertical and horizontal displacement of the welding assembly, as well as the welding angle, are adjusted by the adjustment and drive units according to the condition of the welding point. S3. Start the welding assembly to perform the welding operation, and complete the ring welding by rotating the clamping pump body.

[0016] This invention provides a screw pump body welding device and its welding process. Compared with the prior art, it has the following advantages: 1. The screw pump body welding device and its welding process, by setting up a welding mechanism, uses an adjustment unit to realize the angle adjustment of the welding components. The rotation of the active column drives the passive column to rotate, and makes the welding components and the rear linkage column rotate synchronously. With the meshing rotation of the rotating gear on the rack, it can realize the adaptive angle adjustment operation for welding between columnar pump bodies of different sizes. At the same time as the angle adjustment, the vertical position is also adjusted to maintain a suitable welding angle. The height of the welding laser head from the welding point can also be adjusted synchronously, thereby effectively improving the application range of welding and maintaining the welding quality.

[0017] 2. The screw pump body welding device and its welding process, by setting up a clamping part, places the columnar screw pump body to be welded into the three-jaw cylinders on both sides to achieve clamping operation, and achieves close contact operation of the columnar screw pump body to be welded. Then, the welding assembly is started to perform laser welding operation, and the drive motor is started to drive the clamped workpiece to rotate slowly, thereby avoiding the unevenness of hand welding, ensuring the accuracy and safety of welding operation, and avoiding repeated welding of already welded areas.

[0018] 3. The screw pump body welding device and its welding process, by setting up a control unit, when the welding component needs to be adjusted clockwise to counterclockwise, the active column is pressed, and then the cylindrical platform and the trapezoidal block make contact with each other and pass over the trapezoidal block to achieve contact between the plane and the plane of the trapezoidal block, realizing the limit lock. The angle adjustment is controlled by the rotation of the active column. In this way, whether the welding angle is adjusted clockwise or counterclockwise, the vertical position adjustment can be achieved synchronously by switching the method, thereby improving the applicability of the welding device. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the present invention; Figure 3 This is a three-dimensional structural diagram of the driving part of the present invention; Figure 4 This is a three-dimensional structural diagram of the adjusting part of the present invention; Figure 5 This is a three-dimensional structural cross-sectional view of the adjustment part of the present invention; Figure 6 This is a three-dimensional structural diagram of the rotating unit of the present invention; Figure 7 This is a three-dimensional structural exploded view of the limiting component of the present invention; Figure 8 This is a three-dimensional structural diagram of the rotating unit of the present invention; Figure 9This is a first-view perspective three-dimensional structural cross-sectional view of the rotating unit of the present invention; Figure 10 This is a second-view perspective three-dimensional structural cross-sectional view of the rotating unit of the present invention; Figure 11 This is a three-dimensional structural exploded view of the elastic component of the present invention.

[0020] In the picture: 1-Processing box; 2-Clamping part, 21-Three-jaw cylinder, 22-Vertical plate, 23-Drive motor; 3-Drive unit, 31-Drive component, 311-Servo motor, 312-Threaded rod, 32-Base, 33-Bracket, 34-Welding assembly; 4-Adjusting section, 41-Connecting block, 42-Adjusting box; 5-Rotating unit, 51-Driving column, 52-Linkage rod, 53-Auxiliary column, 54-Vertical meshing assembly, 541-Placement slot, 542-Rotating gear, 543-Left rack, 544-Right rack, 55-Passive column; 6-Linkage unit, 61-Sprocket, 62-Linkage column, 63-Support plate, 64-Chain belt, 65-Limiting component, 651-Control cylinder, 652-Limiting gear, 653-Limiting tooth; 7-Control unit, 71-Cylindrical platform, 72-Cylindrical ring, 73-Limiting plate, 74-Trapezoidal block, 75-Cylindrical groove, 76-Sliding assembly, 761-Sliding bar, 762-Sliding groove, 77-Elastic assembly, 771-Abutting spring, 772-Abutting groove, 78-Telescopic spring. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1-11 This invention provides two technical solutions: Example 1: A screw pump body welding device, including a processing box 1, with a welding mechanism located inside the processing box 1 to perform processing operations on the screw pump body, and the welding mechanism includes: Clamping part 2, symmetrically arranged in machining box 1, is used to clamp and rotate the screw pump body; The drive unit 3, through the drive component 31, causes the base 32 to move horizontally to the left and right. A bracket 33 is installed on the top of the base 32, and the welding assembly 34 is moved vertically through the drive component 31 on the bracket 33, which operates on the same principle. The adjustment unit 4 enables the angle adjustment of the welding assembly 34 and includes a connecting block 41 and an adjustment box 42. The adjustment box 42 is equipped with a rotating unit 5, which allows the welding assembly 34 to rotate in the left and right directions. The drive of the rotating unit 5, in conjunction with the linkage unit 6, enables the adjustment box 42 to move vertically on the connecting block 41. When the rotating unit 5 is pressed, it can switch between left-side rotation and right-side rotation.

[0023] The connecting block 41 and the adjusting box 42 are connected by a protrusion installed on the adjusting box 42 and a groove opened on the surface of the adjusting box 42, so that the protrusion and the groove slide together, and the connecting block 41 and the adjusting box 42 only move vertically relative to each other.

[0024] By incorporating a welding mechanism, the angle of the welding assembly 34 can be adjusted using the adjustment unit 4. The rotation of the active column 51 drives the passive column 55 to rotate, causing the welding assembly 34 and the rear linkage column 62 to rotate synchronously. This, combined with the meshing rotation of the rotating gear 542 on the rack, enables adaptive angle adjustment for welding between columnar pump bodies of different sizes. Simultaneously, the vertical position is adjusted to maintain a suitable welding angle. At the same time, the height of the welding laser head from the welding point can also be adjusted synchronously, thereby effectively improving the applicability of the welding and maintaining the welding quality.

[0025] The welding component 34 is an existing mature laser welding device. It focuses a laser beam on the surface of the workpiece to form a high-energy-density heat source, which melts the workpiece and forms a weld.

[0026] Please see Figure 2 In this embodiment of the invention, the clamping part 2 includes a conventional three-jaw cylinder 21 and a vertical plate 22 disposed at the bottom of the inner cavity of the processing box 1. The three-jaw cylinder 21 is adaptively adjusted according to the size of the pump body, and the three-jaw cylinder 21 is rotatably mounted on the vertical plate 22. A drive motor 23 is mounted on the left side of the vertical plate 22, and the output shaft of the drive motor 23 is fixed to the side of the three-jaw cylinder 21 and drives the rotation of the three-jaw cylinder 21 during driving.

[0027] By providing a clamping part 2, the columnar screw pump body to be welded is placed in the three-jaw cylinders 21 on both sides to achieve clamping operation, and to achieve close contact operation of the columnar screw pump body to be welded. Then, the welding assembly 34 is started to perform laser welding operation, and the drive motor 23 is started to drive the clamped workpiece to rotate slowly, thereby avoiding the unevenness of hand welding, ensuring the accuracy and safety of welding operation, and avoiding repeated welding of already welded areas.

[0028] The drive motor 23 is a three-phase asynchronous motor. The drive motor 23 is electrically connected to an external power supply and connects to the equipment's own control system to complete the opening and closing operation. It rotates at a relatively slow speed during operation. The three-jaw cylinder 21 is also an existing technology device that enables the clamping operation of the product. The vertical plate 22 set at the bottom of the inner cavity of the processing box 1 can be adjusted to move left and right. This is a conventional setting technology used to achieve the alignment operation of the welding joint between two products.

[0029] Please see Figures 2-3 In this embodiment of the invention, the driving component 31 includes a servo motor 311 and a threaded rod 312. The output shaft of the servo motor 311 is fixed to one end of the threaded rod 312 via a coupling. The surface of the threaded rod 312 is threaded with a component that needs to move and can move horizontally or vertically under constraints.

[0030] The driving component 31 of the driving base 32 has a servo motor 311 installed on the inner wall of the processing box 1, and the threaded rod 312 passes through and is threadedly connected to the base 32. The bottom of the base 32 and the bottom of the inner cavity of the processing box 1 are limited to slide by slide rails and slide grooves to achieve horizontal movement on the left and right sides. The drive component 31 of the drive welding assembly 34 has a servo motor 311 mounted on the top of the bracket 33, and the surface of the threaded rod 312 passes through and is threadedly connected to the connecting block 41. The bracket 33 has sliding rods symmetrically arranged in the vertical direction inside, and the connecting block 41 passes through the sliding rods and can slide relative to the sliding rods.

[0031] Please see Figures 5-6 In this embodiment of the invention, the rotating unit 5 includes: The active column 51 extends through to the outside of the regulating box 42, and the surface of the active column 51 is connected to the linkage rod 52 by a bearing. The top of the linkage rod 52 is rotatably mounted with the auxiliary column 53. A vertical engagement assembly 54 is provided at the extended end of the auxiliary column 53 to realize the vertical movement adjustment operation between the connecting block 41 and the regulating box 42. A control unit 7 is provided between the passive post 55 and the active post 51 to realize the limit operation after the active post 51 is pressed, and the extension end of the passive post 55 is fixed to the surface of the welding assembly 34.

[0032] Please see Figure 5 In this embodiment of the invention, the vertical engagement assembly 54 includes: A vertically opening placement groove 541 is located on the upper and lower surfaces of the connecting block 41, and a rotating gear 542 is installed at the extended end of the auxiliary moving column 53 inside the placement groove 541. The left rack 543 is installed on the left side of the placement slot 541, and when the rotating gear 542 meshes with the left rack 543, it rotates clockwise on the left rack 543, causing the entire adjusting box 42 to move vertically downward relative to the connecting block 41. The right rack 544 is installed on the right side of the placement slot 541, and the right rack 544 is located behind the left rack 543 in the front-rear direction. When the rotating gear 542 meshes with the right rack 544, it rotates counterclockwise on the right rack 544, and causes the entire adjusting box 42 to move vertically downward relative to the connecting block 41.

[0033] Please see Figures 9-11 In this embodiment of the invention, the control unit 7 includes: A cylindrical platform 71 is installed at the end of the passive column 55 near the active column 51, and a cylindrical ring 72 is fitted on the surface of the passive column 55. A limit plate 73 is installed on the surface of the passive column 55 and behind the cylindrical ring 72. The front side of the cylindrical platform 71 is arc-shaped and the rear side is horizontal, while the front side of the cylindrical ring 72 is horizontal and the rear side is arc-shaped. Trapezoidal blocks 74 are symmetrically arranged in cylindrical grooves 75 inside the active column 51. The surface of the cylindrical platform 71 and the cylindrical groove 75 are relatively slidable and synchronously rotated through a sliding component 76. The trapezoidal blocks 74 are extended and retracted after being pushed by an elastic component 77. A telescopic spring 78 is installed between the end face of the cylindrical platform 71 and the opposite side of the cylindrical groove 75. The rear side of the trapezoidal blocks 74 is arc-shaped and the front and rear sides are horizontal.

[0034] By incorporating a control unit 7, when the welding assembly 34 needs to switch from clockwise to counterclockwise adjustment, the active column 51 is pressed. The cylindrical platform 71 then abuts against the trapezoidal block 74 and passes over the trapezoidal block 74 to achieve contact between the planes of the two blocks, thus achieving a limit lock. The angle adjustment is controlled by the rotation of the active column 51. Therefore, whether the welding angle is adjusted clockwise or counterclockwise, the vertical position adjustment can be synchronously achieved by switching modes, thereby improving the applicability of the welding device.

[0035] The return elasticity of the telescopic spring 78 enables the drive column 51 to move rearward relative to the cylindrical platform 71. After the cylindrical platform 71 abuts against the trapezoidal block 74, it passes over the trapezoidal block 74 to achieve contact at the plane of the trapezoidal block 74, achieving a limit lock. At this time, the rotating gear 542 meshes with the left rack 543, which can realize the clockwise angle adjustment operation of the welding assembly 34. Then, continuing to press the drive column 51 will cause the cylindrical ring 72 to abut against the trapezoidal block 74 and pass over the trapezoidal block 74 to achieve the engagement of the cylindrical platform 71 and the cylindrical ring 72 at the plane. Thus, under the elastic return of the telescopic spring 78, the cylindrical platform 71 and the cylindrical ring 72 simultaneously abut against the trapezoidal block 74 and move rearward past the trapezoidal block 74. Please see Figure 9 In this embodiment of the invention, the sliding component 76 includes a sliding strip 761 symmetrically mounted on the surface of the passive column 55, and a sliding groove 762 symmetrically opened inside the cylindrical groove 75 of the active column 51, with the sliding strip 761 located inside the sliding groove 762 for sliding adaptation.

[0036] Please see Figure 10 In this embodiment of the invention, the elastic component 77 includes an abutment spring 771 installed on the side of the trapezoidal block 74, and an abutment groove 772 is provided inside the cylindrical groove 75. The other end of the abutment spring 771 is fixed to the inner wall of the abutment groove 772, and the trapezoidal block 74 slides inside the abutment groove 772.

[0037] Please see Figures 5-6 In this embodiment of the invention, the linkage unit 6 includes two sprockets 61. The welding assembly 34 is located on the opposite side connected to the passive column 55 and a linkage column 62 is installed. The linkage column 62 rotates inside the regulating box 42. The sprockets 61 are rotatably connected to the support plate 63 through bearings. The end face of the support plate 63 is fixed to the inner wall of the regulating box 42. The surfaces of the two sprockets 61 are connected by a chain belt 64. The two sprockets 61 are respectively connected to the surfaces of the auxiliary column 53 and the linkage column 62 through sliding assemblies 76 of the same principle. The surface of the linkage column 62 is provided with a limiter 65 to limit the rotation of the linkage column 62.

[0038] Please see Figure 7 In this embodiment of the invention, the limiting member 65 includes: The control cylinder 651 is fixedly installed on the inner wall of the regulating box 42, and the limit gear 652 is installed on the surface of the linkage column 62. The limiting tooth 653 controls the piston end of the control cylinder 651 to be fixed at the plane of the limiting tooth 653, and the limiting tooth 653 restricts the rotation of the linkage column 62 after it moves to mesh with the limiting gear 652.

[0039] Furthermore, the control cylinder 651 is connected to the external air circuit, and the control cylinder 651 completes the opening and closing operation through the connection of the equipment's built-in control system.

[0040] Example 2: The difference from Example 1 is that the present invention also discloses a screw pump body welding process, specifically including the following steps: S1. Place the pump body to be welded in the clamping part 2 to achieve the fitting operation at the welding point; S2. The vertical and horizontal displacement of the welding assembly 34, as well as the welding angle, are adjusted by the adjustment unit 4 and the drive unit 3 according to the condition of the welding point. S3. Start the welding assembly 34 to perform the welding operation, and complete the ring welding by rotating the clamping pump body.

[0041] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0042] During operation, the columnar screw pump body to be welded is placed in the three-jaw cylinders 21 on both sides to achieve clamping operation. Then, the existing moving technology is used to move the three-jaw cylinder 21 on one side horizontally to achieve the contact operation of the welding part of the columnar screw pump body to be welded. Then the drive unit 3 realizes the horizontal movement of the welding assembly 34 to the left and right and the vertical movement until the laser head of the welding assembly 34 is directly above the welding point. Then, the adjustment of the horizontal position and the adjustment of the welding angle are determined according to the calculation. When the welding assembly 34 needs to be adjusted clockwise, the active column 51 is rotated. Under the limit of the sliding component 76, the active column 51 realizes the synchronous rotation of the passive column 55. Then, the passive column 55 drives the welding assembly 34 and the rear linkage column 62 to rotate clockwise synchronously. The rotation of the linkage column 62 is limited by the sliding component 76 of the same principle to realize the synchronous rotation between the sprockets 61. The sprockets 61 drive the auxiliary column 53 to rotate according to the transmission of the chain belt 64. Then, the auxiliary column 53 drives the rotation of the rotating gear 542. At this time, the rotating gear 542 meshes with the left rack 543. Therefore, the rotating gear 542 rotates clockwise on the left rack 543, realizing the vertical downward movement of the entire adjustment box 42 relative to the connecting block 41. When the welding assembly 34 needs to be adjusted counterclockwise, the active column 51 is pressed, which compresses the telescopic spring 78 to retract. Then, the cylindrical platform 71 abuts against the trapezoidal block 74 and passes over the trapezoidal block 74 to achieve contact between the plane of the platform and the plane of the trapezoidal block 74, thus achieving a limit lock. The movement of the active column 51 drives the auxiliary column 53 and the rotating gear 542 to move backward through the linkage rod 52. At this time, the rotating gear 542 meshes with the surface of the right rack 544. Then, the active column 51 is rotated, and the active column 51 achieves synchronous rotation of the passive column 55 under the limit of the sliding assembly 76. Then, the passive column 55 drives the welding assembly 34 and the rear linkage column 62 to rotate counterclockwise synchronously, and the rotating gear 542 rotates clockwise on the right rack 544, so that the entire adjustment box 42 moves vertically downward relative to the connecting block 41. After the adjustment is completed, the control cylinder 651 is started, and the control cylinder 651 drives the limit tooth 653 to move until the limit tooth 653 meshes with the limit gear 652, thereby realizing the rotation limit operation of the linkage column 62. Finally, the welding assembly 34 is activated to perform laser welding, and the drive motor 23 is activated to rotate the clamped workpiece, thereby achieving a uniform welding operation.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

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

Claims

1. A screw pump body welding device, comprising a processing box (1), characterized in that: A welding mechanism is installed inside the machining box (1) to perform machining operations between the screw pump bodies, and the welding mechanism includes: The clamping part (2) is symmetrically arranged in the processing box (1) to realize the clamping and rotation drive of the screw pump body; The drive unit (3) causes the base (32) to move horizontally to the left and right sides via the drive component (31). A bracket (33) is installed on the top of the base (32), and the welding assembly (34) is moved vertically via the drive component (31) on the bracket (33). The adjustment unit (4) realizes the angle adjustment of the welding assembly (34) and includes a connecting block (41) and an adjustment box (42). The adjustment box (42) is equipped with a rotating unit (5) to adjust the rotation of the welding assembly (34) in the left and right directions. The drive of the rotating unit (5) cooperates with the linkage unit (6) to realize the vertical movement adjustment operation of the adjustment box (42) on the connecting block (41). When the rotating unit (5) is pressed, the left-side rotation or right-side rotation switching operation can be completed.

2. The screw pump body welding device according to claim 1, characterized in that: The clamping part (2) includes an existing three-jaw cylinder (21) and a vertical plate (22) set at the bottom of the inner cavity of the processing box (1). The three-jaw cylinder (21) is rotatably mounted on the vertical plate (22). A drive motor (23) is mounted on the left side of the vertical plate (22). The output shaft of the drive motor (23) is fixed to the side of the three-jaw cylinder (21) and drives the three-jaw cylinder (21) to rotate when driven.

3. The screw pump body welding device according to claim 1, characterized in that: The rotating unit (5) includes: The active column (51) extends through to the outside of the regulating box (42), and the surface of the active column (51) is connected to the linkage rod (52) by a bearing. The top of the linkage rod (52) is rotatably mounted with the auxiliary column (53). A vertical engagement assembly (54) is provided at the extended end of the auxiliary column (53) to realize the vertical movement adjustment operation between the connecting block (41) and the regulating box (42). A control unit (7) is provided between the passive column (55) and the active column (51) to realize the limit operation after the active column (51) is pressed, and the extension end of the passive column (55) is fixed to the surface of the welding assembly (34).

4. The screw pump body welding device according to claim 3, characterized in that: The vertical engagement assembly (54) includes: A vertically opening placement groove (541) is located on the upper and lower surfaces of the connecting block (41), and a rotating gear (542) is installed at the extended end of the auxiliary moving column (53) inside the placement groove (541). The left rack (543) is installed on the left side of the placement slot (541), and when the rotating gear (542) meshes with the left rack (543), it rotates clockwise on the left rack (543) and causes the entire adjustment box (42) to move vertically downward relative to the connecting block (41); The right rack (544) is installed on the right side of the placement slot (541), and the right rack (544) is located behind the left rack (543) in the front-rear direction. When the rotating gear (542) meshes with the right rack (544), it rotates counterclockwise on the right rack (544) and causes the entire adjustment box (42) to move vertically downward relative to the connecting block (41).

5. The screw pump body welding device according to claim 3, characterized in that: The control unit (7) includes: A cylindrical platform (71) is installed at the end of the passive column (55) near the active column (51), and a cylindrical ring (72) is fitted on the surface of the passive column (55). A limit plate (73) is installed on the surface of the passive column (55) and on the rear side of the cylindrical ring (72). The front side of the cylindrical platform (71) is arc-shaped and the rear side is horizontal, while the front side of the cylindrical ring (72) is horizontal and the rear side is arc-shaped. The trapezoidal block (74) is symmetrically arranged in the cylindrical groove (75) opened inside the active column (51). The surface of the cylindrical platform (71) and the cylindrical groove (75) are relatively sliding and synchronously rotating through the sliding component (76). The trapezoidal block (74) is extended and retracted after being pushed by the elastic component (77). A telescopic spring (78) is installed between the end face of the cylindrical platform (71) and the opposite side of the cylindrical groove (75). The rear side of the trapezoidal block (74) is arc-shaped and the front and rear sides are horizontal.

6. The screw pump body welding device according to claim 5, characterized in that: The sliding assembly (76) includes a sliding strip (761) symmetrically installed on the surface of the passive column (55), and a sliding groove (762) is symmetrically opened inside the cylindrical groove (75) of the active column (51), and the sliding strip (761) is located inside the sliding groove (762) to adapt to sliding.

7. The screw pump body welding device according to claim 5, characterized in that: The elastic component (77) includes an abutment spring (771) installed on the side of the trapezoidal block (74), and an abutment groove (772) is provided inside the cylindrical groove (75). The other end of the abutment spring (771) is fixed to the inner wall of the abutment groove (772), and the trapezoidal block (74) slides inside the abutment groove (772).

8. The screw pump body welding device according to claim 5, characterized in that: The linkage unit (6) includes two sprockets (61), a welding assembly (34) is installed on the opposite side of the passive column (55) and a linkage column (62) is installed. The linkage column (62) rotates inside the regulating box (42). The sprocket (61) is rotatably connected to a support plate (63) through a bearing. The end face of the support plate (63) is fixed to the inner wall of the regulating box (42). The surfaces of the two sprockets (61) are connected by a chain belt (64). The two sprockets (61) are respectively connected to the surfaces of the auxiliary column (53) and the linkage column (62) through a sliding assembly (76) of the same principle. The surface of the linkage column (62) is provided with a limit piece (65) to realize the limit operation of the rotation of the linkage column (62).

9. A screw pump body welding device according to claim 8, characterized in that: The limiting member (65) includes: A control cylinder (651) is fixedly installed on the inner wall of the regulating box (42), and a limit gear (652) is installed on the surface of the linkage column (62). The limiting tooth (653) controls the piston end of the cylinder (651) to be fixed at the plane of the limiting tooth (653), and the limiting tooth (653) restricts the rotation of the linkage column (62) after it moves to mesh with the limiting gear (652).

10. A screw pump body welding process, employing the screw pump body welding device according to any one of claims 1-9, characterized in that: Specifically, the following steps are included: S1. Place the pump body to be welded in the clamping part (2) to clamp and achieve the fitting operation at the welding point; S2. The vertical and horizontal displacement of the welding assembly (34) and the welding angle are adjusted by the adjustment unit (4) and the drive unit (3) according to the condition of the welding point. S3. Start the welding assembly (34) to perform the welding operation, and complete the ring welding by rotating the clamping pump body.

Images