Machining positioning device for laser repair of ball valve

Abstract

The invention relates to the technical field of ball valve laser processing, and particularly discloses a processing positioning device for ball valve laser repair, which comprises a processing table, a turntable is rotatably arranged at the top of the processing table, two groups of displacement mechanisms are symmetrically arranged on the upper side of the turntable, and supporting rods are arranged on the upper sides of the two groups of displacement mechanisms; the upper ends of the two supporting rods are fixedly connected with bearing seats, the sides, close to each other, of the two bearing seats are rotationally connected with positioning shafts, the displacement mechanism clamps the valve ball by controlling displacement of the two positioning shafts, the tail end of one positioning shaft is fixedly connected with a hollow cylinder, and the top of the machining table is fixedly connected with a linear motor. A circle supporting mechanism and a driving mechanism are arranged on the upper side of the linear motor, and a supporting frame is fixedly connected to the side portion of the machining table. Different rotating directions can be switched according to machining requirements, the valve ball machining device can adapt to valve balls of more models, and dead-corner-free machining is easier to achieve along with different models of the valve balls.

Description

Technical Field

[0001] The present invention relates to the technical field of laser processing of ball valves, and more particularly to a processing positioning device for laser repair of ball valve parts. Background Art

[0002] Laser repair of ball valves, especially using laser cladding or laser spray welding technology, is an advanced surface repair method. It efficiently and precisely repairs the wear, corrosion or damage of the sealing surface and other key components of the ball valve. The laser cladding or spray welding technology uses a high-energy laser beam to rapidly heat and melt the surface of the workpiece, while melting and depositing a specific material (such as metal powder or wire) on the surface of the workpiece to form a deposited layer metallurgically bonded to the base material.

[0003] Patent No. CN118028804A discloses a processing positioning device for laser repair of ball valve parts, which relates to the technical field of laser cladding, and includes an attitude adjustment mechanism, an axial positioning mechanism and a circumferential positioning mechanism. Among them: the attitude adjustment mechanism is arranged at a lower position and includes a first motor and a second motor, and drives the ball valve spool to move through the linkage between the first motor and the second motor, and realizes the spatial attitude adjustment of the ball valve spool; the axial positioning mechanism is symmetrically arranged on the left and right of the attitude adjustment mechanism and includes a first hydraulic cylinder and a center point, and drives the center point to axially press against the end face of the ball valve spool through the first hydraulic cylinder, and realizes the axial positioning of the ball valve spool; the circumferential positioning mechanism is arranged in the middle of the attitude adjustment mechanism and includes a second hydraulic cylinder and a positioning plate, and drives the positioning plate to symmetrically abut against the side surface of the ball valve spool through the second hydraulic cylinder, and realizes the axial positioning of the ball valve spool. The present invention has the characteristics of reasonable scheme, ingenious structure, convenient use, fast and accurate positioning.

[0004] The design of the ball valve processing station needs to consider various factors, such as processing accuracy, process flow, equipment layout, etc. The traditional processing station adopts a fixed process flow and equipment layout, which limits the adaptability of the station to different specifications and types of ball valves. It can only fix the two side planes of the ball valve and cannot fix it from the through groove of the ball valve, resulting in incomplete processing surfaces and easy existence of dead corners. When different types of ball valves need to be processed, it may be necessary to re-design or adjust the station, increasing the production preparation time and cost, and affecting the repair work of the ball valve. For this reason, we propose a processing positioning device for laser repair of ball valve parts. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a processing positioning device for laser repair of ball valve parts to solve the problems existing in the above-mentioned background art.

[0006] The present invention provides the following technical solution: A processing positioning device for laser repair of a ball valve part, including a processing table, a turntable is rotatably arranged on the top of the processing table, two sets of displacement mechanisms are symmetrically arranged on the upper side of the turntable, support rods are arranged on the upper sides of the two sets of displacement mechanisms, bearing seats are fixedly connected to the upper ends of the two support rods, positioning shafts are rotatably connected to the closer sides of the two bearing seats, and the displacement mechanism clamps the valve ball by controlling the displacement of the two positioning shafts. A hollow cylinder is fixedly connected to the end of one of the positioning shafts, a linear motor is fixedly connected to the top of the processing table, a ball expanding mechanism and a driving mechanism are arranged on the upper side of the linear motor, a support frame is fixedly connected to the side of the processing table, an electric telescopic arm and an angle adjusting mechanism are arranged on the support frame, a laser is fixedly installed at the end of the electric telescopic arm, and the angle adjusting mechanism is used to adjust the processing angle of the laser; The ball expanding mechanism includes a housing, a plurality of positioning rods and an outer expanding component. The housing is rotatably connected in a bearing frame, a plurality of linear grooves are opened on the side of the housing close to the valve ball, the plurality of positioning rods are slidably connected in the corresponding linear grooves, and the outer expanding component is used to control the synchronous outward expansion of the plurality of positioning rods. By inserting the positioning rods into the hollow cylinder or the straight channel of the valve ball, the valve ball is then controlled to rotate at different angles.

[0007] Further, the outer expanding component includes a limiting plate, a fourth motor and an extension shaft. The limiting plate is rotatably connected in the housing, a plurality of arc grooves are opened on the side of the limiting plate, second sliders are fixedly connected to the sides of the plurality of positioning rods close to the limiting plate, and the plurality of second sliders are respectively slidably connected in the corresponding arc grooves. The fourth motor is fixedly connected to the end of the housing, and the extension shaft is fixedly connected between the output end of the fourth motor and the limiting plate.

[0008] Further, a first motor is fixedly connected to the bottom of the processing table, and the turntable is fixedly connected to the output end of the first motor.

[0009] Further, each set of displacement mechanisms includes a sliding seat, a ball screw, a screw sleeve and a second motor. The sliding seat and the second motor are both fixedly connected to the top of the turntable, the ball screw is rotatably connected in the sliding seat, the screw sleeve is slidably connected in the sliding seat, the screw sleeve is threadedly connected to the circumferential surface of the ball screw, the output end of the second motor is fixedly connected to the ball screw, and the support rod is fixedly connected to the top of the screw sleeve.

[0010] Further, a moving seat is installed on the top of the linear motor, an installation frame is fixedly connected to the top of the moving seat, a bearing frame is fixedly connected to the top of the installation frame, and the housing is rotatably connected in the bearing of the bearing frame.

[0011] Further, the driving mechanism includes a fifth motor, a third spur gear, and a fourth spur gear. The fifth motor is fixedly connected to the top of the mounting bracket. The third spur gear is fixedly connected to the output end of the fifth motor. The fourth spur gear is fixedly connected to the circumferential surface of the housing, and the fourth spur gear meshes with the third spur gear.

[0012] Further, the angle adjustment mechanism includes a third motor, a first spur gear, a second spur gear, an arc-shaped groove, a first slider, and an extension rod. The third motor is fixedly connected to one side of the support frame. The first spur gear is fixedly connected to the output end of the third motor. The second spur gear is rotatably connected to the other side. The first spur gear meshes with the second spur gear. The arc-shaped groove is provided at the top of the support frame. The first slider is slidably connected in the arc-shaped groove. The extension rod is fixedly connected between the first slider and the second spur gear. The electric telescopic arm is fixedly connected to the top of the first slider.

[0013] The technical effects and advantages of the present invention: 1. By providing a spherical support mechanism in the present invention to fix valve balls at different angles, it is beneficial to switch different rotation directions according to processing needs, and it can adapt to more models of valve balls. As the models of valve balls are different, it is easier to achieve dead-angle-free processing. Dead-angle-free processing can ensure the integrity of the sealing surface of the ball valve, avoid the problem of poor sealing caused by processing dead angles, which helps to improve the sealing performance of the ball valve and prevent fluid leakage. Its sealing surface can remain flat and smooth during use, reducing the problem of sealing performance degradation caused by friction and wear, which helps to extend the service life and maintenance cycle of the valve ball.

[0014] 2. By providing an angle adjustment mechanism in the present invention to adjust the processing angle of the laser, it is beneficial to better adapt to different shapes and sizes of valve balls by adjusting the angle of the laser, ensuring that the laser beam emitted by the laser can accurately irradiate the area to be repaired. A suitable angle helps the laser beam act more effectively on the surface of the valve ball, reducing energy loss, thereby improving the repair efficiency.

[0015] 3. By providing two sets of displacement mechanisms in the present invention, it is beneficial to flexibly adjust the distance between the two positioning shafts, thereby fixing valve balls of different models, with a wider application range, without the need to re-design the work station, reducing production preparation and costs. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 It is a front view of the present invention.

[0018] Figure 3 It is a schematic diagram of the structure after the valve ball is fixed in the present invention.

[0019] Figure 4 Schematic diagram of the adjustment mechanism of the present invention.

[0020] Figure 5 Schematic diagram of the turntable structure of the present invention.

[0021] Figure 6 Schematic diagram of the rotating mechanism of the present invention.

[0022] Figure 7 For the present invention Figure 7 Cross-sectional view.

[0023] Figure 8 Schematic diagram of the circular support mechanism of the present invention.

[0024] Reference numerals are: 1, processing table; 2, turntable; 201, first motor; 3, displacement mechanism; 301, sliding seat; 302, ball screw; 303, screw sleeve; 304, second motor; 4, support rod; 401, bearing seat; 402, positioning shaft; 403, hollow cylinder; 5, support frame; 501, electric telescopic arm; 6, angle adjustment mechanism; 601, third motor; 602, first straight gear; 603, second straight gear; 604, arc groove; 605, first slider; 606, extension rod; 7, linear motor; 701, mover seat; 702, mounting frame; 703, bearing frame; 8, circular support mechanism; 801, housing; 802, linear groove; 803, positioning rod; 804, second slider; 805, limiting plate; 806, arc groove; 807, extension shaft; 808, fourth motor; 9, drive mechanism; 901, fifth motor; 902, third straight gear; 903, fourth straight gear; 10, valve ball; 11, laser. Detailed implementation manners

[0025] Next, the technical solutions in the present invention will be clearly and completely described in conjunction with the drawings in the present invention. In addition, the forms of the respective structures described in the following embodiments are merely examples, and a processing and positioning device for laser repair of a ball valve part according to the present invention is not limited to the respective structures described in the following embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0026] Refer to Figures 1-8, the present invention provides a processing positioning device for laser repair of a ball valve component, which includes a processing table 1. A turntable 2 is rotatably arranged on the top of the processing table 1. Two sets of displacement mechanisms 3 are symmetrically arranged on the upper side of the turntable 2. Support rods 4 are arranged on the upper sides of the two sets of displacement mechanisms 3. Bearings 401 are fixedly connected to the upper ends of the two support rods 4. Positioning shafts 402 are rotatably connected to the closer sides of the two bearings 401. The displacement mechanism 3 clamps the valve ball 10 by controlling the displacement of the two positioning shafts 402. A hollow cylinder 403 is fixedly connected to the end of one of the positioning shafts 402. A linear motor 7 is fixedly connected to the top of the processing table 1. A circular support mechanism 8 and a driving mechanism 9 are arranged on the upper side of the linear motor 7. A support frame 5 is fixedly connected to the side of the processing table 1. An electric telescopic arm 501 and an angle adjustment mechanism 6 are arranged on the support frame 5. A laser 11 is fixedly installed at the end of the electric telescopic arm 501. The angle adjustment mechanism 6 is used to adjust the processing angle of the laser 11; The circular support mechanism 8 includes a housing 801, a plurality of positioning rods 803 and an external support assembly. The housing 801 is rotatably connected in a bearing frame 703. A plurality of linear slots 802 are opened on the side of the housing 801 close to the valve ball 10. The plurality of positioning rods 803 are slidably connected in the corresponding linear slots 802. The external support assembly is used to control the synchronous outward expansion of the plurality of positioning rods 803. By inserting the positioning rods 803 into the hollow cylinder 403 or the straight channel of the valve ball 10, the valve ball 10 is then controlled to rotate at different angles.

[0027] In this embodiment, it should be specifically noted that: The valve ball 10 is located above the turntable 2. A first motor 201 is fixedly connected to the bottom of the processing table 1, and the turntable 2 is fixedly connected to the output end of the first motor 201. By driving the turntable 2 to rotate with the first motor 201, the displacement mechanism 3 and the support rod 4 can be driven to rotate horizontally, and then the valve ball 10 can be driven to rotate horizontally. The displacement mechanism 3 is used to control the linear movement of the support rod 4, the bearing seat 401, and the positioning shaft 402. The two sets of displacement mechanisms 3 are symmetrically designed, and the distance between the two positioning shafts 402 can be flexibly adjusted. In the initial state, the valve ball 10 is clamped between the two positioning shafts 402. By designing the positioning shaft 402 with adjustable spacing, valve balls 10 of different models can be clamped, and the applicable range is wider. The laser 11 is located above the valve ball 10. The extended end of the electric telescopic arm 501 can be telescoped, and the processing position of the laser 11 can be linearly adjusted, expanding the processing range. The angle adjustment mechanism 6 can flexibly adjust the processing angle of the laser 11 within a certain angle range. The laser 11 is a device for laser cladding technology, and high-energy density laser beams are used for processing, which can achieve high-precision processing at the microscale, with an accuracy of up to several microns. By adjusting the angle of the laser 11, it can better adapt to the different shapes and sizes of the valve ball 10, ensuring that the laser beam emitted by the laser 11 can accurately irradiate the area to be repaired. A suitable angle helps the laser beam act more effectively on the surface of the valve ball 10, reducing energy loss, thereby improving the repair efficiency. The ball expanding mechanism 8 is used to control the rotation of the valve ball 10. Under the control of the fourth motor 808, several positioning rods 803 can expand synchronously. In the initial state, the positioning rods 803 are inserted into the hollow cylinder 403, and the hollow cylinder 403 is fixed by the outward expansion of the positioning rods 803. Then, the driving mechanism 9 is used to control the overall rotation of the ball expanding mechanism 8 to drive the hollow cylinder 403 to rotate. The hollow cylinder 403 drives the positioning shaft 402 to rotate, and finally drives the valve ball 10 to rotate, enabling the repair work to be carried out more comprehensively and accurately. The maintenance personnel can easily rotate the sphere to check the sealing performance and wear conditions at various angles. This comprehensive inspection helps to accurately judge the damage degree and repair requirements of the ball valve, thereby improving the repair accuracy. Rotating the sphere can also facilitate the maintenance personnel to quickly locate the specific position to be repaired, reducing ineffective operations and improving the repair efficiency.

[0028] The main difference between this embodiment and the prior art lies in that a ball expanding mechanism 8 is used to fix the inside of the valve ball 10 in this embodiment. Specifically: when the positioning shaft 402 clamps the valve ball 10 and rotates, although the processing area is enlarged, the two flat surfaces of the valve ball 10 are blocked. When it is necessary to process the two sides of the valve ball 10, first, the positioning rod 803 of the ball expanding mechanism 8 contracts, and then the mover seat 701 is controlled to move away from the valve ball 10, thereby driving the ball expanding mechanism 8 away from the valve ball 10, separating the positioning rod 803 from the hollow cylinder 403. Then, the output end of the first motor 201 drives the turntable 2 to rotate, making the through groove position of the valve ball 10 close to the ball expanding mechanism 8. Then, the mover seat 701 is controlled to move in the approaching direction, so that the positioning rod 803 is inserted into the through groove position of the valve ball 10, and the valve ball 10 is fixed by the outward expansion of the positioning rod 803. At this time, the displacement mechanism 3 is used to control the synchronous reverse movement of the support rod 4, the bearing seat 401, and the positioning shaft 402, so that the positioning shaft 402 moves away from the valve ball 10, providing a larger processing space for the valve ball 10. After the valve ball 10 is fixed by the positioning rod 803, the valve ball 10 can also be driven to rotate, realizing two rotation angles of the valve ball 10. Different rotation directions can be switched according to the processing requirements, and more models of valve balls 10 can be adapted. As the model of the valve ball 10 is different, the workstations of this solution can be flexibly adjusted without re-designing, reducing the processing time and cost. Moreover, after the valve ball 10 is fixed, the stability and position accuracy of the sphere during the processing can be ensured, making it easier to achieve dead-angle-free processing. Dead-angle-free processing can ensure that the sealing surface of the ball valve is intact, avoiding the problem of poor sealing caused by processing dead angles. This helps to improve the sealing performance of the ball valve and prevent fluid leakage. Its sealing surface can remain flat and smooth during use, reducing the problem of sealing performance degradation caused by friction and wear. This helps to extend the service life and maintenance cycle of the valve ball 10.

[0029] The above structure is the main structure of this embodiment, which solves the problem of dead angles in the processing of the valve ball 10. The control of the outward expansion of the positioning rod 803 by the fourth motor 808 is an existing structure. The specific structure and connection method of the linear motor 7 are not specifically described in this embodiment. In addition, the emission of laser by the laser 11 also belongs to the prior art. Therefore, this application is not refined and limited.

[0030] Referring to Figures 6-8 , the outer support assembly includes a limit plate 805, a fourth motor 808, and an extension shaft 807. The limit plate 805 is rotatably connected inside the housing 801. A plurality of arc grooves 806 are formed on the side of the limit plate 805. A second slider 804 is fixedly connected to one side of each of the plurality of positioning rods 803 close to the limit plate 805. The plurality of second sliders 804 are respectively slidably connected in the corresponding arc grooves 806. The fourth motor 808 is fixedly connected to the end of the housing 801. The extension shaft 807 is fixedly connected between the output end of the fourth motor 808 and the limit plate 805.

[0031] In this embodiment, it should be specifically noted that the extension shaft 807 and the limit plate 805 are fixed by bolts. The output end of the fourth motor 808 drives the extension shaft 807 to rotate, and then drives the limit plate 805 to rotate. Since the second slider 804 is in the arc groove 806, the second slider 804 and the positioning rod 803 are an integral structure, and the straight groove 802 limits the linear sliding of the positioning rod 803. When the limit plate 805 rotates, several positioning rods 803 expand or contract synchronously. After the positioning rod 803 is inserted into the hollow cylinder 403, the positioning rod 803 can fix the hollow cylinder 403 by expanding synchronously. At this time, the rotation of the positioning rod 803 can drive the hollow cylinder 403 to rotate, and then drive the valve ball 10 to rotate. Similarly, after the positioning rod 803 is inserted into the through groove of the valve ball 10, the positioning rod 803 can fix the valve ball 10 by expanding synchronously. At this time, the rotation of the positioning rod 803 can drive the valve ball 10 to rotate, realizing the control of the rotation of the valve ball 10 in different directions, effectively expanding the processing area and achieving the effect of processing without dead angles.

[0032] Refer to Figure 5 As shown in [reference figure], each set of displacement mechanisms 3 includes a sliding seat 301, a ball screw 302, a screw sleeve 303, and a second motor 304. The sliding seat 301 and the second motor 304 are both fixedly connected to the top of the turntable 2. The ball screw 302 is rotatably connected inside the sliding seat 301. The screw sleeve 303 is slidably connected inside the sliding seat 301. The screw sleeve 303 is threadedly connected to the circumferential surface of the ball screw 302. The output end of the second motor 304 is fixedly connected to the ball screw 302. The support rod 4 is fixedly connected to the top of the screw sleeve 303.

[0033] In this embodiment, it should be specifically noted that the displacement mechanism 3 is used to control the movement of the support rod 4. During operation, the output end of the second motor 304 drives the ball screw 302 to rotate. The ball screw 302 drives the screw sleeve 303 to move linearly, and then drives the support rod 4 to move. Two sets of displacement mechanisms 3 control the movement of two support rods 4, and can flexibly adjust the distance between the two positioning shafts 402, so as to fix valve balls 10 of different models. The structure is simple and easy to operate.

[0034] Refer to Figure 6 As shown in [reference figure], a mover seat 701 is installed on the top of the linear motor 7. A mounting frame 702 is fixedly connected to the top of the mover seat 701. A bearing frame 703 is fixedly connected to the top of the mounting frame 702. The outer shell 801 is rotatably connected to the bearing in the bearing frame 703.

[0035] In this embodiment, it should be specifically noted that the linear motor 7 is a linear motor, which is used to drive the mover seat 701 to move linearly, and then drive the bearing frame 703 to move, and then drive the entire driving mechanism 9 and the circle-expanding mechanism 8 to move, flexibly moving the position of the positioning rod 803. The bearing frame 703 is used to support the overall rotation of the circle-expanding mechanism 8.

[0036] Referring to Figure 6 , the driving mechanism 9 includes a fifth motor 901, a third spur gear 902 and a fourth spur gear 903. The fifth motor 901 is fixedly connected to the top of the mounting bracket 702, the third spur gear 902 is fixedly connected to the output end of the fifth motor 901, the fourth spur gear 903 is fixedly connected to the circumferential surface of the housing 801, and the fourth spur gear 903 meshes with the third spur gear 902.

[0037] In this embodiment, it should be specifically noted that: the diameter of the third spur gear 902 is smaller than that of the fourth spur gear 903, and the housing 801 can rotate under the support of the bearing bracket 703. During operation, the third spur gear 902 is driven to rotate by the output end of the fifth motor 901. The third spur gear 902 drives the fourth spur gear 903 to rotate, and then drives the housing 801 to rotate, thereby driving the entire circular support mechanism 8 to rotate. The positioning rod 803 rotates accordingly, and finally drives the valve ball 10 to rotate, achieving the function of driving the valve ball 10 to rotate.

[0038] Referring to Figure 4 , the angle adjustment mechanism 6 includes a third motor 601, a first spur gear 602, a second spur gear 603, an arc-shaped groove 604, a first slider 605 and an extension rod 606. The third motor 601 is fixedly connected to one side of the support frame 5, the first spur gear 602 is fixedly connected to the output end of the third motor 601, the second spur gear 603 is rotatably connected to the other side, the first spur gear 602 meshes with the second spur gear 603, the arc-shaped groove 604 is provided at the top of the support frame 5, the first slider 605 is slidably connected in the arc-shaped groove 604, and the extension rod 606 is fixedly connected between the first slider 605 and the second spur gear 603. The electric telescopic arm 501 is fixedly connected to the top of the first slider 605.

[0039] In this embodiment, it should be specifically noted that: the arc-shaped groove 604 is used to limit the sliding of the first slider 605. The diameter of the second spur gear 603 is larger than that of the first spur gear 602. During operation, the output end of the third motor 601 drives the first spur gear 602 to rotate. The first spur gear 602 drives the second spur gear 603 to rotate. The second spur gear 603 drives the extension rod 606 to rotate, and then drives the first slider 605 to slide within the arc-shaped groove 604. The electric telescopic arm 501 is fixed to the first slider 605 through bolts. The electric telescopic arm 501 deflects following the first slider 605, so as to be able to adjust the angle of the laser 11. The rotation range of the gear of the second spur gear 603 is between 0 - 150 degrees, which limits the rotation range of the laser 11, ensures that the laser 11 emits laser within a safe range, and prevents accidental injury to the staff. The design of the adjustable angle of the laser 11 can better adapt to different shapes and sizes of the valve ball 10, ensure that the laser beam can accurately irradiate the area to be repaired. The appropriate angle helps the laser beam to act more effectively on the surface of the valve ball 10, reduce energy loss, and thus improve the repair efficiency.

[0040] The working principle of the present invention: The main problems solved by this embodiment are: by using the design that the valve ball 10 can switch the rotation direction, the machining surface is expanded, and the problem of dead corners in the machining of the valve ball 10 is solved. By using two sets of displacement mechanisms 3 to adjust the distance between the positioning shafts 402, valve balls 10 of different models can be fixed, and the problem that different models and specifications require different workstations is solved. By using the angle adjustment mechanism 6 to adjust the machining angle of the laser 11, it can better adapt to different shapes and sizes of the valve ball 10, and ensure that the laser beam emitted by the laser 11 can accurately irradiate the area to be repaired The specific steps are as follows: Place the valve ball 10 to be processed between two positioning shafts 402. Then, drive the ball screw 302 to rotate through the output end of the second motor 304. The ball screw 302 drives the screw sleeve 303 to move, causing the two support rods 4, the bearing block 401, and the positioning shafts 402 to approach each other. At this time, the valve ball 10 is fixed between the two positioning shafts 402. Then, control the mover seat 701 to move towards the direction of the hollow cylinder 403. The circular support mechanism 8 follows the mover seat 701 to move as a whole towards the direction of the hollow cylinder 403, causing the positioning rod 803 to insert into the hollow cylinder 403. At this time, drive the extension shaft 807 to rotate through the output end of the fourth motor 808. The extension shaft 807 drives the limit plate 805 to rotate. Under the double limit of the arc groove 806 and the straight groove 802, several positioning rods 803 and the second slider 804 gradually expand outwards synchronously, thereby fixedly supporting the inner wall of the hollow cylinder 403. At this time, the third spur gear 902 can be driven to rotate through the output end of the fifth motor 901. The third spur gear 902 drives the fourth spur gear 903 to rotate. The fourth spur gear 903 drives the circular support mechanism 8 to rotate as a whole, and then drives the hollow cylinder 403, the positioning shafts 402, and the valve ball 10 to rotate. After the valve ball 10 rotates, start the laser 11 to perform laser processing operations; When the laser 11 is working, drive the first spur gear 602 to rotate through the output end of the third motor 601. The first spur gear 602 drives the second spur gear 603 to rotate. The second spur gear 603 drives the first slider 605 to deflect slightly. The first slider 605 drives the electric telescopic arm 501 to deflect, and finally drives the laser 11 to deflect, which can flexibly adjust the processing angle of the laser 11 to expand the processing range. At the same time, the laser 11 can be controlled to extend and retract through the electric telescopic arm 501, linearly adjusting the processing position of the laser 11 to further expand the processing range and ensure that there are no dead corners in the processing; When it is necessary to switch the processing position of the valve ball 10, first control the positioning rod 803 to separate from the hollow cylinder 403. Then, drive the turntable 2 to rotate through the output end of the first motor 201, aligning the through groove direction of the valve ball 10 with the positioning rod 803. Then, after controlling the positioning rod 803 to insert into the through groove of the valve ball 10, the positioning rod 803 expands outwards synchronously to fix the valve ball 10. At this time, the rotation of the positioning rod 803 can drive the valve ball 10 to rotate, realizing the rotation of the valve ball 10 in different directions, effectively expanding the processing area and achieving the effect of processing without dead corners.

[0041] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A processing positioning device for laser repair of a ball valve part, comprising a processing table (1), characterized in that: A turntable (2) is rotatably arranged on the top of the processing table (1). Two sets of displacement mechanisms (3) are symmetrically arranged on the upper side of the turntable (2). Support rods (4) are arranged on the upper sides of the two sets of displacement mechanisms (3). Bearing seats (401) are fixedly connected to the upper ends of the two support rods (4). Positioning shafts (402) are rotatably connected to the closer sides of the two bearing seats (401). The displacement mechanism (3) clamps the valve ball (10) by controlling the displacement of the two positioning shafts (402). A hollow cylinder (403) is fixedly connected to the end of one of the positioning shafts (402). A linear motor (7) is fixedly connected to the top of the processing table (1). A ball expanding mechanism (8) and a driving mechanism (9) are arranged on the upper side of the linear motor (7). A support frame (5) is fixedly connected to the side of the processing table (1). An electric telescopic arm (501) and an angle adjusting mechanism (6) are arranged on the support frame (5). A fixed laser (11) is installed at the end of the electric telescopic arm (501). The angle adjusting mechanism (6) is used to adjust the processing angle of the laser (11). The ball expanding mechanism (8) includes a housing (801), a plurality of positioning rods (803) and an outer expanding assembly. The housing (801) is rotatably connected in a bearing frame (703). A plurality of linear grooves (802) are formed on the side of the housing (801) close to the valve ball (10). The plurality of positioning rods (803) are slidably connected in the corresponding linear grooves (802). The outer expanding assembly is used to control the synchronous outward expansion of the plurality of positioning rods (803). By inserting the plurality of positioning rods (803) into the hollow cylinder (403) or the straight channel of the valve ball (10), the valve ball (10) is then controlled to rotate at different angles.

2. The machining positioning device for laser repair of a ball valve part according to claim 1, characterized in that: The outer expanding assembly includes a limiting plate (805), a fourth motor (808) and an extension shaft (807). The limiting plate (805) is rotatably connected in the housing (801). A plurality of arc grooves (806) are formed on the side of the limiting plate (805). Second sliders (804) are fixedly connected to the sides of the plurality of positioning rods (803) close to the limiting plate (805). The plurality of second sliders (804) are respectively slidably connected in the corresponding arc grooves (806). The fourth motor (808) is fixedly connected to the end of the housing (801). The extension shaft (807) is fixedly connected between the output end of the fourth motor (808) and the limiting plate (805).

3. The machining positioning device for laser repair of a ball valve part according to claim 1, characterized in that: A first motor (201) is fixedly connected to the bottom of the processing table (1). The turntable (2) is fixedly connected to the output end of the first motor (201).

4. The machining positioning device for laser repair of a ball valve part according to claim 1, characterized in that: Each of the displacement mechanisms (3) includes a sliding seat (301), a ball screw (302), a screw sleeve (303), and a second motor (304). The sliding seat (301) and the second motor (304) are both fixedly connected to the top of the turntable (2). The ball screw (302) is rotatably connected within the sliding seat (301). The screw sleeve (303) is slidably connected within the sliding seat (301). The screw sleeve (303) is threadedly connected to the circumferential surface of the ball screw (302). The output end of the second motor (304) is fixedly connected to the ball screw (302). The support rod (4) is fixedly connected to the top of the screw sleeve (303).

5. The machining positioning device for laser repair of a ball valve part according to claim 1, characterized in that: A mover seat (701) is installed on the top of the linear motor (7). An installation frame (702) is fixedly connected to the top of the mover seat (701). A bearing frame (703) is fixedly connected to the top of the installation frame (702). The outer shell (801) is rotatably connected within the bearing of the bearing frame (703).

6. The machining positioning device for laser repair of a ball valve part according to claim 1, characterized in that: The drive mechanism (9) includes a fifth motor (901), a third spur gear (902), and a fourth spur gear (903). The fifth motor (901) is fixedly connected to the top of the installation frame (702). The third spur gear (902) is fixedly connected to the output end of the fifth motor (901). The fourth spur gear (903) is fixedly connected to the circumferential surface of the outer shell (801). The fourth spur gear (903) meshes with the third spur gear (902).

7. A processing positioning device for laser repair of a ball valve part according to claim 1, characterized in that: The angle adjustment mechanism (6) includes a third motor (601), a first spur gear (602), a second spur gear (603), an arc-shaped groove (604), a first slider (605), and an extension rod (606). The third motor (601) is fixedly connected to one side of the support frame (5). The first spur gear (602) is fixedly connected to the output end of the third motor (601). The second spur gear (603) is rotatably connected to the other side. The first spur gear (602) meshes with the second spur gear (603). The arc-shaped groove (604) is provided at the top end of the support frame (5). The first slider (605) is slidably connected within the arc-shaped groove (604). The extension rod (606) is fixedly connected between the first slider (605) and the second spur gear (603). The electric telescopic arm (501) is fixedly connected to the top of the first slider (605).

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