Intermittent rotating device for shot blasting of pipe fitting
By designing an intermittent rotating shot blasting device for pipe fittings, the problems of uneven shot blasting and low production efficiency were solved, achieving uniform surface treatment of pipe fittings and improving production efficiency, while reducing energy consumption and equipment wear.
Patent Information
- Application Number
- CN202520373292.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-05
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-05
AI Technical Summary
Existing shot blasting equipment for pipe fittings suffers from uneven shot blasting and low production efficiency during the process. In particular, it is difficult to achieve uniform processing for long or complex-shaped pipe fittings, and the fixed loading and unloading process is time-consuming.
An intermittent rotating device for shot blasting pipe fittings was designed. Through the cooperation of a turntable, chuck, ratchet and cylinder, the pipe fittings are rotated intermittently during the shot blasting process. Combined with a modular clamping mechanism, it is ensured that each surface is uniformly treated by shot blasting.
It significantly improves the uniformity of shot blasting, reduces the probability of secondary processing, shortens the production cycle, increases production efficiency, and reduces energy consumption and equipment wear.
Smart Images
Figure CN223933381U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of auxiliary workpiece equipment for shot blasting machines, specifically an intermittent rotating device for shot blasting pipe fittings. Background Technology
[0002] Shot blasting is a common surface treatment process in the manufacturing of pipe fittings, used to remove rust, scale, impurities, and other defects from the surface of the fittings to improve their surface quality and subsequent processing performance. Existing shot blasting equipment typically fixes the pipe fittings in the blasting chamber, allowing the machine to perform comprehensive shot blasting. However, this fixed-position method has limitations: firstly, some parts of the fitting may not receive sufficient blasting due to angle issues, resulting in uneven blasting effects; secondly, for long or complex-shaped fittings, fixed-position shot blasting struggles to achieve uniform treatment of the entire fitting. Furthermore, the loading and unloading of fittings during fixed-position shot blasting takes considerable time, reducing production efficiency. Utility Model Content
[0003] This utility model aims to provide an intermittent rotating device for shot blasting pipe fittings. By intermittently rotating the pipe fittings during the shot blasting process, the uniformity of shot blasting is improved, thereby increasing production efficiency. To achieve the above objective, this application provides the following technical solution: an intermittent rotating device for shot blasting pipe fittings, comprising:
[0004] A fixed plate is connected to a shot blasting machine. A bearing seat is provided on the fixed plate. A rotating shaft is provided inside the bearing seat. A turntable is connected to one end of the rotating shaft. A chuck and a ratchet are provided at the bottom of the turntable. The chuck and the ratchet are both sleeved on the rotating shaft. The turntable, the chuck, and the ratchet all rotate with the rotating shaft.
[0005] A sleeve is fitted onto the rotating shaft, and a connecting plate is fixedly connected to its side wall. A pawl is hinged to the middle of the connecting plate, and the pawl engages with the ratchet. One end of the connecting plate is hinged to the piston rod of the first cylinder, and the first cylinder is fixed to the fixed plate through an auxiliary plate.
[0006] A spring, one end of which is connected to the connecting plate and the other end of which is connected to the pawl, provides a force to the other end of the pawl to always be in contact with the ratchet. The first cylinder drives the pawl to rotate the ratchet.
[0007] The chuck has its middle part hinged to the fixed plate, one end of which is hinged to the piston rod of the second cylinder, and the other end is provided with a protrusion corresponding to the groove provided around the chuck. The second cylinder drives the protrusion on the chuck to engage or disengage from the groove. The cooperation of the first cylinder and the second cylinder together realizes the intermittent rotation of the turntable.
[0008] A clamping mechanism, wherein the clamp is disposed on the turntable, is used to clamp the pipe fitting.
[0009] In a preferred embodiment of this technical solution, the clamping mechanism includes a mounting plate, a rotary cylinder, a rotating disk, grippers, a guide rail, a slider, and a cylindrical pin. The mounting plate is double-layered, with the rotary cylinder installed inside. The rotating disk is connected to the output shaft of the rotary cylinder. The rotating disk has multiple arc-shaped grooves, with different distances between the two ends of each groove and the center, forming an arc-shaped structure extending from the inside out. The guide rail is evenly arranged along the circumference of the rotating disk. The bottom of the gripper is connected to the slider, which can slide along the guide rail. The cylindrical pin is located at the bottom of the gripper and within the arc-shaped groove, allowing the gripper to slide within the groove to achieve radial movement.
[0010] In a preferred embodiment of this technical solution, multiple clamping mechanisms are evenly arranged along the circumference of the turntable.
[0011] In a preferred embodiment of this technical solution, an L-shaped plate is also included, one end of which is connected to the fixed plate, and the other end is provided with a roller, which contacts the turntable.
[0012] In a preferred embodiment of this technical solution, multiple L-shaped plates are evenly arranged circumferentially along the axis of the bearing seat.
[0013] In a preferred embodiment, the present technical solution further includes a washer disposed at the bottom of the turntable and in contact with the roller. The washer is matched with the movement trajectory of the roller to ensure that the roller always maintains contact with the washer during movement.
[0014] In a preferred embodiment of this technical solution, the turntable, the chuck, and the ratchet are all coaxially arranged.
[0015] In a preferred embodiment of this technical solution, the claw is L-shaped, with its horizontal end connected to the slider and its vertical end located inside the tube to be shot blasted.
[0016] In a preferred embodiment, this technical solution further includes a guide ramp, which is disposed at the vertical end of the chuck.
[0017] Compared with the prior art, the beneficial effects of this application are:
[0018] This device significantly improves the uniformity of shot blasting by intermittently rotating the pipe fittings during the shot blasting process. The intermittent rotation design ensures that all surfaces of the pipe fittings receive uniform shot blasting treatment, thereby improving the shot blasting quality. This intermittent rotation mechanism not only improves shot blasting uniformity but also significantly increases production efficiency. Due to the uniform shot blasting, the probability of secondary processing or rework is reduced, shortening the production cycle. Furthermore, the intermittent rotation design makes the shot blasting process more efficient, reducing energy consumption and equipment wear, further improving production efficiency. This device adopts a modular design, with a simple structure that is easy to install and maintain. The rational layout and connection of components such as the fixing plate, bearing seat, rotating shaft, turntable, chuck, ratchet, sleeve, connecting plate, pawl, and cylinder make the entire device easy to operate, reducing the labor intensity and technical requirements for operators. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the clamping state of an intermittent rotating device for shot blasting of pipe fittings as proposed in an embodiment of this application;
[0020] Figure 2 This is a three-dimensional schematic diagram of an intermittent rotating shot blasting device for pipe fittings as proposed in an embodiment of this application;
[0021] Figure 3 This is a schematic diagram of the bottom part of a pipe shot blasting intermittent rotating device proposed in an embodiment of this application;
[0022] Figure 4 This is a schematic diagram of the bottom part of a pipe fitting shot blasting intermittent rotating device proposed in the embodiments of this application;
[0023] Figure 5 This is a three-dimensional schematic diagram of the clamping mechanism;
[0024] In the diagram: 1. Fixed plate; 2. Bearing seat; 3. Rotating shaft; 4. Turntable; 5. Chuck; 6. Ratchet; 7. Sleeve; 8. Connecting plate; 9. Pawl; 10. First cylinder; 11. Auxiliary plate; 12. Spring; 13. Pawl; 14. Second cylinder; 15. Groove; 16. Clamping mechanism; 17. Mounting plate; 18. Rotary cylinder; 19. Rotary disk; 20. Clamp; 21. Guide rail; 22. Slider; 23. Cylindrical pin; 24. Arc groove; 25. L-shaped plate; 26. Roller; 27. Washer; 28. Guide slope. Detailed Implementation
[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0026] It should be noted that in the description of this application, the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0027] Furthermore, it should be understood that, for ease of description, the dimensions of the various components shown in the accompanying drawings are not drawn to actual scale; for example, the thickness or width of some layers may be exaggerated relative to other layers.
[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined or described in one figure, it will not need to be discussed or described in detail in the description of the subsequent figures.
[0029] In order to solve the technical problems in the background art, such as Figure 1-5 As shown, this application provides a technical solution: an intermittent rotating device for shot blasting pipe fittings, characterized as follows:
[0030] The fixed plate 1 is the basic component of the entire device, used to connect to the main body of the shot blasting machine. The fixed plate 1 is preferably made of high-strength steel plate to ensure the stability and durability of the device. The bearing seat 2 is fixed to the fixed plate 1 to support and fix the rotating shaft 3. The bearing seat 2 contains a high-performance bearing to reduce friction during the rotation of the rotating shaft 3. The rotating shaft 3 passes through the bearing seat 2, and one end is connected to a turntable 4. The rotating shaft 3 is preferably made of high-strength alloy steel to withstand various stresses during rotation. The turntable 4 has a mounting hole in its center that mates with the rotating shaft 3, thus fixing it to one end of the rotating shaft 3. A chuck 5 and a ratchet 6 are located at its bottom. The turntable 4 is preferably made of wear-resistant material to extend its service life. The chuck 5 is fitted onto the rotating shaft 3, and has multiple grooves 15 around its circumference for engaging with the protrusions of the pawl 13 to achieve intermittent rotation of the turntable 4. The ratchet 6 is fitted onto the rotating shaft 3 and meshes with the pawl 9 to control the rotation angle of the turntable 4. A sleeve 7 is fitted onto the rotating shaft 3, and a connecting plate 8 is fixedly connected to its side wall. The sleeve 7 is positioned between the bearing seat 2 and the turntable 4 on the rotating shaft 3, and is linked to the rotating shaft 3 via a spline. A pawl 9 is hinged to the middle of the connecting plate 8, with one end hinged to the piston rod of the first cylinder 10. The connecting plate 8 is fixedly connected to the sleeve 7 by bolts or welding to ensure accurate positioning and a secure connection. The pawl 9 meshes with the ratchet 6, driving the ratchet 6 to rotate via the first cylinder 10. One end of the pawl 9 has teeth for meshing with the tooth grooves of the ratchet 6, and the middle of the pawl 9 is hinged within the hinge hole in the middle of the connecting plate 8. The first cylinder 10 is fixed to the fixed plate 1 via an auxiliary plate 11 and is used to drive the pawl 9 to rotate the ratchet 6. The cylinder diameter and stroke of the first cylinder 10 are selected according to actual needs to ensure sufficient driving force. The first cylinder 10 is fixedly connected to the auxiliary plate 11 by bolts or welding. The piston rod is connected to the connecting plate 8 by hinge, ensuring that the connecting plate 8 can swing through the extension and retraction of the piston rod. The spring 12 is helical, with both ends connected to the connecting plate 8 and the pawl 9 by hooks or bolts, respectively, providing the pawl 9 with a force that keeps it in constant contact with the ratchet 6. The middle of the pawl 13 is hinged to the fixed plate 1, one end of which is hinged to the piston rod of the second cylinder 14, and the other end is provided with a protrusion corresponding to the groove 15 on the chuck 5. The second cylinder 14 is used to drive the protrusion on the pawl 13 to engage or disengage from the groove 15 on the chuck 5. The second cylinder 14 is fixedly connected to the fixed plate 1 by bolts or welding, and the piston rod is connected to the pawl 13 by hinge, ensuring that the pawl 13 can swing through the extension and retraction of the piston rod. The clamping mechanism 16 is set on the turntable 4 and is used to clamp the pipe fittings. The structure of the clamping mechanism 16 can be designed according to the shape and size of the pipe fittings to ensure the stability and reliability of the clamping.
[0031] In use, under the action of spring 12, pawl 9 always maintains contact with the tooth groove of ratchet 6. When the piston rod of the first cylinder 10 extends, it pushes pawl 9 through connecting plate 8, causing the tooth end of pawl 9 to push ratchet 6 to rotate a certain angle. When the piston rod of the first cylinder 10 retracts, pawl 9 automatically returns to its original position under the action of spring 12, ready for the next push. By controlling the operating frequency and stroke of the first cylinder 10, precise control of the intermittent rotation of turntable 4 can be achieved. The locking mechanism composed of pawl 13 and chuck 5 is used to control the stop and start of turntable 4. When the protrusion on pawl 13 is embedded in the groove 15 of chuck 5, turntable 4 is locked in a fixed position and cannot rotate; when the protrusion on pawl 13 is pulled out of the groove 15, turntable 4 is unlocked and can continue to rotate under the drive of the ratchet mechanism. The position of pawl 13 is controlled by the action of the second cylinder 14 to realize the locking and releasing function of turntable 4. The clamping mechanism 16 is mounted on the turntable 4 to securely clamp the pipe fittings to be shot blasted. The clamping mechanism 16 can be adjusted according to the shape and size of the pipe fittings to ensure they are stably fixed on the turntable 4 during shot blasting, preventing loosening of the fittings from affecting the shot blasting effect. The design of the clamping mechanism 16 improves the versatility and applicability of the device, enabling it to adapt to pipe fittings of different specifications.
[0032] Furthermore, the clamping mechanism 16 includes a mounting plate 17, a rotary cylinder 18, a rotating disk 19, grippers 20, a guide rail 21, a slider 22, and a cylindrical pin 23. The mounting plate 17 has a double-layer structure, consisting of two parallel metal plates connected in the middle to form an installation space for accommodating the rotary cylinder 18. The mounting plate 17 is fixed to the upper surface of the rotating disk 4, and its plane is parallel to the rotating disk 4. The mounting plate 17 serves as the basic support component of the clamping mechanism 16, used for mounting and fixing the rotary cylinder 18 and other related components. The rotary cylinder 18 is a standard pneumatic rotary actuator with an output shaft, capable of achieving precise angular rotation. The rotary cylinder 18 is mounted between the double layers of the mounting plate 17, and its output shaft is perpendicular to the plane of the mounting plate 17. The rotating disk 19 is a circular metal disk with a central mounting hole that mates with the output shaft of the rotary cylinder 18, and multiple evenly distributed arc-shaped grooves 24 on its outer periphery. Driven by the rotary cylinder 18, the rotating disk 19 rotates, guiding the gripper 20 to move radially through the arc-shaped groove 24, thereby achieving the clamping and releasing action of the pipe fitting. The gripper 20 is an L-shaped metal piece, with a clamping surface for holding the pipe fitting at one end and a mounting position for the slider 22 and the cylindrical pin 23 at the other end. The gripper 20 is mounted on the guide rail 21 via the slider 22, and the cylindrical pin 23 connected to its bottom is located in the arc-shaped groove 24 of the rotating disk 19. The cylindrical pin 23 is inserted into the arc-shaped groove 24 of the rotating disk 19 and can slide within the arc-shaped groove 24, thereby guiding the radial movement of the gripper 20 and ensuring the accuracy and stability of the clamping action. The guide rail 21 is a straight track, evenly arranged along the circumference of the rotating disk 19, used to guide the sliding of the slider 22. The slider 22 is a rectangular metal block with a groove at the bottom that mates with the guide rail 21 and a mounting hole at the top that connects to the gripper 20. The slider 22 slides along the guide rail 21 via its groove, driving the gripper 20 to move radially, thereby achieving the clamping and releasing action of the pipe fitting. The cylindrical pin 23 is a cylindrical metal pin used to engage with the arc-shaped groove 24 of the rotating disk 19. The arc-shaped groove 24 consists of multiple evenly distributed arc-shaped grooves on the rotating disk 19, with different distances from the center at both ends, forming an arc-shaped structure extending from the inside out. The arc-shaped groove 24 guides the sliding of the cylindrical pin 23, achieving the radial movement of the gripper 20, thereby achieving the clamping and releasing action of the pipe fitting. The design of the arc-shaped groove 24 ensures that the gripper 20 can move radially smoothly during rotation, improving the stability and reliability of the clamping.
[0033] It should be noted that the clamping mechanism 16 is modularly designed, forming independent clamping units. Each clamping unit includes a mounting plate 17, a rotary cylinder 18, a rotating disk 19, grippers 20, a guide rail 21, a slider 22, and a cylindrical pin 23. These clamping units are evenly distributed along the circumference of the turntable 4, forming a complete clamping system. Each clamping unit achieves radial movement of the grippers 20 through the independent action of its rotary cylinder 18, thereby completing the clamping and releasing operations of the pipe fitting. The coordinated operation of multiple clamping units ensures that the pipe fitting remains stable throughout the shot blasting process, avoiding loosening or displacement of the pipe fitting due to insufficient or uneven clamping force, significantly improving the shot blasting effect and production efficiency.
[0034] Furthermore, the L-shaped plate 25 is an L-shaped metal plate composed of a vertical section and a horizontal section, forming an overall L shape. One end of the horizontal section of the L-shaped plate 25 is fixed to the fixed plate 1, and the other end of the vertical section is equipped with a roller 26. The horizontal section of the L-shaped plate 25 is fixed to the fixed plate 1 by bolts or welding to ensure accurate positioning and a firm connection. The other end of the vertical section is equipped with the roller 26 via a bearing or bushing, allowing the roller 26 to rotate freely. The L-shaped plate 25 serves as a support and guide component, contacting the turntable 4 through the roller 26 in its vertical section, providing support and rolling guidance, reducing friction on the turntable 4 during rotation, and improving the smoothness of the device's operation. The roller 26 is a cylindrical metal wheel with a smooth outer surface, capable of free rotation.
[0035] It should be noted that multiple L-shaped plates 25 are evenly arranged around the axis of the bearing housing 2, forming a stable support structure. The horizontal section of each L-shaped plate 25 is fixed to the fixed plate 1 by bolts or welding, ensuring accurate positioning and a firm connection. Through the even distribution of multiple L-shaped plates 25 and rollers 26, the device can operate more smoothly, reducing energy consumption and component wear caused by friction.
[0036] It is important to note that washer 27 is a ring-shaped metal part with an outer circumference designed to match the movement trajectory of roller 26, ensuring smooth contact between roller 26 and washer 27 during movement. Washer 27 is installed at the bottom of turntable 4, between turntable 4 and roller 26, ensuring that roller 26 remains in contact with washer 27 throughout its movement. Washer 27 is fixed to the bottom of turntable 4 by bolts or welding, ensuring accurate positioning and a secure connection. The design of washer 27 ensures that roller 26 maintains contact with washer 27 throughout its movement, reducing direct friction between roller 26 and turntable 4, and improving the operational stability and lifespan of the device.
[0037] It is worth noting that the turntable 4, chuck 5, and ratchet 6 are all coaxially arranged, ensuring that they maintain synchronous movement during rotation, thus improving the operational stability and accuracy of the device. This coaxial arrangement makes the entire device more compact, reducing its size and complexity, and facilitating installation and maintenance.
[0038] It is worth noting that the jaw 13 is designed with an L-shaped structure, consisting of a horizontal end and a vertical end. This structure allows the jaw 13 to simultaneously achieve radial movement and clamping of the pipe fitting. The horizontal end connects to the slider 22, ensuring that the jaw 13 can slide along the guide rail 21 to achieve radial movement. The vertical end is designed to insert into the inner hole of the pipe fitting to be shot blasted, ensuring the pipe fitting remains stable during clamping and preventing loosening or displacement due to insufficient clamping force. The L-shaped jaw 13 design allows it to be inserted into the inner hole of the pipe fitting through its vertical end, achieving stable clamping of the pipe fitting and preventing loosening or displacement due to insufficient clamping force. The L-shaped jaw 13 design can adapt to pipe fittings of different diameters and shapes, improving the versatility and applicability of the device.
[0039] It should be noted that a guide ramp 28 is also included. The guide ramp 28 is disposed at the vertical end of the jaw 13. The inclination angle of the guide ramp 28 is designed to facilitate the smooth insertion and extraction of the jaw 13 into the inner hole of the pipe to be shot blasted, so as to improve the efficiency and reliability of clamping and releasing the pipe.
[0040] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An intermittent rotating device for shot blasting pipe fittings, characterized in that, include: A fixed plate (1) is connected to a shot blasting machine. A bearing seat (2) is provided on the fixed plate (1). A rotating shaft (3) is provided inside the bearing seat (2). A turntable (4) is connected to one end of the rotating shaft (3). A chuck (5) and a ratchet (6) are provided at the bottom of the turntable (4). The chuck (5) and the ratchet (6) are both sleeved on the rotating shaft (3). The turntable (4), the chuck (5) and the ratchet (6) all rotate with the rotating shaft (3). Sleeve (7), sleeve (7) is fitted on the rotating shaft (3), and a connecting plate (8) is fixedly connected to its side wall. A pawl (9) is hinged in the middle of the connecting plate (8), and the pawl (9) meshes with the ratchet (6). One end of the connecting plate (8) is hinged to the piston rod of the first cylinder (10), and the first cylinder (10) is fixed to the fixed plate (1) through the auxiliary plate (11). A spring (12) is connected at one end to the connecting plate (8) and at the other end to the pawl (9), providing a force to the other end of the pawl (9) that is always in contact with the ratchet (6). The first cylinder (10) drives the pawl (9) to rotate the ratchet (6). The chuck (13) is hinged to the fixed plate (1) at its middle part. One end of the chuck (13) is hinged to the piston rod of the second cylinder (14), and the other end is provided with a protrusion corresponding to the groove (15) provided around the chuck (5). The second cylinder (14) drives the protrusion on the chuck (13) to insert into or pull out of the groove (15). The cooperation of the first cylinder (10) and the second cylinder (14) together realizes the intermittent rotation of the turntable (4). A clamping mechanism (16) is provided on the turntable (4) for clamping pipe fittings.
2. The intermittent rotating device for shot blasting pipe fittings according to claim 1, characterized in that, The clamping mechanism (16) includes a mounting plate (17), a rotary cylinder (18), a rotating disk (19), grippers (20), a guide rail (21), a slider (22), and a cylindrical pin (23). The mounting plate (17) is double-layered, and the rotary cylinder (18) is installed inside it. The rotating disk (19) is connected to the output shaft of the rotary cylinder (18). The rotating disk (19) is provided with multiple arc-shaped grooves (24), and the distance between the two ends of the arc-shaped grooves (24) and the center of the circle is... The structure is different and has an arc shape extending from the inside to the outside; the guide rail (21) is evenly arranged around the circumference of the rotating disk (19); the bottom of the gripper (20) is connected to the slider (22); the slider (22) can slide along the guide rail (21); the cylindrical pin (23) is set at the bottom of the gripper (20) and is located in the arc groove (24); the cylindrical pin (23) can slide in the arc groove (24) to realize the radial movement of the gripper (20).
3. The intermittent rotating device for shot blasting pipe fittings according to claim 2, characterized in that, Multiple clamping mechanisms (16) are evenly arranged along the circumference of the turntable (4).
4. The intermittent rotating device for shot blasting pipe fittings according to claim 3, characterized in that, It also includes an L-shaped plate (25), one end of which is connected to the fixed plate (1), and the other end is provided with a roller (26), which contacts the turntable (4).
5. The intermittent rotating device for shot blasting pipe fittings according to claim 4, characterized in that, Multiple L-shaped plates (25) are evenly arranged around the axis of the bearing seat (2).
6. The intermittent rotating device for shot blasting pipe fittings according to claim 5, characterized in that, It also includes a washer (27), which is disposed at the bottom of the turntable (4) and in contact with the roller (26). The washer (27) matches the movement trajectory of the roller (26) to ensure that the roller (26) always remains in contact with the washer (27) during the movement.
7. The intermittent rotating device for shot blasting pipe fittings according to claim 1, characterized in that, The turntable (4), the chuck (5), and the ratchet (6) are all coaxially arranged.
8. The intermittent rotating device for shot blasting pipe fittings according to claim 2, characterized in that, The claw (13) is L-shaped, with its horizontal end connected to the slider (22) and its vertical end located inside the tube to be shot blasted.
9. The intermittent rotating device for shot blasting pipe fittings according to claim 1, characterized in that, It also includes a guide ramp (28), which is disposed at the vertical end of the claw (13).