Outer wall grinding device for seamless steel tube piercing plug

Abstract

The utility model relates to the technical field of grinding devices, and discloses an outer wall grinding device for a seamless steel tube piercing plug, which comprises a base, the top of the base is rotatably connected with a placing disc, the piercing plug is placed on the top of the placing disc, and the periphery of the top of the placing disc is slidably connected with clamping blocks. Sliding blocks are fixedly connected to the bottoms of the clamping blocks, connecting blocks are fixedly connected to the bottoms of the two sliding blocks, first electric push rods are fixedly connected to the exteriors of the two connecting blocks, a rotating shaft is rotatably connected to the interior of the containing disc, and a rotating disc is fixedly connected to the bottom of the rotating shaft. According to the device, the connecting blocks connected to the two ends move towards the middle through contraction of the first electric push rod, the connecting blocks drive the sliding blocks to slide in the grooves of the containing discs, the sliding blocks move to drive the rotating plates to rotate, and therefore the rotating discs drive the other two rotating plates.

Description

Technical Field

[0001] This utility model relates to the field of grinding equipment technology, and in particular to an outer wall grinding device for a piercing mandrel of seamless steel pipe. Background Technology

[0002] The piercing mandrel for seamless steel pipes is the core tool in the piercing process. It has a columnar structure, with the head mostly being conical or arc-shaped. It is made of high-temperature and wear-resistant alloy material. By penetrating deep into the heated round steel billet, it works with the rolls to form a hollow tube blank, directly affecting the quality of the steel pipe and production efficiency. Due to long-term operation under high temperature and high pressure, the outer wall of the mandrel is prone to wear and steel adhesion, requiring special equipment for repair.

[0003] The outer wall grinding device for seamless steel pipe piercing mandrels is a specialized piece of equipment designed for the repair of the outer wall of piercing mandrels. It mainly consists of a worktable, support frame, adjustment mechanism, grinding motor, and grinding roller. During operation, the piercing mandrel is fixed at a specific fixture on the worktable, and the tilt angle of the grinding roller is adjusted by the adjustment mechanism to perform grinding operations on the outer wall of the mandrel. The grinding removes the damaged layer, ensuring the mandrel can be reused, which is crucial for improving production quality and controlling costs.

[0004] The existing fixtures for grinding the outer wall of the piercing mandrel in seamless steel pipes are fixed-size fixtures, which are difficult to adapt to different sizes of mandrels. Frequent fixture changes are required for clamping and fixing, which affects efficiency. Therefore, a new device for grinding the outer wall of the piercing mandrel in seamless steel pipes is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an outer wall grinding device for a piercing mandrel of seamless steel pipe, which aims to improve the problem of clamping mandrels of different sizes in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A grinding device for the outer wall of a piercing mandrel for seamless steel pipes includes a base, a placement plate rotatably connected to the top of the base, a piercing mandrel placed on the top of the placement plate, clamping blocks slidably connected to the top circumference of the placement plate, sliding blocks fixedly connected to the bottom of the clamping blocks, connecting blocks fixedly connected to the bottom of the two sliding blocks, an electric push rod fixedly connected to the outside of the two connecting blocks, a rotating shaft rotatably connected inside the placement plate, a rotating disk fixedly connected to the bottom of the rotating shaft, rotating plates rotatably connected to the circumference of the rotating disk, one end of the rotating plates rotatably connected to the bottom of the sliding blocks, and a rotating assembly fixedly connected to the outside of the placement plate.

[0008] As a further description of the above technical solution:

[0009] A support frame is fixedly connected to the top of the base, a cylinder is fixedly connected to the bottom of the support frame, a dust collection hood is fixedly connected to the bottom of the cylinder, a pipe is fixedly connected to the outside of the dust collection hood, a dust collection box is placed on the top of the base, a dust collection pump is placed on the top of the dust collection box, a filter screen is installed inside the dust collection box, and a collection box is slidably connected inside the dust collection box.

[0010] As a further description of the above technical solution:

[0011] The rotating assembly includes a driven wheel, the interior of which is fixedly connected to the exterior of the placement plate. A protective shell is fixedly connected to the top of the base. A motor is fixedly connected inside the protective shell. A main wheel is fixedly connected to the drive end of the motor. A belt is coupled to the exterior of the main wheel and the driven wheel.

[0012] As a further description of the above technical solution:

[0013] A cylinder two is fixedly connected to the bottom of the support frame. A fixing block is fixedly connected to the bottom of the cylinder two. A mounting plate is fixedly connected to the outside of the fixing block. Two electric push rods two are fixedly connected to the outside of the mounting plate. A sliding ring is fixedly connected to one end of each electric push rod two. A motor two is fixedly connected to the outside of the mounting plate. A connecting plate is fixedly connected to the drive end of the motor two. A connecting rod is rotatably connected inside the connecting plate. A motor three is fixedly connected to the outside of the connecting rod. A grinding roller is fixedly connected to the drive end of the motor three. A right-angle tube is fixedly connected to one end of the connecting rod. A ball bearing is fixedly connected to one end of the right-angle tube.

[0014] As a further description of the above technical solution:

[0015] The ball bearing is slidably connected to the inner groove of the sliding ring, and the outer side of the grinding roller is in contact with the outer side of the perforated top.

[0016] As a further description of the above technical solution:

[0017] The sliding block is slidably connected to the groove of the placement plate, and the outside of the clamping block is in contact with the outside of the perforated top.

[0018] As a further description of the above technical solution:

[0019] The bottom of the main rotating wheel is rotatably connected to the top of the base, and the bottom of the secondary rotating wheel is in contact with the top of the base;

[0020] As a further description of the above technical solution:

[0021] One end of the pipe is fixedly connected to the air inlet of the dust pump, and the air outlet of the dust pump is fixedly connected to the inside of the dust collection box.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the retraction of the electric push rod causes the connecting blocks at both ends to move towards the middle, so that the connecting blocks drive the sliding blocks to slide in the groove of the placement plate. The movement of the sliding blocks drives the rotating plate to rotate, thereby causing the rotating plate to drive the other two rotating plates. This causes the four clamping blocks of the sliding block to retract and move towards the middle to center and clamp and fix the perforated top. Therefore, the electric push rod can drive the four clamping blocks to achieve clamping and fixing of perforated tops of different sizes.

[0024] 2. In this utility model, by starting the dust pump, a negative pressure environment is created inside the dust collection hood, thereby sucking the metal debris generated during the grinding of the perforated head into the dust collection hood, and then into the dust collection box through the pipe. After passing through the filter screen, it settles into the collection box, thus avoiding the splashing of metal debris when grinding the outer wall of the seamless steel pipe perforated head. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of an outer wall grinding device for a piercing mandrel of seamless steel pipe proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the dust collection hood of a grinding device for the outer wall of a perforating head for seamless steel pipes proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the rotating plate of the outer wall grinding device for a piercing mandrel of seamless steel pipe proposed in this utility model;

[0028] Figure 4 This is a schematic diagram of the sliding ring structure of an outer wall grinding device for a piercing mandrel of seamless steel pipe proposed in this utility model.

[0029] Legend:

[0030] 1. Base; 2. Placement plate; 3. Clamping block; 4. Sliding block; 5. Rotating shaft; 6. Rotating disk; 7. Rotating plate; 8. Connecting block; 9. Electric push rod one; 10. Perforated top head; 11. Driven wheel; 12. Belt; 13. Main wheel; 14. Motor one; 15. Protective shell; 16. Support frame; 17. Cylinder one; 18. Pipe; 19. Dust hood; 20. Dust collection box; 21. Dust pump; 22. Filter screen; 23. Collection box; 24. Cylinder two; 25. Fixing block; 26. Mounting plate; 27. Electric push rod two; 28. Motor two; 29. ​​Sliding ring; 30. Connecting plate; 31. Right angle tube; 32. Ball bearing; 33. Connecting rod; 34. Motor three; 35. Grinding roller. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figures 1 to 3This utility model provides an embodiment of an outer wall grinding device for a piercing mandrel of seamless steel pipe, comprising a base 1, a placement plate 2 rotatably connected to the top of the base 1, a piercing mandrel 10 placed on the top of the placement plate 2, the placement plate 2 serving as a support platform for the piercing mandrel 10, clamping blocks 3 slidably connected to the top circumference of the placement plate 2, and clamping and positioning of piercing mandrels 10 of different sizes achieved by adjusting the position of the clamping blocks 3, a sliding block 4 fixedly connected to the bottom of the clamping blocks 3, and a connecting block 8 fixedly connected to the bottom of each of the two sliding blocks 4, and an electric push rod 9 fixedly connected to the outside of the two connecting blocks 8, the connecting block 8 serving as a connector between the electric push rod 9 and the sliding block 4, transmitting the thrust of the electric push rod 9 to the sliding block 4, the electric push rod 9 serving as a power source, providing driving force for clamping and releasing the clamping blocks 3 through telescopic movement, and a rotating shaft 5 rotatably connected inside the placement plate 2, the bottom of the rotating shaft 5... A rotating disk 6 is fixedly connected to the base 1. A rotating shaft 5 serves as an intermediate component for transmission, transmitting the power of the rotating assembly to the rotating disk 6. Rotating plates 7 are rotatably connected around the four corners of the rotating disk 6, and the rotating plates 7 rotate around the four corners of the rotating disk 6, converting the rotational motion into the linear motion of the sliding block 4. One end of the rotating plate 7 is rotatably connected to the bottom of the sliding block 4, and the outside of the sliding block 4 is slidably connected to the groove of the placement disk 2. The sliding block 4 moves linearly within the groove of the placement disk 2, and the groove provides guidance and limitation for the sliding block 4. The outside of the clamping block 3 contacts the outside of the perforated head 10, and the clamping block 3 can generate a radial clamping force on the perforated head 10. Through the synchronous action of the four clamping blocks 3, the perforated head 10 is stably fixed on the placement disk 2. A rotating assembly is fixedly connected to the outside of the placement disk 2, and the rotating assembly moves synchronously with the placement disk 2, driving the placement disk 2 to rotate on the base 1, thereby realizing the grinding of the perforated head 10.

[0033] The rotating assembly includes a driven wheel 11, which is fixedly connected to the outside of the placement plate 2. The driven wheel 11 and the placement plate 2 form an integral unit to achieve effective power transmission. A protective shell 15 is fixedly connected to the top of the base 1. A motor 14 is fixedly connected inside the protective shell 15 to ensure stable operation of the motor 14 within the protective shell 15. A main wheel 13 is fixedly connected to the drive end of the motor 14. The motor 14 serves as a power source to drive the main wheel 13 to rotate. A belt 12 is externally coupled to the main wheel 13 and the driven wheel 11. The belt 12 is wound around the main wheel 13 and the driven wheel 11 to form a closed transmission circuit, ensuring the stability of power transmission. The bottom of the main wheel 13 is rotatably connected to the top of the base 1. The base 1 provides support for the main wheel 13 to reduce shaking during rotation. The bottom of the driven wheel 11 contacts the top of the base 1. The driven wheel 11 is supported by the base 1 during rotation, ensuring smooth rotation.

[0034] Reference Figure 2 , Figure 4A support frame 16 is fixedly connected to the top of the base 1, and a cylinder 17 is fixedly connected to the bottom of the support frame 16. A dust collection hood 19 is fixedly connected to the bottom of the cylinder 17. The height of the dust collection hood 19 is adjusted by the telescopic movement of the cylinder 17. The dust collection hood 19 covers the grinding area and uses negative pressure to adsorb the metal dust generated during grinding, preventing dust from spreading and polluting the environment. A pipe 18 is fixedly connected to the outside of the dust collection hood 19, and the pipe 18 is connected to the dust collection hood 19. The pipe 18 serves as a dust conveying channel. A dust collection box 2 is placed on the top of the base 1. 0. The dust collection box 20 serves as a collection container. A vacuum pump 21 is placed on top of the dust collection box 20. One end of the pipe 18 is fixedly connected to the air inlet of the vacuum pump 21, and the air outlet of the vacuum pump 21 is fixedly connected to the inside of the dust collection box 20. The vacuum pump 21 generates negative pressure by rotating the impeller, which draws in dusty air from the pipe 18 and delivers it to the dust collection box 20. A filter screen 22 is installed inside the dust collection box 20, and a collection box 23 is slidably connected inside the dust collection box 20. The collection box 23 is used to collect incoming metal dust for easy periodic cleaning.

[0035] Reference Figure 1 , Figure 2 and Figure 4 A cylinder 24 is fixedly connected to the bottom of the support frame 16. A fixing block 25 is fixedly connected to the bottom of the cylinder 24. A mounting plate 26 is fixedly connected to the outside of the fixing block 25, which serves as the connecting carrier for the mounting plate 26. Two electric push rods 27 are fixedly connected to the outside of the mounting plate 26, symmetrically distributed on both sides of the mounting plate 26. A sliding ring 29 is fixedly connected to one end of each electric push rod 27, and the sliding ring 29 moves synchronously with the electric push rod 27. A motor 28 is fixedly connected to the outside of the mounting plate 26, and the motor 28 works stably on the mounting plate 26, serving as the power source. A connecting plate 30 is fixedly connected to the drive end of the motor 28, and the connecting plate 30 rotates synchronously with the motor 28. A connecting rod 33 is rotatably connected inside the connecting plate 30, and a connecting rod 33 is fixedly connected to the outside of the connecting rod 33. Motor 34 moves synchronously with connecting rod 33. A grinding roller 35 is fixedly connected to the drive end of motor 34. The abrasive surface of the grinding roller 35 contacts the perforated head 10. The high-speed rotation removes surface oxide scale or burrs. A right-angle tube 31 is fixedly connected to one end of connecting rod 33. The right-angle tube 31 and connecting rod 33 form an integral unit. A ball bearing 32 is fixedly connected to one end of right-angle tube 31. The ball bearing 32 is slidably connected to the inner groove of sliding ring 29. The inner groove of sliding ring 29 provides a sliding track for ball bearing 32, guiding the movement trajectory of connecting rod 33. The outer side of grinding roller 35 contacts the outer side of perforated head 10. Grinding roller 35 directly acts on the outer wall of perforated head 10. Through the coordinated movement of motor 28 and motor 34, the outer wall of perforated head 10 is ground to ensure surface precision and smoothness.

[0036] Working principle: The perforating mandrel 10 is placed on the placement plate 2. The retraction of the electric push rod 9 causes the connecting blocks 8 connected at both ends to move towards the middle. The connecting blocks 8 drive the sliding blocks 4 to slide in the groove of the placement plate 2. The movement of the sliding blocks 4 drives the rotating plate 7 to rotate, thereby causing the rotating plate 6 to rotate. The rotation of the rotating plate 6 drives the other two rotating plates 7, causing the four clamping blocks 3 to retract and move closer to the middle until the curved surface of the clamping blocks 3 is in close contact with the perforating mandrel 10, thus centering and clamping the perforating mandrel 10 to prevent displacement and affect the grinding effect of the perforating mandrel 10.

[0037] After the perforating head 10 is fixed on the placement plate 2, the main rotating wheel 13 is driven to rotate by the motor 14. The main rotating wheel 13 drives the driven wheel 11 to rotate via the belt 12. Therefore, the driven wheel 11 drives the perforating head 10 to rotate. The position of the fixing block 25 is adjusted by the cylinder 24. When the electric push rod 27 retracts, the sliding ring 29 moves accordingly. Because the position of the connecting plate 30 is fixed, the sliding ring 29 drives the ball 32. The ball 32 is connected to the connecting rod 33 through the right-angle tube 31. Therefore, the ball 32 drives the connecting rod 33 to rotate, thereby changing the angle of the grinding roller 35. The connecting plate 30 is driven to rotate by the motor 28. The connecting plate 30 drives the connecting rod 33 to rotate, thereby driving the grinding roller 35 to rotate. Therefore, the grinding roller 35 can move up and down and rotate left and right, so as to better grind the perforating head 10.

[0038] During the grinding process of the grinding roller 35 on the perforated head 10, the dust pump 21 is started to suck the metal debris generated during the grinding process into the dust hood 19, and then into the dust collection box 20 through the pipe 18. After passing through the filter screen 22, the debris settles into the collection box 23. The collection box 23 is equipped with a handle, which can be pulled out from the dust collection box 20 to deal with the accumulated debris inside.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An outer wall grinding device for seamless steel pipe piercing mandrels, comprising a base (1), characterized in that: The top of the base (1) is rotatably connected to a placement plate (2), and a perforated top head (10) is placed on the top of the placement plate (2). Clamping blocks (3) are slidably connected around the top of the placement plate (2). Sliding blocks (4) are fixedly connected to the bottom of the clamping blocks (3). Connecting blocks (8) are fixedly connected to the bottom of the two sliding blocks (4). Electric push rods (9) are fixedly connected to the outside of the two connecting blocks (8). A rotating shaft (5) is rotatably connected inside the placement plate (2). A rotating disk (6) is fixedly connected to the bottom of the rotating shaft (5). A rotating plate (7) is rotatably connected around the rotating disk (6). One end of the rotating plate (7) is rotatably connected to the bottom of the sliding block (4). A rotating assembly is fixedly connected to the outside of the placement plate (2).

2. A device for grinding the outer wall of a piercing mandrel for seamless steel pipe, according to claim 1, characterized in that: A support frame (16) is fixedly connected to the top of the base (1), a cylinder (17) is fixedly connected to the bottom of the support frame (16), a dust suction hood (19) is fixedly connected to the bottom of the cylinder (17), a pipe (18) is fixedly connected to the outside of the dust suction hood (19), a dust collection box (20) is placed on the top of the base (1), a dust suction pump (21) is placed on the top of the dust collection box (20), a filter screen (22) is installed inside the dust collection box (20), and a collection box (23) is slidably connected inside the dust collection box (20).

3. A device for grinding the outer wall of a piercing mandrel for seamless steel pipe, according to claim 1, characterized in that: The rotating assembly includes a slave wheel (11), the inside of which is fixedly connected to the outside of the placement plate (2). A protective shell (15) is fixedly connected to the top of the base (1). A motor (14) is fixedly connected inside the protective shell (15). A main wheel (13) is fixedly connected to the drive end of the motor (14). A belt (12) is coupled to the outside of the main wheel (13) and the slave wheel (11).

4. A device for grinding the outer wall of a piercing mandrel for seamless steel pipe, according to claim 2, characterized in that: A cylinder 2 (24) is fixedly connected to the bottom of the support frame (16). A fixing block (25) is fixedly connected to the bottom of the cylinder 2 (24). An installation plate (26) is fixedly connected to the outside of the fixing block (25). Two electric push rods 2 (27) are fixedly connected to the outside of the installation plate (26). A sliding ring (29) is fixedly connected to one end of the two electric push rods 2 (27). A motor 2 (28) is fixedly connected to the outside of the installation plate (26). A connecting plate (30) is fixedly connected to the drive end of the motor 2 (28). A connecting rod (33) is rotatably connected inside the connecting plate (30). A motor 3 (34) is fixedly connected to the outside of the connecting rod (33). A grinding roller (35) is fixedly connected to the drive end of the motor 3 (34). A right-angle tube (31) is fixedly connected to one end of the connecting rod (33). A ball bearing (32) is fixedly connected to one end of the right-angle tube (31).

5. A device for grinding the outer wall of a piercing mandrel for seamless steel pipe, according to claim 4, characterized in that: The ball (32) is slidably connected to the inner groove of the sliding ring (29), and the outside of the grinding roller (35) is in contact with the outside of the perforated head (10).

6. An outer wall grinding device for a piercing mandrel of a seamless steel pipe, according to claim 1, wherein: The sliding block (4) is slidably connected to the groove of the placement plate (2), and the outside of the clamping block (3) is in contact with the outside of the perforated top (10).

7. A device for grinding the outer wall of a piercing mandrel for seamless steel pipe, according to claim 3, characterized in that: The bottom of the main rotating wheel (13) is rotatably connected to the top of the base (1), and the bottom of the secondary rotating wheel (11) is in contact with the top of the base (1).

8. An outer wall grinding device for a piercing mandrel of a seamless steel pipe, according to claim 2, wherein: One end of the pipe (18) is fixedly connected to the air inlet of the dust pump (21), and the air outlet of the dust pump (21) is fixedly connected to the inside of the dust collection box (20).

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