Sleeve chuck for jacketing machine

Abstract

The utility model relates to a jacketing chuck for jacketing machine, which comprises a snap ring, at least two abutting blocks and a driving assembly, the snap ring is located in a pipe body to be clamped, the abutting blocks are equidistantly arranged along the circumferential direction of the snap ring, the abutting blocks slide along the radial direction of the snap ring under the action of the driving assembly, the circumferential side wall of each abutting block is provided with a containing opening for the abutting block to slide, and the driving assembly is located in the containing opening. The abutting block slides towards the direction close to the circle center of the clamping ring till the face, away from the circle center of the clamping ring, of the abutting block is completely located in the containing opening, and the abutting block slides towards the direction away from the circle center of the clamping ring till the face, away from the circle center of the clamping ring, of the abutting block abuts against the inner circumferential wall of the pipe body. According to the technical scheme, the effect of stably clamping the pipe body from the interior of the pipe body can be achieved.

Description

Technical Field

[0001] The utility model relates to the field of casing machines, in particular to a casing chuck for the casing machine. Background Art

[0002] The casing machine is a device used to connect two pipes or a pipe and a joint. Before the connection, the casing or joint needs to be supported and stabilized with a chuck.

[0003] Currently, three-jaw chucks are mostly used to press the outer wall of the tube body from the outside of the sleeve. However, when the outer wall is not a smooth surface, such as the outer wall of a corrugated tube, the jaws of the three-jaw chuck are not tightly fitted with the tube body, and there is a possibility of damaging the corrugated structure. Therefore, a chuck that can clamp the tube body from the inside of the tube body is needed. Utility Model Content

[0004] In order to solve the above technical problems, the present application provides a casing chuck for a casing machine.

[0005] The present application provides a casing chuck for a casing machine adopts the following technical solution:

[0006] A casing chuck for a casing machine, comprising a clamping ring, an abutment block, and a drive assembly. The clamping ring is located in a pipe body to be clamped. A side of the clamping ring away from the pipe body is fixedly and coaxially connected to a fixing ring. The center of the fixing ring is coaxially and fixedly connected to a fixing shaft. The fixing shaft is connected to a workbench through a support seat, and the support seat is slidably connected to the workbench through a screw module.

[0007] At least two abutment blocks are equidistantly arranged along the circumference of the clamping ring. The abutment blocks slide radially along the clamping ring under the action of the driving assembly. An accommodating opening for the sliding of the abutment blocks is provided on the circumferential side wall of the abutment blocks. The abutment blocks slide toward the direction close to the center of the clamping ring until the side of the abutment blocks away from the center of the clamping ring is completely located in the accommodating opening. The abutment blocks slide toward the direction away from the center of the clamping ring until the side of the abutment blocks away from the center of the clamping ring is tightly abutted against the inner circumferential wall of the tube body.

[0008] Preferably, the driving assembly includes a connecting ring, a driving shaft, a driving cylinder, and a driving plate; the connecting ring is arranged at the center of the clamping ring, the connecting ring is slidably arranged along the central axis of the clamping ring, the driving shaft is coaxially fixedly connected to the center of the connecting ring, the fixed shaft is hollow, the driving shaft slides in the fixed shaft, the driving cylinder is arranged at an end of the driving shaft away from the connecting ring, the cylinder body of the driving cylinder is mounted on a support seat, and the piston rod of the driving cylinder is coaxially connected to the driving shaft;

[0009] The driving plates correspond to the abutment blocks one by one, and one end of the plurality of driving plates away from the snap ring is rotatably connected to the connecting ring at the same time. A first connecting rod and a second connecting rod are provided at one end of the driving plate away from the connecting ring. The first connecting rod and the second connecting rod are connected by a third connecting rod. One end of the first connecting rod away from the connecting ring is rotatably connected to the inner wall of the snap ring, and one end of the second connecting rod away from the connecting ring is rotatably connected to the abutment block.

[0010] When the piston rod of the driving cylinder is extended, the driving shaft slides in the direction close to the clamping ring, and the end of the driving plate connected to the connecting ring swings in the direction away from the driving cylinder. With the connection point between the first connecting rod and the clamping ring as the rotation center, the end of the second connecting rod close to the connecting ring swings in the direction away from the driving cylinder and away from the center of the clamping ring, so that the second connecting rod drives the abutment block to move in the direction close to the inner circumferential wall of the tube body, so that the side of the abutment block away from the center of the clamping ring is tightly abutted against the inner circumferential wall of the tube body;

[0011] When the piston rod of the driving cylinder is retracted, the driving shaft slides in the direction away from the retaining ring, and the end of the driving plate connected to the connecting ring swings in the direction close to the driving cylinder. With the connection point between the first connecting rod and the retaining ring as the center of rotation, the end of the second connecting rod close to the connecting ring swings in the direction close to the driving cylinder and the center of the retaining ring, so that the second connecting rod drives the abutment block to move in the direction away from the inner peripheral wall of the tube body, so that the side of the abutment block away from the center of the retaining ring is completely located in the accommodating port.

[0012] Preferably, the driving plate is arranged to be gradually tapered from close to the snap ring to away from the snap ring.

[0013] Preferably, a rotation groove for the end of the driving plate away from the clamping ring to rotate is provided on the outer peripheral wall of the connecting ring, and the end of the driving plate away from the clamping ring swings in the rotation groove.

[0014] Preferably, a rotation groove for the end of the driving plate away from the clamping ring to rotate is provided on the outer peripheral wall of the connecting ring, and the end of the driving plate away from the clamping ring swings in the rotation groove.

[0015] Preferably, four abutment blocks are equidistantly arranged along the circumference of the clamping ring.

[0016] In summary, this application has the following beneficial technical effects:

[0017] When clamping the tube body, the clamping ring, the driving plate, and the abutment block are moved as a whole into the tube body through the screw module, and then the piston rod of the driving cylinder is extended, the driving shaft slides in the direction close to the clamping ring, and the end of the driving plate connected to the connecting ring swings in the direction away from the driving cylinder. With the connection point of the first connecting rod and the clamping ring as the rotation center, the end of the second connecting rod close to the connecting ring swings in the direction away from the driving cylinder and away from the center of the clamping ring, so that the second connecting rod drives the abutment block to move in the direction close to the circumferential wall of the tube body, so that the side of the abutment block away from the center of the clamping ring is tightly abutted against the inner circumferential wall of the tube body, thereby achieving the effect of clamping the tube body from the inside of the tube body;

[0018] When the clamping state needs to be released, the piston rod of the driving cylinder is retracted, the driving shaft slides in the direction away from the retaining ring, and the end of the driving plate connected to the connecting ring swings in the direction close to the driving cylinder. With the connection point between the first connecting rod and the retaining ring as the center of rotation, the end of the second connecting rod close to the connecting ring swings in the direction close to the driving cylinder and close to the center of the retaining ring, so that the second connecting rod drives the abutment block to move in the direction away from the inner wall of the tube body, so that the side of the abutment block away from the center of the retaining ring is completely located in the accommodating port, and finally the retaining ring, driving plate and abutment block are moved as a whole out of the tube body through the screw module. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall cross-sectional structure of a casing chuck for a casing machine in an embodiment of the present application.

[0020] Figure 2 It is a schematic diagram of the three-dimensional cross-sectional structure used to show the interior of the chuck in the embodiment of the present application.

[0021] Explanation of the accompanying drawings: 1. Snap ring; 11. Receiving port; 2. Abutment block; 21. Give way groove; 3. Driving assembly; 31. Connecting ring; 311. Rotating groove; 32. Driving shaft; 33. Driving plate; 331. First connecting rod; 332. Second connecting rod; 333. Third connecting rod; 4. Fixed ring; 41. Fixed shaft. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1-2 This application is described in further detail.

[0023] The embodiment of the present application discloses a casing chuck for a casing machine.

[0024] Reference Figure 1-2 The casing chuck for the casing machine includes a clamping ring 1, an abutment block 2, and a driving assembly 3. The clamping ring 1 is located in the tube body to be clamped. The side of the clamping ring 1 away from the tube body is fixedly and coaxially connected with a fixing ring 4. The center of the fixing ring 4 is coaxially fixedly connected with a fixed shaft 41. The fixed shaft 41 is connected to the workbench through a support seat, and the support seat is slidably connected to the workbench through a screw module.

[0025] At least two abutment blocks 2 are equidistantly arranged along the circumference of the clasp 1, and in this embodiment, four are arranged to enhance the effectiveness of the chuck in gripping the tube. Under the action of the drive assembly 3, the abutment blocks 2 slide radially along the clasp 1. An accommodating opening 11 for sliding the abutment blocks 2 is provided on the circumferential sidewall of the abutment blocks 2. The abutment blocks 2 slide toward the center of the clasp 1 until the side of the abutment blocks 2 facing away from the center of the clasp 1 is completely within the accommodating opening 11. The abutment blocks 2 then slide away from the center of the clasp 1 until the side of the abutment blocks 2 facing away from the center of the clasp 1 abuts against the inner circumferential wall of the tube.

[0026] The inner peripheral wall of the accommodating opening 11 is in contact with the outer peripheral wall of the abutting block 2 , and the accommodating opening 11 provides a limiting guide for the movement of the abutting block 2 .

[0027] The driving assembly 3 includes a connecting ring 31, a driving shaft 32, a driving cylinder 33, and a driving plate 33. The connecting ring 31 is arranged at the center of the retaining ring 1, and the connecting ring 31 is slidably arranged along the central axis of the retaining ring 1. The driving shaft 32 is coaxially fixedly connected to the center of the connecting ring 31. The fixed shaft 41 is hollow, and the driving shaft 32 slides in the fixed shaft 41. The driving cylinder 33 is arranged at the end of the driving shaft 32 away from the connecting ring 31. The cylinder body of the driving cylinder 33 is fixedly installed on the support seat, and the piston rod of the driving cylinder 33 is coaxially connected to the driving shaft 32.

[0028] The driving plates 33 correspond to the abutment blocks 2 one by one, and the ends of the multiple driving plates 33 away from the retaining ring 1 are rotatably connected to the connecting ring 31 at the same time. The end of the driving plate 33 away from the connecting ring 31 is provided with a first connecting rod 331 and a second connecting rod 332. The first connecting rod 331 and the second connecting rod 332 are connected by a third connecting rod 333. The end of the first connecting rod 331 away from the connecting ring 31 is rotatably connected to the inner wall of the retaining ring 1, and the end of the second connecting rod 332 away from the connecting ring 31 is rotatably connected to the abutment block 2.

[0029] The driving plate 33 is arranged to be gradually reduced in a direction from being close to the snap ring 1 to being away from the snap ring 1 .

[0030] A rotation groove 311 is defined on the outer peripheral wall of the connecting ring 31 for the end of the driving plate 33 away from the snap ring 1 to rotate. The end of the driving plate 33 away from the snap ring 1 swings in the rotation groove 311 .

[0031] The second connecting rod 332 is rotatably connected to the middle part of the abutment block 2 in the length direction to improve the uniformity of the force applied to the abutment block 2. A clearance groove 21 for the second connecting rod 332 to rotate is provided on the side of the abutment block 2 away from the tube body. The clearance groove 21 is larger than the end of the second connecting rod 332 and allows the second connecting rod 332 to swing.

[0032] When the piston rod of the driving cylinder 33 is extended, the driving shaft 32 slides toward the direction close to the retaining ring 1, and the end of the driving plate 33 connected to the connecting ring 31 swings toward the direction away from the driving cylinder 33. With the connection point between the first connecting rod 331 and the retaining ring 1 as the center of rotation, the end of the second connecting rod 332 close to the connecting ring 31 swings toward the direction away from the driving cylinder 33 and the center of the retaining ring 1, so that the second connecting rod 332 drives the abutment block 2 to move toward the direction close to the inner circumferential wall of the tube body, so that the side of the abutment block 2 away from the center of the retaining ring 1 is tightly pressed against the inner circumferential wall of the tube body, thereby achieving the effect of clamping the tube body from the inside of the tube body.

[0033] When the piston rod of the driving cylinder 33 retracts, the driving shaft 32 slides in the direction away from the retaining ring 1, and the end of the driving plate 33 connected to the connecting ring 31 swings in the direction close to the driving cylinder 33. With the connection point between the first connecting rod 331 and the retaining ring 1 as the center of rotation, the end of the second connecting rod 332 close to the connecting ring 31 swings in the direction close to the driving cylinder 33 and the center of the retaining ring 1, so that the second connecting rod 332 drives the abutment block 2 to move in the direction away from the inner circumferential wall of the tube body, so that the side of the abutment block 2 away from the center of the retaining ring 1 is completely located in the accommodating port 11.

[0034] The implementation principle of a casing chuck for a casing machine in the embodiment of the present application is as follows:

[0035] When clamping the tube body, the screw module moves the clamping ring 1, the driving plate 33, and the abutment block 2 as a whole into the tube body, and then drives the piston rod of the cylinder 33 to extend, and the driving shaft 32 slides in the direction close to the clamping ring 1. The end of the driving plate 33 connected to the connecting ring 31 swings in the direction away from the driving cylinder 33, and the second connecting rod 332 drives the abutment block 2 to move in the direction close to the inner peripheral wall of the tube body, so that the side of the abutment block 2 away from the center of the clamping ring 1 is tightly abutted against the inner peripheral wall of the tube body.

[0036] When the clamping state needs to be released, the piston rod of the driving cylinder 33 is retracted, the driving shaft 32 slides in the direction away from the retaining ring 1, and the end of the driving plate 33 connected to the connecting ring 31 swings in the direction close to the driving cylinder 33. The second connecting rod 332 drives the abutment block 2 to move in the direction away from the inner wall of the tube body, so that the side of the abutment block 2 away from the center of the retaining ring 1 is completely located in the accommodating port 11. Finally, the retaining ring 1, the driving plate 33, and the abutment block 2 are moved as a whole out of the tube body through the screw module.

[0037] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A casing chuck for a casing machine, characterized by: The invention comprises a clamping ring (1), an abutting block (2), and a driving assembly (3); the clamping ring (1) is located in a tube body to be clamped; a side of the clamping ring (1) away from the tube body is fixedly and coaxially connected to a fixing ring (4); the center of the fixing ring (4) is coaxially and fixedly connected to a fixing shaft (41); the fixing shaft (41) is connected to a workbench through a support seat; and the support seat is slidably connected to the workbench through a screw module; At least two abutment blocks (2) are equidistantly arranged along the circumference of the clamping ring (1). Under the action of the driving assembly (3), the abutment blocks (2) slide radially along the clamping ring (1). A receiving opening (11) for the abutment blocks (2) to slide is provided on the circumferential side wall of the abutment block (2). The abutment block (2) slides in a direction close to the center of the clamping ring (1) until a side of the abutment block (2) away from the center of the clamping ring (1) is completely located in the receiving opening (11). The abutment block (2) slides in a direction away from the center of the clamping ring (1) until a side of the abutment block (2) away from the center of the clamping ring (1) is tightly abutted against the inner circumferential wall of the tube body.

2. The casing chuck for a casing machine according to claim 1, characterized in that: The driving assembly (3) comprises a connecting ring (31), a driving shaft (32), a driving cylinder, and a driving plate (33); the connecting ring (31) is arranged at the center of the snap ring (1); the connecting ring (31) is slidably arranged along the central axis of the snap ring (1); the driving shaft (32) is coaxially fixedly connected to the center of the connecting ring (31); the fixed shaft (41) is hollow; the driving shaft (32) slides in the fixed shaft (41); the driving cylinder is arranged at one end of the driving shaft (32) away from the connecting ring (31); the cylinder body of the driving cylinder is installed on a support seat; and the piston rod of the driving cylinder is coaxially connected to the driving shaft (32); The driving plates (33) correspond to the abutment blocks (2) one by one, and the ends of the plurality of driving plates (33) away from the snap ring (1) are simultaneously rotatably connected to the connecting ring (31). The end of the driving plate (33) away from the connecting ring (31) is provided with a first connecting rod (331) and a second connecting rod (332). The first connecting rod (331) and the second connecting rod (332) are connected via a third connecting rod (333). The end of the first connecting rod (331) away from the connecting ring (31) is rotatably connected to the inner wall of the snap ring (1), and the end of the second connecting rod (332) away from the connecting ring (31) is rotatably connected to the abutment block (2); When the piston rod of the driving cylinder is extended, the driving shaft (32) slides in a direction close to the snap ring (1), and the end of the driving plate (33) connected to the connecting ring (31) swings in a direction away from the driving cylinder. With the connection point between the first connecting rod (331) and the snap ring (1) as the center of rotation, the end of the second connecting rod (332) close to the connecting ring (31) swings in a direction away from the driving cylinder and away from the center of the snap ring (1), so that the second connecting rod (332) drives the abutment block (2) to move in a direction close to the inner peripheral wall of the tube body, so that the side of the abutment block (2) away from the center of the snap ring (1) is pressed against the inner peripheral wall of the tube body; When the piston rod of the driving cylinder is retracted, the driving shaft (32) slides in a direction away from the snap ring (1), and the end of the driving plate (33) connected to the connecting ring (31) swings in a direction close to the driving cylinder. With the connection point between the first connecting rod (331) and the snap ring (1) as the center of rotation, the end of the second connecting rod (332) close to the connecting ring (31) swings in a direction close to the driving cylinder and close to the center of the snap ring (1), so that the second connecting rod (332) drives the abutment block (2) to move in a direction away from the inner peripheral wall of the tube body, so that the side of the abutment block (2) away from the center of the snap ring (1) is completely located in the accommodating opening (11).

3. The casing chuck for a casing machine according to claim 2, characterized in that: The driving plate (33) is arranged to gradually shrink in a direction from close to the snap ring (1) to away from the snap ring (1).

4. The casing chuck for a casing machine according to claim 2, characterized in that: A rotation groove (311) for the end of the driving plate (33) away from the snap ring (1) to rotate is provided on the outer peripheral wall of the connecting ring (31), and the end of the driving plate (33) away from the snap ring (1) swings in the rotation groove (311).

5. The casing chuck for a casing machine according to claim 2, characterized in that: The second connecting rod (332) is rotatably connected to the middle portion of the abutment block (2) in the longitudinal direction.

6. The casing chuck for a casing machine according to claim 1, characterized in that: Four abutment blocks (2) are arranged at equal intervals along the circumference of the clamping ring (1).

Images