Rotary reducing chuck for disc sleeve cutting pipe machine

Abstract

The utility model discloses a kind of rotary reducing chuck for disc sleeve pipe cutting machine, including the pipe shaft assembly that can rotate around itself, annular ring is sleeved on the pipe shaft assembly, the annular ring is fixedly connected along circumference and can be slidably arranged along axial direction, multiple jaw assemblies are uniformly and movably installed on the pipe shaft assembly along circumference, one end of the jaw assembly is movably connected with annular ring, the other end is suitable for moving towards or away from the axial center of annular ring when annular ring reciprocatingly slides along pipe shaft assembly, forming adjustable caliber's clamping opening.The utility model drives jaw assembly to swing in the radial direction of pipe shaft assembly by the movement of annular ring, to realize the mutual approach and away of the clamping end of jaw assembly, to further realize the adjustment of clamping caliber in certain range, compared with existing pneumatic rotary chuck, structure is simple, manufacturing cost is low, and economic practicality is high.

Description

Technical Field

[0001] This utility model relates to the field of disc sleeve pipe cutting machine technology, and in particular to a rotary reducing chuck for disc sleeve pipe cutting machine. Background Technology

[0002] An automatic coiled pipe cutter is a specialized machine for cutting metal pipes, particularly suitable for manufacturing pipes of specific lengths and diameters required for coiled metal pipes (a type of support structure commonly used for winding cables and wires). Traditional coiled pipe cutters can only cut one type of pipe; different cutters are needed for pipes of different diameters and wall thicknesses. Some high-end pipe cutting equipment can adjust the clamping diameter within a certain range to accommodate different material specifications, but due to their high cost, they are unsuitable for small and medium-sized enterprises or manufacturers with relatively few pipe specifications. Purchasing a single traditional coiled automatic pipe cutter with specific specifications costs around 150,000 yuan and requires floor space for installation. Even replacing the traditional clamp with a variable-diameter pneumatic rotary chuck costs around 70,000 yuan, resulting in low cost-effectiveness. Therefore, a new rotary variable-diameter lens design is urgently needed to solve the aforementioned technical challenges. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a rotary variable diameter chuck for a disc sleeve pipe cutting machine. This chuck not only allows for adjustment of the clamping diameter within a certain range, but also has low manufacturing costs and high economic practicality.

[0004] The technical solution to achieve the purpose of this utility model is:

[0005] A rotary variable diameter chuck for a disc-type pipe cutter includes a pipe shaft assembly that can rotate around itself. An annular ring is fitted on the pipe shaft assembly. The annular ring is fixed to the pipe shaft assembly circumferentially and slidably disposed axially. Multiple gripper assemblies are evenly and movably mounted on the pipe shaft assembly circumferentially. One end of each gripper assembly is movably connected to the annular ring, and the other end is adapted to move toward or away from the axis of the annular ring as the annular ring slides back and forth along the pipe shaft assembly, forming a clamping opening with an adjustable diameter.

[0006] Furthermore, the tube-shaft assembly includes a central shaft tube, a directional bracket and a bushing coaxially fixed on the central shaft tube, the bushing being located at the end of the directional bracket away from the clamp, and the annular ring slidingly engaging with the bushing.

[0007] Furthermore, the gripper assembly includes a hinge hinged to the annular ring and swinging radially along the central axis tube, the other end of the hinge being hinged to a pawl that swings radially along the central axis tube, and the middle part of the pawl being hinged to the directional bracket.

[0008] Furthermore, the directional bracket includes an annular support sleeve fixedly connected to the central shaft tube. The end face of the annular support sleeve away from the shaft sleeve is provided with a notch corresponding to the claw. Claw supports are fixedly connected in parallel on both sides of the notch. A groove extending radially along the annular support sleeve is formed between the two claw supports. The claw passes through the groove and is hinged to the claw support.

[0009] Furthermore, the outer circumferential surface of the bushing is provided with at least one axially extending groove, and the inner ring of the annular ring is provided with a protruding rib that matches the groove, the protruding rib being slidably fitted within the groove.

[0010] Furthermore, it also includes a base plate on which a first bearing seat and a linear drive mechanism are fixedly mounted, and a second bearing seat is slidably mounted. The central shaft tube passes through the first bearing seat and rotates with it. The movable end of the linear drive mechanism is fixedly connected to the second bearing seat. A planar bearing is coaxially connected between the annular ring and the second bearing seat.

[0011] Furthermore, the linear drive mechanism is a cylinder.

[0012] Furthermore, a linear bearing assembly located on both sides of the central shaft tube is fixedly mounted parallel to the base plate, and a bracket is fixedly connected between the second bearing seat and the movable end of the linear bearing assembly.

[0013] By adopting the above technical solution, this utility model has the following beneficial effects:

[0014] (1) This utility model drives the gripper assembly to swing radially on the tube shaft assembly by moving the ring ring, thereby realizing that the gripping ends of the gripper assembly move closer and further away from each other, and thus realizes the adjustment of the gripping diameter within a certain range. Compared with the existing pneumatic rotary chuck, it has a simple structure, low manufacturing cost, and high economic practicality.

[0015] (2) The gripper assembly of this utility model consists of a hinge and a jaw. The hinge is driven to swing by the ring, which in turn drives the jaw to swing, thereby realizing the change of the gripping diameter.

[0016] (3) The directional bracket of this utility model places the claws by setting a slot formed by two claw supports, which can not only realize the hinge of the claws, but also play a good guiding role in the radial swing of the claws, avoiding the claws from deflecting during the swing and improving the clamping accuracy.

[0017] (4) This utility model achieves circumferential fixed connection and axial sliding connection of the ring and bushing through the cooperation of the convex ridge and the sliding groove. The structure is simple and easy to process.

[0018] (5) This utility model sets a first bearing seat to support the tube shaft assembly, and drives the second bearing seat to move back and forth along the axial direction through a linear drive mechanism, thereby driving the annular ring connected to it to move. While realizing the axial movement of the annular ring, it will not interfere with the rotation of the tube shaft assembly, and the structure is simple.

[0019] (6) The linear drive mechanism of this utility model adopts a cylinder, which is convenient to control and has a fast action response.

[0020] (7) This utility model achieves a sliding connection between the second bearing seat and the base plate through a linear bearing assembly, which can ensure excellent guiding effect, high load-bearing capacity, and longer service life. Attached Figure Description

[0021] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the central shaft tube structure of this utility model.

[0024] The labels in the attached diagram are:

[0025] Tube shaft assembly 1, central shaft tube 1-1, first annular limiting platform 1-1-1, second annular limiting platform 1-1-2, directional bracket 1-2, annular support sleeve 1-2-1, claw support 1-2-2, bushing 1-3, sliding groove 1-3-1, annular ring 2, protruding ridge 2-1, gripper assembly 3, hinge 3-1, chuck 3-2, base plate 4, first support plate 5, second support plate 6, first bearing seat 7, linear bearing assembly 8, bracket 9, second bearing seat 10, plane bearing 11. Detailed Implementation

[0026] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0027] (Example 1)

[0028] like Figure 1 and Figure 2The rotary reducing chuck for the pipe cutting machine shown includes a pipe shaft assembly 1, an annular ring 2, and a jaw assembly 3. The pipe shaft assembly 1 is connected to the rotating main shaft of the pipe cutting machine, thus realizing the pipe shaft assembly that rotates around itself. The annular ring is sleeved on the pipe shaft assembly 1 and is fixed to the pipe shaft assembly 1 circumferentially and slidably arranged axially. Multiple jaw assemblies 3 are evenly arranged along the circumference of the pipe shaft assembly and are movably mounted on it. One end of each jaw assembly 3 is movably connected to the annular ring 2, and the other end moves toward or away from the axis of the annular ring as the annular ring 2 slides back and forth along the pipe shaft assembly 1, thereby forming an adjustable-diameter clamp to meet the clamping requirements of different pipe materials.

[0029] Specifically, the tube-shaft assembly 1 includes a central shaft tube 1-1, a directional bracket 1-2, and a bushing 1-3. The outer circumferential surface of the central shaft tube 1-1 is provided with a first annular limiting platform 1-1-1 and a second annular limiting platform 1-1-2 from right to left. The directional bracket 1-2 and the bushing 1-3 are axially positioned with respect to the central shaft tube 1-1 via the first annular limiting platform 1-1-1 and the second annular limiting platform 1-1-2, respectively, and are fixedly sleeved onto the central shaft tube 1-1 by screws. The outer circumferential surface of the bushing 1-3 is provided with at least one axially extending groove 1-3-1. In this embodiment, there are three grooves 1-3-1, evenly distributed along the circumference of the bushing 1-3. The inner ring of the annular ring 2 is provided with a protruding rib 2-1 that matches the groove 1-3-1. The protruding rib 2-1 is slidably fitted within the groove 1-3-1, thereby achieving a sliding fit between the annular ring 2 and the bushing 1-3.

[0030] To facilitate the assembly of the chuck onto the pipe cutting machine, this embodiment also includes a base plate 4. A first support plate 5 and a second support plate 6 are vertically fixed to the base plate 4. A first bearing seat 7 and a linear drive mechanism 8 are respectively fixed to the first support plate 5 and the second support plate 6. The central shaft tube 1-1 passes through the first bearing seat 7 and rotatably engages with it, thus supporting the pipe shaft assembly 1 through the first bearing seat 7. Linear bearing assemblies 8 are fixed parallel to each other on both sides of the pipe shaft assembly 1 on the base plate 4. The movable ends of the two linear bearing assemblies 8 are fixed to vertically aligned brackets 9, and a second bearing seat 10 is fixed between the top ends of the two brackets 9. The linear drive mechanism 8 uses a cylinder. The piston rod end of the cylinder is fixed to the second bearing seat 10, and a plane bearing 11 is coaxially connected between the annular ring 2 and the second bearing seat 10. The reciprocating motion of the cylinder causes the second bearing seat 10 to move along the axial direction of the pipe shaft assembly 1, thereby driving the annular ring 2 to move synchronously.

[0031] The gripper assembly 3 is provided in three sets. Each gripper assembly 3 includes a hinge 3-1 that is hinged to the annular ring 2 and swings radially along the central shaft tube. The other end of the hinge 3-1 is hinged to a pawl 3-2 that swings radially along the central shaft tube 1-1. The middle part of the pawl 3-2 is hinged to the directional bracket 1-2, so that the gripping ends of the pawl 3-2 can move closer to each other and separate under the drive of the annular ring 2. The structure is simple and the transmission is reliable.

[0032] To further ensure the accuracy of the radial swing of the jaw 3-2, this embodiment features a special design for the structure of the directional bracket 1-2. Specifically, the directional bracket 1-2 includes an annular support sleeve 1-2-1 fixedly connected to the central shaft tube 1-1. The end face of the annular support sleeve 1-2-1 near the clamping opening has a notch corresponding to the jaw 3-2. Jaw supports 1-2-2 are fixedly connected parallel to each other on both sides of the notch. A groove extending radially along the annular support sleeve is formed between the two jaw supports 1-2-2. The jaw 3-2 passes through the groove and is hinged to the jaw supports 1-2-2. By using the groove formed by the two jaw supports 1-2-2 to place the jaw 3-2, the hinge of the jaw 3-2 is achieved, while also providing excellent guidance for the radial swing of the jaw 3-2, preventing it from deflecting during swing and improving clamping accuracy.

[0033] In this embodiment, the movement of the annular ring 2 drives the gripper assembly 3 to swing radially in the tube shaft assembly 1, thereby enabling the gripping ends of the gripper assembly 3 to move closer and further apart, thus achieving adjustment of the gripping diameter within a certain range. Compared with existing pneumatic rotary chucks, this structure is simple and has low manufacturing cost. The overall processing and manufacturing cost is 3,000 yuan per month, which is far lower than purchasing a pneumatic rotary chuck, making it highly economical and practical.

[0034] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A rotary reducing chuck for a disc-type pipe cutting machine, characterized in that: It includes a tube shaft assembly that can rotate around itself, with an annular ring fitted on the tube shaft assembly. The annular ring is fixed to the tube shaft assembly circumferentially and slidably disposed axially. Multiple gripper assemblies are evenly and movably mounted on the tube shaft assembly circumferentially. One end of each gripper assembly is movably connected to the annular ring, and the other end is adapted to move toward or away from the axis of the annular ring as the annular ring slides back and forth along the tube shaft assembly, forming a clamp with an adjustable diameter.

2. The rotary reducing chuck for a disc-type pipe cutting machine according to claim 1, characterized in that: The tube assembly includes a central tube, a directional bracket and a bushing coaxially fixed on the central tube, the bushing being located at the end of the directional bracket away from the clamp, and the annular ring slidingly engaging with the bushing.

3. A rotary reducing chuck for a disc-type pipe cutting machine according to claim 2, characterized in that: The gripper assembly includes a hinge hinged to an annular ring and swinging radially along a central axis tube. The other end of the hinge is hinged to a gripper that swings radially along the central axis tube, and the middle part of the gripper is hinged to a directional bracket.

4. A rotary reducing chuck for a disc-type pipe cutting machine according to claim 2, characterized in that: The directional bracket includes an annular support sleeve fixedly connected to the central shaft tube. The end face of the annular support sleeve away from the shaft sleeve has a notch corresponding to the claw. Claw supports are fixedly connected in parallel on both sides of the notch. A groove extending radially along the annular support sleeve is formed between the two claw supports. The claw passes through the groove and is hinged to the claw support.

5. A rotary reducing chuck for a disc-type pipe cutting machine according to claim 2, characterized in that: The outer circumferential surface of the bushing is provided with at least one axially extending groove, and the inner ring of the annular ring is provided with a protruding rib that matches the groove, and the protruding rib is slidably fitted in the groove.

6. A rotary reducing chuck for a disc-type pipe cutting machine according to claim 2, characterized in that: It also includes a base plate on which a first bearing seat and a linear drive mechanism are fixedly mounted, and a second bearing seat is slidably mounted. The central shaft tube passes through the first bearing seat and rotates with it. The movable end of the linear drive mechanism is fixedly connected to the second bearing seat. A plane bearing is coaxially connected between the annular ring and the second bearing seat.

7. A rotary reducing chuck for a pipe cutting machine according to claim 6, characterized in that: The linear drive mechanism is a cylinder.

8. A rotary reducing chuck for a disc-type pipe cutting machine according to claim 6, characterized in that: The base plate is fixedly mounted with linear bearing assemblies on both sides of the central shaft tube, and a bracket is fixedly connected between the second bearing seat and the movable end of the linear bearing assembly.

Images