Driving structure for pipe cutting machine

Abstract

The utility model relates to the technical field of pipe cutting machine equipment, in particular to a driving structure for a pipe cutting machine, which comprises a turntable, a square pipe is arranged on the front side of the turntable, an inner clamp and an outer clamp are respectively arranged on the inner side and the outer side of the side wall of the square pipe, and the sections of the inner clamp and the outer clamp are cam-shaped; the square sliding block penetrates through the middle of the rotary disc and is in sliding connection with the rotary disc in the axis direction of the rotary disc, a straight tooth groove is formed in the surface of the square sliding block, and a mounting frame is fixedly mounted on the front face of the rotary disc. The device has the beneficial effects that the inner clamp and the outer clamp are arranged on the inner side and the outer side of the square pipe correspondingly, the sections of the inner clamp and the outer clamp are in a cam shape, and the inner clamp and the outer clamp are obliquely arranged and symmetrical, so that when the square pipe moves away from the rotating disc, the inner clamp and the outer clamp rotate close to each other under the action of friction force; therefore, clamping of the side wall of the square pipe is achieved, and deformation of the square pipe caused by single-side stress on the surface of the square pipe is avoided.

Description

Technical Field

[0001] The utility model relates to the field of pipe cutting machine equipment, in particular to a driving structure for a pipe cutting machine. Background Art

[0002] The pipe cutting machine is a kind of mechanical equipment specially used for cutting various types of pipes. It is widely used in many industries such as construction, automobile, aerospace, chemical industry, etc.

[0003] A Chinese utility model with publication number CN221134421U discloses a driving mechanism for pipe cutting, which utilizes a support member to clamp on the inner wall of the pipe, and then utilizes a motor to cause the support member to drive the pipe to rotate on the support frame, so that the cutting device can cut the pipe.

[0004] However, at present, for a square tube with a thin wall thickness, when its side wall is only clamped by the outside or supported by the inside, it is easy to deform, thereby affecting the use. Therefore, the utility model proposes a driving structure for a tube cutting machine to solve the above problem. Utility Model Content

[0005] The purpose of the utility model is to provide a driving structure for a pipe cutting machine to solve the problems raised in the above background technology.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a driving structure for a pipe cutting machine, comprising:

[0007] A turntable, wherein a square tube is disposed on the front of the turntable, and inner and outer clamps are disposed on the inner and outer sides of the side walls of the square tube, respectively, wherein the cross sections of the inner and outer clamps are both cam-shaped, and the inner and outer clamps are both inclined and symmetrically distributed with respect to each other;

[0008] A square slider, the square slider passes through the middle of the turntable and is slidably connected with the turntable along the axis direction of the turntable, the surface of the square slider is provided with straight tooth grooves, a mounting frame is fixedly installed on the front side of the turntable, a rotating frame is rotatably installed on the mounting frame, and the rotating frame is in the shape of a "π", an arc-shaped tooth groove is provided at the end of the rotating frame close to the square slider, and the arc-shaped tooth groove and the straight tooth groove are meshed with each other, and the inner clamp is rotatably installed on the surface of the rotating frame.

[0009] Preferably, a control cylinder is installed at the center of the back side of the turntable, and the movable end of the control cylinder is fixedly connected to the square slider.

[0010] Preferably, an avoidance groove is provided at one end of the square sliding block, and the mounting frame is arranged in a "cross" shape and is stuck in the inner cavity of the avoidance groove.

[0011] Preferably, a rotating shaft is fixedly installed on the surface of the rotating frame through a bracket, the inner clamp is rotatably installed outside the rotating shaft, and a distance is left between the rotation center of the inner clamp and the rotation center of the rotating frame.

[0012] Preferably, a return torsion spring is sleeved outside the rotating shaft, and both ends of the return torsion spring are fixedly connected to the bracket at the end of the rotating shaft and the inner clamp respectively.

[0013] Preferably, a T-shaped frame is installed on the front surface of the turntable, the outer clamp is rotatably installed at the end of the T-shaped frame, and a torsion spring is arranged between the two.

[0014] Preferably, a limiting sliding groove is opened in the radial direction on the front surface of the turntable, a limiting sliding block is fixedly installed on the surface of the T-shaped frame, the limiting sliding block is located in the inner cavity of the limiting sliding groove and is adapted to it, and the T-shaped frame and the turntable are fixedly connected by bolts.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] In the present utility model, an inner clamp and an outer clamp are respectively arranged on the inner and outer sides of the square tube. The cross-sections of the inner clamp and the outer clamp are both cam-shaped. The inner clamp and the outer clamp are both inclined and symmetric to each other. When the square tube moves close to the turntable along the direction perpendicular to the turntable, the inner clamp and the outer clamp can automatically rotate away from each other. On the contrary, when the square tube moves away from the turntable, the inner clamp and the outer clamp rotate close to each other under the action of friction, so as to realize the clamping of the side wall of the square tube and avoid the deformation of the square tube caused by unilateral force on the surface of the square tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 is a semi-sectional schematic diagram of the turntable structure of the present utility model;

[0019] Figure 3 is a three-dimensional schematic diagram of the square slider structure of the present utility model;

[0020] Figure 4 is a connection schematic diagram of the inner clamp and the mounting frame structure of the present utility model;

[0021] Figure 5 is a separation schematic diagram of the outer clamp and the turntable structure of the present utility model;

[0022] Figure 6 is a clamping schematic diagram of the outer clamp and the inner clamp structures on the side wall of the square tube of the present utility model.

[0023] In the figure: 1. Turntable; 11. Limit chute; 2. Square tube; 3. Outer fixture; 4. Inner fixture; 41. Return torsion spring; 5. Square slider; 51. Avoidance groove; 52. Straight tooth groove; 6. Mounting bracket; 61. Rotating bracket; 62. Arc tooth groove; 63. Rotating shaft; 7. Control cylinder; 8. T-shaped bracket; 81. Limit slider. Detailed implementation mode

[0024] In order to clearly and completely describe the purpose, technical solution of the present utility model and make the advantages more clear, the following further details the embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present utility model, rather than all of the embodiments, and are only used to explain the embodiments of the present utility model, not to limit the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0025] Embodiment 1, please refer to Figures 1-6 , the present utility model provides a technical solution: a driving structure for a pipe cutting machine, including: a turntable 1 and a square slider 5.

[0026] Specifically, a square tube 2 is arranged on the front surface of the turntable 1. As Figure 1 shown, the end surface of the square tube 2 fits the front surface of the turntable 1. The square tube 2 is perpendicular to the front surface of the turntable 1 and is located at the center of the turntable 1. An inner fixture 4 and an outer fixture 3 are respectively arranged on the inner and outer sides of the side wall of the square tube 2. Four groups of the inner fixture 4 and the outer fixture 3 of the device are provided, corresponding to the four side walls of the square tube 2 respectively. The cross-sections of the inner fixture 4 and the outer fixture 3 are both cam-shaped. The inner fixture 4 and the outer fixture 3 are both inclined and symmetrically distributed. Combining Figure 1 and Figure 6 shown, both the outer fixture 3 and the inner fixture 4 fit the square tube 2. When the square tube 2 moves closer to the turntable 1, the outer fixture 3 and the inner fixture 4 rotate away from each other under the action of friction, but will not hinder the movement of the square tube 2. On the contrary, when the square tube 2 moves away from the turntable 1, the outer fixture 3 and the inner fixture 4 rotate closer to each other under the action of friction. At this time, the outer fixture 3 and the inner fixture 4 can produce a clamping effect on the square tube 2, thereby realizing the positioning of the square tube 2.

[0027] Secondly, the square slider 5 penetrates through the middle of the turntable 1 and is slidably connected to it along the axis direction of the turntable 1. A straight tooth groove 52 is arranged on the surface of the square slider 5. The straight tooth groove 52 is arranged along the length direction of the square slider 5, that is, perpendicular to the front surface of the turntable 1. A mounting bracket 6 is fixedly installed on the front surface of the turntable 1. A rotating bracket 61 is rotatably installed on the mounting bracket 6, and the rotating bracket 61 is in the shape of "π". As Figure 4As shown, the rotating frame 61 can also be regarded as being fixedly composed of two "T" - shaped structures. An arc - shaped tooth groove 62 is provided at the end of the rotating frame 61 close to the square slider 5, and the arc - shaped tooth groove 62 meshes with the straight tooth groove 52. When the square slider 5 slides, the meshing between the straight tooth groove 52 and the arc - shaped tooth groove 62 can drive the rotating frame 61 to rotate. The inner fixture 4 is rotatably installed on the surface of the rotating frame 61. When the rotating frame 61 rotates, the inner fixture 4 can approach or move away from the outer fixture 3, facilitating the removal of the square tube 2. Additionally, by changing the position of the inner fixture 4, square tubes 2 with different outer dimensions and wall thicknesses can be adapted.

[0028] To drive the square slider 5 to slide, the present application also has a control cylinder 7 installed at the center of the back surface of the turntable 1. The movable end of the control cylinder 7 is fixedly connected to the square slider 5. The control cylinder 7 is provided to drive the square slider 5 to slide, thereby controlling the position of the inner fixture 4.

[0029] To prevent the square slider 5 from colliding with the mounting frame 6 when sliding, the present application also has an avoidance groove 51 opened at one end of the square slider 5. The mounting frame 6 is set in a "cross" shape and is stuck in the inner cavity of the avoidance groove 51, as Figure 3 shown. The cross - section of the square slider 5 is in a "square" shape, mainly to be adapted to the cross - section shape of the square tube 2. And when the square slider 5 slides, it can drive the four inner fixtures 4 to rotate synchronously, improving the control efficiency of the inner fixtures 4.

[0030] To control the movement of the inner fixture 4, the present application also has a rotating shaft 63 fixedly installed on the surface of the rotating frame 61 through a bracket. The inner fixture 4 is rotatably installed outside the rotating shaft 63. There is a spacing between the rotation center of the inner fixture 4 and the rotation center of the rotating frame 61, as Figure 4 shown. When the rotating frame 61 rotates, it can drive the inner fixture 4 to displace, thereby approaching or moving away from the inner wall of the square tube 2. And by controlling the angle of the rotating frame 61 after rotation, the spacing between the four inner fixtures 4 can be changed, thus adapting to square tubes 2 of different sizes.

[0031] To reset the inner fixture 4, the present application also has a reset torsion spring 41 sleeved outside the rotating shaft 63. The two ends of the reset torsion spring 41 are respectively fixedly connected to the bracket at the end of the rotating shaft 63 and the inner fixture 4, as Figure 4 and Figure 6 shown. The setting of the reset torsion spring 41 ensures that the inner fixture 4 always has a tendency to press against the inner wall of the square tube 2.

[0032] To install and reset the outer fixture 3, the present application also has a T - shaped frame 8 installed on the front surface of the turntable 1. The outer fixture 3 is rotatably installed at the end of the T - shaped frame 8, and a torsion spring is provided between the two, as Figure 6As shown, the outer fixture 3 is similar to the inner fixture 4 and always has a tendency to press against the side wall of the square tube 2.

[0033] In order to adjust the position of the T-shaped frame 8, the present application also has a limit chute 11 opened in the radial direction on the front surface of the turntable 1. A limit slider 81 is fixedly installed on the surface of the T-shaped frame 8. The limit slider 81 is located in the inner cavity of the limit chute 11 and is adapted to it. The T-shaped frame 8 is fixedly connected to the turntable 1 by bolts. As Figure 5 shown, on the front surface of the turntable 1 and on both sides of the limit chute 11, a plurality of screw holes are also opened for fixing the T-shaped frame 8 with bolts. By loosening the bolts and sliding the limit slider 81 along the length direction of the limit chute 11, the position of the T-shaped frame 8 can be adjusted, so as to cooperate with the inner fixture 4 to realize the clamping and positioning of square tubes 2 of different sizes, so that the square tube 2 can be driven to rotate when the turntable 1 rotates.

[0034] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A driving structure for a pipe cutting machine, characterized in that: include: A turntable (1), wherein a square tube (2) is arranged on the front of the turntable (1), and an inner clamp (4) and an outer clamp (3) are arranged on the inner and outer sides of the side wall of the square tube (2), respectively, wherein the cross sections of the inner clamp (4) and the outer clamp (3) are both cam-shaped, and the inner clamp (4) and the outer clamp (3) are both inclined and symmetrically distributed with respect to each other; A square slider (5) is provided, the square slider (5) passes through the middle of the turntable (1) and is slidably connected to the turntable (1) along the axis direction thereof; a straight tooth groove (52) is provided on the surface of the square slider (5); a mounting frame (6) is fixedly mounted on the front of the turntable (1); a rotating frame (61) is rotatably mounted on the mounting frame (6); the rotating frame (61) is in the shape of a "π"; an arc-shaped tooth groove (62) is provided at the end of the rotating frame (61) close to the square slider (5); the arc-shaped tooth groove (62) and the straight tooth groove (52) are meshed with each other; and the inner clamp (4) is rotatably mounted on the surface of the rotating frame (61).

2. A driving structure for a pipe cutting machine according to claim 1, characterized in that: A control cylinder (7) is installed at the center of the back side of the turntable (1), and the movable end of the control cylinder (7) is fixedly connected to the square slider (5).

3. A driving structure for a pipe cutting machine according to claim 1, characterized in that: An avoidance groove (51) is provided at one end of the square sliding block (5), and the mounting frame (6) is arranged in a "cross" shape and is clamped in the inner cavity of the avoidance groove (51).

4. A driving structure for a pipe cutting machine according to claim 1, characterized in that: A rotating shaft (63) is fixedly mounted on the surface of the rotating frame (61) via a bracket, and the inner clamp (4) is rotatably mounted on the outside of the rotating shaft (63), with a distance between the rotation center of the inner clamp (4) and the rotation center of the rotating frame (61).

5. A driving structure for a pipe cutting machine according to claim 4, characterized in that: The outer side of the rotating shaft (63) is sleeved with a return torsion spring (41), and the two ends of the return torsion spring (41) are respectively fixedly connected to the bracket and the inner clamp (4) at the end of the rotating shaft (63).

6. A driving structure for a pipe cutting machine according to claim 1, characterized in that: A T-shaped frame (8) is installed on the front of the turntable (1), and the outer clamp (3) is rotatably installed on the end of the T-shaped frame (8), and a torsion spring is arranged between the two.

7. A driving structure for a pipe cutting machine according to claim 6, characterized in that: A limit slide groove (11) is provided on the front side of the turntable (1) in a radial direction, a limit slide block (81) is fixedly mounted on the surface of the T-shaped frame (8), the limit slide block (81) is located in the inner cavity of the limit slide groove (11) and is adapted thereto, and the T-shaped frame (8) and the turntable (1) are fixedly connected by bolts.

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