Positioning device for pipe cutting machine

Abstract

The utility model discloses a positioning device for a pipe cutting machine, which belongs to the technical field of positioning devices and comprises a base, a bidirectional limit component is arranged on one side of the top of the base, and a support component is arranged on the side of the bidirectional limit component. The bidirectional limiting assembly comprises a moving plate arranged at the top of the base, a fixed cylinder fixedly arranged at the top of the moving plate, an external expansion unit arranged on the side wall of the fixed cylinder, an internal contraction unit arranged on the outer side of the external expansion unit and a pushing piece arranged at the top of the base. The tail end of an output shaft of the pushing piece is fixedly connected with the side face of the movable plate. The supporting assembly comprises a supporting ring arranged on one side of the top of the base, a supporting table fixedly arranged on the inner wall of the supporting ring and a lower pressing plate arranged on the top of the supporting table. Through the arrangement of the bidirectional limiting assembly and the supporting assembly, shaking during cutting is avoided, and the cutting effect on a pipeline is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning devices, in particular to a positioning device for a pipe cutting machine. Background Art

[0002] A pipe cutter is a common type of pipe cutting equipment. Through the interaction of a computer and hydraulics, the electrical system controls the hydraulic system's oil flow direction, driving the carriage in a linear reciprocating motion. The microcomputer follows the user-programmed cutting path. During this reciprocating motion, signals detected by the carriage's limit stops are used to control and alter the hydraulic flow, achieving the desired cutting path and ultimately cutting the pipe. Positioning the pipe is essential when using the pipe cutter.

[0003] After searching, it was found that the Chinese patent publication number is: CN220943416U, which discloses a positioning device for a pipe cutting machine, including: a base, a bracket is provided on the top of the base; the positioning device can fix the pipe and then cut it by using the design of an arc-shaped clamp and a tapered tube through a fixing component. Compared with the existing device, the fixing method is simpler, and the setting of the arc-shaped clamp can be used to cut pipes of different specifications. The positioning device fixes the pipe through the lifting component when it is used. In order to ensure that the pipe is more stable during cutting, the pipe sleeve can be rotated. When rotating, the setting of the anti-slip ridges can increase the friction force and make the rotation more convenient. When rotating, the pipe sleeve rises and the plate body also rises until the inner wall of the arc groove fits the pipe. During the lifting process, the vertical rod rises inside the hollow pipe to limit the plate body from rotating. The arc groove supports the pipe, which is convenient for the pipe cutting machine body to cut it.

[0004] Although the above scheme has the advantage of fixed cutting of the pipe, in actual use, the outer surface of the pipe is limited and fixed only by the design of the arc splint and the tapered tube, and its fixing effect is poor. It is easy to shake during cutting, affecting the cutting effect.

[0005] Therefore, it is urgent to provide a positioning device for a pipe cutting machine to solve the above problems. Utility Model Content

[0006] The technical problem to be solved by the present invention is to overcome the disadvantage that although the above-mentioned prior art has the advantage of fixed cutting of the pipe, in actual use, the outer surface of the pipe is limited and fixed only by the design of the arc-shaped splint and the tapered tube, and its fixing effect is poor, and it is easy to shake during cutting, which affects the cutting effect. A positioning device for a pipe cutting machine is provided.

[0007] In order to solve the above technical problems, the present invention adopts a technical solution: providing a positioning device for a pipe cutting machine, comprising a base, a top side of the base is provided with a two-way limit assembly, and a side portion of the two-way limit assembly is provided with a support assembly;

[0008] The two-way limiting assembly includes a movable plate arranged on the top of the base, a fixed cylinder fixedly arranged on the top of the movable plate, an outward expansion unit arranged on the side wall of the fixed cylinder, and an inward retraction unit arranged outside the outward expansion unit;

[0009] The support assembly includes a support ring arranged on one side of the top of the base, a support platform fixedly arranged on the inner wall of the support ring, and a lower pressure plate arranged on the top of the support platform.

[0010] The utility model is further configured as follows: supports are fixedly connected to the bottom corners of the base.

[0011] The present invention is further configured as follows: the bidirectional limiting assembly further comprises a pushing member arranged on the top of the base, and the output shaft end of the pushing member is fixedly connected to the side surface of the movable plate.

[0012] The utility model is further configured as follows: the outward expansion unit includes an extrusion rod provided at the middle portion of the inner side of the fixed cylinder, and an extrusion piece provided at the outer side of the extrusion rod;

[0013] The extrusion piece includes a fixed shell installed on the side wall of the fixed cylinder, a pressing block movably arranged on the inner side of the fixed shell, a protrusion arranged on the surface of the pressing block, and a return spring arranged on the top of the protrusion.

[0014] The utility model is further configured as follows: one end of the extrusion rod is in a tapered structure, and one end of the pressing block is provided with an oblique surface adapted to the tapered structure of the extrusion rod.

[0015] The utility model is further configured as follows: the retraction unit includes a mounting bracket installed on the top of the movable plate, a threaded rod threadedly connected to the side wall of the mounting bracket, a sliding sleeve threadedly connected to the outside of the threaded rod, and a limiting rod installed on the outer surface of the sliding sleeve. There are multiple groups of the limiting rods, and the multiple groups of the limiting rods are arranged in a circular array on the outside of the fixed cylinder. The threaded rod and the extrusion rod are integrally formed.

[0016] The utility model is further configured as follows: an inner wall of the limiting rod on a side opposite to the fixing cylinder is provided with an inclined portion, and an anti-slip pad is provided at the inclined portion.

[0017] The utility model is further configured as follows: a lifting member is provided at the bottom of the support ring, and a vertical rod is installed at the top of the lower pressure plate.

[0018] The beneficial effects of the utility model are as follows:

[0019] When the cam is in contact with the pipe, the end of the cam is moved to the outside of the pipe, thereby fixing the inner wall of the pipe. When the cam is in contact with the pipe, the end of the cam is moved to the outside of the pipe, thereby fixing the inner wall of the pipe. When the cam is in contact with the pipe, the end of the cam is moved to the outside of the pipe, thereby fixing the inner wall of the pipe. When the cam is in contact with the pipe, the end of the cam is moved to the outside of the pipe, thereby fixing the inner wall of the pipe. When the cam is in contact with the pipe, the end of the cam is moved to the outside of the pipe, thereby fixing the inner wall of the pipe.

[0020] 2. The utility model provides a support assembly that cooperates with the rotating vertical rod to push the lower pressure plate and the support platform to limit and fix one end of the pipeline, thereby further improving the fixing effect of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0022] Figure 2 It is a cross-sectional three-dimensional structural diagram of the utility model;

[0023] Figure 3 For this utility model Figure 2 A partial enlarged view of point A in the middle;

[0024] Figure 4 For this utility model Figure 2 A partial enlarged view of point B in the middle.

[0025] In the figure: 1. Base; 11. Support; 2. Bidirectional limit assembly; 21. Moving plate; 22. Fixed cylinder; 23. Outward expansion unit; 231. Extrusion rod; 232. Extrusion member; 2321. Fixed shell; 2322. Tightening block; 2323. Protrusion; 2324. Return spring; 24. Inward retraction unit; 241. Mounting frame; 242. Threaded rod; 243. Sliding sleeve; 244. Limit rod; 2441. Inclined portion; 2442. Anti-slip pad; 25. Pusher; 3. Support assembly; 31. Support ring; 32. Support platform; 33. Lower pressure plate; 34. Lifting member; 35. Vertical rod. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0027] See also Figure 1 - Figure 4 A positioning device for a pipe cutting machine includes a base 1, a top side of the base 1 is provided with a two-way limit assembly 2, and a side of the two-way limit assembly 2 is provided with a support assembly 3. The two-way limit assembly 2 is used to synchronously clamp the inner wall and outer wall of one end of the pipe, and the support assembly 3 is used to fix the other end of the pipe;

[0028] The bidirectional limiting assembly 2 includes a movable plate 21 disposed on the top of the base 1, a fixed cylinder 22 fixedly disposed on the top of the movable plate 21, an outward expansion unit 23 disposed on the side wall of the fixed cylinder 22, and an inward retraction unit 24 disposed outside the outward expansion unit 23;

[0029] The support assembly 3 includes a support ring 31 disposed on one side of the top of the base 1 , a support platform 32 fixedly disposed on the inner wall of the support ring 31 , and a lower pressure plate 33 disposed on the top of the support platform 32 .

[0030] Among them, supports 11 are fixedly connected to the bottom corners of the base 1.

[0031] Among them, the bidirectional limit assembly 2 also includes a pusher 25 arranged on the top of the base 1, and the end of the output shaft of the pusher 25 is fixedly connected to the side of the movable plate 21. Preferably, the pusher 25 is an electric push rod, and a slide rail is provided at the bottom of the movable plate 21.

[0032] The outward expansion unit 23 includes an extrusion rod 231 disposed at the middle portion of the inner side of the fixed cylinder 22 and an extrusion member 232 disposed outside the extrusion rod 231.

[0033] The extruding member 232 includes a fixed shell 2321 mounted on the side wall of the fixed cylinder 22 , a pressing block 2322 movably arranged inside the fixed shell 2321 , a protrusion 2323 arranged on the surface of the pressing block 2322 , and a return spring 2324 arranged on the top of the protrusion 2323 .

[0034] One end of the extrusion rod 231 is in a conical structure, and one end of the pressing block 2322 is provided with an oblique surface adapted to the conical structure of the extrusion rod 231 .

[0035] Among them, the retraction unit 24 includes a mounting bracket 241 installed on the top of the movable plate 21, a threaded rod 242 threadedly connected to the side wall of the mounting bracket 241, a sliding sleeve 243 threadedly connected to the outside of the threaded rod 242, and a limiting rod 244 installed on the outer surface of the sliding sleeve 243. There are multiple groups of limiting rods 244, and multiple groups of limiting rods 244 are arranged in a circular array on the outside of the fixed cylinder 22. The threaded rod 242 and the extrusion rod 231 are integrally formed. Preferably, the limiting rod 244 is made of elastic metal material, and when it contacts the pipe wall of the pipe, it can deform according to the pipe diameter size.

[0036] The inner wall of the limiting rod 244 on the side facing the fixing tube 22 is provided with an inclined portion 2441 , and an anti-slip pad 2442 is provided on the inclined portion 2441 .

[0037] A lifting member 34 is provided at the bottom of the support ring 31 , and a vertical rod 35 is installed on the top of the lower pressure plate 33 . Preferably, the vertical rod 35 is threadedly connected to the top wall of the support ring 31 , and the lifting member 34 is a cylinder.

[0038] When the present invention is in use, firstly one end of the pipe to be cut is passed through the inside of the support ring 31, and then is sleeved on the outside of the fixed cylinder 22. By rotating the vertical rod 35, the lower pressure plate 33 is pushed to cooperate with the support platform 32 to limit and fix one end of the pipe. Then, by rotating the threaded rod 242, the threaded rod 242 pushes the extrusion rod 231 to move toward the inside of the fixed cylinder 22. Since one end of the extrusion rod 231 is a tapered structure and one end of the tightening block 2322 is provided with an oblique cut surface, when one end of the extrusion rod 231 contacts the tightening block 2322, the tightening block 2322 will be pressed against the extrusion rod 231. The pressure rod 231 moves toward the outside of the fixed cylinder 22 under the push of the pressure rod 231, thereby fixing the inner wall of the pipe. When the threaded rod 242 rotates, the sleeve 243 will slide along the length direction of the threaded rod 242 under the action of the threaded pair, thereby pushing the limiting rod 244 to move toward the end of the pipe. Since the limiting rod 244 is made of elastic metal and its inner wall is provided with an inclined portion 2441, when the limiting rod 244 contacts the pipe, the outer wall of the pipe will be limited and fixed. By synchronously limiting the inner and outer walls of the pipe, shaking during cutting is avoided, thereby improving the cutting effect.

[0039] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A positioning device for a pipe cutting machine, comprising a base (1), characterized in that: A bidirectional limiting component (2) is provided on one side of the top of the base (1), and a supporting component (3) is provided on the side of the bidirectional limiting component (2); The bidirectional limiting assembly (2) comprises a movable plate (21) arranged on the top of the base (1), a fixed cylinder (22) fixedly arranged on the top of the movable plate (21), an outward expansion unit (23) arranged on the side wall of the fixed cylinder (22), and an inward retraction unit (24) arranged outside the outward expansion unit (23); The support assembly (3) comprises a support ring (31) arranged on one side of the top of the base (1), a support platform (32) fixedly arranged on the inner wall of the support ring (31), and a lower pressure plate (33) arranged on the top of the support platform (32).

2. A positioning device for a pipe cutting machine according to claim 1, characterized in that: Supports (11) are fixedly connected to the bottom corners of the base (1).

3. A positioning device for a pipe cutting machine according to claim 2, characterized in that: The bidirectional limiting assembly (2) further comprises a pushing member (25) arranged on the top of the base (1), and the output shaft end of the pushing member (25) is fixedly connected to the side surface of the movable plate (21).

4. A positioning device for a pipe cutting machine according to claim 3, characterized in that: The outward expansion unit (23) comprises an extrusion rod (231) arranged at the middle portion of the inner side of the fixed cylinder (22), and an extrusion piece (232) arranged outside the extrusion rod (231); The extrusion member (232) comprises a fixed shell (2321) mounted on the side wall of the fixed cylinder (22), a pressing block (2322) movably arranged on the inner side of the fixed shell (2321), a protrusion (2323) arranged on the surface of the pressing block (2322), and a return spring (2324) arranged on the top of the protrusion (2323).

5. A positioning device for a pipe cutting machine according to claim 4, characterized in that: One end of the extrusion rod (231) is in a conical structure, and one end of the pressing block (2322) is provided with an oblique cut surface adapted to the conical structure of the extrusion rod (231).

6. A positioning device for a pipe cutting machine according to claim 5, characterized in that: The retracting unit (24) comprises a mounting frame (241) mounted on the top of the movable plate (21), a threaded rod (242) threadedly connected to the side wall of the mounting frame (241), a sliding sleeve (243) threadedly connected to the outside of the threaded rod (242), and a limiting rod (244) mounted on the outer surface of the sliding sleeve (243). The limiting rods (244) are provided in multiple groups, and the multiple groups of limiting rods (244) are arranged in a circular array on the outside of the fixed cylinder (22). The threaded rod (242) and the extrusion rod (231) are integrally formed.

7. A positioning device for a pipe cutting machine according to claim 6, characterized in that: An inner wall of the limiting rod (244) on a side opposite to the fixed cylinder (22) is provided with an inclined portion (2441), and an anti-slip pad (2442) is provided on the inclined portion (2441).

8. The positioning device for a pipe cutting machine according to claim 1, characterized in that: A lifting member (34) is provided at the bottom of the support ring (31), and a vertical rod (35) is installed at the top of the lower pressing plate (33).

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