Equipment for machining threads on surface of seamless steel pipe

Abstract

The utility model discloses equipment for machining threads on the surface of a seamless steel pipe, and relates to the technical field of steel pipe machining, in particular to the equipment for machining the threads on the surface of the seamless steel pipe. A positioning mechanism is arranged on the machine base and used for positioning a steel pipe, and the positioning mechanism comprises an outer positioning assembly, an inner positioning assembly and an inner positioning assembly, and the outer positioning assembly is arranged on the machine base and used for positioning the steel pipe from the outside; the inner positioning assembly is arranged in the steel pipe, is used for positioning the steel pipe from the inside, and comprises a barrel rod inserted into the steel pipe, a threaded rod which is slidably mounted in the barrel rod in a penetrating manner, a guide head fixed at the front end of the threaded rod, three supporting rods which are slidably mounted on the barrel rod in a penetrating manner and are circumferentially distributed, and supporting plates fixed at the outer ends of the supporting rods; and the outer positioning assembly is matched with the inner positioning assembly, so that the steel pipe can be internally and externally fixed, and deformation or displacement of the steel pipe in the machining process is effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipe processing, and specifically relates to a device for processing the surface threads of seamless steel pipes. Background Art

[0002] A threading machine, also known as an electric threading machine, an electric pipe cutting and threading machine, a wire winding machine, a pipe threading machine, is composed of a machine body, a motor, a reduction box, a pipe chuck, a die head, a cutter holder, a feed device, and a cooling system. When the existing threading machine works, the staff first puts the pipe to be processed with threads into the chuck, starts the switch, automatically cuts and threads, and at the same time the cooling system sprays oil for cooling. After that, the processing is completed and the pipe is taken out;

[0003] After checking the publication number: CN220462520U, a highly efficient threading machine for construction engineering is disclosed. In this technology, "a steel bar threading machine is disclosed, which includes a threading machine body. A threading mechanism for processing steel bars is arranged on the threading machine body. A cooling device for cooling steel bars is arranged on the threading machine body. An operation groove is opened on the threading machine body. A transport table is arranged on the threading machine body. A transport groove is opened on the top wall of the transport table, and the transport groove is communicated with the operation groove. A transport mechanism for transporting steel bars is arranged in the transport groove; a fixing mechanism for fixing steel bars is also arranged in the operation groove" and other technical solutions, and has technical effects such as "it is not necessary for the staff to manually transport the steel bars, and it is not necessary to stabilize the rear end of the steel bars during thread processing, thereby improving the processing efficiency of the steel bars";

[0004] The above solution fixes the required workpiece through a fixing mechanism. However, when processing pipes, especially long, large, or thin steel pipes, this fixing method may not be sufficient to provide enough stability. Moreover, if the clamping force of the fixture is uneven or too large, it is easy to cause local deformation of the steel pipe. Especially when processing thin-walled steel pipes, this deformation may be more obvious. Summary of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a device for processing the surface threads of seamless steel pipes, which has the characteristics of being able to perform double internal and external fixation on the steel pipe through the cooperation of an external positioning component and an internal positioning component, effectively preventing the steel pipe from deforming or shifting during the processing process.

[0006] To achieve the above purposes, the utility model is realized through the following technical solutions: A device for processing the surface threads of seamless steel pipes, including a machine base and a steel pipe. A threading machine is installed at one end of the top of the machine base. It is characterized in that: A positioning mechanism is arranged on the machine base and is used for positioning the steel pipe. The positioning mechanism includes:

[0007] An external positioning component, which is arranged on the machine base and is used for positioning the steel pipe from the outside;

[0008] Inner positioning component, which is arranged inside the steel pipe and used for positioning the steel pipe from the inside, including a cylindrical rod inserted into the inside of the steel pipe, a threaded rod slidably installed through the inside of the cylindrical rod, a guiding head fixed at the front end of the threaded rod, three struts arranged circumferentially and slidably installed through the cylindrical rod, a strut plate fixed at the outer end of the strut, a knob sleeve rotatably installed at the rear end of the cylindrical rod, and the inner wall of the knob sleeve is threadedly connected to the outer wall of the threaded rod.

[0009] Preferably, the inner positioning component further includes three spring plates circumferentially distributed and fixed on the outer wall of the cylindrical rod, and the rear ends of the spring plates are embedded into the corresponding struts.

[0010] Preferably, the inner positioning component further includes guiding strips fixed on the inner wall at the rear end of the cylindrical rod, and guiding grooves opened on the outer wall at the rear end of the threaded rod.

[0011] Preferably, the inner end of the strut is of an inclined surface structure, and the inclined surface on the inner end of the strut cooperates with the guiding head.

[0012] Preferably, the outer positioning component includes discs fixed at both ends of the top of the base, three sliding frames arranged circumferentially and slidably installed through the inside of the discs, clamping plates fixed at the inner ends of the sliding frames, a ring frame rotatably installed at the center of the disc, three connecting rods arranged circumferentially and pivotally connected to the surface of the ring frame, and the other ends of the connecting rods are pivotally connected to the sliding frames.

[0013] Preferably, the outer positioning component further includes a reinforcing frame fixed between the two end discs, a knob screw rod threadedly installed through the inside of the reinforcing frame, and the lower end of the knob screw rod is rotatably connected to the clamping plate. Beneficial effects

[0014] The utility model provides a device for processing threads on the surface of seamless steel pipes. Compared with the prior art, the following beneficial effects are achieved:

[0015] (1) After the steel pipe is positioned from the outside through the outer positioning component, the inner positioning component is inserted into the inside of the steel pipe, and then the knob sleeve is rotated to drive the threaded rod to move. The threaded rod pushes the strut to extend outwards through the guiding head, so that the strut plate on the strut supports the inner wall of the steel pipe, and further the steel pipe is positioned from the inside.

[0016] (2) By inserting the steel pipe through the outer positioning component, and then rotating the knob screw rod to drive the clamping plate, the clamping plate drives the ring frame to rotate through the connecting rod, and the ring frame drives the other two clamping plates to move synchronously through the other two connecting rods in cooperation with the other two sliding frames, so that the three clamping plates position the steel pipe from the outside. Description of the drawings

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

[0018] Figure 2This is a schematic structural diagram of the external positioning component in the present utility model;

[0019] Figure 3 This is a schematic structural diagram of the internal positioning component in the present utility model;

[0020] Figure 4 This is a schematic cross-sectional structural diagram of the internal positioning component in the present utility model.

[0021] In the figure: 1, machine base; 2, threading machine; 3, positioning mechanism; 31, external positioning component; 311, base; 312, disc; 313, carriage; 314, clamping plate; 315, ring frame; 316, connecting rod; 317, reinforcing frame; 318, knob screw rod; 32, internal positioning component; 321, barrel rod; 322, threaded rod; 323, guiding head; 324, support rod; 325, support plate; 326, knob sleeve; 327, spring plate; 328, guiding strip; 329, guiding groove; 4, steel pipe. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-4 , the present utility model provides a technical solution for a seamless steel pipe surface threading processing device: A seamless steel pipe surface threading processing device includes a machine base 1 and a steel pipe 4. One end of the top of the machine base 1 is provided with a threading machine 2. A positioning mechanism 3 is arranged on the machine base 1 and is used for positioning the steel pipe 4. The positioning mechanism 3 includes:

[0024] An external positioning component 31, which is arranged on the machine base 1 and is used for externally positioning the steel pipe 4;

[0025] An internal positioning component 32, which is arranged in the steel pipe 4 and is used for internally positioning the steel pipe 4. It includes a barrel rod 321 inserted into the interior of the steel pipe 4, a threaded rod 322 slidably installed through the interior of the barrel rod 321, a guiding head 323 fixed to the front end of the threaded rod 322, three support rods 324 slidably installed through the barrel rod 321 and distributed circumferentially, a support plate 325 fixed to the outer end of the support rod 324, a knob sleeve 326 rotatably installed at the rear end of the barrel rod 321, and the inner wall of the knob sleeve 326 is threadedly connected to the outer wall of the threaded rod 322.

[0026] In this implementation, after the steel pipe 4 is positioned from the outside through the outer positioning component 31, the inner positioning component 32 is inserted into the interior of the steel pipe 4. Then, the knob sleeve 326 is rotated to drive the threaded rod 322 to move. The threaded rod 322 pushes the support rod 324 to extend outward through the guide head 323, so that the support plate 325 on the support rod 324 supports the inner wall of the steel pipe 4, thereby positioning the steel pipe 4 from the inside.

[0027] Specifically, the inner positioning component 32 further includes three spring plates 327 that are circumferentially distributed and fixed to the outer wall of the barrel rod 321, and the rear ends of the spring plates 327 are embedded in the corresponding support rods 324.

[0028] In this embodiment, when the guide head 323 moves backward away from the support rod 324, the pressure of the spring plate 327 rebounding can push the support rod 324 to contract inward, so that the support plate 325 on the support rod 324 releases the fixation of the steel pipe 4.

[0029] Specifically, the inner positioning component 32 further includes a guide strip 328 fixed to the inner wall of the rear end of the barrel rod 321 and a guide groove 329 opened on the outer wall of the rear end of the threaded rod 322.

[0030] In this embodiment, the threaded rod 322 can be slidably connected to the barrel rod 321 through the cooperation of the guide groove 329 and the guide strip 328.

[0031] Specifically, the inner end of the support rod 324 is of an inclined surface structure, and the inclined surface on the inner end of the support rod 324 cooperates with the guide head 323.

[0032] In this embodiment, when the guide head 323 moves forward, it can push the support rod 324 to move outward.

[0033] Specifically, the outer positioning component 31 includes discs 312 fixed to both ends of the top of the base 311, three sliding frames 313 that are circumferentially distributed and slidably installed through the discs 312, clamping plates 314 fixed to the inner ends of the sliding frames 313, a ring frame 315 rotatably installed at the center of the disc 312, three connecting rods 316 that are circumferentially distributed and pivotally connected to the surface of the ring frame 315, and the other ends of the connecting rods 316 are pivotally connected to the sliding frames 313.

[0034] In this embodiment, by rotating the knob screw rod 318 to drive the clamping plate 314, the clamping plate 314 drives the ring frame 315 to rotate through the connecting rod 316. The ring frame 315 drives the other two clamping plates 314 to move synchronously through the other two connecting rods 316 in cooperation with the other two sliding frames 313, so that the three clamping plates 314 position the steel pipe 4 from the outside.

[0035] Specifically, the outer positioning component 31 further includes a reinforcing frame 317 fixed between the two end discs 312, a knob screw rod 318 that is threadedly installed through the reinforcing frame 317, and the lower end of the knob screw rod 318 is rotatably connected to the clamping plate 314.

[0036] In this embodiment, by rotating the knob screw rod 318, the three clamping plates 314 can be adjusted to move synchronously, so that the steel pipe 4 with different pipe diameters can be positioned from the outside.

[0037] The working principle and usage process of the present utility model are as follows: First, insert the steel pipe 4 through and into the outer positioning component 31 until one end of the steel pipe 4 is inserted into the threading machine 2. Then, drive the clamping plate 314 by rotating the knob screw rod 318. The clamping plate 314 drives the ring frame 315 to rotate through the connecting rod 316. The ring frame 315 drives the other two clamping plates 314 to move synchronously through the other two connecting rods 316 and the other two sliding frames 313, so that the three clamping plates 314 position the steel pipe 4 from the outside.

[0038] Then, insert the inner positioning component 32 into the inside of the steel pipe 4, and then rotate the knob sleeve 326 to drive the threaded rod 322 to move. The threaded rod 322 pushes the support rod 324 to extend outwards through the guide head 323, so that the support plate 325 on the support rod 324 supports the inner wall of the steel pipe 4, and further positions the steel pipe 4 from the inside. Finally, start the threading machine 2 to process the thread of the steel pipe 4.

[0039] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0040] Although the embodiments of the present utility model 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 utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A device for processing threads on the surface of a seamless steel pipe, comprising a machine base (1) and a steel pipe (4), wherein a threading machine (2) is installed at one end of the top of the machine base (1), and characterized in that: The machine base (1) is provided with a positioning mechanism (3) for positioning the steel pipe (4), and the positioning mechanism (3) comprises: An external positioning component (31) is disposed on the machine base (1) and is used to position the steel pipe (4) from the outside; An internal positioning assembly (32) is arranged in the steel pipe (4) and is used to position the steel pipe (4) from the inside, comprising a cylindrical rod (321) inserted into the steel pipe (4), a threaded rod (322) slidably installed and passing through the cylindrical rod (321), a guide head (323) fixed at the front end of the threaded rod (322), three circumferentially distributed support rods (324) slidably installed and passing through the cylindrical rod (321), a support plate (325) fixed at the outer end of the support rod (324), and a knob sleeve (326) rotatably installed at the rear end of the cylindrical rod (321), wherein the inner wall of the knob sleeve (326) is threadedly connected to the outer wall of the threaded rod (322).

2. The device for processing thread on the surface of a seamless steel pipe according to claim 1, characterized in that: The inner positioning assembly (32) further comprises three spring plates (327) fixed to the outer wall of the barrel rod (321) and distributed around the circumference, and the rear ends of the spring plates (327) are embedded in corresponding support rods (324).

3. The device for processing thread on the surface of seamless steel pipe according to claim 1, characterized in that: The inner positioning assembly (32) further comprises a guide strip (328) fixed to the inner wall of the rear end of the cylindrical rod (321), and a guide groove (329) formed on the outer wall of the rear end of the threaded rod (322).

4. The device for processing thread on the surface of seamless steel pipe according to claim 1, characterized in that: The inner end of the support rod (324) is a sloped structure, and the slope on the inner end of the support rod (324) matches the guide head (323).

5. The device for processing thread on the surface of seamless steel pipe according to claim 1, characterized in that: The external positioning assembly (31) comprises a disk (312) fixed at both ends of the top of the base (311), three circumferentially distributed slide frames (313) slidably installed and penetrating the inside of the disk (312), a clamping plate (314) fixed at the inner end of the slide frame (313), a ring frame (315) rotatably installed at the center of the disk (312), and three circumferentially distributed connecting rods (316) pivotally connected to the surface of the ring frame (315), and the other end of the connecting rod (316) is pivotally connected to the slide frame (313).

6. The device for processing thread on the surface of seamless steel pipe according to claim 5, characterized in that: The external positioning assembly (31) further comprises a reinforcement frame (317) fixed between the two end discs (312), a knob screw rod (318) threadedly installed passes through the reinforcement frame (317), and the lower end of the knob screw rod (318) is rotatably connected to the clamping plate (314).

Images