Threaded pipe end polishing head

Abstract

The utility model provides a threaded pipe end portion polishing head which comprises an end face grinding head, an outer pipe wall grinding head and an inner pipe wall grinding head which are coaxially arranged, the outer pipe wall grinding head and the inner pipe wall grinding head are respectively arranged on the end face grinding head in a sleeved mode, and a grinding gap used for containing the end face of the pipe wall of a threaded pipe is reserved between the inner pipe wall grinding head and the outer pipe wall grinding head. The outer pipe wall grinding head can abut against the outer wall of the threaded pipe, and the inner pipe wall grinding head can abut against the inner wall of the threaded pipe. The end face grinding head, the outer pipe wall grinding head and the inner pipe wall grinding head which are matched with one another are adopted to polish the end face of the threaded pipe and the inner wall and the outer wall of the end at the same time, so that in the process of polishing the end face of the threaded pipe, outwards-turned plastic materials can be polished away by the inner pipe wall grinding head and the outer pipe wall grinding head, the end of a pipe fitting can be polished to be flat in the single machining process, and the machining efficiency is improved. The threaded pipe polishing efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to threaded pipe processing field, especially a threaded pipe end polishing head. BACKGROUND

[0002] In the production of threaded pipe, the threaded pipe is continuously formed from the equipment by being wound into a tubular shape by a die or a steel band, and the threaded pipe is cut by a cutting device to obtain a pipe fitting of a predetermined length, but burrs are easily generated on the end face of the threaded pipe during the cutting process, and the end face needs to be polished, in the prior art, polishing is usually performed by manually holding an angle grinder or an end face polishing device, but during the polishing process of the angle grinder, the plastic material of the threaded pipe is easily folded inward or outward, which requires the worker to timely adjust the angle of the angle grinder, thereby reducing the polishing efficiency, and the dedicated polishing device also easily has the phenomenon of folded and residual plastic material, and therefore, a polishing head capable of solving the above problems is needed. SUMMARY

[0003] Therefore, the utility model aims at providing a threaded pipe end polishing head to improve the polishing efficiency.

[0004] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0005] A threaded pipe end polishing head, comprising a face grinding head, an outer pipe wall grinding head and an inner pipe wall grinding head arranged coaxially, the outer pipe wall grinding head and the inner pipe wall grinding head are respectively sleeved on the face grinding head, and a polishing gap for accommodating the end face of the pipe wall of the threaded pipe is left between the inner pipe wall grinding head and the outer pipe wall grinding head, the outer pipe wall grinding head can abut against the outer wall of the threaded pipe, and the inner pipe wall grinding head can abut against the inner wall of the threaded pipe.

[0006] Further, the end of the outer pipe wall grinding head close to the inner pipe wall grinding head is provided with a polishing surface capable of abutting against the outer wall of the threaded pipe.

[0007] Further, the end of the inner pipe wall grinding head close to the outer pipe wall grinding head is an arc surface.

[0008] Further, the outer pipe wall grinding head and the inner pipe wall grinding head can respectively move along the axial direction of the face grinding head, the outer edge of the outer pipe wall grinding head is provided with a chamfer, the end of the inner pipe wall grinding head close to the outer pipe wall grinding head is a spherical surface, and the chamfer and the spherical surface cooperatively form an expanded opening with the flared opening facing the outer side.

[0009] Further, the outer pipe wall grinding head is fixedly arranged on a guide sleeve, the guide sleeve comprises a guide portion, a containing cavity and a connecting portion, the connecting portion is fixedly connected with the end face of the outer pipe wall grinding head, one end of the face grinding head extends outward along the axial direction to form a connecting shaft, the guide portion is slidingly connected with the connecting shaft, and the end portion of the face grinding head can extend into the containing cavity.

[0010] Furthermore, the inner tube wall grinding head is fixed on a guide sleeve, and the guide sleeve includes a guide part, an accommodating cavity and a connecting part. The connecting part is fixedly connected to the end face of the inner tube wall grinding head. One end of the end face grinding head extends axially outward to form a connecting shaft. The guide part is slidably connected to the connecting shaft, and the end of the end face grinding head can extend into the accommodating cavity.

[0011] Furthermore, a rib is provided on the connecting shaft of the end face grinding head, a compression spring is sleeved on the connecting shaft, and two ends of the compression spring respectively abut against the rib and the guide sleeve.

[0012] Furthermore, the guide sleeve is connected to the connecting shaft via a sliding key or a guide flat key.

[0013] Compared with the prior art, the threaded pipe end polishing head described in the present invention has the following advantages:

[0014] The utility model adopts the end face grinding head, the outer tube wall grinding head and the inner tube wall grinding head which cooperate with each other to polish the end face of the threaded pipe and the inner and outer walls of the end simultaneously. In the process of grinding the end face of the threaded pipe, the plastic material turned outward can be ground off by the inner and outer tube wall grinding heads, so that the end of the pipe fitting can be polished flat in a single process, thereby improving the polishing efficiency of the threaded pipe.

[0015] Springs are used to hold the inner and outer pipe wall grinding heads against each other. This allows the grinding heads to rest against the pipe wall at the end of the threaded pipe at any time if the polishing heads deviate during operation, preventing excessive polishing from affecting product quality. Furthermore, the polishing head can avoid protruding parts of the threaded pipe wall during the grinding process.

[0016] By setting an accommodating cavity in the guide sleeve, when the inner and outer pipe wall grinding heads move, the end face grinding head can contact the end face of the pipe fitting, ensuring the end face polishing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of the threaded pipe polishing device;

[0019] Figure 2 This is a schematic diagram of the coordination structure between the polishing head and the rotating arm;

[0020] Figure 3 It is a schematic diagram of the matching structure between the rotating frame and the bushing;

[0021] Figure 4 Schematic diagram of the polishing head structure;

[0022] Figure 5 Figure 2 is an exploded view of the polishing head;

[0023] Figure 6 Figure 3 is a sectional view of the internal structure of the polishing head.

[0024] Reference signs list:

[0025] 1 - support unit; 2 - rotating frame; 21 - lifting platform; 22 - bushing; 23 - gear ring; 24 - rotating arm; 25 - gear; 26 - gear shaft; 3 - polishing head; 31 - end face grinding head; 311 - connecting shaft; 312 - stopper; 32 - outer tube wall grinding head; 33 - inner tube wall grinding head; 34 - guide sleeve; 341 - guide part; 342 - accommodating cavity; 343 - connecting part; 35 - expansion opening; 36 - grinding gap; 37 - fixing frame; 371 - limiting piece; 38 - compression spring; 39 - cross wheel. DETAILED DESCRIPTION

[0026] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0027] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0028] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between the two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0030] The threaded pipe end polishing device, including pipe support unit 1, rotating frame 2 and polishing head 3, the support unit 1 includes two roller groups oppositely arranged, and the axis of the roller in the two roller groups is arranged in V shape, the threaded pipe can be placed on the two roller groups, and the threaded pipe is moved along the axial direction by the roller group, and those skilled in the art should know that the roller group can be driven by the motor to make the threaded pipe move, and the threaded pipe can also be moved by the operator to make the threaded pipe move to the predetermined position.

[0031] The rotating frame 2 is placed on the lifting platform 21, and those skilled in the art can adjust the height of the rotating frame 2 according to the height of the center of the threaded pipe, and optionally, the hydraulic cylinder is used to control the movement of the lifting platform 21 in the embodiment. The rotating frame 2 includes a bushing 22, and the bushing 22 is fixedly arranged on a support block. In the embodiment, the bushing 22 is provided with a gear ring 23, the gear ring 23 can rotate around the axis of the bushing 22, the gear ring 23 extends outward along the radial direction to form a rotating arm, and the polishing head 3 is detachably fixedly arranged at the end of the rotating arm. One side of the gear ring 23 is provided with a rotating motor (not shown in the figure), the output shaft of the rotating motor is engaged with the gear ring 23 through a gear 25, the rotating frame 2 is driven to rotate by the rotating motor, and the axial direction of the bushing 22 is parallel to the length direction of the threaded pipe.

[0032] The polishing head 3 comprises coaxially arranged end face grinding head 31, outer pipe wall grinding head 32 and inner pipe wall grinding head 33, the axis of the end face grinding head 31 is perpendicular to the pipe wall of the threaded pipe, the outer pipe wall grinding head 32 and the inner pipe wall grinding head 33 are left with a polishing gap 36 for accommodating the end face of the pipe wall of the threaded pipe, and when the threaded pipe moves to a predetermined position, the end face grinding head 31 can abut against the end face to be machined of the threaded pipe, the outer pipe wall grinding head 32 and the inner pipe wall grinding head 33 can abut against the outer wall and the inner wall of the pipe wall of the threaded pipe respectively, and optionally, the outer pipe wall grinding head 32 and the inner pipe wall grinding head 33 can be fixed on the end face grinding head 31 by a jackscrew, in this embodiment, in order to make the polishing head 3 more convenient to cope with pipe walls of different thicknesses, save the time for adjusting the distance between the outer pipe wall grinding head 32 and the inner pipe wall grinding head 33, and make the outer pipe wall grinding head 32 avoid the protrusions on the outer wall of the threaded pipe, the outer pipe wall grinding head 32 and the inner pipe wall grinding head 33 can move along the axial direction of the end face grinding head 31 respectively, specifically, the two ends of the end face grinding head 31 respectively extend outwardly to connect shafts 311, the inner pipe wall grinding head 33 and the outer pipe wall grinding head 32 are fixed on a guide sleeve 34 respectively, the guide sleeve 34 comprises a guide part 341, an accommodating cavity 342 and a connecting part 343, the connecting part 343 and the end face of the outer pipe wall grinding head 32 can be fixed by bonding, clamping or inlaying, one end of the end face grinding head 31 extends outwardly along the axial direction to the connecting shaft 311, the guide part 341 is slidingly connected with the connecting shaft 311, the end part of the end face grinding head 31 can extend into the accommodating cavity 342, and a stop edge 312 is fixed on the outer end of each connecting shaft 311, a compression spring 38 is sleeved on the connecting shaft 311, and the two ends of the compression spring 38 abut against the stop edge 312 and the guide sleeve 34 respectively, in this embodiment, in order to facilitate assembly, one of the stop edges 312 is synchronously formed with the connecting shaft 311, and the other stop edge 312 is fixed on the connecting shaft 311 by a jackscrew. The guide sleeve 34 and the connecting shaft 311 are connected by a sliding key or a guide flat key, so as to transmit torque and slide between the connecting shaft 311 and the guide sleeve 34.

[0033] In order to facilitate the part to be machined of the threaded pipe to enter between the outer pipe wall grinding head 32 and the inner pipe wall grinding head 33, one end of the inner pipe wall grinding head 33 close to the outer pipe wall grinding head 32 is spherical, the outer edge of the outer pipe wall grinding head 32 is provided with a chamfer, and the chamfer cooperates with the spherical surface to form an expanded opening 35 expanding outward, when the pipe wall of the threaded pipe abuts against the expanded opening 35, the outer pipe wall grinding head 32 and the inner pipe wall grinding head 33 can move outwardly under the force of the spherical surface and the chamfer, and in the machining process, the spherical surface of the inner pipe wall grinding head 33 avoids the curvature of the inner wall of the pipe. The outer pipe wall grinding head 32 abuts against the plane of the outer wall and the spherical surface of the inner pipe wall grinding head 33 to polish the outer and inner surfaces of the pipe wall, so as to polish the gum material folded outwardly on the end face of the pipe. In this embodiment, one end of the connecting shaft 311 is prismatic, when the polishing head 3 is fixed on the rotating shaft of an angle grinder or a hand drill, the worker can polish the end part of the pipe by hand.

[0034] In the embodiment, the polishing head 3 further comprises a fixed frame 37, the end face grinding head 31, the outer tube wall grinding head 32 and the inner tube wall grinding head 33 are arranged in the fixed frame, the fixed frame 37 extends two limiting sheets 371 towards the rotating arm, the limiting sheets 371 are screwed with a jackscrew, the rotating arm is arranged between the two limiting sheets 371, the jackscrew can tightly abut on the rotating arm, so that the fixed frame 37 is fixedly connected with the rotating arm. A gear 25 is coaxially connected with the prism portion of the connecting shaft 311, a gear shaft 26 is drivingly connected with the gear 25, and the gear 25 can move along the length direction of the gear shaft 26, in the embodiment, the fixed frame is provided with an opening on the side towards the bushing, the gear shaft can pass through the opening, so that the fixed frame does not interfere with the gear shaft during the adjustment, meanwhile, a cross wheel 39 is rotatably connected with the bottom of the fixed frame, the gear, the cross wheel and the gear shaft are sequentially meshed, so that the gear shaft is drivingly connected with the gear. The end portion of the gear shaft 26 extends towards the bushing 22, an output shaft of a polishing motor (not shown in the figure) is drivingly connected with the gear shaft 26, optionally, the polishing motor can be fixed on the lifting platform 21, a transmission shaft passes through the bushing 22, one end of the transmission shaft is coaxially connected with the output shaft of the polishing motor, and the other end is drivingly connected with the gear shaft 26 through the bevel gear 25, so that the polishing motor drives the polishing head 3 to rotate.

[0035] During the work, the height of the lifting platform 21 is adjusted according to the axial height of the threaded pipe, when the threaded pipe is conveyed to the predetermined position, the end face grinding head 31 abuts on the end face of the threaded pipe, the inner and outer tube wall grinding heads abut on the tube wall of the threaded pipe under the action of the compression spring 38, at this time, the rotating motor and the polishing motor are started, so that the polishing head 3 rotates along the tube wall, and the polishing process of one end is completed, then the pipe fitting can be adjusted, the "zigzag" roller group is arranged, and the polishing work of the two end faces of the threaded pipe is completed in the mode that the polishing devices are cooperated. During the rotation, the inner and outer tube wall grinding heads 32 can move axially along the end face grinding head 31 under the action of the compression spring 38, so that the inner and outer tube wall grinding heads 32 always abut on the tube wall, and the centering difficulty of the rotating frame 2 and the threaded pipe is reduced.

[0036] The above merely describes the preferred embodiment of the utility model, and is not used to limit the utility model, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A threaded pipe end polishing head, characterized by: It includes a coaxially arranged end face grinding head, an outer tube wall grinding head and an inner tube wall grinding head, and the outer tube wall grinding head and the inner tube wall grinding head are respectively sleeved on the end face grinding head, and a grinding gap for accommodating the end face of the threaded tube wall is left between the inner tube wall grinding head and the outer tube wall grinding head, the outer tube wall grinding head can be against the outer wall of the threaded tube, and the inner tube wall grinding head can be against the inner wall of the threaded tube.

2. A threaded pipe end polishing head according to claim 1, characterized in that: One end of the outer tube wall grinding head close to the inner tube wall grinding head is provided with a grinding surface that can abut against the outer wall of the threaded tube.

3. The threaded pipe end polishing head according to claim 1, characterized in that: One end of the inner tube wall grinding head close to the outer tube wall grinding head is a cambered surface.

4. The threaded pipe end polishing head according to claim 1, characterized in that: The outer tube wall grinding head and the inner tube wall grinding head can move axially along the end face grinding head respectively. The outer edge of the outer tube wall grinding head is provided with a chamfer. The end of the inner tube wall grinding head close to the outer tube wall grinding head is a spherical surface, and the chamfer cooperates with the spherical surface to form an expanded opening that flares outward.

5. A threaded pipe end polishing head according to any one of claims 1 to 4, characterized in that: The outer tube wall grinding head is fixed on a guide sleeve, which includes a guide part, an accommodating cavity and a connecting part. The connecting part is fixedly connected to the end face of the outer tube wall grinding head. One end of the end face grinding head extends axially outward to form a connecting shaft. The guide part is slidably connected to the connecting shaft, and the end of the end face grinding head can extend into the accommodating cavity.

6. A threaded pipe end polishing head according to any one of claims 1 to 4, characterized in that: The inner tube wall grinding head is fixed on a guide sleeve, which includes a guide part, an accommodating cavity and a connecting part. The connecting part is fixedly connected to the end face of the inner tube wall grinding head. One end of the end face grinding head extends axially outward to form a connecting shaft. The guide part is slidably connected to the connecting shaft, and the end of the end face grinding head can extend into the accommodating cavity.

7. The threaded pipe end polishing head according to claim 5, characterized in that: A rib is provided on the connecting shaft of the end face grinding head, and a compression spring is sleeved on the connecting shaft, with two ends of the compression spring respectively resting on the rib and the guide sleeve.

8. The threaded pipe end polishing head according to claim 5, characterized in that: The guide sleeve is connected to the connecting shaft via a sliding key or a guide flat key.

9. The threaded pipe end polishing head according to claim 6, characterized in that: A rib is provided on the connecting shaft of the end face grinding head, and a compression spring is sleeved on the connecting shaft, with two ends of the compression spring respectively resting on the rib and the guide sleeve.

10. The threaded pipe end polishing head according to claim 6, characterized in that: The guide sleeve is connected to the connecting shaft via a sliding key or a guide flat key.

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