Threaded pipe end polishing device

Abstract

The utility model provides a threaded pipe end polishing device which comprises a pipe fitting supporting unit, a rotating frame and a polishing head, the rotating frame comprises a rotating arm, the polishing head is fixed at the outer end of the rotating arm, and the polishing head can move in the length direction of the rotating arm; the polishing head comprises an end face grinding head, the two ends of the end face grinding head extend outwards to form connecting shafts respectively, and the outer pipe wall grinding head and the inner pipe wall grinding head are arranged at the two ends of the end face grinding head respectively and arranged on the two sides of the pipe wall of the threaded pipe respectively. The polishing motor is arranged in the rotating center of the rotating frame, an output shaft of the polishing motor is in transmission connection with the connecting shaft, and an output shaft of a rotating motor is in transmission connection with the rotating frame. The rotating frame is adopted to drive the polishing head to rotate, meanwhile, the inner pipe wall grinding head and the outer pipe wall grinding head on the polishing head are used for polishing all directions of the pipe wall at the same time, manpower and machining time are saved, and meanwhile the situation that the end polishing effect is reduced due to the fact that rubber materials are turned over in the polishing process is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to threaded pipe processing field especially, it relates to a threaded pipe end polishing device. 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 mold 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 manually by using an angle grinder, but this method is time-consuming and labor-intensive. In some factories, an end face polishing device is placed, but during the polishing process, the plastic material has high toughness and plastic deformation ability, and during the polishing process, the plastic material is folded inward or outward of the pipe to form new burrs, which affects subsequent processing and the quality of the finished product. SUMMARY

[0003] Therefore, the utility model aims at providing a threaded pipe end polishing device to reduce the generation of new burrs during polishing.

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

[0005] A threaded pipe end polishing device, comprising a pipe fitting support unit, a rotating frame, and a polishing head, the threaded pipe is placed on the support unit, and the rotation axis of the rotating frame is parallel to the length direction of the threaded pipe, the rotating frame extends outwardly along the radial direction to form a rotating arm, the polishing head is detachably fixed to the outer end of the rotating arm, and the polishing head can move along the length direction of the rotating arm;

[0006] The polishing head comprises an end face grinding head, the end face grinding head extends outwardly at both ends to form a connecting shaft, an outer pipe wall grinding head and an inner pipe wall grinding head are respectively arranged at both ends of the end face grinding head, and the inner pipe wall grinding head and the outer pipe wall grinding head are respectively arranged on both sides of the threaded pipe wall;

[0007] A polishing motor is arranged at the rotation center of the rotating frame, the output shaft of the polishing motor is in transmission connection with the connecting shaft, and the output shaft of a rotating motor is in transmission connection with the rotating frame.

[0008] Furthermore, the polishing head comprises a fixing frame, both ends of the connecting shaft are in rotation connection with the fixing frame, one side of the rotating arm is provided with a gear shaft, a gear is coaxially connected to the connecting shaft, the gear is in transmission connection with the gear shaft, and the gear can move along the length direction of the gear shaft.

[0009] Further, the fixed frame extends two limiting sheets in the direction of the rotating arm, the limiting sheets are screwed with a jackscrew, the rotating arm is arranged between the two limiting sheets, and the jackscrew can tightly abut on the rotating arm.

[0010] Further, the outer tube wall grinding head and the inner tube wall grinding head are respectively sleeved on the end face grinding head, and the outer tube wall grinding head and the inner tube wall grinding head can move along the axial direction of the connecting shaft.

[0011] Further, the connecting shaft is provided with a stop edge at each end, a compression spring is sleeved on each end of the connecting shaft, one end of the compression spring abuts on the stop edge, and the other end abuts on the outer tube wall grinding head or the inner tube wall grinding head.

[0012] Further, the outer tube wall grinding head and the inner tube wall grinding head are respectively fixed 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 tube wall grinding head and the inner tube wall grinding head, the end portion of the end face grinding head can extend into the containing cavity, and the guide portion is sleeved on the connecting shaft.

[0013] Further, the support unit comprises two roller groups, and the axes of the rollers in the two roller groups are arranged in a V shape.

[0014] Further, the rotating frame is arranged on a lifting platform, so that the rotating frame can move along the vertical direction.

[0015] Further, the rotating frame comprises a gear ring, the rotating arm is fixedly arranged on the gear ring, a bushing is fixedly arranged on the lifting platform, the gear ring is sleeved on the bushing, and the output shaft of the rotating motor is in transmission connection with the gear ring.

[0016] Further, one end of the rotating shaft of the gear shaft is arranged at the end portion of the bushing, and the output shaft of the polishing motor is in transmission connection with the rotating shaft of the gear shaft through two bevel gears.

[0017] Compared with the prior art, the threaded pipe end polishing device has the following advantages:

[0018] The rotating frame and the polishing head are driven to rotate, the inner and outer tube wall grinding heads on the polishing head are used to polish each direction of the tube wall at the same time, manpower and processing time are saved, and the polishing effect of the end portion is prevented from being reduced due to the folding of the rubber material in the polishing process.

[0019] The compression spring arranged on the polishing head enables the inner and outer tube wall grinding heads to move along the axial direction, and the centering difficulty between the lifting platform and the threaded pipe is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings, which form a part of this patent, are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and serve to explain the principles of the present application. The drawings are not to scale. In the drawings:

[0021] Figure 1 It is a whole structure schematic diagram of the threaded pipe polishing device;

[0022] Figure 2 It is a polishing head and rotating arm cooperation structure schematic diagram;

[0023] Figure 3 It is a rotating frame and bushing cooperation structure schematic diagram;

[0024] Figure 4 It is a polishing head structure schematic diagram;

[0025] Figure 5 It is a polishing head explosion schematic diagram;

[0026] Figure 6 It is a polishing head internal structure sectional view.

[0027] Legend:

[0028] 1-supporting unit; 2-rotating frame; 21-lifting platform; 22-bushing; 23-tooth ring; 24-rotating arm; 25-gear; 26-tooth shaft; 3-polishing head; 31-end face grinding head; 311-connection shaft; 312-stop edge; 32-outer tube wall grinding head; 33-inner tube wall grinding head; 34-guide sleeve; 341-guide part; 342-receiving cavity; 343-connection part; 35-expanding opening; 36-grinding gap; 37-fixing frame; 371-limiting sheet; 38-pressing spring; 39-cross wheel. DETAILED DESCRIPTION

[0029] 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.

[0030] In the description of the utility model, it needs to understand that the orientation or positional relation indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or positional relation based on the drawing shown, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, 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 features. In the description of the utility model, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0031] In the description of the utility model, it needs to be explained 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 inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood through specific circumstances.

[0032] The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0033] The threaded pipe end polishing device provided by the utility model, comprising a pipe support unit 1, a rotating frame 2 and a polishing head 3, the support unit 1 includes two oppositely arranged roller groups, and the axes of the rollers in the two roller groups are arranged in a V shape, the threaded pipe can be placed on the two roller groups, and the threaded pipe moves along the axial direction by the roller groups, those skilled in the art should know that the roller groups can be driven by a motor to make the threaded pipe move, or the operator can push the threaded pipe to move, so that the threaded pipe moves to the predetermined position.

[0034] The rotating frame 2 is placed on the lifting platform 21, and the height of the rotating frame 2 can be adjusted according to the height of the center of the threaded pipe by those skilled in the art, and in the embodiment, the movement of the lifting platform 21 is controlled by a hydraulic cylinder. The rotating frame 2 comprises a bushing 22 fixed to a support block, and in the embodiment, the bushing 22 is sleeved with a gear ring 23, the gear ring 23 can rotate around the axis of the bushing 22, the gear ring 23 extends outwardly along the radial direction to form a rotating arm, the polishing head 3 is detachably fixed to 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.

[0035] 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 grinding 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 of the threaded pipe to be machined, 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, and in the embodiment, in order to make the polishing head 3 more convenient to cope with pipe walls with 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 extend outwardly to form connecting shafts 311 respectively, the inner pipe wall grinding head 33 and the outer pipe wall grinding head 32 are fixed to a guide sleeve 34 respectively, the guide sleeve 34 comprises a guide part 341, a receiving 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 form a connecting shaft 311, the guide part 341 is slidingly connected with the connecting shaft 311, the end of the end face grinding head 31 can extend into the receiving cavity 342, and a stop edge 312 is fixed to 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, and in the 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 to 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 sliding between the connecting shaft 311 and the guide sleeve 34.

[0036] In order to facilitate the threaded pipe to be machined part into the outer tube wall grinding head 32 and inner tube wall grinding head 33 between, the inner tube wall grinding head 33 near the outer tube wall grinding head 32 one end is spherical, outer tube wall grinding head 32 outer edge is provided with chamfer, and the chamfer and spherical surface cooperate to form flared opening 35 towards the outside, when the threaded pipe wall into the flared opening 35, outer tube wall grinding head 32 and inner tube wall grinding head 33 can be through the spherical surface and chamfer force outward movement, at the same time in the processing process, through the inner tube wall grinding head 33 spherical surface avoids the arc of the inner wall of the pipeline. By the outer tube wall grinding head 32 against the outer tube wall plane and the spherical surface of the inner tube wall grinding head 33 to the outer, inner side surface of the pipe wall polishing, so as to polish the pipe end outwardly folded gum material. In this embodiment, one end of the connecting shaft 311 is prismatic, when the polishing head 3 is fixed on the rotating shaft of the angle grinder or hand drill, the worker can polish the pipe end by hand.

[0037] In this embodiment, the polishing head 3 further comprises a fixed frame 37, the fixed frame 37 is shaped like a Chinese character, the end face grinding head 31, outer tube wall grinding head 32 and inner tube wall grinding head 33 are placed in the fixed frame, the fixed frame 37 extends two limit pieces 371 towards the rotating arm direction, the limit piece 371 is screwed with a jackscrew, the rotating arm is placed between the two limit pieces 371, the jackscrew can tightly abut on the rotating arm, so that the fixed frame 37 is fixedly connected with the rotating arm. The prismatic part of the connecting shaft 311 is coaxially connected with a gear 25, a gear shaft 26 is in transmission connection with the gear 25, and the gear 25 can move along the length direction of the gear shaft 26, in this embodiment, the fixed frame is provided with an opening on the side towards the bushing, the gear shaft can pass through the opening, so as to prevent the fixed frame from interfering with the gear shaft during adjustment, meanwhile, a cross wheel 39 is rotatably connected on the bottom of the fixed frame, the gear, the cross wheel and the gear shaft are in meshing sequence, realizing the transmission connection between the gear shaft and the gear. The end of the gear shaft 26 extends towards the bushing 22, the output shaft of a polishing motor (not shown in the figure) is in transmission connection with the gear shaft 26, optionally, the polishing motor can be fixed on the lifting platform 21, the transmission shaft passes through the bushing 22, one end of the transmission shaft is coaxially connected with the output shaft of the polishing motor, the other end is in transmission connection with the gear shaft 26 through the bevel gear 25, so that the polishing motor drives the polishing head 3 to rotate.

[0038] In the working process, the height of the lifting platform 21 is adjusted according to the axial height of the threaded pipe, when the threaded pipe is transported to the predetermined position, the end face grinding head 31 is abutted on the end face of the threaded pipe, the inner and outer pipe wall grinding heads are abutted on the pipe 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 pipe 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 matched. In the rotating process, due to the action of the compression spring 38, the inner and outer pipe wall grinding heads 32 can move axially along the end face grinding head 31, so that the inner and outer pipe wall grinding heads 32 are always abutted on the pipe wall, and the centering difficulty of the rotating frame 2 and the threaded pipe is reduced.

[0039] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A threaded tube end finishing device characterized by: The polishing head comprises an end face grinding head, two connecting shafts respectively extending outward from two ends of the end face grinding head, and an outer pipe wall grinding head and an inner pipe wall grinding head respectively arranged at two ends of the end face grinding head and respectively arranged at two sides of a pipe wall of the threaded pipe. The polishing motor is arranged at a rotation center of the rotating frame, an output shaft of the polishing motor is in transmission connection with the connecting shaft, and an output shaft of a rotating motor is in transmission connection with the rotating frame. The polishing head comprises a fixing frame, two ends of the connecting shaft are respectively in rotation connection with the fixing frame, one side of the rotating arm is provided with a gear shaft, a gear coaxially connected with the connecting shaft is arranged on the connecting shaft, the gear is in transmission connection with the gear shaft, and the gear can move along the length direction of the gear shaft.

2. A threaded pipe end polishing apparatus as defined in claim 1, wherein: The fixing frame extends two limiting sheets in the direction of the rotating arm, the limiting sheets are respectively screwed with jackscrews, the rotating arm is arranged between the two limiting sheets, and the jackscrews can tightly abut on the rotating arm.

3. A threaded pipe end polishing apparatus as defined in claim 2, wherein: The outer pipe wall grinding head and the inner pipe wall grinding head are respectively sleeved on the end face grinding head, and the outer pipe wall grinding head and the inner pipe wall grinding head can respectively move along the axial direction of the connecting shaft.

4. A threaded pipe end polishing apparatus as defined in claim 1, wherein: The connecting shaft is respectively provided with a stop edge at two ends, the connecting shaft is respectively sleeved with a compression spring at two ends, one end of the compression spring abuts on the stop edge, and the other end abuts on the outer pipe wall grinding head or the inner pipe wall grinding head.

5. A threaded pipe end polishing apparatus as defined in claim 4, wherein: The outer pipe wall grinding head and the inner pipe wall grinding head are respectively fixed on a guide sleeve, the guide sleeve comprises a guide part, a containing cavity and a connecting part, the connecting part is fixedly connected with end faces of the outer pipe wall grinding head and the inner pipe wall grinding head, the end part of the end face grinding head can extend into the containing cavity, and the guide part is sleeved on the connecting shaft.

6. A threaded pipe end polishing apparatus as defined in claim 5, wherein: The supporting unit comprises two roller groups, and the axes of the rollers in the two roller groups are arranged in a V shape.

7. A threaded pipe end polishing apparatus as defined in claim 1 wherein: The rotating frame is arranged on a lifting platform, so that the rotating frame can move along the vertical direction.

8. A threaded pipe end polishing apparatus as defined in claim 1, wherein: The rotating frame comprises a gear ring, the rotating arm is fixed on the gear ring, a bushing is fixed on the lifting platform, the gear ring is sleeved on the bushing, and an output shaft of the rotating motor is in transmission connection with the gear ring.

9. A threaded pipe end polishing apparatus as defined in claim 2 wherein: One end of the rotating shaft of the gear shaft is arranged at the end part of the bushing, and the output shaft of the polishing motor and the rotating shaft of the gear shaft are in transmission connection through two bevel gears.

10. A threaded pipe end polishing apparatus as defined in claim 9, wherein: ​

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