WO2024055450A1

WO2024055450A1 - Pipe grooving machine

Info

Publication number: WO2024055450A1
Application number: PCT/CN2022/138548
Authority: WO
Inventors: 陈卫东; 李传军; 孙敬伦; 夏传荣; 黄永红
Original assignee: 玫德集团有限公司
Priority date: 2022-09-16
Filing date: 2022-12-13
Publication date: 2024-03-21
Also published as: CN218283333U

Abstract

A pipe grooving machine, comprising a machining mechanism for grooving a pipe (10). The machining mechanism comprises a notched wheel (7), a cam (1) and at least one backpressure wheel (2, 21, 22), wherein the cam is suitable for applying pressure to an outer wall surface of the pipe during grooving; the notched wheel is a main power wheel, and supports an inner wall surface of the pipe during grooving and pulls the pipe to perform a circular rotational motion; a contact point between the cam and the pipe and a contact point between the notched wheel and the pipe are located on the same radius line of the cross section of the pipe; the backpressure wheel is arranged on the side of the cam away from the pipe, and during grooving, the backpressure wheel applies pressure to the cam for support, and rotates along with the cam; and the thickness of the backpressure wheel is not less than that of the cam. The pipe grooving machine is an anti-fatigue model which can withstand high strength and great pressure, and has a relatively long service life and high machining accuracy.

Description

A pipe grooving machine

Cross-references to related applications

This disclosure is based on the Chinese application with application number 202222454687.9 and the filing date is September 16, 2022, and claims its priority. The disclosure content of the Chinese application is hereby incorporated into this disclosure as a whole.

Technical field

The present disclosure relates to the field of mechanical processing technology, in particular to a pipe grooving machine.

Background technique

In order to meet the pipe connection requirements of grooved clamp pipe fittings, the steel pipe port groove processing machine needs to roll grooves on the circumferential surface of the circumferential outer wall of the connected steel pipe port. The commonly used mechanical rolling wheel set at present is composed of a set of power concave wheels and a set of pressing cams. The concave wheels are installed on the inner wall of the steel pipe, and the other cam is installed on the outer wall of the steel pipe at the position corresponding to the groove. The cam presses down and rolls out the groove of the steel pipe port.

However, since the geometric size and diameter of the cam is smaller than that of the concave wheel, the outward bell mouth of the tube mouth will inevitably expand during the molding process, which affects the quality of the finished product. At the same time, because the camshaft is relatively thin, when the bearing is stressed too much, the service life of the cam is often seriously affected, which in turn affects the quality of the groove. This has become a long-term problem that has plagued this type of equipment in pipe groove forming operations.

public content

The technical problem to be solved by this disclosure is that the pipe grooving machine in the prior art has poor finished product quality and a low cam life. Instead, it provides a pipe grooving machine with high finished product quality and a long cam and even the overall life of the grooving machine.

In order to solve the above technical problems, the technical solutions adopted by this disclosure are as follows:

A pipe grooving machine used for grooving pipes, including:

A support mechanism for supporting the pipe, the support mechanism including a plurality of support wheels, the support wheels being used to support and drive the pipe to rotate around its axis;

The main head is fixedly installed on the support mechanism;

A processing mechanism is used for grooving the pipe. The processing mechanism includes a cam and a concave wheel. The cam is adapted to apply pressure to the outer wall surface of the pipe during grooving. The concave wheel is suitable for grooving. The groove exerts pressure on the inner wall surface of the pipe and provides rotational power for the pipe; the contact point of the cam and the pipe and the contact point of the concave wheel and the pipe are located at the cross section of the pipe. on the same radius line.

In a possible design, the processing mechanism further includes at least one back pressure wheel, the back pressure wheel is disposed on a side of the cam away from the pipe, and the back pressure wheel is adapted to press the groove when Apply pressure support to the cam and follow the rotation of the cam. The thickness of the back pressure wheel is not less than the thickness of the cam.

In a possible design, the number of the back pressure wheel is one, the back pressure wheel is a first back pressure wheel, and the wheel cores of the first back pressure wheel, the cam, and the concave wheel are located on the same on flat surface.

In one possible design, a first annular groove with a size matching the cam is formed on the surface of the first back pressure wheel, and the cam is embedded in the first annular groove.

In one possible design, the number of the back-pressure wheels is three, and the three back-pressure wheels are respectively one second back-pressure wheel and two third back-pressure wheels, and the two third back-pressure wheels are The wheels jointly follow the rotation of the cam and provide support force to the cam. The second back pressure wheel is arranged on the side of the third back pressure wheel away from the cam. The second back pressure wheel supports two The third back pressure wheel rotates and is adapted to provide supporting force to the two third back pressure wheels when pressing grooves.

In one possible design, the two third back-pressure wheels are symmetrical to the plane formed by the wheel core of the cam and the wheel core of the concave wheel.

In a possible design, the wheel cores of the second back pressure wheel, the cam, and the concave wheel are located on the same plane.

In one possible design, the surfaces of the two third back pressure wheels are each formed with a second annular groove with a size that matches the cam, and the cam is embedded in the two second rings. in the groove.

In a possible design, the second back pressure wheel is formed with an annular flange that matches the second annular groove, and the annular flange is embedded in the two first annular grooves. in two annular grooves.

In a possible design, the concave wheel is sleeved on the shaft of the groove pressing machine, and the shaft and the concave wheel are coaxially arranged; a fixed-size wheel is formed at one end of the shaft close to the main machine head.

In one possible design, a power supply device for providing power to the processing mechanism is also included, and the cam and the back pressure wheel are jointly installed on the cam roller group assembly frame. The group assembly frame is connected to the power supply device through a sliding column, and the sliding column is suitable for reciprocating movement along the slideway, and the slideway is fixedly arranged on the main engine head.

The above technical solution of the present disclosure has the following advantages compared with the existing technology:

The disclosed pipe grooving machine sets a thicker back pressure wheel, relies on the back pressure wheel to drive the cam to rotate and provides pressure support to the cam, thereby improving the stress performance and service life of the cam, and at the same time improving the stability of the grooving process. performance, thereby improving the service life, processing accuracy and yield of the pipe groover.

Description of drawings

In order to make the content of the present disclosure easier to understand clearly, the present disclosure will be described in further detail below based on specific embodiments of the present disclosure and in conjunction with the accompanying drawings, wherein

Figure 1 is a schematic structural diagram of the pipe grooving machine described in Embodiment 1 of the present disclosure;

Figure 2 is a partial enlarged view of part M in Figure 1;

Figure 3 is a left view of Figure 2;

Figure 4 is a schematic structural diagram of the pipe grooving machine described in Embodiment 2 of the present disclosure;

Figure 5 is a partial enlarged view of part N in Figure 4;

FIG. 6 is a left side view of FIG. 5 .

The reference numbers in the figure are as follows: 1-cam, 1a-camshaft, 2-first back pressure wheel, 21-second back pressure wheel, 22-third back pressure wheel, 3-cam roller group assembly frame , 4-power cylinder, 5-sliding column, 6-slide, 7-concave wheel, 8-machine shaft, 9-length wheel, 10-pipe, 11-support platform, 12-public machine base, 13- Main head, 14-support wheel.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the embodiments of the present disclosure will be described in further detail below in conjunction with the accompanying drawings.

Embodiment 1

As shown in Figures 1-3, it is the first embodiment of the present disclosure. This embodiment discloses a pipe grooving machine for grooving pipes 10. The pipe grooving machine includes a support mechanism, a main head 13. Processing mechanism and power supply device. The pipe grooving machine in this embodiment is an anti-fatigue model that can withstand high strength and large pressure.

The support mechanism is used to support the pipe 10. The support mechanism includes a plurality of support wheels 14. The support wheels 14 are used to support and drive the pipe 10 to rotate around its axis. In this embodiment, the support mechanism also includes a support platform 11 and a common machine base frame 12. The support platform 11 is installed on the common machine base frame 12, and the support wheels 14 are installed on the support platform 11. superior. Further, the number of the supporting wheels 14 is at least two. Further, the number of the supporting wheels 14 is two.

The main head 13 is fixedly mounted on the supporting mechanism. In this embodiment, the main head 13 is fixedly mounted on the public machine base frame 12 .

The power supply device is used to provide power to the processing mechanism. In this embodiment, the power supply device is a power cylinder 4 .

The processing mechanism is used to groove the pipe 10. The processing mechanism includes a cam 1, a concave wheel 7 and at least one back pressure wheel, wherein the cam 1 is provided with a camshaft 1a. In this embodiment, the number of the back pressure wheels is one, and the back pressure wheel is the first back pressure wheel 2. The wheel cores of the first back pressure wheel 2, the cam 1, and the concave wheel 7 are located on the same plane. In this embodiment, the concave wheel 7 is the main power wheel and pulls the pipe to perform circular rotation.

The cam 1 is adapted to apply pressure to the outer wall surface of the pipe 10 during grooving, and the concave wheel 7 is adapted to apply pressure to the inner wall surface of the pipe 10 during grooving and provide rotation for the pipe. power, the contact points of the cam 1 and the pipe 10 and the contact points of the concave wheel 7 and the pipe 10 are located on the same radius line of the cross section of the pipe 10; the back pressure wheel is arranged on the The cam 1 is away from the side of the pipe 10, and the back pressure wheel is adapted to apply pressure support to the cam 1 when pressing grooves, and follow the rotation of the cam 1. The thickness of the back pressure wheel is not less than The thickness of the cam 1. In this embodiment, the surface of the first back pressure wheel 2 is formed with a first annular groove whose size matches the size of the cam 1, and the cam 1 is embedded in the first annular groove. .

In this embodiment, the back-pressure wheel is assembled on the pressing mechanism. The back-pressure wheel provides pressure support to the cam 1 when pressing the groove, and follows the rotation of the cam 1 .

In this embodiment, the cam 1 and the back pressure wheel are jointly installed on the cam roller group assembly frame 3. The cam roller group assembly frame 3 is connected to the power supply device through the sliding column 5, and The sliding column 5 is suitable for reciprocating movement along the slideway 6 , and the slideway 6 is fixedly arranged on the main head 13 . Further, the cam 1 and the back pressure wheel are both provided with bearings and fixing bolt assemblies.

In this embodiment, the concave wheel 7 is sleeved on the crankshaft 8, and the crankshaft 8 and the concave wheel 7 are coaxially arranged; one end of the crankshaft 8 close to the main head 13 is formed There are fixed-length wheels 9.

In this embodiment, the rotation speed and feed of the concave wheel 7, the cam 1, and the back pressure wheel are all controlled by an intelligent control system. Further, the intelligent control system includes a sensing unit, a processing unit and a control unit.

Embodiment 2

As shown in Figures 4-6, it is a second embodiment of the present disclosure.

Different from Embodiment 1, in this embodiment, the number of back-pressure wheels is three, and the three back-pressure wheels are respectively one second back-pressure wheel 21 and two third back-pressure wheels 22. Two The third back pressure wheel 22 jointly follows the rotation of the cam 1 and provides support force to the cam 1. The second back pressure wheel 21 is disposed on a side of the third back pressure wheel 22 away from the cam 1. On the other hand, the second back pressure wheel 21 supports the rotation of the two third back pressure wheels 22 and is adapted to provide supporting force to the two third back pressure wheels 22 when pressing grooves.

In this embodiment, the two third back pressure wheels 22 are symmetrical to the plane formed by the wheel core of the cam 1 and the wheel core of the concave wheel 7 . Further, the wheel cores of the second back pressure wheel 21, the cam 1, and the concave wheel 7 are located on the same plane.

In this embodiment, the surfaces of the two third back pressure wheels 22 are both formed with second annular grooves of a size matching the cam 1, and the cam 1 is embedded in the two second back pressure wheels 22. in the annular groove. Furthermore, the second back pressure wheel 21 is formed with an annular flange that matches the second annular groove, and the annular flange is embedded in the two second annular grooves. in the trough.

In other embodiments, the second back pressure wheel 21 can also be designed as a calender roller.

Obviously, the above-mentioned embodiments are only examples for clear explanation and are not intended to limit the implementation. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. An exhaustive list of all implementations is neither necessary nor possible. The obvious changes or changes derived therefrom are still within the protection scope of the present disclosure. Therefore, the scope of the present disclosure is determined by the appended claims.

Claims

A pipe grooving machine, used for grooving pipes (10), is characterized in that it includes:

A support mechanism used to support the pipe (10). The support mechanism includes a plurality of support wheels (14). The support wheels (14) are used to support and drive the pipe (10) to rotate around its axis;

The main head (13) is fixedly installed on the support mechanism;

A processing mechanism is used for grooving the pipe (10). The processing mechanism includes a cam (1) and a concave wheel (7). The cam (1) is suitable for grooving the pipe (10). ) applies pressure to the outer wall surface of the pipe, and the concave wheel (7) is suitable for applying pressure to the inner wall surface of the pipe (10) when pressing the groove, and provides rotational power for the pipe; the cam (1) and the The contact points of the pipe (10), the contact points of the concave wheel (7) and the pipe (10) are located on the same radius line of the cross section of the pipe (10).
The grooving machine according to claim 1, characterized in that the processing mechanism further includes at least one back pressure wheel, the back pressure wheel is arranged on the side of the cam (1) away from the pipe (10) , and the back pressure wheel is adapted to apply pressure support to the cam (1) when pressing the groove, and follow the rotation of the cam (1). The thickness of the back pressure wheel is not less than the thickness of the cam (1). thickness.
The groove pressing machine according to claim 2, characterized in that the number of the back pressure wheel is one, the back pressure wheel is a first back pressure wheel (2), and the first back pressure wheel (2), The wheel cores of the cam (1) and the concave wheel (7) are located on the same plane.
The grooving machine according to claim 3, characterized in that the surface of the first back pressure wheel (2) is formed with a first annular groove whose size matches the size of the cam (1), and the cam (1) Embedded in the first annular groove.
The groove pressing machine according to claim 2, characterized in that the number of the back pressure wheels is three, and the three back pressure wheels are respectively one second back pressure wheel (21) and two third back pressure wheels. wheel (22), the two third back pressure wheels (22) jointly follow the cam (1) to rotate and provide support force to the cam (1), the second back pressure wheel (21) is arranged on The third back pressure wheel (22) is on the side away from the cam (1). The second back pressure wheel (21) supports the two third back pressure wheels (22) to rotate and is suitable for pressing. groove to provide supporting force to the two third back pressure wheels (22).
The groove pressing machine according to claim 5, characterized in that the two third back pressure wheels (22) are symmetrical to the wheel core of the cam (1) and the wheel core of the concave wheel (7). connected plane.
The groove pressing machine according to claim 6, characterized in that the wheel cores of the second back pressure wheel (21), the cam (1) and the concave wheel (7) are located on the same plane.
The grooving machine according to claim 5, characterized in that the surfaces of the two third back pressure wheels (22) are both formed with second annular grooves whose size matches the cam (1), The cam (1) is embedded in the two second annular grooves.
The groove pressing machine according to claim 8, characterized in that an annular flange matching the second annular groove is formed on the second back pressure wheel (21), and the annular flange is formed on the second back pressure wheel (21). The flange is embedded in the two second annular grooves.
The grooving machine according to any one of claims 1 to 9, characterized in that the concave wheel (7) is sleeved on the machine shaft (8) of the grooving machine, and the machine shaft (8), the The concave wheel (7) is coaxially arranged; a sizing wheel (9) is formed on one end of the machine shaft (8) close to the main machine head (13).
The grooving machine according to any one of claims 2 to 9, characterized in that it also includes a power supply device for providing power to the processing mechanism, and the cam (1) and the back pressure wheel are jointly installed on On the cam roller group assembly frame (3), the cam roller group assembly frame (3) is connected to the power supply device through a sliding column (5), and the sliding column (5) is suitable for along the slide (5) 6) Reciprocating motion, the slideway (6) is fixedly arranged on the main machine head (13).