KR20220106427A - Pipe cutter capable of automatically traveling thereof - Google Patents

Abstract

Provided is a pipe cutter having an automatic driving function, comprising: a main body; a drive motor provided in the main body and generating a rotary force; a drive member integrally rotated with the drive motor; a power transmission member disposed to have the axial direction perpendicular to the axial direction of the drive member and receiving the rotary force of the drive member; a rotary member disposed coaxially with the power transmission member and integrally rotated; and a winding member coupled so that one part thereof is wound around the outer circumferential surface of the rotary member. Another part of the winding member is arranged to wrap one part of the outer circumferential surface of a pipe. An objective of the present invention is to provide the pipe cutter having the automatic driving function capable of minimizing a processing error generated during a pipe cutting process.

Description

Pipe cutting machine with automatic driving function

The present invention relates to a pipe cutter having an automatic running function for cutting a round tube, and more particularly, to a pipe cutter having an automatic running function that can cut a pipe or perform chamfering while the cut part revolves along the outer circumferential surface of the base material. it's about

In general, at a city gas piping construction site or an industrial plant piping construction site, the pipe is cut to the length as a pre-work for welding, and then the welding surface (chamfered surface) is cut at a certain angle on the edge of the pipe to make the welding groove ( By implementing the improvement work to make the root), the operator butt-welds the welded surfaces formed on the pipe to easily connect the cut pipes to each other integrally.

However, in the prior art, a relatively large pipe has a large amount of chamfering for processing the weld surface during improvement work, so it takes a lot of time to process with a general small chamfer, and it is difficult to measure the exact amount of chamfering, and the quality of the work is lowered. Problems arise.

Therefore, in the industrial field, a large-capacity chamfer for exclusively processing the welding surface for welding is desperately required, and the large-capacity chamfering machine is not only easy to control the amount of chamfering but also has the ability to freely adjust the angle of improvement. It can fulfill its role.

In particular, in the case of a beveling machine that is rotatably implemented based on the processing surface, if precise control of the flame spray speed and the rotation speed of the beveler on the processing surface of the torch is not made, excessive deterioration of the processing surface or complete cutting may occur. There is a problem that cannot be done. Accordingly, the development of a pipe cutting machine capable of precise control of the rotation speed of the chamfer is required.

The present invention has been devised to solve the above problems, and an object of the present invention is to provide a pipe cutter having an automatic driving function that can minimize processing errors generated during the pipe cutting process.

In addition, an object of the present invention is to provide a pipe cutter having an automatic driving function that can realize an optimal reduction ratio with a simple configuration.

A pipe cutter having an automatic driving function according to an embodiment of the present invention includes a main body, a driving motor provided in the main body to generate a rotational force, a driving member rotating integrally with the driving motor, and vertical to the axial direction of the driving member A power transmitting member disposed to have an axial direction and receiving the rotational force of the driving member, a rotating member disposed coaxially with the power transmitting member to rotate integrally, and a winding member coupled to be partially wound around an outer circumferential surface of the rotating member Including, the other portion of the winding member may be arranged to surround a portion of the outer peripheral surface of the pipe.

The driving member may be a worm gear, and the power transmission member may be a spur gear that is rotated by meshing with the worm gear.

The gear teeth of the spur gear may be inclined to correspond to the inclined angle at which the gear teeth of the worm gear are inclined.

The driving motor may be a BLDC motor capable of forward and reverse rotation.

It is provided in the main body and may include a control unit for controlling the rotation direction of the BLDC motor, and a remote control capable of transmitting and receiving wirelessly with the control unit.

A reduction ratio of the worm gear and the spur gear may be 1/50 to 1/30.

A torch is formed at one end of the main body, and oxygen and combustion gas are supplied through the torch to form a cutting flame.

A plurality of locking protrusions are formed along the circumferential surface of the outer circumferential surface of the rotating member, and the winding member has a chain shape in which a plurality of locking grooves are continuously provided. Locking grooves of the locking protrusions corresponding to each of the locking lock and release can be repeated.

It is formed at the lower end of the main body and may include a plurality of rolling members provided to be in rolling contact along the outer circumferential surface of the pipe.

According to the pipe cutter having an automatic driving function according to an embodiment of the present invention, processing errors generated during the pipe cutting process can be minimized.

In addition, since the rotational force of the driving member having a relatively large surface area is sufficiently transmitted to the power transmission member, it is possible to stably support the load of the body and to revolve around the rotational axis of the pipe.

In addition, since the driving member is made of a worm gear and the power transmission member is made of a spur gear, it is possible to implement an optimal reduction ratio with a simple configuration that can minimize self-load.

1 is a front view showing a pipe cutter having an automatic driving function according to an embodiment of the present invention.
FIG. 2 is a plan view of FIG. 1 .
3 is a side view of FIG. 1 ;
FIG. 4 is a perspective view showing the driving motor, the driving member, the power transmitting member, and the rotating member of FIG. 1 separated.
FIG. 5 is an exploded view illustrating an angle between the driving member and the power transmitting member of FIG. 4 .
6 is a state diagram of a pipe cutter having an automatic driving function according to an embodiment of the present invention.
7 is a side view of FIG. 5 ;

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and those of ordinary skill in the art to which the present invention pertains. It is provided to fully inform those skilled in the art of the scope of the present invention, and the present invention is only defined by the scope of the claims.

The terminology used herein is for the purpose of describing the embodiments and is not intended to limit the present invention. In this specification, the singular also includes the plural, unless specifically stated otherwise in the phrase. As used herein, “comprises” and/or “comprising” does not exclude the presence or addition of one or more other components in addition to the stated components. Like reference numerals refer to like elements throughout, and "and/or" includes each and every combination of one or more of the recited elements. Although "first", "second", etc. are used to describe various elements, these elements are not limited by these terms, of course. These terms are only used to distinguish one component from another. Therefore, it goes without saying that the first component mentioned below may be the second component within the spirit of the present invention.

Unless otherwise defined, all terms (including technical and scientific terms) used herein will have the meaning commonly understood by those of ordinary skill in the art to which this invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless clearly specifically defined.

Spatially relative terms "below", "beneath", "lower", "above", "upper", etc. It can be used to easily describe the correlation between a component and other components. A spatially relative term should be understood as a term that includes different directions of components during use or operation in addition to the directions shown in the drawings. For example, when a component shown in the drawing is turned over, a component described as “beneath” or “beneath” of another component may be placed “above” of the other component. can Accordingly, the exemplary term “below” may include both directions below and above. Components may also be oriented in other orientations, and thus spatially relative terms may be interpreted according to orientation.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a front view showing a pipe cutter having an automatic driving function according to an embodiment of the present invention, FIG. 2 is a plan view of FIG. 1 , and FIG. 3 is a side view of FIG. 1 .

As shown in FIGS. 1 to 3 , the pipe cutter having an automatic driving function according to an embodiment of the present invention includes a main body 100 , a driving motor 110 , a driving member 120 , a power transmitting member 130 , and rotation. It may include a member 140 and a winding member 150 .

The main body 100 is composed of a plurality of frames and panels so that components such as the driving motor 110 , the driving member 120 , the power transmission member 130 , the rotating member 140 and the winding member 150 can be assembled. can be done

FIG. 4 is a perspective view showing the driving motor, the driving member, the power transmitting member, and the rotating member of FIG. 1 separated, and FIG. 5 is a separated view showing the angle between the driving member and the power transmitting member of FIG. 4 .

Referring to FIGS. 4 and 5 together with FIGS. 1 to 3 , the driving motor 110 is mounted on one side of the main body 100 to generate rotational force.

The driving motor 110 may be a forward/reverse rotatable BLDC motor, for example 4000rpm, 24v, 52w, and a BLDC motor having a reduction ratio of 1/48 may be used. Here, the applied driving motor 110 is not limited thereto, since any motor having a reduction ratio of 1/48 or less or higher than a reduction ratio of 1/48 can be used depending on the diameter or cut thickness of the pipe.

The driving member 120 is disposed on the same axis as the driving motor 110 to rotate integrally.

In addition, the driving member 120 may be formed in a worm gear shape. In this case, as will be described later, the power transmission member 130 receiving the rotational force of the driving member 120 is perpendicular to the rotation axis of the driving member 120 . It can be engaged so as to receive rotational force in a state in which it is arranged.

The power transmission member 130 may be formed in the shape of a spur gear and may include a rotation shaft disposed perpendicular to the rotation shaft of the driving member 120 . At this time, as shown in FIG. 5 , the gear teeth of the power transmission member 130 may be inclined to correspond to the angle formed by the gear teeth of the driving member 120 .

That is, the angle b formed by the gear teeth of the power transmission member 130 may be formed to be substantially parallel to the angle a formed by the gear teeth of the driving member 120 .

In addition, when the power transmission member 130 is made of a spur gear and the driving member 120 is made of a worm gear, high torque transmission is possible compared to the case of a structure directly connected to the motor in the shape of a pair of spur gears. Rather, the backlash between the gear teeth is minimized at the same time for the smooth transmission of rotational force between the power transmission member 130 and the driving member 120 .

For this reason, as will be described later, the main body 100 revolves along the outer circumferential surface of the pipe 10 and during the cutting process, the center of gravity is switched at the uppermost and lowermost positions in the process of the backlash generated between the gear teeth. The occurrence of processing errors can be minimized.

The rotation member 140 may be disposed on the same axis as the power transmission member 130 and rotated integrally.

In addition, a plurality of locking protrusions 141 may be formed on the outer circumferential surface of the rotating member 140 along the circumferential surface. Each of the locking protrusions 141 is coupled to a locking groove (not shown) of the winding member 150, which will be described later, so that the body 100 is rotated by the rotation of the rotating member 140 at the circular center (C) of the pipe 10 . is induced to revolve around the .

The reduction ratio between the driving member 120 and the power transmission member 130 may be 1/50 to 1/30, and preferably 1/40. At this time, as described above, since the reduction ratio can be set so that the loss of transmission of the rotational force of the driving member 120 can be minimized while minimizing the backlash, other reduction ratios are also applicable.

The winding member 150 may be a chain having a plurality of locking grooves (not shown) corresponding to each of the locking protrusions 141 so as to be continuously hooked and fixed to each of the locking protrusions 141 of the rotating member 140 . have.

In the process of rotating the rotating member 140, a portion of the locking grooves of the winding member 150 are continuously caught in the corresponding locking grooves, and then the process of releasing them may be repeatedly performed.

Another portion of the winding member 150 may be fixed to surround the outer circumferential surface of the pipe 10 .

In other words, the driving member 120 is rotated by the rotational force of the driving motor 110 , and the driving member 120 and the power transmission member 130 meshed with the driving member 120 are rotated to rotate the rotating member 140 . By rotating, the locking protrusion 141 (the opposite side from the pipe 10) of a portion of the rotating member 140 is locked and fixed, so that the body 100 revolves around the central axis of the pipe 10 .

In addition, the locking groove of a portion of the winding member 150 that was in contact with the outer circumferential surface of the pipe 10 is fastened to the locking protrusion 141 of the rotating member 140 so that continuous revolution of the body 100 is possible. .

In addition, the lower end of the body 100 is provided with a rolling member 113 that is in rolling contact along the outer circumferential surface of the pipe 10 so as to be able to idling and rotate around a rotation axis (not shown), respectively, so that the body 100 can revolve smoothly. guide you as much as possible.

A torch 160 is formed at one end of the body 100 , and oxygen and combustion gas are supplied through the torch 160 to form a fireball.

To this end, a supply line 162 including an oxygen supply hose and a gas supply hose may be formed so that oxygen and combustion gas may be supplied through the torch 160 . That is, since the body 100 revolves around the rotational axis of the pipe 10, the torch 160 revolves around the rotational axis of the pipe 10 while cutting the outer circumferential surface of the pipe 10 to form a circular cross-section.

In addition, the main body 100 may include a control unit 111 for controlling the rotation direction of the driving motor 110 and a remote control unit 111a capable of wireless transmission and reception with the control unit 111 .

That is, by controlling the rotation direction of the driving motor 110 in the forward or reverse direction, the main body 100 can revolve in a clockwise or counterclockwise direction along the outer circumferential surface of the pipe 10 .

Hereinafter, an operation process of the pipe cutter having an automatic driving function according to an embodiment of the present invention will be described with reference to the accompanying drawings.

6 is a view showing the use of a pipe cutter having an automatic driving function according to an embodiment of the present invention, and FIG. 7 is a side view of FIG. 5 .

6 and 7 , the rolling member 113 of the body 100 is arranged to be in rolling contact with the outer circumferential surface of the pipe 10 . At this time, the injection direction of the torch 160 is disposed to face the cut portion of the pipe (10).

Thereafter, when power is applied to the driving motor 110 to rotate the driving motor 110 , the rotational force of the driving motor 110 is transmitted to the power transmission member 130 through the driving member 120 .

Main body 100 by the relative rotation between the locking protrusion 141 of the rotary member 140 and the locking groove of the winding member 150 in the process of rotating the rotating member 140 integrally rotated with the power transmission member 130 is rotated. The pipe 10 revolves around the rotation axis C of the pipe 10 .

The rotational force of the driving motor 110 is set according to the reduction ratio between the driving member 120 and the power transmission member 130, and the orbital speed along the rotational axis C of the pipe 10 of the body 100 is determined by this reduction ratio. is set, and the orbital speed of the main body 100 may be set to correspond to the injection pressure of the torch 160 .

In particular, after the body 100 reaches the top of the pipe 10 while forming an upward curve to reach the top of the pipe 10 in the process of the body 100 revolving along the outer circumferential surface of the pipe 10, Backlash may occur between the gear teeth of the driving member 120 and the power transmission member 130 because the center of gravity of the main body 100 is switched at the time of forming the downward curve, but the driving member 120 is rotated at an angle a. Backlash as described above can be minimized because the power transmission member 130 is formed of a worm gear inclined at an angle and a spur gear formed to be inclined at a predetermined angle b.

Similarly, after the main body 100 reaches the lowermost end while forming a downward curve along the outer circumferential surface of the pipe 10, the driving member 120 and Backlash between gear teeth of the power transmission member 130 may be minimized.

In addition, when the main body 100 revolves along the outer circumferential surface of the pipe 10, the thickness of the pipe 10 is a relatively thick standard, so if the cutting process is not performed smoothly in part, the remote control 111a is operated Thus, the control unit 111 controls the rotation direction of the driving motor 110 in the opposite direction to cut and process the uncut portion again, thereby improving the reliability of the processing result.

In other words, in order to cut a specific part with poor cutting condition again, stop the main body in operation, block the oxygen and combustion gas valves, place the main body in the cutting position, and open the oxygen and combustion gas valves to operate again. Without need, it is possible to operate the remote control and control the rotation direction of the driving motor through the control unit.

Therefore, according to the pipe cutter having an automatic driving function according to an embodiment of the present invention, a processing error generated during the pipe cutting process can be minimized.

In addition, since the rotational force of the driving member having a relatively large surface area is sufficiently transmitted to the power transmission member, it is possible to stably support the load of the body and to revolve around the rotational axis of the pipe.

In addition, since the driving member is made of a worm gear and the power transmission member is made of a spur gear, it is possible to implement an optimal reduction ratio with a simple configuration that can minimize self-load.

As described above, the pipe cutter having an automatic running function according to the present invention has been described with reference to the drawings, but the present invention is not limited by the above-described embodiments and drawings, and within the scope of the claims, the present invention belongs Various implementations are possible by those skilled in the art.

100: body
110: drive motor
111: control unit
111a: remote control
113: cloud absence
120: drive member
130: power transmission member
140: rotating member
150: winding member
160: torch

Claims (9)

main body;
a driving motor provided in the main body to generate a rotational force;
a driving member rotating integrally with the driving motor;
a power transmission member disposed to have an axial direction perpendicular to the axial direction of the driving member and receiving a rotational force of the driving member;
a rotating member disposed coaxially with the power transmission member and rotated integrally; and
and a winding member coupled to be wound in part on the outer circumferential surface of the rotating member,
The other portion of the winding member is arranged to surround a portion of the outer circumferential surface of the pipe, a pipe cutter having an automatic running function. According to claim 1,
The driving member is a worm gear, and the power transmission member is a spur gear meshed with the worm gear to rotate. 3. The method of claim 2,
The gear teeth of the spur gear are inclined to correspond to the inclined angle of the gear teeth of the worm gear, the pipe cutter having an automatic driving function. 4. The method of claim 3,
The driving motor is a BLDC motor capable of forward and reverse rotation, a pipe cutter having an automatic driving function. 5. The method of claim 4,
a control unit provided in the main body and configured to control a rotation direction of the BLDC motor; and
A pipe cutting machine having an automatic driving function, including a remote control capable of transmitting and receiving wirelessly with the control unit. 3. The method of claim 2,
The reduction ratio of the worm gear and the spur gear is 1/50 to 1/30, A pipe cutter having an automatic driving function. 6. The method of claim 5,
A torch is formed at one end of the main body, and oxygen and combustion gas are supplied through the torch to form a flame for cutting, a pipe cutter having an automatic running function. 8. The method of claim 7,
A plurality of locking protrusions are formed along the circumferential surface of the outer circumferential surface of the rotating member, and the winding member has a chain shape in which a plurality of locking grooves are continuously provided, each of the winding members in the process of rotating the rotating member. A pipe cutting machine with an automatic running function, in which the locking groove of the locking groove is repeatedly locked and released by the corresponding locking projections. 9. The method of claim 8,
A pipe cutter having an automatic driving function, which is formed on the lower side of the main body and includes a plurality of rolling members provided to make rolling contact along the outer circumferential surface of the pipe.

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