KR102601174B1 - Roll groove processing apparatus for elbow pipe - Google Patents

Abstract

A roll groove processing device for an elbow pipe according to an embodiment of the present invention includes a groove forming part with a driving roller, a groove processing roller, and a roller movable part, and a pipe fixing part with a pipe holder, a holder damper, and a holder driving part, The pipe holder moves vertically downward by the holder driving part to fix the other opening and both sides of the elbow pipe with the driving roller inserted in one opening, and then the grooving roller moves horizontally by the roller moving part to open one side of the elbow pipe. With pressure applied to the adjacent outer surface, the driving roller contacts the inner surface of the elbow pipe and rotates the elbow pipe to form a groove. The present invention can achieve automation of the process of forming grooves in elbow pipes and improve productivity and safety through the above structure.

Description

Roll groove processing equipment for elbow pipe {ROLL GROOVE PROCESSING APPARATUS FOR ELBOW PIPE}

The present invention relates to a roll groove processing device, and more specifically, to a processing device for forming a groove in an elbow pipe for fastening a joint connecting an elbow-shaped pipe with another pipe.

The method of connecting different pipes to the required length uses a groove piping method that uses a joint to connect the pipes in addition to directly welding the area where the two pipes meet. Generally, when high pressure is applied to the connection part of the pipe or the pipe diameter is large, both pipes are connected by directly welding the mating part. However, the method of connecting two pipes through welding takes a long time to construct, and requires a skilled welding technician to maintain the welded area for a long period of time without defects such as leaks and cracks.

In addition, welding by heat is prone to corrosion, and is difficult to apply to the earthquake-resistant design required for high-rise buildings. In particular, due to the mandatory earthquake-resistant design of fire-fighting piping, the groove piping method, which is a connection method using joints, is widely used rather than the welding method. . The groove piping method, which is a representative method of connecting two different pipes using a joint, involves forming a groove in a pipe to connect two different pipes through a joint or to connect various devices. In this method, a groove is formed at the end of each pipe, and a joint is fastened to the groove formed on the two pipes to connect the two pipes.

At this time, the method of forming the groove in the pipe is a cutting method on the outside of the pipe and a roll groove method. However, the cutting method has the problem of weakening the strength of the pipe in the process of cutting part of the outer surface of the pipe to form the groove, so the roll groove method, which is a non-cutting method, is widely used at construction sites.

Republic of Korea Patent No. 10-1973474 relates to a method and device for forming a groove in a pipe element. While a driving roller rotates the pipe inside the pipe, a groove processing roller presses on the outside of the pipe to create a circumferential groove in the pipe. do. In this way, the roll groove method forms a groove along the circumference of the pipe by pressing a rotating pipe through a groove forming roller and an internal driving roller. At this time, since the groove is generally an area where a joint is fastened to connect different pipes, it is generally formed close to one end of the pipe. Therefore, during the roll groove process, one end of the pipe engages with the rollers inside and outside the pipe and rotates, so support the stand opposite the groove processing position of the pipe to prevent the rotation axis of the pipe from being twisted.

In the case of a general straight pipe, as described above, a stand can be placed opposite the groove processing position to prevent the rotation axis of the pipe from being twisted. However, unlike straight pipes, elbow-shaped pipes cannot be fixed using a separate stand. In particular, depending on the diameter and thickness of the pipe, a deviation occurs between the rotation axis of the roller that processes the groove and the center of the pipe, making it impossible to use a fixed stand. Likewise, when forming a groove in an elbow pipe, the stand cannot be used due to the above-mentioned problem, so the worker fixes the elbow pipe by hand to proceed with the work. However, this not only threatens the safety of the worker, but also secures the elbow pipe properly. can not do. In addition, the conventional elbow pipe processing device has the problem of low workability and productivity because the operator processes the groove by engaging the pipe with the device.

The present invention was created to solve the above problems and meet the conventional requirements. The problem that the present invention aims to solve is the problem of groove shape and position error caused by rotation axis deviation when forming a groove in an elbow pipe. The goal is to provide a roll groove processing device for elbow pipes that can solve the problem, speed up and automate the process of forming grooves in elbow pipes, and ensure the safety of workers.

The above and other objects and advantages of the present invention will become apparent from the following description of preferred embodiments.

The object includes a groove forming part with a driving roller, a grooving roller and a roller moving part, and a pipe fixing part with a pipe holder, a holder damper and a holder driving part, and the pipe holder is moved in a vertical downward direction by the holder driving part. Then, after fixing the other opening and both sides of the elbow pipe in which the driving roller is inserted into one opening, the groove processing roller is moved horizontally by the roller movable part to apply pressure to the outer surface adjacent to the one opening of the elbow pipe. This is achieved by a roll groove processing device for the elbow pipe, where the driving roller contacts the inner surface of the elbow pipe and rotates the elbow pipe to form a groove.

Preferably, the pipe holder rotates together while fixing the elbow pipe when the driving roller rotates the elbow pipe, and the holder damper is connected to the rotation axis of the driving roller when the elbow pipe and the pipe holder rotate together. This may be to offset the eccentricity caused by the difference in the rotation axis of the elbow pipe.

More preferably, the holder damper allows the pipe holder to slide in the left and right horizontal directions according to the movement of the elbow pipe caused by the eccentricity caused by the difference between the rotation axis of the driving roller and the rotation axis of the elbow pipe, This may be to offset the movement of the elbow pipe position.

Preferably, a central control unit is further configured to calculate the difference between the rotation axis of the elbow pipe and the rotation axis of the driving roller in consideration of the dimensions of the elbow pipe and control the position of the pipe holder so that it contacts the other opening and both sides of the elbow pipe. It may include

Preferably, the central control unit may calculate the distance between the groove processing roller and the driving roller by reflecting the depth of the groove formed in the elbow pipe, and move the groove processing roller horizontally.

Preferably, the central control unit may determine the fixing position of the pipe holder in consideration of eccentricity based on the position and size of the elbow pipe confirmed through the provided laser displacement sensor and the previously stored position of the driving roller.

Preferably, it further includes a pipe transfer unit having a first robot arm, a second robot arm, a first transfer belt, and a second transfer belt, and the first transfer belt is an elbow pipe without a groove located on the upper surface. It is transferred in the direction of the first robot arm, and the first robot arm picks up the elbow pipe on which the groove is not formed and positions it so that the driving roller is inserted into the opening on one side, and then the elbow pipe is moved by the driving roller and the groove processing roller. When the first groove is formed in the direction of one side of the opening, the second robot arm may pick up the elbow pipe in which the first groove is formed in the direction of the one side of the opening and place it on the second transfer belt.

Preferably, the second robot arm picks up the elbow pipe in which the first groove is formed in the direction of one opening located on the second transport belt and positions the driving roller to be inserted into the other opening in which the opening is not formed, and the driving When a second groove is formed in the direction of the other opening of the elbow pipe by the roller and the groove processing roller, the first robot arm may pick up the elbow pipe with grooves formed in both openings and place it on the first transport belt.

Preferably, when the second robot arm picks up the elbow pipe with the first groove formed in the direction of one opening and places it on the second transport belt, the other opening without the groove is directed toward the surface of the second transport belt. It could be a spin-up layup.

Preferably, the second robot arm rotates so that the other opening, rather than the one opening with the first groove, faces the driving roller in the process of picking up the elbow pipe with the first groove formed in the direction of the one opening located on the second transport belt. It may be laid up on the driving roller.

Preferably, it is provided with a pair of rollers, and is located on the same horizontal axis as the groove processing roller in opposite directions about the driving roller, and the pair of rollers provided further includes a groove guide supporting the driving roller from the side; , the groove guide may have a pair of rollers supporting the side of the driving roller to prevent lifting and movement of the driving roller by the groove processing roller.

Preferably, one end is fixed to the roller movable part and the other end is extended and fixed to the housing of the groove processing roller, and may further include a stopper that limits the maximum displacement of the groove processing roller.

According to the roll groove processing device for the elbow pipe according to the present invention, the problem caused by the rotation axis deviation between the roller and the elbow pipe is solved by fixing the elbow pipe regardless of the size and shape of the elbow pipe during the process of forming the roll groove on the elbow pipe. Thus, a uniform groove can be formed and high accuracy can be secured.

And according to the roll groove processing device for elbow pipes according to the present invention, productivity can be improved through automation of continuous supply of elbow pipes, and worker safety can be ensured.

However, the effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below.

Figure 1 is a perspective view of a roll groove processing device for an elbow pipe according to an embodiment of the present invention.
Figure 2 is a side view of a roll groove processing device for an elbow pipe according to an embodiment of the present invention.
Figure 3 is a plan view of a roll groove processing device for an elbow pipe according to an embodiment of the present invention.
FIG. 4 is an enlarged perspective view showing the groove forming portion and the pipe fixing portion of the roll groove processing device for the elbow pipe shown in FIG. 1.
Figure 5 is an enlarged side view of the groove forming part and the pipe fixing part of the roll groove processing device for the elbow pipe shown in Figure 1.
Figure 6 is a diagram explaining the operation of the groove forming part and the pipe fixing part of Figure 5.
FIG. 7 is an enlarged cross-sectional view of the elbow pipe of the roll groove processing device for the elbow pipe shown in FIG. 1.
FIG. 8 is an enlarged view showing the holder damper of the roll groove processing device for the elbow pipe shown in FIG. 1.
FIG. 9 is a diagram showing the elbow pipe transfer process of the elbow pipe roll groove processing device shown in FIG. 1.
Figure 10 is a perspective view of a roll groove processing device according to another embodiment of the present invention.
FIG. 11 is an enlarged side view of the grooving guide of the roll groove processing device shown in FIG. 10.

Hereinafter, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. The present invention may be implemented in many different forms and is not limited to the embodiments described herein.

In order to clearly explain the present invention in the drawings, parts not related to the description are omitted, and identical or similar components are given the same reference numerals throughout the specification. In addition, the thickness is enlarged in the drawing to clearly express various layers and regions. Additionally, when a component is referred to herein as being disposed “on” or “on” another component, the component may be placed directly on the other component or may be disposed between the components. They may exist. On the other hand, when an element is referred to as being disposed “directly on” or “directly on” another element, intervening elements may not be present.

Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by a person skilled in the art to which the present invention pertains. In case of conflict, the present specification, including definitions, will control. Although methods and materials similar or equivalent to those described herein can also be used in the practice or testing of the present invention, suitable methods and materials are described herein.

In this specification, the term "include" means that other components may be further included rather than excluding other components, unless specifically stated to the contrary.

As used herein, the term “a combination thereof” means a mixture or combination of one or more of the listed components.

As used herein, the term “and/or” is meant to include any and all combinations of one or more items associated with each other. As used herein, the term “or” means “and/or.” In this specification, the expression “at least one type” or “one or more” in front of components does not mean that the entire list of components can be supplemented and that individual components of the above description can be supplemented.

When a range of numerical values is stated herein, unless otherwise stated, the range is intended to include the endpoints and all integers and fractions within the range. The scope of the present invention is not intended to be limited to the specific values mentioned when defining the scope.

In this specification, each element is a concept that includes both singular and plural numbers.

Figure 1 is a perspective view of a roll groove processing device for an elbow pipe according to an embodiment of the present invention, Figure 2 is a side view of a roll groove processing device for an elbow pipe according to an embodiment of the present invention, and Figure 3 is a view of a roll groove processing device for an elbow pipe according to an embodiment of the present invention. It is a plan view of a roll groove processing device for an elbow pipe according to an embodiment, and FIG. 4 is an enlarged perspective view of the groove forming portion and the pipe fixing portion of the roll groove processing device for an elbow pipe shown in FIG. 1. FIG. 5 is an enlarged perspective view of the groove forming portion and the pipe fixing portion in FIG. 1. It is an enlarged side view showing the groove forming part and the pipe fixing part of the roll groove processing device for the elbow pipe, and FIG. 6 is a view explaining the operation of the groove forming part and the pipe fixing part of FIG. 5, and FIG. 7 is a diagram showing the operation of the groove forming part and the pipe fixing part in FIG. It is an enlarged cross-sectional view of the elbow pipe of the roll groove processing device for the elbow pipe shown, and FIG. 8 is an enlarged view showing the holder damper of the roll groove processing device for the elbow pipe shown in FIG. 1. For reference, for the purpose of drawing identification, the frame supporting the pipe fixing part 200 is omitted in FIGS. 2 to 6, excluding FIG. 1.

1 to 8, the roll groove processing device for elbow pipe according to an embodiment of the present invention includes a groove forming unit 100, a pipe fixing unit 200, a five conveying unit 300, and a central control unit 400. Includes.

The groove forming part 100 includes a driving roller 110, a groove processing roller 120, and a roller movable part 130, and the pipe fixing part 200 includes a pipe holder 210, a holder damper 220, and a holder driving part. It includes 230, and the pipe transfer unit 300 includes a robot arm 310 and a transfer belt 320. Additionally, a motor (not shown) that operates the driving roller 110 may be located inside the frame of the central control unit 400.

The driving roller 110 positions the elbow pipe 10 at the top and rotates the pipe 10 by contacting the inner surface of the elbow pipe 10. The elbow pipe 10 located on the driving roller 110 is positioned so that the driving roller 110 is inserted into one of both openings (one opening), so that the driving roller is in contact with the inner surface of the elbow pipe 10. It rotates by (110). When the elbow pipe 10 located on the driving roller 110 is rotated by the driving roller 110, the groove processing roller 120 is horizontally moved by the roller movable part 130 to surface the outer surface of the elbow pipe 10. Pressure is applied while in contact to form a groove on the outer surface of the elbow pipe 10. At this time, it is preferable that the driving roller 110 and the groove processing roller 120 form grooves by contacting corresponding positions facing each other on the inner and outer surfaces of the elbow pipe 10.

The roller movable part 130 is used to apply pressure by bringing the grooving roller 120 into close contact with the outer surface of the elbow pipe 10, and determines the strength and spacing of the force transmitted from the roller movable part 130 to the grooving roller 120. Accordingly, the depth of the groove formed on the surface of the elbow pipe 10 can be adjusted. And the roller movable part 130 can transmit force by hydraulic, pneumatic and other methods. The driving method of the roller movable part 130 is not particularly limited, and various force transmission methods used in the industry can be used.

When forming a groove on the surface of the elbow pipe 10 by the driving roller 110 and the groove processing roller 120, in order to form the groove at the correct position and in the correct shape, the elbow pipe 10 must be connected to the driving roller 110. It should not shake or move due to rotation or eccentricity. However, unlike straight pipes, the elbow pipe 10 does not have horizontal parts, making it difficult to fix with a general fixing structure, and the position to be fixed varies depending on the dimensions of the elbow pipe 10.

Moreover, when forming a groove on the surface of the elbow pipe 10 by the drive roller 110 and the groove processing roller 120, a deviation occurs between the rotation axis of the drive roller 110 and the rotation axis of the elbow pipe 10, resulting in eccentricity. This happens. In particular, the rotation axis of the elbow pipe 10 varies depending on the dimensions and thickness of the elbow pipe 10, and more specifically, the long radius of curvature, the short radius of curvature, center to end, outer diameter, inner diameter, and thickness of the elbow pipe 10. , the eccentricity between the driving roller 110 and the elbow pipe 10 varies depending on the size and shape of the elbow pipe 10. In this way, the position at which the elbow pipe 10 is fixed must vary depending on the varying eccentricity between the driving roller 110 and the elbow pipe 10, and at the same time, a structure that cancels out the shock and movement caused by the eccentricity is required. Accordingly, the elbow pipe roll groove processing device according to an embodiment of the present invention uses the pipe fixing part 200 to solve the fixing position and eccentricity problems caused by the shape and dimensions of the elbow pipe 10.

In order to solve the fixing position and eccentricity problems caused by the shape and dimensions of the elbow pipe 10 as described above, the present invention uses a pipe fixing part 200 to determine the shape and dimensions of the elbow pipe 10 and the corresponding Regardless of eccentricity, the elbow pipe 10 is fixed to form a groove 11 of the correct shape at the correct position.

The pipe fixing unit 200 includes a pipe holder 210, a holder damper 220, and a holder driving unit 230.

The pipe holder 210 moves vertically downward by the holder driving unit 230 and fixes the elbow pipe 10. At this time, the pipe holder 210 fixes the elbow pipe 10 by contacting the other opening and both sides of the elbow pipe 10 with the drive roller 110 inserted in one opening.

And when the drive roller 110 forms the groove 11 while rotating the elbow pipe 10, the pipe holder 210 rotates together with the elbow pipe 10 while fixing the elbow pipe 10.

When the driving roller 110 rotates the elbow pipe 10, the rotation axis of the driving roller 110 and the rotation axis of the elbow pipe 10 are different from each other, resulting in eccentricity. Therefore, the holder damper 220 moves the pipe holder 210 in the left and right horizontal directions in response to the movement of the elbow pipe 10 caused by the eccentricity caused by the difference between the rotation axis of the driving roller 110 and the rotation axis of the elbow pipe 10. By allowing it to slide, the positional movement of the elbow pipe 10 due to eccentricity is offset. As an example, as shown in FIG. 8, the holder damper includes a vertical spring 221 and a horizontal spring 222, so that the vertical spring 221 and the horizontal spring 222 move in the vertical and horizontal directions, respectively. The movement of the elbow pipe 10 can be offset by absorbing external force.

The pipe transfer unit 300 includes a robot arm 310 consisting of a first robot arm 311 and a second robot arm 312, and a transfer belt 320 consisting of a first transfer belt 321 and a second transfer belt 333. ) includes. This pipe transfer unit 300 supplies the elbow pipe 10 on which no groove is formed to the driving roller 110, and the elbow pipe 10 on which the groove is formed by the driving roller 110 and the groove processing roller 120 It performs the role of transporting.

The central control unit 400 controls the operation of the groove forming unit 100, the pipe fixing unit 200, the five conveying unit 300, and the entire roll groove processing device for the elbow pipe. However, the central control unit 400 shown in the drawing actually represents a frame in which the central control unit 400 is located. For convenience of explanation, reference numeral 400 is used to refer to the central control unit, and the actual central control unit is located inside or on the side of the frame. It can be located in .

The central control unit 400 uses a laser displacement sensor (not shown) to check the position and dimensions (outer diameter, inner diameter, thickness, center-to-end, etc.) of the elbow pipe 10 and takes into account the required width and depth of the groove. After determining the gap (distance) between the groove processing roller 120 and the driving roller 110, the groove processing roller 120 is horizontally moved in the direction of the driving roller 110 according to the determined gap, thereby forming the elbow pipe 10. Form a groove with the required width and depth while in close contact with the outer surface.

And the central control unit 400 determines the position and dimensions (outer diameter, inner diameter, thickness, center-to-end, etc.) of the elbow pipe 10 confirmed through a laser displacement sensor (not shown) and the previously stored position of the driving roller 110 ( Based on the rotation axis), the fixed position of the pipe holder 210 considering eccentricity is determined and controlled.

As an example, the central control unit 400 controls the outer diameter (OD), inner diameter (ID), thickness (T) and center-to-end (A) of the elbow pipe 10 shown in Figure 7 and the rotation axis of the driving roller 110 ( The fixed position of the pipe holder 210 is calculated through the numerical data of r), and the pipe holder 210 is controlled according to the calculated position. At this time, the position of the rotation axis (r) of the driving roller 110 is input to the central control unit 400 as basic information. And the outer diameter (OD), inner diameter (ID), thickness (T), and center-to-end (A) values of the elbow pipe (10) can be selected from the standard specifications of the elbow pipe that are input in advance to the central control unit (400). and the value measured using a laser displacement sensor can be used. In addition, as another example, the eccentricity of the elbow pipe 10 generated by positioning the elbow pipe 10 on the driving roller 110 and rotating it is measured to determine the position of the pipe holder 210 by driving a servo motor, etc. The position can be adjusted.

FIG. 9 is a diagram showing the elbow pipe transfer process of the elbow pipe roll groove processing device shown in FIG. 1, and is a diagram for explaining the continuous processing process of the elbow pipe roll groove processing device according to an embodiment of the present invention. .

1 to 9, the roll groove processing device for the elbow pipe according to an embodiment of the present invention is installed on one opening side of the elbow pipe 10 through the groove forming part 100 and the pipe fixing part 200. In addition to forming grooves, grooves can be continuously formed on two or more elbow pipes 10 through the pipe transport unit 300, and grooves can be continuously formed on both opening sides.

For this purpose, the pipe transfer unit 300 includes a first transfer belt 321 capable of mounting and transporting a plurality of elbow pipes, and a first robot arm 311 that picks up and transfers the elbow pipe on the first transfer belt 321. It consists of a second transfer belt 322 capable of mounting and transporting a plurality of elbow pipes, and a second robot arm 312 picking up and transferring the elbow pipes on the second transfer belt 322. And the first transport belt 321 and the second transport belt 322 may further be provided with a holder 323 to prevent the elbow pipe from falling in the outward direction.

First, the first transport belt 321 transports the elbow pipe without a groove in the direction of the first robot arm 311. At this time, the transfer method of the first transfer belt 321 can be a general conveyor belt method, and transfer rollers or other various methods can be used without limitation.

When an elbow pipe without a groove is approached through the first transport belt 321, the first robot arm 311 picks up the elbow pipe without a groove from the first transport belt 321 and picks up the elbow pipe on one side of the elbow pipe. The picked elbow pipe without a groove is laid up on the driving roller 110 so that the driving roller 110 is inserted into the opening.

Thereafter, the elbow pipe on which the groove is not formed is fixed through the pipe holder 210, and a first groove is formed in the direction of the opening on one side through the driving roller 110 and the groove processing roller 120.

When the first groove is formed in the direction of one opening of the elbow pipe, the pipe holder 210 is spaced apart from the elbow pipe in which the first groove is formed, and then the second robot arm 312 is moved to the elbow pipe in which the first groove is formed in the direction of one opening. is picked up and laid up on the second transfer belt 322.

If the groove is formed only on one side of the elbow pipe, the elbow pipe with the first groove formed in the direction of the opening on one side is manufactured using the above-described method. In addition, when forming grooves in both opening directions of the elbow pipe, the following secondary groove processing process is additionally performed.

When a first groove is formed in the direction of the opening on one side of the elbow pipe through the primary groove processing process as described above, a second groove is formed in the direction of the opening on the other side of the elbow pipe through the secondary groove processing process as follows.

The second transport belt 322 transports the elbow pipe with the first groove formed in the direction of one opening toward the second robot arm 312. And when the elbow pipe on which the first groove is formed approaches through the second transfer belt 322, the second robot arm 312 picks up the elbow pipe on which the first groove is formed in the direction of one opening from the second transfer belt 322. The elbow pipe with the first groove is laid up on the driving roller 110 so that the driving roller 110 is inserted into the opening on the other side of the elbow pipe where the groove is not formed. At this time, the method of laying up the elbow pipe on which the first groove is formed on the driving roller 110 so that the driving roller 110 is inserted into the opening on the other side where the groove is not formed is that the second robot arm 312 forms the first groove. In the process of picking up the formed elbow pipe and laying it up on the second transport belt 322, the lay-up method is performed by rotating the other side opening, not the one side opening where the first groove is formed, to face the surface of the second transport belt 322. It can be used, and in the process of laying up the elbow pipe in which the first groove is formed from the second transport belt 322 to the driving roller 110, the other opening, not the one side opening where the first groove is formed, faces the driving roller 110. It can be rotated to do so. In addition, a separate robot arm is provided on the second transport belt 322 to rotate the second transport belt 322 so that the other opening, rather than the one side opening where the first groove is formed, faces the surface of the second transport belt 322. You can use the laying method.

When the driving roller 110 is inserted into the opening on the other side of the elbow pipe where the groove is not formed through the above-described process, it is fixed through the pipe holder 210 and inserted into the other opening through the driving roller 110 and the groove processing roller 120. A second groove is formed in this direction. And the elbow pipe, in which first grooves and second grooves are formed in both opening directions on one side and the other, is laid up on the first transport belt 321 through the first robot arm 311, and grooves are formed in both opening directions. Elbow pipes can be processed.

The roll groove processing device for elbow pipe according to an embodiment of the present invention can perform an automated process of forming grooves on both opening sides of the elbow pipe by continuously performing the above-described primary and secondary groove processing processes. This makes it possible to mass produce elbow pipes with grooves formed.

Figure 10 is a perspective view of a roll groove processing device according to another embodiment of the present invention, and Figure 11 is an enlarged side view of the grooving guide of the roll groove processing device shown in Figure 10.

Referring to FIGS. 1 to 11, the roll groove processing device according to another embodiment of the present invention is additionally provided with a groove guide 500, and the remaining configuration except for the grooving guide 500 is as shown in FIGS. 1 to 9. Since the configuration is the same, redundant explanations will be omitted. Additionally, in Figure 11, the external housing and frame are omitted for easy identification.

The roll groove processing device according to another embodiment of the present invention processes grooves in a state in which the elbow pipe 10 is fixed by the pipe fixing part 200 and the elbow pipe 10 is rotated through the driving roller 110. The roller 120 applies pressure to the outer surface of the elbow pipe 10 to form a groove. At this time, in order to form a groove on the outer surface of the elbow pipe 10 made of a metal material, the groove processing roller 120 applies pressure to the surface of the elbow pipe 10 with strong pressure, and at this time, the inside of the elbow pipe 10 A large pressure is also applied to the engaged drive rollers 110. In this way, when great pressure is applied to the driving roller 110, the driving roller 110 is lifted or moves, resulting in problems such as uneven wear. Accordingly, in the roll groove processing apparatus according to another embodiment of the present invention, lifting and movement of the driving roller 110 is prevented through the groove guide 500 in contact with the driving roller 110.

The groove guide 500 includes a pair of rollers, and the pair of rollers supports the driving roller 110 from the side. When the elbow pipe 10 is located on the driving roller 110 and the elbow pipe 10 is fixed by the pipe fixing part 200, the groove guide 500 moves the driving roller 110 through a pair of rollers provided. It is possible to prevent movement and deformation of the driving roller 110 by the groove processing roller 120 by supporting it from the side. At this time, as shown in FIGS. 10 and 11, the groove guide 500 is located on the same horizontal axis as the groove processing roller 120 and in the opposite direction from the driving roller 110, so that the groove processing roller 120 It is desirable to offset the pressure.

Additionally, the roll groove processing device according to another embodiment of the present invention may be additionally provided with a stopper 600. The stopper 600 has one end fixed to the housing of the roller movable part 130 and the other end extended and fixed to the housing of the grooving roller 120, so as to maintain the maximum displacement of the grooving roller 120 by the roller movable part 130. limit. Even if the roller movable part 130 is limited through a preset distance and force, additional pressure may be applied to the groove processing roller 120 due to residual pressure in the case of hydraulic or pneumatic type. Therefore, in the present invention, more precise groove forming is possible by limiting the maximum displacement of the groove processing roller 120 through the stopper 600.

Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements made by those skilled in the art using the basic concept of the present invention defined in the following claims are also possible. falls within the scope of rights.

10: Elbow pipe 11: Groove (groove)
100: groove forming part 110: driving roller
120: Grooving roller 130: Roller moving part
200: pipe fixture 210: pipe holder
220: Holder damper 221: Vertical spring
222: horizontal spring
230: Holder driving unit
300: Pipe transfer unit 310: Robot arm
311: first robot arm 312: second robot arm
320: transfer belt 321: first transfer belt
322: Second transfer belt 323: Holder
400: Central control unit
500: Grooving guide 600: Stopper

Claims (12)

It includes a groove forming part with a driving roller, a groove processing roller, and a roller moving part, and a pipe fixing part with a pipe holder, a holder damper, and a holder driving part,
After the pipe holder is moved vertically downward by the holder driving unit to fix the other opening and both sides of the elbow pipe in which the driving roller is inserted into one opening, the groove processing roller is moved horizontally by the roller movable unit to align the elbow pipe. With pressure applied to the outer surface adjacent to one opening of the pipe, the driving roller contacts the inner surface of the elbow pipe to rotate the elbow pipe to form a groove,
The pipe holder rotates together while fixing the elbow pipe when the driving roller rotates the elbow pipe, and the holder damper is connected to the rotation axis of the driving roller and the elbow pipe when the elbow pipe and the pipe holder rotate together. offsets the eccentricity caused by the difference in the rotation axis,
The holder damper allows the pipe holder to slide in the left and right horizontal directions according to the movement of the elbow pipe caused by the eccentricity caused by the difference between the rotation axis of the driving roller and the rotation axis of the elbow pipe, thereby adjusting the position of the elbow pipe due to the eccentricity. A roll groove processing device for elbow pipe that offsets movement. delete delete According to paragraph 1,
a central control unit that calculates the difference between the rotation axis of the elbow pipe and the rotation axis of the driving roller in consideration of the dimensions of the elbow pipe, and controls the position of the pipe holder so that it contacts the other opening and both sides of the elbow pipe;
Roll groove processing device for elbow pipe, further comprising: According to paragraph 4,
The central control unit calculates the distance between the groove processing roller and the drive roller by reflecting the depth of the groove formed in the elbow pipe, and horizontally moves the groove processing roller. According to paragraph 1,
A roll groove processing device for an elbow pipe, wherein the central control unit determines the fixing position of the pipe holder considering eccentricity based on the position and dimensions of the elbow pipe confirmed through the provided laser displacement sensor and the previously stored position of the driving roller. According to paragraph 1,
It further includes a pipe transfer unit having a first robot arm, a second robot arm, a first transfer belt, and a second transfer belt,
The first transport belt transports the elbow pipe without a groove located on the upper surface in the direction of the first robot arm, and the first robot arm picks up the elbow pipe without a groove and inserts a drive roller into the opening on one side. After positioning, when a first groove is formed in the direction of one opening of the elbow pipe by the driving roller and the groove processing roller, the second robot arm picks up the elbow pipe in which the first groove is formed in the direction of the opening on one side and A roll groove processing device for elbow pipes positioned with a transfer belt. In clause 7,
The second robot arm picks up an elbow pipe with a first groove formed in the direction of one opening located on the second transport belt and positions the driving roller to be inserted into the other opening without an opening, and the driving roller and the groove When a second groove is formed in the direction of the other opening of the elbow pipe by the processing roller, the first robot arm picks up the elbow pipe with grooves formed in both openings and places it on the first transfer belt. A roll groove processing device for an elbow pipe. In clause 7,
When the second robot arm picks up the elbow pipe with the first groove formed in the direction of one opening and places it on the second transport belt, the second robot arm rotates the other side opening without the groove to face the surface of the second transport belt for layup. A roll groove processing device for elbow pipe. According to clause 8,
In the process of picking up the elbow pipe in which the first groove is formed in the direction of one opening located on the second transport belt, the second robot arm rotates so that the other opening, not the one opening in which the first groove is formed, faces the driving roller, thereby driving the second robot arm. A roll groove processing device for elbow pipe that lays up on rollers. According to paragraph 1,
A groove guide having a pair of rollers, located on the same horizontal axis as the groove processing roller in opposite directions about the driving roller, and having the pair of rollers supporting the driving roller from the side;
It further includes,
The groove guide is a roll groove processing device for an elbow pipe in which a pair of rollers supports the side of the driving roller, preventing lifting and movement of the driving roller by the groove processing roller. According to paragraph 1,
A stopper with one end fixed to the housing of the roller movable part and the other end extended and fixed to the housing of the grooving roller to limit the maximum displacement of the grooving roller;
Roll groove processing device for elbow pipe, further comprising:

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