Multifunctional pipe coating removal device

Abstract

A multifunctional pipe coating removal device is disclosed. The multifunctional pipe coating removal device according to the present invention is a device for removing a coating from the inner or outer surface of a pipe, and is characterized in that it includes a tool unit for removing the coating, a roller unit including at least one surface roller that runs on the inner or outer surface of the pipe, a first plate to which the tool unit is connected, and a connecting unit including a second plate that is disposed on the other side of the first plate, connected to the first plate by one shaft, and to which the roller unit is connected.

Description

[Technical Field]

[0001] The present invention relates to a coating removal device, and more particularly to a multi-function pipe coating removal device for removing coatings coated or plated on the inner or outer surface of a pipe. [Background technology]

[0002] Piping used in the construction and building industries can be created by welding lengths of pipe together to create a piping line.

[0003] Generally, after manufacturing, pipes are coated on the inner and outer surfaces to prevent corrosion that occurs during storage and transportation, or when the piping line is used. However, if pipes are welded without removing the surface coating or oxides caused by corrosion, problems such as a decrease in the quality of the welded area and an unstable arc during welding can occur.

[0004] Referring to FIG. 1, the conventional pipe interior coating and foreign material removal device disclosed in Korean Patent Registration No. 10-0832836 (registration date: May 21, 2008) includes a machine fixing ring 10 for tightly fixing to the inner surface of the pipe 1, a forward / backward moving jack 20 that moves back and forth from the machine fixing ring, a motor 30 installed in the center of a fixed body connected to the forward / backward moving jack, a rotating shaft 40 axially connected to a reducer of the motor, a front cutting head 50 connected to the rotating shaft for breaking up the coating and foreign material adhering to the inner surface of the pipe into small pieces, a front scratching head 60 connected to the rotating shaft for scraping off the coating and foreign material adhering to the inner surface of the pipe, and an airbrush 70 connected to the rotating shaft for spraying air.

[0005] However, when removing a coating from a pipe using conventional equipment, there are problems such as the inability to adjust the amount of coating to be removed, and the need to use a different size of equipment when the pipe diameter changes. There are also disadvantages in that only one coating, either the inner coating or the outer coating, of the pipe can be removed. Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention has been devised to solve the above problems, and its object is to provide a multi-functional pipe coating removal device that can adjust the amount of coating to be removed, can remove coating regardless of pipe diameter, and can remove either the outer surface coating or the inner surface coating of a pipe depending on the purpose. [Means for solving the problem]

[0007] The multifunctional pipe coating removal device according to the present invention is a device for removing coatings from the inner or outer surface of a pipe, and may comprise a tool unit for removing the coating, a roller unit including at least one surface roller that runs on the inner or outer surface of the pipe, and a connecting unit including a first plate to which the tool unit is connected, and a second plate that is disposed on the other side of the first plate, connected to the first plate by a single shaft, and to which the roller unit is connected.

[0008] Furthermore, the tool unit may include a main body including a rotary motor with a rotary shaft exposed to the outside, and a processing unit whose outer circumferential surface contacts the surface of the pipe and whose one side is connected to the rotary shaft.

[0009] In this case, the tool part may further include a bearing disposed on the other side of the processing part, the inner diameter of which is connected to the rotary shaft.

[0010] More preferably, the outer diameter of the processed portion is larger than the outer diameter of the bearing and may be inclined with respect to the longitudinal direction of the rotation shaft.

[0011] Furthermore, the position of the tool portion may be adjustable in the longitudinal direction of the pipe.

[0012] Furthermore, the roller portion may include an elastic portion including a main body frame to which the surface roller and the connecting portion are connected, an elastic roller connected to the main body frame and running on the outer surface of the pipe, and a pressure portion that presses the elastic roller against the outer surface of the pipe.

[0013] At this time, the surface roller and the elastic roller may be rotated in one direction.

[0014] In addition, at least one of the surface roller or the elastic roller may have a rotation axis inclined at a certain angle based on the extension direction of the pipe so as to bring the main body frame into close contact with the end surface of the pipe during rotation.

[0015] Furthermore, the roller unit may further include a guide roller connected to the main frame, formed in at least one of the front and rear directions of the surface roller in the direction of travel, and running on the surface of the end of the pipe in the extension direction.

[0016] Furthermore, the first plate may include an insertion hole penetrating from one surface to the other surface into which the tool part is inserted, and an incised through-space capable of adjusting the diameter of the insertion hole and applying pressure, and the connecting part may further include a diameter adjusting bolt penetrating the through-space from the outer side of the first plate and fastened to the first plate.

[0017] Furthermore, the first plate may further include a first fastening hole penetrating from one side to the other side of the first plate, and the second plate may further include a second fastening hole communicating with the first fastening hole from an outer side of the second plate and penetrating toward the inner or outer surface of the pipe against which the tool part abuts, and the connecting part may include a first fastening member inserted into the first fastening hole and a second fastening member inserted into the second fastening hole and having an end abutting the other end of the first fastening member.

[0018] In this case, the second fastening member may include a first spring inserted into the second fastening hole and an adjustment bolt attached to the outer side of the second plate to adjust the elastic force of the first spring.

[0019] The first plate may further include a third fastening hole penetrating from one side to the other side of the first plate, the second plate may further include a bushing groove penetrating from one side to the other side of the second plate and communicating with the third fastening hole, the connecting portion may further include a third fastening member fastened to the third fastening hole, the bushing groove may have a diameter that increases toward one end in a certain region on one side, and the third fastening member may have a diameter that decreases toward the other end in a certain region on the other side, and may further include a second spring fixed to the first plate and wound around an outer peripheral surface of one side of the third fastening member.

[0020] Furthermore, the second plate may include a pipe diameter adjusting line formed by penetrating a certain angle region from one surface to the other surface, the connecting portion may further include a pipe diameter adjusting fastening member simultaneously fastened to the pipe diameter adjusting line and the roller portion, the second plate may further include a stroke limiting protrusion formed on one surface and protruding therefrom, and the first plate may further include a stroke limiting groove formed on the other surface and receiving one side of the stroke limiting protrusion, and the position of the stroke limiting groove may be changed relatively based on the stroke limiting protrusion.

[0021] Furthermore, the surface roller and the elastic roller may be disposed facing each other while being in contact with the outer surface of the pipe.

[0022] Furthermore, the surface roller can be attached at a different position on the roller portion. [Effects of the Invention]

[0023] The multifunctional pipe coating removal device according to the present invention as described above is capable of removing coatings regardless of the diameter of the pipe, has a simple structure, is easy to use and manufacture, and has the advantage of being able to remove both the outer and inner coatings of the pipe by adjusting the relative position or angle between the tool unit and the roller unit through the configuration of the connecting unit. [Brief explanation of the drawings]

[0024] [Figure 1] 1 is a cross-sectional view of a conventional pipe internal coating and foreign material removal device. [Figure 2] 1 is a perspective view of a multi-function pipe coating removal device according to the present invention; [Figure 3] 2 is an enlarged side view of a tool portion of the multifunctional pipe coating removal device according to the present invention. FIG. [Figure 4] 1 is an enlarged front view of a multi-function pipe coating removal device according to the present invention; [Figure 5A] 1 shows first and second embodiments of the angle change of the rotation axis of the surface roller depending on the rotation direction of the multifunctional pipe coating removal device according to the present invention (part 1). [Figure 5B] 10 shows first and second embodiments of the angle change of the rotation axis of the surface roller depending on the rotation direction of the multifunctional pipe coating removal device according to the present invention (part 2). [Figure 6A] 1 shows first and second embodiments of the angle change of the rotation axis of the elastic roller depending on the rotation direction of the multifunctional pipe coating removal device according to the present invention (part 1). [Figure 6B] 10 shows first and second embodiments of the angle change of the rotation axis of the elastic roller depending on the rotation direction of the multifunctional pipe coating removal device according to the present invention (part 2). [Figure 7] 1 is a rear view of a multi-function pipe coating removal device according to the present invention; [Figure 8] 1 is a rear perspective view of a first embodiment of a multi-function pipe coating removal device according to the present invention; [Figure 9] 3 is a front view of the first plate of the multifunctional pipe coating removal device according to the present invention, viewed from the other side. FIG. [Figure 10] 3 is a perspective view of a second plate of the multifunctional pipe coating removal device according to the present invention, viewed from one side; FIG. [Figure 11] 1 is a perspective view showing the inside of the rear connecting portion of the first embodiment of the multifunctional pipe coating removal device according to the present invention. FIG. [Figure 12] FIG. 2 is a cross-sectional view of a second embodiment of a multi-function pipe coating removal device according to the present invention. [Figure 13] 1 is a schematic diagram of a rotational implementation of a multi-function pipe coating removal device according to the present invention; [Figure 14] 1 is a front view of the multifunctional pipe coating removal device according to the present invention for processing the inner diameter of a pipe. [Figure 15] 1 is a front view of the multifunctional pipe coating removal device according to the present invention for processing the outer diameter of a pipe. [Figure 16] FIG. 4 is a cross-sectional view of a third embodiment of the multifunctional pipe coating removal device according to the present invention. [Figure 17] FIG. 10 is a front view of a fourth embodiment of a multifunctional pipe coating removal device according to the present invention. [Figure 18] FIG. 10 is a front view of a fifth embodiment of a multifunctional pipe coating removal device according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0025] The technical concept of the present invention will be described in more detail below with reference to the accompanying drawings. Prior to this, the terms and phrases used in the specification and claims should not be interpreted in a limited way to their ordinary or dictionary meanings, but should be interpreted in a meaning and concept that corresponds to the technical concept of the present invention, based on the principle that an inventor can appropriately define the concept of a term in order to best describe his or her own invention.

[0026] Therefore, it should be understood that the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiment of the present invention and do not represent the entire technical idea of ​​the present invention, and that there may be various modifications that can replace them at the time of this application.

[0027] The technical concept of the present invention will be described in more detail below with reference to the accompanying drawings. The accompanying drawings are merely examples shown to more specifically explain the technical concept of the present invention, and the technical concept of the present invention is not limited to the shapes of the accompanying drawings.

[0028] Referring to Figure 2, the multifunctional pipe coating removal device 1000 according to the present invention is a device for removing coatings from the inner or outer surface of a pipe P, and can be characterized by comprising a tool unit 100 for removing the coating, a roller unit 200 including at least one surface roller 210 that runs on the inner or outer surface of the pipe P, and a connecting unit 300 including a first plate 310 to which the tool unit 100 is connected, and a second plate 320 disposed on the other side of the first plate 310, connected to the first plate 310 by one axis, and to which the roller unit 200 is connected.

[0029] The roller unit 200 runs along the inner or outer surface of the pipe P, and the tool unit 100 is positioned in front of or behind the running direction of the roller unit 200 to cut the coating on the inner or outer surface of the pipe P in accordance with the roller unit 200.

[0030] The connecting portion 300 connects the roller portion 200 and the tool portion 100 so that the roller portion 200 is in close contact with the inner or outer surface of the pipe P, and the tool portion 100 is in close contact with the inner or outer surface of the pipe P as the roller portion 200 moves, thereby enabling the coating to be removed.

[0031] The multifunctional pipe coating removal device 1000 according to the present invention as described above can remove coatings regardless of the diameter of the pipe P, has a simple structure, is easy to use and manufacture, and has the advantage of being able to remove the outer and inner coatings of the pipe P by adjusting the relative position or angle of the tool unit 100 and the roller unit 200 through the configuration of the connecting unit 300.

[0032] Referring to FIG. 3, the tool unit 100 may include a main body unit 110 including a rotary motor with a rotary shaft 111 exposed to the outside, and a processing unit 120 whose outer surface contacts the surface of the pipe P and whose one side is connected to the rotary shaft 111.

[0033] The rotating shaft 111 is rotated by the rotary motor, and the processing part 120 rotates in accordance with the rotation of the rotating shaft 111, so that the outer surface of the processing part 120 comes into contact with the inner or outer surface of the pipe P to remove the coating.

[0034] In this case, the tool unit 100 may further include a bearing 130 disposed on the other side of the processing unit 120 and having an inner diameter connected to the rotary shaft 111 .

[0035] The bearing 130 is coupled to the tool unit 100 and rotates together with the rotary shaft 111, and its outer diameter runs on the inner or outer surface of the pipe P together with the surface roller 210. The bearing 130 can support the processing unit 120 on the inner or outer surface of the pipe P, and the other end of the processing unit 120 abuts on the inner or outer surface of the pipe P to maintain a constant processing amount of the pipe P.

[0036] More preferably, the outer diameter of the processing part 120 is larger than the outer diameter of the bearing 130, and may be inclined with respect to the longitudinal direction of the rotating shaft 111. Therefore, the maximum depth to which the surface of the pipe P is cut may be determined by the difference in outer diameter between the processing part 120 and the bearing 130, and the inclination of the outer diameter of the processing part 120 may cause the shape of the cut surface to be inclined rather than parallel.

[0037] Furthermore, the position of the tool unit 100 may be adjustable in the longitudinal direction of the pipe P. That is, the position of the tool unit 100 or the processing unit 120 itself may be adjustable in the longitudinal direction of the pipe P, and the processing width of the coating to be removed from the pipe P can be adjusted.

[0038] In addition, the tool part 100 is connected to the first plate 310 by inserting at least a portion of the body part 110 into the insertion hole 311. At this time, the position of the tool part 100 can be adjusted by moving the body part 110 along the longitudinal direction of the pipe P by tightening or loosening the diameter adjusting bolt 400.

[0039] Referring to FIG. 4, the roller unit 200 may include a main frame 220 to which the surface roller 210 and the connecting unit 300 are connected, an elastic roller 231 connected to the main frame 220 and running on the outer surface of the pipe P, and an elastic unit 230 including a pressure unit 232 that presses the elastic roller 231 against the outer surface of the pipe P.

[0040] One side of the main body frame 220 may be connected to the connecting part 300, and the other side may be connected to the pressure part 232. The elastic roller 231 is pressed by the pressure part 232 to press the outer surface or the inner surface of the pipe P, and may travel in a state of being in close contact with the outer surface or the inner surface of the pipe P.

[0041] When the surface roller 210 runs on the inner surface of the pipe P, the elastic roller 231, which is arranged to face the surface roller 210, runs in close contact with the outer surface of the pipe P, and can therefore actively run in response to deformation of the pipe P.

[0042] In this case, the elastic roller 231 may be made of a metal collar having a diameter larger than that of the surface roller 210 and configured to be elastically supported by the pressure unit 232 .

[0043] The surface rollers 210 may be two or more in number, and in this case, the elastic roller 231 having a diameter larger than that of the surface rollers 210 may be positioned between the two surface rollers 210 .

[0044] In addition, the front roller 210 and the elastic roller 231 can be rotated in one direction. That is, the front roller 210 and the elastic roller 231 are configured to include a device for fixing the rotation direction in one direction, thereby preventing reverse rotation during coating removal.

[0045] Referring to FIG. 5, the surface roller 210 may have a rotation axis inclined at a certain angle based on the extension direction of the pipe P so that the main body frame 220 is in close contact with the end surface of the pipe P during rotation.

[0046] That is, the surface roller 210 may have a rotation axis that is inclined at a certain angle with respect to the extension direction of the pipe P so that the main frame 220 can be brought into close contact with the pipe P by rotation.

[0047] Referring to FIG. 6, the elastic roller 231 may have a rotation axis inclined at a certain angle based on the extension direction of the pipe P so as to bring the main body frame 220 into close contact with the end surface of the pipe P during rotation.

[0048] That is, the elastic roller 231 may have an inclined rotation axis that is inclined at a certain angle with respect to the extension direction of the pipe P so that the main body frame 220 can be brought into close contact with the pipe P by rotation.

[0049] 4 to 6, the roller unit 200 may further include a guide roller 240 connected to the main frame 220, formed in at least one of the front and rear directions of the surface roller 210 in the advancing direction, and running on the surface of the end of the pipe P in the extension direction.

[0050] The guide roller 240 reduces the friction generated between the end surface of the pipe P and the main body frame 220 when the surface roller 210 or the elastic roller 231 runs, so that the main body frame 220 can run smoothly while being in close contact with the end of the pipe P.

[0051] 7, the second plate 320 may include a pipe diameter adjusting line 323 formed by penetrating a predetermined angle area from one side to the other side. Also, the connecting part 300 may further include a pipe diameter adjusting fastening member 440 fastened to the pipe diameter adjusting line 323 and the roller part 200 at the same time.

[0052] The pipe diameter adjusting line 323 is configured to adjust and fix the positions of the roller unit 200 and the tool unit 100, and more specifically, by adjusting the positions of the processing unit 120 and the surface roller 210 according to the diameter of the pipe P, the processing unit 120 and the surface roller 210 can be maintained in close contact with the surface of the pipe P regardless of the diameter of the pipe P.

[0053] 7 and 8, the first plate 310 and the second plate 320 have a certain thickness, one side of the first plate 310 is exposed to the outside, and the other side of the first plate 310 and one side of the second plate 320 overlap to form the connecting portion 300.

[0054] 8 to 11, the first plate 310 and the second plate 320 rotate relative to each other based on a plate connecting shaft 301 that connects the first plate 310 and the second plate 320 by passing through shaft connecting holes 316 and 325 formed in the first plate 310 and the second plate 320, respectively.

[0055] 8 and 9, the first plate 310 may include an insertion hole 311 penetrating from one side to the other and into which the tool unit 100 is inserted, and an incised through-space 312 capable of adjusting and pressurizing the diameter of the insertion hole 311. In addition, the connecting part 300 may further include a diameter adjusting bolt 400 passing through the through-space 312 from the outer side of the first plate 310 and fastened to the inside of the first plate 310.

[0056] The tool part 100 can be adjusted in the longitudinal direction of the pipe P through the through space 312, and the tool part 100 having various diameters can be mounted in the insertion hole 311. When the tool part 100 is inserted into the insertion hole 311, the diameter adjusting bolt 400 is fastened to the first plate 310, so that the position of the tool part 100 on the first plate 310 can be fixed without changing.

[0057] 9 to 11, the first plate 310 may further include a first fastening hole 313 penetrating from one side to the other side of the first plate 310, and the second plate 320 may include a second fastening hole 321 communicating with the first fastening hole 313 from the outer side of the second plate 320. In addition, the connecting part 300 may include a first fastening member 410 inserted into the first fastening hole 313 and a first spring 422 inserted into the second fastening hole 321 and having one end abutting against the other end of the first fastening member 410.

[0058] In this case, the second fastening member 420 may include a first spring 422 inserted into the second fastening hole 321 and an adjustment bolt 421 attached to the outer side of the second plate 320 to adjust the elastic force of the first spring 422. The first spring 422 is preferably a compression spring.

[0059] When the first fastening member 410 is fastened from one side to the other side of the first plate 310, the other end of the first fastening member 410 abuts against the end of the first spring 422. At this time, when the first spring 422 presses the first fastening member 410, the processing part 120 attached to the first plate 310 is elastically supported toward the inner or outer surface of the pipe P that it abuts, and is pressed against the inner or outer surface of the pipe P.

[0060] The amount of cutting of the coating is determined by the difference in outer diameter between the processing part 120 and the bearing 130 installed at the end of the processing part 120. At this time, the processing part 120 can maintain a constant cutting amount despite deformation (deviation from a perfect circle) of the pipe P or changes in thickness (outer diameter and inner diameter) of the pipe P due to the adjusted elastic force of the first spring 422 that presses the first fastening member 410.

[0061] If the support direction of the first spring 422 relative to the first fastening member 410 is changed from the inner diameter to the outer diameter or from the outer diameter to the inner diameter as needed, the present invention can be converted into an apparatus for machining the outer diameter or an apparatus for machining the inner diameter.

[0062] The adjustment bolt 421 is fastened to the second plate 320, and the elastic force of the first spring 422 can be adjusted according to the fastening depth of the second plate 320. As the fastening depth of the adjustment bolt 421 increases, the elastic force of the compressed first spring 422 increases, thereby increasing the adhesion force between the pipe P and the tool unit 100 (or the processing unit 120).

[0063] 12, the first plate 310 may further include a third fastening hole 314 penetrating from one side to the other side of the first plate 310. The second plate 320 may further include a bushing groove 322 penetrating from one side to the other side of the second plate 320 and communicating with the third fastening hole 314. The connecting part 300 may further include a third fastening member 430 fastened to the third fastening hole 314.

[0064] The third fastening member 430 is maintained in a state of being screwed into the third fastening hole 314, and may be partially inserted into the bushing groove 322 depending on the depth of screw fastening.

[0065] In this case, the diameter of the bushing groove 322 may be increased toward one end in a certain region on one side, and the diameter of the third fastening member 430 may be decreased toward the other end in a certain region on the other side. The third fastening member 430 may further include a second spring 431 fixed to the first plate 310 and wound around the outer periphery of one side of the third fastening member 430.

[0066] The second spring 431 is configured to elastically support the third fastening member 430 so that the third fastening member 430 does not loosen and change position due to factors such as vibration during operation.

[0067] 13 to 15, the displacement c generated by the engagement between the diameter adjusting fastening member 440 and the roller unit 200 and the diameter adjusting line 323 is for responding to changes in the diameter of the pipe P. In addition, the third fastening member 430 and the third fastening hole 314 can adjust changes in the position of the processing unit 120. In addition, the displacement d generated by the degree of engagement between the third fastening member 430 and the bushing groove 322 is for adjusting the cutting displacement of the tool unit 100.

[0068] The displacement c can be adjusted by fixing the surface roller 210 and the elastic roller 231 to one side of the pipe P and adjusting the pipe diameter adjusting line 323 according to the size (diameter) of the pipe P. Also, when the processing unit 120 is rotated and the third fastening member 430 is gradually inserted into or removed from the bushing groove 322, the processing unit 120 moves by a displacement d based on the connecting shaft 301. At this time, the first fastening member 410 presses the first spring 422, which acts to press the tool unit 120 against the inner or outer surface of the pipe P.

[0069] 14 and 15, the positions of the second fastening hole 321 and the stroke limiting groove 315 and the pressing direction of the first spring 422 may be formed to be different from each other. That is, when removing the inner diameter coating of the pipe P, the above-mentioned configuration may be arranged so that the processing unit 120 applies pressure to the inner diameter of the pipe P. Conversely, when removing the outer diameter coating of the pipe P, the above-mentioned configuration may be arranged so that the processing unit 120 applies pressure to the outer diameter of the pipe P.

[0070] Referring to FIG. 16, the second plate 320 further includes a stroke limiting protrusion 324 formed on one surface, and the first plate 310 further includes a stroke limiting groove 315 formed on the other surface and receiving one side of the stroke limiting protrusion 324, and the position of the stroke limiting groove 315 may be variable relative to the stroke limiting protrusion 324.

[0071] The stroke limiting groove 315 and the stroke limiting protrusion 324 are configured to maintain the insertion position within a certain area even when the third fastening member 430 is completely removed from the third fastening hole 314.

[0072] Referring to FIG. 17, the surface roller 210 and the elastic roller 231 may be disposed to face each other while contacting the outer surface of the pipe P, respectively.

[0073] That is, when the diameter of the pipe P is small, the coating can be more stably removed by rotating the surface roller 210 on the outer surface of the pipe P rather than on the inner surface of the pipe P. In this case, the surface roller 210 and the elastic roller 231 are disposed to press and run on the pipe P from opposite directions relative to the pipe P, so that the roller unit 200 can be more stably attached to the pipe P.

[0074] As shown in FIG. 17, the first plate 310 and the second plate 320 may be connected to a bracket separately formed on the main body frame 220 by the connecting shaft 301 so that the first plate 310 and the second plate 320 can rotate relative to each other according to the size of the pipe P.

[0075] 17 and 18, the position at which the front roller 210 is coupled on the roller unit 200 can be changed. That is, in order to remove the coating of the relatively smaller pipe P, the coupling position of the front roller 210 can be changed so that the pipe P can be mounted between the elastic roller 231 and the front roller 210. The front roller 210 can be coupled to a plurality of roller coupling holes 211 formed at regular intervals along the extension direction of the main frame 220, and the coupling position can be changed depending on the diameter of the pipe P.

[0076] Although not shown in the figures, the multifunctional pipe coating removal device 1000 of the present invention can remove the coating from the outer or inner surface of the pipe P by changing the position or angle of the tool unit 100 via the connecting unit 300 and positioning the processing unit 120 so that it contacts the outer or inner surface of the pipe P.

[0077] In addition, the shape of the processing part 120 itself can be manufactured to be inclined, or the processing part 120 can be arranged to be inclined at a certain angle to the surface of the pipe P rather than being horizontal, so that the surface of the pipe P can be inclined.

[0078] The present invention is not limited to the above-described embodiments, and the scope of application is diverse. It goes without saying that various modifications can be made without departing from the spirit of the present invention as claimed in the claims. [Industrial Applicability]

[0079] The multifunctional pipe coating removal device of the present invention is capable of removing coatings regardless of the diameter of the pipe, has a simple structure that is easy to use and manufacture, and allows the outer and inner coatings of the pipe to be easily removed by adjusting the relative position or angle of the tool part and the roller part through the configuration of the connecting part.By overcoming the limitations of existing technology, it is not only useful for related technology but also has sufficient potential for the commercialization or sale of the applied device, and is clearly and realistically feasible, making it an invention with industrial applicability. [Explanation of symbols]

[0080] 1000: Multifunctional pipe coating removal device 100: Tool section 110: Main body 111: Rotation axis 120: Processing department 130: Bearing 200: Roller section 210: Surface roller 211: Roller mounting hole 220: Main frame 230: Elastic part 231: Elastic roller 232: Pressure unit 240: Guide roller 300: Connection part 301:Connection shaft 310: First Plate 311: Insertion hole 312:Through space 313: First closing hole 314: 3rd closing hole 315: Stroke limit groove 316: Shaft connection hole 320: Second plate 321: 2nd closing hole 322: Bushing groove 323: Pipe diameter adjustment line 324: Stroke limiting protrusion 325: Shaft connection hole 400: Diameter adjustment bolt 410: First fastening member 420: Second fastening member 421: Adjustment bolt 422: First Spring 430: Third fastening member 431: Second Spring 440: Pipe diameter adjustment fastening member P: Pipe

Claims

1. A pipe coating removal device that removes coating from only one of the inner and outer surfaces of a pipe, a tool portion for removing the coating; a roller unit including at least one surface roller attached to the pipe and running along the circumferential direction of the inner or outer surface of the pipe; and a connecting portion including a first plate to which the tool portion is connected and a second plate disposed on the other side of the first plate, connected to the first plate by one shaft, and connected to the roller portion; Including, a direction of the axis that coincides with an extension direction of the pipe when the roller unit is attached to the pipe, and the first plate and the second plate rotate relatively around the axis; When removing a coating on the inner surface of the pipe, the roller unit is attached to the pipe by rotating the first plate relative to the second plate so that the tool unit comes into close contact with the inner surface of the pipe when the roller unit is attached to the pipe; When removing a coating from the outer surface of the pipe, the roller unit is attached to the pipe by rotating the first plate relative to the second plate so that the tool unit is in close contact with the outer surface of the pipe.

2. The tool portion includes: A main body including a rotary motor with a rotary shaft exposed to the outside; and a processing part whose outer circumferential surface contacts the surface of the pipe and whose one side is connected to the rotary shaft; 10. The pipe coating removal apparatus of claim 1, comprising:

3. The tool portion includes: a bearing disposed on the other side of the processed portion, the inner diameter of which is connected to the rotating shaft; 3. The pipe coating removal apparatus of claim 2, further comprising:

4. The outer diameter of the processed portion is 4. The pipe coating removal device according to claim 3, wherein the outer diameter of the rotary shaft is larger than the outer diameter of the bearing and is inclined at a predetermined angle relative to the longitudinal direction of the rotary shaft.

5. The tool portion includes:

2. The pipe coating removal device of claim 1, wherein the position is adjustable along the length of the pipe.

6. The roller portion is a main body frame to which the surface roller and the connecting portion are connected; and an elastic unit connected to the main frame, the elastic unit including an elastic roller that travels on the outer surface of the pipe, and a pressure unit that presses the elastic roller against the outer surface of the pipe; 10. The pipe coating removal apparatus of claim 1, comprising:

7. 7. The pipe coating removal device according to claim 6, wherein the surface roller and the elastic roller rotate in one direction.

8. At least one of the surface roller and the elastic roller is 7. The pipe coating removal device according to claim 6, wherein the rotation axis is inclined at a predetermined angle relative to the extension direction of the pipe so that the main body frame is brought into close contact with the end surface of the pipe during rotation.

9. The roller portion is a guide roller connected to the main frame, formed in at least one of the front and rear sides of the surface roller in the direction of travel, and running on the surface of the end of the pipe in the extension direction; 9. The pipe coating removal apparatus of claim 8, further comprising:

10. The first plate is An insertion hole through which the tool portion is inserted from one surface to the other surface; and a cut-through space that can be pressurized by adjusting the diameter of the insertion hole; The connecting portion is a diameter adjusting bolt that passes through the through-space from the outer side of the first plate and is fastened to the first plate; The pipe coating removal device of claim 1 further comprising:

11. The first plate is a first fastening hole penetrating from one surface of the first plate to the other surface; The second plate is A second fastening hole that communicates with the first fastening hole from the outer side of the second plate and penetrates toward the inner or outer surface of the pipe against which the tool portion abuts; The connecting portion is a first fastening member inserted into the first fastening hole; and a second fastening member inserted into the second fastening hole and having an end abutting against the other end of the first fastening member; 10. The pipe coating removal device of claim 1, comprising:

12. The second fastening member is a first spring inserted into the second fastening hole; and an adjustment bolt attached to an outer side of the second plate for adjusting the elastic force of the first spring; 12. The pipe coating removal device of claim 11, comprising:

13. The first plate is a third fastening hole penetrating from one surface of the first plate to the other surface; The second plate is a bushing groove penetrating from one surface of the second plate to the other surface thereof and communicating with the third fastening hole; The connecting portion is a third fastening member fastened to the third fastening hole; The bushing groove is The diameter of the one-side fixed area becomes wider as it approaches one end, The third fastening member is The diameter of the other fixed area becomes smaller as it approaches the other end, a second spring fixed to the first plate and wound around one outer circumferential surface of the third fastening member; The pipe coating removal device of claim 11 further comprising:

14. The second plate is a pipe diameter adjusting line formed by a predetermined angle region penetrating from one surface to the other; The connecting portion is a pipe diameter adjusting fastening member that is fastened to the pipe diameter adjusting line and the roller portion at the same time; The second plate is a stroke limiting protrusion formed on one surface; The first plate is a stroke limiting groove formed on the other surface and receiving one side of the stroke limiting protrusion; 2. The pipe coating removal device according to claim 1, wherein the stroke limiting groove is variable in position relative to the stroke limiting protrusion.

15. The pipe coating removal device according to claim 6, wherein the surface roller and the elastic roller are disposed facing each other while being in contact with the outer surface of the pipe.

16. The surface roller is 2. The pipe coating removal device of claim 1, wherein the position of the bond on the roller section is changed.

Images