Pipe cutting device

Abstract

A pipe cutting device according to one aspect of the present invention may comprise a base portion fixed to a floor surface, a fixing portion located on the upper part of the base portion to which a pipe is fixed, a cutting portion located on the upper part of the base portion to cut the pipe, and a control portion connected to the fixing portion and the cutting portion to control the fixing portion and the cutting portion.

Description

Technology Field

[0001] The present invention relates to a pipe cutting device, and more specifically, to a pipe cutting device capable of improving the quality of the pipe being cut. Background Technology

[0003] A typical band saw cutting device includes a vise for securing the material to be cut and a band saw blade that is driven by rotation.

[0004] With this structure, when cutting thin pipe or tube materials, if the clamping force of the vise holding the material is excessive, the material itself may be compressed and deformed, and conversely, if the clamping force is weak, the material may move during cutting, resulting in an uneven cut surface.

[0005] In addition, the vise is installed at a certain distance from the cutting line to secure a passage for the saw blade to pass through. As a result, the area around the point where the actual cutting takes place becomes a 'cantilever' state with no physical support, and there is a problem in that the cross-section of the material sags downward or gets crushed due to the downward pressure of the saw blade. Prior art literature

[0007] Republic of Korea Registered Patent Publication No. 10-1882405 (July 26, 2018) The problem to be solved

[0008] The present invention has been devised to solve the above-mentioned problems, and the objective of the present invention is to provide a pipe cutting device capable of minimizing damage such as degeneration or deformation during cutting.

[0009] In addition, the invention provides a pipe cutting device capable of cutting various types of pipes according to various sizes, diameters, materials, etc. means of solving the problem

[0011] A pipe cutting device according to one embodiment of the present invention for achieving the above-mentioned purpose may comprise a base portion fixed to a floor surface, a fixing portion located on the upper part of the base portion to which a pipe is fixed, a cutting portion located on the upper part of the base portion to cut the pipe, and a control portion connected to the fixing portion and the cutting portion to control the fixing portion and the cutting portion.

[0012] The above-mentioned fixing part may be provided with a base plate on which the pipe is placed and a fixing device located on both sides of the pipe to fix the pipe placed on the base plate by applying pressure, and the above-mentioned cutting part may be provided with a band saw blade, a driving device coupled with the band saw blade to rotate and drive the band saw blade up and down, a guide arm connected to the driving device and moved left and right to guide the band saw blade according to the diameter of the pipe, and a guide plate provided to be located at the top of the pipe to guide the cutting part of the pipe.

[0013] Before cutting, an auxiliary device is further provided that is mounted inside the pipe and supports the area near the cutting section. The auxiliary device is provided in the shape of a disc with a diameter equal to or smaller than the inner diameter of the pipe and is provided with a support block located inside the pipe when cutting; an insertion rod that is provided long in one direction and has the support block attached to one end so that the support block is pushed into the pipe by a worker before cutting; a scale provided along the length of the insertion rod so that the worker can visually check the distance the support block is inserted into the pipe; a length adjustment block attached to the insertion rod so that the length of insertion of the insertion rod is adjusted; a support provided at the bottom of the length adjustment block so that the length adjustment block is supported from the floor surface; and a handle provided at the other end of the insertion rod so that the worker can easily push the insertion rod into the pipe.

[0014] The above support block comprises a first block provided inside the main body of the pipe based on the cutting section, and a second block provided inside the pipe that is cut off corresponding to the first block based on the cutting section; the first block is provided with an insertion groove into which one end of the insertion rod is inserted, and a first mounting groove provided in the shape of an elongated hole with a width narrower than the insertion groove and communicating with the insertion groove; the second block is provided with a through hole located on the same line as the insertion groove through which one end of the insertion rod passes, and a second mounting groove located on the same line as the first mounting groove, provided in the shape of an elongated hole with a width narrower than the through hole and communicating with the through hole; the insertion rod is provided with a body that is long in one direction and has a handle at one end, a fastening bar provided at the other end of the body which is positioned in the insertion groove after one end passes through the through hole, and a fastening bar provided on the fastening bar which is provided with a diameter smaller than the insertion groove and larger than the first mounting groove, and after being inserted into the insertion groove A first mounting ring that engages with the first mounting groove, and a second mounting ring provided on the fastening bar, having a diameter smaller than the through hole and larger than the second mounting groove, which engages with the second mounting groove after being inserted into the through hole, and the length adjustment block may have a fastening hole into which the insertion rod is fastened, and a friction reduction pad provided in the fastening hole to reduce friction with the insertion rod.

[0015] A variable block is further provided to be coupled to the outer surface of the first block and the second block to allow the diameter of the support block to be varied, and the first block and the second block are provided with a coupling groove in which a plurality of coupling protrusions are fastened at regular intervals along the inner edge of the variable block, and the variable block may be provided with a main body in the shape of a circular ring and a fastening groove formed at regular intervals along the outer edge of the main body and in which the coupling protrusions of another variable block are fastened to be coupled to the outer surface. Effects of the invention

[0017] According to the pipe cutting device of the present invention, damage such as deformation or alteration can be minimized during cutting.

[0018] In addition, various types of pipes can be cut according to different sizes, diameters, materials, etc. Brief explanation of the drawing

[0020] FIGS. 1 to 3 are drawings showing a pipe cutting device according to an embodiment of the present invention. FIGS. 4 to 7 are drawings showing auxiliary devices provided in a pipe cutting device according to an embodiment of the present invention. FIG. 8 is a drawing showing an example of a modified support block illustrated in FIGS. 4 to 7. Specific details for implementing the invention

[0021] Hereinafter, a pipe cutting device according to one embodiment of the present invention will be described in detail with reference to the attached drawings.

[0023] FIGS. 1 to 3 are drawings showing a pipe cutting device according to an embodiment of the present invention.

[0024] Referring to FIGS. 1 to 3, a pipe cutting device (10) according to one embodiment of the present invention may comprise a base part (100) fixed to a floor surface, a fixing part (200) located on the upper part of the base part (100) to which a pipe (20) is fixed, a cutting part (300) located on the upper part of the base part (100) to cut the pipe (20), and a control part (400) connected to the fixing part (200) and the cutting part (300) to control the fixing part (200) and the cutting part (300).

[0025] And the fixing part (200) may be provided with a base plate (210) on which the pipe (20) is placed, and a fixing device (220) located on both sides of the pipe (20) to fix the pipe (20) placed on the base plate (210) by applying pressure.

[0026] The base plate (210) and the fixing device (220) are located on the rear of the pipe cutting device (10) and restrain the pipe (20) by applying force to both sides while supporting it, thereby preventing the pipe (20) from moving due to vibration or the like during cutting.

[0027] After cutting, the rear side of the pipe cutting device (10) has a part fixed to the main body of the pipe (20), i.e., the fixed part (200), and the front side of the pipe cutting device (10) has a part cut by the cutting part (300), and the part cut by the cutting part (300) can be transported to a specific location through a separate transport device (not shown).

[0028] Meanwhile, the cutting section (300) may be equipped with a band saw blade (310), a driving device (320) that is coupled with the band saw blade (310) to rotate and drive the band saw blade (310) up and down, a guide arm (330) that is connected to the driving device (320) and moves left and right to guide the band saw blade (310) according to the diameter of the pipe (20), and a guide plate (340) that is positioned at the top of the pipe (20) to guide the cutting section of the pipe (20).

[0029] Before cutting, the band saw blade (310) is positioned at the top of the cutting area and descends while rotating by the driving device (320) during cutting, and the guide plate (340) descends together with the descending band saw blade (310) to guide the descent of the band saw blade (310).

[0030] The guide arm (330) moves left and right to match the diameter of the pipe (20) so that the band saw blade (310) comes into close contact with the cutting area, thereby preventing a gap from forming between the band saw blade (310) and the cutting area, so that the cutting surface can be formed evenly.

[0031] The control unit (400) allows the operator to easily set and control the degree of pressure of the fixing device (220), the raising and lowering of the band saw blade (310) and guide plate (340), and the movement of the guide arm (330).

[0032] Next, an auxiliary device (500) provided in a pipe cutting device (10) according to one embodiment of the present invention will be described. In the following description, only parts that differ from the above-described embodiment will be described in detail, and detailed descriptions of identical or extremely similar parts will be omitted.

[0034] FIGS. 4 to 7 are drawings showing auxiliary devices provided in a pipe cutting device according to one embodiment of the present invention.

[0035] Referring to FIGS. 1 to 7, a pipe cutting device (10) according to one embodiment of the present invention may further include an auxiliary device (500) that is mounted inside the pipe (20) before cutting and supports the area near the cutting part.

[0036] The auxiliary device (500) supports the area near the cutting section to prevent damage such as crushing, deformation, or alteration caused by the band saw blade (310), thereby ensuring that the cutting surface is cut smoothly, which can have the effect of improving the quality of the pipe (20) being cut.

[0037] To this end, the auxiliary device (500) is provided with a disc shape having a diameter equal to or smaller than the inner diameter of the pipe (20) and is positioned inside the pipe (20) when cut, a support block (510), an insertion rod (520) which is provided long in one direction and has the support block (510) attached to one end so that the support block (510) is pushed into the inside of the pipe (20) by a worker before cutting, a scale (530) provided along the length direction of the insertion rod (520) so that the worker can visually check the distance the support block (510) is inserted into the pipe (20), a length adjustment block (540) which is attached to the insertion rod (520) so that the length of insertion of the insertion rod (520) is adjusted, a support member (550) provided at the bottom of the length adjustment block (540) so that the length adjustment block (540) is supported from the bottom surface, and is provided at the other end of the insertion rod (520) A handle (560) can be provided to allow the worker to easily push the insertion rod (520) into the inside of the pipe (20).

[0038] The support block (510) is provided with a first block (511) that is provided inside the main body of the pipe (20) based on the cutting portion, and a second block (512) that is provided inside the pipe (20) that is cut off corresponding to the first block (511) based on the cutting portion. The first block (511) is provided with an insertion groove (513) into which one end of an insertion rod (520) is inserted, and a first mounting groove (514) that is provided in the shape of an elongated hole and has a width narrower than the insertion groove (513) and communicates with the insertion groove (513). The second block (512) is provided with a through hole (515) that is located on the same line as the insertion groove (513) and through which one end of the insertion rod (520) passes, and a through hole (515) that is located on the same line as the first mounting groove (514) and is provided in the shape of an elongated hole and has a width narrower than the through hole (515) and communicates with the through hole (515). A second mounting groove (516) may be provided.

[0039] The insertion rod (520) may be provided with a body (521) that is long in one direction and has a handle (560) at one end, a fastening bar (522) provided at the other end of the body (521) and having one end pass through the through hole (515) and then be positioned in the insertion groove (513), a first mounting ring (523) provided on the fastening bar (522) and having a diameter smaller than the insertion groove (513) and larger than the first mounting groove (514) and inserted into the insertion groove (513) and then caught in the first mounting groove (514), and a second mounting ring (524) provided on the fastening bar (522) and having a diameter smaller than the through hole (515) and larger than the second mounting groove (516) and inserted into the through hole (515) and then caught in the second mounting groove (516).

[0040] Here, the distance between the first mounting ring (523) and the second mounting ring (524) is set considering the width of the band saw blade (310), and although not shown in the drawing, the distance between the first mounting ring (523) and the second mounting ring (524) can be easily adjusted by making the first mounting ring (523) and the second mounting ring (524) detachable from the fastening bar (522), thereby allowing the distance between the first block (511) and the second block (512) to be adjusted.

[0041] The length adjustment block (540) may be provided with a fastening hole (541) into which an insertion rod (520) is fastened, and a friction reduction pad (542) provided in the fastening hole (541) to reduce friction with the insertion rod (520).

[0042] The auxiliary device (500) is positioned so as to face the pipe (20) from the front of the pipe cutting device (10) while the pipe (20) is fixed by the fixing part (200), and can be operated by a worker after measuring the distance from one end of the pipe (20) protruding from the front of the pipe cutting device (10) to the cutting part.

[0043] The process for supporting the cut area through the auxiliary device (500) is as follows.

[0044] First, the support block (510) is provided in a state where it is fastened to the fastening bar (522) of the insertion rod (520), and the scale (530) located at one end of the fastening bar (522) is aligned with one end of the pipe (20).

[0045] While checking the scale (530), the body (521) is pushed into the inside of the pipe (20) at a distance equal to the distance between the end of the pipe (20) and the cut section measured in advance.

[0046] After it is confirmed that the support block (510) has been inserted to the same position as the cut portion, the body (521) is rotated through the handle (560) to release the connection between the support block (510) and the fastening bar (522).

[0047] At this time, the fastening bar (522) is moved from the first mounting groove (514) toward the insertion groove (513) so that the first mounting ring (523) is positioned in the insertion groove (513), and at the same time, it is moved from the second mounting groove (516) toward the through hole (515) so that the second mounting ring (524) is positioned in the through hole (515).

[0048] After the connection between the support block (510) and the connecting bar (522) is released, the body (521) is pulled to separate the support block (510) and the connecting bar (522), so that the support block (510) remains inside the pipe (20) to support the area near the cutting section, and the body (521) and the connecting bar (522) move out of the pipe (20) so as not to interfere with the cutting operation.

[0049] In this way, the auxiliary device (500) supports the area near the cutting section through a support block (510) inserted into the inside of the pipe (20), thereby preventing damage such as crushing, deformation, or alteration caused by the band saw blade (310) and ensuring that the cutting surface is cut smoothly, thereby having the effect of improving the quality of the pipe (20) being cut.

[0050] Meanwhile, the handle (560) allows the worker to easily move and rotate the body (521), and the friction reduction pad (542) can reduce friction with the body (521) that occurs while moving and rotating in the direction of the pipe (20) from the fastening hole (541), thereby enabling the body (521) to move and rotate easily.

[0051] Next, a modified example of the support block (510) mentioned above will be described. In the following description, only the parts that differ from the above-described embodiment will be described in detail, and detailed descriptions of parts that are identical or extremely similar will be omitted.

[0053] FIG. 8 is a drawing showing an example of a modified support block illustrated in FIG. 4 to FIG. 7.

[0054] Referring to FIGS. 1 to 8, a pipe cutting device (10) according to one embodiment of the present invention further comprises an auxiliary device (500) that is mounted inside the pipe (20) and supports the area near the cutting part before cutting, and the auxiliary device (500) may be provided in the shape of a disc with a diameter equal to or smaller than the inner diameter of the pipe (20) and may be provided with a support block (510) located inside the pipe (20) when cutting.

[0055] In addition, the support block (510) may be provided with a variable block (600) that is coupled to the outer surface of the first block (511) and the second block (512) to allow the diameter of the support block (510) to be varied.

[0056] The first block (511) and the second block (512) are provided with a coupling groove (517) in which a plurality of coupling protrusions (620) are fastened at regular intervals along the inner edge of the variable block (600), and the variable block (600) may be provided with a main body (610) in the shape of a circular ring and a fastening groove (630) formed at regular intervals along the outer edge of the main body (610) in which a coupling protrusion (620) of another variable block (600) is fastened to the outer surface.

[0057] The main body (610) of the variable block (600) is provided with various diameters, and the connecting protrusions (620) and fastening grooves (630) can be provided alternately along the rim.

[0058] The variable block (600) combined with the first block (511) and the second block (512) has the effect of varying the diameter of the first block (511) and the second block (512), so that the auxiliary device (500) can be easily applied to pipes (20) of various diameters.

[0059] Accordingly, even if the diameter of the pipe (20) varies, the area near the cutting part is supported through the auxiliary device (500) to prevent damage such as crushing, deformation, or alteration caused by the band saw blade (310), thereby ensuring that the cutting surface is cut smoothly, which can have the effect of improving the quality of the pipe (20) being cut.

[0061] Although a pipe cutting device according to one embodiment of the present invention has been described above, the concept of the present invention is not limited to the embodiments presented in this specification. Furthermore, those skilled in the art who understand the concept of the present invention may easily propose other embodiments by adding, changing, deleting, or adding components within the scope of the same concept, and such embodiments shall also be considered to fall within the scope of the concept of the present invention. Explanation of the symbols

[0063] 10: Pipe cutting device 20: Pipe 100: Base part 200: Fixed part 210: Baseplate 220: Fixing device 300: Cutting section 310: Band saw blade 320: Actuator 330: Guide arm 340: Guide plate 400: Control unit 500: Auxiliary device 510: Support block 511: Block 1 512: Block 2 513: Insertion groove 514: First mounting groove 515: Through hole 516: Second mounting groove 517: Connecting groove 520: Insertion rod 521: Body 522: Fastening bar 523: 1st Mount Ring 524: 2nd Mount Ring 530: Scale 540: Length adjustment block 541: Fastening hole 542: Friction reduction pad 550: Support 560: Handle 600: Variable block 610: Main body 620: Connecting projection 630: Fastening groove

Claims

Claim 1 It comprises a base portion fixed to a floor surface, a fixing portion located on the upper part of the base portion to which a pipe is fixed, a cutting portion located on the upper part of the base portion to cut the pipe, and a control portion linked to the fixing portion and the cutting portion to control the fixing portion and the cutting portion; the fixing portion comprises a base plate on which the pipe is placed and a fixing device located on both sides of the pipe to fix the pipe placed on the base plate through pressure; the cutting portion comprises a band saw blade, a driving device coupled with the band saw blade to rotate and drive the band saw blade up and down, a guide arm connected to the driving device and moved left and right to guide the band saw blade according to the diameter of the pipe, and a guide plate provided to be located at the top of the pipe to guide the cutting portion of the pipe; and further comprises an auxiliary device mounted inside the pipe to support the vicinity of the cutting portion before cutting, wherein the auxiliary device is provided in the shape of a disc with a diameter equal to or smaller than the inner diameter of the pipe, and when cutting, inside the pipe A pipe cutting device comprising: a positioned support block; an insertion rod that is long in one direction and has the support block attached to one end so that the support block is pushed into the interior of the pipe by a worker before cutting; a scale provided along the length of the insertion rod so that the worker can visually check the distance the support block is inserted into the pipe; a length adjustment block attached to the insertion rod so that the length of insertion of the insertion rod is adjusted; a support provided at the bottom of the length adjustment block so that the length adjustment block is supported from the floor surface; and a handle provided at the other end of the insertion rod so that the worker can easily push the insertion rod into the interior of the pipe. Claim 2 delete Claim 3 delete Claim 4 In claim 1, the support block comprises a first block provided inside the pipe that serves as the base with respect to the cutting portion, and a second block provided inside the pipe that is cut off corresponding to the first block with respect to the cutting portion; the first block is provided with an insertion groove into which one end of the insertion rod is inserted, and a first mounting groove provided in the shape of an elongated hole with a width narrower than the insertion groove and communicating with the insertion groove; the second block is provided with a through hole located on the same line as the insertion groove through which one end of the insertion rod passes, and a second mounting groove located on the same line as the first mounting groove, provided in the shape of an elongated hole with a width narrower than the through hole and communicating with the through hole; the insertion rod is provided with a body that is long in one direction and has a handle at one end, a fastening bar provided at the other end of the body which is located in the insertion groove after one end passes through the through hole, and a fastening bar provided on the fastening bar with a diameter smaller than the insertion groove and larger than the first mounting groove A pipe cutting device comprising: a first mounting ring provided for insertion into the insertion groove and engaging with the first mounting groove; a second mounting ring provided on the fastening bar, having a diameter smaller than the through hole and larger than the second mounting groove, which engages with the second mounting groove after being inserted into the through hole; and a length adjustment block provided with a fastening hole to which the insertion rod is fastened, and a friction reduction pad provided in the fastening hole to reduce friction with the insertion rod. Claim 5 A pipe cutting device according to claim 4, further comprising a variable block coupled to the outer surface of the first block and the second block to allow the diameter of the support block to be varied, wherein the first block and the second block are provided with a coupling groove in which a plurality of coupling protrusions are fastened at regular intervals along the inner edge of the variable block, and the variable block is provided with a main body in the shape of a circular ring and a fastening groove formed at regular intervals along the outer edge of the main body and coupled to the outer surface of another variable block in which the coupling protrusions are fastened.

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