Pipe cutting tool

Abstract

The utility model relates to a pipe cutting tool which comprises a handle, the handle is provided with an installation portion used for being matched with cutting knives of different cutting specifications, the cutting knives are detachably installed on the installation portion and comprise a shell, the shell is provided with a containing groove for containing a pipe, and blades used for cutting the pipe are installed on the peripheral wall of the containing groove. The cutting diameter can be changed by matching the cutting knives with different cutting specifications on the mounting part of the handle, and when pipes with different diameters need to be cut, only the corresponding cutting knives need to be mounted on the mounting part, so that the operation is convenient, and the cutting efficiency is improved. The problem that in the prior art, the radial positioning position of the pipe is adjusted through a roller, so that the pipe is extruded is solved, and the cutting precision and the pipe quality are guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cutting tools, in particular to a pipe cutting tool. BACKGROUND

[0002] In order to adapt to different use occasions, there are various pipe materials with different radial sizes.

[0003] When the pipe is installed and used, the length of the pipe needs to be cut due to the complexity of use occasions. At present, the pipe is cut by a cutter. However, the cutter mostly positions the required cutting diameter by adjusting radial positioning balls. However, the cutting precision of this structure is poor, and the cutting surface is prone to defects such as pipe indentation and deformation caused by improper positioning, and the adjustment process is time-consuming. CONTENT OF THE UTILITY MODEL

[0004] Therefore, it is necessary to provide a pipe cutting tool capable of cutting pipes with different diameters.

[0005] The present application provides a pipe cutting tool, which comprises a handle, the handle is provided with a mounting portion for adapting to different cutting specifications of a cutter, the cutter is detachably mounted on the mounting portion, the cutter comprises a shell, the shell is provided with a receiving groove for receiving a pipe, and a blade for cutting the pipe is mounted on the peripheral wall of the receiving groove.

[0006] In one embodiment, the cutter is rotationally constrained around its own axis on the mounting portion.

[0007] In one embodiment, the cutter is arranged to rotate relative to the handle in a first direction of clockwise or counterclockwise.

[0008] In one embodiment, the mounting portion is a mounting groove for inserting the cutter, the mounting groove comprises a first groove wall, a wall surface of the shell corresponding to the first groove wall is defined as a first wall surface, and a transmission structure for enabling the cutter to rotate in the first direction is arranged between the first groove wall and the first wall surface.

[0009] In one embodiment, the transmission structure is a ratchet structure, the ratchet structure comprises a first tooth arranged on the first groove wall and a second tooth arranged on the first wall surface, one of the first tooth and the second tooth is an arc-shaped ratchet tooth formed by connecting a plurality of tooth portions arranged in sequence along the rotation direction of the cutter, and the first tooth and the second tooth are engaged when the cutter is in a state of being constrained in the mounting groove.

[0010] In one of the embodiments, the first slot wall has two, and the two first slot walls are oppositely spaced along the axial direction of the cutter, and at least one of the first slot walls is provided with the first tooth.

[0011] In one of the embodiments, the first end of the handle is provided with two oppositely spaced clamping plates, and the inner walls of the two clamping plates facing each other are the first slot walls, and the two clamping plates and the first end of the handle together enclose the mounting slot, and the clamping plate is provided with a clearance groove coaxially arranged with the accommodating groove and avoiding the pipe.

[0012] In one of the embodiments, at least one of the first slot walls is provided with the first tooth spaced along the radial direction of the pipe.

[0013] In one of the embodiments, the first tooth is an arc-shaped ratchet tooth, and the second tooth is a single tooth including only one tooth part; or, the first tooth is a single tooth including only one tooth part, and the second tooth is an arc-shaped ratchet tooth.

[0014] In one of the embodiments, the first tooth is an arc-shaped ratchet tooth, and the first wall surface is provided with at least two second teeth spaced along the length direction of each arc-shaped ratchet tooth.

[0015] In one of the embodiments, the first tooth is an arc-shaped ratchet tooth, and a sliding groove is formed between adjacent two arc-shaped ratchet teeth, and the first wall surface is provided with a sliding part slidingly matched with the sliding groove, and the sliding groove and the sliding part are slidingly matched when the cutter is in the state of being constrained in the mounting slot.

[0016] In one of the embodiments, the sliding part is a protruding strip matched with the sliding groove and extending along the length direction of the sliding groove.

[0017] In one of the embodiments, the first slot wall and the first wall surface are matched with a guide structure guiding the rotation of the cutter, and the guide structure includes a first guide part provided on the first slot wall and a second guide part provided on the first wall surface, and the first guide part and / or the second guide part extend along the rotation direction of the cutter, and the first guide part and the second guide part are guidedly matched when the cutter is in the state of being constrained in the mounting slot.

[0018] In one of the embodiments, the first slot wall has two, and the two first slot walls are oppositely spaced along the axial direction of the cutter, and the two first slot walls are both provided with the first guide part, and the housing is provided with the second guide part at the positions corresponding to the first guide parts.

[0019] In one of the embodiments, one of the first guide part and the second guide part is a sliding part, and the other of the first guide part and the second guide part is a sliding groove, which extends along the rotation direction of the cutter.

[0020] In one of the embodiments, the second guide part is arranged at the outer edge of the first wall surface, or the second guide part is arranged between the outer edge of the first wall surface and the accommodating groove, so that the second guide parts of the cutters of different cutting specifications are adapted to the same first guide part.

[0021] In one of the embodiments, the handle is provided with a locking mechanism for locking or unlocking the two clamping plates, and the first tooth is engaged with the second tooth when the two clamping plates are in the locked state.

[0022] In one of the embodiments, the handle comprises two holding parts which are sequentially connected along the axial direction of the cutter, and each of the holding parts is provided with a clamping plate at the first end thereof, and the locking mechanism is arranged on the two holding parts to lock or unlock the two holding parts.

[0023] In one of the embodiments, the two holding parts are defined as a first holding part and a second holding part, the first holding part is formed with an assembly groove on the side away from the second holding part, and the locking mechanism comprises a mounting seat fixedly connected with the second holding part, the mounting seat is provided with an extension leg extending into the assembly groove, an elastic member is constrained in the assembly groove, the elastic member is formed with an avoiding hole through which the extension leg passes, and the part of the extension leg passing through the avoiding hole is defined as a first part, and a rotating arm is rotatably connected with the first part through a mounting shaft extending along the radial direction of the cutter, and the first end of the rotating arm has an abutting portion extending towards the elastic member, the abutting portion abuts against the elastic member when the two holding parts are in the locked state, so that the two holding parts are in the abutting state, and the abutting portion is separated from the elastic member when the two holding parts are in the unlocked state.

[0024] In one of the embodiments, the second ends of the two holding parts are rotatably connected through a connecting shaft, and the connecting shaft extends along the radial direction of the cutter.

[0025] Compared with the prior art, the pipe cutting tool provided in this application can change the cutting diameter by adapting different cutting blades to the mounting part of the handle. When it is necessary to cut pipes of different diameters, it is only necessary to install the corresponding blade on the mounting part. The operation is convenient and overcomes the problems of pipe squeezing caused by relying on rollers to adjust the radial positioning position of the pipe in the prior art. It is beneficial to ensure cutting accuracy and pipe quality. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a perspective view of a pipe cutting tool according to an embodiment of this application;

[0028] Figure 2 for Figure 1 A schematic diagram of the structure without the cutting blade;

[0029] Figure 3 This is a schematic diagram of the structure of a cutter for cutting a 1-inch pipe according to one embodiment of this application;

[0030] Figure 4 This is a schematic diagram of the structure of a cutter for cutting 3 / 4-inch pipes according to one embodiment of this application;

[0031] Figure 5 This is a schematic diagram of the structure of a cutter for cutting 1 / 2-inch pipes according to one embodiment of this application;

[0032] Figure 6 for Figure 4 Another structural diagram;

[0033] Figure 7 for Figure 1 A sectional view;

[0034] Figure 8 for Figure 7 A magnified view of a section at point I;

[0035] Figure 9 for Figure 1 A schematic diagram of the structure of the first gripping part;

[0036] Figure 10 for Figure 1 A schematic diagram of the structure of the second gripping part.

[0037] Label: 1, handle; 11, first grip part; 111, assembly groove; 12, second grip part; 13, first end part; 14, connecting shaft; 2, clamping plate; 20, mounting groove; 21, first groove wall; 22, avoiding groove; 3, cutting knife; 31, shell; 310, containing groove; 311, first wall surface; 32, blade; 33, roller; 4, transmission structure; 41, first tooth; 42, second tooth; 5, opening; 6, guiding structure; 61, convex strip; 62, sliding groove; 7, locking mechanism; 71, mounting seat; 711, extension foot; 7111, first part; 72, elastic plate; 720, avoiding hole; 721, arch part; 73, rotating arm; 731, abutting part; 74, mounting shaft. DETAILED DESCRIPTION

[0038] In order to make the above objectives, features and advantages of the present application more clear and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings. In the following description, a lot of specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many different ways than those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0039] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or there can be a middle component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or there can be a middle component. The terms "vertical", "horizontal", "upper", "lower", "left", "right", "side", "top", "bottom" and similar expressions used in the description of the present application are used only to describe various example structural parts and elements of the present application, but these terms are used herein only for the purpose of convenience of explanation and are determined based on the example orientation shown in the drawings, and do not indicate the only embodiment. Since the embodiments disclosed in the present application can be disposed in different directions, these terms indicating the direction are only for the purpose of explanation and should not be considered as a limitation, such as "upper" and "lower" are not necessarily limited to the direction opposite or consistent with the direction of gravity.

[0040] In addition, the terms "first", "second", are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0041] In the present application, unless otherwise explicitly specified and limited, the first feature is "on", "under" the second feature, which can be that the first feature is in direct contact with the second feature, or the first feature is indirectly in contact with the second feature through an intermediate medium. Moreover, the first feature is "above", "over" and "on" the second feature, which can be that the first feature is directly above or obliquely above the second feature, or only means that the first feature is higher than the second feature in horizontal height. The first feature is "below", "under" and "under" the second feature, which can be that the first feature is directly below or obliquely below the second feature, or only means that the first feature is lower than the second feature in horizontal height.

[0042] It should be noted that "axial arrangement" means that the overall arrangement direction is along the axial direction, including but not limited to axial extension, which can be at an angle with the axial direction.

[0043] Unless otherwise defined, all technical and scientific terms used in the specification of the present application have the same meaning as commonly understood by a person skilled in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments and are not intended to limit the present application. The term "and / or" used in the specification of the present application includes any and all combinations of one or more related listed items.

[0044] As Figures 1-10 shown, the present application discloses a pipe cutting tool. The pipe cutting tool comprises a handle 1, the handle 1 is provided with a mounting portion for adapting different cutting specifications of a cutter 3, the cutter 3 is detachably mounted on the mounting portion, the cutter 3 comprises a shell 31, the shell 31 is provided with a receiving groove 310 for accommodating a pipe, and a blade 32 for cutting the pipe is mounted on the peripheral wall of the receiving groove 310.

[0045] It should be noted that "cutters 3 of different cutting specifications" are used to cut pipes of different diameters. For example, a cutter for cutting 1-inch pipes (see Figure 3 ), a cutter for cutting 3 / 4-inch pipes (see Figure 4 ), or a cutter for cutting 1 / 2-inch pipes (see Figure 5 ).

[0046] It can be understood that by adapting cutters 3 of different cutting specifications on the mounting portion of the handle 1, the cutting diameter can be changed. When it is necessary to cut pipes of different diameters, only the corresponding cutter 3 needs to be mounted on the mounting portion, which is convenient to operate, overcomes the problem of pipe extrusion caused by adjusting the radial positioning position of the pipe by the roller 33 in the background art, and is conducive to ensuring the cutting accuracy and the quality of the pipe.

[0047] Further, the cutting knife 3 is rotatably constrained to the mounting portion about its own axis, and the extending direction of the axis of the cutting knife 3 is the same as or parallel to the axial direction of the pipe in which the cutting knife 3 is accommodated. In this way, the limited rotation angle problem of the wrist when the pipe is cut by rotating the hand-held handle 1 can be overcome by rotating the cutting knife 3 relative to the mounting portion, and the pipe can be conveniently circumferentially cut by rotating the cutting knife 3 relative to the mounting portion.

[0048] In order to maintain the smoothness of the rotation of the cutting knife 3 relative to the pipe, as shown in Figure 1 , Figures 3-6 , a roller 33 is mounted on the circumferential wall of the accommodating groove 310, and the roller 33 and the blade 32 are arranged along the circumferential direction of the accommodating groove 310. Illustratively, the roller 33 is one, two or more, and preferably two.

[0049] Specifically, the cutting knife 3 is arranged to be rotatable relative to the handle 1 in a first direction A, which is clockwise or counterclockwise. In this way, the cutting knife 3 can be unidirectionally rotated to cut the pipe.

[0050] In an embodiment, the mounting portion is a mounting surface. In this embodiment, as shown in Figure 1 and Figure 2 , the mounting portion is a mounting groove 20 for inserting the cutting knife 3, and the mounting groove 20 includes a first groove wall 21. As shown in Figures 2-6 , the wall surface of the housing 31 corresponding to the first groove wall 21 is defined as a first wall surface 311, and a transmission structure 4 for enabling the cutting knife 3 to rotate in the first direction A is arranged between the first groove wall 21 and the first wall surface 311.

[0051] Specifically, as shown in Figure 7 , the transmission structure 4 is a ratchet structure. As shown in Figures 2-6 , the ratchet structure includes a first tooth 41 arranged on the first groove wall 21 and a second tooth 42 arranged on the first wall surface 311, one of the first tooth 41 and the second tooth 42 is an arc-shaped ratchet tooth formed by connecting a plurality of tooth portions arranged in sequence along the rotation direction of the cutting knife 3, and the first tooth 41 is engaged with the second tooth 42 when the cutting knife 3 is in a state of being constrained in the mounting groove 20. In this way, the unidirectional rotation of the cutting knife 3 relative to the mounting portion is realized by the engagement of the first tooth 41 and the second tooth 42.

[0052] Illustratively, as shown in Figure 2 and Figure 9 , the first tooth 41 on the first groove wall 21 is an arc-shaped ratchet tooth, and as shown in Figures 3-6 , the second tooth 42 on the first wall surface 311 is a single tooth including only one tooth portion or a double tooth including two tooth portions. Specifically, the mounting groove 20 includes two first groove walls 21, and the two first groove walls 21 are arranged in opposite directions along the axial direction of the cutting knife 3, and at least one of the first groove walls 21 is provided with the first tooth 41.

[0053] In addition to the two first groove walls 21, the mounting groove 20 also includes an arc-shaped second groove wall. The second groove wall extends circumferentially along the first groove wall 21, and the outer edges of the two first groove walls 21 are respectively connected to the corresponding edges of the second groove wall.

[0054] In this embodiment, such as Figure 2 As shown, the first end 13 of the handle 1 is provided with two relatively spaced clamping plates 2. The inner walls of the two clamping plates 2 facing each other are both first groove walls 21. The two clamping plates 2 and the first end 13 of the handle 1 together form a mounting groove 20. The clamping plates 2 have clearance grooves 22 that are coaxially arranged with the receiving groove 310 and avoid the pipe. The clearance groove 22 and the receiving groove 310 have openings 5 ​​for the pipe to be inserted. In this way, the pipe can enter and exit the receiving groove 310 through the openings 5.

[0055] This application provides another embodiment, wherein at least one first groove wall 21 is provided with first teeth 41 spaced apart along the radial direction of the pipe. Thus, the presence of the first teeth 41 spaced apart along the radial direction allows them to mesh with second teeth 42 of cutters 3 of different cutting specifications, thereby better adapting to cutters 3 of different cutting specifications. There are at least two first teeth 41 spaced apart along the radial direction of the pipe.

[0056] Schematic, each of the two first groove walls 21 is provided with at least two first teeth 41 arranged at intervals along the radial direction of the tube. Or, as Figure 2 As shown, at least two first teeth 41 are provided on only one first groove wall 21, which are arranged at intervals along the radial direction of the tube.

[0057] In one embodiment, each arc-shaped ratchet corresponds to a second tooth 42. This application also provides an embodiment, specifically, as follows: Figure 2 and Figure 3 As shown, for each arc-shaped ratchet, the first wall surface 311 is provided with at least two second teeth 42 spaced apart along the length direction of the arc-shaped ratchet. That is, the first wall surface 311 of the housing 31 is provided with at least two second teeth 42 spaced apart along the length direction of the arc-shaped ratchet at the position corresponding to each arc-shaped ratchet. Indicatively, each arc-shaped ratchet corresponds to 2, 3, or more second teeth 42. Thus, with at least two second teeth 42 corresponding to each arc-shaped ratchet, the cutter 3 can rotate more reliably and smoothly.

[0058] In addition, to prevent misalignment of the cutter 3 during rotation, such as Figures 1-6 , Figure 9 and Figure 10As shown, a guide structure 6 for guiding the rotation of the cutter 3 is provided between the first groove wall 21 of the mounting groove 20 and the first wall surface 311 of the housing 31. The guide structure 6 includes a first guide portion on the first groove wall 21 and a second guide portion on the first wall surface 311 of the housing 31. The first guide portion and / or the second guide portion extend along the rotation direction of the cutter 3. When the cutter 3 is constrained within the mounting groove 20, the first guide portion and the second guide portion engage in a guiding fit. Thus, through the sliding engagement of the first guide portion and the second guide portion, misalignment of the cutter 3 during rotation can be avoided, making the rotation of the cutter 3 more reliable.

[0059] In another embodiment provided in this application, a first guide portion is provided on each of the two first groove walls 21 of the mounting groove 20, and a second guide portion is provided on each of the housing 31 at the position corresponding to the first guide portion. Alternatively, a first guide portion may be provided on only one groove wall.

[0060] Furthermore, one of the first guide portion and the second guide portion is a sliding portion, and the other of the first guide portion and the second guide portion is a groove 62, which extends along the rotation direction of the cutter 3. Schematic, the first guide portion is a sliding portion, and the second guide portion is a groove. Or, as... Figure 2 , Figure 9 and Figure 10 As shown, the first guide part is a groove 62, and the second guide part is a sliding part. That is to say, both first groove walls 21 are provided with grooves 62.

[0061] In one embodiment, the aforementioned groove 62 is a recess formed on the first groove wall 21 or the first wall surface 311. In another embodiment, the aforementioned groove 62 is formed between two adjacent arc-shaped ratchet teeth (first teeth 41), and a sliding part is provided on the first wall surface 311 of the housing 31. When the cutter 3 is constrained within the mounting groove 20, the groove 62 and the sliding part are in sliding engagement. Thus, through the sliding engagement of the groove 62 and the sliding part, misalignment of the cutter 3 during rotation can be avoided, making the rotation of the cutter 3 more reliable.

[0062] In this embodiment, such as Figures 3-6 As shown, the sliding part is a protrusion 61 that is adapted to the groove 62 and extends along the length direction of the groove 62. In addition, the sliding part can also be a slider or a protrusion.

[0063] There are various possible locations for the second guide portion. In this example, the second guide portion is located at the outer edge of the first wall surface 311. For instance, the second guide portion is a protrusion 61 located at the outer edge of the first wall surface 311.

[0064] In addition, such as Figure 4As shown, the second guiding part of the cutter 3 of different cutting specifications is adapted to the same first guiding part by being arranged between the outer edge of the first wall surface 311 and the accommodating groove 310. Figure 3 The protrusions 61 of the cutter in the middle Figure 4 are adapted to the same sliding groove 62.

[0065] In addition to the above-mentioned embodiments, the present application also provides an embodiment: the second teeth 42 on the shell 31 of the cutter 3 are arc-shaped ratchets, and the first teeth 41 are single teeth including only one tooth part or double teeth including two tooth parts.

[0066] Since the cutter 3 is detachably installed in the above-mentioned installation groove 20, in order to facilitate the installation and removal of the cutter 3, as shown in Figure 7 and Figure 8 , a locking mechanism 7 is arranged on the handle 1 to lock or unlock the two clamping plates 2, and the first teeth 41 are engaged with the second teeth 42 when the two clamping plates 2 are in the locked state. In this way, when the cutter 3 is inserted into the installation groove 20, the cutter 3 can be clamped by locking the two clamping plates 2, and at this time, the first teeth 41 and the second teeth 42 are engaged, facilitating the rotation of the cutter 3.

[0067] In order to facilitate the holding of the pipe cutting tool, in the present embodiment, in order for the handle 1 to include two holding parts spliced in sequence along the axial direction of the cutter 3, a clamping plate 2 is fixedly connected to the first end part 13 of each holding part, and the locking mechanism 7 is arranged on the two holding parts to lock or unlock the two holding parts. In this way, the locking or unlocking of the two clamping plates 2 can be realized by locking or unlocking the two holding parts, and when the two clamping plates 2 are in the locked state, the cutter 3 after installation is prevented from being removed from the installation groove 20, thereby improving the reliability of the cutter 3 after installation.

[0068] In the present embodiment, the above-mentioned clamping plate 2 extends along the length direction of the holding part. In addition, the above-mentioned holding part is fixedly connected or integrally formed with the clamping plate 2.

[0069] As shown in Figures 7-10 , the two holding parts are defined as a first holding part 11 and a second holding part 12, respectively, as shown in Figure 7 and Figure 8 , the first holding part 11 is formed with an assembly groove 111 on the side away from the second holding part 12. The locking mechanism 7 includes a mounting seat 71, an elastic member, and a rotating arm 73. The mounting seat 71 is fixedly connected with the second holding part 12, and the mounting seat 71 is provided with an extension foot 711 extending into the assembly groove 111. The elastic member is constrained in the assembly groove 111, and the elastic member is formed with an avoiding hole 720 through which the extension foot 711 passes out, and the part of the extension foot 711 passing out of the avoiding hole 720 is defined as a first part 7111.

[0070] The first end of the rotating arm 73 is rotatably connected to the first part 7111 through a mounting shaft 74 extending along the radial direction of the cutter 3. The first end of the rotating arm 73 has an abutting portion 731 extending towards the elastic member. When the two clamping plates 2 are locked, the abutting portion 731 abuts against the elastic member, thereby causing the two clamping plates 2 to abut against each other. When the two clamping plates 2 are unlocked, the abutting portion 731 is separated from the elastic member.

[0071] Thus, when the two clamping plates 2 need to be locked, the second end of the rotating arm 73 is rotated to cause the abutting portion 731 to abut against the elastic member, and the elastic member abuts against the first clamping plate 11, thereby causing the first clamping plate 11 and the second clamping plate 12 to abut against each other, and the cutter 3 is axially positioned in the mounting groove 20. When the two clamping plates 2 need to be unlocked, the rotating arm 73 is rotated to separate the abutting portion 731 from the elastic member, and the first clamping plate 11 and the second clamping plate 12 can be separated, thereby allowing the cutter 3 to be inserted into the mounting groove 20.

[0072] The elastic member is an elastic plate 72, and the avoiding hole 720 is formed in the elastic plate 72. The elastic plate 72 has an arch portion 721 arching away from the mounting base 71. When the elastic member abuts against the abutting portion 731, the arch portion 721 abuts against the abutting portion 731. In addition, the elastic member includes a plurality of springs arranged along the circumferential direction of the extending portion, and the plurality of springs surround the avoiding hole 720.

[0073] In an embodiment, the two clamping plates are in the form of separate parts. In this embodiment, the second ends of the two clamping plates are rotatably connected through a connecting shaft 14 extending along the radial direction of the cutter 3, i.e., the connecting shaft 14 and the mounting shaft 74 are coaxial.

[0074] It should be noted that the axial direction of the cutter 3 is the axial direction of the pipe to be cut, and is defined as the second direction B. The radial direction of the cutter 3 is the radial direction of the pipe to be cut, and is defined as the third direction C.

[0075] The technical features of the above-described embodiments can be combined in any manner. For the sake of brevity, not all possible combinations of the technical features in the above-described embodiments are described, and it should be considered that any combination of the technical features is within the scope of the present disclosure as long as the combination does not result in contradictions.

[0076] The above-described embodiments are merely illustrative of several embodiments of the present application, which are described in more detail and in a specific manner, but should not be construed as limiting the scope of the patent application. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A pipe cutting tool, characterized by, The handle is provided with a mounting portion for adapting to different cutting specifications of a cutter, the cutter is detachably mounted on the mounting portion, the cutter comprises a housing provided with a receiving groove for receiving a pipe, and a blade for cutting the pipe is mounted on the peripheral wall of the receiving groove.

2. The pipe cutting tool of claim 1, wherein, The cutter is rotatably constrained on the mounting portion around its own axis.

3. The pipe cutting tool of claim 2, wherein, The cutter is arranged to be rotatable relative to the handle along a first direction of clockwise or counterclockwise.

4. The pipe cutting tool of claim 3, wherein, The mounting portion is a mounting groove for inserting the cutter, the mounting groove comprises a first groove wall, a wall surface of the housing corresponding to the first groove wall is defined as a first wall surface, and a transmission structure for enabling the cutter to rotate along the first direction is matched between the first groove wall and the first wall surface.

5. The pipe cutting tool of claim 4, wherein, The transmission structure is a ratchet structure, the ratchet structure comprises a first tooth provided on the first groove wall and a second tooth provided on the first wall surface, one of the first tooth and the second tooth is an arc-shaped ratchet tooth formed by connecting a plurality of tooth portions arranged in sequence along the rotation direction of the cutter, and the first tooth is engaged with the second tooth when the cutter is in a state of being constrained in the mounting groove.

6. The pipe cutting tool of claim 5, wherein, The first groove wall has two first groove walls arranged in opposite directions along the axial direction of the cutter, and the first tooth is arranged on at least one of the first groove walls.

7. The pipe cutting tool of claim 6, wherein, A first end portion of the handle is provided with two oppositely spaced clamping plates, the inner walls of the two clamping plates facing each other are the first groove walls, and the mounting groove is formed by the two clamping plates and the first end portion of the handle, the clamping plates are provided with an avoiding groove coaxially arranged with the receiving groove and avoiding the pipe, and the avoiding groove and the receiving groove are provided with openings for inserting the pipe.

8. The pipe cutting tool of claim 7, wherein, The first tooth is arranged on at least one of the first groove walls in a spaced manner along the radial direction of the pipe.

9. The pipe cutting tool of claim 8, wherein, The first tooth is an arc-shaped ratchet tooth, and the second tooth is a single tooth comprising only one tooth portion; or the first tooth is a single tooth comprising only one tooth portion, and the second tooth is an arc-shaped ratchet tooth.

10. The pipe cutting tool of claim 8, wherein, The first tooth is an arc-shaped ratchet tooth, and the first wall surface is provided with at least two second teeth arranged in a spaced manner along the length direction of each arc-shaped ratchet tooth.

11. The pipe cutting tool of claim 8, wherein, The first tooth is an arc-shaped ratchet tooth, a sliding groove is formed between adjacent two arc-shaped ratchet teeth, and the first wall surface is provided with a sliding portion slidingly matched with the sliding groove.

12. The pipe cutting tool of claim 11, wherein, The sliding portion is a protruding strip matched with the sliding groove and extending along the length direction of the sliding groove.

13. The pipe cutting tool of claim 7, wherein, The first groove wall and the first wall surface are matched with a guide structure for guiding the rotation of the cutter, the guide structure comprises a first guide portion provided on the first groove wall and a second guide portion provided on the first wall surface, the first guide portion and / or the second guide portion extend along the rotation direction of the cutter, and the first guide portion and the second guide portion are guided and matched when the cutter is in a state of being constrained in the mounting groove.

14. The pipe cutting tool of claim 13, wherein, The first slot wall has two, two first slot walls are arranged opposite along the axial direction of the cutter, and the first guide part is arranged on each of the two first slot walls.

15. The pipe cutting tool of claim 14, wherein, One of the first guide part and the second guide part is a sliding part, and the other is a sliding groove extending along the rotation direction of the cutter.

16. The pipe cutting tool of claim 14, wherein, The second guide part is arranged at the outer edge of the first wall surface, or the second guide part is arranged between the outer edge of the first wall surface and the accommodating groove, so that the second guide parts of cutters of different cutting specifications are adapted to the same first guide part.

17. The pipe cutting tool of any one of claims 7 to 16, wherein, The handle is provided with a locking mechanism for locking or unlocking the two clamping plates, and the first tooth is engaged with the second tooth when the two clamping plates are in the locked state.

18. The pipe cutting tool of claim 17, wherein, The handle includes two holding parts connected in sequence along the axial direction of the cutter, and the first end of each holding part is fixedly connected with a clamping plate.

19. The pipe cutting tool of claim 18, wherein, The first holding part is formed with an assembly groove on the side away from the second holding part, and the locking mechanism includes: a mounting seat fixedly connected with the second holding part, the mounting seat being provided with an extension leg extending into the assembly groove; a resilient member constrained in the assembly groove, the resilient member being formed with an avoidance hole for the extension leg to pass through, and the part of the extension leg passing through the avoidance hole being defined as a first part; a rotating arm, a first end of the rotating arm being rotatably connected with the first part through a mounting shaft extending in the radial direction of the cutter, and the first end of the rotating arm having an abutting portion extending toward the resilient member, the abutting portion abutting against the resilient member when the two holding parts are in the locked state, so that the two holding parts are in the abutting state, and the abutting portion being separated from the resilient member when the two holding parts are in the unlocked state.

20. The pipe cutting tool of claim 18, wherein, The second ends of the two holding parts are rotatably connected through a connecting shaft extending in the radial direction of the cutter.

Images