Cutting machine

Abstract

The utility model provides a cutting machine, which relates to the technical field of steel pipe processing equipment and comprises a frame, a pipe fitting conveying mechanism, a pipe fitting cutting device, a length measuring auxiliary fixing mechanism and an auxiliary positioning mechanism, wherein the pipe fitting cutting device and the auxiliary positioning mechanism are oppositely arranged in the width direction of the frame, a conveying channel is formed between the pipe fitting cutting device and the auxiliary positioning mechanism, and a cutting blade of the pipe fitting cutting device can conduct cutting action in the plane where the positioning surface of the auxiliary positioning mechanism is located; the length measuring auxiliary fixing mechanism comprises a sliding table module, a length measuring module and a pipe fitting blocking piece and is matched with the auxiliary positioning mechanism to conduct auxiliary positioning on the pipe fittings in the conveying channel before cutting. The technical problem that in the prior art, when a steel pipe is fed to a pre-cutting position, due to the fact that an effective positioning mechanism is lacked for fixing the steel pipe, the steel pipe can be displaced in the cutting process, and then the cutting precision is affected is solved.

Description

Technical Field

[0001] This utility model relates to the technical field of steel pipe processing equipment, and in particular to a cutting machine. Background Technology

[0002] Steel pipe cutting has wide applications in industrial production, especially in fields such as construction, machinery manufacturing, and pipeline engineering. In existing technologies, steel pipe cutting machines are typically used to cut steel pipes to predetermined dimensions to meet the needs of different applications. The workflow of a traditional steel pipe cutting machine is roughly as follows: first, the steel pipe is fed into the cutting equipment; the feeding mechanism pushes the pipe to the pre-cutting position; then, the cutting device is activated to complete the cutting operation.

[0003] However, in practical applications, when the steel pipe is fed to the pre-cutting position, the lack of an effective positioning mechanism to fix it may cause the steel pipe to shift during the cutting process, which may affect the cutting accuracy and result in the cut steel pipe dimensions not meeting the design requirements, thus affecting product quality and subsequent assembly effects. Utility Model Content

[0004] The purpose of this invention is to provide a cutting machine to alleviate the aforementioned technical problems existing in the prior art.

[0005] To achieve the above objectives, the embodiments of this utility model adopt the following technical solutions:

[0006] This utility model provides a cutting machine, including a frame and a pipe conveying mechanism and a pipe cutting device installed on the frame, with the conveying direction of the pipe conveying mechanism as the length direction of the frame. The cutting machine also includes a length measuring auxiliary fixing mechanism and an auxiliary positioning mechanism installed on the frame; wherein: the pipe cutting device and the auxiliary positioning mechanism are arranged opposite to each other along the width direction of the frame, forming a conveying channel between the pipe cutting device and the auxiliary positioning mechanism; the pipe cutting device has a cutting blade, and the cutting blade is capable of cutting within the plane of the positioning surface of the auxiliary positioning mechanism; the length measuring auxiliary fixing mechanism and the auxiliary positioning mechanism are arranged at intervals along the length direction of the frame on the same side of the conveying channel;

[0007] The length measurement auxiliary fixing mechanism includes:

[0008] A slide module includes a slide rail fixed to the frame and extending along the length of the frame, a slide table slidably mounted on the slide rail, and a slide table locking structure for fixing the slide table to the slide rail.

[0009] A length measuring module includes a limiting rod and a limiting rod positioning component. The limiting rod extends along the length direction of the frame and is slidably mounted on the slide table along the length direction of the frame. The limiting rod positioning component is used to lock the limiting rod to the slide table. The slide table can slide along the slide rail so that one end of the limiting rod locked to the slide table abuts against the positioning surface of the auxiliary positioning mechanism.

[0010] The pipe fittings and stops are rotatably mounted on the slide table and have a blocking station extending into the conveying channel and an open station that avoids the conveying channel.

[0011] In an optional embodiment, the auxiliary positioning mechanism includes a fixed base, a telescopic rod, and a telescopic drive unit;

[0012] The fixed base is fixed to the frame; the telescopic drive unit is installed on the fixed base, the telescopic rod extends along the width direction of the frame and one end of it is connected to the telescopic drive unit for transmission, and the telescopic drive unit can drive the telescopic rod to extend or retract so that the other end of the telescopic rod extends into or out of the conveying channel.

[0013] In an optional embodiment, a positioning guide wheel is rotatably mounted at the end of the telescopic rod away from the telescopic drive unit, and the axis of rotation of the positioning guide wheel extends along the length direction of the frame.

[0014] In an optional embodiment, in the length measurement auxiliary fixing mechanism, the slide table is at least partially sleeved outside the slide rail, and a threaded hole is provided on one side of the slide table. The slide table locking structure is a threaded knob with a screw, and the screw is threadedly installed inside the threaded hole so that the end of the screw away from the knob can abut against or disengage from the surface of the slide rail.

[0015] In an optional embodiment, in the length measurement auxiliary fixing mechanism, a mounting base is fixed on the slide table, the limiting rod passes through the mounting base, a groove is provided on one side surface of the limiting rod, a threaded hole communicating with the groove is provided on one side surface of the mounting base, and the limiting rod positioning component is a screw component threaded into the threaded hole. The screw component can abut against or move away from the bottom surface of the groove to lock or release the limiting rod on the slide table.

[0016] In an optional embodiment, in the length measurement auxiliary fixing mechanism, a mounting base is fixed on the slide, and the pipe fitting stop is installed on the mounting base by bolts. When the bolts are loosened, the pipe fitting stop is allowed to rotate relative to the slide.

[0017] In an optional embodiment, the length measuring auxiliary fixing mechanism has a scale line extending along the length direction of the frame on the limiting rod.

[0018] In an optional embodiment, in the length measurement auxiliary fixing mechanism, the pipe stop is formed as a sheet-like elongated structure, and the thickness direction of the sheet-like elongated structure extends along the length direction of the frame.

[0019] In an optional embodiment, the pipe cutting device includes a blade holder, a cutting blade, a rotary drive mechanism, and a lifting drive mechanism.

[0020] The lifting drive mechanism includes a lifting drive unit and a linkage rod that is connected to the lifting drive unit.

[0021] The tool holder is hinged to the frame and one end of it is hinged to the linkage rod;

[0022] The cutting blade is rotatably mounted on the other end of the blade holder and is connected to the rotary drive mechanism.

[0023] The rotary drive mechanism is mounted on the tool holder and is used to drive the cutting blade to rotate;

[0024] The cutting blade and the auxiliary positioning mechanism are arranged opposite each other along the width direction of the frame.

[0025] In an optional embodiment, the cutting machine further includes a waste recycling bin; a waste recycling port is provided on the frame below the cutting device, the waste recycling bin is installed inside the frame in such a way that it can slide in or out of the frame, and its top is provided with a box opening for receiving waste falling from the waste recycling port.

[0026] This utility model utilizes a length measurement auxiliary fixing mechanism and an auxiliary positioning mechanism in conjunction with a pipe conveying mechanism and a pipe cutting device to perform auxiliary positioning of the pipe in the conveying channel before cutting. This alleviates the technical problem in the prior art where, when the steel pipe is fed to the pre-cutting position, the lack of an effective positioning mechanism to fix it may cause displacement of the steel pipe during the cutting process, thus affecting the cutting accuracy. This is beneficial to improve cutting efficiency while ensuring cutting accuracy. Attached Figure Description

[0027] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the overall structure of the cutting machine in its working state, provided as an embodiment of the present utility model.

[0029] Figure 2 for Figure 1 The diagram shows the overall structure of the cutting machine after the top area of ​​the frame has been removed;

[0030] Figure 3 for Figure 2 Enlarged view of the local structure of part A in the middle;

[0031] Figure 4 A structural diagram showing the cooperation between the length measuring auxiliary fixing mechanism and the auxiliary positioning mechanism in the cutting machine provided in this embodiment of the utility model;

[0032] Figure 5 A schematic diagram of the overall structure of the pipe cutting device in the cutting machine provided in this embodiment of the utility model;

[0033] Figure 6 A schematic diagram of the overall structure of the rotary drive mechanism in the cutting machine provided in this embodiment of the utility model;

[0034] Figure 7 A schematic diagram of the cooperative structure of the pipe cutting device, the lifting drive mechanism, and the rotating drive mechanism in the cutting machine provided in this embodiment of the utility model;

[0035] Figure 8 This is a perspective structural diagram of the waste recycling bin installed within the frame in the cutting machine provided in this embodiment of the utility model.

[0036] Icon: 100 - Pipe Fittings;

[0037] 1-Frame; 11-Waste recycling port;

[0038] 2- Pipe fitting conveying mechanism;

[0039] 3-Pipe cutting device; 31-Tool holder; 32-Cutting blade; 33-Rotary drive mechanism; 34-Lifting drive mechanism; 341-Lifting drive unit; 342-Linkage rod;

[0040] 4-Length measuring auxiliary fixing mechanism; 41-Slide table module; 411-Slide rail; 412-Slide table; 413-Slide table locking structure; 42-Length measuring module; 421-Limit rod; 422-Limit rod positioning component; 43-Pipe fitting stop; 44-Mounting base;

[0041] 5-Auxiliary positioning mechanism; 51-Fixed base; 52-Telescopic rod; 53-Telescopic drive unit; 54-Positioning guide wheel;

[0042] 6-Waste recycling bin. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0045] It should be noted that similar labels and letters in the accompanying drawings indicate similar items. Therefore, once an item is defined in one accompanying drawing, it does not need to be further defined and explained in subsequent accompanying drawings.

[0046] In the description of this utility model, it should be noted that:

[0047] Unless otherwise expressly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0048] The terms “upper,” “lower,” “length,” “width,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this utility model is usually placed during use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0049] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the features of the following embodiments and their optional embodiments can be combined with each other.

[0050] This embodiment provides a cutting machine, see reference. Figures 1 to 8The cutting machine includes a frame 1, a pipe conveying mechanism 2 and a pipe cutting device 3 installed on the frame 1, with the conveying direction of the pipe conveying mechanism 2 as the length direction of the frame 1. The cutting machine also includes a length measuring auxiliary fixing mechanism 4 and an auxiliary positioning mechanism 5 installed on the frame 1. The pipe cutting device 3 and the auxiliary positioning mechanism 5 are arranged opposite each other along the width direction of the frame 1, forming a conveying channel between the pipe cutting device 3 and the auxiliary positioning mechanism 5. The pipe cutting device 3 has a cutting blade 32, which can perform cutting actions in the plane where the positioning surface of the auxiliary positioning mechanism 5 is located. The length measuring auxiliary fixing mechanism 4 and the auxiliary positioning mechanism 5 are arranged at intervals on the same side of the conveying channel along the length direction of the frame 1.

[0051] More specifically, the aforementioned length measurement auxiliary fixing mechanism 4 includes a slide module 41, a length measurement module 42, and a pipe fitting stop 43. The slide module 41 includes a slide rail 411 fixed to the frame 1 and extending along the length direction of the frame 1, a slide 412 slidably mounted on the slide rail 411, and a slide locking structure 413 for fixing the slide 412 to the slide rail 411. The length measurement module 42 includes a limiting rod 421 and a limiting rod positioning member 422. The limiting rod 421 extends along the length direction of the frame 1 and is slidably mounted on the slide 412 along the length direction of the frame 1. The limiting rod positioning member 422 is used to lock the limiting rod 421 to the slide 412. The slide 412 can slide along the slide rail 411 so that one end of the limiting rod 421 locked to the slide 412 abuts against the positioning surface of the auxiliary positioning mechanism 5. The pipe fitting stop 43 is rotatably mounted on the slide table 412, and it has a blocking position extending into the conveyor channel and an open position that avoids the conveyor channel.

[0052] When in use, pre-machine roughly segmented grooves on the outer surface of the fitting 100. The width of the segmented grooves needs to be greater than or equal to the thickness of the fitting stop 43 along the length of the frame 1. For example, when it is necessary to cut a pipe section with a length of less than 1m, a segmented groove can be cut every 1m on the outer surface of the fitting 100.

[0053] To adjust the length measuring auxiliary fixing mechanism 4, firstly, release the locking of the limiting rod 421 by the limiting rod positioning member 422. Adjust the position of the limiting rod 421 on the slide table 412 according to the required length of the pipe section to be cut, so that the length between the end face of the limiting rod 421 facing the auxiliary positioning mechanism 5 and the surface of the pipe stop 43 facing the auxiliary positioning mechanism 5 along the length direction of the frame 1 is the preset length. Then, use the limiting rod positioning member 422 to lock the limiting rod 421 to the slide table 412. Release the locking of the slide table locking structure 413 on the slide table 412, and slide the slide table 412 along the slide rail 411 towards the auxiliary positioning mechanism 5 until one end of the limiting rod 421 abuts against the positioning surface of the auxiliary positioning mechanism 5. Use the slide table locking structure 413 to lock the slide table 412 to the slide rail 411.

[0054] Keep the pipe fitting stop 43 in an open position that avoids the conveying channel. Install one end of the pipe fitting 100 on the pipe fitting conveying mechanism 2. The pipe fitting conveying mechanism 2 drives the pipe fitting 100 to be conveyed along the conveying channel. When a segmented groove of the pipe fitting 100 is conveyed to the position of the pipe fitting stop 43, rotate the pipe fitting stop 43 to the blocking position so that the pipe fitting stop 43 is embedded in the segmented groove of the pipe fitting 100, thereby positioning the pipe fitting 100.

[0055] Since the pipe cutting device 3 and the auxiliary positioning mechanism 5 are arranged opposite each other along the width direction of the frame 1, the cutting blade 32 of the pipe cutting device 3 can perform cutting action in the plane where the positioning surface of the auxiliary positioning mechanism 5 is located. Thus, along the length direction of the frame 1, the length between the end face of the limiting rod 421 facing the auxiliary positioning mechanism 5 and the surface of the pipe stop 43 facing the auxiliary positioning mechanism 5, that is, the length between the surface of the pipe stop 43 facing the auxiliary positioning mechanism 5 and the positioning surface of the auxiliary positioning mechanism 5, is exactly the length between the surface of the pipe stop 43 facing the auxiliary positioning mechanism 5 and the cutting blade 32 of the pipe cutting device 3. At this time, the length of the pipe cut by the cutting blade 32 of the pipe cutting device 3 is exactly the preset length, and the accuracy standard is high, the operation is simple, and the displacement of the pipe 100 during the cutting process can be prevented.

[0056] By continuously feeding according to the above steps, precise cutting of multiple pipe sections 100 can be achieved.

[0057] In summary, this embodiment utilizes the length measurement auxiliary fixing mechanism 4 and the auxiliary positioning mechanism 5 in conjunction with the pipe conveying mechanism 2 and the pipe cutting device 3 to perform auxiliary positioning of the pipe 100 in the conveying channel before cutting. This alleviates the technical problem in the prior art where, when the steel pipe is fed to the pre-cutting position, the lack of an effective positioning mechanism to fix it may cause displacement of the steel pipe during the cutting process, thus affecting the cutting accuracy. This is beneficial to improve cutting efficiency while ensuring cutting accuracy.

[0058] In this embodiment, in an optional implementation of the auxiliary positioning mechanism 5, the auxiliary positioning mechanism 5 specifically includes a fixed base 51, a telescopic rod 52, and a telescopic drive unit 53; the fixed base 51 is fixed to the frame 1; the telescopic drive unit 53 is installed on the fixed base 51, the telescopic rod 52 extends along the width direction of the frame 1 and one end of it is connected to the telescopic drive unit 53 in a transmission manner, and the telescopic drive unit 53 can drive the telescopic rod 52 to extend or retract so that the other end of the telescopic rod 52 extends into or out of the conveying channel. In this optional implementation, the telescopic drive unit 53 may be selected, but is not limited to, a cylinder piston rod assembly, an electric push rod assembly, or other telescopic drive unit 53 components, so that the side surface of the telescopic rod 52 facing the limiting rod 421 can be used as the positioning surface of the auxiliary positioning mechanism 5. When the pipe 100 is cut, by extending the telescopic rod 52 into the conveying channel and abutting against the side surface of the pipe 100, the pipe 100 is assisted in positioning, further improving the stability and cutting accuracy during cutting. Optionally, a positioning guide wheel 54 is rotatably mounted on the end of the telescopic rod 52 away from the telescopic drive unit 53, and the rotation axis of the positioning guide wheel 54 extends along the length of the frame 1. In this optional embodiment, the side surface of the telescopic rod 52 facing the limiting rod 421 can still be selected as the positioning surface of the auxiliary positioning mechanism 5. However, when the length of the limiting rod 421 is preset, the length between the positioning guide wheel 54 and the side surface of the telescopic rod 52 facing the limiting rod 421 needs to be calculated to design and position the limiting rod 421 to ensure the accuracy of the positioning. When cutting the pipe fitting 100, the pipe fitting conveying mechanism 2 can convey and rotate at the same time so that the cutting blade 32 can cut quickly. The presence of the positioning guide wheel 54 can, on the one hand, abut against the side surface of the pipe fitting 100 when the telescopic rod 52 extends into the conveying channel to assist in the positioning of the pipe fitting 100, and on the other hand, allow the pipe fitting 100 to rotate and reduce the friction between the pipe fitting 100 and the end of the telescopic rod 52 when rotating, improve the cutting smoothness, and avoid stress damage to the pipe fitting 100.

[0059] In this embodiment, in an optional implementation of the above-mentioned length measurement auxiliary fixing mechanism 4, the slide table 412 is at least partially sleeved on the outside of the slide rail 411, and a threaded hole is provided on one side of the slide table 412. The slide table locking structure 413 is a threaded knob with a screw, and the screw is threadedly installed inside the threaded hole so that the end of the screw away from the knob can abut or disengage from the surface of the slide rail 411.

[0060] Optionally, a mounting base 44 is fixed on the slide table 412, and a limiting rod 421 passes through the mounting base 44. A groove is provided on one side surface of the limiting rod 421, and a threaded hole communicating with the groove is provided on one side surface of the mounting base 44. The limiting rod positioning member 422 is a screw member that is threaded into the threaded hole. The screw member can abut against or move away from the bottom surface of the groove to lock or release the limiting rod 421 on the slide table 412.

[0061] Optionally, the pipe stop 43 is bolted to the mounting base 44, and with the bolts loosened, the pipe stop 43 is allowed to rotate relative to the slide table 412.

[0062] Optionally, the limiting rod 421 is provided with scale lines extending along the length of the frame 1 to help with quick positioning.

[0063] Optionally, the pipe fitting stop 43 is formed as a sheet-like elongated structure, and the thickness direction of the sheet-like elongated structure extends along the length direction of the frame 1.

[0064] In this embodiment, as an optional structure of the pipe cutting device 3, the pipe cutting device 3 includes a blade holder 31, a cutting blade 32, a rotary drive mechanism 33, and a lifting drive mechanism 34. The lifting drive mechanism 34 includes a lifting drive unit 341 and a linkage rod 342 that is driveably connected to the lifting drive unit 341. The blade holder 31 is hinged to the frame 1, and one end of it is hinged to the linkage rod 342. The cutting blade 32 is rotatably mounted on the other end of the blade holder 31, and the cutting blade 32 is driveably connected to the rotary drive mechanism 33. The rotary drive mechanism 33 is mounted on the blade holder 31 and is used to drive the cutting blade 32 to rotate. The cutting blade 32 and the auxiliary positioning mechanism 5 are arranged opposite to each other along the width direction of the frame 1. The lifting drive unit 341 may be, but is not limited to, a motor, and the transmission mechanism may be, but is not limited to, a conveyor belt pulley assembly.

[0065] like Figure 8 As shown, in an optional embodiment of this invention, the cutting machine further includes a waste recycling bin 6; a waste recycling port 11 is provided on the frame 1 at the part below the cutting device, and the waste recycling bin 6 is installed inside the frame 1 in such a way that it can slide into or out of the frame 1. The top of the bin is provided with a box opening for receiving waste falling from the waste recycling port 11, so that the waste cut off can be recycled while cutting during the cutting process.

[0066] Finally, it should be noted that the above embodiments and optional implementations in this specification are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing optional implementations, or equivalent substitutions can be made to some or all of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model. In addition, it is emphasized again that, in the absence of conflict, the features of the embodiments and optional implementations in the embodiments in this specification can be combined with each other.

Claims

1. A cutting machine comprising a frame (1) and a pipe conveying mechanism (2) and a pipe cutting device (3) mounted to the frame (1), with the conveying direction of the pipe conveying mechanism (2) being the length direction of the frame (1), characterized in that: The cutting machine further comprises a length-measuring auxiliary fixing mechanism (4) and an auxiliary positioning mechanism (5) mounted on the frame (1); wherein: the pipe cutting device (3) and the auxiliary positioning mechanism (5) are oppositely arranged along the width direction of the frame (1), forming a conveying passage between the pipe cutting device (3) and the auxiliary positioning mechanism (5), the pipe cutting device (3) is provided with a cutting blade (32) capable of performing a cutting action in the plane of the positioning surface of the auxiliary positioning mechanism (5); the length-measuring auxiliary fixing mechanism (4) and the auxiliary positioning mechanism (5) are arranged on the same side of the conveying passage along the length direction of the frame (1); The length-measuring auxiliary fixing mechanism (4) comprises: a sliding table module (41) comprising a sliding rail (411) fixed to the frame (1) and extending along the length direction of the frame (1), a sliding table (412) slidingly mounted on the sliding rail (411), and a sliding table locking structure (413) for fixing the sliding table (412) to the sliding rail (411); a length-measuring module (42) comprising a limiting rod (421) extending along the length direction of the frame (1) and slidingly mounted on the sliding table (412) along the length direction of the frame (1), and a limiting rod positioning member (422) for locking the limiting rod (421) to the sliding table (412); the sliding table (412) can slide along the sliding rail (411) to make one end of the limiting rod (421) locked to the sliding table (412) abut against the positioning surface of the auxiliary positioning mechanism (5); and a pipe blocking piece (43) rotationally mounted on the sliding table (412) and having a blocking station extending towards the inside of the conveying passage and an open station avoiding the conveying passage.

2. The cutting machine of claim 1, wherein: The auxiliary positioning mechanism (5) comprises a fixed seat (51), a telescopic rod (52), and a telescopic driving part (53); The fixed seat (51) is fixed to the frame (1); the telescopic driving part (53) is mounted on the fixed seat (51), the telescopic rod (52) extends along the width direction of the frame (1) and one end thereof is in driving connection with the telescopic driving part (53), and the telescopic driving part (53) can drive the telescopic rod (52) to extend or retract so that the other end of the telescopic rod (52) extends into or exits the conveying passage.

3. The cutting machine of claim 2, wherein: One end of the telescopic rod (52) away from the telescopic driving part (53) is rotationally mounted with a positioning guide wheel (54), and the rotation axis of the positioning guide wheel (54) extends along the length direction of the frame (1).

4. The cutting machine of claim 1, wherein: The measuring length auxiliary fixing mechanism (4) is characterized in that the sliding table (412) is at least partially sleeved outside the sliding rail (411), a threaded hole is arranged on one side of the sliding table (412), the sliding table locking structure (413) is a threaded knob with a screw rod, the screw rod is threadedly installed in the threaded hole, and one end of the screw rod away from the threaded knob can abut against or be separated from the surface of the sliding rail (411).

5. The cutting machine of claim 1, wherein: The measuring length auxiliary fixing mechanism (4) is characterized in that the sliding table (412) is fixed with a mounting seat (44), the limiting rod (421) penetrates through the mounting seat (44), a sliding groove is arranged on one side surface of the limiting rod (421), one side surface of the mounting seat (44) is provided with a threaded hole in communication with the sliding groove, and the limiting rod positioning piece (422) is a screw rod piece threadedly installed in the threaded hole, the screw rod piece can abut against or be away from the bottom surface of the sliding groove, and the limiting rod (421) is locked or released on the sliding table (412).

6. The cutting machine of claim 1, wherein: The measuring length auxiliary fixing mechanism (4) is characterized in that the sliding table (412) is fixed with a mounting seat (44), the pipe blocking piece (43) is installed on the mounting seat (44) through a bolt, and the bolt is loosened to allow the pipe blocking piece (43) to rotate relative to the sliding table (412).

7. The cutting machine of claim 1, wherein: The measuring length auxiliary fixing mechanism (4) is characterized in that the limiting rod (421) is provided with a scale line extending along the length direction of the frame (1).

8. The cutting machine of claim 1, wherein: The measuring length auxiliary fixing mechanism (4) is characterized in that the pipe blocking piece (43) is formed in a sheet-shaped long strip structure, and the thickness direction of the sheet-shaped long strip structure extends along the length direction of the frame (1).

9. The cutting machine of claim 1, wherein: The pipe cutting device (3) comprises a cutter holder (31), a cutting blade (32), a rotary driving mechanism (33) and a lifting driving mechanism (34). The lifting driving mechanism (34) comprises a lifting driving part (341) and a linkage rod (342) in transmission connection with the lifting driving part (341). The cutter holder (31) is hinged to the frame (1) and one end thereof is hinged to the linkage rod (342). The cutting blade (32) is rotationally installed at the other end of the cutter holder (31), and the cutting blade (32) is in transmission connection with the rotary driving mechanism (33). The rotary driving mechanism (33) is installed on the cutter holder (31) and used for driving the cutting blade (32) to rotate. The cutting blade (32) and the auxiliary positioning mechanism (5) are oppositely arranged along the width direction of the frame (1).

10. The cutting machine of claim 1, wherein: The cutting machine further comprises a waste recycling box (6), a waste recycling opening is arranged on the frame (1) below the cutting device, the waste recycling box (6) is installed in the frame (1) in a manner that it can slide into or out of the frame (1), and a box opening is arranged on the top of the waste recycling box (6) to receive the waste falling from the waste recycling opening.

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