Blade assembly for cutting trace of peeling layer at port of coating pipe

Abstract

The utility model relates to the technical field of cutters, and discloses a blade assembly for cutting traces of a peeling layer at a port of a coated pipe, which comprises a cutter rest shaft, a chuck is fixedly mounted on the cutter rest shaft through a fixing bolt, and a combined blade is mounted in the chuck. Through the arrangement of the limiting pin, when the protection block drives the trace blade to be separated from the limiting block and the trace blade generates a relative rotation state, on one hand, the protection block and the pipeline can synchronously rotate and do not generate a relative sliding phenomenon, so that the phenomenon that the surface of the pipeline is heated to deform and melt due to friction between the protection block and the pipeline can be avoided; on the other hand, when the torsion spring accumulates force, the limiting pin enters the first guide rail from the second guide rail, so that the limiting pin and the protection block are prevented from being clamped and can rotate relatively, and due to the elasticity effect, the limiting pin knocks the inner wall of the protection block through elasticity every time the limiting pin passes through the first guide rail, sound is generated, and a user can be reminded that trace cutting is completed; and excessive cutting is avoided.

Description

Technical Field

[0001] This utility model relates to the field of cutting tool technology, specifically to a blade assembly for cutting traces of peeling layer at the end of a coated tube. Background Technology

[0002] Plastic pipes are easily scratched during construction, especially when repairing or inserting other pipes, posing a significant safety hazard to pipe operation. To avoid damage from scratches, a new type of coated pipe is used in trenchless construction. This coated pipe has an inner working pipe and an outer protective layer. The inner working pipe mainly transports pressurized media such as natural gas or water, while the outer protective layer primarily protects it. During construction, the outer protective layer needs to be peeled off from the pipe body before the inner working pipe is welded together. To ensure quick and efficient peeling and facilitate construction, peeling marks are pre-made on the coated pipe before it leaves the factory, allowing for easy removal of the protective layer from the welding areas during construction.

[0003] Currently, there is a lack of equipment for cutting pipe marks. When cutting marks, additional procedures are required, which greatly reduces work efficiency. Moreover, in order to control the depth of the marks, the tools used in this process are small, with a diameter only slightly larger than the chuck. During the cutting process, the chuck will generate relative friction with the pipe, which will cause rapid heating and melt and deform the surface of the pipe. Utility Model Content

[0004] To address the aforementioned problems in the prior art, this utility model provides a blade assembly for cutting peeling marks on the end of a coated pipe, which has the advantage of simultaneously cutting marks and severing the pipe.

[0005] To achieve the aforementioned goal of simultaneously cutting marks and severing pipes, this utility model provides the following technical solution: it includes a tool holder shaft, on which a chuck is fixedly mounted by fixing bolts, and a combination blade is installed inside the chuck;

[0006] The combined blade includes a cutting blade and a marking blade, wherein at least two marking blades are provided and are symmetrically arranged with the cutting blade as the center;

[0007] The marking tool includes a marking blade, a protective block, and a bolt block. The bolt block is fixed to the inner wall of the chuck, the protective block is fitted onto the bolt block, and the marking blade is rotatably connected to the protective block.

[0008] Preferably, the protective block has a notch inside, a torsion spring is installed in the notch, a limiting pin is fixed to one end of the torsion spring, and a limiting ring is fixed to the other end of the torsion spring.

[0009] Preferably, the inner wall of the notch of the protective block is further provided with a first guide rail and a second guide rail. The first guide rail is arranged in a ring. At least two second guide rails are arranged along the radial direction of the protective block and are connected to the first guide rail. The limiting pin is located inside the second guide rail. The inner wall of the limiting ring is also provided with at least two sliding rods.

[0010] Preferably, the outer periphery of the bolt block is provided with threads, the protective block is threadedly connected to the bolt block, and at least two limiting holes are also provided in the bolt block, with the sliding rod located in the limiting holes.

[0011] Preferably, both the protective block and the tracer blade are above the surface of the chuck, wherein the surface of the tracer blade is above the surface of the protective block.

[0012] Preferably, the diameter of the marking blade is larger than the diameter of the protective block by 0.-0. mm, and the marking blade is provided in a set.

[0013] Preferably, a limiting groove is formed on one end face of the marking blade, and the limiting groove is square.

[0014] Preferably, at least two tool grooves are provided on the outer periphery of the chuck, the marking tool is installed in the tool groove, and a square limiting block is fixed on the inner wall of the tool groove, the limiting groove and the limiting block cooperate.

[0015] Preferably, it also includes two pipes, on which at least two grooves are provided.

[0016] Compared with the prior art, the present invention provides a blade assembly for cutting peeling layer marks at the end of a coated tube, which has the following advantages:

[0017] 1. The blade assembly for cutting the peeling layer marks at the port of the coated pipe, through the combination of blades, can directly cut the pipe while also cutting the marks, effectively increasing the processing efficiency of the pipe.

[0018] 2. The blade assembly for cutting the peeling layer marks at the end of the coated pipe, through the setting of the limiting pin, allows the marking blade to be disengaged from the limiting block by the protective block, causing the marking blade to rotate relative to the pipe. At this time, on the one hand, the protective block and the pipe can rotate synchronously, and the two will not slide relative to each other, thus avoiding friction between the two, which could lead to heat deformation and melting of the pipe surface. On the other hand, when the torsion spring is charged, the limiting pin can move from the second guide rail into the first guide rail, thus preventing the limiting pin from jamming with the protective block and allowing the two to rotate relative to each other. Moreover, due to the elastic effect, the limiting pin will elastically strike the inner wall of the protective block every time it passes the first guide rail, producing a sound, which can remind the user that the marking cutting is complete and avoid over-cutting. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0020] Figure 2 This is a three-dimensional structural diagram of the main tool holder of this utility model;

[0021] Figure 3 This is a schematic diagram of the half-section structure of the main tool holder of this utility model;

[0022] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0023] Figure 5 This is an exploded structural diagram of the marking tool of this utility model;

[0024] Figure 6 This is a schematic diagram of the internal structure of the marking tool of this utility model;

[0025] Figure 7 This is a schematic diagram of the internal structure of the clamping disc of this utility model.

[0026] In the diagram: 10, tool holder shaft; 11, fixing bolt; 20, chuck; 201, tool groove; 202, limiting block; 21, cutting tool; 30, marking tool; 301, marking blade; 3011, limiting groove; 302, protective block; 3021, first guide rail; 3022, second guide rail; 303, bolt block; 3031, limiting hole; 304, torsion spring; 305, limiting pin; 306, limiting ring; 307, slide bar; 40, pipe; 41, marking groove. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figure 1-7As shown, the device includes a tool holder shaft 10, characterized in that: a chuck 20 is fixedly installed on the tool holder shaft 10 by fixing bolts 11, and a combination blade is installed in the chuck 20. The combination blade includes a cutting tool 21 and a marking tool 30. At least two marking tools 30 are provided and are symmetrically arranged with the cutting tool 21 as the center. The diameter of the cutting tool 21 is much larger than the diameter of the marking tool 30. At least two tool grooves 201 are opened on the outer peripheral side of the chuck 20. The marking tool 30 is installed in the tool groove 201. A square limiting block 202 is also fixed on the inner wall of the tool groove 201. The limiting groove 3011 cooperates with the limiting block 202.

[0029] The tracer tool 30 includes a tracer blade 301, a protective block 302, and a bolt block 303. The bolt block 303 is fixed to the inner wall of the chuck 20, and the protective block 302 is fitted onto the bolt block 303. The tracer blade 301 is rotatably connected to the protective block 302. A limiting groove 3011 is formed on one end face of the tracer blade 301. The limiting groove 3011 is square. Through the square shape, the tracer blade 301 can be effectively fixed to the chuck 20 by the limiting block 202. A notch is formed inside the protective block 302, and a torsion spring 304 is installed in the notch. The torsion spring 304 is elastic and can provide a force storage function. A limiting pin 305 is fixed to one end of the torsion spring 304, and a limiting ring 306 is fixed to the other end. A first guide rail 3021 and a second guide rail 3022 are also formed on the inner wall of the notch of the protective block 302. The first guide rail 3021 is... The ring is arranged in a ring. At least two second guide rails 3022 are arranged along the radial direction of the protective block 302 and are connected to the first guide rail 3021. The limiting pin 305 is located inside the second guide rail 3022. The inner wall of the limiting ring 306 is also provided with at least two slide rods 307. The outer periphery of the bolt block 303 is provided with threads. The number of thread turns is relatively small, 1-2 turns. The protective block 302 is corresponding to it. The number of threads is sufficient to allow the protective block 302 to move and drive the tracer blade 301 to disengage from the limiting block 202. The protective block 302 is threadedly connected to the bolt block 303. At least two limiting holes 3031 are also opened in the bolt block 303. The slide rods 307 are located in the limiting holes 3031, so that the limiting ring 306 will not rotate relative to the bolt block 303. Therefore, when the protective block 302 rotates, the limiting ring 306 will not rotate, thereby storing force on the torsion spring 304.

[0030] Furthermore, by setting the limiting pin 305, the protective block 302 can drive the tracer blade 301 to disengage from the limiting block 202, causing the tracer blade 301 to rotate relative to the pipe. At this time, on the one hand, the protective block 302 and the pipe can rotate synchronously without relative sliding, thus avoiding friction between the two and preventing the pipe surface from being deformed and melted by heat. On the other hand, when the torsion spring 304 is charged, the limiting pin 305 can enter the first guide rail 3021 from the second guide rail 3022, thus preventing the limiting pin 305 from jamming with the protective block 302 and allowing them to rotate relative to each other. Moreover, due to the elastic effect, the limiting pin 305 will strike the inner wall of the protective block 302 every time it passes the first guide rail 3021, producing a sound, which can remind the user that the trace cutting is complete and avoid over-cutting.

[0031] Both the protective block 302 and the tracer blade 301 are higher than the surface of the chuck 20. The surface of the tracer blade 301 is higher than the surface of the protective block 302. The diameter of the tracer blade 301 is 1.6-2.0 mm larger than the diameter of the protective block 302. This can prevent the pipe from contacting the chuck 20. When the pipe contacts the protective block 302, the protective block 302 will rotate, thus avoiding relative friction. There are 2-8 sets of tracer blades 30.

[0032] It also includes two pipes 40, each with at least two trace grooves 41, which correspond to the trace tool 30.

[0033] Working principle: When in use, the pipe 40 can be clamped and rotated on the equipment, and then the tool holder shaft 10 is controlled to approach the pipe 40. At this time, the cutting tool 21 can cut the pipe 40, while the marking tool 30 can mark the pipe 40.

[0034] During the trace cutting process, the protective block 302 abuts against the trace cutting blade 301, causing it to cooperate with the limiting block 202 to restrict and fix the trace cutting blade 301. Then, it contacts the surface of the pipe 40 to make the cut. After the trace cutting is completed, the pipe 40 will contact the protective block 302. Through the friction between the pipe and the protective block 302, the protective block 302 will rotate. This rotation, via its threads, will move the trace cutting blade 301 away from the limiting block 202 until the trace cutting blade 301 disengages from the limiting block 202. At this point, the trace cutting blade 301 and the protective block 202 are separated. The block 302 rotates relative to the pipe 40 without mutual friction. During the rotation of the protective block 302, the torsion spring 304 is compressed and stored through the limiting pin 305. At this time, the limiting pin 305 gradually moves along the second guide rail 3022 into the first guide rail 3021, so that the limiting pin 305 slides in the first guide rail 3021. At this time, the torsion spring 304 is in a stored state, and the limiting pin 305 will have a tendency to rebound. When the protective block 302 rotates and the limiting pin 305 aligns with the second guide rail 3022, the elastic limiting pin 305 can strike the inner wall of the protective block 302, producing a sound.

[0035] After cutting is completed, the tool holder shaft 10 is withdrawn. Through the storage of the torsion spring 304, the limiting pin 305 re-enters the second guide rail 3022. Then, the second guide rail 3022 pushes the protective block 302 to rotate in the opposite direction, which in turn drives the protective block 302 to push the trace blade 301 to move in the opposite direction closer to the limit block 202 until it engages with the limit block 202, and then the next cutting can continue.

[0036] If the limiting block 202 and the limiting groove 3011 do not fully engage in the above process, the cutting blade 301 will be rotated first during the next cutting process until the cutting blade 301 is embedded in the limiting block 202 before the cutting can be performed, and then the above process will be repeated.

[0037] In summary, this blade assembly for cutting the peeling layer marks at the pipe port, through the combination of blades, can directly cut the pipe while simultaneously cutting the marks, effectively increasing the pipe processing efficiency. The limiting pin 305 allows the protective block 302 to drive the marking blade 301 away from the limiting block 202, causing the marking blade 301 to rotate relative to the pipe. This ensures that the protective block 302 and the pipe rotate synchronously, preventing relative sliding and thus avoiding friction that could lead to heat deformation and melting of the pipe surface. Furthermore, when the torsion spring 304 is charged, the limiting pin 305 moves from the second guide rail 3022 into the first guide rail 3021, preventing the limiting pin 305 from jamming with the protective block 302 and allowing them to rotate relative to each other. Due to its elasticity, the limiting pin 305 strikes the inner wall of the protective block 302 each time it passes the first guide rail 3021, producing a sound that alerts the user that the marking cut is complete, preventing over-cutting.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A blade assembly for cutting peeling layer marks at the port of a coated tube, comprising a blade holder shaft (10), characterized in that: A chuck (20) is fixedly installed on the tool holder shaft (10) by a fixing bolt (11), and a combination blade is installed inside the chuck (20); The combined blade includes a cutting blade (21) and a marking blade (30), wherein at least two marking blades (30) are provided and are arranged symmetrically with respect to the cutting blade (21); The tracer tool (30) includes a tracer blade (301), a protective block (302), and a bolt block (303). The bolt block (303) is fixed on the inner wall of the chuck (20), and the protective block (302) is fitted onto the bolt block (303). The tracer blade (301) is rotatably connected to the protective block (302).

2. The blade assembly for cutting peeling marks at the end of a coated tube according to claim 1, characterized in that: The protective block (302) has a notch inside, and a torsion spring (304) is installed in the notch. A limiting pin (305) is fixed to one end of the torsion spring (304), and a limiting ring (306) is fixed to the other end.

3. The blade assembly for cutting peeling layer marks at the end of a coated tube according to claim 2, characterized in that: The inner wall of the notch of the protective block (302) is also provided with a first guide rail (3021) and a second guide rail (3022). The first guide rail (3021) is arranged in a ring. At least two second guide rails (3022) are arranged along the radial direction of the protective block (302) and are connected to the first guide rail (3021). The limiting pin (305) is located inside the second guide rail (3022). The inner wall of the limiting ring (306) is also provided with at least two slide rods (307).

4. The blade assembly for cutting peeling layer marks at the end of a coated tube according to claim 3, characterized in that: The outer periphery of the bolt block (303) is provided with threads, the protective block (302) is threadedly connected to the bolt block (303), and at least two limiting holes (3031) are also provided in the bolt block (303), and the slide rod (307) is located in the limiting holes (3031).

5. The blade assembly for cutting peeling layer marks at the end of a coated tube according to claim 1, characterized in that: The protective block (302) and the tracer blade (301) are both above the surface of the chuck (20), wherein the surface of the tracer blade (301) is above the surface of the protective block (302).

6. The blade assembly for cutting peeling layer marks at the end of a coated tube according to claim 5, characterized in that: The diameter of the tracer blade (301) is 1.6-2.0 mm larger than the diameter of the protective block (302), and the tracer blade (30) is provided in 2-8 sets.

7. The blade assembly for cutting peeling layer marks at the end of a coated tube according to claim 1, characterized in that: A limiting groove (3011) is provided on one end face of the tracer blade (301), and the limiting groove (3011) is square.

8. The blade assembly for cutting peeling layer marks at the end of a coated tube according to claim 7, characterized in that: At least two cutting grooves (201) are provided on the outer periphery of the chuck (20), the marking tool (30) is installed in the cutting groove (201), and a square limiting block (202) is fixed on the inner wall of the cutting groove (201). The limiting groove (3011) cooperates with the limiting block (202).

9. The blade assembly for cutting peeling layer marks at the end of a coated tube according to claim 1, characterized in that: It also includes two pipes (40), on which at least two trace grooves (41) are provided.

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