Cutting knife type rapid marking device for pipes

Abstract

The utility model provides a pipe cutter type rapid scribing device. Comprising a base, a movable wheel, a fixed wheel, an elastic marking pin and a guiding rule, the base comprises a grip and a base body; a seat body is arranged at the front end of the base and is used for accommodating components of the device; a grip is arranged at the rear end of the base; the fixed wheel is assembled at the bottom of the seat body to lift and support the pipe; the movable wheel is assembled at the top of the seat body and is used for pressing the pipe and clamping and fixing the pipe; the movable wheels correspond to the fixed wheel, the center lines of the two movable wheels are collinear with the center line of the fixed wheel, and the movable wheels are in rolling contact with the pipe through lifting adjustment of the movable wheels to achieve centering clamping of the pipe. The guiding rule is arranged on the side portion of the base and used for calibrating the scribing distance of the pipe. The elastic scriber is assembled between the two movable wheels, and the center of the elastic scriber is collinear with the centers of the two movable wheels; the elastic marking pin penetrates through the top of the base body to extend downwards to make contact with the outer surface of the pipe, the elastic marking pin rotates around the pipe along with the base, a line track is left on the outer surface of the pipe, and pipe marking is achieved.

Description

Technical Field

[0001] This utility model relates to marking in the field of pipelines, and more particularly to a pipe cutter-type rapid marking device. Background Technology

[0002] Shipbuilding is a complex field involving the assembly and welding of various types of pipes. Some pipes require marking on their outer circumference before installation.

[0003] However, in the process of implementing the inventive technical solution in the embodiments of this application, the inventors of this application discovered that the above-mentioned technology has at least the following technical problems:

[0004] Currently, lathe clamping is commonly used for marking lines. Lathe construction requires professional operators and specialized equipment, resulting in low overall marking efficiency, high construction costs, and inflexible construction methods. Summary of the Invention

[0005] To address the shortcomings of existing technologies and the low efficiency of pipe marking, this application provides a pipe-cutting type rapid marking device. This device uses concentric movable and fixed wheels on a base to center and clamp the pipe. An elastic marking needle is positioned between the two movable wheels, rotating around the pipe, contacting it, and marking lines. Simultaneously, a straightedge is used for positioning, enabling rapid, batch marking and solving the technical problem of low pipe marking efficiency.

[0006] The solution adopted by the embodiments of this application to solve the technical problem is:

[0007] The pipe cutter type rapid marking device includes a base, movable wheels, fixed wheels, flexible marking needles, and a straightedge;

[0008] The base includes a handle and a seat. The seat is located at the front end of the base to house the components of the device. The handle is located at the rear end of the base for holding the device and rotating it around a pipe for marking operations. Fixed wheels are mounted at the bottom of the seat to support the pipe. Movable wheels are mounted at the top of the seat to press down on the pipe and clamp it securely. The movable wheels correspond to the fixed wheels, with their center lines collinear with the center lines of the fixed wheels. The movable wheels adjust their height to achieve rolling contact with the pipe, thus centering and clamping it. A straightedge is located on the side of the base to calibrate the marking distance on the pipe. A flexible marking needle is mounted between the two movable wheels, with its center collinear with the centers of the two movable wheels. The flexible marking needle extends downwards through the top of the seat, contacting the outer surface of the pipe. As the base rotates around the pipe, the flexible marking needle leaves a line track on the outer surface of the pipe, thus marking the pipe.

[0009] To further address the technical problems to be solved by the embodiments of this application, the elastic scribing needle provided in this embodiment...

[0010] The flexible scribing needle includes a needle base, end cap, spring, scribing needle, and limiting screw;

[0011] The scriber includes a needle shaft with a needle tip at the front end for scribes on the outer surface of the tube, and a needle handle at the rear end of the needle shaft. The needle holder is a hollow cylindrical shape, fitted with a scriber hole in the holder body. A conical cavity is provided in the lower part of its chamber, where the scriber is housed. The needle tip extends out to the conical cavity end of the needle holder, and the needle handle limits the scriber within the cavity of the needle holder. A spring is fitted into the cavity of the needle holder and presses against the needle handle to adjust the rebound force of the scriber in contact with the tube. An end cap is screwed to the needle holder, compresses the spring, and presses it against the needle handle to adjust the relative distance between the end cap and the needle holder. A limiting screw is screwed into the limiting hole of the holder body, enters the scriber hole, and presses against the needle holder to lock and fix the elastic scriber.

[0012] Positive effects: The technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0013] 1. Because the embodiments of this application adopt the technical means of setting fixed wheels at the bottom of the base and corresponding movable wheels at the top, the movable wheels and fixed wheels together clamp the tube and support the tube to rotate. The tube end is positioned by a straightedge, which effectively solves the technical problem of low efficiency of tube marking in the prior art. By adjusting the vertical distance of the movable wheels, the tube can be clamped. At the same time, the straightedge marks the marking distance, thereby realizing the technical effect of rapid batch marking of tubes.

[0014] 2. As this application embodiment adopts the technical means of setting an elastic scribing needle between two movable wheels, the elastic scribing needle passes through the top of the seat and contacts the outer surface of the tube, which effectively solves the technical problem of low tube scribing efficiency in the prior art. The elastic scribing needle moves relative to the tube along with the rotation of the base, and the tube is scribed by the elastic scribing needle, thereby achieving the technical effect of improving the tube scribing efficiency.

[0015] 3. Since the embodiments of this application adopt the technical means of adjusting the height of the movable wheel through the stud, the movable wheel and the fixed wheel cooperate to increase the working range, effectively solving the technical problem of low efficiency of pipe marking in the prior art. When the pipe diameter changes, the movable wheel can still be used, thereby achieving the technical effect of a larger pipe diameter range.

[0016] 4. Because the embodiments of this application adopt the technical means that both the movable wheel and the fixed wheel are V-shaped, the technical problem of low efficiency of pipe scribing in the prior art is effectively solved, the stability of the pipe during the rotation process is good, and thus the technical effect of improving scribing quality is achieved.

[0017] 5. Because the embodiments of this application employ a technique of incorporating a spring in the elastic scriber, the scriber height is adjustable, and the scribe depth can be adjusted, effectively solving the technical problem of low scriber efficiency in the prior art, and thus achieving the technical effect that the tip of the scriber has a telescopic range.

[0018] Suitable for use as a pipe cutter-type rapid marking device. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is the southeast isometric view of this embodiment;

[0021] Figure 2 This is a southeast isometric half-sectional view of this embodiment;

[0022] Figure 3 This is the southwest isometric view of this embodiment;

[0023] Figure 4 This is a half-section view of the southwest isometric view of this embodiment;

[0024] Figure 5 This is a half-sectional view of the isometric elastic scriber in the southwest region of this embodiment;

[0025] Figure 6 This is a half-sectional view of the isometric elastic scriber in the northwest of this embodiment;

[0026] Figure 7 This is a half-sectional view of the southwest isometric movable wheel in this embodiment;

[0027] Figure 8 This is a half-sectional view of the northwest isometric movable wheel in this embodiment;

[0028] Figure 9 This is the front view of this embodiment;

[0029] Figure 10 This is the front sectional view of this embodiment;

[0030] Figure 11 This is a top view of this embodiment;

[0031] Figure 12 This is a side view of this embodiment;

[0032] Figure 13 This is the southeast isometric view of the base;

[0033] Figure 14 This is the isometric view of the northwest side of the movable wheel;

[0034] Figure 15 This is the isometric view of the southeast side of the fixed wheel;

[0035] Figure 16 This is an isometric view of the southeast side of the straightedge.

[0036] In the picture:

[0037] 0. Pipe,

[0038] 1. Base,

[0039] 11. Grip,

[0040] 12. Base body,

[0041] 121. Groove,

[0042] 122. Axle hole,

[0043] 123. Scribing hole,

[0044] 124. Limiting hole,

[0045] 125. Stud hole,

[0046] 126. Screw hole,

[0047] 127. Arm post hole;

[0048] 2. Movable wheels,

[0049] 21. Stud,

[0050] 22. Connecting platform,

[0051] 23. V-type wheel set,

[0052] 24. Connecting screws;

[0053] 3. Fixed wheels,

[0054] 31. Wheel and axle

[0055] 32. Roller;

[0056] 4. Flexible scribing needle,

[0057] 41. Needle base,

[0058] 42. End cap,

[0059] 43. Spring,

[0060] 44. Strike a needle,

[0061] 45. Limiting screw;

[0062] 5. Straight ruler,

[0063] 51. Slotted plate,

[0064] 52. Arm column,

[0065] 53. Screw,

[0066] 54. Fastening screws. Detailed Implementation

[0067] 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. Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0068] This application embodiment provides a pipe cutting type rapid marking device, which solves the problem of low pipe marking efficiency in the prior art. The device uses movable wheels 2 and fixed wheels 3 to clamp the pipe 0 in the base 1, and an elastic marking needle 4 is provided between the two movable wheels 2 and positioned by a ruler 5 to achieve rapid batch marking.

[0069] According to the instruction manual Figure 1-12 As shown, the pipe cutter type rapid marking device includes a base 1, a movable wheel 2, a fixed wheel 3, an elastic marking needle 4, and a straightedge 5;

[0070] The base 1 is a one-piece structure, including a handle 11 and a seat 12; the seat 12 is provided at the front end of the base 1, and the seat 12 has a C-shaped structure for housing the components of the device; the handle 11 is provided at the rear end of the base 1 for holding the device to rotate around the tube 0 to perform line marking operations; in this embodiment, the handle 11 is a straight handle 11.

[0071] Fixed wheel 3 is mounted on the bottom of base 12 and is used to support tube 0;

[0072] The movable wheel 2 is mounted on the top of the base 12 and is used to press down the tube 0 and clamp and fix it. The movable wheel 2 and the fixed wheel 3 correspond to each other, and the center line of the two movable wheels 2 is collinear with the center line of the fixed wheel 3. By adjusting the lifting of the movable wheel 2, it rolls into contact with the tube 0 to achieve centering and clamping of the tube 0.

[0073] The straightedge 5 is set on the side of the base 1 to mark the scribing distance of the pipe 0, limit the pipe 0, form a scribing template, and realize batch operation;

[0074] The elastic scribing needle 4 is mounted between the two movable wheels 2, with its center collinear with the center of the two movable wheels 2. The elastic scribing needle 4 extends downward through the top of the base 12 and contacts the outer surface of the pipe 0. The elastic scribing needle 4 rotates around the pipe 0 along with the base 1, leaving a line track on the outer surface of the pipe 0, thereby realizing the scribing of the pipe 0. Therefore, it is not limited by the construction site conditions. As long as the device is put on the pipe 0, the outer surface of the pipe 0 can be scribing anytime and anywhere. Moreover, the structure is simple and easy to carry, which improves the work efficiency of scribing the pipe 0.

[0075] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:

[0076] Because the base 12 has a fixed wheel 3 at the bottom and a corresponding movable wheel 2 at the top, the movable wheel 2 and the fixed wheel 3 together clamp the tube 0 and support the tube 0 to rotate. The tube end is positioned by the straightedge 5. Therefore, by adjusting the vertical distance of the movable wheel 2, the tube 0 can be clamped. At the same time, the straightedge 5 marks the scribing distance, realizing the batch and rapid scribing of the tube 0.

[0077] Since an elastic scriber 4 is provided between the two movable wheels 2, the elastic scriber 4 passes through the top of the base 12 and contacts the outer surface of the tube 0. Therefore, the elastic scriber 4 moves relative to the tube 0 along with the rotation of the base 1, and the tube 0 is scribed by the elastic scriber 4.

[0078] To ensure the stability of the structure in this embodiment, please refer to the appendix to the specification. Figure 13 The seat 12 includes a groove 121, a wheel axle hole 122, a scriber hole 123, a limiting hole 124, a stud hole 125, a screw hole 126, and an arm post hole 127.

[0079] A groove 121 is provided at the bottom of the seat 12 for receiving the fixed wheel 3, and wheel axle holes 122 are provided on both sides of the groove 121 for assembling the fixed wheel 3.

[0080] A through-hole 123 is provided at the center of the top of the base 12 for mounting the elastic scriber 4. A limiting hole 124 is provided on the front top of the base 12, which is connected to the scriber hole 123 for locking and fixing the elastic scriber 4. Through-hole stud holes 125 are provided on both sides of the scriber hole 123 for mounting the movable wheel 2. The two stud holes 125 and the three holes of the scriber hole 123 are collinear. The scriber hole 123 is a through hole, and the stud holes 125 are internal threaded holes.

[0081] A screw hole 126 is provided on the side of the base body 12 for mounting the straightedge 5; an arm post hole 127 is provided at the bottom of the base body 12 for mounting the straightedge 5. The screw hole 126 is an internal thread hole, and the arm post hole 127 is a through hole.

[0082] To further ensure the stability of the structure in this embodiment, please refer to the appendix to the specification. Figure 14 The movable wheel 2 includes a stud 21, a connecting platform 22, a V-shaped wheel assembly 23, and a connecting screw 24;

[0083] V-shaped wheel set 23 consists of 32 sets of V-shaped rollers used to roll the pressing tube 0; a connecting hole is provided on the upper part of the V-shaped wheel set 23;

[0084] The stud 21 is an externally threaded shaft that is screwed into the stud hole 125 of the seat 12. The movable wheel 2 is assembled on the seat 12. The height of the movable wheel 2 is adjusted by screwing the stud 21 into the stud hole 125, thereby pressing the tube 0 from top to bottom.

[0085] A connecting platform 22 is provided at the lower part of the stud 21. The connecting platform 22 is inserted into the connecting hole of the V-shaped wheel set 23 and locked in place by the connecting screw 24.

[0086] In this embodiment, the V-shaped wheel set 23 is a three-wheel structure, symmetrically arranged on both sides of the elastic scriber 4.

[0087] To optimize the structure of this embodiment, please refer to the appendix to the specification. Figure 15 The fixed wheel 3 is a set of 32 V-shaped rollers, including axle 31 and rollers 32;

[0088] The two ends of the axle 31 are fitted onto the axle holes 122 in the groove 121, and rollers 32 are arranged on the axle 31 to make rolling contact with the tube 0.

[0089] In this embodiment, there are three sets of fixed wheels 3.

[0090] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:

[0091] Since the height of the movable wheel 2 can be adjusted by the stud 21, the movable wheel 2, in conjunction with the fixed wheel 3, can increase the working range. When the diameter of the pipe 0 changes, the movable wheel 2 can still be used, and it can adapt to a wider range of pipe 0 diameters.

[0092] Since both the movable wheel 2 and the fixed wheel 3 have a V-shaped structure, the stability of the tube 0 during rotation is achieved, thus improving the quality and effect of the scribing.

[0093] To further optimize the structure of this embodiment, please refer to the appendix to the specification. Figure 16 The straightedge 5 includes a groove plate 51, an arm column 52, a screw rod 53, and a fastening screw 54;

[0094] The groove plate 51 is a long strip plate used to block the end of the pipe 0 and mark the position of the scribed line on the pipe 0; a through groove is provided on the groove plate 51;

[0095] The arm post 52 is a component that supports the ruler 5, passes through the arm post hole 127, and is connected to the groove plate 51 at the end of the arm post 52.

[0096] The fastening screw 54 is disposed in the through groove of the slot plate 51;

[0097] The screw 53 passes through the screw hole 126, and the slot plate 51 is connected to the screw 53 by the fastening screw 54;

[0098] The screw 53 is screwed into the screw hole 126. One end of the groove plate 51 slides in the arm post hole 127 through the arm post 52, and the other end adjusts the distance between the groove plate 51 and the elastic scribe 4 through the screw 53, blocking the end face of the tube 0, thereby marking the position of the scribe line on the tube 0.

[0099] In this embodiment, dimension lines are engraved on the arm column 52 to mark the scribed positions of the tube 0.

[0100] To further optimize the structure of this embodiment, please refer to the appendix to the specification. Figure 5 , 6 10. The elastic scribing needle 4 includes a needle base 41, an end cap 42, a spring 43, a scribing needle 44, and a limiting screw 45;

[0101] The scribing needle 44 includes a needle bar, a needle tip at the front end of the needle bar for scribing lines on the outer surface of the tube 0, and a needle handle at the rear end of the needle bar.

[0102] The needle holder 41 is a hollow cylindrical shape and is fitted with the scribe hole 123 of the seat body 12. A conical cavity is provided in the lower part of its cavity, and the scribe needle 44 is stored in the cavity. The needle tip extends out to the conical cavity end of the needle holder 41, and the needle handle limits the scribe needle 44 in the cavity of the needle holder 41.

[0103] Spring 43 is fitted into the cavity of needle holder 41 and presses against needle handle to adjust the rebound force of the scribe needle 44 when it contacts tube 0;

[0104] The end cap 42 is screwed to the needle seat 41, and the compressed spring 43 is pressed against the needle handle. The relative distance between the end cap 42 and the needle seat 41 is adjusted, thereby adjusting the tension of the spring 43, which in turn adjusts the insertion depth of the scribing needle 44 and controls the depth of the scribing.

[0105] The limiting screw 45 is screwed into the limiting hole 124 of the seat body 12, enters the scribe hole 123, and then abuts against the needle seat 41 to lock and fix the elastic scribe 4.

[0106] As a standard technique, the tip of the 44 scriber is usually made of high-quality alloy steel, which has high hardness, good wear resistance, and corrosion resistance. After fine grinding, the hardness can reach HRC60-62, ensuring that the 44 scriber can leave clear lines on the surface of materials such as metal and plastic.

[0107] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:

[0108] Since the elastic scribing needle 4 is installed at the upper end of the base 1, the scribing needle 44 moves relative to the tube 0 as the base 1 rotates, thereby achieving the scribing effect.

[0109] Because a spring 43 is provided in the elastic stylus 4, the height of the stylus 44 is adjustable, which can adjust the depth of the stylus. The spring 43 inside the elastic stylus 4 ensures that the tip of the stylus 44 has a certain amount of extension and retraction.

[0110] The working process of this embodiment:

[0111] First, pass tube 0 through the middle of the movable wheel 2 and the fixed wheel 3;

[0112] Secondly, adjust the ruler to position 5 to fix the marking distance;

[0113] Finally, tighten the movable wheel 2 and press the tube 0 firmly. The tip of the scribing needle 44 touches the tube 0. Rotate the handle 11 to make the scribing needle 44 move relative to the tube 0 to complete the scribing.

[0114] It is worth noting that all the contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of the fixed wheel 3, V-shaped wheel set 23, scriber 44, and spring 43 are not specifically limited and can be determined using conventional equipment. Electrical control components not mentioned in this technical solution are not shown in the figure because they are existing technologies, and will not be described here.

[0115] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pipe cutter-type rapid marking device, characterized in that: include: The base (1) includes a handle (11) and a seat (12); The base (12) is provided at the front end of the base (1) for housing the components of the marking device; the handle (11) is provided at the rear end of the base (1) for holding the marking device to rotate around the tube (0) to perform marking operations. Fixed wheel (3), the fixed wheel (3) is assembled at the bottom of the seat (12) for supporting the tube (0); The movable wheel (2) is mounted on the top of the seat (12) and is used to press down the tube (0) and clamp and fix it. The movable wheel (2) corresponds to the fixed wheel (3). The center line of the two movable wheels (2) is collinear with the center line of the fixed wheel (3). By adjusting the lifting of the movable wheel (2), it rolls into contact with the tube (0) to achieve centering and clamping of the tube (0). A straightedge (5), which is disposed on the side of the base (1), is used to mark the scribing distance of the tube (0); and The elastic scriber (4) is mounted between the two movable wheels (2), and its center is collinear with the center of the two movable wheels (2). The elastic scriber (4) extends downward through the top of the base (12) and contacts the outer surface of the tube (0). The elastic scriber (4) rotates around the tube (0) along with the base (1) and leaves a line track on the outer surface of the tube (0) to achieve the scribing of the tube (0).

2. The pipe cutter-type rapid marking device according to claim 1, characterized in that: The seat (12) includes a groove (121), a wheel axle hole (122), a scriber hole (123), a limiting hole (124), a stud hole (125), a screw hole (126), and an arm post hole (127). The bottom of the seat (12) is provided with the groove (121) for receiving the fixed wheel (3), and the wheel axle holes (122) are provided on both sides of the groove (121) for assembling the fixed wheel (3). A through-hole (123) is provided at the top center of the base (12) for assembling the elastic scriber (4). A limiting hole (124) is provided on the top front of the base (12), which is connected to the scriber hole (123) for locking and fixing the elastic scriber (4). Through-hole stud holes (125) are provided on both sides of the scriber hole (123) for assembling the movable wheel (2). The two stud holes (125) are collinear with the three holes of the scriber hole (123). The scriber hole (123) is a through hole, and the stud hole (125) is an internal thread hole. The screw hole (126) is provided on the side of the base (12) for mounting the straightedge (5); the arm post hole (127) is provided at the bottom of the base (12) for mounting the straightedge (5), wherein the screw hole (126) is an internal thread hole and the arm post hole (127) is a through hole.

3. The pipe cutter-type rapid marking device according to claim 2, characterized in that: The movable wheel (2) includes a stud (21), a connecting platform (22), a V-shaped wheel assembly (23), and a connecting screw (24). The V-shaped wheel assembly (23) is a V-shaped roller assembly used to roll and press down the tube (0); a connecting hole is provided on the upper part of the V-shaped wheel assembly (23); The stud (21) is an external threaded shaft, which is screwed into the stud hole (125) of the seat (12). The movable wheel (2) is assembled on the seat (12). The height of the movable wheel (2) is adjusted by screwing the stud (21) into the stud hole (125), thereby pressing the tube (0) from top to bottom. A connecting platform (22) is provided at the lower part of the stud (21). The connecting platform (22) is inserted into the connecting hole of the V-shaped wheel assembly (23) and locked in place by the connecting screw (24).

4. The pipe cutter-type rapid marking device according to claim 2, characterized in that: The fixed wheel (3) is a V-shaped roller assembly, including axle (31) and roller (32). The two ends of the axle (31) are fitted onto the axle holes (122) in the groove (121), and the rollers (32) are arranged on the axle (31) and make rolling contact with the tube (0).

5. The pipe cutter-type rapid marking device according to claim 2, characterized in that: The straightedge (5) includes: The groove plate (51) is a long strip plate used to block the end of the pipe (0) and mark the position of the line drawn on the pipe (0); a through groove is provided on the groove plate (51); Arm post (52), the arm post (52) is a component that supports the straightedge (5), passes through the arm post hole (127), and is connected to the groove plate (51) at the end of the arm post (52); Fastening screws (54) are disposed in a through slot of the slot plate (51); and A screw (53) passes through the screw hole (126) and the slot plate (51) is connected to the screw (53) by the fastening screw (54); The screw (53) is screwed to the screw hole (126), one end of the groove plate (51) slides in the arm post hole (127) through the arm post (52), and the other end adjusts the distance between the groove plate (51) and the elastic scribe (4) through the screw (53).

6. The pipe cutter-type rapid marking device according to claim 2, characterized in that: The elastic scriber (4) includes: The scriber (44) includes a needle bar, a needle tip at the front end of the needle bar for scribing lines on the outer surface of the tube (0), and a needle handle at the rear end of the needle bar. The needle holder (41) is a hollow cylindrical shape and is fitted to the scribe hole (123) of the seat body (12). A conical cavity is provided in the lower part of its cavity, and the scribe (44) is housed in the cavity. The needle tip extends out to the conical end of the needle holder (41), and the needle handle limits the scribe (44) in the cavity of the needle holder (41). A spring (43) is fitted into the cavity of the needle holder (41) and pressed against the needle handle to adjust the rebound force of the scribe needle (44) in contact with the tube (0); End cap (42), which is screwed to the needle seat (41), compresses the spring (43) and presses it against the needle shank, and adjusts the relative distance between the end cap (42) and the needle seat (41); and The limiting screw (45) is screwed into the limiting hole (124) of the seat (12), enters the scribe hole (123) and abuts against the needle seat (41) to lock and fix the elastic scribe (4).

7. The pipe cutter-type rapid marking device according to claim 6, characterized in that: The tip of the scriber (44) is made of high-quality alloy steel.

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