Portable pipe marking device

Abstract

The utility model provides a portable pipe marking device. Comprising a shell, a sealing cover, a thrust ball bearing, a press-in type ball head plunger and an elastic marking pin. Thrust ball bearing matching is conducted according to the parameters of the pipe, and the end face of the thrust ball bearing is in pressing contact with the end face of the pipe; the shell is used for containing the thrust ball bearing, the inner diameter of the shell is matched according to the outer diameter parameter of a pipe, the pipe is inserted into one end of the shell, and the end face of the pipe and the end face of the thrust ball bearing make contact and can rotate relatively. The sealing cover is arranged at the other end of the shell and is used for assembling the thrust ball bearing in the shell, so that the thrust ball bearing and the shell are concentric; the press-in type ball head plungers are arranged on the shell in a circular ring array mode, penetrate through the shell wall of the shell and extend inwards to clamp and limit a pipe, and the center of the pipe and the center of the shell are collinear; the elastic scriber is assembled in the radial direction of the shell and provided with a scriber body, the elastic scriber body penetrates through the shell wall of the shell and extends inwards, the scriber body on the elastic scriber body makes contact with the outer wall of the pipe, and a scriber tip of the scriber body conducts scribing on the outer wall of the pipe.

Description

Technical Field

[0001] This utility model relates to marking in the field of pipelines, and in particular to a portable pipe 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 problem of pipe marking on construction sites, this application provides a portable pipe marking device. This device uses a press-fit ball plunger to center and clamp the pipe, while an elastic marking needle mounted on the housing rotates around the pipe, contacting the outer wall of the pipe and marking lines, thus solving the technical problem of marking pipes on-site.

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

[0007] The portable tube scribing device includes a housing, a cap, a thrust ball bearing, a press-fit ball plunger, and a flexible scribing needle;

[0008] The thrust ball bearing is used to bear the axial load of the tube it contacts. It is matched according to the parameters of the tube, and the end face of the thrust ball bearing is in press contact with the end face of the tube. The housing is used to house the thrust ball bearing. The inner diameter of the housing is adapted according to the outer diameter parameters of the tube. The tube is inserted into one end of the housing, and the end face of the tube contacts the end face of the thrust ball bearing and can rotate relative to it. The cap is set at the other end of the housing and is used to assemble the thrust ball bearing in the housing so that the thrust ball bearing and the housing are concentric. The press-fit ball plunger annular array is on the housing, extending inward through the housing wall to clamp and limit the tube, and the center of the tube is collinear with the center of the housing. The elastic scriber is assembled radially on the housing and has a scriber. The elastic scriber extends inward through the housing wall, and the scriber on it contacts the outer wall of the tube, and the scriber scribing lines on the outer wall of the tube.

[0009] To further address the technical problems to be solved in the embodiments of this application, the cover provided in the embodiments of this application is disc-shaped, the cover is detachably connected to the housing, and the centers of the cover and the housing converge on a central axis for assembling the thrust ball bearing at the end of the housing; a protruding drive shaft is provided on the outside of the cover, and a hexagonal hole is provided inside the drive shaft for connecting a tool to drive the device to rotate around the tube.

[0010] Furthermore, the shell has a hollow structure, with a bearing hole for embedding a thrust ball bearing at one end and a tube hole for receiving a tube at the other end. The inner diameter of the thrust ball bearing is smaller than the diameter of the tube, allowing the tube end face to contact the thrust ball bearing end face and ensuring that the thrust ball bearing is fixed in the bearing hole of the shell, allowing it to rotate within the bearing hole. A ring of plunger holes is arranged on the shell wall for mounting press-fit ball plungers to clamp the tube and ensure concentricity between the tube and the shell. A scribing hole is also provided on the shell wall for mounting a flexible scribing needle for tube scribing operations.

[0011] Furthermore, the plunger holes are distributed at equal angles along the circumference of the shell, and the number of plunger holes is at least three rows, so that the tube is centered and concentric with the center line of the shell.

[0012] Furthermore, the shell wall has scribe holes for assembling flexible scribes, and the required flexible scribe is selected according to the scribe position of the tube.

[0013] Furthermore, the press-fit ball plunger includes a cylinder, an outer sleeve, a compression spring, and a ball head; an outer sleeve 420 is fitted onto the cylinder 410, a compression spring 430 is provided inside the outer sleeve 420, and a ball head 440 is provided on the outside of the compression spring 430 for point contact limiting the tube 600; the press-fit ball plunger 400 is assembled in the plunger hole 130, the cylinder 410 is concentric with the center line of the plunger hole 130, and the bottom end face of the cylinder 410 is tangent to the outer surface of the housing 100.

[0014] Furthermore, the flexible scribing needle includes a needle base, a scribing needle, an end cap, and a spring;

[0015] The scriber includes a needle shaft with a needle tip at the front end for scribes on the outer wall of the tube, and a needle handle at the rear end of the needle shaft. The needle holder is a hollow cylindrical shape, fitted into the scriber hole of the housing, with a conical cavity in the lower part of its chamber. The scriber is housed in the cavity, with the needle tip extending out to the conical end of the needle holder. The needle handle confines 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.

[0016] Positive effects: The technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0017] 1. Since the embodiments of this application adopt the technical means of setting a press-in ball head plunger on the shell, the press-in ball head plunger of the circular array centers and clamps the tube, effectively solving the technical problem of tube marking in the prior art, and thus achieving the technical effect of ensuring that the center of the tube and the center of the shell are collinear.

[0018] 2. Because the embodiments of this application adopt the technical means of setting a thrust ball bearing at one end of the shell, the end face of the tube is pressed and contacted with the end face of the thrust ball bearing, which effectively solves the technical problem of tube scribing in the prior art. The distance between the elastic scribing needle and the end face of the thrust ball bearing is the position dimension of the tube scribing, thereby realizing the technical effect of mass tube scribing.

[0019] 3. Because the embodiments of this application adopt the technical means of setting a drive shaft on the outside of the cap and setting a hexagonal hole inside the drive shaft, the connecting tool drives the device to rotate around the tube, which effectively solves the technical problem of tube marking in the prior art. When the device rotates, the tube is stationary to avoid repeated clamping of the tube, thereby achieving the technical effect of improving the efficiency of tube marking work.

[0020] 4. Since the embodiments of this application adopt the technical means of setting scribe holes on the shell and assembling elastic scribes, the distance between the center of the scribe and the end face of the thrust ball bearing is the position dimension of the pipe scribe, which effectively solves the technical problem of pipe scribe in the prior art, and thus achieves the technical effect of batch rapid scribe.

[0021] 5. As this application embodiment adopts the technical means of sequentially inserting the scriber, spring, and end cap into the needle holder and sealing it by screwing the end cap, the tightness of the spring can be adjusted by rotating the end cap, which effectively solves the technical problem of tube scribing in the prior art, and thus achieves the technical effect of adjusting the insertion depth of the scriber and the rebound force after contact with the tube.

[0022] Suitable for use as a portable pipe marking device. Attached Figure Description

[0023] 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.

[0024] Figure 1 This is the southeast isometric view of this embodiment;

[0025] Figure 2 This is the southeast isometric sectional view of this embodiment;

[0026] Figure 3 This is the southwest isometric view of this embodiment;

[0027] Figure 4 This is the southwest isometric sectional view of this embodiment;

[0028] Figure 5 This is the front view of this embodiment;

[0029] Figure 6 This is a front sectional view of this embodiment;

[0030] Figure 7 This is an exploded view of the structure in this embodiment;

[0031] Figure 8 To cover the southeast isometric view;

[0032] Figure 9 To cover the southwest isometric view;

[0033] Figure 10 This is the southeast isometric view of the shell.

[0034] Figure 11 This is the southwest isometric view of the shell.

[0035] Figure 12 Southeast isometric view of a press-fit ball head plunger;

[0036] Figure 13 Southwest isometric view of a press-fit ball-head plunger;

[0037] Figure 14 This is the southeast isometric view of the flexible scribing needle;

[0038] Figure 15 This is an isometric sectional view of the southeast section of the flexible scriber.

[0039] In the picture:

[0040] 100. Shell,

[0041] 110. Pipe hole,

[0042] 120. Bearing bore

[0043] 130. Piston hole,

[0044] 140. Scribing hole,

[0045] 200. Capping,

[0046] 210. Drive shaft,

[0047] 211. Hexagonal hole,

[0048] 300. Thrust ball bearing,

[0049] 400. Press-fit ball plunger,

[0050] 410. Cylinder

[0051] 420. Coat

[0052] 430. Compression spring,

[0053] 440. Ball head,

[0054] 500. Flexible scribing needle,

[0055] 510. Needle base,

[0056] 520. Strike a needle.

[0057] 530. End cap,

[0058] 540. Spring,

[0059] 600. Pipe. Detailed Implementation

[0060] 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.

[0061] As shown in the figure, the portable tube marking device includes a housing 100, a cap 200, a thrust ball bearing 300, a press-fit ball plunger 400, and an elastic marking needle 500.

[0062] The thrust ball bearing 300 is used to bear the axial load of the tube 600 in contact with it. The thrust ball bearing 300 is matched according to the parameters of the tube 600, and the end face of the thrust ball bearing 300 is in press contact with the end face of the tube 600.

[0063] The housing 100 is used to house the thrust ball bearing 300. The inner diameter of the housing 100 is adapted to the outer diameter parameters of the tube 600. The tube 600 is inserted into one end of the housing 100. The end face of the tube 600 contacts the end face of the thrust ball bearing 300 and can rotate relative to it. When the tube 600 is fixed, the housing 100 rotates around the outer wall of the tube 600 in a circular motion.

[0064] The cover 200 is provided at the other end of the housing 100 for assembling the thrust ball bearing 300 into the housing 100, so that the thrust ball bearing 300 is concentric with the housing 100;

[0065] The press-fit ball plunger 400 is arranged in annular array on the housing 100, extending inward through the housing wall of the housing 100 to clamp and limit the tube 600, and the center of the tube 600 is collinear with the center of the housing 100.

[0066] The elastic scribing needle 500 is mounted radially on the housing 100 and has a scribing needle 520. The elastic scribing needle 500 extends inward through the shell wall of the housing 100, and the scribing needle 520 contacts the outer wall of the pipe 600. The scribing needle 520 scribing lines on the outer wall of the pipe 600. Thus, it is not limited by the construction site conditions. As long as the device is fitted on the pipe 600, the outer wall of the pipe 600 can be scribing anytime and anywhere. Moreover, the structure is simple and easy to carry, which improves the work efficiency of scribing the pipe 600.

[0067] The technical solutions described in the embodiments of this application above have at least the following technical effects or advantages:

[0068] Because a press-fit ball plunger 400 is provided on the housing 100, the press-fit ball plunger 400 of the annular array can center and clamp the tube 600, ensuring that the center of the tube 600 is collinear with the center of the housing 100.

[0069] Since a thrust ball bearing 300 is provided at one end of the housing 100, and the end face of the tube 600 is pressed and contacted with the end face of the thrust ball bearing 300, the distance between the elastic scriber 500 and the end face of the thrust ball bearing 300 is the position dimension of the scribe line on the tube 600, thus realizing the scribe line on the tube 600.

[0070] To ensure the stability of the structure in this embodiment, the cover 200 is disc-shaped and is detachably connected to the housing 100. The centers of the cover 200 and the housing 100 converge on a central axis for assembling the thrust ball bearing 300 at the end of the housing 100. A protruding drive shaft 210 is provided on the outside of the cover 200. The drive shaft 210 has a hexagonal hole 211 inside for connecting a tool to drive the device to rotate around the tube 600.

[0071] In this embodiment, bolt through holes are evenly distributed on the cover 200, and the end face of the housing 100 is provided with internal threads corresponding to the bolt through holes. The cover 200 and the housing 100 are connected together by bolts to form a detachable connection.

[0072] Specifically, a gasket is fitted inside the cover 200, or a boss is provided inside the cover 200 (not shown in the figure of this embodiment), which is used to adjust the gap between the cover 200 and the thrust ball bearing 300 so that the thrust ball bearing 300 is housed in the housing 100.

[0073] The technical solutions described in the embodiments of this application above have at least the following technical effects or advantages:

[0074] Since a drive shaft 210 is provided on the outside of the cap 200, and a hexagonal hole 211 is provided inside the drive shaft 210, which can be connected to a tool to drive the device to rotate around the tube 600; therefore, when the device rotates, the tube 600 remains stationary, which can avoid repeatedly clamping the tube 600, save the operator's physical strength and improve the efficiency of the tube 600 marking work.

[0075] To further ensure the stability of the structure in this embodiment, the housing 100 is hollow. Inside the housing 100, one end has a bearing hole 120 for embedding a thrust ball bearing 300, and the other end has a tube hole 110 for receiving a tube 600. The inner diameter of the thrust ball bearing 300 is smaller than the diameter of the tube 600, allowing the end face of the tube 600 to contact the end face of the thrust ball bearing 300, and ensuring that the thrust ball bearing 300 is fixed within the bearing hole 120 of the housing 100. The bearing 300 can rotate within the bearing bore 120; the housing wall of the housing 100 has a circular array of plunger holes 130 for mounting a press-fit ball plunger 400 to clamp the tube 600 and make the tube 600 concentric with the housing 100; the housing wall of the housing 100 has a scribing hole 140 for mounting an elastic scribing needle 500 to perform scribing operations on the tube 600; the distance between the center of the scribing hole 140 and the end face of the thrust ball bearing 300 is the position dimension of the scribing on the tube 600.

[0076] To optimize the structure of this embodiment, the plunger holes 130 are distributed at equal angles along the circumferential surface of the housing 100, and the number of plunger holes 130 is at least three rows, so that the tube 600 is centered and concentric with the center line of the housing 100.

[0077] Preferably, the shell wall of the housing 100 is provided with scribe holes 140 for mounting elastic scribes 500, and the required elastic scribe 500 is selected according to the scribe position of the tube 600.

[0078] The technical solutions described in the embodiments of this application above have at least the following technical effects or advantages:

[0079] Since the scribing hole 140 is provided on the housing 100 and the elastic scribing needle 500 is assembled, the distance between the center of the scribing needle 520 and the end face of the thrust ball bearing 300 is the position dimension of the scribing on the tube 600. Therefore, after the device is manufactured according to the diameter of the tube 600 and the scribing position, it can be scribing quickly in batches.

[0080] To further optimize the structure of this embodiment, the press-fit ball plunger 400 includes a cylinder 410, an outer sleeve 420, a compression spring 430, and a ball head 440;

[0081] An outer sleeve 420 is fitted onto the cylinder 410. A compression spring 430 is installed inside the outer sleeve 420. A ball head 440 is provided on the outside of the compression spring 430 for point contact limiting the tube 600. A press-fit ball head plunger 400 is assembled in the plunger hole 130. The center lines of the cylinder 410 and the plunger hole 130 are concentric. The bottom end face of the cylinder 410 is tangent to the outer surface of the housing 100.

[0082] To further optimize the structure of this embodiment, the elastic scribing needle 500 includes a needle base 510, a scribing needle 520, an end cap 530, and a spring 540.

[0083] The scribing needle 520 includes a needle bar with a needle tip at the front end for scribing lines on the outer wall of the tube 600, and a needle handle at the rear end of the needle bar.

[0084] The needle holder 510 is a hollow cylindrical shape and is fitted into the scribe hole 140 of the housing 100. A conical cavity is provided in the lower part of its cavity, and the scribe needle 520 is housed in the cavity. The needle tip extends out to the conical cavity end of the needle holder 510, and the needle handle limits the scribe needle 520 in the cavity of the needle holder 510.

[0085] Spring 540 is fitted into the cavity of needle holder 510 and presses against needle handle to adjust the rebound force of the scribe needle 520 when it contacts the tube 600.

[0086] The end cap 530 is screwed to the needle seat 510, and the compressed spring 540 is pressed against the needle shank. By adjusting the relative distance between the end cap 530 and the needle seat 510, the tension of the spring 540 can be adjusted, thereby adjusting the insertion depth of the scribing needle 520 and controlling the depth of the scribing.

[0087] In this embodiment, the needle holder 510 is welded to the scribe hole 140 of the housing 100.

[0088] The technical solutions described in the embodiments of this application above have at least the following technical effects or advantages:

[0089] Since the scriber 520, spring 540, and end cap 530 are sequentially inserted into the needle holder 510 and sealed by screwing the end cap 530, the insertion depth of the scriber 520 and the rebound force after contacting the tube 600 can be adjusted by rotating the end cap 530 to adjust the tightness of the spring 540.

[0090] The working process of this embodiment:

[0091] After the portable tube 600 scribing device is assembled, it is fitted onto the end of the tube 600, with the end face of the tube 600 in contact with the end face of the thrust ball bearing 300 and able to move relative to it. The end cap 530 of the elastic scribing needle 500 is tightened, and the tip of the scribing needle 520 contacts the outer wall of the tube 600. When the driving tool drives the device to work, the tube 600 remains stationary, and the device moves in a circular motion around the outer wall of the tube 600, with the tip of the scribing needle 520 scribing lines on the outer wall of the tube 600 to achieve the function. The scribing position of the tube 600 can be adjusted by changing the position of the scribing hole 140 in the housing 100, and the scribing depth can be adjusted by adjusting the screwing depth of the end cap 530 and the rebound force of the spring 540.

[0092] It is worth noting that all contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of the thrust ball bearing 300, press-fit ball plunger 400, compression spring 430, scriber 520 and spring 540 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 figures because they are existing technologies, and will not be described here.

[0093] 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 portable pipe marking device, characterized in that: include: A thrust ball bearing (300) is used to bear the axial load of a tube (600) in contact with it, and is matched according to the parameters of the tube (600), and the end face of the thrust ball bearing (300) is pressed into contact with the end face of the tube (600); A housing (100) is provided for housing the thrust ball bearing (300). The inner diameter of the housing (100) is adapted to the outer diameter parameters of the tube (600). The tube (600) is inserted into one end of the housing (100). The end face of the tube (600) contacts the end face of the thrust ball bearing (300) and is able to rotate relative to it. A cover (200) is disposed at the other end of the housing (100) for assembling the thrust ball bearing (300) into the housing (100) such that the thrust ball bearing (300) is concentric with the housing (100); A press-fit ball plunger (400) is arranged in annular array on the housing (100), extending inward through the housing wall of the housing (100) to clamp and limit the tube (600), and the center of the tube (600) is collinear with the center of the housing (100); and An elastic scriber (500) is mounted radially on the housing (100) and has a scriber (520) extending inward through the housing wall of the housing (100), wherein the scriber (520) contacts the outer wall of the tube (600) and scribes lines on the outer wall of the tube (600).

2. The portable pipe marking device according to claim 1, characterized in that: The cover (200) is disc-shaped and is detachably connected to the housing (100). The centers of the cover (200) and the housing (100) converge on a central axis for mounting the thrust ball bearing (300) at the end of the housing (100). A protruding drive shaft (210) is provided on the outside of the cover (200). The drive shaft (210) has a hexagonal hole (211) inside for connecting a tool to drive the device to rotate around the tube (600).

3. The portable pipe marking device according to claim 1, characterized in that: The housing (100) is hollow. Inside the housing (100), one end has a bearing hole (120) for inserting the thrust ball bearing (300), and the other end has a tube hole (110) for receiving the tube (600). The inner diameter of the thrust ball bearing (300) is smaller than the diameter of the tube (600), allowing the end face of the tube (600) to contact the end face of the thrust ball bearing (300), and ensuring that the thrust ball bearing (300) is fixed to the shaft of the housing (100). Inside the bearing hole (120), the thrust ball bearing (300) can rotate within the bearing hole (120); on the shell wall of the housing (100), there is a circular array of plunger holes (130) for assembling the press-fit ball plunger (400) to clamp the tube (600) and make the tube (600) concentric with the housing (100); on the shell wall of the housing (100), there is a scribing hole (140) for assembling the elastic scribing needle (500) to perform scribing operations on the tube (600).

4. The portable pipe marking device according to claim 3, characterized in that: The plunger holes (130) are distributed at equal angles along the circumference of the housing (100), and the number of plunger holes (130) is at least three rows, so that the tube (600) is centered and concentric with the center line of the housing (100).

5. The portable pipe marking device according to claim 3, characterized in that: The shell wall of the housing (100) is provided with the scribe holes (140) for assembling the elastic scribe (500), and the required elastic scribe (500) is selected according to the scribe position of the tube (600).

6. The portable pipe marking device according to claim 3, characterized in that: The press-fit ball plunger (400) includes a cylinder (410), an outer sleeve (420), a compression spring (430), and a ball head (440). The outer sleeve (420) is fitted onto the cylinder (410), and the compression spring (430) is provided inside the outer sleeve (420). The ball head (440) is provided on the outside of the compression spring (430) for point contact to limit the tube (600). The press-fit ball plunger (400) is assembled in the plunger hole (130), the cylinder (410) is concentric with the center line of the plunger hole (130), and the bottom end face of the cylinder (410) is tangent to the outer surface of the housing (100).

7. The portable pipe marking device according to claim 3, characterized in that: The elastic scribing needle (500) includes: A scribing needle (520) includes a needle bar, a needle tip is provided at the front end of the needle bar for scribing lines on the outer wall of the tube (600), and a needle handle is provided at the rear end of the needle bar. The needle holder (510) is a hollow cylindrical shape and is fitted into the scribe hole (140) of the housing (100). A conical cavity is provided in the lower part of its cavity, and the scribe (520) is housed in the cavity. The needle tip extends out to the conical cavity end of the needle holder (510), and the needle handle limits the scribe (520) in the cavity of the needle holder (510). A spring (540), which is fitted into the cavity of the needle holder (510) and presses against the needle shank, is used to adjust the rebound force of the scriber (520) in contact with the tube (600); and End cap (530), which is screwed to the needle seat (510), compresses the spring (540) and abuts it against the needle handle, and adjusts the relative distance between the end cap (530) and the needle seat (510).

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