Iris screwing pipe marking device

Abstract

The utility model provides an iris screwing pipe marking device. Comprising a chuck, an adjusting screw rod, a shell, a mechanical iris and a thrust ball bearing, the chuck is used for centering and clamping a pipe; the adjusting screws are of a spiral adjusting structure and are arrayed on the chuck around the circumference of the pipe, one ends of the adjusting screws are connected to the end of the chuck, and the adjusting screws and clamping jaws of the chuck are evenly distributed in a staggered mode. The shell is of a stepped shaft sleeve structure, a bearing hole is formed in the shell, the end of the shell is connected with the other end of the adjusting screw, the distance between the chuck and the shell is adjusted through the adjusting screw, and the chuck and the center of the shell are collinear. The thrust ball bearing is embedded in a bearing hole of the shell and is used for rotating in the shell and bearing an axial load; the mechanical iris is assembled on the outer side of the thrust ball bearing and used for centering and clamping the pipe, and the clamping center of the mechanical iris coincides with the center of the pipe; the mechanical iris is provided with a marking pin which makes contact with the outer contour of the pipe and rotates around the outer contour of the pipe to conduct marking operation. And the pipe is inserted into the mechanical iris, so that the scribing efficiency is improved.

Description

Technical Field

[0001] This utility model relates to marking in the field of pipelines, and more particularly to an iris-tightening 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 an iris-tightening pipe marking device. This device is concentrically connected to a housing via a chuck. A concentric mechanical iris is installed inside the housing to center and clamp the pipe. The pipe and the mechanical iris are collinear. A marking needle within the mechanical iris rotates around the pipe, leaving clear lines on the pipe surface, thus solving the technical problem of pipe marking.

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

[0007] The iris tightening tube marking device includes a chuck, adjusting screw, housing, mechanical iris, and thrust ball bearing;

[0008] The chuck is used to center and clamp the tube; the adjusting screw is a spiral adjustment structure, arrayed around the circumference of the tube on the chuck, with one end connected to the end of the chuck, and evenly distributed with the chuck's jaws; the housing is a stepped bushing structure with bearing holes inside, and the end of the housing is connected to the other end of the adjusting screw. The distance between the chuck and the housing is adjusted by adjusting the adjusting screw, and the centers of the chuck and the housing are collinear; the thrust ball bearing is embedded in the bearing hole of the housing, used to rotate within the housing and bear axial loads; the mechanical iris is assembled on the outside of the thrust ball bearing, used to center and clamp the tube, and the clamping center of the mechanical iris coincides with the center of the tube; the mechanical iris has a scribing needle, which contacts and rotates around the outer contour of the tube to perform scribing operations.

[0009] Positive effects: The technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0010] 1. Because the embodiments of this application adopt a structure in which the shell and the chuck are concentrically connected and their centers are collinear, the mechanical iris clamps the tube and centers it concentrically with the shell. The chuck is concentrically connected with the tube, that is, the mechanical iris, the chuck and the tube are concentric. The mechanical iris is inserted into the tube in the inner cavity of the shell, and the scribing needle in the mechanical iris contacts the outer wall of the tube and scribing lines on the outer wall of the tube. This effectively solves the technical problem of scribing lines on the construction site in the prior art, improves the scribing efficiency, and thus achieves the technical effect of scribing lines on the tube through the mechanical iris.

[0011] 2. Because this application embodiment uses an adjusting screw between the chuck and the housing, the distance between the two is adjusted by adjusting the screw, the position of the pipe marking is determined as needed, the housing is fixed by adjusting the screw, the pipe passes through the housing, and the extension end is inserted into the chuck for fixation. This effectively solves the technical problem of pipe marking on the construction site in the prior art. The position of the scriber in the mechanical iris is the position of the pipe marking, which improves the marking efficiency and thus achieves the technical effect of pipe marking by mechanical iris.

[0012] 3. Because the embodiments of this application adopt the technical means of mounting one end of the blade in the curved groove of the dial via a pin and the other end in the keyway of the chassis via a key bar, and having a series of limiting blocks intersecting with the keyway on the chassis, the technical problem of pipe marking on the construction site in the prior art is effectively solved. When the lever is turned, the blade opens or closes around the center of the mechanical iris, centering and clamping the pipe passing through the center of the mechanical iris, improving the marking efficiency, and thus achieving the technical effect of marking pipes through the mechanical iris.

[0013] 4. Because this embodiment of the application uses a technique of assembling a ball-head plunger on the tip of blade I and a scribing needle on the tip of blade II, the ball-head plunger rolls in contact with the outer wall of the pipe, ensuring the uniformity of the support on the circumferential surface of the pipe throughout the scribing process, resulting in higher scribing quality; when the scribing needle on the tip of blade II contacts the pipe and forms relative motion, it leaves a clear line trajectory around the outer contour of the pipe on the pipe surface; effectively solving the technical problem of pipe scribing on the construction site in the prior art, improving scribing efficiency, and thus achieving the technical effect of pipe scribing through mechanical iris scanning.

[0014] Suitable for use as an iris tightening tube marking device. Attached Figure Description

[0015] 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.

[0016] Figure 1 This is the southeast isometric view of this embodiment;

[0017] Figure 2 This is a southeast isometric half-sectional view of this embodiment;

[0018] Figure 3 This is the northeast isometric view of this embodiment;

[0019] Figure 4 This is a half-section view of the southwest isometric view of this embodiment;

[0020] Figure 5 This is the front sectional view of this embodiment;

[0021] Figure 6 This is a side view of this embodiment;

[0022] Figure 7 This is a southeast isometric half-section view of the mechanical iris.

[0023] Figure 8 Northwest isometric view of the mechanical iris;

[0024] Figure 9 This is an isometric half-section view of the southeastern part of the blade and chassis.

[0025] Figure 10 This is an isometric half-section view of the southeast side of the base;

[0026] Figure 11 This is an isometric half-section view of the northwest corner of the dial.

[0027] Figure 12 This is the southeast isometric view of blade I;

[0028] Figure 13 Northwest isometric view of blade I;

[0029] Figure 14 This is the southeast isometric view of blade II;

[0030] Figure 15 Northwest isometric view of blade II;

[0031] Figure 16 This is an isometric view of the southeast side of the ball-head plunger.

[0032] Figure 17 This is the southwest isometric view of the ball-head plunger.

[0033] In the picture:

[0034] 1. Chuck;

[0035] 2. Adjust the screw.

[0036] 21. Double-ended bolt,

[0037] 22. Spiral sleeve I,

[0038] 23. Spiral Sleeve II;

[0039] 3. Shell;

[0040] 4. Mechanical iris,

[0041] 41. Dial,

[0042] 411. Curved groove,

[0043] 412. Turn your hand.

[0044] 413. Cavity

[0045] 42. Leaf blade

[0046] 421. Pin,

[0047] 422. Keybar

[0048] 423. Ball-head plunger; 4231. Cylindrical cylinder; 4232. Sleeve; 4233. Compression spring; 4234. Ball bearing.

[0049] 424. Strike,

[0050] 43. Chassis

[0051] 431. Keyway,

[0052] 432. Limit block;

[0053] 5. Thrust ball bearing. Detailed Implementation

[0054] 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.

[0055] This application embodiment solves the problem of low marking efficiency in the prior art by providing an iris tightening tube marking device. The tube is positioned in the housing 3 by a chuck 1 and the marking needle 424 in the mechanical iris 4 rotates around the tube to achieve tube marking.

[0056] According to the instruction manual Figure 1-6 As shown, the iris tightening tube marking device includes a chuck 1, an adjusting screw 2, a housing 3, a mechanical iris 4, and a thrust ball bearing 5;

[0057] Chuck 1 is used to center and clamp the tube;

[0058] In this embodiment, the chuck 1 is a three-jaw chuck 1, and the tube passes through the three-jaw chuck 1 and is fixed at the end of the tube;

[0059] The adjusting screw 2 is a spiral adjusting structure, which is arranged in a circular array around the tube on the chuck 1. One end is connected to the end of the chuck 1, and the screws are evenly distributed and interleaved with the jaws of the chuck 1.

[0060] In this embodiment, there are three adjusting screws 2;

[0061] The housing 3 is a stepped bushing structure with bearing holes inside. The end of the housing 3 is connected to the other end of the adjusting screw 2. The distance between the chuck 1 and the housing 3 is adjusted by adjusting the adjusting screw 2, and the centers of the chuck 1 and the housing 3 are collinear.

[0062] The thrust ball bearing 5 is embedded in the bearing bore of the housing 3 and is used to rotate within the housing 3 and bear axial loads;

[0063] The mechanical iris 4 is mounted on the outside of the thrust ball bearing 5 and is used to center and clamp the tube. The clamping center of the mechanical iris 4 coincides with the center of the tube. The mechanical iris 4 has a scribing needle 424. When the mechanical iris 4 centers and clamps the tube, the scribing needle 424 contacts and rotates around the outer contour of the tube to perform scribing operations.

[0064] The technical solutions described in the embodiments of this application above have at least the following technical effects or advantages:

[0065] Since the housing 3 and the chuck 1 are concentrically connected and their centers are collinear, the mechanical iris 4 clamps the tube and is concentric with the housing 3. The chuck 1 is concentrically connected with the tube. Therefore, the mechanical iris 4, the chuck 1, and the tube are concentric. Thus, the scribing needle 424 in the mechanical iris 4 contacts the outer wall of the tube and scribing lines on the outer wall of the tube. As a result, it is not limited by the conditions of the construction site. The device only needs to be fitted onto the tube, and the outer wall of the tube can be scribing anytime and anywhere. Moreover, the structure is simple and easy to carry, which improves the efficiency of tube scribing.

[0066] Since an adjusting screw 2 is provided between the chuck 1 and the housing 3, the distance between the two can be adjusted by adjusting the screw 2. Therefore, the position of the tube marking is determined according to the requirements, the housing 3 is fixed by adjusting the screw 2, the tube passes through the housing 3, the extension end is inserted into the chuck 1 and fixed, and the position of the scriber 424 in the mechanical iris 4 is the position of the tube marking, thus realizing the tube marking.

[0067] To ensure the stability of the structure in this embodiment, please refer to the appendix to the specification. Figure 7-15 The mechanical iris 4 is an Archimedes spiral iris, including a dial 41, a blade 42 and a base 43;

[0068] The dial 41 is located on the side away from the thrust ball bearing 5. The dial 41 is a hollow disc. Curved grooves 411 are arranged in a circular array on the dial 41. A lever 412 is provided on the outer circumference of the dial 41 for driving the dial 41. A cavity 413 is provided on the side of the dial 41.

[0069] The chassis 43 is assembled in the housing 3 on one side of the adjacent thrust ball bearing 5. The chassis 43 is a hollow disc. Keyways 431 are arranged in a circumferential array on the chassis 43. Limiting blocks 432 are set between the keyways 431. The limiting blocks 432 and the keyways 431 are arranged alternately and assembled in the cavity 413 of the dial 41.

[0070] The blade 42 has a block-shaped structure, with a ball-head plunger 423 or a scribing needle 424 at the tip for contacting the tube. The blade 42 includes blade 42Ⅰ and blade 42Ⅱ. Blade 42Ⅰ has a ball-head plunger 423 at the tip for rotating around the tube, and blade 42Ⅱ has a scribing needle 424 at the tip for scribing around the tube. Blades 42Ⅰ and 42Ⅱ are arranged alternately. A pin 421 is provided on one side of the blade 42. The pin 421 matches the curved groove 411 of the dial 41 for assembling the blade 42 into the cavity 413 of the dial 41. A key bar 422 is provided on the other side of the blade 42. The key bar 422 matches the keyway 431 of the chassis 43 for assembling the blade 42 onto the chassis 43. The pin 421 and the key bar 422 are located on both sides of the blade and correspond to each other, located on the same radial line of the blade 42.

[0071] The blades 42 are arranged in a circumferential array between the dial 41 and the base 43. The lever 412 on the dial 41 controls the opening or closing of the blades 42 and is radially limited by the limiting block 432 on the base 43. The diameter of the hollow part of the dial 41 and the base 43 is slightly larger than the diameter of the tube, leaving space for the tube to be elastically clamped.

[0072] Preferably, the curved groove 411 is an Archimedean spiral groove.

[0073] In this embodiment, there are six curved grooves 411, keyways 431, and limiting blocks 432, and three blades 42Ⅰ and three blades 42Ⅱ arranged at intervals.

[0074] Specifically, the tip of blade 42Ⅰ is provided with a cylindrical hole 4231 for assembling a ball-head plunger 423 to ensure the uniformity of the support on the circumferential surface of the tube throughout the scribing process;

[0075] Specifically, the scribing needle 424 on the tip of blade 42Ⅱ is made of high-quality alloy steel. This material has high hardness, good wear resistance, and corrosion resistance. After fine grinding, its hardness can reach HRC60-62 degrees, ensuring that the scribing needle 424 can leave clear lines on the surface of the metal tube. The scribing efficiency is higher and the wear of the scribing tip is slower.

[0076] The technical solutions described in the embodiments of this application above have at least the following technical effects or advantages:

[0077] Since one end of the blade 42 is mounted in the curved groove 411 of the dial 41 via the pin 421 and the other end is mounted in the keyway 431 of the chassis 43 via the key bar 422, and the chassis 43 has a series of limiting blocks 432 that intersect with the keyway 431, when the lever 412 is turned, the blade 42 opens or closes around the center of the mechanical iris 4, centering and clamping the tube passing through the center of the mechanical iris 4.

[0078] Because the ball plunger 423 is mounted on the tip of the blade 42Ⅰ, the ball plunger 423 rolls in contact with the outer wall of the tube, and the mechanical iris 4 centers and clamps the tube more stably, ensuring the uniformity of the support on the circumferential surface of the tube throughout the scribing process, resulting in higher scribing quality.

[0079] Since the blade 42Ⅱ is equipped with a scribing needle 424, when the scribing needle 424 on the blade 42Ⅱ comes into contact with the tube and forms a relative motion, it leaves a clear line track around the outer contour of the tube on the tube surface, thus realizing the tube scribing function.

[0080] To further ensure the stability of the structure in this embodiment, please refer to the appendix to the specification. Figure 16-17 The ball plunger 423 is a press-fit elastic ball plunger 423, including a cylinder 4231, a sleeve 4232, a compression spring 4233 and a ball 4234;

[0081] A sleeve 4232 is mounted on the upper part of the cylinder 4231. A compression spring 4233 is held inside the sleeve 4232. A ball 4234 is provided at the top of the compression spring 4233 for point contact with the tube. The centering clamping force is evenly applied to the radial direction of the tube, which makes it easy for the blade 42Ⅰ to clamp and center the tube at multiple points. The tip of the blade 42Ⅰ is provided with a hole in the cylinder 4231. The cylinder 4231 is fixedly mounted in the hole in the cylinder 4231.

[0082] The technical solutions described in the embodiments of this application above have at least the following technical effects or advantages:

[0083] Because the tip of blade 42Ⅰ is equipped with a ball plunger 423, the ball plunger 423 makes rolling contact with the outer wall of the tube. At the same time, the plunger has a certain amount of expansion and contraction. Slight elliptical deformation of the tube does not affect the scribing quality. This assists blade 42Ⅱ in centering and clamping the tube for scribing operations.

[0084] To optimize the structure of this embodiment, please refer to the appendix to the specification. Figure 5-6 The adjusting screw 2 includes a double-ended bolt 21 and a screw sleeve;

[0085] The double-ended bolt 21 is a screw structure. The spiral directions of the threads at both ends of the double-ended bolt 21 are opposite, with one end being a left-hand spiral and the other end being a right-hand spiral.

[0086] The screw sleeve includes screw sleeve I 22 and screw sleeve II 23. Screw sleeve I 22 is a left-hand helix and is screwed to the left-hand helix at one end of the double-ended bolt 21. Screw sleeve II 23 is a right-hand helix and is screwed to the right-hand helix at the other end of the double-ended bolt 21.

[0087] The spiral sleeves are respectively installed on the chuck 1 and the housing 3, and are screwed to the spiral sleeves by double-headed bolts 21. The distance between the chuck 1 and the housing 3 is adjusted to determine the position of the tube marking.

[0088] The working principle of this embodiment:

[0089] With the chuck 1 placed on a flat surface, the lever 412 of the mechanical iris 4 is moved to open the blade 42 of the iris clamping part. The tube is then inserted into the chuck 1 along the mechanical iris 4 and the chuck 1 is locked. Due to the action of the thrust ball bearing 5, the mechanical iris 4 will gradually lock when rotated clockwise until the tip of the blade 42 contacts the tube and forms a relative motion to achieve the tube marking function.

[0090] A ball plunger 423 is installed on blade 42Ⅰ, and a scribing needle 424 is provided on blade 42Ⅱ. The ball plunger 423 and the scribing needle 424 are distributed at intervals. The ball plunger 423 has a sliding function to prevent the scribing needle 424 from locking with the tube and thus being unable to scribing. Since the dial 41 and the base 43 in the mechanical iris 4 can move relative to each other, when the lever 412 is turned to clamp, the bottom of the mechanical iris 4 can be held still by hand. When the lever 412 is turned, the mechanical iris 4 can be quickly locked. Then the mechanical iris 4 as a whole drives the blade 42 and the tube to move relative to each other.

[0091] The length of the adjusting screw 2 can be changed. By adjusting the length of the adjusting screw 2, the relative distance between the mechanical iris 4 and the end face of the tube can be adjusted, thereby adjusting the scribing distance on the end face of the tube. The bottom surface of the thrust ball bearing 5 is fixed to the housing 3, and the top surface of the thrust ball bearing 5 is fixed to the mechanical iris 4. The mechanical iris 4 rotates relative to the housing 3.

[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 chuck 1 and thrust ball bearing 5 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.

[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. An iris-tightening tube marking device, characterized in that: include; Chuck (1), chuck (1) is used to center and clamp the tube; Adjusting screw (2) is a spiral adjustment structure that is arranged in a circular array around the tube on the chuck (1). One end is connected to the end of the chuck (1) and is evenly distributed with the jaws of the chuck (1). The housing (3) is a stepped bushing structure with bearing holes inside. The end of the housing (3) is connected to the other end of the adjusting screw (2). The distance between the chuck (1) and the housing (3) is adjusted by adjusting the screw (2), and the centers of the chuck (1) and the housing (3) are collinear. A thrust ball bearing (5) is fitted into a bearing bore in the housing (3) for rotating within the housing (3) and bearing axial loads; and Mechanical iris (4), the mechanical iris (4) is mounted on the outside of the thrust ball bearing (5) for centering and clamping the tube. The clamping center of the mechanical iris (4) coincides with the center of the tube. The mechanical iris (4) has a scribing needle (424), which contacts and rotates around the outer contour of the tube to perform scribing operations.

2. The iris tightening tube marking device according to claim 1, characterized in that: The mechanical iris (4) is an Archimedes spiral iris, comprising: The dial (41) is located on the side away from the thrust ball bearing (5). The dial (41) is a hollow disc with a circumferential array of curved grooves (411) on the dial (41). A lever (412) is provided on the outer circumference of the dial (41) for driving the dial (41). A cavity (413) is provided on the side of the dial (41). The chassis (43) is mounted in the housing (3) on one side of the adjacent thrust ball bearing (5). The chassis (43) is a hollow disc. Keyways (431) are arranged in a circumferential array on the chassis (43). Limiting blocks (432) are set between the keyways (431). The limiting blocks (432) are staggered with the keyways (431) and are mounted in the cavity (413) of the dial (41). The blade (42) is a block structure, with a ball-head plunger (423) or a scribing needle (424) at the tip; the blade (42) includes blade (42) I and blade (42) II, wherein the tip of blade (42) I is provided with a ball-head plunger (423) for rotating around the tube, and the tip of blade (42) II is provided with a scribing needle (424) for scribing around the tube, and blades (42) I and blades (42) II are arranged alternately; a pin (421) is provided on one side of the blade (42). The pin (421) matches the curved groove (411) of the dial (41) to assemble the blade (42) into the cavity (413) of the dial (41); a key bar (422) is provided on the other side of the blade (42), and the key bar (422) matches the keyway (431) of the chassis (43) to assemble the blade (42) onto the chassis (43); the pin (421) and the key bar (422) are located on both sides of the blade and correspond to each other, located on the same radial line of the blade (42); Among them, the blades (42) are arranged in a circumferential array between the dial (41) and the chassis (43). The lever (412) on the dial (41) controls the opening or closing of the blades (42) and is radially limited by the limiting block (432) on the chassis (43). The diameter of the hollow part of the dial (41) and the chassis (43) is slightly larger than the diameter of the tube, leaving space for the tube to be elastically clamped.

3. The iris tightening tube marking device according to claim 2, characterized in that: The curved groove (411) is an Archimedes spiral groove.

4. The iris tightening tube marking device according to claim 2, characterized in that: There are six curved grooves (411), keyways (431), and limiting blocks (432), and three blades (42) I and three blades (42) II arranged at intervals.

5. The iris tightening tube marking device according to claim 2, characterized in that: The blade (42) I has a cylindrical (4231) hole on its tip for assembling a ball-head plunger (423).

6. The iris tightening tube marking device according to claim 2, characterized in that: The scriber (424) on the tip of the blade (42) II is made of high-quality alloy steel.

7. The iris tightening tube marking device according to claim 2, characterized in that: The ball head plunger (423) is a press-fit elastic ball head plunger (423), including a cylinder (4231), a sleeve (4232), a compression spring (4233), and a ball (4234). A sleeve (4232) is mounted on the upper part of the cylinder (4231). A compression spring (4233) is held inside the sleeve (4232). A ball (4234) is provided at the top of the compression spring (4233) for point contact with the tube. The centering clamping force is evenly applied to the radial direction of the tube, which makes it easy for the blade (42)Ⅰ to clamp and center the tube at multiple points. Among them, the tip of the blade (42)Ⅰ is provided with a cylinder (4231) hole, and the cylinder (4231) is fixed in the cylinder (4231) hole.

8. The iris tightening tube marking device according to claim 1, characterized in that: The adjusting screw (2) includes a double-ended bolt (21) and a screw sleeve; The double-ended bolt (21) is a screw structure. The spiral directions of the threads at both ends of the double-ended bolt (21) are opposite, with one end being a left spiral and the other end being a right spiral. The screw sleeve includes screw sleeve I (22) and screw sleeve II (23). Screw sleeve I (22) is a left helix and is screwed to the left helix at one end of the double-ended bolt (21). Screw sleeve II (23) is a right helix and is screwed to the right helix at the other end of the double-ended bolt (21). The screw sleeves are respectively set on the chuck (1) and the housing (3), and are screwed to the screw sleeves by double-headed bolts (21) to adjust the distance between the chuck (1) and the housing (3).

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