CN114274115A

CN114274115A - Pipe marking device and method based on end face positioning

Info

Publication number: CN114274115A
Application number: CN202111415871.6A
Authority: CN
Inventors: 徐建; 楼慧元; 张华卿; 金肃静
Original assignee: Zhejiang Scientific Research Institute of Transport
Current assignee: Zhejiang Scientific Research Institute of Transport
Priority date: 2021-11-25
Filing date: 2021-11-25
Publication date: 2022-04-05

Abstract

The invention discloses a pipe marking device and a marking method based on end face positioning, and relates to the technical field of pipe detection. Has the following beneficial effects: the positioning mode of the invention does not need auxiliary equipment, and is simple and efficient; the operability and the accuracy of the line marking are improved; the coaming with regular shape can make the angle formed by the line drawing rod piece accurate, and the manual adjusting device can flexibly adjust the line drawing rod piece.

Description

Pipe marking device and method based on end face positioning

Technical Field

The invention relates to the technical field of pipe detection, in particular to a pipe marking device and a pipe marking method based on end face positioning.

Background

The ring stiffness is the internal and external pressure load borne by the pressure pipeline, and the ring stiffness can directly determine whether the pipe can safely work under the load action. The method for measuring the ring stiffness of the thermoplastic plastic pipe is 'measurement of ring stiffness of thermoplastic plastic pipe' (GB/T9647-2015), wherein the method comprises the following steps: the ring stiffness test steps of the general pipe (the diameter is less than or equal to 1500mm) are as follows: (1) drawing a straight line on the outer surface of the pipe to be tested along the axial direction in the full length as a mark, and respectively cutting 3 samples a, b and c from the marked pipe; (2) the average length of the test specimens is (300 +/-10) mm; (3) in the case where it cannot be determined that the rigidity of the ring is minimum at a certain position, when the first sample a is placed, its reticle is brought into contact with the upper plate, and the other two samples b and c are placed in the loading apparatus at positions rotated by 120 ° and 240 ° in this order with respect to the first sample a. Therefore, when in inspection, how to draw a straight line on the outer surface of the pipe to be tested along the axial direction in the whole length is taken as a mark, and how to ensure that the samples b and c rotate 120 degrees and 240 degrees in sequence relative to the sample a, wherein the two steps are important factors for measuring the ring stiffness of the thermoplastic pipe.

The general steps of the existing scheme are as follows: (1) drawing a straight line on the outer surface of the pipe to be measured along the axial direction in the full length as a mark: horizontally fixing the pipe, projecting a cursor on the surface of the pipe by using a laser level meter, making red marks at two ends of the pipe, leaning against the outer surface of the pipe by using a guiding rule, aligning the red marks at the two ends, and drawing a red line on the total length of the outer surface of the pipe along the guiding rule by using a marking pen; (2) b and c are accurately rotated by 120 degrees and 240 degrees relative to the sample a: vertically placing the pipe on a circular dial, enabling the pipe to be located at the center of the dial, and aligning a red mark made for the first time with 0 degrees to be used as a reference point; marking blue at a 120-degree position, marking yellow at a 240-degree position, turning over the pipe, vertically placing the other end on a circular dial, enabling the other end to be positioned at the center of the dial, then carrying out mirror image corresponding marking, aligning a red mark with 0 degree, and correspondingly marking yellow and blue at intervals of 120 degrees and 240 degrees in sequence; after marking, the guiding rule is leaned against the outer surface of the pipe, the blue and yellow marks at the two ends are aligned in sequence, and a marking pen is used for drawing a blue line and a yellow line along the whole length of the outer surface of the pipe along the guiding rule respectively. Cutting the sample into three sections by red, blue and yellow lines at the positions of 0 degree, 120 degrees and 240 degrees of the tube in sequence, placing a first sample a on a testing machine, and contacting the red line with an upper flat plate; second sample b, blue line in contact with the upper plate; in the third sample c, the yellow line is contacted with the upper flat plate, so that the samples b and c can be accurately rotated by 120 degrees and 240 degrees relative to the sample a. The main defects are as follows: (1) the fixed level of the sample must be ensured, and the laser level instrument is also ensured to be horizontal, because the level of the fixed sample has errors, the laser level instrument also has errors, and the connecting line of the marks at the two ends of the sample and the central axis of the sample are difficult to ensure to be horizontal, so that the position of the red mark line has deviation, and the accuracy of subsequent marking is influenced; (2) when the pipe is vertically placed on the circular dial, the sections at the two ends of the pipe are required to be flush and are required to be perpendicular to the axis of the pipe. Otherwise, the accurate angle position cannot be ensured during marking; (3) the specification of circular angle scale is less, and the diameter is generally within 200mm, and the diameter is greater than the unable use of tubular product sample more than 200mm, and the tubular product of different diameters needs to use the circular angle scale of different specifications, and the restriction is great, and difficult assurance circular dial's centre of a circle is in the circle center axle of tubular product, and the difficult operation and the accuracy are lower.

Disclosure of Invention

1. Technical problem to be solved by the invention

The invention provides a pipe marking device and a marking method based on end face positioning, aiming at the technical problems of large operation difficulty, low accuracy and very limited application pipe specification of the existing marking device and method.

2. Technical scheme

In order to solve the problems, the technical scheme provided by the invention is as follows:

the utility model provides a tubular product marking device based on terminal surface location, includes base, support, location structure, bounding wall, manual adjusting device and setting-out member, the support rigid coupling is in the base, the support includes a plurality of parallel arrangement's member, be connected with the bounding wall of regular shape on the support, location structure is round platform or circular cone, location structure's main aspects bottom surface is connected in the base, the center of bounding wall is located on the extension line of location structure's center pin, the side of bounding wall is connected with the setting-out member through manual adjusting device, manual adjusting device is used for adjusting the position of setting-out member, the setting-out member with the member of support is parallel, the setting-out member is equipped with the setting-out hole.

Optionally, the two enclosing plates are respectively connected with two ends of the same line drawing rod piece.

Optionally, the coaming is an equilateral triangle, and the manual adjusting device and the line drawing rod piece are located on the normal of the side of the equilateral triangle.

Optionally, manual adjusting device includes handle, screw rod and instruction structure, the handle with the screw rod rigid coupling, the screw rod with bounding wall threaded connection, the screw rod articulate in the setting-out member, be equipped with the scale on the screw rod, the week side of screw rod be equipped with scale complex instruction structure.

Optionally, two ends of the line drawing rod piece are provided with hinge grooves matched with the screw rods.

Optionally, a protrusion is disposed on the periphery of the handle.

Optionally, the enclosing plate is provided with uniformly distributed holes matched with the rod pieces of the bracket.

Optionally, the side wall of the picture line hole is an inclined surface, and the whole cross-sectional shape of the picture line hole is triangular.

As optional, be equipped with extending structure on the setting-out member, extending structure is including connecting the bridge, the both ends sliding connection of connecting the bridge in the setting-out member.

A pipe marking method based on end face positioning comprises the following steps:

firstly, sampling a pipe, cutting the pipe with the length equivalent to that of the line drawing rod piece, ensuring that the section of the pipe is vertical to the central axis of the pipe, and the diameter of the selected pipe is required to be positioned in an interval between the minimum diameter and the maximum diameter of the positioning structure;

secondly, a manual adjusting device of the device is adjusted in advance according to the diameter of the pipe, so that the area of a circular plane defined by the line drawing rod piece is larger than the area of the cross section of the pipe, and the pipe can be vertically and freely put in from the upper end of the device;

thirdly, placing the pipe into the device, sleeving one end of the pipe on the positioning structure, and rotating the pipe to enable the end face of the pipe to be tightly attached to the positioning structure;

fourthly, adjusting the manual adjusting devices inwards to enable the line drawing rod pieces to be attached to the outer surface of the pipe, adjusting the manual adjusting devices step by step at the same time until the vertical telescopic line drawing rod pieces are attached to the outer surface of the pipe and generate radial pressure, keeping the central axis of the pipe and the central axis of the positioning structure on the same straight line in the process, and finally keeping the scales on the screw rod of the manual adjusting device consistent;

fifthly, marking lines with different colors are drawn on the outer surface of the pipe along the drawing line holes by using marking pens with different colors;

sixthly, adjusting the manual adjusting device outwards to expand the line drawing rod piece, enabling the area of a circular plane defined by the line drawing rod piece to be larger than the cross-sectional area of the pipe, and then taking out the pipe to finish marking.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:

according to the technical scheme provided by the invention, the positioning structure is arranged at the end part of the device and is matched with the end surface of the pipe to position the pipe, auxiliary equipment is not required in a positioning mode, and the positioning device is simple and efficient; the line drawing rod pieces are arranged on the peripheral side of the device, and lines are drawn along the line drawing holes, so that the operability and the accuracy of line drawing marks are greatly improved; the line drawing rod piece is connected with the coaming with the regular shape and the manual adjusting device capable of adjusting the line drawing rod piece, the angle formed by the line drawing rod piece can be accurate due to the coaming with the regular shape, the line drawing rod piece can be flexibly adjusted by the manual adjusting device, and the accuracy and the convenience of the device are improved.

Drawings

Fig. 1 is a schematic structural diagram of a pipe marking device based on end face positioning according to an embodiment of the present invention.

Fig. 2 is a sectional view a-a of a pipe marking device based on end face positioning according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a manual adjustment device of a pipe marking device based on end face positioning according to an embodiment of the present invention.

Fig. 4 is a top view of a line drawing rod of the pipe marking device based on end face positioning according to the embodiment of the invention.

Fig. 5 is an implementation schematic diagram of a pipe marking device based on end surface positioning according to an embodiment of the present invention.

1. A base; 2. a support; 3. a circular truncated cone; 4. enclosing plates; 5. a manual adjustment device; 501. a handle; 502. a screw; 503. an indicating structure; 6. drawing a rod piece; 601. a picture wire hole; 602. a connecting bridge; 7. a pipe.

Detailed Description

For a further understanding of the present invention, reference will now be made in detail to the embodiments illustrated in the drawings.

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings. The terms first, second, and the like in the present invention are provided for convenience of describing the technical solution of the present invention, and have no specific limiting effect, but are all generic terms, and do not limit the technical solution of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. The technical solutions in the same embodiment and the technical solutions in different embodiments can be arranged and combined to form a new technical solution without contradiction or conflict, and the technical solutions are within the scope of the present invention.

Examples

Combine attached figure 1-5, a tubular product mark device based on end face location, including base 1, support 2, location structure, bounding wall 4, manual adjusting device 5 and setting-out

member

6, 2 rigid couplings of support in base 1, support 2 includes a plurality of parallel arrangement's member, be connected the bounding wall 4 of regular shape on the support 2, location structure is round platform 3 or circular cone, location structure's big end bottom surface is connected in base 1, the center of bounding wall 4 is located on the extension line of location structure's center pin, the side of bounding wall 4 is connected with setting-out member 6 through manual adjusting device 5, manual adjusting device 5 is used for adjusting the position of setting-out member 6, setting-out member 6 with the member of support 2 is parallel, setting-out member 6 is equipped with setting-out hole 601.

The base 1 is used for supporting the whole device, and the support 2 is used for connecting the coaming 4 with the base 1 and positioning the coaming 4. The manual adjusting device 5 is used for adjusting the position of the line drawing rod piece 6, the line drawing rod piece 6 moves along the radial direction of the enclosing plate 4, and the position of the line drawing rod piece 6 in the radial direction of the enclosing plate 4 can be adjusted so as to place a pipe 7 to be marked and clamp the pipe 7. The line drawing rod piece 6 is used for drawing lines and marks conveniently, quickly and accurately, the line drawing holes 601 in the line drawing rod piece can facilitate marking pens to draw lines along the shape tracks of the line drawing holes 601 in the holes, and the straight drawn marking lines and the fast and efficient line drawing process are guaranteed. The rods of the bracket 2 are uniformly distributed and are perpendicular to the surface of the base 1, and the pipe 7 is accommodated in the bracket 2. The enclosing plate 4 is a connecting structure of the line drawing rod piece 6 and the bracket 2, and the enclosing plate 4 needs to be in a regular shape, wherein the regular shape refers to the number and the angle of the sides of the enclosing plate 4, and does not need to be in central symmetry, for example, if a user needs a mark line which is not uniformly distributed, the sides of the enclosing plate 4 need to be designed according to the distribution of the mark line, because the line drawing rod piece 6 is connected to the middle point of the sides of the enclosing plate 4 through the manual adjusting device 5, the mark line is generally uniformly distributed, and the section of the enclosing plate 4 also has a central symmetry figure. The positioning structure is used for positioning the pipe 7, the center shaft of the pipe 7 and the center rotating shaft of the positioning structure are collinear, the center of the enclosing plate 4 is located on the extension line of the center shaft of the positioning structure, so that the center of the enclosing plate 4 is located on the center shaft of the pipe 7, the line drawing rod piece 6 is located on the radius extension line of the pipe 7, and the purpose of doing so is to avoid dislocation of the line drawing rod piece 6 and cause misalignment of the angle of the mark line on the pipe 7. The manual adjusting device 5 can flexibly adjust the line drawing rod piece 6, and the convenience of the device is improved. The positioning structure is a circular truncated cone 3 or a cone, the circular truncated cone 3 or the cone is provided with an inclined annular side face, after the circular truncated cone 3 or the cone is sleeved on the pipe 7, the end face of the pipe 7 is attached to the annular side face of the circular truncated cone 3 or the cone, and as long as the end face of the pipe 7 is cut neatly, the center shaft of the pipe 7 and the center rotating shaft of the positioning structure can be ensured to be collinear by adjusting the pipe 7 to be parallel to the line drawing rod piece 6, the positioning structure is convenient and fast to use, and operability is high.

The coamings 4 are two and are respectively connected with two ends of the same line drawing rod piece 6. In this embodiment, set up two bounding walls 4 to be connected at the both ends of setting-out member 6, when adjusting manual adjusting device 5 on the bounding wall 4, can adjust the angle of setting-out member 6, the surface of the tubular product 7 of laminating more. Since the surface of the tube 7 is not necessarily flat, flexible adjustment is sometimes required to ensure that the tube 7 is parallel to the line bar 6 as a whole.

The coaming 4 is an equilateral triangle, and the manual adjusting device 5 and the line drawing rod piece 6 are positioned on the normal line of the side of the equilateral triangle. In this example, the apparatus was used to mark the pipe 7 as specified in "determination of the ring stiffness of thermoplastic pipe 7" (GB/T9647-2015), which describes: marking lines at 0 degree, 120 degree and 240 degree positions of the tube 7, so that the coaming 4 is set to be an equilateral triangle, the manual adjusting device 5 and the line marking rod piece 6 are respectively provided with three lines, the respective angle is 120 degrees, the requirements of the 0 degree, 120 degree and 240 degree positions are met, the line is conveniently marked, and the operability and the working efficiency are greatly improved.

The manual adjusting device 5 comprises a handle 501, a screw rod 502 and an indicating structure 503, the handle 501 is fixedly connected with the screw rod 502, the screw rod 502 is in threaded connection with the enclosing plate 4, the screw rod 502 is hinged to the line drawing rod piece 6, scales are arranged on the screw rod 502, and the indicating structure 503 matched with the scales is arranged on the periphery of the screw rod 502. Two ends of the line drawing rod piece 6 are provided with hinge grooves matched with the screw rods 502. A protrusion is arranged on the periphery of the handle 501. The hinged end of the screw 502 is rotatably connected with other parts of the screw 502, and the screw 502 and the coaming 4 generate lifting movement by utilizing threads, so as to control the movement of the line drawing rod piece 6. The scale and indication structure 503 can help the user to observe the moving distance of the line drawing rod 6 more intuitively and accurately, and the accuracy of the device is improved. Handle 501 is turned by the user to rotate screw 502. The scales are in one-to-one correspondence with the diameters of the pipes 7, for example, the scale position corresponding to the pipe 7 with the diameter of 100mm is marked as 100, and when the pipe 7 with the diameter of 100mm is marked, the manual adjusting device 5 is only required to be adjusted to the position with the scales of 100, so that the operation of workers is facilitated.

The coaming 4 is provided with evenly distributed holes matched with the rod pieces of the bracket 2. The evenly distributed holes allow a more stable connection of the bars of the bracket 2.

The side wall of the picture line hole 601 is an inclined plane, and the whole cross section of the picture line hole 601 is triangular. The side wall of the inclined plane can guide the drawing of the drawing line to draw a regular straight line, the drawing hole 601 with the triangular cross section is small in head and matched with the pen point of the drawing pen, the pen point can be limited, and the drawing of the straight line is guaranteed.

Be equipped with extending structure on setting-out member 6, extending structure is including connecting bridge 602, the both ends sliding connection of connecting bridge 602 in setting-out member 6. The connecting bridge 602 and the line drawing rod piece 6 are provided with a sliding groove structure, and two ends of the line drawing rod piece 6 can freely stretch out and draw back. When the manual adjusting device 5 is adjusted, due to the fact that synchronous adjustment cannot be completely achieved, adjustment of two ends of the same line drawing rod piece 6 is sequential, if the line drawing rod piece 6 is fixed in length, the line drawing rod piece is easy to block in the adjusting process, and the blocking situation is avoided after the two ends of the line drawing rod piece 6 can freely stretch out and draw back.

firstly, sampling a pipe 7, cutting the pipe 7 with the length equivalent to that of the line drawing rod piece 6, ensuring that the section of the pipe 7 is vertical to the central axis of the pipe 7, and selecting the diameter of the pipe 7 to be positioned in the interval between the minimum diameter and the maximum diameter of the positioning structure; when the diameter of the pipe 7 is larger than the maximum diameter of the positioning structure, the end face of the pipe 7 contacts with the base 1, and the positioning structure cannot position the pipe 7. When the diameter of the pipe 7 is smaller than the minimum diameter of the positioning structure (when the positioning structure is the circular truncated cone 3), the end surface of the pipe 7 is in contact with the top of the circular truncated cone 3, and the positioning structure cannot position the pipe 7.

Secondly, a manual adjusting device 5 of the device is adjusted in advance according to the diameter of the pipe 7, so that the area of a circular plane surrounded by the line drawing rod piece 6 is larger than the area of the section of the pipe 7, and the pipe 7 can be vertically and freely placed from the upper end of the device;

thirdly, the pipe 7 is placed into the device, one end of the pipe 7 is sleeved on the positioning structure, and the pipe 7 is rotated to enable the end face of the pipe 7 to be tightly attached to the positioning structure; the pipe 7 is vertically put in from the axial direction of the device.

Fourthly, adjusting the manual adjusting devices 5 inwards to enable the line drawing rod pieces 6 to be attached to the outer surface of the pipe 7, adjusting the manual adjusting devices 5 step by step at the same time until the vertical telescopic line drawing rod pieces 6 are attached to the outer surface of the pipe 7 and generate radial pressure, keeping the central axis of the pipe 7 and the central axis of the positioning structure on the same straight line in the process, and finally keeping the scales on the screw 502 of the manual adjusting devices 5 consistent; because some tubular products 7 are soft structures, the tubular products 7 can be deformed when the line drawing rod piece 6 is adjusted, the final marking line can be dislocated, in order to reduce the dislocation, the manual adjusting devices 5 are adjusted by small strokes as much as possible, and all the manual adjusting devices 5 are synchronously adjusted, so that the tubular products 7 are not deformed as much as possible.

Fifthly, marking lines with different colors are drawn on the outer surface of the pipe 7 along the line drawing holes 601 by using marking pens with different colors; the marker pens with different colors are used for distinguishing colors, and the positions of 0 degrees, 120 degrees and 240 degrees of the tube 7 need to be marked in the embodiment, so that the marker pens with three colors, such as red, yellow and blue, can be adopted.

Sixthly, adjusting the manual adjusting device 5 outwards to expand the line drawing rod piece 6, enabling the area of a circular plane surrounded by the line drawing rod piece 6 to be larger than the cross-sectional area of the pipe 7, and then taking out the pipe 7 to finish marking.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.

Claims

1. The utility model provides a tubular product marking device based on end face location, a serial communication port, including base, support, location structure, bounding wall, manual adjusting device and setting-out member, the support rigid coupling is in the base, the support includes a plurality of parallel arrangement's member, be connected with the bounding wall of regular shape on the support, location structure is round platform or circular cone, location structure's main aspects bottom is connected in the base, the center of bounding wall is located on the extension line of location structure's center pin, the side of bounding wall is connected with the setting-out member through manual adjusting device, manual adjusting device is used for adjusting the position of setting-out member, the setting-out member with the member of support is parallel, the setting-out member is equipped with the setting-out hole.

2. The pipe marking device based on end face positioning as claimed in claim 1, wherein two enclosing plates are provided, and are respectively connected with two ends of the same line drawing rod piece.

3. The tube marking device based on end face positioning as claimed in claim 2, wherein the enclosing plate is an equilateral triangle, and the manual adjusting device and the line drawing rod piece are located on the normal of the side of the equilateral triangle.

4. The pipe marking device based on the end face positioning as claimed in claim 1, wherein the manual adjusting device comprises a handle, a screw rod and an indicating structure, the handle is fixedly connected with the screw rod, the screw rod is in threaded connection with the enclosing plate, the screw rod is hinged to the line drawing rod piece, scales are arranged on the screw rod, and the indicating structure matched with the scales is arranged beside the periphery of the screw rod.

5. The pipe marking device based on end face positioning as claimed in claim 4, wherein the two ends of the line drawing rod are provided with hinge grooves matched with the screw rods.

6. The tube marking device based on end face positioning as claimed in claim 4, wherein the handle is provided with a protrusion on the periphery.

7. The tube marking device based on end face positioning as claimed in claim 1, wherein the enclosing plate is provided with evenly distributed holes for matching with the rod pieces of the bracket.

8. The tube marking device based on end face positioning as claimed in claim 1, wherein the side wall of the picture wire hole is a slope, and the cross-sectional shape of the picture wire hole is triangular as a whole.

9. The pipe marking device based on end face positioning as claimed in claim 1, wherein a telescopic structure is arranged on the line drawing rod piece, the telescopic structure comprises a connecting bridge, and two ends of the connecting bridge are slidably connected to the line drawing rod piece.

10. A pipe marking method based on end face positioning is characterized by comprising the following steps: