Positioning device for pipe fitting laser marking

Abstract

The utility model discloses a positioning device for pipe fitting laser marking, which comprises a marking machine and a workbench, the marking machine is fixed on the workbench, a positioning plate is installed on the workbench, a plurality of limiting holes are preset on the positioning plate, the positioning device further comprises a plurality of positioning pieces, and the positioning pieces and the limiting holes are installed in a matched mode. The positioning piece comprises a positioning part installed in cooperation with the limiting hole and a fixing part attached to the pipe wall of the pipe fitting to be marked, before marking operation, the position and angle of the positioning piece are adjusted according to the specification and size of the pipe fitting so that the pipe fitting can be completely fixed to the corresponding area, at the moment, marking operation is conducted, and the marking accuracy is guaranteed; and adjustment is not needed during subsequent pipe fitting marking, it is guaranteed that the marking position of each pipe fitting is fixed and unique, and the phenomenon that marking is uneven is avoided.

Description

Technical Field

[0001] The utility model relates to the field of laser processing applications, in particular to a positioning device used for laser marking of pipe fittings. Background Art

[0002] Laser marking technology is one of the largest application areas of laser processing. Laser marking is a marking method that uses high-energy-density lasers to partially irradiate the workpiece, causing the surface material to vaporize or undergo a chemical reaction that changes color, thereby leaving a permanent mark. Laser marking can produce a variety of text, symbols, and patterns, and the character size can range from millimeters to microns, which is of special significance for product anti-counterfeiting;

[0003] Existing laser marking machines usually include a fixed table, on which the workpiece to be marked is placed, and then the laser marking machine is used to mark it;

[0004] However, there is no specific positioning and fixing device installed on the existing fixed table, and the workpiece needs to be manually aligned with the laser marking machine, resulting in uneven marking positions and marking effects of workpieces in the same batch. Even though some laser marking machines are currently equipped with fixed tables that can fix workpieces, their fixing devices have a low degree of freedom and cannot be fixed and positioned for workpieces of different batches and specifications, resulting in inconvenience in operation during marking operations. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a positioning device for laser marking of pipe fittings, so as to solve the problem in the prior art that the workpiece to be marked cannot be accurately fixed and positioned, resulting in uneven marking.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A positioning device for laser marking of pipe fittings, comprising a marking machine and a workbench, wherein the marking machine is fixed on the workbench, a positioning plate is installed on the workbench, a plurality of limiting holes are preset on the positioning plate, and the positioning device further comprises a plurality of positioning members, wherein the positioning members are installed in cooperation with the limiting holes;

[0008] The positioning member comprises a positioning portion which is installed in cooperation with the limiting hole and a fixing portion which is in contact with the wall of the pipe to be marked.

[0009] Furthermore, in the positioning member, the positioning portion is hinged to the fixing portion, the fixing portion and the positioning portion can rotate relative to each other, and are limited by bolts.

[0010] Furthermore, the fixing portion is a U-shaped member, the positioning portion is installed in the U-shaped groove of the fixing portion and is hinged to the fixing portion, and the fixing portion and the positioning portion are limited by bolts.

[0011] Furthermore, the positioning device also includes a laser positioning component, which is installed in cooperation with the positioning plate. A laser generator is preset on the laser positioning component, and the laser generator can emit fan-shaped visible light to determine the positioning accuracy of the pipe to be marked.

[0012] Further, the laser positioning component includes a first laser positioning component and a second laser positioning component;

[0013] The first laser positioning component is preset with a first laser generator, and the first laser generator is installed facing the pipe to be marked to detect the horizontal positioning accuracy of the pipe;

[0014] The second laser positioning component is preset with a second laser generator, and the second laser generator is installed on the side facing the marked pipe to detect the vertical positioning accuracy of the pipe.

[0015] Furthermore, the laser generator and the laser positioning component are slidably connected via a sliding member, and the sliding member and the laser generator are hinged.

[0016] The utility model provides a positioning device for pipe marking, a positioning plate is preset on a workbench, and the positioning piece can be installed in any limiting hole of the positioning plate to adapt to pipes of different specifications. The positioning piece has freedom in multiple directions, and can achieve a perfect fit with pipes of different specifications and shapes to achieve a fixing effect. Furthermore, a laser positioning component is provided to detect whether the pipe to be marked is accurately installed and fixed before each marking, to ensure that each marking is accurately made at the same position of the pipe, to avoid the problem of marking position deviation and uneven marking caused by manual fixation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 This is a structural schematic diagram of a positioning device for laser marking of pipe fittings according to the utility model;

[0019] Figure 2 This is a structural schematic diagram of another angle of a positioning device for laser marking of pipe fittings according to the utility model;

[0020] Figure 3 for Figure 2 A magnified image of area A;

[0021] Figure 4 This is a side view of a positioning device for laser marking of pipe fittings according to the utility model;

[0022] Figure 5 This is a schematic diagram of laser detection of a first laser generator of a positioning device for laser marking of pipe fittings according to the utility model;

[0023] Figure 6 The utility model is a schematic diagram of laser detection of a second laser generator of a positioning device for laser marking of pipe fittings.

[0024] Explanation of the accompanying drawings: 1. workbench; 2. marking machine; 3. positioning member; 31. positioning part; 32. fixing part; 4. positioning plate; 5. first laser positioning member; 51. first laser generator; 6. second laser positioning member; 61. second laser generator; 7. pipe to be marked; 8. sliding member. DETAILED DESCRIPTION

[0025] Unless otherwise defined, all technical and scientific terms used in this document have the same meaning as commonly understood by technicians in the technical field of the present invention; the terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. For example, the directions or positions indicated by terms such as "length", "width", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", and "outside" are based on the directions or positions shown in the drawings, which are only for the convenience of description and cannot be understood as limitations on the present technical solution.

[0026] The terms "including" and "having" and any variations thereof in the specification and claims of the present utility model and the above-mentioned drawings are intended to cover non-exclusive inclusions; the terms "first", "second", etc. in the specification and claims of the present utility model or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0027] In the specification and claims of the utility model and the above-mentioned drawings, when an element is referred to as being "fixed on" or "mounted on" or "disposed on" or "connected to" another element, it may be directly or indirectly located on the other element. For example, when an element is referred to as being "connected to" another element, it may be directly or indirectly connected to the other element.

[0028] In addition, the reference to "embodiment" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0029] Example

[0030] The basic principle of laser marking is that a laser generator generates a high-energy continuous laser beam, and the focused laser acts on the printing material, causing the surface material to melt or even vaporize instantly. By controlling the path of the laser on the surface of the material, the required graphic mark is formed.

[0031] Laser marking is characterized by non-contact processing. It can mark any special-shaped surface without deformation or internal stress. It is suitable for marking materials such as metal, plastic, glass, ceramic, wood, leather, etc. It can mark almost all parts (such as pistons, piston rings, valves, valve seats, hardware tools, sanitary ware, electronic components, etc.), and the mark is wear-resistant, the production process is easy to automate, and the deformation of the marked parts is small.

[0032] The laser marking positioning device disclosed in this embodiment is mainly used in the field of pipe fittings. The marking operation of pipe fittings in the workshop is the last link of the pipe fitting processing technology. Pipe fittings of different batches have different specifications, such as straight pipes, curved pipes, connecting pipes, etc., and the sizes (diameter, length, etc.) are also different. At present, the laser marking of pipe fittings mostly places the pipe fittings on a workbench and marks them by manual fixation. The operation process of this method is not completely standardized. The same pipe fitting may have different marking positions and uneven markings. In addition, there are some workbenches with built-in pipe fitting fixing devices, but such devices can generally only be used for the same batch of pipe fittings. Different workbenches are required for pipe fittings of different specifications and sizes, which is not convenient in actual operation. Based on this, this embodiment provides a positioning device for laser marking of pipe fittings, and its specific scheme is as follows:

[0033] like Figure 1 and Figure 4 As shown, a positioning device for laser marking of pipe fittings comprises a marking machine 2 and a workbench 1, wherein the marking machine 2 is fixed on the workbench 1, a positioning plate 4 is installed on the workbench 1, a plurality of limiting holes are preset on the positioning plate 4, and the positioning device further comprises a plurality of positioning members 3, wherein the positioning members 3 are installed in cooperation with the limiting holes;

[0034] The positioning member 3 includes a positioning portion 31 installed in cooperation with the limiting hole and a fixing portion 32 fitted with the wall of the pipe to be marked; the pipe 7 to be marked is placed on the positioning plate 4, and the positioning member 3 is installed in the limiting hole on the positioning plate 4. The installation process is: all positioning members 3 are installed in the limiting hole, the bottom of the positioning portion 31 is matched with the limiting hole and can rotate in the limiting hole, the positioning portion is rotated to a fixed angle, and the angle of the fixing portion 32 is adjusted to ensure that the fixing portion 32 can fit with the pipe 7 to be marked, thereby fixing the position of the pipe 7 to be marked. The installation rule is: ensure that the marking machine 1 is facing the marking area of ​​the pipe 7 to be marked.

[0035] After the marking operation, take out the pipe 7 to be marked, keep the position of the positioning member 3 unchanged, put in the next pipe 7 to be marked, adjust the fixing part 32 to fix the pipe, and then carry out the next marking operation. The positioning device can be applied to pipes of different specifications and sizes. The position of the positioning member 3 is adjusted according to the pipes of different specifications and sizes, and the angles of the positioning part 31 and the fixing part 32 are adjusted to adapt to the specifications of the pipes, so that different batches of pipes can be marked on the same workbench. Figure 1 The pipe fitting 7 to be marked is a connecting elbow. For pipe fittings of this specification, the positioning members 3 can be installed at the middle position of the inner side of the elbow, the middle position of the outer side of the elbow, and the positions near the two ends to form a triangular fixation. Alternatively, two positioning members 3 can be installed at the two ends of the elbow. In principle, it is sufficient to fix the pipe fitting 7 to be marked.

[0036] As one of the preferred embodiments, Figure 2 and Figure 3 As shown, in the positioning member 3, the positioning part 31 is hinged with the fixing part 32, the fixing part 32 and the positioning part 31 can rotate relative to each other, and are limited by bolts, the positioning part 31 can rotate in the limiting hole, and then the direction of the positioning member 31 is adjusted. After the positioning member 31 is adjusted toward the pipe 7 to be marked, the angle of the fixing part 32 is adjusted so that the fixing part 32 is close to the pipe and the pipe is locked. After the adjustment is completed, tighten the bolts.

[0037] Furthermore, the fixing portion 32 is a U-shaped piece, and the positioning portion 31 is installed in the U-shaped groove of the fixing portion 32 and is hinged to the fixing portion 32. The purpose of setting the fixing portion 32 as a U-shaped piece is that after adjustment, both sections of the U-shaped piece can fit with the pipe 7 to be marked, and the fixing effect is more reliable and stable.

[0038] As one of the preferred embodiments, Figure 1 The positioning device further comprises a laser positioning component, the laser positioning component is installed in cooperation with the positioning plate, a laser generator is preset on the laser positioning component, and the laser generator can emit fan-shaped visible light to judge the positioning accuracy of the pipe to be marked;

[0039] Specifically, the laser positioning component includes a first laser positioning component 5 and a second laser positioning component 6;

[0040] The first laser positioning component 5 is preset with a first laser generator 51, and the first laser generator 51 is installed facing the pipe 7 to be marked to detect the horizontal positioning accuracy of the pipe;

[0041] The second laser positioning component 6 is provided with a second laser generator 61 , and the second laser generator 61 is installed on the side of the marked pipe 7 to detect the vertical positioning accuracy of the pipe.

[0042] As a preferred embodiment, the laser generator and the laser positioning component are slidably connected via a sliding member 8, and the sliding member 8 and the laser generator are hinged.

[0043] When testing specifically, Figure 5 and Figure 6 As shown, after the pipe 7 to be marked is installed, the first laser generator 51 is adjusted to the height of the upper surface of the pipe by the sliding member 8, and the first laser generator 51 is adjusted to a horizontal angle to emit fan-shaped visible light (such as Figure 5 The first laser generator 51 can be adjusted to a height slightly lower than the height of the upper surface of the tube to determine whether the intersection of the two boundary lines of the fan-shaped visible light and the wall of the tube 7 to be marked is on the same horizontal plane;

[0044] The second laser generator 61 is adjusted to Figure 6 The height and angle shown can be adjusted by taking the intersection of the fan-shaped visible light and the pipe as a reference point to determine whether the pipe is fixed in accordance with the specification, for example Figure 6 As shown in , the intersection point of the two boundary lines of the fan-shaped area is exactly the lower end point of the two ends of the pipe fitting, which means that the pipe fitting has been installed in accordance with the specifications.

[0045] Before the marking operation, each pipe fitting is installed and tested according to the steps described in the above embodiment to ensure that the marking position of each pipe fitting is completely consistent to avoid uneven marking positions. For the same batch of pipe fittings, there is no need to readjust the positioning member 3 and the laser positioning component after the first adjustment. Only the pipe fitting needs to be replaced. When it is necessary to replace batches of pipe fittings of different specifications, the position and angle of the positioning member 3 are adjusted to adapt to the corresponding pipe fitting, and then the position and angle of the laser positioning component are adjusted.

[0046] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. A positioning device for laser marking of pipe fittings, comprising a marking machine and a workbench, characterized in that: The marking machine is fixed on the workbench, a positioning plate is installed on the workbench, a plurality of limiting holes are preset on the positioning plate, and the positioning device further comprises a plurality of positioning members, and the positioning members are installed in cooperation with the limiting holes; The positioning member comprises a positioning portion which is installed in cooperation with the limiting hole and a fixing portion which is in contact with the wall of the pipe to be marked.

2. A positioning device for laser marking of pipes according to claim 1, characterized in that: In the positioning member, the positioning portion is hinged to the fixing portion, and the fixing portion and the positioning portion can rotate relative to each other and are limited by bolts.

3. A positioning device for laser marking of pipes according to claim 2, characterized in that: The fixing part is a U-shaped part, the positioning part is installed in the U-shaped groove of the fixing part and is hinged to the fixing part, and the fixing part and the positioning part are limited by bolts.

4. A positioning device for laser marking of pipes according to claim 1, characterized in that: The positioning device also includes a laser positioning component, which is installed in cooperation with the positioning plate. A laser generator is preset on the laser positioning component, and the laser generator can emit fan-shaped visible light to determine the positioning accuracy of the pipe to be marked.

5. A positioning device for laser marking of pipes according to claim 4, characterized in that: The laser positioning component includes a first laser positioning component and a second laser positioning component; The first laser positioning component is preset with a first laser generator, and the first laser generator is installed facing the pipe to be marked to detect the horizontal positioning accuracy of the pipe; The second laser positioning component is preset with a second laser generator, and the second laser generator is installed on the side facing the marked pipe to detect the vertical positioning accuracy of the pipe.

6. A positioning device for laser marking of pipes according to claim 5, characterized in that: The laser generator and the laser positioning component are slidably connected via a sliding member, and the sliding member and the laser generator are hinged.

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