RU132020U1 - INSTALLATION OF LASER MARKING OF PIPES - Google Patents

Abstract

1. Installation of laser marking of pipes, containing a laser, a lens and a computer, characterized in that the installation is equipped with a bed with mounted on the bed means of clamping and rotation of the pipe, a fiber laser, fiber deliveries of a laser beam, optical heads mounted to rotate around and move across and along the axis with the help of servomotors, the number of optical heads corresponds to the number of applied annular markings, and the reader is mounted on a mill not at the place where the marked pipe exits the marking area. 2. Installation according to claim 1, characterized in that a WEB camera is used as a ring code reader, both a stationary reader that is connected to a computer and a smartphone into which software and a database of pipes are downloaded and is a non-stationary reader .

Description

The utility model relates to the processing of products such as bodies of revolution and marking on them for subsequent identification and can be used, for example, for oil assortment pipes (tubing, casing, drill, oil and gas and other pipes) that are used in oil fields for gas production and oil product.

The operation of the installation is based on the ability of the laser beam formed by the fiber laser to form ring codes when applied to the outer surface of the product.

State of the art

In the description of the invention to patent RU 2115167, cl. G07D 7/20, publ. October 20, 2008 [1], a device for identifying products using a machine-readable label is disclosed, for this purpose, an image of each labeled product is recorded, the presence and position of each characteristic label marking in each image is determined using machine vision algorithms, and the location of each information field, determine the rotational orientation of each label and detect and decode information-bearing signs to identify each product. The disadvantage of this device is the inability to read the label during movement due to its rotation together with the product and the loss of information signs after using the product.

From the description of the invention to patent RU 2336571, cl. B21B 15/00, publ. September 20, 2004 [2], there is also known a method and apparatus for applying unique composite characters or markings to a sequence of products in which each unique composite character contains two or more characters. At least a portion of each of the characters may be located together in a predetermined location on the product, and such a joint arrangement is unique or individual for each composite character for each product. From a composite character, you can derive a code (for example, an alphanumeric code), which is stored in the database. You can then access the code to identify or verify the product with a mark. The disadvantage of this technical solution is the impossibility of identifying each composite sign in motion, since it is necessary to position uniquely located composite characters and difficulties in reading after using the product in front of the reader.

So from the description of the invention to patent RU 2347293, cl. G21C 21/02, publ. 02.20.2009, [3] it follows that the code is formed by a sequence of marking symbols in the form of simple geometric signs or figures. In this case, signs or figures are used that provide unambiguous automated recognition of their rotation angle relative to the initial position. An identification code is formed with the participation of oriented along the marking line at various fixed angles of the indicated signs or figures. The code is applied to the annular surface area evenly and repeatedly at least three times.

The disadvantage of this method of applying marking symbols is the impossibility of reading geometric shapes along the entire annular section in the process of moving a cylindrical object in the axial direction and the complexity of forming geometric signs or figures with different angles of rotation. Another disadvantage is that the figures are in the form of recesses and after the operation of the product, for example, in an oil well, they become clogged with the well product and it becomes impossible to identify the product.

The closest analogue in technical essence and the achieved result, you can take the installation of laser marking, disclosed in the description of the invention to patent RU 2457522, cl. G02B 26/08, B44B 3/00. publ. 07/27/2012. The setup contains sequentially located along the beam and optically coupled laser, a collimator, acousto-optical and piezoceramic deflectors, a lens, a coordinate table, and also a computer. The lens is aimed at the marked product. The coordinate table consists of a movable part and a drive. One of the computer inputs is the installation input, other inputs are connected to the outputs of the piezoelectric ceramic deflector and coordinate table drive, and the outputs are connected to the inputs of the acousto-optical and piezoelectric ceramic deflectors and coordinate table. An electromagnetic deflector is installed between the piezoceramic deflector and the lens. The input and output of the electromagnetic deflector are connected to the corresponding input and output of the computer. A box with marked products is fixed on the moving part of the coordinate table. Products are located in the focal plane of the lens. The box contains recesses, the size of which corresponds to the dimensions of the marked products. A single-axis table drive is used.

The disadvantage of this installation is the low reliability due to the large number of nodes transmitting laser radiation into the working area. The presence of a coordinate table, even with the provision of movement along one coordinate, reduces the accuracy of obtaining marking codes. The unit is not suitable for marking large products that, by their dimensions and weight, do not fit in the box. Laser marking performance for applying multiple characters when moving a marked product using a coordinate table is very low, especially for marking pipes that are longer than 10 meters and weigh more than 100 kg.

In the process of developing the proposed technical solution, the authors were faced with the task of developing a device that ensures ease of marking, their safety after use, and the ability to identify each product using simple readers, including smartphones equipped with a WEB camera. At the same time, the desire to increase the reliability of the marking installation and increase productivity was taken into account.

The technical result of the utility model is to increase the marking performance, improve the quality of the applied marking, ensure its readability and product identification by available means.

The specified technical result is achieved by using a laser marking system for pipes containing a laser, a lens, and a computer, characterized in that the installation is equipped with a bed with means for clamping and rotating the pipe mounted on the bed, a fiber laser, fiber deliveries of a laser beam, and optical heads mounted with the possibility rotate around and move across and along the axis using servomotors, the number of optical heads corresponds to the number of applied ring marks ovochnyh characters, and a reading device mounted on the frame at the exit site of marking of the pipe marking zone.

As a ring code reader, a WEB camera can be used, either a stationary reader that is connected to a computer or a smartphone into which software and a pipe database are downloaded and is a non-stationary reader.

The essence of the utility model is illustrated by the following drawings, which show the most preferred embodiment of the utility model.

Figure 1. General view of the installation of laser marking of pipes (diagram).

The nodes and details of the proposed installation in the description text and in the drawings are indicated by the following numbers:

1. Bed.

2. The mechanism of rotation of the pipe.

3. Clamping device.

4. Fiber laser.

5. Fiber delivery of laser beams.

6. Optical heads.

7. Servomotors.

8. The lenses.

9. The computer.

10. Mobile emphasis.

11. Reader.

12. The pipe.

13. Roller.

14. The transport system.

15. Electrical cabinet.

As shown in figure 1, the basis of the installation of laser marking is the frame 1. On the frame 1 has a mechanism for rotating the pipe 2 with a clamping device 3 for pipes. Separately installed fiber laser 4, which is equipped with fiber deliveries of laser beams 5 to the optical heads 6, which are mounted on the frame 1 with the ability to rotate along the axis and move along and across the axis using servomotors 7. The laser beam is transmitted through the lens 8. The installation has a system automatic control using a computer 9. A swivel stop 10, a reader 11, which can be used as a WEB-camera or a smartphone, and a roller table 13 are also mounted on the bed 1. and pipe 12 into the treatment zone is the transport system 14. For providing power control cabinet 15 is designed.

The proposed installation of laser marking of pipes works as follows.

The pipe 12 is transported through the transport system 14 to the pivot stop 10 and clamped by the clamping device 3. From the control cabinet 15, the voltage is applied to the fiber laser 4, the rotation mechanism of the pipe 2 and the computer 9, which gives the command to turn on the rotation of the pipe and supply laser radiation via fiber deliveries laser beams 5 to the optical heads 6, which through the lens 8 in accordance with a given program of the computer 4 form ring codes on the tube 12 by moving the optical heads 6 from the servomotors 8. Moreover, the shape, p measurements, the distance between the codes, their reflectivity when reading, are provided in the widest ranges (oblique lines, zigzag, various signs, etc.) by means of software using the commands entered into the computer 4. After the formation of the ring codes, the pipe rotation mechanism 2 stops, the clamping device 3 is unclenched, the pivot stop 10 is deflected and the pipe is moved using the rolling table 13 along the axis to the discharge. At the moment when the pipe moves and enters the zone of the reader 11, the reader 11 reads the generated code and transmits this information to the computer database 9. The unit is ready to receive the next pipe for applying ring codes and entering the received information into the computer database. Codes applied by a fiber laser have a nano-structure on the surface that has high corrosion resistance and long-term preservation of the applied code, and if the pipe is operated in an aggressive environment, corrosion protection is additionally applied to the applied ring codes. To read the ring codes after operating the pipes, it is enough to clean the marking place and use the WEB camera to identify the pipe.

The manufactured pilot sample of the proposed installation during testing showed the possibility of obtaining ring codes marking on oil assortment pipes, ensuring high accuracy of their reading with a WEB camera in the process of identifying each pipe, the process productivity increased by 5 times due to the simultaneous use of several optical heads.

Claims (2)

1. Installation of laser marking of pipes, containing a laser, a lens and a computer, characterized in that the installation is equipped with a bed with mounted on the bed means of clamping and rotation of the pipe, a fiber laser, fiber deliveries of a laser beam, optical heads mounted to rotate around and move across and along the axis with the help of servomotors, the number of optical heads corresponds to the number of applied annular markings, and the reader is mounted on a mill not at the place where the marked pipe exits the marking area. 2. Installation according to claim 1, characterized in that a WEB camera is used as a ring code reader, both a stationary reader that is connected to a computer and a smartphone into which software and a database of pipes are downloaded and is non-stationary reader device.

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