Steel pipe length on-line automatic measuring and clamping cutting system

Abstract

The utility model provides a steel pipe length on-line automatic measuring and cutting system, which comprises a fixed mounting rack, a length measuring mechanism, a pipe cutting machine, a measuring switch and a controller, the length measuring mechanism is connected with the fixed mounting rack through a slide rail, the length measuring mechanism can slide along the slide rail, the pipe cutting machine is arranged on one side of a steel pipe output rail, and the measuring switch is connected with the controller. The measuring switch is arranged on the length measuring mechanism, and the length measuring mechanism, the pipe cutting machine and the measuring switch are all in electric signal connection with the controller. The length of the steel pipe can be automatically measured on line through the length measuring mechanism, and the steel pipe can be clamped and cut according to the set length through cooperation of the pipe cutting machine, the measuring switch and the controller; as the bracket can move along the slide rail, the length of different steel pipes can be measured and cut. The laser range finder is high in measurement precision, when the servo motor drives the support to move to a set position, the servo motor has a self-locking function, stability of the measurement switch and the reflecting plate is guaranteed, and the device can adapt to interference of the field environment of the steel pipe production line.

Description

Technical Field

[0001] The utility model belongs to the technical field of spiral submerged arc welded pipe production, and particularly relates to an online automatic measurement and cutting system for the length of steel pipes. Background Art

[0002] During the production process of spiral submerged arc welded pipes, it is necessary to measure their lengths. The set cutting length of the existing steel pipe units is fixed. However, when pipe manufacturing enterprises execute contracts that do not allow the delivery of butt-welded pipes, the total lengths of the steel pipes produced from steel coils with different weights are different. The average length of each steel pipe is different, which causes difficulties for the on-site operators when setting the fixed length of the steel pipes.

[0003] The technical solution disclosed in the patent CN202022900373.8, an automatic steel pipe length measuring device, is as follows: It includes a support column. A first cross column is fixedly connected to the side wall of the support column. A first motor is fixedly connected to the inner wall on the right side of the first cross column. The output end of the first motor is fixedly connected to a first lead screw. A second cross column is fixedly connected to the side wall of the support column and above the first cross column. A second motor is fixedly connected to the inner wall on the left side of the second cross column. The output end of the second motor is fixedly connected to a second lead screw. A second connecting block is arranged on the side wall of the second lead screw. A fixed frame is fixedly connected to the lower surface of the second connecting block. A scale line is arranged on the front surface of the first cross column. A distance measuring sensor is arranged on the front surface of the second cross column. The infrared distance measuring instrument is electrically connected to the distance measuring sensor. By setting the first motor and the first lead screw, this device can move the infrared distance measuring instrument, which is convenient for measuring the length of the steel pipe. However, it is not applicable to the dynamic production process and cannot cooperate with the pipe cutting machine for cutting. Content of the Utility Model

[0004] The purpose of the utility model is to provide an online automatic measurement and cutting system for the length of steel pipes, so as to overcome the above-mentioned technical problems existing in the prior art.

[0005] Therefore, the technical solution provided by the utility model is as follows:

[0006] An online automatic measurement and cutting system for the length of steel pipes includes a fixed mounting frame, a length measuring mechanism, a pipe cutting machine, a measurement switch and a controller. The length measuring mechanism and the fixed mounting frame are connected by a slide rail. The length measuring mechanism can slide along the slide rail. The pipe cutting machine is arranged on one side of the steel pipe output track. The measurement switch is arranged on the length measuring mechanism. The length measuring mechanism, the pipe cutting machine and the measurement switch are all electrically connected to the controller;

[0007] The measurement switch is used to send a signal to the controller when the steel pipe reaches the set length. The controller controls the clamping wheel of the pipe cutting machine to rise, so that the steel pipe drives the pipe cutting machine to move forward synchronously, and the pipe cutting machine cuts the pipe through the cutting gun.

[0008] The length measuring mechanism includes a bracket, a moving base, a laser rangefinder, a servo motor and a reflector. The bracket is connected to a slide rail through the moving base. The side and bottom surface of the moving base are slidably connected to the slide rail. The laser rangefinder is installed at the end of the slide rail. The servo motor is used to drive the moving base. The reflector is fixed on the bracket and cooperates with the laser rangefinder. The measuring switch is installed on the bracket through a height adjusting member, and the measuring switch is arranged above the reflector.

[0009] The moving base and the servo motor are connected by a belt. Both the servo motor and the laser rangefinder are electrically connected to a controller, and the controller is electrically connected to a digital display.

[0010] The height adjusting member includes a cross bar, a cross buckle and a setscrew. The cross bar is connected to the bracket through the cross buckle and the setscrew. A plurality of screw holes are formed in the cross bar, and the measuring switch is connected to the cross bar through an adjusting bolt.

[0011] The measuring switch is an optoelectronic switch or a low-voltage contact switch.

[0012] The cross bar is made of insulating wood, and the bracket is a square tube or a round tube.

[0013] A limit switch is provided at the other end of the slide rail, and the limit switch is electrically connected to the controller.

[0014] The beneficial effects of the present utility model are:

[0015] The on-line automatic measurement and cutting system for steel pipe lengths provided by the present utility model can automatically measure the length of steel pipes on-line through the length measuring mechanism. Through the cooperation of the pipe cutting machine, the measuring switch and the controller, the cutting of the set length of the steel pipe is realized. Since the bracket can move along the slide rail, the measurement and cutting of different steel pipe lengths are realized. The use of a laser rangefinder has high measurement accuracy. When the servo motor drives the bracket to move to the set position, the servo motor has a self-locking function, ensuring the stability of the measuring switch and the reflector, and can adapt to the interference of the on-site environment of the steel pipe production line.

[0016] In this system, the measuring switch can be adjusted up and down along the bracket through the height adjusting member, and can be adjusted horizontally through the adjusting bolt to suit steel pipes of different diameter specifications, so that the measuring switch irradiates the steel pipe in the horizontal direction.

[0017] The present utility model can be applied to the on-line cutting work in the production and manufacturing process of various spiral welded pipes; it can also be used for the fixed-length cutting work in other machining operations, filling the technical gap in the industry and having high popularization and application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of an embodiment of the present utility model;

[0019] Figure 2 is a side view of an embodiment of the present utility model;

[0020] Figure 3 is a schematic layout diagram of a servo motor and a slide rail;

[0021] Figure 4 is a schematic diagram of on-site application of the present utility model.

[0022] In the figure: 1, photoelectric switch; 2, reflector; 3, bracket; 4, fixed mounting frame; 5, slide rail; 6, laser rangefinder; 7, servo motor; 8, belt; 9, height adjuster; 10, limit switch; 11, pipe cutting machine; 12, steel pipe; 13, cutting torch; 14, clamping wheel. Specific Embodiment

[0023] The following specific embodiments illustrate the embodiments of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification.

[0024] Now, refer to the accompanying drawings to introduce the exemplary embodiments of the present utility model. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to disclose the present utility model in detail and completely, and to fully convey the scope of the present utility model to those skilled in the art. The terms in the exemplary embodiments shown in the drawings are not limitations on the present utility model. In the drawings, the same unit / element uses the same reference numeral.

[0025] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the ordinary meaning understood by those skilled in the art. In addition, it can be understood that the terms defined in the commonly used dictionary should be understood as having a meaning consistent with the context of their related fields, and should not be understood as idealized or overly formal meanings. Embodiment

[0026] The present utility model provides an on-line automatic measurement and cutting system for the length of steel pipes, including a fixed mounting frame 4, a length measurement mechanism, a pipe cutting machine 11, a measurement switch, and a controller. The length measurement mechanism and the fixed mounting frame 4 are connected by a slide rail, the length measurement mechanism can slide along the slide rail, the pipe cutting machine 11 is arranged on one side of the output track of the steel pipe 12, the measurement switch is arranged on the length measurement mechanism, and the length measurement mechanism, the pipe cutting machine 11, and the measurement switch are all electrically connected to the controller;

[0027] The measuring switch is used to send a signal to the controller when the steel pipe 12 reaches the set length. The controller controls the clamping wheel 14 of the pipe cutting machine 11 to rise, so that the steel pipe 12 drives the pipe cutting machine 11 to move forward synchronously, and the pipe cutting is carried out by the cutting gun 13 of the pipe cutting machine 11.

[0028] This on-line automatic measurement and clamping cutting system for the length of steel pipes provided by the utility model can automatically measure the length of the steel pipe 12 on-line through the length measuring mechanism, and realize the clamping cutting of the set length of the steel pipe 12 through the cooperation of the pipe cutting machine 11, the measuring switch and the controller; since the bracket 3 can move along the slide rail, the measurement and clamping cutting of different lengths of the steel pipe 12 are realized. Embodiment

[0029] On the basis of Embodiment 1, this embodiment provides an on-line automatic measurement and clamping cutting system for the length of steel pipes, as Figure 1 shown. The length measuring mechanism includes a bracket 3, a moving base, a laser rangefinder 6, a servo motor 7 and a reflector 2. The bracket 3 is connected to the slide rail through the moving base. The side and bottom surfaces of the moving base are slidably connected to the slide rail. The laser rangefinder 6 is installed at the end of the slide rail. The servo motor 7 is used to drive the moving base. The reflector 2 is fixed on the bracket 3 and cooperates with the laser rangefinder 6. The measuring switch is installed on the bracket 3 through a height adjusting member 9, and the measuring switch is arranged above the reflector 2.

[0030] The reflector 2 is installed on the bracket 3 for reflecting the laser signal of the laser rangefinder 6. The fixed installation frame is used to fix the slide rail, the laser rangefinder 6 and the servo motor 7. The servo motor 7 drives the bracket 35 to move horizontally along the slide rail. The laser rangefinder 6 is installed at the end of the slide rail and irradiates the reflector 2 on the bracket 3 to provide a length signal. Embodiment

[0031] On the basis of Embodiment 2, this embodiment provides an on-line automatic measurement and clamping cutting system for the length of steel pipes. The moving base and the servo motor 7 are connected by a belt 8. Both the servo motor 7 and the laser rangefinder 6 are electrically connected to the controller, and the controller is electrically connected to a digital display.

[0032] As Figure 2 、 Figure 3 shown, the moving base is connected to the belt 8. When the servo motor 7 is started, the moving base is driven by the belt 8 to move linearly along the slide rail, so that the bracket 3 connected to the moving base moves linearly along the slide rail, adjusting the distance between the reflector 2 and the laser rangefinder 6 to realize the length setting of steel pipes 12 of different lengths.

[0033] Among them, the reflector 2 is fixed on the bracket 3 using M6 bolts. The slide rail is fixed to the fixed installation bracket 3 in a hanging manner using M6 bolts. Embodiment

[0034] Based on Embodiment 2, this embodiment provides an on-line automatic measurement and cutting system for the length of steel pipes. As Figure 2 shown, the height adjusting member 9 includes a cross bar, a cross buckle and a setscrew. The cross bar is connected to the bracket 3 through the cross buckle and the setscrew. A plurality of screw holes are formed in the cross bar, and the measuring switch is connected to the cross bar through an adjusting bolt.

[0035] By adjusting the height of the vertical opening of the cross buckle connected to the bracket 3 vertically and horizontally adjusting through the adjusting bolt, different specifications of steel pipes 12 can be adapted to ensure that the measuring switch is horizontally irradiated on the steel pipe 12, so as to accurately provide a signal for cutting the steel pipe at a fixed length.

[0036] The specific use process is as follows:

[0037] Step 1) The servo motor 7 is started to drive the bracket 3 to move along the slide rail. During this process, the laser rangefinder 6 irradiates the reflector 2, and the controller monitors the length value in real time and displays it on the digital display. When the length value reaches the set length of the steel pipe 12, the controller controls the servo motor 7 to shut down;

[0038] Step 2) The steel pipe 12 advances. When the pipe end of the steel pipe 12 triggers the measuring switch, the measuring switch sends a signal to the controller. After receiving the signal, the controller controls the clamping wheel 14 of the pipe cutting machine 11 to rise, so that the steel pipe 12 drives the pipe cutting machine 11 to advance synchronously, and the controller controls the cutting gun 13 of the pipe cutting machine 11 to cut the pipe;

[0039] Step 3) After the pipe cutting is completed, the pipe cutting machine 11 returns to the initial position, and step 2) is repeated to perform on-line automatic measurement and automatic clamping and cutting on the remaining steel pipes 12.

[0040] As Figure 4 shown, the fixed mounting frame 4 is installed on the side of the output track of the steel pipe 12, and the installation direction is parallel to the advancing direction of the steel pipe 12.

[0041] When the specification of the steel pipe 12 changes, the vertical position of the measuring switch is adjusted up and down through the height adjusting member 9, and the horizontal position of the measuring switch is adjusted through the adjusting bolt, so that the photoelectric switch 1 faces the steel pipe 12 to receive the signal.

[0042] The controller can be installed at the pipe cutting station, and the operator manipulates the controller to complete the setting of the fixed length of the steel pipe 12. This embodiment takes the setting of the fixed length of the steel pipe 12 from 11.5 m to 13.5 m as an example.

[0043] As Figure 4As shown in the figure, the fixed mounting bracket 3 is installed on the output track bridge of the steel pipe 12, and the installation direction is parallel to the advancing direction of the steel pipe 12. Determination of the installation reference: When the pipe cutting machine 11 is in the starting position, taking 11.5 m along the advancing direction of the steel pipe 12 by the clamping wheel 14 as the reference point, the bracket 3 is at the reference point.

[0044] When the length of the steel pipe 12 is set to 12.04 m, the operator turns on the controller, and the controller controls the servo motor 7 to start, driving the bracket 3 to move along the slide rail. During this process, the laser rangefinder 6 irradiates the reflector 2, and the length value is displayed on the digital display in real time. When the value on the display is 12.04 m, the controller controls the servo motor 7 to stop, and the length setting of the steel pipe 12 is completed.

[0045] After the setting is completed, production starts, and the steel pipe 12 starts to advance. When the steel pipe 12 advances to 12.04 m, the measurement switch (photoelectric switch 1) is triggered. The pipe cutting machine 11 receives the signal and raises the clamping wheel 14. At this time, the length from the clamping wheel 14 to the end of the steel pipe 12 is 12.04 m, and the online measurement of the steel pipe 12 length and the feedback of the fixed-length signal for automatic clamping and cutting are completed. Then the clamping wheel 14 raises and the steel pipe 12 drives the pipe cutting machine 11 to advance synchronously. The cutting gun 13 is perpendicular to the clamping wheel 14, and the cutting gun 13 is started to cut the pipe. The length of the cut steel pipe 12 is 12.04 m. Embodiment

[0046] On the basis of Embodiment 1, this embodiment provides an online automatic measurement and clamping and cutting system for the length of a steel pipe, and the measurement switch is the photoelectric switch 1 or a low-voltage contact switch.

[0047] The response speed of the photoelectric switch 1 or the low-voltage contact switch is 0.01 second, and it can accurately provide the fixed-length cutting signal for the steel pipe. Embodiment

[0048] On the basis of Embodiment 4, this embodiment provides an online automatic measurement and clamping and cutting system for the length of a steel pipe. The cross bar is made of insulating wood, and the bracket 3 is a square pipe or a round pipe.

[0049] In this embodiment, the bracket 3 is a 20*20*600 mm square pipe, and the cross bar is a D25*600 mm insulating wood. Embodiment

[0050] On the basis of Embodiment 1, this embodiment provides an online automatic measurement and clamping and cutting system for the length of a steel pipe. The other end of the slide rail is provided with a limit switch 10, and the limit switch 10 is electrically connected to the controller.

[0051] When the bracket 3 moves to the end along the slide rail, the limit switch 10 sends a signal to the controller, and the controller controls the servo motor 7 to stop, thereby preventing the bracket 3 from disengaging from the slide rail.

[0052] The above examples are only illustrative of the present utility model and do not constitute a limitation on the scope of protection of the present utility model. Any design identical or similar to the present utility model falls within the scope of protection of the present utility model.

Claims

1. An online automatic measurement and cutting system for steel pipe length, characterized by: It includes a fixed mounting frame, a length measuring mechanism, a pipe cutting machine, a measuring switch and a controller. The length measuring mechanism and the fixed mounting frame are connected by a slide rail. The length measuring mechanism can slide along the slide rail. The pipe cutting machine is arranged on one side of the steel pipe output track. The measuring switch is arranged on the length measuring mechanism. The length measuring mechanism, the pipe cutting machine and the measuring switch are all connected to the controller by electrical signals. The measuring switch is used to send a signal to the controller when the steel pipe reaches a set length. The controller controls the clamping wheel of the pipe cutting machine to rise, so that the steel pipe drives the pipe cutting machine to move forward synchronously, and the pipe is cut by the cutting gun of the pipe cutting machine.

2. The online automatic measurement and cutting system for steel pipe length according to claim 1 is characterized by: The length measuring mechanism comprises a bracket, a movable base, a laser rangefinder, a servo motor and a reflector. The bracket is connected to a slide rail via the movable base. The movable base is slidably connected to the side and bottom surfaces of the slide rail. The laser rangefinder is mounted at the end of the slide rail. The servo motor is used to drive the movable base. The reflector is fixed on the bracket and cooperates with the laser rangefinder. The measuring switch is mounted on the bracket via a height adjusting member. The measuring switch is arranged above the reflector.

3. The online automatic measurement and cutting system for steel pipe length according to claim 2 is characterized by: The mobile base and the servo motor are connected through a belt, the servo motor and the laser rangefinder are both connected to the controller by electrical signals, and the controller is electrically connected to a digital display.

4. The online automatic measurement and cutting system for steel pipe length according to claim 2 is characterized by: The height adjustment member comprises a cross bar, a cross buckle and a top screw, the cross bar is connected to the bracket via the cross buckle and the top screw, a plurality of screw holes are provided on the cross bar, and the measuring switch is connected to the cross bar via an adjusting bolt.

5. A steel pipe length online automatic measurement and cutting system according to any one of claims 1 to 4, characterized in that: The measuring switch is a photoelectric switch or a low-voltage contact switch.

6. The online automatic measurement and cutting system for steel pipe length according to claim 4 is characterized by: The crossbar is made of insulating wood, and the bracket is made of a square tube or a round tube.

7. A steel pipe length online automatic measurement and cutting system according to any one of claims 2 to 4, characterized in that: A limit switch is arranged at the other end of the slide rail, and the limit switch is connected with the controller by electrical signal.

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