Welding seam positioning device for stainless steel pipe fitting

Abstract

The utility model discloses a stainless steel pipe fitting welding seam positioning device which comprises a base, a welding seam positioning device, a welding seam positioning device, a welding seam positioning device, a welding seam positioning device, a welding seam positioning device and a welding seam positioning device. An output shaft of the rotary servo motor extends in the length direction of the base; the clamp is connected with an output shaft of the rotary servo motor, and the clamp is used for grabbing the pipe fitting; and a magnet moving in the vertical direction is arranged on the magnet placing mechanism, and the magnet is located below the pipe fitting. The welding seam positioning device provided by the utility model can be used for detecting and positioning the welding seam of the pipe fitting, so that the welding seam is positioned on the inner side of the bent pipe and can be avoided in the subsequent process of bending the pipe fitting into the bent pipe, and the difficulty of subsequent grinding and polishing operation on the outer side of the bent pipe is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe processing equipment, and more specifically, to a weld positioning device for a stainless steel pipe. Background Art

[0002] The production process for stainless steel pipe bends involves cutting, bending, and polishing. In the past, stainless steel pipe fittings were not clearly positioned during the bending process, and the cut pipes were bent directly. However, since stainless steel pipe fittings are made from bent and welded steel plates, a weld seam exists, and the material at the weld seam is different from that at other locations. This creates difficulties in the subsequent polishing process. During polishing, workers polish the bend at the bend. If the weld seam is located on the outside of the bend rather than the inside, the weld seam needs to be polished, which increases the difficulty for workers.

[0003] Therefore, it is urgent to design a weld positioning device to avoid the weld when the pipe is bent, thereby reducing the difficulty of the subsequent grinding and polishing process. Utility Model Content

[0004] An object of the present invention is to solve at least the above problems and to provide at least the advantages to be described below.

[0005] Another purpose of the present invention is to provide a stainless steel pipe weld positioning device, which can detect and locate the weld, locate the weld to the bottom, avoid the weld when the pipe is bent, and reduce the difficulty of the subsequent grinding and polishing process.

[0006] In order to achieve these purposes and other advantages according to the present invention, a stainless steel pipe weld positioning device is provided, which includes:

[0007] A base, on which a pipe placement mechanism is provided, and the pipe is placed on the pipe placement mechanism along the length direction of the base;

[0008] a rotary servo motor slidably disposed on the base along the length direction of the base, wherein the output shaft of the rotary servo motor extends along the length direction of the base;

[0009] a clamp connected to the output shaft of the rotary servo motor, the clamp being used to grasp the pipe;

[0010] The magnet placement mechanism is arranged between the clamp and the pipe placement mechanism. The magnet placement mechanism is provided with a magnet that moves in a vertical direction, and the magnet is located below the pipe.

[0011] Preferably, the stainless steel pipe weld positioning device further includes

[0012] a sensor for detecting displacement of the magnet in a vertical direction;

[0013] A controller is connected to the sensor and the rotary servo motor.

[0014] Preferably, the stainless steel pipe weld positioning device further comprises a slide rail which is slidably arranged at the bottom of the base along the length direction of the base, and the rotary servo motor is arranged on the slide rail.

[0015] Preferably, the stainless steel pipe weld positioning device also includes a first mounting seat, which is an L-shaped structure, and the horizontal edge of the first mounting seat is provided with a slider, which is slidably arranged on the slide rail, and the vertical edge of the first mounting seat is perpendicular to the length direction of the base; the rotary servo motor is arranged on one side of the vertical edge of the first mounting seat, and the clamp is arranged on the other side of the vertical edge of the first mounting seat, and the output shaft of the rotary servo motor moves through the vertical edge of the first mounting seat and is connected to the clamp.

[0016] Preferably, the stainless steel pipe weld positioning device further includes a cylinder, which is arranged on the base through an L-shaped second mounting seat, and the piston rod of the cylinder extends along the length direction of the base and is connected to the vertical edge of the first mounting seat.

[0017] Preferably, in the stainless steel pipe weld positioning device, the pipe placement mechanism includes two third mounting seats spaced apart along the length direction of the base, and a curved placement area is provided on the top of each third mounting seat.

[0018] Preferably, in the stainless steel pipe weld positioning device, the magnet placement mechanism includes a fourth mounting seat provided on the base, a placement groove is provided on the top of the fourth mounting seat, the magnet is placed in the placement groove, and the sensor is provided in the placement groove.

[0019] Preferably, in the stainless steel pipe weld positioning device, the clamp is a pneumatic clamp.

[0020] The utility model has at least the following beneficial effects:

[0021] The stainless steel pipe weld positioning device provided by the utility model detects the weld position according to the characteristic that the material of the weld position and other positions are different, and thus the magnetic force thereof is also different. First, the stainless steel pipe is cut and placed in the pipe placement area. Then, the clamp is moved along the length direction of the base to grab the stainless steel pipe. The servo motor is started to rotate the pipe. When the magnet is just sucked up by the pipe, the weld position of the pipe is located directly below the pipe. The pipe stops rotating, the clamp is released, and the pipe is placed in the pipe placement area according to its original position. At this time, the weld is at the bottom. The manipulator for the pipe bending operation grabs the pipe to perform the pipe bending operation so that the weld is located on the inside of the bent pipe. This can achieve bending by avoiding the weld, thereby reducing the difficulty of the subsequent grinding and polishing process on the outside of the bent pipe.

[0022] Other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural schematic diagram of a stainless steel pipe weld positioning device described in one technical solution of the present utility model;

[0024] Figure 2 This is a schematic structural diagram of a stainless steel pipe weld positioning device described in another technical solution of the present invention;

[0025] Figure 3 This is a structural diagram of a magnet placement mechanism in another technical solution of the present invention.

[0026] Explanation of the accompanying drawings: 1-base; 11-slide rail; 2-rotary servo motor; 21-first mounting seat; 3-clamp; 31-air claw; 41-third mounting seat; 42-placement area; 5-magnet placement mechanism; 51-placement slot; 52-magnet; 6-cylinder; 7-photoelectric switch sensor; 81-inner rod; 82-outer rod; 83-spring. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0028] It should be understood that terms such as “having”, “including” and “comprising” used herein do not preclude the existence or addition of one or more other elements or combinations thereof.

[0029] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials can be obtained from commercial channels unless otherwise specified.

[0030] In the description of the present invention, the terms "horizontal", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0031] like Figures 1-3 As shown, the utility model provides a stainless steel pipe weld positioning device, which includes:

[0032] A base 1 is provided with a pipe placement mechanism, and the pipes are placed on the pipe placement mechanism along the length direction of the base 1;

[0033] a rotary servo motor 2 slidably disposed on the base 1 along the length direction of the base 1 , wherein the output shaft of the rotary servo motor 2 extends along the length direction of the base 1 ;

[0034] A clamp 3 connected to the output shaft of the rotary servo motor 2, the clamp 3 being used to grasp the pipe;

[0035] A magnet placement mechanism 5 is provided between the fixture and the pipe placement mechanism. The magnet placement mechanism 5 is provided with a magnet that moves in a vertical direction and is located below the pipe;

[0036] a sensor for detecting displacement of the magnet in a vertical direction;

[0037] A controller is connected to the sensor and the rotary servo motor 2 .

[0038] In the above technical solution, the utility model provides a stainless steel pipe weld positioning device, which is used for pipes made of rolled sheet metal sheets. The weld positioning device provided by the utility model can be used to detect and position the welds of the pipes, so that in the subsequent bending of the pipes into elbows, the welds are located on the inner side of the elbows, avoiding the welds and reducing the difficulty of subsequent grinding and polishing operations on the outer side of the elbows.

[0039] The stainless steel pipe weld positioning device provided by the present invention includes a base 1, on which a pipe placing mechanism is provided, and the pipe to be detected and positioned with the weld is placed in the pipe placing area 42 along the length direction of the base 1; a rotary servo motor 2 is provided on the base 1 for sliding along its length direction, and its output shaft extends along the length direction of the base 1, and the output shaft of the rotary servo motor 2 is provided with a clamp 3, and the clamp 3 is used to grab the pipe on the pipe placing mechanism, and the rotary servo motor 2 is started to drive the clamp 3 and the pipe to rotate around the axis of the pipe. A magnet placing mechanism 5 is provided between the pipe placing mechanism and the clamp 3, which is used to place a magnet, and the magnet can move in the vertical direction on the magnet placing mechanism 5. The magnet placing mechanism 5 is located below the pipe, and before the weld is positioned, the magnet is located below the pipe, and during the weld positioning operation, the pipe rotates around its own axis. When the pipe When the weld is at the bottom position, the magnet and the weld correspond to each other and drive the magnet upward under the action of magnetic attraction. The rotating servo motor stops rotating, and the pipe is positioned in the state where the weld is at the bottom. It moves along the length direction of the base 1 toward the direction close to the pipe placement mechanism. The servo motor 2 and the clamp 3 are rotated to move the pipe in this state (the weld is always at the bottom of the pipe) and put it back on the pipe placement mechanism. After the pipe moves, the magnet releases the magnetic force and resets to the magnet placement mechanism; the clamp 3 is released (the pipe after the weld is positioned is retained on the pipe placement mechanism), and the servo motor 2 and the clamp 3 are moved along the length direction of the base 1 toward the direction away from the pipe placement mechanism. Then, the robot arm for the pipe bending operation is used to grasp the two ends of the pipe and apply force downward to bend the pipe into a bend. At this time, the weld is located in the concave part of the bend, which greatly reduces the difficulty of grinding and polishing the convex part of the bend.

[0040] In another technical solution, the stainless steel pipe weld positioning device further includes

[0041] a sensor for detecting displacement of the magnet in a vertical direction;

[0042] A controller is connected to the sensor and the rotary servo motor.

[0043] A sensor and a controller are further provided in conjunction. The sensor is used to detect whether the magnet is displaced in the vertical direction. The sensor is specifically a photoelectric switch sensor that controls the on / off of the rotary servo motor. The sensor is provided on the path of the magnet moving in the vertical direction, for example, on the side wall of the magnet placement mechanism. Before the magnet is magnetically attracted, it is located in the magnet placement mechanism. When the weld seam of the pipe is rotated and is at the bottom position, the magnet moves vertically upward under the action of the magnetic attraction force. The light source of the photoelectric switch sensor is blocked by the magnet, the photoelectric switch is turned off, and the rotary servo motor stops operating.

[0044] The sensor can also be an infrared sensor, which is arranged on the path where the magnet moves upward. When the pipe is rotated by the rotary servo motor 2 until the weld is located at the bottom of the pipe, the weld is opposite to the magnet. Under the action of the magnetic attraction, the magnet moves upward and passes through the infrared ray emitted by the infrared sensor, which determines that the magnet has moved upward. The detection signal is then sent to the controller. (The sensor can also be a pressure sensor. A pressure sensor is provided on the magnet placement mechanism 5, and the magnet is placed on the pressure sensor. When the weld is opposite to the magnet, under the action of the magnetic attraction, the magnet moves upward. The pressure sensor detects the change in pressure value, which determines that the magnet has shifted vertically.) After receiving the detection signal, the controller controls the rotary servo motor 2 to stop rotating.

[0045] In another technical solution, the stainless steel pipe weld positioning device further includes a slide rail 11, which is slidably arranged on the bottom of the base 1 along the length direction of the base 1, and the rotary servo motor 2 is arranged on the slide rail 11. The rotary servo motor 2 is slidably arranged on the slide rail 11 and is slidably connected to the base 1 along the length direction of the base 1.

[0046] In another technical solution, the stainless steel pipe weld positioning device further includes a first mounting seat 21, which is an L-shaped structure. The horizontal side of the first mounting seat 21 is provided with a slider, which is slidably arranged on the slide rail 11. The vertical side of the first mounting seat 21 is perpendicular to the length direction of the base 1. The rotary servo motor 2 is arranged on one side of the vertical side of the first mounting seat 21, and the clamp 3 is arranged on the other side of the vertical side of the first mounting seat 21. The output shaft of the rotary servo motor 2 is movable through the vertical side of the first mounting seat 21 and connected to the clamp 3. Through the first mounting seat 21, the rotary servo motor 2 and the clamp 3 are slidably arranged on the slide rail 11 along the length direction of the base 1. While providing an installation position for the rotary servo motor 2 and the clamp 3, the rotary servo motor 2 can also drive the clamp 3 to rotate in the circumferential direction.

[0047] In another technical solution, the stainless steel pipe weld positioning device further includes a cylinder 6, which is mounted on the base 1 via an L-shaped second mounting seat. The piston rod of the cylinder 6 extends along the length of the base 1 and is connected to the vertical side of the first mounting seat 21. The cylinder 6 is provided to drive the rotary servo motor 2 and the clamp 3 to move linearly on the base 1, thereby improving the degree of automation of the equipment.

[0048] In another technical solution, the stainless steel pipe weld positioning device includes two third mounting seats 41 spaced apart along the length of the base 1, each of which has an arc-shaped placement area 42 at its top. The two third mounting seats 41 provide placement areas 42, which support both ends of the pipe and improve the stability of the pipe support.

[0049] In another technical solution, the stainless steel pipe weld positioning device comprises a magnet placement mechanism 5 comprising a fourth mounting seat disposed on the base 1, having a placement slot defined at its top. The magnet is placed within the placement slot, and the sensor is also disposed within the placement slot. The fourth mounting seat is located between the third mounting seat and the first mounting seat 21. If the sensor is an infrared sensor, the infrared transmitter seat is disposed on one side of the placement slot, and the infrared receiver is disposed on the other side of the placement slot (opposite the side where the infrared transmitter seat is located). If the sensor is a pressure sensor, the pressure sensor can be mounted on a spring in conjunction with an elastic telescopic rod.

[0050] In practical applications, the photoelectric switch sensor is used as an example to illustrate:

[0051] like Figure 3 As shown, the photoelectric switch sensor 7 is arranged on the inner wall of one side of the placement groove 51, and the magnet 52 can be connected to the placement groove through a vertical elastic telescopic rod (two vertically arranged inner rods 81 and outer rods 82 arranged inside and outside, the top of the inner rod 81 is vertically connected to the magnet 52, the bottom of the outer rod 82 is connected to the bottom of the placement groove 51, and the bottom of the inner rod 81 is connected to the outer rod 82 via a vertically arranged spring 83). When the elastic telescopic rod is naturally extended, the magnet 52 is located below the pipe. When the pipe is rotated to a position where the weld is downward, the weld is opposite to the magnet 52. Under the action of magnetic attraction, the magnet 52 moves upward and adsorbs to the bottom of the pipe (where the weld is located). The light source of the photoelectric switch sensor is blocked, and the rotary servo motor stops rotating, and the weld position can be located. At this time, the elastic telescopic rod is stretched. When the pipe is driven by the cylinder to move the first mounting seat carrying the clamp and the pipe back to the position where the pipe placement mechanism is located (the pipe moves to a position where it does not interfere with the magnet), the magnet automatically moves downward and resets to the placement groove 51 under the action of the spring.

[0052] In another technical solution, the aforementioned stainless steel pipe weld positioning device comprises a pneumatic gripper 3. The pneumatic gripper offers greater flexibility and efficiency in gripping operations. The pneumatic gripper's air gripper 31 is located near the pipe placement mechanism and is used to grip one end of the pipe.

[0053] The specific working process of this utility model:

[0054] Place the two ends of the pipe to be detected and positioned (the pipe is made of sheet metal rolled, and the weld extends along the axis of the pipe) on the placement area of the two third mounting seats. The pneumatic cylinder drives the rotary servo motor and the clamp to move to the pipe placement mechanism on the base. The pneumatic clamp grabs one end of the pipe, and then starts the cylinder again to drive the rotary servo motor, the clamp, and the pipe to move away from the third mounting seat on the base until the magnet is located below the pipe. Start the rotary servo motor to drive the clamp and the pipe to rotate around the axis of the pipe. When the weld on the pipe rotates to the bottom, the weld is opposite to the magnet. The magnet moves upward under the action of magnetic attraction and adsorbs on the pipe. After the sensor detects the movement signal of the magnet, it sends the detection signal to the control The controller receives the detection signal to control the rotary servo motor to stop operating. At this time, the pipe fitting stops at the position where the weld is at the bottom. The cylinder is started again to drive the rotary servo motor, the fixture, and the pipe fitting after detection and positioning to move in the direction close to the third mounting seat. The pipe fitting is placed back in the placement area, and the air claws of the fixture are started to open to release the grip on the pipe fitting. The pipe fitting is now placed on the two third mounting seats with the weld at the bottom. The cylinder is started to move the rotary servo motor and the fixture in the direction away from the third mounting seat. Subsequently, the manipulator for the pipe bending operation moves to both sides of the two third mounting seats, and downward force is applied to both ends of the pipe fitting. The pipe fitting bends downward to form a bend with the weld in the concave part, so that the pipe fitting avoids the weld when bending, reducing the difficulty of the subsequent grinding and polishing process.

[0055] The number of devices and processing scales described herein are used to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art.

[0056] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with this field, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. Stainless steel pipe weld positioning device, characterized in that: include: A base, on which a pipe placement mechanism is provided, and the pipe is placed on the pipe placement mechanism along the length direction of the base; a rotary servo motor slidably disposed on the base along the length direction of the base, wherein the output shaft of the rotary servo motor extends along the length direction of the base; a clamp connected to the output shaft of the rotary servo motor, the clamp being used to grasp the pipe; The magnet placement mechanism is arranged between the clamp and the pipe placement mechanism. The magnet placement mechanism is provided with a magnet that moves in a vertical direction, and the magnet is located below the pipe.

2. The stainless steel pipe weld positioning device according to claim 1, characterized in that: Also includes a sensor for detecting displacement of the magnet in a vertical direction; A controller is connected to the sensor and the rotary servo motor.

3. The stainless steel pipe weld positioning device according to claim 2, characterized in that: It also includes a slide rail, which is slidably arranged at the bottom of the base along the length direction of the base, and the rotary servo motor is arranged on the slide rail.

4. The stainless steel pipe weld positioning device according to claim 3, characterized in that: It also includes a first mounting seat, which is an L-shaped structure. The horizontal edge of the first mounting seat is provided with a slider, which is slidably arranged on the slide rail. The vertical edge of the first mounting seat is perpendicular to the length direction of the base; the rotary servo motor is arranged on one side of the vertical edge of the first mounting seat, and the clamp is arranged on the other side of the vertical edge of the first mounting seat. The output shaft of the rotary servo motor moves through the vertical edge of the first mounting seat and is connected to the clamp.

5. The stainless steel pipe weld positioning device according to claim 4, characterized in that: It also includes a cylinder, which is arranged on the base through an L-shaped second mounting seat. The piston rod of the cylinder extends along the length direction of the base and is connected to the vertical side of the first mounting seat.

6. The stainless steel pipe weld positioning device according to claim 5, characterized in that: The pipe placement mechanism includes two third mounting seats spaced apart along the length direction of the base, and a curved placement area is provided on the top of each third mounting seat.

7. The stainless steel pipe weld positioning device according to claim 6, characterized in that: The magnet placement mechanism includes a fourth mounting seat arranged on the base, a placement groove is provided on the top of the fourth mounting seat, the magnet is placed in the placement groove, and the sensor is arranged in the placement groove.

8. The stainless steel pipe weld positioning device according to claim 7, characterized in that: The clamp is a pneumatic clamp.

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