CN210475808U

CN210475808U - Automatic deviation correcting device for submerged arc welding position

Info

Publication number: CN210475808U
Application number: CN201921638643.3U
Authority: CN
Inventors: 张艳英; 王瑞起; 张波; 廉海强; 赵辉
Original assignee: Tianjin Pipeline Engineering Group Co Ltd
Current assignee: Tianjin Pipeline Engineering Group Co Ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-05-08
Anticipated expiration: 2029-09-29

Abstract

The utility model provides an automatic deviation rectifying device for a submerged arc welding position, which comprises a control box, a welding unit and a tracking detection unit, wherein a controller is arranged in the control box; and the welding unit comprises a sliding table which is linearly moved along the welding seam direction of the workpiece, and a sliding block on the sliding table is provided with a welding gun. The tracking detection unit comprises a box body and a pointer, the pointer is rotatably installed in the box body through a first shaft, the pointer is located right in front of the welding gun, and a detection structure for detecting the deflection position of the top of the pointer is arranged in the box body. Deviation correcting device, trail the welding track of butt welding gun through the pointer in the detection box body to through detecting this pointer and for the welding seam beat situation, obtain pointer and welding seam position relation, the controller is according to this detection information, the sliding block drives welder and removes on the control slip table, in good time adjustment welder position guarantees that welder welding track and work piece welding seam are just right, guarantees welding quality.

Description

Automatic deviation correcting device for submerged arc welding position

Technical Field

The utility model belongs to the technical field of the welding, especially, relate to a submerged arc welding position automatic deviation rectification device.

Background

Submerged arc welding is one of the current mechanized welding methods with higher production efficiency, in the welding process, for example, in the welding process of long straight seam welding or the circumferential direction welding of a round pipe, in order to ensure that the welding position is accurate, a welding wire is always opposite to a welding seam in the welding process, a common method is welding by one person, an observer is also needed to assist, the observer performs visual inspection on the position of the welding gun and the welding seam, and then reminds the welder to adjust the position of the welding gun in due time, on one hand, the welding mode is provided with at least two operators at a welding station, so that the labor cost is increased, on the other hand, the visual inspection is performed for a long time, so that the visual fatigue is caused, the welding position is also inaccurate.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a submerged arc welding position automatic deviation rectification device to detect the welding orbit of butt welding rifle, and in time correct its skew phenomenon.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

an automatic deviation correcting device for a submerged arc welding position comprises:

the control box is internally provided with a controller;

the welding unit comprises a sliding table which is linearly arranged along the welding line direction of the workpiece in a moving way, the moving direction of a sliding block on the sliding table is horizontal and vertical to the welding line, a welding gun which is vertically downward is arranged on the sliding block, and a servo motor on the sliding table is electrically connected with the controller;

trail the detecting element, including the box body, the box body passes through connecting rod and welder fixed connection, the box body bottom is equipped with the opening, and vertical direction is equipped with the pointer in this box body, the pointer is installed in the box body through the rotation of the primary shaft that a level set up in non-tip position department, and primary shaft and slip table moving direction syntropy, this pointer bottom are stretched out by the box body opening, and the pointer is located welder dead ahead, be equipped with the detection structure to pointer top beat position detection in the box body, detection structure and controller electricity are connected.

Further, the detection structure comprises two distance sensors which are respectively and electrically connected with the controller, and the top of the pointer is arranged right in the middle of the two distance sensors.

Furthermore, the detection structure comprises a mercury switch arranged at the top of the pointer, the mercury switch is horizontal and vertical to the first axis, two electrodes electrically connected with the controller are respectively arranged at two ends of the mercury switch, and the top of the pointer is arranged at the middle position of the mercury switch.

Further, the pointer includes straight pole portion and the tracking pole portion that the bottom extends, straight pole portion length is greater than tracking pole portion length, the primary shaft sets up in straight pole portion bottom position department, tracking pole portion bottom is equipped with the needle point structure that corresponds with the welding seam.

Further, the tracking rod part is provided with a balancing weight at the middle upper position.

Furthermore, the pointer comprises a straight rod part and a connecting piece connected with the bottom end of the straight rod part, a first shaft is arranged at the bottom end of the straight rod part, a limiting groove is formed in the bottom surface of the connecting piece, the central line of the limiting groove is parallel to the first shaft, a roller is inserted into the limiting groove, the width of the limiting groove corresponds to the width of the roller, a strip hole is formed in each of the two groove walls of the limiting groove in the vertical direction, the two strip holes are right opposite, and two ends of a second shaft for mounting the roller are placed in one strip hole respectively.

Furthermore, the roller is a metal wheel, and the cross section of the rim of the roller is of a needle point structure corresponding to the welding seam.

Furthermore, a horizontal ruler is arranged on the top surface of the box body and is vertical to the first shaft.

Furthermore, the device also comprises an audible and visual alarm which is electrically connected with the controller.

Furthermore, the controller comprises a transformer power switch, a first relay and a second relay, the transformer power switch is connected with the first relay in the forward direction and connected with the second relay in the reverse direction, the first relay and the second relay are both connected with the servo motor, the tracking detection unit is connected with the first relay and the second relay, a left deflection signal of the tracking detection unit serves as a first relay control signal, and a right deflection signal of the tracking detection unit serves as a second relay control signal.

Compared with the prior art, a submerged arc welding position automatic deviation rectification device have following advantage:

deviation correcting device, trail the welding track of butt welding gun through the pointer in the detection box body to through detecting this pointer and for the welding seam beat situation, obtain pointer and welding seam position relation, the controller is according to this detection information, the sliding block drives welder and removes on the control slip table, in good time adjustment welder position guarantees that welder welding track and work piece welding seam are just right, guarantees welding quality.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

FIG. 1 is a perspective view of the deviation correcting device according to the present embodiment;

FIG. 2 is a schematic diagram illustrating a distance sensor as a detecting structure of a detecting device according to an embodiment;

FIG. 3 is a schematic view showing a mercury switch as a detection structure in the second detection device according to the embodiment;

FIG. 4 is a schematic diagram of a pointer structure with a roller according to a third embodiment;

FIG. 5 is a left side view of FIG. 4;

FIG. 6 is a diagram showing the relationship between the position of the needle and the position of the needle during welding without a groove weld;

FIG. 7 is a diagram showing the relationship between the position of a groove-containing weld and the position of a pointer during welding;

FIG. 8 is a schematic diagram of the circuit control of the deviation rectifying device.

Description of reference numerals:

1-a control box;

2-welding unit:

21-a servo motor; 22-a slide block; 23-a slide table; 24-a welding torch;

3-a connecting rod;

4-a workpiece;

5-tracking detection unit:

51-a cartridge; 52-first axis; 53-pointer; 531-straight rod part; 532-tracking the rod part; 5322-a counterweight; 533-a connector; 5331-a limiting groove; 5332-elongated holes; 534-roller; 535-second axis; 54-a distance sensor; 55-mercury switch; 57-level bar;

6-audible and visual alarm.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and 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 therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, 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 meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in figure 1, the automatic deviation rectifying device for the submerged arc welding position comprises a control box 1, a welding unit 2 and a tracking detection unit 5, wherein a controller is arranged in the control box 1, and when the automatic deviation rectifying device is applied, the control box and a welding device are relatively fixed; welding unit 2, including setting up on welding equipment and along 4 welding seam direction rectilinear movement's of work piece slip table 23, slip table 23 level sets up, it is horizontal and perpendicular with the welding seam to guarantee the slider 22 moving direction on the slip table 23, the rigid coupling has the dop that is used for clamping welder on the slider 22, welder 24 is fixed on slider 22 through this dop for the welding, servo motor 21 and the controller electricity that drive slider 22 rectilinear movement are connected, slip table 23 rectilinear movement drives welder 24 along 4 welding seam rectilinear movement of work piece, the welding wire that welder 24 held is to this welding seam welding operation. The tracking detection unit 5, as shown in fig. 2-5, includes a box 51, the box 51 is fixedly connected to the welding gun 24 through the connecting rod 3, and the box 51 moves linearly along the welding seam synchronously with the welding gun 24. The box body 51 is internally provided with a pointer 53 in the vertical direction, the pointer 53 is rotatably arranged in the box body 51 through a first shaft 52 which is horizontally arranged at the position of a non-end part, the bottom end of the pointer 53 extends out of the opening of the box body 51, the bottom end of the pointer 53 is provided with a needle point structure, and the bottom end of the pointer 53 deflects around the first shaft 52 when being acted by external force. In order to ensure the vertical state of the pointer 53 during detection, the gravity center of the pointer 53 is located right below the first shaft 52, and the pointer 53 is automatically in the vertical detection position state under the action of the gravity center of the pointer. And a detection structure for detecting the deflection position of the top of the pointer 53 is arranged in the box body 51. During specific tracking detection, the pointer 53 is arranged right in front of the welding gun 54 for welding the workpiece 4, the box body 51 moves synchronously with the welding gun 24, the pointer 53 moves synchronously with the welding gun along the welding direction of the welding seam, namely the same linear direction, the pointer is ensured to be always positioned right in front of the welding gun, the moving track of the pointer 53 is the moving track of the welding gun, when the welding gun 54 deviates from the welding seam, the box body 51 is driven to deviate from the welding seam, and as the needle point of the pointer is inserted into the welding seam, the pointer 53 deflects around the first shaft 52 under the operation of the side wall of the welding seam, so whether the pointer 53 deviates from the welding seam of the workpiece 4 in the welding process of the welding gun 24.

The specific description is as follows: in general, a weld is divided into two types of weld structures, i.e., a beveled weld structure and an ungrooved weld structure. As shown in fig. 6, the weld of the workpiece 4 is not provided with the welding groove, and the tip of the pointer 53 is inserted into the top of the weld, and when the welding gun welds along the weld, the pointer 53 is moved forward, if the welding gun deviates from the welding seam, the pointer 53 should deviate, because the needle point of the pointer 53 is inserted into the welding seam, under the action of the side wall of the welding seam, the pointer 53 generates deflection around the first shaft 52, at the moment, whether deflection occurs at the top of the pointer 53 is detected through the detection structure, then the detection signal is transmitted to a controller, the controller processes the signal to finally obtain whether the welding gun deviates and make a judgment, then, the servo motor 21 is started, the sliding block 22 is driven to move, the welding gun 24 moves linearly along with the sliding block 22 synchronously until the welding gun 24 is opposite to the welding seam, deviation correction of deviation position detection of the welding gun is achieved timely, it is guaranteed that the welding position of the welding gun is opposite to the welding seam, and the pointer 53 is restored to the vertical detection state at the moment. Referring to fig. 7, the weld of the workpiece 4 is a weld with a welding groove, and the needle tip of the pointer 53 is inserted into the weld through the groove in the same principle.

In the present embodiment, two structural forms are provided for the detection structure, and in the first embodiment, as shown in fig. 2, the detection structure includes two distance sensors 54 respectively connected to the controller, the distance sensors 54 are metal distance sensors, the pointer 3 is a metal pointer, and the top of the pointer 53 is disposed at the middle position of the two distance sensors 54. In this embodiment, the position of the pointer 53 is detected by two distance sensors 54, and the detection signal is transmitted to the controller, so that the controller controls the servo motor 21 to rotate forward and backward. The control principle is as shown in fig. 8, the controller in the box body 1 includes a transformer power switch, a first relay and a second relay, for convenience of description, two distance sensors are set as a sensor a and a sensor B, the sensor a, the first relay and the servo motor 21 are sequentially communicated to form a left deflection signal circuit, the sensor B, the second relay and the servo motor 21 are sequentially and electrically connected to form a right deflection signal circuit, and the first relay and the second relay are respectively and electrically connected with the transformer power switch to provide a power source for the servo motor. In order to realize reverse control of the servo motor steering through the first relay and the second relay, the current input to the first relay and the current input to the second relay through the transformer power switch need to be reversed, the specific connection structure is that the normally open contact of the first relay is electrically connected with the normally closed contact of the second relay, the normally closed contact of the first relay is electrically connected with the normally open contact of the second relay, then the two wirings are respectively connected with the positive electrode and the negative electrode of the transformer power switch, the transformer power switch is externally connected with a 220V power supply, and therefore the reverse control of the servo motor steering through the left deflection signal circuit and the reverse control of the servo motor steering through the right deflection signal circuit are realized. Referring to the positional relationship of fig. 8, when the welding gun 24 drives the box body 51 to deflect to the left of the welding seam, the welding seam and the needle point act, the top end of the pointer 53 deflects to the left and approaches the sensor a, the sensor a is switched on corresponding to the left deflection signal circuit, the servo motor 21 rotates, the slider 22 drives the welding gun 24 to move to the right of the welding seam until the welding gun moves to the position opposite to the welding seam, the pointer 53 returns to the initial state, and the left deflection signal circuit is switched off. In the same principle, when the welding gun 24 deviates to the right side of the welding seam, the right deflection signal circuit is opened, the servo motor rotates reversely, and the sliding block 22 drives the welding gun to move left until the welding gun is opposite to the welding seam. The deviation direction of the welding gun is detected by the two distance sensors 54, and the welding gun is controlled by the controller to return and move to realize automatic deviation rectification control operation. In the second embodiment, as shown in fig. 3, the detecting structure includes a mercury switch 55 disposed on the top of the pointer 53, the mercury switch 55 is horizontal and perpendicular to the first axis 52, two electrodes connected to the controller are disposed on two ends of the mercury switch 55, and the top of the pointer 53 is disposed at the middle of the mercury switch 55. The structure and principle of the mercury switch 55 are conventional, and when the pointer 53 swings, the circuit connection is made on one side of the mercury switch 55 at the lower end, so that the controller controls the rotation direction of the servo motor, and finally controls the moving direction of the slide block 22, thereby realizing the deviation correction operation of the welding gun 24. The connection of the control circuit of the mercury switch 55 is the same as that of the two control circuits in the first embodiment, and will not be described herein.

In this embodiment, as shown in fig. 2 and 3, the pointer 53 is in the form of a rod structure, and includes a straight rod portion 531 and a tracking rod portion 532 extending from a bottom end thereof, the length of the straight rod portion 531 is greater than the length of the tracking rod portion 532, and the first shaft 52 is disposed at a bottom end of the straight rod portion 531. The structure is based on the lever principle, and when the pointer rotates, the deflection amount of the top end of the straight rod part 531 is larger than the deflection amount of the bottom end of the tracking rod part 532, so that deflection data can be acquired better. In this embodiment, a weight 5322 is disposed at a middle upper position of the tracking rod 532, so that the center of gravity of the pointer 53 is located on the tracking rod 532, and the pointer 53 is ensured to be automatically vertically disposed.

In order to be suitable for welding of welding seams with changed heights, such as welding connection of pipe walls during production of conical pipes, in the welding process of the welding seams of the structure, the needle point 53 is higher than the height of a welding gun, so that in order to improve the universality of the deviation correcting device and enable the deviation correcting device to be also suitable for welding of the welding seams with fluctuant heights, the structure of the needle adopts the structure shown in the third embodiment. As shown in fig. 4 and 5, the pointer 53 includes a straight rod portion 531 and a connecting member 533 connected to a bottom end of the straight rod portion 531, the first shaft 52 is disposed at the bottom end of the straight rod portion 531, a limiting groove 5331 is disposed on a bottom surface of the connecting member 533, a central line of the limiting groove 5331 is parallel to the first shaft 52, a roller 534 is inserted into the limiting groove 5331, the roller 534 is a metal wheel, and a cross section of a rim of the roller is a needle point structure corresponding to a weld seam. In this embodiment, the width of the limiting groove 5331 corresponds to the width of the roller 534, the width of the limiting groove 5331 only needs to ensure that the roller 534 can move up and down in the limiting groove 5331, two groove walls of the limiting groove 5331 are respectively provided with a long hole 5332 in the vertical direction, the two long holes 5332 are opposite, two ends of the second shaft 535 for mounting the roller 534 are respectively placed in the long holes 5332, and the width of the long holes 5332 corresponds to the diameter of the second shaft 535. The roller 534 automatically falls under its own weight until the second shaft 535 falls to the lowest end of the elongated hole 5332. When tracking detection is carried out, the needle point structure of the roller 534 is inserted into the welding seam, the roller is supported by the welding seam and the needle point due to the fact that the roller is provided with the needle point structure, when the height of the welding seam rises, the roller 534 moves upwards, the welding position of the welding gun is continuously tracked and detected, and whether the welding gun deviates from the welding seam and the deviation amount of the welding gun is detected.

In this embodiment, in order to observe that the initial position of the pointer 53 is vertical with respect to the box 1, i.e. whether the top end of the pointer 53 is located at the middle of the detecting structure, a horizontal ruler 57 is disposed on the top surface of the box 51, and the horizontal ruler 57 is perpendicular to the first shaft 52.

In this embodiment, the apparatus further includes an audible and visual alarm 6, the audible and visual alarm 6 is connected to the left deflection signal circuit and the right deflection signal circuit at the same time, the circuit relationship is as shown in fig. 8, the detection structure detects the pointer deflection signal, on one hand, the servo motor is controlled to be turned on by the corresponding deflection signal circuit, and on the other hand, the audible and visual alarm 6 is turned on to give an alarm.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a submerged arc welding position automatic deviation rectification device which characterized in that: the method comprises the following steps:

the control box (1), the controller is arranged in the control box (1);

the welding unit (2) comprises a sliding table (23) which is linearly moved along the welding line direction of the workpiece (4), the moving direction of a sliding block (22) on the sliding table (23) is horizontal and is vertical to the welding line, a welding gun (24) which is vertically downward is arranged on the sliding block (22), and a servo motor (21) on the sliding table (23) is electrically connected with the controller;

trail detecting element (5), including box body (51), box body (51) are through connecting rod (3) and welder (24) fixed connection, box body (51) bottom is equipped with the opening, and vertical direction is equipped with pointer (53) in this box body (51), pointer (53) are installed in box body (51) through the rotation of first axle (52) that a level set up in non-tip position department, and first axle (52) and slip table (23) moving direction syntropy, and this pointer (53) bottom is stretched out by box body (51) opening, and pointer (53) are located welder (24) dead ahead, be equipped with the detection structure to pointer (53) top beat position detection in box body (51), detection structure and controller electricity are connected.

2. The automatic deviation rectifying device for the submerged arc welding position according to claim 1, characterized in that: the detection structure comprises two distance sensors (54) which are respectively electrically connected with the controller, and the top of the pointer (53) is arranged at the right middle of the two distance sensors (54).

3. The automatic deviation rectifying device for the submerged arc welding position according to claim 1, characterized in that: the detection structure comprises a mercury switch (55) arranged at the top of a pointer (53), the mercury switch (55) is horizontal and vertical to the first shaft (52), two electrodes electrically connected with the controller are respectively arranged at two end parts of the mercury switch (55), and the top end of the pointer (53) is arranged at the middle position of the mercury switch (55).

4. The automatic deviation rectifying device for the submerged arc welding position according to claim 1, characterized in that: pointer (53) are including straight pole portion (531) and tracking pole portion (532) that the bottom extended, straight pole portion (531) length is greater than tracking pole portion (532) length, first axle (52) set up in straight pole portion (531) bottom position department, tracking pole portion (532) bottom is equipped with the needle point structure that corresponds with the welding seam.

5. The automatic deviation rectifying device for the submerged arc welding position according to claim 4, characterized in that: the tracking rod part (532) is provided with a balancing weight (5322) at the middle upper position.

6. The automatic deviation rectifying device for the submerged arc welding position according to claim 1, characterized in that: the pointer (53) comprises a straight rod part (531) and a connecting part (533) connected with the bottom end of the straight rod part (531), a first shaft (52) is arranged at the bottom end of the straight rod part (531), a limiting groove (5331) is formed in the bottom surface of the connecting part (533), the central line of the limiting groove (5331) is parallel to the first shaft (52), a roller (534) is inserted into the limiting groove (5331), the width of the limiting groove (5331) corresponds to the width of the roller (534), two groove walls of the limiting groove (5331) are respectively provided with a long hole (5332) in the vertical direction, the two long holes (5332) are opposite, and two ends of a second shaft (535) for mounting the roller (534) are respectively placed in one long hole (5332).

7. The automatic deviation rectifying device for the submerged arc welding position according to claim 6, characterized in that: the roller (534) is a metal wheel, and the cross section of the rim of the metal wheel is of a needle point structure corresponding to the welding seam.

8. The automatic deviation rectifying device for the submerged arc welding position according to claim 1, characterized in that: a horizontal ruler (57) is arranged on the top surface of the box body (51) and is vertical to the first shaft (52).

9. The automatic deviation rectifying device for the submerged arc welding position according to any one of claims 1-8, characterized in that: the device also comprises an audible and visual alarm (6), and the audible and visual alarm (6) is electrically connected with the controller.

10. The automatic deviation rectifying device for the submerged arc welding position according to any one of claims 1-8, characterized in that: the controller comprises a transformer power switch, a first relay and a second relay, the transformer power switch is connected with the first relay in the forward direction and connected with the second relay in the reverse direction, the first relay and the second relay are both connected with a servo motor, the tracking detection unit (5) is connected with the first relay and the second relay, a left deflection signal of the tracking detection unit serves as a first relay control signal, and a right deflection signal of the tracking detection unit serves as a second relay control signal.