Device and system for monitoring welding process

Abstract

The embodiment of the invention provides a device and system for monitoring the welding process. The device comprises a multi-axis mechanical arm, a rotation driving mechanism, a displacement driving mechanism and a guide cylinder mechanism. One free end of the multi-axis mechanical arm is connected with a welding seat, and the welding seat is used for mounting a welding head; the rotary driving mechanism is rotatably arranged on the welding seat in a sleeving manner; the displacement driving mechanism is fixedly arranged on the rotation driving mechanism; the guide cylinder mechanism is arranged on the displacement driving mechanism and moves under the driving of the displacement driving mechanism; the guide cylinder mechanism comprises a guide cylinder with openings at two ends and a monitor arranged at the opening at one end of the guide cylinder; the monitor is driven by the rotary driving mechanism to move in the circumferential direction of the welding head, and the position distance between the monitor and the welding head is adjusted under the driving of the displacement driving mechanism. And the welding position can be shot at multiple angles.

Description

Technical Field

[0001] The embodiments of the present disclosure belong to the field of welding technology, and particularly relate to a device and a system for monitoring a welding process. Background Art

[0002] Automatic welding is a mechanization and automation technology of welding process, which occupies an important position in modern welding technology. Automatic welding refers to the technology that the main actions of welding process, such as igniting arc, feeding welding rod, moving arc and extinguishing arc, are automatically completed by machines. Welding monitoring is a complex process involving multiple links and parameters, aiming to ensure welding quality and production efficiency; currently there is welding parameter monitoring, monitoring welding current, voltage, power, etc. These are basic parameters in welding process and directly affect welding quality. These parameters are monitored in real time through special sensors and measuring equipment to ensure that they are within the acceptable range. Parameters such as welding speed and temperature also need to be monitored to ensure the stability and consistency of the welding process; real-time monitoring of welding process is to capture the welding process in real time through high-resolution cameras or sensors, including details such as nugget formation, weld shape and size, and then use image processing and data analysis technology to make a preliminary assessment of welding quality, so as to detect abnormal conditions in time.

[0003] Through the use of automatic welding process monitoring devices, it was found that the shooting angle of the camera during the welding process is limited, and it is difficult to shoot the welding position from multiple angles. At the same time, the camera is easily disturbed by welding smoke during the welding process, and the temperature at the welding point is high, so the camera is easy to heat up, causing the shooting picture to be stuck and not smooth. Summary of the invention

[0004] The embodiments of the present disclosure aim to solve at least one of the technical problems existing in the prior art and provide a device and system for monitoring a welding process.

[0005] In one aspect, an embodiment of the present disclosure provides a device for monitoring a welding process, the device comprising:

[0006] A multi-axis mechanical arm, wherein a free end of the multi-axis mechanical arm is connected to a welding seat, and the welding seat is used to install a welding head;

[0007] A rotary drive mechanism, the rotary drive mechanism being rotatably sleeved on the welding seat;

[0008] A displacement driving mechanism, wherein the displacement driving mechanism is fixedly mounted on the rotation driving mechanism;

[0009] A guide cylinder mechanism, wherein the guide cylinder mechanism is arranged on the displacement drive mechanism and moves under the drive of the displacement drive mechanism; wherein,

[0010] The guide cylinder mechanism includes a guide cylinder with openings at both ends, and a monitor arranged at the opening at one end of the guide cylinder; the monitor moves circumferentially around the welding head under the drive of the rotation drive mechanism, and adjusts the position distance from the welding head under the drive of the displacement drive mechanism.

[0011] Optionally, the rotary drive mechanism comprises a first drive motor, a drive gear, an annular gear plate and a rotary seat;

[0012] The first drive motor is arranged on the welding seat, the output shaft of the first drive motor is connected to the drive gear, and the drive gear is meshed with the annular toothed plate gear sleeved on the welding seat;

[0013] The rotating seat includes a base plate and a side wall extending to one side along the edge of the base plate, wherein the base plate and the side wall define a receiving groove for accommodating the annular gear plate and the driving gear; and the base plate is sleeved on the welding seat, and the side surface of the annular gear plate is connected to the base plate.

[0014] Optionally, the device further comprises a first limiting ring and a second limiting ring sleeved on the outer surface of the welding seat;

[0015] The first limiting ring and the second limiting ring are respectively located on two opposite sides of the bottom plate, and are used to clamp and limit the bottom plate.

[0016] Optionally, the displacement drive mechanism includes a connecting member and a slide rail assembly;

[0017] The first end of the connecting member is fixedly connected to the side wall, and the second end of the connecting member is bent and connected to the slide rail assembly; the guide cylinder mechanism is arranged on the slide rail assembly and moves along the length direction of the slide rail assembly under the drive of the slide rail assembly.

[0018] Optionally, the slide rail assembly includes a slide rail frame, a lead screw, a second drive motor and a slide seat;

[0019] The slide rail frame is connected to the second end of the connecting member at a preset angle, and the screw rod is passed through the two ends of the slide rail frame along the length direction of the slide rail frame;

[0020] The second driving motor is arranged at one end of the slide rail frame and is transmission-connected to the screw rod; the slide seat is slidably mounted on the slide rail frame, the slide seat is also penetrated by the screw rod and is threadedly connected to the screw rod, and the slide seat is connected to the guide cylinder mechanism.

[0021] Optionally, the slide rail frame is arranged to be inclined relative to the welding seat.

[0022] Optionally, the inclination angle of the slide rail frame relative to the welding seat is 15° to 30°.

[0023] Optionally, the guide cylinder mechanism further includes a heat sink and a third drive motor;

[0024] The radiator is arranged at the opening at the other end of the guide cylinder, and the radiator and the monitor are respectively located at the top and bottom ends of the guide cylinder;

[0025] The third driving motor is arranged on the sliding seat, and the output shaft of the third driving motor is connected to the guide cylinder.

[0026] Optionally, the radiator is configured as a fan, and the monitor is configured as a high-definition camera.

[0027] On the other hand, an embodiment of the present disclosure provides a welding system, which adopts the device described above.

[0028] The device and system for monitoring the welding process of the embodiment of the present disclosure adjusts the angle of the monitor to the welding head and the position distance of the monitor to the welding head by rotating the monitor around the welding head, thereby avoiding blind spots in the monitoring welding process and improving the accuracy of shooting during the welding process. In addition, the wind is blown to the welding position through the radiator to avoid the monitoring path of the monitor being blocked by smoke, thereby ensuring the monitoring clarity, and the blown wind can cool and dissipate the heat of the monitor when passing through the monitor, thereby avoiding overheating and jamming, thereby effectively ensuring the monitoring quality of the monitor. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of a device for monitoring a welding process according to an embodiment of the present disclosure;

[0030] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure of the central rotating drive mechanism from a side view;

[0031] Figure 3 for Figure 1 A partial schematic diagram of the three-dimensional structure viewed from above. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the present disclosure, the present disclosure is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0033] like Figure 1As shown, a device for monitoring a welding process comprises a multi-axis robot arm 1, a rotation drive mechanism 2, a displacement drive mechanism 3 and a guide cylinder mechanism 4. A free end of the multi-axis robot arm 1 is connected to a welding seat 5, and the welding seat 5 is used to mount a welding head 6. The rotation drive mechanism 2 is rotatably sleeved on the welding seat 5. The displacement drive mechanism 3 is fixed to the rotation drive mechanism 2. The guide cylinder mechanism 4 is arranged on the displacement drive mechanism 3 and moves under the drive of the displacement drive mechanism 3.

[0034] The guide cylinder mechanism 4 includes a guide cylinder 41 with openings at both ends, and a monitor 42 disposed at an opening at one end of the guide cylinder 41. The monitor 42 moves around the circumference of the welding head 6 under the drive of the rotation drive mechanism 2, and adjusts the position distance with the welding head 6 under the drive of the displacement drive mechanism 3.

[0035] Specifically, Figure 1 As shown, the multi-axis robot arm 1 of the device for monitoring the welding process provided in this embodiment has three or more rotating axes, and a welding seat 5 is connected to one free end of the multi-axis robot arm 1, and a welding head is installed on the welding seat 5. A rotating drive mechanism 2 for driving the guide cylinder mechanism 4 to rotate around the welding head 6 is installed on the outer side of the welding seat 5. A displacement drive mechanism 3 for driving the guide cylinder mechanism 4 to move is connected to the rotating drive mechanism 2. Through the cooperation of the rotating drive mechanism 2 and the displacement drive mechanism 3, the monitor 42 can be rotated around the welding head 6 as the axis, and the angle of the monitor 42 to the welding head 6 can be adjusted, and the position distance between the monitor 42 and the welding head 6 can be changed, so as to avoid blind spots in the monitoring process and improve the monitoring accuracy during the welding process.

[0036] For example, Figure 1 and Figure 2 As shown, the rotary drive mechanism 2 includes a first drive motor 21, a drive gear 22, an annular gear plate 23 and a rotating seat 24. The first drive motor 21 is arranged on the welding seat 5, and the output shaft of the first drive motor 21 is connected to the drive gear 22, and the drive gear 22 is gear-engaged with the annular gear plate 23 sleeved on the welding seat 5. The rotating seat 24 includes a bottom plate (not marked in the figure) and a side wall (not marked in the figure) extending to one side along the edge of the bottom plate, and the bottom plate and the side wall define a receiving groove 25 for accommodating the annular gear plate 23 and the drive gear 22. And, the bottom plate is sleeved on the welding seat 5, and the side surface of the annular gear plate 23 is connected to the bottom plate.

[0037] Furthermore, the device further comprises a first limiting ring 7 and a second limiting ring 8 sleeved on the outer surface of the welding seat 5. The first limiting ring 7 and the second limiting ring 8 are respectively located on opposite sides of the bottom plate to clamp and limit the bottom plate.

[0038] Specifically, Figure 1 and Figure 2 As shown, the bottom plate is sleeved on the outer surface of the welding seat 5, and the first limiting ring 7 and the second limiting ring 8 are respectively sleeved on the left and right sides of the bottom plate to limit the bottom plate. The receiving groove 25 is located on the same side of the bottom plate, and the annular tooth plate 23 is located in the receiving groove 25 and sleeved on the welding seat 5. It is not difficult to understand that Figure 2 As shown, the annular tooth plate 23 is sleeved on the outer surface of the second limiting ring 8, and the side surface of the annular tooth plate 23 is connected to the right side surface of the bottom plate.

[0039] The driving gear 22 is meshed with the annular toothed plate 23 and is located in the receiving groove 25, and the driving gear 22 is also connected to the output shaft of the first driving motor 21, and the first driving motor 21 is installed on the welding seat 5. The first driving motor 21 drives the driving gear 22 to rotate, and the driving gear 22 drives the annular toothed plate 23 to move so that the rotating seat 24 rotates. The rotating seat 24 rotates outside the welding seat 5, which can drive the displacement driving mechanism 3 and the guide cylinder mechanism 4 to rotate around the welding head 6, so that the monitor can monitor the monitoring process 360 degrees without blind spots.

[0040] For example, Figures 1 to 3 As shown, the displacement drive mechanism 3 includes a connecting member 31 and a slide rail assembly 32. The first end of the connecting member 31 is fixed to the side wall, and the second end of the connecting member 31 is bent and connected to the slide rail assembly 32. The guide cylinder mechanism 4 is arranged on the slide rail assembly 32, and moves along the length direction of the slide rail assembly 32 under the drive of the slide rail assembly 32.

[0041] Furthermore, the rail assembly 32 includes a rail frame 321, a screw rod 322, a second drive motor 323 and a slide seat 324. The rail frame 321 is connected to the second end of the connector 31 at a preset angle, and the screw rod 322 is disposed at both ends of the rail frame 321 along the length direction of the rail frame 321.

[0042] The second driving motor 323 is disposed at one end of the rail frame 321 and is in driving connection with the screw rod 322. The slide seat 324 is slidably sleeved on the rail frame 321, and the slide seat 324 is also penetrated by the screw rod 322 and is threadedly connected with the screw rod 322. The slide seat 324 is connected to the guide cylinder mechanism 4.

[0043] Specifically, Figures 1 to 3 As shown, the first end of the connecting member 31 is fixedly connected to the side wall of the receiving groove 25, and the second end of the connecting member 31 is connected to the slide rail frame 321 at a preset angle. Figure 2 and Figure 3 As shown, the preset angle can be set to 90 degrees. Of course, the preset angle can also be set to other different angles according to application needs, and this embodiment does not limit this.

[0044] like Figure 3 As shown, the slide 324 is provided with through holes, the through holes on both sides of the slide 324 are used to be penetrated on the slide rail frame 321, and the through hole in the central area of ​​the slide 324 is used to be penetrated on the screw rod 322 and threadedly connected with the screw rod 322. Under the driving action of the second driving motor 323, the screw rod 322 rotates and drives the slide 324 to move along the length direction of the slide rail frame 321, so as to drive the guide cylinder mechanism 4 to adjust the position distance with the welding head 6, thereby adjusting the position distance between the monitor 42 and the welding head 6. It should be noted that in this embodiment, a threaded cylinder 325 can be set in the through hole in the central area of ​​the slide 324, and the threaded connection with the screw rod 322 is achieved through the threaded cylinder 325.

[0045] Furthermore, the third drive motor 44 is arranged on the slide 324, and the output shaft of the third drive motor 44 is connected to the guide cylinder 41. On the basis of driving the monitor 42 to adjust the position distance with the welding head 6 through the displacement drive mechanism 3, the third drive motor 44 is continued to cooperate to ensure that the monitor 42 can always align with the welding head 6 to change the shooting angle. It is not difficult to understand that the first drive motor, the second drive motor and the third drive motor can all rotate forward or reverse.

[0046] For example, Figures 1 to 3 As shown, the slide rail frame 321 is tilted relative to the welding seat 5. The distance and tilt angle of the welding position of the monitor 42 aligned with the welding head 6 are adjusted by sliding the slide seat 324 on the slide rail frame 321. For example, the tilt angle of the slide rail frame 321 relative to the welding seat 5 is 15° to 30°.

[0047] For example, Figures 1 to 3 As shown, the guide cylinder mechanism 4 further includes a radiator 43. The radiator 43 is arranged at the opening at the other end of the guide cylinder 41, and the radiator 43 and the monitor 42 are respectively located at the top and bottom ends of the guide cylinder 41.

[0048] Specifically, Figures 1 to 3As shown, the radiator 43 is arranged at the top opening of the guide cylinder 41, and the monitor 42 is arranged at the bottom opening of the guide cylinder 41. An air guide groove 45 is provided between the monitor 42 and the inner side wall of the guide cylinder 41, and the air guide groove 45 surrounds the monitor 42 and the air guide cylinder 41 to form an annular channel therebetween. The radiator 43 can be set as a fan, and the monitor 42 can be set as a high-definition camera. The wind blown out by the fan flows downward through the air guide groove 45, and blows the wind to the welding position of the welding head 6, so as to avoid the high-definition camera's shooting path being blocked by smoke, thereby ensuring the shooting clarity of the high-definition camera, and the wind blown out by the fan can cool down the high-definition camera when passing through the air guide groove 45, so as to avoid the high-definition camera from overheating and freezing.

[0049] As an example, the specific operation process is as follows: the first drive motor 21 drives the drive gear 22 to rotate, and the drive gear 22 is engaged with the annular gear plate 23 to realize the rotation of the rotating seat 24 outside the welding seat 5. Through the connection between the displacement drive mechanism 3 and the guide cylinder mechanism 4, the heat sink 43 and the monitor 42 are rotated around the welding head 6 to achieve 360-degree monitoring without blind spots.

[0050] The second drive motor 323 drives the screw rod 322 to rotate, and the screw rod 322 is connected with the threaded tube 325 to realize the sliding seat 324 on the slide rail frame 321, driving the position adjustment of the radiator 43 and the monitor 42. Through the cooperation of the third drive motor 44, it is ensured that the radiator 43 and the monitor 42 are always aligned with the welding head 6 to change the shooting angle.

[0051] The wind blown out of the radiator 43 flows downward through the air guide groove 45, so that the wind can be blown to the welding position of the welding head 6 to avoid the monitoring path of the monitor 42 being blocked by smoke, thereby ensuring the monitoring clarity of the monitor. When the wind blown out of the radiator 43 passes through the air guide groove 45, the monitor 42 can be cooled and dissipated to avoid overheating and jamming of the monitor 42.

[0052] On the other hand, an embodiment of the present disclosure further provides a welding system, which adopts the device described in the above text. The specific structure of the device can refer to the relevant records in the above text and will not be described in detail here.

[0053] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present disclosure, but the present disclosure is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and substance of the present disclosure, and these modifications and improvements are also considered to be within the scope of protection of the present disclosure.

Claims

1. A device for monitoring a welding process, characterized in that: The device comprises: A multi-axis mechanical arm, wherein a free end of the multi-axis mechanical arm is connected to a welding seat, and the welding seat is used to install a welding head; A rotary drive mechanism, wherein the rotary drive mechanism is rotatably mounted on the welding seat; A displacement driving mechanism, wherein the displacement driving mechanism is fixedly mounted on the rotation driving mechanism; A guide cylinder mechanism, wherein the guide cylinder mechanism is arranged on the displacement drive mechanism and moves under the drive of the displacement drive mechanism; wherein, The guide cylinder mechanism includes a guide cylinder with openings at both ends, and a monitor arranged at the opening at one end of the guide cylinder; the monitor moves circumferentially around the welding head under the drive of the rotation drive mechanism, and adjusts the position distance from the welding head under the drive of the displacement drive mechanism.

2. The device for monitoring a welding process according to claim 1, characterized in that: The rotary drive mechanism comprises a first drive motor, a drive gear, an annular gear plate and a rotary seat; The first drive motor is arranged on the welding seat, the output shaft of the first drive motor is connected to the drive gear, and the drive gear is meshed with the annular toothed plate gear sleeved on the welding seat; The rotating seat comprises a bottom plate and a side wall extending to one side along the edge of the bottom plate, wherein the bottom plate and the side wall define a receiving groove for receiving the annular gear plate and the driving gear; Furthermore, the bottom plate is sleeved on the welding seat, and the side surface of the annular tooth plate is connected to the bottom plate.

3. The device for monitoring a welding process according to claim 2, characterized in that: The device also includes a first limiting ring and a second limiting ring sleeved on the outer surface of the welding seat; The first limiting ring and the second limiting ring are respectively located on two opposite sides of the bottom plate, and are used to clamp and limit the bottom plate.

4. The device for monitoring a welding process according to claim 2, characterized in that: The displacement driving mechanism includes a connecting piece and a slide rail assembly; The first end of the connecting member is fixedly connected to the side wall, and the second end of the connecting member is bent and connected to the slide rail assembly; the guide cylinder mechanism is arranged on the slide rail assembly and moves along the length direction of the slide rail assembly under the drive of the slide rail assembly.

5. The device for monitoring a welding process according to claim 4, characterized in that: The slide rail assembly comprises a slide rail frame, a lead screw, a second drive motor and a slide seat; The slide rail frame is connected to the second end of the connecting member at a preset angle, and the screw rod is passed through the two ends of the slide rail frame along the length direction of the slide rail frame; The second driving motor is arranged at one end of the slide rail frame and is transmission-connected to the screw rod; the slide seat is slidably mounted on the slide rail frame, the slide seat is also penetrated by the screw rod and is threadedly connected to the screw rod, and the slide seat is connected to the guide cylinder mechanism.

6. The device for monitoring a welding process according to claim 5, characterized in that: The slide rail frame is arranged tilted relative to the welding seat.

7. The device for monitoring a welding process according to claim 6, characterized in that: The inclination angle of the slide rail frame relative to the welding seat is 15° to 30°.

8. The device for monitoring a welding process according to claim 5, characterized in that: The guide cylinder mechanism also includes a radiator and a third drive motor; The radiator is arranged at the opening at the other end of the guide cylinder, and the radiator and the monitor are respectively located at the top and bottom ends of the guide cylinder; The third driving motor is arranged on the sliding seat, and the output shaft of the third driving motor is connected to the guide cylinder.

9. The device for monitoring a welding process according to claim 8, characterized in that: The radiator is configured as a fan, and the monitor is configured as a high-definition camera.

10. A welding system, characterized in that: The device according to any one of claims 1 to 9 is used.

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