Transverse protection device of laser welding seam tracking sensor

Abstract

The utility model discloses a transverse protection device of a laser welding seam tracking sensor, which relates to the technical field of welding seam laser tracking sensors and comprises a mounting plate fixedly connected with the bottom surface of the laser welding seam tracking sensor. The protection plate is connected with the mounting plate through an external thread bearing and can transversely move along the mounting plate; the protection plate is driven by a power execution mechanism, and the output end of the power execution mechanism is fixedly connected with the protection plate; according to the utility model, the protection plate and the mounting plate form a moving pair, and the power execution mechanism drives the protection plate to move transversely so as to protect the laser welding seam tracking sensor; and the transverse movement between the protection plate and the mounting plate is changed into rolling friction through the external thread bearing, so that the frictional resistance is reduced, the operation of the protection structure is smoother, meanwhile, the mutual abrasion between the mounting plate and the protection plate is reduced, the service life can be prolonged, and the equipment loss is reduced.

Description

Technical Field

[0001] This utility model relates to the field of laser tracking sensor technology for weld seams, and specifically to a lateral protection device for a laser weld seam tracking sensor. Background Technology

[0002] With the continuous development and popularization of technology, automation and intelligence remain the trends in industrial development, leading to the increasingly widespread application of welding and cutting robots. Many welding robots now have laser weld seam tracking sensors mounted on their front ends to detect the position of the weld seam. This information is then compared with the theoretical position to guide the robot in automated and intelligent welding. However, the welding process generates a large amount of smoke and spatter that adheres to the sensors, obstructing image acquisition and resulting in a decline in weld quality.

[0003] Currently, some technologies incorporate protective devices below the sensor to shield it from fumes and spatter generated during welding (cutting). These existing devices consist of a baffle, a frame, and transparent glass. The baffle slides within a groove in the frame, closing via a sliding switch, working in conjunction with the transparent glass to protect the sensor. However, the high friction during sliding significantly impacts movement speed and smoothness, and both the baffle and frame experience wear with repeated sliding. Furthermore, the frame structure is complex, with its groove length roughly matching the sensor length, resulting in cumbersome manufacturing processes and high costs. Moreover, the transparent glass, laid flat along the sensor's length, only provides protection at the lens and laser exit points, leaving a large area unprotected and representing a waste of resources. Utility Model Content

[0004] In view of one or more shortcomings of the prior art, this utility model provides a lateral protection device for a laser weld seam tracking sensor, which can realize the smooth operation of the protective baffle and the speed is adjustable, ensuring stable operation of the equipment. The overall structure is compact and the processing technology is simple, making it suitable for working conditions where laser tracking sensors require protection.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A lateral protection device for a laser weld seam tracking sensor includes a mounting plate fixedly connected to the bottom surface of the laser weld seam tracking sensor, a protective plate installed below the mounting plate, the protective plate being connected to the mounting plate via an external threaded bearing and capable of moving laterally along the mounting plate; the protective plate is driven by a power actuator, the output end of which is fixedly connected to the protective plate.

[0007] As a further implementation, the power actuator is fixedly connected to the mounting plate via a fixing plate, the fixing plate being fixedly disposed on the side of the mounting plate; preferably, the power actuator is a cylinder, and the cylinder is equipped with a speed regulating valve.

[0008] As a further implementation, the output end of the power actuator is connected to a connecting block, and the other end of the connecting block is fixedly connected to the side of the protective plate, thereby driving the protective plate to move linearly relative to the mounting plate.

[0009] As a further implementation, the mounting plate is fixedly connected to the bottom surface of the laser weld seam tracking sensor by screws.

[0010] As a further implementation, the protective plate has at least one rolling channel on its side, and the external threaded bearing is provided in the rolling channel. The protective plate forms a rolling fit with the external threaded bearing through the rolling channel. The threaded end of the external threaded bearing is fixedly connected to the mounting plate. The protective plate can move laterally relative to the mounting plate to adjust its relative position with the laser weld seam tracking sensor, thereby playing a protective role and blocking the fumes and spatter generated during welding.

[0011] As a further implementation, the mounting plate has a first light-transmitting hole, and the protective plate has a second light-transmitting hole. When the protective plate moves laterally until the first light-transmitting hole and the second light-transmitting hole coincide, the laser weld seam tracking sensor can detect and image the weld seam. When the protective plate moves laterally until the first light-transmitting hole and the second light-transmitting hole are misaligned, the protective plate protects the laser weld seam tracking sensor.

[0012] As a further implementation, the upper part of the mounting plate is provided with a side channel for installing a protective lens; the protective lens is disposed in the side channel to provide secondary protection for the laser weld seam tracking sensor.

[0013] As a further implementation, the protective lens is made of wear-resistant, high-temperature-resistant transparent plastic or tempered glass.

[0014] As a further implementation, the mounting plate has a pre-set flexible buffer at the installation point of the protective lens to press the protective lens firmly and prevent it from falling.

[0015] As a further implementation, the flexible buffer is preferably a ball-head plunger.

[0016] By adopting the above technical solution, the beneficial effects of this utility model are as follows:

[0017] 1. In this utility model, a protective plate and a mounting plate are arranged to form a moving pair. The protective plate is driven to move laterally by a power actuator to protect the laser weld seam tracking sensor. The lateral movement between the protective plate and the mounting plate is converted into rolling friction by an external thread bearing, which reduces frictional resistance, makes the protective structure run more smoothly, and reduces the mutual wear between the mounting plate and the protective plate, thereby extending the service life and reducing equipment wear.

[0018] 2. In this utility model, inserting the protective lens along the side channel into the mounting plate can provide secondary protection for the laser weld seam tracking sensor. Furthermore, it can be inserted along the width direction of the sensor, which improves the utilization rate of the protective lens, avoids resource waste, and reduces costs compared to using the protective lens along the length direction.

[0019] 3. The mounting plate and protective plate in this utility model have a compact and reasonable structure, and the processing technology is simple. They can be realized using ordinary machining equipment, resulting in low processing costs. Attached Figure Description

[0020] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0021] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the utility model;

[0022] Figure 2 This is a top view of the lateral protective device without the protective lens installed in the embodiment of the utility model;

[0023] Figure 3 This is a schematic diagram of the back of the lateral protective device in an embodiment of the utility model;

[0024] Figure 4 This is a schematic diagram of the protective plate being opened in an embodiment of the utility model;

[0025] Figure 5 This is a schematic diagram of the mounting plate structure in an embodiment of the utility model;

[0026] Figure 6 This is a schematic diagram of the protective plate structure in an embodiment of the utility model.

[0027] In the diagram: 1. Mounting plate; 2. Fixing plate; 3. Protective plate; 4. Protective lens; 5. Power actuator; 6. Connecting block; 7. External thread bearing; 8. Flexible buffer; 9. Protective cover; 10. Speed ​​control valve; 101. Light transmission hole; 102. Side channel; 301. Light transmission hole; 302. Rolling channel. Detailed Implementation

[0028] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0029] It should be noted that the terminology used herein is for descriptive purposes only and is not intended to limit the exemplary embodiments according to this invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without inventive effort are within the scope of protection of this invention.

[0030] Example 1

[0031] In one typical embodiment of this application, a lateral protection device for a laser weld seam tracking sensor is provided, such as... Figure 1-6 As shown, it includes a mounting plate 1 that is fixedly connected to the bottom surface of a laser weld seam tracking sensor. A protective plate 3 is installed below the mounting plate. The protective plate is connected to the mounting plate 1 via an external thread bearing 7 and can move linearly along the lateral side of the mounting plate. The protective plate is driven by a power actuator 5, and the output end of the power actuator is fixedly connected to the protective plate 3.

[0032] like Figure 1 As shown, the lateral protection device in this embodiment includes a mounting plate 1, a fixing plate 2, a protective plate 3, a protective lens 4, a power actuator 5, a connecting block 6, and an external threaded bearing 7. The mounting plate 1 is fixed to the bottom surface of the laser weld seam tracking sensor by screws. The protective plate 3, as the main protective structure, is located below the mounting plate 1 and is semi-enclosed. A small gap is left between the inner side of the protective plate 3 and the outer side of the mounting plate 1. The protective plate 3 can be guided by the external threaded bearing 7 to move laterally along the mounting plate 1, thereby shifting laterally relative to the laser weld seam tracking sensor to switch protection states. One end of the fixing plate 2 is fixed to the side of the mounting plate 1, and the other end is connected to the power actuator 5. The power actuator 5 is used to drive the protective plate 3 to move laterally in a linear fashion. In this embodiment, as shown... Figure 1-3 As shown, the output end of the power actuator 5 is fixedly connected to the connecting block 6, and the other end of the connecting block 6 is fixedly connected to one side of the protective plate 3.

[0033] Specifically, the power actuator 5 can be replaced by a cylinder, a lead screw motor, or other power mechanism. In this embodiment, a cylinder is preferred as the power output for the lateral reciprocating motion of the protective plate 3. Figure 3As shown, the cylinder is equipped with a speed regulating valve 10, which can meet various speed requirements of the protective plate movement. At the same time, a protective cover 9 is installed on the outside to cope with various complex working conditions.

[0034] Specifically, such as Figure 1 , 3 As shown, the protective plate 3 has a rolling channel 302 on its side, and an external threaded bearing 7 is installed in the rolling channel. One end of the external threaded bearing is threaded, and the other end is a miniature bearing. The bearing end of the external threaded bearing 7 is located in the rolling channel 302. The protective plate 3 and the external threaded bearing 7 form a rolling fit through the rolling channel 302. The threaded end of the external threaded bearing 7 is fixedly installed on the side of the mounting plate 1. The protective plate 3 and the mounting plate 1 form a sliding pair. The protective plate 3 can move laterally relative to the mounting plate 1 to adjust its relative position with the laser weld seam tracking sensor, thus providing protection by shielding the fumes and spatter generated during welding. Furthermore, when the protective plate 3 moves laterally, the protective plate 3 and the external threaded bearing 7 experience rolling friction, greatly reducing resistance. In this embodiment, combined with... Figure 6 As shown, rolling channels 302 are provided on both sides of the protective plate 3 to guide the movement of the protective plate and ensure its smooth and stable movement.

[0035] Specifically, in combination Figure 5 , 6 As shown, the mounting plate 1 has a through-hole 101 at its bottom, and the protective plate 3 has a through-hole 301 on its bottom surface. These through-holes do not affect the optical path of the sensor laser and lens. When the protective plate 3 moves laterally until the second through-hole 301 coincides with the first through-hole 101, the laser weld seam tracking sensor can detect and image the weld. When the protective plate 3 moves laterally until the second through-hole 301 is misaligned with the first through-hole 101, the laser weld seam tracking sensor cannot image the weld. The protective plate 3 serves to protect the sensor.

[0036] In addition, this embodiment also includes a protective lens 4 as a secondary protective structure, such as Figure 1 , 2 As shown, a side channel 102 is provided on one side of the mounting plate 1 for mounting the protective lens 4. The protective lens 4 can be inserted along the side channel 102 on one side and embedded in the groove on the other side, providing secondary protection for the laser weld seam tracking sensor at the top. Furthermore, in this embodiment, the protective lens 4 is inserted along the width direction of the weld seam tracking sensor, greatly reducing the ineffective area of ​​the protective lens, improving its utilization rate, avoiding resource waste, and reducing costs. In this embodiment, the protective lens is made of wear-resistant, high-temperature-resistant transparent plastic or tempered glass.

[0037] Furthermore, a flexible buffer 8 is provided on the bottom surface of the mounting plate 1 to press the protective lens 4 against the bottom surface of the laser weld seam tracking sensor to prevent it from falling. In this embodiment, the flexible buffer 8 is preferably a ball-head plunger.

[0038] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it. Those skilled in the art should understand that this utility model can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A lateral protection device for a laser weld seam tracking sensor, characterized in that The installation plate is fixedly connected with the bottom surface of the laser weld seam tracking sensor, and a protection plate is installed below the installation plate.

2. A lateral protection device for a laser weld seam tracking sensor according to claim 1, characterized in that The protection plate is connected with the installation plate through an external thread bearing and can move laterally along the installation plate.

3. A lateral protection device for a laser weld seam tracking sensor according to claim 2, characterized in that The protection plate is driven by a power actuator, and the output end of the power actuator is fixedly connected with the protection plate.

4. A lateral protection device for a laser weld seam tracking sensor according to claim 1, characterized in that At least one rolling channel is formed on the side surface of the protection plate, and the external thread bearing is arranged in the rolling channel.

5. A lateral protection device for a laser weld seam tracking sensor according to claim 1, characterized in that The thread end of the external thread bearing is fixedly connected with the installation plate.

6. A lateral protection device for a laser weld seam tracking sensor according to claim 1, characterized in that A first light transmission hole is formed on the installation plate, and a second light transmission hole is formed on the protection plate.

7. A lateral protection device for a laser weld seam tracking sensor according to claim 6, characterized in that When the protection plate moves laterally to the first light transmission hole and the second light transmission hole are overlapped, the laser weld seam tracking sensor can detect imaging.

8. A lateral protection device for a laser weld seam tracking sensor according to claim 1, characterized in that When the protection plate moves laterally to the first light transmission hole and the second light transmission hole are misaligned, the protection plate protects the laser weld seam tracking sensor.

9. A lateral protection device for a laser weld seam tracking sensor according to claim 8, characterized in that The output end of the power actuator is connected with a connecting block, and the other end of the connecting block is fixedly connected with the side surface of the protection plate.

10. A lateral protection device for a laser weld seam tracking sensor according to claim 9, characterized in that The installation plate is fixedly connected with the bottom surface of the laser weld seam tracking sensor through a screw. The power actuator is fixedly connected with the installation plate through a fixing plate. The power actuator is a cylinder, and the cylinder is provided with a speed regulating valve. A side channel is arranged on the upper part of the installation plate for installing a protection lens. The protection lens is arranged in the side channel to protect the laser weld seam tracking sensor. A flexible buffer is arranged on the installation plate at the position of the protection lens. The flexible buffer is a ball plunger.

Images