A welding protection device and the welding system thereof

Abstract

This utility model provides a welding protection device and a welding system thereof, used to protect the outer area of ​​the welding zone of a workpiece, wherein the workpiece is located in the welding position. The welding protection device includes a detection sensor, a clamping drive, and a clamping protective component. The detection sensor is located on the side of the welding position. The clamping drive is connected to the clamping protective component and can drive the clamping protective component to move towards or away from the workpiece. The clamping protective component is provided with a clamping head adapted to the end of the welding zone of the workpiece, and the width of the clamping head is greater than or equal to the width of the outer area of ​​the welding zone of the workpiece. The clamping drive is communicatively connected to the detection sensor. This application avoids the problem in the prior art where welding molten metal drips into the workpiece, causing contamination and interference to other parts of the workpiece.

Description

Technical Field

[0001] This utility model relates to the technical field of welding protection, and in particular to a welding protection device and the welding system formed therefrom. Background Technology

[0002] Air conditioning pipe fittings are an important component connecting air conditioning pipes to heat exchangers and other parts. Air conditioning pipe fittings are formed by welding air conditioning pipes and connectors together. The connectors include a head and a screw. The screw has external threads on the outside and is located at one end of the head. The other end of the head has a through hole. Welding of air conditioning pipe fittings refers to welding the air conditioning pipe and the through hole of the head together.

[0003] In existing technology, air conditioning pipe joints use an automatic wire-feeding welding method. The connector is fixed in the positioning column of the welding device, the air conditioning pipe is placed in the welding through hole, and the center of the connector and the welding through hole is evenly heated using a welding torch. Then, the welding torch fills the gap between the welding through hole and the air conditioning pipe with welding liquid to weld the air conditioning pipe and the welding through hole. During the welding process using the above method, due to problems such as inaccurate positioning of the welding torch, uneven welding level of the welding torch, and welding parameters, welding liquid can adhere to the external thread position of the screw. Once the external thread is contaminated with welding liquid, it will affect the sealing of the connection when the connector is connected to other components, thus leading to refrigerant leakage and abnormal operation of the air conditioner. Utility Model Content

[0004] To overcome the problems existing in related technologies, one of the objectives of this utility model is to provide a welding protection device that avoids the contamination and interference caused by welding liquid dripping into the workpiece in the prior art.

[0005] A welding protection device is used to protect the outer area of ​​the welding zone of a workpiece, the workpiece being located in the welding position; it includes a detection sensor, a clamping drive, and a clamping protection, the detection sensor being located on the side of the welding position;

[0006] The clamping drive is connected to the clamping protection, and the clamping drive can drive the clamping protection to move toward or away from the workpiece; the clamping protection is provided with a clamping head adapted to the end of the welding area of ​​the workpiece, and the width of the clamping head is greater than or equal to the width of the outer area of ​​the welding area of ​​the workpiece; the clamping drive is communicatively connected to the detection sensor.

[0007] In this application, the detection sensor is located on the side of the welding position to monitor whether there is a workpiece in the welding position. If a workpiece is placed there, the clamping drive moves the clamping protection component closer to the workpiece until the clamping head in the clamping protection component clamps the end of the workpiece welding area. Since the width of the clamping head is greater than the width of the workpiece welding area, it can achieve complete coverage of the area outside the workpiece welding area. This ensures that even if there is welding liquid dripping during the welding process, the welding liquid will not drip into the area outside the end of the workpiece welding area, but will drip into the clamping head. The welding liquid in the clamping head can be cleaned by routine cleaning, avoiding the contamination and interference of other parts of the workpiece caused by welding liquid dripping into the workpiece in the prior art.

[0008] In a preferred embodiment of this invention, there are two clamping and protective components, which are located at both ends of the workpiece welding area.

[0009] The two ends of the workpiece welding area refer to the top and bottom of the welding area. In actual operation, the spray gun fills the welding area with welding molten metal, which drips vertically downwards under gravity. To prevent welding molten metal from dripping onto the bottom of the welding area, a clamping protective device needs to be installed at the bottom to protect the area below the welding area. Simultaneously, during welding, the welding gun may shift or vibrate, causing welding molten metal to enter the area above the welding area. Therefore, this application provides corresponding clamping protective devices at both the top and bottom of the welding area to prevent welding molten metal from dripping or vibrating into the outer area of ​​the welding area, thus improving protection efficiency and effectiveness.

[0010] In a preferred embodiment of this utility model, the workpiece is an air conditioning pipe connector, which includes an air conditioning pipe and a connector. The welding area of ​​the air conditioning pipe connector refers to the connection position between the air conditioning pipe and the connector. The connector includes a head and a screw, and the screw has an external thread on its outer side.

[0011] In this application, one end of the head is provided with a screw, and the outer side of the screw is provided with an external thread for connecting other components in the air conditioner. The other end of the head is provided with a welding through hole, the inner diameter of which is slightly larger than the outer diameter of the air conditioning pipe. During the welding process, the end of the air conditioning pipe is placed in the welding through hole, and the gap between the welding through hole and the air conditioning pipe is filled with welding molten metal to achieve welding of the air conditioning pipe connector. The purpose of this application is to prevent welding molten metal from dripping into the external thread of the screw during the welding process. Once the external thread is contaminated with welding molten metal, it will affect the sealing performance of the external thread, causing problems such as poor sealing and refrigerant leakage in the air conditioner.

[0012] In a preferred embodiment of this invention, when the clamping drive member drives the clamping protective member to abut against the air conditioning pipe connector, the clamping head is located between the air conditioning pipe and the head, and the width of the clamping head is greater than or equal to the width of the connector.

[0013] In this specific structure, only one clamping protective component can be provided. When the clamping drive component moves the clamping protective component to abut against the air conditioning pipe connector, the clamping head is located between the air conditioning pipe and the head to prevent the welding molten metal from dripping or vibrating into the screw, thus affecting the sealing performance of the external thread. In actual operation, the screw can be fixed vertically downward in the welding position. At this time, the air conditioning pipe is located at the top of the connector. This application sets the width of the clamping head to be greater than the width of the connector, so that the clamping head completely covers the connector in the vertical projection. At this time, even if the welding molten metal drips, it will only drip into the clamping head and will not affect the connector, thereby protecting the connector during the welding process.

[0014] In a preferred embodiment of this invention, the welding protection device further includes a push rod and a pushing drive component. The pushing drive component is connected to one end of the push rod, and the other end of the push rod is connected to the clamping drive component.

[0015] In this application, a clamping drive component is used to drive the clamping protective component to move closer to or further away from the workpiece. In addition, this application also includes a pushing drive component, which, via a push rod, moves the clamping drive component and the clamping protective component together in a direction closer to or further away from the workpiece. The pushing drive component is provided to adjust the distance between the welding protection device and the welding position. When welding protection is not required, the pushing drive component, in conjunction with the clamping drive component, ensures that the welding protection device is sufficiently far from the welding position, avoiding interference with normal welding. In actual operation, the distance between the clamping protective component and the welding position can be coarsely adjusted using the pushing drive component. When the clamping protective component and the clamping drive component approach the welding position, the clamping drive component then drives the clamping protective component for precise positioning and protection. This improves the operating efficiency of the welding protection device and ensures the accuracy of protection.

[0016] In a preferred embodiment of this invention, the detection sensor is integrated into the drive component.

[0017] In this application, the detection sensor is used to detect whether a workpiece is placed at the welding position. If a workpiece is placed at the welding position, welding protection is applied; if no workpiece is placed, the drive component moves the entire welding protection device away from the welding position. The drive component is fixed at a certain distance from the welding position, and while the drive component itself remains stationary, it can move the clamping drive component and the clamping protection component together towards or away from the welding position. This application integrates the detection sensor into the drive component, which can be a push cylinder or similar component. The push cylinder can have a separate detection sensor or a push cylinder with its own solenoid valve, utilizing the existing solenoid valve to form the detection sensor. When the workpiece is an air conditioning pipe connector, since the connector is made of metal, when the air conditioning pipe connector approaches the push cylinder, the magnetic flux in the solenoid valve changes. This change in magnetic flux causes a change in induced electromotive force (EMF), which is converted into an output signal to determine whether the air conditioning pipe connector is approaching or moving away from the push cylinder, thus detecting the presence of an air conditioning pipe connector at the welding position.

[0018] In a preferred embodiment of this invention, the welding protection device further includes a connecting rod, the other end of which is connected to the center of the connecting rod, and both ends of the connecting rod are respectively connected to a clamping drive component.

[0019] This application utilizes a connecting rod to connect the push drive component to two clamping drive components, thereby achieving clamping protection for two parallel welding positions. The push drive component can simultaneously move both clamping drive components towards or away from the welding position, and each clamping drive component can independently control whether its corresponding clamping protection component protects the workpiece, improving the working efficiency of the welding protection device.

[0020] In a preferred embodiment of this invention, the clamping head includes two symmetrically arranged clamping plates, each clamping plate having a clamping notch. When the two clamping plates abut against each other, the two clamping notches form a notch that matches the end of the welding area of ​​the workpiece.

[0021] In this application, the two clamping plates can move closer or further apart under the action of the clamping drive. Specifically, one clamping plate can be fixed in place, while the clamping drive moves the other clamping plate closer or further away. Alternatively, the two clamping plates can be connected to different clamping drive components, which simultaneously move the two clamping plates in opposite directions to achieve the movement of the two clamping plates closer or further apart. When the two clamping plates abut, the clamping notches in the two clamping plates form a shape that fits the end of the workpiece's welding area, thereby isolating the workpiece's welding area from the outer area and protecting the outer area of ​​the workpiece's welding area. The use of two clamping plates effectively protects the outer area of ​​the workpiece's welding area while also simplifying the structure of the clamping protection component and making it easy to drive.

[0022] In a preferred embodiment of this invention, the clamping protective component further includes a slide rail and a slider, the clamping plate is fixedly connected to the slider, the slider is slidably connected to the slide rail, and the output end of the clamping drive component is connected to the slider.

[0023] To ensure smooth sliding of the two clamping plates, this application fixes the clamping plates in the slide rail via sliders. Driven by the clamping drive, the sliders and clamping plates move together in a direction closer to or further away from each other, thus clamping or releasing the workpiece. When the two clamping plates are clamping the workpiece, they isolate the welding area and its outer region, protecting the outer region of the welding area. When the two clamping plates are releasing the workpiece, they push the drive to move the clamping drive and clamping protection components away from the welding position, avoiding interference with the welding process.

[0024] The second objective of this application is to provide a welding system, including a welding apparatus and a welding protection device as described above, wherein the welding protection device is located on the side of the welding position in the welding apparatus.

[0025] The beneficial effects of this utility model are as follows:

[0026] This utility model provides a welding protection device for protecting the outer area of ​​a workpiece's welding zone, wherein the workpiece is located in the welding position. Specifically, it includes a detection sensor, a clamping drive, and a clamping protective component. The detection sensor is located on the side of the welding position. The clamping drive is connected to the clamping protective component and can move the clamping protective component towards or away from the workpiece. The clamping protective component is provided with a clamping head adapted to the end of the workpiece's welding zone. The width of the clamping head is greater than or equal to the width of the outer area of ​​the workpiece's welding zone. The clamping drive is communicatively connected to the detection sensor. The width of the clamping head refers to the dimension perpendicular to the plane of the contact surface after the clamping head abuts against the workpiece; that is, after the clamping head abuts against the workpiece, it can completely cover the outer area of ​​the workpiece's welding zone. In this application, the detection sensor is located on the side of the welding position to monitor whether there is a workpiece in the welding position. If a workpiece is placed there, the clamping drive moves the clamping protection component closer to the workpiece until the clamping head in the clamping protection component clamps the end of the workpiece welding area. Since the width of the clamping head is greater than the width of the workpiece welding area, it can achieve complete coverage of the area outside the workpiece welding area. This ensures that even if there is welding liquid dripping during the welding process, the welding liquid will not drip into the area outside the end of the workpiece welding area, but will drip into the clamping head. The welding liquid in the clamping head can be cleaned by routine cleaning, avoiding the contamination and interference of other parts of the workpiece caused by welding liquid dripping into the workpiece in the prior art.

[0027] This application also provides a welding system, including a welding apparatus and a welding protection device as described above. The welding protection device is located on the side of the welding position in the welding apparatus and is used to protect the outer area of ​​the workpiece welding zone. Since the width of the clamping head is greater than the width of the workpiece welding zone, it can achieve complete coverage of the area outside the workpiece welding zone. This ensures that even if welding liquid drips during the welding process, it will not drip into the area outside the end of the workpiece welding zone, but will drip into the clamping head. The welding liquid in the clamping head can be cleaned routinely, thus avoiding the contamination and interference caused by welding liquid dripping into the workpiece in the prior art. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the welding protection device in this application;

[0029] Figure 2 This is a side view of the welding protection device in this application;

[0030] Figure 3 This is a top view of the welding protection device in this application;

[0031] Figure 4 A schematic diagram of the clamping drive component and the clamping protection component;

[0032] Figure 5 This is a schematic diagram of the overall structure of the welding system of this application.

[0033] Figure label:

[0034] 11. Clamping drive component; 12. Clamping protective component; 13. Slide rail; 14. Clamping notch; 15. Slider; 16. Clamping plate; 21. Connecting rod; 22. Push rod; 31. Pushing drive component; 41. Welding turntable; 42. Welding position. Detailed Implementation

[0035] Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

[0036] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0037] It should be understood that although the terms "first," "second," "third," etc., may be used in this invention to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this invention, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0038] Example 1

[0039] like Figures 1-5As shown, this embodiment provides a welding protection device for protecting the outer area of ​​the welding zone of a workpiece, wherein the workpiece is located in the welding position 42. Specifically, it includes a detection sensor, a clamping drive 11, and a clamping protection 12. The detection sensor is located on the side of the welding position 42. The clamping drive 11 is connected to the clamping protection 12, and the clamping drive 11 can drive the clamping protection 12 to move towards or away from the workpiece. The clamping protection 12 is provided with a clamping head adapted to the end of the welding zone of the workpiece. The width of the clamping head is greater than or equal to the width of the outer area of ​​the welding zone of the workpiece. The clamping drive 11 is communicatively connected to the detection sensor.

[0040] In this application, welding position 42 refers to the position in the welding system used for welding the workpiece. Positioning components can be set in welding position 42 to limit and fix the workpiece, so as to unify the trajectory of the welding torch, etc.

[0041] In this application, the workpiece welding zone refers to the area within the workpiece used for filling with flux to achieve welding. The size and shape of this area need to be determined based on the specific characteristics of the workpiece. The end of the workpiece welding zone refers to the edge of the welding zone. When the workpiece welding zone is cylindrical or cuboid, the end refers to the top and bottom edges of the welding zone. The outer area of ​​the workpiece welding zone refers to the area within the workpiece other than the welding zone. The purpose of this application is to protect the outer area of ​​the workpiece welding zone, preventing flux dripping onto this area during the filling process.

[0042] In this application, the width of the clamping head refers to the dimension in the plane perpendicular to the contact surface after the clamping head abuts the workpiece. That is, after the clamping head abuts the workpiece, in the plane perpendicular to the contact surface, the clamping head can completely cover the outer area of ​​the workpiece welding zone.

[0043] It should be noted that in this application, "completely covering the outer area of ​​the workpiece welding zone with the clamping head" refers to complete coverage in the projection of the first direction, not complete coverage within the spatial structure. The first direction refers to the direction perpendicular to the plane where the contact surface is located. The reason for setting the head in the first direction to completely cover the workpiece welding zone is to facilitate the setting of the size and shape of the clamping head. In actual operation, the end of the workpiece welding zone is usually a planar structure, such as a cylindrical structure. The end of the workpiece welding zone refers to the top and bottom ends of the cylindrical structure, both of which are circular planes. The outer area connected to the end of the workpiece welding zone is also a cylindrical structure. In this way, the clamping head can be set as a planar structure to completely cover the outer area of ​​the workpiece welding zone in the first direction.

[0044] The purpose of the detection sensor in this application is to detect whether a workpiece is fixed in the welding position 42. If a workpiece is present, the clamping drive 11 will be controlled to move the clamping protection 12 toward the welding position 42 until the clamping head contacts the workpiece. If no workpiece is present, the clamping drive 11 will be controlled to move the clamping protection 12 away from the welding position 42 to avoid interference from the welding protection device and affect the continuity of the welding process.

[0045] In this application, the detection sensor is located on the side of the welding position 42 to monitor whether there is a workpiece in the welding position 42. If there is a workpiece, the clamping drive 11 drives the clamping protection 12 to approach the workpiece until the clamping head in the clamping protection 12 clamps the end of the workpiece welding area. Since the width of the clamping head is greater than the width of the workpiece welding area, it can achieve complete coverage of the area outside the workpiece welding area. This ensures that even if there is welding liquid dripping during the welding process, the welding liquid will not drip into the area outside the end of the workpiece welding area, but will drip into the clamping head. The welding liquid in the clamping head can be cleaned by routine cleaning, avoiding the contamination and interference of other parts of the workpiece caused by welding liquid dripping into the workpiece in the prior art.

[0046] Example 2

[0047] like Figures 1-5 As shown, this embodiment provides a welding protection device for protecting the outer area of ​​the welding zone of a workpiece, wherein the workpiece is located in the welding position 42. Specifically, it includes a detection sensor, a clamping drive 11, and a clamping protection 12. The detection sensor is located on the side of the welding position 42. The clamping drive 11 is connected to the clamping protection 12, and the clamping drive 11 can drive the clamping protection 12 to move towards or away from the workpiece. The clamping protection 12 is provided with a clamping head adapted to the end of the welding zone of the workpiece. The width of the clamping head is greater than or equal to the width of the outer area of ​​the welding zone of the workpiece. The clamping drive 11 is communicatively connected to the detection sensor.

[0048] The width of the clamping head refers to the dimension of the clamping head in the plane perpendicular to the contact surface after it comes into contact with the workpiece. In other words, after the clamping head comes into contact with the workpiece, it can completely cover the outer area of ​​the workpiece's welding zone.

[0049] Furthermore, there are two clamping protective members 12, which are located at both ends of the workpiece welding area.

[0050] The two ends of the workpiece welding area refer to the top and bottom of the workpiece welding area. In actual operation, the spray gun fills the workpiece welding area with welding molten metal. Under the action of gravity, the welding molten metal drips vertically downwards. To prevent the welding molten metal from dripping onto the bottom of the workpiece welding area, a clamping protective component 12 needs to be installed at the bottom of the workpiece welding area to protect the area below the workpiece welding area. At the same time, during the welding process, because the welding gun may deviate or vibrate, welding molten metal may also enter the area above the workpiece welding area. Therefore, this application provides corresponding clamping protective components at both the top and bottom of the workpiece welding area to prevent welding molten metal from dripping or vibrating into the outer area of ​​the workpiece welding area, thereby improving the protection efficiency and effect.

[0051] Furthermore, the workpiece is an air conditioning pipe connector, which includes an air conditioning pipe and a connector. The welding area of ​​the air conditioning pipe connector refers to the connection position between the air conditioning pipe and the connector. The connector includes a head and a screw, and the screw has an external thread on its outer side.

[0052] In this application, one end of the head is provided with a screw, and the outer side of the screw is provided with an external thread for connecting other components in the air conditioner. The other end of the head is provided with a welding through hole, the inner diameter of which is slightly larger than the outer diameter of the air conditioning pipe. During the welding process, the end of the air conditioning pipe is placed in the welding through hole, and the gap between the welding through hole and the air conditioning pipe is filled with welding molten metal to achieve welding of the air conditioning pipe connector. The purpose of this application is to prevent welding molten metal from dripping into the external thread of the screw during the welding process. Once the external thread is contaminated with welding molten metal, it will affect the sealing performance of the external thread, causing problems such as poor sealing and refrigerant leakage in the air conditioner.

[0053] Furthermore, when the clamping drive member 11 drives the clamping protective member 12 to abut against the air conditioning pipe connector, the clamping head is located between the air conditioning pipe and the head, and the width of the clamping head is greater than or equal to the width of the connector.

[0054] In this specific structure, only one clamping protective member 12 can be provided. When the clamping driving member 11 drives the clamping protective member 12 to abut against the air conditioning pipe connector, the clamping head is located between the air conditioning pipe and the head to prevent the welding liquid from dripping or vibrating into the screw in the welding area, thus affecting the sealing connection performance of the external thread. In actual operation, the screw can be fixed vertically downward in the welding position 42. At this time, the air conditioning pipe is located at the top of the connector. This application sets the width of the clamping head to be greater than the width of the connector so that the clamping head completely covers the connector in the vertical projection. At this time, even if the welding liquid drips, it will only drip into the clamping head and will not affect the connector, thereby protecting the connector during the welding process.

[0055] Furthermore, the welding protection device also includes a push rod 22 and a push drive 31, wherein the push drive 31 is connected to one end of the push rod 22 and the other end of the push rod 22 is connected to the clamping drive 11.

[0056] In this application, the clamping drive component 11 is used to drive the clamping protective component 12 to move closer to or further away from the workpiece. In addition, this application also includes a pushing drive component 31, which, via a push rod 22, drives the clamping drive component 11 and the clamping protective component 12 together to move closer to or further away from the workpiece. The reason for including the pushing drive component 31 is to adjust the distance between the welding protection device and the welding position 42. When welding protection is not required, the pushing drive component 31, in conjunction with the clamping drive component 11, ensures that the welding protection device is sufficiently far from the welding position 42, avoiding interference with normal welding in the welding position 42. In actual operation, the distance between the clamping protective component 12 and the welding position 42 can be coarsely adjusted by using the pushing drive component 31. When the clamping protective component 12 and the clamping drive component 11 approach the welding position 42, the clamping drive component 11 then drives the clamping protective component 12 for precise positioning and protection. This improves the operating efficiency of the welding protection device and ensures the accuracy of protection.

[0057] Furthermore, the detection sensor is integrated into the push drive component 31.

[0058] In this application, the detection sensor is used to detect whether a workpiece is placed in the welding position 42. If a workpiece is placed in the welding position 42, welding protection is applied. If no workpiece is placed, the drive component 31 needs to move the entire welding protection device away from the welding position 42. In this application, the position of the drive component 31 is fixed at a certain distance from the welding position 42, and the drive component 31 itself is fixed, but it can drive the clamping drive component 11 and the clamping protection component 12 to move towards or away from the welding position 42. In this application, the detection sensor is integrated into the drive component 31. The drive component 31 can be a push cylinder or other components. The detection sensor can be set separately in the push cylinder, or a push cylinder with a built-in solenoid valve can be used to form a detection sensor using the existing solenoid valve. When the workpiece is an air conditioner pipe connector, since the connecting parts in the air conditioner pipe connector are made of metal, when the air conditioner pipe connector approaches the push cylinder, the magnetic flux in the solenoid valve changes. The change in magnetic flux causes a change in induced electromotive force. The change in induced electromotive force is converted into an output signal, which can determine whether the air conditioner pipe connector is approaching or moving away from the push cylinder, thereby realizing the detection of whether an air conditioner pipe connector exists at welding position 42.

[0059] Furthermore, the welding protection device also includes a connecting rod 21, the other end of the push rod 22 is connected to the center of the connecting rod 21, and the two ends of the connecting rod 21 are respectively connected to the clamping drive member 11.

[0060] This application utilizes a connecting rod 21 to connect the push drive 31 to two clamping drive 11, thereby achieving clamping protection for two parallel welding positions 42. The push drive 31 can simultaneously drive the two clamping drive 11 to move closer to or further away from the welding position 42, and each clamping drive 11 can independently control whether its corresponding clamping protection 12 protects the workpiece, improving the working efficiency of the welding protection device.

[0061] Furthermore, the clamping head includes two symmetrically arranged clamping plates 16, and the clamping plates 16 are provided with clamping notches 14. When the two clamping plates 16 abut together, the two clamping notches 14 form a notch that matches the end of the welding area of ​​the workpiece.

[0062] In this application, the two clamping plates 16 can move closer or further apart under the action of the clamping drive member 11. Specifically, one clamping plate 16 can be fixed in place, while the clamping drive member 11 moves the other clamping plate 16 closer or further apart. Alternatively, the two clamping plates 16 can be connected to different clamping drive members 11, with the clamping drive members 11 simultaneously moving the two clamping plates 16 in opposite directions to achieve the movement of the two clamping plates 16 closer or further apart. When the two clamping plates 16 abut, the clamping notches 14 in the two clamping plates 16 form a shape that fits the end of the workpiece welding area, thereby isolating the workpiece welding area from the outer area and protecting the outer area of ​​the workpiece welding area. By using two clamping plates 16, effective protection of the outer area of ​​the workpiece welding area can be achieved, and the clamping protection member 12 has a simple structure and is easy to drive.

[0063] Furthermore, the clamping protective component 12 also includes a slide rail 13 and a slider 15. The clamping plate 16 is fixedly connected to the slider 15, the slider 15 is slidably connected to the slide rail 13, and the output end of the clamping drive component 11 is connected to the slider 15.

[0064] To ensure smooth sliding of the two clamping plates 16, this application fixes the clamping plates 16 in the slide rail 13 via sliders 15. Driven by the clamping drive 11, the slider 15 and clamping plates 16 move together towards or away from each other, thus clamping or releasing the workpiece. When the two clamping plates 16 are clamping the workpiece, they isolate the welding area and outer area of ​​the workpiece, protecting the outer area of ​​the welding zone. When the two clamping plates 16 are releasing the workpiece, the drive 31 pushes the clamping drive 11 and clamping protection 12 away from the welding position 42, avoiding interference with the welding process.

[0065] Example 3

[0066] like Figures 1-5 As shown, this application provides a welding system for welding air conditioning pipe joints. The welding area of ​​the air conditioning pipe joint refers to the connection position between the air conditioning pipe and the connector. The connector includes a head and a screw. The screw has an external thread on its outer side for connecting other components in the air conditioner. The other end of the head has a welding through-hole. The inner diameter of the welding through-hole is slightly larger than the outer diameter of the air conditioning pipe. During welding, the end of the air conditioning pipe is placed in the welding through-hole, and welding flux is filled into the gap between the welding through-hole and the air conditioning pipe to achieve welding of the air conditioning pipe connector.

[0067] The welding system includes a welding apparatus and a welding protective device, the welding protective device being located on the side of welding position 42 within the welding apparatus. For example... Figure 5 As shown, the welding device includes a welding torch, a welding turntable 41, and two welding positions 42. The two welding positions 42 are located at the edge of the welding turntable 41, and the welding torch is located on the side of the welding position 42.

[0068] A welding protection device is used to protect the outer area of ​​the workpiece welding zone, where the workpiece is located in welding position 42. Specifically, it includes a detection sensor, a push rod 22, a connecting rod 21, a pushing drive component 31, a clamping drive component 11, and clamping protective components 12. The pushing drive component 31 is connected to one end of the push rod 22, and the other end of the push rod 22 is connected to the clamping drive component 11 via the connecting rod 21. That is, the other end of the push rod 22 is connected to the center of the connecting rod 21, and both ends of the connecting rod 21 are connected to the clamping drive components 11. The position of the pushing drive component 31 is fixed, and the pushing drive component 31, through the push rod 22 and the connecting rod, can drive the two clamping drive components 11 to move towards or away from the welding position 42. The two clamping protective components 12 are respectively positioned opposite the two welding positions 42.

[0069] In this application, the push drive 31 is specifically a push cylinder containing a solenoid valve. Since the connector in the air conditioning pipe joint is made of metal, when the air conditioning pipe joint approaches the push cylinder, the magnetic flux in the solenoid valve changes. This change in magnetic flux causes a change in induced electromotive force, which is converted into an output signal to determine whether the air conditioning pipe joint is approaching or moving away from the push cylinder. This enables the detection of whether an air conditioning pipe joint exists at the welding position 42. Simultaneously, a detection sensor is communicatively connected to both the push drive 31 and the clamping drive 11, and is used to control the operation of the push drive 31 and the clamping drive 11 respectively when a workpiece is detected at the welding position 42.

[0070] The clamping drive 11 is connected to the clamping protection 12, and the clamping drive 11 can drive the clamping protection 12 to move towards or away from the workpiece. The clamping protection 12 is provided with a clamping head adapted to the end of the welding area of ​​the workpiece. The width of the clamping head is greater than or equal to the width of the outer area of ​​the welding area of ​​the workpiece. Specifically, the clamping head includes two symmetrically arranged clamping plates 16, each clamping plate 16 having a clamping notch 14. When the two clamping plates 16 abut, the two clamping notches 14 form a notch adapted to the end of the welding area of ​​the workpiece. The clamping protection 12 also includes a slide rail 13 and a slider 15. The clamping plates 16 are fixedly connected to the slider 15, and the slider 15 is slidably connected to the slide rail 13. The output end of the clamping drive 11 is connected to the slider 15. Under the drive of the clamping drive 11, the slider 15 and the clamping plates 16 move together towards or away from each other, so as to clamp or release the workpiece by the two clamping plates 16. When the two clamping plates 16 are in the clamping state of the workpiece, they can isolate the welding area and the outer area of ​​the workpiece, thus protecting the outer area of ​​the welding area. When the two clamping plates 16 are in the released state of the workpiece, the driving component 31 pushes the clamping driving component 11 and the clamping protective component 12 away from the welding position 42.

[0071] In this embodiment, each of the two clamping plates 16 is connected to a clamping drive 11. That is, a push drive 31 is connected to two sets of clamping drive 11 simultaneously through a push rod 22 and a connecting rod. Each set of clamping drive 11 includes two separate clamping drive 11. Each clamping drive 11 is connected to a clamping plate 16. The two clamping drive 11 operate synchronously and control the clamping plates 16 to move in opposite directions, so as to achieve the clamping and releasing of the workpiece by the two clamping plates 16.

[0072] In this application, the detection sensor, the push drive 31, and the clamping drive 11 are connected simultaneously. Specifically, the timing of the operation of the push drive 31 and the clamping drive 11 can be controlled by the detection sensor through a time delay relay or similar means. During the process of clamping and protecting the workpiece, the push drive 31 first moves the clamping drive 11 and the clamping protection 12 closer to the welding turntable, and then the clamping drive 11 moves the clamping protection 12 to clamp the workpiece. During the process of releasing the workpiece, the clamping drive 11 first moves the clamping protection 12 to release the workpiece, and then the push drive 31 moves the clamping drive 11 away from the welding turntable 41.

[0073] In the initial state, the push drive 31 drives the clamping drive 11 and the clamping protection 12 away from the welding turntable 41, and the welding turntable 41 can rotate to the loading and unloading positions. After the welding position 42 in the welding turntable 41 is loaded, the welding turntable 41 rotates to the welding gun position. At this time, the welding position 42 is directly opposite the push drive 31. After the detection sensor detects that the welding position 42 and the workpiece are in place, the push drive 31 drives the clamping drive 11 and the clamping protection 12 to push out through the push rod 22 and the connecting rod until the clamping protection 12 is directly opposite the welding position 42. The clamping drive 11 drives the clamping plate 16 and the slider 15 to move closer to each other along the slide rail 13 until the two clamping plates 16 clamp the workpiece. Since the width of the clamping plate 16 is greater than the width of the workpiece welding area, it can achieve complete coverage of the area outside the workpiece welding area. This ensures that even if there is welding liquid dripping during the welding process, the welding liquid will not drip into the area outside the end of the workpiece welding area, but will drip into the clamping head. The welding liquid in the clamping head can be cleaned by routine cleaning, avoiding the contamination and interference of welding liquid dripping into the workpiece in the prior art.

[0074] After the welding torch completes the welding process, the clamping drive 11 moves the two clamping plates 16 away from the workpiece. Then, the push drive 31 moves the clamping drive 11 away from the welding turntable 41 to avoid interference from the welding protection device on the welding tray.

[0075] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings. In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0076] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0077] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0078] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. 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 welding protection device for protecting the outer area of ​​a workpiece welding zone, the workpiece being located in a welding position (42); characterized in that, The welding protection device includes a detection sensor, a clamping drive (11) and a clamping protection (12), wherein the detection sensor is located on the side of the welding position (42); The clamping drive (11) is connected to the clamping protection (12), and the clamping drive (11) can drive the clamping protection (12) to move toward or away from the workpiece; the clamping protection (12) is provided with a clamping head that is adapted to the end of the welding area of ​​the workpiece, and the width of the clamping head is greater than or equal to the width of the outer area of ​​the welding area of ​​the workpiece; the clamping drive (11) is communicatively connected to the detection sensor.

2. The welding protection device according to claim 1, characterized in that, There are two clamping protective components (12), and the two clamping protective components (12) are located at both ends of the workpiece welding area.

3. The welding protection device according to claim 1, characterized in that, The workpiece is an air conditioner pipe connector, which includes an air conditioner pipe and a connector. The welding area of ​​the air conditioner pipe connector refers to the connection position between the air conditioner pipe and the connector. The connector includes a head and a screw, and the screw has an external thread on its outer side.

4. A welding protection device according to claim 3, characterized in that, When the clamping drive member (11) drives the clamping protective member (12) to abut against the air conditioning pipe connector, the clamping head is located between the air conditioning pipe and the head, and the width of the clamping head is greater than or equal to the width of the connector.

5. A welding protection device according to claim 1, characterized in that, The welding protection device also includes a push rod (22) and a push drive (31), wherein the push drive (31) is connected to one end of the push rod (22) and the other end of the push rod (22) is connected to the clamping drive (11).

6. A welding protection device according to claim 5, characterized in that, The detection sensor is integrated in the push drive component (31).

7. A welding protection device according to claim 5, characterized in that, The welding protection device also includes a connecting rod (21), the other end of the push rod (22) is connected to the center of the connecting rod (21), and the two ends of the connecting rod (21) are respectively connected to the clamping drive (11).

8. A welding protection device according to claim 1, characterized in that, The clamping head includes two symmetrically arranged clamping plates (16), and the clamping plates (16) are provided with clamping notches (14). When the two clamping plates (16) abut together, the two clamping notches (14) form a notch that matches the end of the welding area of ​​the workpiece.

9. A welding protection device according to claim 8, characterized in that, The clamping protective component (12) also includes a slide rail (13) and a slider (15). The clamping plate (16) is fixedly connected to the slider (15), and the slider (15) is slidably connected to the slide rail (13). The output end of the clamping drive component (11) is connected to the slider (15).

10. A welding system, characterized in that, The invention includes a welding apparatus and a welding protection device as described in any one of claims 1-9, wherein the welding protection device is located on the side of the welding position (42) in the welding apparatus.

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