Device for inspecting laser welding quality

Abstract

The utility model relates to a device for inspecting laser welding quality, and belongs to the field of laser welding. Comprising a positioning and jacking mechanism, a pressing mechanism and a rack mechanism, the pressing mechanism is installed on the rack mechanism and arranged above the positioning and jacking mechanism, a detected product body and a welding accessory welded to the detected product body are both arranged on the positioning and jacking mechanism, and the detected product body and the welding accessory are arranged on the rack mechanism. The detected product body abuts against the pressing mechanism, and the welding accessory abuts against the positioning jacking mechanism. According to the utility model, a plurality of welding accessories can be pried at the same time, the consistency and repeatability of prizing force and angle are ensured, and the inspection efficiency and the inspection effectiveness are improved.

Description

Technical Field

[0001] This utility model relates to the field of laser welding, and in particular to a device for inspecting the quality of laser welding. Background Technology

[0002] Currently, after the combined welding is completed, in order to check the welding fusion effect, each weld point needs to be pried up one by one with a spatula to check the internal weld penetration and determine whether the welding is qualified. The production efficiency is extremely low, and different people pry with different force and angle, which leads to different inspection results. In order to improve the efficiency of inspection and the validity of inspection results, a device is needed that can pry up multiple weld points at the same time with consistent prying angle and force. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a device for inspecting the quality of laser welding, so as to solve the above-mentioned problem.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A device for inspecting the quality of laser welding includes: a positioning and lifting mechanism, a pressing mechanism, and a frame mechanism. The pressing mechanism is installed on the frame mechanism and is located above the positioning and lifting mechanism. The product body to be inspected and the welding accessories welded to the product body to be inspected are both located on the positioning and lifting mechanism. The product body to be inspected abuts against the pressing mechanism, and the welding accessories abut against the positioning and lifting mechanism.

[0005] The beneficial effects of this utility model are: the pressing mechanism helps to press the inspected product body with welded accessories onto the positioning and lifting mechanism, and the positioning and lifting mechanism helps to lift and pry the welded accessories off the inspected product body. Moreover, multiple welded accessories can be pried up at the same time, ensuring the consistency and repeatability of the prying force and angle, thereby improving the efficiency and effectiveness of the inspection.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, the positioning and lifting mechanism includes: a base plate, multiple positioning cylinders, multiple lifting cylinders, multiple lifting guide devices, multiple positioning plates, multiple ejector pins, a lifting plate, and an ejector pin plate; multiple positioning cylinders are disposed on the base plate, and their output shafts are connected to the pressing mechanism; multiple ejector pins are fixedly installed on the ejector pin plate; the lifting plate is disposed above the ejector pin plate; the positioning plate is disposed above the lifting plate; the ejector pins pass through the lifting plate and the positioning plate; the lifting guide devices are installed at the top of the base plate and connected to the lifting plate and the ejector pin plate; the positioning plate is installed at the top of the lifting guide devices; the lifting cylinders are disposed at the bottom of the base plate, and their output shafts pass through the base plate and are connected to the bottom of the ejector pin plate.

[0008] The beneficial effects of adopting the above-mentioned further solution are: the lifting cylinder is conducive to moving the ejector plate and the lifting plate up and down along the lifting guide device, thereby realizing the up and down movement of the ejector. When the ejector moves upward to pass through the positioning plate, all welding accessories can be lifted and pried off the inspected product body at the same angle. By setting the output air pressure of multiple lifting cylinders to be consistent, the consistency of the force used to pry up the welding accessories can be ensured.

[0009] Furthermore, the lifting and guiding device includes a guide support rod and a lifting linear bearing. The guide support rod passes through the lifting plate and the ejector plate, and its top and bottom ends are connected to the bottom end of the positioning plate and the top end of the base plate, respectively. The lifting linear bearing is connected to the lifting plate and the ejector plate and is slidably mounted on the guide support rod.

[0010] The beneficial effect of adopting the above-mentioned further solution is that the lifting linear bearing is slidably installed on the guide support rod, which is conducive to driving the ejector plate and the lifting plate to slide up and down along the guide support rod, thereby realizing the up and down displacement of multiple ejector pins installed on the ejector plate.

[0011] Furthermore, the top of the positioning plate is provided with a plurality of positioning protrusions, and the positioning protrusions are provided with positioning lifting holes. The positioning lifting holes are through holes, and the ejector pin can move up and down through the positioning lifting holes. The inspected product body and the welding accessories are provided on the positioning protrusions.

[0012] The advantages of adopting the above-mentioned further solution are: the positioning bump is helpful for providing positioning for the installation of the product body under inspection, and the positioning lifting hole is helpful for providing a channel for the ejector pin to abut against the welding accessory after passing through the positioning bump.

[0013] Furthermore, the inspected product body is provided with a first through hole for the ejector pin to pass through, and the positioning and lifting hole is provided below the first through hole. The ejector pin passes through the positioning and lifting hole and the first through hole and abuts against the welding accessory, thereby prying up the welding accessory.

[0014] The beneficial effect of adopting the above-mentioned further solution is that it facilitates providing a channel for the ejector pin to pass through the body of the product under inspection and prying up all the welded accessories on the body of the product under inspection with the same force.

[0015] Furthermore, the pressing mechanism includes: multiple pressing cylinders, multiple pressing guide devices, two connecting devices, multiple pressing plates, multiple pressing devices, and multiple floating joints; the two connecting devices are arranged side by side and installed on the frame mechanism, the connecting devices are connected to the output shaft of the positioning cylinder, the pressing guide devices and the floating joints are both installed on the connecting devices, the pressing plate is connected to the pressing guide devices, the multiple pressing cylinders are installed on the pressing plate, and the output shafts pass through the pressing plate and are connected to the multiple floating joints one by one, the pressing devices are installed on the pressing plate and abut against the inspected product body.

[0016] The beneficial effects of adopting the above-mentioned further solution are: the connection device is installed on the frame mechanism, which is conducive to providing support for the output shaft of the pressure cylinder to push out and retract, thereby allowing multiple pressure devices installed on the pressure plate to move up and down along the pressure guide device until they abut against the inspected product body on the positioning plate, providing downward pressure for the subsequent ejector pin to pry up the welding accessories.

[0017] Furthermore, the connecting device includes a sliding plate and multiple positioning blocks; the positioning blocks are disposed at the bottom end of the sliding plate, and the positioning blocks are provided with through holes adapted to connect with the output shaft of the positioning cylinder; the sliding plate is mounted on the frame mechanism, and the downward pressure guide device and the floating joint are both mounted on the top end of the sliding plate.

[0018] The advantages of adopting the above-mentioned further solution are: the positioning block is connected to the output shaft of the positioning cylinder, which is beneficial to provide support for the operation of the lifting cylinder in the positioning lifting mechanism; the sliding plate is beneficial to slide the pressing mechanism on the frame mechanism, thereby adjusting the different working positions of the positioning lifting mechanism and the pressing mechanism on the frame mechanism.

[0019] Furthermore, the downward guiding device includes: a downward linear bearing, a guide rod, and a guide rod support; the guide rod support is installed at the top of the sliding plate, the bottom end of the guide rod is fixedly connected to the guide rod support, the guide rod passes through the downward pressure plate, and the downward linear bearing is connected to the downward pressure plate and slidably installed on the guide rod.

[0020] The beneficial effect of adopting the above-mentioned further solution is that the pressure linear bearing is slidably mounted on the guide rod, which is conducive to driving the pressure plate and multiple pressure devices mounted on the pressure plate to move up and down along the guide rod, thereby making the pressure device come into contact with the product body being inspected.

[0021] Furthermore, the frame mechanism includes: a profile frame, two linear guide rails and multiple sliders; the two linear guide rails are respectively arranged on both sides of the top of the profile frame, and the multiple sliders are respectively slidably arranged on the two linear guide rails, with the sliding plate mounted on the slider.

[0022] The beneficial effect of adopting the above-mentioned further solution is that the slider facilitates the sliding plate to slide on the linear guide rail, thereby enabling the positioning lifting mechanism and the pressing mechanism to work at different parts of the profile frame.

[0023] Furthermore, the pressing device includes: a pressure head, multiple compression springs, and multiple equal-height screws; the equal-height screws pass through the pressure plate and are connected to the top of the pressure head; the top and bottom of the compression springs are connected one-to-one to the bottom surface of the pressure plate and the top of the pressure head; and the bottom of the pressure head abuts against the body of the product being inspected.

[0024] The beneficial effects of adopting the above-mentioned further solution are: the equal height screw helps to ensure the spatial consistency of all pressure heads, and the compression spring helps to adapt to the unevenness of the product body after the pressure head comes into contact with the product body, so that all parts of the product body that are contacted by the pressure head are subjected to the same magnitude of force. Attached Figure Description

[0025] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0026] Figure 2 A schematic diagram of the positioning and lifting mechanism provided in this embodiment of the utility model;

[0027] Figure 3 An enlarged schematic diagram of the positioning protrusion provided in an embodiment of this utility model;

[0028] Figure 4 This is a schematic diagram of the pressing mechanism provided in an embodiment of the present utility model;

[0029] Figure 5 This is a schematic diagram of the frame mechanism provided in an embodiment of the present utility model;

[0030] Figure 6 An enlarged schematic diagram of the welding accessory provided in this embodiment of the utility model before it is pried up by the ejector pin;

[0031] Figure 7 An enlarged schematic diagram of the welding accessory provided in this embodiment of the utility model after it has been pried up by the ejector pin.

[0032] The attached diagram lists the components represented by each number as follows:

[0033] 1. Positioning and lifting mechanism; 2. Pressing mechanism; 3. Frame mechanism; 4. Inspected product body; 5. Welding accessories; 11. Base plate; 12. Positioning cylinder; 13. Lifting cylinder; 14. Lifting guide device; 15. Positioning plate; 16. Ejector pin; 17. Lifting plate; 18. Ejector pin plate; 21. Pressing cylinder; 22. Pressing guide device; 23. Connecting device; 24. Pressing plate; 25. Pressing device; 26. Floating joint; 31. Profile frame; 32. Linear guide rail; 33. Slider; 141. Guide support rod; 142. Lifting linear bearing; 151. Positioning protrusion; 152. Positioning and lifting hole; 221. Pressing linear bearing; 222. Guide rod; 223. Guide rod support; 231. Sliding plate; 232. Positioning block; 251. Pressure head; 252. Compression spring; 253. Equal height screw. Detailed Implementation

[0034] The principles and features of this utility model are described below. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0035] like Figures 1 to 7 As shown, an apparatus for inspecting the quality of laser welding includes: a positioning and lifting mechanism 1, a pressing mechanism 2, and a frame mechanism 3. The pressing mechanism 2 is mounted on the frame mechanism 3 and is positioned above the positioning and lifting mechanism 1. The product body 4 to be inspected and the welding attachment 5 welded to the product body 4 to be inspected are both mounted on the positioning and lifting mechanism 1. The product body 4 to be inspected abuts against the pressing mechanism 2, and the welding attachment 5 abuts against the positioning and lifting mechanism 1.

[0036] The beneficial effects of this utility model are: the pressing mechanism helps to press the inspected product body with welded accessories onto the positioning and lifting mechanism, and the positioning and lifting mechanism helps to lift and pry the welded accessories off the inspected product body. Moreover, multiple welded accessories can be pried up at the same time, ensuring the consistency and repeatability of the prying force and angle, thereby improving the efficiency and effectiveness of the inspection.

[0037] Preferred, such as Figure 2As shown, the positioning and lifting mechanism 1 includes: a base plate 11, multiple positioning cylinders 12, multiple lifting cylinders 13, multiple lifting guide devices 14, multiple positioning plates 15, multiple ejector pins 16, a lifting plate 17, and an ejector pin plate 18; the multiple positioning cylinders 12 are disposed on the base plate 11, and their output shafts are connected to the pressing mechanism 2; the multiple ejector pins 16 are fixedly installed on the ejector pin plate 18; the lifting plate 17 is disposed above the ejector pin plate 18; the positioning plate 15 is disposed above the lifting plate 17; the ejector pins 16 pass through the lifting plate 17 and the positioning plate 15; the lifting guide devices 14 are installed at the top of the base plate 11 and are connected to the lifting plate 17 and the ejector pin plate 18; the positioning plate 15 is installed at the top of the lifting guide devices 14; the lifting cylinders 13 are disposed at the bottom of the base plate 11, and their output shafts pass through the base plate 11 and are connected to the bottom of the ejector pin plate 18.

[0038] The advantages of adopting the above-mentioned preferred solution are: the lifting cylinder is conducive to moving the ejector plate and the lifting plate up and down along the lifting guide device, thereby realizing the up and down movement of the ejector. When the ejector moves upward to pass through the positioning plate, all welding accessories can be lifted and pried off the inspected product body at the same angle. By setting the output air pressure of multiple lifting cylinders to be consistent, the consistency of the force used to pry up the welding accessories can be ensured.

[0039] Preferred, such as Figure 2 As shown, the lifting and guiding device 14 includes a guide support rod 141 and a lifting linear bearing 142. The guide support rod 141 passes through the lifting plate 17 and the ejector plate 18, and its top and bottom ends are connected to the bottom end of the positioning plate 15 and the top end of the base plate 11 respectively. The lifting linear bearing 142 is connected to the lifting plate 17 and the ejector plate 18 and is slidably mounted on the guide support rod 141.

[0040] The advantages of adopting the above preferred solution are: the lifting linear bearing is slidably installed on the guide support rod, which is conducive to driving the ejector plate and the lifting plate to slide up and down along the guide support rod, thereby realizing the up and down displacement of multiple ejector pins installed on the ejector plate.

[0041] Preferred, such as Figure 3 , Figure 6 and Figure 7 As shown, the top of the positioning plate 15 is provided with a plurality of positioning protrusions 151, and the positioning protrusions 151 are provided with positioning lifting holes 152. The positioning lifting holes 152 are through holes, and the ejector pin 16 can move up and down through the positioning lifting holes 152. The inspected product body 4 and the welding accessory 5 are provided on the positioning protrusions 151.

[0042] The advantages of adopting the above preferred solution are: the positioning bump is helpful for providing positioning for the installation of the product body under inspection, and the positioning lifting hole is helpful for providing a channel for the ejector pin to abut against the welding accessory after passing through the positioning bump.

[0043] Preferred, such as Figure 6 and Figure 7 As shown, the inspected product body 4 is provided with a first through hole through which the ejector pin 16 passes. The positioning and lifting hole 152 is provided below the first through hole. The ejector pin 16 passes through the positioning and lifting hole 152 and the first through hole, and abuts against the welding accessory 5, thereby prying up the welding accessory 5.

[0044] It should be noted that in the preferred embodiment of this utility model, the welding accessory 5 is also provided with a through hole, but the through hole provided on the welding accessory 5 is not concentric with the ejector pin 16 that passes through the positioning lifting hole 152 and the first through hole. That is, the ejector pin 16 will not pass through the through hole provided on the welding accessory 5, but will pry up the welding accessory 5.

[0045] The advantages of adopting the above preferred solution are: it facilitates the provision of a channel for the ejector pin to pass through the body of the product under inspection, and allows all welded accessories on the body of the product under inspection to be pried up with the same force.

[0046] Preferred, such as Figure 4 As shown, the pressing mechanism 2 includes: multiple pressing cylinders 21, multiple pressing guide devices 22, two connecting devices 23, multiple pressing plates 24, multiple pressing devices 25, and multiple floating joints 26; the two connecting devices 23 are arranged side by side and installed on the frame mechanism 3. The connecting devices 23 are connected to the output shaft of the positioning cylinder 12. The pressing guide devices 22 and the floating joints 26 are both installed on the connecting devices 23. The pressing plate 24 is connected to the pressing guide devices 22. The multiple pressing cylinders 21 are installed on the pressing plate 24, and their output shafts pass through the pressing plate 24 and are connected one-to-one with the multiple floating joints 26. The pressing devices 25 are installed on the pressing plate 24 and abut against the inspected product body 4.

[0047] The advantages of adopting the above preferred solution are: the connecting device is installed on the frame mechanism, which is conducive to providing support for the output shaft of the pressing cylinder to push out and retract, so that multiple pressing devices installed on the pressing plate can move up and down along the pressing guide until they come into contact with the inspected product body on the positioning plate, providing downward pressure for the subsequent ejector pin to pry up the welding accessories.

[0048] Preferred, such as Figure 4As shown, the connecting device 23 includes a sliding plate 231 and a plurality of positioning blocks 232; the positioning blocks 232 are disposed at the bottom end of the sliding plate 231, and the positioning blocks 232 are provided with through holes adapted to be connected to the output shaft of the positioning cylinder 12; the sliding plate 231 is mounted on the frame mechanism 3; the pressing guide device 22 and the floating joint 26 are both mounted on the top end of the sliding plate 231.

[0049] The advantages of adopting the above preferred solution are: the positioning block is connected to the output shaft of the positioning cylinder, which is beneficial to provide support for the operation of the lifting cylinder in the positioning lifting mechanism; the sliding plate is beneficial to slide the pressing mechanism on the frame mechanism, thereby adjusting the different working positions of the positioning lifting mechanism and the pressing mechanism on the frame mechanism.

[0050] Preferred, such as Figure 4 As shown, the downward guiding device 22 includes: a downward linear bearing 221, a guide rod 222, and a guide rod support 223; the guide rod support 223 is installed on the top of the sliding plate 231, the bottom end of the guide rod 222 is fixedly connected to the guide rod support 223, the guide rod 222 passes through the downward pressure plate 24, and the downward linear bearing 221 is connected to the downward pressure plate 24 and slidably installed on the guide rod 222.

[0051] The advantages of adopting the above preferred solution are: the downward pressure linear bearing is slidably mounted on the guide rod, which is conducive to driving the downward pressure plate and multiple downward pressure devices mounted on the downward pressure plate to move up and down along the guide rod, so that the downward pressure device comes into contact with the body of the product being inspected.

[0052] Preferred, such as Figure 4 As shown, the frame mechanism 3 includes: a profile frame 31, two linear guide rails 32 and multiple sliders 33; the two linear guide rails 32 are respectively arranged on both sides of the top of the profile frame 31, and the multiple sliders 33 are respectively slidably arranged on the two linear guide rails 32, and the sliding plate 231 is installed on the sliders 33.

[0053] The advantages of adopting the above preferred solution are: the slider facilitates the sliding plate to slide on the linear guide rail, thereby enabling the positioning lifting mechanism and the pressing mechanism to work at different parts of the profile frame.

[0054] Preferred, such as Figure 4 As shown, the pressing device 25 includes: a pressing head 251, a plurality of compression springs 252 and a plurality of equalizing screws 253; the equalizing screws 253 pass through the pressing plate 24 and are connected to the top end of the pressing head 251; the top and bottom ends of the compression springs 252 are connected one-to-one to the bottom surface of the pressing plate 24 and the top end of the pressing head 251; the bottom end of the pressing head 251 abuts against the inspected product body 4.

[0055] The advantages of adopting the above preferred solution are: the equal height screw helps to ensure the spatial consistency of all pressure heads, and the compression spring helps to adapt to the unevenness of the product body after the pressure head comes into contact with the product body, so that all parts of the product body that are contacted by the pressure head are subjected to the same magnitude of force.

[0056] The working process of this utility model is described below:

[0057] like Figures 1 to 7 As shown, the inspected product body 4, which is welded with multiple welding accessories 5, is first placed on multiple positioning protrusions 151 of the positioning plate 15. At this time, multiple first through holes on the inspected product body 4 are all set above the positioning lifting holes 152 on the multiple positioning protrusions 151.

[0058] Then, the pressure cylinder 21 is activated, causing the output shaft of the pressure cylinder 21 to retract, and the pressure plate 24 and the multiple pressure heads 251 mounted on the pressure plate 24 are moved downward along the guide rod 222 until they abut against the top of the product body 4 under inspection. During this process, because the surface of the product body 4 under inspection is uneven, the compression spring 252 above each pressure head 251 will be compressed to different degrees, so that the parts of the surface of the product body 4 under inspection that are abutted by the pressure head 251 are all subjected to the same downward pressure.

[0059] Next, the lifting cylinder 13 is activated, and the output shaft of the lifting cylinder 13 is pushed upward, causing the ejector plate 18 and all the ejector pins 16 fixedly installed on the top of the ejector plate 18 to move upward along the guide support rod 141. During this process, the ejector plate 18 synchronously drives the lifting plate 17 to move upward, and the ejector pins 16 pass through the positioning lifting hole 152 and the first through hole on the inspected product body 4, and then abut against the welding attachment 5. As the output shaft of the lifting cylinder 13 continues to push upward, all the ejector pins 16 will pry up the multiple welding attachments 5 synchronously. The prying force of the multiple welding attachments 5 only needs to keep the air intake pressure of the multiple lifting cylinders 13 consistent.

[0060] Finally, after multiple welding attachments 5 are pried up under the set lifting stroke and lifting force, the operator only needs to observe whether the welding attachments 5 on the inspected product body 4 have detached. If the welding attachments 5 detach from the inspected product body 4, the welding quality is unqualified; otherwise, it is qualified.

[0061] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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 of this utility model.

[0062] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0063] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0064] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0065] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0066] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A device for inspecting the quality of laser welding, characterized in that, include: The system includes a positioning and lifting mechanism (1), a pressing mechanism (2), and a frame mechanism (3). The pressing mechanism (2) is mounted on the frame mechanism (3) and is positioned above the positioning and lifting mechanism (1). The inspected product body (4) and the welding accessories (5) welded to the inspected product body (4) are both mounted on the positioning and lifting mechanism (1). The inspected product body (4) abuts against the pressing mechanism (2), and the welding accessories (5) abut against the positioning and lifting mechanism (1).

2. The device for inspecting the quality of laser welding according to claim 1, characterized in that, The positioning and lifting mechanism (1) includes: a base plate (11), multiple positioning cylinders (12), multiple lifting cylinders (13), multiple lifting guide devices (14), multiple positioning plates (15), multiple ejector pins (16), a lifting plate (17), and an ejector pin plate (18); Multiple positioning cylinders (12) are disposed on the base plate (11), and their output shafts are connected to the pressing mechanism (2). Multiple ejector pins (16) are fixedly installed on the ejector plate (18). The lifting plate (17) is disposed above the ejector plate (18). The positioning plate (15) is disposed above the lifting plate (17). The ejector pins (16) pass through the lifting plate (17) and the positioning plate (15). The lifting guide device (14) is installed at the top of the base plate (11) and is connected to the lifting plate (17) and the ejector plate (18). The positioning plate (15) is installed at the top of the lifting guide device (14). The lifting cylinder (13) is disposed at the bottom of the base plate (11), and its output shaft passes through the base plate (11) and is connected to the bottom of the ejector plate (18).

3. The device for inspecting the quality of laser welding according to claim 2, characterized in that, The lifting guide device (14) includes a guide support rod (141) and a lifting linear bearing (142). The guide support rod (141) passes through the lifting plate (17) and the ejector plate (18), and its top and bottom ends are connected to the bottom end of the positioning plate (15) and the top end of the base plate (11) respectively. The lifting linear bearing (142) is connected to the lifting plate (17) and the ejector plate (18) and is slidably mounted on the guide support rod (141).

4. The device for inspecting the quality of laser welding according to claim 2, characterized in that, The top of the positioning plate (15) is provided with a plurality of positioning protrusions (151), and the positioning protrusions (151) are provided with positioning lifting holes (152). The positioning lifting holes (152) are through holes, and the ejector pin (16) can move up and down through the positioning lifting holes (152). The inspected product body (4) and the welding accessory (5) are provided on the positioning protrusions (151).

5. The apparatus for inspecting the quality of laser welding according to claim 4, characterized in that, The inspected product body (4) is provided with a first through hole through which the ejector pin (16) passes. The positioning lifting hole (152) is located below the first through hole. The ejector pin (16) passes through the positioning lifting hole (152) and the first through hole and abuts against the welding accessory (5) to pry up the welding accessory (5).

6. The apparatus for inspecting the quality of laser welding according to claim 2, characterized in that, The pressing mechanism (2) includes: multiple pressing cylinders (21), multiple pressing guide devices (22), two connecting devices (23), multiple pressing plates (24), multiple pressing devices (25), and multiple floating joints (26); Two connecting devices (23) are arranged side by side and installed on the frame mechanism (3). The connecting device (23) is connected to the output shaft of the positioning cylinder (12). The pressing guide device (22) and the floating joint (26) are both installed on the connecting device (23). The pressing plate (24) is connected to the pressing guide device (22). Multiple pressing cylinders (21) are installed on the pressing plate (24), and their output shafts pass through the pressing plate (24) and are connected to multiple floating joints (26) one by one. The pressing device (25) is installed on the pressing plate (24) and abuts against the inspected product body (4).

7. The apparatus for inspecting the quality of laser welding according to claim 6, characterized in that, The connecting device (23) includes a sliding plate (231) and a plurality of positioning blocks (232); the positioning blocks (232) are disposed at the bottom end of the sliding plate (231), and the positioning blocks (232) are provided with through holes adapted to be connected to the output shaft of the positioning cylinder (12); the sliding plate (231) is mounted on the frame mechanism (3); the pressing guide device (22) and the floating joint (26) are both mounted on the top end of the sliding plate (231).

8. The apparatus for inspecting the quality of laser welding according to claim 7, characterized in that, The downward guiding device (22) includes: a downward linear bearing (221), a guide rod (222), and a guide rod support (223); the guide rod support (223) is installed on the top of the sliding plate (231), the bottom end of the guide rod (222) is fixedly connected to the guide rod support (223), the guide rod (222) passes through the downward pressure plate (24), the downward linear bearing (221) is connected to the downward pressure plate (24), and is slidably installed on the guide rod (222).

9. The apparatus for inspecting the quality of laser welding according to claim 7, characterized in that, The frame mechanism (3) includes: a profile frame (31), two linear guide rails (32) and multiple sliders (33); the two linear guide rails (32) are respectively arranged on both sides of the top of the profile frame (31), and the multiple sliders (33) are respectively slidably arranged on the two linear guide rails (32), and the sliding plate (231) is installed on the sliders (33).

10. The apparatus for inspecting the quality of laser welding according to claim 6, characterized in that, The pressing device (25) includes: a pressing head (251), multiple compression springs (252) and multiple equal-height screws (253); the equal-height screws (253) pass through the pressing plate (24) and are connected to the top end of the pressing head (251); the top and bottom ends of the compression springs (252) are connected to the bottom surface of the pressing plate (24) and the top end of the pressing head (251) respectively; and the bottom end of the pressing head (251) abuts against the body of the product being inspected (4).

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