A spot welder for processing automotive parts

Abstract

The present invention relates to the technical field of spot welding machines. The present invention provides a spot welding machine for processing automotive parts, including a mounting frame. On one side of the top of the mounting frame, a plurality of spot welding devices are provided. It also includes a sliding frame and a feeding tray. The sliding frame is fixedly connected to the mounting frame. A moving support is horizontally slidably arranged on the top of the sliding frame. A bottom moving mechanism with a positioning function is arranged at the bottom of the sliding frame. The bottom moving mechanism is used to drive the moving support to move horizontally. Among them, the moving support moves horizontally on the top of the bottom moving mechanism. A rotating shaft is arranged at the bottom of the moving support, and the moving support offsets along the center point of the rotating shaft. Through the above technical solution, the technical problem in the prior art that during the welding process of automotive parts, because the welding points between the automotive trough frame and multiple automotive parts are relatively scattered, the parts to be welded need to be repeatedly moved between spot welding machines multiple times is solved.

Description

Technical Field

[0001] Embodiments of the present invention relate to the technical field of spot welding machines, and more specifically, to a spot welding machine for processing automotive parts. Background Art

[0002] A spot welding machine is a commonly used metal component for welding metals in the prior art. In automobile manufacturing, spot welding machines play a crucial role. There are almost thousands of weld points on each automobile. Therefore, in the complete automobile processing and production process, welding operations on the automobile frame and a large number of automobile parts are an important part of automobile processing and production. When welding an automobile, multiple spot welding machines are required. For example, spot welding robot equipment installed on the automobile assembly production line is used to complete the welding operation during the assembly process of the automobile frame. When more small parts are connected to the metal trough on the automobile frame, a special vertical spot welding machine is required. First, multiple small parts are installed at the corresponding positions of the automobile trough, and then the clamping and conveying device drives the automobile trough and multiple automobile parts to move, so that the automobile trough and the automobile parts move between two longitudinally corresponding output ends of the vertical spot welding machine, and the vertical spot welding machine performs corresponding spot welding operations on the automobile trough.

[0003] Even for one of the automobile troughs on the automobile frame, there are dozens of weld points. Due to the differences in the thickness of the welded automobile parts and the welding areas, there are also certain differences in the power of the used spot welding machines. It is difficult to ensure the welding quality of automobile parts by using unified output parameters. Therefore, multiple spot welding machines are often used in cooperation, and the output powers of multiple spot welding machines are adjusted so that each spot welding machine performs welding operations on the corresponding weld points. However, because the weld points between the automobile trough and multiple automobile parts are relatively scattered, when a single clamping and conveying device is used to move the automobile trough, it can mostly only perform linear conveying of the automobile trough, enabling multiple spot welding machines to weld multiple weld points located on the same reference line, resulting in the welded parts needing to move between the spot welding machines repeatedly, which makes the welding process of the automobile trough relatively repetitive and affects the welding efficiency of the automobile trough. Summary of the Invention

[0004] To overcome the above defects, embodiments of the present invention provide a spot welding machine for processing automotive parts, which solves the technical problem in the related art that during the welding process of automotive parts, due to the relatively scattered weld points between the automobile trough and multiple automobile parts, the welded parts need to move between the spot welding machines repeatedly.

[0005] A spot welder for processing automotive parts provided by the present invention includes an installation frame, and a plurality of spot welding devices are arranged on one side of the top of the installation frame. It further includes:

[0006] A sliding frame, which is fixedly connected to the installation frame. A moving support is horizontally slidably arranged on the top of the sliding frame. A bottom moving mechanism with a positioning function is arranged at the bottom of the sliding frame, and the bottom moving mechanism is used to drive the moving support to move horizontally.

[0007] Among them, the moving support moves horizontally on the top of the bottom moving mechanism. A rotating shaft is arranged at the bottom of the moving support, and the moving support offsets along the center point of the rotating shaft.

[0008] A feeding tray, which is slidably arranged on the moving support. A tray positioning component for monitoring the moving distance of the feeding tray is arranged on the moving support, and a component clamping mechanism with adjustable clamping position is arranged on the feeding tray.

[0009] In order to horizontally adjust the position of the moving support, further, the bottom moving mechanism includes a sliding chamber and a moving positioning component. The sliding chamber is arranged at the bottom of the sliding frame. A sliding seat is slidably connected in the sliding chamber. A lead screw transmission structure is arranged in the sliding chamber. The sliding seat is threadedly connected to the lead screw transmission structure. The rotating shaft is rotatably connected to the sliding seat. A moving positioning component is arranged between the sliding seat and the sliding frame, and the moving positioning component is used to determine the moving position of the sliding seat in the sliding chamber.

[0010] In order to monitor the moving position of the moving support, further, the moving positioning component includes a rotating wheel and a friction strip. A through groove is opened in the middle of the sliding seat. The rotating wheel is rotatably connected in the through groove. An encoder is arranged between the rotating wheel and the through groove. The friction strip is fixedly connected to the sliding frame, the friction strip penetrates through the through groove, and the friction strip contacts the rotating wheel.

[0011] In order to drive the rotating shaft to rotate, further, a gear box is drivably arranged on the rotating shaft. A first driving motor is arranged at the top of the sliding seat, and the output end of the first driving motor is in driving cooperation with the gear box.

[0012] In order to drive the feeding tray to move horizontally on the moving support, further, a rectangular tray is fixedly connected to the bottom of the feeding tray. The rectangular tray is slidably connected to the inner wall of the moving support, and a horizontal moving component is arranged between the rectangular tray and the moving support.

[0013] In order to further, the tray positioning assembly includes a sliding groove body and a ranging sensor. The sliding groove body is fixedly connected to the moving support. The inner wall length of the sliding groove body corresponds to the moving distance of the rectangular tray within the moving support. A sliding protrusion is provided at the bottom of the rectangular tray, and the sliding protrusion is slidably connected within the sliding groove body. The ranging sensor is provided on one side of the sliding groove body and is matched with the sliding protrusion.

[0014] In order to clamp the automotive trough frame and automotive parts that need to be welded, further, the parts clamping mechanism includes distance-adjusting slide rails, clamping discs, and opposing clamping seats. The number of the distance-adjusting slide rails is set to be multiple. The distance-adjusting slide rails are slidably connected to the feeding tray. A sliding block is slidably connected to the distance-adjusting slide rails. The clamping disc is rotatably connected to the sliding block through a rotating shaft. A moving adjustment assembly for laterally moving multiple rotating shafts is provided on the feeding tray. The opposing clamping seats are slidably connected to each of the distance-adjusting slide rails. An installation slide block is fixedly connected to the distance-adjusting slide rail, and the installation slide block is slidably arranged through the feeding tray. A distance-adjusting screw is threadedly connected between the opposing clamping seat and the installation slide block.

[0015] In order to enable the clamping disc to clamp automotive parts, further, rectangular support grooves, W-shaped support grooves, and arc-shaped support grooves are sequentially formed in a circular pattern on the clamping disc for corresponding to the outer shapes of automotive parts with different shapes. Among them, a plurality of arc-shaped slopes are provided on the circumference of the clamping disc.

[0016] In order to adjust the positions of multiple clamping discs, further, the moving adjustment assembly includes an adjustment chute and a driving electric cylinder. A plurality of spring dampers are slidably arranged on the adjustment chute. The spring dampers correspond to the rotating shafts one by one. A rotating member is arranged between the spring damper and the rotating shaft. The driving electric cylinder is provided on the feeding tray, and the output end of the driving electric cylinder is fixedly connected to the adjustment chute.

[0017] In order to cooperate with the clamping disc to clamp automotive parts, further, a flat surface, an arc surface, and a right-angle end surface are sequentially arranged from bottom to top on the side of the opposing clamping seat close to the clamping disc. An elastic pad is also provided on the opposing clamping seat.

[0018] The beneficial effects of the embodiments of the present invention are:

[0019] In the present invention, when spot welding an automotive trough rack and multiple automotive parts simultaneously, first place the automotive trough rack and the multiple automotive parts in a feeding tray, then adjust the positions of multiple clamping disks and multiple opposing clamping seats so that the automotive trough rack is fixedly clamped between the multiple clamping disks and the multiple opposing clamping seats. Determine the spot welding area responsible for each spot welding device, and then drive the moving support by the bottom moving mechanism to move so that each spot welding area passes through the bottom of the output end of the spot welding device. When it is necessary to make the welding points at different lateral positions correspond to the position of the output end of the spot welding device, first drive the moving support to offset by the rotating shaft, and also offset the angle of the feeding tray. Because after the feeding tray drives the positions of the automotive trough rack and the automotive parts to offset, there is a certain deviation between the welding points of the automotive trough rack and the automotive parts and the output end of the spot welding device. At this time, drive the feeding tray to move laterally by the lateral moving assembly to precisely adjust the positions of the automotive trough rack and the automotive parts. Monitor the moving position of the feeding tray through the tray positioning assembly to ensure that the automotive trough rack and the automotive parts are accurately moved to the bottom of the output end of the spot welding device when moving. Using the above method, the welding points between the automotive trough rack and the automotive parts are sequentially moved to the bottom of the output end of the spot welding device, completing the welding operation of the automotive trough rack and the multiple automotive parts, and realizing welding operation on the corresponding welding points between the automotive trough rack and the automotive parts during the lateral movement of the automotive trough rack and the automotive parts, improving the welding convenience of the automotive trough rack and the automotive parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for description in the embodiments of the present invention. Obviously, the drawings in the following description are only some exemplary embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the content of the exemplary embodiments of the present invention and these drawings.

[0021] Figure 1 It is a schematic structural diagram of the whole of the present invention;

[0022] Figure 2 It is a schematic structural diagram of the cooperation between the installation rack and the spot welding device in the present invention;

[0023] Figure 3 It is a schematic structural diagram of a partial cross-section of the present invention;

[0024] Figure 4 It is a schematic structural diagram of a partial cross-section of the cooperation between the sliding rack, the moving support, the rotating shaft and the feeding tray in the present invention;

[0025] Figure 5Schematic structural diagram of the cooperation of the sliding seat, rotating wheel, rotating shaft, moving support and rectangular tray in the present invention;

[0026] Figure 6 Schematic structural diagram of the partial cross-section of the cooperation of the moving support, rectangular tray, sliding groove body, sliding protrusion and distance measuring sensor in the present invention;

[0027] Figure 7 Schematic structural diagram of the cooperation of the feeding tray, distance adjustment slide rail, clamping disc and opposing clamping seat in the present invention;

[0028] Figure 8 Schematic structural diagram of the cooperation of the spring damper, rotating member and rotating shaft in the present invention;

[0029] Figure 9 Schematic structural diagram of the cooperation of the clamping disc, rectangular support groove, W-shaped support groove, arc-shaped support groove and arc-shaped slope surface in the present invention;

[0030] Figure 10 Schematic structural diagram of the cooperation of the opposing clamping seat, flat surface, arc-shaped surface, right-angle end surface and elastic pad in the present invention.

[0031] In the figure: 1. Installation frame; 2. Spot welding equipment; 3. Sliding frame; 4. Moving support; 5. Rotating shaft; 6. Feeding tray; 7. Sliding chamber; 8. Sliding seat; 9. Rotating wheel; 10. Encoder; 11. Friction strip; 12. Gear box; 13. First driving motor; 14. Rectangular tray; 15. Sliding groove body; 16. Sliding protrusion; 17. Distance measuring sensor; 18. Distance adjustment slide rail; 19. Clamping disc; 20. Sliding block; 21. Rotating shaft; 22. Opposing clamping seat; 23. Installation slider; 24. Distance adjustment screw; 25. Rectangular support groove; 26. W-shaped support groove; 27. Arc-shaped support groove; 28. Arc-shaped slope surface; 29. Adjustment sliding groove; 30. Spring damper; 31. Rotating member; 32. Driving electric cylinder; 33. Flat surface; 34. Arc-shaped surface; 35. Right-angle end surface; 36. Elastic pad; 37. Transmission lead screw; 38. Motor driving equipment; 39. Transmission tooth plate; 40. Driving gear; 41. Second driving motor. Detailed implementation manners

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention.

[0033] To simplify the drawings, only the parts related to the disclosure are schematically shown in each figure, and they do not represent the actual structure of the product. Additionally, to simplify the drawings for better understanding, for components with the same structure or function in some figures, only one of them is schematically shown, or only one of them is labeled. In this text, "one" not only means "only this one", but also can mean "more than one", and "several" includes "two" and "more than two".

[0034] In this text, it should be noted that unless otherwise clearly specified and defined, the terms "install", "connect", and "link" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0035] In the present invention, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature can include the direct contact between the first and second features, or can also include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "under", and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the first feature has a lower horizontal height than the second feature.

[0036] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "left", and "right" are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present invention.

[0037] Additionally, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions, and cannot be understood as indicating or implying relative importance.

[0038] Such as Figures 1 to 10As shown in the figure, the present invention discloses a spot welder for processing automotive parts, including an installation frame 1. On one side of the top of the installation frame 1, a plurality of spot welding devices 2 are provided. The spot welding devices 2 are common spot welding devices in the prior art and are well-known prior art devices to those skilled in the art. By moving the automotive trough frame and automotive parts between the two electrodes of the spot welding device 2, and then making the two electrodes contact the welding points between the automotive trough frame and automotive parts, the plurality of spot welding devices 2 sequentially weld the multiple welding points within their respective welding areas;

[0039] It further includes a sliding frame 3. The sliding frame 3 is fixedly connected to the installation frame 1. A moving support 4 is horizontally slidably arranged on the top of the sliding frame 3. A bottom moving mechanism with a positioning function is arranged at the bottom of the sliding frame 3. The bottom moving mechanism is used to drive the moving support 4 to move horizontally. The bottom moving mechanism includes a sliding chamber 7 and a moving positioning component. A sliding chamber 7 is arranged at the bottom of the sliding frame 3. A sliding seat 8 is slidably connected within the sliding chamber 7. A lead screw transmission structure is arranged within the sliding chamber 7. The sliding seat 8 is threadedly connected to the lead screw transmission structure. The lead screw transmission structure includes a transmission lead screw 37. The transmission lead screw 37 is rotatably connected within the sliding chamber 7. The transmission lead screw 37 is threadedly connected to the sliding seat 8. A motor driving device 38 is arranged on the sliding frame 3. The output end of the motor driving device 38 is fixedly connected to the transmission lead screw 37. When it is necessary to drive the material placing tray 6 to move horizontally, start the motor driving device 38 to drive the transmission lead screw 37 to rotate, so that the transmission lead screw 37 drives the sliding seat 8 to move horizontally, and the moving support 4 drives the material placing tray 6 to move horizontally. A rotating shaft 5 is rotatably connected to the sliding seat 8. A moving positioning component is arranged between the sliding seat 8 and the sliding frame 3. The moving positioning component is used to determine the moving position of the sliding seat 8 within the sliding chamber 7. When the sliding seat 8 drives the moving support 4 to move, the multiple welding points on the automotive trough frame and automotive parts sequentially pass through the output end area of the spot welding device 2. When spot welding the welding points at different positions on the automotive trough frame and automotive parts, the moving support 4 and the rotating shaft 5 rotate together around the center point of the rotating shaft 5 on the sliding seat 8 to adjust the positions of the automotive trough frame and automotive parts;

[0040] The mobile positioning assembly includes a rotating wheel 9 and a friction strip 11. A through slot is provided in the middle of the sliding seat 8. The rotating wheel 9 is rotatably connected in the through slot. An encoder 10 is provided between the rotating wheel 9 and the through slot. A friction strip 11 is fixedly connected to the sliding frame 3. The friction strip 11 passes through the through slot and contacts the rotating wheel 9. When the sliding seat 8 moves laterally, in order to ensure that the positions of the welding points of the automobile slot frame and automobile parts correspond to the output end of the spot welding equipment 2, it is necessary to monitor the moving position of the sliding seat 8 in real time. During the movement of the sliding seat 8, The rotating wheel 9 will move on the friction strip 11, and the rotating wheel 9 will rotate during the movement. During the rotation of the rotating wheel 9, the number of rotations of the rotating wheel 9 is monitored by the encoder 10, so as to determine the moving position of the sliding wheel. The encoder 10 is an important detection device that matches the system in the prior art. It is a prior art device well known to those skilled in the art. It adopts the sensor principle to prompt the user. A supporting protrusion is provided in the top inner wall of the sliding frame 3, and the bottom end of the movable support 4 contacts the inner bottom wall of the supporting protrusion.

[0041] Among them, the movable support 4 moves laterally at the top of the bottom moving mechanism, and a rotating shaft 5 is provided at the bottom of the movable support 4. The movable support 4 is offset along the center point of the rotating shaft 5. A gear box 12 is provided on the rotating shaft 5 for transmission, and a first drive motor 13 is provided on the top of the sliding seat 8. The output end of the first drive motor 13 is matched with the gear box 12 for transmission. In order to drive the rotating shaft 5 to rotate, by starting the first drive motor 13, the rotating shaft 5 is driven to rotate on the sliding seat 8 under the action of the gear box 12. The gear box 12 is a common device in the prior art that cooperates with driving devices such as motors. It is a prior art device known to those skilled in the art. By using the gear box 12, the first drive motor 13 can drive the rotating shaft 5 to move precisely in a small range, which is convenient for precise control of the rotation angle of the rotating shaft 5.

[0042] The bottom of the discharge tray 6 is fixedly connected to a rectangular tray 14, and the rectangular tray 14 is slidably connected to the inner wall of the movable support 4. A lateral movement component is arranged between the rectangular tray 14 and the movable support 4, and the lateral movement component includes a second drive motor 41. The second drive motor 41 is arranged on the movable support 4. A transmission gear plate 39 is provided at the bottom of the rectangular tray 14, and a drive gear 40 is engaged with the transmission gear 40. The drive gear 40 is arranged on the output end of the second drive motor 41. When it is necessary to drive the rectangular tray 14 and the discharge tray 6 to move laterally, the second drive motor 41 is started, and the rectangular tray 14 and the discharge tray 6 are driven to move laterally through the meshing effect of the drive gear 40 and the transmission gear plate 39.

[0043] The feeding tray 6 is slidably arranged on the moving support 4. A tray positioning component for monitoring the moving distance of the feeding tray 6 is arranged on the moving support 4. The tray positioning component includes a sliding groove body 15 and a ranging sensor 17. The sliding groove body 15 is fixedly connected to the moving support 4. The inner wall length of the sliding groove body 15 corresponds to the moving distance of the rectangular tray 14 within the moving support 4. A sliding protrusion 16 is arranged at the bottom of the rectangular tray 14. The sliding protrusion 16 is slidably connected within the sliding groove body 15. A ranging sensor 17 is arranged on one side of the sliding groove body 15. The ranging sensor 17 cooperates with the sliding protrusion 16. When driving the rectangular tray 14 to move horizontally, in order to detect the moving position of the rectangular tray 14 and ensure that the welding points of the vehicle trough rack and vehicle parts correspond to the output end of the spot welding device 2, during the movement of the rectangular tray 14 on the moving support 4, the sliding protrusion 16 on the rectangular tray 14 will slide within the sliding groove body 15. The position of the sliding protrusion 16 within the sliding groove body 15 is calculated by the ranging sensor 17, thereby judging the position of the rectangular tray 14 within the moving support 4, facilitating the user to detect the moving position of the rectangular tray 14.

[0044] A component clamping mechanism with adjustable clamping position is arranged on the feeding tray 6. The component clamping mechanism includes distance-adjusting slide rails 18, clamping discs 19 and opposing clamping seats 22. The number of the distance-adjusting slide rails 18 is set to be multiple. The distance-adjusting slide rails 18 are slidably connected to the feeding tray 6. A sliding block 20 is slidably connected to the distance-adjusting slide rails 18. The clamping disc 19 is rotatably connected to the sliding block 20 through a rotating shaft 21. A moving adjustment component for moving multiple rotating shafts 21 horizontally is arranged on the feeding tray 6. An opposing clamping seat 22 is slidably connected to each distance-adjusting slide rail 18. An installation slide block 23 is fixedly connected to the distance-adjusting slide rail 18. The installation slide block 23 is slidably arranged through the feeding tray 6. A distance-adjusting screw 24 is threadedly connected between the opposing clamping seat 22 and the installation slide block 23. Since the shapes of the vehicle trough rack and vehicle parts are irregular, in order to perform good clamping operations on the vehicle trough rack and multiple vehicle parts, first, the distance-adjusting slide rails 18 can be moved on the feeding tray 6 to move the positions of the multiple distance-adjusting slide rails 18. Then, the distance-adjusting screw 24 is rotated to adjust the position of the opposing clamping seat 22 on the distance-adjusting slide rail 18. Then, the position of the clamping disc 19 is adjusted through the moving adjustment component, and the vehicle trough rack and multiple vehicle parts are clamped between the multiple clamping discs 19 and the multiple opposing clamping seats 22;

[0045] The clamping disc 19 is successively provided with a rectangular support groove 25, a W-shaped support groove 26 and an arc-shaped support groove 27 on its circumference for corresponding to the outer shapes of different-shaped automotive parts. Among them, a plurality of arc-shaped slopes 28 are arranged on the circumference of the clamping disc 19. Since the position of the vehicle trough rack is irregular and the shapes of various regions on the vehicle trough rack are also different, in order to perform effective clamping operations on the vehicle trough rack, the clamping disc 19 can be rotated. According to the shape of the clamped area of the vehicle trough rack, the corresponding shape on the clamping disc 19 is brought into contact with the vehicle trough rack, so that the outer wall of the vehicle trough rack can enter the rectangular support groove 25, the W-shaped support groove 26 or the arc-shaped support groove 27. For the arc-shaped area of the vehicle trough rack, the arc-shaped slope 28 can be brought into contact with the vehicle trough rack to ensure good clamping performance of the vehicle trough rack.

[0046] The moving and adjusting assembly includes an adjusting chute 29 and a driving electric cylinder 32. A plurality of spring dampers 30 are slidably arranged on the adjusting chute 29. The spring dampers 30 correspond to the rotating shafts 21 one by one. A rotating member 31 is arranged between the spring damper 30 and the rotating shaft 21. The driving electric cylinder 32 is arranged on the feeding tray 6, and the output end of the driving electric cylinder 32 is fixedly connected to the adjusting chute 29. When it is necessary to move the positions of a plurality of clamping discs 19, the driving electric cylinder 32 is started to drive the adjusting chute 29 to move horizontally, pushing the clamping disc 19 towards the opposite clamping seat 22. And in the actual use process, since the outer shape of the vehicle trough rack is not fixed, the contact area between the clamping disc 19 and the vehicle trough rack is also inconsistent. Because the spring damper 30 has elasticity and maintains sufficient elastic performance after stretching, the clamping effect between the clamping disc 19 on the vehicle trough rack and the automotive parts is improved.

[0047] On the side of the opposite clamping seat 22 close to the clamping disc 19, a flat surface 33, an arc surface 34 and a right-angle end surface 35 are successively arranged from bottom to top. An elastic pad 36 is also arranged on the opposite clamping seat 22. Similarly, since the outer shape of the vehicle trough rack is not fixed and the height of the vehicle trough rack also varies, for a higher vehicle trough rack, the bottom wall of the vehicle trough rack is brought into contact with the flat surface 33, and for a shorter vehicle trough rack, the inner bottom wall of the vehicle trough rack is brought into contact with the right-angle end surface 35. For a vehicle trough rack with an arc surface 34, the vehicle trough rack is brought into contact with the arc surface 34, and the vehicle trough rack is brought into contact with the elastic pad 36.

[0048] The working principle of the spot welder for processing automotive parts:

[0049] First, after adjusting the positions of multiple distance-adjusting slide rails 18, the vehicle trough rack and multiple vehicle parts are positioned and placed between the feeding tray 6 and the multiple distance-adjusting slide rails 18. Then, start the driving electric cylinder 32 to drive the adjusting chute 29 to move horizontally, pushing the clamping disc 19 to move towards the opposite clamping seat 22, and the vehicle trough rack and vehicle parts to be welded are fixed between the multiple clamping discs 19 and the multiple opposite clamping seats 22, so that each of the multiple spot welding devices 2 divides the welding equipment. Then, start the motor driving device 38 to drive the transmission lead screw 37 to rotate, so that the transmission lead screw 37 drives the sliding seat 8 to move horizontally, and the moving support 4 drives the feeding tray 6 to move horizontally, so that multiple welding points between the vehicle trough rack and the vehicle parts are sequentially moved to the bottom of the output end of the spot welding device 2;

[0050] When performing spot welding operations on the welding points at different positions on the vehicle trough rack and vehicle parts, the moving support 4 and the rotating shaft 5 rotate together along the center point of the rotating shaft 5 on the sliding seat 8 to adjust the positions of the vehicle trough rack and vehicle parts. After adjusting the inclination angles of the vehicle trough rack and vehicle parts, start the second driving motor 41. Through the meshing effect of the driving gear 40 and the transmission toothed plate 39, drive the rectangular tray 14 and the feeding tray 6 to move horizontally to finely adjust the positions of the vehicle trough rack and vehicle parts, so that the positions between the welding points and the spot welding device 2 are more corresponding;

[0051] In order to ensure the correspondence between the welding points of the vehicle trough rack and vehicle parts and the output end of the spot welding device 2, it is necessary to monitor the moving position of the sliding seat 8 in real time. During the movement of the sliding seat 8, the rotating wheel 9 will move on the friction strip 11, and the rotating wheel 9 will rotate during the movement. During the rotation of the rotating wheel 9, the encoder 10 monitors the number of rotations of the rotating wheel 9 to determine the moving position of the sliding wheel. And during the movement of the rectangular tray 14, the sliding protrusion 16 on the rectangular tray 14 will slide in the sliding groove body 15, and the distance measuring sensor 17 measures the position of the sliding protrusion 16 in the sliding groove body 15 to judge the position of the rectangular tray 14 in the moving support 4.

[0052] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not restrictive. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A spot welder for processing automotive parts, including an installation frame (1), and a plurality of spot welding devices (2) are arranged on one side of the top of the installation frame (1), and it is characterized in that, Further included are: A sliding frame (3), which is fixedly connected to the installation frame (1). A moving support (4) is horizontally slidably arranged on the top of the sliding frame (3). A bottom moving mechanism with a positioning function is arranged at the bottom of the sliding frame (3), and the bottom moving mechanism is used to drive the moving support (4) to move horizontally; Wherein, the moving support (4) moves horizontally on the top of the bottom moving mechanism. A rotating shaft (5) is arranged at the bottom of the moving support (4), and the moving support (4) offsets along the center point of the rotating shaft (5); A feeding tray (6), which is slidably arranged on the moving support (4). A tray positioning component for monitoring the moving distance of the feeding tray (6) is arranged on the moving support (4), and a component clamping mechanism with adjustable clamping positions is arranged on the feeding tray (6); The component clamping mechanism includes: Distance-adjusting sliding rails (18), and the number of the distance-adjusting sliding rails (18) is set to be multiple. The distance-adjusting sliding rails (18) are slidably connected to the feeding tray (6); Clamping discs (19), sliding blocks (20) are slidably connected to the distance-adjusting sliding rails (18), and the clamping discs (19) are rotatably connected to the sliding blocks (20) through rotating shafts (21). A moving adjustment component for moving the plurality of rotating shafts (21) horizontally is arranged on the feeding tray (6); Opposite clamping seats (22), the opposite clamping seats (22) are slidably connected to each of the distance-adjusting sliding rails (18). Mounting sliders (23) are fixedly connected to the distance-adjusting sliding rails (18), and the mounting sliders (23) are slidably arranged through the feeding tray (6). A distance-adjusting screw rod (24) is threadedly connected between the opposite clamping seats (22) and the mounting sliders (23); Rectangular support grooves (25), W-shaped support grooves (26) and arc-shaped support grooves (27) are sequentially arranged in a circle on the clamping disc (19) for corresponding to the outer shapes of different-shaped automotive components; Wherein, a plurality of arc-shaped slopes (28) are arranged in a circle on the clamping disc (19); On the side of the opposite clamping seat (22) close to the clamping disc (19), a flat surface (33), an arc surface (34) and a right-angle end surface (35) are sequentially arranged from bottom to top. An elastic pad (36) is also arranged on the opposite clamping seat (22).

2. The spot welder for processing automotive parts according to claim 1, characterized in that, The bottom moving mechanism includes: A sliding chamber (7), which is arranged at the bottom of the sliding frame (3). A sliding seat (8) is slidably connected in the sliding chamber (7). A lead screw transmission structure is arranged in the sliding chamber (7), and the sliding seat (8) is threadedly connected to the lead screw transmission structure. The rotating shaft (5) is rotatably connected to the sliding seat (8); A moving positioning component, which is arranged between the sliding seat (8) and the sliding frame (3), and the moving positioning component is used to determine the moving position of the sliding seat (8) in the sliding chamber (7).

3. The spot welder for processing automotive parts according to claim 2, characterized in that, The moving positioning component includes: A rotating wheel (9), a through slot is provided in the middle of the sliding seat (8), the rotating wheel (9) is rotatably connected in the through slot, and an encoder (10) is provided between the rotating wheel (9) and the through slot; A friction strip (11) is fixedly connected to the sliding frame (3), the friction strip (11) passes through the through slot, and the friction strip (11) contacts the rotating wheel (9).

4. The spot welder for processing automotive parts according to claim 3, characterized in that, A gear box (12) is provided on the rotating shaft (5) for transmission, a first drive motor (13) is provided on the top of the sliding seat (8), and an output end of the first drive motor (13) is in transmission cooperation with the gear box (12).

5. The spot welder for processing automotive parts according to claim 4, characterized in that, A rectangular tray (14) is fixedly connected to the bottom of the material discharging tray (6), and the rectangular tray (14) is slidably connected to the inner wall of the movable support (4). A transverse moving component is provided between the rectangular tray (14) and the movable support (4).

6. The spot welder for processing automotive parts according to claim 5, characterized in that, The tray positioning assembly includes: a sliding trough (15), wherein the sliding trough (15) is fixedly connected to the movable support (4), the inner wall length of the sliding trough (15) corresponds to the moving distance of the rectangular tray (14) in the movable support (4), and a sliding protrusion (16) is provided at the bottom of the rectangular tray (14), and the sliding protrusion (16) is slidably connected in the sliding trough (15); A distance measuring sensor (17) is provided on one side of the sliding groove body (15), and the distance measuring sensor (17) cooperates with the sliding protrusion (16).

7. The spot welder for processing automotive parts according to claim 6, characterized in that, The movement adjustment component includes: An adjusting chute (29), wherein a plurality of spring dampers (30) are slidably provided on the adjusting chute (29), wherein the spring dampers (30) correspond one to one with the rotating shaft (21), and a rotating member (31) is provided between the spring dampers (30) and the rotating shaft (21); A driving electric cylinder (32) is provided on the material discharging tray (6), and an output end of the driving electric cylinder (32) is fixedly connected to the regulating chute (29).

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