Spot welding machine for automobile part machining

Abstract

The invention relates to the technical field of spot welding machines, and provides an automobile part machining spot welding machine which comprises a mounting rack, a sliding rack and a discharging tray, a plurality of spot welding devices are arranged on one side of the top of the mounting rack, the sliding rack is fixedly connected to the mounting rack, and a movable support is transversely arranged on the top of the sliding rack in a sliding mode; a bottom moving mechanism with a positioning function is arranged at the bottom of the sliding rack, the bottom moving mechanism is used for driving a moving support to transversely move, the moving support transversely moves at the top of the bottom moving mechanism, a rotating shaft is arranged at the bottom of the moving support, and the moving support deviates along the center point of the rotating shaft. By means of the technical scheme, the technical problem that in the welding process of automobile parts in the prior art, due to the fact that welding points between the automobile groove frame and the multiple automobile parts are scattered, the welded parts need to move between spot welding machines repeatedly 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, the spot welding machine plays 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 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 needed. 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 area, 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 with a unified output parameter. 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 automotive trough and multiple automotive 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 a mounting frame, and a plurality of spot welding devices are arranged on one side of the top of the mounting frame. It further includes: A sliding frame which 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, and 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; 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 parts clamping mechanism with adjustable clamping positions is arranged on the feeding tray.

[0006] 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. The 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.

[0007] 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.

[0008] In order to drive the rotating shaft to rotate, further, a gearbox 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 gearbox.

[0009] 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.

[0010] In order to further, the tray positioning assembly includes a sliding groove body and a distance measuring 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. The bottom of the rectangular tray is provided with sliding protrusions, and the sliding protrusions are slidably connected within the sliding groove body. The distance measuring sensor is arranged on one side of the sliding groove body and is matched with the sliding protrusions.

[0011] In order to clamp the vehicle trough frame and vehicle 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. Slide blocks are slidably connected to the distance-adjusting slide rails. The clamping discs are rotatably connected to the slide blocks through rotating shafts. The feeding tray is provided with a moving adjustment assembly for moving the multiple rotating shafts laterally. The opposing clamping seats are slidably connected to each of the distance-adjusting slide rails. Mounting slide blocks are fixedly connected to the distance-adjusting slide rails, and the mounting slide blocks penetrate through and are slidably arranged on the feeding tray. A distance-adjusting screw is threadedly connected between the opposing clamping seat and the mounting slide block.

[0012] In order to enable the clamping disc to clamp vehicle parts, further, rectangular support grooves, W-shaped support grooves, and arc-shaped support grooves are sequentially formed in a circumferential manner on the clamping disc for corresponding to the outer shapes of vehicle parts with different shapes. Among them, a plurality of arc-shaped slopes are arranged on the circumference of the clamping disc.

[0013] 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 arranged on the feeding tray, and the output end of the driving electric cylinder is fixedly connected to the adjustment chute.

[0014] In order to cooperate with the clamping disc to clamp vehicle parts, further, a flat surface, an arc surface, and a right-angle end surface are sequentially arranged on one side of the opposing clamping seat close to the clamping disc from bottom to top. An elastic pad is also arranged on the opposing clamping seat.

[0015] The beneficial effects of the embodiments of the present invention are as follows: In the present invention, when spot welding an automotive trough rack and multiple automotive parts simultaneously, first place the automotive trough rack and multiple automotive parts in a feeding tray, then adjust the positions of multiple clamping discs and multiple opposing clamping seats so that the automotive trough rack is fixedly clamped between the multiple clamping discs and 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 automotive parts to offset, there is a certain deviation between the welding points of the automotive trough rack and 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, and perform precise position adjustment on the automotive trough rack and automotive parts. Monitor the moving position of the feeding tray through the tray positioning assembly to ensure that the automotive trough rack and 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 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 multiple automotive parts, and realizing the welding operation on the corresponding welding points between the automotive trough rack and automotive parts during the lateral movement of the automotive trough rack and automotive parts, improving the welding convenience of the automotive trough rack and automotive parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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 described below 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 according to the content of the exemplary embodiments of the present invention and these drawings.

[0017] Figure 1 is a schematic structural diagram of the whole of the present invention; Figure 2 is a schematic structural diagram of the cooperation between the mounting rack and the spot welding device in the present invention; Figure 3 is a schematic structural diagram of a partial cross-section of the present invention; Figure 4 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; Figure 5 is a schematic structural diagram of the cooperation between the sliding seat, the rotating wheel, the rotating shaft, the moving support and the rectangular tray in the present invention; Figure 6Schematic structural view of the cooperation of the movable support, rectangular tray, sliding groove body, sliding protrusion and distance measuring sensor in the present invention; Figure 7 Schematic structural view of the cooperation of the material placing tray, distance adjusting slide rail, clamping disc and opposite clamping seat in the present invention; Figure 8 Schematic structural view of the cooperation of the spring damper, rotating member and rotating shaft in the present invention; Figure 9 Schematic structural view of the cooperation of the clamping disc, rectangular support groove, W-shaped support groove, arc-shaped support groove and arc-shaped slope in the present invention; Figure 10 Schematic structural view of the cooperation of the opposite clamping seat, flat surface, arc surface, right-angle end surface and elastic pad in the present invention.

[0018] In the figure: 1, mounting frame; 2, spot welding equipment; 3, sliding frame; 4, movable support; 5, rotating shaft; 6, material placing 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 adjusting slide rail; 19, clamping disc; 20, sliding block; 21, rotating shaft; 22, opposite clamping seat; 23, mounting slider; 24, distance adjusting screw; 25, rectangular support groove; 26, W-shaped support groove; 27, arc-shaped support groove; 28, arc-shaped slope; 29, adjusting chute; 30, spring damper; 31, rotating member; 32, driving electric cylinder; 33, flat surface; 34, arc 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 The present invention will be further described in detail below with reference to the 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.

[0019] For the sake of simplicity of the drawings, only the parts related to the disclosure are schematically shown in each figure, and they do not represent their actual structures as products. In addition, for the sake of simplicity and easy understanding of the drawings, in some figures, parts with the same structure or function are only schematically shown for one of them, or only one of them is marked. In this article, "one" not only means "only this one", but also means "more than one" situation, and "several" includes "two" and "more than two".

[0020] In this text, it should be noted that unless otherwise clearly specified and defined, the terms "install", "connect", and "join" 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.

[0021] In the present invention, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over", and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath", and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0022] 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 element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0023] In addition, 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.

[0024] As Figures 1 to 10 shown, the present invention discloses a spot welder for processing automotive parts, which includes an installation frame 1. A plurality of spot welding devices 2 are arranged on one side of the top of the installation frame 1. The spot welding devices 2 are common spot welding devices 2 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 a plurality of welding points in their respective welding areas. It further includes 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. 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 in the sliding chamber 7. A lead screw transmission structure is arranged in 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, which is rotatably connected in the sliding chamber 7 and 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 feeding tray 6 to move horizontally, the motor driving device 38 is started 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. The 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 in the sliding chamber 7. When the sliding seat 8 drives the moving support 4 to move, multiple welding points on the vehicle trough frame and vehicle parts pass through the output end area of the spot welding device 2 in sequence. When spot welding operations are performed on the welding points at different positions on the vehicle trough frame and vehicle 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 vehicle trough frame and vehicle parts; The moving positioning component includes a rotating wheel 9 and a friction strip 11. A through groove is formed in the middle of the sliding seat 8. The rotating wheel 9 is rotatably connected in the through groove. An encoder 10 is arranged between the rotating wheel 9 and the through groove. A friction strip 11 is fixedly connected to the sliding frame 3. The friction strip 11 penetrates through the through groove and contacts the rotating wheel 9. When the sliding seat 8 moves horizontally, in order to ensure the correspondence between the welding points on the vehicle trough frame 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 will rotate during the movement. During the rotation of the rotating wheel 9, the number of rotation turns 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 matching the system in the prior art and is a well-known prior art device in the art. It adopts the sensor principle to give prompts to the user. A supporting protrusion is arranged on the inner top wall of the top of the sliding frame 3. The bottom end of the moving support 4 contacts the inner bottom wall of the supporting protrusion.

[0025] Among them, the movable support 4 moves horizontally on the top of the bottom moving mechanism. A rotating shaft 5 is provided at the bottom of the movable support 4. The movable support 4 offsets along the center point of the rotating shaft 5. A gearbox 12 is drivingly provided on the rotating shaft 5. A first driving motor 13 is provided on the top of the sliding seat 8. The output end of the first driving motor 13 is in driving cooperation with the gearbox 12. In order to drive the rotating shaft 5 to rotate, by starting the first driving motor 13, under the action of the gearbox 12, the rotating shaft 5 is driven to rotate on the sliding seat 8. The gearbox 12 is a common device in the prior art that cooperates with driving devices such as motors and is a well-known prior art device in the art. By using the gearbox 12, the first driving motor 13 can drive the rotating shaft 5 to perform precise small-range movement, which is convenient for precisely controlling the rotation angle of the rotating shaft 5.

[0026] A rectangular tray 14 is fixedly connected to the bottom of the material discharging tray 6. The rectangular tray 14 is slidably connected to the inner wall of the movable support 4. A lateral movement assembly is provided between the rectangular tray 14 and the movable support 4. The lateral movement assembly includes a second driving motor 41. The second driving motor 41 is provided on the movable support 4. A driving tooth plate 39 is provided at the bottom of the rectangular tray 14. A driving gear 40 is meshed with the driving tooth plate 39. The driving gear 40 is provided at the output end of the second driving motor 41. When it is necessary to drive the rectangular tray 14 and the material discharging tray 6 to move horizontally, the second driving motor 41 is started. Through the meshing effect of the driving gear 40 and the driving tooth plate 39, the rectangular tray 14 and the material discharging tray 6 are driven to move horizontally.

[0027] The material discharging tray 6 is slidably arranged on the movable support 4. A tray positioning assembly for monitoring the moving distance of the material discharging tray 6 is provided on the movable support 4. The tray positioning assembly includes a sliding groove body 15 and a distance measuring sensor 17. The sliding groove body 15 is fixedly connected to the movable support 4. The inner wall length of the sliding groove body 15 corresponds to the moving distance of the rectangular tray 14 in the movable support 4. A sliding protrusion 16 is provided at the bottom of the rectangular tray 14. The sliding protrusion 16 is slidably connected in the sliding groove body 15. A distance measuring sensor 17 is provided on one side of the sliding groove body 15. The distance measuring 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 point of the vehicle trough frame and vehicle parts corresponds to the output end of the spot welding device 2, during the movement of the rectangular tray 14 on the movable support 4, the sliding protrusion 16 on the rectangular tray 14 will slide in the sliding groove body 15. The position of the sliding protrusion 16 in the sliding groove body 15 is calculated by the distance measuring sensor 17, so as to judge the position of the rectangular tray 14 in the movable support 4, which is convenient for the user to detect the moving position of the rectangular tray 14.

[0028] The parts clamping mechanism with adjustable clamping positions is arranged on the feeding tray 6. The parts clamping mechanism includes a distance-adjusting slide rail 18, a clamping disc 19 and an opposing clamping seat 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 rail 18. The clamping disc 19 is rotatably connected to the sliding block 20 through a rotating shaft 21. A moving adjustment assembly for laterally moving multiple rotating shafts 21 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 rod 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 rail 18 can be moved on the feeding tray 6 to move the positions of multiple distance-adjusting slide rails 18. Then, the distance-adjusting screw rod 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 assembly, and the vehicle trough rack and multiple vehicle parts are clamped between multiple clamping discs 19 and multiple opposing clamping seats 22; Rectangular support grooves 25, W-shaped support grooves 26 and arc-shaped support grooves 27 are sequentially formed in a circumferential manner on the clamping disc 19 for corresponding to the outer shapes of vehicle parts with different shapes. Among them, multiple arc-shaped slopes 28 are arranged in a circumferential manner on the clamping disc 19. Since the position of the vehicle trough rack is irregular and the shapes of each area 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 made to contact 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 area of the vehicle trough rack, the arc-shaped slope 28 can be made to contact the vehicle trough rack to ensure good clamping performance for the vehicle trough rack; The moving adjustment assembly includes an adjustment chute 29 and a driving electric cylinder 32. Multiple spring dampers 30 are slidably arranged on the adjustment 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. A driving electric cylinder 32 is arranged on the feeding tray 6. The output end of the driving electric cylinder 32 is fixedly connected to the adjustment chute 29. When it is necessary to move the positions of multiple clamping discs 19, the driving electric cylinder 32 is started to drive the adjustment chute 29 to move laterally, pushing the clamping disc 19 to move towards the direction of the opposing clamping seat 22. And in the actual use process, since the outer shape of the vehicle trough rack is not fixed, the contact areas between the clamping disc 19 and the vehicle trough rack are also inconsistent. And because the spring damper 30 has elasticity and maintains sufficient elastic performance after stretching, the clamping effect between the clamping disc 19 and the vehicle trough rack and vehicle parts is improved.

[0029] On one side of the opposing 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 opposing clamping seat 22. Also, because the shape of the vehicle trough rack is not fixed and the height of the vehicle trough rack also varies, for a taller vehicle trough rack, the bottom wall of the vehicle trough rack is in contact with the flat surface 33, while for a shorter vehicle trough rack, the inner bottom wall of the vehicle trough rack is in contact with the right-angle end surface 35. For a vehicle trough rack with an arc surface 34, the vehicle trough rack is in contact with the arc surface 34, and the vehicle trough rack is in contact with the elastic pad 36.

[0030] The working principle of the spot welder for vehicle parts processing: First, after adjusting the positions of the 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. The driving electric cylinder 32 is started to drive the adjusting chute 29 to move horizontally, pushing the clamping disc 19 towards the opposing 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 opposing clamping seats 22, so that the multiple spot welding devices 2 each divide the welding equipment. Then, the motor driving device 38 is started 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 the multiple welding points between the vehicle trough rack and the vehicle parts sequentially move to the bottom of the output end of the spot welding device 2; When spot welding 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 around 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, and adjust the inclination angles of the vehicle trough rack and vehicle parts. Then, the second driving motor 41 is started, and through the meshing effect of the driving gear 40 and the transmission gear plate 39, the rectangular tray 14 and the feeding tray 6 are driven 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; In order to ensure that the welding points of the vehicle trough rack and vehicle parts correspond to 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 rotation encoder 10 monitors the number of rotations of the rotating wheel 9, so as 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, so as to judge the position of the rectangular tray 14 in the moving support 4.

[0031] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. 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 welding machine for automobile parts processing, comprising a mounting frame (1), a top side of the mounting frame (1) being provided with a plurality of spot welding devices (2), characterized in that: Also includes: A sliding frame (3), the sliding frame (3) being fixedly connected to the mounting frame (1), a movable support (4) being arranged at the top of the sliding frame (3) for transverse sliding movement, a bottom movable mechanism having a positioning function being arranged at the bottom of the sliding frame (3), the bottom movable mechanism being used to drive the movable support (4) to move transversely; The movable support (4) moves laterally on the top of the bottom moving mechanism, a rotation axis (5) is provided at the bottom of the movable support (4), and the movable support (4) is offset along the center point of the rotation axis (5); A material discharge tray (6), the material discharge tray (6) being slidably disposed on the movable support (4), the movable support (4) being provided with a tray positioning assembly for monitoring the moving distance of the material discharge tray (6), and the material discharge tray (6) being provided with a component clamping mechanism with an adjustable clamping position.

2. A spot welding machine for automobile parts processing according to claim 1, characterized in that: The bottom moving mechanism comprises: A sliding chamber (7), wherein the sliding chamber (7) is disposed at the bottom of the sliding frame (3), a sliding seat (8) is slidably connected in the sliding chamber (7), a screw transmission structure is disposed in the sliding chamber (7), the sliding seat (8) is threadedly connected to the screw transmission structure, and the rotating shaft (5) is rotatably connected to the sliding seat (8); A movable positioning component is provided between the sliding seat (8) and the sliding frame (3), and the movable positioning component is used to determine the moving position of the sliding seat (8) in the sliding chamber (7).

3. A spot welding machine for automobile parts processing according to claim 2, characterized in that: The mobile positioning component comprises: A rotating wheel (9), a through slot being provided in the middle of the sliding seat (8), the rotating wheel (9) being rotatably connected in the through slot, and an encoder (10) being provided between the rotating wheel (9) and the through slot; A friction strip (11), the friction strip (11) being fixedly connected to the sliding frame (3), the friction strip (11) passing through the through slot, and the friction strip (11) being in contact with the rotating wheel (9).

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

6. A spot welding machine for automobile parts processing according to claim 5, characterized in that: The tray positioning assembly comprises: a sliding groove body (15), the sliding groove body (15) being fixedly connected to the movable support (4), the inner wall length of the sliding groove body (15) corresponding to the moving distance of the rectangular tray (14) in the movable support (4), the bottom of the rectangular tray (14) being provided with a sliding protrusion (16), the sliding protrusion (16) being slidably connected in the sliding groove body (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. A spot welding machine for automobile parts processing according to claim 6, characterized in that: The component clamping mechanism comprises: A distance-adjusting slide rail (18), wherein the number of the distance-adjusting slide rails (18) is set to be multiple, and the distance-adjusting slide rail (18) is slidably connected to the material discharge tray (6); A clamping plate (19), a sliding block (20) is slidably connected to the distance adjustment slide rail (18), the clamping plate (19) is rotatably connected to the sliding block (20) via a rotating shaft (21), and a moving adjustment component for moving a plurality of rotating shafts (21) in a lateral direction is provided on the material discharging tray (6); An opposing clamping seat (22), each of the distance-adjusting slide rails (18) is slidably connected to the opposing clamping seat (22), the distance-adjusting slide rail (18) is fixedly connected to a mounting slide block (23), the mounting slide block (23) is slidably disposed on the material discharge tray (6), and a distance-adjusting screw rod (24) is threadedly connected between the opposing clamping seat (22) and the mounting slide block (23).

8. A spot welding machine for automobile parts processing according to claim 7, characterized in that: The upper circumference of the clamping plate (19) is provided with a rectangular support groove (25), a W-shaped support groove (26) and an arc-shaped support groove (27) in sequence, so as to correspond to the appearance of automobile parts of different shapes; Wherein, a plurality of arc-shaped slope surfaces (28) are arranged on the circumference of the clamping disk (19).

9. A spot welding machine for automobile parts processing according to claim 8, characterized in that: The mobile adjustment component comprises: An adjusting slide groove (29), wherein a plurality of spring dampers (30) are slidably arranged on the adjusting slide groove (29), the spring dampers (30) correspond to the rotating shaft (21) one by one, and a rotating member (31) is arranged 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 adjusting slide groove (29).

10. A spot welding machine for automobile parts processing according to claim 9, characterized in that: A plane (33), an arcuate surface (34) and a right-angle end surface (35) are sequentially arranged from bottom to top on a side of the opposing clamping seat (22) close to the clamping plate (19), and an elastic pad (36) is also arranged on the opposing clamping seat (22).

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