Automatic spot welding device for inner and outer plates of B column of automobile

Abstract

The utility model relates to the field of automobile parts processing discloses an automatic spot welding device of automobile B column inner and outer plate. It includes spot welding machine, rotating mechanism and clamping tool, spot welding machine includes machine body and with the spot welding head subassembly of machine body connection, spot welding head subassembly is on the machine body interval arrangement multiple groups, to the multiple position synchronous spot welding of product, rotating mechanism is located one side of spot welding machine, clamping tool is placed for product positioning, clamping tool is connected with rotating mechanism, and rotating mechanism is suitable for drive clamping tool and drive product rotation to multiple spot welding head subassembly, clamping tool is at least arranged two on rotating mechanism periphery, when one clamping tool drives product spot welding, can place the product needing spot welding on another clamping tool. The utility model can spot welding to multiple position simultaneously, can place another product on corresponding clamping tool and wait for spot welding while spot welding, improves processing efficiency, guarantees the spot welding precision of every product, and reduces the labor intensity.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts processing technology, and more specifically, to an automatic spot welding device for the inner and outer panels of an automotive B-pillar. Background Technology

[0002] The inner and outer panels of the car's B-pillar are mainly fixed together by spot welding. The spot welding machine adopts the principle of double-sided, double-point overcurrent welding, that is, it has two spot welding heads, one above the other. During operation, the electrodes of the two spot welding heads press on the workpiece, causing the two layers of metal to form a certain contact resistance under the pressure of the two electrodes. When the welding current flows from one electrode to the other electrode, an instantaneous heat fusion is formed at the two contact resistance points. The existing spot welding machine is a single-head spot welding machine. However, there are multiple spot welding positions for the inner and outer panels of the car's B-pillar. During spot welding, the operator needs to first take out the stacked and edge-wrapped inner and outer panels of the B-pillar from the transfer box, then place them on the spot welding platform, and then step on the foot pedal to drive the spot welding machine to spot weld one position. Then, the position of the inner and outer panels of the B-pillar is moved left and right to spot weld the remaining positions in sequence. After all the spot welding positions are completed, the operator manually places the product into another finished product transfer box next to it, and so on.

[0003] However, in the above spot welding process, a single product needs to be spot welded multiple times by the spot welding machine. During the spot welding process, the product also needs to be moved manually to adjust the spot welding position, resulting in low work efficiency and increased labor intensity for the workers. In addition, manually moving the product to adjust the spot welding position can lead to large deviations in the spot welding position and low spot welding accuracy. Utility Model Content

[0004] To address at least one of the aforementioned problems, this utility model provides an automatic spot welding device for the inner and outer panels of an automotive B-pillar, comprising a spot welding machine, a rotating mechanism, and a clamping fixture. The spot welding machine includes a machine body and spot welding head assemblies connected to the machine body. Multiple sets of spot welding head assemblies are spaced apart on the machine body to simultaneously spot weld multiple positions of the product. The rotating mechanism is located on one side of the spot welding machine. The clamping fixture is used for positioning and placing the product. The clamping fixture is connected to the rotating mechanism, and the rotating mechanism is adapted to drive the clamping fixture to rotate the product to multiple sets of spot welding head assemblies. At least two clamping fixtures are circumferentially spaced apart on the rotating mechanism. When any one of the clamping fixtures is spot welding the product, the product to be spot welded can be placed on another clamping fixture.

[0005] Optionally, the clamping fixture is provided with a positioning groove for positioning and placing the product.

[0006] Optionally, the product is provided with a positioning hole, and the clamping fixture is provided with a positioning rod, which is inserted into the positioning hole.

[0007] Optionally, the clamping fixture is equipped with a clamping cylinder, and a pressing block and a stop block are fixedly installed on the telescopic rod of the clamping cylinder. The pressing block and the stop block are arranged in a vertical direction. The pressing block cooperates with the clamping fixture to limit the vertical movement of the product. The stop block cooperates with the clamping fixture to limit the movement of the product along the moving direction of the stop block.

[0008] Optionally, the rotating mechanism includes a base, a rotating drive component, and a turntable. The rotating drive component is connected to the base and the turntable to drive the turntable to rotate. Multiple clamping fixtures are fixedly installed on the turntable.

[0009] Optionally, the automatic spot welding device for the inner and outer B-pillar panels of automobiles also includes a feeding mechanism located below the clamping fixture. The feeding mechanism is connected to the rotating mechanism and includes a lifting component and a flipping drive component. The lifting component is adapted to lift the spot-welded product onto the clamping fixture. The flipping drive component is connected to the lifting component. When the lifting component lifts the product to a set height, the flipping drive component is adapted to drive the lifting component to flip the product, causing the product to fall automatically.

[0010] Optionally, the lifting assembly includes a connecting plate, a lifting cylinder, a lifting plate, a lifting frame, and a crossbar. The connecting plate is fixedly connected to the rotating mechanism, the lifting cylinder is connected to the connecting plate, and the telescopic rod of the lifting cylinder is connected to the lifting plate to drive the lifting plate to rise and fall. The lifting frame is movably connected to the lifting plate and rises and falls synchronously. The crossbar is fixedly installed on the top of the lifting frame to be suitable for lifting the product.

[0011] Optionally, one end of the crossbar extends away from the rotating mechanism and is suspended, and two crossbars are spaced apart on the lifting frame.

[0012] Optionally, a blocking rod is fixedly provided at one end of the crossbar near the rotating mechanism. The blocking rod extends vertically upward and is located on the side of the product near the rotating mechanism.

[0013] Optionally, the lifting frame is hinged to the lifting plate, and the tilting drive assembly includes a lifting rod, a hinge seat, and a limiting ring. The top of the connecting plate has an oblong hole that penetrates the connecting plate, and the lifting rod is inserted into the oblong hole. The hinge seat is located above the connecting plate and is fixedly connected to the lifting rod, and the lifting frame is hinged to the hinge seat. The limiting ring is located below the connecting plate and is connected to the lifting rod, and the limiting ring is spaced apart from the connecting plate. During the lifting process, when the limiting ring abuts against the connecting plate, it will drive the lifting frame to tilt the crossbar relative to the lifting plate.

[0014] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0015] 1. Multiple sets of spot welding head assemblies can spot weld multiple positions on a product simultaneously, improving the efficiency of spot welding. In addition, multiple clamping fixtures are driven to rotate by a rotating mechanism. When the spot welding machine is spot welding a product on one of the clamping fixtures, the product to be spot welded can be placed on the corresponding clamping fixture at the same time, further improving processing efficiency and reducing the labor intensity of workers.

[0016] 2. The product can be positioned on the clamping fixture by the positioning groove and positioning rod. Then the clamping cylinder will drive the lower pressure block and the abutment block to clamp and position the product. During rotation, the product is not easy to move, thus ensuring the spot welding accuracy of each product and ensuring the spot welding quality.

[0017] 3. The spot-welded products are rotated to the unloading mechanism, which lifts the products from the clamping fixture and flips them over, causing them to fall automatically due to the tilt, thus completing the unloading process. This eliminates the need for manual unloading, further reducing labor intensity. In addition, while one product is being spot-welded, the unloading mechanism can automatically unload the spot-welded products at the same time and place the products to be spot-welded onto the corresponding clamping fixtures simultaneously, eliminating the need for additional unloading time and further improving processing efficiency. Attached Figure Description

[0018] Figure 1 This is a structural diagram of the automatic spot welding device in an embodiment of the present invention;

[0019] Figure 2 This is a structural diagram of the rotating mechanism, clamping fixture, and unloading mechanism in an embodiment of this utility model;

[0020] Figure 3 This is a structural diagram of the clamping tool in an embodiment of the present utility model;

[0021] Figure 4 The structure of the feeding mechanism in this utility model embodiment Figure 1 ;

[0022] Figure 5 The structure of the feeding mechanism in this utility model embodiment Figure 2 .

[0023] Explanation of reference numerals in the attached drawings: 1. Spot welding machine; 11. Machine body; 12. Spot welding head assembly; 2. Rotating mechanism; 21. Base; 22. Rotating drive component; 23. Turntable; 24. Rotating pneumatic diverter valve; 3. Clamping fixture; 31. Positioning groove; 32. Positioning rod; 33. Clamping cylinder; 34. Lowering block; 35. Pressing block; 36. Support frame; 4. Unloading mechanism; 41. Lifting assembly; 411. Connecting plate; 412. Lifting cylinder; 413. Lifting plate; 415. Lifting frame; 416. Crossbar; 42. Tilting drive assembly; 43. Lifting rod; 44. Hinge seat; 45. Limiting ring; 46. Hinge rod. Detailed Implementation

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the following description is provided in conjunction with the appendix. Figure 1-5 This application will be described in further detail.

[0025] This utility model embodiment provides an automatic spot welding device for the inner and outer panels of an automobile B-pillar, referencing... Figure 1 and Figure 2 The automatic spot welding device for the inner and outer B-pillar panels of automobiles includes a spot welding machine 1, a rotating mechanism 2, a clamping fixture 3, and a unloading mechanism 4. The spot welding machine 1 includes a machine body 11 and spot welding head assemblies 12 connected to the machine body 11. Multiple sets of spot welding head assemblies 12 are spaced apart on the machine body 11 to simultaneously spot weld multiple positions on the product. The rotating mechanism 2 is located on one side of the spot welding machine 1. The clamping fixture 3 is used for product positioning and is connected to the rotating mechanism 2. The rotating mechanism 2 is adapted to drive the clamping fixture 3 to rotate the product to the multiple sets of spot welding head assemblies 12. The unloading mechanism 4 is connected to the rotating mechanism 2 and is located below the clamping fixture 3 to lift the spot-welded product for unloading. Three clamping fixtures 3 are evenly spaced around the rotating mechanism 2. When any one clamping fixture 3 drives the product to be spot welded, another clamping fixture 3 drives the spot-welded product to be located directly above the unloading mechanism 4 to achieve automatic unloading. The last clamping fixture 3 has no product on it, so that the product to be spot welded can be placed on it. This realizes the synchronous operation of loading, spot welding and unloading, and improves processing efficiency.

[0026] Multiple spot welding head assemblies 12 have the same structure; the following description uses one assembly as an example. The spot welding head assembly 12 includes an upper spot welding head, a first lifting cylinder, a lower spot welding head, and a second lifting cylinder. The cylinder body of the first lifting cylinder is bolted to the side wall of the machine body 11, with its extension rod pointing downwards. The upper spot welding head is bolted to the extension rod of the first lifting cylinder. The second lifting cylinder is located on the same side as the first lifting cylinder, below it and spaced apart. The cylinder body of the second lifting cylinder is bolted to the machine body 11, with its extension rod pointing upwards. The lower spot welding head is bolted to the extension rod of the second lifting cylinder and spaced apart from the upper spot welding head. During spot welding, the product is positioned between the upper and lower spot welding heads. The first lifting cylinder drives the upper spot welding head to descend and contact the product; the second lifting cylinder drives the lower spot welding head to rise and contact the product, thus achieving spot welding.

[0027] Reference Figure 1 and Figure 2 The rotating mechanism 2 is located on one side of the machine body 11 where the spot welding head assembly 12 is set. The rotating mechanism 2 includes a base 21, a rotating drive component 22, and a turntable 23. The rotating drive component 22 is a motor, which is fixedly connected to the base 21 by bolts, with the motor shaft facing upwards. Three clamping fixtures 3 are all fixedly installed on the top of the turntable 23 by bolts; the turntable 23 is connected to the motor shaft, and the motor drives the turntable 23 to rotate the three clamping fixtures 3.

[0028] Reference Figure 2 and Figure 3 The three clamping fixtures 3 have the same structure; the following description uses one clamping fixture 3 as an example. The top of the clamping fixture 3 has multiple positioning slots 31 spaced apart, allowing the product to be positioned and installed within them. The product has positioning holes, and a positioning rod 32 is fixedly installed on the top of the clamping fixture 3. The positioning rod 32 can be inserted into the positioning holes, preventing the product from shifting and improving the stability of the product placed on the clamping fixture 3.

[0029] Reference Figure 2 and Figure 3Two clamping cylinders 33 are spaced apart on the same side of the clamping fixture 3. The two clamping cylinders 33 have the same mating structure with the clamping fixture 3. The following description uses the structure of one clamping cylinder 33 as an example. The clamping cylinder 33 is located on the side of the product away from the axis of the turntable 23. The cylinder body of the clamping cylinder 33 is fixed to the clamping fixture 3 by bolts. The telescopic rod of the clamping cylinder 33 faces the product. A lower pressure block 34 and abutment block 35 are fixedly installed on the telescopic rod of the clamping cylinder 33 by bolts. The lower pressure block 34 and the abutment block are arranged vertically, and the lower pressure block 34 is located above the abutment block. When the clamping cylinder 33 drives the lower pressure block 34 and the abutment block 35 closer to the product, the lower pressure block 34 will be positioned above the corresponding position on the product and will contact the top of the corresponding position on the product. The lower pressure block 34 will then cooperate with the clamping fixture 3 to limit the vertical movement of the product. The abutment block 35 will abut against the side of the product closest to the clamping cylinder 33, and will cooperate with the clamping fixture 3 to limit the movement of the product along the direction of movement of the abutment block 35. This ensures that the product will not move when rotating synchronously with the turntable 23, thereby guaranteeing the spot welding accuracy of each product and ensuring the spot welding quality.

[0030] Reference Figure 2 and Figure 3 A support frame 36 is bolted to the base 21. The support frame 36 is located on one side of the turntable 23 and extends bent to the top of the turntable 23. An intake manifold (not shown in the figure) is mounted on the support frame 36, which supports the intake manifold. One end of the intake manifold is connected to the air source. A rotary pneumatic diverter valve 24 (existing technology, specific structure not described in detail) is bolted to the top of the turntable 23. The central axis of the rotary pneumatic diverter valve 24 coincides with the central axis of the turntable 23. The end of the intake manifold away from the air source is rotatably connected to the top of the rotary pneumatic diverter valve 24. The air pipes on multiple clamping cylinders 33 are all connected to and communicate with the rotary pneumatic diverter valve 24. When the turntable 23 rotates, the clamping cylinder 33 and the rotary pneumatic diverter valve 24 rotate synchronously with the turntable 23. Since the intake pipe is rotatably connected to the rotary pneumatic diverter valve 24, the rotary pneumatic diverter valve 24 will rotate relative to the intake pipe, making it less likely for the air pipe on the clamping cylinder 33 to become tangled, and the intake pipe is less likely to become tangled and affect the intake.

[0031] Reference Figures 2 to 5 The unloading mechanism 4 includes a lifting component 41 and a tilting drive component 42, both located below the turntable 23. The lifting component 41 is adapted to lift the spot-welded product onto the corresponding clamping fixture 3. The tilting drive component 42 is connected to the lifting component 41. After the lifting component 41 lifts the product to a set height, the tilting drive component 42 is adapted to drive the lifting component 41 to tilt the product, causing it to fall automatically.

[0032] The lifting assembly 41 includes a connecting plate 411, a lifting cylinder 412, a lifting plate 413, a lifting frame 415, and a crossbar 416. The connecting plate 411 is fixed to the side wall of the base 21 by bolts, and the cylinder body of the lifting cylinder 412 is fixedly connected to the connecting plate 411 by bolts. The telescopic rod of the lifting cylinder 412 is fixedly connected to the lifting plate 413 to drive the lifting plate 413 to rise or fall. The lifting frame 415 is located on top of the lifting plate 413 and is hinged to the lifting plate 413. On the one hand, the lifting frame 415 can rise and fall synchronously with the lifting plate 413; on the other hand, the lifting frame 415 can be flipped relative to the lifting plate 413 under the action of the flipping drive assembly 42. The crossbar 416 is welded and fixed to the top of the lifting frame 415 to facilitate lifting the spot-welded product from the clamping fixture 3.

[0033] Reference Figures 2 to 5 The upper rotating seat is bolted to the top of the lifting plate 413, and the lower rotating seat is bolted to the bottom of the lifting frame 415. The upper and lower rotating seats are hinged together by a pin and a snap ring. A damping sleeve is fitted onto the pin and inserted into the upper and lower rotating seats, providing damping force when the lifting frame 415 rotates relative to the lifting plate 413. This reduces the flexibility of the lifting frame 415's rotation and tilting, facilitating product unloading. The tilting drive assembly 42 drives the lifting frame 415 to tilt away from the base 21.

[0034] Two crossbars 416 are spaced apart on the lifting frame 415 to stably lift the product. The two crossbars 416 have the same structure; the following description uses one crossbar 416 as an example. One end of the crossbar 416 extends away from the base 21 and is cantilevered. A stop bar is welded to the end of the crossbar 416 closest to the base 21. The stop bar extends vertically upwards and is located on the side of the product closest to the rotating mechanism 2. After the product is lifted by the crossbar 416, the stop bar limits its movement, preventing it from falling off the crossbar 416 towards the base 21.

[0035] Reference Figures 2 to 5The tilting drive assembly 42 includes a lifting rod 43, a hinge seat 44, and a limiting retaining ring 45. A waist-shaped hole is formed at the top of the connecting plate 411 on the side away from the base 21. The waist-shaped hole extends vertically through the connecting plate 411, and its length direction is the same as that of the crossbar 416. The lifting rod 43 is a threaded rod, inserted into the waist-shaped hole, with its two ends located above and below the connecting plate 411, respectively. The hinge seat 44 is located above the connecting plate 411 and is threadedly fixedly connected to the lifting rod 43. A hinge rod 46 is bolted to the bottom of the lifting frame 415. The hinge rod 46 is "7"-shaped, with one end extending away from the base 21 and protruding from the lifting frame 415, and the end of the hinge rod 46 away from the base 21 is hinged to the hinge seat 44 via a pin. The limiting ring 45 is located below the connecting plate 411 and is arranged at intervals with the connecting plate 411. The limiting ring 45 is sleeved on the lifting rod 43 and threadedly connected to the lifting rod 43. The outer diameter of the limiting ring 45 is larger than the width of the waist-shaped hole.

[0036] Reference Figures 2 to 5 During unloading, the clamping cylinder 33 retracts to release the product, and the lifting cylinder 412 drives the lifting plate 413 to raise the lifting frame 415 and the crossbar 416. When the crossbar 416 completely lifts the product from the corresponding clamping fixture 3 and raises it to a certain height, the limiting ring 45 will press against the bottom of the connecting plate 411. At this time, the lifting cylinder 412 continues to drive the lifting plate 413 to raise the lifting frame 415 and the crossbar 416, which will cause the lifting frame 415 to rotate relative to the lifting plate 413 away from the base 21, so that the product automatically slides off the crossbar 416. After the product slides off the crossbar 416, it will fall into the transfer box or conveyor and be transferred to the next processing station for processing.

[0037] After the product slides off the crossbar 416, the lifting cylinder 412 drives the lifting plate 413 to lower the lifting frame 415 and the crossbar 416. Since the hinge rod 46 is "7" shaped, it will first abut against the top of the connecting plate 411. As the lifting plate 413 continues to descend, it will drive the lifting frame 415 to flip and reset. A guide rod is connected to the lifting plate 413, which passes through the connecting plate and slides in connection with it.

[0038] The implementation principle of the automatic spot welding device for the inner and outer panels of the B-pillar of an automobile according to an embodiment of this application is as follows: when any clamping fixture 3 is spot welding the product, another clamping fixture 3 is positioned above the unloading mechanism 4 with the spot-welded product, thereby achieving automatic unloading; the last clamping fixture 3 has no product on it, which is used to place the product to be spot welded, thus realizing the synchronous operation of loading, spot welding, and unloading. When spot welding the product, multiple sets of spot welding head assemblies 12 can spot weld multiple positions on the product simultaneously, improving processing efficiency and reducing the labor intensity of workers.

[0039] Similarly, the components included in the "components," "mechanisms," and "devices" of this disclosure can also be flexibly combined. They can be modularly produced according to actual needs and assembled as an independent module; or they can be assembled separately to form a module in this device. The division of the above-mentioned components in this disclosure is only one embodiment for ease of reading and is not intended to limit the scope of protection of this disclosure. Any technical solution that includes the above-mentioned components and has the same function should be understood as an equivalent technical solution of this disclosure.

[0040] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0041] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0042] In this disclosure, unless otherwise expressly 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 expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0043] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact 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.

[0044] It should be noted that when a component is referred to as "fixed to," "set on," "fixed to," or "mounted on" another component, it can be directly on the other component or there may be an intervening component. When a component is considered to be "connected to another component," it can be directly connected to the other component or there may be an intervening component. Furthermore, when a component is considered to be "fixedly connected" to another component, the connection can be detachable or non-detachable, such as through socketing, snap-fitting, integral molding, welding, etc., which are achievable in conventional technologies and will not be elaborated upon here.

[0045] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The above embodiments are merely illustrative of several implementation methods of this disclosure, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of this disclosure, and these modifications and improvements all fall within the protection scope of this disclosure.

Claims

1. An automatic spot welding device for the inner and outer panels of an automobile B-pillar, characterized in that: The assembly includes a spot welding machine (1), a rotating mechanism (2), and a clamping fixture (3). The spot welding machine (1) includes a machine body (11) and spot welding head assemblies (12) connected to the machine body (11). Multiple sets of spot welding head assemblies (12) are spaced apart on the machine body (11) to simultaneously spot weld multiple positions of the product. The rotating mechanism (2) is located on one side of the spot welding machine (1). The clamping fixture (3) is used for product positioning and placement. The clamping fixture (3) is connected to the rotating mechanism (2). The rotating mechanism (2) is adapted to drive the clamping fixture (3) to rotate the product to multiple sets of spot welding head assemblies (12). At least two clamping fixtures (3) are spaced apart circumferentially on the rotating mechanism (2). When any clamping fixture (3) drives the product to be spot welded, the product to be spot welded can be placed on another clamping fixture (3).

2. The automatic spot welding device for automobile B-pillar inner and outer panels according to claim 1, characterized in that: The clamping fixture (3) is provided with a positioning groove (31) for positioning and placing the product.

3. The automatic spot welding device for automobile B-pillar inner and outer panels according to claim 1, characterized in that: The product is provided with a positioning hole, and the clamping fixture (3) is provided with a positioning rod (32), which is inserted into the positioning hole.

4. The automatic spot welding device for the inner and outer panels of the automotive B-pillar according to claim 1, characterized in that: The clamping fixture (3) is equipped with a clamping cylinder (33). A pressing block (34) and a pressing block (35) are fixedly installed on the telescopic rod of the clamping cylinder (33). The pressing block (34) and the pressing block (35) are arranged in the vertical direction. The pressing block (34) cooperates with the clamping fixture (3) to limit the vertical movement of the product. The pressing block (35) cooperates with the clamping fixture (3) to limit the movement of the product along the moving direction of the pressing block (35).

5. The automatic spot welding device for automobile B-pillar inner and outer panels according to claim 1, characterized in that: The rotating mechanism (2) includes a base (21), a rotating drive (22) and a turntable (23). The rotating drive (22) is connected to the base (21) and the rotating drive (22) is connected to the turntable (23) to drive the turntable (23) to rotate. Multiple clamping fixtures (3) are fixedly installed on the turntable (23).

6. The automatic spot welding device for automobile B-pillar inner and outer panels according to any one of claims 1-5, characterized in that: It also includes a feeding mechanism (4) located below the clamping fixture (3). The feeding mechanism (4) is connected to the rotating mechanism (2). The feeding mechanism (4) includes a lifting component (41) and a flipping drive component (42). The lifting component (41) is adapted to lift the spot-welded product onto the clamping fixture (3). The flipping drive component (42) is connected to the lifting component (41). When the lifting component (41) lifts the product to a set height, the flipping drive component (42) is adapted to drive the lifting component (41) to flip the product, so that the product falls automatically.

7. The automatic spot welding device for automobile B-pillar inner and outer panels according to claim 6, characterized in that: The lifting assembly (41) includes a connecting plate (411), a lifting cylinder (412), a lifting plate (413), a lifting frame (415), and a crossbar (416). The connecting plate (411) is fixedly connected to the rotating mechanism (2). The lifting cylinder (412) is connected to the connecting plate (411). The telescopic rod of the lifting cylinder (412) is connected to the lifting plate (413) to drive the lifting plate (413) to rise and fall. The lifting frame (415) is movably connected to the lifting plate (413) and rises and falls synchronously. The crossbar (416) is fixedly installed on the top of the lifting frame (415) to be suitable for lifting the product.

8. The automatic spot welding device for automobile B-pillar inner and outer panels according to claim 7, characterized in that: One end of the crossbar (416) extends away from the rotating mechanism (2) and is suspended. Two crossbars (416) are spaced apart on the lifting frame (415).

9. The automatic spot welding device for automobile B-pillar inner and outer panels according to claim 7, characterized in that: A blocking rod is fixedly provided at one end of the crossbar (416) near the rotating mechanism (2). The blocking rod extends upward in the vertical direction and is located on the side of the product near the rotating mechanism (2).

10. The automatic spot welding device for automobile B-pillar inner and outer panels according to claim 7, characterized in that: The lifting frame (415) is hinged to the lifting plate (413). The flipping drive assembly (42) includes a lifting rod (43), a hinge seat (44), and a limiting ring (45). The top of the connecting plate (411) has an oblong hole that penetrates the connecting plate (411). The lifting rod (43) is inserted into the oblong hole. The hinge seat (44) is located above the connecting plate (411) and is fixedly connected to the lifting rod (43). (415) is hinged to the hinge seat (44); the limiting ring (45) is located below the connecting plate (411) and connected to the lifting rod (43), and the limiting ring (45) and the connecting plate (411) are arranged at intervals; during the lifting process of the lifting frame (415), when the limiting ring (45) abuts against the connecting plate (411), it will drive the lifting frame (415) to drive the crossbar (416) to flip relative to the lifting plate (413).

Images