Intelligent sliding frame for door welding

Abstract

The present application relates to the field of sled, specifically to a kind of intelligent sled frame for door welding, including base, still including sliding frame, lifting mechanism, rotating mechanism and positioning mechanism, lifting mechanism includes lifting frame and rotating component, support plate is fixed on the outer wall of lifting frame, rotating mechanism includes rotary table, rotating shaft and drive component, positioning mechanism includes four positioning rods, four longitudinal adjusting components and four transverse adjusting components, four longitudinal adjusting components are symmetrically arranged in the bottom of rotary table, each transverse adjustment is set in the top of one longitudinal adjusting component, each positioning rod is set on one transverse adjusting component, a kind of intelligent sled frame for door welding of the present application can adapt to the plug-in requirement of the welding positioning hole of different types and different sizes of door, to further improve the practicality and intelligent degree of the present sled frame, satisfy different welding needs.

Description

Technical Field

[0001] This invention relates to the field of skids, and more specifically to an intelligent skid frame for welding car doors. Background Technology

[0002] The door welding skid frame is mainly used in the field of automotive door welding. As a load-bearing fixture in this field, it plays a crucial role in door welding.

[0003] The existing door welding skids have the following shortcomings:

[0004] 1. The spacing of welding positioning holes on the outer wall of the door varies for different types and sizes of vehicles. The positioning rods on the existing skids are often not adjustable because they cannot meet the positioning requirements of different types and sizes of vehicles, making welding inconvenient.

[0005] 2. Currently, most of the sliding skid frames used for car door welding are relatively low in height. When loading materials onto the skid frame, workers need to bend over and place the car door onto the positioning rod of the frame. Based on the current daily processing volume of the factory, workers need to bend over to load car doors hundreds of times a day. In addition, the car doors are quite heavy, which is extremely harmful to the workers' health. Summary of the Invention

[0006] The purpose of this invention is to provide an intelligent sliding skid frame for welding car doors.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] A smart sliding pry frame for welding car doors is provided, including a base;

[0009] It also includes a sliding frame, a lifting mechanism, a rotating mechanism, and a positioning mechanism;

[0010] The sliding frame is slidably positioned on top of the base;

[0011] The lifting mechanism is mounted on the sliding frame. The lifting mechanism includes the lifting frame and the rotating component. Four guide rods are symmetrically arranged on the top of the sliding frame. A first slider is slidably mounted on the outer wall of each guide rod. The lifting frame is fixed between the four first sliders. The rotating component is inserted into the sliding frame.

[0012] A support plate is fixedly installed on the outer wall of the lifting frame. A rotating mechanism is installed on the support plate. The rotating mechanism includes a turntable, a rotating shaft, and a drive assembly. The rotating shaft is rotatably installed on the top of the support plate. A limiting platform is fixedly installed on the top of the lifting frame. The turntable is fixedly installed on the top of the rotating shaft. The rotating shaft and the limiting platform are rotatably connected. The drive assembly is installed between the support plate and the rotating shaft.

[0013] The positioning mechanism is located on the outer wall of the turntable. The positioning mechanism includes four positioning rods, four longitudinal adjustment components and four lateral adjustment components. The four longitudinal adjustment components are symmetrically arranged at the bottom of the turntable, each lateral adjustment component is located on top of a longitudinal adjustment component, and each positioning rod is located on a lateral adjustment component.

[0014] Furthermore, each longitudinal adjustment component includes an electric push rod, a push block, a slide plate, and two slide bars. Eight slide grooves are symmetrically opened on the outer wall of the turntable. The two slide bars are slidably disposed inside two of the slide grooves. The slide plate and the push block are fixedly disposed on the top and bottom of the two slide bars, respectively. The electric push rod is fixedly disposed on the bottom of the turntable, and its output end is fixedly connected to one end of the outer wall of the push block.

[0015] Furthermore, each lateral adjustment component includes a slide column, a slide rail, a micro motor, a turntable, a connecting rod, a guide block, and a sleeve. The slide rail is fixedly mounted on the top of the slide plate, the slide column is slidably mounted on the top of the slide rail, the micro motor is fixedly mounted on the top of the slide plate, the turntable is fixedly mounted on its output end, the guide block is fixedly mounted on the bottom of the slide column, and the connecting rod is hinged between the guide block and the turntable. A guide groove for the guide block to slide horizontally is provided on the outer wall of one end of the slide rail, and the sleeve is fixedly mounted on the top of the slide column. The center of the sleeve is provided with an clearance hole for the positioning rod to rise and fall.

[0016] Furthermore, a sliding plate is fixedly provided on the outer wall of the positioning rod, a handle is fixedly provided on the outer wall of the sliding plate, a sliding rod is slidably provided on the outer wall of the sliding plate, a pull block and a wedge-shaped buckle are fixedly provided at both ends of the sliding rod, the pull block is slidably connected to the sliding plate through the guide rod, a retaining spring is sleeved on the outer wall of the sliding rod, the wedge-shaped buckle and the sliding plate respectively abut against the two ends of the retaining spring, a locking plate is fixedly provided at the top of each sliding column, and a number of wedge-shaped slots for the wedge-shaped buckle to engage are equally spaced on the outer wall of the locking plate, and the wedge-shaped buckle engages with one of the wedge-shaped slots.

[0017] Furthermore, the rotating assembly includes a stepper motor, a synchronous belt, two lead screws, and three synchronous pulleys. The stepper motor is fixedly mounted on the bottom of the sliding frame, the two lead screws are rotatably mounted on the sliding frame, and the three synchronous pulleys are respectively fixedly mounted on the output end of the stepper motor and the bottom end of the two lead screws. The synchronous belt is sleeved between the three synchronous pulleys.

[0018] Furthermore, lifting blocks are fixed on the outer walls of both ends of the lifting frame, and each lifting block is threadedly connected to a first lead screw. Two L-shaped plates are symmetrically arranged on the top of the sliding frame, and the end of each first lead screw away from the synchronous wheel is rotatably connected to the top of an L-shaped plate.

[0019] Furthermore, the drive assembly includes a DC motor, a worm gear, and a worm wheel. Two limiting plates are symmetrically arranged on the top of the support plate. The worm gear rotates between the two limiting plates. The DC motor is inserted into one of the limiting plates, and its output end is fixedly connected to one end of the worm gear. The worm wheel is fixedly mounted on the rotating shaft and meshes with the worm gear.

[0020] Furthermore, two upright plates are fixedly installed on the top of the base, a servo motor is inserted into the outer wall of one of the upright plates, a second lead screw is rotatably installed between the two upright plates, the output end of the servo motor is fixedly connected to one end of the second lead screw, and a second slider is fixedly installed at the bottom of the sliding frame through four connecting rods, the second slider is threadedly connected to the second lead screw.

[0021] Furthermore, four pulleys are symmetrically arranged at both ends of the sliding frame, and two guide rails are symmetrically arranged at the top of the base. Each pair of pulleys on the same side is slidably connected to one guide rail.

[0022] Furthermore, the sliding frame has a clearance notch at the end near the servo motor.

[0023] The beneficial effects of this invention are:

[0024] 1. This invention designs a positioning mechanism, namely four positioning rods, four longitudinal adjustment components, and four lateral adjustment components. Through the four longitudinal adjustment components and four lateral adjustment components, the position of each positioning rod can be adjusted individually, so that the four positioning rods can adapt to the insertion requirements of welding positioning holes of different types and sizes of car doors, thereby improving the practicality and intelligence of this skid frame and meeting different welding requirements.

[0025] 2. This invention designs a lifting mechanism, namely a lifting frame and a rotating component. The rotating component can drive the lifting frame to slide vertically, thereby raising the lifting frame and its four positioning rods at the top to a suitable height. This allows workers to directly place the car door between the four positioning rods without having to bend over frequently to load the car door, greatly reducing the labor intensity of workers and helping to protect their health.

[0026] 3. This invention, through the design of a sliding plate, handle, sliding rod, pull block, wedge-shaped buckle, clamping spring, locking plate, and wedge-shaped groove, allows for adjustment of the extension distance of each positioning rod within a sleeve. This meets the insertion requirements of welding positioning holes for car doors of different thicknesses, improving the flexibility of the skid frame. The locking plate can lock the sliding plate, thereby locking the positioning rod and ensuring the insertion effect of the positioning rod into the car door positioning hole after adjustment. This prevents the car door from shaking or even falling off during welding, thus improving welding efficiency.

[0027] 4. This invention, through the design of a servo motor, a second lead screw, a second slider, a pulley, and a guide rail, allows the four positioning rods and the car door placed on the positioning rods to slide horizontally on the production line after welding via a sliding frame, so as to transport them to the next processing step. This eliminates the need for manual handling of the car door, saving labor costs, reducing handling time, and improving the conveying efficiency of the car door.

[0028] 5. This invention designs a rotating mechanism, namely a turntable, a rotating shaft, and a drive assembly. After the car door is loaded, the welding equipment welds the points on the car door one by one. When the welding of a part of the car door is completed, the controller starts the drive assembly, thereby driving the turntable and the car door on top to rotate a certain angle, which facilitates the quick welding of the next point on the car door. There is no need to manually move the car door, which greatly reduces the time spent adjusting the car door during the welding process, and thus helps to improve the welding efficiency of the car door. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below.

[0030] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0031] Figure 2 for Figure 1 Enlarged view of point A in the image;

[0032] Figure 3 for Figure 1 Enlarged view of point B in the image;

[0033] Figure 4 This is a schematic diagram of the cross-sectional structure of the lifting frame and sliding frame of the present invention. Figure 1 ;

[0034] Figure 5 for Figure 4 Enlarged view of point C in the image;

[0035] Figure 6 for Figure 4 Enlarged view of point D in the image;

[0036] Figure 7 This is a three-dimensional structural diagram of the turntable and positioning mechanism of the present invention;

[0037] Figure 8 for Figure 7 Enlarged view of point E in the image;

[0038] Figure 9 for Figure 7 Enlarged view of point F in the image;

[0039] Figure 10This is a schematic diagram of the bottom structure of the turntable of the present invention;

[0040] Figure 11 This is a schematic diagram of the cross-sectional structure of the lifting frame and sliding frame of the present invention. Figure 2 ;

[0041] Figure 12 for Figure 11 Enlarged view of point G in the image;

[0042] In the diagram: 10 sliding frame, 11 lifting frame, 12 guide rod, 13 first slider, 14 turntable, 15 rotating shaft, 16 limiting platform, 17 positioning rod, 18 electric push rod, 19 push block, 20 sliding plate, 21 sliding bar, 22 sliding column, 23 sliding rail, 24 micro motor, 25 turntable, 26 connecting rod, 27 guide block, 28 sleeve, 29 sliding piece, 30 handle, 31 sliding rod, 32 pull block, 33 wedge buckle, 34 clamping spring, 35 locking plate, 36 wedge groove, 37 stepper motor, 38 synchronous belt, 39 first lead screw, 40 synchronous pulley, 41 lifting block, 42 ​​DC motor, 43 worm gear, 44 worm wheel, 45 servo motor, 46 second lead screw, 47 second slider, 48 pulley, 49 guide rail, 50 clearance notch. Detailed Implementation

[0043] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0044] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions.

[0045] Reference Figures 1 to 12 As shown, the present invention provides an intelligent sliding pry frame for car door welding, including a base;

[0046] It also includes a sliding frame 10, a lifting mechanism, a rotating mechanism, and a positioning mechanism;

[0047] The sliding frame 10 is slidably mounted on the top of the base;

[0048] The lifting mechanism is mounted on the sliding frame 10. The lifting mechanism includes a lifting frame 11 and a rotating component. Four guide rods 12 are symmetrically arranged on the top of the sliding frame 10. A first slider 13 is slidably mounted on the outer wall of each guide rod 12. The lifting frame 11 is fixed between the four first sliders 13. The rotating component is inserted into the sliding frame 10.

[0049] A support plate is fixedly provided on the outer wall of the lifting frame 11. A rotating mechanism is provided on the support plate. The rotating mechanism includes a turntable 14, a rotating shaft 15 and a drive assembly. The rotating shaft 15 is rotatably provided on the top of the support plate. A limiting platform 16 is fixedly provided on the top of the lifting frame 11. The turntable 14 is fixedly provided on the top of the rotating shaft 15. The rotating shaft 15 and the limiting platform 16 are rotatably connected. The drive assembly is provided between the support plate and the rotating shaft 15.

[0050] The positioning mechanism is located on the outer wall of the turntable 14. The positioning mechanism includes four positioning rods 17, four longitudinal adjustment components and four transverse adjustment components. The four longitudinal adjustment components are symmetrically arranged at the bottom of the turntable 14, each transverse adjustment is located at the top of a longitudinal adjustment component, and each positioning rod 17 is located on a transverse adjustment component.

[0051] Reference Figures 1 to 12 As shown, each longitudinal adjustment component includes an electric push rod 18, a push block 19, a slide plate 20, and two slide bars 21. Eight slide grooves are symmetrically opened on the outer wall of the turntable 14. The two slide bars 21 are slidably disposed inside two of the slide grooves. The slide plate 20 and the push block 19 are respectively fixedly disposed on the top and bottom of the two slide bars 21. The electric push rod 18 is fixedly disposed on the bottom of the turntable 14, and its output end is fixedly connected to one end of the outer wall of the push block 19. The spacing of the positioning holes of different sizes and types of car doors varies. When the spacing of the two longitudinal positioning holes of the car door changes, the electric push rod 18 is activated by the controller, thereby causing its output end to extend or retract. Since its output end is fixedly connected to the two slide bars 21 through the push block 19, and since the two slide bars 21 are fixedly connected to the slide plate 20, the positioning rod 17 is designed on the slide plate 20 through the slide column 22, and then the positioning rod 17 is driven to slide longitudinally through the slide column 22 until the insertion requirements of the two longitudinal positioning holes of the car door are met.

[0052] Reference Figures 1 to 12As shown, each lateral adjustment component includes a slide column 22, a slide rail 23, a micro motor 24, a turntable 25, a connecting rod 26, a guide block 27, and a sleeve 28. The slide rail 23 is fixedly mounted on the top of the slide plate 20, the slide column 22 is slidably mounted on the top of the slide rail 23, the micro motor 24 is fixedly mounted on the top of the slide plate 20, the turntable 25 is fixedly mounted on its output end, the guide block 27 is fixedly mounted on the bottom of the slide column 22, and the connecting rod 26 is hinged between the guide block 27 and the turntable 25. A guide groove for the guide block 27 to slide horizontally is provided on the outer wall of one end of the slide rail 23. The sleeve 28 is fixedly mounted on the top of the slide column 22, and the center of the sleeve 28 is provided with an clearance hole for the positioning rod 17 to rise and fall. The spacing of the positioning holes varies for different sizes and types of car doors. When the spacing between the two positioning holes of the car door in the lateral direction changes... When changes occur, the micro motor 24 is activated by the controller, causing its output end to drive the turntable 25 to rotate. Since the turntable 25 and the guide block 27 are respectively hinged to the two ends of the connecting rod 26, the bottom of the sliding column 22 is slidably connected to the slide rail 23, the guide block 27 is fixedly connected to the bottom outer wall of the sliding column 22, the sleeve 28 is fixedly connected to the top of the sliding column 22, and the positioning rod 17 is inserted into the sleeve 28. Then, the positioning rod 17 is driven to slide laterally through the sliding column 22 until the insertion requirements of the two positioning holes in the lateral direction of the car door are met. With the cooperation of the longitudinal adjustment component, the four-point positioning of the car door is realized, which facilitates subsequent welding. This allows the device to adaptably adjust the positioning points of the four insertion rods on the outer wall of the car door according to the specific type and size of the car door to be welded, thereby improving the practicality and intelligence of the frame.

[0053] Reference Figures 1 to 12As shown, a sliding plate 29 is fixedly mounted on the outer wall of the positioning rod 17, a handle 30 is fixedly mounted on the outer wall of the sliding plate 29, and a sliding rod 31 is slidably mounted on the outer wall of the sliding plate 29. A pull block 32 and a wedge-shaped buckle 33 are fixedly mounted at both ends of the sliding rod 31, respectively. The pull block 32 is slidably connected to the sliding plate 29 via a guide rod. A retaining spring 34 is sleeved on the outer wall of the sliding rod 31, and the wedge-shaped buckle 33 and the sliding plate 29 respectively abut against both ends of the retaining spring 34. A locking plate 35 is fixedly mounted on the top of each sliding column 22. The outer wall of the sleeve has several wedge-shaped grooves 36 at equal intervals for the wedge-shaped buckles 33 to engage with. The wedge-shaped buckles 33 engage with one of the wedge-shaped grooves 36. Different sizes and types of car doors have different thicknesses, resulting in variations in the depth of the door positioning holes. When encountering a deeper door positioning hole, the handle 30 is manually grasped and pulled upwards. This causes the sliding piece 29 to slide vertically upwards along the axial direction of the sleeve 28 via the handle 30. The outer wall of the sleeve 28 has clearance grooves for the sliding piece 29 to slide. The wedge-shaped buckle 33 is mounted on the outer wall of the slide plate 29 via the slide rod 31. The wedge-shaped buckle 33 is narrower at the top and wider at the bottom, so that when the wedge-shaped buckle 33 slides vertically upward with the slide plate 29, the inclined surface of the wedge-shaped buckle 33 is pressed against the locking plate 35, causing the clamping spring 34 to change from its initial state to a tense state. This causes the wedge-shaped buckle 33 to disengage from the wedge-shaped groove 36 via the slide rod 31. When the positioning rod 17 slides upward inside the sleeve 28 to meet the insertion depth of the positioning hole for welding the door, the worker can release the pressure. When the sliding rod 31 is opened, the clamping spring 34 changes from a taut state to an initial state. Then, the wedge-shaped buckle 33 is pushed into the corresponding wedge-shaped groove 36 through the sliding rod 31. The locking plate 35 locks the sliding piece 29, and further locks the positioning rod 17, ensuring the positioning effect of the positioning rod 17 after adjustment. This prevents the door from shaking or even falling off during the welding process, which helps to improve welding efficiency. At the same time, it can meet the positioning requirements of this frame for different types and sizes of doors, and improves the flexibility of this frame.

[0054] Reference Figures 1 to 12As shown, the rotating assembly includes a stepper motor 37, a synchronous belt 38, two first lead screws 39, and three synchronous pulleys 40. The stepper motor 37 is fixedly mounted on the bottom of the sliding frame 10. The two first lead screws 39 are rotatably mounted on the sliding frame 10. The three synchronous pulleys 40 are respectively fixed to the output end of the stepper motor 37 and the bottom end of the two first lead screws 39. The synchronous belt 38 is sleeved between the three synchronous pulleys 40. Currently, the height of most car door welding skid frames is relatively low. When workers load materials onto the skid frame, they need to bend over to place the car door onto the positioning rod 17 of the frame. Based on the current daily processing volume of the factory, several hundred car doors need to be welded per day. This means that workers... The loading and unloading mechanism requires workers to bend over hundreds of times a day, and the heavy weight of the loading and unloading door poses a significant health risk. Therefore, a lifting mechanism was designed. The frame is equipped with a controller, and all electrical devices on the frame are electrically connected to the controller. When the loading and unloading door needs to be loaded onto the frame, the controller starts the stepper motor 37, which drives one of the synchronous pulleys 40 to rotate. Since the output end of the stepper motor 37 and the bottom ends of the two first lead screws 39 are fixedly connected to the three synchronous pulleys 40 respectively, and the three synchronous pulleys 40 are connected by a synchronous belt 38, and the two first lead screws 39 are rotatably located on the top of the sliding frame 10, thus driving the two lead screws to rotate synchronously.

[0055] Reference Figures 1 to 12 As shown, lifting blocks 41 are fixedly installed on the outer walls of both ends of the lifting frame 11. Each lifting block 41 is threadedly connected to a first lead screw 39. Two L-shaped plates are symmetrically arranged on the top of the sliding frame 10. The end of each first lead screw 39 away from the synchronous wheel 40 is rotatably connected to the top of an L-shaped plate. When the two lead screws rotate synchronously, since each lifting block 41 is threadedly connected to a first lead screw 39, the top of the sliding frame 10 is fixedly connected to the bottom of the two L-shaped plates, and the end of each first lead screw 39 away from the synchronous wheel 40 is rotatably connected to the top of an L-shaped plate, the lifting frame 11 is slidably connected to the sliding frame 10 through four first sliders 13 and four guide rods 12, thereby allowing the lifting frame 11 and its four positioning rods 17 on the top to rise vertically to a suitable height. This makes it convenient for workers to directly place the car door between the four positioning rods 17, eliminating the need for workers to frequently bend over to load the car door, greatly reducing the labor intensity of workers and helping to protect their health.

[0056] Reference Figures 1 to 12As shown, the drive assembly includes a DC motor 42, a worm gear 43, and a worm wheel 44. Two limiting plates are symmetrically arranged on the top of the support plate. The worm gear 43 is rotatably positioned between the two limiting plates. The DC motor 42 is inserted into one of the limiting plates, and its output end is fixedly connected to one end of the worm gear 43. The worm wheel 44 is fixedly mounted on the rotating shaft 15 and meshes with the worm gear 43. After the car door is loaded, welding equipment is used to weld the door points one by one. When a portion of the door points are welded, the controller starts the DC motor 42, causing its output end to drive the worm gear 43 to rotate. Since the output end of the DC motor 42 is fixedly connected to one end of the worm gear 43, and the worm wheel 44 is fixedly connected to the rotating shaft 15, and the top of the rotating shaft 15 is fixedly connected to the turntable 14, the worm wheel 44 meshes with the worm gear 43, thereby causing the turntable 14 and the car door on top to rotate at a certain angle, facilitating welding of the next point on the car door.

[0057] Reference Figures 1 to 12 As shown, two upright plates are fixedly installed on the top of the base. A servo motor 45 is inserted into the outer wall of one of the upright plates. A second lead screw 46 is rotatably connected between the two upright plates. The output end of the servo motor 45 is fixedly connected to one end of the second lead screw 46. A second slider 47 is fixedly installed at the bottom of the sliding frame 10 through four connecting rods. The second slider 47 is threadedly connected to the second lead screw 46. When all points of the car door are welded, the servo motor 45 is started by the controller. Since the second lead screw 46 is rotatably connected to the two upright plates, and the output end of the servo motor 45 is fixedly connected to one end of the second lead screw 46, and the bottom of the sliding frame 10 is fixedly connected to the second slider 47 through four connecting rods, the second slider 47 is threadedly connected to the second lead screw 46, thereby causing the sliding frame 10 to drive the welded car door to slide on the assembly line for transport to the next processing step. This eliminates the need for manual handling, saving labor costs, reducing handling time, and improving the conveying efficiency of the car door.

[0058] Reference Figures 1 to 12 As shown, four pulleys 48 are symmetrically arranged at both ends of the sliding frame 10, and two guide rails 49 are symmetrically arranged at the top of the base. Each pair of pulleys 48 located on the same side is slidably connected to one guide rail 49. When the second lead screw 46 and the second slider 47 drive the sliding frame 10 to slide horizontally at the top of the base, the four pulleys 48 slide on the top of the two guide rails 49 respectively, which guides the sliding frame 10 and ensures that the sliding frame 10 slides in a straight line, preventing the sliding trajectory from tilting. At the same time, it can also support the sliding frame 10 and prevent the second lead screw 46 from being insufficient in supporting and limiting the sliding frame 10.

[0059] Reference Figures 1 to 12As shown, the sliding frame 10 has an avoidance notch 50 at one end near the servo motor 45. The design of the avoidance notch 50 is mainly to avoid the second lead screw 46 when the sliding frame 10 slides horizontally on the top of the base, so as to prevent the sliding frame 10 from colliding with the second lead screw 46 during the sliding process and improve the running stability of the sliding frame 10.

[0060] The working principle of this invention: Currently, the height of most sliding skid frames used for car door welding is relatively low. When loading materials onto the skid frame, workers need to bend over to place the car door onto the positioning rod 17 of the frame. According to the current daily processing volume of the factory, hundreds of car doors need to be welded every day. This means that workers need to bend over to load car doors hundreds of times a day. In addition, the car doors are heavy, which is extremely harmful to the workers' health. Therefore, a lifting mechanism was designed. This frame is equipped with a controller, and all electrical devices on the frame are electrically connected to the controller. When a car door needs to be loaded onto this frame, the stepper motor 37 is started by the controller, so that its output end drives one of the synchronous pulleys 40 to rotate. Since the output end of the stepper motor 37 and the bottom ends of the two first lead screws 39 are respectively fixedly connected to the three synchronous pulleys 40, and the three synchronous pulleys 40 are connected by a synchronous belt 38, and the two first lead screws 39 are rotatably located on the top of the sliding frame 10, thus driving the two lead screws to rotate synchronously.

[0061] When the two lead screws rotate synchronously, each lifting block 41 is threadedly connected to a first lead screw 39, the top of the sliding frame 10 is fixedly connected to the bottom of the two L-shaped plates, and the end of each first lead screw 39 away from the synchronous wheel 40 is rotatably connected to the top of an L-shaped plate. The lifting frame 11 is slidably connected to the sliding frame 10 through four first sliders 13 and four guide rods 12, thereby causing the lifting frame 11 and its four positioning rods 17 at the top to rise vertically to a suitable height. This makes it convenient for workers to directly place the car door between the four positioning rods 17, eliminating the need for workers to frequently bend over to load the car door, greatly reducing the labor intensity of workers and helping to protect their health.

[0062] After the car door is loaded, welding equipment is used to weld the door points one by one. When the welding of a part of the door is completed, the controller starts the DC motor 42, which drives the worm gear 43 to rotate. Since the output end of the DC motor 42 is fixedly connected to one end of the worm gear 43, the worm wheel 44 is fixedly connected to the rotating shaft 15, the top end of the rotating shaft 15 is fixedly connected to the turntable 14, and the worm wheel 44 meshes with the worm gear 43, thereby driving the turntable 14 and the car door on top of it to rotate a certain angle, which facilitates the welding of the next point of the car door.

[0063] Once all points on the car door are welded, the servo motor 45 is started by the controller. Since the second lead screw 46 is rotatably connected to the two upright plates, the output end of the servo motor 45 is fixedly connected to one end of the second lead screw 46. The bottom of the sliding frame 10 is fixedly connected to the second slider 47 through four connecting rods. The second slider 47 is threadedly connected to the second lead screw 46, thereby causing the sliding frame 10 to drive the welded car door to slide on the assembly line for transport to the next processing step. This eliminates the need for manual handling, saving labor costs and reducing handling time, thus improving the car door's transport efficiency.

[0064] When the second lead screw 46 and the second slider 47 drive the sliding frame 10 to slide horizontally on the top of the base, the four pulleys 48 slide on the top of the two guide rails 49 respectively, which guides the sliding frame 10, ensuring that the sliding frame 10 slides in a straight line and preventing the sliding trajectory from tilting. At the same time, it can support the sliding frame 10 and prevent the second lead screw 46 from being insufficient in supporting and limiting the sliding frame 10.

[0065] The design of the clearance notch 50 is mainly to avoid the second lead screw 46 when the sliding frame 10 slides horizontally on the top of the base, so as to prevent the sliding frame 10 from colliding with the second lead screw 46 during the sliding process and improve the running stability of the sliding frame 10.

[0066] Different sizes and types of car doors have varying thicknesses, resulting in differences in the depth of the door positioning holes. When encountering a deeper door positioning hole, manually grasping the handle 30 and pulling it upwards causes the slider 29 to slide vertically upwards along the sleeve 28. The outer wall of the sleeve 28 has a clearance groove for the slider 29 to slide. Since the wedge-shaped buckle 33 is installed on the outer wall of the slider 29 via the slide rod 31, and the wedge-shaped buckle 33 is narrower at the top and wider at the bottom, when the wedge-shaped buckle 33 slides vertically upwards with the slider 29, the inclined surface of the wedge-shaped buckle 33 is pressed against the locking plate 35, causing the clamping spring 34 to change from its initial state to a taut state, thereby driving the slider 31 to... The wedge-shaped buckle 33 disengages from the inside of the wedge-shaped groove 36. When the positioning rod 17 slides up inside the sleeve 28 to meet the insertion depth of the positioning hole of the door to be welded, the worker releases the slide rod 31, and the spring 34 changes from a tense state to an initial state. Then, the wedge-shaped buckle 33 is pushed into the corresponding wedge-shaped groove 36 through the slide rod 31. The locking plate 35 locks the slide piece 29, and further locks the positioning rod 17, ensuring the positioning effect of the positioning rod 17 after adjustment. This prevents the door from shaking or even falling off during the welding process, which helps to improve welding efficiency. At the same time, it can meet the positioning requirements of this frame for different types and sizes of doors, improving the flexibility of this frame.

[0067] The spacing of the positioning holes varies for different sizes and types of car doors. When the spacing between the two positioning holes in the longitudinal direction of the car door changes, the electric push rod 18 is activated by the controller, causing its output end to extend or retract. Since its output end is fixedly connected to the two slide bars 21 through the push block 19, and since the two slide bars 21 are fixedly connected to the slide plate 20, the positioning rod 17 is designed on the slide plate 20 through the slide column 22, and then the positioning rod 17 is driven to slide longitudinally through the slide column 22 to meet the insertion requirements of the two positioning holes in the longitudinal direction of the car door.

[0068] The spacing of the positioning holes varies for different sizes and types of car doors. When the spacing between the two horizontal positioning holes of the car door changes, the micro motor 24 is activated by the controller, causing its output end to drive the turntable 25 to rotate. Since the turntable 25 and the guide block 27 are respectively hinged to the two ends of the connecting rod 26, the bottom of the sliding column 22 is slidably connected to the slide rail 23, the guide block 27 is fixedly connected to the bottom outer wall of the sliding column 22, the sleeve 28 is fixedly connected to the top of the sliding column 22, and the positioning rod 17 is inserted into the sleeve 28. Then, the positioning rod 17 is driven to slide laterally through the sliding column 22 until the insertion requirements of the two horizontal positioning holes of the car door are met. With the cooperation of the longitudinal adjustment component, the four-point positioning of the car door is realized, which facilitates subsequent welding. This device can adaptably adjust the positioning points of the four insertion rods on the outer wall of the car door according to the specific type and size of the car door to be welded, thereby improving the practicality and intelligence of the frame.

Claims

1. A smart sliding pry frame for welding car doors, comprising a base, characterized in that: It also includes a sliding frame (10), a lifting mechanism, a rotating mechanism, and a positioning mechanism; The sliding frame (10) is slidably set on the top of the base; The lifting mechanism is located on the sliding frame (10). The lifting mechanism includes a lifting frame (11) and a rotating component. Four guide rods (12) are symmetrically arranged on the top of the sliding frame (10). A first slider (13) is slidably provided on the outer wall of each guide rod (12). The lifting frame (11) is fixed between the four first sliders (13). The rotating component is inserted into the sliding frame (10). A support plate is fixedly provided on the outer wall of the lifting frame (11), and a rotating mechanism is provided on the support plate. The rotating mechanism includes a turntable (14), a rotating shaft (15), and a drive assembly. The rotating shaft (15) is rotatably provided on the top of the support plate. A limiting platform (16) is fixedly provided on the top of the lifting frame (11). The turntable (14) is fixedly provided on the top of the rotating shaft (15). The rotating shaft (15) is rotatably connected to the limiting platform (16). The drive assembly is provided between the support plate and the rotating shaft (15). The positioning mechanism is located on the outer wall of the turntable (14). The positioning mechanism includes four positioning rods (17), four longitudinal adjustment components and four transverse adjustment components. The four longitudinal adjustment components are symmetrically arranged at the bottom of the turntable (14). Each transverse adjustment is located at the top of a longitudinal adjustment component. Each positioning rod (17) is located on a transverse adjustment component. Each longitudinal adjustment component includes an electric push rod (18), a push block (19), a slide plate (20), and two slide bars (21). Eight slide grooves are symmetrically opened on the outer wall of the turntable (14). The two slide bars (21) are slidably disposed inside two of the slide grooves. The slide plate (20) and the push block (19) are fixedly disposed on the top and bottom of the two slide bars (21), respectively. The electric push rod (18) is fixedly disposed on the bottom of the turntable (14), and its output end is fixedly connected to one end of the outer wall of the push block (19). Each lateral adjustment component includes a slide column (22), a slide rail (23), a micro motor (24), a turntable (25), a connecting rod (26), a guide block (27), and a sleeve (28). The slide rail (23) is fixed on the top of the slide plate (20), the slide column (22) is slidably mounted on the top of the slide rail (23), the micro motor (24) is fixed on the top of the slide plate (20), the turntable (25) is fixed on its output end, the guide block (27) is fixed on the bottom of the slide column (22), the connecting rod (26) is hinged between the guide block (27) and the turntable (25), a guide groove for the guide block (27) to slide horizontally is provided on the outer wall of one end of the slide rail (23), the sleeve (28) is fixed on the top of the slide column (22), and the center of the sleeve (28) is provided with a clearance hole for the positioning rod (17) to rise and fall. A sliding plate (29) is fixed on the outer wall of the positioning rod (17). A handle (30) is fixed on the outer wall of the sliding plate (29). A sliding rod (31) is slidably provided on the outer wall of the sliding plate (29). A pull block (32) and a wedge buckle (33) are fixed at both ends of the sliding rod (31). The pull block (32) is slidably connected to the sliding plate (29) through the guide rod. A retaining spring (34) is sleeved on the outer wall of the sliding rod (31). The wedge buckle (33) and the sliding plate (29) abut against the two ends of the retaining spring (34) respectively. A locking plate (35) is fixedly provided at the top of each sliding column (22). Several wedge-shaped slots (36) for the wedge buckle (33) to engage are opened at equal intervals on the outer wall of the locking plate (35). The wedge buckle (33) engages with one of the wedge-shaped slots (36). The rotating assembly includes a stepper motor (37), a timing belt (38), two first lead screws (39), and three timing pulleys (40). The stepper motor (37) is fixedly mounted on the bottom of the sliding frame (10). The two first lead screws (39) are rotatably mounted on the sliding frame (10). The three timing pulleys (40) are respectively fixedly mounted on the output end of the stepper motor (37) and the bottom end of the two first lead screws (39). The timing belt (38) is sleeved between the three timing pulleys (40). Lifting blocks (41) are fixed on the outer walls of both ends of the lifting frame (11). Each lifting block (41) is threadedly connected to a first screw (39). Two L-shaped plates are symmetrically arranged on the top of the sliding frame (10). The end of each first screw (39) away from the synchronous wheel (40) is rotatably connected to the top of an L-shaped plate. The drive assembly includes a DC motor (42), a worm (43) and a worm wheel (44). Two limiting plates are symmetrically arranged on the top of the support plate. The worm (43) is rotatably positioned between the two limiting plates. The DC motor (42) is inserted into one of the limiting plates, and its output end is fixedly connected to one end of the worm (43). The worm wheel (44) is fixedly mounted on the rotating shaft (15) and meshes with the worm (43). Two upright plates are fixedly installed on the top of the base. A servo motor (45) is inserted into the outer wall of one of the upright plates. A second lead screw (46) is rotatably installed between the two upright plates. The output end of the servo motor (45) is fixedly connected to one end of the second lead screw (46). A second slider (47) is fixedly installed at the bottom of the sliding frame (10) through four connecting rods. The second slider (47) is threadedly connected to the second lead screw (46). The sliding frame (10) has four pulleys (48) symmetrically arranged at both ends, and two guide rails (49) symmetrically arranged at the top of the base. Each pair of pulleys (48) located on the same side is slidably connected to one guide rail (49).

2. The intelligent sliding skid frame for welding car doors according to claim 1, characterized in that: The sliding frame (10) has a clearance notch (50) at one end near the servo motor (45).

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