A clamping force locking mechanism for a rocker panel processing

Abstract

The utility model discloses a kind of clamping force locking mechanisms for threshold plate processing, including processing table, the bottom both sides of processing table are fixedly connected with a pair of support legs, the bottom of processing table is installed with motor, the both ends output shaft end of motor is fixedly connected with lead screw through coupling, the surface of processing table is set with a pair of sliding slot, the top of each sliding slot is provided with clamping frame, the bottom of clamping frame is fixedly connected with base, the base is T-shaped, its top is set with lower clamping slot, the bottom of base is fixedly connected with sliding block, transmission hole is set on the sliding block, the top of clamping frame is provided with clamping mechanism, the sidewall between two pairs of support legs is fixedly connected with supporting plate, and recycling tank is placed on the supporting plate.The utility model can lock and fix clamping force after clamping threshold plate, and threshold plate is not easy to loosen;Size interval is adjustable, to avoid interfering with the movement trajectory of processing equipment.

Description

Technical Field

[0001] This utility model belongs to the field of clamping and locking structure technology, and in particular relates to a clamping force locking mechanism for processing door sill plates. Background Technology

[0002] The car door sill, also called a foot pedal or door sill protector, is a key structural component located below the car door and on the bottom side of the vehicle body. It mainly consists of two parts: the inner door sill and the outer door sill trim. It serves as the foundation for the vehicle's structural safety and rigidity, while also providing aesthetic and decorative appeal.

[0003] The clamping and locking of automotive door sill plates during processing (such as welding, drilling, riveting, gluing, etc.) is a key step to ensure their production accuracy, quality and efficiency. According to the search, a clamping device for plates with the publication number CN218170086U is disclosed on the Chinese Patent Network. This clamping device can achieve stable clamping of the plates and reduce damage to the plates. However, there are some defects and deficiencies that need to be improved: (1) Most of the existing clamping structures provide the initial clamping force through pneumatic / hydraulic cylinders. When clamping the door sill plate, once there is a fluctuation in the air source pressure or oil pipe leakage, the clamping force will drop instantly, which will cause the door sill plate parts to loosen during processing. At best, the parts will be scrapped, and at worst, the tool will be hit. (2) The dimensions of some existing clamping structures are relatively fixed and it is difficult to adjust them flexibly according to the different lengths of the door sill plates. The central area of ​​the door sill plate is usually the dense work area of ​​the processing equipment. When processing the door sill plate, the movement trajectory of the processing equipment and the clamping structure are prone to physical interference. Therefore, the clamping force locking mechanism for sill plate processing provided by this utility model is of great significance in addressing the above problems. Utility Model Content

[0004] This utility model provides a clamping force locking mechanism for door sill plate processing. The clamping mechanism and clamping frame work together to clamp the door sill plate for precise positioning. After clamping the door sill plate, nuts are threaded onto the upper and lower locking rods and tightened until each nut is against the upper top and lower bottom surfaces of the clamping frame. At this point, the interaction between the upper and lower locking rods and the nuts locks and fixes the position of the pressure plate, maintaining a consistent clamping force. This effectively prevents clamping force fluctuations due to pressure variations. The problem stems from a sudden drop that causes the door sill plate to loosen during processing. A drive motor can rotate the lead screws at both ends. As the lead screws rotate, their threaded engagement with the transmission hole causes the slider and two clamping frames to move closer or further apart. This allows for rapid adjustment of the distance between the clamping frames and the clamping mechanism based on the length of the door sill plate, ensuring the center area of ​​the door sill plate is cleared. This effectively prevents physical interference between the equipment's movement trajectory and the clamping frames and mechanism due to excessively close proximity during processing, thus solving the problem described in the background technology.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model discloses a clamping force locking mechanism for processing door sill plates, comprising a processing table. A pair of support legs are fixedly connected to both sides of the bottom of the processing table. A fixing plate is provided between each pair of support legs, and the fixing plate is fixedly connected to the bottom of the processing table. A motor is installed at the bottom of the processing table. The output shafts at both ends of the motor are fixedly connected to lead screws via couplings. A pair of rectangular sliding grooves are provided on the surface of the processing table, symmetrically distributed on the left and right sides of the motor. A clamping frame is provided above each sliding groove. The clamping frame has a rectangular frame structure, with a pair of upper guide holes and a pair of lower guide holes at its top and bottom, respectively. A base is fixedly connected to the bottom of the clamping frame. The base is T-shaped, with a lower slot at its top, the top of which penetrates the top of the clamping frame. A slider is fixedly connected to the bottom of the base, and a transmission hole is provided on the slider. A clamping mechanism is provided at the top of the clamping frame. A support plate is fixedly connected between the side walls of the two pairs of support legs, and a recycling trough is placed on the support plate.

[0007] The clamping mechanism includes an electric telescopic rod, which is installed on the top of the clamping frame. The bottom end of the electric telescopic rod passes through the top of the clamping frame and is fixedly connected to a pressure plate. The bottom surface of the pressure plate has an upper slot, and the top and bottom of the pressure plate are respectively fixedly connected to a pair of upper locking rods and a pair of lower locking rods. Each upper locking rod and lower locking rod has an external thread on its body and is threaded with a nut that mates with it.

[0008] Furthermore, both the upper and lower card slots are rectangular, with corresponding equal widths and their centers located on the same straight line, and the walls of both the upper and lower card slots are provided with protective pads.

[0009] Furthermore, the diameters of the upper guide hole and the lower guide hole are respectively equal to the diameters of the upper locking rod and the lower locking rod, and each of the upper locking rods and the lower locking rod passes through the corresponding upper guide hole and the lower guide hole.

[0010] Furthermore, the external threads of the two lead screws are in opposite directions, and their ends are rotatably connected to the two fixed plates by bearings. The slider is rectangular, and its width is equal to the width of the slide groove. The walls of the transmission holes on the two sliders are respectively provided with internal threads that cooperate with the two lead screws. The diameter of the transmission hole is equal to the diameter of the lead screw. The two lead screws pass through the transmission holes on the two sliders respectively.

[0011] Furthermore, the top surface of the processing table is provided with a pair of guide grooves, which are rectangular and symmetrically distributed on the front and rear sides of the slide groove. The bottom of the base is fixedly connected with a pair of guide blocks, which are symmetrically distributed on the front and rear sides of the slider. Their width and height are equal to the width and depth of the guide groove, respectively, and each guide block is located in its corresponding guide groove.

[0012] Furthermore, a pair of reinforcing blocks are fixedly connected to the top sidewalls on both sides of the base. The reinforcing blocks are triangular in shape, with their tops fixedly connected to the bottom of the clamping frame, and the two reinforcing blocks are symmetrically distributed on the front and rear sides of the lower guide hole.

[0013] Furthermore, the recycling trough is rectangular, with a width greater than the width of the chute, and the length of the recycling trough is greater than the maximum distance between the two chutes.

[0014] The present invention has the following advantages over the prior art:

[0015] (1) The clamping force can be locked and fixed after the sill plate is clamped, and the sill plate is not easy to loosen: The sill plate can be clamped by the mutual cooperation between the clamping mechanism and the clamping frame to achieve precise positioning. After the sill plate is clamped by the clamping mechanism, the nuts can be threaded onto each upper locking rod and lower locking rod and tightened until each nut is attached to the upper top surface and lower bottom surface of the clamping frame. At this time, the position of the pressure plate can be locked and fixed by the mutual cooperation between the upper locking rod, lower locking rod and nut, and the clamping force applied to it can be kept constant, so as to effectively prevent the clamping force from dropping instantly due to pressure fluctuations and other reasons, which would cause the sill plate to loosen during the processing.

[0016] ( ) The size spacing is adjustable to avoid interference with the movement trajectory of the processing equipment: The drive motor can drive the lead screws at both ends to rotate. When the two lead screws rotate, they can drive the sliders and the two clamping frames to move closer or further apart through the threaded engagement with the transmission hole. This allows for quick adjustment of the spacing between the two clamping frames and the clamping mechanism according to the different lengths of the sill plate, ensuring that the center area of ​​the sill plate is left unoccupied. This effectively avoids physical interference between the movement trajectory of the equipment and the clamping frames and clamping mechanism due to the close distance during processing.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the clamping force locking mechanism for processing a door sill plate according to the present invention;

[0020] Figure 2 This is a schematic diagram of the processing table in this utility model;

[0021] Figure 3 This is a schematic diagram of the clamping frame in this utility model;

[0022] Figure 4 This is a schematic diagram of the clamping mechanism in this utility model;

[0023] Figure 5 This is a schematic diagram of the protective pad structure in this utility model;

[0024] Figure 6 This is a schematic diagram of the recycling tank in this utility model.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Processing table; 2. Support leg; 3. Fixing plate; 4. Motor; 5. Lead screw; 6. Slide groove; 7. Clamping frame; 8. Upper guide hole; 9. Lower guide hole; 10. Base; 11. Lower slot; 12. Slider; 13. Transmission hole; 14. Support plate; 15. Recycling trough; 16. Electric telescopic rod; 17. Pressure plate; 18. Upper slot; 19. Upper locking rod; 20. Lower locking rod; 21. Nut; 22. Protective pad; 23. Guide groove; 24. Guide block; 25. Reinforcing block. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be understood that the terms "relative", "one end", "inner", "lateral", "end", "both ends", "both sides", "front", "one end face", "the other end face", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] Please see Figure 1-6 As shown, this utility model discloses a clamping force locking mechanism for processing door sill plates, comprising a processing table 1. A pair of support legs 2 are fixedly connected to both sides of the bottom of the processing table 1. A fixing plate 3 is provided between each pair of support legs 2, and the fixing plate 3 is fixedly connected to the bottom of the processing table 1. A motor 4 is installed at the bottom of the processing table 1. The ends of the output shafts of the motor 4 are fixedly connected to lead screws 5 via couplings. A pair of rectangular sliding grooves 6 are formed on the surface of the processing table 1 and are symmetrically distributed on the left and right sides of the motor 4. A clamping force locking mechanism is provided above each sliding groove 6. The clamping frame 7 has a rectangular frame structure. It has a pair of upper guide holes 8 and a pair of lower guide holes 9 at its top and bottom, respectively. The bottom of the clamping frame 7 is fixedly connected to a base 10. The base 10 is T-shaped and has a lower slot 11 at its top. The top of the lower slot 11 passes through the top of the clamping frame 7. The bottom of the base 10 is fixedly connected to a slider 12. The slider 12 has a transmission hole 13. The top of the clamping frame 7 is equipped with a clamping mechanism. A support plate 14 is fixedly connected between the side walls of the two pairs of support legs 2. A recycling trough 15 is placed on the support plate 14.

[0030] The clamping mechanism includes an electric telescopic rod 16, which is mounted on the top of the clamping frame 7. The bottom end of its output shaft passes through the top of the clamping frame 7 and is fixedly connected to a pressure plate 17. The bottom surface of the pressure plate 17 has an upper slot 18, and a pair of upper locking rods 19 and a pair of lower locking rods 20 are fixedly connected to the top and bottom of the pressure plate 17, respectively. Each upper locking rod 19 and lower locking rod 20 has an external thread on its shaft and is threadedly connected to a nut 21. When processing the car door sill plate, both ends of the door sill plate can pass through the two clamping frames 7 respectively, allowing the bottom of the door sill plate to fit against the clamping frame. The door sill plate is placed in the corresponding lower slot 11, and then the electric telescopic rod 16 is driven to move the clamping plate 17 downward until the top of the door sill plate is in contact with the corresponding upper slot 18. At this time, the door sill plate can be clamped by the cooperation between the upper slot 18 and the lower slot 11 to achieve precise positioning. The electric telescopic rod 16 is a servo electric cylinder with adjustable thrust. Different thrust levels can be set by an external controller (e.g., 5-8kN for aluminum alloy door sill plates and 8-12kN for steel door sill plates) to adapt to the clamping requirements of door sill plates of different materials, so as to avoid over-clamping deformation or under-clamping loosening.

[0031] The upper slot 18 and the lower slot 11 are both rectangular with equal widths and their centers are on the same straight line. The walls of the upper slot 18 and the lower slot 11 are provided with protective pads 22. The protective pads 22 can be made of elastic materials such as rubber and are fixed by adhesives. When the top and bottom of the door sill are attached to the upper slot 18 and the lower slot 11, the protective pads 22 can provide flexible protection to prevent damage to the surface of the door sill due to excessive force during clamping.

[0032] The diameters of the upper guide hole 8 and the lower guide hole 9 are equal to the diameters of the upper locking rod 19 and the lower locking rod 20, respectively. Each upper locking rod 19 and lower locking rod 20 passes through the corresponding upper guide hole 8 and lower guide hole 9. The clamping plate 17 can drive the upper locking rod 19 and lower locking rod 20 to move together along the corresponding upper guide hole 8 and lower guide hole 9. After the clamping mechanism has clamped the sill plate, the nuts 21 can be threaded onto each upper locking rod 19 and lower locking rod 20 and tightened until each nut 21 is tightened. The upper and lower surfaces of the clamping frame 7 are respectively attached to the upper and lower surfaces. At this time, the position of the pressure plate 17 can be locked and fixed by the cooperation between the upper locking rod 19, the lower locking rod 20 and the nut 21, and the clamping force applied is kept constant. This can effectively prevent the clamping force from dropping suddenly due to pressure fluctuations, which could cause the sill plate to loosen during processing. The distance between the top surface of the base 10 and the lower surface of the clamping frame 7 is greater than the length of the lower locking rod 20, which can ensure that the lower locking rod 20 will not interfere with the base 10 when it moves downward.

[0033] The two lead screws 5 have opposite external threads, and their ends are rotatably connected to the two fixed plates 3 via bearings. The slider 12 is rectangular, and its width is equal to the width of the slide groove 6. The transmission holes 13 on the two sliders 12 are respectively provided with internal threads that cooperate with the two lead screws 5. The diameter of the transmission holes 13 is equal to the diameter of the lead screws 5. The two lead screws 5 pass through the transmission holes 13 on the two sliders 12 respectively. The drive motor 4 can drive the lead screws 5 at both ends to rotate. When the two lead screws 5 rotate, they can drive the sliders 12 and the two clamping frames 7 to move closer or further apart through the threaded engagement with the transmission holes 13. This allows for quick adjustment of the distance between the two clamping frames 7 and the clamping mechanism according to the length of the sill plate, ensuring that the center area of ​​the sill plate is cleared. This effectively avoids physical interference between the movement trajectory of the equipment and the clamping frames 7 and the clamping mechanism due to excessive distance during processing.

[0034] The top surface of the processing table 1 is provided with a pair of guide grooves 23. The guide grooves 23 are rectangular and symmetrically distributed on the front and rear sides of the slide groove 6. The bottom of the base 10 is fixedly connected with a pair of guide blocks 24. The guide blocks 24 are symmetrically distributed on the front and rear sides of the slider 12. Their width and height are equal to the width and depth of the guide grooves 23, respectively. Each guide block 24 is located in its corresponding guide groove 23. When the clamping frame 7 moves, it can drive the base 10 together with the guide blocks 24 to slide along the inner wall of the guide groove 23. At this time, the mutual cooperation between the guide blocks 24 and the guide grooves 23 can play a guiding and limiting role to ensure that the clamping frame 7 always moves horizontally in a straight line, thereby avoiding the clamping frame 7 from shifting or tilting during movement.

[0035] The base 10 has a pair of reinforcing blocks 25 fixedly connected to the top sidewalls on both sides. The reinforcing blocks 25 are triangular in shape, and their tops are fixedly connected to the bottom of the clamping frame 7. The two reinforcing blocks 25 are symmetrically distributed on the front and rear sides of the lower guide hole 9. The connection between the clamping frame 7 and the base 10 can be reinforced by the reinforcing blocks 25 to prevent bending and deformation after being subjected to force for a long time.

[0036] The recycling trough 15 is rectangular, with a width greater than that of the chute 6, and a length greater than the maximum distance between the two chute 6. When the recycling trough 15 is placed on the pallet 14, both chute 6 are located directly above the recycling trough 15. The chute 6 runs vertically through the processing table 1, and its inner wall is smooth, which ensures that the debris and waste generated during the processing of the door sill can fall into the recycling trough 15 along the chute 6, so that the debris and waste can be uniformly recycled through the recycling trough 15.

[0037] All standard parts used in the application documents can be purchased from the market. All components in this application document can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The electrical components mentioned in this document are all electrically connected to the external main controller and power supply, and the main controller is a conventional known device that can play a control role.

[0038] The working principle of this utility model is as follows:

[0039] In use, the two ends of the car door sill plate part to be processed can be passed through the two clamping frames 7 respectively, so that the bottom of the door sill plate is attached to the corresponding lower slot 11. Then, the electric telescopic rod 16 is driven to move the pressure plate 17 downward until the top of the door sill plate is attached to the corresponding upper slot 18. At this time, the door sill plate can be clamped by the mutual cooperation between the upper slot 18 and the lower slot 11 to achieve precise positioning. After the door sill plate is clamped by the clamping mechanism, the nuts 21 can be threaded onto each upper locking rod 19 and lower locking rod 20 and tightened until each nut 21 is attached to the upper top surface and lower bottom surface of the clamping frame 7 respectively. At this time, the upper locking rod 19, lower locking rod 20 and nuts 21 are used to clamp the door sill plate. The mutual cooperation between them can lock and fix the position of the clamping plate 17 and maintain the clamping force applied, thereby effectively preventing the clamping force from dropping suddenly due to pressure fluctuations and other reasons, which would cause the sill plate to loosen during processing. The drive motor 4 can drive the lead screws 5 at both ends to rotate. When the two lead screws 5 rotate, they can drive the slider 12 and the two clamping frames 7 to move closer or further apart through the threaded engagement with the transmission hole 13. This allows for quick adjustment of the distance between the two clamping frames 7 and the clamping mechanism according to the length of the sill plate, ensuring that the center area of ​​the sill plate is cleared. This effectively avoids physical interference between the movement trajectory of the equipment and the clamping frames 7 and the clamping mechanism due to the distance being too close during processing.

[0040] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A clamping force locking mechanism for processing a door sill plate, characterized in that, The device includes a processing table, on both sides of the bottom of which a pair of support legs are fixedly connected. A fixing plate is provided between each pair of support legs and fixedly connected to the bottom of the processing table. A motor is installed at the bottom of the processing table, and the output shafts at both ends of the motor are fixedly connected to lead screws via couplings. A pair of rectangular sliding grooves are provided on the surface of the processing table and are symmetrically distributed on the left and right sides of the motor. A clamping frame is provided above each sliding groove. The clamping frame has a rectangular frame structure with a pair of upper guide holes and a pair of lower guide holes at its top and bottom, respectively. A base is fixedly connected to the bottom of the clamping frame. The base is T-shaped and has a lower slot at its top, the top of which penetrates the top of the clamping frame. A slider is fixedly connected to the bottom of the base and has a transmission hole. A clamping mechanism is provided at the top of the clamping frame. A support plate is fixedly connected between the side walls of the two pairs of support legs, and a recycling trough is placed on the support plate. The clamping mechanism includes an electric telescopic rod, which is installed on the top of the clamping frame. The bottom end of the electric telescopic rod passes through the top of the clamping frame and is fixedly connected to a pressure plate. The bottom surface of the pressure plate has an upper slot, and the top and bottom of the pressure plate are respectively fixedly connected to a pair of upper locking rods and a pair of lower locking rods. Each upper locking rod and lower locking rod has an external thread on its body and is threaded with a nut that mates with it.

2. The clamping force locking mechanism for processing a sill plate according to claim 1, characterized in that, Both the upper and lower card slots are rectangular, with corresponding equal widths and their centers located on the same straight line. The walls of both the upper and lower card slots are provided with protective pads.

3. The clamping force locking mechanism for processing a sill plate according to claim 1, characterized in that, The diameters of the upper guide hole and the lower guide hole are respectively equal to the diameters of the upper locking rod and the lower locking rod, and each of the upper locking rods and the lower locking rod passes through the corresponding upper guide hole and the lower guide hole.

4. The clamping force locking mechanism for processing a sill plate according to claim 1, characterized in that, The two lead screws have opposite external thread directions, and their ends are rotatably connected to two fixed plates via bearings. The slider is rectangular, and its width is equal to the width of the slide groove. The walls of the transmission holes on the two sliders are respectively provided with internal threads that mate with the two lead screws. The diameter of the transmission hole is equal to the diameter of the lead screw. The two lead screws pass through the transmission holes on the two sliders respectively.

5. The clamping force locking mechanism for processing a door sill plate according to claim 1, characterized in that, The top surface of the processing table is provided with a pair of guide grooves. The guide grooves are rectangular and symmetrically distributed on the front and rear sides of the slide. The bottom of the base is fixedly connected with a pair of guide blocks. The guide blocks are symmetrically distributed on the front and rear sides of the slider. Their width and height are equal to the width and depth of the guide groove, respectively, and each guide block is located in its corresponding guide groove.

6. The clamping force locking mechanism for processing a sill plate according to claim 1, characterized in that, A pair of reinforcing blocks are fixedly connected to the top sidewalls on both sides of the base. The reinforcing blocks are triangular in shape, with their tops fixedly connected to the bottom of the clamping frame, and the two reinforcing blocks are symmetrically distributed on the front and rear sides of the lower guide hole.

7. The clamping force locking mechanism for processing a sill plate according to claim 1, characterized in that, The recycling trough is rectangular, with a width greater than the width of the chute, and a length greater than the maximum distance between the two chutes.

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