Multi-cylinder cooperative fixture for small plate assembly

Abstract

The utility model discloses a kind of multi-cylinder collaborative fixtures for small plate assembly, including support seat, bearing seat, bearing seat top end is used to place to be processed foot pedal pipe, foot pedal pipe is preassembled with pedal, support seat side fixed lifting cylinder, its top output end is connected with bearing plate through linkage rod, bearing plate bottom end fixed down pressure cylinder, down pressure cylinder bottom output end connects fixed plate, angle adjusting mechanism is equipped in fixed plate bottom end, pass through the transmission connection with pressing plate of this mechanism, angle adjusting mechanism can adjust the inclination angle of pressing plate, make pressing plate adapt pedal surface profile and press tightly, this fixture can efficiently adapt the assembly, welding etc. Process of foot pedal pipe and pedal, realize fixture height adjustment and preliminary press tightly by lifting cylinder and down pressure cylinder cooperation, adapt different specifications workpieces, without frequently replacing fixture assembly, angle adjusting mechanism can accurately adjust the angle of pressing plate, ensure that pressing plate and pedal surface profile are attached.

Description

Technical Field

[0001] This utility model relates to the field of tooling and fixture technology, and in particular to a multi-cylinder collaborative fixture for assembling small plates. Background Technology

[0002] In the assembly and welding processes of foot pedal tubes and pedals, the foot pedal tube, as the mounting carrier for the pedal, must be precisely fixed to the pedal before subsequent operations can proceed. Currently used traditional fixtures have two major problems: first, poor adaptability, as they are mostly fixed structures that can only accommodate a single specification of foot pedal tube and pedal. Changing workpiece specifications requires frequent replacement of fixture components, affecting process efficiency; second, insufficient positioning stability, often relying on manual clamping, which is prone to misalignment and insecure clamping due to uneven force, affecting assembly and welding accuracy and potentially causing scratches on components, making it difficult to meet the needs of mass production.

[0003] Therefore, those skilled in the art have provided a multi-cylinder collaborative fixture for small plate assembly to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a multi-cylinder collaborative fixture for assembling small plates.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A multi-cylinder collaborative fixture for assembling small plates includes a support base and a bearing base. The top of the bearing base is used to place the foot pedal tube to be processed, and the foot pedal tube is pre-assembled with a pedal. A lifting cylinder is fixedly installed on the side of the support base. The top output end of the lifting cylinder is connected to the bearing plate through a linkage rod. A pressing cylinder is fixedly connected to the bottom end of the bearing plate. The bottom output end of the pressing cylinder is fixedly connected to a fixed plate. The bottom end of the fixed plate is provided with an angle adjustment mechanism, which is connected to a pressure plate through the angle adjustment mechanism. The angle adjustment mechanism can adjust the tilt angle of the pressure plate so that the pressure plate adapts to the surface contour of the pedal and presses it tightly.

[0007] Preferably, the angle adjustment mechanism includes:

[0008] Fixing bases: Two in total, symmetrically fixed on both sides of the bottom end of the fixing plate;

[0009] Rotating shaft: Rotatably mounted between two fixed seats;

[0010] L-shaped plate: fixed to the front side of the fixed plate, with one end of the horizontal section of the L-shaped plate fixedly connected to the fixed plate;

[0011] Adjusting cylinder: It is fixedly installed on the front side of the vertical section of the L-shaped plate. The output end of the adjusting cylinder passes through the vertical section of the L-shaped plate and is connected to the straight rack.

[0012] First gear: Fixedly sleeved in the middle of the rotating shaft, the first gear meshes with the spur rack;

[0013] The second gear is fixedly sleeved on the shaft and located on one side of the first gear, rotating synchronously with the shaft.

[0014] Auxiliary wheels: There are two, both of which are fitted onto the rotating shaft;

[0015] The swing arm assembly includes a symmetrical left swing arm and a right swing arm, the bottom ends of which are fixedly connected to the top of the pressure plate. An arc-shaped rack is fixedly connected to the side of the left swing arm, and the arc-shaped rack meshes with a second gear. The left swing arm and the right swing arm respectively contact and engage with two auxiliary wheels.

[0016] Positioning shaft: It is fixedly installed on the inner side of one of the fixed seats, and one end of it is rotatably connected to the middle of the top end of the right swing arm side.

[0017] Preferably, both the left and right swing arms have arc-shaped guide grooves on their sides, and the left and right swing arms are respectively covered by their arc-shaped guide grooves on the outside of the corresponding auxiliary wheels, and the inner wall of the arc-shaped guide grooves makes rolling contact with the outer side of the auxiliary wheels.

[0018] Preferably, the output end of the adjusting cylinder is fixedly connected to the movable plate, and the straight rack is fixed to the middle of the bottom end of the movable plate;

[0019] The bottom two sides of the fixed plate are fixedly installed with slide rails extending in the horizontal direction, and the top two sides of the movable plate are fixedly connected with slide blocks adapted to the slide rails. The two slide blocks are slidably connected to the two slide rails respectively.

[0020] Preferably, a first finger cylinder is fixedly installed at the top center of the pressure plate, and two symmetrically arranged first hooks are installed at the two output ends of the first finger cylinder. The first finger cylinder can drive the two first hooks to move in opposite directions along the same straight line.

[0021] The top of the pressure plate is provided with a first through hole that is adapted to the first hook. The bottom end of the first hook can pass through the first through hole and hook into the pre-set adaptation hole at the top of the pedal.

[0022] Preferably, mounting plates are symmetrically fixedly installed on both sides of the top of the pressure plate, and a second finger cylinder is fixedly installed on the side of the mounting plate along the vertical direction. The two output ends of the second finger cylinder are respectively equipped with symmetrically arranged second hooks, and the second finger cylinder can drive the two second hooks to move in opposite directions along the horizontal direction.

[0023] The top of the pressure plate is provided with a second through hole that is adapted to the second hook. The bottom end of the second hook can pass through the second through hole and hook into the pre-set adaptation hole at the top of the pedal.

[0024] Compared with the prior art, the beneficial effects of this utility model are:

[0025] The fixture structure designed in this utility model can efficiently adapt to the assembly and welding requirements of foot pedal tubes and pedals. The lifting cylinder and the pressing cylinder work together to adjust the height of the fixture and achieve initial clamping. It can adapt to different specifications of foot pedal tubes and pedals without frequent replacement of fixture components. The angle adjustment mechanism can accurately adjust the tilt angle of the pressure plate by means of the adjustment cylinder, gear rack and pinion and the swing arm, to ensure that the pressure plate fits the surface contour of the pedal. With the constraint of the auxiliary wheel and the arc guide groove, the pressure plate is prevented from shifting. Then, the hook driven by the two-finger cylinder hooks and positions from multiple directions, which effectively prevents the pedal and foot pedal tube from being misaligned or not clamped firmly, reduces the intensity of manual operation and the risk of scratching parts, and improves the assembly and welding accuracy and mass production efficiency. Attached Figure Description

[0026] To illustrate the technical solutions in the embodiments of the present invention or the prior art more specifically and intuitively, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0027] Figure 1 This is a schematic diagram of the multi-cylinder collaborative clamp structure proposed in this utility model;

[0028] Figure 2 This is a schematic diagram of the support plate installation structure proposed in this utility model;

[0029] Figure 3 This is a schematic diagram of the pressure plate installation structure proposed in this utility model;

[0030] Figure 4 This is a schematic diagram of the installation structure of the angle adjustment structure proposed in this utility model;

[0031] Figure 5 This is a schematic diagram of the straight rack mounting structure proposed in this utility model;

[0032] Figure 6 This is a schematic diagram of the pedal installation structure proposed in this utility model;

[0033] Figure 7 This is a schematic diagram of the first hook installation structure proposed in this utility model.

[0034] In the diagram: 1. Support base; 2. Bearing base; 3. Foot pedal tube; 4. Pedal; 5. Lifting cylinder; 6. Linkage rod; 7. Bearing plate; 8. Pressing cylinder; 9. Fixing plate; 10. Pressure plate; 11. Fixing base; 12. Rotating shaft; 13. L-shaped plate; 14. Adjusting cylinder; 15. Straight rack; 16. First gear; 17. Second gear; 18. Left swing arm; 19. Right swing arm; 20. Auxiliary wheel; 21. Positioning shaft; 22. Arc rack; 23. Movable plate; 24. Slide seat; 25. First finger cylinder; 26. First hook; 27. Mounting plate; 28. Second finger cylinder; 29. ​​Second hook. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0036] Reference Figure 1-7 A multi-cylinder collaborative fixture for assembling small plates includes a support base 1 and a bearing base 2. The top of the bearing base 2 is used to place the foot pedal tube 3 to be processed, and the foot pedal tube 3 is pre-assembled with a pedal 4. A lifting cylinder 5 is fixedly installed on the side of the support base 1. The top output end of the lifting cylinder 5 is connected to the bearing plate 7 through a connecting rod 6. A pressing cylinder 8 is fixedly connected to the bottom end of the bearing plate 7. The bottom output end of the pressing cylinder 8 is fixedly connected to a fixed plate 9. The bottom end of the fixed plate 9 is provided with an angle adjustment mechanism, and is connected to a pressure plate 10 through the angle adjustment mechanism. The angle adjustment mechanism can adjust the tilt angle of the pressure plate 10 so that the pressure plate 10 adapts to the surface contour of the pedal 4 and presses it tightly.

[0037] Using the above technical solution, the bearing seat 2 provides a stable placement reference for the foot tube 3 to be processed and the pre-assembled pedal 4, avoiding workpiece displacement; the lifting cylinder 5 can flexibly adjust the position of the bearing plate 7 according to the workpiece height to adapt to different specifications of workpieces; the pressing cylinder 8 can stably drive the fixing plate 9, the angle adjustment mechanism and the pressure plate 10 to approach the workpiece, realize automatic clamping, reduce manual labor intensity and ensure uniform clamping force; the angle adjustment mechanism can adjust the tilt angle of the pressure plate 10 according to the surface contour of the pedal 4 to ensure that the pressure plate and the pedal are fully in contact, realize accurate positioning and reliable clamping of the workpiece, and lay the foundation for subsequent assembly processes.

[0038] The angle adjustment mechanism includes:

[0039] Fixing base 11: There are two in total, which are symmetrically fixed on both sides of the bottom end of the fixing plate 9;

[0040] Rotating shaft 12: Rotatably mounted between two fixed seats 11;

[0041] L-shaped plate 13: fixed to the front side of the fixing plate 9, with one end of the horizontal section of the L-shaped plate 13 fixedly connected to the fixing plate 9;

[0042] Adjusting cylinder 14: It is fixedly installed on the front side of the vertical section of the L-shaped plate 13. The output end of the adjusting cylinder 14 passes through the vertical section of the L-shaped plate 13 and is connected to the straight rack 15.

[0043] First gear 16: Fixedly sleeved in the middle of rotating shaft 12, first gear 16 meshes with spur rack 15;

[0044] The second gear 17 is fixedly sleeved on the rotating shaft 12 and located on one side of the first gear 16, rotating synchronously with the rotating shaft 12;

[0045] Auxiliary wheels 20: Two are provided, both of which are sleeved on the rotating shaft 12;

[0046] The swing arm assembly includes a left swing arm 18 and a right swing arm 19 with symmetrical structure. The bottom ends of both are fixedly connected to the top of the pressure plate 10. An arc-shaped rack 22 is fixedly connected to the side of the left swing arm 18. The arc-shaped rack 22 meshes with the second gear 17. The left swing arm 18 and the right swing arm 19 respectively contact and cooperate with two auxiliary wheels 20.

[0047] Positioning shaft 21: It is fixedly installed on the inner side of one of the fixed seats 11, and one end of it is rotatably connected to the middle of the top end of the side of the right swing arm 19.

[0048] Using the above technical solution, two symmetrical fixed seats 11 provide stable support for the rotating shaft 12, which can synchronously transmit power to each component; the L-shaped plate 13 provides a stable mounting reference for the adjusting cylinder 14, ensuring that the cylinder output end drives the rack 15 horizontally and avoids deviation of the power direction; the first gear 16 meshes with the rack 15, converting linear motion into rotating motion of the shaft, and in conjunction with the second gear 17 meshing with the arc rack 22 of the left swing arm 18, the swing arm can swing precisely, and the angle of the pressure plate 10 can be quantitatively adjusted by controlling the cylinder stroke; the auxiliary wheel 20 restricts the radial displacement of the swing arm, and the positioning shaft 21 provides a fixed swing fulcrum for the right swing arm 19. The two work together to make the left and right swing arms swing synchronously, ensuring that the pressure plate is subjected to balanced force at both ends, improving the symmetry and stability of the angle adjustment, and ensuring that the angle of the pressure plate is precise and controllable.

[0049] Both the left swing arm 18 and the right swing arm 19 have arc-shaped guide grooves on their sides. The left swing arm 18 and the right swing arm 19 are respectively covered by their own arc-shaped guide grooves on the outside of the corresponding auxiliary wheel 20, and the inner wall of the arc-shaped guide groove is in rolling contact with the outer side of the auxiliary wheel 20.

[0050] Using the above technical solution, the left swing arm 18 and the right swing arm 19 are covered by the arc-shaped guide groove and roll to contact the auxiliary wheel 20. Compared with simple side contact, the swing arm motion constraint is upgraded to full circumferential contact, which effectively avoids the swing arm tilting or deflection due to uneven force, and further improves the angle adjustment accuracy of the pressure plate 10. The angle adjustment error can be controlled within a small range.

[0051] The output end of the regulating cylinder 14 is fixedly connected to the movable plate 23, and the straight rack 15 is fixed to the middle of the bottom end of the movable plate 23;

[0052] The bottom two sides of the fixed plate 9 are fixedly installed with slide rails extending in the horizontal direction, and the top two sides of the movable plate 23 are fixedly connected with slide blocks adapted to the slide rails. The two slide blocks 24 are slidably connected to the two slide rails respectively.

[0053] The above technical solution is adopted. The movable plate 23, slide rail and slide seat 24 are set to form a sliding guide pair, which strictly restricts the straight rack 15 to move only in a straight line in the horizontal direction, avoids the straight rack moving up and down or left and right when it moves, and ensures that the straight rack 15 and the tooth surface of the first gear 16 are always fully meshed.

[0054] A first finger cylinder 25 is fixedly installed at the top center of the pressure plate 10. The two output ends of the first finger cylinder 25 are respectively equipped with symmetrically arranged first hooks 26. The first finger cylinder 25 can drive the two first hooks 26 to move in opposite directions along the same straight line.

[0055] The top of the pressure plate 10 is provided with a first through hole that is adapted to the first hook 26. The bottom end of the first hook 26 can pass through the first through hole and hook into the pre-set adaptation hole at the top of the pedal 4.

[0056] Using the above technical solution, the designed first finger cylinder 25 and first hook 26 cooperate to drive the two first hooks to move in opposite directions along the same straight line. The position of the hooks can be flexibly adjusted according to the spacing of the adapter holes of the pedal 4 to achieve adaptive hooking. The first through hole provides movement space for the first hooks to ensure that the hooks accurately hook into the pedal adapter holes.

[0057] The top two sides of the pressure plate 10 are symmetrically fixedly mounted with mounting plates 27. The sides of the mounting plates 27 are fixedly mounted with second finger cylinders 28 in the vertical direction. The two output ends of the second finger cylinders 28 are respectively equipped with symmetrically arranged second hooks 29. The second finger cylinders 28 can drive the two second hooks 29 to move in opposite directions in the horizontal direction.

[0058] The top of the pressure plate 10 is provided with a second through hole that is adapted to the second hook 29. The bottom end of the second hook 29 can pass through the second through hole and hook into the pre-set adaptation hole at the top of the pedal 4.

[0059] Using the above technical solution, the second hook can pass through the second through hole on the pressure plate 10 and hook into the pre-set adapter hole at the top of the pedal 4. Based on the positioning of the pedal by the first hook 26, a reliable constraint is further formed on the pedal from the lateral direction, effectively limiting the horizontal displacement of the pedal that may occur during the assembly process.

[0060] Working principle:

[0061] When the multi-cylinder collaborative fixture for assembling the small plate is working, the foot tube 3 to be processed, pre-assembled with the pedal 4, is first placed on the support seat 2 for positioning; the lifting cylinder 5 on the support seat 1 drives the support plate 7 to rise and fall to the appropriate height through the linkage rod 6, and then the pressing cylinder 8 under the support plate 7 pushes the fixing plate 9, the angle adjustment mechanism and the pressure plate 10 closer to the pedal 4; in the angle adjustment mechanism, the adjusting cylinder 14 drives the rack 15 to move, and through meshing with the first gear 16, drives the rotating shaft 12 to rotate, and the rotating shaft 12 synchronously drives the second gear 17 and the auxiliary wheel 20 to rotate. The second gear 17 drives the left swing arm 18 to swing through the arc rack 22, and the right swing arm 19 swings synchronously with the positioning shaft 21 as the fulcrum. The arc guide groove and the auxiliary wheel 20 make rolling contact to adjust the angle of the pressure plate 10 to match the contour of the pedal 4. At the same time, the movable plate 23 slides along the slide rail through the slide seat 24 to ensure the precise movement of the straight rack 15. Finally, the first finger cylinder 25 drives the first hook 26 and the second finger cylinder 28 drives the second hook 29 to pass through the corresponding through hole and hook into the matching hole of the pedal 4, so as to achieve stable positioning and pressing of the pedal 4 and the foot tube 3.

[0062] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A multi-cylinder collaborative fixture for assembling small plates, comprising a support base (1) and a bearing base (2), characterized in that, The top of the support seat (2) is used to place the foot tube (3) to be processed, and the foot tube (3) is pre-assembled with a pedal (4). The side of the support seat (1) is fixedly installed with a lifting cylinder (5). The top output end of the lifting cylinder (5) is connected to the support plate (7) through a connecting rod (6). The bottom end of the support plate (7) is fixedly connected with a pressing cylinder (8). The bottom output end of the pressing cylinder (8) is fixedly connected to a fixed plate (9). The bottom end of the fixed plate (9) is provided with an angle adjustment mechanism, and is connected to the pressure plate (10) through the angle adjustment mechanism. The angle adjustment mechanism can adjust the tilt angle of the pressure plate (10) so that the pressure plate (10) fits the surface contour of the pedal (4) and presses it tightly.

2. The multi-cylinder collaborative fixture for assembling small plates according to claim 1, characterized in that, The angle adjustment mechanism includes: Fixing base (11): There are two in total, which are symmetrically fixed on both sides of the bottom end of the fixing plate (9); Rotating shaft (12): Rotatably mounted between two fixed seats (11); L-shaped plate (13): fixed to the front side of the fixed plate (9), one end of the horizontal section of the L-shaped plate (13) is fixedly connected to the fixed plate (9); Adjusting cylinder (14): It is fixedly installed on the front side of the vertical section of the L-shaped plate (13). The output end of the adjusting cylinder (14) passes through the vertical section of the L-shaped plate (13) and is connected to the straight rack (15). First gear (16): Fixedly sleeved in the middle of the rotating shaft (12), the first gear (16) meshes with the spur rack (15); The second gear (17) is fixedly sleeved on the rotating shaft (12) and located on one side of the first gear (16), rotating synchronously with the rotating shaft (12); Auxiliary wheels (20): Two are provided, both of which are sleeved on the rotating shaft (12); The swing arm assembly includes a left swing arm (18) and a right swing arm (19) with symmetrical structure. The bottom ends of both are fixedly connected to the top of the pressure plate (10). An arc-shaped rack (22) is fixedly connected to the side of the left swing arm (18). The arc-shaped rack (22) meshes with the second gear (17). The left swing arm (18) and the right swing arm (19) respectively contact and cooperate with two auxiliary wheels (20). Positioning shaft (21): It is fixedly installed on the inner side of one of the fixed seats (11), and one end of it is rotatably connected to the middle of the top of the side of the right swing arm (19).

3. The multi-cylinder collaborative fixture for assembling small plates according to claim 2, characterized in that, The left swing arm (18) and the right swing arm (19) are provided with arc-shaped guide grooves on their sides. The left swing arm (18) and the right swing arm (19) are respectively covered by their own arc-shaped guide grooves on the outside of the corresponding auxiliary wheel (20), and the inner wall of the arc-shaped guide groove is in rolling contact with the outer side of the auxiliary wheel (20).

4. A multi-cylinder collaborative fixture for assembling small plates according to claim 2, characterized in that, The output end of the regulating cylinder (14) is fixedly connected to the movable plate (23), and the straight rack (15) is fixed at the bottom center of the movable plate (23); The bottom two sides of the fixed plate (9) are fixedly installed with slide rails extending in the horizontal direction, and the top two sides of the movable plate (23) are fixedly connected with slide blocks (24) adapted to the slide rails. The two slide blocks (24) are slidably connected to the two slide rails respectively.

5. A multi-cylinder collaborative fixture for assembling small plates according to claim 1, characterized in that, A first finger cylinder (25) is fixedly installed at the top center of the pressure plate (10). The two output ends of the first finger cylinder (25) are respectively equipped with symmetrically arranged first hooks (26). The first finger cylinder (25) can drive the two first hooks (26) to move in opposite directions along the same straight line. The top of the pressure plate (10) is provided with a first through hole that is adapted to the first hook (26). The bottom end of the first hook (26) can pass through the first through hole and hook into the pre-set adaptation hole at the top of the pedal (4).

6. The multi-cylinder collaborative fixture for assembling small plates according to claim 1, characterized in that, Mounting plates (27) are symmetrically fixed on both sides of the top of the pressure plate (10). A second finger cylinder (28) is fixedly mounted on the side of the mounting plate (27) in the vertical direction. A second hook (29) is symmetrically installed on the two output ends of the second finger cylinder (28). The second finger cylinder (28) can drive the two second hooks (29) to move in opposite directions in the horizontal direction. The top of the pressure plate (10) is provided with a second through hole that is adapted to the second hook (29). The bottom end of the second hook (29) can pass through the second through hole and hook into the pre-set adaptation hole at the top of the pedal (4).

Images