A positioning device for a hair cover assembly riveter

Abstract

The utility model relates to a kind of positioning device of hair cover assembly spin riveter, including rack, the surface of rack is fixedly equipped with positioning column, the surface of rack is fixedly equipped with two mounting seats, cylinder is fixedly equipped on the side wall of mounting seat, the output end of cylinder is fixedly equipped with clamping arm, first protective pad is sleeved on the side wall of clamping arm close to positioning column, the top end of mounting seat is rotatably connected with limit plate, the surface of limit plate close to positioning column is equipped with limit bolt, the bottom end of limit plate is sleeved with second protective pad, the top end of rack is provided with spin riveting assembly, spin riveting assembly includes the hydraulic cylinder fixed in the top end of rack.The utility model can drive clamping arm to move towards each other by starting cylinder to clamp workpiece to reduce workpiece lateral displacement, then support limit plate is rotated to the top end of workpiece to reduce workpiece vertical displacement, first protective pad and second protective pad cooperate to prevent slipping while reducing workpiece vibration, to improve the stability and quality of workpiece processing.

Description

Technical Field

[0001] This utility model relates to the field of automotive processing equipment, specifically a positioning device for a hood assembly riveting machine. Background Technology

[0002] The engine hood assembly riveting machine is an automated device that uses rotational extrusion to rivet and fasten automotive engine hood components. It is widely used in the assembly of automotive parts and assemblies, and is especially suitable for riveting processes of multiple components such as engine hoods and chassis brackets. The core principle of the engine hood assembly riveting machine is to use the combined action of rotational force and axial pressure to cause plastic deformation of the rivet, forming a strong connection point. Compared with traditional stamping riveting, it has the advantages of uniform stress distribution and less workpiece damage.

[0003] The assembly riveting machine mainly consists of four parts: the power system, which usually uses a servo motor or hydraulic motor to provide adjustable rotational power and axial feed force, and precisely controls the speed and pressure through a reduction mechanism; the actuator includes the riveting head, which is mostly conical or spherical in structure to ensure the rivet deformation fit; the positioning system is a key component, such as a pneumatic clamp; the control system is based on PLC programming and integrates a touch screen operation interface to monitor torque and displacement data in real time, ensuring riveting consistency. During operation, the assembly to be riveted is fixed by the positioning system, and the riveting head approaches the rivet under the drive of the power system. It first applies a set pressure to press axially, and at the same time, high-speed rotation gradually upsetting the rivet head, shaping it along the mold cavity, and finally forming a tight fit with the workpiece surface.

[0004] The positioning device of the existing hairnet assembly riveting machine has a tilted riveting head. When the riveting head rotates at high speed and applies pressure, it may cause the workpiece to vibrate eccentrically, which will affect the stability and quality of the workpiece processing. Utility Model Content

[0005] The technical problem to be solved by this utility model is that the positioning device of the existing hairnet assembly riveting machine may cause the workpiece to vibrate eccentrically when the riveting head is tilted and applied pressure at high speed, which affects the stability and quality of the workpiece processing.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A positioning device for a hairnet assembly riveting machine includes a frame, a positioning post fixed on the surface of the frame, two mounting seats fixed on the surface of the frame, a cylinder fixed on the side wall of each mounting seat, a clamping arm fixed on the output end of each cylinder, a first protective pad sleeved on the side wall of each clamping arm near the positioning post, a limit plate rotatably connected to the top of the mounting seat, a limit bolt opened on the surface of the limit plate near the positioning post, a second protective pad sleeved on the bottom end of the limit plate, and a riveting assembly provided at the top of the frame, the riveting assembly including a hydraulic cylinder fixed at the top of the frame.

[0007] The beneficial effects of this utility model are: by starting the cylinder, the clamping arms can move towards each other to clamp the workpiece, thereby reducing the lateral displacement of the workpiece; by rotating the limiting plate, the top of the workpiece is supported and limited to reduce the vertical displacement of the workpiece; the first and second protective pads work together to prevent slipping while reducing the vibration of the workpiece itself, thereby improving the stability and quality of workpiece processing.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, the two clamping arms are symmetrically distributed on both sides of the positioning post, and the surface of the first protective pad is provided with several first anti-slip grooves.

[0010] Furthermore, the surface of the second pad is provided with several second anti-slip grooves, which pass through the limiting plate and the second pad in sequence.

[0011] Furthermore, a connecting seat is fixedly provided at the output end of the bottom of the hydraulic cylinder, a servo motor is fixedly provided at the bottom end of the connecting seat, and a riveting head is fixedly provided at the output end of the servo motor.

[0012] Furthermore, a limit bolt is inserted into the surface of the limit plate, and a threaded groove is provided on the surface of the mounting base for threaded connection to the slot.

[0013] Furthermore, a slot is provided on the surface of the limiting plate near the threaded groove, the limiting bolt is inserted into the middle of the limiting plate, and a knob is fixed on the top of the limiting bolt.

[0014] Furthermore, a support rod is rotatably connected to the bottom end of the limiting plate, and a slot is opened at the top of the mounting base, with the other end of the support rod being engaged in the middle of the slot.

[0015] Furthermore, a groove is provided at the bottom of the limiting plate, and the external dimensions of the support rod are adapted to the internal dimensions of the groove.

[0016] The beneficial effects of adopting the above-mentioned further solution are: the stability of the top support of the limiting plate is further improved by the cooperation of the limiting bolt, slot and threaded groove; by setting the support rod, slot and groove, the rotation of the limiting plate can be restricted by supporting the support rod in the slot, thereby facilitating the installation and positioning of the workpiece. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the clamping arm structure of this utility model; Figure 4 This is a schematic diagram of the mounting base structure of this utility model; Figure 5 This is a schematic diagram of the limiting plate structure of this utility model; The attached diagram lists the components represented by each number as follows: 1. Frame; 2. Positioning post; 3. Mounting base; 4. Cylinder; 5. Clamping arm; 6. Riveting assembly; 601. Hydraulic cylinder; 602. Connecting seat; 603. Servo motor; 604. Riveting head; 7. Limiting plate; 8. Through groove; 9. Limiting bolt; 10. First protective pad; 11. First anti-slip groove; 12. Slot; 13. Threaded groove; 14. Second protective pad; 15. Support rod; 16. Slot; 17. Second anti-slip groove; 18. Groove. Detailed Implementation

[0018] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0019] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In the description of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0020] like Figure 1-5As shown, a positioning device for a hairnet assembly riveting machine includes a frame 1. Positioning posts 2 are fixed to the surface of the frame 1 for workpiece insertion and positioning. Two mounting seats 3 are fixed to the surface of the frame 1. Cylinders 4 are fixed to the side walls of each mounting seat 3. Clamping arms 5 are fixed to the output ends of each cylinder 4. First protective pads 10 are fitted onto the side walls of each clamping arm 5 near the positioning posts 2. The two clamping arms 5 are symmetrically distributed on both sides of the positioning posts 2. Several first anti-slip grooves 11 are formed on the surface of each first protective pad 10. Activating the cylinders 4 can drive the clamping arms 5 to move towards each other, thereby clamping the workpiece and reducing the risk of slippage. The top of the mounting base 3 is rotatably connected to the limiting plate 7 via a torsion spring. Rotating the limiting plate 7 further supports and limits the top of the workpiece, reducing vertical displacement. A limiting bolt 9 is provided on the surface of the limiting plate 7 near the positioning post 2. A second protective pad 14 is fitted onto the bottom of the limiting plate 7. Several second anti-slip grooves 17 are provided on the surface of the second protective pad 14. Both the second protective pad 14 and the first protective pad 10 are made of silicone. The second protective pad 14 and the first protective pad 10 are key buffer components that come into contact with the workpiece. Their softness protects the workpiece from hard metal clamps. Scratches and indentations caused by direct contact are prevented. Secondly, the first anti-slip groove 11 and the second anti-slip groove 17 enhance the friction between the first protective pad 10 and the second protective pad 14, thereby increasing the clamping friction and preventing the workpiece from sliding during processing or handling, thus improving positioning stability. Finally, the first protective pad 10 and the second protective pad 14 seal and buffer, filling gaps in the contact surface while absorbing vibration and impact, reducing the impact of vibration during processing, thereby ensuring operational accuracy. The through groove 8 passes through the limiting plate 7 and the second protective pad 14 in sequence, facilitating workpiece processing. A riveting assembly 6 is provided at the top of the frame 1. The riveting assembly 6 includes components fixed to the machine... A hydraulic cylinder 601 is located at the top of the frame 1. A connecting seat 602 is fixedly installed at the output end of the hydraulic cylinder 601. A servo motor 603 is fixedly installed at the bottom end of the connecting seat 602. A riveting head 604 is fixedly installed at the output end of the servo motor 603. Starting the hydraulic cylinder 601 can adjust the height of the riveting head 604. Starting the servo motor 603 can rotate the riveting head 604. By utilizing the combined action of the rotational force and axial pressure of the riveting head 604, the workpiece rivet undergoes plastic deformation to form a firm connection point, thereby improving the accuracy and stability of the installation and positioning of the riveting workpiece, and thus improving the processing quality.

[0021] like Figure 1-4 As shown, a limit bolt 9 is inserted into the surface of the limit plate 7 to support and limit the movement. The surface of the mounting base 3 is provided with a threaded groove 13 for threaded connection of the slot 12. The surface of the limit plate 7 near the threaded groove 13 is provided with a slot 12. The limit bolt 9 is inserted in the middle of the limit plate 7 to limit the rotation of the limit plate 7. A knob is fixed at the top of the limit bolt 9. The combination of the limit bolt 9, the slot 12 and the threaded groove 13 further improves the stability of the top support of the limit plate 7.

[0022] like Figure 4-5As shown, a support rod 15 is rotatably connected to the bottom end of the limiting plate 7, and a slot 16 is provided at the top end of the mounting base 3. The other end of the support rod 15 is engaged in the middle of the slot 16. A groove 18 is provided at the bottom end of the limiting plate 7. The external dimensions of the support rod 15 are adapted to the internal dimensions of the groove 18. By providing the support rod 15, the slot 16, and the groove 18, the support rod 15 is supported inside the slot 16, which can restrict the rotation of the limiting plate 7, thereby facilitating the installation and positioning of the workpiece.

[0023] Working principle: When using the positioning device of the hairnet assembly riveting machine, the operator first connects the external power supply, then places the workpiece to be processed on the outer surface of the positioning post 2, and then starts the two cylinders 4 to push the clamping arms 5 to move towards each other, so that the two clamping arms 5 are clamped on the side wall of the riveting assembly 6 to achieve initial fixation to limit the lateral displacement of the workpiece. Then, the limiting plate 7 is rotated to press the limiting plate 7 on the top of the workpiece to limit the vertical displacement of the workpiece. The first protective pad 10 and the second protective pad 14 cooperate to avoid scratches and indentations caused by direct contact of hard metal clamps. The first anti-slip groove 11 and the second anti-slip groove 17 further enhance the frictional resistance of the surfaces of the first protective pad 10 and the second protective pad 14, thereby improving the firmness of the workpiece clamping, while absorbing vibration and shock to reduce the vibration during processing and ensure the accuracy of operation.

[0024] Next, the limiting bolt 9 is inserted into the middle of the slot 12 and then threaded into the inside of the threaded groove 13, thereby further improving the stability of the limiting plate 7 supported on the top of the workpiece.

[0025] When the workpiece limiting plate 7 forms a barrier, the operator can rotate the support rod 15 so that the bottom end of the support rod 15 is engaged in the middle of the slot 16, thereby supporting the limiting plate 7 and restricting the free rotation of the limiting plate 7, thus facilitating the installation of the workpiece. When the workpiece is installed, rotate the support rod 15 to engage in the middle of the groove 18, thus facilitating the storage of the support rod 15.

[0026] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A positioning device for a hairnet assembly riveting machine, characterized in that: The frame (1) includes a positioning post (2) fixed on its surface and two mounting seats (3) fixed on its surface. Each mounting seat (3) has a cylinder (4) fixed on its side wall and a clamping arm (5) fixed on its output end. Each clamping arm (5) has a first protective pad (10) fitted on its side wall near the positioning post (2). The top of the mounting seat (3) is rotatably connected to a limit plate (7). The limit plate (7) has a limit bolt (9) on its surface near the positioning post (2). The bottom of the limit plate (7) is fitted with a second protective pad (14). The top of the frame (1) is provided with a riveting assembly (6). The riveting assembly (6) includes a hydraulic cylinder (601) fixed on the top of the frame (1).

2. The positioning device for a hairnet assembly riveting machine according to claim 1, characterized in that, The two clamping arms (5) are symmetrically distributed on both sides of the positioning post (2), and the surface of the first pad (10) is provided with several first anti-slip grooves (11).

3. The positioning device for a hairnet assembly riveting machine according to claim 1, characterized in that, The surface of the second pad (14) is provided with several second anti-slip grooves (17), and the through grooves (8) pass through the limiting plate (7) and the second pad (14) in sequence.

4. The positioning device for a hairnet assembly riveting machine according to claim 1, characterized in that, A connecting seat (602) is fixedly provided at the output end of the bottom of the hydraulic cylinder (601), a servo motor (603) is fixedly provided at the bottom end of the connecting seat (602), and a riveting head (604) is fixedly provided at the output end of the servo motor (603).

5. The positioning device for a hairnet assembly riveting machine according to claim 1, characterized in that, Limiting bolts (9) are inserted into the surface of the limiting plate (7), and threaded grooves (13) are provided on the surface of the mounting base (3) for threaded connection of the slot (12).

6. The positioning device for a hairnet assembly riveting machine according to claim 1, characterized in that, The limiting plate (7) has a slot (12) on its surface near the threaded groove (13), and the limiting bolt (9) is inserted into the middle of the limiting plate (7). A knob is fixed on the top of the limiting bolt (9).

7. The positioning device for a hairnet assembly riveting machine according to claim 1, characterized in that, The bottom end of the limiting plate (7) is rotatably connected to a support rod (15), and the top end of the mounting base (3) is provided with a slot (16), and the other end of the support rod (15) is engaged in the middle of the slot (16).

8. The positioning device for a hairnet assembly riveting machine according to claim 7, characterized in that, The bottom end of the limiting plate (7) is provided with a groove (18), and the external dimensions of the support rod (15) are adapted to the internal dimensions of the groove (18).

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