A structural stable rear seat frame assembly jig

Abstract

The utility model relates to a kind of structural stable rear seat framework assembly fixture, belong to rear seat framework assembly fixture technical field, solve the problems of slow production rhythm, low processing efficiency, welding quality cannot be guaranteed, there is quality risk in prior art exist. Including main body frame, main body frame is provided with fixture base plate, four framework A reference compacting mechanisms are arranged in the middle part of fixture base plate, the two sides of four framework A reference compacting mechanisms in the middle part are respectively provided with framework hook, the periphery of framework hook is provided with several groups of felt detection sensor, the left and right ends of fixture base plate lower part are provided with framework installation hole detection pin;The middle part of welding device installation base is provided with middle rubber part welding device, the left and right sides of middle rubber part welding device are respectively provided with side rubber part welding device. Its design is reasonable, compact structure, can realize stable positioning and clamping, rubber piece welding accuracy is high, can automatically detect felt, improve processing efficiency, reduce quality risk.

Description

Technical Field

[0001] This utility model belongs to the technical field of rear seat frame assembly fixtures, specifically relating to a structurally stable rear seat frame assembly fixture. Background Technology

[0002] As the carrier of the rear seats, the rear seat frame needs to be fitted to the vehicle body in many places during assembly at the OEM. Furthermore, vibrations and noises are inevitable during vehicle operation. Therefore, it is necessary to attach felt to the areas of the seat frame that are in contact with the vehicle body, and to install cushioning rubber components at the hooks where the seat frame attaches to the vehicle body to eliminate noise and improve driving and riding comfort. However, the existing method of manually welding rubber components is not only slow and inefficient, but also cannot guarantee welding quality. In addition, the reliability of the felt currently attached to the seat frame can only be inspected visually, which poses a significant quality risk. Therefore, it is necessary to improve the assembly fixtures for the existing rear seat frame technology. Utility Model Content

[0003] This utility model addresses the aforementioned problems by providing a structurally stable rear seat frame assembly fixture that enables stable positioning and clamping, achieves high precision in rubber part welding, automatically detects missing felt, effectively improves processing efficiency, and reduces quality risks.

[0004] The technical solution adopted by this utility model is as follows: the structurally stable rear seat frame assembly fixture includes a main frame, characterized in that: a fixture base plate is provided on the main frame, four frame A reference clamping mechanisms are provided in the middle of the fixture base plate, and the frame A reference clamping mechanisms are arranged symmetrically in pairs, and frame hooks are provided on both sides of the four frame A reference clamping mechanisms in the middle, and several sets of felt detection sensors are provided around the frame hooks, the felt detection sensors are connected to the fixture base plate through sensor brackets, and frame mounting hole detection pins are provided at the left and right ends of the lower part of the fixture base plate; furthermore, a welding device mounting base is provided on the upper part of the fixture base plate, the welding device mounting base is fixedly connected to the main frame above the fixture base plate, a central rubber component welding device is provided in the middle of the welding device mounting base, and symmetrically arranged side rubber component welding devices are provided on the left and right sides of the central rubber component welding device.

[0005] The frame hook includes a hook connector, on which a support groove base is provided. The support groove base has a frame B reference support slot inside, and a limit pin hole is provided on the side of the support groove base. A limit pin is provided in the limit pin hole to limit the position of the frame B reference support slot. The frame hook is installed on the fixture base plate via the hook connector, and the steel wires on both sides of the seat frame to be assembled (after the felt and rubber parts are installed) are hung in the frame B reference support slots of the frame hooks on both sides.

[0006] The frame A-reference clamping mechanism includes vertically arranged A-reference support seats, with an A-reference support pad on the top of each A-reference support seat. A vertically arranged A-reference clamping cylinder is also provided on the side of the A-reference support seat. An A-reference clamping block is provided at the telescopic end of each A-reference clamping cylinder, and the clamping end of the A-reference clamping block is located directly above the A-reference support seat. After the seat frame to be assembled is installed in place, the telescopic movement of the A-reference clamping cylinders in the four frame A-reference clamping mechanisms drives the A-reference clamping blocks downwards, thereby clamping the A-reference positioning in the middle of the seat frame onto each A-reference support seat, thus completely fixing the seat frame to be assembled.

[0007] The central rubber component welding device and the side rubber component welding devices have the same structure, both including an ultrasonic welding head. The ultrasonic welding head is slidably connected to the welding head moving slide rail set on the welding head cylinder connecting frame via a welding head moving slide block. The welding head cylinder connecting frame is fixedly connected to the lower side of the welding device mounting base, and the cylinder body of the welding head telescopic cylinder is fixedly connected to the welding head cylinder connecting frame. The telescopic end of the welding head telescopic cylinder is connected to the welding head moving slide block. A rubber component welding stop block is also provided in front of the welding part at the front end of the ultrasonic welding head. The upper part of the rubber component welding stop block is connected to the telescopic end of the stop block telescopic cylinder. The cylinder body of the stop block telescopic cylinder is fixedly connected to the upper side of the welding device mounting base via the stop block cylinder connecting frame. After detecting whether the felt on the seat frame to be assembled is missing using various felt detection sensors, the extension and retraction of the stop cylinders on the central rubber component welding device and the side rubber component welding devices on both sides are used to move the corresponding rubber component welding stop blocks downward to the front of the rubber component. Then, the extension and retraction of the welding head extension cylinders on the central rubber component welding device and the side rubber component welding devices on both sides are used to move each ultrasonic welding head forward and press against the corresponding rubber component, thus forming a layout with rubber component welding stop blocks in the front, rubber components in the middle, and ultrasonic welding heads in the back, which facilitates the subsequent welding of rubber components onto the seat frame by the ultrasonic welding heads.

[0008] The structure and shape of the ultrasonic welding head front welding section of the central rubber component welding device and the side rubber component welding device correspond to the structure of the rubber components at various positions on the seat frame to be assembled. This ensures the stability of the welding of each rubber component on the seat frame and effectively improves the welding quality.

[0009] Protective light curtains are installed on both sides of the operating port at the front of the main frame. These light curtains are used to ensure the personal safety of personnel when the equipment is in operation.

[0010] Adjustable bases are installed at the four corners of the bottom of the main frame. These bases allow for height adjustment of the entire device, facilitating operation by staff of different heights.

[0011] The beneficial effects of this utility model are as follows: Because this utility model adopts a main frame with a clamping base plate, and four symmetrically arranged skeleton A reference clamping mechanisms arranged in pairs are located in the middle of the clamping base plate, skeleton hooks are located on both sides of the four skeleton A reference clamping mechanisms in the middle, and several sets of felt detection sensors are located around the skeleton hooks. Skeleton mounting hole detection pins are located at the left and right ends of the lower part of the clamping base plate. A welding device mounting base is located on the upper part of the clamping base plate, with a central rubber component welding device in the middle and side rubber component welding devices on both sides of the central rubber component welding device. Therefore, its design is reasonable and its structure is compact. The entire assembly fixture is clamped and positioned through the seat skeleton A reference surface, achieving stable positioning and clamping, and accurately performing ultrasonic welding on the rubber components assembled on the seat skeleton, resulting in high precision welding of the rubber components. Simultaneously, the felt detection sensors on the assembly fixture can automatically detect whether felt is missing, thereby reducing quality problems, effectively improving processing efficiency, and reducing quality risks. Moreover, as the final process before the seat frame leaves the factory, the assembly fixture is equipped with two frame mounting hole detection pins on the left and right to detect the mounting hole positions of the seat frame, so as to ensure that the seat can be smoothly installed in the vehicle during the assembly at the OEM. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 yes Figure 1 A schematic diagram of a connection structure for a clamp base plate and components thereon (with the seat frame to be assembled removed).

[0014] Figure 3 yes Figure 2 A schematic diagram of a skeleton hook in a design.

[0015] Figure 4 yes Figure 2A schematic diagram of a frame A reference clamping mechanism.

[0016] Figure 5 yes Figure 2 A schematic diagram of a central rubber component welding device and a side rubber component welding device.

[0017] The numbers in the diagram are explained as follows: 1. Main frame; 2. Fixture base plate; 3. Welding device mounting base; 4. Middle rubber component welding device; 5. Side rubber component welding device; 6. Frame hook; 7. Frame A reference clamping mechanism; 8. Felt detection sensor; 9. Frame mounting hole detection pin; 10. Protective light grid; 11. Adjustment base; 12. Seat frame to be assembled; 13. Hook connecting seat; 14. Support groove base; 15. Frame B reference support slot; 16. Limiting pin hole; 17. A reference support seat; 18. A reference support pad; 19. A reference clamping cylinder; 20. A reference clamping block; 21. Ultrasonic welding head; 22. Welding head moving slide; 23. Welding head moving slide rail; 24. Welding head telescopic cylinder; 25. Welding head cylinder connecting frame; 26. Rubber component welding stop block; 27. Stop block telescopic cylinder; 28. Stop block cylinder connecting frame. Detailed Implementation

[0018] according to Figures 1-5 The specific structure of this utility model is described in detail. The stable rear seat frame assembly fixture includes a main frame 1, on which a vertically and inclined fixture base plate 2 is arranged. Four frame A-reference clamping mechanisms 7, arranged symmetrically in pairs, are arranged in the middle of the fixture base plate 2. Each frame A-reference clamping mechanism 7 includes a vertically arranged A-reference support seat 17, with an A-reference support pad 18 on its top. A vertically arranged A-reference clamping cylinder 19 is also arranged on the side of the A-reference support seat 17. An A-reference clamping block 20 is provided at the telescopic end of the A-reference clamping cylinder 19, and the clamping end of the A-reference clamping block 20 is located directly above the A-reference support seat 17. Furthermore, after the seat frame 12 to be assembled is installed in place, the extension and retraction of the A reference clamping cylinders 19 of the four frame A reference clamping mechanisms 7 are used to drive the A reference clamping blocks 20 to move downward, thereby clamping the A reference positioning in the middle of the seat frame onto each A reference support seat 17, so as to completely fix the seat frame 12 to be assembled.

[0019] Four frame A reference clamping mechanisms 7 are respectively provided on both sides of the upper and middle part of the fixture base plate 2. The frame hook 6 includes a hook connecting seat 13, and a support groove base 14 is provided on the hook connecting seat 13. The support groove base 14 is provided with a frame B reference support slot 15, and the side of the support groove base 14 is also provided with a limit pin hole 16. The limit pin hole 16 is provided with a limit pin for limiting the position of the frame B reference support slot 15. Thus, the frame hook 6 is installed on the fixture base plate 2 through the hook connecting seat 13, and the steel wires on the left and right sides of the seat frame 12 to be assembled after the felt and rubber parts are installed are hung in the frame B reference support slots 15 of the frame hook 6 on both sides.

[0020] A welding device mounting base 3 is provided on the upper part of the fixture base plate 2, and the welding device mounting base 3 is fixedly connected to the main frame 1 above the fixture base plate 2. Furthermore, a central rubber component welding device 4 is provided in the middle of the welding device mounting base 3, and symmetrically arranged side rubber component welding devices 5 are provided on the left and right sides of the central rubber component welding device 4. In addition, the structure and shape of the welding portion at the front end of the ultrasonic welding head 21 of the central rubber component welding device 4 and the side rubber component welding devices 5 correspond to the structure of the rubber components at various positions on the seat frame 12 to be assembled; this ensures the stability of the welding of each rubber component on the seat frame and effectively improves the welding quality.

[0021] Meanwhile, the central rubber component welding device 4 and the side rubber component welding devices 5 have the same structure, both including an ultrasonic welding head 21. The ultrasonic welding head 21 is slidably connected to the welding head moving slide rail 23 provided on the welding head cylinder connecting frame 25 through the welding head moving slide 22. The welding head cylinder connecting frame 25 is fixedly connected to the lower side of the welding device mounting base 3. The cylinder body of the welding head telescopic cylinder 24 is fixedly connected to the welding head cylinder connecting frame 25, and the telescopic end of the welding head telescopic cylinder 24 is connected to the welding head moving slide 22. A rubber component welding stop 26 is also provided in front of the welding part at the front end of the ultrasonic welding head 21. The upper part of the rubber component welding stop 26 is connected to the telescopic end of the stop telescopic cylinder 27. The cylinder body of the stop telescopic cylinder 27 is fixedly connected to the upper side of the welding device mounting base 3 through the stop cylinder connecting frame 28. Furthermore, after each felt detection sensor 8 detects whether the felt on the seat frame 12 to be assembled is missing, the extension and retraction of the block telescopic cylinders 27 on the central rubber component welding device 4 and the side rubber component welding devices 5 on both sides drives the corresponding rubber component welding block 26 to move downward to the front of the rubber component. Then, the extension and retraction of the welding head telescopic cylinders 24 on the central rubber component welding device 4 and the side rubber component welding devices 5 on both sides drives each ultrasonic welding head 21 to move forward and press against the corresponding rubber component, thus forming a layout in which the rubber component welding block 26 is in front, the rubber component is in the middle, and the ultrasonic welding head 21 is in the back, which facilitates the subsequent welding of the rubber component by the ultrasonic welding head 21 on the seat frame.

[0022] On the fixture base plate 2, around the two frame hooks 6, several sets of felt detection sensors 8 are respectively provided to detect whether the felt is missing at corresponding positions on the seat frame. The felt detection sensors 8 are connected to the fixture base plate 2 through sensor brackets. At the lower left and right ends of the fixture base plate 2, frame mounting hole detection pins 9 are respectively provided to engage with the two frame mounting holes on the lower left and right sides of the seat frame 12 to be assembled. Furthermore, to facilitate operation by workers of different heights, adjustable bases 11 are respectively provided at the four corners of the bottom of the main frame 1 to adjust the height of the entire device. Protective light curtains 10 are respectively provided on the left and right sides of the operating port at the front of the main frame 1 to ensure the personal safety of the workers when the equipment is in operation.

[0023] When using this stable rear seat frame assembly fixture, firstly, the steel wires on both sides of the seat frame 12 to be assembled, after the felt and rubber parts have been installed, are hung on the two frame hooks 6 on the fixture base plate 2. Furthermore, the frame mounting hole detection pins 9 at both ends of the lower part of the fixture base plate 2 are inserted into the two seat frame mounting holes on the left and right sides below the seat frame 12 to check whether the seat frame mounting holes can be properly and smoothly installed. After the seat frame 12 is installed in place, the A-reference clamping cylinders 19 of the four frame A-reference clamping mechanisms 7 are retracted, causing the A-reference clamping blocks 20 to move downwards, thereby clamping the A-reference positioning in the middle of the seat frame onto each A-reference support seat 17, completely fixing the seat frame 12 to be assembled. Then, each felt detection sensor 8 detects whether the felt on the seat frame 12 to be assembled is missing. After the felt inspection is completed, the stop-block telescopic cylinders 27 on the central rubber component welding device 4 and the side rubber component welding devices 5 are used to move the corresponding rubber component welding stop blocks 26 downwards to the front of the rubber component. Then, the welding head telescopic cylinders 24 on the central rubber component welding device 4 and the side rubber component welding devices 5 are used to move each ultrasonic welding head 21 forward and press against the corresponding rubber component. Subsequently, the ultrasonic welding heads 21 begin welding, firmly welding the three sets of rubber components onto the seat frame. After inspection and welding are completed, the stop-block telescopic cylinders 27 and the welding head telescopic cylinders 24 respectively drive the rubber component welding stop blocks 26 and the ultrasonic welding heads 21 to retract, and extend the A-reference clamping cylinders 19 of the four frame A-reference clamping mechanisms 7 upwards, thereby releasing the seat frame. Finally, the staff removes the assembled and welded seat frame for packaging.

Claims

1. A structural stable rear seat frame assembly jig comprising a main frame (1) characterized in that: The main frame (1) is provided with a clamp base plate (2). Four skeleton A reference clamping mechanisms (7) are provided in the middle of the clamp base plate (2). The skeleton A reference clamping mechanisms (7) are arranged in pairs and symmetrically. Skeleton hooks (6) are provided on both sides of the four skeleton A reference clamping mechanisms (7) in the middle. Several sets of felt detection sensors (8) are also provided around the skeleton hooks (6). The felt detection sensors (8) are connected to the clamp base plate (2) through sensor brackets. Skeleton mounting hole detection pins (9) are provided at the left and right ends of the lower part of the clamp base plate (2). Furthermore, a welding device mounting base (3) is provided on the upper part of the clamp base plate (2). The welding device mounting base (3) is fixedly connected to the main frame (1) above the clamp base plate (2). A middle rubber part welding device (4) is provided in the middle of the welding device mounting base (3). A side rubber part welding device (5) is arranged symmetrically on the left and right sides of the middle rubber part welding device (4).

2. The structural stable rear seat frame assembly fixture of claim 1, wherein: The skeleton hook (6) includes a hook connecting seat (13), a support groove base (14) is provided on the hook connecting seat (13), a skeleton B reference support slot (15) is provided inside the support groove base (14), and a limit pin hole (16) is also provided on the side of the support groove base (14), and a limit pin is provided in the limit pin hole (16) for limiting the position of the skeleton B reference support slot (15).

3. The structural stable rear seat package frame assembly fixture of claim 1, wherein: The frame A reference clamping mechanism (7) includes a vertically arranged A reference support seat (17), an A reference support pad (18) is provided on the top of the A reference support seat (17), and a vertically arranged A reference clamping cylinder (19) is also provided on the side of the A reference support seat (17). An A reference clamping block (20) is provided at the telescopic end of the A reference clamping cylinder (19), and the clamping end of the A reference clamping block (20) is located directly above the A reference support seat (17).

4. The structural stable rear seat package tray assembly fixture of claim 1, wherein: The structure of the middle rubber component welding device (4) and the side rubber component welding devices (5) are the same, both including an ultrasonic welding head (21). The ultrasonic welding head (21) is slidably connected to the welding head moving slide rail (23) provided on the welding head cylinder connecting frame (25) through the welding head moving slide (22). The welding head cylinder connecting frame (25) is fixedly connected to the lower side of the welding device mounting base (3), and the cylinder body of the welding head telescopic cylinder (24) is fixedly connected to the welding head cylinder connecting frame (25). The telescopic end of the welding head telescopic cylinder (24) is connected to the welding head moving slide (22). A rubber component welding stop block (26) is also provided in front of the welding part of the front end of the ultrasonic welding head (21). The upper part of the rubber component welding stop block (26) is connected to the telescopic end of the stop block telescopic cylinder (27). The cylinder body of the stop block telescopic cylinder (27) is fixedly connected to the upper side of the welding device mounting base (3) through the stop block cylinder connecting frame (28).

5. The structurally stable rear seat frame assembly fixture according to claim 4, characterized in that: The structure and shape of the front welding part of the ultrasonic welding head (21) of the middle rubber component welding device (4) and the side rubber component welding device (5) correspond to the structure of the rubber components at various positions on the seat frame (12) to be assembled.

6. The structurally stable rear seat frame assembly fixture according to claim 1, characterized in that: Protective light gratings (10) are provided on the left and right sides of the operation port at the front of the main frame (1).

7. The structurally stable rear seat frame assembly fixture according to claim 1, characterized in that: Adjustable bases (11) are respectively provided at the four corners of the bottom of the main frame (1).

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