CN220825646U

CN220825646U - Error proofing device for tightening force of connecting bolt of backrest of assembly line seat

Info

Publication number: CN220825646U
Application number: CN202322388858.7U
Authority: CN
Inventors: 夏江龙; 杨世建; 夏浩然
Original assignee: Magna Hongli Automotive Systems Hebei Co ltd
Current assignee: Magna Hongli Automotive Systems Hebei Co ltd
Priority date: 2023-09-04
Filing date: 2023-09-04
Publication date: 2024-04-23
Anticipated expiration: 2033-09-04

Abstract

The utility model discloses a tightening force error-proofing device for a backrest connecting bolt of a general assembly line, which relates to the technical field of automobile seat assembly and comprises a double-degree-of-freedom sliding table capable of moving along an X axis and a Y axis, wherein the bottom of the double-degree-of-freedom sliding table is provided with a vertical hanging arm, both sides of the hanging arm are provided with spring balancers, the hanging arm is provided with two Z-guide sliding blocks, Z-guide sliding rods are arranged in the two Z-guide sliding blocks, the upper ends of the two Z-guide sliding rods are connected with an upper limiting block, the lower ends of the two Z-guide sliding rods are connected with a lower limiting block, and the lower limiting block is connected with pull wires of the two spring balancers; the lower limiting block is provided with a mounting frame, one side of the mounting frame is connected with an electric torsion gun through a tightening assembly, and the outer side face of the mounting frame is provided with a display for displaying the tightening force of the electric torsion gun. The utility model fixes the working angle of the button gun, reduces the operation difficulty, reduces the rejection rate, saves the physical strength of workers and improves the working efficiency.

Description

Error proofing device for tightening force of connecting bolt of backrest of assembly line seat

Technical Field

The utility model relates to the technical field of automobile seat assembly, in particular to a tightening force error-proofing device for a back connecting bolt of a seat of a general assembly line.

Background

The assembly of existing car seats is usually in the form of a line, each worker standing at a specific station for the screwing of the bolts by means of a button gun. The torque setting control is performed on the button gun by the controller, so that the overtightening or overtightening of the bolts is prevented. As shown in FIG. 1, a station diagram for assembling a backrest and a cushion of an automobile seat is provided, a button gun is suspended on a pull wire of a spring balancer, and the spring balancer is fixed on a double-freedom sliding table capable of moving along an X axis and a Y axis.

The above-mentioned equipment station has the problem: because the button gun is suspended on the pull wire of the spring balancer, the working angle of the button gun is not fixed, and the bolt is easy to deflect by manual control, so that the screw hole is randomly buckled, and the rejection rate is increased; meanwhile, a worker needs to firmly stabilize the gun body when operating the button gun, so that the reverse torque force generated during the operation of the button gun is avoided to drive the gun to rotate, the worker operates for a long time, and the working efficiency is reduced.

Disclosure of utility model

Based on the problems, the utility model aims to provide an error proofing device for tightening force of a back connecting bolt of a seat of a general assembly line, which adopts the following technical scheme:

The utility model provides a tightening force error-proofing device for a backrest connecting bolt of a general assembly line seat, which comprises a double-degree-of-freedom sliding table capable of moving along an X axis and a Y axis, wherein a vertical hanging arm is arranged at the bottom of the double-degree-of-freedom sliding table, spring balancers are arranged on two sides of the hanging arm, two Z guide sliding blocks are arranged on the hanging arm, Z guide sliding rods are arranged in the two Z guide sliding blocks, the upper ends of the two Z guide sliding rods are connected with an upper limiting block, the lower ends of the two Z guide sliding rods are connected with a lower limiting block, and the lower limiting block is connected with pull wires of the two spring balancers; the electric torque gun is characterized in that a mounting frame is arranged on the lower limiting block, one side of the mounting frame is connected with the electric torque gun through a tightening assembly, and a display used for displaying the tightening force of the electric torque gun is arranged on the outer side face of the mounting frame.

Preferably, the double-degree-of-freedom sliding table comprises a connecting plate, wherein X guide sliding blocks are arranged at two ends of the top surface of the connecting plate, X guide sliding rods are connected in the X guide sliding blocks in a sliding manner, and two ends of each X guide sliding rod are connected to an X-direction connecting seat; the bottom surface of connecting plate is provided with Y guide slider, the sliding connection has two Y guide slide bars on the Y guide slider, the end connection of Y guide slide bar is in on the connecting plate.

Preferably, the end parts of the Z-guide sliding rod, the X-guide sliding rod and the Y-guide sliding rod are all provided with buffer parts.

Preferably, the buffer member is a buffer spring or a rubber pad.

Preferably, the tightening assembly comprises a tightening cylinder with a C-shaped cross section, two ends of the tightening cylinder are fixedly connected to the mounting frame, an arc-shaped top block is arranged in the tightening cylinder, a rotatable screw is arranged on the back of the arc-shaped top block, the screw is rotationally connected to the mounting frame, and a rotary hand wheel is arranged at one end of the screw, which is away from the arc-shaped top block.

Compared with the prior art, the utility model has the beneficial technical effects that:

The utility model fixes the working angle of the button gun, reduces the operation difficulty, reduces the rejection rate, saves the physical strength of workers and improves the working efficiency.

Drawings

The utility model is further described with reference to the following description of the drawings.

FIG. 1 is a schematic view of a station for assembling a seat basin frame as described in the background art;

FIG. 2 is a schematic diagram of a device for preventing error in tightening a back bolt of a seat in a general assembly line according to an embodiment of the present utility model;

FIG. 3 is a schematic structural diagram of a dual-degree-of-freedom sliding table according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a tightening assembly according to an embodiment of the present utility model.

Reference numerals illustrate: 1. a double-degree-of-freedom sliding table; 101. a connecting plate; 102. an X guide sliding block; 103. x guide slide bar; 104. an X-direction connecting seat; 105. a Y-guide sliding block; 106. y guides the slide bar; 2. a drop arm; 3. a spring balancer; 4. a Z-guide slider; 401. a Z-guide slide bar; 402. an upper limiting block; 403. a lower limiting block; 5. a mounting frame; 6. a display; 7. a tightening assembly; 701. tightening the cylinder; 702. an arc-shaped top block; 703. a screw; 704. rotating a hand wheel; 8. an electric torque gun; 9. and a buffer member.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments.

As shown in fig. 2, the embodiment discloses a tightening force error proofing device for a back connecting bolt of a seat backrest of a general assembly line, which comprises a double-degree-of-freedom sliding table 1 capable of moving along an X axis and a Y axis, wherein a vertical hanging arm 2 is arranged at the bottom of the double-degree-of-freedom sliding table 1, spring balancers 3 are arranged at two sides of the hanging arm 2, and the spring balancers 3 can move along with the hanging arm 2 in the X direction and the Y direction; two Z-guide sliding blocks 4 are fixed on the vertical arm 2 through bolts, Z-guide sliding rods 401 are arranged in the two Z-guide sliding blocks 4, the upper ends of the two Z-guide sliding rods 401 are connected with an upper limiting block 402, the lower ends of the two Z-guide sliding rods 401 are connected with a lower limiting block 403, and the lower limiting block 403 is connected with pull wires of the two spring balancers 3; the lower limiting block 403 is fixedly provided with a mounting frame 5 through bolts, and one side of the mounting frame 5 is connected with an electric torsion gun 8 through a tightening assembly 7.

The torsion of the electric torsion gun 8 is controlled by the controller, the screwing torsion can be displayed on the display, and in order to facilitate the checking of workers, in this embodiment, the display 6 for displaying the screwing force of the electric torsion gun 8 is arranged on the outer side surface of the mounting frame 5, and the display 6 is electrically connected with the controller. The display 6 has a buzzer function, and when the tightening force of the electric torsion gun 8 reaches a set value, the buzzer alarms.

The electric torsion gun 8 in the embodiment adopts a vertical arrangement mode, and a right-angle driving head is required to be used for the electric torsion gun 8 when the chair backrest and the cushion are assembled.

As shown in fig. 3, the dual-degree-of-freedom sliding table 1 comprises a connecting plate 101, wherein X guide sliding blocks 102 are arranged at two ends of the top surface of the connecting plate 101, an X guide sliding rod 103 is slidably connected in the X guide sliding blocks 102, two ends of the X guide sliding rod 103 are connected to an X-direction connecting seat 104, and the X-direction connecting seat 104 can be fixedly connected to a station frame. The bottom surface of the connecting plate 101 is provided with a Y-guide slide block 105, two Y-guide slide bars 106 are connected on the Y-guide slide block 105 in a sliding way, and the end parts of the Y-guide slide bars 106 are connected on the connecting plate 101. The drop arm 2 and the spring balancer 3 are fixedly connected to the bottom surface of the Y-guide slider 105.

In this embodiment, the ends of the Z-guide slide bar 401, the X-guide slide bar 103 and the Y-guide slide bar 106 are all provided with the buffer 9 to avoid the impact of the slide block. The buffer 9 is a buffer spring or a rubber cushion.

As shown in fig. 4, the tightening assembly 7 comprises a tightening cylinder 701 with a C-shaped cross section, both ends of the tightening cylinder 701 are fixedly connected to a mounting frame 5, the mounting frame 5 is shaped like a Chinese character 'kou', an arc-shaped top block 702 is arranged in the tightening cylinder 701, a rotatable screw 703 is arranged on the back surface of the arc-shaped top block 702, the screw 703 is rotatably connected to the mounting frame 5, and a rotary hand wheel 704 is arranged at one end of the screw 703, which is away from the arc-shaped top block 702; the arc-shaped top block 702 can be driven to move by rotating the hand wheel 704, and the arc-shaped top block is matched with the tightening cylinder 701 to clamp the electric torque gun 8.

The above embodiments are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the protection scope defined by the claims of the present utility model without departing from the design spirit of the present utility model.

Claims

1. The utility model provides a tight force error proofing device is suppressed to assembly line seat back connecting bolt, includes can follow X axle, Y axle motion's two degree of freedom slip tables (1), its characterized in that: the two-degree-of-freedom sliding table (1) is characterized in that a vertical hanging arm (2) is arranged at the bottom of the two-degree-of-freedom sliding table (1), a spring balancer (3) is arranged on two sides of the hanging arm (2), two Z-guide sliding blocks (4) are arranged on the hanging arm (2), Z-guide sliding rods (401) are arranged in the two Z-guide sliding blocks (4), the upper ends of the two Z-guide sliding rods (401) are connected with an upper limiting block (402), the lower ends of the two Z-guide sliding rods (401) are connected with a lower limiting block (403), and the lower limiting block (403) is connected with pull wires of the two spring balancers (3); be provided with installing frame (5) on lower stopper (403), one side of installing frame (5) is connected with electricity through hooping subassembly (7) and turns round rifle (8), the lateral surface of installing frame (5) is provided with and is used for showing display (6) of the tight power of turning round rifle (8).

2. The assembly line seat back attachment bolt tightening force error proofing device according to claim 1, wherein: the double-degree-of-freedom sliding table (1) comprises a connecting plate (101), wherein X guide sliding blocks (102) are arranged at two ends of the top surface of the connecting plate (101), X guide sliding rods (103) are connected in the X guide sliding blocks (102) in a sliding manner, and two ends of each X guide sliding rod (103) are connected to an X-direction connecting seat (104); the bottom surface of connecting plate (101) is provided with Y guide slider (105), sliding connection has two Y guide slide bars (106) on Y guide slider (105), the end connection of Y guide slide bar (106) is in on connecting plate (101).

3. The assembly line seat back attachment bolt tightening force error proofing device according to claim 1, wherein: the ends of the Z-guide sliding rod (401), the X-guide sliding rod (103) and the Y-guide sliding rod (106) are respectively provided with a buffer piece (9).

4. The assembly line seat back attachment bolt tightening force error proofing device according to claim 3, wherein: the buffer piece (9) is a buffer spring or a rubber cushion.

5. The assembly line seat back attachment bolt tightening force error proofing device according to claim 1, wherein: the tightening assembly (7) comprises a tightening cylinder (701) with a C-shaped cross section, two ends of the tightening cylinder (701) are fixedly connected to the mounting frame (5), an arc-shaped top block (702) is arranged in the tightening cylinder (701), a rotatable screw (703) is arranged on the back of the arc-shaped top block (702), the screw (703) is rotationally connected to the mounting frame (5), and a rotary hand wheel (704) is arranged at one end of the screw (703) deviating from the arc-shaped top block (702).