KR100820427B1 - Body floating protected apparatus in vehicle assemble facilities - Google Patents

Abstract

A vehicle body holding device installed in an assembly line is provided to prevent a vehicle body from moving upwards due to elastic force of a chassis spring by employing a tilting device which pushes the vehicle body down in the vehicle body. A vehicle body holding device installed in an assembly line comprises a support frame(6), a conveying rail(7), and a tilting device(9). The support frame is mounted on a frame of a body conveying device(1). The conveying rail lies from the support frame to a vehicle body(B) loaded on an OHC(Overhead Camshaft) hanger(3). The tilting device moves toward the vehicle body along the conveying rail by a motor driven by a controller(30) and pushes down the vehicle body. The tilting device includes a fixing end(13), a rotating actuator(10), and a fixing actuator(12). The fixing end pushes down the vehicle body to prevent the movement of the vehicle body. The rotating actuator causes a rotating member(11) in a horizontal position to be in a vertical position. The fixing actuator causes the fixing end to push down the vehicle body. The rotating actuator and the fixing actuator are operated by a controller.

Description

Body floating protection device in vehicle assemble facilities

1 is a block diagram of a vehicle body flow prevention device of the assembly line according to the present invention

2 (a), (b) is a configuration diagram of the tilting device and the hanger clamping device constituting the vehicle body flow prevention device according to the present invention

Figure 3 (a), (b) is an operation diagram in which the tilting device and the hanger clamping device constituting the vehicle body flow prevention device according to the invention enters the vehicle body transferred to the assembly line.

Figure 4 (a), (b) is an operating state in which the tilting device constituting the vehicle body flow prevention device according to the present invention enters the vehicle body to fix the vehicle body

    <Description of the symbols for the main parts of the drawings>

1: Body transfer device 2: Transfer rail

3: OHC hanger 4: assembly platform

5: body flow prevention device 6: support frame
7: moving rail 8: moving motor
9: tilting device 10: switching driver
11: switching member 12: fixed actuator
13: fixed end 14: contact block
15 hanger clamping device 21 body input sensor

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22: safety sensor 30: controller

B: body

The present invention relates to an assembly line, and more particularly to an apparatus for preventing the flow of the body of the assembly line to prevent the flow of the conveyed body to facilitate the assembly operation.

In general, due to the manufacturing characteristics of the automobile, the automobile production body moves on a ceiling hanger attachment of the OHC conveyor (EMS OHC, P & F OHC, Fiction OHC) suspended from the ceiling, and the assembly work of the lower body including painting work This is done and produced.

Such an OHC conveyor typically has a structure consisting of a hanger that carries a body body while moving on a chain moved by a roller on an OHC conveyor rail, and an OHC conveyor has a rail brake that holds a hanger that carries the body body. To stop the hanger.

However, in the case of assembling the chassis to the body conveyed through the OHC conveyor suspended from the ceiling, in particular, when the shock absorber forming the rear suspension is mounted on the body, the body suspended from the hanger of the OHC conveyor is Due to the elasticity, there is a phenomenon that it is displaced upwards, which causes inconvenience to the work.

In order to do this, the body is hung by the chain to prevent the body from being pulled out by the spring force, but this requires two manual workers and also creates a risk of frequent safety accidents. As the worker visually inserts the chain into the chain after the lifting, safety accidents occur frequently when the body is lifted when the chain is broken or the chain is missing due to a mistake.

In addition, the chain fitting method takes a lot of work time because the work is performed by hand manually, especially when the chain body is not pulled tightly due to the difference in distance from the body body in the common line. There is also a phenomenon, the inconvenience that requires excessive concentration at work.

Accordingly, the present invention has been invented in view of the above, and when the rear suspension is mounted as a vehicle body of a small and medium-sized RV vehicle mounted on a hanger of an OHC conveyor, the body body is prevented from rising by the spring elasticity of the shock absorber. The purpose is to eliminate the risk of accidents and convenience of work by pressing the floor of the car body.

In addition, an object of the present invention is to have a versatility that can be fixed automatically to the body body, and also can be used in common in the case of heterogeneous vehicles (LPG, diesel, gasoline).

The present invention for achieving the above object, the body transfer device for transferring the OHC hanger loaded with the vehicle body to the assembly platform along the transfer rail is arranged on the ceiling of the vehicle body moving device; The vehicle is moved toward the vehicle body along the moving rail by a support frame mounted on a frame constituting the body transfer device, a moving rail arranged toward the vehicle body loaded on the OHC hanger in the support frame, and a moving motor driven by a controller. A body flow prevention device comprising a tilting device which enters the inside and presses and fixes the vehicle body; A hanger clamping device having a clamp for holding and fixing a portion of an OHC hanger located on an assembly platform through the body transfer device, and mounted on a frame constituting the body transfer device by using a guide rail; The controller is configured to control various devices used in the operation of the OHC hanger and the mounting of the rear wheel suspension.

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Then, the tilting device is controlled by the controller to enter the vehicle body and press the bottom of the vehicle body to prevent the flow of the vehicle body, and to operate the switching member for switching the fixed end from the horizontal state to the vertical state after entering the vehicle body. The switch driver is driven and the fixed end is characterized by consisting of a fixed driver driven by the controller to press the bottom of the vehicle body.

In addition, the fixed end is characterized in that the contact block protruding from a portion of the bottom surface of the fixed end in consideration of the height difference of the floor panel that is the floor of the vehicle being pressed.

In addition, the tilting device further includes a vehicle entry sensor for detecting a position and a shape of the door forming unit so that interference by the door forming unit does not occur when entering the door through the door forming unit of the vehicle body. It is characterized in that the safety sensor further detects that the rotation is made.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 shows a block diagram of the vehicle body flow prevention device of the assembly line according to the present invention, the vehicle body flow prevention device according to the present invention is a vehicle body (B) is loaded along the conveying rail (2) arranged on the ceiling Body transport device 1 for transporting the OHC hanger 3 to the assembly platform 4, and the vehicle body to prevent the flow of the vehicle body (B) located on the assembly platform 4 through the body transport device (1) (B) the vehicle body flow prevention device (5) mounted on the frame constituting the body transfer device (1) to enter the inside, the OHC hanger (3) located on the assembly platform (4) through the body transfer device (1) ) And a hanger clamping device 15 mounted on a frame constituting the body transfer device 1 to hold and fasten), and a controller 30 for controlling the devices 1, 5, 15.

Here, the controller 30 is a programmable ladder controller (PLC) using a computer or commonly used.

The body flow prevention device 5 includes a support frame 6 mounted on a frame constituting the body transfer device 1, and a vehicle body B loaded on the OHC hanger 3 in the support frame 6. The moving rail 7 arranged toward the side and the moving motor 8 driven by the controller 30 are moved toward the vehicle body B along the movement rail 7 to enter the vehicle body B and enter the vehicle body B. It consists of a tilting device (9) for pressing and fixing.

In addition, the tilting device 9 enters the inside of the vehicle body B, presses the bottom of the vehicle body B, and fixes the end 13 to prevent the flow of the vehicle body B, and enters and fixes the vehicle body B inside the vehicle body B. A switching driver 10 driven by the controller 30 and the fixed end 13 press the bottom of the vehicle body B to operate the switching member 11 for switching the stage 13 from the horizontal state to the vertical state. It consists of a fixed driver 12 driven by the controller 30 to give.

Here, the switching member 11 uses a variety of methods for switching the rotational force of the motor, but will typically use a rack and pinion method.

In addition, the fixed end 13 is provided with a contact block 14 protruding from a portion of the bottom surface of the fixed end 13 in consideration of the height difference between the floor panel which is the bottom of the LPG vehicle and the diesel / gasoline vehicle.

In addition, the fixed actuator 12 uses a brake cylinder as an example.

In addition, the tilting device 9 has a position and position of the door forming unit D so that interference by the door forming unit D does not occur when entering the door through the door forming unit D of the vehicle body B. The vehicle body entry detection sensor 21 is provided to detect a shape, and the vehicle body entrance detection sensor 21 is protruded in accordance with the width according to the shape of the door forming unit D at the fixed end 13 and the door. Upon contact with the forming unit D, a signal is transmitted to the controller 30.

In addition, the tilting device 9 is provided with a safety sensor 22 which detects that the fixed end 13 is rotated by 90 ° and transmits a signal to the controller 30. The safety sensor 22 is rotated. The fixed end 13 is provided.

In addition, the fixed end 13 is further provided with a positioning sensor for transmitting a signal to the controller 30 to detect the position when the fixed end 13 comes down to press the bottom of the vehicle (B).

And, the hanger clamping device 15 has a clamp 20 to restrain the movement of the OHC hanger 3 located on the assembly platform 4 through the body transfer device 1, which is an OHC hanger 3. The conventional structure of catching and fixing a part of ie, using a pneumatic cylinder is spread to both sides and retracted by using a method of fixing.

Hereinafter, the operation of the present invention will be described in detail with reference to the accompanying drawings.

In the vehicle body flow prevention device of the present invention, when the shock absorber of the rear suspension, which forms a chassis on the vehicle body transferred through the OHC conveyor, is mounted on the body B, the body B suspended from the OHC hanger 3 is Due to the elasticity of the chassis spring, it prevents the deviating upwards, which makes it easy to work and prevents the risk of unexpected safety accidents.

This is performed by the OHC hanger 3 on which the vehicle body B is loaded, as shown in FIGS. 2 (a) and 2 (b) along the conveying rail 2 of the body conveying apparatus 1 arranged on the ceiling. 4), the controller 30 receiving the signal of the sensor detecting the entry of the OHC hanger 3 operates the hanger clamping device 15 to enter the OHC hanger 3 entered through the clamp 20. Hold the frame area to fix it.

In addition, the controller 30 waits for operation of injury prevention devices for preventing an injury of an operator during assembly line work.

Subsequently, the controller 30 operates the body flow prevention device 5 to prevent the flow of the vehicle body B suspended from the OHC hanger 3 fixed by the hanger clamping device 15. As shown in (b), the tilting device 9 forming the vehicle body flow prevention device 5 is connected to the OHC hanger along the moving rail 7 of the support frame 6 through the driving force of the moving motor 8. It moves to the vehicle body B loaded in (3).

As such, when the tilting device 9 approaches the vehicle body B, the controller 30 enters the tilting device 9 into the vehicle body B. In this case, the vehicle body entry detection provided at both sides of the tilting device 9 is performed. When the sensor 21 holds the entry position into the vehicle body B, that is, when the vehicle enters the interior as shown in Figs. 4 (a) and (b), the vehicle body has a shape that matches the width of the door forming portion D. The entrance detection sensor 21 detects whether or not the door forming unit D is interfered with and generates a signal.

For example, when the vehicle body entry detection sensor 21 contacts the door forming part D of the vehicle body B when the tilting device 9 enters the vehicle body B, the vehicle body entry detection sensor 21 is generated. The signal is transmitted to the controller 30, whereby the controller 30 stops the driving of the moving motor 8.

In this case, the vehicle body entry detection sensor 21 has a tolerance of about 5 mm with respect to the door forming part D of the vehicle body B.

Subsequently, when the tilting device 9 is safely entered into the vehicle body B, the tilting device 9 is rotated 90 ° to press the floor panel, which is the bottom of the vehicle body B, to prevent flow, which is illustrated in FIG. As described above, when the controller 30 drives the switching driver 10 constituting the tilting device 9, the switching member 11 is rotated through the switching driver 10 to press the bottom of the vehicle body B so that the vehicle body ( B) to rotate the fixed end 13 to prevent the flow of 90 °.

At this time, the 90 ° rotation completion detection of the tilting device (9) is determined by receiving the signal generated by the controller 30, the safety sensor 22 is provided in the tilting device (9) for detecting the rotation angle.

As such, when the fixed end 13 is rotated 90 °, the controller 30 drives the fixed driver 12 mounted to the fixed end 13, and the fixed end 12 is driven according to the driving of the fixed driver 12. When 13 is pushed down toward the floor panel of the bottom of the vehicle body B, as shown in FIG. 4 (b), the tilting device 9 entering the vehicle body B is rotated by 90 °. 13) by pressing the floor panel side of the floor of the vehicle body (B) to prevent the flow of the vehicle body (B).

At this time, the pressing force applied by the fixed end 13 of the tilting device 9 is maintained appropriately, which means that the controller 30 adjusts the driving force of the fixed driver 12 or measures the signal of the sensor measuring the magnitude of the pressing force. Will be judged.

Accordingly, the operator is equipped with a shock absorber that forms the rear suspension without the flow anxiety about the vehicle body B, which is loaded on the OHC hanger 3 and fixed through the tilting device 9, as shown in FIG. The secure mounting operation is performed without fixing the vehicle body using a chain or the like so that the vehicle body B suspended from the hanger 3 does not deviate upward due to the elasticity of the chassis spring.

In addition, the tilting device 9 of the present invention is applied regardless of the vehicle type, which, as shown in FIG. 1, presses the floor panel which is the floor of the vehicle body B while forming the tilting device 9. As the contact block 14 protruding to one side of the fixed end 13 to prevent flow is formed, the contact block 14 is pressed against the floor panel which is the bottom of the diesel / gasoline vehicle, while the contact block is pressed. Since the fixed end 13 portion, in which the 14 is not formed, is pressed on the floor panel, which is the bottom of the LPG vehicle, which protrudes more, the tilting device 9 can be applied regardless of the vehicle type.

As described above, according to the present invention, while entering the vehicle body transferred to the assembly line for mounting the rear suspension through the OHC hanger, the floor panel on the floor is pressed while preventing the flow, and at the same time the hanger on which the vehicle body is mounted. Since the mounting operation of the rear suspension is carried out in a fixed state, when the rear suspension is mounted with the hanger, the flow of the vehicle due to the strong elasticity of the chassis spring can be completely prevented.

In addition, according to the present invention, since the rear suspension is mounted in a state where the vehicle body mounted on the OHC hanger is fixed, there is no need for fixing the vehicle body by the operator, and there is no manual operation of the operator using a chain or the like. There is also an effect that can prevent accidents.

Claims (5)

A body transfer device 1 for transferring the OHC hanger 3 on which the vehicle body B is loaded to the assembly platform 4 along the transfer rails 2 arranged on the ceiling; A support frame 6 mounted on a frame constituting the body transfer device 1, and a moving rail 7 arranged toward the vehicle body B loaded on the OHC hanger 3 in the support frame 6, Tilting device (9) is moved by the moving motor (8) driven through the controller 30 toward the vehicle body (B) along the moving rail (7) to enter the vehicle body (B) to press the vehicle body (B) to fix it Body flow prevention device 5 made of; On the frame constituting the body transfer device 1 is provided with a clamp 20 for holding and fixing a portion of the OHC hanger (3) located on the assembly platform (4) through the body transfer device (1) A hanger clamping device 15 mounted using a guide rail; A controller 30 for controlling various devices used in the operation of the OHC hanger 3 and the mounting of the rear wheel suspension; Body flow prevention device of the assembly line consisting of. 2. The tilting device (9) according to claim 1, wherein the tilting device (9) enters the inside of the body (B) and presses the bottom of the body (B) to prevent the flow of the body (B) and the inside of the body (B). Then, the switch driver 10 and the fixed end 13 driven by the controller 30 to operate the switching member 11 for switching the fixed end 13 from the horizontal state to the vertical state are the vehicle body B. The vehicle body flow prevention device of the assembly line, characterized in that consisting of a fixed driver 12 driven by the controller 30 to press the floor. The fixed end 13 is provided with a contact block 14 protruding from a portion of the bottom surface of the fixed end 13 in consideration of the height difference of the floor panel, which is the floor of the vehicle being pressed. Bodywork prevention device on the assembly line. 3. The interference according to claim 2, wherein when the tilting device 9 enters the inside of the vehicle body B through the door forming portion D of the vehicle body B, the tilting device 9 has interference. The vehicle body flow prevention apparatus of the assembly line, characterized in that the vehicle body entry detection sensor 21 for detecting the position and shape of the door forming unit (D) is further provided so as not to occur. The apparatus of claim 2, wherein the tilting device (9) further includes a safety sensor (22) for detecting that the fixed end (13) rotates by 90 °.

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