JPS6216791B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for assembling a rear upper panel to a floor main and side body, and an apparatus directly used for carrying out the method.

Conventionally, the assembly of the rear upper panel to the floor main and side bodies involves, for example, a positioning means for receiving the floor main carried by a shuttle bar from the shuttle bar and positioning it at the rear upper panel assembly position, and carrying the side body to the assembly position. A side body assembly mechanism that positions and joins the rear upper panel to the floor main to which the side body is joined, and a rear upper panel assembly mechanism that carries and positions and joins the rear upper panel to the floor main to which the side body has been joined. Ta.

However, when assembling the rear top panel using such conventional automobile body assembly equipment, if the rear top panel is joined to the floor main before the side body, the rear top panel gets in the way and the side body cannot be joined. Assembly was carried out in the order of first joining the side bodies to the main floor, then the rear upper panel to the main floor and side bodies. Therefore, as shown in Fig. 1, the rear upper panel 1 inevitably rests on the rear fender 2 of the side body, that is, the rear upper panel 1 comes into contact with the rear fender 2 from the outside of the vehicle body, and the joint between the rear upper panel 1 and the rear fender 2 is If a seal is defective, water will flow into the vehicle body, and dust will also easily enter, potentially causing rust and corrosion.

This invention was made by focusing on such conventional problems, and it is possible to position the rear upper panel below the rear fender (inside the vehicle body) at the joint between the rear upper panel and the rear fender of the side body. Connect the rear atsupa panel to the floor main before joining the side bodies, and before joining the side bodies, tilt the rear atsuppa panel toward the front end of the floor main so that it does not get in the way when joining the side body to the floor main, and then attach the side body to the floor main. It is an object of the present invention to solve the above-mentioned problems by providing a method for assembling a rear upper panel in which the rear upper panel is returned to its normal position after joining and joined to a side body, and an apparatus for carrying out this method.

The present invention will be explained below based on the drawings. 2, 3, and 4 are diagrams showing an embodiment of the present invention. First, the construction will be described. 4 is a shuttle bar, and 5 is a lifter that moves up and down in response to the movement of a piston rod 7a of a hydraulic cylinder 7 erected on a base 6. 8 is a piston rod 9 of a hydraulic cylinder 9, as shown in detail in FIG.
The lifter base 5a of the lifter 5 has hooks 11 and 12 that rotate around the pin 10 in accordance with the advance and retreat of the lifter a.
By engaging with the engaging member 13 provided at the top, the upper limit position of the lifter 5, that is, the assembly position of the rear upper panel 1 and the side body (not shown) to the floor main 3, can be changed depending on the type of car to be machined. It is a height position adjustment mechanism. Lifter 5
A pair of rails 15, 15 extending in the extending direction of the shuttle bar 4, that is, in the front-rear direction of the floor main 3, are laid on the upper surface of the lifter base 5a. Although only one side of the front side of the rear upper panel assembly apparatus according to the present invention is shown in FIG. 2, the other side (not shown) is similarly constructed. On the rails 15, 15 there is a rail 1.
Slide base 16 that can slide along 5 and 15
is provided. This slide base 16 is connected to a piston rod 17a of a hydraulic cylinder 17 fixed to the lifter base 5a.
It is adapted to slide according to the movement of the piston rod 17a. The rails 15, 15, slide base 16, and cylinder 17 together constitute a longitudinal position adjustment mechanism 18. 20,20
28 is a guide means with rollers 21a and 21b provided at both ends of the upper surface of the slide base 16, and 28 is a guide means with rollers 21a and 21b provided at both ends of the upper surface of the slide base 16, and 28 is a guide means with rollers 21a and 21b provided at both ends of the upper surface of the slide base 16, and 28 is a guide means with rollers 21a and 21b provided at both ends of the upper surface of the slide base 16. Joint part O between 3 and rear top panel 1
This is a head support main body that can be rotated in the directions of arrows A and B in the figure about . At the center position in the width direction of the lower end surface of the head support body 28, there is an arcuate surface 29 centered on the joint O between the floor main 3 and the rear upper panel 1.
A plate body 31 on which 0 is formed is provided. 22
A stopper is fixed to the slide base 16 and abuts against the plate 31 to define one end of the rotation range of the head support body 28. 23 is a motor that is attached to the upper surface of the slide base 16 and can rotate in forward and reverse directions, and 24 is a speed reducer connected to the motor 23. The output shaft 24a of the reducer 24 has a bearing 25,
A drive shaft 26 is connected thereto, and a pinion 27 is fixed to the drive shaft 26, which engages with the rack 30 of the plate 31 and rotates the head support body 28. . Said motor 2
3, reducer 24, bearings 25, 25, drive shaft 26,
The pinion 27 is combined with the head support body 2
8 drive mechanisms 33 are constructed. The lifter 5, the height adjustment mechanism 8, the longitudinal position adjustment mechanism 18, the guide means 20, the stopper 22, and the drive mechanism 33 are combined to form a base 34 at both ends of the head support main body 28. A bracket 36 is rotatably attached to each portion by a pin 37. 38 is each bracket 36,
A piston rod 38a of the cylinder 38 is rotatably connected to one end of the bracket 36. Also, both brackets 36, 36 are connected to link 4.
Parallel link mechanism 39, 3 consisting of 0, 41, 42
9 and a shaft 43 connected to the links 42, 42 of the parallel link mechanisms 39, 39. As a result, both brackets 36,3
6 is each piston rod 38 of the cylinder 38, 38
They are designed to rotate synchronously around pins 37, 37 in accordance with the advance and retreat of a. Each bracket 36
A fluid pressure operated cylinder 44 is fixed to the
The piston rod 44a is connected to a slider 47 that is slidable along slide plates 45, 46 provided on the bracket 36 in a direction perpendicular to the shuttle bar 4 (in the width direction of the main floor). The cylinder 44, the slide plate 45,
46 and slider 47 are combined to form a width direction position adjustment mechanism 48. A plurality of fluid pressure operated cylinders 49, 50 are fixed to the slider 47 in parallel to the shuttle bar 4 via brackets 53, 54, and the piston rods 49a, 50a of each cylinder 49, 50 have a rear upper panel attached to a different vehicle model. Jigs 51 and 52 each having a gauge surface having a shape that matches the shape of 1 are attached. These jigs 51, 52 are cylinders 49,
According to the movement of the piston rods 49a and 50a of 50, the piston rods can move forward and backward while being guided by guide rods 55, and can be switched depending on the type of vehicle. A known clamper 56 for fixing the rear upper panel 1 is attached to each of the jigs 51 and 52. Each of the brackets 36, 53, 5
4, pin 37, width direction position adjustment mechanism 48, cylinders 49, 50, jigs 51, 52, guide rod 5
5. The clamper 56 is combined to form a head section 57, which includes the head support section body 28, the plate body 31, the cylinder 38, the parallel link mechanism 39, and the shaft 4.
3 constitute a head support section 58 which rotatably supports the head section 57.

The operation of the rear upper panel assembly apparatus, which is generally composed of the base portion 34, head portion 57, and head support portion 58 as described above, will now be described.

It is now assumed that the base 34 of the rear upper panel assembly device is in the standard rest position, that is, the piston rod 7a of the cylinder 7 of the lifter 5 is completely retracted (lowered) and the lifter base 5a is located at the lower limit. At this time, the head support part 58 rotates in the direction of arrow A in FIG. It has rotated in the direction of arrow D in FIG. 3 to the position shown by the imaginary line. When the floor main 3 carried by the shuttle bar 4 is supported by another lifter (not shown) and positioned at the assembly position, the cylinder 7 of the lifter 5 of the rear upper assembly assembly operates, and the piston rod 7a protrudes ( Rise. Then, the lifter base 5a rises to the upper limit defined by the height position adjustment mechanism 8. During this ascent, the jig 51 of the head part 57 corresponding to the vehicle type being assembled is placed at the rear upper panel receiving position, and the rear upper panel 1, which has been transported by a transport device (not shown), is gauged as shown by the imaginary line in FIG. Pick it up in person. Then, the clamper 56 fixes the gauge surface of the rear upper panel 1 with its clamp claw 56a. Next, the piston rods 38a of each cylinder 38 of the head support part 58 protrude, and each head part 57 rotates by a predetermined angle in the direction of arrow C in FIG. (the position shown by the solid line in FIG. 3). In addition, in order to accurately position the rear upper panel 1 with respect to the floor main 3 in the assembled position, the longitudinal position adjustment mechanism 1 is installed in advance according to the vehicle model.
8 and the width direction position adjustment mechanism 48
1 position has been adjusted. Then, when the rear upper panel 1 is joined to the floor main 3 by a welding gun (not shown), the motor 2 of the drive mechanism 33
3 operates, the pinion 27 rotates, and the head support part 58 and the head 57 are rotated together in the direction of arrow B in FIG. 3 about the joint O between the rear upper panel 1 and the floor main 3 as a rotation axis. As a result,
The rotating jig 51 presses the rear upper panel 1 and is tilted toward the front end of the floor main 3 using the joint O with the floor main 3 as a fulcrum as shown by the imaginary line in FIG. 3. When the rear upper panel 1 is tilted at a predetermined angle, the motor 23 stops operating, and then a known side body fixture (not shown) joins a side body (not shown) to the floor main 3. When joining this side body, since the rear top panel 1 is tilted forward from the normal assembly position as described above, the side body can be easily joined to the floor main 3 without interfering with the rear top panel 1. be able to. When the joining of the side bodies is completed, the motor 23 rotates in the opposite direction, uniting the head support part 58 and the head part 57 with the joint O between the rear upper panel 1 and the floor main 3 as the rotation axis as shown in FIG. Rotate it in the direction of arrow A. As a result,
The rear upper panel 1 is pulled back toward the rear end side of the floor main 3 using the joint O with the floor main 3 as a fulcrum. The plate body 31 of the head support part 58 is the stopper 2
2, that is, when the rear upper panel 1 returns to its normal assembly position, the motor 23 stops operating. In this position, the rear upper panel 1 is in contact with the side body from the inside of the vehicle body. Next, the rear upper panel 1 is joined to the side body using a welding gun (not shown). When the joining is completed, the clamper 56 is released,
Subsequently, the piston rods 38a of each cylinder 38 of the head support portion 58 are retracted. As a result, the head portion 57 rotates in the direction of arrow D in FIG. 3 to the position shown by the imaginary line in the figure. Next, the piston rod 7a of the cylinder 7 of the lifter 5 retreats (descends), and the lifter base 5a descends to the lowering limit position. At the same time, another lifter supporting the floor main 3 also descends, and the assembly of the rear upper panel 1, floor main 3, and side body is transferred onto the shuttle bar 4 during its descent. The shuttle bar 4 then transports this assembly to the next processing stage.

As explained above, according to the present invention, there is a method for assembling a rear upper panel to a floor main body and a side body, in which the rear upper panel received at a receiving position is carried to the assembly position to the floor main body and positioned at the assembly position. After joining the rear atsupa panel to the floor main, tilt it at a predetermined angle toward the front end of the floor main. Then, after joining the side body to the floor main, pull the tilted rear atsupa panel back to its normal position, and then connect the side body and rear atsupa panel. and a head portion that grasps the rear upper panel received at the receiving position, rotates it to the assembly position to the floor main, and positions the rear upper panel with respect to the floor main positioned at the assembly position. a head support portion that supports the head portion; and an elevating and lowerable base portion that rotatably supports the head portion and the head support portion around a joint portion between the floor main and the upper panel at the assembly position. It is possible to provide a rear upper panel assembly device comprising: As a result, the rear top panel can be joined to the main floor before the side body, and the rear top panel can be brought into contact with the rear fender of the side body from the inside (lower side) of the vehicle body at the joint between the rear top panel and the side body. Even if there is a defect in the seal at the joint between the rear upper panel and the rear fender, there is no risk of water or dust entering the interior of the vehicle.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the overlapping state of the joint between a rear upper panel and a rear fender of a side body assembled by a conventional automobile body assembly method and device, and FIG. 2 is a rear upper panel assembly method according to the present invention. FIG. 3 is a sectional view taken along the - arrow in FIG. 2;
FIG. 4 is a view taken along the - arrow in FIG. 1...Rear top panel, 3...Floor main, 34...Base, 57...Head part, 58...
Head support part, O...Joining part of floor main and rear top panel.

Claims (1)

[Scope of Claims] 1. A method for assembling a rear upper panel to a floor main and a side body, which comprises carrying the rear upper panel received at a receiving position to a position for assembling it to the floor main and attaching it to the floor main positioned at the assembly position. After joining, tilt the rear atsupa panel to the front end of the main floor at a specified angle,
Next, after joining the side body to the floor main, the tilted rear up panel is pulled back to its normal position, and the side body and the rear up panel are joined. 2. Grasp the rear upper panel received at the receiving position and rotate it to the assembly position to the floor main.
A head part that positions the rear upper panel with respect to the floor main that is positioned at the assembly position, a head support part that supports the head part, a joint between the floor main and the rear upper panel at the assembly position, and A rear top panel assembling device comprising: a base that can be raised and lowered to rotatably support the rear top panel around a rotation center;