JPS6071134A - Method of installing rear upper panel and device therefor - Google Patents

Abstract

PURPOSE:To joint a rear upper panel of the vehicle body of an automobile to a side body, by providing such an arrangement that the rear upper panel is tilted toward the front end side of the main floor prior to the jointing of the side body, and the rear upper panel is pulled back to its normal position after the jointing of the side body. CONSTITUTION:In an assembling device for the vehicle body of an automobile, a rotating jig 51 presses a rear upper panel 1, and tilts it toward the front end side of a main floor 3 about the joint section O between the rear upper panel 1 and the main floor 3 as a fulcrum. When the panel is tilted to a prdetermined angle, a motor is stopped. Then a side body fixture joints a side body to the main floor 3. After this jointing the panel 1 which has been tilted is pulled back to its normal position where the panel 1 abuts against the side body from the inside of the vehicle body, and then is welded to the side body by means of a welding gun.

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, when assembling the rear upper panel to the floor main and side bodies, for example, a positioning means for receiving the floor main conveyed by a shuttle bar from the shuttle bar and positioning the rear upper panel at a position is required. A mechanism is used to assemble the side body, which transports the sight body to the position where it is positioned, and positions and joins it to the floor main, and a mechanism, which transports the rear upper panel to the floor main to which the side body has been joined, positions and joins it, and assembles the front panel. This was done using equipped automobile body assembly equipment.

However, when assembling the rear upper panel using such conventional automobile body assembly equipment, if the rear upper panel is joined to the main floor before the vehicle body, the rear upper panel will get in the way and may cause the side body to be joined. Since this was not possible, the side bodies were first joined to the main floor, and then the rear upper panel was joined to the main floor and side bodies. Therefore, as shown in FIG. 1, the rear upper panel 1 inevitably rests on the fender z of the side body, that is, the rear upper panel 1 contacts the rear fender 2 from the outside of the vehicle body, and the rear upper panel 1
If a defect occurs in the seal at the joint between the rear fender 2 and the rear fender 2, water will flow into the vehicle body from there, 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 wing panel and the rear fender of the side body. Connect the rear upper panel to the floor main before joining the side bodies so that it will not get in the way when joining the side bodies to the floor main. By providing a method for assembling the rear upper panel in which the rear upper panel is assembled by tilting it to the side body, and then pulling it back to the normal position and joining it to the side body after joining the sight body, and by providing a device for carrying out this method, the above problems can be solved. It aims to solve the problem.

The present invention will be explained below based on the drawings.

FIG. 2.3.4 is a diagram showing an embodiment of the present invention. First, to explain the configuration, 4 is a shuttle bar, and 5 is a shuttle bar.
is a lid that moves up and down in accordance with the movement of the piston rod 7a of the hydraulic cylinder 7 erected on the base 6. 8
As shown in detail in FIG. 4, hooks 11 and 12 are provided on the lifter base 5a of the lifter 5, and the hooks 11 and 12 rotate around the pin 10 in accordance with the movement of the piston rod 9a of the hydraulic cylinder 9. By engaging member 13,
The height W adjustment mechanism changes the upper limit position of the lifter 5, that is, the assembly position of the rear upper panel 1 and side body (not shown) to the floor main 3, depending on the type of car to be machined. A pair of rails 15 and 15 are laid on the upper surface of the lifter head 5a of the lifter 5, extending in the direction in which the shuttleper 4 extends, that is, in the front-rear direction of the floor main 30. Although FIG. 2 shows only one side of the front side of the apparatus for assembling the rear upper panel according to the present invention, the other side (not shown) is constructed in the same manner. A slide base 16 is provided on the rail 15.15 and is slidable along the rail 15.15. This slide base 16 is connected to a piston rod 17a of a fluid pressure actuated cylinder 17 fixed to the lid base 5a, and slides in response to the movement of the piston rod 17a back and forth. The rail 15.15, slide base 16, and cylinder 17 are combined to form a longitudinal position adjustment mechanism 18.

20.20 is a guide means with rollers 21a and 21b provided at both ends of the upper surface of the slide base 16;
28 is guided by the guide means 20.20 and the third
As shown in the figure, the assembly is done in the floor main 3 at position G.
The main body of the head support section is rotatable in the directions of arrows A and B in the figure about the joint 0 between the rear upper panel 1 and the rear upper panel 1. At the center position in the width direction of the lower end surface on the side of the main body of the head support part, there is an arcuate surface 29 centered on the joint O between the floor main 3 and the rear upper panel l.
A plate body 31 on which 0 is formed is provided.

A stopper 22 is fixed to the slide base 16 and comes into contact with the plate 31 to define one end of the rotation range of the head support body wing. The wing is a motor that is attached to the upper surface of the slide base 16 and can rotate in forward and reverse directions, and U is a speed reducer connected to the motor arm. A drive shaft 26 supported by a bearing 5.25 is connected to the output shaft 24a of the reducer 24.The drive shaft 26 is connected to the rank 3 of the plate 31.
A pinion 27 that meshes with the pinion 0 and rotates the head support body 4 is fixed. Said motor 23, deceleration ta24
, the bearing base 25, the drive shaft 26, and the pinion 27 are combined to form a drive mechanism 33 of the head support body. Further, the lifter 5, the height position adjustment mechanism 8, the longitudinal position adjustment mechanism 18, the guide means 20, the stopper 22,
Brackets 36 are rotatably attached by pins 37 to both ends of the head support main body 28, which together constitute a base 34 of the drive mechanism 33. 3 is a hydraulic cylinder rotatably attached to the head support body 28 in close proximity to each bracket 36, and a piston rod 38a of this cylinder 38 is rotatably attached to one end of the bracket 36. connected. Also, both brackets 36 and 36 are links 40
．． 41.42, and a shaft 43 connected to a link 42.42° of the parallel linkage 39.39. As a result, both bracket throats 36.36 are cylinder 38.38.
According to the movement of each piston rod 38a, the C pin 37.
They rotate in synchronization around 37. A hydraulic cylinder 44 is fixed to each bracket 36, and its piston rod 44a extends along a slide plate 45, 46 provided on the bracket 36 in a direction perpendicular to the shuttleper 4 (in the width direction of the main floor). It is connected to a slidable slider 47. Said cylinder 4
4. The slide plates 45, 46 and the 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 shuttleper 4 via brackets 1-53. Jigs 51 and 52 having gauge surfaces that are shaped to match the shape of the rear upper panel 1 of different vehicle models are attached. These jigs 51 and 52 move the guide rods 51 and 52 according to the movement of the piston rods 49a and 50a of the cylinders 49 and 50, respectively.
It is possible to move forward and backward while being guided by 5, and it 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, 54, pin 37, width direction position adjustment mechanism 48, cylinder 49, 50
, jigs 51, 52, guide rods 55, and clampers 56 are combined to form a head part 57, and the head support body 28, plate body 31, cylinder 38, parallel link mechanism 39, and shaft 43 are combined to form a head part 57. A head support portion 58 rotatably supports the head portion 57.

The base portion 34, head portion 57, and head support portion 5 as described above.
The operation of the rear upper panel assembling device, which is generally composed of 8, will be explained below.

Now, when assembling the rear upper panel, the base 34 of the device is at 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 head 5a is at the lower limit. Assume that there is. At this time, the head support portion 58 is rotated in the direction indicated by the arrow in FIG. 3 until the plate body 31 comes into contact with the stopper 22,
Due to the retreat of the piston rod 38a of the cylinder 38, the piston rod 38a of the cylinder 38 is rotated about the pin 37 in the direction of the arrow in FIG. 3 to the position shown by the imaginary line. When the floor main 3 carried by the shuttleper 4 is supported by another lid (not shown) and positioned at a position for assembly, the cylinder 7 of the equipment lid 5 is activated to assemble the rear upper, and the piston rod 7a is moved. protrude (rise); And 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 moved as shown by the imaginary line in FIG. Receive it on that game surface. Then, the clamper 56 has its clamp claw 56a.
Fix the rear upper panel 1 to the gauge surface. Then,
The piston throat 38a of each cylinder 38 of the head support part 58 protrudes, and each head part 57 rotates by a predetermined angle in the direction of arrow C in FIG. Position it at the position indicated by the solid line in Figure 3). In order to accurately position the rear upper panel 1 with respect to the floor main 3 in the assembly position, the position of the jig 51 is adjusted in advance by the longitudinal position adjustment mechanism 18 and the width direction position adjustment mechanism 48 depending on the vehicle type. regulated. Then, when the rear upper panel 1 is joined to the floor main 3 by a welding gun (not shown), the motor arm of the drive mechanism 33 is activated, the pinion n is rotated, and the head support part 58 and the head 57 are connected to each other.
are rotated together in the direction of arrow B in FIG. 3 using the joint 0 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 l and is tilted towards the front end of the floor main 3 using the joint O with the floor main 3 as a fulcrum as shown in the virtual pattern in FIG. When the rear upper panel 1 is tilted at a predetermined angle, the motor arm stops operating, and then a known sidepode fixture (not shown) joins a sidepodium (not shown) to the floor main 3.

When joining this side pode, as mentioned above, since the rear upper panel 1 is tilted forward from the normal assembly position, the side pode should not interfere with the rear upper panel 1 (easily attached to the floor main panel). 3. Once the side pode is joined,
The motor arm now rotates in the opposite direction, and the head support section 58
The head part 57 is integrated with the joint part 0 between the rear upper panel l and the floor main 3 as the rotation axis, and the arrow A in FIG.
direction. As a result, the rear upper panel 1 is attached to the floor main 3 using the joint O with the floor main 3 as a fulcrum.
is pulled back toward the rear end. When the plate 31 of the head support portion 58 comes into contact with the stopper 22, that is, when the rear upper panel l returns to its normal assembled position, the motor holder stops operating. In this position, the rear upper panel 1 is in contact with the side podium 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 joining is completed, clamper 5
6 is released, and then the piston rods 38a of each cylinder wing of the head support portion 58 are moved back. As a result, the head portion 57 rotates in the direction of the arrow 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 lower limit position. At the same time, another lid supporting the floor main 3 is also lowered, and the assembly of the rear upper panel 1, floor main 3, and side podium is transferred to the shuttleper 4 on the way down. Then, the shuttleper 4 transports this assembly to the next processing stage.

As explained above, according to the present invention, there is a method for assembling the rear upper panel to the floor main and side podium, in which the rear upper panel received at the receiving position is carried to the floor main and then assembled. After joining the floor main which is positioned in position, the rear upper.

After tilting the panel at a predetermined angle toward the front end of the floor main, and then joining the side pode to the floor main, the tilted rear upper panel is pulled back to its normal position, and the rear upper panel is joined to the side pode and rear upper panel. For assembly, grasp the received rear upper panel at the receiving position and rotate it to the floor main position, and for assembly, position the rear upper panel against the floor main that is positioned at the position. The head part to
It includes a head support part that supports the head part, and a liftable base part that supports the head part and the head support part so that the head part and the head support part can be rotated about a joint between the floor main and the upper panel at the assembly position. Rear upper panel assembly can be provided with a device.

As a result, the rear upper panel can be joined to the floor main before the side pode, and the rear upper panel can be brought into contact with the rear fender of the side pode from the inside (lower side) of the vehicle body at the joint between the rear upper panel and the side pode. Therefore, even if there is a defect in the seal at the joint between the rear upper panel and 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 the rear upper panel and the rear fender of the side pode assembled by a conventional automobile body assembly method and device;
The figure is a partial front view of an apparatus for carrying out the rear upper panel assembly method according to the present invention, and FIG.
■A sectional view taken along the arrows; FIG. 4 is a view taken along the ■--■ arrows in FIG. 1---Rear upper panel, 3---Floor main, 34---Base, 57---Head part, 5th---Head support part, 0---Floor main and the joint between the rear upper panel. Patent applicant Nissan Motor Co., Ltd. Figure 1

Claims (2)

[Claims] (1) A method for assembling the rear upper panel to the floor main and side bodies, in which the rear upper panel received at the receiving position is carried to the floor main position for assembly, and the floor is positioned at the position for assembly. After joining the main body, the rear upper panel is tilted at a predetermined angle toward the front end of the floor main body. Next, after joining the side body to the floor main body, the rear upper panel that had been left on the extension side is pulled back to its normal position, and the sight body is and a rear upper panel. (2) Grasp the received rear upper panel at the receiving position and rotate it to the position for assembly to the floor main, and for assembly, position the rear upper panel against the floor main that is positioned at the position. a head part that supports the head part; a head support part that supports the head part; An apparatus for assembling a sliding panel panel, comprising: a capable base;