JPS5833578A - Transferring device for vehicle body of automobile - Google Patents

Abstract

PURPOSE:To enable to transfer a vehicle body to a correct position on a conveyor, by providing a pressing means and a stopping means on the main body of a lift table. CONSTITUTION:When a rod 3r is operated, the outside surface of a side sill 1c on the side of an outward deviation is pressed by a pressure plate 3p, while a flat plate 5a capable of sliding in the width direction of the vehicle body 1 is moved while deforming a spring, and the vehicle body 1 is led to a normal position. In this case, a side sill 1a on the side of an inward deviation is not pressed by the plate 3p, and the plate 3p functions as a stopper. Then, lowering the main body 3e of the lift table results in that the lower end part 1c of a flange is transferred onto a side sill holder 4c placed on a tact conveyor 4. Accordingly, the vehicle body 1 can be correctly transferred onto the conveyor 4.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automobile body transfer device for transferring an automobile body from a suspended hanger to a correct position on a conveyor.

On a temporary automobile assembly line, automobile bodies that move while being suspended on hangers due to the traction force of an overhead conveyor may be transferred to a floor conveyor etc. for the convenience of assembly work. Conventionally, there are the types shown in FIGS. 1 to 3.

To explain the drawings, 1 is a car body, 1a is a side sill of the car body, 1b is a floor, and 1c is a side sill 1.
The lower end of the flange of a, 2 is a hanger that suspends the vehicle body 1 and can be raised and lowered, in this example, a tilt hanger;
3 is a table lifter, 3h is a lift table main body, 3a is a V-groove attachment installed on the top surface of the main body 3h, 3m is 3b is a bed with a built-in lifting cylinder (not shown) for the lift table main body 3h, 3c is a rod for the lifting cylinder that supports the lift table main body 3h, 4 is a groove formed in the V-groove attachment.
1 is a conveyor for transporting the vehicle body 1, in this example a tact conveyor, 4a is a front rail receiver installed on the tact conveyor, 4b is a dart lower receiver, 4c is a side sill receiver, and 4d is a rear axle receiver.

Next, if we describe the order of operation for transfer, +11! I Soft double body 3h rises and stops at a predetermined height.

(2) The tilt hanger 2 is lowered and the lower end of the flange 1c of the side sill 1a of the vehicle body 1 is connected to the V-groove attachment 3a.
It fits into the 3m V groove.

(3) Telthanger 2 descends a little further and stops.

That is, the vehicle body l is transferred onto the lift table main body 3h.

(4) The rotating arm 2a of the tilt hanger 2 rotates to the outside of the vehicle body 1, and the tilt hanger 2 rises.

(5) The lift table main body 3h is lowered, and at this time the vehicle body 1 is moved to the front rail receiver 4a, the needle stroke lower receiver 4b,
It is transferred to the tact conveyor 4 by the side sill receiver 4c and the rear axle receiver 4d.

(6) Empty Telthanga 2 moves forward.

(7) The tact conveyor 4 moves forward.

This completes one section of the vehicle body transfer operation.

In this case, a particular problem is that there is often a misalignment of the vehicle body 1 in the vehicle width direction with respect to the side sill receiver 4c of the tact conveyor 4 when the vehicle body 1 is transferred from the conveyor hanger 2 to the lift table main body 3h. However, a V-groove attachment (3a) is used as a correction means.

Describing the operating situation based on Fig. 3, the lower end of the flange 1c of the side sill 1a of the car body 1 first moves downward vertically as shown by the dashed-dotted arrow.
It comes into contact with the slope 3s of the V-groove 3m at a (the position of the vehicle body 1 shown by the dashed line). Subsequently, as the Telthanger 2 descends, the weight of the vehicle body 1 is applied to the slope 3B, so the lower end 1c of the flange of the side sill la slides down the slope 3B as shown by the solid arrow until it reaches the bottom 3t of the valley, and the vehicle body 1 falls to a predetermined position. (the position of the vehicle body l indicated by the solid line).

However, if the deviation of the vehicle body l is large as shown by the dashed line in Fig. 4, the lower end IC of the flange of the side sill 1a may come down outside the groove 3m. It is possible to extend the length and increase the upper end width W of the V-groove 3m to make the enlarged width Wa, but the relationship between the flange height of the side sill and the upper surface of the V-groove attachment 3a with respect to the lower surface of the side sill la and the lower surface of the floor 1b. This is because the depth of the V-groove of 3m is limited.

If the upper end width W is expanded to an enlarged width wa, the slope 3sa becomes gentler, so that the flange lower end IC of the side sill 1a slides down the slope 3sa and stops midway due to a slight surface resistance.

In other words, with the conventional (groove attachment) 3a, the range of the amount of correction of the left and right position of the vehicle body 1 is small, and the accuracy of positioning in the width direction of the vehicle is lacking, but it is
On a so-called mixed flow line where car bodies with multiple specifications are produced on the same line, car bodies with different sill widths lw (Fig. 3) come in, but each time the groove attachments (groove attachments) 3a have to be replaced one by one. The problem was that it was unnecessarily complicated.

This invention was made by paying attention to such conventional problems, and it receives the lower parts of both sides in the width direction of the car body which is suspended on a hanger and descends, and also supports the lower part of the car body in the car width direction. A movable floating means is provided, means for pressing both sides of the vehicle body placed on the floating means from the outside to the inside, and a stopper for regulating the amount of movement of the floating means by the suppressing means. By providing means on the lift table main body, the vehicle body can be transferred to the correct position on the conveyor, thereby solving the above problem.

A first embodiment of the present invention will be described below with reference to FIGS. 5 to 9. Note that the same members as in the conventional example are denoted by the same symbols, and detailed explanation thereof will be omitted.

First, talking about the configuration, 3e is the table lifter 3.
5 is the lift table main body 3e.
A pair of floating means installed on the upper surface and receiving the lower end portions 1c of the flanges 1c of the left and right side sills at the lower sides of the vehicle body 1 in the vehicle width direction, that is, in this example, the floating means 3p, which are installed on the inner and outer sides of the vehicle body, and receiving the flange portions of the side sills in this example. A pusher plate 3q is a cylinder holding member installed inside the lift table main body 3e, and 31 is held by the holding member 3q to operate the pusher plate 3p. It is a cylinder that The pusher plate 3p is held at both ends by a guide assembly 3k installed on the upper surface of the lift table main body 3e so as to be able to slide in the vehicle width direction, and has blocks 3V at required positions on the lower surface, as shown in FIG. It is fixed. The dog block 3u is fitted into and fixed to the piston rod 3r, and the block 3v is tightened to the tip of the piston rod 3r by an angle 3n to be integrally connected to the piston rod 3r. In addition, as shown in FIG. 7.8, a movable stopper 7 and a fixed stopper 8 are provided on the lift table main body 3e. A limit switch 31w is attached to the stopper 7, and a limit switch 31n is attached to the stopper 8.

Describing the structure of the floatation means 5 based on FIG. 9, 5d is the height and inclination of the lift table main body 3e by tightening four fixed poles 5b from above and below. The lower plate 5u is attached to adjust the lower plate 5d, and a plurality of balls 5 are mounted on the upper surface of the lower plate 5d.
The upper plate 5a is attached to the coupling fitting 5 installed in the center so as to be slidable and rotatable in the vehicle width direction through C.
The lower end of the side sill flange 1 is fixed to the center of the upper surface of the U.
It is preferable to attach a cushioning material to the surface of the flat plate that receives c.

5m is a long groove carved in the shape of an ellipse in the vehicle width direction on both sides of the surface of the lower plate 5d to receive a plurality of balls 5c, and 5q is a long groove carved in the center to receive a plurality of balls 5c. The long holes 7-5e for sliding are circular thin holes carved in four locations on the back surface of the upper plate 5u in contrast to the long grooves 5m, and accommodate the balls 5C.

5B is a 3-shaped spring, both ends of which are locked to two spring holders 5h attached to one side of the lower surface of the lower plate 5d, and the spring receiver is connected to the coupling fitting 5 through a washer 52 at the center.
Holding K. 51 is a linear spring, lower plate 5d
Both ends are held by spring retainers 5f on the lower surface of both central ends of the connecting fitting 5, and the central part is installed to penetrate the lower end of the coupling fitting 5, and when the upper plate 511 is rotated, it is returned to its original position. That is, the 3-shaped spring 5B and the linear spring 51.
constitutes means for returning the upper plate 5u to its original position.

Next, the operation of this embodiment will be described.

After the vehicle body 1 is lowered by the lowering of the belt hanger 2, and the lower end IC of the flanges of both left and right side sills rests on the flat plate 5a, hydraulic pressure is sent to the cylinders 31 on both sides and the piston rod 3r is advanced inward, and the butcher plate 31) is
Since it is connected to the rod 3r, it also moves inward, but when the dog block 8-tsuku 3u comes into contact with the stopper 7, the movement of the rod 3r stops, and at the same time, the dog block 3u moves inward to the limit switch 3.
1w, and the supply of hydraulic pressure is cut off by the signal from the limit switch. In the stopped state, the distance between the tips of the pusher plates ap and ap on both sides is the required sill width of 1w.
The positions of the stopper 7 or 8 as a stopper means and the limit switch 31 are set in advance so that the position of the stopper 7 or 8 and the limit switch 31 are set in advance.

FIG. 7 shows the case of a large vehicle body +1 with a wide sill width of 1ww. Due to the operation of this rod 3r, the side sill 1c on the side that has deviated outward from its normal position is pushed outward by the butcher plate 3p, but the flat plate 5a can slide in the width direction of the vehicle body l, so it forms a figure 3 shape. By deforming and moving the spring 5B and the linear spring 51, the vehicle body 1 is guided to the normal position, that is, so that the lower end 1c of the side sill flange is directly above the side sill receiver 4c fixed to the tact conveyor 4. In this case, the side sill 1a that has shifted inward from the normal position is not pressed by the bushing plate ap, and the bushing plate 31) acts as a stopper. When the lift table main body 3e is lowered, the flange F end 1c of the side sill moves to the side sill receiver 4c installed on the tact conveyor 4, and in this way the vehicle body 1 can be correctly transferred to the tact conveyor 4. When the lift table main body 3e further descends and the flat plate 5a separates from the lower end of the flange 1c of the side sill, the upper plate 5u automatically returns to its original position due to the action of the 3-shaped spring 5s and the linear spring 31 returning to their original shapes. , and the cylinder 31 is activated by a signal from a limit switch (not shown)
Activate the hydraulic pressure to return the button plate 3p to its original position and restore it to its initial state.

Next, as shown in FIG. 8, for example, when the next car body l changes from the large car body 11 to the small car body 1B, the stopper 7 for wide width and the limit switch 31w are lowered by hydraulic operation of the cylinder 31i. If you send hydraulic pressure to the cylinder 31 while making sure that the dog block 3u does not come into contact with it,
When the dog block 3u comes into contact with the narrow-width stopper 8 fixed to the lift table main body 3e, the butt-shaft plates 3p and 3p stop, and the interval between the tips of these two butt-shaft plates 8p is reduced to a narrow sill width of 1wn. It can be operated as follows. Note that when the dog block 3u comes into contact with the stopper 8, the limit switch 31n is turned on, and the supply of hydraulic pressure to the cylinder 31 is cut off by the signal.

As shown above, this embodiment is provided with a floating means for receiving the side sill of the vehicle body and a pressurizing device that moves the side sill laterally from the left and right according to the width of the sill, and the positioning of the cylinder in the vehicle width direction is greatly improved. Stroke regulation is performed,
For vehicle models with different sol widths, it is possible to change the spacing between the bumper plates on both sides to match the sol width, so not only can you freely select the amount of correction in the left and right position of the car body, but you can also ensure the correct body position. What's more, the effect is that positioning can be easily performed on vehicle bodies with different sill widths. Also, especially as a floating means,
The upper and lower plates are moved relative to each other via balls, etc., and a means for returning to the original position using springs is also provided, so even a fairly heavy vehicle body can be moved or returned relatively easily. .

Next, a second embodiment of the present invention will be described. In the second embodiment, a gas bag is used as the floating means in the first embodiment.

Conventionally, when transferring the vehicle body 1 to the table lifter 3, the lower end IC of the side sill flange was received, but although the vehicle body 10 is heavy, the plate thickness of the side sill 1a is 0.7 to 0.8.
Since there is a problem that the side knob 1a may be deformed or the painted lower end lc of the side sill may be damaged, in the second embodiment, the support for the vehicle body l is placed on the floor 1b inside the side knob 1a. This problem was solved by using a gas bag as the floating means. Note that the suppressing means is the 7th and 8th part as in the first embodiment.
Use the one shown.

Hereinafter, FIG. 1O will be described. The same members as in the first embodiment are denoted by the same reference numerals, and detailed explanation thereof will be omitted.

6 is a gas bag, 6a is a lift table main body 312- The gas bag holder installed on the top surface of e is a stand.

Next, to describe the action, the telt hanger 2 descends and the car body 1
is transferred with the floor 1b placed on the gas bag 6 inside the side sill 1a. At this time, the gas bag 6 is placed in advance so that the lower end IC of the Zydo sill does not come into contact with the gas bag holder 6a.
The structure is designed and created. After the transfer, the side sill 1a is laterally pushed and moved by the pusher plate 3p in the same manner as in the first embodiment to position the vehicle body 1 at the correct position. The vehicle body 1 is further transferred to the tact conveyor 4 by the lowering of the belt hanger 2, and when the load is removed, the gas bag 6 returns to its old state by itself due to the gas pressure.

In the second embodiment, since the configuration is diagonal, the attachment of the car body holder is a gas bag, and the place where the car body is received is the floor, which prevents deformation of the side sill or scratches on the lower end of the painted side sill. It has the effect of preventing rust from occurring and being compatible with different car models. Additionally, since it uses a gas bag system, it has the advantage of not being affected by the shape of the vehicle's floor.

This invention has the structure as described above, and includes a floating means that supports the lower part of the vehicle body and can move in the width direction of the vehicle body, and a floating means that presses both sides of the vehicle body from the outside to the inside. Since the vehicle body is positioned at a specified location by combining a suppressing means that presses the vehicle body with a stopper means that restricts the amount of movement of the vehicle body, the amount by which the left and right position of the vehicle body can be corrected has not only been greatly expanded. This has the advantage that accurate positioning can be ensured, and it is possible to extremely easily deal with different car types and car bodies on a mixed flow line. Note that if a gas bag is used as the floating means, it is not affected by the shape of the floor of the vehicle body, and has the advantage of preventing damage to the side sills and peeling off of the paint.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an outline of a conventional vehicle body transfer device, FIG. 2 is a perspective view of the same, FIG. 3 is an explanatory diagram of a vehicle body being transferred to a table lifter, and FIG. The figures are: ■ An explanatory diagram of the shape of the groove of the groove attachment; FIG. 5 is a perspective view showing an overview of the first embodiment of this invention; and FIG. 6 is an overview of the operating principle of the first embodiment. 7 is an explanatory diagram showing the operation of sill width regulation for a wide vehicle body. FIG. 8 is an explanatory diagram showing the operation of sill width regulation for a narrow vehicle body.
Figure A is a plan view of the floating means; Figure 9B is a plan view of the floating means;
The sectional view taken along line nn in the figure, Figure 9C, is 1it-I in Figure 13.
FIG. 10, a sectional view taken along the line II, is an explanatory diagram of a second embodiment in which a gas bag is used as a floating means. 1...Car body 1a...Side sill 1b...Floor 1c...Lower end of side sill flange 2...
・・・・・・Hanger In this example, tilt hanger 3...
...Table lifter 3a...■Groove attachment 31...Cylinder 15- 3p...Button plate 3u...Dog block 31...Limit switch 4...Conveyor In this example, tact conveyor 4c...Side sill receiver 5...Floating means 5a...
・Flat plate 5u...Upper plate 5d...Lower plate 5C...Pole 5p...Bearing 5S...3-shaped spring 51...・
- Linear spring 6... Gas bag 7... Stopper 8... Stopper 16 - Fig. 5

Claims (2)

[Claims] (1) After receiving the car body suspended on the hanger with the lift table body of the table lifter, the lift table body is lowered to transfer the car body to the conveyor. Floating means that receive lower parts on both sides and are movable in the vehicle width direction of the vehicle body, and means that press both sides of the vehicle body placed on the floating means from the outside to the inside. and stopper means for regulating the amount of movement of the floating means by the suppressing means, provided on a lift table main body of a table lifter. (2) A patent claim characterized in that the floating means is composed of an upper plate, a lower plate, a ball and bearing interposed between the upper plate and the lower plate, and a means for returning the upper plate to its original position. A transfer device for an automatic motorcycle body according to item 1. 13+ The vehicle body transfer device according to claim 1, wherein the floating means is a gas bag.