JPS5838351B2 - automobile assembly equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an assembly device for assembling mainly a floor block and left and right side blocks in sheet metal assembly of an automobile.

Automobile bodies are manufactured by sheet metal assembly.

The main ones are floor blocks and side blocks.

Assembling these floor blocks, side blocks, etc. requires many jigs, and it is also necessary to make these jigs make complicated movements.

Conventional jigs for assembling automobile sheet metal have been designed to expand the side frame by about 15° to 20° from the upright position. The block was moved from an appropriate position above the block, then lowered to the approximate position and then set properly, and this was mostly done by hand.

For this reason, work must be done carefully, work efficiency is poor, and there is also a risk of a set failure.If assembly is continued with such a set failure, there is a problem that will result in a large loss.

In addition, when automating the setting of side blocks in such a jig, a conveyance device and a lowering device provided above are required, resulting in problems such as a complicated structure.

This invention simplifies the configuration of the loading device, simplifies the work, and enables automatic manufacturing by changing the loading of the side blocks, which were conventionally suspended from above, to be loaded laterally from the outside. The company provides automobile assembly equipment.

Next, one embodiment of the present invention will be explained with reference to the drawings. First, Fig. 1 shows the body of an automobile assembled by the apparatus of the present invention, in which 1 is a floor block, 2 is a right side block, and 3 is a left side block. A side block 2.3 is positioned outside the floor block 1, and these are joined by spot welding 4.

FIG. 2 shows a part of the structure in cross section, showing a rocker panel 6 at the bottom of the side block 3 being joined to the floor side rail 5 at the bottom of the floor block 1 by spot welding 4.

Next, the lower frame 7 and the side frame 8 are shown in FIG. 3 showing a side view, FIG. 4 showing a cross section of the right half taken along the line ■-■ in FIG. 3, and FIG. The assembly jig 9 having the following will be explained.

The lower frame 7 is table-shaped, and L-shaped brackets 11 are mounted facing each other on both upper sides of a groove 10 formed in a part thereof, and a rotating arm 12 is attached to a rotating pin 13 inside the bracket. It is rotatably supported by.

In this embodiment, there are two sets of rotating arms 12 on one side of the lower frame 7, and the side frame 8 is suspended between these two sets of rotating arms 12.

Side block regulators 14 to 20 are attached to the side frame 8 at different heights depending on the shape of the side block 3 (2).

These side block restrictors 14 to 20 all have the same structure, and as shown in FIG.
3, and by operating the cylinder 21, the side block 3 is gripped and released at the tip of the link mechanism 23.

Inside the groove 10 of the lower frame 7 two side frame rotation cylinders 24, 25 are arranged.

These side frame rotation cylinders 24 and 25 rotate the side frames 8 provided on both sides of the lower frame 7.

Therefore these side frame pivot cylinders 24,25
are attached in the opposite direction, and a cylinder knuckle 27 attached to the tip of the piston rod 26 of the side frame rotation cylinder 24 is pivotally connected to a rotation lever 29 integrated with the rotation arm 12 by a pin 28. ing.

A cylinder bracket 30 provided at the base of the other side frame rotation cylinder 25 is integrally attached to the lower frame 7.

Reference numerals 31 to 34 are floor block regulating devices, which are pillars 35, 36, 37, and 3 erected on the lower frame 7, respectively.
It is attached to the upper part of the floor block 8 and grips a predetermined position of the floor block 1 with a structure substantially similar to that of the side block restrictor described above.

As shown in FIGS. 3 and 4, a plurality of rail lifting cylinders 39 are attached to the lower frame I.
A rail 41 is attached to the upper end of a piston rod 40 that enters and exits from this rail elevating cylinder 39.

By operating the rail lifting cylinder 39, the rail 41 can be raised or lowered by the height h shown in FIG.

A floor block carrier 42 is mounted on the rails 41 .

Next, the carrying device 43 will be explained with reference to FIG. 6. Reference numeral 44 is a base, and four pairs of L-shaped brackets 45, two each facing each other, are attached to the upper part of the base 44. A pair of left and right links 46 and 47 are rotatably supported at their bases.

The base of the link 46 is swung by a drive shaft 48 as will be described later, and the link 47 is also swung around a pin 49 at the base.

The drive shaft 48 is rotatably inserted through a hole in the bracket 45, and the base of a link 46 is integrally fixed to both ends of the drive shaft 48.

A sprocket 50 is attached to the drive shaft 48, and an endless chain 54 is connected between the sprocket 50 and a sprocket 53 attached to an output shaft 52 of a drive motor 51 placed on the base 44. It is hung.

As shown in the figure, one pair of links 46, 47 are provided close to each other on both sides of the base 44, and a link plate 55 is pivotally connected to the approximately central and upper end portions of these links 46, 47 by pins 56. has been done.

As a result, when link 46 is rotated by drive shaft 48, link 47 is also rotated at the same time.

Further, at appropriate positions on the left and right sides of the base 44, carry-in position stoppers 57 are provided on the link 46 side, and grip position stoppers 58 are provided on the link 47 side, so as to regulate the tilting angle of the links 46 and 47. There is.

An upper end frame 59 is spanned over the upper end portions of the links 46, 47, and swings with the movement of the links 46, 47.

This upper end frame 59 includes a cylinder 60 and a guide device 6.
1 is attached so that the gripping device 62 can be freely raised and lowered.

A plurality of side block restrictors 63 are attached to the gripping device 62, and the side blocks 3 are gripped by the operation of the cylinder 64.

In this device configured in this way, the carrying device 43
As shown in FIG. 7, is arranged outside the side frame 8 of the assembly jig 9, and on the opposite side is arranged a pedestal 65 on which the completed side blocks 2 and 3 are set. There is.

The carrying device 43 swings laterally between the assembly jig 9 side and the pedestal 65 side as shown in the figure, and the side blocks 2,
It is designed to move 3.

Next, the operation of this device will be explained. First, before the start of the process, the side frame 8 of the assembly jig 9 is expanded to a horizontal position, and all the restrictors are in an open state.

The rail 42 is at the rising end, and the carry-in device 43 is stopped at a position where it has fallen down to the side of the pedestal 65, gripping the side blocks 2 and 3.

In addition, a plurality of floor block carriers 42 are fixedly connected at a constant pitch, and the plurality of floor block carriers 42 move forward (from the left to the right in FIG. 3), descend, retreat, and rise as a whole. Repeat.

In this case, the lowering and raising are effected together with the rails 41, and the advancing and retracting are effected by separate suitable drives (not shown).

The assembled floor block 1 is placed on the floor block carrier 42, enters the assembly jig 9 on the rail 41 from left to right in FIG. 3, and stops when it reaches a predetermined position. .

The rail 41 descends, and before reaching the lowest position, the floor block 1 is gripped by the floor block regulators 31 to 34,
Take the prescribed posture.

The loading device 43, which was waiting while gripping the side blocks 2 and 3, is moved to the link 46.4 by the operation of the drive motor 51.
7 swings laterally and stops above the side frame 8 of the assembly jig 9, and the side blocks 2 and 3
2 and is vertically lowered to be gripped by the side block restrictors 14 to 20 of the side frame 8.

The carry-in device 43 that has carried in the side blocks 2 and 3 moves its gripping device 62 vertically upward by the cylinder 60, operates the drive motor 51, and swings outward toward the pedestal 65 side.

Next, the side frame 8 rotates from the horizontal position to the upright position,
The side blocks 2 and 3 are set at the assembly position with the floor block 1.

Next, the floor block 1 and side blocks 2 and 3 are welded by automatic or manual operation.

After the assembly by welding is completed, all the restraining tools of the assembly jig 9 release the body, which is the object to be gripped, and then the side frame 8 is opened to a horizontal position on the side.

Along with the rails 41, the floor block conveyor 42
rises, and when it has risen to a predetermined height, the assembled body is placed on the floor block carrier 42, and the floor block carrier 42, on which the body is roughly placed, rises to the rising end together with the rails 41. do.

Thereafter, the floor block conveyor 42 moves to the front of the process, which is the right side in FIG. 3, and the body moves to the next process, completing one cycle. Although an example of assembling parts 2 and 3 has been shown, this device can also be adapted to assemble other parts by adding another restrictor.

Since this invention is configured as described above, the side blocks 2 and 3, which were conventionally suspended from above, can be carried in from the side, the carrying device has a simple structure, and the work is performed automatically. There are advantages to being able to do so.

Furthermore, compared to the conventional method, there is no fear that the side blocks 2 and 3 will be set incorrectly, and the side blocks 2 and 3 can be set more reliably.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the body of an automobile assembled by the apparatus of the present invention, FIG. 2 is a sectional view taken along line 1--2 in FIG. 1, and FIG. 3 is a side view of the assembly jig according to the present invention.
Figure 4 is a cross-sectional view of the right half of Figure 3 along the ■-IV line;
5 is a perspective view of FIG. 3, FIG. 6 is a perspective view of the loading device according to the present invention, and FIG. 7 is a front view showing the positional relationship between the assembly jig and the loading device and the operating state of the loading device. . 1... Floor block, 2, 3... Side block, 7... Lower frame, 8...
... Side frame, 9... Assembly jig, 12.
... Rotating arm, 14, 15, 16, 17, 18
, 19, 20, 63... Side block restrictor, 24, 25... Side frame rotation cylinder,
31, 32, 33, 34...7o ablock restrictor, 39...Rail lifting cylinder, 41...
...Rail, 42...Floor block carrier, 43...Carry-in device, 44...Base, 46,47...Link, 48.・・・・・・
・Drive shaft, 51... Drive motor, 62.
...Gripping device.

Claims (1)

[Claims] 1. A lower frame to which a plurality of floor block regulating devices for positioning the floor blocks are attached, and a plurality of side block regulating devices for positioning the side blocks are attached to predetermined locations on the side of the lower frame, approximately centered on the lower end. The side block is made up of a side frame that is rotatably installed from a horizontal position to an upright position, and a link mechanism, and is installed on the outside of the side of the side frame and is held in an open state by swinging laterally. An automobile assembly device comprising: a carrying device suspended between the side frames.