JPS6347027A - Assembling jig conveyor - Google Patents

Abstract

PURPOSE:To aim at the promotion of space saving, by installing a main base, a side base, a slide base, a rocking frame, a guide rail, a positioning locking device and a driver for a jig truck, and a fixed rail, a traveling rail plus a retractable mover. CONSTITUTION:An assembling jig conveyor 3 consists of a rocking frame part 4 moving a side member SM to the side of an underbody UB, first and second stand-by parts 5 and 6 making both jig trucks A and B stand by, and a third stand-by part 7 making a jig truck C stand by. And, the jig truck B of the second stand-by part 6 is transferred onto a rocking frame 11, and a guiding rail 12 is made to go down, locking it. Afterward, the side member SM is set onto the jig truck B, and the rocking frame 11 is rotated as far as 90 deg. by a turning gear 16, making it stand erect. Next, a slide base 10 is advanced forward by a slide unit 15, and the side member SM is welded to the underbody UB. Therefore, space saving is well promoted by this device.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a workpiece assembly jig conveyance device.

<Conventional Technology> Automobile manufacturing plants employ parallel production in which multiple vehicle models are assembled on one assembly line. Conventional general assembly involves positioning and installing the underbody, which travels along the main base line, on the main base soil, and attaching jigs to hold the side bodies on both sides of the main base line, and then running parallel to the main base line. A moving jig cart is arranged, and the method of transporting this jig cart is to set the side body on the jig cart in the pre-process, run the jig cart to the post-process, and transfer it to the main base at the assembly position. It was to be assembled to the upper underbody.

<Problems to be Solved by the Invention> In the above-mentioned conventional method, it is necessary to install a traveling rail for transporting the jig cart from the front process to the rear process, which requires a large space. In addition, since the jig carts travel between processes with the side bodies set, a large number of jig carts are required depending on the number of vehicle models produced.

Means for Solving the Problems> The present invention provides an assembly jig conveying device that solves the above-mentioned conventional problems. This is a transportation device for an assembly jig installed at a workpiece assembly position positioned on a main base, wherein a site base is installed on the side of the main base line, and a site base is installed on the side base in the direction of the main base line. a slide base that moves forward and backward in orthogonal directions by a slide device; a swinging frame provided on the slide base so as to be rotatable by a rotation device about an axis parallel to the main baseline direction; A guide rail for a jig trolley installed parallel to the main baseline direction and movable up and down by a lifting device, and a jig trolley installed on the swing frame and guided by the guide rail on the swing frame. A positioning locking device of a jig cart that performs positioning locking corresponds to a raised position of the guide rail when the swing frame is in a horizontal state,
A pair of left and right running rails are arranged parallel to the main baseline on both sides of the swing frame and hold the jig cart on standby, and a drive device installed at one end of the rails for pushing out and pulling in the jig cart. and a fixed rail for waiting for the jig cart installed at a rear position of the site base parallel to the main baseline direction, and a running rail for moving the traveling rail forward and backward so as to correspond to the guide rail and the fixed rail. It consists of a rail advance/retreat moving device.

<Operation> In the present invention, a plurality of jig carts corresponding to the types of workpieces are placed on standby on the traveling rails on both sides of the swinging frame and on the fixed rails behind the swinging frame, and the main base line is moved to move the jig carts to the main base. A jig cart corresponding to the work to be set above is carried onto the swing frame from the plurality of standby positions, positioned and fixed, and a work to be assembled to the work on the main base is set on this jig cart. The swinging frame is rotated from the horizontal position to the required angle to raise it up, moved forward through the slide base in the direction of the workpiece on the main base, and the workpiece on the swinging frame is connected to the workpiece on the main base. Spot welding is performed using spot welding equipment.

Embodiments Hereinafter, embodiments of the present invention will be described based on the drawings. FIG. 1 is a plan view showing an overview of the entire apparatus of the present invention, with reference numeral 1 a main base line for transporting the underbody UB, and 2 a main base line for positioning and setting the underbody UB at an assembly position. Reference numeral 3 denotes an assembly jig conveying device according to the present invention, which is arranged on the left and right sides with the main baseline 1 in the center. The assembly jig conveying device 3 has a schematic structure including a swinging frame section 4 that moves the side member SM to be assembled to the underbody UB on the main base 2 toward the underbody UB side and coupling it thereto, and The first special equipment section 5 has jig carts A and B waiting on the left and right with 4 in the center.
It also includes a second special equipment section 6 and a third special equipment section 7 in which a jig cart C is placed on standby behind the swing frame section 4.

The specific configuration of each of the above parts will be explained with reference to FIG. In the swing frame section 4, a rail 9 is provided on a side base 8 in a direction perpendicular to the main baseline 1, and a slide base 10 is guided on the rail 9 by a slide device 15 so as to be movable forward and backward. Said slide base 1
A swing frame 11 is provided on the main base line 1 so as to be rotatable around an axis parallel to the main base line 1, and is rotated by a rotation device 16 at an angle of 90 degrees from a horizontal position.

Guide rails 12 for jig carts A, B, and C are provided on this swing frame 11 in parallel with the main baseline 1, and are installed so as to be movable up and down by a lifting device 13.

Further, on the swing frame 11, there is provided a positioning and locking device (7) for positioning and locking the jig carts A, B, and C carried onto the guide rail 12 at the lower end of the guide rail 12.

Next, the first. The configuration of the second special equipment sections 5 and 6 will be explained with reference to FIGS. 3 to 5. In addition, the first and second special equipment sections 5 and 6
Since both have the same mechanism, the first special equipment section 5 side will be explained. A frame 19 is guided on a fixed rail 18 perpendicular to the main baseline 1 by an actuator 20 so as to be movable forward and backward. On this frame 19, a running rail 21 for guiding a jig trolley A and a running rail 25 for guiding a drive device 22 for pushing out and pulling in the jig trolley A, which will be described later, are provided in parallel with the main base line 1. ing. Traveling rail 21 that guides the jig cart A
, the swing frame II is in the horizontal position and the guide rail 1 is in the horizontal position.
2 is located at the rising end, the connecting fixed rail 29
It is arranged in series with the guide rail 12 via the guide rail 12 so as to carry the jig cart A onto and from the swing frame 11.

The drive device 22 is composed of a motor with a speed reducer, and a pinion 26 provided on its rotating shaft is engaged with a rack 24 fixedly installed along a running rail 25, and is moved left and right by controlling forward and reverse rotation of the motor. . This drive device 22 includes respective jig carts A and B.

It is provided with a connecting device 23 that connects and disconnects the connecting tool 28 provided at both ends of C.

Next, the third special equipment section 7 behind the swinging frame section 4 is connected to the first.
The frame 19 of the second special equipment parts 5 and 6 is
(see figure), move the fixed rail 27 corresponding to the traveling rail 21 in series to the main baseline 1 (l!
: The jig carts are arranged in parallel, and any of the jig carts C, A, and B can be transferred between the fixed rail 27 and the running rail 21.

The operation of the above configuration will be explained. In Fig. 2, the underbody U is positioned on the main baseline 2.
If B is a jig cart equipped with a jig for side member SM corresponding to B, then jig cart B waiting in the second special equipment section 6
is carried onto the swing frame 11, the guide rail 12 is moved downward, and the J stiffness is positioned and fixed to the positioning lock device 17. Thereafter, the side member frame is set on the jig cart B using the carrying device, and the swing frame 11 is rotated 90 degrees by the rotating device 16 to raise it up. Next, the slide base lO is moved forward by the slide device 15, and the swing frame 11 is moved forward.
The upper side member SM is joined to the underbody UB and spot welded. After this spot welding, the side member SM is opened, the slide base 10 is moved backward, and the swing frame 11 is returned to its original position. Thereafter, the swing frame 11 is inverted 90 degrees to a horizontal position.

If the side member SM to be assembled next is the same as the previous one,
At the time when the side member SM is turned over to the horizontal position, the side member SM is set on the jig cart B, and the above operation is repeated.

When the side member SM to be assembled next is different from the previous one and the jig cart A is used, the jig cart B on the swing frame 11 is pulled into the second special equipment section 6, and the jig in the first special equipment section 5 is The truck A is pushed out onto the swing frame 11 and the above operation is performed.

In addition, when using the jig cart C, move the frame 19 of the second special equipment section 6 on the empty side to the rear end opening, and
The jig cart C of the special equipment section 7 is mounted on the frame 19 by the drive device 22.
to move the frame 19 to the forward end again. On the other hand, the first special equipment section 5 moved the frame 19 to the backward end A while holding the jig cart A, and pushed the jig cart A into the empty third special equipment section 7, which became empty. frame 1
9 to the forward end. Then, the jig cart B on the swinging frame 11 is pulled out onto the frame 19 of the first special equipment section 5, and the jig cart C on the frame 19 of the second special equipment section 6 is pushed out onto the swinging frame 11. Incidentally, when the jig cart A is on the swing frame 11, the jig cart C is transported onto the swing frame 11 by the reverse path described above.

<Effects of the Invention> As described above, according to the present invention, a plurality of jig carts to be set on a swinging frame are made to stand by at three special parts, and the necessary jig carts are moved in a square plane in a plane. Since it is configured to be replaced, it is possible to save space and to keep the number of jig carts to the minimum necessary for the number of types of workpieces.

[Brief explanation of drawings]

FIG. 1 is a plan view showing the overall outline of the device of the present invention, FIG. 2 is a perspective view showing the specific configuration of the device of the present invention, and FIG.
A plan view of the special equipment section, FIG. 4 is a front view thereof, and FIG. 5 is a side view thereof. 1... Main bass line, 2... Main bass,
3... Assembly jig transport device, 4... Swinging frame section,
5... First special machine part, 6... Second special machine part, 7... Third special machine part, 8... Side base, IO... Slide base, 11... Rocking Frame, 12...Guide rail. 13... Lifting device, J5... Slide device, 16.
...Rotating device, 17...Positioning locking device, 18.
... Fixed rail, 19... Frame, 2I... Running rail, 22... Drive device, 25... Running rail, 27... Fixed rail.

Claims (1)

[Claims] A conveyance device for an assembly jig installed at a workpiece assembly position where a workpiece to be transferred along a main baseline is positioned on the main base, wherein a side base is installed on the side of the main baseline, A slide base is provided on the side base that moves forward and backward by a slide device in a direction perpendicular to the main baseline direction, and a rocker is provided on the slide base so as to be rotatable around an axis parallel to the main baseline direction by a rotation device. a moving frame, a guide rail for a jig cart installed on the swing frame parallel to the main baseline direction and movable up and down by a lifting device, and a guide rail installed on the swing frame and mounted on the guide rail. A jig cart positioning and locking device that positions and locks the guided jig cart to the swing frame, and a jig cart positioning and locking device that positions and locks the guided jig cart to the swing frame; A pair of left and right running rails arranged parallel to the baseline for waiting the jig cart, a driving device for pushing out and pulling in the jig cart installed at one end of the running rails, and a drive device installed at the rear of the side base. An assembly comprising a fixed rail for waiting for the jig cart installed parallel to the main baseline direction, and a traveling rail advancement/retraction moving device for moving the traveling rail forward and backward so as to correspond to the guide rail and the fixed rail. Jig transport device.