JPH0520215B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Field of Application> 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. Conventionally, common assembly involves positioning and installing the underbody, which travels along the main baseline, on the main base, attaching jigs to hold the side bodies on both sides of the main baseline, and then running parallel to the main baseline. 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 cart moves between processes with the side body 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, and its configuration is as follows:
A conveying device for an assembly jig installed at a work assembly position where a work to be transferred along a main base line is positioned on the main base, wherein a side base is installed on the side of the main base line, A slide base is provided on this side base that moves forward and backward by a slide device in a direction perpendicular to the main baseline direction, and a slide base that is rotatable around an axis parallel to the main baseline direction by a rotation device is provided on this slide base. a swinging frame provided on the swinging frame; a guide rail for a jig cart installed on the swinging frame parallel to the main baseline direction so as to be movable up and down by a lifting device; a jig cart positioning lock device for positioning and locking the jig cart guided by the guide rail on the swing frame; a pair of left and right running rails arranged parallel to the main baseline at positions on both sides of the main base line for waiting the jig trolley; a driving device for pushing out and pulling in the jig trolley installed at one end of the running rail; A fixed rail for waiting for the jig cart installed at a rear position of the side base parallel to the main baseline direction, and a traveling rail advancing and retreating movement for moving the traveling rail back and forth so as to correspond to the guide rail and the fixed rail. It consists of a device.

<Function> The present invention allows a plurality of jig carts depending on the type of workpiece to be placed on standby on the travel rails on both sides of the swinging frame and on the fixed rail behind the swinging frame, and moves along the main base line to move the jig carts onto the main base. jig carts corresponding to the workpieces to be set on the main base are carried onto the swing frame from the plurality of standby positions, positioned and fixed, and the workpieces to be assembled to the workpieces on the main base are set on the jig carts. The swinging frame is rotated from the horizontal position to a required angle to raise it up, moved forward through the slide base toward the workpiece on the main base, and the workpiece on the swinging frame is connected to the workpiece on the main base. Spot weld using welding equipment.

<Examples> Examples of the present invention will be described below based on the drawings. FIG. 1 is a plan view showing an outline of the entire apparatus of the present invention, in which 1 is a main base line for transferring the underbody UB, and 2 is a main base for positioning and setting the underbody UB at an assembly position. 3 is an assembly jig conveying device according to the present invention;
They are arranged on the left and right with the main baseline 1 in the center. The schematic structure of this assembly jig transport device 3 is to move the side member SM to be assembled to the underbody UB on the main base 2 from the underbody.
A swinging frame part 4 that moves to the UB side and joins,
A first standby section 5 and a second standby section 6 have jig carts A and B waiting on the left and right with this swinging frame section 4 in the center, and a jig cart C is located behind the swinging frame section 4.
and a third standby section 7 for waiting.

The specific configuration of each of the above parts will be explained with reference to FIG. The swing frame section 4 has a rail 9 provided on a side base 8 in a direction perpendicular to the main base line 1, and a slide base 10 provided on the rail 9.
is guided by a slide device 15 so as to be movable forward and backward. A swing frame 11 is provided on the slide base 10 so as to be rotatable about 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 base line 1, and are installed so as to be movable up and down by a lifting device 13. Furthermore, on the swing frame 11, there are jig carts A, B,
A positioning and locking device 17 is provided for positioning and locking C at the lower end of the guide rail 12.

Next, the configurations of the first and second standby sections 5 and 6 will be explained with reference to FIGS. 3 to 5. Incidentally, since both the first and second standby parts 5 and 6 have the same mechanism, the first
This will be explained on the standby section 5 side. 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. When the swing frame 11 is in the horizontal position and the guide rail 12 is at the rising end, the traveling rail 21 that guides the jig cart A is connected to the guide rail 12 via the connecting fixed rail 29. They are arranged in series so that the jig carts A can be carried in and out of the swing frame 11.

The drive device 22 is composed of a motor with a speed reducer,
A pinion 26 provided on the rotating shaft is engaged with a rack 24 fixedly installed along the traveling rail 25, and is moved left and right by the forward and reverse rotation control of the motor. This drive device 22 includes each jig cart A, 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 standby section 7 behind the swing frame section 4
When the frames 19 of the first and second standby sections 5 and 6 are located at the rearward ends A and B (see FIG. 1), the fixed rail 27 corresponding to the traveling rail 21 in series is
are arranged parallel to the main base line 1, 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, if B is a jig truck equipped with jigs for the underbody UB and the corresponding side member SM positioned on the main baseline 2, the jig truck B is waiting in the second standby section 6. The swinging frame 11
The guide rail 12 is moved downward, and the positioning lock device 17 positions and fixes it. Thereafter, the side member SM is set on the jig cart B using the carrying device, and the swing frame 11 is moved to the rotating device 1.
Rotate 90 degrees using 6. Next, the slide base 10 is moved forward by the slide device 15,
Side member SM on swing frame 11 is joined to underbody UB and spot welded. After this spot welding, the side member SM is released, the slide base 10 is moved backward, and the swing frame 1 is moved back.
Return 1 to its original position. After that, the swing frame 11
Flip 90 degrees to bring it to a horizontal position.

If the side member SM to be assembled next is the same as the previous one, the side member SM is set in the jig cart B when it is turned over to the horizontal position, and the above-described 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 standby section 6, and the jig cart A in the first standby section 5 is used. The swinging frame 1
1 and perform the above operation.

When using the jig cart C, move the frame 19 of the second standby section 6 on the empty side to the rearward end, and move the jig cart C of the third standby section 7 onto the frame 19 using the driving device. 22 to move the frame 19 to the forward end again. On the other hand, the first standby section 5 moves the frame 19 to the backward end A while holding the jig cart A, and the third standby section 7 is now empty.
Frame 1 becomes empty after pushing out jig cart A.
9 to the forward end. And swing frame 1
1 to the frame 19 of the first standby section 5.
Pull it upward and push the jig cart C on the frame 19 of the second standby section 6 onto the swing 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 in three waiting areas, and the necessary jig carts are replaced by sliding movement within a plane. Since it is configured to perform this, it is possible to save space, and the number of jig carts can be reduced to the minimum necessary for the number of types of workpieces.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing the overall outline of the device of the present invention;
FIG. 2 is a perspective view showing a specific configuration of the apparatus of the present invention, FIG. 3 is a plan view of the first standby section, FIG. 4 is a front view thereof, and FIG. 5 is a side view thereof. DESCRIPTION OF SYMBOLS 1... Main baseline, 2... Main base, 3... Assembly jig conveyance device, 4... Swinging frame section, 5... First standby section, 6... Second standby section, 7
...Third standby section, 8...Side base, 10...
Slide base, 11... Swing frame, 12...
...Guide rail, 13... Lifting device, 15... Slide device, 16... Rotating device, 17... Positioning lock device, 18... Fixed rail, 19... Frame, 21... Traveling rail, 22... ...Drive device, 25...Running rail, 27...Fixed rail.

Claims (1)

[Claims] 1 A conveying device for an assembly jig installed at a work assembly position where a work to be transferred along a main base line is positioned on the main base, wherein a side base is installed on the side of the main base line. , a slide base that is moved forward and backward by a slide device in a direction perpendicular to the main baseline direction on this side base, and a slide base that is rotated by a rotation device about an axis parallel to the main baseline direction on this slide base. a swinging frame that is movable; a guide rail for a jig cart installed on the swinging frame in parallel with the main baseline direction and movable up and down by a lifting device;
a jig cart positioning and locking device for positioning and locking a jig cart installed on the swing frame and guided by the guide rail to the swing frame; and a positioning lock device for positioning the jig cart installed on the swing frame and guided by the guide rail; A pair of left and right traveling rails are arranged parallel to the main baseline on both sides of the swing frame and hold the jig cart on standby, and the pushing and pulling of the jig cart installed at one end of the rails is supported. a fixed rail for waiting for the jig cart installed at a rear position of the side base in parallel with the main baseline direction, and the traveling rail is configured to correspond to the guide rail and the fixed rail. An assembly jig transport device comprising a traveling rail advancement/retraction moving device for advancing and retracting.