JPH09301236A - Automobile main body assembling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the movement of a positioning jig between processes, reduce the equipment cost, and perform a highly precise assembling by setting a side member by a preset device, holding and moving the set position by a holding device, and positioning it by a positioning jig in temporary assembling process. SOLUTION: A preset process side member preset device is arranged, lateral side members are set on the lateral side parts of an underbody in the raised state. The set state is held by a set position holding device, and the set position holding device is moved between preset process and temporary assembling process by rails 8, 8 provided in parallel to each other along each process center. In the temporary assembling process, side member positioning jigs 20, 20 for precisely positioning the side members sent from the preset process to the underbody are arranged bisymmetrically to the line. Since a highly precise positioning is performed only in a necessary stage, the cost for equipment can be saved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for assembling an automobile main body.

[0002]

2. Description of the Related Art Generally, for example, in the process of assembling a main body of a one-box car, for example, Japanese Unexamined Patent Publication No. 2-144.
As disclosed in Japanese Patent No. 267, side members are set up on the left and right sides of an underbody placed on an underbody setting jig (preset process), and the underbody is maintained while maintaining the set state. The procedure of moving the set jig to the temporary attaching step, temporarily attaching the side member to the underbody by spot welding or the like in the temporary attaching step, and then sending it to the additional punching step to completely integrate the two is taken. .

In such a main body assembling process, a side member positioning jig for positioning the side member with respect to the underbody is used, but the side member is conventionally disclosed as disclosed in the publication. A positioning jig is movably provided between the preset process and the temporary mounting process to position the side member with respect to the underbody in the preset process.
While maintaining this positioning state, the side member positioning jig is sent together with the underbody setting jig to the temporary mounting step, and after the temporary mounting is completed, the side member positioning jig is removed and returned to the preset step.

[0004]

As described above, conventionally, the side member positioning jig, which is a relatively large and heavy device, is moved between the preset step and the temporary attaching step. Means needed,
Further, since it is necessary to perform positioning at both positions of the preset process and the temporary mounting process, there is a problem in that the positioning accuracy varies between the processes, resulting in an error in assembling the side member.

The present invention has been made in view of the above conventional problems, and does not require movement of the side member positioning jig between steps. As a result, equipment cost can be reduced and assembly can be performed with higher accuracy than before. It is an object of the present invention to provide a main body assembling apparatus that can be performed.

[0006]

Therefore, the assembling apparatus according to the first aspect of the present invention includes a preset step of setting the side member to the underbody and a temporary attaching step of temporarily attaching the side member to the underbody. An apparatus used in a main body assembling step, wherein an underbody is placed on the underbody setting jig for moving from the preset step to the temporary attaching step, and an underbody set jig for the underbody in the preset step. A side member presetting device for setting the side member, and a set position holding device for holding the setting position of the side member with respect to the underbody and moving together with the underbody setting jig from the preset step to the temporary attaching step. In the temporary attaching step, side men Characterized in that a structure in which a side member positioning jig for positioning the over against underbody.

According to this assembling apparatus, the side member positioning jig positions the side member only in the temporary mounting step, and does not move to the preset step as in the conventional case. Therefore, the position of the side member positioning jig, and eventually the position of the side member, is stable, and temporary attachment can be performed with higher accuracy than before.

The positioning of the side member with respect to the underbody in the preset step and the positioning during the transportation up to the temporary attachment step are roughly performed by the side member preset device and the set position holding device. As described above, the side member is conveyed to the temporary mounting step in a state of being roughly positioned in the preset step, and in the temporary mounting step, the side member is positioned with high accuracy by the side member positioning jig immediately before the temporary mounting.

An assembling apparatus according to a second aspect is the main body assembling apparatus according to the first aspect, wherein the side member presetting device is provided with a folding device for folding a bending edge provided on the underbody. In a set state of the side member, the bending device is configured to bend the bending edge so as to sandwich an end portion of the side member to prevent the side member from falling.

According to this assembling device, the side member set up in the rising state can be surely prevented from falling.
If the side member positioning jig is used to position the side member in the preset process as in the conventional case, the side member does not fall down. The side member is set to the underbody by the member presetting device, and this set state is held by the set position holding device. The set position holding device moves to the temporary mounting process together with the underbody setting jig, and holds the side member set position until the side member positioning jig is positioned. It is necessary to avoid interference between the position holding device and the side member positioning jig.For this reason, this set position holding device should be placed at a position that does not interfere with the side member positioning jig, for example, a position where the side member is received from below. Need to be placed.

As described above, since the side member set position holding device needs to avoid interference with the side member positioning jig in the temporary attachment process, it cannot be positioned at a position where the side member can be surely prevented from falling down. There may be cases where the collapse is a problem due to factors such as the shape of the member. In such a case, according to the above configuration, when the side member is set, the bending device bends the bending edge provided in advance on the side member and sandwiches the end portion of the side member, so that the side member falls down. Is reliably prevented.

An assembling apparatus according to a third aspect is the main body assembling apparatus according to the first aspect, wherein the set position holding device pushes the rocker panel portion of the side member obliquely upward to cause the side member to move. It is characterized in that it is configured to hold the set position with respect to the underbody.

According to this assembling apparatus, in the presetting step as described above, the side member is not positioned by the side member positioning jig as in the conventional case, but the set position is held by the set position holding device. The underbody and the set side member are sent to the temporary mounting step by moving the underbody setting jig and the set position holding device to the temporary mounting step as they are. Since the side member positioning jig is arranged in the temporary mounting step, it is necessary to avoid interference between the set position holding device and the side member positioning jig in the temporary mounting step. For this reason, the set position holding device is configured to receive the rocker panel portion of the side member, that is, the lower portion thereof from below and press diagonally upward, thereby avoiding interference with the side member positioning jig in the temporary attaching process, The set position of the side member with respect to the underbody can be reliably retained.

An assembling apparatus according to a fourth aspect is the main body assembling apparatus according to the first aspect, wherein the set position holding device is movable independently of the underbody setting jig and the underbody. It is characterized in that a connecting device is engaged with the setting jig so as to be movable together with the underbody.

According to this assembling device, the set position holding device moves integrally with the underbody setting jig through the connecting device to the temporary attaching step, so that an independent moving means for that purpose is not required. The moving means of the underbody setting jig can be used, and thus the structure of the assembling apparatus can be simplified.

Further, since the set position holding device can be moved independently of the underbody setting jig when the connecting device is released, the side members are positioned by the side member positioning jig in the temporary attaching process. After that, by releasing this connecting device, the set position holding device can be separated from the underbody setting jig and returned to the preset process.

An assembling apparatus according to a fifth aspect is the assembling apparatus according to the first aspect, wherein the side member positioning jig is attached to a side gate that moves in a direction orthogonal to the body conveying direction, and is temporarily attached. It is characterized in that it is configured to approach or separate from the side member carried into the process.

According to this assembly apparatus, the side member positioning jig is moved by the movement of the side gate, that is, the side member is moved toward or away from the side member. When the underbody and the preset side member are loaded into the temporary mounting process, the side member positioning jig is set to the positioning position (position for positioning the side member) by advancing the side gate. After the temporary attachment is completed, the side member positioning jig is retracted from the positioning position by retracting the side gate, and the main body after the temporary attachment can be carried out to the next step (additional hitting step).

An assembling apparatus according to a sixth aspect of the present invention is the main body assembling apparatus according to the fifth aspect, wherein a plurality of side member positioning jigs are prepared, and the side member locating jigs are arranged side by side along the body conveying direction and are integrally formed in the same direction. It is characterized in that the side member positioning jig, which is movably provided to the side gate, can be replaced with respect to the side gate by moving in the same direction.

According to this assembling apparatus, the side member positioning jig can be exchanged according to the vehicle type, and the versatility of the assembling apparatus can be enhanced. The side gate can be moved in the direction orthogonal to the body transport direction, and multiple types of side member positioning jigs can be moved integrally in the same direction along the body transport direction. As a means of moving
By using the pinion mechanism, the plurality of side member positioning means can be accurately moved by a single moving means, which can simplify the structure of the assembly apparatus and reduce the equipment cost.

It should be noted that a plurality of side member positioning jigs to be prepared may be set to a plurality of types according to the type of vehicle, or a plurality of the same type may be prepared. With this configuration, when one of the side member positioning jigs needs to be replaced due to a failure or the like, it can be quickly dealt with, so that the assembly line stop time can be minimized.

An assembling apparatus according to a seventh aspect is the main body assembling apparatus according to the sixth aspect, wherein the side member positioning jig is a roller for carrying the side member positioning jig provided on the side gate. It is characterized in that it is positioned in the body width direction and the body height direction with respect to the side gate.

According to this assembling apparatus, the roller as the conveying means of the side member positioning jig for the side gate can also have a positioning function, and in this respect, the structure of the assembling apparatus can be simplified, In addition, it is possible to avoid soaring equipment costs.

As described above, when a plurality of types of side member positioning jigs are prepared according to the type of vehicle and the jigs are arbitrarily selected and mounted on the side gates, the side members are positioned relative to the side gates. It is necessary to move the positioning jig along the body carrying direction, and it is effective to provide a roller on the side gate as a carrying means for that purpose.

By arranging a roller for smoothly carrying the side member positioning means into and out of the side gate at an appropriate position with high accuracy, the position of the side member positioning means in the body width direction and the body can be determined by this roller. The position in the height direction can be accurately positioned. According to this, without providing a separate positioning means,
Smooth movement and positioning of the side member positioning jig with respect to the side gate can be realized, without complicating the structure of the assembly apparatus and avoiding a rise in equipment cost.

Regarding the positioning of the side member positioning jig in the body carrying direction (longitudinal direction), it is necessary to move a plurality of side member positioning jigs in the body carrying direction. To the extent that it does not hinder the replacement of jigs,
It may be configured such that it can be moved forward and backward in the moving direction (body transport direction).

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to FIGS.
This will be described with reference to FIG. 1 to 4 show an assembling step of the main body MB among the assembling steps of the automobile, and the steps are divided into a preset step, a temporary attaching step, and an additional hitting step. Each step proceeds from the left side to the right side in the figure. In the presetting process, the left and right side members are set up on both left and right sides of the underbody in a standing manner.In the temporary mounting process, both set side members are positioned with respect to the underbody, and the roof panel is positioned. After that, the work of temporarily attaching by spot welding at appropriate places is performed.

In the additional striking step, the number of spot welding spots is increased to completely join the underbody, the left and right side panels and the roof panel. The spot welding in the tacking step and the additional striking step are performed by conventionally known welding robots arranged at appropriate positions,
Since this point does not require any particular change, its explanation and illustration are omitted. Further, since the additional hitting step does not particularly need to be changed, its explanation and illustration are omitted.

First, as shown in FIG. 7, the underbody setting jig 1 includes rails 3 laid on the process surface plate 2.
3 is supported so as to be movable between the respective steps, and the movement is performed by a conventionally known feeding device 14. An underbody UB (see FIG.
(See) is placed in a positioned state.

1 and 2 show a state in which the underbody setting jig 1 is on standby in the preset process. To the left and right of this preset process (up and down in Fig. 1),
Side member presetting devices 5, 5 for setting the side members SM, SM in a standing shape on both left and right sides of the underbody UB are arranged.

This side member presetting device 5, 5
The left and right sides have the same configuration, and the details of the side member presetting device 5 on the right side in the process proceeding direction are shown in FIG. As shown, this side member presetting device 5
Is a pedestal 5f and a process advancing direction (a direction orthogonal to the paper surface, via the linear slide mechanism 5g on the upper surface of the pedestal 5f,
A frame 5a that moves in a direction orthogonal to the body longitudinal direction (hereinafter also referred to as a lateral direction in the drawing, hereinafter also referred to as a body width direction) is provided, and a receiving frame 5b is supported on an upper portion of the frame 5a. The movement of the frame 5a is performed by the cylinder 5e. The receiving frame 5b is a fulcrum 5c
Can be rotated between a horizontal position and a vertical position, and this rotation operation is performed by the cylinder 5d. In the figure, the frame 5a moves forward (underbody set jig 1
The solid line indicates that the receiving frame 5b is rotated to the vertical position.

A clamp arm 5i for supporting the lower portion of the side member SM in a receiving shape is provided at the lower portion of the receiving frame 5b. This clamp arm 5
The side member SM is grasped by i and other grasping tools (not shown) so as not to fall when the side member SM is positioned in a vertical posture described later.

According to the both side member presetting devices 5 and 5 thus constructed, the frame 5a is retracted and the receiving frame 5b is positioned in the horizontal position as shown by the two-dot chain line in the figure, separately. The side member SM is substantially horizontal on the receiving frame 5b by the installed side member supply device (posture shown by (A) in the figure).
Placed in. In the figure, 6 and 6 indicate hangers of the side member supply device, and 5h indicates an auxiliary pedestal.

In this way, both side members SM, S
When M is supplied, the cylinder 5d first ejects and the receiving frame 5b rotates from the horizontal position to the vertical position,
As a result, the side frame SM placed on the receiving frame 5b moves from the horizontal position (A) to the vertical position (B). At this time, as described above, by the clamp arm 5i or the like,
The side member SM is held in a vertical position without falling.

After that, the cylinder 5e is ejected and the frame 5a is moved forward, whereby the side member SM is moved.
Moves to the set position shown by (C) in the vertical position.

In this way, the left and right side members S
When M and SM are set up on the left and right side portions of the underbody UB in a rising shape, the set states are held by the set position holding devices 7 and 7, respectively. As shown in FIG. 1, the set position holding devices 7 and 7 are provided so as to be movable between a preset process and a temporary mounting process by rails 8 and 8 laid in parallel along the center of each process. . Both rails 8 and 8 are fixed to the left and right side portions of the process surface plate 2 via supporting columns 8a to 8a, respectively, as shown in FIGS. Since both the set position holding devices 7 and 7 have the same configuration on the left and right, the set position holding device 7 on the right side will be described below.
Will be described. 8 and 9 show the set position holding device 7 on the right side of the process, but in FIGS. 8 and 9, the direction from right to left is the process advancing direction contrary to FIGS. That is, it is the moving direction of the underbody setting jig 1.

Now, the set position holding device 7 includes the rail 8
A long support bar 7b supported along the rail 8 via three carriages 7a to 7a movable above, and four holders 7c to 7c attached to the support bar 7b. ing. In FIG. 8, the holders 7c to 7c are omitted.

Each trolley 7a has a total of eight guide rollers 7d to 7d that form a pair at each of four positions and sandwich the rail 8 from the left and right, and a total of four guide rollers that form a pair at two positions before and after the moving direction and sandwich the rail 8 from above and below. The guide rollers 7e to 7e are provided so that the guide rollers 7e to 7e move smoothly in the left-right and up-down directions without rattling.

The support bar 7b has substantially the same length as the side member SM.

Three holders 7c to 7c are attached to the front side (left end side in FIG. 9) of the support bar 7b in the process advancing direction and to one rear portion (right end in FIG. 9) in the process advancing direction. Each holder 7c has the same structure, and details thereof are shown in FIG.
0 is shown.

As shown in the figure, the holder 7c is provided with a cylinder 7g so that a holding block 7i can move obliquely upward. The holding block 7i receives the side member SM in the set state from below and also obliquely downwards. Since the side member SM is pressed against the underbody UB, the set state of the side member SM is maintained.

The cylinder 7g is a substantially L-shaped bracket 7
It is supported by the support bar 7b via f, and is attached to the inside of the process (on the left side in the drawing) in a diagonally upward direction slightly inclined. A guide rod 7h is supported by the bracket 7f in parallel with the stroke direction of the cylinder 7g and slidably. A plate 7j is mounted between the rod tip of the cylinder 7g and the upper end of the guide rod 7h, and the holding block 7i is mounted on the upper surface of the plate 7j. The guide rod 7h has a function of preventing the holding block 7i from rotating.

Further, since a cylinder with a brake is used as the cylinder 7g, the set side member SM does not shift downward even if air leaks or the like.

The three holders 7c to 7c arranged on the front side (left side in FIG. 9) in the process advancing direction are arranged at predetermined intervals in the process advancing direction, and the side members SM to be preset are arranged. One of the holders 7c is used by appropriately selecting it according to the length, and the other two are not used. Of the three holders 7c to 7c arranged on the front side in the step progressing direction in FIG. 9, the left holder 7c.
Is for a super long body, the center holder 7c is for a long body, and the right holder 7c is for a short body. However, the holder 7c on the rear side in the process proceeding direction
Is used for all vehicle types. Therefore, the side body SM is held by the two front and rear holders 7c, 7c.

According to the set position holding device 7 thus configured, the side member S is moved by the preset device 5.
When M is set to the position (C) in FIG. 6, the holders 7c,
The cylinders 7g and 7g of 7c operate in the protruding direction,
The holding blocks 7i, 7i are pressed against the lower part of the side member SM as shown in FIG. 11, whereby the side member SM is pressed obliquely downward from the underbody UB, and the side member SM is then pressed against the underbody UB. It is held in the vertical position that is set to the upright state.

Next, the underbody UB and the side body SM are joined together with the set position holding operation of the side member SM by the set position holding device 7. That is, as shown in FIG. 12, the underbody UB
A substantially L-shaped bent edge 9 is attached in advance in the middle of the height direction. When the side member SM is set,
The end portion is applied to the bent edge 9, and then the bent edge 9 is bent, and the end portion of the side member SM is sandwiched so that the UB and SM are coupled to each other.

Bending of the bending edge 9 is performed by the presetting device 5
The folding device 10 provided on the receiving frame 5b of the sheet is used. As shown in FIG. 15, the folding device 10 is supported by a bracket 10a attached to the rear end portion of the receiving frame 5b in the process advancing direction, and is rotatably supported on the bracket 10a about a fulcrum 10b in the horizontal direction. Pressing arm 1
0c, the pressing arm 10c and the bracket 10a
It is provided with a cylinder 10d interposed between and. The cylinder 10d is supported on the bracket 10a so as to be horizontally rotatable about a fulcrum 10e.
The tip of f is connected to the pressing arm 10c so as to be rotatable in the horizontal direction about a fulcrum 10g.

According to the folding device 10, the side member SM is moved forward when the receiving arm 5b of the presetting device 5 holds the side member SM in the vertical posture and advances.
The end portion of is applied to the bent edge 9. on the other hand,
At this stage, the cylinder 10d operates in the retracting direction, and the pressing arm 10c is located at the position shown by the chain double-dashed line in the figure. After that, the cylinder 10d is operated in the protruding direction and the pressing arm 10c is rotated toward the bending edge 9, whereby the bending edge 9 is moved to the tip end portion 10h of the pressing arm 10c.
Thus, the side member SM is bent so as to sandwich the end thereof. When the bending of the bending edge 9 is completed, the cylinder 10d operates in the retracting direction and the pressing arm 10c is returned to the position shown by the chain double-dashed line in the figure.

By thus coupling the side member SM to the underbody UB at the preset stage, the set side member SM can be surely prevented from falling down, whereby the main body MB can be maintained while maintaining a good set state. Can be sent to the tacking step. In this respect, for example, as shown in FIG. 13, when a part of the side member SM is a part of the underbody UB that rides from above, the part of the side member SM is partially preset at the preset stage. By leaning on the underbody UB, the side member SM is prevented from falling.

However, depending on the type of vehicle, there is a case where the side member SM is not provided with a portion for riding on the underbody UB. In this case, as shown in FIG. If only the lower part is held, the side member SM may fall to the side as indicated by the chain double-dashed line in the figure, which makes it impossible to carry out the next temporary attachment process while holding the set position. The present embodiment exemplifies a preferred form in the case of the side member SM that does not have this portion to be mounted, and the side member S of such a form is illustrated.
Even in a vehicle model having M, the bending edge 9 provided on the underbody UB side is bent at the time of presetting to sandwich the end portion of the side member SM, and thereby the two members are coupled to each other, so that the side member SM can be securely tilted. It can be prevented.

Therefore, as shown in FIG. 13, when the object to be temporarily attached is a vehicle model in which a part of the side member SM rides on a part of the underbody UB from above, the folding operation is not always necessary. It is not necessary to set the bending edge 9 and thus the folding device 10.

Next, as described above, the side member S
When M is held in the set position by the set position holding device 7 and the folding edge 9 is bent by the bending device 10 to set the side member SM to the underbody UB, the preset device is set. The receiving frame 5b of No. 5 is unclamped from the side member SM, and after that, the cylinder 5e operates in the retracting direction to retract the frame 5a and reach the standby position shown by the chain double-dashed line in FIG. Operates in the retracting direction to return the receiving frame 5b to the horizontal position.

As described above, both side members S
When M and SM are preset in the underbody UB,
While maintaining this set state, these are sent to the next temporary attachment step. At this time, the underbody set jig 1 is moved toward the temporary attachment process by the feeding device 14, and the set position holding devices 7, 7 for holding the set state of the side members SM, SM are the connecting devices 11, 11. By this, it is connected to this underbody setting jig 1, and by this, it moves integrally to the temporary attaching step. The set position holding devices 7 and 7 have the feeding device 4 for self-propelling, but in order to maintain the set state of the side members SM and SM at the stage of moving from the preset process to the temporary mounting process, they are unique. It does not move depending on the feeding device 4. This feeder 4
Functions at the stage of returning from the temporary attachment process to the preset process.

The left and right connecting devices 11 and 11 have the same structure, and the details of the right connecting device 11 in the process advancing direction are shown in FIGS. The connecting device 11 includes a cylinder 11a that is supported by a support bar 7b of the set position holding device 7 so as to be vertically rotatable about a fulcrum 11b, and a forked connection that vertically rotates by the cylinder 11a. The plate 11c and the engagement plate 11d fixed to the upper surface of the underbody setting jig 1 are mainly configured. The connecting plate 11c is pin-connected to the rod tip of the cylinder 11a at a fulcrum 11e, and is also pin-connected to a base 11g on the support bar 7b side at a fulcrum 11f. Therefore, when the cylinder 11a is pushed out, the connecting plate 11c is rotated to the horizontal position shown by the solid line in FIG. 7, and the engaging plate 11d enters between the two forks, whereby the underbody setting jig 1 is moved. The set position holding device 7 is connected to the set position holding device 7. When the underbody setting jig 1 is moved by the feeding device 14 in this connected state, the set position holdings 7, 7 are also moved integrally through the connecting devices 11, 11, whereby the side members SM, SM of both side members are moved. The main body MB can be sent to the temporary attaching step while maintaining the set state.

When the cylinder 11a is actuated in the retracting direction after reaching the temporary mounting step, the connecting plate 11c causes the fulcrum 1 to move.
1e is pivoted upward to disengage from the engaging plate 11d, whereby the set position holding device 7 and the coupling device 11 are separated from the underbody setting jig 1.
Therefore, it is possible to move by itself. The set position holding device 7 and the coupling device 11 are returned to the preset process by the feeding device 4. This feeding device 4 is shown in FIG.
As shown in FIGS. 2 and 9, it is configured by a chain transmission mechanism including a drive motor 4a, a chain 4b, and the like.

The preset step has been described above, and the temporary attachment step will be described next. In this tacking process,
Left and right side members S with respect to the underbody UB
After the M, SM and the roof panel RP are accurately positioned, spot welding is performed by a welding robot to temporarily attach them.

In this temporary attachment step, the side member positioning jigs 20, 20 for accurately positioning the side members SM, SM sent from the preset step with respect to the underbody UB are symmetrical with respect to the line. , And the configuration thereof is shown in FIGS. 3 to 5, 16 and 17. Since both side member positioning jigs 20 and 20 have the same configuration on the left and right, the one on the right side in the process advancing direction will be similarly described.

As shown in the figure, the side member positioning jig 20 is a frame 20a framed in a rectangular shape and provided with various jigs for clamping the side member SM, and is provided so as to be movable in the body width direction. ing. That is, as shown in FIGS. 16 and 17, the side gate 22 can be moved in the body width direction (left and right direction in FIG. 17) on the upper surface of the gantry 21 arranged on both sides of the temporary attachment process via the linear slide mechanism 23. The side member positioning jig 20 is mounted on the front surface of the side gate 22 in a standing posture.

The side gate 22 is moved by the cylinder 25.
a, the moving sprocket 25b, the chain 25c, etc., and the side gate 2
2 moves with a stroke twice the stroke of the cylinder 25a. Moreover, the side gate 22 is positioned at the position closest to the main body MB (a) by the stopper devices 26 to 28 provided at three positions on the pedestal 21 (FIG. 17).
The leftmost position in the middle), the standby position (b) farther from the main body MB (the middle position in FIG. 17), and the replacement position (c) farther from the standby position (FIG. 17).
It can be stopped at three locations (the rightmost position in the center).

The stopper device 26 is for the positioning position (a) and the stopper device 27 is for the standby position (b).
The stopper devices 28 are used respectively for the replacement position (C). The stopper devices 26 and 27 are configured to be movable back and forth with respect to the moving path of the side gate 22 by cylinders 26a and 27a, respectively, and the stopper device 28 is fixed to the upper surface of the side gate 22 in a protruding manner. Each of the stopper devices 26 to 28 prevents the side gate 22 from retracting when the cylinder 25a is retracted.
The side gate 22 and thus the side member positioning jig 20 are positioned.

Next, the side member positioning jig 20
Is also movable in the same direction by guide rails 22a and 22b laid along the longitudinal direction of the body above and below the side gate 22. Side member positioning jig 2
0 can be exchanged by moving in the same direction. This point will be described later.

Further, as shown in FIGS. 16 and 17, a large number of guide rollers 24 to 24 are arranged at the lower front surface of the side gate 22, and the side member positioning jig 20 is mounted on the guide rollers 24 to 24. Clamping device 30 to 3 which will be described below in this mounted state.
Side gate 22 clamped by 0, 35, 35
Fixed to the front of the.

Since the core heights of the guide rollers 24 to 24 are set accurately, the side member positioning jig 20 placed on the guide rollers 24 to 24 is accurately positioned in the body height direction. . As described above, the guide rollers 24 to 24 have a function of smoothly moving the side member positioning jig 20 and a function of positioning the side member positioning jig 20 in the height direction. It is possible to accurately position the side member positioning jig 20 in the body height direction.

Next, the side member positioning jig 20
16 is clamped in a state of being positioned with respect to the side gate 22 in the body width direction and the body longitudinal direction by a total of eight clamping devices 30 to 30, 35, 35 provided on the side gate 22 as shown in FIG. . Clamping devices 30 to 30 at six peripheral locations out of eight are for positioning in the body width direction, and the clamping devices 3 at two central locations.
Reference numerals 5 and 35 are for positioning in the longitudinal direction of the body.

First, the clamp devices 30 at six locations around the
As shown in FIG. 18, a cylinder 31 rotatably attached to the side gate 22 via a fulcrum 31a, a rod tip of this cylinder 31 rotatably connected via a fulcrum 32a, and a fulcrum 32b. A first link arm 32 rotatably supported by the side gate 22, a second link arm 33 rotatably connected to the first link arm 32 via a fulcrum 33a, and a second link arm 33.
Is rotatably connected to the fulcrum 34a via a fulcrum 34a, and the fulcrum 3
The clamp arm 34 is rotatably supported by the side gate 22 via 4b.

According to such a clamp device 30, as shown in FIG.
When the cylinder 31 is retracted as shown by the solid line in FIG. 1, the first link arm 32 rotates in the clockwise direction around the fulcrum 32b, which causes the second link arm 33 to rotate.
Moves upward while rotating counterclockwise, and the clamp arm 34 rotates clockwise around the fulcrum 34b. Then, the tip of the clamp arm 34 is brought into contact with the stopper edge 20d provided on the frame 20a of the side body positioning jig 20, whereby the stopper edge 20 is formed.
Then, the side body positioning jig 20 is pressed against the guide rollers 29 to 29 attached to the side gate 22.

As shown in FIG. 16, the guide rollers 29 to 29 are arranged at six places in groups of three corresponding to the respective clamp devices 30 to 30. Each guide roller 29-2
9 is supported rotatably in the horizontal direction with the axis line up and down, and moreover, the axis lines of the guide rollers 29 to 29 are mounted so as to be accurately positioned on the same plane, and the diameter thereof is also set. It is aligned with high precision. Therefore, the cylinders 31 to 31 of the clamp devices 30 to 30 at six locations are simultaneously pulled in and actuated, and the stopper edges 21d at six locations are respectively guided by the clamp arms 34 to the guide rollers 29 to 30.
When the side body positioning jig 20 is pressed against 29 and clamped, the side body positioning jig 20 is accurately positioned with respect to the side gate 22 in the pulling direction (body width direction).

Next, the two clamping devices 35, 35 at the center of the frame 20a are the laterally-positioned clamping devices 30 for positioning in the width direction. Similarly, the cylinders, the first and second link arms, and The clamp arm 35a is provided. However, both clamp devices 35, 3
In FIG. 16, the clamp device 35 on the right side is for positioning in the process advancing direction, and the clamp device 35 on the left side is for positioning in the process retreating direction.

FIG. 19 shows a clamp device 35 for positioning in the process backward direction. However, in the figure, the cylinder and the first and second link arms are omitted. As shown in the figure, the clamp arm 35a of the clamp device 35 is attached to the side gate 22 so as to be able to rotate laterally about a fulcrum 35b.

When the cylinder is retracted in the clamp device 35, the clamp arm 35a contacts the stopper edge 20e provided on the frame 20a of the side member positioning jig 20 from behind via the first and second link arms. As a result, the side member positioning jig 20 is positioned in the process backward direction. Although not shown, in the other clamp device 35, when the cylinder is retracted and operated, the clamp arm 3
5a is similarly brought into contact with the stopper edge provided on the frame 20a of the side member positioning jig 20 from the front side, whereby the side member positioning jig 20 is positioned in the process forward direction.

Here, in both of these clamp devices 35, 35, since the pivoting end of the clamp arm 35a in the clamping direction is restricted by the stopper member 35c provided on the side gate 22, the both clamp devices 35, 3 will be described.
5, the side member positioning device 20 is positioned with respect to the side gate 22 with high accuracy in the longitudinal direction of the body.

As described above, the clamp devices 30 at the six locations
The side member positioning jig 20 is positioned with high precision in the body width direction and the body longitudinal direction with respect to the side gate 22 by the clamp devices 35, 35 at two positions up to 30.

On the other hand, when the cylinder 31 of each of the clamp devices 30 to 30 is ejected and operated, the first link arm 32 rotates in the counterclockwise direction about the fulcrum 32b as shown by the chain double-dashed line in FIG. As a result, the second link arm 33 is rotated clockwise and displaced downward, and the clamp arm 34 is rotated counterclockwise about the fulcrum 34b, so that the side member positioning jig 20 moves sideways. The gate 22 is unclamped in the body width direction. Also in the clamp devices 35, 35, when the cylinder is ejected, the clamp arms 35a, 35a rotate in opposite directions, whereby the side member positioning jig 20 unclamps the side gate 22 in the longitudinal direction of the body. To be done.

When the side member positioning jig 20 is unclamped with respect to the side gate 22 in the body width direction and the body longitudinal direction, the side member positioning jig 20 moves in the body longitudinal direction (horizontal direction in FIG. 16).
Can be moved to. This side member positioning jig 2
The unclamping of 0 is performed at the time of replacement. That is, the side gate 2 is driven by the retracting operation of the cylinder 25a.
2 is most retracted, and is considered when the side member positioning jig 20 reaches the replacement position (C).

An exchange device 40 for exchanging the side member positioning jig 20 is provided at the exchange position (c) of the side member positioning jig 20. This exchange device 40 has two types of side member positioning jigs (hereinafter referred to as A type 20A,
Each of the side member positioning jigs 20A and 20B is integrally moved in the longitudinal direction of the body by a rack and pinion mechanism using the connecting bar 41 as a drive source. By doing so, the A-type or B-type side member positioning jig 20A (20B) can be selected in accordance with, for example, the vehicle type, and can be moved to the front surface of the side gate 22.

First, as shown in FIG. 3 and FIG. 4, the storage shelves 35A and 35B of the side member positioning jig 20 are located in front and rear of the exchange position (c) of the side member positioning jig 20 in the longitudinal direction of the body. They are arranged on the left and right respectively. Since the storage shelves 35A and 35B and the exchange device 40 have the same configuration on the left and right of the process, the right side (the lower side in FIG. 3) of the process proceeding direction will be described.

Both storage shelves 35A and 35B are frame-shaped so that the side member positioning jig 20 can be held in a standing posture, respectively.
Guide rails are similarly laid along the longitudinal direction of the body on the upper portions of 5A and 35B, corresponding to the guide rails 22a laid on the upper portion of the front surface of the side gate 22. When the side gate 22 reaches the exchange position (C), the guide rail 22a and both guide rails on the storage shelves 35A, 35B side are aligned in a straight line, whereby the side member positioning jig 20 extends along the longitudinal direction of the body. It becomes movable.

In this moving process, the side member positioning jig 20 is transferred between the guide rail 22a on the side gate 22 side and the guide rails on both storage shelves 35A, 35B, whereby the side member 22 is stored in front of the side rail. It can be moved between the shelves 35A and 35B. Therefore, the side member positioning jig 20 is stored in the storage shelves 35A and 35B while being suspended from the guide rail.

A large number of guide rollers 36 to 36 are arranged in the same direction below the storage shelves 35A and 35B. By moving between the guide rollers 24 to 24 provided on the side gate 22 and the guide rollers 36 to 36, the side member positioning jig 20 is smoothly taken out from the storage shelves 35A and 35B and stored.

Next, the switching device 40, as described above,
Type or B type side member positioning jigs 20A, 2
It is for replacing the 0B and positioning it on the front surface of the side gate 22, the details of which are shown in FIG.

As shown in the figure, a motor 42 is installed on the upper surface of a support base 43 separately provided, and a pinion gear 45 is attached to an output tool of the motor 42 via a reduction gear 44. On the other hand, on the upper surface of the support base 43, the guide rail 46
Are laid along the longitudinal direction of the body, and two moving carriages 47, 47 are installed on the guide rail 46.
It is movably supported via individual wheels 47a to 47a. One moving carriage 47 is for the type A side member positioning jig 20A, and the other moving carriage 47 is for B.
It is for a kind of side member positioning jig 20B.

Both moving carriages 47, 47 are connected to each other by the connecting bar 4
It is fixed at a fixed interval of 1, and the interval is
As shown in FIG. 20, side member positioning jigs A and B arranged side by side in the longitudinal direction of the body.
Engagement blocks 20A provided on the upper surfaces of A and 20B, respectively
It is set to the interval between A and 20BB.

A rack 48 is attached to the connecting bar 41 over the entire length thereof, and the pinion gear 45 is meshed with the rack 48. On the other hand, the two movable carriages 47, 47 are each provided with a bifurcated connecting block 49.
Is attached so as to be vertically rotatable at a fulcrum 49a. The rotation operation of both the connection blocks 49, 49 is performed by the operation of the cylinder 49b. Cylinder 49
The operations of b and 49b are independently performed on each of the A type side and the B type side.

According to the exchanging device 40 thus constructed, when the cylinders 49b, 49b are actuated in the projecting direction, the connecting blocks 49, 49 are pivoted downward to move the side member positioning jigs 20A, 20B upward. The engaging blocks 20AA and 20BB enter between the two forks of the connecting blocks 49 and 49 by this extending operation, and thereby the side member positioning jigs 20A and 20B are integrally connected via the connecting bar 41. .

When the motor 42 is started in this connected state,
After the meshing displacement of the pinion gear 44 and the rack 48, the connecting bar 41 moves in the longitudinal direction of the body, whereby both side member positioning jigs 20A, 20B move integrally in the same direction. The motor 42 can rotate forward and backward, and both side member positioning jigs 20A and 20B can be arbitrarily moved in both longitudinal directions of the body.

Although not shown, the movable carriage 47 moves a predetermined distance to store one of the side member positioning jigs 20A (20B) in the storage shelf 35A (35B), and accordingly, to position the other side member. Jig 20
When B (20A) reaches the front surface of the side gate 22, this is detected by the sensor and the motor 42 is stopped.

In FIGS. 3, 4 and 20, the B-type side member positioning jig 20B is taken out to the front surface of the side gate 22, and the A-type side member positioning jig 20A is taken out.
Is stored in the storage shelf 35A. Therefore, a case where the B-type side member positioning jig 20B is used for the process work as shown in the figure will be described. When the B-type side member positioning jig 20B reaches the front surface of the side gate 22 and the motor 42 stops, this B
Only on the seed side, the cylinder 49b is retracted to rotate the connecting block 49 upward, whereby the side member positioning jig 20B of type B is separated from the moving carriage 47.

At this stage, since the type B side member positioning jig 20B has climbed over the guide rollers 24 to 24, it is accurately positioned with respect to the side gate 22 in the body height direction.

When the B-type side member positioning jig 20B is separated from the moving carriage 47 in this way, the above-mentioned clamp devices 30 to 30, 35 and 35 are operated,
The side member positioning jig 20B is accurately positioned with respect to the side gate 22 in the body width direction and the body longitudinal direction.

In this way, when the B-type side member positioning jig 20B is clamped on the front surface of the side gate 22 at the exchange position (C), the cylinder 25 is next ejected to move the side gate 22 forward. As a result, the type B side member positioning jig 20B reaches the standby position (b). When the main body MB is carried into the temporary mounting process, the cylinder 25 is further pushed out and the side member positioning jig 20B is moved to the positioning position (a).
To the side member positioning jig 2
The side member SM of the main body MB is clamped by various jigs mounted on the 0B, and the side member SM is accurately positioned with respect to the underbody UB as described above.

In the case where the side member positioning jig 20 also needs to be changed from the B type to the A type due to the change of the B type to the A type, the type of the cylinder 25 Is operated to retract the side gate 22 to the replacement position, and at this position, the cylinder 49b on the type B side is ejected to operate to connect the connecting block 49.
Is rotated downward, so that the type B side member positioning jig 20B is connected to the moving carriage 47. After that, the motor 42 is started and the connecting bar 41 is moved to the position shown in FIGS.
And, the side member positioning jig 20A of A type is moved to the right side in FIG.
The side member positioning jig 20B of type B is stored in the storage shelf 35B while being positioned on the front surface of No. 2.

Next, the type A side cylinder 49b is retracted to rotate the connecting block 49 upward, whereby the type A side member positioning jig 20A is separated from the moving carriage 47. After that, if the cylinder 25 is similarly ejected to move the side gate 22 forward to the standby position (b), the side member positioning jig 2 of this type A
The side member SM can be positioned with respect to the main body MB of the A vehicle model by using 0A.

When the side member positioning jig 20 is replaced, the cylinder 49b is retracted and actuated to engage the connecting block 49 with the engaging block 20A, as illustrated.
The procedure of removing from A and 20BB may be omitted. Even in this case, since the connecting block 49 is formed in a bifurcated shape, the side member positioning jig 20 can be advanced without any trouble. However, when the side member positioning jig 20 is removed from the storage shelves 35A and 35B for maintenance or the like separately from the time of replacement, the connecting block 49 is rotated upward to move the trolley 4.
It is convenient that the side member 20 can be separated from the side member 7.

As described above, according to the present embodiment, the side member positioning jig 20 positions the side member SM only in the temporary mounting step, and does not move to the preset step as in the conventional case. Conventionally, the side member positioning jig moves between the preset process and the temporary mounting process, accurately positions the side member SM on the underbody UB during presetting, and moves to the temporary mounting process together with the main body MB in this positioning state. It was a composition. For this reason, the side member positioning jig needs to be accurately positioned at a predetermined position not only in the temporary mounting process but also in the presetting process. As a result, not only the structure of the apparatus becomes complicated, but also the cumulative positioning error occurs. However, it was difficult to attach the side member with high accuracy.

In this respect, according to the present embodiment, the side member positioning jig 20 is not replaced unless it is replaced.
Since it is maintained in a fixed state on the side gate 22 and therefore it is not necessary to position it for each work tact as in the conventional case, the device configuration is simplified and the conventional accumulated error is eliminated to increase the height of the side member SM. Accurate temporary attachment can be realized.

In the present embodiment, the side members SM, SM are positioned with respect to the underbody UB in the presetting step and the positioning during the transfer to the temporary attaching step is performed by the side member presetting devices 5, 5 and the set position holding device 7. After roughly reaching the temporary mounting step, the side member positioning jigs 20 and 20 perform high-precision positioning immediately before the temporary mounting. As described above, since the highly accurate positioning is performed only at a necessary stage, it is not necessary to waste the cost of the equipment, and the cost of the equipment can be reduced in this respect.

Further, in the preset stage, the bending edge 9 provided on the underbody UB side is bent by the bending device 10 and the end portion of the side member SM is sandwiched, so that it is shown by a chain double-dashed line in FIG. Such a fall of the side member SM is prevented, and thus the preset state thereof can be surely held. Thus, according to the present embodiment, for example, as shown in FIG. 13, the side member SM
In addition, the side member SM is prevented from collapsing and the set state is reliably maintained even in the temporary mounting process, even for a vehicle type in which a portion on which the underbody UB is mounted is not set from above. Therefore, the versatility of the assembling apparatus according to the present embodiment is enhanced in this respect.

Moreover, since the A-type and B-type side member positioning jigs 20A and 20B can be exchanged and used according to the vehicle type as illustrated, the versatility of the assembling apparatus is improved also in this respect. There is. The replacement of the side member positioning jig 20 is performed by moving the side gate 22 to the replacement position and using a separately provided replacement device 40, so that the replacement work can be performed easily.

In the illustrated embodiment, two types, A type and B type, are exemplified. However, for example, 3 in the longitudinal direction of the body.
More than one kind of side member positioning jigs 20A, 20
B, 20C ... are arranged side by side and the same configuration as the above, such as the moving carriage 47 and the connecting block 49, is set for each, so that any kind of side member positioning jig 20 can be selected from three or more kinds. It can be selected and mounted, and by doing so, it is possible to develop a configuration that can be applied to a wider variety of vehicle types.

Furthermore, according to this embodiment, when the side member 20 is replaced, the guide rollers 24 to 2 are provided on the side gate 22 in order to smoothly convey the side member positioning jig 20 to the front surface of the side gate 22.
Nos. 4, 29 to 29 are provided, and the guide rollers 24 to 24 and 29 to 29 are accurately aligned in diameter and the core height is also accurately set.

Therefore, the side member positioning jig 2
0 is mounted on the guide rollers 24 to 24 in a state of being attached to the side gate 22, so that the positioning in the body height direction can be performed with high accuracy and speed, and the guide rollers 29 to 29 by the clamp devices 30 to 30. ~
By being brought into contact with 29, the positioning in the width direction of the body can be performed quickly and with high accuracy. As described above, the guide rollers 24 to 24 and 29 to 29 for smoothly moving the side member positioning jig 20 also have a function as a reference level for positioning the side member positioning jig 20. Therefore, in this respect, the structure of the assembling apparatus can be simplified and the equipment cost can be reduced.

In this respect, conventionally, the guide rollers provided on the side gates are arranged with a rough accuracy and have a function only for smoothly moving the side member positioning jig. Therefore, the side member positioning jig is positioned with respect to the side gate by setting a positioning hole in the side member positioning jig and clamping the positioning pin set on the side gate side into this positioning hole. It was As described above, conventionally, the guide function and the positioning function of the side member positioning jig are set separately, and these are set in both the temporary mounting process and the preset process. Then, there is a problem that the structure becomes complicated and the equipment cost increases.

Next, the transfer device 50 for transferring the roof panel RP to the temporary mounting step will be described. In the temporary attaching step, the left and right side members SB, SB are positioned and temporarily attached to the underbody UB as described above, and the roof panel RP is positioned with respect to both side members SB, SB. Work for temporary attachment is done. The roof panel RP is temporarily attached by a welding robot arranged at a predetermined position, but since this does not require any particular change, its description and illustration are omitted.

Details of the roof panel carrying device (hereinafter, simply referred to as a carrying device) 50 of the present embodiment are shown in FIGS. 5 and 21 to 25. Conveying device 5 of the present embodiment
0 is a roof transfer jig 51 for positioning and gripping the roof panel RP, which is separable from the transfer carriage 52.
When P is transported, it is sufficient to replace only the roof transport jig 51 with another one, and the transport carriage can be used for all vehicle types.

Now, as shown in FIG. 5, the main body MB
Two transport rails 53, 53 are provided parallel to each other and suspended from the ceiling along the direction orthogonal to the assembly process above. The leading ends (the right end in the figure) of the transport rails 53, 53 are located above the temporary attaching step, and the elevating rails 55, 55 of an elevator device (not shown) are connected to the end of the temporary attaching process. The lifting rails 55, 55 are, as shown in the drawing, transport rails 53, 53.
To a position where the roof panel RP can be placed between the side members SM, SM by being lowered from this position. Since the lifting device does not need to be changed, its description is omitted.

Only one self-propelled carrier truck 52 is attached to the carrier rails 53, 53, and one roof carrier jig 51 is attached to the carrier truck 52 through four sets of connecting devices 60-60. Is detachable and is connected in a hanging manner. Both of the transport rails 53, 53 are linear without any curved portion, and therefore the transport route of the transport vehicle 52 is not a conventional loop route but a single straight route.

First, the details of the carrier truck 52 are shown in FIGS. The carrier cart 52 has a frame 52a framed in a substantially rectangular shape.
One wheel 52b and eight guide rollers 52c to 52c are attached to approximately four corners of a.
The wheels 52b to 52b roll on the upper surface of the transport rail 53. The two wheels 52b, 52b on one side of the four wheels 52b to 52b in the moving direction are positively rotated by the drive motor 52d, and are drive wheels. The remaining two wheels 52b, 52b have no drive source and are driven wheels.

The eight guide rollers 52c to 52c, which are assembled at the respective corners of the frame 52a, roll on the side surfaces of the transport rail 53. As shown in the figure, the transport rail 53 is sandwiched from the left and right sides in the moving direction. In addition, they are arranged in two rows in the moving direction and two rows in the upper and lower directions, respectively. With the guide rollers 52c to 52c arranged in this way,
The transport carriage 52 can move smoothly without falling off from the transport rail 53, and lateral shake or vertical shake at the time of starting or stopping is suppressed.

By the forward and reverse rotations of the two drive motors 52d and 52d, the carrier vehicle 52 moves forward and backward toward the upper part of the temporary mounting process. Moreover, by stopping the drive motors 52d, 52d during the movement, the transport carriage 52 can be arbitrarily stopped at a predetermined position.

In FIG. 22, reference numeral 53a is a beam on the ceiling of the factory building, and the carrying rails 53, 53b are mounted via the supporting columns 53b-53b attached to the beams 53a, 53a at appropriate intervals.
53 is attached in a suspended manner along the beams 53a, 53a.

Next, at the same four corners of the frame 52a, connecting devices 60 for connecting the transport jigs 51 in a suspended manner are arranged. The connection device 60 has four
The location is the same, and its detailed configuration is shown in FIG.

Bifurcated support blocks 61 are attached to the four corners of the frame 52a so as to open downward. Engaging claws 62 and 63, whose front ends are formed substantially at right angles, are mounted between the two forks of the support block 61 so as to be opposed to each other in the left-right direction in the transport direction and to be rotatable around fulcrums 62a and 63a, respectively. ing. One end of a connecting arm 64 is rotatably connected to the engaging claw 62 on the right side in the drawing so as to be rotatable around a fulcrum 64a, and the other end of the connecting arm 64 is connected to the engaging claw 63 on the left side in the figure about a fulcrum 64b. Are rotatably connected. In this way, both engaging claws 62, 63
Are engaged with each other via the connecting arm 64, the engaging claws 62 and 63 are allowed to rotate only in opposite directions, whereby the engaging claws 62 and 63 are closed in a direction in which they are closed. It is interlocked to rotate in the (clamping direction) and rotate in the opening direction (unclamping direction).

A release lever 65 is attached to the engaging claw 63 on the left side of the drawing.
Are integrally formed, and the rotation center of the release lever 65 coincides with the fulcrum 63a. Since the tension spring 66 is interposed between the release lever 65 and the support block 61, the release lever 65 is biased in the direction of rotating upward (clockwise direction in the drawing, clamping direction). Since the release lever 65 is urged in the clamping direction, the engagement claw 63 on the left side in the drawing is also urged in the clockwise direction, and thus the engagement claw 62 on the right side in the figure is urged in the counterclockwise direction. . In addition, at the tip of the release lever 65,
A roller 65a is attached to realize a smooth releasing operation by a releasing block 72 described later.

In this way, since the release lever 65 rotates in the clamp direction by the tension spring 66 in the free state, the engaging claw 62 rotates in the counterclockwise direction (clamp direction),
The engaging claw 63 rotates clockwise (clamping direction),
As a result, the space between the engaging claws 62 and 63 is closed.
Therefore, as shown in FIG. 25, when the release lever 65 is rotated counterclockwise against the tension spring 66, the space between the engaging claws 62 and 63 is opened.

Next, on the upper surface of the carrying jig 51, four connecting pins 67 to 67 as engaging members which make a pair with the respective connecting devices 60 to 60 of the carrying carriage 52 are attached in a protruding manner upward. ing. An engaging edge 67 is provided on the head of each connecting pin 67.
a and 67a are formed in a protruding shape to the left and right in the transport direction. Although illustration is omitted, the carrying jig 51 is provided with various gripping devices for gripping the roof panel RP on the lower surface side thereof, but these are not described in detail because they do not need to be particularly changed.

The transfer jig 51 approaches the transfer carriage 52 from below, and the connecting pins 67 to 67 are connected to the connecting device 60.
The engaging claws 62, 63 enter between the engaging claws 62, 63 while spreading the engaging claws 62, 63 against the tension spring 66 and the engaging edges 67a, 67a of the engaging claws 62a, 63a. After passing through the portion, both engaging claws 62 and 63 are closed by the tension spring 66, and the body portion of the connecting pin 67 is sandwiched. This sandwiched state is shown in FIG.

At this stage, when the conveying jig 51 is stopped from rising and is brought into a suspended state, the engaging edges 67a and 67a of the connecting pins 67 to 67 are engaged with the engaging claws 62 and 67, respectively. Since it will be on the upper surface of the tip of 63,
The self-weight of the transport jig 51 is added to both the engaging claws 62 and 63 via the engaging pin 67, and the self-weight is applied to both the engaging claws 62 and 63.
Is closed, that is, the tips of both the engaging claws 62, 63 act in the direction in which they engage the lower surfaces of the engaging edges 67a, 67a of the engaging pin 67.

From this, the connecting device 60 of the present embodiment.
According to the above, since both the engaging claws 62 and 63 are more firmly engaged with the engaging pin 67 by the own weight of the carrying jig 51,
It is possible to firmly connect the heavy-duty transfer jig 51, and even if it is in a suspended state, reliable transfer can be performed without fear of dropping. The connection state of the transfer jig 51 is the transfer jig 5
Since the larger the self-weight of 1 is, the stronger it is, the present invention is not limited to the illustrated transport jig 51, and is suitable for transporting other heavy objects in a suspended state.

Moreover, the coupling device 60 according to the present embodiment.
According to the above, since the actuator such as the cylinder is not required at all, it is not necessary to provide air pipes or electric wiring to the carrier truck 52. From this, it is possible to simplify the structure of the carrier truck 52 that reciprocates a predetermined distance, and to avoid problems such as pipe twisting and disconnection when air pipes are used, and to reduce equipment costs. Good maintainability can be secured.

Next, the connection releasing device 70 for releasing the connecting device 60 when the transfer jig 51 is separated from the transfer carriage 52 will be described. The connection releasing device 70 is provided with a type A and type B transfer jig exchange position (d) (or (e), which will be described later).
In each of the four support columns 53b to 53b, one set is attached to each of the four support columns 53b to 53b at a total of eight locations corresponding to the connecting devices 60 to 60. The decoupling devices 70 to 70 are attached at a position that does not hinder the movement of the transport carriage 52, that is, outside the moving area of the transport carriage 52.

Each connection release device 70 is shown in FIG. 23 and FIG.
As shown in FIG. 4, a cylinder 71 is attached to the support column 53b downward, and a release block 72 is attached to the tip of the rod. In the cylinder 71,
A type with a rod detent is used. The release block 72 has a substantially U shape having an upper edge 72a and a lower edge 72b, and is attached with its open side facing the transport carriage 52 as shown in FIG. This direction is maintained because the rod of the cylinder 71 does not rotate,
As a result, the release block 72 does not interfere with the release lever 65 of the coupling device 60 when the transport vehicle 52 moves.

At the stage where the carrier truck 52 moves, the cylinder 71 is held on the retracted side and the connection releasing device 70 is released.
Does not work. When the transport carriage 52 stops at the transport jig replacement position (d), the roller 6 attached to the tip of the release lever 65 of the coupling device 60, specifically, the tip thereof.
5a is located between the upper edge 72a and the lower edge 72b of the release block 72.

Therefore, at the transfer jig replacement position (d), the transfer jig 51 is slightly lifted by the jig lift 80 so that both the engaging edges 67a, 67a of the engaging pin 67 have both the engaging claws 62, 63. It should be lifted from the tip of the.

When the cylinder 71 is pushed out in this state, the release block 72 moves downward, so that the roller 65a of the release lever 65 is pushed by the upper edge 72a of the release block 72 and the release lever 65 is pulled by a tension spring. 66
Counterclockwise, that is, in the unclamping direction, the engaging claws 62 and 63 rotate in the opening direction (unclamping direction).

In this way, when both the engaging claws 62 and 63 are opened in the unclamping direction, the two engaging edges 67a and 67a of the engaging pin 67 do not interfere with the both engaging claws 62 and 63. It is possible to evacuate downwards. This state is shown in FIG.

Therefore, when the jig lift 80 is lowered to move the carrying jig 51 downward, the engaging pin 67 is pulled out from between the engaging pawls 62 and 63, whereby the carrying jig 5 is moved.
1 is separated from the carrier truck 52.

Next, as shown in FIG. 5, two transfer jig replacement positions (d) and (e) and two transfer article supply positions (f) and (g) are shown below the transfer path. It is set along the transport route from the right side. At the transport jig replacement position (d) on the right side of the drawing, a transport jig 51A for type A is prepared,
At the transfer jig replacement position (e) adjacent to the left side thereof, a type B transfer jig 51B is prepared. Further, at the conveyed article supply position (f) on the right side of the drawing, the type A roof panel RPA as the conveyed article is supplied, and the conveyed article supply position (g) on the left side thereof is provided.
In the same manner, the type B roof panel RPB as the conveyed article is supplied. Hereinafter, the type A jig exchange position (d), the type B jig exchange position (e), the type A article supply position (f), and the type B article supply position (g) will be referred to in order.

The jig lifts 80A and 80B are arranged at the jig exchange positions (D) and (E) of the A type and B type.
A supply lift 81 is provided at the B-type article supply positions (F) and (G).
A and 81B are arranged. These four lifts 80
Tables 80a, 80b, 81a, 8 are attached to the A, 80B, 81A, 81B via a pantograph type lifting mechanism.
A parallel lift capable of moving up and down 1b in parallel is used, and each is installed on the upper surface of the mount 83.

According to the carrier device 50 of the present embodiment having the above-described structure, the roof jigs RPA and RPB of two types A or B can be appropriately transferred by the transfer jig 5 in the shortest transfer route.
1A and 51B can be exchanged and transported to the temporary attachment process.

That is, as shown in FIG. 26, one carrier truck 52 reciprocates along a straight carrier path formed by two carrier rails 53, 53. It is possible to connect the A-type transport jig 51A or the B-type transport jig 51B to the transport carriage 52 in a suspended manner via coupling devices 60 to 60. First, when the type A roof panel RPA is transported, the type A transport jig 51A is connected to the transport vehicle 52. Therefore, the carrier truck 52 is stopped at the type A jig exchange position (d), and then the type A jig lift 80A at this position (d) is lifted to move the type A mounted on the table 80a. The seed carrying jig 51A is brought closer to the carrying carriage 52 from below.

When the carrying jig 51A is raised, the engaging pins 67 to 67 provided on the upper surface of the carrying jig 51A resist the tension spring 66 against the engaging pawls 62 and 63 of the connecting devices 60 to 60 provided on the carrying carriage 52, respectively. While pushing and spreading, both the engaging claws 62, 63
Enter in between. As the transport jig 51A rises, the engagement pins 67 to 67 further enter, and the respective engagement edges 67
When a and 67a pass through the tips of the engaging claws 62 and 63, the engaging claws 62 and 63 are returned to the closing direction by the tension spring 66, whereby the engaging pins 67 to 67 are respectively engaged. , 63.

After the four engaging pins 67 to 67 are clamped by the engaging claws 62 and 63 in this way, the jig lift 80A for type A is turned to the lowering operation to lower the table 80a. Then, since the engaging claws 62 and 73 are inserted into the lower surfaces of the engaging edges 67a and 67a of the engaging pin 67, the conveying jig 51A slightly descends and then floats up from the table 80a. The respective engagement edges 67a, 67a of the engagement pins 67 to 67 are in a state of riding on the tips of the engagement claws 62, 63. The table 80a is lowered to the lowered position as it is.

As described above, the engaging edges 67a, 67a of the engaging pins 67-67 are in a state of riding on the tip end portions of the engaging claws 62, 63, so that the A-type conveying jig 51A conveys. It is connected to the carriage 52 in a suspended manner. Therefore, in each coupling device 60, the own weight of the transport jig 51A is added to both the engaging claws 62 and 63 via the engaging pin 67. Since the own weight of the transport jig 51A acts in the direction (clamping direction) in which the engaging claws 62 and 63 are closed, both engaging claws 62 and 63 are provided.
Is in a state of firmly biting into the engagement pin 67 by the own weight of the carrying jig 51A, whereby the carrying jig 51A is more firmly connected.

After the connection of the type A transfer jig 51A is completed in this way, the transfer carriage 52 is retracted and stopped at the type A article supply position (f). After that, the type A article supply lift 81A at the same position (f) is moved up to bring the table 81a on which the type A roof panel RPA is placed closer to the transport jig 51A from below.

When the class A roof panel RPA rises to a predetermined height, the lift 81A is stopped and the transfer jig 51
This kind of roof panel R by various gripping devices provided in A
Hold the PA. After that, the lift 81A is lowered to return the table 81a to the lowered position.

After the class A roof panel RPA is thus gripped by the transfer jig 51A, the transfer vehicle 52 is moved forward. At this time, the elevating rails 55, 55 of the elevating device are connected to the tips of the conveying rails 53, 53, and the conveying carriage 52 is
It moves forward from the transport rails 53, 53 until it gets on the lifting rails 55, 55.

After the carrier vehicle 52 has moved to the lifting device side, the lifting device is actuated and the lifting rails 55, 55 are lowered, whereby the carrier vehicle 52, the class A carrier jig 51A,
The A type roof panel RPA is integrally lowered, so that the A type roof panel RPA is supplied to the temporary mounting process. When the roof panel RPA is lowered to the temporary mounting position, the roof panel RPA is positioned with respect to the main body MB and transferred to the temporary mounting process side.

After the supply of the class A roof panel RPA is completed in this way, the lifting device operates and the lifting rails 55, 55
Is raised to the height of the transport rails 53, 53, and therefore the transport carriage 52 and the class A transport jig 51A are integrally raised to the transport level. After that, the transport vehicle 52 moves backward, moves to the A type article supply position (f) in order to transport the next A type roof panel RPA, and again grips the A type roof panel RPA, and then the predetermined position. Wait until the next conveyance at the position.

Next, in order to convey the roof panel RPB of the B type instead of the A type, the conveyance jig 51 is changed from the A type to the B type. Therefore, the carrier truck 52 is first moved to the type A jig exchange position (d), and the type A transport jig 51A is returned to the same position (d).

When the carriage 52 reaches the A-type jig exchange position (d), four sets of the decoupling devices 7 arranged at the same position (d).
Upper and lower edges 72a, 72b of the respective release blocks 72 of 0-70
In between, the roller 65a of the release lever 65 of the coupling device 60
Will be in each state. In this state, the A-type jig lift 80A is raised to slightly lift the A-type transport jig 51A. Then, the engagement edges 67a, 67a of the respective engagement pins 67 are lifted from the engagement claws 62, 63, whereby the both engagement claws 62, 63 are allowed to rotate in the opening direction.

Therefore, in the connection releasing device 70, when the cylinder 71 is pushed out and the releasing block 72 is lowered as shown by the chain double-dashed line in FIG. 24, the releasing lever 6 is released.
Since the roller 65a of No. 5 is pushed downward by the upper edge 72a, the release lever 65 rotates in the unclamping direction against the tension spring 66, whereby the engaging claws 62, 63 are released.
Rotates in the opening direction to unclamp the engagement pins 67 to 67.

Next, when the type A jig lift 80A is lowered, the type A carrying jig 51A is placed on the table 80a and is lowered, whereby the type A carrying jig 51A is moved from the carrying carriage 52. To be separated. Cylinder 7 after separation is completed
1 is retracted and actuated, and the release block 72 moves to the carrier truck 52.
Return it to a position where it will not interfere with the movement of. On the other hand, the jig lift 80A is stopped at the lowered position, and the type A transport jig 51A is stopped.
Is stored as is until next use.

Next, the transport carriage 52 from which the A-type transport jig 51A has been separated is retracted to the B-type jig exchange position (e), and then the jig lift 80B at this position (e) is moved. The B-type transport jig 51B placed on the table 80b is moved up to approach the transport carriage 52 from below. Hereinafter, similarly to the type A, the type B transport jig 51B is connected to the transport carriage 52 in a suspended state. With this, the transport jig 5
The replacement work from Class A to Class B of 1 is completed.

Next, the carrier truck 52 to which the class B carrier jig 51B is connected moves to the class B article supply position (G), and thereafter the class B article supply lift 81B is lifted in the same manner as class A,
Class B roof panel R supplied on the table 81b
The PB is gripped by the type B transfer jig 51B. After that,
The carrier truck 52 is moved forward, and thereafter, the type B roof panel RPB is transported to the temporary attaching step in the same manner as the type A roof panel RPB. After the transportation is completed, the transportation cart 52 is the B-class transportation jig 51.
Stand by with B connected.

The type B transfer jig 51B is replaced with the type A transfer jig 5
In order to replace it with 1A, the carrier truck 52 is moved to the type B jig replacement position (e), and four sets of disconnecting devices 70 to 70 provided at the same position (e) are used in the same manner as in the case of type A. The connection of the connecting portions 60 to 60 is released, whereby the B-type transport jig 51B is separated and returned to the table 80b of the B-type jig lift 80B. After that, the transport carriage 52 moves to the type A jig exchange position (d), and the type A transport jig 51A is connected to the transport carriage by the same procedure as described above.

As described above, according to the carrier device 50 of this embodiment, the carrier jig 51 can be separated from the carrier vehicle 52, so that the carrier vehicle 52 is reciprocated along a straight carrier path. Two types of roof panel R
P can be transported, and as a result, the transport route can be set in a smaller space as compared with the conventional branched transport route.

Further, the transfer jig 51 is replaced and the transfer carriage 5 is replaced.
Since it can be connected to two, even when transporting different types of roof panels RP, one transport vehicle 52 can be shared, which simplifies the device configuration and reduces the equipment cost compared to the conventional one. You can

In this respect, conventionally, for example, a transport route L as shown in FIG. 27 is set and a plurality of transport vehicles D to D provided for each type of roof panel RP are used properly. This conventional transport route L is adapted to transport two types (A type or B type) of roof panels RPA and RPB, and a part of the looped transport route L is converted into two routes L1 and L2. Branch, set the feed position S1 for type A on branch route L1, set the feed position S2 for type B on branch route L2, and install a transport jig dedicated for type A or type B on each route L1, L2. The two transport carriages D1 and D2 provided are arranged and the common route L0 is set.
By switching the path switching devices C and C provided at the branch points between the vehicle and the branch paths L1 and L2, either one of the transport carriages D1 and D2 is caused to travel to transport two types of roof panels RPA and RPB. It was configured to do.

As described above, in the related art, since the transport path L is looped and two transport vehicles are required to be exchanged for traveling, a part of the branch is configured, which requires a large space for that, and As a result, the transporting distance and the forwarding distance of the transporting carriage D became long, and it was difficult to transport efficiently.

Further, since the transport carriage D is integrally provided with the transport jig, it is necessary to prepare not only the transport jig but also the transport carriage D for each type of the roof panel RP, and as a result, the equipment cost is reduced. There was a problem that caused soaring prices.

Next, according to the exemplified transporting device 50, the engaging pins 67 to 67 provided on the transporting jig 51 cause the transporting carriage 5 to move.
By entering from below between the engaging claws 62 and 63 of the coupling devices 60 to 60 provided in 2, and engaging the engaging edges 67a and 67a on both the engaging claws 62 and 63 while engaging them,
The transfer jig 51 is connected to the transfer carriage 52 in a suspended state. The engaging pins 67 to 67 are provided on the carrying jig 51, and the engaging claws 62 and 63 that clamp the engaging pin 67 are rotatable up and down. It acts as a force for rotating the engagement pin 67 more firmly in a direction of sandwiching the engaging pin 67, that is, a biting direction through the engagement pin 67 and the engaging claw 62, 63. The engagement state of 67 and the connected state of the transfer jig 51 are firmly held.

As described above, the transport jig 51 is firmly connected to the transport carriage 52 by positively utilizing the own weight of the transport jig 51.
1 can be firmly connected without the risk of dropping, and in this respect, the transfer device 50 has the roof panel R as illustrated.
Particularly suitable for transporting P.

However, the illustrated conveying device 50, particularly the connecting device 60, is not limited to the illustrated conveying of the roof panel RP, but can be applied to the case of conveying other conveyed articles, particularly heavy articles in a hanging manner. Needless to say.

Further, in the illustrated embodiment, the type A or B
The case of carrying two kinds of articles has been described, but it can be applied to the case of carrying more kinds of articles, and a carrying jig is prepared and replaced according to the kind of articles. Similar effects can be obtained by setting the position to be turned on and the position to feed the article along the transport path.

Further, the transfer route does not necessarily have to be a straight line, and can be formed into a curved shape in consideration of the installation space or the like, and can also be a simple annular route having no branching route as in the conventional case. Is.

[Brief description of drawings]

FIG. 1 is a plan view of a preset process according to the embodiment of the present invention. Both side members are shown in a horizontal position.

FIG. 2 is a rear view of the preset process, showing a state in which the side member is in a vertical posture.

FIG. 3 is a plan view of a temporary attachment process.

FIG. 4 is a rear view of the temporary attachment process, which is a view taken along the arrow IV in FIG.

FIG. 5 is a side view of a transfer device and a temporary attachment process. On the right side of the transport path, the temporary attachment process is shown as viewed from the direction of arrow V in FIG.

6 is a side view of the presetting device on the right side in the process advancing direction, as viewed from the direction of arrow VI in FIG. 2;

FIG. 7 is a side view of the coupling device on the right side in the process advancing direction, also seen from the direction of arrow VI in FIG.

FIG. 8 is a plan view of the set position holding device and the connection device on the right side in the process advancing direction, as seen from the direction of arrow VIII in FIG.

9 is a side view of the set position holding device and the coupling device on the right side in the process advancing direction, which is a view taken along the line IX in FIG.

10 is a side view of the holder of the set position holding device, which is a view taken in the direction of arrow X in FIG. 9.

FIG. 11 is a vertical cross-sectional view showing a state where the lower portion of the side member is pressed against the underbody by the holding block.

FIG. 12 is a side view showing a mounting portion of the bending edge with respect to the main body and a bending state of the bending edge (1
FIG. 2) is a sectional view taken along line (12).

FIG. 13 is a side view of a main body in which a part of a side member covers a part of an underbody from above, and (13)-(13) cross-sectional views of the main body.

FIG. 14 is a vertical cross-sectional view showing a laterally collapsed state of the side member, which is a cross-sectional view taken along line (14)-(14) of FIG.

FIG. 15 is a plan view of the folding device.

16 is a rear view of the side member positioning jig and the side gate, which is an enlarged view of a central portion of FIG.

FIG. 17 is a side view of the side member positioning jig and the side gate, as viewed from the direction of arrow (17) in FIG.

18 is a side view of the clamp device for positioning in the width direction of the body, as seen from the direction of the arrow (18) in FIG.

19 is a plan view of the clamp device for positioning the body in the longitudinal direction, as viewed from the direction of arrow (19) in FIG.

FIG. 20 is a schematic view of a side member positioning jig changing device as viewed from the back side.

FIG. 21 is a side view of the roof panel transport device as viewed from the side in the transport direction.

FIG. 22 is a side view of the roof panel transport device as viewed in the transport direction.

FIG. 23 is a side view of the decoupling device 70 as viewed from the side in the transport direction.

FIG. 24 is a side view of the coupling device 60 seen along the transport direction.

FIG. 25 is a side view showing a released state of the coupling device 60.

FIG. 26 is a plan view of the transport path according to the embodiment of the present invention.

FIG. 27 is a plan view of a conventional transport path.

[Explanation of symbols]

MB ... Main body UB ... Under body SM ... Side member 1 ... Under body setting jig 5 ... Side member presetting device 7 ... Set position holding device 10 ... Bending device 11 ... Coupling device 20 ... Side member positioning jig 20A ... A Type, 20B ... Type B 22 ... Side gate 29 ... Guide roller (for positioning body width direction) 35 ... Clamping device (for positioning body longitudinal direction) 35A ... Type A storage shelf, 35B ... Type B storage shelf 40 ... Exchanger 50 ... Roof panel transfer device 51 ... Transfer jig 51A ... Transfer jig for A type, 51B ... Transfer jig for B type 52 ... Transport carriage 53 ... Transfer rail 60 ... Coupling device 65 ... Release lever 70 ... Disconnection device 72 ... Release block 80 ... Jig lift 80A ... A class jig lift, 80B ... B class jig lift, 81A ... A Seed article lift, 81B ... B Seed article lift RP ... Roof panel RPA ... Class A roof panel (Class A article) RPB ... Class B roof panel (Class B article)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takao Kuraishi 100 Kanayama, Ichiriyama-cho, Kariya city, Aichi prefecture Toyota Auto Body Co., Ltd. (72) Toru Kaneko 100 Kanayama, Ichiriyama-cho, Kariya city, Aichi prefecture Toyota body Co., Ltd. (72) Inventor Katsuya Yoshikawa 100 Kanayama, Ichiriyama Town, Kariya City, Aichi Prefecture Toyota Body Co., Ltd.

Claims (7)

[Claims] 1. An apparatus used in a main body assembling process of an automobile including a preset process of setting a side member to an underbody and a temporary attaching process of temporarily attaching a side member to the underbody, wherein the underbody is mounted. And a side member presetting device for setting the side member to the underbody in the presetting step, and an underbody setting jig that moves from the presetting step to the temporary mounting step. A set position holding device that moves the preset position from the preset step to the temporary attachment step together with the underbody setting jig while holding the set position of the side member, and positions the side member with respect to the underbody in the temporary attachment step. Rhino for The main body assembling device of a motor vehicle, characterized in that a structure in which a member positioning jig. 2. The main body assembling apparatus according to claim 1, wherein the side member presetting device is provided with a folding device for folding a bending edge provided on the underbody, and the folding is performed in a set state of the side member. An apparatus for assembling a main body of an automobile, characterized in that the bending edge is bent by a bending device so as to sandwich an end portion of the side member to prevent the side member from falling. 3. The main body assembly device according to claim 1, wherein the set position holding device holds the set position of the side member with respect to the underbody by pressing the rocker panel portion of the side member obliquely upward. A main body assembly device for an automobile, which is characterized in that it has a structure. 4. The main body assembling apparatus according to claim 1, wherein the set position holding device is movable independently of the underbody setting jig, and is connected to the underbody setting jig. An apparatus for assembling a main body of an automobile, characterized in that the apparatus is configured to be movable together with the underbody. 5. The assembly device according to claim 1, wherein the side member positioning jig is attached to a side gate that moves in a direction orthogonal to the body transport direction, and is attached to the side member that has been carried into the temporary mounting step. An apparatus for assembling a main body of a vehicle, characterized in that the apparatus is configured to approach or separate from each other. 6. The main body assembling apparatus according to claim 5, wherein a plurality of side member positioning jigs are prepared, and the side member positioning jigs are arranged side by side along the body transport direction and are movable integrally in the same direction. An apparatus for assembling a main body of an automobile, characterized in that a side member positioning jig which is moved in any direction and arbitrarily selected can be replaced with respect to a side gate. 7. The main body assembling apparatus according to claim 6, wherein the side member positioning jig is a body for the side gate by a roller for carrying the side member positioning jig provided on the side gate. An apparatus for assembling a main body of an automobile, characterized by being positioned in a width direction and a body height direction.