JPH07110424B2 - Front panel loading device for automobile body welding equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION A. Objects of the Invention (1) Field of Industrial Application The present invention relates to a welding apparatus for an automobile body, which is an apparatus for positioning a front panel, which is a constituent body component of the automobile body, into a welding station. It is about.

(2) Conventional Technology Generally, when manufacturing an automobile body (white body), a floor panel, a left side panel, a right side panel, and a roof panel, which are body parts of the automobile body, are provided at a positioning and welding station provided on a conveyance path. Etc., the body parts are positioned there by a plurality of positioning devices, and they are integrally spot-welded by a plurality of welding robots.

(3) Problems to be Solved by the Invention However, since a plurality of body parts feeding devices are gathered around the positioning and welding station, and a plurality of vehicle body positioning devices and a plurality of welding robots are arranged. The above devices are required to have a simple structure and be compact without impairing the original functions.

Therefore, it is an object of the present invention to provide a loading device for a front panel, which is one of the body parts of an automobile body, to meet the above demand.

B. Configuration of the Invention (1) Means for Solving Problems According to the present invention, a floor panel, a left side panel, and a right side panel are provided at a positioning station and a welding station arranged in the middle of a conveyance path for the purpose of achieving the above object. , A front panel, a roof panel, and other body parts, which are positioned and welded integrally with each other in an automobile body welding apparatus, in which a front part is provided in front of a carrier table such as a carrier truck moving on the carrier path. It comprises a front panel supply device for supplying a panel and a front panel reception device for receiving the front panel from the front panel supply device and setting the front panel at a welding position, the front panel supply device being orthogonal to the transport path. And a front side of the front side of the transfer table, which is supported by a horizontal transfer path provided so as to be capable of reciprocating on the horizontal transfer path. And a front panel carrier that can be put into, and the front panel receiving apparatus and reception arm provided freely undulating front end of the transport stand, the more the front panel clamp jig provided in the receiving arms.

(2) Action The front panel carrier holding the front panel is supplied to the front of the carrier on the carrier path along the lateral carrier path.
Then, the receiving arm at the front end of the carrier stands upright, receives the front panel from the front panel carrier, clamps it, and inserts it into a predetermined position on the carrier.

(3) Embodiment One embodiment of the present invention will be described below with reference to the drawings.

In the following description, "front, rear" and "left, right" are based on the traveling direction of the body parts.

The positioning welding apparatus of the present invention is a structural member of an automobile body (white body) B shown in an exploded view in FIG. 1, that is, a floor panel Fl, left and right side panels Sl, Sr, a roof panel Ro, a roof rail Rr and a front panel Fr. Are positioned relative to each other and welded together to form the white body B.

2 and 3, in the preset station St ₁ , the floor panel Fl that has been transported and the pair of left and right side panels Sl and Sr are temporarily fixed on the transporting truck Tr, set, positioned, and welded at the welding station ST. _The front panel Fr supplied from the front panel supply device Sf is temporarily fixed to the front surface of the front panel Fr. The floor panel Fl, the left and right side panels Sl and Sr, and the front panel Fr are transported to the positioning and welding station St ₂ . And wherein after the tacking tripartite is the roof panel Ro and the roof rail Rr supplied from the roof panel and the roof rail supply device S _R together are positioned clamped is positioned set thereon, is spot welded by welding robot Rob ... White body B is formed. The white body B is placed on the carrier truck Tr and transported to the payout station St ₃ .

2 and 3, the pit Pi formed on the floor panel Fl
A transport path 1 is installed in the. On the transport path 1, two transport rails 2 and 2 are laid in the longitudinal direction via rail receivers 3 and 3 (Fig. 5), and the transport truck Tr is in front of the transport rails 2 and 2,
It is provided so as to be able to travel in the rear direction (X direction).

To carry end (second and third Fig rightmost) 1 ₁ of the transport path 1, the floor panels Fl and the left, right side panel Sl, preset station St ₁ Sr, positioning in the middle portion, the welding station St _2, Further, at the carry-out end (the left end in FIGS. 2 and 3), a payout station St ₃ is arranged. The transport path 1
Above the conveyor, the overhead conveyor Co
Is provided. A transport hanger 4 is suspended from the overhead conveyor Co. The transfer hanger 4 hangs both a floor panel Fl and a pair of left and right side panels Sl, Sr to transfer them to the preset station St _{1, and} at the payout station St ₃ lifts a welded white body B. This is conveyed to the next station (not shown).

As clearly shown in FIG. 5, the transfer hanger 4 includes a base frame 5 suspended on an overhead conveyor Co, and left and right swing levers 7, 7 pivotally supported at both ends of the base frame 5. Left and right open / close frame that can be opened and closed via the
8 and 8, the left and right opening / closing frames 8 and 8 are forced to the left and right by the expansion and contraction operation of the base frame 5 and the expansion and contraction cylinders 9 and 9 connected between the left and right swing levers 7 and 7. It can be opened and closed (solid line in FIG. 5, chain line).

Hook-shaped left and right side panel receivers 10 and 10 are integrally projected toward the outside at the vertical middle portions of the left and right opening / closing frames 8 and 8, and the floor is provided at the lower ends of those frames 8 and 8. The panel receivers 11 and 11 are integrally provided so as to project inward, and
As shown in the figure, the left and right side panel receivers 10 and 10 are respectively suspended with left and right side panels Sl and Sr, and the floor panel receivers 11 and 11 support a floor panel Fl substantially horizontally. .

Next, referring to FIGS. 2 and 3 together with FIGS. 4 and 5, the configuration of the preset station St ₁ will be described in more detail. On the left and right sides of the conveyance path 1, a pair of columns 12 and 12 are erected. , These stanchions 12,12 have side panel drop lifters 13,13
Also, floor panel drop lifters 14 and 14 are provided so as to be able to move up and down. Each side panel drop lifter 1
3 and 13 are respectively equipped with two-stage rodless cylinders 15 and 16 that can expand and contract with respect to the transport hanger 4,
At the inner ends of the rodless cylinders 15 and 16, there are hooks 1 that can be forcibly turned up and down by rotary actuators 17 and 17.
8 and 18 are provided, and the left and right side panels Sl and Sr are conveyed by the extension operation of the two-stage rodless cylinders 15 and 16 and the operation of the rotary actuators 17 and 17 to transfer the left and right side panels Sl and Sr.
You can receive it from Further, the floor panel drop lifters 14 and 14 are also provided with rodless cylinders 19 and 19 capable of expanding and contracting with respect to the transfer hanger 4, and the receiving members 20 having a concave cross section are provided at the upper ends of the cylinders 19 and 19. 20 is provided so as to be adjustable up and down, and the floor panel drop lifters 14 and 14 are moved up and down, and the rodless cylinder 1
The floor panel Fl can be received from the transport hanger 4 by expanding and contracting 9,19.

As shown in FIGS. 4 and 5, on the carrier truck Tr, in front of it,
A pair of front lifting cylinders 21 and 21 having front positioning pins P ₁ and P ₂ at the upper end are erected, and a pair of rear lifting cylinders 22 having rear positioning pins P ₂ and P ₂ at the upper end are provided at the rear thereof. , 22 are erected, and the front and rear positioning pins P ₁ , P
_1, P _2, before the P ₂ bored in the floor panel Fl, a rear pin holes 23,23,24,24 (FIG. 1) are respectively inserted, the floor panel Fl is positioned set on the conveying carriage Tr To be done.

As shown in FIGS. 4 and 5, on the left and right sides of the carrier truck Tr, there are four left and right temporary clamps 25l, ...
And 25r ... are lined up at intervals. Each of the left and right temporary clamps 25l, 25r ... has a clamp piece 27 pivotably supported by a bracket 26 fixed to the side edge of the carrier truck Tr.
This clamp piece 27 is forcibly opened and closed by a telescopic cylinder 28 connected thereto. The left and right temporary clamps 25l ..., 25r ... are the floor panel Fl mounted on the carrier truck Tr and the left and right side panels Sl, S as shown by the chain line in FIG.
The r can be clamped on the carrier truck Tr and temporarily clamped.

A drive motor 30 is provided in the central portion of the carrier truck Tr, and a drive pinion 31 fixed to a driving shaft of the motor 30 is provided with a rack 32 provided on one rail receiver 3 along its longitudinal direction (X direction). The drive carriage 30 can be reciprocally moved along the transport rails 2 and 2 by the forward and reverse drive of the drive motor 30.

As shown in FIGS. 2 and 3, a box-shaped machine frame 33 is installed so as to straddle the transport path 1 at the welding station St ₂ positioned in front of the preset station St ₁ . When the front panel supply device Sf is provided on the end surface of the machine casing 33 near the preset station St ₁ , the structure of the device Sf will be described below. The frame member 33 ₁ of the machine frame 33 is laterally placed the lateral conveyance path 34 of the crossbeam, the transport rails 35, 35 and the rack 36 of the two rows on the front of the lateral transport path 34 is substantially the conveying path 1 They are laid orthogonally along the Y direction. The transport rail
A front panel carrier 37 is reciprocally supported by 35 and 35 as shown in FIGS.
A drive motor 38 is provided in the drive motor 38, and a drive pinion 39 of the motor 38 is meshed with the rack 36. A support arm 40 is supported on the front panel carrier 37 so as to be swingable downward and forward and backward, and a clamp support frame 41 provided on the support arm 40 clamps the periphery of the front window hole 44 of the front panel Fr (see FIG. 7). A pair of clamp jigs 42, 43 for) are supported so that the swing can be adjusted. As shown in FIG. 3, the front panel carrier 37 has a carry-in end of the lateral transport path 34 (upper end in FIG. 3).
Stand by and clamp the front panel Fr, and then run in the direction of arrow a in Fig. 3 toward the carry-out end,
Are transported to the front of the carrier truck Tr and, as shown in FIG. 4, the floor panel Fl and the left and right side panels Sl, S on the truck Tr.
Face the front edge of r and set it there.

As clearly shown in FIG. 4, in front of the carrier truck Tr, a floor panel Fl transported by the front panel supply device Sf is provided.
A front panel receiving device Re for receiving the is provided. As shown in FIGS. 4, 6, and 7, the front panel receiving device Re is pivotally supported 44, 4 so as to be capable of undulating on both left and right front edges of the carrier truck Tr.
4 a pair of receiving arms 45, 45, an undulating cylinder 46 that is connected between the arms 45, 45 and the carrier truck Tr to undulate the receiving arms 45, 45, and the pair of receiving arms 45, 45. Upper temporary clamp clamp jigs 47, 47 provided at the tips of 45 and lower temporary clamp clamp jigs 4 provided at the lower parts of the receiving arms 45, 45, respectively.
It consists of 8,48. The upper and lower temporary fixing clamp jigs 47, 47,
Each of 48 and 48 includes a fixed clamp piece, and a movable clamp piece that is opened and closed by expansion and contraction of a telescopic cylinder with respect to the fixed clamp piece.

As clearly shown in FIGS. 6 and 7, when the hoisting cylinder 46 is expanded and contracted, the receiving arms 45 and 45 are erected and the upper and lower temporary fixing clamp jigs 47, 47, 48 and 48 are fixed to the floor panel Fl. And left,
Front panel F located at the front edge of the right side panel Sl, Sr
Both middle and lower sides of r can be clamped. Then, the front panel Fr is temporarily set on the carrier truck Tr. The front panel supply device Sf and the front panel receiving device Re are arranged in parallel in the Y direction as shown in FIG. 7 and do not interfere with each other.

Floor panel Fl, left and right side panels Sl, S as described above
The carrier truck Tr, which temporarily holds r and the front panel Fr at a predetermined position, is driven by the drive motor 30 to be positioned from the preset station St ₁ and self-propelled to the welding station St ₂ .

Next, the configuration of the positioning and welding station St ₂ will be described with reference to FIGS. 2 and 3 and FIGS. 8 to 12.

This positioning and welding station St ₂ has a carrier truck Tr.
Lifting device Lf that lifts and holds the vehicle in the lift position, roof panel and roof rail supplying device for supplying roof panel Ro and roof rail Rr onto carrier truck Tr
S _R , floor panel Fl, left and right side panels Sl, Sr, front panel Fr, roof rail Rr, and roof panel Ro Positioning device groups L _{1 to} L ₁₅ and 2 for left and right for firmly positioning at the welding position Automatic welding robot R
ob ... is equipped.

As shown in FIGS. 10 and 11, the lift device Lf is a carrier truck Tr.
A plurality of lifters 50 are arranged in two rows in the front-rear direction at intervals, and push-up pins are provided at the upper ends of these lifters 50.
51 ... are provided, while a plurality of receiving seats 52 ... that receive the push-up pins 51 ... Are provided on the lower surface of the carrier truck Tr. Then, by simultaneously raising the plurality of lifters 50 ..., the push-up pins 51 ... Engage with the receiving seats 52 ...
As shown in FIGS. 10 and 11, the carrier truck Tr can be lifted and held at that position.

Next, the structure of the roof panel and the roof rail supply device S _R will be described. Referring to FIGS.
A transport hanger 54 extending in the Y direction is installed on the top of the transport path 33 so as to cross the transport path 1. Two guide rails 55, 55 are laid downward on the lower surface of the transfer hanger 54, and a self-propelled table 56 capable of self-propelled along the guide rails 55, 55 is laid on the guide rails 55, 55. Suspended. As clearly shown in FIG. 8, a transportation motor 58 and a lifting motor 59 are held on the underframe 57 of the self-propelled table 56. The pinion 60 fixed to the driving shaft of the transfer motor 58 is meshed with the rack 61 fixed to the side surface of the transfer hanger 54 along the longitudinal direction thereof, and the drive of the transfer motor 58 drives the pinion 60 and the rack 61. The self-propelled table 56 can be self-propelled along the guide rails 55, 55 via. On one side of the underframe 57, a transmission shaft 62 is rotatably supported at right angles to the self-propelled direction via bearings 63, and the transmission shaft 62 is provided with the lifting motor 59 via gears 64 and 65. Is linked to. Near both ends of the transmission shaft 62,
A pair of slide bearings 66, 66 is fixed to the underframe 57, and a pair of elevating frames 67, 67 is engaged with the slide bearings 66, 66 so as to be vertically movable. Racks 68, 68 are vertically fixed to the inner surfaces of the lifting frames 67, 67.
Drive gears 69, 69 fixed to both ends of the transmission shaft 62 are meshed with 8, 68. Therefore, by driving the lifting motor 59 forward and backward, the pair of lifting frames 67, 67 can be moved up and down in synchronization with each other. The pair of lifting frames 6
At the lower part of 7,67, as clearly shown in FIGS. 8 and 11, holding frames 70 and 70 of the roof panel Ro are respectively supported, and these holding frames 70 and 70 respectively have suction cups 71 and 71 and restraining members. The pieces 72, 72 are provided so as to be adjustable respectively, and the suction cups 71, 71 adsorb and hold the roof panel Ro and hold down the pieces 72, 72.
72 abuts on both sides of the roof panel Ro and regulates its position. The roof panel Ro is transported along the transport hanger 54 at the transport level shown in the solid line position in FIG. 8 and lowered to the set position shown in the chain line position in FIG.
It is set on the upper edges of the right side panels Sl, Sr and the front panel Fr. A roof rail holding device 74 for transporting the roof rail Rr (FIG. 1) together with the roof panel Ro is attached to the rear portion of the underframe 57 of the self-propelled table 56.

Next, the structure of the roof rail holding device 74 will be described mainly with reference to FIG. 8. A support frame 75 is supported on the rear portion of the underframe 57, and a lateral expansion / contraction cylinder 76 allows movement and adjustment in the Y direction. Further, a clamp frame 77 is hung on the support frame 75, and can be vertically adjusted in the Z direction by a vertical telescopic cylinder 78. Below the clamp frame 77, a pair of roof rail clamps 79, 79 are supported. Each of these roof rail clamps 79, 79 is composed of a fixed clamp piece 80, a movable clamp piece 81 having a barrel rotatably supported by the fixed clamp piece 80, and a telescopic cylinder 82 for rotating the movable clamp piece 81. Movable clamp piece 81
As shown in FIG. 8, the roof rail Rr can be clamped between the clamp pieces 80 and 81 by rotating in the closing direction (the direction opposite to the arrow b).

Eighth roof panel Ro as shown in FIG solid self table 56 and holding the roof rail Rr, the conveying path 1 of the positioning as shown in FIG. 11 from the one side, on the conveyance carriage Tr of the welding station St ₂ Be transported to. Then, by operating the vertical telescopic cylinder 78 of the roof rail holding device 74, the roof rail Rr
On the roof rail mounting parts 83, 83 at the upper rear edges of the left and right side panels Sl, Sr.
Fig. 8 Rotate in the direction of arrow b to rotate the roof rail clamp 79
Unclamp. After setting the roof rail Rr on the roof rail mounting parts 83, 83, the roof rail holding device
74, the lateral expansion cylinder 76 is extended to allow the device 74 to escape rearward so as not to interfere with the setting of the roof panel Ro in the next step as shown by the chain line in FIG. If it caused to subsequently lower the roof panel Ro by operation of the roof pressing panel and a roof rail supply device S _R of the elevation motor 59 to the chain line position from the FIG. 8 the solid line position, the roof panel Ro is transport vehicle
It is set on the left and right side panels Sl and Sr on the Tr, the front panel Fr and the roof rail Rr.

With the above, positioning and welding station St ₂
The floor panel Fl, the front panel Fr, the left and right side panels Sl, S that constitute the white body B are provided on the carrier truck Tr.
r, the roof rail Rr, and the roof panel Ro are all set in predetermined positions.

Then, after positioning them by a positioning device having a clamp jig or the like at regular welding positions, spot welding is automatically performed by an automatic welding robot Rob ... Separate from the positioning device.

Next, the configuration of the positioning device having a clamp jig etc.
This will be described with reference to FIGS.

In FIG. 10 and FIG. 11, at the positioning and welding station St ₂ , brackets 85 ₁ , 85 ₁ and 85 ₂ , 85 ₂ are fixedly attached to the left and right sides of the conveying path 1, respectively.
5 ₁ , 85 ₁ and 85 ₂ , 85 ₂ have left and right positioning frames
F ₁ and F ₂ are pivotally supported 86 ₁ and 86 _{2 so} that they can be raised and lowered in a direction (Y direction) orthogonal to the self-propelled direction (X direction) of the carrier truck Tr. The left and right positioning frames F ₁ and F ₂ are composed of plate-like closed frames. Brackets 85, 85 and left and right positioning frames F ₁ , F
Between the _two , the undulating cylinders 87 ₁ , 87 ₁ and 87 ₂ , 87 respectively
₂ are linked together and these cylinders 87 ₁ , 87 ₁ and 87 ₂ , 87
The expansion and contraction operation of ₂ can be undulating pivoting in FIG. 11 the direction of the arrow c _1, c _2. The front positioning units L _{1 to} L ₉ are attached to the front half of the left and right positioning frames F ₁ and F ₂ (the left half of FIG. 10), and the rear half thereof (the right half of FIG. 10). The rear positioning device group L _{10 to} L ₁₅ is attached to. The positioning device groups attached to the left and right positioning frames F ₁ and F ₂ have the same configuration. The group of positioning devices provided on the right positioning frame F ₂ will be described below.

Next, the configuration of the front positioning device group will be described with reference to FIGS. 10, 11 and 13 to 24. The front positioning device group includes a first positioning device L ₁ to a ninth positioning device L ₉ . The first positioning device L ₁ is composed of a clamp jig and is for clamping the upper edge flange 90 of the front panel Fr and the front edge flange 91 of the roof panel Ro, and is shown in FIGS. As shown in the right welding frame
A bracket 92 is fixed to the inside of the upper portion of the front edge of F ₂ , and an L-shaped rocking lever 93 that projects inward so that the bracket 92 can enter the temporary assembly body Bo can be rocked vertically. A third cylinder Cy which is pivotally supported 94 and swingably drives the swing lever 93 between the bracket 92 and the positioning frame F _2.
3 are connected. Further, a stopper 95 is provided between the bracket 92 and the swing lever 93 to regulate the upper limit position of the swing lever. A clamp support body 96 is fixed to the tip of the swing lever 93, and a pair of clamp pieces 97, 98 are pivotally supported on the clamp support body 96 with a pivot shaft 99 so as to be openable and closable with respect to each other. Further, the clamp support 96 has the above-mentioned clamp pieces 97, 98.
The first and second cylinders Cy that are connected to and operate to open and close them
₁ , Cy ₂ is supported. And the pair of clamp pieces 97, 9
8 is the front edge flange 91 of the roof panel Ro and the front panel F
The overlapping flange portion of the upper edge flange 90 of r is firmly clamped, and this portion is spot-welded Wp by an automatic welding robot Rob described later as shown by the chain line in FIG. The second positioning device L ₂ also includes a clamp jig, and includes the side edge flange 101 of the front panel Fr and the right side panel Sr (left side panel Sl).
For clamping the front edge flange 102 of the
As shown in FIGS. 3 and 18, a bracket 103 is fixed to the upper part of the front edge of the positioning frame F ₂ on the right side, a clamp support 104 is fixed to the bracket 103, and a pair of clamp pieces is attached to the clamp support 104. 105 and 106 are pivotally supported by pivots 107 and 108 so as to be openable and closable with respect to each other. Also the clamp support 104
The fourth and fifth cylinders Cy ₄ and Cy _{5 that} are respectively connected to the clamp pieces 105 and 106 to open and close them are supported by the. The pair of clamp pieces 105 and 106 firmly clamps the overlapping flange portion of the side edge flange 101 of the front panel Fr and the front edge flange 102 of the right side panel Sr (left side panel Sl), and the portion is chained in FIG. As shown in, spot welding Wp is performed by the automatic welding robot Rob described later.

Next, the third positioning device L ₃ is also composed of a clamp jig, and is for clamping the peripheral flange portion 109 of the front window hole 44 of the front panel Fr.
As shown in the figure, the bracket 110 is fixed to the upper edge of the front part of the positioning frame F ₂ . An end portion of the bracket 110 extends laterally in front of the temporary assembly body Bo, extends near the front window hole 44 of the front panel Fr, and a clamp support 111 is pivotally supported at the tip of the bracket 110. Then, the seventh cylinder Cy ₇ connected between them rotates back and forth with respect to the temporary assembly body Bo. Clamp support
A fixed clamp piece 112 forming a pair is fixed to 111, and a movable clamp piece 113 is pivotally supported 114, and a sixth clamp for opening and closing the clamp piece 113 is provided between the movable clamp piece 113 and the clamp support 111. The cylinder Cy ₆ is supported. The operation of the seventh cylinder Cy ₇ causes the clamp support 111 to rotate to the clamp position as shown in FIGS. 13 and 14, and the sixth cylinder Cy ₆
Thus, by closing the movable clamp piece 113, the peripheral flange portion 109 of the front window 44 of the front panel Fr can be clamped by the pair of clamp pieces 112, 113.

A fourth positioning device L ₄ is provided on the positioning frame F ₂ below the third positioning device L _{3 including} the clamp jig. This 4th positioning device L ₄ is a front panel
A pair of headlight holes 116 formed in Fr are used to position the front panel Fr at a regular position, and as shown in FIGS. 13, 14, 19 a positioning frame F ₂
A support member 118 is fixed to a bracket 117 fixed to the front edge of the support member 118, and a positioning member 119 is pivotally supported on the support member 118 so that the positioning member 119 can rotate back and forth.
The eighth cylinder Cy ₈ supported by 118 is connected. When the eighth cylinder Cy ₈ is extended, the support 118 and the stopper 121 provided on the positioning member 119 are engaged with each other so that the positioning member 119 faces the headlight hole 116 as shown in FIGS. The taper guide pieces 122 and 122 made of elastic material provided above and below the positioning member 119 are engaged with the upper and lower edges of the head ride hole 116 to position the front panel Fr in the upward direction.

Below the fourth positioning device L ₄ , the positioning frame F ₂
A fifth positioning device L ₅ is provided at the front edge of the. The fifth positioning device L ₅ is composed of a clamp device, and includes a side edge of the front panel Fr indicated by a chain line in FIGS. 13, 14, 20 and a right side panel Sr.
(Left side panel Sl) is used to clamp the overlapping engagement portion 124 with the front edge, and the clamp support 126 is rotated around the vertical axis on the bracket 125 fixed to the inner surface of the front edge of the positioning frame F _2. A tenth cylinder Cy _{10 which} is rotatably supported 127 and connected to the clamp support 126 is connected, and the clamp support 126 is rotated by the operation of the tenth cylinder Cy ₁₀ . A stopper 128 for restricting the clamp position of the clamp support 126 is provided between the clamp support 126 and the bracket 125. A fixed clamp piece 129 and a restraining piece 130 are fixed to the clamp support 126, and a movable clamp piece 131 is pivotally supported 132 so that it can be opened and closed.
131 includes a ninth cylinder Cy ₉ provided on the clamp support 126.
Are connected. Clamp support as shown in Figure 20
When the movable clamp piece 131 is rotated in the closing direction after the 126 is rotated to the clamp position, the overlapping engagement portion between the side edge of the front panel Fr and the front edge of the left side panel Sl (right side panel Sr) is formed.
The fixed clamp piece 129, the pressing piece 130, and the movable clamp piece 131 are clamped at 124 to position them.

A sixth positioning device L ₆ shown in FIGS. 13 and 21 is composed of a clamp jig and has a lower edge flange portion 133 of the right side panel Sl (left side panel Sr) and a side edge having a raised portion of the floor panel Fl. Clamps the flange 134 and
A clamp support 136 is fixed to the bracket 135 fixed to the front edge of the positioning frame F ₂ , a fixed clamp piece 137 and a restraining piece 138 are fixed to the support 136, and a movable clamp piece 139 is rotated around the horizontal axis. The movable clamp piece 139 is rotatably and pivotally supported by the eleventh cylinder Cy ₁₁ supported by the vertical frame of the positioning frame F ₂ . Then, the movable clamp piece 139 is opened and closed by the operation of the 11th cylinder Cy ₁₁ , and as shown in FIG. 21, the lower edge flange portion 133 of the right side panel Sr (right side panel Sl).
The overlapping flange portions of the side edge flange portion 134 of the floor panel Fl are clamped to position them, and the overlapping flange portions are spot-welded Wp by the automatic welding robot Rob as shown by the chain line in FIG.

As shown in FIG. 10, a plurality of seventh positioning devices L ₇ are provided on the upper edges of the positioning frames F ₁ and F ₂ at intervals in the front-rear direction.
Are provided respectively, and the seventh positioning device L ₇ is composed of a clamp jig, and as shown in FIG. 22, the upper edge flange portion 142 of the right side panel Sr (left side panel Sl) and the front side. It is for positioning and clamping the side edge flange portion 143 of the panel Fr, and one of the seventh positioning devices L ₇ provided on the right positioning frame F ₂ is
To describe with reference to FIGS. 13 and 22, upper and lower clamp supports 145 and 146 are fixed to the bracket 144 that is erected from the upper edge of the positioning frame F ₂ . On the upper clamp support 145, a movable clamp piece 147 is pivotally supported 148 so as to be openable and closable around a horizontal axis, and a twelfth cylinder Cy ₁₂ that opens and closes the movable clamp piece 147 is supported. On the other hand, a fixed clamp piece 149 corresponding to the movable clamp piece 147 is fixed to the lower clamp support body 146, and a holding arm 150 is pivotally supported 51 rotatably around a horizontal axis. The restraining arm 150 has a thirteenth portion supported by the bracket 144.
Cylinder Cy ₁₃ is connected, and when the cylinder Cy ₁₃ is actuated, the 22nd cylinder is activated.
It is rotated in the direction of the arrow in the drawing, and the inner winding portion 152 at the side edge of the roof panel Ro is held down from the inside. A side edge flange portion 143 of the roof panel Ro is provided between the fixed and movable clamp pieces 149 and 147.
And the upper edge flange portion 142 of the right side panel Sr (left side panel Sl) and the overlapping flange portion can be clamped to position them, and the overlapping flange portion is an automatic welding robot as shown by the chain line in FIG. Spot welded Wp by Rob.

As shown in FIG. 10, the vertical frame of the positioning frame F ₂ is provided with a plurality of eighth positioning devices at intervals in the vertical direction.
L _8, L ₈ is provided. This device L ₈ is composed of a clamp jig, and clamps the front and rear flange portions 155, 156 of the pillar 154 (Fig. 23) of the right side panel Sr (left side panel Sl) to the right side panel Sl (left side panel Sr). As shown in FIG. 23, the bracket 157 which is fixed to the vertical frame of the positioning frame F ₂ and extends in the horizontal direction is positioned in the front and rear directions with a space in the front-back direction.
The rear clamp supports 158, 159 are fixed and these supports 1
The opposing surfaces of 58 and 159 are formed with restraining surfaces 158 ₁ and 159 _{1 that} come into contact with the front and rear surfaces of the pillar 154. Front and rear clamp support 15
Fixed clamp pieces 160, 161 are respectively formed on 8, 159, and movable clamp pieces 162, 163 corresponding to the fixed clamp pieces 160, 161 are pivotally supported 164, 165, and these movable clamp pieces 162, 163 are supported by the bracket 157. The fourteenth and fifteenth cylinders Cy ₁₄ and Cy ₁₅ are respectively connected to and are opened / closed by them. The eighth positioning device L ₈ ... Clamps the front and rear flange portions 155, 156 of the pillar 154 of the right side panel Sr (left side panel Sl), and the pressing surfaces 158 ₁ , 159 _{1 of the} clamp supports 158, 159 have the pillars 154. The right side panel Sr (left side panel Sl) is positioned in the front-rear direction by contacting the front and rear surfaces of the.

As shown in FIG. 10, a pair of ninth positioning devices L ₉ are provided below the central vertical frame of the positioning frame F ₂ .
This device L ₉ is composed of a clamp jig and clamps the side sill 167 of the right side panel Sr (left side panel Sl) for positioning as shown in FIG. 24.
As shown in FIG. 24, a clamp support 169 is fixed to a bracket 168 fixed to the central vertical frame of the positioning frame F ₂ , and a fixed clamp piece 170 and a restraining piece 171 are integrally formed on the clamp support 169. A movable clamp piece 172 which is formed and corresponds to the fixed clamp piece 170 is pivotally supported 173, and a 16th cylinder Cy ₁₆ which is connected to the movable clamp piece 172 to open and close the movable clamp piece 172 is a central vertical frame of the positioning frame F _2. Is stuck to. The upper surface of the side sill 167 of the right side panel Sr (left side panel Sl) is held by the pressing piece 171, and the flange portion 174 of the lower surface is clamped by the fixed and movable clamp pieces 170, 172. The Sr (left side panel Sl) is positioned vertically and horizontally.

Thus, the first to ninth positioning devices L _{1 to} L ₉ concretely shown in FIGS. 13 to 24 constitute the above-mentioned front positioning device group, and include the floor panel Fl of the temporary assembly body Bo, the left side. , The front halves of the right side panels Sl, Sr and the roof panel Ro are accurately positioned at the welding position with respect to each other, and the front panel Fr is accurately positioned at the welding position at their front edges.

Next, referring to FIGS. 10 and 25 to 33, the temporary assembly body Bo
It described rear half portion positioned group L ₁₀ ~L ₁₅ for positioning the latter half at the welding position of.

As shown in FIG. 10, the left and right positioning frames F ₁ and F ₂ are respectively provided with a 10th positioning device L ₁₀ . This device L ₁₀
Is a clamp jig that positions and positions the roof panel Ro and roof rail Rr relative to each other.
The tenth positioning device L ₁₀ provided on the right positioning frame F ₂ will be described with reference to FIGS. 25 to 29. The stay 176 fixed to the rear portion of the positioning frame F ₂ has a pivot 177 and an opening / closing arm 178 with a vertical axis. The 20th cylinder Cy ₂₀ supported on the rear edge of the positioning frame F ₂ is connected to the opening / closing arm 178 so as to be openable / closable back and forth, and the opening / closing arm 178 is expanded / contracted by this cylinder Cy _20.
Is driven back and forth. Then, as clearly shown in FIG. 27, a stay 176 is provided with a stopper 179 provided between the open / close arms 178.
The closed position (clamp position) is restricted by. A bracket 180 is fixed to the front end of the opening / closing arm 178, and a clamp support 182 that bends in a crank shape with a substantially horizontal pivot 181 (Fig. 25) is temporarily attached to the bracket 180.
It is pivotally supported so that it can swing back and forth. Between the bracket 180 and the clamp support 182, the clamp support 18
A nineteenth cylinder Cy ₁₉ that swings the 2 is connected. A stopper 183 is provided between the bracket 180 and the clamp support 182 to restrict the clamp support 182 to the clamp position. Further, rubber dampers 184, 184 (FIG. 26) are interposed between the opposed side surfaces of the bracket 180 and the clamp support 182, and are designed to give resistance to them when the clamp support 182 rotates. . A pair of inner and outer clamp arms 185 and 186 are pivotally supported 187 and 188, respectively, at the front end of the clamp support 182 so as to be openable and closable, and these clamp arms 185 and 186 are opened and closed in the 17th and 18th cylinders Cy ₁₇ and Cy, respectively. ₁₈ are connected. Stopper pieces 189, 190 are fixed to the clamp support 182, and these stopper pieces 18
The 9,190 abuts the inner and outer clamp arms 186, 187 to restrict them to the clamp positions. A positioning pin 191 is projectingly provided at the tip of the inner clamp arm 185, and a pin hole 192 into which the positioning pin 191 can be fitted is formed in the outer clamp arm 186. As shown in FIG. 25, the positioning pin 191 of the inner clamp arm 185 penetrates through the positioning hole 193 formed in the overlapping portion of the roof rail Rr and the roof panel Ro and is fitted into the pin hole 192 of the outer clamp arm 186, and both clamps are attached. The overlapping portion is clamped by the arms 185 and 186, and thereby the roof panel Ro and the roof rail Rr are positioned at the welding position.

Referring next to the eleventh positioner L ₁₁ provided on the right side of the positioning frame F ₂ with reference to the 25-27 figure, the first
1 Positioning device L ₁₁ has a right side panel Sr (left side panel
Sl) is composed of a clamp jig that clamps the trailing edge pillar 195, and includes a fixed clamp piece 196 fixed to the stay 176 fixed to the positioning frame F ₂ and a stay clamp 196 fixed to the stay 176.
It comprises a movable clamp piece 198 pivotally supported 197 by 176, and this movable clamp piece 198 is connected to the 21st cylinder Cy ₂₁ and is opened and closed thereby. And fixed and movable clamp pieces
196 and 198 clamp the flange portion of the trailing edge pillar 195 of the right side panel Sr (left side panel Sl) as shown in FIG.

Next, the twelfth positioning device provided on the right positioning frame F ₂ will be described with reference to FIGS. 25 to 27. The upper edge of the right side panel Sr (left side panel Sl) and the roof panel Ro will be described.
It is for clamping the overlapping flange portion 201 on the side edge, and is a bracket 20 fixed to the upper edge of the right positioning frame F _2.
2, a clamp arm 204 is pivotally supported by a substantially horizontal pivot 203 so that the clamp arm 204 can be raised and lowered. The 23rd cylinder Cy ₂₃ is connected between the clamp arm 204 and the bracket 202, and the clamp arm is expanded and contracted by the 23rd cylinder Cy _23. The hoisting position of 204 is regulated, and the standing position (clamping position) is regulated by the abutment of the stopper 205 provided between the bracket 202 and the clamp arm 204. Fixed clamp piece 2 on the tip of the clamp arm 204
06 is fixed and the movable clamp piece corresponding to this
207 is pivotally supported 208 so that it can be opened and closed.
207 can clamp the overlapping flange 201 between the upper edge of the right side panel Sr (left side panel Sl) and the side edge of the roof panel Ro, and as shown in Fig. 26, the automatic welding robot Rob spot welds multiple places. Wp is done.

In FIG. 10, the 13th to 15th positioning devices L _{13 to} L ₁₅ are provided on the lower rear sides of the left and right positioning frames F ₁ and F ₂ , respectively.

Next, the configurations of the _{13th to} 15th positioning devices L _{13 to} L ₁₅ provided on the right positioning frame F ₂ will be sequentially described with reference to FIGS. 30 to 33. The 13th positioning device L ₁₃ is composed of a clamp jig, and the rear vertical frame of the right positioning frame F ₂ is
As shown in FIGS. 30 and 31, a bracket 210 protruding rearward is fixed, a clamp arm 211 is pivotally supported 212 on the bracket 210, and the clamp arm 211 is connected to the 25th cylinder Cy _{25 so} that the 31st cylinder 31 As shown by the arrow in the figure, it can swing toward the temporary assembly body Bo. Clamp arm 21
A clamp support 213 is fixedly attached to 1. A fixed clamp piece 214 is fixed to the clamp support 213, a movable clamp piece 215 is pivotally supported 216 so as to be openable and closable, and the movable clamp piece 215 is opened and closed by a 24th cylinder Cy ₂₄ connected thereto. These clamp pieces 214, 215 are
As shown by the chain line in the figure, the overlapping flange portions 217 of the side edge of Fl and the lower edge of the right side panel Sr (left side panel Sl) are clamped to the floor panel.

Then 14th positioner L _14, the thirteenth positioner L ₁₃
Is provided on the rear vertical frame of the positioning frame F ₂ above. This device L ₁₄ also comprises a clamp jig. number 3
As shown in FIGS. 0 to 32, a clamp support 221 is fixed to a bracket 220 fixed to the rear end of a support arm 219 protruding rearward from the rear vertical frame of the positioning frame F ₂ , and a fixed clamp piece 221 is fixed to this. 222 is fixed and the movable clamp piece 223 is pivotally supported 224 so that it can be opened and closed.
3 is opened / closed by the 26th cylinder Cy ₂₆ connected thereto. The overlapping flange portion 225 at the rear end of the right side panel Sr (left side panel Sl) is clamped between the clamp pieces 222 and 223 as shown by the chain line in FIG. 32 to perform positioning.

A fifteenth positioning device L ₁₅ is provided on the upper surface of the support arm 219. As shown in FIGS. 30, 32, and 33, a pair of slide bearings 228 and 2 are mounted on the bracket 227 fixed to the upper surface of the support arm 219.
28 are fixed to the bearings 228, 228, and sliding pins 229, 229 are supported through the bearings 228, 228 in the left-right direction with respect to the positioning frame F _{2 so as} to be able to advance and retreat with respect to the temporary assembly body Bo. Positioning pins 231 are laterally projected on a connecting plate 230 that connects the two. The connecting plate 230 includes a 27th cylinder Cy ₂₇ supported by the bracket 227.
Is connected, and the positioning pin is activated by the expansion and contraction of the cylinder Cy _27.
231 moves forward and backward with respect to the temporary assembly body Bo. The positioning pin 231 is fitted into the pin hole 233 formed in the molding groove 232 of the right side panel Sr (left side panel Sl) as shown by the chain line in FIG. 33, and is fitted to the rear portion of the right side panel Sr (left side panel Sl). Position.

Thus to tenth to fifteenth positioner L ₁₀ ~L that shown in 25-33 Figure
Reference numeral ₁₅ constitutes a rear positioning device group for positioning the rear parts of the respective components of the temporary assembly body Bo at the welding positions.

As shown in FIG. 3, at the positioning and welding station St ₂ , two automatic welding robots Rob are arranged on each of the left and right sides of the machine frame 33. Two of these robots Rob are provided so as to be movable in the X direction, two by two on bases 235 provided on the left and right sides of the machine frame 33. These robots Ro
Since b ... are all conventionally known, one of them is
Briefly referring to Figures 1 and 12, the X on the base 235
A pair of guide rails 236, 236 is laid along the direction, and a robot stand 237 is provided on these guide rails 236, 236 so as to be able to travel. The pinion 239 fixed to the driving shaft of the motor 238 provided on the robot base 237 is the rack 24 fixed to the base 235.
The welding robot Rob is meshed with 0 and driven by the motor 238.
Can travel back and forth in the X direction. Robot stand 237 has
A swing frame 241 is swingably supported by a horizontal pivot shaft 242, and an oscillating cylinder 243 supported by a robot stand 237 is connected to the oscillating frame 241. As shown by the solid and chain lines in FIG. 11, it is swung up and down. A slide base 244 is mounted on the swing frame 241 so as to be slidable in the Y direction, and a robot arm 245 is rotatably supported on the slide base 244 around a pivot 246 so that the robot base 245 can slide on the slide base 244.
The elevating cylinder 247 supported by the elevating cylinder 247 is connected to the robot arm 245, and the robot arm 245 is swung in the Z direction as shown by the solid line and chain line in FIG. A spot welding gun 248 is supported at the tip of the robot arm 245, and the gun 248 has a pair of fixed welding rod 249 ₁ and movable welding rod 249 ₂ .

The spot welding points of the temporary assembly body Bo positioned as described above on the transporting truck Tr are sequentially and automatically spotted by the X, Y and Z direction movements of the left and right four automatic welding robots Rob, Rob .... Welding is Wp.

At the positioning and welding station St ₂ , when the spot welding Wp is completed, the lifter 50 is lowered, the carrier truck Tr is placed on the traveling rails 2 and 2 again, the pinion 31 is meshed with the rack 32, and the drive motor is driven. Transport truck Tr by driving 30
Self-propels on the conveying path 1 to the left in FIG. 2, and reaches the payout station St ₃ as shown by the chain line in the figure.

As shown in FIGS. 2 and 3, at the payout station St ₃ , paired columns 250, 250 are erected on both left and right sides of the transport path 2. Drip lifters 251 and 251 are supported by the columns 250 and 250 so as to be able to move up and down, and these drip lifters 251 and 251 raise the assembly body (white body) B on the carrier truck Tr by the rise, and suspend the body B on the overhead conveyor Co. It is clamped by the transport hanger 4 which is kept waiting. Then, the assembly body B is delivered from the delivery station St ₃ to another station (not shown) by the overhead conveyor Co.

Next, the operation of the embodiment of the present invention will be described.

As shown by the chain line in FIG. 2, the floor hanger Fl and the left and right side panels Sl, Sr are connected to the preset station S by the transfer hanger 4 suspended on the overhead conveyor Co.
It is transported onto t ₁ . This preset station St
_{In 1} , the left and right side panels Sl, Sr and the floor panel Fl from the transfer hanger 4 are side panel drop lifters 13, 1.
3 and floor panel drop lifters 14 and 14 receive them and place them on the carrier truck Tr waiting on the carrier path 1,
The floor panel Fl is positioned and set on the trolley Tr by front-rear positioning P ₁ , P ₁ , P ₂ , P ₂ and the left and right side panels Sl, Sr are temporarily fixed by the left and right temporary clamps 25l, 25r. .

In front of the preset station St ₁ , from the lateral direction, the front panel Fr is installed by the floor panel supply device Sf.
Is transported and stands by so as to stand in front of the transport truck Tr.

When the carrier truck Tr is positioned and self-propelled toward the welding station St ₂ , the front panel F is moved to the direction shown in Fig. 6 and 7.
r reaches the front edges of the left and right side panels Sl, Sr and the floor panel Fl, so that the front panel receiving device Re provided at the front part of the carrier truck Tr causes the front panel to move.
The Fr is received, and the front panel Fr is temporarily fixed to the front edges of the left and right side panels Sl, Sr and the floor panel Fl by the upper and lower temporary fixing clamp jigs 47 and 48 provided in the device Re.

Positioning of the carrier truck Tr with the front panel Fr, left and right side panels Sl, Sl and floor panel Fl temporarily fixed,
It is transported to the welding station St ₂ and stopped there as shown in Figs. This positioning, welding station St
_{At 2} , the lifters 50 (FIG. 11) on the transport path 1 are operated to lift the transport truck Tr from the state shown in FIG. 5 to the state shown in FIG. As a result, the pinion 31 of the drive motor 30 is removed from the rack 32, the carrier truck Tr is positioned, and the welding station St
Fixed to ₂ .

Positioning and welding station St _{2 from} the side 3rd, 11th
As shown in the figure, the roof panel Ro and the roof rail Rr are conveyed from the roof panel and the roof rail supply device S _R onto the conveyor truck Tr. Then, as shown in FIG. 9, the roof rail Rr is set on the roof rail mounting portions 83, 83 at the upper rear edges of the left and right side panels Sl, Sr, and then the roof panel Ro is set from the solid line in FIG. 8 to the chain line. It is lowered and set on the upper edges of the front panel Fr, left and right side panels Sl, Sr.

Due to the above, the floor panel on the carrier truck Tr
Fl, the left and right side panels Sl, Sr, the front panel Fr, the roof rail Rr, and the roof panel Ro are temporarily fixed, and the temporary assembly body Bo is assembled.

Next, as shown in FIG. 11, the left and right positioning frames F ₁ and F _2, which are provided on the left and right of the transport path 1 so as to be able to rise and fall, are erected. The front positioning device groups L _{1 to} L ₉ and the rear positioning device groups L _{10 to} L ₁₅ symmetrically provided on the left and right positioning frames F ₁ and F ₂ are the floor panels as described above.
Accurately position Fl, left and right side panels Sl, Sr, front panel Fr, roof rail Rr, and roof panel Ro at welding positions relative to each other.

When the above-mentioned positioning is completed, the automatic welding robots Rob arranged outside the left and right positioning frames F ₁ and F ₂ are controlled to move in the X, Y and Z directions, and the floor panel F is controlled.
Spot welding Wp between the left, right and right side panels Sl, Sr, front panel Fr, roof rail Rr and roof panel Ro. In this case the automatic welding robot Rob
Welding gun 248 may penetrate the space between the left and right positioning frames F ₁ , F ₂ .

When the spot welding Wp ... is completed, the carrier truck
White body B is assembled on the Tr.

Next, after canceling the positioning operation of all the welding equipment groups L _{1 to} L ₁₅ , the left and right positioning frames F ₁ and F ₂ are rotated outward, and then the lifters 50 are lowered to move the carrier truck Tr to the traveling frame. If it is placed on 2, 2, the pinion 31 of the drive motor 30 comes to mesh with the rack 32, and if the drive motor 30 is driven, the carrier truck Tr is positioned and the welding station St _{2 is} moved to the payout station St ₃ . Can be run.

At the payout station St ₃ , the white body B is raised by the operation of the drop lifter 251 and the white body B is sandwiched by the transfer hanger 4 under the overhead conveyor Co and transferred from the payout station St ₃ to another station.

In the above-described embodiment, it is possible to use another carrier such as a trans-saver instead of the carrier truck Tr.

C. Effect of the Invention As described above, according to the present invention, the front panel loading device is configured by being divided into the front panel supply device and the front panel receiving device, and each of them is formed compact with a small number of parts. Therefore, the positioning of them and the layout around the welding station are facilitated, and furthermore, the front panel can be put into the station efficiently and smoothly. Also, after loading the front panel, the front panel carrier of the front panel supply device can be positioned and retracted from the welding station, and the receiving arm of the front panel receiving device can be laid down so that those devices can operate other devices. It doesn't get in the way.

[Brief description of drawings]

The drawings show one embodiment of the device of the present invention. FIG. 1 is an exploded perspective view of a white body, FIG. 2 is an overall side view of the device of the present invention, FIG. 3 is an overall plan view thereof, and FIG. FIG. 5 is an enlarged side view of the preset station on the floor panel and the side panel, FIG. 5 is a rear view of the preset station shown in FIG. 4 taken along the line V, FIG. 6 is a side view of the front panel supply device, and FIG. Fig. 6 is a front view of the front panel supply device in a view taken along the line VII, Fig. 8 is a roof panel,
A side view of the roof rail feeder, FIG. 9 is a rear exploded perspective view of the left and right side panels, a roof rail, and a roof panel, and FIG. 10 is a side view of a positioning welding station.
FIG. 11 is a front view of the welding station shown in FIG. 10 along the line XI-XI, FIG. 12 is a rear view of the welding robot taken along the line XII-XII in FIG. 11, and FIG. 13 is a positioning frame on the right side. Side view of the 1st-7th positioning device provided in the front part of
FIG. 14 is a view taken along the line XIV-XIV in FIG. 13, and FIG. 15 is
13 is a partial sectional view taken along line XV-XV, FIG. 16 is FIG. 13 XVI
-Partial sectional view taken along line XVI, FIG. 17 shows FIG. 13 XVII-XVII
18 is a partial sectional view taken along the line XVIII-XVIII in FIG. 13, FIG. 19 is a partial sectional view taken along the line XIX-XIX in FIG. 13, and FIG. FIG. 21 is a partial sectional view taken along the line XX-XX, FIG. 21 is a partial sectional view taken along the line XXI-XXI of FIG.
2 is a partial sectional view taken along the line XXII-XXII in FIG. 13, FIG. 23 is a partially enlarged sectional view taken along the line XXIII-XXIII in FIG. 10, and a partial enlarged sectional view of the eighth positioning device is shown in FIG. -XXIV is a partial enlarged view of the ninth positioning device, and FIG. 25 is a tenth to twelfth positioning device provided on the right positioning frame,
A side view taken along the line XXV-XXV, FIG. 26 is a rear view taken along the line XXVI in FIG. 25, and FIG. 27 is a plan view taken along the line XXVII in FIG. 25.
FIG. 28 is a sectional view taken along the line XXVIII-XXVIII in FIG. 27, and FIG.
FIG. 25 is a cross-sectional view taken along the line XXIX-XXIX in FIG. 25, and FIG.
A side view of the positioning device, FIG. 31 is a rear view taken along the line XXXI of FIG. 30, FIG. 32 is a partial sectional view taken along the line XXXII-XXXII of FIG. 30, and FIG. 33 is taken along the line XXXIII-XXXIII of FIG. It is a fragmentary sectional view which follows a line. Fl ... Floor panel, Fr ... Front panel, Re ... Front panel receiving device, Ro ... Roof panel, Sl, Sr ...
… Left and right side panels, Sf …… Front panel feeder, St ₂ …… Positioning, welding station, Tr …… Transport truck, 1 …… Transport path, 34 …… Transverse path, 37 …… Front panel carrier, 45 …… Receiving arm, 47,48 …… Front panel clamp jig

Claims (1)

[Claims] 1. A floor panel (F) is installed at a positioning and welding station (St ₂ ) arranged in the middle of a transfer path (1).
l), left and right side panels (Sl, Sr), front panel (Fr), roof panel (Ro), etc.
Therefore, in a welding device for an automobile body that positions them and welds them together, a front panel (Fr) is supplied in front of a carrier such as a carrier truck (Tr) moving on the carrier path (1). Front panel feeder (Sf)
And a front panel receiving device (Re) for receiving a front panel (Fr) from the front panel supply device (Sf) and setting it at a welding position, the front panel supply device (Sf) being the transport path. A lateral conveyance path (34) provided orthogonally to (1), and this lateral conveyance path (34)
The front panel (F
r) and a front panel carrier (37) capable of putting the r) in front of the carrier, and the front panel receiver (Re) includes a receiver arm (45) provided at the front end of the carrier so as to be capable of undulating. A front panel loading device in a welding device for an automobile body, which comprises a front panel clamp jig (47, 48) provided on the receiving arm (45).