JPH05124550A - Setting jig for side panel - Google Patents

Abstract

PURPOSE:To constitute a setting jig to hold a side panel and weld it to other automobile body constituting members by providing a plurality of clamping members to hold a door opening edge part to the jig body positioned at the door opening of the side panel and eliminate the interference with a welding robot. CONSTITUTION:A setting jig 9 to hold a side panel W5 to the door opening part W5a which is mounted in a removable manner on a movable frame arranged on the right and the left side of an automobile body assembling station is constituted by mounting a plurality of clamping members 9c to hold the opening edge part of the door opening W5a on the jig body 9b which is depressed on the cabin side through the door opening W5a. This arrangement allows an extensive space to be secured to insert a gun arm of a welding gun of a welding robot similarly fitted to the movable frame between the jig body 9b and the door opening edge part, and also allows the outer part and the inner part of the opening edge part, and the side panel W5 and other constituting members of a roof or the like to be welded in a smooth manner respectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a side panel setting jig used in the process of assembling an automobile body by welding and joining the side panel to another body component member such as a floor.

[0002]

2. Description of the Related Art Conventionally, as an assembling apparatus for an automobile body, according to Japanese Patent Laid-Open Publication No. 56-168979, a plurality of side panels are held at the outer edges of the vehicle body assembling station into which a floor, a roof and the like are inserted. A welding jig equipped with a clamp member and a plurality of welding guns for welding the side panel to the floor or roof is arranged, and the side panel is held by the welding jig and welded to the floor or roof to join the automobile body. It is known that they can be assembled. Further, as disclosed in Japanese Unexamined Patent Publication No. 62-110581, a positioning robot and a welding robot are mounted on each fixed frame erected on both sides of the assembly station, and a side panel, floor, etc. are mounted on the assembly station. It is also known to assemble an automobile body by inserting the other vehicle body constituent members in a state of hitting a required positional relationship and welding-bonding these members by a welding robot in a state of being positioned by a positioning robot.

[0003]

In the former prior art described above, it is necessary to replace the welding jig when the model of the automobile is changed, and since the welding jig is equipped with a large number of welding guns, it is expensive. Since it is necessary to prepare a large number of expensive welding jigs for each model, there is a problem that equipment costs increase. On the other hand, in the latter conventional technology, since no welding jig is used, it is possible to easily deal with model changes, but since the robot positions the vehicle body constituent members such as the side panel and floor, it is possible to change the repeatability of the robot. There is a problem that an error is likely to occur in the assembly accuracy of the vehicle body. In this case, as a folding plan, it is conceivable that the side panel is positioned and held by a set jig specialized for each model, and welding is performed by a welding robot, which guarantees the vehicle body accuracy. At the same time, since it is not necessary for the set jig to have a welding function, there is an advantage that the cost of the set jig can be reduced and an increase in equipment cost can be suppressed. But in this case,
Interference between the welding robot and the set jig poses a problem. In view of the above points, an object of the present invention is to provide a set jig in which a side panel can secure a working space of a welding robot and can be positioned and held.

[0004]

[Means for Solving the Problems] In order to achieve the above object,
The set jig of the present invention is a set jig for a side panel used in a process of assembling an automobile body by welding and joining the side panel to another body component member such as a floor, and a door opening formed in the side panel. A plurality of clamp members capable of positioning and gripping the opening edge of the door opening are attached to the jig main body that can be inserted into the jig main body while the jig main body is sunk into the vehicle compartment side through the door opening.

[0005]

[Operation] By making the jig body small so that it can be inserted into the door opening, a wide operation space for the welding robot can be secured around the door body, and the jig body is also immersed in the passenger compartment. The clamp arm holds the opening edge of the door opening and positions and holds the side panel. Therefore, the gun arm of the welding gun is provided between the opening edge and the jig body on the other side of the opening edge. It is possible to secure a necessary and sufficient space for wrapping around the welding portion with the vehicle body component, and the welding robot can weld the side panel to another vehicle body component without causing interference with the set jig.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a vehicle body assembly line in which a transfer station 1, an assembly station 2 and a payout station 3 are arranged in this order toward the front, and a trolley-type first loading device 4 and a ceiling suspension type are installed. The second feeding device 5 between the assembling station 2 and the transferring station 1 respectively.
The floor W ₁ provided reciprocally along a and 5 a and delivered from an upstream floor assembly line (not shown) is placed on the first loading device 4 and loaded into the assembly station 2, and the transfer station 1 on one side of, placing the transfer device 6 to enter the transfer station 1 a jig 6a for placing a 3 member of the roof W ₂ and dashboard upper W ₃ and rear tray W ₄ from the side, Osamu The three members on the tool 6a are received by the holding means 5b, 5c, 5d for the roof, the dashboard upper, and the rear tray, which are hung up and down on the second loading device 5, and the second loading device 5 is assembled. These three members are put into the assembly station 2 by the forward movement to the station 2. Then, at the assembly station 2, the floor W
_The left and right side panels W ₅ and W ₅ are welded to ₁ and the roof W ₂ , the dashboard upper W ₃ and the rear tray W ₄ are inserted and set from above between the side panels W ₅ and W _5. The three members and the side panel W ₅ are welded and joined together, and the automobile body thus assembled is delivered to the delivery station 3 by the transfer device 7 and conveyed to the hitting line on the downstream side.

On both the left and right sides of the assembly station 2, along the pair of front and rear guide members 8a, 8a, respectively, there is a standby position outside in the lateral direction shown in the left half of FIG. There is provided a movable frame 8 which is moved to a laterally inward welding position shown in the right half portion.
The longitudinal direction length of the upper and lower stages of the beams 8b, is formed in the side view rectangle having 8b, longitudinal pair of setting jig for positioning and holding the side panel W ₅ at its front and rear door opening W ₅ a 9, 9 Is detachably attached to each holder 8c fixed to the inner surface of the upper beam 8b through a support arm 9a extending laterally outward from each of the setting jigs 9, and further to the upper beam 8b and the lower beam. A welding robot 10 equipped with a welding gun 10a is mounted on each of the beams 8b. Then, by moving the movable frame 8 to the welding position, the side panel W ₅ is joined to the floor W ₁ while being positioned and held by the setting jigs 9, 9.
In this state, the side panels W ₅ are welded to the floor W ₁ by a plurality of welding robots 10 mounted on the lower beam 8b,
Furthermore by inserting set roof W ₂ from above between the upper edges of the left and right side panels W _5, W _5, the two welding robots 10 which is installed in the upper beam 8b and the side panel W ₅ and the roof W ₂ Were welded together. In addition, a pair of left and right beam frames 1 which are long in the front-rear direction are provided on the ceiling of the assembly station 2.
1 and 11 are provided, and the welding gun 1 is attached to each beam frame 11.
2a with multiple welding robots 12 provided with, in front and rear end portions and the floor W ₁ of the rear panel portion W ₁ a dashboard upper W ₃ and rear tray W ₄ and the roof W ₂ against the side panel W ₅ These welding robot 12 We tried to weld.

By the way, the side panel W ₅ is composed of a plurality of parts including an outer and various inners, and a pair of left and right presetting devices 13 having a preset jig 13a for holding these parts in a required positional relationship. , 13 are provided, and when the movable frame 8 is moved to the standby position, the preset jig 13a is put into the space formed between the movable frame 8 and the assembly station 2 inside, and the side held by the jig 13a. The component parts of the panel W ₅ are set in the set jig 9,
Then, the side panel W ₅ is assembled by welding the constituent parts by welding by the welding robot 10 mounted on the movable frame 8. To explain this in detail, each presetting device 13 can be moved back and forth laterally on a movable table 13b which is reciprocated between a loading position on the side of the assembly station 2 and a preset position on the side of the dispensing station 3. A slide frame 13c is provided, and on the slide frame 13c,
A preset jig 13a to which various holders for positioning and holding the components of the side panel W _{5 in} a desired positional relationship are attached.
Is detachably mounted. With the movable base 13b returned to the preset position, the components of the side panel W ₅ are set on the preset jig 13a, and the assembly of the vehicle body at the assembly station 2 is completed. When the movable frame 8 is moved to the standby position, the movable table 13b is moved forward to the closing position so that the preset jig 13a faces the inside of the set jigs 9 and 9, and then the slide frame 13c is laterally moved. The side panel W that moves outward and is held by the preset jig 13a
The component ₅ is held by the set jigs 9 and 9, and in this state, a predetermined welding robot 10 temporarily tack-welds the component at the minimum necessary welding points, and then the holder for the preset jig 13a is attached. after leaving the preset jig 13a from the side panel W ₅ by moving the slide frame 13c laterally inwardly in unclamped state, the side panel W ₅ and additional welding the components together by welding robot 10 During the assembling, the movable table 13b is returned to the preset position in the meantime to prepare for the next set operation. It should be noted that since it takes time to completely weld the upper welding portion of the side panel W ₅ by the two welding robots 10 mounted on the upper beam 8 b of the movable frame 8, in this embodiment, the standby position of the movable frame 8 is used. Install the fixed frame 14 on the upper part of
A plurality of welding robots 15 are mounted on the fixed frame 14 to assist in assembling the side panel W ₅ .

As shown in FIG. 3, each set jig 9 has
Jig main body 9b that is immersed into the cabin side through the door opening W ₅ a
To, is constituted by attaching a plurality of clamping member 9c as shown in FIG. 4 for gripping the opening edge of the door opening W ₅ a, jig main body 9b and the door by immersion of the jig main body 9b in the vehicle compartment side A wide space for inserting the gun arm of the welding gun is secured between the opening edge portion, the outer and inner welding points at the opening edge portion, and the side panel W ₅ located on the back side of the opening edge portion. It was welded portion between the other vehicle components, such as roof W ₂ to be welded without causing interference gun arm against the jig body 9b. Each, clamp member 9c
Is the leg 9c ₃ extending laterally outwardly to the outer surface of the substrate 9c ₂ mounted via a bracket 9c ₁ the jig body 9b provided upright, the door opening edge at the tip portion of the leg piece 9c ₃ while fixed a workpiece receiving 9c ₄ receives the outer surface of, pivotally mounted clamp arm 9c ₅ sandwiching the door opening edge between the workpiece receiving 9c ₄ in the leg piece 9c _3, the clamp arm 9c ₅ Is configured to be opened / closed via a link 9c ₇ by an opening / closing cylinder 9c ₆ attached to the inner surface of the substrate 9c ₂ , and the side edge of the side panel W is clamped with the workpiece receiver 9c ₄ as a positioning reference. ₅ was positioned so that it could be held.
In addition, the jig body 9b is replaced with two loop-shaped pipe members 9
b _1, 9b ₁ constructed by bundling, the both pipe members 9b _1, 9b
_{1. In addition} to forming the connection ports 9b ₂ for external piping respectively in ₁ ,
It is positioned on the mounting portion of each clamp member 9c to form a connection port 9b ₃ for each clamping member 9c, each clamp member 9c
Forming a both said connection port 9b _3, 9b of a pair of matching the _third fluid passage 9c _8, 9c ₈ of the bracket 9c both pipe member 9b ₁ to _1, 9b _1, and the both fluid passages 9c _8, 9c ₈ Each clamp member 9c
It was communicated via a passage formed in the substrate 9c ₂ and the cylinder barrel on both cylinder chambers of the closing cylinder 9c within _6. According to this, the working fluid can be supplied to the opening / closing cylinder 9c ₆ of each clamp member 9c by using the jig body 9b as a piping member, and the piping member for the opening / closing cylinder 9c ₆ is arranged on the jig body 9b. There is no need, and the set jig 9 is neatly configured, which facilitates the welding operation by the welding robot 10.

When changing the model of an automobile, it is necessary to replace the set jigs 9 and 9 and the preset jig 13a. As shown in FIG. 2, a plurality of jig replacement stands 16 are mounted above the line. A stock frame 17 to be placed is provided, and an empty mount 16 is assembled by a crane device (not shown) to the assembly station 2.
And set jigs 9, 9 and preset jig 13a.
Docking pin 1 with and protruding from the preset jig 13a
3a ₁ is transferred to the gantry 16 in a docked state, the gantry 16 is hoisted and placed at a fixed position on the stock frame 17, and then set jigs 9 and 9 and a preset jig to be used next. The gantry 16 for holding 13a and 13a is lowered to the assembly station 2 for jig exchange. It should be noted that the guide member 5a of the second charging device 5 can be pulled out from the assembly station 2 so as not to interfere with the gantry 16.

[0011]

As is apparent from the above description, according to the present invention, the side panel can be moved to another position without interference with the setting jig by the welding robot while the side panel is positioned and held on the setting jig. Since it becomes possible to weld it to the constituent members of the vehicle body, there is an effect that the assembling accuracy of the vehicle body is guaranteed and the equipment cost can be reduced.

[Brief description of drawings]

FIG. 1 is a side view of an example of a vehicle body assembly apparatus including a set jig of the present invention.

FIG. 2 is a front view of the assembly station as seen from the line II-II in FIG.

FIG. 3 is a side view of the setting jig viewed from the line III-III in FIG.

4 is a sectional view taken along the line IV-IV in FIG.

[Explanation of symbols]

W ₅ Side panel W ₅ a Door opening 9 Set jig 9 b Jig body 9 c Clamp member

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hisashi Noro 1-10-1 Shin-Sayama, Sayama-shi, Saitama Prefecture Honda Engineering Co., Ltd.

Claims (1)

[Claims] 1. A set jig for a side panel used in a process of assembling an automobile body by welding and joining the side panel to another body component member such as a floor, which is inserted into a door opening formed in the side panel. A side characterized in that a plurality of clamp members capable of positioning and gripping an opening edge portion of a door opening are attached to a possible jig body while the jig body is retracted through the door opening toward the passenger compartment. Panel setting jig.