JPS61232969A - Assembly line for automobile body - Google Patents

Abstract

PURPOSE:To shorten the cycle time required, by restoring a set truck to its set position after delivering a floor to a welding jig. CONSTITUTION:A floor W1 is set to a set truck 1 at a set position A, while a roof W2 is held by a roof set jig being hangingly held by a movable frame 11 and roof set operation takes place. Next, the set truck 1 is moved to a welding position B, uplifting this with a lifter 8, and a side panel W3 is set to the floor W1 from the side. And, the set truck 1 is made to go down, delivering the floor W1 to a welding jig 2, and the set truck 1 is restored to the set position A. During delivery operation for this floor W1, the movable frame 11 is moved to an upper part of the welding position B, and a roof W2 is set to a space between upper edge parts of the side panel W3. Then, the side panel W3 is coupled with the floor W1 and the roof W2 by means of weld ing.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an automobile body assembly apparatus for assembling an automobile body by welding side panels on both sides of an automobile body to a floor and a roof of the automobile body.

(Conventional Technique #) As a conventional device of this type, according to Japanese Patent Publication No. 59-55070 filed by the present applicant, a set cart is provided between a set position and a welding position in front of the set position and is movable back and forth. A welding jig is provided on both sides of the welding position for welding the side panels on both sides of the automobile body to the floor and roof of the vehicle body, and the set truck has a floor and a roof setting jig provided on the truck. In addition, the welding jig can be freely set with the roof in the inward position, and the welding jig can be reversed between, for example, an inward-facing position and an outward-facing position. The floor and roof are transported to the welding position by a combination vehicle, and assembled, and in this state, the floor and roof are transferred to the welding jig, and the side panels are attached to the floor and roof using various welding guns provided in the welding jig. It is known that the parts are welded together, and in the meantime, the set truck is returned to the setting position, and a new 7-plane and roof are set on the set truck, in preparation for the next car body assembly operation.

(Problem to be Solved by the Invention) In the above system, the side panels are assembled from the sides of the floor and roof, but depending on the car model, the roof may be supported using a roof setting jig (more vertically movable). ,) After assembling the side panel to the fourth A, there are cases where it is necessary to assemble the roof onto the side panel from above.

However, in this case, compared to when assembling the floor, roof, and side panels from the sides at the same time, the waiting time at the welding position of the set trolley is longer, and the cycle time of the assembly work is about the same as when assembling them at the same time. To maintain
It was necessary to shorten the time required to set the floor and roof onto the set cart at the set position, which was difficult in practice.

The present invention adopts a method of assembling the roof to the side panels from above, and the assembly process can be completed in the same cycle time as when assembling the floor and roof at the same time without shortening the individual set-up time of the floor and roof. The purpose is to provide a device that can perform and obtain the following.

(Means for Solving Problem 1) In order to achieve the above-mentioned object, the present invention provides a set cart movable in a reciprocating manner between a set position and a welding position in front of the set position, and also provides a set cart on both sides of the welding position. Welding M for welding side panels on both sides of an automobile body to the floor and roof of the automobile body.
! An automobile body assembly device equipped with a jig, in which the set trolley can freely transport seven armor parts to the welding position, and a side panel to be set in advance on the welding jig is assembled to the floor. A movable frame capable of reciprocating is provided between a position above the setting position and a position above the welding position, and the roof setting jig is attached to the movable frame. The roof is transported to the welding position using the roof setting jig, and the roof is assembled from above onto the side panel, which is held in a predetermined assembled state with respect to the floor by the welding jig. The feature is that it can be attached freely.

(Example) The original Il! 11, the floor W, the roof W, and the left and right side panels W3 as shown in FIG. 1 are welded together with the dash upper W4 and rear tray W1 combined to assemble an automobile body. In the drawing (1) is a pair of left and right rails (2) laid between the set position A and the welding position B in front of it (2). The set carriage is supported and reciprocated between the two positions A and E, and (3) indicates a welding jig provided on both sides of the welding position B. A pair of IIrI rear struts (6J) on the slide stand (5) provided on the side of the welding position B in the tool base (4) are placed between the inward and outward postures shown in No. 4g:i. In the drawing, (2 &) indicates a transport bar that engages with the set carriage (11) and reciprocates it.The set carriage (1) has a floor W on its upper surface. It has a positioning member (Ia) i that positions and supports the lifting rail (7a) behind it when the person in the set position
) (7&) and a conveyor bar (7b) supported by the set trolley (1).
) on the positioning member (1a), and then move the set cart (1) to the welding position B, set it at the welding position BVc, position it with the lid (8), and raise it. and in this state, attach the welding jig (3).
) to the inward facing position, and then attach the side panel Ws that has been set in advance in the outward facing position to the set trolley (
Assemble the floors W and K on the upper floor, and transfer the floor Wtk to the welding ft3 tool (3) in this assembled state, and then lower the set trolley (1) to connect the positioning member (1&) and 70.
The setting cart (1) can be returned to the setting position by releasing the engagement with the AW.

Here, the welding jig (3) includes a first welding gun (31) welded to the front panel W, the side panel Wsl: the roof W! A second welding gun (3b) welds and joins the side panel Wa to the side panel W, and a third welding gun (not shown) welds the inner panel and the outer panel, which are the components of the side panel W, to form an integrated side panel W. ), and the outside of the welding jig (3) is provided with JP-A-58-2
A presetting device (9) as known from Publication No. 15294
), and with the welding jig (3) fully facing outward, set the inner panel and outer panel previously set in the device (9) into the welding jig (3) via the device (9). , these panels are processed into an integrated side panel W by the fifth welding gun, and this is assembled to the lid A W1 as described above by reversing the welding jig (3) to the inward position, and in this state. Then, the first welding gun (3&) was used to grip the 7-field ax.

In the drawing, αQ indicates a dispensing device that transports the assembled automobile body to the spot line in front, and this device α1 is connected to the lifting rail (10&) (10&) extending from the welding position B to the front of the welding position B. It consists of a seta m feed bar (1ob).

Although the above is not particularly different from the conventional device described above, according to the present invention, a movable frame aυ that can freely reciprocate is provided between a position above the person at the set position and a position above the welding position B, and the movable frame α
A roof setting jig riz is suspended from υ so that it can be raised and lowered, and the roof W, f: the welding position B is set using the roof setting jig α2.
The welding jig (3) K can be freely assembled from above onto the side panel Ws, which is held in a predetermined assembled state with respect to the floor W11c.

To explain this in more detail, in the illustrated example, the ceiling frame (1!I
m), there are people in both positions, and rails α◆α4 on both sides extending between 3
The movable frame a1) is mounted on both sides of the rail α4114 (11a), and the movable frame αD is supported removably at K:, and the movable frame αD is mounted on both sides of the rear end of the movable frame αυ. A binion (11(1)) is provided which is driven by the upper motor (111t) via a drive wheel (11o), and the binion (11(1) is connected to the rail @ 4Vc @ fixed rack (
14a) so that the movable frame α13 can freely reciprocate between a position above the set position person and a position above the welding position B. A support frame α fixed to the lower surface of the movable frame aυ
SK! The jig base housing η is suspended vertically via a lowering mechanism αe, and the jig pace αη has two sets of front and rear clamp members (12a) for gripping the front and rear edges of A/-7W. A Ru7 set jig da was to be installed.

The details of the elevating mechanism αe are as shown in FIG.
6&) and an articulated link (16b) at the rear end, the support frame (I5) is suspended such that it can be raised and lowered and tilted freely.
The front end cam play (16d) has a cam groove (16o) that engages with the lower end pivot of the front end link (16m).
and *A2 rate (1
6f) and both cam play) (144)
(16f) are connected via a connecting rod (16g), and a common cylinder (16h) is connected to the lever portion at the upper end of the front end cam play (144).
(1411) The cam plates (144) and (16f) are caused to swing in synchronization with each other, and thus both the cam plates (144) and (16f)
The 6th rl! As the links (16a) (16'b) swing counterclockwise at J, the ia! Cam groove (16a) (1
6), the jig pace αη
Therefore, the loop 7 setting jig α2 to be attached to this is lowered, and at this time, each of the links is moved so that the front end link (16a) is swung downward from the middle before the rear end link (16b). The shape of the cam grooves (16G) (16・) is set, and the roof setting jig a3 is once tilted to a forward downward position, and then lowered to a predetermined approximately horizontal downward position, and the roof set in this position is W, is the welding jig on both sides mentioned above (
3) Side panels on both sides held in (3)"t, w
It is designed to be assembled sequentially between the upper parts of the T from the front end side to the rear end side.

In the illustrated example, setting jigs for the dash upper W4 (setting jigs α9 for the rear tray W and I) are provided before and after the support frame α, and both setting jigs α and σ9 are used to set the roof. These dash upper W4 and rear toilet W were installed at the same time as W.

The assembling work is done so that the two seven-piece jigs 0 can be assembled with the cylinders (18
a) Parallel linkage mechanism (181+) operated by (19m)
) (19b), the cylinder (18a
) (194)', and at welding position B, the elevating frame (18c) (190)'
t” and lower the cylinder (18(1)(19
By the operation of (L), each setting jig α ladder (19) was further lowered, and the dash upper W4 and rear tray Ws set thereon were assembled to the predetermined positions between the side panels W, , W. In the drawing, (18.) and (19.) indicate each setting jig (II).

Moreover, a jig stock part (a) is provided on the ceiling frame (13a) of the above-mentioned surrounding frame αj, and a set trolley (1), a welding jig (3), and a roof set are installed in the stock part (1). Jig α2
and gold - Stock stand Q that can be held together and exchanged freely
Several vI units of υ are arranged, and any one of them can be freely lowered to the welding position B by the transfer lane @ provided at the top of the stock part ■, so that the jig can be replaced when changing the model. did.

(Function) To explain the function of the present invention based on the above-mentioned embodiments, first, at the set position A, the floor Ws is set via the set cart (1) and the K floor loading device (7), and the floor Ws is set and the VCs is set.
The roof loading device on the side of the set position 111A (not shown) loads the roof Wm to the position above the set position person, and the front and rear clamp members (12 m) of the roof setting jig α2 suspended by the movable frame aD The roof W is gripped to perform the roof setting work on the jig (13), and the dash upper W4 handler (Ray W) and each set jig A8 are suspended at the front and rear of the movable frame αυ. (to).

Next, move the set trolley (1) to welding position B, position it using the t'J lids (8), lift it up, and in this state, attach the side panels set in advance to the welding holes A (3) on both sides (3). Assemble W@ and W@ from the side to the floor W1.1.The first welding gun (1) installed on each welding jig (3)
3a) Lower the set trolley (1) while holding the 7-reare Wt k from K, and attach the floor W1 to the welding jig (
2), and the set cart (1) is returned to the set position person.

Also, during the delivery work of this floor W1, the movable frame (111) is moved to the position above the welding position B, and the welding jig (3) on both sides is moved.
1 (31, the side springs /l/W, , W on both sides are held in a predetermined assembled state with respect to the flow end W,.

Assemble the roof W from above between the upper edges by lowering the roof setting jig a2, and grip the roof W with the second welding gun (3b) provided on each welding jig (3). The grip of the roof W by the clamp member (12a) of the roof set jig xa'a is released, and the roof set jig α'3 is raised, and during this roof assembly work, the dash upper W, rear tray W, At the same time, the movable frame a11 is returned to the upper position of the set position A.

Next, at the welding position B, the first
Each side panel Ws is welded to the 70A W1 and the roof W using the second welding gun (3a) C5b), and at the same time, the floor W is attached at the set position A as described above.
1 and the roof W. In this case, the set trolley (1) can be returned to the set position A without waiting for the roof W to be assembled to the side panel W.
Therefore, even if it takes some time to set the large part Flow Wt onto the set trolley (1), the setting work of 70A W1 can be completed during the welding work at welding position tB, and the installation work can be completed without any loss time on the floor after welding is completed. It can be transported to W, l@m position B and the next vehicle body assembly work can be performed.

Although the return of the roof setting jig σ2 to the setting position A is delayed, the setting work time for the roof W is shorter than that for the floor W, and even if the setting work is not completed during the welding work. , the roof set is cured by the time the assembly of the flow finish W1 and side panel Ws is completed using the welding jig (2).
Move the roof W to the welding position B, and after completing this assembly,
There is no problem as long as it is assembled and equipped.

(Effects of the Invention) As described above, according to the present invention, only the floor is set on the setting cart, and the roof is suspended on a movable frame that can reciprocate between the setting position and the welding position above the roof setting jig. The roof is transported from the setting position to the welding position by the welding jig, and the roof is set from above onto the side panel, which is held in the predetermined assembled state against the 7-field by the welding jig. After delivery, the set trolley can be returned to the set position immediately without waiting for assembly to the roof side panel, reducing the waiting time of the set trolley at the welding position and reducing the floor setting work at the set position. It saves time and is advantageous in shortening cycle time. Also, unlike the conventional method in which a roof setting jig is installed on a seven-piece cart, the setting cart is more compact, and the stock space of the setting cart is small. This has advantages such as being advantageous in making efficient use of factory space.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of an automobile body, Fig. 2 is a cut side view of an example of the device of the present invention, Fig. 3 is a plan view taken along the line 1-1 of Fig. FIG. 185 is a front view taken along the line 1--2, FIG. 185 is a side view taken along the line V-VS in FIG. 4, and FIG. 6 is an enlarged side view of the roof 7 set repair portion in the roof conveyance state. M...Set position B...Welding position W1...
Award W,...Roof W,...Side panel (1)...Set trolley (3)...Welding jig a
υ...Movable frame α2...Ru 7 setting jig Patent applicant 2 persons other than Honda Motor Co., Ltd. Procedural amendment (7j Gen Showa 5Q, 'i25

Claims (1)

[Claims] A welding jig is provided that allows a set trolley to be reciprocally movable between a set position and a welding position in front of the set position, and welds side panels on both sides of an automobile body to the floor and roof of the car body on both sides of the welding position. An assembly device for an automobile body, which is capable of freely transporting a floor to the welding position by the setting cart, and also welds the floor with the side panel set in advance on the welding jig assembled to the floor. In a device that can be freely delivered to a jig, a movable frame that can freely reciprocate is provided between a position above the setting position and a position above the welding position, and the roof setting jig is suspended on the movable frame so that it can be raised and lowered. The roof is conveyed to the welding position by the roof setting jig, and the roof can be assembled from above onto the side panel which is held in a predetermined assembled state with respect to the floor by the welding jig. Assembly equipment for automobile bodies.