JPS62155178A - Assembly device for body - Google Patents

Abstract

PURPOSE:To enable securement of the right and left precision of a fixture by clamping all of body components such as a floor main and a body side from their insides through the fixture. CONSTITUTION:A loader 26 for transferring an air box and a rear waist and installing them on a floor main 1 transferred into by a transfer bar is movably supported on a rail. The loader 26 has wheels rolling on the rail, and a fixture 28 being vertically movable by a cylinder 27 is attached to the loader 26. A plurality of clampers 29 for clamping the right and left body sides 2, 3, the air box, the rear waist, and a rear panel against the floor main 1 from the inside of a body are attached. The body fixed by the clampers 29 is lifted by the cylinder 27 and then moved to the transfer bar by the loader 26.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a vehicle body assembly apparatus that aligns vehicle body parts such as body sides to a floor main on a body main line.

(Prior art) As shown in Fig. 4, the automobile body B has a floor main 1,
It consists of vehicle body parts such as left and right body sides 2.3, an air box 4 consisting of a dash and a cowl, a rear waist parcel 5, and a rear panel 6. These body parts are assembled in the floor main line, in which the engine compartment 1a, the front 1-floor 1b, and the rear floor 1C are assembled, while the body parts such as the body side 2.3 are assembled in the body main line. It is assembled.

Conventionally, as described in Japanese Unexamined Patent Publication No. 57-84275, the left and right body sides 2.3, which are assembled to the floor main 1 that has been transferred by a transfer device, grasp these from the outside. It was becoming supported by fixtures. That is,
In the above publication, as shown mainly in Figures 4 and 5,
Fixtures for the body side are arranged on both the left and right sides of the car body, and each fixture V-
were installed on both the front and back sides of the reversing device so that one fixture could support two types of workpieces, that is, the body sides.

(Problems to be Solved by the Invention) However, in the conventional vehicle body assembly apparatus as described above, body side fixtures are provided on both left and right sides of the main floor of the vehicle. When installing each fixture on the stage, it is necessary to achieve positional accuracy when installing each fixture separately on the left and right sides, and the mutual positional relationship of the left and right fixtures must be determined with a predetermined accuracy. Needless to say, a lot of effort was required to achieve these precision tasks.

In addition, since each fixture is integrally installed on both the front and back sides of the reversing device, for example, when assembling work is performed using the front fixture, the work efficiency is improved even though the back fixture is not used. However, due to reasons such as changing vehicle models due to safety reasons, it was not possible to perform installation (adjustment, maintenance, etc.) of the fixture, and the line had to be stopped in that case. .

The present invention has been made in view of the problems of the prior art described above, and it is possible to easily improve the accuracy of fixtures, and moreover! The purpose of this system is to improve the efficiency of assembling a vehicle body by making it possible to adjust the fixtures without stopping the line when the F type is changed.

(Means for Solving the Problems) The present invention provides a vehicle body assembly device for aligning vehicle body parts such as body sides, an air box, a rear waist, and a rear panel with respect to a main floor. A lifter for raising the floor main is installed below the transport means for transporting the floor main, a rail for movably supporting the loader is laid above the storage and transport means for accommodating the vehicle body parts, and the loader A fixture for gripping each of the vehicle body parts from the inner surface is attached to the lifter, a part assembly means is installed for assembling other vehicle body parts near the lifter, and the floor main and the vehicle body part are gripped by the fixture. The vehicle body assembly apparatus is characterized in that a welding means for welding the floor main and the vehicle body parts to each other under the above conditions is installed near the lifter.

(Function) Each car body part, such as the floor main, is gripped by the fixture from its inner surface, and the accuracy of the assembly position of the car body part with respect to the fixture can be adjusted in a short time. The fixture configuration can be freely set.

(Example) Hereinafter, an example of the present invention illustrated in the drawings will be described. 1
1 to 3 are diagrams showing one embodiment of the present invention, in which a transfer bar 20 serves as a conveying means for conveying the floor main 1 and the rear panel 6.As shown in FIG.
It is installed on top of 1. This transfer par 20
The floor main 1 and the rear panel 6 are sequentially conveyed by moving forward and backward and in the vertical direction. At a predetermined position above the floor main 1!21, a lifter 22 for raising the floor main 1 is installed below the transfer bar 20, as shown in FIG.

As shown in FIG. 1, an air box storage 23 is located at a predetermined distance from the transfer parlor 20 and stores a large number of air boxes 4 for different vehicle types, and a rear waist storage 23 stores a large number of rear waist bars 5. A waist storage 24 is installed adjacent to each other. At a position opposite to the air box storage 23 and rear waist storage 24 via the transfer par 20, there is an air box storage 23a that accommodates a large number of air boxes 4 of other vehicle models, and an air box storage 23a that accommodates a large number of air boxes 4 of other vehicle models. Rear West 1~ which accommodates a large number of Rear West Basel 5
Storage 24a is installed adjacent to each other. The upper part between these air box storage 23 and rear waist storage 24, and the air box storage 23
A rail 25 is installed between the rear waist 1 and the upper part of the storage 24a, straddling the transfer par 20 serving as a conveying means.

As shown in FIG. 2, a loader 26 is installed on the rail 25 to transport the air box 4 and the rear waist 5 and install it on the floor main 1 transported by the transfer par 20. movably supported. As shown in the figure, this loader 26 has wheels 26a that move on rails 25, and is further equipped with a fixture 28 that can be moved up and down by a cylinder 27. As shown in FIG. 3, this fixture 28 is connected to the left and right body sides 2.3 with respect to the floor main 1, the air box 4, the rear waist 5, and the rear panel 6.
A large number of clampers 2 are used to grip the vehicle from inside the vehicle body.
9 is installed.

In the vicinity of the lifter 22, as shown in FIG. 1, body sites 1 to 30 for accommodating a large number of left side body sides 2 are installed along the transfer par 20, and similarly, In the vicinity of the lifter 22, body sites 1 to 31 for accommodating a large number of right body sides 3 are installed along the transfer par 20. The body side assembly robots 32 and 33 for assembling these body sides 2.3 to the floor main 1 use the base 21 as a means to assemble the parts.
are mounted adjacent to the body side storages 30, 31, respectively.

The rear panel 6, which has been transported together with the floor main 1 by the transfer par 20, is raised up and the floor main 1
An erecting device 33 is installed on the base 21 as a means for assembling parts.

In order to spot-weld each of the automobile body components such as the floor main 1 and the like together with the fixture 28, a welding robot is installed on the base 21 as shown in FIG. 34.35 is installed.

Next, in order to assemble and weld together the parts 1 to 6 constituting the automobile body shown in FIG. 4 using the vehicle body assembly apparatus of the present invention shown in FIGS. 1 to 3, the loader 26 is Move to the position indicated by A in the figure, drive the cylinder 27 at this position to lower the fixture 28, and the fixture 1
! 28, the air box 4 of the air box storage 23 and the rear waist bar cell 5 of the rear waist storage 24 are gripped by the clamper 29.

In this state, the cylinder 27 is driven to raise the fixture 28 holding the air box 4 and rear waist 5, and move the O-der 26 as shown by the solid line in FIG.
It is moved to a position above the transfer par 20, and the fixture 28 is lowered by driving the cylinder 27 again. Then, the floor main 1 transported by the transfer parr 20 is lifted by the lifter 22, passed to the fixture 28, and held by the clamper 29.

Next, the left and right body sides 2.3 stored in the respective body side storages 30 and 31 are gripped by the body side assembly robot 32 and the fixture 28 by the transfer clamper 29. Then, the rear panel 6 that has been conveyed together with the floor main 1 by the transfer parser 20 is raised by the erecter 1133, passed to the fixture 28, and gripped by two clampers.

In this way, floor main 1, body nide 2.3
, the air box 4, the rear waist bar cell 5, and the rear panel 6 are gripped centering around the fixture 28 on the inner surfaces of these vehicle body parts,
Welding robots 34 and 35 perform spot welding at predetermined locations of each part.

This welding operation allows the automobile parts to be assembled together.

Next, all two clampers installed on the fixture 28 are unclamped, the fixture 28 is evacuated from the assembled vehicle body by the cylinder 27, and the lifter 22 is driven to assemble the fixture 28. The vehicle body in this state is placed on the transfer bar 20 and transported to the next process. The fixture 28 is loaded by the loader 26.
Return to the position indicated by 8 in FIG. 2 and perform the next assembly operation. In addition, when assembling other vehicle models III, the air box 4 housed in the air box 1-rage 23a and the rear waist bar cell 5 housed in the rear waist storage 24a are moved to the fixture 28 using a clamper. 19 so that it can be assembled to the floor main 1 for medium-sized materials. Also, when the car model is changed, it is important to install another fixture other than the one being assembled even when the line is in operation!
I can adjust it.

(Effects of the Invention) As described above, according to the present invention, all of the vehicle body components such as the floor main and body sides are gripped from their inner surfaces by the fixtures, so that vehicle body components such as the air box cannot be held as in the conventional case. It is no longer necessary to use a loader to transport each fixture, making it possible to ensure the accuracy of the left and right sides of the fixture. In addition, it is now possible to freely set the configuration of fixtures for different vehicle types outside the production line, and body side fixtures can be adjusted without stopping the production line. Furthermore, since the fixtures are located inside the vehicle body, the entire assembly of armor is made compact, which frees up a lot of space on the line, making it possible to place robots.

[Brief explanation of drawings]

FIG. 1 is a plan view showing a vehicle body assembly apparatus according to an embodiment of the present invention, FIG. 2 is a front view of FIG. 1, and FIG. 3 is an enlarged front view showing the fixture shown in FIGS. FIG. 4 is a perspective view showing vehicle body parts. 1...Floor main, 2.3...Body side, 4
... Air box, 5... Rear waist bar cell, 6... Rear panel, 20... Transfer bar, 22... Lifter, 23.23a... Air box storage, 24.24a... Rear waist storage, 25...Rail, 26...Loader-127・
...Cylinder, 28...Fixture, 29...Clamper, 30131...Body side storage, 3
2...Body side assembly is done by robot, 34.34.
...Welding robot. Patent applicant Nissan Motor Co., Ltd. Figure 4

Claims (1)

[Claims] In a vehicle body assembly device for assembling vehicle body parts such as body sides, an air box, a rear waist, and a rear panel to a floor main, a lifter for raising the floor main is installed below a conveyance means for transporting the floor main, A rail for movably supporting the loader is laid above the storage for storing the vehicle body parts and the transport means, a fixture for gripping each of the vehicle body parts from the inner surface is attached to the loader, and a fixture is attached to the loader near the lifter. Installing a parts assembly means for assembling vehicle body parts,
A vehicle body assembly apparatus characterized in that welding means for welding the floor main and the vehicle body parts together while the floor main and the vehicle body parts are gripped by the fixture is installed near the lifter.