KR19980048054A - Main welding jig of body assembly line - Google Patents

Abstract

The present invention converts the side bogie of the main welding jig constituting the body assembly by combining the respective parts in the body assembly line from the rotational motion method to a linear motion method to accurately position and shorten the working time to improve productivity The main welding jig of the body assembly line, which is mounted on the bogie base 22 and the vertical frame 24 on the bogie base 22, which slides on the fixing base 20, the plurality of positioning pins 30 , A side plate conveyed by the setting plate 26 with the mounting plate 26, the mounting portions 34a and 34b seated on the positioning pins 30 and 32 of the setting plate 26 and the first overhead tank 40. A side bogie 34 having grippers 36 and 38 for clamping the assembly 10; An underbody bogie 48 for conveying the underbody by the floor chariot 50; It consists of a loop bogie 44 which conveys the roof panel 18 by the 2nd overhead tank 46. As shown in FIG.

Description

Main welding jig of body assembly line

The present invention relates to a main welding jig of a body assembly line, and more particularly, to convert the side bogie of the main welding jig constituting the body assembly by combining the respective parts in the body assembly line from the rotational motion method to a linear motion method It is related with the main welding jig of the body assembly line that can improve the productivity by precisely regulating the position and shortening the working time.

Generally, a car is divided into a body and a chassis, and the body is a part of the car, which stores and transports the engine compartment and the engine room where the engine is installed. It can be divided into a trunk compartment.

Here, the body is composed of a roof panel, a combination of several parts such as a side assembly or an underbody into a single body assembly, in which the parts are welded together to make a large assembly by a robot welding gun. Next, transfer to the main welding process to combine. At this time, the main welding jig for welding each of the parts is the equipment as shown in FIG.

Figure 1 is a side view showing the configuration of a conventional main welding jig, the side bogie 8 moving the side assembly 10 has a structure that rotates about the rotation axis (6).

In view of the overall configuration thereof, the support 4 is slidably mounted to the fixing table 2, the rotation base 7 rotatably mounted to the support 4 about the rotation shaft 6, and the rotation base. A side bogie 8 attached to (7) to switch the side assembly 10 from a horizontal position to a vertical position, a floor bogie 12 driven by the under shuttle 3 to transfer the underbody, and an overhead It consists of the roof cart 16 which conveys the roof panel 18 by the tank board 5.

In the process of forming the body assembly 14 using the main welding jig of this structure, when the side assembly 10 carried by the overhead tank 1 is seated on the side bogie 8, the side bogie 8 ) Is positioned while descending, and then moved horizontally in a vertically arranged state as shown by the virtual line by the rotation base 7 which is rotated about 90 ° about the rotation axis 6.

Next, the underbody and the roof panel 18 respectively introduced by the floor bogie 12 and the roof bogie 16 are combined to be assembled into a single body assembly 14 and welded together.

In the main welding jig of the body assembly line of the prior art having such a configuration takes a lot of time to complete a single body assembly, and because the structure to rotate the side body bogie, the movement process is unstable and deteriorates the quality. In addition, since the floor cart is driven by using an under shuttle of the rack and pinion type, there is a problem that severe noise occurs during driving.

The present invention devised to solve such a problem is the main welding of the body assembly line that can improve the productivity by reducing the position regulation and the cycle time per unit by converting the side bogie from the rotational movement method to the linear motion method The purpose is to provide a jig.

1 is a side view showing the configuration of a conventional main welding jig

Figure 2 is a side view showing the configuration of the main welding jig according to the invention

♣ Explanation of symbols for the main parts of the drawing

14 body 16 side assembly

18: roof panel 20: stand

22: Balance base 24: Vertical frame

26: Setting plate 30, 32: Positioning pin

34a, 34b: Mounting portion 36, 38: Gripper

40, 46: First and second overhead tank groups 42: Hook

48: Underbody trolley 50: Floor trolley

In the main welding jig of a body assembly line, the object of the present invention is an underbody bogie for conveying an underbody by a floor chariot and a loop bogie for conveying a roof panel by a second overhead chariot. And a side plate transported by a first overhead tank mounted on a bogie base that slides in a bogie, on a vertical frame on the bogie base, with a setting plate having a plurality of positioning pins, a mounting portion seated on the positioning pin of the setting plate It is achieved by a main welding jig of a body assembly line which includes a side bogie with a gripper for clamping the assembly.

According to the present invention, by improving the position regulating method and the mounting method, the cycle time per unit of completion of the side assembly is shortened, thereby increasing the productivity.

Hereinafter, with reference to the accompanying Figure 2 will be described in detail the main welding jig of the body assembly line according to a preferred embodiment of the present invention.

Figure 2 is a side view showing the configuration of the main welding jig according to the invention.

As shown here, in the main welding jig according to the present invention, instead of the conventional rotary motion method, the side bogie 34 holding the side assembly 10 replaces the bogie base 22 on the fixed base 20. While sliding, the side assembly 10 carried by the first overhead tank 40 is transported into the process.

In the schematic configuration of the side bogie, the base 20 is spaced from the floor by legs 19 at regular intervals, the bogie base 22 mounted so as to slide on the base 20, and the bogie base ( 22, vertically positioned on the vertical frame 24 having upper and lower positioning pins 30 and 32, and on one side thereof, positioned on the positioning pins 30 and 32 of the vertical frame 24. The mounting portions 34a and 34b are formed, and on the other side, the side carts 34 are formed with grippers 36 and 38 clamping the side assemblies 10 carried by the first overhead tank 40. have.

Here, the vertical frame 24 is supported in the vertical state by the support 28. Moreover, the hook 42 is provided in the 1st overhead tank 40, and the side assembly 10 mounted in the side trolley | bogie 34 is conveyed in a vertical state. Accordingly, the bogie base 22, which is driven by the first overhead tank 40 and mounted on the grippers 36 and 38 of the side bogie 34, slides on the stator 20. To enter the process.

In addition, the underbody trolley 48 of the present invention carries the underbody into the process while being transported by the lower floor tank 50, and the upper roof trolley 44 is driven by the second overhead tank 46. The roof panel 18 is transported into the process to form the body assembly 14.

Next, a process of making the body assembly 14 using the main welding jig of the present invention having such a configuration will be described.

First, the side trolley 34 conveyed by the first overhead tank 40 is seated on the positioning pins 30 and 32 of the setting plate 26 and at the same time, after the positioning is completed while rising, the fixing table 20 The side bogie 34 enters the side assembly 10 into the process by means of a vertical frame 24 which slides along the side wall.

Next, while the underbody trolley 48 is raised by the floor chariot 50, the underbody enters into the process, and the second overhead tank 46 enters the roof panel 18 to enter the body assembly ( 14).

According to the main welding jig of the body assembly line according to the present invention described above, by converting the side bogie from the rotational movement method to the linear movement method, accurate positioning and reduce the cycle time per unit that the side assembly is completed to reduce productivity It has an effect that can be improved.

Claims (1)

The body assembly line includes an underbody trolley 48 for conveying the underbody by the floor tram 50 and a roof trolley 44 for conveying the roof panel 18 by the second overhead tram 46. In the main welding jig, it is mounted on a trolley base 22 which slides on the fixing base 20, and on the vertical frame 24 on the trolley base 22, and has a plurality of positioning pins 30 and 32. The side assembly 10 transported by the setting plate 26, the mounting portions 34a and 34b seated on the positioning pins 30 and 32 of the setting plate 26 and the first overhead tank 40; A main welding jig of a body assembly line comprising a side bogie 34 with clamping grippers 36, 38.