JPS5841682A - Welding device in conveying line - Google Patents

Abstract

PURPOSE:To decrease carriages and ancillary jigs by providing a suspension hooking and conveying line above a returning line to form an addition welding area, and passing carriages through the returning line without stopping under the addition welding area. CONSTITUTION:The work 4 is tack welded in a prescribed tack welding station provided on a work conveying line 2; thereafter, the work moves and arrives at the terminal end of the line 2. The tack welded work 4 moves while placed on a carriage 3 and is received on the cradle of a transferring machine. The cradle moves upward, and in this position the work 4 is separated from the carriage and is held by a suspension hooking type work conveyor 11. The carriage 3 is held empty. The cradle carrying the empty carriage 3 descends down to the same level as a returning line 9. Thereafter, the carriage 3 is delivered onto the line 9, and is returned at a high speed. On the other hand, the work 4 suspended and hooked by the conveyor 11 is carried out in the addition welding station on a suspension hooking conveying line 10. Then the work is conveyed to a prescribed position by the conveyor 11.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a welding device used in a conveyance line for workpieces (workpieces, hereinafter simply referred to as workpieces).

In the assembly process of automobiles, etc., it is known that welding is carried out separately into a tacking process and a lighting addition process. It is also known to do.

However, with these conventional techniques, the return speed of empty trucks is slow, and each truck and a relatively large number of jigs attached to it are required.
It was. Furthermore, since the return line for the empty truck was also provided on the same floor as the work transport line, it had the disadvantage of occupying a large space.

An object of the present invention is to provide a welding device for use in a workpiece conveyance line that eliminates the above-described problems while maintaining high production performance and saves labor.

In this configuration, in the equipment that performs welding assembly W of the workpieces after passing through the tack welding area and the multi-light welding area, the workpiece is transported using a trolley, and the tack welding machine is installed on the workpiece transport line. A trolley return line is installed parallel to the workpiece (reducing line), and above the return line is a suspended conveyance line using a suspended workpiece conveyor. A welding machine for additional lights is installed on the suspended conveyance line to form an expanded welding area. A loading machine is provided at r#U+ of the workpiece transport line and the hanging transport line, and the truck passes through the return line without stopping below the multi-light m liquid area.

With this configuration, during the lighting addition process, the empty trolley is returned from the return line at high speed without stopping below the suspended workpiece conveyor, so the number of trolleys kept on the return line can be reduced, and the number of trolleys and the The attached jig can be completely reduced. By installing the workpiece return line above the conveyance line, the work space can be reduced compared to the conventional method, and the workpiece return line work can be placed above the conveyance line. f- By upwardly operating the transfer machine that transfers the loaded cart, it is possible to eliminate the slot/slot mechanism of the hanging workpiece conveyor. Furthermore, these processes can be carried out on the first floor, making line management easier. Furthermore, these advantages also lead to savings in general expenses.

Hereinafter, embodiments will be described with reference to the drawings.

Referring to FIG. 1, a conveyance line 2 is provided on a predetermined 70-way level in a factory, and a conveyor line 2 is provided on a surface 1 of a 70-degree wall.
is placed in a predetermined state by a jig 5. By moving the workpiece 4 #St placed on the trolley 3 and the trolley 3,
The tree should be sent in the direction of arrow 6. A return line 9 for returning the empty cart 3 at high speed in the direction of the arrow 8 is installed on the frame 7 provided on the 70ヮ surface l, and this return line 9 is connected above the workpiece transport line 2. They are located almost parallel to each other. Above the return line 9, a suspended conveyance line IO is provided. A hanging type workpiece conveyor machine 11 is disposed on this hanging conveyance line lO. This hanging type workpiece conveyor machine 11 holds the workpiece 4 that has completed the tacking process, and these four works are moved in the direction of the arrow 12 while being held by the hanging type workpiece conveyor machine 11. It is supposed to be done.

Referring to FIG. 2, at the end of the workpiece conveyance line 2,
In addition, a transfer machine 13 is arranged at the starting end of the return line 9 and the suspended conveyance line 10, and the platform 13a is used for the workpiece conveyance line 2, the return line 9, and the suspended workpiece@□transfer. A cart 3 is placed at each level position of the position where the machine 11 holds the workpiece 4 and can move up and down.

Referring to FIG. 3, tack welding machines 14a and 14b are arranged on both sides of the workpiece 40 at a tacking station (not shown) located at a predetermined position on the workpiece conveyance line 2. Work 4 is placed on the suspended workpiece transport mii in the field hitting station (not shown) located at the fixed position of 79i above.
4% field welding on both sides of the position where is held!
15a and 15b are arranged. As a result, the workpiece transport line 2 forms a tack welding area, and the entire spot welding area is formed during the tTS transfer.

With the above configuration, workpiece 41-t workpiece conveyance line 2
It is tacked at a predetermined tack welding station or tack welding area above, and moves in the direction of the arrow 6 to reach the end of the line 2. After this tack welding, the workpiece 4 is placed on the trolley 3.
The transfer device 13 moves in the direction of the arrow 16 until the transfer device 13 is placed on the table 13a. Then, this receiver moves upward as shown by the arrow 17 on the platform 13 and reaches the level ^ in the figure. At this position, the workpiece 4 is separated from the cart and the suspended workpiece conveyor 11 is a post-mill cotton conveyor.
The carriage is held in the 9 state. 9 With the carriage 3 placed thereon, the receiver is lowered to the level 8 in FIG. 3, which is the same level as the carriage 13 m#'i return line 9.

Thereafter, the nine-carriage 3 is sent out onto the return line in the direction of the arrow 18 and returns at high speed. On the other hand, the workpiece 4i1j held by the hanging type workpiece conveyor 11 is lighted at a field welding station provided at a predetermined position on the hanging conveyance line, that is, in the expansion welding area. After the workpiece 4Fi, the workpiece 4Fi is transported to a predetermined position 117 in the direction of arrow 19 by a work type transporter, that is, a hanging type workpiece transporter &11.

Therefore, according to the present invention, since nine carts are returned at high speed, the number of carts and their attached jigs can be reduced. Further, since the workpiece transfer line 2'' and the return line 9 are located above and below, it is possible to reduce the space occupied by the device.Furthermore, as mentioned above, the workpiece transfer line 2'' and the return line 9 are located vertically, so that the width occupied by the device can be reduced. 8-phase workpiece conveyor 11
This eliminates the need for a drop-lift mechanism for transferring the workpiece 4 in the J method, and simplifies the mechanism of the J-squeezing machine. Furthermore, the above-mentioned equipment can be deployed in the workplace in the space on the first floor, making line management easier.

[Brief explanation of drawings]

Fig. 1 is an overall schematic diagram of an embodiment of the present invention, Fig. 2 is a schematic diagram of the vicinity of the transfer machine of the embodiment of the present invention, and Fig. 3 is a tack welding area and an enlarged area of the embodiment of the present invention. FIG. 3 is a schematic diagram of the vicinity of the revised welding area. Explanation of symbols 1...70 points, 2...Work transfer line, 3...
- Trolley, 4... Work, 5... Jig, 7... Frame, 9... 8. Conveyance line, 10... Hanging conveyance line,
11...Hanging type work transfer machine, 13...Transfer machine, 1
4... Welding machine for tacking, 15... Welding machine for spot welding. Patent applicant: Toyo Kogyo Co., Ltd.

Claims (1)

[Claims] In a device that performs fusion welding of the workpiece after passing through the tack welding area and the multi-light welding area, a workpiece transfer line using a trolley is installed, and a tack welding machine is installed on the workpiece transfer line to perform tack welding. An attached liquid area is formed, a return line for trolleys is provided in parallel to the workpiece transfer line, a suspended conveyance line using a hanging type workpiece conveyor is provided above the return line, and the suspended conveyance line is An additional welding machine will be installed to form an additional welding area.
After tack welding, a transfer machine for transferring the workpiece from the trolley to the hanging workpiece transport machine is provided between the workpiece transport line and the hanging transport line, and on the return line, the trolley is Welding equipment in a conveyor line that passes below the light welding area without stopping. □