JPH0124018Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is designed to carry out pre-painting processes such as removing rust, degreasing, rinsing, drying, etc. while transporting an automobile body onto a hanger attached to a trolley conveyor. When going through the immersion treatment process in the liquid,
The present invention relates to a trolley conveyor having a laterally tiltable hanger that allows pretreatment liquid and electrodeposition liquid to adhere well to the upper corners and recesses of the lower surface of the body.

Conventional technology During pre-painting treatment and electrodeposition painting of automobile bodies,
In order to achieve good coating quality, when an automobile body is immersed in a liquid in a pre-treatment tank or an electrodeposition tank, it is necessary to make sure that the treatment liquid and electrodeposition liquid adhere well to the inside and outside surfaces of the car body. It is necessary to prevent foreign matter that has fallen from the movable parts of the overhead conveyor for conveying the body from entering the liquid tank or adhering to the surface of the body.

When the body is immersed in liquid, the air that accumulates in the ceiling of the body or in the recesses on the underside of the body prevents the liquid from adhering to the body. They were releasing it and changing the location of its accumulation. However, when tilting the body back and forth, the body tends to come out above the liquid surface when tilting upward, and there is a risk that the conveyor rail may enter the liquid when tilting downward, so the body is held tilted long enough while passing through the liquid tank. It was difficult to do so.
Furthermore, tilting the body back and forth within the liquid tank
This has the disadvantage that the drive chain of the conveyor is bent up and down, resulting in an unreasonable load.

There is also a hanger device that tilts the object to be coated back and forth without creating a slope on the conveyor rail, but because it has a structure in which the object to be coated is suspended from one point, it is difficult to apply it to long objects such as bodies. In addition, it is necessary to provide a hanger guide to prevent tilting during processing steps other than painting, which is uneconomical.

The problem of falling foreign objects can be solved by using a C-shaped hanger.

Problems to be Solved by the Invention The purpose of the present invention is to propose a trolley conveyor having a hanger that can be tilted laterally, which improves the above-mentioned difficulties and uneconomical points in the conventional tilting hanger device.

Means to Solve the Problem This proposal is a device for transporting automobile bodies loaded on hangers attached to a trolley while being immersed in the liquid of a painting pretreatment/electrodeposition bath. A hanger on which an automobile body is loaded is suspended so that it can tilt laterally, and a cam roller provided on one side of the hanger engages with the cam roller to tilt the hanger laterally together with the automobile body immersed in the liquid. The invention is characterized in that it is provided with a fixed guide rod that allows the

Function: When the hanger is loaded with an automobile body and moves through the pre-painting treatment solution or electrodeposition solution, changing the height of the guide rod to give the cam roller vertical movement will cause
When the hanger tilts laterally, the air accumulated in the recesses on the ceiling of the body or the lower surface of the body is released to the outside or moves from side to side to improve the adhesion of the liquid.

Embodiment In FIGS. 1 and 2, four trolleys 2 running on a trolley rail 1 are connected freely by connecting rods 3 and 4, and the leading end is attached to a pusher provided on a drive chain 6 running on a power rail 5. The trolley 2a is engaged and moved together. A U-shaped connecting member 7 that opens on one side is fixed at the front and rear of the connecting rod 4, and a hanger 8 that is open on one side opposite to the connecting member 7 is pivoted to the lower part of the connecting rod 4 using front and rear pins 9 so that it can tilt freely laterally. do. The hanger 8 is formed by fixing front and rear hanger rods 10 with vertical bars 11, 12, 13, and carries the automobile body M loaded on the lower horizontal portion 14 of the hanger rod 10.

A horizontal shaft 15 that projects laterally at the center of the vertical bar 11
, and the cam roller 16 is pivotally supported thereon. A vertical shaft guide roller 18 is attached to one side of the connecting member 7 so as to prevent the connecting member 7, the trolley 2, etc. above it from shaking laterally when the hanger 8 tilts laterally.

The cam roller 16 contacts the lower surface of the guide rod 19 during movement to maintain the body M horizontally, and when the trolley rail 1 is lowered above the coating pretreatment tank or the electrodeposition tank, the body M is immersed in the liquid in the tank. The robot moves and predetermined processing is performed. In this case, by further lowering the guide rod 19 and tilting the hanger 8, the air remaining in the ceiling corner of the body M, the recessed part on the lower surface of the body, etc. is discharged to the outside or moved from side to side, and the liquid is adhered well. In order for the cam roller 16 to be pushed straight down by the guide rod 19 during the tilting, the circumferential surface of the cam roller 16 is shaped like a convex arc if the lower surface of the guide rod 19 is flat, and shaped like a concave arc if it is cylindrical (Figure 2a). As,
Construct so that the contact surfaces between the two are always horizontal.
As a result, the hanger 8 is not subjected to a horizontal component force from the guide rod 19 when it is tilted laterally, and the suspension structure of the hanger 8 is prevented from being abraded or creaking due to the horizontal component force.

Above the conveyance path on the connecting member 7 and the hanger 8, there are receiving plates 20, 21 for falling foreign matter at necessary locations.
Insert and secure.

Effects of the invention This invention has the above-mentioned configuration, and when the car body being transported is immersed in the liquid of the paint pretreatment tank or electrodeposition tank to perform painting pretreatment or electrodeposition, it is possible to prevent stagnation in each part of the car body. In order to eliminate poor adhesion of liquid due to accumulated air,
Since the hanger is configured to tilt laterally in the liquid, it is easy to move the car body in the liquid in an inclined state for a sufficient length of time, and since the front and rear parts of the hanger are suspended, the posture of the car body is stable. However, it has the effect of being able to be used economically in processing processes other than painting.

[Brief explanation of drawings]

FIG. 1 is an elevational view of one embodiment of the present invention, FIG. 2 is a side view of the same, and FIG. 2a is an enlarged side view of the cam roller portion of FIG. 2. 2... Trolley, 8... Hanger, 14... Lower horizontal portion, 16... Cam roller, 19... Fixed guide rod.

Claims (1)

[Scope of utility model registration request] In a trolley conveyor that conveys an automobile body loaded on a hanger attached to a trolley while being immersed in the solution of a painting pretreatment/electrodeposition tank, the hanger on which the automobile body is loaded is placed on the lower horizontal part of the trolley with one side open. Suspended with free lateral tilting.
A trolley conveyor having a laterally tiltable hanger, characterized in that it is provided with a fixed guide rod that engages with a cam roller provided on one side of the hanger to tilt the hanger laterally together with the automobile body immersed in the liquid. .