JPH0438646B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for conveying a plate-like object, and particularly to a conveying device suitable for conveying a plate-like object whose both sides are coated with a liquid.

In the case of a plate-shaped object such as a printed circuit board, a photoresist solution or the like may be coated on both sides of the object, and the object may be transported in this state through a drying device to be dried.

Furthermore, belt conveyors are generally used to convey not only the above-mentioned printed wiring boards but also various plate-shaped bodies. However, when a belt conveyor is used, the entire lower surface of the plate comes into contact with the surface of the belt conveyor, and there is a disadvantage that the liquid applied to the lower surface of the plate adheres to the belt conveyor. For this purpose, a pair of tapered cones 2 and 3 are attached to the shaft 1 as shown in FIG.
There is a device that transports the plate-like object W with the bottom surface floating so that the edge of the tapered cone W is placed on the surface. If the plate-shaped object W is tilted during transportation, or even if the plate-shaped object W is placed horizontally, if the sizes of the plate-shaped objects W are different when conveying a plurality of plate-shaped objects W in succession, the transportation Since the speeds are different, there is a disadvantage that the plate-shaped bodies overlap each other during conveyance.

Therefore, a conveyance device may be considered in which a large number of rod-shaped rollers of the same diameter are divided into two groups, left and right, and these left and right roller groups are arranged in a V-shape. However, even in the case of such an apparatus, there is a disadvantage that when the plate-like body is transferred to the conveying device, the plate-like body falls from between the conveyance roller at the upstream end and the conveyance roller located next thereto.

The present invention has been made to improve this disadvantage, and its purpose is to transport the plate at a constant speed without being affected by the size of the plate, the mounting angle, etc., and to transport the plate at a constant speed. To provide a conveyance device in which there is no fear that a plate-like object will fall when transferred to the conveyance device.

In order to achieve this object, the conveyance device according to the present invention divides a plurality of conveyance rollers into left and right roller groups based on the conveyance direction, and these left and right roller groups are V-shaped when viewed from the upstream side or downstream side of the conveyance direction. Further, an auxiliary roller is arranged below the upstream side of the left and right roller groups, and a belt is stretched between at least two conveyance rollers in each of the left and right roller groups and the auxiliary roller. This is its gist.

An embodiment in which the conveying device according to the present invention is applied to a drying device will be described below with reference to FIGS. 2 to 4.

FIG. 2 is a front view showing the internal structure of the drying device, FIG. 3 is a perspective view showing the upstream part of the conveying device, and FIG. 4 is a plan view of a part of the conveying device.

In the figure, 10 is the main body of the drying device, and this main body 10
Air blowing ducts 11 for drying are opened on the top and bottom surfaces, and a conveying device is disposed inside.

This conveyance device consists of roller groups 12 and 13 that are symmetrical with respect to the conveyance direction, and these roller groups 12 and 13 are arranged in a V-shape when viewed from the upstream side or the downstream side of the conveyance direction, and Conveying rollers 14 constituting the left roller group 12 (right side in the plan view of FIG. 4)... and the left roller group 1
The conveyance rollers 15 .

As a support means for the conveyance rollers 14 and 15, a support member 16 having support brackets 16a and 16b on both sides is fixed to the center of the main body 10, and its upper end is attached to the side wall of the main body 10 with support brackets 16a and 16b.
Support bracket 17 located higher than 16b
a, 17b, and support brackets 16a, 1
7a, and support bracket 16.
The transport rollers 15 are rotatably supported between the rollers b and 17b. Here, the support bracket 16a, 1
A plurality of supporting brackets 6b, 17a, 17b are provided at equal intervals along the conveyance direction, and these support brackets 16a,
A line connecting the centers of 16b, 17a, and 17b is arranged to be perpendicular to the transport direction, and therefore, the axes of each transport roller 14 and 15 are perpendicular to the transport direction.

On the other hand, drive shafts 18 and 19 are installed in the vicinity of the side wall inside the main body 10 in parallel to the conveying direction.
8, 19 are fitted with helical gears 20, 21, and conveyor rollers 14, 1 are fitted onto these helical gears 20, 21.
Helical gears 22 and 23 fitted onto the shaft of No. 5 are engaged with each other. By rotating the drive shafts 18 and 19 at a constant speed by a motor (not shown), the left and right conveyance rollers 14 and 15 are rotated at a constant speed.

Further, the uppermost transport rollers 14a, 15 are located below the upstream side of the left and right roller groups 12, 13.
a and the conveyance rollers 14b and 15 located next to this
Auxiliary rollers 24 and 25 are provided below the middle between the roller and the roller b. These auxiliary rollers 24, 25 are installed in boxes 26, 27 at an angle, and the boxes 26, 27 are filled with a cleaning liquid 28. A wide belt 29 is provided between the conveyance rollers 14a, 14b and the auxiliary roller 24, and between the conveyance rollers 15a, 15b and the auxiliary roller 25, respectively.
30 is stretched.

By tensioning the belts 29 and 30 upstream of the left and right roller groups 12 and 13 in this way, the plate-shaped body W
The plate-shaped body W does not fall from between the conveyance rollers when the material is transferred from another device to the conveyance device.

Then, the plate-like body W is placed on the left and right belts 29 and 30 so as to straddle the plate-like body W, and the edge of the plate-like body W is aligned with the belt 2.
The conveyor rollers 14 and 1 are in point contact with the rollers 9 and 30.
5 is rotated to convey the plate-shaped body W. Then, the plate-shaped body W is transferred from the belts 29, 30 onto the left and right conveyance rollers 14, 15, and is conveyed to the downstream side.
At the same time, air is blown out from the ducts 11 to dry both the upper and lower surfaces of the plate W.

Also, in parallel with the above conveyance, the belts 29, 30
Since the coating liquid circulates within the boxes 26 and 27, the coating liquid adhering to the belts 29 and 30 from the edges of the plate-shaped body W is cleaned, and as a result, the belts 29 and 3
0, there is no disadvantage that the coating liquid coagulates.

The above is an example of the implementation of the present invention, and the inclination angle of the conveyor belts 14 and 15 may be adjusted arbitrarily, and in the illustrated example, two auxiliary rollers are used. Although the belt is stretched between the conveyance rollers, the belt may be stretched between three or more conveyance rollers.

It is also preferable to provide a squeezing roll (not shown) above the surface of the cleaning liquid so that when the belt comes out of the cleaning liquid tank, the cleaning liquid adhering to the belt is squeezed and removed.

As explained above, according to the present invention, only the edges of the plate come into contact with the conveying device when conveying the plate, so even if the coating liquid is applied to both sides of the plate, the coating liquid is transferred. It is possible to prevent adhesion to the device as much as possible, and it is possible to always transport the plate-like object at a constant speed without being affected by the size or inclination of the plate-like object, and when placing the plate-like object on the conveying device, the plate-like object It has many effects such as being able to effectively prevent bodies from falling between the conveyor rollers.

[Brief explanation of drawings]

FIG. 1 is a front view of a conventional conveyance device, FIG. 2 is a front view showing the internal structure of a drying device to which the conveyance device according to the present invention is applied, and FIG. 3 is a perspective view showing a group of rollers on the right side of the conveyance device. , FIG. 4 is a plan view of a portion of the conveying device. In the drawing, 10 is the dryer main body, 12 is the left roller group, 13 is the right roller group, 14, 14a, 14
b, 15, 15a, 15b are conveyance rollers, 16
a, 16b, 17a, 17b are support brackets,
18 and 19 are drive shafts, 24 and 25 are auxiliary rollers,
26, 27 are boxes, 28 is cleaning liquid, 29, 3
0 is the belt.

Claims (1)

[Claims] 1. A plurality of conveyance rollers that are divided into left and right roller groups based on the conveyance direction, and arranged such that the left and right roller groups form a V-shape when viewed from the upstream side or downstream side of the conveyance direction. , an auxiliary roller disposed below the upstream side of the left and right roller groups, and a belt stretched between at least two transport rollers in each of the left and right roller groups and the auxiliary roller. A conveying device for a plate-shaped object, characterized in that: 2. The plate-shaped object conveyance device according to claim 1, wherein the auxiliary roller is housed in a box, and the box is filled with cleaning liquid.