JPS6348687Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a liquid removing roll device for wiping off cleaning liquid adhering to both sides of a strip-shaped metal material that is transported in parallel in multiple strips.

[Conventional technology]

Metal strips with a thickness of 0.15 to 0.25 mm and a width of 18 to 75 mm, which are mainly used to mold lead frames for integrated circuits, are treated with organic solvents such as trichlorethylene or water to remove oil from the surface. Cleaned by. Such a cleaning device passes a large number of strips through a cleaning tank, so after passing through the cleaning tank, the cleaning liquid adhering to both sides of the strip is wiped off by passing it between a pair of rubber-lined wiping rolls. After that, they are led to the drying room. However, when a large number of strips, which are being stretched at a predetermined tension and transported in parallel, are sandwiched between wiping rolls, each strip shifts laterally, and if adjacent strips overlap each other, there is a risk of damage. It was hot.

[Purpose of invention]

Therefore, the present invention aims to prevent the strip material from shifting laterally on the above-mentioned wiping roll.

[Means to achieve the purpose]

In order to achieve this purpose, the liquid draining roll device of the present invention has small protrusions protruding from part of the outer periphery of both ends of the wiping roll, which is higher than the thickness of the strip material, so that both wiping rolls sandwiching the strip material are A small protrusion is interposed between the two wiping rolls as they rotate, so that the two wiping rolls are intermittently separated.

[Effect]

When the wiping roll is separated, the multiple strips return to their correct positions due to their respective tensions, eliminating sideways displacement.

〔Example〕

FIG. 1 shows the entire strip cleaning and drying apparatus in longitudinal section. In the figure, 1 is a large number of strips that are transported horizontally in the direction of the arrow, 2 is a liquid tank in which cleaning liquid is circulated by a pump 3, and the strip 1 was passed through and adhered to the liquid tank. Oil is washed away. 4a, 4
b is a pair of rubber-lined wiping rolls 5;
a, 6a and 5b, 6b, the strip material 1 is passed through the strip material 1 to wipe off the cleaning liquid attached to both sides of the strip material 1.
a and 4b are provided at a predetermined distance L apart. Wiping roll 5 at the lower stage of each liquid draining roll device 4a, 4b
Small protrusions 7, 7 having a height approximately three times the thickness of the strip material 1 are protruded from part of the outer periphery of both ends of the strips a and 5b, respectively. Sprockets 8a and 8b are fixed to the rotating shafts of the wiping rolls 5a and 5b, and an endless chain 9 is wound around the sprockets 8a and 8b so that the wiping rolls 5a and 5b rotate in synchronism. On the other hand, the rotation shafts of the upper wiping rolls 6a and 6b are supported by bearings that are vertically movable. Note that 11a, 11
b is an auxiliary roll that is in constant contact with the upper edge of the wiping rolls 6a, 6b;
Wipe off the water film attached to the peripheral surface of b. 12 is a hot air drying chamber that blows hot air onto both sides of the strip 1; 13 is a heater for generating hot air; the hot air heated by the heater is circulated through the chamber 12, and is blown onto both sides of the strip 1 for drying. let

However, in this lever device, when the strip material 1 passes through the liquid tank 2, the cleaning liquid that adheres to both sides of the strip material 1 is first wiped off by being sandwiched between the wiping rolls 5a and 6a, and the remaining residue is removed by this wiping. The dripping cleaning liquid is further sandwiched between wiping rolls 5b and 6b and wiped off. At that time, each wiping roll 5a, 5b, 6a, 6b is
As it is transferred, it rotates in the direction of the arrow due to its frictional resistance. The small protrusions 7 are the wiping rolls 6a, 6b.
The wiping rolls 6a, 6b are
is lifted upward away from the wiping rolls 5a and 5b. Therefore, the wiping roll 5a,
The strapping of the strip 1 by the strips 5b, 6a, and 6b is released and the strip 1 can move freely in the width direction, so even if the strip 1 is shifted laterally, it can be returned to the correct position by its tension. In this embodiment, by providing two sets of liquid draining roll devices 4a and 4b, the liquid can be drained more reliably.
By connecting both wiping rolls 5a and 5b through an endless chain 9, the timing at which the wiping rolls separate from each other for both liquid draining roll devices 4a and 4b can be adjusted. If the wiping rolls 5a and 5b are set to have a phase difference of 180 degrees, the timing of separation can be set alternately.

In this embodiment, the lower wiping roll is provided with small protrusions, but it goes without saying that such small protrusions may be provided on the upper wiping roll. Even if the two wiping rolls are spaced apart by cutting out a part of the circumferential surface that contacts the material, the same effect as that of the small protrusions can be obtained.

[Effect of idea]

As explained above in the embodiments, the liquid draining roll device of the present invention allows the wiping roll to be intermittently spaced apart as it rotates, so that the multiple strips naturally return to the correct position due to the tension. Since the belt material is prevented from shifting laterally, it is advantageous in that it has a simple structure and eliminates troubles when transporting a large number of strip materials in parallel.

[Brief explanation of the drawing]

The drawing shows one embodiment of the present invention.
The figure is a longitudinal sectional view of the entire device according to the present invention, FIG. 2 is a perspective view of the liquid draining roll device, and FIG. 3 is a side view of FIG. 2. 1... Band material, 4a-4b... Liquid draining roll device, 5a, 5b, 6a, 6b... Wiping roll, 7
...Small protrusion.

Claims (1)

[Scope of utility model registration request] A large number of strips are each pulled with the required tension and transported in parallel to pass through the cleaning solution, and then the strips are passed between a pair of wiping rolls to wipe off the cleaning solution adhering to both sides of the strips. A small protrusion that is higher than the thickness of the strip material is provided on a part of the outer periphery of both ends of the wiping roll, and as the both wiping rolls rotate, the small protrusion is interposed between the wiping rolls. A liquid draining roll device characterized in that both wiping rolls are separated intermittently.