JPS585305B2 - Squeezing roller device for fabrics, etc. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a squeezing roller device for squeezing fabric, etc., which is capable of appropriately distributing pressure between rollers in the width direction for squeezing a spread fabric.

In general, it is natural that in dyeing treatments, etc., it is desired that there be no dyeing spots on the cloth that has been dried after dyeing, or that there be no drying spots on the cloth that has been washed and dried.

Therefore, in order to prevent the generation of these flames, conventionally, the squeezing roller applied before the drying process, etc., is usually made uniform in the width direction of the roller.

However, in reality, even if the material is squeezed uniformly as described above, staining spots or drying spots still occur from time to time due to non-uniform processing in the width direction that tends to occur in the subsequent drying and coloring steps.

Therefore, recently, dyed spots or dry spots are detected during the processing process,
In response to this occurrence, a difference in aperture is provided between the widths of the aperture rollers.

However, in order to create this difference in aperture, the conventional methods have been to make the pressure roller have a convex curved surface, or to change the magnitude and direction of the pressure applied to both ends of the roller by a pressure mechanism, or to change the direction between the rollers. As a completely different method, the core of the roller has been partially expanded and curved using hydraulic pressure, but in either case, the mechanism is complicated, the operation is complicated, and the equipment cost is high, so it is not very practical.

In addition, as in Japanese Patent Publication No. 52-2017, the lower roller has a convex curved surface and is pressed against the soil, and the intermediate roller is pressed upward or downward to adjust the squeezing pressure. However, this method requires a lot of effort to manufacture the lower roller, requires a large number of pressurizing devices, and has a complicated structure (the installation of the pressurizing means for the intermediate roller is difficult in relation to the upper and lower rollers). The disadvantage is that it is complicated (complicated) and expensive.

In view of the above-mentioned drawbacks, the present invention provides three methods in which the upper roller and the intermediate roller are used as squeezing rollers, and the lower roller is used as a pressure roller.
We have improved this set of squeezing roller devices to provide a simplified squeezing roller device that can easily and freely adjust the squeezing difference between the roller widths while keeping the pressure from the pressure mechanism constant. The purpose is to

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the structure of the present invention shown in the drawings will be described below.

As shown in FIG. 1, this squeezing roller device includes three upper rollers 1, an intermediate roller 2, and a lower roller 3 stacked one on top of the other as a set, and each roller is a parallel roller.

The upper roller 1 and the intermediate roller 2 are rollers that apply a squeezing action to the cloth 4 by passing the cloth 4 between the two rollers, and are usually soft rollers with an elastic body 5 made of rubber or the like as shown in the figure, and the lower roller 3 is a roller that applies a squeezing action to the cloth 4. This is a hard steel roller.

The upper roller 1 and the intermediate roller 2 are fixed in position, and the upper roller 1 is used as a driving roller, and the intermediate roller 2 and the lower roller 3 are rotated sequentially from this roller in a driven manner.

The load applied to the roller portion for squeezing is applied from above to both end shaft portions of the upper roller 1 by an appropriate pressure mechanism (not shown) as in the conventional manner.

The contact line 6 between the intermediate roller 2 and the lower roller 3 in the pressurized state is that the intermediate roller 2 has a soft surface and the lower roller 3 is a hard roller, so the soft surface of the intermediate roller is slightly indented, and the contact line 6 has a slight width. Both rollers press against each other in surface contact.

Here, the lower roller 3 is not fixed in position, but is a displacement roller whose both ends can swing slightly relative to each other with the central portion on the contact line 6 with the intermediate roller 2 as a fulcrum, as shown in FIG.

In order to make the present invention clearer, the drawing shows the swing displacement width of the lower roller in an enlarged manner; however, this is actually not the same, taking into consideration the roller width, diameter, contact state of both rollers, pressing force, etc. The width is very small, and the oblique angle of the axes of both rollers 2 and 3 is 1 degree or less.

Because of this level of oblique rotation, the two rollers do not come out of contact and there is no problem with the driven rotation of one of the rollers.

Due to this swinging displacement of the lower roller 3, the entire pressure contact force between the intermediate roller 2 and the lower roller 3 is distributed over the width of the rollers, and the contact line of both rollers is the swinging fulcrum of the lower roller, that is, the diagonal intersection of both roller axes. It is strongest at and near the center, and gradually weakens from there toward both ends.

The pressing force between the intermediate roller and the lower roller is immediately transmitted to the opposing portion as an equal pressure between the upper roller 1 and the intermediate roller 2, which perform a squeezing action.

Therefore, as the swing angle of this lower roller becomes more dog-like, the contact with the intermediate roller becomes closer to a point contact, so the pressure contact force at the diagonal intersection point increases, and accordingly, the pressure contact force at other parts becomes smaller. Become.

First, the operating state of the device of the present invention will be explained.

As shown in Figure 1, when a load is applied to the three upper, middle, and lower rollers 1, 2, and 3 stacked vertically in the same column, the load is applied to both ends of the rollers near the shafts at both ends. As the load is applied, the fabric is tightly squeezed on both sides.

As mentioned above, the pressure contact force between the lower roller 3 and the intermediate roller 2 causes a pressure difference between the roller widths due to the swinging displacement of the lower roller 3, and this pressure difference is also related to the swinging angle of the lower roller. The pressure is strongest at the dynamic fulcrum, and appears as a smaller pressure toward both ends of the roller.The pressure, which was initially strong at both ends of the roller, becomes weaker, and conversely, the pressure at the center becomes stronger.

Therefore, even if the lower roller is slightly displaced by a swing angle of 1 degree or less, the pressure at both ends of the roller weakens during that time, and the pressure increases at the center, which balances out and becomes uniform pressure across the width of the roller. The pressure is strong at the ends of the roller, and weaker at both ends of the roller.

This pressure difference or equal pressure between the intermediate roller and the lower roller immediately acts as an equal squeezing force between the upper roller and the intermediate roller.

The pressure difference or equal pressure as described above can be realized under constant pressure by a pressure mechanism.

Therefore, dyeing spots may occur on cloth that has been dyed and squeezed.
Alternatively, if drying spots occur on the cloth that has been dried after squeezing, depending on the location where these spots occur under the above-mentioned constant pressure condition, for example, if there are medium-dark colored spots, As shown in FIG. 2, both ends of the lower roller 3 are slightly swung back and forth with respect to the center of the lower roller 3 to strengthen the roller pressure contact at this portion.

Similarly, when the edges of the cloth are insufficiently dried, the axis of the lower roller 3 is set parallel to the axis of the intermediate roller 2.

Furthermore, depending on the state of occurrence of these spots, the pressure between the intermediate roller and the lower roller may be made equal across the width of the rollers to eliminate them.

In the above embodiment, the swinging fulcrum of the lower roller is set at the center of the line of contact with the intermediate roller, but depending on the situation, this fulcrum may be displaced left and right.

As explained above, the present invention provides a pressurized squeezing roller device in which three rollers are stacked one on top of the other, and the upper roller and the intermediate roller are used as squeezing rollers, and the three rollers are all parallel rollers. Since only both ends of the upper roller are pressurized downward, and the lower roller is a displacement roller whose both ends can swing slightly relative to each other using the center of the contact line with the intermediate roller as a fulcrum, the pressing mechanism is It is only necessary to provide it at both ends of the upper roller, and the squeezing pressure can be adjusted simply by keeping the pressure applied by the pressure mechanism at a predetermined load and swinging the lower roller to shift the load to its swing fulcrum. Therefore, during the swinging displacement of the lower roller, the pressure contact force with the intermediate roller can be adjusted from strong at both ends of the roller to equal pressure and then strong at the center of the roller, and the roller width can be increased. If a difference in aperture is easily formed between the two, and dyeing spots such as medium-dark or medium-dark occur during dyeing, or drying spots occur during drying, please check the location and degree of occurrence of these spots. By adjusting the degree of squeezing, defects caused by dyeing, drying, etc. can be minimized.

According to the present invention, a pressure adjustment mechanism is incorporated into the conventional pressure mechanism, or the pressure roller has a curved peripheral surface.
Alternatively, there is no need for a complicated mechanism such as a hydraulic mechanism to partially bulge the core of the roller, and the accompanying complicated operations, and instead of using three rollers stacked one above the other as parallel rollers. The pressure mechanism can also be simply configured to apply a predetermined pressure to both ends of the upper roller, and simply swing and displace the lower roller, so it can be easily implemented with a simplified configuration. can do.

In particular, in the present invention, the lower roller may be a parallel roller,
There is no need to make it a convex curved surface, making it easy to manufacture.
In addition, it has the feature that it is extremely easy to correct wear, and since it is only necessary to displace the lower rollers crosswise, the upper roller and intermediate roller that squeeze the fabric can remain parallel, and the fabric will not shift. do not have.

Therefore, according to the present invention, a squeezing roller device that is inexpensive and easy to handle can be obtained.

[Brief explanation of drawings]

The drawings show the main points of this squeezing roller device. Figure 1 shows the normal state in which three rollers, upper, middle, and lower, are stacked vertically, and Figure A is a front view, and Figure B is a front view. The figure is a vertical side view of the same, and Figure 2 is an example in which the lower roller is oscillated.
Figure A is a top view thereof, and Figure B is a longitudinal cross-sectional side view taken along line A-A. 1... Upper roller, 2... Intermediate roller, 3... Lower roller, 6... Contact line between intermediate roller and lower roller.

Claims (1)

[Claims] In a pressurized squeezing roller device in which 13 rollers are stacked one on top of the other, with the upper roller and intermediate roller serving as squeezing rollers, all three rollers are parallel rollers, and only both ends of the upper roller are directed downward. 1. A squeezing roller device for cloth, etc., characterized in that the lower roller is a displacement roller which can be pressurized and whose both ends can swing slightly relative to each other with the center of the contact line between the lower roller and the intermediate roller as a fulcrum.