JPH0370030B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an impact water treatment device that injects fluid (hereinafter referred to as water) onto a fiber sheet.

More specifically, the invention relates to an impact water jet treatment device that sprays water from a large number of holes to impact the surface of a fiber sheet to increase the covering density as much as possible.

[Prior Art] Methods and apparatuses for treating fiber sheets and the like by subjecting sheets to water-flow treatment are already well known.

For example, Tokuko Sho 36-7274, Tokuko Sho 49-20823,
Japanese Patent Publication No. 53-124601, Japanese Patent Publication No. 59-211665, Japanese Patent Publication No. 54-1983
−112285 and others.

However, despite the numerous attempts mentioned above,
The problem of hitting so that the surface of the sheet is covered by the water stream as much as possible, and the problem of hitting so that it is covered as uniformly as possible, has not been achieved, Even if the fibers are arranged in multiple stages, errors occur in the positional relationship due to errors in the multi-stage arrangement or shrinkage of the fiber sheets, resulting in uniform hitting failures. In addition, even though the technique of swinging the perforated hole array (α=90) at right angles is known, it fails to cover more of the impact, resulting in too slow conveyance of the fiber sheet. There were major drawbacks such as excessive movement and the tendency to leave rocking marks on the seat. Also, if you try to increase the area covered, the spray water stream, that is, as it moves away from the nozzle, it becomes diffused water droplets or becomes a turbulent water stream, which ends up being a weak energy blow that moves the fibers. The effect of destroying fibers has become extremely weak. Additionally, if the holes are drilled too close together, the holes may coalesce during machining, resulting in defective holes, or areas where the water jets interfere with each other will occur, which can prevent uniform water flow treatment. I was getting used to it.

[Problems to be Solved by the Invention] An object of the present invention is to provide a device that can hit the surface of a sheet with a stream of water so as to cover as much of the surface as possible, and to hit the sheet so that it is covered as uniformly as possible. The goal is to provide equipment. Moreover, the aim is to be able to swing the ball in order to make even more hits.

Another object of the present invention is to provide a device that prevents as much as possible the bending of fiber sheets during water impact treatment. Other purposes will become apparent further in the description below.

[Means for Solving the Problems] Various studies have been conducted to achieve the above objectives, and the present invention has finally been achieved.

The outline is as follows.

(1) In a device that processes sheets by ejecting fluid, the row of injection holes is not arranged in a direction perpendicular to the moving direction of the perforated belt that conveys the sheet, and the line is α relative to the reference in the perpendicular direction. 1. A percussion water flow treatment device, characterized in that an injection hole arrangement section is arranged having an angle, the angle α is 25 degrees or more and 80 degrees or less, and the hole interval is at least 10 mm or less.

(2) The percussion water flow treatment device according to claim 1, which has a mechanism for swinging the injection holes.

(3) The percussion water flow treatment device according to claim 1 or 2, which has a mechanism in which the injection holes swing in the direction in which the injection holes are arranged.

(4) The percussion water flow treatment device according to claim 1 or 2, which has a mechanism in which the injection holes swing in a direction different from the direction in which the injection holes are arranged.

(5) A device in which the injection hole arrangement is bent in the middle to form two hole arrangement parts, or has two hole arrangement parts, and either of these parts is connected to a perforated belt that conveys the sheet. The percussion water flow treatment device according to claim 1, which has an angle α with respect to a reference in a direction perpendicular to the direction of movement, and the angle α is 25 degrees or more and 80 degrees or less.

The details of the present invention will be explained below with reference to the drawings.

FIG. 1 is an example of an apparatus according to the present invention. 1
is a perforated conveyor belt that conveys the fiber sheet, the arrow is the traveling direction of the perforated conveyor belt 1, 2 is a nozzle portion with a large number of holes arranged, 3 is a bar that holds a nozzle box, 4 and 4' are its support parts, 5 is a vibration generator. 6 indicates a direction perpendicular to the conveyor belt (hereinafter referred to as reference). α is the angle between this and the nozzle arrangement direction.

FIG. 2 is an explanatory diagram showing the hole arrangement and the impact locus of the jetted water flow according to the present invention. 7,7′,7″,7
indicates the arrangement of injection holes. It has an angle α with respect to the reference. The water flow trajectory ejected from the nozzle is indicated by 8, 8', 8'', 8.

FIG. 3 is an example of a conventional jet water treatment device.
9 indicates a nozzle box, and 10 indicates a conveyor belt. The arrow indicates the traveling direction of the conveyor belt 10.
The angle α made with respect to the reference number 9 is 0.

FIG. 4 is an explanatory diagram showing a conventional hole arrangement and a jet water flow trajectory. Holes 11, 11', 11'', 11 indicate a row of injection holes. The angle between this hole arrangement and the reference is 0. Accordingly, the impact locus of the jet water flow is 12, 12', 12. ”, 12. There are many parts of these water flow trajectories that are not affected by the water flow, and these parts are 13, 13',
13", 13. Comparing this with Fig. 2, by adjusting the angle α, 1
It will be easily understood that the unimpacted portion of the water flow, such as 3, is reduced.

FIG. 5 shows a water treatment device having a nozzle with two multi-hole array sections according to the invention. 1
Reference numeral 4 indicates a conveyor belt, and reference numerals 15 and 16 indicate nozzle portions each having a large number of hole arrangements. That is 15
It has a hole arrangement of 16 holes.
In the case of FIG. 1, if the fiber sheet shrinks due to water treatment, it may bend as a result of the treatment, but as shown in FIG. 5, there is a great effect that the fiber sheet does not bend due to water treatment. Moreover, it has the characteristic that it is more difficult.

FIG. 6 is an example of another device according to the present invention. The conveyor belt 17 consists of two parts: nozzle parts 18 and 19 having a large number of hole arrangements. 1
The angle made by 9 was taken on the right side for 18, but for 19 it was taken on the left. By dividing the water into two parts in this way, the water treatment effect can be made uniform.

FIG. 7 shows another example according to the present invention. 20 is a conveyor belt, and 21 is a porous nozzle portion having an angle α with respect to the reference. The arrow 22 indicates the direction of the swing. 23 is a vibration generator. In this way, in the present invention, in addition to increasing the range covered by the impact of the jet water by giving the angle α,
Furthermore, it can be further enhanced by the swing mechanism.

FIG. 8 shows the hole and its rocking locus during rocking of the device according to the present invention. 24,2
Reference numerals 4', 24'' and 24 respectively indicate nozzle holes, and 25, 25', 25'' and 25 respectively indicate examples of impact trajectories of the jetted water when oscillating.
In this way, the conspicuousness of vertical streaks due to rocking can be greatly reduced.

FIG. 9 shows another example according to the invention.
26 is a conveyor belt, and 27 is a porous nozzle portion. 28 indicates the direction of the swing. 29,2
9' is a vibration generator. What should be noted here is that
This shows that it does not swing in the same direction as the hole arrangement direction. The essence is different from the case in Figure 7.

FIG. 10 shows another example according to the invention. Reference numeral 30 indicates a conveyor belt, and reference numerals 31 and 32 indicate nozzle portions having two porous arrays. 33 is a holding machine/oscillating plate that supports the nozzle. 34, 34'
is a rotating cam with an eccentric shaft. Reference numerals 35 and 35' indicate the rotation of the rotary cam, that is, the rotational oscillation of the nozzle.

31 and 32 in FIG. 10 are not limited to rotational oscillation. Needless to say, it can also be made to swing from side to side.

No matter how high the covering characteristics of the present invention are, unless the pores are provided with a certain degree of pore density, the purpose of the present invention cannot be fully achieved. Particularly preferred is 10 mm or less. The lower limit depends on the size of the hole, but is preferably 0.1 mm or more.
Further, the angle α at which the nozzle is tilted is 25 degrees or more, particularly preferably 45 degrees or more. However, if the angle is tilted too much, the equipment will become too large and the capital investment will be excessive, so it is preferable that the angle is 80 degrees or less. Particularly preferred is 70 degrees or less. The degree of coverage desired can be easily determined by calculating α from the hole arrangement, spacing, and hole diameter. Especially when you want to cover more eyes, α should be increased. When rocking, it is preferably 10 mm or less.
Preferably it is 5 mm or less. Other detailed changes can be made by those skilled in the art based on known examples and techniques in the art.

[Effects of the Invention] (1) A water jet punch with extremely high covering properties is possible.

(2) High covering properties enable treatment with reduced water impact marks.

(3) If the holes are made too dense, even if the water flow bends slightly, they will interfere with each other and cause noticeable impact marks, which can be avoided.

(4) Higher covering characteristics can be achieved by combining with rocking.

(5) It was discovered that there is a swinging direction other than the direction in which the holes are arranged, which has never been seen before, making it possible to achieve a large impact area.

(6) It is possible to achieve high coverage water impact treatment as well as water impact treatment that causes less wrinkles.

(7) Discrepancies in the hole trajectory in multi-stage nozzle processing can be avoided.

(8) It is possible to avoid bending of the fiber sheet during processing.

(9) We succeeded in reducing the reduction in impact efficiency due to water accumulation on the fiber sheet at the water impact mark.

(10) We succeeded in avoiding the trouble of drilling holes that are too dense.

[Brief explanation of drawings]

FIG. 1 shows an embodiment of the device according to the invention. FIG. 2 shows the diagonal arrangement of holes and the trajectory of water jet impact according to the present invention. FIG. 3 shows an example of a conventional water treatment device. FIG. 4 shows the arrangement of the holes and the resulting water jet impact trajectory and large unimpacted intervals in a conventional device. 5 and 6 show another embodiment of the device according to the invention. FIG. 7 shows an example of another embodiment of the device according to the present invention in which the swinging direction is different. FIG. 8 shows the oblique arrangement of the nozzle holes of the device according to the present invention and the water flow impact locus during rocking. 9 and 10 show still another embodiment of the device according to the invention. 1, 14, 17, 20, 26, 30: Porous conveyor belt, 2, 15, 16, 21, 27, 31, 3
2: nozzle part, 3: bar, 4, 4': support part,
5, 23, 29, 29': Oscillation generator, 6: Perpendicular direction to the porous conveyor belt, 7, 7', 7'',
7: Injection hole, 8, 8', 8'', 8: Water flow trajectory,
22, 28: Swing direction, 33: Holder and swing plate,
34, 34': Rotating cam with eccentric shaft.

Claims (1)

[Claims] 1. In an apparatus that processes a sheet by jetting a fluid, a row of jet holes is not arranged in a direction perpendicular to the moving direction of a perforated belt that conveys the sheet, but a row of jet holes is not arranged in a direction perpendicular to the moving direction of a perforated belt that conveys the sheet. 1. An impact water flow treatment device, characterized in that an injection hole array portion is arranged, the angle α being 25 degrees or more and 80 degrees or less, and the hole spacing being at least 10 mm or less. 2. The percussion water flow treatment device according to claim 1, which has a mechanism for swinging the injection holes. 3. The percussion water flow treatment device according to claim 1 or 2, which has a mechanism in which the injection holes swing in the direction in which the injection holes are arranged. 4. The percussion water flow treatment device according to claim 1 or 2, which has a mechanism in which the injection holes swing in a direction different from the direction in which the injection holes are arranged. 5. A device in which the injection hole arrangement is bent in the middle to form two hole arrangement parts, or a device having two hole arrangement parts, and either of these parts is connected to the movement of the perforated belt that conveys the sheet. It has an angle α with respect to a reference perpendicular to the direction,
The percussion water flow treatment device according to claim 1, wherein the angle α is 25 degrees or more and 80 degrees or less.