JP3864019B2 - Induction tool for paper canvas for papermaking - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a guide used when a dryer canvas is put on or removed from a dry part of a paper machine.
[0002]
[Prior art]
There are two types of replacement of the dryer canvas used in the dry part of the paper machine, in general, when it is removed due to its life, and when it is removed for cleaning the canvas or reworking the joint. In the former case, the dryer canvas (hereinafter referred to as the old dryer canvas) to be removed on the paper machine is cut off at the periphery of the joint, holes are formed at intervals in the width direction, and the dryer to be newly inserted into the holes. The canvas is replaced while the dryer is operated slowly by connecting the old and new canvas through a string of induction cloth attached to the canvas (hereinafter referred to as the new dryer canvas). On the other hand, when the latter canvas is reused, since it is not allowed to make a hole in the canvas, as a method of connecting the old dryer canvas and the new dryer canvas, for example, as described in Japanese Utility Model Publication No. 1-129299, A guidance tool that is provided with eyelet holes at a part of the end of the band-shaped fabric piece and is connected in parallel with a leader cloth and a string, or has a needle portion on the inner surface as described in JP-A-61-172200 and sandwiches the canvas end. A guiding tool connected in parallel with a T-shaped clip to be pressed and a string is disclosed. The new and old dryer canvases are connected using such a guide cloth and guide tool, and the dryer is replaced while slowly operating.
[0003]
[Problems to be solved by the invention]
However, since all of the guiding tools disclosed in the above-described conventional devices use a plurality of strings for connection, the number of strings to be used tends to increase with the recent widening of paper machines. . The width of the current paper making dryer canvas is about 2 to 10 m, and for example, about 20 connecting strings for a canvas width of about 8 m need to be connected to a large number of strings. In addition, the old dryer canvas is often bent and deformed especially in the center due to its long-time use in the dry part.As a result, the joint part is also greatly bent, so when adjusting the connection position of the old and new dryer canvas, There are difficulties in positioning (length adjustment) of the knot of the string depending on the position where the string is attached. When tying each of the plurality of strings, it takes work while positioning the new canvas, which requires considerable skill and effort. Depending on how the knot is connected, troubles such as canvas deformation and wrinkles may occur when the new dryer canvas is inserted due to the slight difference in length between the strings, and the joints at the end of the new dryer canvas are parallel to each other even after insertion. The problem of not meshing with each other occurred, and there was an inconvenience that it took time to correct the position of the new dryer canvas. Moreover, the wire diameter of the string usually used is about 3 mm, and the knot of the string is about 15 mm. Depending on the knot, the knot may be further increased, and the string is inserted in a narrow gap between the rolls of the paper machine dry part. There were inconveniences such as obstacles. In addition, in the case of a needle canvas that has a needle portion on the inner surface and directly clamps the canvas end, for example, in the case of a needle canvas that places importance on surface smoothness, the surface of the guide may be damaged.
[0004]
The present invention eliminates the problems of these conventional guides, and provides a guide for replacing old and new dryer canvases that can easily and accurately replace the canvas without damaging the dryer canvas to be replaced. It is.
[0005]
[Means for Solving the Problems]
A paper machine dry canvas guide used when replacing the old and new dryer canvas in the paper machine dry part, the guide tool being joined to the end of the new dryer canvas to be newly inserted, The guide cloth B joined to the end of the old dryer canvas to be removed, and one of the guide cloth A and the guide cloth B is composed of a single base cloth , A sheet-like guide cloth provided with a bonding material having detachable ability, wherein the other guide cloth is composed of two base cloths, and an alligator-like shape having a bonding material having detachable ability on the inner surface thereof A dryer cloth for papermaking, characterized in that the outer surface of the sheet-like guide cloth is sandwiched between the joint materials on the inner surface of the alligator-shaped guide cloth. Is an induction tool The guide cloth A is composed of a wide sheet-shaped guide cloth, the guide cloth B is composed of a plurality of small alligator-shaped guide cloth groups having different lengths, and each of the alligator-shaped guide cloths is different. The above-mentioned problem is solved by using a guide for a paper canvas dryer characterized in that the sheet-like guide cloth and the sheet-like guide cloth are joined at a joining angle.
[0006]
The guide cloth A and the guide cloth B are each provided at one end with a loop or hook that can be engaged with a joining loop or hook at the end of the old or new dryer canvas to be joined, and on the other end side, the guide cloth A and the guide cloth B are provided. It is preferable that the B and the B are bonded to each other through a surface fastener material provided on the surface. The bonding material having detachable ability is not particularly limited as long as it is a thin material excellent in bonding strength, but a surface fastener material is preferable.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described in detail below based on examples. In addition, this invention is not limited to a present Example.
[0008]
FIG. 1 shows a plan view of a guide (5) according to the present invention. FIG. 2 is a cross-sectional view taken along the line CC in FIG. The guide cloth A (1) and the guide cloth B (2) are respectively composed of a base cloth (3) and a surface fastener material (4) and integrated. (The base fabric here is not particularly limited, but preferably has a high tensile strength and rigidity. Usually, it is preferable to use a thin plastic fabric similar to the canvas body.) One end of each induction fabric Has a joint structure similar to the joint portion (12) at the end of the new dryer canvas (10) and the old dryer canvas (11), and each is joined to the canvas. The guide cloth A is composed of a single sheet of base cloth, and is composed of a wide sheet-like guide cloth (1a) with a surface fastener material attached to the outer surface (upper and lower surfaces) of the guide cloth A. It is joined. The term “wide” as used herein refers to a size equivalent to the width of the canvas. However, depending on the width of the paper machine, the width may be divided to about 1/2 or 1/3 of the canvas width.
[0009]
The guide cloth B (2) is composed of two base cloths, and has one end laminated and sewn, and the other end is open like an alligator opening, It consists of a group of narrow alligator-shaped guide cloths (2b) with the face fastener material (4) attached to the back side of the base cloth, and this narrow alligator-shaped guide cloth (2b) is the width direction of the old dryer canvas (11) A plurality of them are arranged in the same manner, and similarly joined to the joint portion of the old dryer canvas (11). The small width here is a width dimension of about 20 to 30 cm, and is not particularly limited. However, since the end portion of the old dryer canvas to be joined is curved, the joint portions are joined to each other when the width is wide. However, it is only necessary to have a width that is within a range in which the joint portions can be easily joined by making the width small. Moreover, since the joint part of the old dryer canvas (11) is curved as described above, it is preferable to arrange the alligator-shaped guide cloth (2b) having different lengths according to the curved state. (Normally, alligator-shaped guide cloths with different lengths of about 20 cm from 20 to 100 cm are prepared depending on the degree of curvature, and the appropriate length of the alligator-shaped guide cloth is selected according to the curved state of the canvas. In addition, in the present invention, since the alligator-shaped guide cloths are joined in a state along the curved surface, the plurality of alligator-guide cloths are not arranged in parallel to the longitudinal direction of the canvas, This forms a sandwiched state having different joining angles.
[0010]
The surface fastener material to be attached is not particularly limited as long as it is thin and flexible and has an excellent surface joining force. Of course, each surface fastener material attached to the sheet-shaped guide cloth and the alligator-shaped guide cloth is configured such that one of them is a male material and the other is a female material.
[0011]
The old dryer canvas (11) is curved inward at the center as shown in FIG. 1, and the narrow alligator-shaped guide cloth (2b) group is joined to the old dryer canvas (11) along the curve line. Has been. A plurality of these alligator-shaped guide cloths (2b) are arranged and joined in the width direction of the old dryer canvas (11), and each is sandwiched between the sheet-like guide cloth (1a) and the surface fastener material. . In the case of the above-described conventional guide tool, since a plurality of strings for connection are used, skill and labor for tying and re-binding such as string length adjustment and knot size are required. In this case, since the surface fastener material is used, it is detachable with a single touch, and the adjustment of the joining position becomes extremely easy. Naturally, a large protrusion like a knot of a string is not formed. More important is the difference in degrees of freedom between the old and new dryer canvas connected by a guide. When a string is used, it moves freely with respect to the vertical and horizontal directions of the canvas, so that the lateral rigidity of the guide portion is inferior. As a result, it was necessary to assist the new dryer canvas to be inserted so as not to be laterally displaced. However, in the guide according to the present invention, a wide guide cloth and a plurality of narrow guide cloth groups are directly bonded to each other. As a result, the degree of freedom in the lateral direction is reduced, and as a result, it is not necessary to assist the new dryer canvas at the time of laying, and the guiding tool can be easily laid in terms of labor. Still further, in the present invention, since a plurality of narrow guide cloths are joined along the curved surface of the old dryer canvas, the respective narrow guide cloths are not positioned in parallel and have different joining angles. One induction cloth and a sandwiched surface are joined. Because of this different joining angle, the degree of freedom between the old and new dryer canvas is further constrained, and it becomes a guiding device with excellent lateral rigidity, so that it can be easily hung without causing deformation or wrinkling of the new dryer canvas. The insertion work can be performed, and the joint work of the joints between the ends of the new dryer canvas after the guidance can be facilitated.
[0012]
Since the alligator-shaped guide cloth (2b) is joined between the sheet-like guide cloth (1a) and the sandwiched face (two-sided), it exhibits a bonded state excellent in tensile strength unlike simple one-side surface joining. In this way, a state in which one guide cloth is surface-bonded in such a manner that the other guide cloth is sandwiched from above and below is expressed as sandwich-surface bonding.
[0013]
In the above embodiment, an example in which the guide cloth B is a plurality of alligator-shaped guide cloths has been described. However, for example, the guide cloth A is composed of two base cloths, and the same alligator-shaped guide cloth is used. The cloth B may be a plurality of sheet-shaped guide cloths.
[0014]
【Example】
(Example 1) A commercially available velcro tape having a thickness of about 2 mm on the outer surface (both sides of the base fabric) of a plastic fabric base fabric (3) having a width equivalent to the canvas width dimension and a length of about 20 cm and a thickness of about 2 mm. A guide cloth A (1) comprising a sheet-like guide cloth (1a) having a similar joint (12) structure formed at the joint with the new dryer canvas (10) is prepared by sewing a surface fastener male material. Two similar base fabrics (3) with a width of about 30 cm are stacked, one side is laminated and joined, and the same commercially available Velcro female fastener is sewn on the inner surface of the other side. At the joint with (11), a similar joint (12) structure is formed, and the lengths are different (here, about 40 cm in length, about 60 cm in two, about 80 cm in one) alligator 5 sheets of guide cloth (2b) are prepared, and the old dryer canvas At intervals in the width direction of 11), joined at the respective along the curved state joint portion, was prepared induced fabric B (2). The alligator-shaped guide cloths (2b) prepared on the prepared guide cloth A (1) are joined to each other at different joining angles as shown in FIG. An induction tool (5) for a paper-making dryer canvas according to the present invention, comprising an induction cloth A and an induction cloth B having a thin joining form of about 10 mm, was obtained.
[0015]
Using the obtained guidance tool, the paper machine dry part was used to insert and remove the old and new dryer canvas, so that the new dryer canvas was not damaged, deformed or wrinkled easily and accurately. Could be implemented. When adjusting the position of the old and new dryer canvas, the position of the five alligator-shaped induction cloths can be easily adjusted while attaching and detaching with one touch, reducing work time and much time and effort. The new dryer canvas could be accurately guided to the paper machine dry part. In addition, the joints between the ends of the new dryer canvas after the induction can be carried out without any trouble.
[0016]
【The invention's effect】
By using the guide device of the present invention, when replacing old and new dryer canvases, the dryer canvas can be easily replaced without causing damage, deformation or wrinkling, and without causing troubles even between narrow rolls. Can be implemented. In addition, when adjusting the position of the new dryer canvas, it can be easily detached by one-touch operation. Furthermore, the degree of freedom between the old and new dryer canvas is constrained to provide a guide device with high lateral rigidity, and the joint joining work between the ends of the new dryer canvas after the guide becomes easy.
[Brief description of the drawings]
FIG. 1 is a plan view showing an embodiment of a guide according to the present invention.
FIG. 2 is a cross-sectional view taken along the line C-C showing an embodiment of a guide according to the present invention.
[Explanation of symbols]
1 Induction cloth A
1a Sheet-shaped induction cloth 2 Induction cloth B
2b Alligator-shaped guide cloth 3 Base cloth 4 Surface fastener material 5 Guide tool 6 Joining angle 7 Clamping face joint 10 New dryer canvas 11 Old dryer canvas 12 Joint part

Claims (2)

A paper machine dry canvas guide used when replacing the old and new dryer canvas in the paper machine dry part, the guide tool being joined to the end of the new dryer canvas to be newly inserted, The guide cloth B joined to the end of the old dryer canvas to be removed, and one of the guide cloth A and the guide cloth B is composed of a single base cloth , A sheet-like guide cloth provided with a bonding material having detachable ability, wherein the other guide cloth is composed of two base cloths, and an alligator-like shape having a bonding material having detachable ability on the inner surface thereof A dryer cloth for papermaking, characterized in that the outer surface of the sheet-like guide cloth is sandwiched between the joint materials on the inner surface of the alligator-shaped guide cloth. Induction tool.   The guide cloth A is composed of a wide sheet-shaped guide cloth, the guide cloth B is composed of a plurality of small alligator-shaped guide cloth groups having different lengths, and each of the alligator-shaped guide cloths is different. The guide for a dryer canvas for papermaking according to claim 1, wherein the sheet-like guide cloth and the sheet-like guide cloth are joined at a joining angle.

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