JPS6347838B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a dryer canvas for paper manufacturing, and more specifically, to facilitate the operation of hanging a dryer canvas in the drying section of a paper machine. The invention relates to a dryer canvas equipped with a guiding cloth for use in dryer canvases.

(Prior art) As a dryer canvas for papermaking, metal hooks are planted along the entire width of both ends in the length direction,
You can extend the warp threads of the canvas body and fold it back.
In addition, by sewing the joint base fabric, a large number of joining loops are provided to protrude in the length direction, and one joining loop and the other joining loop are butted in an interlocking manner to join them. It is known that a core wire for joining is inserted through the dryer loop, thereby joining the dryer canvases in an endless manner.

In addition, in order to facilitate the work when installing the above-mentioned dryer canvas into a paper machine in which a large number of cylinders are arranged, one end of the above-mentioned dryer canvas is attached as described in Japanese Utility Model Publication No. 57-55356, etc. It is known to install a suitable induction cloth. That is, a large number of string holes are drilled along one end of the thick fabric, which has a width similar to that of the dryer canvas described above and a length of several tens of centimeters, and a string is inserted near the other end from only the threads in the longitudinal direction. Form a blind-shaped part with a length of 6 to 10 mm across the entire width to use as a guide cloth, insert one joining loop of a new dryer canvas into the gap between the blind-shaped parts, and insert a protective core wire into the protruding end. and then join the two together, insert a joining string into the string passing hole at one end of the guide cloth, and attach it to the end of the rope that has already been wrapped around a number of cylinders of the paper machine, or Connect the guiding cloth to the end of the old canvas with the string, wrap the new canvas around the cylinder by pulling the rope or the old canvas, and then remove the guiding cloth from the new canvas. the joining loops at both ends, and insert the joining core wire into these joining loops.

(Problem to be Solved by the Invention) In order to join both ends of a dryer canvas wrapped around a large number of cylinders, it is necessary to pull both ends of the above-mentioned papermaking canvas and connect one joining loop to the other. Since the joining core wires had to be inserted into these joining loops while being accurately engaged with the joining loops one by one, a great deal of labor and time was required for this joining work. Particularly when the connecting loop of the dryer canvas is small and the width of the dryer canvas is wide, reaching several meters or more, the weight of the dryer canvas is large, and this weight acts to pull the ends of the dryer canvas apart. However, the work area for engaging the joining loops had poor footing and inadequate lighting, making the above work extremely difficult. In addition, the work of inserting the joining loop of the dryer canvas into the blind-shaped portion of the conventional guide cloth and inserting the core wire through the protruding end of the loop is quite troublesome and requires a long time. Furthermore, when removing the guide cloth after introducing a new canvas into the above-mentioned cylinder, there was also the problem that the core wire dug into the blind portion and was difficult to remove.

(Means for solving the problem) A large number of joining loops are protruded in the length direction along the entire width of both lengthwise ends of the dryer canvas, and one joining loop and the other joining loop In a dryer canvas for paper manufacturing, in which the core wires for joining are inserted through the joining loops by interlocking butts, a set of slide fasteners is provided over the entire width of the upper surface of one end and the other end of the dryer canvas. one tape and the other tape are removably attached so that their interlocking elements are located above or near the joining loop, and the one tape has approximately the same width as the dryer canvas; The other end of the guide cloth, which has a number of string holes perforated at one end, is removably joined to the other end using the same tape as the other tape sewn to the other end.

(Function) When winding a large number of cylinders, pass the string through the string hole of the guide cloth as in the past, and attach the above guide cloth to the end of the old dryer canvas that has already been wrapped around the paper machine. The above strings are connected, and then the paper machine is gradually driven to pull the old dryer canvas, and the new dryer canvas is wrapped around the multiple cylinders via the guide cloth. After one end of the new dryer canvas has returned to its original position, remove the guide fabric from one end of the new dryer canvas by opening the slide fastener connecting this end to the guide fabric, then remove the guide fabric from one end of the new dryer canvas. Pull and hold the slide fastener tape at the other end and the slide fastener tape at the other end, engage and connect their joints, and then gradually open the closed slide fastener and open it. While correctly engaging the lower joining loops with the other joining loop, insert the joining core wire into these joining loops, and after the entire width has been inserted, insert the tape at one end and the tape at the other end. Remove each from the dryer canvas.

(Example) In FIGS. 1 and 2, 1 is a dryer canvas, and a large number of joining loops 2 and 3 made of warp threads are protruded from one end 1a and the other end 1b, respectively. One tape 4 and the other tape 5 of the slide fastener are attached to the one end 1a and the other end 1b, respectively, by the stitches 6 of a chain stitch sewing machine, and the one tape 4 is
A guide cloth 8 is joined via the same tape 7 as the other tape 5, and an eyelet 9 (see FIG. 2) is attached to a string hole 8a formed at the other end of the guide cloth 8. In addition, 4a, 5a, and 7a are the joints fixed to the tapes 4, 5, and 7, respectively, and the slider 10 (refer FIG. 5) is attached to the tape 4.

In the above structure, as shown in FIG.
a, and insert the string 12 through the string passing hole 11a and the string passing hole 8a (eyelet 9) of the guiding cloth 8 to connect the new dryer canvas 1 to the old dryer canvas 11 via the guiding cloth 8. , the dryer canvas 1 is wound around a cylinder (not shown) by driving the machine, and then the string 1 is wound around the cylinder (not shown).
2 to separate the guide cloth 8 from the old dryer canvas 11, and further open the slide fastener tapes 4 and 7 that join the guide cloth 8 and one end of the dryer canvas 1 by sliding the slider 10.
As a result, the guide cloth 8 is removed from the dryer canvas 1 (see FIG. 4), and then one tape 4 and the other tape 5, that is, both ends of the dryer canvas 1 are pulled together, and the interlocking members 4a, 5 of both are pulled together.
a are engaged by sliding of the slider 10 to temporarily join the dryer canvas 1 into an endless shape. Next, as shown in FIG. 5, the slider 10 is slid little by little to open the interlockers 4a, 5a, and the joining core wire 13 is inserted while accurately engaging the loops 2 and 3 on one side, and After the entire width has been inserted, the fastener tapes 4 and 5 are removed from the dryer canvas 1.

In the above embodiment, since the slide fastener tapes 4, 5, and 7 are attached by chain stitches 6, they can be easily removed.

Next, to explain an experimental example, joining loops 2 and 3 are formed with warp threads at both ends of a dryer canvas 1 with a width of 6.25 m, and slide fastener tapes 4 and 5 are sewn to both ends using a sewing machine. A guide cloth 8 with a width of 6.25 m and a length of 40 cm is connected to one end with tapes 4 and 7, and a string threading hole 8a is made in the guide cloth 8 for 30 minutes.
Holes were drilled at cm intervals and eyelets 9 were attached. This guiding cloth 8 was connected to an old dryer canvas 11 on the paper machine with a string 12 and passed through the paper machine, then the guiding cloth 8 was removed and both ends of the dryer canvas 1 were joined. It took four workers 15 minutes to complete the joining. On the other hand, when a conventional guide cloth without a slide fastener attached was used, it took eight workers and one hour.

(Effect of the invention) Since the guide cloth is connected to one end of the dryer canvas with a slide fastener, by connecting this guide cloth to the old dryer canvas, the dryer canvas can be wound around the cylinder of the paper machine without damaging it. The guide fabric can be hung and removed very easily when the wrapping is finished. Then, manually pull both ends of the dryer canvas that has been wrapped as described above, and temporarily join them into an endless shape in the same manner as closing a slide fastener.
Since the joining loops can then be engaged while opening little by little, it is possible to join both ends of the dryer canvas more accurately and easily than in the past, and in a short time with fewer people.

[Brief explanation of drawings]

Fig. 1 is a plan view of an embodiment of the invention, Fig. 2 is a sectional view taken along the line - - in Fig. 1, Fig. 3 is a sectional view of the joint with an old papermaking canvas, and Fig. 4 shows both ends of the canvas. FIG. 5 is a cross-sectional view of the drawn state, and a partial plan view for explaining the joining operation. 1: dryer canvas, 1a: other end, 1b:
Other end, 2, 3: joining loop, 4, 5, 7: slide fastener tape, 4a, 5a, 7a: interlock, 6: seam, 8: guide cloth, 8a: string hole,
10: Slide fastener slider, 11: Old dryer canvas.

Claims (1)

[Claims] 1 A large number of joining loops are protruded in the length direction along the entire width of both ends of the dryer canvas, and these joining loops are butted against each other in an interlocking manner. In a dryer canvas for paper manufacturing in which a core wire for joining is inserted through a joining loop, one tape and the other tape of a pair of slide fasteners are attached to the entire width of the upper surface of one end and the other end of the dryer canvas, respectively. The tape is removably attached so that the joint is located above or near the joining loop, and one of the tapes has a width approximately the same as that of the dryer canvas, and a number of string passing holes are provided on one end of the tape. 1. A dryer canvas for paper manufacturing, characterized in that the other end of the guide cloth having a perforation thereon is removably joined to the other end of the guide cloth through the same tape as the other tape sewn to the other end.