JP4388196B2 - Mounting structure for lead cover for papermaking felt - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lead cover mounting structure interposed between a traction means for drawing a felt into a predetermined traveling path in a paper machine and an end of the felt.
[0002]
[Prior art]
A so-called seam felt is known in which the felt travel path, so-called felt run, is pulled into the felt travel path, and both ends are joined to each other to make them endless in order to improve workability on the paper machine. Yes. In joining both ends, the joining loops formed by folding back the warp yarn constituting the base fabric are alternately meshed so that the respective center holes are aligned, and the core wire is passed through the common hole formed thereby. Is done.
[0003]
In the felt pull-in operation, when the felt before replacement (hereinafter referred to as the front sheet) remains in the paper machine, as shown in FIG. 4, the main part of the front sheet 41 is cut in the width direction. The end of a new felt 42 is connected to one end of the belt 42, and the contact 42 is defined by a number of rolls 43 in the paper machine while the front 41 is pulled out from the other end. Pull in the travel route. On the other hand, when the front fabric is not in the paper machine, a plurality of ropes are passed through the travel path, the ropes are connected to the end of the web, and the rope is pulled into the paper machine.
[0004]
When connecting the pulling means such as forehead or rope and the counterweight, it is necessary to adopt a connection method that provides a connection strength that does not come off during drawing into the paper machine and that does not damage the counterweight. is there. Also, at the end of the felt, a temporary joining tool is provided for facilitating the work of temporarily fastening both ends of the felt and passing the core wire through the joining loop, and this temporary joining tool does not damage the roll of the paper machine. In addition, it is necessary to avoid interruption of work due to catching. Therefore, conventionally, a lead cover made of sheet material covering the end of the felt is interposed between the traction means and the lead cover and the felt are sewn together with a relatively soft thread that does not damage the felt. I was trying to do it.
[0005]
[Problems to be solved by the invention]
In this case, in order to remove the lead cover from the felt, it is necessary to pull out the thread for sewing the lead cover and the felt, and chain stitching is adopted so that the thread can be pulled out easily. There was a case that the thread breaks on the way and it takes time to work. This thread breakage can also be solved by adopting a high-strength thread, but it is not always possible to select a thread that is advantageous in terms of strength due to the constraint that stitching does not cause felt damage. The only way to prevent thread breakage is to carefully remove the yarn, which has been an obstacle to increasing the efficiency of the felt hanging operation.
[0006]
The present invention has been devised in order to solve such problems of the prior art, and its main purpose is to provide a structure for attaching a lead cover for hanging papermaking felt and to quickly remove the felt from the felt. It is to be configured to be able to do.
[0007]
[Means for Solving the Problems]
In order to achieve such an object, in the present invention, the tip connecting portion connected to the traction means for drawing the felt into a predetermined traveling path in the paper machine and the joining loop formed at the end of the felt are protected. Therefore, the lead cover and felt are removed from the felt by attaching the lead cover, which consists of a cover that covers the machine side surface and the wet paper side surface of the felt. The connecting members are connected to each other via a possible connecting tool. The connecting tool includes a felt-side connecting member sewn on the felt and a lead cover-side connecting member sewn on the cover portion of the lead cover. By aligning the center holes of the loops provided side by side in the width direction and inserting a wire through the common hole, the loops are connected to each other. They are separated in made it possible to remove the lead cover from the felt.
[0008]
According to this, after the drawing work to the paper machine is completed, the lead cover can be removed from the felt by simply pulling the wire out of the loop, the lead cover removal work is simplified, and the next work can be started quickly. Can do. In particular, it can reduce the time from unpacking to the joining process at both ends of the felt, avoiding the inconvenience that the joining loop made of nylon is softened due to moisture and the meshing work of the loop becomes troublesome. Can do. In this case, it is desirable to provide the loop row in the width direction so as to cover substantially the entire width of the felt so that the traction force acting on the felt is not concentrated on a part.
[0009]
In addition, when sewing the felt and the connecting tool with a sewing machine, a sewing machine having a size corresponding to the length from the stitched portion of the felt and the connecting tool to the tip edge of the felt may be used, and the lead cover is attached to the felt. Eliminates the inconvenience of preparing a sewing machine with a large size that fits the length from the stitched part to the lead edge of the lead cover, as in the case of direct sewing, and complicating the manufacturing equipment and increasing the manufacturing cost. Can do.
[0010]
In this case, the connecting member on the felt side is finally removed from the felt, but this may be appropriately performed between operations in a subsequent process, for example, a joining process in which the core wire is passed through the joining loops at both ends of the felt. At this time, if the felt side coupling member and the felt are sewn together by chain stitching, the detaching operation becomes easy.
[0011]
In particular, the loop is preferably arranged in parallel with the side edge of the tape-like member that can overlap the felt and the cover of the lead cover when the felt is drawn into the paper machine. Therefore, the felt pull-in operation can be performed smoothly. The loop on the lead cover side may have a corresponding configuration by providing a tape-like member similar to the felt side, but unlike the felt side, it is not necessary to remove the connecting member from the lead cover after the drawing operation is completed. It is not always necessary to have the same configuration.
[0012]
In addition, the tape-shaped member constituting the felt-side connecting member may be configured to be sewn to the felt via an attachment sheet. According to this, it is possible to sew the coupling tool to the felt regardless of the configuration of the tape-like member by adopting a material with a small load when stitching, in particular, a load when inserting the sewing needle, into the mounting sheet. And it is possible to avoid felt damage during suturing.
[0013]
In the tape-like member, the wire can be easily inserted into the loop by increasing the diameter of the loop or by adopting a highly rigid thread forming the loop. In the configuration in which the load of the sewing needle at the time of sewing is increased due to an increase in the thickness of the shaped member and the felt is directly stitched with the felt having a large cloth thickness, the stitching operation becomes troublesome and the felt is damaged. On the other hand, if it is set as the structure which sews a mounting sheet to a felt as mentioned above, the said inconvenience can be avoided. The tape-shaped member and the attachment sheet may be connected by an appropriate method, and even when stitching is performed, the work is easier compared to direct stitching between the tape-shaped member and the felt.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the configuration of the present invention will be described in detail with reference to the accompanying drawings.
[0015]
FIG. 1 shows a lead cover to which the present invention is applied. The lead cover 1 is interposed between a pulling means such as a rope passing through the paper machine or a travel path and the end of the felt 2 to guide the felt 2 to the travel path in the paper machine. A leading end connecting portion 4 connected to the traction means via a connecting string 3, a machine side surface (upper surface in the figure) 2a and a wet paper side surface (the upper surface in the figure) where the rolls of the paper machine in the felt 2 and the like come into contact. The cover 5 and 6 covers the lower surface 2b in the figure.
[0016]
A cylindrical portion 9 is formed outside the hole 8 through which the connecting string 3 is passed through the distal end connecting portion 4, and a rod 10 having a required rigidity is inserted into the cylindrical portion 9, and leads through the connecting string 3. The traction force acting on the cover 1 is uniformly distributed in the width direction.
[0017]
The cover parts 5 and 6 protect the joining loop 12 formed at the end of the felt 2 and prevent the temporary joining tool 13 provided on the felt 2 from being damaged, and by contact with the temporary joining tool 13. It serves to protect parts such as rolls on the paper machine side from damage. The temporary joining tool 13 temporarily fixes both ends of the felt 2 to facilitate the joining work. Here, the configuration is such that a slide fastener type fastener tape 14 is sewn to the felt 2 via a connecting cloth 15. It has become.
[0018]
The felt 2 is further covered with a water shielding sheet 17 on the outside of the cover portions 5 and 6, so that when the felt 2 is drawn into the paper machine, the felt 2 gets wet with moisture remaining inside the felt 2, and subsequent work is performed. Can avoid inconvenience. The water shielding sheet 17 is set to an appropriate length longer than the covering parts 5 and 6 so as to obtain a required water shielding effect in accordance with the structure of the paper machine and the dimensions of the felt 2.
[0019]
Here, the machine-side cover 5 and the tip connecting portion 4 are formed of a single sheet material, and the sheet material forming the wet paper-side covering 6 is arranged in the width direction on the tip connecting portion 4 side. Although integrated by sewing together, various modes are possible, such as a configuration in which one sheet material is folded in two at the tip connecting portion 4. Further, the cover portions 5 and 6 are formed into a bag shape by stitching the left and right side edges thereof together. Similarly, in the water-impervious sheet 17, the front material 18 and the back material 19 constituting the water-impervious sheet 17 are sewn along the width direction on the tip connecting portion 4 side, and the left and right side edges are sewn together to form a bag. It has become.
[0020]
The lead cover 1 and the felt 2 are connected to each other via a detachable connector 21 with respect to the felt 2. The connector 21 includes a connecting member 22 on the felt 2 side as shown in FIG. The connecting member 23 on the lead cover 1 side is connected to each other by aligning the center holes of the loops 24 and 25 arranged in parallel in the width direction and inserting the wire 26 into the common hole. The lead cover 1 can be removed from the felt 2 by being separated from each other by extracting the wire 26. Here, the coupling tool 21 is provided on the machine side surface (upper surface in the drawing) 2a of the felt 2 together with the temporary joining tool 13, so that the sewing operation for the felt 2 can be performed efficiently.
[0021]
The loops 24 and 25 on the felt 2 side and the lead cover 1 side are juxtaposed on the side edges of the tape-like members 28 and 29 that can overlap the felt 2 and the cover 5 of the lead cover 1, respectively. Here, both the tape-like members 28 and 29 on the felt 2 side and the lead cover 1 side have the same configuration. A tape-like member 28 constituting the connecting member 22 on the felt 2 side is sewn to the felt 2 via an attachment sheet 30. The tape-like member 29 constituting the connecting member 23 on the lead cover 1 side is directly sewn on the cover portion 5 of the lead cover 1. In addition, each member which comprises the said coupling tool 21 is extended over the substantially full width of the felt 2. As shown in FIG.
[0022]
When the felt 2 is pulled into the paper machine, the tape-like members 28 and 29 and the attachment sheet 30 are overlapped with the felt 2 and the cover 5 of the lead cover 1 and are smoothly drawn into the paper machine.
[0023]
The attachment sheet 30 is made of a material having a small load when stitched, in particular, a load when the sewing needle is pierced, and is sewn in a state where it overlaps with a predetermined width on one surface of the tape-like member 28. The attachment sheet 30 and the felt 2 are sewn by chain stitching, and the attachment sheet 30 can be removed from the felt 2 by pulling out the suture thread 27. It is also possible to adopt a mode in which the attachment sheet is composed of two sheet members and the tape-like member 28 is sandwiched between the tape-like members. Examples of the material for the attachment sheet 30 include felt materials and thin woven fabrics made of multifilaments. In addition, the mounting sheet 30 is set to an appropriate length in consideration of workability at the time of inserting and removing the wire 26.
[0024]
For example, as shown in FIG. 3, the tape-shaped member 28 is made of a woven fabric composed of a thread (monofilament) 31 that forms a loop 24 and a thread (multifilament) 32 that is intertwined with the loop 24. The stitching portion with the cover portion 5 of the lead cover 1 is made into a single weave so as to make the stitching easy by reducing the cloth thickness. Further, a large number of loops 24 are provided at predetermined intervals in the longitudinal direction of the tape-like member 28, and high coupling strength can be obtained by alternately meshing with the counterpart loop, and at the same time, the wire 26 can be inserted. It has become easier.
[0025]
Here, the loops 24 and the bent portions 33 that are folded back without forming a loop are alternately arranged, the distance between adjacent loops is set to be sufficiently larger than the diameter of the yarn 31, and meshing with the counterpart loop. Has become easier. In addition to this, the tape-like member 28 can take various forms such as a configuration in which the yarn forming the loop entangles with the yarn at the side edge portion of the woven fabric while drawing a spiral. The same applies to the tape-like member 29 on the lead cover 1 side.
[0026]
The wire 26 may be pulled out by rolling over the open edge of the water-impervious sheet 17 and the lead cover 1 on the side opposite to the tip connecting part 4. As described above, the bag-shaped water-impervious sheet 17 and the lead cover are used. If the wire 1 is long, the water shielding sheet 17 and the lead cover 1 are pre-opened with holes or marked at the opening positions so that the wire 26 can be easily pulled out. It is preferable that the wire 26 can be pulled out without twisting 17 and the lead cover 1.
[0027]
【The invention's effect】
As described above, according to the present invention, the lead cover can be removed from the felt by a simple operation such as pulling out the wire, so that it is possible to quickly move to the next operation, which is a great effect in efficiently performing the laying operation. Is obtained.
[Brief description of the drawings]
FIG. 1 is an overall perspective view of a lead cover to which the present invention is applied.
FIG. 2 is a cross-sectional view of the connector shown in FIG.
FIG. 3 is an enlarged cross-sectional view showing an example of a tape-like member that constitutes the connector shown in FIG. 1;
FIG. 4 is a conceptual diagram showing a procedure for drawing felt into a paper machine.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Lead cover 2 Felt 3 Connecting string 4 Tip connection part 5 * 6 Cover part 12 Joining loop 13 Temporary joining tool 17 Water shielding sheet 21 Connecting tool 22 * 23 Connecting member 24 * 25 Loop 26 Wire 28 * 29 Tape-like member 30 Attachment Sheet

Claims (3)

A tip connecting portion connected to a traction means for drawing the felt into a predetermined traveling path in the paper machine, a machine side surface of the felt, and a wet paper to protect a joining loop formed at the end of the felt An attachment structure for attaching to the felt a lead cover composed of a cover portion covering each of the side surfaces ,
The lead cover and the felt are connected to each other via a detachable connector, and the connector includes a felt-side connecting member sewn on the felt , and the lead cover. The connecting members on the lead cover side sewn on the cover part are connected to each other by aligning the center holes of the loops arranged in parallel in the width direction and inserting the wires into the common holes, A mounting structure characterized in that the lead cover can be removed from the felt by being separated from each other by pulling out the wire. The mounting structure according to claim 1, wherein the loop is juxtaposed on a side edge of a tape-like member that can overlap the felt and a cover portion of the lead cover when the felt is pulled into a paper machine. .     The attachment structure according to claim 2, wherein the tape-like member constituting the felt-side connecting member is sewn to the felt through an attachment sheet.

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