JP3988808B2 - Industrial textile joints - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a joint portion of an industrial fabric whose warp is made of metal.
In particular, the present invention relates to a joint portion in which an industrial fabric, which is a composite wire formed by combining a plurality of metal wires with warps, is joined endlessly to be used as a conveyor belt.
[0002]
[Prior art]
Conventionally, metal fabrics have been widely used for various conveyor belts such as drying and heat treatment of nonwoven fabrics, building material manufacturing, and PVC foam sheet support belts, taking advantage of excellent rigidity and heat resistance. Yes.
As the yarn constituting the woven fabric, a wire material such as a single wire having a circular cross section or a quadrangular shape is often used. However, when the belt is bent largely, such as when the roll diameter of the conveyor device is small, the warp yarn is used. Because belts that use single metal wires immediately cut due to bending fatigue, measures are taken to improve bending fatigue resistance by increasing the radius of curvature by using a twisted wire for the warp to increase flexibility. .
As a method for joining these woven fabrics in an endless manner, many methods are employed in which loops are formed at both ends, these loops are combined, and a core wire is inserted through the common hole to join them.
These methods can be freely formed into an endless or endless shape by pulling out the core wire for joining, so when attaching to the machine, it is stretched between the rolls of the machine in the ended state. It can be formed endless on the spot and is very easy to attach to the machine.
For example, end an old used industrial fabric attached to a machine, join one end of a new industrial fabric to one end, and move the industrial fabric between the rolls of the machine by operating the machine. When the entire fabric is covered by one round, the old industrial fabric is removed, and a new industrial fabric is formed and attached in an endless manner.
As a method of forming a loop, a loop forming yarn is used to curl into the end of an industrial fabric and form a loop. The method of mounting is adopted.
[0003]
In the case of plastic fabrics, many methods are used to form loops by folding the yarn of the fabric body. However, in the case of metal fabrics, loop formation is difficult due to its high rigidity. This method is not adopted because it takes time.
However, the above-described method of attaching the spiral body to the edge lacing or the end portion causes the loop forming thread or the spiral body to protrude on the front and back surfaces, and thus a step is generated between the joint portion and the normal portion, and the joint portion is joined. There was a problem that the part was locally worn and cut early.
In addition, since a separate thread or spiral body that is completely different from the industrial fabric is attached, the structure of the joint is completely different from the normal part, resulting in differences in smoothness and air permeability, resulting in a loop forming thread. Further, there is a problem that the spiral body is in direct contact with the conveyed product to generate a mark on the conveyed product, and in the case of industrial fabric for dehydration or drying, dehydration unevenness or drying unevenness occurs.
In addition, attaching a separate thread or spiral has a problem in that the flexibility of the joint is impaired and the bending fatigue resistance is lowered.
The present inventor has previously filed an application of the serial number PNF0011-06. This invention is an invention in which several wefts at both ends of an industrial fabric are removed to form a portion consisting only of warps, and the ends of two adjacent warps are welded to form a joining loop. Ordinary plain weave, satin weave, and the like can form a good joint according to the present invention.
[0004]
[Problems to be solved by the invention]
As a result of further research, weaving a combination of wefts and wefts with a composite wire that forms an apparent single line consisting of a plurality of metal wires, and weaving them together with a weft is a combination of a warp and a weft. Instead of weaving, it is a combination of warp and weft consisting of a composite line composed of several lines, and the warp consisting of the composite line can itself form a loop, so the structure of the joint Thus, it is possible to provide a joint portion having the same breathability without causing a step in the joint portion.
[0005]
[Means for Solving the Problems]
The present invention
“1. Combine a plurality of metal wires into an apparent single wire and use it as a warp, pass at least one of the metal wires that make up the composite wire over the weft, and at least one under the weft It is formed at the portion of the end of the industrial fabric, which is formed by weaving with the weft, through the welded composite wire at the end of the warp, which is composed of the composite wire at both ends, removing the weft at the end and removing the weft. A joint part for industrial fabric, in which a joining loop is formed by a hole, and a core wire is inserted and joined to a common hole of a joining loop formed by combining joining loops at both ends.
2. The joint part of the industrial fabric described in Item 1, wherein the metal wire of the structural unit constituting the composite wire that is apparently one wire is a wire formed of one metal element wire.
3. Joining of industrial textiles as described in 1 whose metal wire of the structural unit which comprises the composite wire made into one apparent line is a line formed by the converging line which combined the several metal strand. Department.
4). The industrial fabric according to item 1, wherein the metal wire of the structural unit constituting the composite wire that is apparently one wire is a wire formed by twisting a plurality of metal strands. Junction.
5). The joint part of the industrial fabric described in any one of 1 to 4, wherein the composite wire forming the warp is a wire formed by arranging a plurality of metal wires in the horizontal direction.
6). The joint part of the industrial fabric described in any one of items 1 to 5, wherein the ends of all warps composed of composite wires at both ends are welded to form a joining loop at the ends of all warps.
7). The joint part of the industrial fabric according to any one of items 1 to 5, wherein one or several warp tips of a warp composed of a composite wire at both ends are welded, and the tips are welded. The unwelded warp is folded back and welded to each warp and the inner weft. "
About.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
The type of woven fabric used in the present invention is not particularly limited as long as the warp is made of metal, and various metal materials such as stainless steel and bronze can be used as the warp material to form a composite warp. As the structural unit wire, a wire having various structures such as a single wire, a converging wire or a stranded wire can be used.
The weft is not limited at all, and may be a metal wire or a yarn made of polyester or polyamide synthetic resin.
For example, the net may be a combination of dissimilar materials such as a woven fabric in which a warp composed of stainless steel strands and a polyester monofilament weft are combined.
Also, the weaving structure is not particularly limited, and a plain weaving, various twill weaving, single weaving of satin weaving or multiple weaving can be used.
Further, in the present invention, the warp means a yarn that is welded to form a loop, and is not limited to a warp of a woven fabric on a loom or in use.
[0007]
The present invention welds and integrates the ends of warp yarns composed of a composite wire in which a joining loop is formed as an apparent single yarn combining a plurality of metal wires, and is the endmost member that is not close to this weld. By removing the weft, a hole from which the weft has been removed is formed at the end of the welded composite warp. Since the composite warp is integrated by welding at the tip, the hole excluding the weft is maintained as it is. This hole is used as a joining loop.
Moreover, since the metal wires of the structural unit forming the composite wire are in contact with each other, the tips of the metal wires can be easily welded.
This joining loop is formed at both ends of the industrial fabric, and the core wire is inserted into a common hole of the loop formed by combining both ends and joined endlessly.
[0008]
If it is not necessary to form a loop with all warps in a woven fabric in which warps are densely arranged, a loop is formed by welding the tips of every other or every few warps. It is possible to form a necessary number of joining loops by welding with the weft portion inside the outermost weft to be removed, or by folding back and welding to each warp or weft to secure and fix.
If it does in this way, the number of the warp of the junction part which combined the loop of both ends can be made the same as a normal part, and surface structure and air permeability can be made substantially equivalent to a normal part. Since the connecting core wire is a hole formed by removing the weft, a wire having the same or smaller diameter than the weft is used. The same material as the weft is preferable because the performance is close to that of the normal part.
In addition, it is not necessary to weld all the metal wire ends of the structural unit forming the composite wire to form a loop, but a loop is formed using a part of the metal wire, and the other metal wires are folded back. Or can be welded to the warp or weft.
[0009]
In the joint portion of the present invention, the metal wire of the structural unit forming the composite wire may be a single wire, but a converging wire or a twisted wire obtained by converging thin wires is particularly suitable.
If the warp is a converging wire or a stranded wire, the weld ball of the welded portion can be made small, and the wire diameter of the normal portion can be made substantially equal. The reason will be described below.
When the wire of the structural unit constituting the warp is a converging wire obtained by converging a plurality of thin metal wires, or a twisted twisted wire, a fine space is formed between the lines of the structural unit, When fused and integrated, the fine space disappears and the wire diameter becomes thin and the volume decreases, so that the formation of large weld balls can be prevented.
Also, if the warp to be welded is a converging wire or a twisted wire, the fabric body becomes flexible in the warp direction and the bending fatigue resistance when running endlessly becomes very good. The effect of bending fatigue can be satisfactorily exhibited.
[0010]
In the present invention, the welding method is not particularly limited, and various known welding methods can be adopted. However, the method of directly melting and welding the warp itself without using a brazing material is a welding joint. Since all the parts are the same metal and no potential difference occurs, and the welded part is not cut by electrolytic corrosion, it is preferable.
Without attaching a spiral body at the end of the conventional lacing or welding, the tip of the warp constituting the fabric that originally existed is welded, and a loop is formed using the hole excluding the weft at the end. Therefore, it is possible to make a structure similar to the normal part, the loop forming thread and the spiral body do not protrude from the front and back surfaces, no step is generated between the joint part and the normal part, and the surface structure and ventilation Etc. can be substantially equivalent to the normal part.
Therefore, there is a problem that joints are locally worn and cut early, loop forming yarns and spirals are in direct contact with the conveyed product, and marks are formed on the conveyed product. Even in this case, there is no problem that unevenness of dehydration or drying is generated.
Further, the flexibility of the joint is not impaired, and there is no problem that the bending fatigue resistance is lowered.
[0011]
【Example】
Next, an example is given and it demonstrates concretely.
[0012]
FIG. 1 is a plan view showing an end portion before forming a joining loop of the present invention. The end of the fabric is simply cut with scissors or the like.
The fabric of the present embodiment constitutes a composite wire that is apparently formed by combining three metal wires.
The metal wires 1, 2, 3 and the metal wires 4, 5, 6 and the metal wires 7, 8, 9 constitute the composite wires 10, 11, 12 respectively. The tip of the warp is slightly left on the end side from the weft 13 at the end.
Of the metal wires 1, 2, and 3 constituting the composite wire 10, the metal wires 1 and 3 pass through the upper side of the weft 13 at the end, and the metal wire 2 passes through the lower side to form the composite wire 11. Of the metal wires 4, 5, 6, the metal wire 5 passes above the weft 13 at the end, the metal wires 4, 6 pass below, and the metal wires 7, 8, 9 constituting the composite wire 12 Of these, the metal wires 7 and 9 pass above the weft 13 at the end, and the metal wire 8 passes below. It can be seen that at least one of the metal wires constituting the composite wire passes under the weft.
[0013]
FIG. 2 is a plan view showing a state in which the tip of the composite wire is welded.
The welded portion 14 is a portion where the tip portion is welded and integrated. Since the individual wires constituting the composite wire are in close contact with each other, the tip portion is easily welded. At this time, it is necessary not to weld the weft 13 at the end part integrally.
FIG. 3 is a side view of FIG. It can be seen that the metal wire 8 is welded and integrated at a portion where the metal wire 9 contacts from the lower side to the upper side and the metal wire 9 contacts from the upper side to the lower side.
[0014]
FIG. 4 is a plan view showing a state in which the weft 13 at the end shown in FIG. 3 is removed. Since the weft 13 is not integrated with the metal wire which is the warp, it can be easily removed.
FIG. 5 is a side view of FIG. It can be clearly understood that the joining loop 15 is formed in the portion from which the weft 13 is removed.
As described above, the joining loop of the present invention can be formed by welding the tip of the metal wire in the presence of the weft and removing the weft at the end, so that the warp shape of the warp at the loop forming portion is completely broken. There is nothing. Therefore, the structure of the loop part for joining becomes an approximate structure with the normal part, the surface structure and smoothness can be made substantially equal to the normal part, and the joined part does not protrude from the fabric surface compared with the normal part. .
[0015]
FIG. 6 is a plan view showing the joint portion of this embodiment.
The joining loops formed at both ends are engaged with each other, and the core wire 16 is inserted into the common hole formed by the engagement.
FIG. 7 is a side view of FIG. It can be clearly understood that the core wire 16 is inserted into the common hole 17 formed by engaging the joining loops at both ends, and both ends are joined.
[0016]
FIG. 8 shows a joint portion of the embodiment in which the joining loop 15 is formed by every other composite wire.
The metal wires of the composite wire 10 and the composite wire 12 at the upper end are welded at their tips to form a joining loop 15, and the metal wire of the composite wire 11 exists in the portion where the joining loop 15 is formed. A portion of the weft 18 that is one inner side than the removed weft is slightly folded back and welded.
On the contrary, the metal wire of the composite wire 11 is welded at the tip thereof to form a joining loop, and the metal wires of the composite wire 10 and the composite wire 12 are folded and welded.
Then, a joining loop on the opposite side is inserted into a portion where the joining loop is not formed, a common hole of the joining loop is formed in that portion, and the core wire 16 is inserted to form a joined portion. This has the advantage that the number of warp yarns at the joint can be made the same as the normal part.
[0017]
FIG. 9 shows an example of a joining loop in which a composite wire is formed by combining three metal wires into an apparent single wire, and a loop is formed by two of the three metal wires. It is an example. Of the three metal wires 1, 2, and 3, the tips of the metal wires 1 and 2 are welded to form a joining loop 15, and the metal wire 3 is folded back and welded.
[0018]
FIG. 10 is an example showing a joining loop that constitutes a composite wire that is formed by combining four metal wires into an apparent single wire. The tip ends of the four metal wires 1, 2, 3, 4 are welded to form a joining loop 15.
[0019]
FIG. 11 shows an implementation showing a joining loop in which a composite wire is formed by combining four metal wires into an apparent single wire, and a loop is formed by two of the four metal wires. It is an example. Of the four metal wires 1, 2, 3, 4, the tips of the metal wires 2, 3 are welded to form a joining loop 15, and the metal wires 1, 4 are folded back and welded.
As described above, it is not necessary to form the joining loop by using all the metal wires of the structural units forming the composite wire, and the joining loop may be formed by a part of the metal wires. A loop can be formed if there are at least two metal lines that are adjacent and intersect the top and bottom of the weft.
In the present invention, since the joining loop is formed at the portion where the weft yarn originally existed, the pitch between the weft yarn at the end and the core wire 16 when both ends are joined is exactly the same as the weft pitch at the ordinary portion. The weft density of the part can be formed the same as that of the normal part.
Since the weft density of the joint portion and the warp shape of the warp can be formed in the same manner as the normal portion, the core wire is arranged in exactly the same state as the normal portion of the weft.
Further, in the present invention, the smoothness may be further improved by inserting the core wire as necessary and then crushing the joint with a roller or the like.
[0020]
Comparative test Next, the tensile strength and the roller folding resistance test were carried out between the joint portion of Example 1 and the joint portion joined by the overcasting, and the joint production time and the state after joining were compared.
The woven fabric used was a composite wire consisting of 7 strands of warp made of stainless steel with a wire diameter of 0.234 mm, combined with 3 strands to make an apparent 1 wire, 4 wires per inch It is a woven fabric in which ten wefts are arranged per inch with a single wire made of stainless steel having a wire diameter of 1.2 mm.
[0021]
Tensile test The strength at break was compared with a tensile tester.
In the tensile strength test, the example was 21.6 Kg / cm, whereas the overburden lacing was 14.8 Kg / cm.
It is 45.9% better than the strength overrun racing of the example.
[0022]
The roller folding test test conditions were a roll diameter of 40 mm, a stroke of 400 mm, and a speed of 40 times / min.
Example 1 was 440 times, and overlock racing was 82 times. Moreover, the normal part was 531 times.
Example 1 is excellent by 436.6% as compared with the overlock racing.
Further, the heel racing is only 15.4% of the strength of the normal portion, whereas the strength of the embodiment is 82.9% of the strength of the normal portion.
Therefore, when it is actually used, it can be used according to the life of the fabric of the normal part.
The joint manufacturing time was about one third of the time required for the racing over the working example.
Also in the state after joining, the surface property, thickness, rigidity, etc. of Example 1 were almost the same in the normal part, whereas in the case of racing, the racing line protruded and the surface property was poor and the flexibility was impaired. Met.
[0023]
【The invention's effect】
As described above, the present invention allows the structure of the joint portion to be a normal portion easily in a short time despite the fact that it is a joint portion by loop formation that can be freely formed endless or endless. The joint part formed substantially the same can be formed, and the strength and the bending resistance of the joint part are excellent, and there is an excellent effect that the service life of the entire woven fabric can be extremely prolonged.
[Brief description of the drawings]
FIG. 1 is a plan view showing an end of a fabric.
FIG. 2 is a plan view showing a position where a warp tip is welded.
FIG. 3 is a side view of FIG. 2;
FIG. 4 is a plan view showing a joining loop in a state in which the weft at the end portion is pulled out.
FIG. 5 is a side view of FIG. 4;
FIG. 6 is a plan view showing a joint portion.
7 is a side view of FIG. 6. FIG.
FIG. 8 is a plan view showing a joint portion of another embodiment.
FIG. 9 is a plan view showing a joining loop according to another embodiment.
FIG. 10 is a plan view showing a joining loop according to another embodiment.
FIG. 11 is a plan view showing a joining loop of another embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Metal line which forms composite line 2 Metal line which forms composite line 3 Metal line which forms composite line 4 Metal line which forms composite line 5 Metal line which forms composite line 6 Metal line which forms composite line 7 Composite Metal wire 8 that forms a wire 9 Metal wire that forms a composite wire 9 Metal wire 10 that forms a composite wire 10 Composite wire 11 Composite wire 12 Composite wire 13 Weft 14 Welding portion 15 Joining loop 16 Core wire 17 Common hole 18 Weft inside

Claims (7)

Combining a plurality of metal wires into an apparent single wire is used as a warp, and at least one of the metal wires constituting the composite wire is passed over the weft, and at least one is passed under the weft. Welding the composite wire at the tip of the warp consisting of the composite wire at both ends of the end-finished industrial fabric formed by weaving, removing the weft at the outermost part, and joining by the hole formed in the part excluding the weft A joint for industrial textiles, in which a loop is formed and a core wire is inserted and joined to a common hole of the joining loop formed by combining the joining loops at both ends. The joint part of the industrial fabric according to claim 1, wherein the metal wire of the structural unit constituting the composite wire which is apparently one wire is a wire formed by one metal element wire. 2. The industrial fabric according to claim 1, wherein the metal wire of the structural unit constituting the composite wire which is apparently one wire is a wire formed by a converging wire in which a plurality of metal wires are combined. Junction. The industrial fabric according to claim 1, wherein the metal wire of the structural unit constituting the composite wire which is apparently one wire is a wire formed by twisting a plurality of metal strands. Joints. The joint part of the industrial textiles described in any one of Claims 1 thru | or 4 whose composite wire which forms a warp is the wire | line which formed and formed several metal wires side by side. The joint part of the industrial fabric according to any one of claims 1 to 5, wherein the ends of all warps composed of the composite wires at both ends are welded to form a joining loop at the ends of all the warps. It is a joint part of the industrial fabric described in any one of Claims 1 thru | or 5, Comprising: The front-end | tip of every one or several warps of the warp which consists of a composite wire of both ends is welded, and the front-end | tip is welded The unwelded warp is folded back and welded to each warp and the inner weft.

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