EP0052350B1 - Process for reinforcing the edges of a band - Google Patents

Process for reinforcing the edges of a band Download PDF

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Publication number
EP0052350B1
EP0052350B1 EP81109650A EP81109650A EP0052350B1 EP 0052350 B1 EP0052350 B1 EP 0052350B1 EP 81109650 A EP81109650 A EP 81109650A EP 81109650 A EP81109650 A EP 81109650A EP 0052350 B1 EP0052350 B1 EP 0052350B1
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EP
European Patent Office
Prior art keywords
reinforcing element
spirals
band
undulations
reinforcing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP81109650A
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German (de)
French (fr)
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EP0052350A1 (en
Inventor
Maurice Gauthier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
COFPA Compagnie des Feutres pour Papeteries et des Tissus Industriels SA
Original Assignee
COFPA Compagnie des Feutres pour Papeteries et des Tissus Industriels SA
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Publication date
Application filed by COFPA Compagnie des Feutres pour Papeteries et des Tissus Industriels SA filed Critical COFPA Compagnie des Feutres pour Papeteries et des Tissus Industriels SA
Priority to AT81109650T priority Critical patent/ATE13776T1/en
Publication of EP0052350A1 publication Critical patent/EP0052350A1/en
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Publication of EP0052350B1 publication Critical patent/EP0052350B1/en
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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/0027—Screen-cloths
    • D21F1/0072—Link belts

Definitions

  • the present invention relates to a method of reinforcing the edge of a strip consisting of spirals assembled together by their overlapping or by joining rods in which a reinforcing element is introduced at the edge of the strip which is supported on the ends of the spirals.
  • the ends of the joining rods are used to make the reinforcement and a selvedge wire is added thereto.
  • the method according to the invention does not have this drawback is characterized in that said element consists of a wire consisting of a series of the worst or of undulations of which at least one turn or undulation is introduced inside each spiral according to their axial direction.
  • said edge of the strip parallel to the longitudinal axis. It is thus possible to catch up with the edges of the strips which, because of the variations in the stresses during assembly and / or thermofixing, are not very straight.
  • the method according to the invention allows a rectification of the edges which obviously does not allow the known method using the ends of the rods as reinforcing elements.
  • the positioning of the reinforcing element inside the spirals of the strip is further reinforced by coating the edge of the strip over a width L greater than the penetration of the turns of the reinforcing element.
  • a conveyor belt 1 consists of spirals 2 and 3 arranged in the transverse direction relative to the longitudinal axis of the belt. These spirals 2 and 3 formed respectively in the right direction D and the left direction G are assembled by joining rods 5 made of synthetic material for example.
  • the edge of the strip is cut straight parallel to the longitudinal axis.
  • the ends of the cut spirals are at the same level as the end of the rod 5 connecting the spirals.
  • the turns of a reinforcing spiral 10 are introduced inside the spirals in the channel left free and at the edge of the strip.
  • the bottom 11 of a loop of the reinforcing spiral is applied against the ends e i spirals of the strip and e 2 of the junction ring.
  • the turns 12 of the reinforcing spiral 10 are maintained inside the spirals 2, 3 of the strip by friction against these spirals.
  • an additional reinforcement of the selvedge is obtained by introducing a reinforcing wire 13 into the bottom 11 of the reinforcement turns, between the ends e 1 of the spirals of the strip and the reinforcement spiral 10.
  • the positioning of the reinforcement element 10 inside the spirals 2 and 3 of the strip is further reinforced by coating the edge 18 of the strip over a width L greater than the penetration of the spirals 12 of the reinforcement element 10 (fig 7).
  • the width of the turns 12 of the reinforcing element 10 must be sufficient for them to penetrate well inside the selvedges 18, a width of 20 mm is suitable.
  • the steps of the turns 12 depend on the number of spirals 2 and 3 joined in the longitudinal direction of the strip.
  • the thickness of the turns 12 of the reinforcing element 10 depends on the space available inside the spirals 2 and 3 of the strip. Too much thickness prevents its introduction into the spirals of the strip. Too small a thickness will not block the reinforcing element 10 inside the spirals of the strip.
  • the reinforcing element 10 may consist of monofilaments, multifilaments, impregnated braids, metallic threads. It can be covered with multifilament threads. It can be flocked to improve the adhesion of the selvedge impregnation adhesive.
  • reinforcement element 10 of the selvedges can take different forms.
  • FIG. 3 represents a variant in which the reinforcing element has a shape having pronounced undulations in a zigzag or accordion folding.
  • FIG. 5 represents a variant in which the reinforcing element comprises turns 19 of unequal lengths in each spiral of the strip to facilitate their introduction into the selvedges.
  • an additional reinforcement wire 13 can be introduced at the bottom 11 of the reinforcement coil, in a longitudinal direction, to improve the quality of the reinforcement.
  • This wire can be a monofilament, a multifilament, a single or twisted or cabled fabric thread, a chain.
  • FIG. 6 shows a variant of FIG. 2 in which a chain stitch reinforcement 20 connects the turns of the reinforcement element on the selvedge side; the chain, the meshes of which are formed around the spiral wires of the reinforcing element, acts as a reinforcement and maintains the correct spacing between the turns of the reinforcing element.
  • Each turn of the reinforcing element can be distant from the previous one by a value equal to the pitch of the spirals of the strip in the longitudinal direction.
  • the strip can consist of spirals assembled together by their nesting without the use of rods.
  • the reinforcing element 10 which is introduced into the spirals 2 and 3 at the edge of the strip, is supported only on the ends e, of the turns cut from the spirals.

Abstract

1. A method for reinforcing the edges of a band constituted of spirals (2, 3) assembled by their imbrication or by connecting rods (5), in which method on the edge of the band an additional reinforcing element (10) is introduced which rests on the ends of the spirals (2, 3), characterized in that said element (10) is constituted by a wire comprising a series of spires (12) or undulations (15), at least one spire (12) or undulation (15) of which is introduced into each spiral (2, 3) along their axial direction.

Description

La présente invention a trait à un procédé de renforcement de lisière de bande constituée de spirales assemblées entre elles par leur imbrication ou par des joncs de jonctionnement dans lequel on introduit en lisière de la bande un élément de renforcement qui s'appuie sur les extrémités des spirales.The present invention relates to a method of reinforcing the edge of a strip consisting of spirals assembled together by their overlapping or by joining rods in which a reinforcing element is introduced at the edge of the strip which is supported on the ends of the spirals.

Un tel procédé est décrit dans le document CH-A-610 273.Such a process is described in document CH-A-610 273.

Dans le procédé connu on utilise les extrémités des joncs de jonctionnement pour réaliser le renforcement et on y ajoute un fil en lisière.In the known method, the ends of the joining rods are used to make the reinforcement and a selvedge wire is added thereto.

Ce procédé est malaisé à mettre en oeuvre puisqu'il faut prédéformer au moins une extrémité des joncs.This process is difficult to implement since it is necessary to preform at least one end of the rods.

Le procédé selon l'invention ne présentant pas cet inconvénient est caractérisé en ce que ledit élément est constitué par un fil constitué d'une suite des pires ou d'ondulations dont au moins une spire ou ondulation est introduite à l'intérieur de chaque spirale selon leur direction axiale. Selon une réalisation particulière de l'invention avant d'introduire l'élément de renforcement en coupe la lisière de la bande parallèlement à l'axe longitudinal. On peut ainsi rattraper les bords des bandes qui, à cause des variations dans le contraintes lors de l'assemblage et/ou de la thermofi- xation, ne sont pas très droits.The method according to the invention does not have this drawback is characterized in that said element consists of a wire consisting of a series of the worst or of undulations of which at least one turn or undulation is introduced inside each spiral according to their axial direction. According to a particular embodiment of the invention before introducing the reinforcing element in section the edge of the strip parallel to the longitudinal axis. It is thus possible to catch up with the edges of the strips which, because of the variations in the stresses during assembly and / or thermofixing, are not very straight.

Le procédé selon l'invention permet une rectification des bords ce que ne permet évidemment pas le procédé connu utilisant les extrémités des joncs comme éléments de renforcement.The method according to the invention allows a rectification of the edges which obviously does not allow the known method using the ends of the rods as reinforcing elements.

Le positionnement de l'élément de renforcement à l'intérieur des spirales de la bande est encore renforcé par l'enduction de la lisière de la bande sur une largeur L supérieure à la pénétration des spires de l'élément de renforcement.The positioning of the reinforcing element inside the spirals of the strip is further reinforced by coating the edge of the strip over a width L greater than the penetration of the turns of the reinforcing element.

Pour accroître le renforcement on peut introduire au fond des spires du fil de renforcement un fil de renfort supplémentaire de sens longitudinal. L'invention va être décrite plus en détail en se référant à des modes de réalisation particuliers cités à titre d'exemple et illustrés sur les dessins annexés.

  • La figure 1 représente un mode préféré de réalisation du renforcement de lisière de bande selon l'invention.
  • La figure 2 représente le même mode avec un élément de renfort supplémentaire.
  • La figure 3 représente une variante de la figure 1.
  • Les figures 4 et 5 représentent d'autres variantes.
  • La figure 6 représente le mode de la figure 1 avec un autre élément de renfort supplémentaire.
  • La figure 7 est une vue de dessus de la bande selon la figure 1 après enduction d'une lisière.
To increase the reinforcement, it is possible to introduce an additional reinforcement wire in the longitudinal direction at the bottom of the turns of the reinforcement wire. The invention will be described in more detail with reference to particular embodiments cited by way of example and illustrated in the accompanying drawings.
  • Figure 1 shows a preferred embodiment of the strip edge reinforcement according to the invention.
  • Figure 2 shows the same mode with an additional reinforcing element.
  • FIG. 3 represents a variant of FIG. 1.
  • Figures 4 and 5 show other variants.
  • Figure 6 shows the mode of Figure 1 with another additional reinforcing element.
  • Figure 7 is a top view of the strip according to Figure 1 after coating a selvedge.

Dans les formes de réalisation représentées une bande transporteuse 1 est constituée de spirales 2 et 3 disposées dans le sens transversal par rapport à l'axe longitudinal de la bande.Ces spirales 2 et 3 formées respectivement dans le sens droite D et le sens gauche G sont assemblées par des joncs de jonctionnement 5 en matière synthétique par exemple.In the embodiments shown a conveyor belt 1 consists of spirals 2 and 3 arranged in the transverse direction relative to the longitudinal axis of the belt. These spirals 2 and 3 formed respectively in the right direction D and the left direction G are assembled by joining rods 5 made of synthetic material for example.

La lisière de la bande est coupée droite parallèlement à l'axe longitudinal. Les extrémités des spirales coupées sont au même niveau que l'extrémité du jonc 5 reliant les spirales.The edge of the strip is cut straight parallel to the longitudinal axis. The ends of the cut spirals are at the same level as the end of the rod 5 connecting the spirals.

A l'intérieur des spirales dans le canal laissé libre et en lisière de la bande, on introduit les spires d'une spirale de renforcement 10. Le fond 11 d'une boucle de la spirale de renforcement s'applique contre les extrémités ei des spirales de la bande et e2 du jonc de jonctionnement. Les spires 12 de la spirale de renforcement 10 se maintiennent à l'intérieur des spirales 2, 3 de la bande par frottement contre ces spirales.Inside the spirals in the channel left free and at the edge of the strip, the turns of a reinforcing spiral 10 are introduced. The bottom 11 of a loop of the reinforcing spiral is applied against the ends e i spirals of the strip and e 2 of the junction ring. The turns 12 of the reinforcing spiral 10 are maintained inside the spirals 2, 3 of the strip by friction against these spirals.

Dans la figure 2 un renforcement supplémentaire de la lisière est obtenu en introduisant un fil de renfort 13 dans le fond 11 des spires de renforcement, entre les extrémités e1 des spirales de la bande et la spirale de renforcement 10. Le positionnement de l'élément de renforcement 10 à l'intérieur des spirales 2 et 3 de la bande est encore renforcé par l'enduction de la lisière 18 de la bande sur une largeur L supérieure à la pénétration des spirales 12 de l'élément de renforcement 10 (fig. 7).In FIG. 2, an additional reinforcement of the selvedge is obtained by introducing a reinforcing wire 13 into the bottom 11 of the reinforcement turns, between the ends e 1 of the spirals of the strip and the reinforcement spiral 10. The positioning of the reinforcement element 10 inside the spirals 2 and 3 of the strip is further reinforced by coating the edge 18 of the strip over a width L greater than the penetration of the spirals 12 of the reinforcement element 10 (fig 7).

La largeur des spires 12 de l'élément de renforcement 10 doit être suffisante pour qu'elles péné- trent bien à l'intérieur des lisières 18, une largeur de 20 mm convient.The width of the turns 12 of the reinforcing element 10 must be sufficient for them to penetrate well inside the selvedges 18, a width of 20 mm is suitable.

Les pas des spires 12 dépend du nombre de spirales 2 et 3 jonctionnées dans le sens longitudinal de la bande.The steps of the turns 12 depend on the number of spirals 2 and 3 joined in the longitudinal direction of the strip.

L'épaisseur des spires 12 de l'élément de renforcement 10 dépend de l'espace disponible à l'intérieur des spirales 2 et 3 de la bande. Une épaisseur trop forte empêche son introduction dans les spirales de la bande. Une épaisseur trop faible ne bloquera pas l'élément de renforcement 10 à l'intérieur des spirales de la bande. L'élément de renforcement 10 peut être constitué de mono- filaments, de multifilaments, de tressses imprégnées, de fils métalliques. Il peut être guipé de fils multifilaments. Il peut être floqué pour améliorer l'adhérence de la colle d'imprégnation des lisières.The thickness of the turns 12 of the reinforcing element 10 depends on the space available inside the spirals 2 and 3 of the strip. Too much thickness prevents its introduction into the spirals of the strip. Too small a thickness will not block the reinforcing element 10 inside the spirals of the strip. The reinforcing element 10 may consist of monofilaments, multifilaments, impregnated braids, metallic threads. It can be covered with multifilament threads. It can be flocked to improve the adhesion of the selvedge impregnation adhesive.

Dans des variantes l'élément de renforcement 10 des lisières peut prendre différentes formes.In variants the reinforcement element 10 of the selvedges can take different forms.

La figure 3 représente une variante dans laquelle l'élément de renforcement a une forme présentant des ondulations prononcées 15 en zig-zag ou pliage accordéon.FIG. 3 represents a variant in which the reinforcing element has a shape having pronounced undulations in a zigzag or accordion folding.

Dans le cas de la figure 4 deux spires successives 16, 17 de l'élément de renforcement sont introduites dans chaque spirale de la bande pour améliorer la tenue de l'élément de renforcement par la colle d'imprégnation des lisiéres.In the case of FIG. 4, two successive turns 16, 17 of the reinforcing element are introduced into each spiral of the strip to improve the resistance of the reinforcing element by the edge impregnation adhesive.

La figure 5 représente une variante dans laquelle l'élément de renforcement comporte des spires 19 de longueurs inégales dans chaque spirale de la bande pour faciliter leur introduction dans les lisières.FIG. 5 represents a variant in which the reinforcing element comprises turns 19 of unequal lengths in each spiral of the strip to facilitate their introduction into the selvedges.

Comme on l'a vu pour la figure 2, on peut introduire au fond 11 de la spire de renforcement un fil de renfort supplémentaire 13, de sens longitudinal, pour améliorer la qualité du renfort. Ce fil peut être un monofilament, un multifilament, un fil en tissu simple ou retors ou câblé, une chaîne.As we have seen for FIG. 2, an additional reinforcement wire 13 can be introduced at the bottom 11 of the reinforcement coil, in a longitudinal direction, to improve the quality of the reinforcement. This wire can be a monofilament, a multifilament, a single or twisted or cabled fabric thread, a chain.

La figure 6 représente une variante de la figure 2 dans laquelle un renfort en point de chaînette 20 relie entre elles les spires de l'élément de renforcement côté lisière; la chaînette dont les mailles sont formées autour des fils en spirale de l'élément de renforcement, joue le rôle de renfort et maintient le bon écartement entre les spires de l'élément de renforcement. Chaque spire de l'élément de renforcement peut être distante de la précédente d'une valeur égale au pas des spirales de la bande dans le sens longitudinal.FIG. 6 shows a variant of FIG. 2 in which a chain stitch reinforcement 20 connects the turns of the reinforcement element on the selvedge side; the chain, the meshes of which are formed around the spiral wires of the reinforcing element, acts as a reinforcement and maintains the correct spacing between the turns of the reinforcing element. Each turn of the reinforcing element can be distant from the previous one by a value equal to the pitch of the spirals of the strip in the longitudinal direction.

La bande peut être constituée de spirales assemblées entre elles par leur imbrication sans utilisation de joncs. Dans ce cas l'élément de renforcement 10 qui est introduit dans les spirales 2 et 3 en lisière de la bande, s'appuie seulement sur les extrémités e, des spires coupées des spirales.The strip can consist of spirals assembled together by their nesting without the use of rods. In this case the reinforcing element 10 which is introduced into the spirals 2 and 3 at the edge of the strip, is supported only on the ends e, of the turns cut from the spirals.

Claims (7)

1. A method for reinforcing the edges of a band constituted of spirals (2, 3) assembled by their imbrication or by connecting rods (5), in which method on the edge of the band an additional reinforcing element (10) is introduced which rests on the ends of the spirals (2, 3), characterized in that said element (10) is constituted by a wire comprising a series of spires (12) or undulations (15), at least one spire (12) or undulation (15) of which is introduced into each spiral (2, 3) along their axial direction.
2. A method according to claim 1, characterized in that prior to the introduction of the reinforcing element (10), the edge of the band (1) is cut parallelly to the longitudinal axis.
3. A method according to one of the preceding claims, characterized in that an impregnation (18) of the edge of the band (1) is performed over a width L which is larger than the depth of penetration of the spires (12) or the undulations (15) of the reinforcing element (10).
4. A method according to one of the preceding claims, characterized in that a supplementary reinforcing element (13) is introduced between the bottom (11) of the spires (12) or undulations (15) of the reinforcing element (10) in the longitudinal direction of the band.
5. A method according to claim 4, characterized in that the supplementary reinforcing element (13) is fixed to the spirals (12) or undulations (15) of the reinforcing element (10) by means of a chain-stitch (20) which maintains the spirals (12) or undulations (15) of the reinforcing element (10) at the right distance.
6. A method according to one of the preceding claims, characterized in that the reinforcing element (10) comprises several spires (12) or undulations (15) introduced together into one spiral (2, 3) of the band (1).
7. A method according to claim 6, characterized in that the reinforcing element (10) comprises several spires (19) of different lengths in each spiral (2, 3) of the band (1).
EP81109650A 1980-11-19 1981-11-12 Process for reinforcing the edges of a band Expired EP0052350B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81109650T ATE13776T1 (en) 1980-11-19 1981-11-12 PROCEDURE FOR REINFORCING THE EDGES OF A TAPE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8024531 1980-11-19
FR8024531A FR2494320A1 (en) 1980-11-19 1980-11-19 METHOD AND DEVICE FOR STRENGTHENING BAND EDGE

Publications (2)

Publication Number Publication Date
EP0052350A1 EP0052350A1 (en) 1982-05-26
EP0052350B1 true EP0052350B1 (en) 1985-06-12

Family

ID=9248125

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81109650A Expired EP0052350B1 (en) 1980-11-19 1981-11-12 Process for reinforcing the edges of a band

Country Status (5)

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EP (1) EP0052350B1 (en)
AT (1) ATE13776T1 (en)
DE (1) DE3170953D1 (en)
ES (1) ES269283Y (en)
FR (1) FR2494320A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3315696A1 (en) * 1983-04-29 1984-10-31 Württembergische Filztuchfabrik D. Geschmay GmbH, 7320 Göppingen LINKED BAND, e.g. FOR PAPER PRODUCTION
DE3501981A1 (en) * 1985-01-22 1986-07-24 Hermann Wangner Gmbh & Co Kg, 7410 Reutlingen SPIRAL LINK WITH PROTECTED EDGES
DE3914534C1 (en) * 1989-05-02 1990-10-18 Thomas Josef Heimbach Gmbh & Co, 5160 Dueren, De
DE3914533A1 (en) * 1989-05-02 1990-11-08 Heimbach Gmbh Thomas Josef TAPE FOR PAPER MACHINES

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH610273A5 (en) * 1975-10-02 1979-04-12 Munzinger Conrad & Cie Ag Flat formation acting as a wire link conveyor

Also Published As

Publication number Publication date
DE3170953D1 (en) 1985-07-18
ES269283U (en) 1983-08-01
FR2494320A1 (en) 1982-05-21
EP0052350A1 (en) 1982-05-26
ES269283Y (en) 1984-02-16
FR2494320B1 (en) 1982-11-26
ATE13776T1 (en) 1985-06-15

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