Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
  • F16G3/00—Belt fastenings, e.g. for conveyor belts
  • F16G3/08—Belt fastenings, e.g. for conveyor belts consisting of plates and screw-bolts or rivets

Definitions

• the present invention relates to a joining device for conveyor belts for connecting ends of a conveyor belt.
• conveyor belt will, by convention, in the present description, both the conveyor belt and belt direction.
• Conveyor belts also known as conveyor belts, are known to transport different materials or products, such as coal, ores, industrial or agricultural products.
• These conveyor belts consist of strips made of a reinforced elastomer, or an armed synthetic material, of an appropriate length and width, the ends of which must be connected together, before assembly, or after mounting, on support and driving devices comprising return rollers and idler rollers. Often these devices also comprise tensioning members, for the purpose of tightening the conveyor belt.
• vulcanization is used when the web is made of a reinforced vulcanizable elastomer. After preparation work to create in each end complementary profiles that apply to each other when bringing said ends closer, the vulcanization is carried out with input of heat and pressure as is well known. A variant of vulcanization is cold bonding.
• connection means consists in using U-shaped clips cut in metal strip, which clips comprise upper plates and lower plates connected by knuckles, these clips being fixed in two series to mounted on each of the ends of the conveyor belt to be connected, so that the knuckles protrude and that those of one series can be interwoven between the knuckles of the other series, a connecting rod and hinge being then passed to the The interior of the knuckles is nested so as to connect the two ends thus forming a kind of hinge.
• Known means used to secure the staples on the conveyor belt ends consist of rod attachment means such as spikes, rivets and screws.
• These devices comprise an upper plate and a lower plate, possibly connected by a central part.
• These lower and upper plates have a spacing adapted to engage the respective end of a conveyor belt, by making it come approximately abutting against the central portion, or in the case where the connecting device does not have a central portion. , against a spacer provided for this purpose during assembly, then removed later.
• these connecting devices comprise two pairs of fixing wings vis-a-vis, the ends of the conveyor belt being introduced respectively between two wings of the same pair.
• the fixing of the lower and upper parts forming a connecting plate on the ends of the conveyor belt is generally carried out by means of rivets, spikes, crampons, screw-nut systems, or by cold gluing or by flat vulcanization. wings against the outer flat surfaces of the conveyor belt engaged between the wings.
• These joining devices are made of a flexible and elastic material, for example vulcanized rubber, or a synthetic material such as polyurethane and they generally comprise an embedded reinforcement.
• the proposed junction devices are generally made of a flexible and elastic material in which is embedded a reinforcement, for example textile, having a stretch in the longitudinal direction.
• the longitudinal direction is by convention and for the convenience and clarity of the disclosure throughout the present description the longitudinal direction of the conveyor, and also applies to the operating device as it should be mounted on the conveyor belt.
• the transverse direction is the direction perpendicular to the longitudinal direction thus defined, whatever the dimensions of the splicing device considered in isolation.
• This extensibility of the reinforcements of this kind of joining devices in the longitudinal direction is intended to allow the operating devices mounted on the conveyor belts, to cross repeatedly, without wear or excessive fatigue, resulting in rapid deterioration, the curved parts the conveyor belt path, that is, bypassing the drive rollers, idler rollers and idler rollers.
• the upper part of the junction devices undergoes a force while their lower part (that is to say the one facing the outer surface of the rollers) undergoes a compressive force, and this, because of the difference in the course of these parts, these courses being directly proportional to the radius of curvature, which varies due to the thickness of the junction devices. Since these stresses are very different between the lower and upper parts, and in order to further improve the wear resistance of these joining devices, it is known to give the upper part a greater extensibility than that of the lower part.
• the central part has then evolved so as to be separated from the lower and upper plates, so as to leave room for the use of independent spacers used at the time of assembly against which the first of the ends of the conveyor belt which is set up in the junction, between the lower and upper plates, then these spacers are removed before placing the second end of the conveyor belt.
• junction devices were made by molding or injection and had an "H" structure whose lower and upper plates and the central portion were formed in one piece. This required for their manufacture as many molds as the thickness of conveyor belts encountered in the field, and had to be manufactured, therefore, in very small series, which increased the cost price, the manufacture, storage and the distribution.
• the lower plate is arranged to undergo without damage the passage on rollers, motors or return, causing or returning the conveyor belt at the ends of which is mounted the connecting device considered, the lower plate coming directly into contact with these drive members of the band.
• the upper plate is directly in contact with the different materials or different products transported on the conveyor belt.
• the upper plate is also generally swept by scrapers.
• the object of the present invention is to propose a solution which corresponds to an evolution of this type of existing junctions and which makes it possible to guarantee even a reduction of costs in order to reduce the cost price, to manufacture, storage and distribution. this of course without harming in any way the quality of the product obtained, that is to say, by maintaining or improving the quality and strength of the connecting device and ensuring the excellence of these fastening means .
• the invention relates to a junction plate for a conveyor belt connection device for connecting two ends of a conveyor belt, the junction device being of the type comprising at least two junction plates fastened together with the ends. of the conveyor belt by fastening means each comprising a head and an anchoring section, for example an anchoring end opposite to the head, the connecting plate being remarkable in that it comprises first interfaces for cooperating with the heads of the fastening means and the second interfaces to cooperate with the anchoring sections of the fastening means, the second interfaces being distinct from the first interfaces and comprising inserts incorporated at least partly in the joining plate, the first and second interfaces being arranged to form a succession of repeating patterns, and that aque motif has as many first interface (s) as second interface (s).
• the invention also relates to an alternative solution, possibly complementary, namely a connecting plate for a conveyor belt joining device intended to connect two ends of a conveyor belt, the joining device being of the type comprising at least two plates of junction fixed together with the ends of the conveyor belt by fastening means each comprising a head and an anchor portion provided with a thread, the junction plate being remarkable in that it comprises first interfaces to cooperate with the heads of the fastening means and the second interfaces for cooperating with the anchoring sections of the fastening means, the first and second interfaces being arranged so as to form a succession of patterns which are repeated, and in that each pattern has as many first interface (s) as second interface (s).
• Such a joining plate has the particular advantage of being able to be used both as an upper joining plate and as a lower joining plate. In this way, it becomes possible to manufacture a single type of junction plates and no longer two different junction plates, each having, in the prior art, the same type of fastener interfaces.
• interface an element or a means that is configured to allow to establish a cooperation between two elements.
• junction plates are generally cut into a strip or portion of continuous strip of several successive junction plates. In such a configuration, it is thus possible to manufacture a lower junction plate and a corresponding upper junction plate from the same strip or portion of junction strip, despite the fact that the first and second interfaces are distinct. .
• a pattern comprises a first and a second sub-pattern, the second pattern being complementary to the first pattern, and the first and second interfaces being arranged so as to form an alternating succession of a first and a second sub-patterns that are repeated alternately and successively.
• a junction plate is able to be superimposed with another junction plate having the same characteristics in order to be able to mate with each other and together form a junction device.
• a junction plate has first and second opposed wings, each configured to cover a distinct end of the conveyor belt on the same side, each of said wings having a sub-pattern defined by a provision first and / or second interfaces, the sub-pattern of one of said wings being complementary to the sub-pattern of the other of said wings.
• the provisions of the interfaces defining each of the two sub-patterns are symmetrical with respect to a median axis of the junction plate separating said wings but that, at the position of a first interface on a wing corresponds the position of a second interface on the other wing.
• the first wing comprises only first interfaces and the second wing having only second interfaces.
• the first and / or second interfaces comprise inserts, the inserts being incorporated at least partly in the junction plates.
• the first interfaces comprise inserts, that is to say that they are not incorporated in the junction plate, and the second interfaces comprise inserts incorporated at least partly in the junction plate. .
• the inserts are arranged to complement and / or reinforce an interface area of the junction plate from a first interface, such as an orifice adapted to be traversed by the fastening means.
• the first interfaces comprise pierced washers comprising a bowl adapted to house a head of the fastening means.
• the washers forming first interfaces thus form associated parts around and in addition to an orifice of the junction plate adapted to be traversed by the fastening means.
• the washers may be incorporated into the same junction plate together, these washers may also be incorporated in the junction plate, that is to say embedded in the flexible and elastic material such as vulcanized rubber forming the junction plate.
• the second interfaces comprise a cylindrical tubular part whose inner cylindrical surface is adapted to cooperate with an anchoring section of the fixing means.
• the invention also relates to a conveyor junction device for connecting two ends of the conveyor belt, the junction device comprising at least two junction plates configured to each cover a distinct side of the ends of the conveyor belt.
• conveyor belt so that said conveyor belt is disposed between the two junction plates, the junction plates being fixed together by fastening means arranged to cross respectively a junction plate, one of the ends of the conveyor belt and then the another junction plate, the fixing means each comprising a head and an anchoring section, for example an anchoring end opposite to the head, the connecting plates having first interfaces for cooperating with the heads of the fixing means and second interfaces for cooperating with the anchoring sections of the fixing means one, the junction device being remarkable in that the junction plates have all or part of the aforementioned characteristics and in that they are arranged to mate with each other.
• Such a connecting device allows a reduction in costs to reduce the cost, manufacturing, storage and distribution since the connecting plates that compose it are manufactured in the same pattern while being complementary to allow the junction of the ends of the conveyor belt.
• each of the junction plates comprises as many first interfaces as second interfaces.
• the junction plates are identical.
• the patterns of the two junction plates are offset by a predetermined pitch.
• each of the junction plates comprises first and second opposed wings and configured to each cover a distinct end of the conveyor belt on the same side, the first wing comprising only first interfaces and the second wing comprising only second interfaces.
• each of the two wings of the junction plate has the same type of interface, first or second interfaces.
• This is particularly advantageous in terms of manufacture of the junction plate. Indeed, it being manufactured preferably continuously, it is possible to have in the same manufacturing area, on one side a tool that would put in place the first interfaces on one of the two wings, and, on the other side another tool that would put in place the second interfaces on one of the two wings. This operation can also be done manually, by two people concomitantly. During production, the production line is therefore particularly optimized and manufacturing time decreased since both operations can be performed concomitantly and not successively.
• the fastening means comprise screws having a head and an anchor section provided with a thread.
• the invention also relates to a method of manufacturing a joint plate having all or some of the aforementioned characteristics, remarkable in that it comprises at least the following steps:
• Such a manufacturing method is particularly advantageous in that it allows a continuous manufacture of several successive junction plates.
• the lower and upper junction plates are then cut in the same strip or strip portion thus manufactured.
• Figure 1 a plan view of a junction device of the prior art, seen from above;
• Figure 2 is a longitudinal sectional view along section AA of Figure 1 of a junction device, exploded the various elements that constitute it;
• FIG. 3A a plan view of a junction device according to an embodiment of the invention, seen from above;
• Figure 3B a longitudinal sectional view of the connecting device of Figure 3A;
• FIG. 4A a plan view of a junction device according to another embodiment of the invention, seen from above;
• Figure 4B a longitudinal sectional view of the connecting device of Figure 4A;
• FIG. 5 a perspective view of a junction device according to another embodiment of the invention.
• FIG. 6 is a sectional view of a fastening means according to one embodiment
• FIGS. 7A, 7B, 7c and 7d schematic examples of patterns formed by the first and second interfaces according to different embodiments.
• FIG. 1 which is a plan view, from above, of a junction device 1 according to the prior art and shows an upper junction plate 4 of a junction device 1.
• the skinned 11a and 11b show two types of textile-type reinforcements, which are woven: in the frame 11a, the fabric is arranged in such a way that its weft threads, or its warp threads, are oriented at least approximately in the longitudinal direction of the connecting device 1.
• the longitudinal direction X of the junction device 1 corresponds, in the present description, to the longitudinal direction X of the conveyor belt 2, the junction device 1 being mounted on the ends 3 of the conveyor belt 2 that it connects.
• the transverse direction Y of the junction device 1 is, according to the same convention, the direction perpendicular to the longitudinal direction X. This convention is applied regardless of the effective dimensions of the junction device 1 in these two directions.
• the junction device of FIG. 1 is composed of three elements: an upper junction plate element 4, an intermediate element 9 located under the middle part of the junction plate 4 which is not visible in Figure 1 other than by the two dashed lines located on either side of the two median screws 5 delimiting under the upper junction plate 4 the edges ends of the conveyor belt 2 to be connected, and a lower junction plate member 4, not visible in Figure 1, which is located under the intermediate member 9 and under the upper junction plate member 4.
• FIG. 2 shows successively: assembly screws 51 forming fixing means 5,
• the intermediate element 9 comprising an incorporated through bushing disposed vertically along a vertical axis Z,
• the inserts 6 arranged to receive the heads 5a of screws 51 are generally in the form of 61 drilled washers having a bowl adapted to house the heads 5a of the screws 5 intended to pass through the hole of the drilled washers.
• the central insert 6 ' is generally like the inserts 6 but has a central tubular portion, whose inner cylindrical surface is able to pass, with a very small clearance, to the corresponding screw 5, this screw does not thus not screwing into the insert 6 '.
• the central tubular portion of the insert 6 ' protrudes from the lower surface of the upper joining plate 4.
• the inserts 7 each comprise a central tubular portion whose internal cylindrical surface is threaded and is adapted to receive a screw 51 screwed into the internal thread, said central tubular parts protruding from the upper surface of the lower junction plate 4 of the device. junction 1.
• the medial inserts T of the lower plate are like the inserts 7.
• FIGS. 3A and 3B respectively show a plan view of a junction device 1 according to one embodiment of the invention, seen from above and a longitudinal sectional view of this junction device 1.
• the junction device 1 comprises two junction plates 4 configured to be fastened together with the ends 3 of the conveyor belt 2 by fastening means 5 each comprising a head 5a and an anchoring section 5b forming an opposite anchoring end. at the head 5a (see Figure 6).
• junction plates 4 of this junction device comprises first interfaces 6 for cooperating with the heads 5a of the fixing means 5 and second interfaces 7 to cooperate with the anchoring sections 5b of the fixing means 5.
• the first and second distinct interfaces 6, 7 are arranged on each of the junction plates 4 so as to form a succession of patterns 8 which are repeated, and in that each pattern 8 has as many first interfaces 6 as second interfaces 7.
• junction plates 4 of the connecting device 1 are arranged to mate with each other, that is to say that, in the assembled position of joining of said junction device 1:
• each first interface 6 of a junction plate 4 is facing, vertically, with a second interface 7 of the other junction plate 4 of said junction device 1; and conversely:
• each second interface 7 of a junction plate is facing, vertically, with a first interface 6 of the other junction plate 4 of said junction device 1,
• each fastening means 5 cooperating with a pair of first and second interfaces facing each other, that is, aligned vertically to match the two joining plates 4.
• junction device 1 provided with such junction plates 4 has the particular advantage of being able to present junction plates 4 that can be used indifferently as junction plate 4 upper or as a lower junction plate 4.
• junction plates are generally cut in a strip or continuous strip portion of several successive junction plates extending in a main direction of this strip or strip portion, this main direction corresponding to the transverse direction Y of the strip conveyor.
• the junction plates 4 are obtained after cutting, from said strip or band portion thus manufactured, junction plates 4 following predetermined dimensions.
• the size of the cutout of a predetermined length is chosen according to the main direction of elongation of the strip or portion of strip so as to correspond to the width of the conveyor belt 1 whose ends must be connected and joined, each of the plates junction 4 extending over the entire width of the conveyor belt 2.
• each pattern 8 has as many first interfaces 6 as second interfaces 7, it is then possible to form lower and upper junction plates 4 from the same band or band portion then manufactured.
• the reinforcement (generally of textile type) is configured to have an extensibility of between 10% and 25%, preferably between 15% and 20%.
• Stretchability is understood to mean the elongation capacity of the armature, that is to say that an extensibility of between 10 and 25% means that it is configured to withstand an elongation of at least 10 % and up to 25%, this without breakage or damage.
• This extensibility of the reinforcement ie this longitudinal elastic elongation, also determines the extensibility of the joining plate itself since the reinforcement has a lower extensibility than that of the flexible material and elastic in which it is embedded (vulcanized rubber, synthetic material such as polyurethane, etc.).
• Such extensibility in the longitudinal direction provides a good compromise of resistance to the stresses experienced by both the lower joint plate and the upper joint plate.
• the first interfaces 6 comprise washers 61 forming inserts, said washers being held firmly against the connecting plate 4 by the pressure exerted by the head 5a of the fastening means 5. associated with said washer 61.
• This pressure causes an elastic deformation of the material constituting the connecting plate 4 so that the washer 61 is housed in a recess of said connecting plate so that the washer 61 and the head 5a of the connecting means. both are flush, in the fixed position of the connecting device, with the associated surface of the junction plate 4.
• This recess here created by simple elastic deformation can also be defined during the manufacture of the plate junction 4 by a cavity delimited beforehand in said junction plate 4 around the orifice intended to be traversed by the fixing means 5, this cavity being arranged to receive and receive the washer 61, this for each of the first interfaces 6 .
• the second interfaces 7 comprise inserts 70, the inserts 70 of the second interfaces 7 being incorporated in the corresponding junction plate 4, and in particular embedded in the material constituting the junction plate 4, being however, protruding from the inward junction plate of the joining device 1 (i.e. towards the side where the joining strip is located in the assembled position).
• This projection of the insert 70 is also preferably embedded in the material constituting the connecting plate 4.
• the first interfaces 6 comprise washers 61 pierced with a bowl 62 adapted to house a head 5a fastening means 5;
• the second interfaces 7 comprise a cylindrical tubular portion 71 whose inner cylindrical surface 72 is adapted to cooperate with an anchoring section 5b of the fixing means 5.
• the two junction plates are identical and each of said junction plates 4 has as many first interfaces 6 as second interfaces 7.
• each of the junction plates 4 comprises first and second longitudinally opposed wings 41, 42, each configured to cover a different end of the conveyor belt 2 on the same side since a junction plate 4 is disposed on the same side: one of the wings is configured to cover a side 3a of one end of the conveyor belt 2 and the other of the wings is configured to cover the same side 3a of the other end 3 of the conveyor belt 2 to be connected.
• Each of said wings 41, 42 comprises a sub-pattern 8a, 8b defined by a geometric arrangement of the first and / or second interfaces 6, 7, the sub-pattern 8a of one of said 41 wings being complementary to the sub-pattern 8b on the other 42 of said wings.
• each wing 41, 42 comprising a single row of interfaces:
• one of the wings has a row of first interfaces 6 extending along the main direction of elongation of the junction plate 4, namely in the transverse direction Y of the junction device 1, a first interface 6 forming alone a subpattern 8a;
• the other 42 wings has a row of second interfaces 7 extending along the main direction of elongation of the connecting plate 4, namely in the transverse direction Y of the junction device 1, a second interface 7 forming alone a subpattern 8b.
• a pattern 8 in this embodiment is formed by the sub-patterns 8a and 8b aligned in the longitudinal direction X. These two sub-patterns are complementary and a second junction plate 4, identical to the first and having the same pattern 8 , can be superimposed on it to pair with each other.
• the upper junction plate 4 it suffices for the upper junction plate 4 to be oriented in the opposite direction to that of the lower junction plate 4 so that the flange 41 of one of the junction plates 4 is look with the other wing 42 of the other junction plate 4.
• each of the rows of interfaces may be composed of a succession of first and second interfaces 6, 7 alternating along the transverse direction Y of the junction device 1, identical interfaces being aligned along the longitudinal direction X of the junction device 1, a pattern 8 then comprises:
• a first sub-pattern 8a formed by a row portion having a first and a second interface 6, 7, and
• a second sub-pattern 8b formed by a row portion having respectively a first and a second interface 6, 7,
• the second pattern 8b here being symmetrical with the first pattern 8a with respect to a median axis D 'of the joining plate 4 (see FIG. 7A), and the first and second interfaces 6, 7 being arranged so as to form an alternating succession of 'a first and a second sub-pattern 8a, 8b which are repeated alternately and successively.
• junction plate 4 is able to be superimposed with another junction plate having the same characteristics in order to form, together, a junction device 1.
• a step corresponds to a half-pattern in the transverse direction Y of the junction device 1 so that each first interface of a junction plate 4 is arranged vertically to the right of a second interface of the other plate. junction of the junction device 1 corresponding.
• the fastening means 5 are not illustrated in FIGS. 3A and 3B: these fastening means 5 typically comprise screws 51 having a head 5a and an anchoring section 5b provided with a thread 52. They are illutrated in detail on Figure 6.
• FIGS. 4A and 4B respectively show a plan view of a junction device 1 according to one embodiment of the invention, seen from above and a longitudinal sectional view of this junction device 1.
• each of the wings 41, 42 comprises two rows of interfaces.
• each wing 41, 42 of a junction plate 4 comprises two rows of interfaces:
• one of the wings has two substantially parallel rows of first interfaces 6 extending along the main direction of elongation of the junction plate 4, namely in the transverse direction Y of the junction device 1, two first interfaces 6 neighbors longitudinally together forming a sub-pattern 8a;
• the other 42 wings has two substantially parallel rows of second interfaces 7 extending along the main direction of elongation of the junction plate 4, namely in the transverse direction Y of the junction device 1, two second interfaces 7 neighbors longitudinally together forming a sub-pattern 8b.
• Figure 5 illustrates a perspective view of a junction device 1 according to another embodiment of the invention.
• each of the wings comprises three rows of interfaces.
• each wing 41, 42 of a junction plate 4 comprises three rows of interfaces:
• one of the wings 41 has three rows of first interfaces 6 extending along the main direction of elongation of the junction plate 4, namely in the transverse direction Y of the junction device 1, three neighboring first interfaces 6 longitudinally and substantially aligned together forming a sub-pattern 8a;
• the other 42 wings present, three rows of second interfaces 7 extending along the main direction of elongation of the junction plate 4, namely in the transverse direction Y of the junction device 1, three second interfaces 7 longitudinally adjacent and substantially aligned together forming a sub-pattern 8b.
• each of the wings are arranged in staggered rows, in order to evenly distribute the forces transmitted by the fastening means to the junction plates 4 in the junction position.
• FIG. 6 is a section along a vertical plane of an exemplary fastening means 5 according to the present invention, comprising a screw 51 forming an assembly screwed by the fixing means 5 comprising the upper joining plate 4, one end 3 of the conveyor belt 2 and the lower junction plate 4.
• the first interface 6 arranged to receive the heads 5a of screws 51 has a washer 61 pierced by an orifice and having a bowl around this orifice adapted to house the heads 5a of the screws 5 intended to pass into said hole washers 61 drilled.
• the second interface 7 comprises an insert 70 having a tubular portion 71 whose inner cylindrical surface is threaded and is adapted to receive a thread screw thread 51 forming the anchoring section 5b of the screw 51, this to be screwed.
• the tubular portion 71 of the insert 70 protrudes from the inner surface of the lower junction plate 4 of the joining device 1.
• FIGS. 7A, 7B, 7C and 7D illustrate schematic examples of patterns formed by the first and second interfaces 6, 7 according to different modes of embodiments and whose pattern is configured so that a successiveion of such patterns on a junction plate 4 can match with a succession of the same pattern of another junction plate 4 which would be arranged opposite the first.
• first and second interfaces 6, 7 are schematized by the numbers 1 and 2 surrounded, respectively, to facilitate understanding.
• first and second interfaces 6, 7 can be interposed, as is illustrated in more detail in the example of Figure 7D.
• the median axis when it is free of interfaces, that is to say when it has no interface in this area, it defines a median zone without interface between the two wings which improves the elasticity of the junction device at this location and improves its mechanical strength. Indeed, a row of interfaces along the median axis could favor to a lesser extent a beginning of rupture.
• a junction plate 4 is able to be superimposed with another junction plate having the same characteristics in order to form, together, a junction device 1.
• the upper junction plate 4 is oriented in the opposite direction to that of the lower junction plate so that the flange 41 of one of the junction plates 4 is facing the other flange 42 of the other plate of junction 4 but also that the two junction plates 4 of the junction device are shifted by a predetermined pitch p to be complementary.
• a step corresponds to a half-pattern in the transverse direction Y of the junction device 1 so that each first interface 6 of a junction plate 4 is arranged vertically to the right of a second interface 7 of the other junction plate 4 of the junction device 1 corresponding.
• FIG. 7B illustrates an exemplary embodiment which differs substantially from that of FIG. 7A in that the second pattern 8b here is complementary and no longer symmetrical with the first pattern 8a with respect to the median axis D 'of the plate junction 4.
• the same conveyor belt or conveyor can be formed by the meeting or joining of several conveyor belts connected together by a junction device as described above.
• the number of rows of interfaces may also vary depending on the desired use.
• the patterns may vary.
• the junction plates 4 are obtained from the same pattern, whatever it may be, and configured so that said junction plates are able to mate with each other.

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