Method for manufacturing ropes

Abstract

The present invention relates to a method for manufacturing a cord (10) comprising a first eyelet (12a), a second eyelet (12b), and an elongated central body (14) extending from the first eyelet (12a) to the second eyelet (12b). The cord (10) comprises a core (16) surrounded by a tubular protective sheath (18), the tubular protective sheath having, in sequence, a first end (22a), a first hole (24a), a first hole portion (26a), a second hole (28a), a central segment (30), a third hole (28b), a second hole portion (26b), a fourth hole (24b), and a second end (22b). The method is characterized by comprising at least: The first filling step includes inserting the tape (32) into the sheath (18) such that the tape (32) forms a closed loop, the closed loop exiting from the first hole (24a) and the second hole (28a) of the sheath (18) to form a first eyelet (12a), and exiting from the third hole (28b) and the fourth hole (24b) of the sheath (18) to form a second eyelet (12b); the second connecting step includes connecting the coil (36) of the wire (20) to the tape (32); and the third step of filling the sheath (18) includes rotating the tape (32) to unwind the coil (36) of the wire (20) and form the core (16) of the tape (10).

Description

Technical Field

[0001] This patent application relates to a method for manufacturing a strap.

[0002] "Cable" should be understood as a cable including a first eyelet, a second eyelet, and a slender central body extending from the first eyelet to the second eyelet, the cable including a central core surrounded by a protective tubular sheath.

[0003] This invention will find advantageous, but not limiting, applications in the field of ships and vessels, particularly for equipping sailboats to manufacture, for example, towlines, straps, textile hooks and chains, and lifelines. Background Technology

[0004] A first type of method for manufacturing a cord with two eyelets is known, which includes a first step of winding wire between two fixed points to form a loop.

[0005] The wire is wound around two fixed points several times, with each new loop increasing the mechanical strength of the cable.

[0006] Furthermore, by adjusting the axial distance between the two fixed points, the length of the loop formed by the winding wire can be adjusted, and thus the final length of the cable can be adjusted.

[0007] The loops obtained after the first winding step are held evenly by the tape.

[0008] Then, during the second wrapping step, a ring is inserted into the tubular sheath, such that the ring has two ends, each end protruding from the sheath, which form two holes for the cord.

[0009] The first method type includes a third step, which includes, for example, protecting the two eyelets of the strap with an additional sheath.

[0010] This method of manufacturing belt cords cannot satisfactorily complete two eyelets.

[0011] In fact, the protective sheaths for the two eyelets should be connected to the main sheath of the cable, as this connection may alter the uniformity of the strength of the wire bundle that forms the core of the cable.

[0012] A second type of method for manufacturing cords is known, wherein the sheath

[0013] From one end to the other, it has a first end, a first hole, a section between the first holes, a second hole, a central section, a third hole, a section between the second holes, a fourth hole, and a second end.

[0014] "End" should be understood as the free end of the sheath.

[0015] The second method type includes a first filling step, which includes manually assembling the wire into the sheath to form the core of the cord, such that the wire produces a loop that partially extends into the interior of the sheath, the loop exiting from a first hole and a second hole in the sheath to form a first eyelet, and exiting from a third hole and a fourth hole in the sheath to form a second eyelet.

[0016] For example, the first step sequentially includes processing the wire so that it is fitted into the sheath through the third hole, exits through the second hole, is fitted through the first hole, and then exits through the fourth hole.

[0017] The first step is repeated several times to increase the number of loops formed by the wire, and each new loop increases the mechanical strength of the cable.

[0018] Furthermore, the second method type according to the prior art includes a second finishing step, which includes: a first stage, which includes inserting the free end of the first end into the sheath through the second hole to cover the core of the first hole with the first hole portion of the sheath; and a second stage, which includes inserting the free end of the second end into the sheath through the third hole to cover the core of the second hole with the second hole portion of the sheath.

[0019] This second method type allows for obtaining a clean finished surface of the cable with a single sheath covering both eyelets of the cable and the slender central body.

[0020] However, manually executing this second method type results in high production costs, which limits this type of cable to racing sailboats or luxury sailboats. Summary of the Invention

[0021] In particular, the present invention aims to overcome the disadvantages of the prior art by providing a method for manufacturing straps that allows for the manufacture of straps with a clean finished surface and reduced manufacturing costs.

[0022] This objective, and other objectives that will arise when reading the following description, are achieved by a method for manufacturing a cord, the cord comprising a first eyelet, a second eyelet, and an elongated central body extending from the first eyelet to the second eyelet, the cord comprising a core surrounded by a protective tubular sheath having, in sequence, a first end, a first hole, a portion between the first holes, a second hole, a central segment, a third hole, a portion between the second holes, a fourth hole, and a second end, the method being characterized in that it comprises at least:

[0023] • The first loading step includes assembling the belt into the sheath such that the belt forms a closed loop, the closed loop protruding from a first hole and a second hole in the sheath to form a first eyelet, and protruding from a third hole and a fourth hole in the sheath to form a second eyelet;

[0024] • The second connection step includes connecting a roll of wire to the tape using an accessory; and

[0025] • The third step of filling the sheath includes driving the belt to rotate to unwind the wire coil or form the core of the cord.

[0026] Thus, the method according to the invention allows for the multiplication of the number of wire turns constituting the core of the cable by simply driving the belt assembled into the sheath to rotate during the first filling step.

[0027] Other optional features of the invention, considered individually or in combination:

[0028] - At the end of the third filling step, cut the wire attached to the roll and separate the attachment that attaches the wire to the roll, so that the wire forming the core of the cord has two free ends, which are connected together by a new attachment;

[0029] The method includes a fourth finishing step, performed after the third step, and includes: a first stage comprising inserting the free end of the first end into the sheath through a second hole to cover the core of the first eyelet with the first hole portion of the sheath; and a second stage comprising inserting the free end of the second end into the sheath through a third hole to cover the core of the second eyelet with the second hole portion of the sheath. This step allows the two eyelets of the cable to be covered with the same sheath covering the body of the cable, and closes the sheath;

[0030] - The fourth finishing step includes: a third stage, which includes making the first end protrude from the sheath beyond the second hole and cutting off the portion of the first end protruding from the sheath; and a fourth stage, which includes making the second end protrude from the sheath beyond the third hole and cutting off the portion of the second end protruding from the sheath.

[0031] The belt is tensioned between a first rotating element extending through a first eyelet and a second rotating element extending through a second eyelet, at least one of the two rotating elements being a driver rotating element adapted to drive the belt to rotate during the third step of the method. This feature of the method allows the belt to be mechanically driven, particularly by means of motor-driven rotating elements, to increase the number of wire turns forming the core of the belt cord;

[0032] - The axial spacing between the first and second rotating elements is adjustable to allow for adjustment of the cable length;

[0033] - The strip is formed by wires connected to itself;

[0034] - The wire that forms the core of the cord is made of continuous fibers;

[0035] - The wire that forms the core of the cable is composed of multiple strands;

[0036] - The core of the cord is composed of multiple strands that form the braid. Attached Figure Description

[0037] Other features and advantages of the invention will become better apparent upon reading the following description, with reference to the accompanying drawings, which illustrate:

[0038] Figure 1 An example is shown: a perspective front view of a cord manufactured by the manufacturing method according to the invention;

[0039] Figure 2 Examples are given based on Figure 1 axis 2-2 Figure 1 A cross-sectional view of a cable, which includes an outer sheath and a core;

[0040] Figure 3 A schematic top view of the cord during the first loading step of the method according to the invention is shown;

[0041] Figure 4 A schematic top view of the cable during the second connecting step of the method according to the invention is shown;

[0042] Figure 5 A schematic top view of the cord during the third filling step of the method according to the invention is shown;

[0043] Figure 6 An example is shown: a perspective front view of the cord during the third filling step of the method according to the invention;

[0044] Figure 7 A schematic top view of the cord during the third filling step of the method according to the invention is shown, wherein portions of the wire attached to the roll are cut off;

[0045] Figure 8 A schematic top view of the cord during the third filling step of the method according to the invention is shown, wherein the two free ends of the cord are connected together by a new attachment;

[0046] Figure 9 An example is shown: a perspective front view of the cable during the fourth finishing step of the method according to the invention;

[0047] Figure 10 A schematic top view of the tape during the first loading step of a method according to a variant of the invention is shown, wherein the tape is closed by wires forming the core of the tape; and

[0048] Figure 11 Examples Figure 10 A schematic top view of the cable during the second connecting step of the method according to a variant of the invention.

[0049] In all these figures, the same or similar elements have the same or similar reference numerals. Detailed Implementation

[0050] This invention relates to a method for manufacturing such as Figure 1 The method shown is for cable 10.

[0051] The belt 10 includes a first eyelet 12a, a second eyelet 12b, and an elongated central body 14 extending longitudinally from the first eyelet 12a to the second eyelet 12b.

[0052] It should be noted that the cable 10 has a radially symmetrical midplane.

[0053] like Figure 2 As shown, the cable 10 includes a core 16 surrounded by a protective tubular sheath 18.

[0054] The core 16 of the cord 10 is formed by multiple yarns of the wire 20.

[0055] The term "thread" refers to a thread, strand, braid, chain, or any other type of link formed from continuous fibers of synthetic or natural materials.

[0056] According to a preferred embodiment of the invention, the wire 20 is made of polyethylene fiber, such as fiber known by the trade name Dyneema®.

[0057] Sheath 18 Figure 3 From left to right, it has a first end 22a, a first hole 24a, a first hole inter-part 26a, a second hole 28a, a central section 30, a third hole 28b, a second hole inter-part 26b, a fourth hole 24b, and a second end 22b.

[0058] "End" should be understood as the free end of the sheath 18 that remains free after the first loading step, as described later.

[0059] refer to Figure 3 The manufacturing method according to the present invention includes a first filling step.

[0060] The first loading step includes assembling the drive belt 32 into the sheath 18 such that the belt 32 forms a closed loop, which exits from the first hole 24a and the second hole 28a of the sheath 18 to form a first eyelet 12a, and exits from the third hole 28b and the fourth hole 24b of the sheath 18 to form a second eyelet 12b.

[0061] Still referencing Figure 3The belt 32 is tensioned between a first rotating element 34a extending through a first eyelet 12a according to a first rotation axis A and a second rotating element 34b extending through a second eyelet 12b according to a second rotation axis B.

[0062] It should be noted that the longitudinal axial spacing between the first rotating element 34a and the second rotating element 34b is adjustable to allow for adjustment of the length of the belt 10.

[0063] For this purpose, the belt 32 is formed of a chain link, which is manipulated such that, in sequence, the chain link is fitted into the sheath 18 through the third hole 28b, exits through the second hole 28a, surrounds the first rotating element 34a, is fitted back into the sheath 18 through the first hole 24a, exits from the sheath 18 through the fourth hole 24b, and then surrounds the second rotating element 34b.

[0064] The first loading step can be performed by means of a needle (not shown) that allows the belt 32 to be manually driven through the sheath 18 as previously described.

[0065] Once the belt 32 has been fitted into the sheath 18, the belt 32 closes itself, for example, through a knot or splice or any other type of connection.

[0066] refer to Figure 4 The method according to the invention includes a second connecting step performed after the first loading step, and includes connecting the coil 36 of the wire 20 to the tape 32 by means of attachment 38.

[0067] Roll 36 is rotatably mounted on its axis C so that it can be unrolled when the wire 20 is pulled.

[0068] Non-limiting, the roll 36 may be mounted on a motor drive shaft to facilitate its unfolding, and the roll 36 may also be associated with a brake that applies tension to the wire 20.

[0069] Annex 38 may be formed by knots, splices, adhesive dots, tapes or any other type of connection.

[0070] The second connection step of the method is followed by a third step of filling the sheath 18, which includes driving the belt 32 to rotate around the first rotating element 34a and the second rotating element 34b to unwind the wire 20 coil 36 and form the core 16 of the belt 10, as shown. Figure 5 and Figure 6 As shown.

[0071] Therefore, the first rotating element 34a is a driver rotating element suitable for driving the belt 32 to rotate.

[0072] Preferably, the first rotating element 34a is driven to rotate, for example, by an electric motor (not shown).

[0073] Each rotation performed by the belt 32 adds two strands to the core of the central body 14 of the belt 10 and adds one strand to the core 16 of the first eyelet 12a and the second eyelet 12b.

[0074] Thus, each new rotation of belt 32 increases the mechanical strength of belt 10.

[0075] At the end of the third filling step, refer to Figure 7 The portion of wire 20 connected to the roll 36 is cut off, and the attachment 38 connecting wire 20 to the belt 32 is separated, so that the wire 20 forming the core 16 of the belt 10 has two free ends.

[0076] These two free ends pass through Figure 8 The new attachment 39 shown in the example are connected together to close and form a loop of wire 20 for the core 16 of the cable 10.

[0077] The new Annex 39 may be formed by knots, splices, adhesive dots, tape or any other means of connection.

[0078] Furthermore, during the third filling step, the strip 32 removed from the wire 20 is removed from the sheath 18 so that only the core 16 formed by the wire 20 is retained in the sheath 18.

[0079] Furthermore, the method includes a fourth finishing step, which is performed after the third filling step and includes covering the core 16 of the first eyelet 12a and the second eyelet 12b with a sheath 18.

[0080] Therefore, refer to Figure 9 The fourth finishing step includes a first stage, which includes inserting the free end of the first end 22a into the sheath 18 through the second hole 28a, so as to cover the core 16 of the first hole 12a through the first hole portion 26a of the sheath 18.

[0081] The first end 22a is positioned by the sheath 18 to exit the sheath 18 through the first outlet 40a beyond the second hole 28a, and then the end of the first end 22a protruding from the sheath 18 is cut off.

[0082] Similarly, the fourth finishing step includes a second stage, which includes inserting the free end of the second end 22b into the sheath 18 through the third hole 28b of the sheath 18 so as to cover the core 16 of the second hole 12b through the second hole portion 26b of the sheath 18.

[0083] The second end 22b is positioned by the sheath 18 to exit the sheath 18 through the second outlet 40b beyond the third hole 28b, and then the end of the second end 22b protruding from the sheath 18 is cut off.

[0084] To prevent the sheath 18 from sliding on the core 16 of the cable 10, the fourth finishing step includes a third stitching stage, which includes performing a first stitch 42a or equivalent blocking means between the second hole 28a and the first outlet 40a of the sheath 18.

[0085] Similarly, the third suturing stage includes performing a second suturing 42b or an equivalent blocking means between the third hole 28b and the second outlet 40b of the sheath 18.

[0086] Therefore, after the fourth finishing step, the method according to the invention can obtain, for example... Figure 1 The cable 10 shown has a fully closed sheath 18.

[0087] according to Figure 10 and Figure 11 In an illustrative variation of the invention, the tape 32 is formed directly from the wire 20 of the coil 36, which is intended to form the core 16 of the tape 10.

[0088] Thus, according to this variation of the method, the first loading step includes manipulating the free end of the wire 20 such that the wire 20 is sequentially fitted into the sheath 18 through the third hole 28b, exits through the second hole 28a, surrounds the first rotating element 34a, is fitted back into the sheath 18 through the first hole 24a, exits through the fourth hole 24b, and then surrounds the second rotating element 34b.

[0089] Once the wire 20 has been inserted into the sheath 18, the wire 20 closes itself via the accessory 38 to form the band 32, as shown. Figure 11 As shown.

[0090] It should be understood that, according to this variant, the second connection step, including connecting the coil 36 of wire 20 to the tape 32, is no longer necessary.

[0091] Finally, this variant includes the same third and fourth finishing steps for the filling sheath 18 as the aforementioned third and fourth steps.

[0092] In particular, the method according to the invention allows for the mechanized filling of the sheath 18 to form the core of the cord 10 in the third step, which achieves a significant reduction in manufacturing time compared to methods in which the filling step is performed manually.

[0093] In fact, the filling of the sheath 18 is performed by driving the belt 32, which can be motorized or automated.

[0094] Thus, the method according to the present invention reduces the duration of human intervention.

[0095] Furthermore, the method according to the invention allows for the manufacture of the aforementioned type of cable 10 on an industrial scale.

[0096] Of course, the present invention has been described above as an example. It should be understood that those skilled in the art can implement different modifications of the invention without departing from its scope.

Claims

1. A method for manufacturing a cord (10), the cord comprising a first eyelet (12a), a second eyelet (12b), and an elongated central body (14) extending from the first eyelet (12a) to the second eyelet (12b), the cord (10) comprising a core (16) surrounded by a protective tubular sheath (18), the protective tubular sheath having, in sequence, a first end (22a), a first hole (24a), a first hole portion (26a), a second hole (28a), a central segment (30), a third hole (28b), a second hole portion (26b), a fourth hole (24b), and a second end (22b), the method being characterized in that it comprises at least: • The first filling step includes fitting a strip (32) or wire (20) into the sheath (18) such that the strip (32) or wire (20) forms a closed loop, the closed loop protruding from the first hole (24a) and the second hole (28a) of the sheath (18) to form the first eyelet (12a), and protruding from the third hole (28b) and the fourth hole (24b) of the sheath (18) to form the second eyelet (12b). • The second connection step includes connecting the coil (36) of the wire (20) to the tape (32) by means of the first attachment (38), or closing the wire (20) itself by means of the first attachment (38); and • The third step of filling the sheath (18) includes driving the belt (32) to rotate to unwind the coil (36) of the wire (20) or the wire (20) to form the core (16) of the cord (10).

2. The method for manufacturing a belt (10) according to claim 1, characterized in that, At the end of the third step, the wire (20) connected to the roll (36) is cut off, and the first attachment (38) that connects the wire (20) to the belt (32) is separated, such that the wire (20) forming the core (16) of the belt (10) has two free ends connected together by the second attachment (39).

3. The method for manufacturing a belt (10) according to any one of the preceding claims, characterized in that, The method includes a fourth finishing step, performed after the third step, and includes: a first stage comprising inserting the free end of the first end (22a) through the second hole (28a) into the sheath (18) to cover the core of the first eyelet (12a) with the first hole portion (26a) of the sheath (18); and a second stage comprising inserting the free end of the second end (22b) through the third hole (28b) into the sheath (18) to cover the core of the second eyelet (12b) with the second hole portion (26b) of the sheath (18).

4. The method for manufacturing the belt cord (10) according to claim 3, characterized in that, The fourth finishing step includes: a third stage, which includes extending the first end (22a) out of the sheath (18) beyond the second hole (28a) and cutting off the portion of the first end (22a) protruding from the sheath (18); and a fourth stage, which includes extending the second end (22b) out of the sheath (18) beyond the third hole (28b) and cutting off the portion of the second end (22b) protruding from the sheath (18).

5. The method for manufacturing a belt cord (10) according to claim 1, characterized in that, The belt (32) is tensioned between a first rotating element (34a) extending through the first eyelet (12a) and a second rotating element (34b) extending through the second eyelet (12b), at least one of the two rotating elements (34a, 34b) being a driver rotating element adapted to drive the belt (32) to rotate during the third step of the method.

6. The method for manufacturing a belt cord (10) according to claim 5, characterized in that, The axial spacing between the first rotating element (34a) and the second rotating element (34b) is adjustable to allow for adjustment of the length of the cable (10).

7. The method for manufacturing a belt cord (10) according to claim 1, characterized in that, The wire (20) forming the core (16) of the band (10) is made of continuous fibers.

8. The method for manufacturing a belt cord (10) according to claim 1, characterized in that, The wire (20) forming the core (16) of the cord (10) is composed of multiple strands.

9. The method for manufacturing a belt according to claim 1, characterized in that, The wire (20) forming the core (16) of the cord (10) is composed of multiple wires forming a braid.

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