Torsion arm assembly for cord manufacturing machine and cord manufacturing machine for combining plurality of wires

Abstract

The utility model provides a torsion arm assembly for a cord thread manufacturing machine. The cord thread manufacturing machine is used for combining a plurality of wire rods. The torsion arm assembly includes a base for coupling the torsion arm assembly to a torsion shaft of the cord manufacturing machine and at least one torsion arm for attaching a flywheel ring for guiding rotation of at least one wire and / or cord about a main axis of the cord manufacturing machine, the at least one torsion arm extending outwardly from the base, the torsion arm includes an arm body and a clamping member attached to the arm body to clamp an end of the flywheel ring.

Description

Technical Field

[0001] This utility model relates to the field of cord manufacturing machines. In particular, this utility model relates to a torsion arm assembly for a cord manufacturing machine. Background Technology

[0002] Cord-making machines (e.g., cabling machines, bundling machines, or twisting machines) can be used to combine multiple strands (e.g., metal wires or yarns) to form cords. The characteristics of the cords formed by cord-making machines depend on the material and diameter of the strands, and also on the construction of their combination.

[0003] In the prior art, cord manufacturing machines may include flywheel rings and sometimes torsion discs or torsion arms to guide at least one of a plurality of wires to be assembled while rotating about the main axis of the cord manufacturing machine. This rotation can twist the wires about their own axis, and / or, when the plurality of wires to be assembled are guided by the flywheel ring, torsion disc, or torsion arm, can twist the wires together to form a cord. The specific construction of the cord by twisting the wires affects a variety of cord properties, such as the cord's flexibility and breaking load. An example of a cord manufacturing machine is described in US4570428.

[0004] A "flywheel ring" is an arc-shaped blade that physically guides the wire through eyelets mounted on thin blades, from one torsion arm to another, and the eyelets on the flywheel ring form a track or path for guiding the wire. The wire can enter the flywheel ring at one torsion arm and be guided by the flywheel ring to the opposite torsion arm. An example of a flywheel ring is described in JP2010106392. The flywheel ring rotates at a high speed in the machine, thus generating air turbulence. Energy is therefore lost.

[0005] The flywheel ring or torsion arm in a cord manufacturing machine can rotate at speeds up to 6000 revolutions per minute, corresponding to the circumferential speed of the flywheel ring. At this high speed, the air resistance experienced by the torsion disc or torsion arm has a significant impact on the power consumption of the cord manufacturing machine. Furthermore, the high speed places high demands on the strength of the materials used in the torsion arm.

[0006] Further optimization of the torsion arm is needed to reduce the power consumption of the cord manufacturing machine. Utility Model Content

[0007] The purpose of this invention is to provide an improved torsion arm assembly.

[0008] Another objective of this invention is to provide an improved cord manufacturing machine including the aforementioned torsion arm assembly.

[0009] In a first objective, a torsion arm assembly is provided for a cord manufacturing machine for assembling multiple cords. The torsion arm assembly includes a base for connecting the torsion arm assembly to a torsion shaft of the cord manufacturing machine and at least one torsion arm for attaching a flywheel ring for guiding at least one cord and / or cord to rotate about the main axis of the cord manufacturing machine. The at least one torsion arm extends outward from the base and includes an arm body and at least one clamping member attached to the arm body to clamp an end of the flywheel ring.

[0010] This invention provides a torsion arm assembly on which the flywheel ring can be easily and stably mounted. Furthermore, compared to the heavy and thick torsion discs of the prior art, the torsion arm assembly of this invention is lighter, thus offering advantages in energy saving and overall energy efficiency.

[0011] The main axis ('main axis') of a cord manufacturing machine is the axis around which the torsion arm rotates when it is connected to the torsion shaft (i.e., bearing) of the cord manufacturing machine, or in other words, the axis of rotation of the torsion arm. The main axis may also be referred to as the axis of rotation, torque axis, or torsion axis. Although a cord manufacturing machine may in principle include a physical axis that coincides with the main axis, i.e., the material axis, this is usually not the case.

[0012] A "torsion arm" is a component similar to an arm. The torsion arm is connected to the base of the torsion arm assembly and extends outward from the base. The torsion arm has a certain length, referring to the distance along the main axis, such as 70-120mm or 75-110mm, to ensure stable clamping of the flywheel ring end.

[0013] The 'clamping component' is a part of the torsion arm used to clamp the flywheel ring, particularly its ends. When the torsion arm assembly is installed in the cord manufacturing machine, the ends of the flywheel ring are clamped by the torsion arm. During use of the torsion arm assembly, the torsion arm rotates about the main axis of the cord manufacturing machine, and the rotation of the torsion arm drives the flywheel ring to rotate about the main axis of the cord manufacturing machine, while at least one wire and / or cord is guided forward and rotates about the main axis of the cord manufacturing machine.

[0014] Preferably, the clamping member is positioned on the side of the torsion arm facing the base. Alternatively, the clamping member is positioned on the side of the torsion arm away from the base.

[0015] The clamping components can be attached or secured to every possible location on the arm body of the torsion arm using any existing means. Preferably, the clamping components are attached to the arm body by 4 to 8 steel bolts, for example, 6 steel bolts.

[0016] The clamping component can be designed in any shape suitable for production. Preferably, the clamping component has a shape in which the width varies along its length, and the portion of the clamping component for receiving the steel bolt has the maximum width. This minimizes the space occupied by the clamping component while providing sufficient clamping strength, and it also has the advantage of reducing the risk of the clamping component flying out during the rotation of the torsion arm. The 'length direction of the clamping component' coincides with the axis of the torsion arm.

[0017] In a preferred embodiment, one, two, or more grooves are provided on the side of the clamping member facing the arm body to receive wires and / or cords. In this case, the space formed by the grooves is part of a cavity.

[0018] The flywheel ring end can be positioned against the clamping member in any known manner. Preferably, the clamping member is configured with 3 to 6 pins, such as 4 pins, to position the flywheel ring end. More pins provide more stable positioning.

[0019] In various embodiments, the cord manufacturing machine can be a cabling machine, a bundling machine, or a twisting machine. The wire can be of any type, such as metal wire or yarn (which can be formed from synthetic or natural fibers). In various embodiments, the cord can comprise a bundle of wire, such as a cable, a bundle, or strands. However, this design is most preferably used for steel wire cord manufacturing machines. Steel wire cord is a cord comprising one or more steel wires and is suitable for reinforcing rubber products, such as rubber tires, rubber belts, or rubber hoses.

[0020] In various preferred embodiments, the clamping component and the arm body are complementaryly integrated, resulting in a smooth outer surface for the torsion arm, particularly at the portion of the torsion arm where the clamping component and arm body are integrated. A 'smooth outer surface' means there are no protrusions on the outer surface. The complementary integration of the clamping component and the arm body means that the outer surface of the torsion arm is very smooth, without any protrusions. While there may be very small gaps at the joint between the clamping component and the arm body, caused by the connection between the clamping component and the arm body and which cannot be eliminated, there are no protrusions on the outer surface of the torsion arm, particularly at the portion of the torsion arm where the clamping component and arm body are integrated. The smooth outer surface of the torsion arm without protrusions provides the advantage of good aerodynamic design. Therefore, the advantages of this invention are that the air resistance experienced by the rotating torsion arm can be lower, and the power consumption of the cord manufacturing machine including the torsion arm assembly can be lower.

[0021] In several preferred embodiments, a cavity is provided within the torsion arm for receiving the end of the flywheel ring. The cavity is formed by integration of a clamping member with the arm body. The cavity is located inside the torsion arm and has an opening at the distal end of the torsion arm, connecting to the outside of the torsion arm, serving as an inlet to allow the end of the flywheel ring to enter the cavity. Using this cavity, the end of the flywheel ring can enter the interior of the torsion arm, thereby being clamped and held more stably.

[0022] Preferably, the torsion arm has one or two or more through holes for receiving and positioning wires and / or cords, and each through hole is located within the arm body. For each through hole, one end is connected to a cavity and the other end is connected to the outside of the torsion arm, so that the wires and / or cords can be guided through the cavity and the interior of the arm body. This means that during cord manufacturing, the wires and / or cords pass through the interior of the torsion arm, thus reducing the exposure of the wires and / or cords to the outside of the torsion arm. The air resistance experienced by the wires and cords can be further reduced, and the power consumption of the cord manufacturing machine can be further reduced. As one embodiment, a guide member is disposed within the arm body, adjacent to the clamping member, and is configured with one or two or more through holes for receiving and guiding wires and / or cords. For each through hole, one end is connected to a cavity, specifically to the end of a groove in the clamping member, and the other end is connected to the outside of the torsion arm. Alternatively, at least one through hole is provided inside a section of the clamping member that extends through the arm body, i.e., from the end of the cavity opposite to its opening to the outside of the arm body.

[0023] Preferably, the clamping member is configured with at least one flywheel ring damping component, and the at least one flywheel ring damping component is positioned near the opening of the cavity. The flywheel ring damping component is used to reduce vibration between the flywheel ring and the torsion arm during rotation. The flywheel ring damping component may be made of rubber. Preferably, the flywheel ring damping component has a shape that matches the shape of the end of the flywheel ring.

[0024] Preferably, for better wear resistance, a wear-resistant component made of a hard alloy such as tungsten carbide is attached to the flywheel ring damping component. The wear-resistant component has one, two, or more holes for receiving and positioning the wire and / or cord to be guided.

[0025] In several preferred embodiments, the torsion arm includes, on at least a portion of the torsion arm, a first raised surface facing away from the base and a second raised surface facing the base. The first raised surface has a first radius of curvature, and the second raised surface has a second radius of curvature, wherein the second radius of curvature is greater than the first radius of curvature. The ratio of the second radius of curvature to the first radius of curvature is greater than 2 and less than 5, more preferably between 2.5 and 4.5, for example, 3.5. The torsion arm assembly, when mounted and used in a cord manufacturing machine, does not move linearly but rotates about the main axis of the cord manufacturing machine. Therefore, when the first and second radii of curvature are equal, a lifting force is applied to the torsion arm in a radial direction toward the main axis. When the second radius of curvature is greater than the first radius of curvature, this lifting force can be reduced. Preferably, the first and second radii are selected such that substantially zero lifting force is applied to the torsion arm during rotation. Preferably, at least a portion of the torsion arm is at least the distal end of the torsion arm, for example, extending from the distal end of the torsion arm, because this is the part of the torsion arm with the greatest rotational speed, and therefore the lifting force may become particularly large.

[0026] In a preferred embodiment, the torsion arm assembly has a single torsion arm. Because there is only a single torsion arm, a single flywheel ring can be attached to the torsion arm assembly, and this single flywheel ring is configured with at least two tracks, including one track for guiding the wire and another track for guiding the cord. This significantly reduces the weight of the torsion arm assembly, and therefore greatly reduces the energy and power consumption of the cord manufacturing machine.

[0027] Alternatively, the torsion arm assembly may include two torsion arms, which are typically located on radially opposite sides of the main axis of the cord manufacturing machine when installed in the cord manufacturing machine. In yet another embodiment, the torsion arm assembly may include more than two torsion arms, such as three, four, or even more, which may be evenly distributed around the main axis of the cord manufacturing machine when installed in the cord manufacturing machine.

[0028] In various embodiments, the torsion arm assembly may include a torsion arm and one or more counterweights, wherein the torsion arm assembly and the one or more counterweights, when installed in a cord manufacturing machine, are typically located on radially opposite sides of the main axis of the cord manufacturing machine. Preferably, the torsion arm assembly includes 1-6 counterweights constructed in the base of the torsion arm assembly; in other words, the base is configured with 1-6 counterweights. Preferably, each counterweight is received and secured in a separate recess in the base of the torsion arm assembly. Each counterweight is preferably a steel insert. Inserts made of steel can provide sufficient weight.

[0029] In various embodiments, the material of the arm body and / or base is selected from the group consisting of aluminum, aluminum alloys, titanium, titanium alloys, carbon-reinforced composites, glass fiber-reinforced composites, laminated wood, ferroalloys (e.g., ductile iron), or steel (e.g., medium-carbon or high-carbon steel), or combinations thereof. These materials can combine sufficient strength with light weight. Preferably, the arm body and / or base comprises aluminum or an aluminum alloy, such as AlZnMgCu1.5. Aluminum is particularly lightweight, resulting in a lightweight torsion arm assembly. Alternatively, the arm body and / or base may comprise a polymer, such as a carbon fiber-reinforced polymer.

[0030] In various embodiments, the angle between the extension direction of the torsion arm and the main axis is 30° to 70°, preferably 35° to 60°, and more preferably 40° to 55°. According to a side view of the torsion arm assembly, the term 'extension direction of the torsion arm' is determined by the outermost straight line on the torsion arm surface facing away from the base. This angle range provides an optimal volume-to-axial length ratio for the desired speed and tension. This angle is smaller than the angle desired for a rotating rope when the maximum volume is limited to 71.0°, an angle typically used when the wire guide is a torsion disc. Here, 'axial length' refers to the distance along the main axis between torsion arm assemblies.

[0031] In various embodiments, the area of ​​the cross-section of the torsion arm perpendicular to its axis decreases from the central portion of the torsion arm toward the distal end of the torsion arm away from the central portion. The advantage of these embodiments is that the torsion arm can be particularly robust and strong near the location where the torsion arm assembly is fixed to the torsion shaft, which is typically the location where the centrifugal force exerted on the torsion arm due to its rotation is greatest, while the torsion arm can have a lighter weight away from this location, thereby reducing or even minimizing the centrifugal force exerted on the torsion arm during rotation.

[0032] In a preferred embodiment, the base is provided with a plurality of holes to connect and position the torsion arm assembly on the torsion shaft of the cord manufacturing machine.

[0033] The base can be a thin annular plate with multiple holes for connecting and positioning the torsion arm assembly on the torsion shaft of the cord manufacturing machine. This thin annular plate can have a thickness between 20 mm and 50 mm, for example, 20 to 40 mm, where 'plate thickness' is measured at the thickest part of the plate. The annular plate is much thinner than existing torsion discs without torsion arms. As a result, the torsion arm assembly is lighter, and the energy and power consumption of the cord manufacturing machine is reduced.

[0034] Preferably, the annular plate has a smooth, elliptical curved edge on the side of the annular plate that is radially opposite to the torsion arm relative to the main axis of the cord manufacturing machine. The design of the elliptical curved side provides a counterweight effect. In addition, this smooth elliptical curved edge brings the advantage of good aerodynamic design, and it also reduces the air resistance experienced by the rotating torsion arm assembly, thereby saving energy.

[0035] In a second objective, a cord manufacturing machine for combining multiple cords is provided, the cord manufacturing machine comprising:

[0036] - A first torsion shaft coaxial with the main axis of the cord manufacturing machine, and

[0037] - A first torsion arm assembly according to a first aspect of the present invention, the first torsion arm assembly being coupled to a first torsion shaft, and

[0038] - A second torsion shaft coaxial with the main axis of the cord manufacturing machine, and

[0039] - A second torsion arm assembly according to an embodiment of the first aspect of the present invention, and

[0040] - At least one flywheel ring, wherein one end of the flywheel ring is attached to a first torsion arm assembly, and the other end of the flywheel ring is attached to a second torsion arm assembly, and

[0041] - A drive device for synchronously driving the first and second torsion shafts.

[0042] Typically, the torsion arm of the first torsion arm assembly and the torsion arm of the second torsion arm assembly are located in the same plane, wherein the distal ends of the torsion arms of the first torsion arm assembly and the distal ends of the torsion arms of the second torsion arm assembly face each other, i.e., they are located in each other's extensions.

[0043] The cord manufacturing machine of this invention can be used to manufacture cords, ropes, and cables, such as steel wire cords or synthetic cords for reinforcing rubber products. The cord manufacturing machine can also be used to manufacture twisted wires or cords. Attached Figure Description

[0044] Figure 1A , 1B 1C and 1C are schematic representations of different perspective views of a torsion arm assembly according to various embodiments of the present invention.

[0045] Figure 2A This is a schematic representation of the front view of a clamping component according to various embodiments of the present invention. Figure 2B This is a schematic representation of a front view of a guide component according to various embodiments of the present invention.

[0046] Figure 3 This is a schematic representation of a cross-sectional view of a torsion arm assembly according to various embodiments of the present invention.

[0047] Figure 4 This is a schematic representation of a cross-sectional view of a torsion arm according to various embodiments of the present invention.

[0048] Figure 5 This is a schematic representation of the front view of the cord manufacturing machine of this utility model. Detailed Implementation

[0049] The cord manufacturing machine according to various embodiments of the present invention allows for the formation of cords of any type. Examples of cords known in the prior art and that can be formed using the cord manufacturing machine according to various embodiments of the present invention are briefly described below. However, these examples should be understood as non-limiting, and different cords may also be formed.

[0050] Wire is a long element whose length is much greater than its width and height or diameter. Wire can be filament or strand. A filament is a wire element that cannot be further subdivided into even finer components. For example, filaments of steel wire are often used as individual elements in strands or cords. The standard filament diameter for steel cords used in tire reinforcement can range from 0.10 to 0.55 mm, for example, 0.15 mm, 0.175 mm, 0.20 mm, 0.22 mm, 0.25 mm, 0.27 mm, 0.28 mm, 0.35 mm, and 0.38 mm.

[0051] A strand is a group of fine filaments bound together. In this context, a strand comprises multiple filaments, each individually twisted around the center of the strand. Strands can be bundled or cabled. In a cabled strand, each filament is not twisted around its own axis. Conversely, in a bundled strand, each filament is subjected to the same degree of twist as the strand. The filaments are bent and twisted. Thus, each filament is twisted around its axis at the same speed as the strand.

[0052] Cords are structures composed of a single filament (e.g., a monofilament) or two or more filaments (e.g., 1×2, 1×3, 1×4, 1×5, 2+2, or 1+6), or combinations of strands (e.g., 3×4, 7×4), or combinations of filaments and strands (e.g., 1+5×7). Cords may further include an outer winding, i.e., a wire spirally wound around other wires in the cord. The filaments of the cord may be made of steel or synthetic materials such as nylon.

[0053] In this art, cord is generally used to refer to the final product, although it may be structurally indistinguishable from strands. Therefore, throughout this specification, unless otherwise stated, cord can be understood to refer to a product consisting of any combination of two or more filaments or a single filament.

[0054] Reference Figure 1A-1C , Figure 1A-1C These are schematic representations of three different perspective views of an example of a torsion arm assembly for combining multiple wires in a cord manufacturing machine according to an embodiment of the present invention. The torsion arm assembly 100 has a base 115 and a single torsion arm 150 for rotatably guiding a steel wire and a steel wire cord about the main axis of the cord manufacturing machine. The torsion arm 150 has an arm body 105 and a clamping member 110. The torsion arm assembly 100 also includes hole devices, such as holes 125, for receiving and coupling the base 115 to the torsion shaft of the cord manufacturing machine. The base 115 of the torsion arm assembly 100 also includes six holes 130 and two holes 135 for receiving fasteners, such as bolts, thereby securing the torsion arm assembly 100 to the torsion shaft of the cord manufacturing machine. The base 115 is an annular plate, according to... Figure 1B The side view shown is measured at its thickest part, which is 20-50 mm thick, for example 28 mm. The annular plate 115 has a smooth, elliptical curved edge on the side of the annular plate 115 that is radially opposite to the torsion arm 150 relative to the main axis of the cord manufacturing machine.

[0055] In the illustrated example, the rotation axis 140 of the torsion arm assembly 100 passes through the center of the hole 125. When the torsion arm assembly 100 is coupled to the torsion shaft of the cord manufacturing machine, the rotation axis 140 coincides with the main axis of the cord manufacturing machine. Thus, when the torsion shaft to which the torsion arm assembly 100 is coupled is caused to rotate, the torsion arm assembly 100 is also caused to rotate about the rotation axis 140. Therefore, the main axis of the cord manufacturing machine is the same as the rotation axis of the torsion arm assembly according to the present invention.

[0056] In the example shown, the torsion arm assembly 100 includes only a single torsion arm 150. The torsion arm assembly 100 also includes counterweights 120, 120' to counteract the centrifugal force acting on the torsion arm 150 during rotation about the axis of rotation 140. These counterweights 120, 120' are positioned relative to the axis of rotation 140 on a side radially opposite to the torsion arm 150. In the example shown, the counterweights 120, 120' are six inserts, each received in a separate recess in the base 115 of the torsion arm assembly 100. The six inserts 120, 120' are made of steel to provide sufficient weight to resist centrifugal forces. Furthermore, the insert form of the counterweights 120, 120' facilitates precise installation, which is particularly important because the high rotational rates achievable by the torsion arm assembly 100 can generate large centrifugal forces. The steel insert form of the counterweights 120, 120' also facilitates easy installation, saving labor costs.

[0057] The clamping member 110 is configured with at least one pin or at least three pins, such as four pins 205, as shown. Figure 2A As shown, it is designed to engage with the end of the flywheel ring to position the end of the flywheel ring. Two grooves 220 are provided on the side of the clamping member 110 facing the arm body 105, each groove 220 being used to receive wire or cord.

[0058] The clamping component 110 is attached to the arm body 105 by six steel bolts 145. By fastening the steel bolts 145 to secure the clamping component 110 to the arm body 105, the end of the flywheel ring can be clamped.

[0059] The clamping member 110 is shaped to be substantially complementary to the outer surface of the arm body 105, such that the clamping member 110 can be received in the arm body 105 in a mating manner. In other words, the clamping member 110 is complementaryly integrated with the arm body 105, so that the torsion arm 150 has a smooth outer surface. 'Smooth outer surface' means that there are no protrusions on the outer surface of the torsion arm 150. Figure 1A , 1C As shown, the clamping member 110 is positioned on the side of the torsion arm facing the base 115, and the portion of the clamping member 110 for receiving the steel bolt 145 has a maximum width. The 'width' is determined by the maximum width of the cross-section of the clamping member 110 perpendicular to the axis of the torsion arm 150, i.e., as shown... Figure 4 The 'W' shown.

[0060] like Figure 3 and Figure 4As shown, cavity 305 is formed within torsion arm 150 through integration of clamping member 110 with arm body 105. Cavity 305 is used to receive the end of flywheel ring and the steel wire and steel wire cord guided by the flywheel ring, such that the end of the flywheel ring can be clamped within torsion arm 150. Cavity 305 has an opening 310 at the distal end of torsion arm 150, serving as an inlet for the end of the flywheel ring to enter into cavity 305 and the interior of torsion arm 150. As an optimized solution, cavity 305 is large enough to accommodate the end of the flywheel ring and the reception of the steel wire and steel wire cord guided by the flywheel ring, such as... Figure 3 and Figure 4 As shown, the clamping component 110 and the arm body 105 are accordingly designed to form such a cavity 305. The length of the cavity 305 depends on the length of the end of the flywheel ring that enters the cavity 305.

[0061] As shown in Figure 1, two through holes 160 are provided within the arm body 105 to receive wire and cord, respectively. In this example, as... Figure 2B As shown, a guide member 210 is disposed inside the arm body 105, next to the clamping member 110. Two through holes 160 are disposed inside and pass through the guide member 210. For each through hole 160, one end is connected to the cavity 305, specifically the end of the groove 220, so that the groove 220 on the clamping member 110 and the through hole 160 can be connected, and the connection of the groove 220 and the through hole 160 forms two channels to guide wires and / or cords through the interior of the torsion arm 150; while the other end of the through hole 160 is connected to the outside of the torsion arm 150, and this allows wires or cords to enter or exit the torsion arm.

[0062] Because of the cavity 305 and the through hole 160, the wires and cords cannot be freely exposed and are covered in the high-speed torsion arm assembly 100, resulting in a significant reduction in resistance.

[0063] As shown in Figure 2 and Figure 3 As shown, the clamping member 110 is configured with a rubber flywheel ring damping member 215, which is located near the opening 310 of the cavity 305 to reduce vibration between the flywheel ring and the torsion arm 150 during rotation of the flywheel ring and torsion arm assembly 100. A wear-resistant member made of tungsten carbide (located inside the flywheel ring damping member and therefore not shown in the figure) is attached to the flywheel ring damping member 215. The wear-resistant member has two holes for receiving and positioning wires and / or cords into the interior of the torsion arm 150. The shape of the flywheel ring damping member 215 conforms to the shape of the cavity 305, the shape of the end of the flywheel ring, and the shape of the wear-resistant member.

[0064] like Figure 1BAs shown, the angle α between the rotation axis 140 and the extension direction of the torsion arm 150 can be from 30° to 70°. According to the side view of the torsion arm assembly 100, the 'extension direction of the torsion arm' is determined by the outermost straight line on the torsion arm surface facing away from the base 115. Most preferably, in the example shown, this angle is 45°. This angle provides optimal volume constrained and enclosed by the rotating cord. For a given stress in the cord, a smaller angle will allow for higher speeds but provide a smaller volume for mounting the reel. A larger angle will result in a larger volume, but the tension in the cord limits the maximum rotational speed.

[0065] like Figure 1C As shown, the width of the torsion arm 150, or correspondingly, as Figure 4 As shown, the area of ​​the cross section of the torsion arm 150 perpendicular to the axis of the torsion arm 150 decreases from the center portion of the torsion arm 150 toward the far end of the torsion arm 150.

[0066] like Figure 3 As shown, each of the counterweights 120 and 120' is received in a separate recess, and the counterweights 120 and 120' are separated from each other by a wall. This configuration facilitates the fastening of the counterweights 120 and 120' to the base 115 by fasteners (e.g., bolts or screws) passing through, for example, the counterweight 120, the wall, and the other counterweight 120'. However, this method of fastening the counterweights 120 and 120' does not limit the present invention, and other methods of fastening the counterweights 120 and 120' in the recess can be used.

[0067] See Figure 4 , Figure 4 This is a cross-section of the torsion arm 150 perpendicular to its axis. The torsion arm 150 includes a first raised surface 405 and a second raised surface 410 above at least a portion of the arm body 105. The first raised surface 405 has a first radius of curvature facing away from the base 115 (i.e., facing away from the main axis of the cord manufacturing machine when the torsion arm is connected to the torsion shaft), and the second raised surface 410 has a second radius of curvature facing the base 115 (i.e., facing the main axis of the cord manufacturing machine when the torsion arm is connected to the torsion shaft), wherein the second radius of curvature is greater than the first radius of curvature. When rotated, the torsion arm 150 moves along a curved dotted line. When the first and second radii of curvature are the same, the torsion arm 150 will function as a propeller or aircraft wing, and due to the curvature of the path taken by the torsion arm 150, a lifting force is generated in the radial direction toward the main axis of the cord manufacturing machine. However, since the second radius of curvature is greater than the first radius of curvature, this lifting force can be reduced.

[0068] like Figure 5As shown, the cord manufacturing machine 500 has two torsion arm assemblies 100, 100' and a flywheel ring 515. The flywheel ring 515 is an arcuate blade, and at each end of the flywheel ring 515 is constructed four holes that cooperate with pins 205 of the clamping member 110 of the torsion arm assemblies 100, 100' to position the ends of the flywheel ring 515 within the torsion arms of the torsion arm assemblies 100, 100'. The flywheel ring 515 has two tracks; as an example, one track is used to receive and guide the cord, and the other track is used to receive and guide the cord. The cord manufacturing machine 500 has two torsion shafts, each for connecting one of the torsion arm assemblies 100, 100', a motor for driving both torsion shafts, a frame cover, and some other known and necessary components, although these components are... Figure 5 Not shown in the image.

[0069] One example is using a cord manufacturing machine 500 to manufacture 1×2 steel wire cords, with a spool 520 for releasing the first steel filament 525 placed inside the cord manufacturing machine 500, a spool 530 for releasing the second steel filament 535 placed outside the cord manufacturing machine 500, and a spool 540 for winding the steel wire cord 545 placed outside the cord manufacturing machine 500.

[0070] The second steel wire 535 is released from the second reel 530 and passes through the first reversing pulley 550, then through the torsion arm assembly 100' (i.e., enters the torsion arm through the opening of a through hole and exits the torsion arm assembly 100' through the opening of the cavity of the torsion arm assembly 100'), then through the flywheel ring 515, then through the torsion arm assembly 100 (i.e., enters the torsion arm through the opening of the cavity and exits the torsion arm assembly 100 through the opening of a through hole), then through the second reversing pulley 565, and then merges with the first steel wire 525 released from the first reel 520 at the cabling mold 575. After the cabling mold 575, the steel wire cord 545 is formed and guided through the third reversing pulley 560, then through the torsion arm assembly 100' (i.e., entering the torsion arm through the opening of the second through hole 160 and exiting the torsion arm through the opening of the cavity of the torsion arm assembly 100'), then through the flywheel ring 515, then through the torsion arm assembly 100 (i.e., entering the torsion arm through the opening of the cavity and exiting the torsion arm through the opening of the second through hole of the torsion arm assembly 100), and then through the fourth reversing pulley 570, and finally wound onto the reel 540.

[0071] Because the torsion arm assembly of this invention is lighter and has reduced air resistance, power consumption can be significantly reduced compared to torsion arms or discs using existing technology. Specifically, compared to discs using existing technology, a gain of at least 3% is achieved in terms of energy consumption, i.e., a reduction of at least 3% in energy consumption. Lower energy consumption results in less electricity consumption and thus reduces greenhouse gas emissions. This invention provides a lighter torsion arm assembly with the advantages of energy saving and conserving energy resources.

Claims

1. A torsion arm assembly for a cord manufacturing machine, the cord manufacturing machine being used to combine multiple cords, the torsion arm assembly comprising a base for connecting the torsion arm assembly to a torsion shaft of the cord manufacturing machine and at least one torsion arm for attaching a flywheel ring for guiding at least one cord and / or cord to rotate about a main axis of the cord manufacturing machine, the at least one torsion arm extending outward from the base, characterized in that, The torsion arm includes an arm body and at least one clamping member attached to the arm body to clamp the end of the flywheel ring.

2. The torsion arm assembly according to claim 1, characterized in that, The clamping component is integrated complementaryly with the arm body, so that the torsion arm has a smooth outer surface without protrusions.

3. The torsion arm assembly according to claim 1, characterized in that, The torsion arm includes a first raised surface facing away from the base and a second raised surface facing the base on at least a portion of the torsion arm. The first raised surface has a first radius of curvature, and the second raised surface has a second radius of curvature. The ratio of the second radius of curvature to the first radius of curvature is between 2.5 and 4.

5.

4. The torsion arm assembly according to claim 1, characterized in that, The clamping component is positioned on the side of the torsion arm facing the base.

5. The torsion arm assembly according to claim 1, characterized in that, A cavity is formed within the torsion arm by integrating the clamping member with the arm body to receive the end of the flywheel ring. The cavity has an opening at the distal end of the torsion arm to serve as an inlet for the end of the flywheel ring to enter the cavity.

6. The torsion arm assembly according to claim 5, characterized in that, The clamping member is configured with at least one flywheel ring damping member, the at least one flywheel ring damping member being positioned near the opening of the cavity, and a wear-resistant member being attached to the flywheel ring damping member, wherein the wear-resistant member has one or two or more holes for receiving and positioning the wire and / or cord.

7. The torsion arm assembly according to claim 5, characterized in that, One, two or more grooves are provided on the side of the clamping member facing the arm body to receive the wire and / or cord.

8. The torsion arm assembly according to claim 5, characterized in that, A guide member is disposed within the arm body and is located next to the clamping member. The guide member is configured with one, two or more through holes to receive and guide the wire and / or cord. For each through hole, one end is connected to the cavity and the other end is connected to the outside of the torsion arm.

9. The torsion arm assembly according to claim 1, characterized in that, The clamping component is attached to the arm body by 4 to 8 steel bolts.

10. The torsion arm assembly according to claim 9, characterized in that, The portion of the clamping member used to receive the steel bolt has a maximum width.

11. The torsion arm assembly according to claim 1, characterized in that, The angle between the extension direction of the torsion arm and the main axis of the cord manufacturing machine is 35° to 60°.

12. The torsion arm assembly according to claim 1, characterized in that, The clamping component is configured with 3 to 6 pins to position the end of the flywheel ring.

13. The torsion arm assembly according to any one of claims 1 to 12, characterized in that, The base is an annular plate, which has a plurality of holes for connecting and positioning the torsion arm assembly on the torsion shaft of the cord manufacturing machine. The annular plate has a smooth elliptical curved edge on the side of the annular plate that is radially opposite to the torsion arm relative to the main axis of the cord manufacturing machine, and the annular plate has a thickness between 20 mm and 50 mm.

14. The torsion arm assembly according to any one of claims 1 to 12, characterized in that, The base is constructed with 1 to 6 counterweights, each counterweight being received and fixed in a separate recess of the base, and each counterweight being a steel insert.

15. The torsion arm assembly according to any one of claims 1 to 12, characterized in that, The torsion arm assembly has two torsion arms.

16. A cord manufacturing machine for combining multiple cords, comprising: A first torsion shaft coaxial with the main axis of the cord manufacturing machine; The torsion arm assembly according to any one of claims 1 to 15 is a first torsion arm assembly connected to the first torsion shaft; and a second torsion shaft coaxial with the main axis of the cord manufacturing machine; The torsion arm assembly according to any one of claims 1 to 15, wherein the torsion arm assembly is a second torsion arm assembly; at least one flywheel ring, wherein one end of the flywheel ring is attached to the first torsion arm assembly and the other end of the flywheel ring is attached to the second torsion arm assembly; and a drive device for synchronously driving the first torsion shaft and the second torsion shaft.

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