Roping device and roping process for 3x1 structure cords

Abstract

The application discloses a 3x1 structure cord forming device and a cord forming process, which comprises a supporting structure, a base, an L-shaped vertical plate, a rope passing hole, a first wire passing guide wheel, a second wire passing guide wheel, a first pre-deformer, a third wire passing guide wheel, a fourth wire passing guide wheel, a second pre-deformer, a fifth wire passing guide wheel and a third pre-deformer. Single-wire and double-wire wire feeding modes are adopted for two spools in the double-twisting machine. A pre-deformer and a wire passing guide wheel are added to the cord forming device of the double-twisting machine, and the single-wire and double-wire wire feeding modes are combined to form the cord, thereby reducing the number of manual winding, wire changing and unwinding, improving the production efficiency, reducing the labor intensity of workers, avoiding the problem that the pre-deformation amounts of the two single wires of the double wire are inconsistent when the double wire is forced to bend through the pre-deformer, and affecting the cord forming quality of the finished cord, and meeting the conditions of large-scale production.

Description

Technical Field

[0001] This invention relates to a manufacturing technology for 3x1 structured cords, specifically to a cord-forming device and cord-forming process for 3x1 structured cords. Background Technology

[0002] Steel cord is widely used in rubber products, such as automobile tires, conveyor belts, and high-pressure hoses. As a reinforcing material for rubber products, it requires high strength and good fatigue resistance. In the stranding process of steel cord production, a double-twisting machine is generally used. Whether it's an inner or outer double-twisting machine, the single filaments or strands laid out before stranding are mostly laid out using a single wheel and single strand. Currently, most double-twisting machines on the market are either DOF2 (two-shaft), DOF4 (four-shaft), or DFM6 (six-shaft). However, for 3x1 structure cords, single-shaft single-filament laying requires a DOF4 double-twisting machine, which inevitably wastes a single-shaft, leading to reduced production efficiency and increased labor intensity for workers. Summary of the Invention

[0003] This invention addresses the problems existing in the prior art by proposing a rope-forming device and process for 3x1 structure cords. By adding a pre-deformer and a guide roller to the rope-forming frame of the double twisting machine, and employing a combination of single-wheel single-filament and single-wheel double-filament unwinding methods, the amount of manual winding, wire changing, and unwinding is reduced, thereby improving production efficiency and reducing the labor intensity of workers. At the same time, it avoids the problem of inconsistent pre-deformation of the two single filaments when the double filaments are forcibly bent through the pre-deformer, which affects the rope quality of the finished cord, thus meeting the conditions for large-scale production.

[0004] The technical solution adopted in this invention is: a rope-forming device for a 3x1 structure cord, comprising a support structure, a base, and an L-shaped upright plate. The support structure and the L-shaped upright plate are respectively fixedly installed on the base. A rope-passing hole is provided at the upper end of the L-shaped upright plate. The support structure is located on the side of the L-shaped upright plate away from the rope-passing hole. A first guide wheel, a second guide wheel, a first pre-deformer, a third guide wheel, a fourth guide wheel, a second pre-deformer, a fifth guide wheel, and a third pre-deformer are installed on the support structure. With the L-shaped upright plate as the vertical axis of symmetry, the second and fourth guide wheels are symmetrically distributed, the third and fifth guide wheels are symmetrically distributed, and the first and third pre-deformers are symmetrically distributed.

[0005] A rope-forming process for 3x1 structure cords utilizes a rope-forming device. The two I-beams in the double-twisting machine employ single-wheel monofilament and single-wheel double-filament feeding methods, respectively.

[0006] Laying out the line:

[0007] The single-wire I-beam wheel is placed inside the wire feeding shaft of the boat. The single wire passes through the wire guide roller, then through the fourth wire guide roller, and then through the tension swing rod in a double winding manner. After passing through the fifth wire guide roller, it is forced to bend through the third pre-deformer and finally enters the rope threading hole.

[0008] The single-wheel double-wire I-beam reel is placed on the outer side of the boat's wire-laying shaft. After passing through the wire guide roller and the second wire guide roller, the double wires also pass through the tension swing rod in a double-winding manner. Then, the double wires are split into two single wires. One single wire passes through the third wire guide roller and then passes through the first pre-deformer for bending and deformation. The other single wire passes through the first wire guide roller and then passes through the second pre-deformer for bending and deformation. After that, both single wires enter the rope-threading hole. The three steel wires converge together, pass through the reverse wheel, and are twisted into a rope by the double twisting machine.

[0009] Based on the above scheme, as a preferred option, the tension of the tension rod through which the single wheel and single filament pass is 8N.

[0010] Based on the above scheme, as a preferred option, the tension of the tension rod through which the single wheel and double wires pass is 16N.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] Using a DOF2 double twisting machine to twist 3x1 structure cords into ropes can reduce the number of manual processes for loading, changing yarns, and unloading, thereby improving production efficiency and reducing the labor intensity of workers.

[0013] A rope-forming frame with three pre-deformers is used to twist 3x1 cords, ensuring that the pre-deformation amount is consistent during the unwinding of single-wheel monofilaments and single-wheel double filaments. This allows all three monofilaments of the 3x1 cord structure to be fully pre-deformed, thereby improving the rope-forming quality of the cord. Attached Figure Description

[0014] Figure 1 This is the three-dimensional representation of the present invention. Figure 1 ;

[0015] Figure 2 This is the three-dimensional representation of the present invention. Figure 2 . Detailed Implementation

[0016] The present invention will be further illustrated by the following examples, but the scope of the present invention is not limited thereto.

[0017] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0018] like Figure 1-2 As shown, a rope-forming device for a 3x1 structure cord includes a support structure 10, a base 11, and an L-shaped upright plate 12. The support structure 10 and the L-shaped upright plate 12 are respectively fixedly installed on the base 11. A rope-passing hole 9 is provided at the upper end of the L-shaped upright plate. The support structure is located on the side of the L-shaped upright plate away from the rope-passing hole. A first guide wheel 1, a second guide wheel 2, a first pre-deformer 3, a third guide wheel 4, a fourth guide wheel 5, a second pre-deformer 6, a fifth guide wheel 7, and a third pre-deformer 8 are installed on the support structure 10. With the L-shaped upright plate 12 as the vertical axis of symmetry, the second guide wheel 2 and the fourth guide wheel 5 are symmetrically distributed, the third guide wheel 4 and the fifth guide wheel 7 are symmetrically distributed, and the first pre-deformer 3 and the third pre-deformer 8 are symmetrically distributed.

[0019] A rope-forming process for 3x1 structure cords utilizes a rope-forming device. The two I-beams in the double-twisting machine employ single-wheel monofilament and single-wheel double-filament feeding methods, respectively.

[0020] Laying out the line:

[0021] The single-wire I-beam wheel is placed inside the feeding shaft of the boat. The single wire passes through the wire guide roller, then through the fourth wire guide roller 5, and passes through the tension swing rod in a double winding manner. The tension is set to 8N. After passing through the fifth wire guide roller 7, it is forced to bend through the third pre-deformer 8 and finally enters the rope hole 9.

[0022] A single-wheel double-wire I-beam reel is placed on the outer side of the boat's wire-laying shaft. After passing through the wire guide roller and the second wire guide roller 2, the double wires also pass through the tension swing rod in a double-winding manner. The tension is set to 16N. Then, the double wires are split into two single wires. One single wire passes through the third wire guide roller 4 and then passes through the first pre-deformer 3 for bending and deformation. The other single wire passes through the first wire guide roller 1 and then passes through the second pre-deformer 6 for bending and deformation. After that, both single wires enter the rope-threading hole 9. The three wires converge together, pass through the reverse wheel, and are twisted into a rope by the double twisting machine.

[0023] Taking the feeding of one spool of 0.28mm diameter monofilament and one spool of 0.28mm diameter double filament as an example, only two feeding spools are needed, and the weight of the steel wire carried by each spool increases from 18kg to 50kg. This helps reduce the time workers spend loading and unloading spools and changing steel wires, reducing the labor intensity of workers and increasing the cord yield by 27%. Adding a pre-deformer to the original rope-forming frame allows all three monofilaments of the 3x1 structure cord to be fully pre-deformed, thereby improving the cord-forming quality. The test results are shown in Table 1.

[0024] Table 13x0.28 ST test results

[0025]

[0026] As can be seen from Table 1, the performance of the cords obtained by the method of the present invention using single-wheel single-filament and single-wheel double-filament feeding methods can meet the production requirements.

[0027] It should be noted that the embodiments described above are only for explaining the present invention and do not constitute any limitation on the present invention. The present invention has been described with reference to typical embodiments, but it should be understood that the words used therein are descriptive and explanatory terms, not limiting terms. Modifications can be made to the present invention within the scope of the claims, and revisions can be made to the present invention without departing from the scope and spirit of the present invention. Although the present invention described herein relates to specific methods, materials, and embodiments, it does not mean that the present invention is limited to the specific examples disclosed herein; on the contrary, the present invention can be extended to all other methods and applications with the same function.

Claims

1. A rope-forming device for a 3x1 structure cord, characterized in that, The machine includes a support structure (10), a base (11), and an L-shaped upright plate (12). The support structure (10) and the L-shaped upright plate (12) are fixedly installed on the base (11). A rope hole (9) is provided at the upper end of the L-shaped upright plate. The support structure is located on the side of the L-shaped upright plate away from the rope hole. The support structure (10) is equipped with a first wire guide wheel (1), a second wire guide wheel (2), a first pre-deformer (3), a third wire guide wheel (4), a fourth wire guide wheel (5), a second pre-deformer (6), a fifth wire guide wheel (7), and a third pre-deformer (8). With the L-shaped upright plate (12) as the vertical axis of symmetry, the second wire guide wheel (2) and the fourth wire guide wheel (5) are symmetrically distributed, the third wire guide wheel (4) and the fifth wire guide wheel (7) are symmetrically distributed, and the first pre-deformer (3) and the third pre-deformer (8) are symmetrically distributed. The two I-beams in the double twisting machine are single-wheel single-roller. The wire feeding method of single-wheel double wire and single-wire double wire is as follows: The single-wire single-wheel I-beam is placed on the wire feeding shaft inside the boat. The single wire passes through the wire guide roller, then through the fourth wire guide roller (5), and passes through the tension swing rod in a double winding manner. After passing through the fifth wire guide roller (7), it passes through the third pre-deformer (8) for forced bending, and finally enters the rope hole (9). The single-wire double-wire I-beam is placed on the wire feeding shaft outside the boat. The double wire passes through the wire guide roller and the second wire guide roller (2) and passes through the tension swing rod in a double winding manner. Then the double wire is divided into two single wires. One single wire passes through the third wire guide roller (4) and then through the first pre-deformer (3) for bending deformation. The other single wire passes through the first wire guide roller (1) and then through the second pre-deformer (6) for bending deformation. Then both single wires enter the rope hole (9). The three wires come together and pass through the reverse wheel and then through the double twisting machine to form a rope.

2. The rope-forming device for a 3x1 structure cord as described in claim 1, characterized in that, The tension of the single wheel and single filament passing through the tension rod is 8N.

3. The rope-forming device for a 3x1 structure cord as described in claim 1, characterized in that, The tension of the tension rod passing through the single wheel and double wire is 16N.

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