Position adjustment apparatus and method for wave shape of pre-deformed steel wire in cord

Abstract

Disclosed in the present invention are a position adjustment apparatus and method for a wave shape of a pre-deformed steel wire in a cord. The apparatus comprises a wire separating disc and a plurality of adjustment mechanisms; the plurality of adjustment mechanisms are circumferentially and uniformly distributed on the wire separating disc; each adjustment mechanism comprises a base and a movable wire guide wheel, and the movable wire guide wheel is movably connected to the base along the radial direction of the wire separating disc; a pre-deformed wave-shaped steel wire is wound around the movable wire guide wheel to a twisting point. The present invention improves the rubber penetration rate of the cord, and achieves production of a cord of a flat structure.

Description

A device and method for adjusting the position of pre-deformed steel wire waveform in a cord Technical Field

[0001] The present invention relates to the technical field of steel cord production, and in particular to a device and method for adjusting the position of a pre-deformed steel wire waveform in a cord. Background Art

[0002] When a tire is punctured by a sharp object, oxygen or water vapor will penetrate into the cord through the damaged area. Due to the gaps inside the cord, these oxygen or water vapor will continue to diffuse along the cord direction to the entire cord, causing steel wire corrosion and adhesion failure. In order to solve this problem, the cord is currently designed to be open or highly permeable, so that the rubber can easily penetrate into the cord and fill the gaps during the vulcanization process, thereby preventing the diffusion of oxygen or water vapor inside the cord.

[0003] However, as shown in FIG3 , the steel wires are paid off through the steel wire pay-off unit 8 and then guided to the pre-deformer 10 by the first conductor mechanism 9 for pre-deformation, thereby obtaining the desired corrugated steel wires 11 (F1, F2, F3, F4, and F5). The waveform positions on each steel wire are arranged in sequence. It is expected that after the corrugated steel wires 11 are twisted into cords, the waveforms in each steel wire will still appear in sequence at this position. However, since the paths of each steel wire from the second conductor mechanism 12 through the branching device 13 to the twisting point 14 are different and uncontrollable, as shown in FIG4 , the path L1 is the longest, L2 is the second, and L3 is the shortest. The running speeds of the steel wires are always the same. Therefore, when the steel wires are twisted together after passing through different paths, the above-mentioned sequentially arranged waveform positions are broken. Finally, under the twisting action of the twisting main machine 15, the desired cord structure (as shown in FIG5 ) cannot be formed, and the high rubber permeability expected by the desired cord structure cannot be obtained. This production method cannot also produce cords with special structures such as flat structures.

[0004] Summary of the Invention

[0005] The purpose of the present invention is to overcome the defects of the prior art and provide a device and method for adjusting the position of a pre-deformed steel wire waveform in a cord, so as to solve the problems of low adhesive penetration rate of the cord produced in the prior art and inability to produce a flat structure cord.

[0006] To solve the above technical problems, the present invention is implemented by adopting the following solutions:

[0007] The present invention provides a device for adjusting the position of a pre-deformed steel wire waveform in a cord, comprising a distribution disk and a plurality of adjustment mechanisms; the plurality of adjustment mechanisms are circumferentially evenly distributed on the distribution disk, each adjustment mechanism comprising a base and a movable wire wheel, the movable wire wheel moving radially along the distribution disk and connected to the base; the pre-deformed corrugated steel wire is wound around the movable wire wheel to a twisting point.

[0008] Furthermore, at least three adjustment mechanisms are provided.

[0009] Furthermore, it also includes a slider and a slide groove, the slide groove is opened in the base, the slider is slidably connected in the slide groove, and the movable wire wheel is fixedly installed on the slider.

[0010] Furthermore, it also includes a push rod, which is fixedly connected to the slider and extends out of the base.

[0011] Furthermore, it also includes a fixed wire wheel, which is fixedly installed on the base and is arranged on both sides of the movable wire wheel.

[0012] Furthermore, at least two fixed wire wheels are provided.

[0013] Furthermore, the adjusting mechanism can adjust the path length of the corrugated steel wire to be at least half the length of the waveform period.

[0014] The present invention also provides a method for adjusting the position of a pre-deformed steel wire waveform in a cord, which is applied to the above-mentioned device for adjusting the position of a pre-deformed steel wire waveform in a cord, comprising:

[0015] Adjust the position of the guide wheel in the base of each adjustment mechanism on the distribution plate according to the expected cord structure.

[0016] Furthermore, when the path length required for the corrugated steel wire constituting the desired cord structure is short, the position of the movable guide wheel in the corresponding adjustment mechanism is lowered in the base;

[0017] When the path length required for the corrugated steel wire constituting the desired cord structure is long, the position of the movable wire pulley in the base in the corresponding adjustment mechanism is raised.

[0018] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention adjusts the routing path of the steel wire between the deformation by the pre-deformer and the twisting point, thereby changing the spatial position of the pre-deformed peaks or troughs on each component corrugated steel wire in the cord, thereby changing the structure of the cord, realizing the production of flat-structured cords, and improving the rubber penetration rate of the cord. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 1 is a schematic structural diagram of a device for adjusting the position of a pre-deformed steel wire waveform in a cord provided by an embodiment of the present invention;

[0020] FIG2 is a schematic structural diagram of an adjusting mechanism of a pre-deformed steel wire waveform in a cord position adjusting device provided by an embodiment of the present invention;

[0021] FIG3 is a schematic structural diagram of an existing cord production method provided by the present invention;

[0022] FIG4 is a schematic diagram of the paths of the corrugated steel wires in the conventional cord production method described in FIG3 ;

[0023] FIG5 is a schematic diagram of a desired cord structure according to the conventional cord production method described in FIG3 ;

[0024] 6 is a schematic diagram of a second embodiment of a device for adjusting the position of a pre-deformed steel wire waveform in a cord provided by an embodiment of the present invention;

[0025] 7 is a schematic diagram of the morphology of the steel wires of the 0535HI cord provided by an embodiment of the present invention after passing through the twisting point when the cord is produced according to the existing cord production method;

[0026] FIG8 is a schematic diagram of the first morphology of the constituent steel wires after passing through the twisting point when a device for adjusting the position of a pre-deformed steel wire waveform in a cord provided by an embodiment of the present invention is applied to a 0535HI cord;

[0027] 9 is a schematic diagram of a second morphology of a pre-deformed steel wire waveform in a cord provided by an embodiment of the present invention when the position adjustment device is applied to a 0535HI cord and its constituent steel wires pass through a twisting point;

[0028] 10 is a schematic diagram of a third embodiment of a device for adjusting the position of a pre-deformed steel wire waveform in a cord according to an embodiment of the present invention;

[0029] In the figure: 1. Wire distribution plate; 2. Adjustment mechanism; 3. Base; 4. Slider; 5. Push rod; 6. Slide; 7a. Movable wire pulley; 7b. Fixed wire pulley 1; 7c. Fixed wire pulley 2; 8. Wire pay-off unit; 9. First wire mechanism; 10. Pre-deformer; 11. Corrugated wire; 12. Second wire mechanism; 13. Wire distribution device; 14. Twisting point; 15. Twisting main unit. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

[0031] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0033] Please refer to Figures 1 and 2. The present invention provides a device for adjusting the position of a pre-deformed steel wire waveform in a cord. The device consists of a distribution disk 1 and multiple adjustment mechanisms 2. The multiple adjustment mechanisms 2 are evenly distributed circumferentially on the distribution disk 1. The adjustment mechanism can adjust the length of the waveform steel wire path to at least half the length of the waveform period. At least three adjustment mechanisms 2 are provided. Each adjustment mechanism 2 includes a base 3, a slider 4, a top rod 5, a slide 6, a movable wire wheel 7a and multiple fixed wire wheels. The movable wire wheel 7a is connected to the base 3 for radial movement along the distribution disk 1. Specifically, the slide 6 is opened in the base 3, the slider 4 is slidably connected in the slide 6, the movable wire wheel 7a is fixedly installed on the slider 4, the top rod 5 is fixedly connected to the slider 4 and extends out of the base 3, the fixed wire wheel is fixedly installed on the base 3 and is disposed on both sides of the movable wire wheel 7a. There are at least two fixed wire wheels, namely, fixed wire wheel 1 7b and fixed wire wheel 2 7c; the pre-deformed waveform steel wire 11 is wound around the movable wire wheel 7a to the twisting point 14.

[0034] The present invention also provides an adjustment method for a device for adjusting the position of a pre-deformed steel wire waveform in a cord, which is applied to the above-mentioned device for adjusting the position of a pre-deformed steel wire waveform in a cord, comprising: adjusting the position of a movable wire pulley in a base in each adjustment mechanism on a distribution disk according to an expected cord structure, specifically: when the path length required for the corrugated steel wire constituting the expected cord structure is short, lowering the position of the movable wire pulley in the base in the corresponding adjustment mechanism; when the path length required for the corrugated steel wire constituting the expected cord structure is long, raising the position of the movable wire pulley in the base in the corresponding adjustment mechanism.

[0035] Example 1:

[0036] The device and method for adjusting the position of the pre-deformed steel wire waveform in the cord are applied to the existing cord production method, and this is taken as an example, specifically as follows: replace the branching device 13 in Figure 3 with the present device for adjusting the position of the pre-deformed steel wire waveform in the cord, then the pre-deformed corrugated steel wire 11 is routed from the adjustment mechanism 2 on the branching disk 1, and is wound around the fixed wire wheel 2 7c, the movable wire wheel 7a and the fixed wire wheel 1 7b in sequence, the slider 4 and the movable wire wheel 7a thereon can realize the position adjustment function under the action of the top rod 5, specifically: when the position of the movable wire wheel 7a is high, the winding length of the corrugated steel wire 11 thereon is long; when the position of the movable wire wheel 7a is low, the winding length of the corrugated steel wire 11 thereon is short.

[0037] For the convenience of design, the path length of the corrugated steel wire 11 that can be adjusted by the adjustment mechanism 2 in this embodiment satisfies at least the length of one waveform cycle. Thus, as shown in FIG4 , if the length of the path L1 when the steel wire F1 is running is 10.3L (L is the length of the steel wire waveform cycle), and the length of the path L3 when the steel wire F3 is running is 8.0L, the length of the path L1 can be adjusted to 10L or 11L by the adjustment mechanism 2, while L3 is not adjusted; or the length of the path L1 remains unchanged, and the length of the path L3 is adjusted to 8.3L or 7.3L by the adjustment mechanism 2; in this way, it can be ensured that the waveform spatial positions of each steel wire are in an orderly arrangement when they are separated, and at the same time, when twisted into a cord, the waveform load cords of each steel wire are still in an orderly arrangement, thereby obtaining a flat cord of the desired structure (as shown in FIG5 ).

[0038] It should be understood that the above description is explained theoretically. In actual operation, the position of the twisting point 14 and the spatial position of the waveform of each pre-deformed corrugated steel wire 11 in this bundle can be observed, so as to adjust the various adjustment mechanisms 2 distributed on each steel wire path in a targeted manner. It is not necessary to actually measure the path length of each steel wire and then compare them.

[0039] Example 2:

[0040] As shown in Figure 6, in the existing 0535HI cord production process, there is no branching device 13 when producing the cord, and the morphology of the five steel wires (F6, F7, F8, F9 and F10) after passing the twisting point 14 can be understood as shown in Figure 7; and the pre-deformed steel wire waveform position adjustment device is applied to the position of the branching device 13, and the five steel wires are deformed by the pre-deformer 10 to obtain five waveform steel wires 11 with exactly the same deformation morphology. Using the pre-deformed steel wire waveform position adjustment device in the cord, the morphology of the five steel wires after passing the twisting point 14 can be understood as shown in Figure 8 or Figure 9; therefore, when the five steel wires are twisted together, the spatial positions of the pre-deformed wave crests and the wave crests of the five steel wires in the cord are always consistent. Since the pre-deformed wave crests and the wave crests of the five steel wires are at the same node, a larger gap is formed in the cord at this location, thereby improving the glue penetration rate and glue penetration amount of the cord. In this case, the glue penetration rate test result of the cord can be stably maintained at 100%. In addition, in this embodiment, the adjustment amount of the path length by the adjustment mechanism 2 must satisfy ≥ L, where L = 3.3 mm.

[0041] Example 3:

[0042] As shown in Figure 10, three steel wires F11, F12, and F13, each with a diameter of 0.30 mm, exhibit intermittent waveforms after being deformed by the pre-deformer 10. The waveform length M is 5.5 mm, and the undeformed length is 2 M, which is 11 mm. The waveforms of the three steel wires remain aligned horizontally. After passing through the pre-deformed steel wire waveform position adjustment device, the device regulates the wire path. After each wire passes through the twisting point 14, the waveforms of the three wires are aligned sequentially, achieving uniform distribution along the length of the cord. Compared to conventional 0330 structure cords, this structure has a higher rubber permeability, avoids the formation of a closed space at the center of the cord, and maintains higher cord durability. Furthermore, in this embodiment, the adjustment mechanism 2 must adjust the path length by ≥3 M, where M = 5.5 mm.

[0043] In summary, the present invention adjusts the routing path of the steel wire between the deformation by the pre-deformer and the twisting point, changes the spatial position of the pre-deformed peaks or troughs on each component corrugated steel wire in the cord, thereby changing the structure of the cord, realizing the production of flat-structured cords, and improving the glue penetration rate of the cord.

[0044] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A device for adjusting the position of a pre-deformed steel wire waveform in a cord, characterized in that: It includes a distribution disk and multiple adjustment mechanisms; the multiple adjustment mechanisms are evenly distributed on the distribution disk in the circumferential direction, each adjustment mechanism includes a base and a movable wire wheel, the movable wire wheel moves radially along the distribution disk and is connected to the base; the pre-deformed corrugated steel wire is wound around the movable wire wheel to the twisting point.

2. The device for adjusting the position of the pre-deformed steel wire waveform in the cord according to claim 1, characterized in that: At least three adjusting mechanisms are provided.

3. The device for adjusting the position of the pre-deformed steel wire waveform in the cord according to claim 1, characterized in that: The utility model also comprises a slider and a slide groove. The slide groove is arranged in the base. The slider is slidably connected in the slide groove. The movable wire wheel is fixedly installed on the slider.

4. The device for adjusting the position of the pre-deformed steel wire waveform in the cord according to claim 3, characterized in that: It also includes a push rod, which is fixedly connected to the sliding block and extends out of the base.

5. The device for adjusting the position of the pre-deformed steel wire waveform in the cord according to claim 1, characterized in that: The utility model also comprises a fixed wire wheel, which is fixedly installed on the base and is arranged on both sides of the movable wire wheel.

6. The device for adjusting the position of the pre-deformed steel wire waveform in the cord according to claim 5, characterized in that: At least two fixed wire wheels are provided.

7. The device for adjusting the position of the pre-deformed steel wire waveform in the cord according to claim 1 or 2, characterized in that: The adjusting mechanism can adjust the path length of the corrugated wire to be at least half the length of the corrugated cycle.

8. A method for adjusting the position of a pre-deformed steel wire waveform in a cord, applied to the device for adjusting the position of a pre-deformed steel wire waveform in a cord as claimed in any one of claims 1 to 7, characterized in that: include: Adjust the position of the movable wire wheel in the base in each adjustment mechanism on the distribution plate according to the expected cord structure.

9. The method for adjusting the position of the pre-deformed steel wire waveform in the cord according to claim 8, characterized in that: Adjust the position of the guide wheel in the base of each adjustment mechanism on the distribution plate according to the expected cord structure, including: When the path length required for the corrugated steel wire constituting the expected cord structure is short, lowering the position of the movable wire wheel in the base in the corresponding adjustment mechanism; When the path length required for the corrugated steel wire constituting the desired cord structure is long, the position of the movable wire wheel in the base in the corresponding adjustment mechanism is increased.

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