KR101692503B1 - A cable bead manufactured by double-welded butt type and the method for manufacturing the same - Google Patents

A cable bead manufactured by double-welded butt type and the method for manufacturing the same

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Publication number
KR101692503B1
KR101692503B1 KR1020140152088A KR20140152088A KR101692503B1 KR 101692503 B1 KR101692503 B1 KR 101692503B1 KR 1020140152088 A KR1020140152088 A KR 1020140152088A KR 20140152088 A KR20140152088 A KR 20140152088A KR 101692503 B1 KR101692503 B1 KR 101692503B1
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KR
South Korea
Prior art keywords
wire
twisted
cable
core wire
outer layer
Prior art date
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KR1020140152088A
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Korean (ko)
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KR20160052175A (en
Inventor
임재덕
박옥실
이병호
김동길
Original Assignee
홍덕산업 주식회사
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Application filed by 홍덕산업 주식회사 filed Critical 홍덕산업 주식회사
Priority to KR1020140152088A priority Critical patent/KR101692503B1/en
Priority to PCT/KR2015/011531 priority patent/WO2016072665A1/en
Priority to CN201580060020.0A priority patent/CN107074043B/en
Publication of KR20160052175A publication Critical patent/KR20160052175A/en
Application granted granted Critical
Publication of KR101692503B1 publication Critical patent/KR101692503B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/48—Bead-rings or bead-cores; Treatment thereof prior to building the tyre
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C15/00—Tyre beads, e.g. ply turn-up or overlap
    • B60C15/04—Bead cores
    • B60C2015/046—Cable cores, i.e. cores made-up of twisted wires

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)
  • Ropes Or Cables (AREA)

Abstract

The present invention relates to a cable bead by a single welding and a manufacturing method thereof. A method of manufacturing such a cable bead includes: fabricating a twisted-pair cable by twisting an outer-layer wire to a core wire and an outer circumferential surface of the core wire; Butt welding both ends of the twisted pair cable; Heat-treating the twisted-pair cable butt-welded first and secondarily; And grinding or cutting such that the diameter of the butt-welded joint is greater than or equal to 100% and less than or equal to 110% of the diameter of the twisted-pair cable.

Figure R1020140152088

Description

[0001] The present invention relates to a cable bead and a method of manufacturing the cable bead,

The present invention relates to a cable bead by a single welding and a method of manufacturing the cable bead, and more particularly, to manufacturing a cable bead by butt welding a twisted twisted wire twisted core wire and outer wire wire, thereby increasing work efficiency and productivity, To a cable bead by a single welding and a manufacturing method thereof.

The tire is mounted on a rim constituting the outer circumference of the tire wheel. The design of this part is very important because the overall performance of the tire depends on the combination of tire and rim, such as mounting and handling stability. The portion of the tire wheel where the rim and the tire are connected is referred to as a bead portion. In the bead portion of a tire for a passenger car, generally, four to six wires of a steel wire are wound in layers, The bead core is inserted. The bead core is coated with a relatively hard rubber and functions to fix and support the carcass pliers constituting the tire body. That is, the bead core is used as a reinforcing material for pneumatic tires. Various forces acting by the rotation of the tire, the tire internal air pressure, and the load transmitted through the ground are transmitted to the bead core. Although the bead core of such an environment is advantageous in terms of mounting with a tire, there is a problem that steps are generated between the wires due to the layered structure by the grommetting process.

Meanwhile, the cable bead is formed by spirally winding an outer layer steel wire on an outer circumferential surface of an annular core wire having both end portions butt-welded together without a grommetting process, and then fixing both ends of the outer layer steel wire with a pipe or a clip type device. And is used as a reinforcing material for tires. The cable bead is advantageous in that it has a better deformation resistance due to moment of inertia than the bead core while maintaining a shape similar to the bead core as a whole and is advantageous in terms of adjustment stability. However, a separate manufacturing machine is required and the manufacturing process is complicated, which is disadvantageous in terms of economy.

Specifically, the conventional cable bead is manufactured by the following manufacturing process.

As shown in FIG. 1, the core wire is manufactured by a series of wire manufacturing processes such as pickling, putting, and drawing. Then, the produced core wire is cut to a predetermined length, and both ends are butt welded to form an annular core wire 1. [ The outer layer wire 2 is also manufactured by a series of wire manufacturing processes such as pickling, putting and drawing.

The annular core wire 1 is mounted on a separately manufactured flier (not shown) for manufacturing the cable bead 4 and a single stranded outer wire 2 is wound around the outer periphery of the annular core wire 1, A cabling process is performed.

More specifically, the outer layer wire 2 is individually wound into a small bobbin (not shown) which is almost orthogonal to the rotation axis of the pliers and is freely rotatable, and is drawn out to the annular core wire 1. The small bobbin rotates to prevent twisting. The outer layer wire is spirally wound around the annular core wire rotated by the pliers. By such a process, the cable bead 4 in which the outer layer wire 2 is spirally twisted on the outer peripheral surface of the annular core wire 1 is produced.

At this time, the outer layer wire 2 requires the process time to be considerably long because the required cable bead 4 is repeatedly rotated at least 6 times to at most 30 times depending on the structure. In addition, since the process of fixing the outer layer wire 2 to the annular core wire 1 must be performed, there is a disadvantage in terms of productivity.

2, when the cabling process of spirally winding the outer layer wire 2 on the annular core wire 1 is completed, the outer layer wire 2 is wound around the outer layer wire 2, Since the sleeving process must be performed, there is a disadvantage that the process of the cable bead is troublesome.

Furthermore, when the outer layer wires 2 are formed in a plurality of layers on the annular core wire 1, the cabling process and the sleeving process must be repeatedly performed for each strand, so that the manufacturing process is very cumbersome. It has a disadvantage in that manufacturing cost and labor cost are increased because manpower must be provided separately.

Korean Patent Publication No. 1999-0055216

Disclosure of the Invention The present invention has been conceived in order to solve the above-described problems, and it is an object of the present invention to provide a method of manufacturing a cable bead by twisting a twisted twisted- And a cable bead and a manufacturing method thereof.

According to an aspect of the present invention, there is provided a method of manufacturing a cable bead by single welding, comprising the steps of: fabricating a twisted-pair cable by twisting an outer-layer wire around a core wire and an outer circumferential surface of the core wire; Butt welding both ends of the twisted pair cable; Heat-treating the twisted-pair cable butt-welded first and secondarily; And grinding or cutting such that the diameter of the butt-welded joint is greater than or equal to 100% and less than or equal to 110% of the diameter of the twisted-pair cable.

The method may further include plating the welded portion with the same metal as the plated metal on the outer layer wire.

The method may further include coupling a clip ring plated with the same metal as the plated metal to the outer layer wire to the welded portion.

Further, the method may further include plating the outer layer wire, and the thickness of the plating layer is preferably about 0.1 to 1.0 mu m.

It is preferable that the welding current and the welding voltage of the first heat treatment or the second heat treatment are smaller than the welding current and the welding voltage for butt welding.

According to another aspect of the present invention, there is provided a cable bead by single welding, comprising: a core wire and a twisted core wire stranded on an outer peripheral surface of the core wire; A welded portion where both ends of the twisted portion are butted against each other; And a clip ring coupled to the welded portion, wherein the diameter of the welded portion is not less than 100% and not more than 110% of a diameter of the twisted wire twisted by the core wire and the outer wire.

It is preferable that the welded portion is plated with the same metal as the metal plated on the outer layer wire.

Further, it is preferable that the clip ring is plated with the same metal as the metal plated on the outer layer wire.

It is preferable that the plating layer is plated on the outer layer, and the thickness of the plating layer is about 0.1 to 1.0 탆.

The cable bead and the method of manufacturing the same by the single welding according to the present invention provide an effect of increasing the work efficiency and productivity and reducing the cost by manufacturing the cable bead by butt welding the stranded twisted wire twisted around the core wire and the outer wire .

1 is a view showing a conventional cable bead manufacturing process,
FIG. 2 is a view showing a main portion of the cable bead produced by FIG. 1,
3 is a view showing a cable bead manufacturing process according to an embodiment of the present invention,
FIG. 4 is a flow chart of a cable bead manufacturing process according to an embodiment of the present invention;
5 is a flowchart of a cable bead manufacturing process according to another embodiment of the present invention,
Figure 6 shows a cable bead fabricated by Figure 3,
7 is a view showing a diameter of a welded portion and a cable diameter,
8 is a view showing a cable bead according to an embodiment of the present invention.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 3 is a view showing a cable bead manufacturing process according to an embodiment of the present invention, FIG. 4 is a flowchart of a cable bead manufacturing process according to an embodiment of the present invention, FIG. And a cable bead manufacturing process. Fig. 6 is a view showing a cable bead produced by Fig. 3, and Fig. 7 is a view showing a diameter of a welded portion and a cable diameter. 8 is a view showing a cable bead according to an embodiment of the present invention.

The manufacturing process of the cable bead according to one aspect of the present invention includes steps S1) of stranding the stranded cable 30 by twisting the outer stranded wire 20 to the outer periphery of the core wire 10 and the core wire 10, A step (S2) of butt welding both ends of the twisted cable (30), a step (S3) of heat treating the twisted wire (30) (S4) of grinding or cutting the wire (D) to be 110% or less of the diameter (d) of the twisted cable (30).

4, after manufacturing the core wires 10 and the outer conductor wires 20, the method of manufacturing the cable beads according to the embodiment of the present invention includes the steps of forming the outer conductor wires 20 on the outer circumferential surface of the core wire 10 Twisted wire 30 is manufactured (S1).

The outer layer wires 20 are spirally twisted on the outer circumferential surface of the core wire 10. Then, the twisted-pair cable 30 is cut to a predetermined length. The stranded cable 30 may be formed by twisting one outer layer wire 20 into one core wire 10 or by twisting a plurality of stranded outer wire layers 20 into one core wire 10. The diameters of the core wires 10 and the outer layer wires 20 may be the same or different.

As shown in FIG. 3, the core wire 10 and the outer layer wire 20 are mainly manufactured through processes such as surface treatment, patenting, and drawing.

More specifically, the drawing can be through the first and second drawing processes and is produced by an additional process such as quenching and coating. The manufacturing of the core wire 10 and the outer layer wire 20 itself is based on a general wire process, so a detailed description thereof will be omitted.

According to the present embodiment, the core wire 10 is preferably made of soft steel or hard steel wire containing 0.05 to 0.7 wt% of carbon. It is preferable that the outer layer wire 20 is made of a hard steel wire material having a carbon content of 0.5 to 1.03% by weight.

The outer layer wire 20 is plated with bronze, brass, or zinc. Typically, the plating is performed by an electroplating method or a displacement plating method, and the thickness of the plating layer is set to about 0.1 to 1.0 mu m. The plating treatment improves the adhesion with the tire.

Then, both ends of the twisted cable 30 cut to a predetermined length are butt welded (S2). 6, since the stranded wire 20 is twisted on the outer circumferential surface of the core wire 10 as described above, both ends of the stranded cable 30 are brought close to each other, The core wire 10 and the facing outer layer wire 20 are welded to each other.

At this time, the welding current, the welding voltage, and the cooling time after welding are different according to the diameter of the twisted wire 30. Specifically, when the diameter of the twisted wire 30 is 4 mm or more to 5 mm or less, the welding current is 85 ± 5 A (amperes) (80 A to 90 A) and the welding voltage is 25 ± 2 V (Volts) 23V or more to 27V or less), and the cooling time is 5 +/- 0.5 second (4.5 to 5.5 seconds).

When the diameter of the twisted wire 30 is 6 mm or more to 7 mm or less, the welding current is 110 A to 5 A (Ampere) (115 A to 105 A) and the welding voltage is 30 B to 2 V (Voltage) Or more and 32 V or less), and the cooling time is 5 ± 0.5 seconds (4.5 seconds to 5.5 seconds).

Then, the butt-welded twisted-pair cable 30 is subjected to a heat treatment process S3.

According to the present embodiment, the heat treatment process refers to a step of heating and applying a current and a voltage to the butt welded portion 50 for a predetermined period of time. Since the pearlite structure of the fiber is transformed into the quenched structure by the butt welding, the heat treatment is performed after the welding so as to induce spheroidization of the carbon structure.

According to this embodiment, the heat treatment is performed twice, and the current and voltage of the first heat treatment and the second heat treatment are smaller than the welding current and the welding voltage which are subjected to the butt welding. The welding current and the welding voltage of the first heat treatment and the second heat treatment are weaker than those of the butt welding so that the carbon structure is excessively spheroidized to prevent the welding portion 50 from being easily separated.

Then, a grinding or cutting step S4 is performed.

The grinding step is performed to mechanically grind or cut unnecessary burrs generated in the welded welded portion 50. As shown in FIG. 7, according to the present embodiment, the diameter of the welded portion 50 butt-welded by the grinding or cutting step is 110% or less of the diameter of the twisted wire 30. If the diameter of the welded portion exceeds 110% of the diameter of the twisted cable after the drawing and cutting, the joint between the welded portion and the twisted wire excessively rises to deteriorate the adhesive force with the tire, It is possible to prevent damage to the twisted-pair cable during drawing or cutting.

According to the present embodiment, the step S5 of plating the welded portion 50 and the step S6 of joining the clip ring 60 as shown in Fig. 5 may be further included.

The step S5 of plating the welded portion 50 is a step of plating the welded portion 50 with the same metal as the plated metal to the outer layered wire 20 after performing the above drawing or cutting step.

As described above, the outer layer wire 20 is plated with bronze, brass, or zinc, and the welding portion 50 is plated with the same metal as the metal plated on the outer layer wire 20, .

The step S6 of coupling the clip ring 60 is a step of coupling the clip ring 60 plated with the same metal as the outer layer wire 20 to the welded portion 50. [ The clip ring 60 structurally protects the welded portion 50 and is plated with the same metal as that of the outer layer wire 20, thereby contributing to an improvement in adhesion with the tire.

The step S6 of joining the clip ring 60 may be carried out subsequently after performing the step of plating the weld 50 or omit the step of plating the weld 50, The clip ring 60 may be engaged.

According to another aspect of the present invention, a cable bead 100 is provided.

8, the cable bead 100 according to the embodiment of the present invention is manufactured by the cable bead manufacturing method described above, and the cable bead 100 according to the embodiment of the present invention includes the twist portion 40, a weld portion 50, and a clip ring 60.

The twisted portion 40 means a portion where the core wire 10 and the outer layer wire 20 are twisted on the outer peripheral surface of the core wire 10 and the welded portion 50 is formed such that both ends of the twisted portion 40 Welded part ".

That is, as described in detail in the manufacturing method of the cable bead, the stranded wire 20 is twisted on the outer circumferential surface of the core wire 10 to produce the stranded cable 30, and the stranded cable 30 is cut to a predetermined length When the both ends are butt welded together, an annular cable is produced. At this time, a portion where the outer layer wire 20 is twisted on the outer peripheral surface of the core wire 10 is the twist portion 40, and the welded portion corresponds to the weld portion 50.

The manufacturing process of the core wire 10 and the outer layer wire 20 and the manufacturing process of the twisted wire 30 using the core wire 10 and the outer wire 20 are generally known methods. The core wire 10 and the outer layer wire 20 are made of carbon steel as described above and the outer layer wire 20 is plated with bronze, brass, zinc, or the like in order to improve the adhesive strength between the outer wire and the outer wire. The structure of the core wire 10 and the outer layer wire 20 itself has already been described in the description of the manufacturing method, and a detailed description thereof will be omitted.

As shown in Fig. 8, the clip ring 60 is a ring-shaped member coupled to the welded portion 50 to protect the welded portion 50. As shown in Fig. According to the embodiment of the present invention, the clip ring 60 is plated with the same metal as the plated metal on the outer layer wire 20. [

According to the present embodiment, the diameter of the welded portion 50 is set to be more than 100% to 110% of the diameter of the stranded cable 30 in which the core wire 10 and the outer layer wire 20 are twisted. According to the present embodiment, the twisted cable 30 is formed by twisting one outer layer wire 20 on the outer circumferential surface of the core wire 10, or a plurality of outer layer properties are twisted together on the outer circumferential surface of the core wire 10 Lt; / RTI > After the stranded cable 30 is cut to a predetermined length, both ends are welded to each other.

The welding portion 50 of the butt-welded twisted-pair cable 30 is performed to mechanically grind or remove unnecessary burrs generated after welding. The diameter of the welded portion 50 is somewhat reduced by grinding or cutting. In this case, the final diameter of the welded portion 50 is made to be more than 100% to 110% of the diameter of the twisted wire 30. The reason why the diameter of the welded portion 50 is set in the above range is not described in detail.

Meanwhile, the welded portion 50 may be plated with the same metal as the plated metal on the outer layer wire 20. As described above, the outer layer wire 20 is plated with bronze, brass, or zinc, and the welded portion 50 may be plated with the same metal as the plated metal on the outer layer wire 20 after grinding or cutting. The operation or effect of the plating of the welded portion 50 will not be described in detail.

As described above, the method of manufacturing a cable bead by single welding according to the present invention is characterized in that the twisted cable 30 having the outer layer wire 20 twisted to the outer circumferential surface of the core wire 10 is cut to a predetermined length, The manufacturing process is simplified, the production efficiency is improved, and the manufacturing cost is reduced as compared with the conventional cable bead in which the annular core wire 10 is butt welded and the outer layer wire 20 is twisted and cabled on the outer circumferential surface .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, and many modifications may be made without departing from the scope of the present invention.

10 ... core wire 20 ... outer layer wire
30 ... twisted cable 40 ... twisted portion
50 ... welded part 60 ... clip ring
100 ... Cable Bead

Claims (9)

Fabricating the twisted wire (30) by twisting the outer wire (20) on the outer surface of the core wire (10) and the core wire (10);
Cutting the stranded cable (30) to a predetermined length;
The core wire 10 and the outer core wire 20 are welded to each other so that the core wire 10 and the outer core wire 20 facing each other approach each other when both ends of the twisted cable 30 approach each other, Butt welding both ends of the twisted cable (30);
Heat-treating the twisted-pair cable 30 butt-welded first and secondarily;
Grinding or cutting such that the diameter of the butt welded portion 50 is more than 100% to 110% of the diameter of the twisted cable 30,
Wherein the current and voltage of the first and second heat treatment are smaller than the welding current and the welding voltage for butt welding. The method according to claim 1,
And plating the welded portion (50) with the same metal as the plated metal on the outer layer wire (20). The method according to claim 1,
And joining a clip ring (60) plated with the same metal to the outer layer wire (20) to the weld (50). The method according to claim 1,
And plating the outer layer wire (20), wherein the thickness of the plating layer is about 0.1 to 1.0 mu m. delete delete delete delete delete
KR1020140152088A 2014-11-04 2014-11-04 A cable bead manufactured by double-welded butt type and the method for manufacturing the same KR101692503B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1020140152088A KR101692503B1 (en) 2014-11-04 2014-11-04 A cable bead manufactured by double-welded butt type and the method for manufacturing the same
PCT/KR2015/011531 WO2016072665A1 (en) 2014-11-04 2015-10-30 Cable bead manufactured by single welding and method of manufacturing the cable bead
CN201580060020.0A CN107074043B (en) 2014-11-04 2015-10-30 Pass through the wire bead of single welding manufacture and the method for manufacturing the wire bead

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140152088A KR101692503B1 (en) 2014-11-04 2014-11-04 A cable bead manufactured by double-welded butt type and the method for manufacturing the same

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JP6848344B2 (en) * 2016-10-27 2021-03-24 横浜ゴム株式会社 Pneumatic tires
CN113996738A (en) * 2021-12-30 2022-02-01 天津赛象科技股份有限公司 Double-station rotary type bead ring winding forming device and forming method thereof

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KR19990055216A (en) 1997-12-27 1999-07-15 김영환 Method of forming interlayer insulating film of semiconductor device
JP4076650B2 (en) * 1998-12-31 2008-04-16 株式会社ブリヂストン Method and apparatus for processing steel cord welds
JP4539957B2 (en) * 2004-03-24 2010-09-08 不二精工株式会社 Annular core wire of tire cable bead, core wire therefor and method for producing annular core wire
CN100572110C (en) * 2004-07-05 2009-12-23 住友电工钢线株式会社 Annular concentrically twisted bead cord
JP4040067B2 (en) * 2005-06-01 2008-01-30 住友電工スチールワイヤー株式会社 Annular concentric stranded bead cord and method for manufacturing the same
JP2007297765A (en) * 2006-04-05 2007-11-15 Sumitomo Denko Steel Wire Kk Bead cord and vehicle tire
JP2009255894A (en) * 2007-10-26 2009-11-05 Sumitomo Denko Steel Wire Kk Annular concentrically twisted bead cord and vehicular tire using the same
JP2009241923A (en) * 2008-03-14 2009-10-22 Sumitomo Denko Steel Wire Kk Annular concentrically twisted bead cord, method of manufacturing same, and tire for vehicle
KR20120090605A (en) * 2011-02-08 2012-08-17 고려제강 주식회사 Bronze coated cable bead
JP2014019267A (en) * 2012-07-17 2014-02-03 Bridgestone Corp Cable bead and pneumatic tire using the same
KR101435285B1 (en) * 2012-12-14 2014-08-27 한국타이어 주식회사 Cable beadfor tire
KR20140007308A (en) * 2013-12-07 2014-01-17 한태희 A fishline launcher

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CN107074043B (en) 2019-04-19
WO2016072665A1 (en) 2016-05-12
KR20160052175A (en) 2016-05-12

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