CN109338771A - A kind of structure steel cord new method for producing - Google Patents

A kind of structure steel cord new method for producing Download PDF

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Publication number
CN109338771A
CN109338771A CN201811335251.XA CN201811335251A CN109338771A CN 109338771 A CN109338771 A CN 109338771A CN 201811335251 A CN201811335251 A CN 201811335251A CN 109338771 A CN109338771 A CN 109338771A
Authority
CN
China
Prior art keywords
host
steel cord
monofilament
structure steel
core machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811335251.XA
Other languages
Chinese (zh)
Inventor
张正裕
马卫铭
曹恒祥
潘春东
潘振国
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Xingda Steel Tyre Cord Co Ltd
Original Assignee
Jiangsu Xingda Steel Tyre Cord Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Xingda Steel Tyre Cord Co Ltd filed Critical Jiangsu Xingda Steel Tyre Cord Co Ltd
Priority to CN201811335251.XA priority Critical patent/CN109338771A/en
Publication of CN109338771A publication Critical patent/CN109338771A/en
Pending legal-status Critical Current

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Classifications

    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B3/00General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material
    • D07B3/02General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material in which the supply reels rotate about the axis of the rope or cable or in which a guide member rotates about the axis of the rope or cable to guide the component strands away from the supply reels in fixed position
    • D07B3/04General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material in which the supply reels rotate about the axis of the rope or cable or in which a guide member rotates about the axis of the rope or cable to guide the component strands away from the supply reels in fixed position and are arranged in tandem along the axis of the machine, e.g. tubular or high-speed type stranding machine
    • D07B3/045General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material in which the supply reels rotate about the axis of the rope or cable or in which a guide member rotates about the axis of the rope or cable to guide the component strands away from the supply reels in fixed position and are arranged in tandem along the axis of the machine, e.g. tubular or high-speed type stranding machine with the reels axially aligned, their common axis coinciding with the axis of the machine
    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B1/00Constructional features of ropes or cables
    • D07B1/06Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
    • D07B1/0606Reinforcing cords for rubber or plastic articles
    • D07B1/062Reinforcing cords for rubber or plastic articles the reinforcing cords being characterised by the strand configuration
    • D07B1/0633Reinforcing cords for rubber or plastic articles the reinforcing cords being characterised by the strand configuration having a multiple-layer configuration
    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B1/00Constructional features of ropes or cables
    • D07B1/06Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
    • D07B1/0693Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core having a strand configuration
    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B3/00General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material
    • D07B3/08General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material in which the take-up reel rotates about the axis of the rope or cable or in which a guide member rotates about the axis of the rope or cable to guide the rope or cable on the take-up reel in fixed position and the supply reels are fixed in position
    • D07B3/10General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material in which the take-up reel rotates about the axis of the rope or cable or in which a guide member rotates about the axis of the rope or cable to guide the rope or cable on the take-up reel in fixed position and the supply reels are fixed in position with provision for imparting more than one complete twist to the ropes or cables for each revolution of the take-up reel or of the guide member
    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B7/00Details of, or auxiliary devices incorporated in, rope- or cable-making machines; Auxiliary apparatus associated with such machines
    • D07B7/02Machine details; Auxiliary devices
    • D07B7/025Preforming the wires or strands prior to closing
    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B2201/00Ropes or cables
    • D07B2201/10Rope or cable structures
    • D07B2201/104Rope or cable structures twisted
    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B2201/00Ropes or cables
    • D07B2201/10Rope or cable structures
    • D07B2201/104Rope or cable structures twisted
    • D07B2201/1044Rope or cable structures twisted characterised by a value or range of the pitch parameter given
    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B2207/00Rope or cable making machines
    • D07B2207/20Type of machine
    • D07B2207/202Double twist unwinding
    • D07B2207/203Double twist unwinding comprising flyer
    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B2207/00Rope or cable making machines
    • D07B2207/20Type of machine
    • D07B2207/207Sequential double twisting devices
    • DTEXTILES; PAPER
    • D07ROPES; CABLES OTHER THAN ELECTRIC
    • D07BROPES OR CABLES IN GENERAL
    • D07B2207/00Rope or cable making machines
    • D07B2207/40Machine components
    • D07B2207/4072Means for mechanically reducing serpentining or mechanically killing of rope

Landscapes

  • Ropes Or Cables (AREA)

Abstract

The present invention provides a kind of structure steel cord new method for producing, structure steel cord includes internal layer, middle layer and outer layer from inside to outside, the production method is produced using aggregation type double twisting device, the aggregation type double twisting device includes host and core machine, core machine is outer wire intaking type, host is interior wire intaking type, comprising the following steps: one group of straightener is first arranged between aggregation type double twisting device host and core machine;Internal layer monofilament and middle layer monofilament are built in a rotating body of core machine, are twisted into lay pitch strand by core machine;Internal residual stress is eliminated by intermediate straightener after the output of lay pitch strand;Outer layer monofilament is set in the discharge platform of host, and the lay pitch strand after straightener is aligned, which is once compiled together with outer layer monofilament through host, is twisted steel tendon;Steel tendon completes twisting twice through the rotary body rotation of host, and then compiles and be twisted finished product structure steel cord, and production method of the invention improves production efficiency, has saved production cost, manufacturing cost and cost of labor.

Description

A kind of structure steel cord new method for producing
Technical field
The present invention relates to steel cord production field more particularly to structure steel cord new method for producing.
Background technique
Steel cord as the reinforcing material in tire rubber article, have the advantages that it is significant, mainly: steel cord intensity It is high;The thermal stability of tensile strength is good, is the framework material with clear fatigue limit;With preferable pyroconductivity and preferably Dynamic elasticity rate, impact resistance are good;And tensile creep is small, dimensionally stable;Steel cord is soft, uses it as reinforcing material Tire ride comfort.Steel cord manufacturing process is very complicated, but in summary: steel cord is exactly the high-carbon for being 5.5mm by diameter Steel wire through processing drawing be brass plating high-carbon steel wire redrawing at finer wire twisting made of seizing wire.It is brass coating Main purpose is the binding force in order to have with rubber.
And radial layer structure steel cord, since the internal layer lay pitch is different from the outer layer lay pitch, frequently with two-step method Lay pitch strand is first produced in twisting molding, i.e. core strand and final cord needs two kinds of type combination production modes, comprehensive competition Advantage is unobvious, and production efficiency is not high.
Summary of the invention
In view of the above-mentioned problems, the present invention provides a kind of structure steel cord new method for producing.
To achieve the above object, present invention employs following technical solutions:
A kind of structure steel cord new method for producing, the structure steel cord include internal layer, middle layer and outer layer from inside to outside, interior Layer includes M root monofilament, and middle layer includes N root monofilament, and outer layer includes P root monofilament;The production method uses aggregation type double twisting device Production, the aggregation type double twisting device include host and core machine, and the core machine is outer wire intaking type, and the host is interior wire intaking type, Be characterized in that the following steps are included:
S1: one group of straightener is first set between aggregation type double twisting device host and core machine;
S2: the N root monofilament of the M root monofilament of internal layer and middle layer is built in a rotating body of core machine, is twisted by core machine Away from strand;
S3: it by intermediate straightener after the output of lay pitch strand, is deformed by alternating bending, eliminates internal residual stress;
S4: the P root monofilament of outer layer is set in the discharge platform of host, the P root of lay pitch strand and outer layer after straightener is aligned Monofilament after the noseplate of host is uniformly distributed, is once compiled by line concentration nozzle together and is twisted steel tendon;
S5: steel tendon completes twisting twice through the rotary body rotation of host, and then compiles and be twisted the structure steel cord.
Preferably, according to the revolving speed of the rotary body of core machine, the lay pitch of lay pitch strand is extrapolated;Further according to molding cord standard The lay pitch is different, extrapolates the revolving speed of host.
Preferably, the line concentration nozzle of the host does not rotate, and the steel tendon rotates a circle with host rotary body to be completed once Twisting.
Preferably, Receiving wire wheel is equipped in the host, the Receiving wire wheel is fixed, and the steel tendon is with rotation Swivel, which rotates a circle, completes second of twisting.
Preferably, structure steel cord cross section is circle.
Preferably, the structure length of lay for steel cord size range is 6.0mm-20.0mm.
Preferably, the diameter of the internal layer monofilament is 0.17mm-0.40mm.
Preferably, the diameter of the middle layer monofilament and the outer layer monofilament is 0.15mm-0.38mm.
Compared with prior art, the beneficial effects of the present invention are: step twisting molding, saves semi-finished product manufacturing procedure;? Transition position adds straightener between host and core machine, can eliminate the residual stress inside lay pitch strand, can form structure and more step up Close consistent, the straight better lay pitch strand of effect promotes the qualification rate of finished product steel cord after secondary volume is twisted;And it saves and has been produced into This, improves production efficiency.
Detailed description of the invention
Fig. 1 is a kind of structure steel cord new method for producing procedure structure schematic diagram of the invention.
Fig. 2 is that a kind of outer layer of structure steel cord new method for producing output of the invention is the steel cord section of 11 monofilament Face figure.
Fig. 3 is that a kind of outer layer of structure steel cord new method for producing output of the invention is the steel cord section of 12 monofilament Face figure.
Specific embodiment
To make to have further understanding to the purpose of the present invention, construction, feature and its function, hereby cooperate embodiment detailed It is described as follows.
As shown in Figure 1, a kind of structure steel cord new method for producing of one embodiment of the invention, structure steel cord by it is interior to It outside include internal layer 1, middle layer 2 and outer layer 3, internal layer 1 includes M root monofilament, and middle layer 2 includes N root monofilament, and outer layer 3 includes P root list Silk;The production method is produced using aggregation type double twisting device, and aggregation type double twisting device includes host 4 and core machine 5, and core machine 5 is outer take-up Formula, host 4 are interior wire intaking type, it is characterised in that the following steps are included:
S1: one group of straightener 6 is first set between aggregation type double twisting device host 4 and core machine 5;The effect of straightener 6 is to eliminate to twist Away from the residual stress inside strand 7, even closer consistent, the straight better lay pitch strand 7 of effect of structure is formed, and then promotes two The qualification rate of finished product steel cord after secondary volume is twisted.
S2: the N root monofilament of the M root monofilament of internal layer 1 and middle layer 2 is built in a rotating body of core machine 5, by core machine 5 It is twisted into lay pitch strand 7;Core machine 5 be outer wire intaking type, i.e., the unwrapping wire inside 5 rotary body of core machine, by after 5 twisting of core machine in core machine 5 outside take-ups are twisted so that the M root monofilament of internal layer 1 and the N root monofilament of middle layer 2 rotate to compile in core machine 5 with 5 rotary body of core machine, Volume is twisted after lay pitch strand 7 and exports out of core machine 5 again.
S3: lay pitch strand 7 passes through intermediate straightener 6 after exporting, and deforms by alternating bending, eliminates internal residual and answers Power;The lay pitch strand 7 exported from core machine 5, initially passes through the straightener 6 added, is that lay pitch strand 7 is even closer by straightener 6 Unanimously, straight effect is more preferable.
S4: the P root monofilament of outer layer 3 is set in the discharge platform of host 4, lay pitch strand 7 after the aligning of straightener 6 and outer The P root monofilament of layer 3 after the noseplate 8 of host 4 is uniformly distributed, is once compiled by line concentration nozzle 9 together and is twisted steel tendon 10;The lay pitch Strand 7 directly compiles twirl together with the P root monofilament of outer layer 3 after the aligning of straightener 6, eliminates intermediate steps, improves production effect Rate.
S5: steel tendon 10 completes twisting twice through the rotary body rotation of host 4, and then compiles and be twisted finished product structure steel cord. Preferably, the line concentration nozzle 9 of host 4 does not rotate, and steel tendon 10 rotates a circle with 4 rotary body of host and completes primary twisting.Preferably, Receiving wire wheel 11 is equipped in host 4, Receiving wire wheel 11 is fixed, and steel tendon 10 has rotated a circle with 4 rotary body of host At second of twisting.Host 4 is interior wire intaking type, and 4 rotary body of host rotates a circle, and steel tendon 10, which is compiled, to be twisted twice, compiles and twists efficiency more It is high.
In actual production, three-decker steel cord is usually produced, wherein M=1, N=6, P=11 or 12, section structure is as schemed Shown in 2 and Fig. 3.
Preferably, according to the revolving speed of the rotary body of core machine 5, the lay pitch of lay pitch strand 7 is extrapolated;Further according to molding cord mark The quasi- lay pitch is different, extrapolates the revolving speed of host 4.Radial layer structure steel cord, the internal layer lay pitch are less than or equal to outer layer The lay pitch is first extrapolated the lay pitch of lay pitch strand, then by the lay pitch to reach the steel cord of needs by the revolving speed of 5 rotary body of core machine The lay pitch of strand 7 extrapolates the revolving speed of 4 rotary body of host needs, and then obtains the structure steel cord of desired effect.
Preferably, structure steel cord cross section is circle, according to the difference of the structure steel cord finished product lay pitch, when the internal layer lay pitch When less than the outer layer lay pitch, structure steel cord is circle.
Preferably, using the above method, the structure length of lay for steel cord size range produced is 6.0mm-20.0mm.
By production practices, it is preferable that the diameter of 1 monofilament of internal layer is 0.17mm-0.40mm;Preferably, 2 monofilament of middle layer Diameter with 3 monofilament of outer layer is 0.15mm-0.38mm.
A kind of structure steel cord new method for producing of the invention, can a step twisting molding, save semi-finished product processing work Sequence;Transition position adds straightener between host and core machine, can eliminate internal residual stress, can form structure even closer one It causes, the better lay pitch strand of straight effect, promotes the qualification rate of finished product steel cord after secondary volume is twisted;Reduce comprehensive manufacture at This, improves production efficiency, has saved occupied area in production, has reduced cost of labor, and it is qualified to improve steel cord product Rate.
The present invention is described by above-mentioned related embodiment, however above-described embodiment is only to implement example of the invention. It must be noted that the embodiment disclosed is not limiting as the scope of the present invention.On the contrary, do not depart from spirit of the invention and It is changed and retouched made by range, belongs to scope of patent protection of the invention.

Claims (8)

1. a kind of structure steel cord new method for producing, the structure steel cord includes internal layer, middle layer and outer layer from inside to outside, Internal layer includes M root monofilament, and middle layer includes N root monofilament, and outer layer includes P root monofilament;The production method is twisted using aggregation type is double Machine production, the aggregation type double twisting device include host and core machine, and the core machine is outer wire intaking type, and the host is interior wire intaking type, Characterized by the following steps:
S1: one group of straightener is first set between aggregation type double twisting device host and core machine;
S2: the N root monofilament of the M root monofilament of internal layer and middle layer is built in a rotating body of core machine, is twisted by core machine Away from strand;
S3: it by intermediate straightener after the output of lay pitch strand, is deformed by alternating bending, eliminates internal residual stress;
S4: the P root monofilament of outer layer is set in the discharge platform of host, the P root of lay pitch strand and outer layer after straightener is aligned Monofilament after the noseplate of host is uniformly distributed, is once compiled by line concentration nozzle together and is twisted steel tendon;
S5: steel tendon completes twisting twice through the rotary body rotation of host, and then compiles and be twisted the structure steel cord.
2. structure steel cord new method for producing as described in claim 1, it is characterised in that: according to turning for the rotary body of core machine Speed extrapolates the lay pitch of lay pitch strand;It is different further according to the molding cord standard lay pitch, extrapolate the revolving speed of host.
3. structure steel cord new method for producing as described in claim 1, it is characterised in that: the line concentration nozzle of the host does not turn Dynamic, the steel tendon rotates a circle with host rotary body and completes primary twisting.
4. structure steel cord new method for producing as described in claim 1, it is characterised in that: be equipped with take-up work in the host Character wheel, the Receiving wire wheel is fixed, and the steel tendon rotates a circle with rotary body and completes second of twisting.
5. structure steel cord new method for producing as described in claim 1, it is characterised in that: structure steel cord cross section For circle.
6. structure steel cord new method for producing as described in claim 1, it is characterised in that: the structure length of lay for steel cord ruler Very little range is 6.0mm-20.0mm.
7. structure steel cord new method for producing as described in claim 1, it is characterised in that: the diameter of the internal layer monofilament is 0.17mm-0.40mm。
8. structure steel cord new method for producing as described in claim 1, it is characterised in that: the middle layer monofilament and described The diameter of outer layer monofilament is 0.15mm-0.38mm.
CN201811335251.XA 2018-11-10 2018-11-10 A kind of structure steel cord new method for producing Pending CN109338771A (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111621895A (en) * 2020-04-27 2020-09-04 江苏兴达钢帘线股份有限公司 Production method and production device of steel cord
WO2022135850A1 (en) * 2020-12-21 2022-06-30 Nv Bekaert Sa A steel cord for rubber reinforcement

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6389995U (en) * 1986-11-28 1988-06-10
US5581990A (en) * 1994-04-07 1996-12-10 N.V. Bekaert S.A. Twisting steel cord with wavy filament
JP2006144195A (en) * 2004-11-24 2006-06-08 Hamana Tekko Kk Double-twist buncher
CN102220713A (en) * 2011-03-09 2011-10-19 徐建坤 Device for producing multifunctional silencing kraft paper steel wires
CN202583789U (en) * 2012-02-03 2012-12-05 无锡市和迅亿阳自动化工程有限公司 Control system for steel cord outer coiling machine
CN104594088A (en) * 2014-12-28 2015-05-06 江苏兴达钢帘线股份有限公司 Double-twisting strander of external take-up and internal pay-off type
WO2015169521A1 (en) * 2014-05-08 2015-11-12 Nv Bekaert Sa Steel cord with reduced residual torsions
CN205115903U (en) * 2015-10-22 2016-03-30 镇江耐丝新型材料有限公司 Outer two machines of twisting with fingers of receiving are put to two receipts on -lines
CN207031900U (en) * 2017-06-30 2018-02-23 江苏艾可森钢绳有限公司 A kind of steel wire rope stranding machine

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6389995U (en) * 1986-11-28 1988-06-10
US5581990A (en) * 1994-04-07 1996-12-10 N.V. Bekaert S.A. Twisting steel cord with wavy filament
JP2006144195A (en) * 2004-11-24 2006-06-08 Hamana Tekko Kk Double-twist buncher
CN102220713A (en) * 2011-03-09 2011-10-19 徐建坤 Device for producing multifunctional silencing kraft paper steel wires
CN202583789U (en) * 2012-02-03 2012-12-05 无锡市和迅亿阳自动化工程有限公司 Control system for steel cord outer coiling machine
WO2015169521A1 (en) * 2014-05-08 2015-11-12 Nv Bekaert Sa Steel cord with reduced residual torsions
CN104594088A (en) * 2014-12-28 2015-05-06 江苏兴达钢帘线股份有限公司 Double-twisting strander of external take-up and internal pay-off type
CN205115903U (en) * 2015-10-22 2016-03-30 镇江耐丝新型材料有限公司 Outer two machines of twisting with fingers of receiving are put to two receipts on -lines
CN207031900U (en) * 2017-06-30 2018-02-23 江苏艾可森钢绳有限公司 A kind of steel wire rope stranding machine

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
北京无线电学校: "《电子专用机械设备设计基础》", 30 June 1980 *
戴宝昌: "《重要用途线材制品生产新技术》", 31 October 2001 *
殷瑞钰: "《钢的质量现代进展 上篇 普通碳素钢和低合金钢》", 30 November 1995 *
王奎生: "《钢丝绳生产工艺与设备》", 30 June 1993 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111621895A (en) * 2020-04-27 2020-09-04 江苏兴达钢帘线股份有限公司 Production method and production device of steel cord
WO2022135850A1 (en) * 2020-12-21 2022-06-30 Nv Bekaert Sa A steel cord for rubber reinforcement

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Application publication date: 20190215

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