CN104358172A - Steel cord twisting and untwisting device - Google Patents
Steel cord twisting and untwisting device Download PDFInfo
- Publication number
- CN104358172A CN104358172A CN201410595247.2A CN201410595247A CN104358172A CN 104358172 A CN104358172 A CN 104358172A CN 201410595247 A CN201410595247 A CN 201410595247A CN 104358172 A CN104358172 A CN 104358172A
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- CN
- China
- Prior art keywords
- cord
- torsion
- twisting
- untwister
- steel cord
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- 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.)
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Classifications
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B7/00—Details of, or auxiliary devices incorporated in, rope- or cable-making machines; Auxiliary apparatus associated with such machines
- D07B7/02—Machine details; Auxiliary devices
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2015—Strands
- D07B2201/2021—Strands characterised by their longitudinal shape
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2207/00—Rope or cable making machines
- D07B2207/20—Type of machine
- D07B2207/207—Sequential double twisting devices
- D07B2207/208—Sequential double twisting devices characterised by at least partially unwinding the twist of the upstream double twisting step
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2207/00—Rope or cable making machines
- D07B2207/40—Machine components
- D07B2207/4072—Means for mechanically reducing serpentining or mechanically killing of rope
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2401/00—Aspects related to the problem to be solved or advantage
- D07B2401/20—Aspects related to the problem to be solved or advantage related to ropes or cables
- D07B2401/2015—Killing or avoiding twist
Landscapes
- Ropes Or Cables (AREA)
Abstract
The invention discloses a steel cord twisting and untwisting device. The steel cord twisting and untwisting device comprises an unwinding device, a twister, a torsional limiting device, an untwister, a winding device and a cord passing wheel, wherein the torsional limiting device is arranged between the twister and the untwister; a steel cord sequentially passes through an I-shaped wheel of the unwinding device, the twister, the torsional limiting device, the untwister, an I-shaped wheel of the winding device and the cord passing wheel arranged between the I-shaped wheels. By applying torsion to the cord, tension stress or pressure stress on the surface of the cord is changed into torsional shear stress, so that the stress on the surface of the cord is balanced, and the aim of straightening the cord is achieved; by applying reverse torsion to the cord, the residual torsion of the cord is eliminated, the cord which is produced and manufactured has excellent strength, toughness and anti-fatigue performances and is high in straightness and appropriate in residual torsion, the production requirements on a rubber cord fabric are met, and the cord is applied to tire belted layers.
Description
Technical field
The present invention relates to the processing and manufacturing of steel cord, particularly relate to a kind of device that can reduce or eliminate residual torsional stress of steel cord.
Background technology
Steel cord is widely used in rubber product, as automobile tire, conveyer belt, high-pressure rubber pipe etc., as the reinforcing material of rubber product, needs to have the performances such as good intensity, toughness, anti-fatigue performance, rubber permeability, bonding force.Steel cord is more importantly used as the reinforcing material of automobile tire, and it can be used for band bundled layer, also can be used for carcass.Steel cord for band bundled layer generally has the structure such as n × 1, m+n, in the process that steel cord twisting is produced, cord is with running Flywheel disc high speed twisting, define very large residual stress, need to discharge in right amount the unnecessary stress of cord, guarantee cord unwrapping wire glacing flatness when tire producer uses is better.CN 203372006 U provides the method for the straight cord that a kind of double twisting device manufactures, but the cord of the method manufacture exists obvious Residual torsion.All can there is cord out-of-flatness when this steel cord embeds the vulcanization of rubber, calendering in these situations, the bad phenomenon such as cord is curling, nose, have a strong impact on the quality of production of cotton tyre cord.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, provide a kind of and have good glacing flatness, can reduce or eliminate the residual torsional stress of cord, meet the production requirement of rubber cord, the steel cord being applied to tire belt production adds untwisting device.
The present invention is achieved by the following technical solution:
Steel cord adds untwisting device, comprise actinobacillus device, twisting mill, limit turn round device, untwister, take-up and wire-crossing wheel, described limit is turned round device and is arranged between twisting mill and untwister, and described steel cord turns round device, untwister, the I-beam wheel of take-up and the wire-crossing wheel that arranges between them through the I-beam wheel of actinobacillus device, twisting mill, limit successively.
Described twisting mill is the double twisting device of interior unwrapping wire, and described untwister is the double twisting device of interior take-up.
Described limit is turned round device and is limited and turns round guide wheel.
Described steel cord adds untwisting device and also comprises false twist device and swage, and described false twist device and swage are successively set between untwister and take-up.
It is exactly add torsion that the present invention carries out twisting to cord, by the tension of cord surface or compression are changed into torsional shear stress, makes cord surface stress equilibrium, reaches the object of alignment cord; Then backtwisting is carried out to cord, namely detorsion is carried out to cord, eliminate the Residual torsion of cord, make the glacing flatness≤3cm/6m of cord, Residual torsion≤3T/6m.
Cord surface has residual tension, if after adopting swage to carry out flexural deformation, cord surface residual stress may change into compression, but no matter residual stress is tension or compression, because the core rod of drawing mould is axially completely the same to being difficult to adjust to steel wire axle in cord production process, or along with the wearing and tearing drawing Angulation changes of drawing a period of time rear mold, always cause Steel Wire Surface residual stress uneven, thus cause cord have circle footpath or stick up distance, the glacing flatness of cord is poor, even if adjusted by swage, still cannot obtain linear cord.
In order to obtain linear cord, the present invention is by adding torsion to cord, and the stress changing cord surface is torsional shear stress, and this is easy to cord surface residual stress is balanced.When cord adds torsion, reversing with moment of torsion is Flexible change in the incipient stage, reach elasticity of torsion limit retrotorsion and moment of torsion enters plastic period, the change in torque of plastic period is more steady, twisting number of torsions and torque curve change shown in Figure 1, the number of torsions during elasticity of torsion limit is labeled as N0, when elastic deformation stage, N1 time (N1≤N0) is reversed as added, when turning round add after load removes, cord turns round along the opposite direction adding torsion N1 time, namely more than this one-phase cord residual, number of torsions equals to add number of torsions, now, be released adding to turn round after load is removed by adding the cord surface torsional shear stress reversing and obtain, cord surface residual stress is obviously changed, the object of alignment cord can not be arrived, when plastic period, N1 time (N1 > N0) is reversed as added, when turning round add after load removes, cord turns round about N0 time by along the opposite direction adding torsion, and namely more than this one-phase cord residual, number of torsions is approximately a stable numerical value of N 0, now, remove add turn round load after cord surface still have Residual torsion shear stress, and Residual torsion shear stress is evenly distributed along cord circumferential surface, cord surface stress difference reduces, thus can play the effect of alignment cord.The stress difference adding number of torsions N1 cord surface is more at most less, and the linearity of cord is better.Above-mentioned N0, N1 are the number of torsions under identical cord length.
Be torsional shear stress to make the residual stress of cord surface, and obtain linear cord, cord needs when adding torsion to enter plastic period, and cord linearity will be made fine, then need longer plastic period, but cord adds intensity and anti-fatigue performance that torsion too much can reduce cord, so 2 ~ 6 times of number of torsions N0 when the times N 1 adding torsion is generally the elasticity of torsion limit, wherein N0, N1 are the number of torsions under identical cord length.
There is Residual torsion in the cord adding torsion, add after torsion enters the plastic stage, the change in torque of cord is steady, and now the Residual torsion of cord is more stable, and Residual torsion number of times approximates greatly the number of torsions N0 during elasticity of torsion limit.In order to reduce or eliminate the Residual torsion of cord, need to carry out detorsion (i.e. backtwisting) to cord.When detorsion times N 2 approximates greatly the number of torsions N0 of the elasticity of torsion limit, the Residual torsion of cord can be made to reduce even close to 0, and wherein N0, N2 are the number of torsions under identical cord length.
The sth. made by twisting adding torsion (twisting) to the sth. made by twisting of detorsion (backtwisting) to contrary, when add reverse for S twist with the fingers to time, anti-twisted transfer to Z sth. made by twisting to; When add reverse for Z twist with the fingers to time, anti-twisted transfer to S sth. made by twisting to.
The present invention compared with prior art has following beneficial effect:
By adding torsion to cord, the tension of cord surface or compression are changed into torsional shear stress, make cord surface stress equilibrium, reach the object of alignment cord, then detorsion is carried out to cord, eliminate the Residual torsion of cord, glacing flatness≤the 3cm/6m of cord, Residual torsion≤3T/6m, the cord manufactured has good intensity, toughness, anti-fatigue performance, and there is good glacing flatness and suitable Residual torsion, meet the production requirement at rubber cord, and be applied to tire belt.
Accompanying drawing explanation
Fig. 1 is the torsion-torque diagram of cord in twisting process in the embodiment of the present invention;
Fig. 2 is the structural representation in the embodiment of the present invention; Sequence number in figure: 1, the I-beam wheel of actinobacillus device, 2, the I-beam wheel of take-up, 3, cord, 4, twisting mill, 5, untwister, 6, limit turns round guide wheel, 7, false twist device, 8, swage;
Fig. 3 is the diagram that the cord in Fig. 2 on Loosen up wire wheel launches in smooth horizontal plane;
Fig. 4 is the diagram that the cord in Fig. 2 on Receiving wire wheel launches in smooth horizontal plane;
Fig. 5 is the diagram of cord glacing flatness detection method of the present invention; Sequence number in figure: 9-1, parallel lines one, 9-2, parallel lines two, 3-1, cord;
Fig. 6 is the diagram of cord Residual torsion detection method of the present invention; Sequence number in figure: 2-1, Receiving wire wheel, 3-2, cord;
Fig. 7 is that in the embodiment of the present invention, limit turns round the structure enlarged diagram that guide wheel is used alone state;
Fig. 8 is that in the embodiment of the present invention, limit turns round guide wheel two only with the use of the structure enlarged diagram of state.
Detailed description of the invention
Below the specific embodiment of the present invention is described in further detail.
A kind of steel cord adds untwisting device, comprise actinobacillus device, twisting mill 4, limit turns round guide wheel 6, untwister 5, false twist device 7, swage 8, take-up and wire-crossing wheel, described twisting mill 4 is the double twisting device of interior unwrapping wire, described untwister 5 is the double twisting device of interior take-up, described limit is turned round guide wheel 6 and is arranged between twisting mill 4 and untwister 5, described false twist device 7 and swage 8 are successively set between untwister 5 and take-up, cord 3 is successively through the I-beam wheel 1 of actinobacillus device, twisting mill 4, limit turns round guide wheel 6, untwister 5, false twist device 7, swage 8, the I-beam wheel 2 of take-up and the wire-crossing wheel arranged between them.
Shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, twisting mill 4 is the double twisting device of interior unwrapping wire, cord 3 is from unwrapping wire the I-beam wheel 1 of actinobacillus device, at A place without reversing, after twisting mill 4, torsion at B place is N1 time, twist with the fingers and twist with the fingers to for Z, according to the linearity situation of cord, number of torsions can be increased gradually, to reach the cord linearity of needs, 2 ~ 6 times of number of torsions N0 when the times N 1 adding torsion is generally the elasticity of torsion limit, wherein N0, N1 are the number of torsions of under identical cord length (as 1m).The situation that cord 3 after twisting launches in smooth horizontal plane as shown in Figure 3.
There is Residual torsion after adding torsion in cord, due to number of torsions N0 when the times N 1 adding torsion exceedes the elastic torsion limit, so the number of torsions N0 when Residual torsion number of times existed is approximately the elasticity of torsion limit.Cord 3, after limit turns round guide wheel 6, enters untwister 5; Untwister 5 is the double twisting device of interior take-up, twists with the fingers and twists with the fingers to for S; The backtwisting times N 2 of untwister 5 pairs of cords 3 approximates greatly the number of torsions N0 during elasticity of torsion limit; Wherein N0, N2 are the number of torsions of under identical cord length (as 1m).
To turn round guide wheel 6 extremely important for limit, if do not adopt limit to turn round guide wheel 6, cord adds to reverse and will synchronously carry out with detorsion, detorsion with add torsion and cancel out each other, detorsion is without the effect of elimination Residual torsion.Describe limit shown in composition graphs 1 and turn round the effect of guide wheel: cord 3 is through twisting mill 4(or untwister 5) after effect, there is torsion in cord self, and torsion constantly can be transmitted along cord self toward rear and front end, and cord is when limit turns round guide wheel 6, because cord and limit turn round the frictional force effect between guide wheel, the transmission that cord reverses will be prevented from largely, namely serves restriction cord and reverses the effect of transmitting.As in Fig. 1, the torsion of twisting mill 4 pairs of cords is transmitted to C point by B point, or in the process transmitted to B point by C point of the torsion of untwister 5 pairs of cords, all by limit turn round guide wheel limit, which ensure that and to twist and backtwisting can act on according to the torsion parameter set.If do not have limit to turn round guide wheel 6, because twisting and the sth. made by twisting of backtwisting are to contrary, cord 3 adds to reverse and will synchronously carry out with detorsion, detorsion and add torsion and cancel out each other, and detorsion is without the effect of elimination Residual torsion.
Limit is turned round guide wheel 6 and be can be used alone, as shown in Figure 7; Also can two with the use of, as shown in Figure 8; Well restriction cord can be played and reverse the effect of transmitting.
Cord 3 is after untwister 5 backtwisting, and the Residual torsion of cord 3 is discharged, and the situation that the cord 3 after backtwisting launches in smooth horizontal plane as shown in Figure 4.And then glacing flatness and Residual torsion, the finally take-up in the I-beam wheel 2 of take-up of cord is adjusted further through false twist device 7 and swage 8.Certainly according to circumstances, false twist device 7 and swage 8 can not adopt, or only adopt one of them.
Also can be that the sth. made by twisting of twisting mill 4 is twisted with the fingers to employing S in Fig. 2, simultaneously the sth. made by twisting of untwister 5 be twisted with the fingers to employing Z.
Shown in Figure 5, cord glacing flatness detection method: mark two at a distance of parallel lines one 9-1 and parallel lines one 9-2 that for 3cm, length are 6m in smooth horizontal plane; During detection, cut off the long cord 3-1 of 6m and be placed in parallel lines one 9-1 and parallel lines one 9-2 central authorities, if cord and parallel lines one 9-1 do not contact with parallel lines one 9-2 or non-intersect, think this cord glacing flatness≤3cm/6m.
Shown in Figure 6, cord Residual torsion detection method: during detection, first pull out from Receiving wire wheel 2-1 and cut off the long cord 3-2 of 6m, then a upwards curved right angle holding with a firm grip at cord end 50mm place, then continue, from Receiving wire wheel 2-1, cord 3-2 is pulled out 6m, decontrol cord 3-2 free end, it is allowed freely to turn round when not having tension force and frictional force, and record rotates revolution, direction of rotation and twisting mill are twisted with the fingers and are represented with "+" to identical, and difference represents with "-"; If rotate revolution to be less than 3 circles, then think this cord Residual torsion≤3T/6m.
The present invention is by twisting cord (adding torsion), changing cord surface residual stress is torsional shear stress, makes cord surface stress equilibrium, obtains linear cord, then backtwisting (detorsion) is carried out to cord, eliminate the Residual torsion produced when cord adds torsion; Cord glacing flatness≤the 3cm/6m, the Residual torsion≤3T/6m that obtain, can meet the production requirement at rubber cord.
Embodiment is just for the ease of understanding technical scheme of the present invention; do not form limiting the scope of the invention; every do not depart from technical solution of the present invention interior perhaps above scheme is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all still belong within scope.
Claims (4)
1. steel cord adds untwisting device, it is characterized in that: comprise actinobacillus device, twisting mill, limit turn round device, untwister, take-up and wire-crossing wheel, described limit is turned round device and is arranged between twisting mill and untwister, and described steel cord turns round device, untwister, the I-beam wheel of take-up and the wire-crossing wheel that arranges between them through the I-beam wheel of actinobacillus device, twisting mill, limit successively.
2. steel cord according to claim 1 adds untwisting device, it is characterized in that: described twisting mill is the double twisting device of interior unwrapping wire, and described untwister is the double twisting device of interior take-up.
3. steel cord according to claim 1 adds untwisting device, it is characterized in that: described limit is turned round device and is limited and turns round guide wheel.
4. the steel cord according to claim 1,2 or 3 adds untwisting device, it is characterized in that: described steel cord adds untwisting device and also comprises false twist device and swage, and described false twist device and swage are successively set between untwister and take-up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410595247.2A CN104358172A (en) | 2014-10-30 | 2014-10-30 | Steel cord twisting and untwisting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410595247.2A CN104358172A (en) | 2014-10-30 | 2014-10-30 | Steel cord twisting and untwisting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104358172A true CN104358172A (en) | 2015-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410595247.2A Pending CN104358172A (en) | 2014-10-30 | 2014-10-30 | Steel cord twisting and untwisting device |
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| CN (1) | CN104358172A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109323726A (en) * | 2018-11-09 | 2019-02-12 | 北京航天智造科技发展有限公司 | For detecting the automatic production line of steel cord Residual torsion |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06200491A (en) * | 1992-12-28 | 1994-07-19 | Bridgestone Metarufua Kk | Method for correcting steel cord and apparatus therefor |
| JP2007204894A (en) * | 2006-02-06 | 2007-08-16 | Kanai Hiroaki | Method for producing steel cord as tire reinforcing material |
| CN201525979U (en) * | 2009-10-10 | 2010-07-14 | 青岛三高自控设备研发有限公司 | Steel cord correction machine |
| CN102140767A (en) * | 2011-03-14 | 2011-08-03 | 湖北福星科技股份有限公司 | Bow straightener for meridian tire steel cord |
| CN103266514A (en) * | 2013-06-06 | 2013-08-28 | 上海南洋-藤仓电缆有限公司 | Device and method for untwisting steel wire rope |
| CN204311275U (en) * | 2014-10-30 | 2015-05-06 | 江苏兴达钢帘线股份有限公司 | Steel cord adds untwisting device |
-
2014
- 2014-10-30 CN CN201410595247.2A patent/CN104358172A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06200491A (en) * | 1992-12-28 | 1994-07-19 | Bridgestone Metarufua Kk | Method for correcting steel cord and apparatus therefor |
| JP2007204894A (en) * | 2006-02-06 | 2007-08-16 | Kanai Hiroaki | Method for producing steel cord as tire reinforcing material |
| CN201525979U (en) * | 2009-10-10 | 2010-07-14 | 青岛三高自控设备研发有限公司 | Steel cord correction machine |
| CN102140767A (en) * | 2011-03-14 | 2011-08-03 | 湖北福星科技股份有限公司 | Bow straightener for meridian tire steel cord |
| CN103266514A (en) * | 2013-06-06 | 2013-08-28 | 上海南洋-藤仓电缆有限公司 | Device and method for untwisting steel wire rope |
| CN204311275U (en) * | 2014-10-30 | 2015-05-06 | 江苏兴达钢帘线股份有限公司 | Steel cord adds untwisting device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109323726A (en) * | 2018-11-09 | 2019-02-12 | 北京航天智造科技发展有限公司 | For detecting the automatic production line of steel cord Residual torsion |
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Application publication date: 20150218 |
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