CN115652668A - High-permeability rubber engineering tire steel cord and production equipment thereof - Google Patents
High-permeability rubber engineering tire steel cord and production equipment thereof Download PDFInfo
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Abstract
The invention belongs to the technical field of steel cord production, and particularly relates to a steel cord for a high-permeability rubber engineering tire and production equipment thereof, and discloses a steel cord with a 7 x 16 structure, which comprises 1 central core strand and 6 outer layer strands uniformly surrounding the central core strand, has high fracture resistance, improves the corrosion resistance, the adhesive property and the adhesive retention of a tire, and also discloses steel cord production equipment for the high-permeability rubber engineering tire.
Description
Technical Field
The invention belongs to the technical field of steel cord production, and particularly relates to a steel cord for a high-permeability rubber engineering tire and production equipment thereof.
Background
The compact steel cord is a steel cord that twists all the steel filaments together in the same twist direction and with the same twist pitch, and can accommodate a large number of steel filaments within a limited cross-sectional area, thereby forming a compact cross-sectional configuration. The steel cord is the most widely developed product in rubber framework materials and the product with the greatest production difficulty in metal products. The definition of the international bureau of standardization for synthetic fibres in the standard for steel cords is: "a structure consisting of two or more steel filaments, or a combination of strands or filaments. Semi-steel radial tires are generally adopted for cars and light trucks, and all-steel radial tires are adopted for heavy-duty trucks and engineering machinery vehicles.
The Chinese invention patent CN105442362A, the name of which is seven-strand steel cord for engineering tire, the publication date is 20160330, discloses a seven-strand steel cord for engineering tire, which is formed by weaving and twisting steel wires, and comprises a core wire strand and an outer layer strand, wherein the seven-strand steel wire strand is additionally provided with a winding steel wire after being woven and twisted, and the twisting direction of the winding steel wire is S twisting; the seven strands of steel wire strands are twisted to form a structure in which six strands of outer-layer strands are uniformly distributed around the core wire strands, the twisting direction is Z-twist, and the cross section is circular; the core strand and the outer layer strand are formed by braiding and twisting five steel wires, and the twisting directions are S twisting. The steel cord has high strength, good puncture resistance and wear resistance, and reduces the specific gravity of the steel cord in a tire while improving the breaking force of the steel cord.
Chinese invention patent CN106320043A, named as seven-strand steel cord with structure of (1 +6+ 12) +6 x (1 +6+ 12), published as 20170111, discloses a seven-strand steel cord with structure of (1 +6+ 12) +6 x (1 +6+ 12), which is respectively twisted into a first layer by six steel wires around a core wire steel wire, and then 12 steel wires are uniformly arranged around the first layer to be twisted into a second layer in the same direction to form a central core strand and an outer layer; finally, the six outer layer strands are uniformly distributed around the central core strand and are twisted to form a steel cord with a circular section, wherein the strands of the first layer steel wire and the second layer steel wire of the central core strand and the outer layer strands are twisted in the same direction, and the diameters of the steel wires between layers are different, so that the rubber permeation is facilitated, and the corrosion resistance, the adhesion performance and the adhesion retention of the tire are improved; the manufactured steel cord has high strength, high bearing capacity and high rigidity, and is beneficial to maintaining the size of the outer edge of the tire; in addition, no outer winding wire is arranged on the outer side, so that the abrasion of the outer layer steel wire by the outer winding wire can be avoided, the service life of the tire is prolonged, the processing steps are reduced, and the cost is reduced.
The invention discloses a Chinese invention patent CN109957865A, which is named as a steel cord and has the publication date of 20190702, and discloses a steel cord for reinforcing rubber. The steel cord comprises a core strand and at least three outer strands twisted around the core strand, the core strand comprising at least one first core filament and a plurality of first outer filaments twisted around the first core filament, each outer strand comprising a plurality of second filaments, at least one first outer filament of the plurality of first outer filaments being preformed before being twisted into the core strand and at least one second steel filament of the second steel filaments being straight before being twisted to form each outer strand. The steel cord has improved properties in terms of core filament migration.
Compared with the prior art, the three-layer steel cord disclosed by the patent can effectively improve the penetration of rubber, thereby prolonging the fatigue life of the steel cord and improving the adhesive force, and on the basis, the invention provides a novel 7 multiplied by 16-structured high-permeability rubber steel cord for engineering tires, which is suitable for radial tires of giant engineering machinery.
In the existing steel cord production process, each layer of steel wire of the steel cord is produced in an independent vehicle platform respectively, the steel wires are transported to the final strand twisting vehicle platform in a centralized manner after being twisted into steel wire strands, each layer of steel cord strands are twisted into a steel cord finished product, the extra transfer transportation time occupies a large amount of production time, the production efficiency is reduced, and the traditional steel cord production equipment is large in occupied area, complex in structure and high in maintenance cost.
Disclosure of Invention
The invention provides a steel cord for a high-permeability rubber engineering tire, which adopts a 7 x 16 structure, is suitable for a radial tire of a giant engineering machine, has enough rigidity and strength, ensures that the giant engineering machine radial tire has enough bearing capacity and safety performance, and also discloses production equipment for producing the steel cord for the high-permeability rubber engineering tire, has a compact structure, integrates twisting of all layers of steel cords together, and solves the problems of large occupied area and low production efficiency of the traditional steel cord production equipment in the background technology.
The technical scheme of the invention is realized as follows: the utility model provides a hypertonic glue is steel cord for engineering child, includes 1 central core strand and evenly encircles 6 outer strands of central core strand, central core strand and outer strand all include 1 heart yearn steel wire and evenly center on by 5 middle level steel wires the heart yearn steel wire is compiled and is twisted with fingers the first layer steel wire that forms to and evenly center on by 10 outer steel wires compile second layer steel wire that twists with fingers and form around the first layer steel wire.
In a preferred embodiment, the core wire has a diameter D 0 The diameter of the middle layer steel wire is D 1 The diameter of the outer layer steel wire is D 3 The diameter of the twisted steel cord is D, and the twisted steel cord satisfies the following characteristics: d is more than or equal to 3.145mm and less than or equal to 3.476mm; d is more than or equal to 0.71 0 /D 1 ≤0.88；0.65≤D 0 /D 2 ≤0.8。
In a preferred embodiment, the middle layer steel wires and the outer layer steel wires are twisted in the same direction, and are Z-twisted.
In a preferred embodiment, the middle layer steel wires are twisted in the Z-twist direction, and the outer layer steel wires are twisted in the S-twist direction.
In a preferred embodiment, the diameter of the core wire is 0.17 ± 0.01mm, the diameter of the middle wire is 0.215 ± 0.01mm, and the diameter of the outer wire is 0.235 ± 0.01mm.
The invention also discloses steel cord production equipment which is used for producing the steel cord for the high-permeability rubber engineering tire and comprises 7 sets of twisting devices, each set of twisting device comprises a first prefabricating mechanism, a second prefabricating mechanism and a twisting mechanism, the twisting mechanism comprises a first disc and a second disc, the first prefabricating mechanism is connected with the first disc, the second prefabricating mechanism is connected with the second disc, the 7 twisting devices are connected with the same wire collecting device, the wire collecting device is connected with a twisting host machine, the twisting host machine is provided with a flywheel disc, and the flywheel disc is used for finally twisting steel cord folded wires.
As a preferred embodiment, the first prefabricating mechanism is provided with 6 groups, each group of the first prefabricating mechanism comprises a first pay-off spool with tension control, the first pay-off spool is connected with a first tension adjusting device, the first tension adjusting device is connected with a first wire passing wheel, the first wire passing wheel is connected with a first twisting device, the second prefabricating mechanism is provided with 10 groups of the second prefabricating mechanism, each group of the second prefabricating mechanism comprises a second pay-off spool with tension control, the second pay-off spool is connected with a second tension adjusting device, the second tension adjusting device is connected with a second wire passing wheel, and the second wire passing wheel is connected with a second twisting device.
As a preferred embodiment, the twisting mechanism includes a fixed frame, a motor support column, a first disk support frame and a second disk support frame are fixedly mounted in the fixed frame, a motor is mounted on the motor support column, the first disk is rotatably mounted on the first disk support frame, the second disk is rotatably mounted on the second disk support frame, the motor is disposed between the first disk and the second disk, the motor is connected with a transmission belt, the transmission belt drives the first disk and the second disk to rotate, the first disk is provided with 1 first central placing hole and 5 first edge placing holes uniformly surrounding the first placing hole, 6 sets of the first over-twisting devices are respectively connected with 1 first central placing hole and 5 first edge placing holes, the second disk is provided with 1 second central placing hole and 10 second edge placing holes uniformly surrounding the second central placing hole, 10 sets of the second over-twisting devices are respectively connected with 10 second edge placing holes, the first disk is provided with a first rack, one end of the first disk is connected with a second rack, and one end of the second disk is connected with a third rack, and the first end of the second disk is connected with a second rack, and the second rack is connected with a second rack.
As a preferred embodiment, the twisting mechanism includes a fixed frame, a motor support column, a first disk support frame and a second disk support frame are fixedly mounted in the fixed frame, a motor is mounted on the motor support column, the first disk is rotatably mounted on the first disk support frame, the second disk is rotatably mounted on the second disk support frame, the motor is disposed between the first disk and the second disk, the motor is connected with a transmission belt, the transmission belt drives the first disk and the second disk to rotate, the first disk is provided with 1 first central placing hole and 5 first edge placing holes uniformly surrounding the first placing hole, 6 sets of the first over-twisting devices are respectively connected with 1 first central placing hole and 5 first edge placing holes, the second disk is provided with 1 second central placing hole and 10 second edge placing holes uniformly surrounding the second central placing hole, 10 sets of the second over-twisting devices are respectively connected with 10 second edge placing holes, the first disk is provided with a first rack, one end of the first gear is connected with a second rack, and one end of the second gear is connected with a third gear, and the second gear is connected with a second rack, and the second gear is connected with a third gear.
As a preferred embodiment, the line-collecting device includes a line-distributing panel, the line-distributing panel is connected with a line-collecting nozzle, the line-collecting nozzle is connected with a pressing die, the flywheel panel is connected with a traction device, the traction device is connected with a second over-twisting device, the second over-twisting device is connected with a straightening device, and the straightening device is connected with a line-collecting spool.
After the technical scheme is adopted, the invention has the beneficial effects that:
the invention discloses a steel cord with a 7 x 16 structure, which comprises a middle layer steel wire twisting direction and an outer layer steel wire twisting direction which are Z twisting, and a middle layer steel wire twisting direction which is Z twisting and an outer layer steel wire twisting direction which is S twisting, wherein through a comparison experiment with the prior art, the 7 x 16 tight steel cord has high anti-breaking performance, can ensure that an elastomer or rubber penetrates between each single steel wire in the outer layer steel wire and the middle layer steel wire, improves the corrosion resistance, the adhesive property and the adhesive holding power of a tire, and can meet the performance requirements of an engineering mechanical tire;
the invention also discloses production equipment for producing the 7 x 16 structural steel cord, which realizes synchronous twisting of the first layer of steel wires and the second layer of steel wires by arranging the first prefabricating mechanism, the second prefabricating mechanism and the twisting mechanism, wherein the twisting mechanism quickly changes the twisting directions of the first layer of steel wires and the second layer of steel wires by changing the driving connection of the driving belt and the first gear or the second gear, so that the same-direction or different-direction twisting of the first layer of steel wires and the second layer of steel wires is realized;
through setting up the system of twisting with fingers mechanism, twist with the first layer steel wire and make the back, can twist with second floor steel wire and first layer steel wire into the steel cord on same system of twisting with fingers ride, go on the two sets at same ride, practiced thrift production facility's occupation space, avoided the transport of first layer steel wire and second floor steel wire, improved production efficiency, practiced thrift the cost.
Drawings
FIG. 1 is a schematic structural view of a steel cord for a high-permeability rubber engineering tire according to the present invention;
FIG. 2 is comparative test data for a first embodiment of the present invention and comparative example 1;
FIG. 3 is comparative test data for a second example of the present invention and comparative example 2;
FIG. 4 is comparative test data for the first embodiment of the present invention with the third, fourth, comparative 3 and comparative 4 examples;
FIG. 5 is comparative test data for the first example of the present invention with a fifth example, a sixth example, comparative example 5, and comparative example 6;
FIG. 6 is comparative test data for the first embodiment of the present invention with the seventh, eighth, comparative examples 7 and comparative examples 8;
FIG. 7 is a schematic structural diagram of a steel cord production apparatus for a high-permeability rubber engineering tire according to the present invention;
FIG. 8 is a schematic view of the twisting apparatus according to the present invention;
FIG. 9 is a schematic view of a first prefabrication mechanism according to the invention;
FIG. 10 is a schematic view of a second prefabrication mechanism according to the invention;
FIG. 11 is a schematic view of the twisting mechanism according to the present invention;
FIG. 12 is an enlarged view of a portion of the first embodiment of the present invention at A in FIG. 11;
FIG. 13 is an enlarged fragmentary view of the second embodiment of the invention at A in FIG. 11;
FIG. 14 is a schematic structural view of a twisting machine according to the present invention.
In the figure, 100-steel cord; 110-a central core strand; 120-outer ply; 101-core wire; 102-middle layer steel wire; 103-outer layer steel wire; 2-a twisting device; 21-a first prefabrication mechanism; 211-a first payoff spool; 212-first tension adjustment means; 213-a first wire passing wheel; 214-a first over-twisting device; 22-a second prefabrication mechanism; 221-a second payoff spool; 222-a second tensioning device; 223-a second wire passing wheel; 224-a second over-twisting device; 23-a twisting mechanism; 231-a first disc; 2311-a first central placement hole; 2312-first edge placement holes; 2313-first rack; 232-a second disc; 2321-second centrally placed hole; 2322-second edge placement holes; 2323-second rack; 233-fixed frame; 234-motor support column; 2351-a first disc support frame; 2352-a second disc support frame; 236-a motor; 2361-drive gear; 237-a drive belt; 238-a first gear; 239-a second gear; 2310-third gear; 3-a line concentration device; 31-a distribution board; 32-a line concentration nozzle; 33-pressing the mould; 4-twisting the main frame; 41-flywheel disc; 42-a traction device; 43-a second over-twisting device; 44-straightening device; 45-take-up spool.
Detailed Description
The invention will be described in detail with reference to the following drawings, which are provided for illustration purposes and the like:
as shown in fig. 1, a steel cord for a high-permeability rubber engineering tire comprises 1 central core strand 110 and 6 outer strands 120 uniformly surrounding the central core strand 110, wherein each of the central core strand 110 and the outer strands 120 comprises 1 core wire steel wire 101, a first layer of steel wires formed by uniformly weaving and twisting 5 middle layer steel wires 102 around the core wire steel wire 101, and a second layer of steel wires formed by uniformly weaving and twisting 10 outer layer steel wires 103 around the first layer of steel wires, and the finally woven and twisted steel cord for a high-permeability rubber engineering tire is 7 × 16.
In the first embodiment of the present invention, the middle layer steel wires 102 and the outer layer steel wires 103 are twisted in the same direction, i.e., Z-twist, and the core wire 101 has a diameter D 0 The diameter of the middle layer steel wire 102 is D 1 The diameter of the outer layer steel wire 103 is D 3 The diameter of the twisted steel cord is D, and the twisted steel cord satisfies the following characteristics: d is more than or equal to 3.145mm and less than or equal to 3.476mm, D is more than or equal to 0.71 and less than or equal to D 0 /D 1 ≤0.88，0.65≤D 0 /D 2 Less than or equal to 0.8, wherein the diameter of the core wire steel wire 101 is 0.17 plus or minus 0.01mm, the diameter of the middle layer steel wire 102 is 0.215 plus or minus 0.01mm, the diameter of the outer layer steel wire 103 is 0.235 plus or minus 0.01mm, the twisting distance of the core wire steel wire 101 and the middle layer steel wire 102 is 15.00 plus or minus 0.75mm, and the twisting distance of the middle layer steel wire 102 and the outer layer steel wire 103 is 33.00 plus or minus 1.65mm.
In the second embodiment of the present invention, the twisting direction of the middle layer steel wires 102 is Z-twist, the twisting direction of the outer layer steel wires 103 is S-twist, and the diameter of the core steel wire 101 is D 0 The diameter of the middle layer steel wire 102 is D 1 The diameter of the outer layer steel wire 103 is D 3 The diameter of the twisted steel cord is D, and the twisted steel cord satisfies the following characteristics: d is more than or equal to 3.145mm and less than or equal to 3.476mm, D is more than or equal to 0.71 and less than or equal to D 0 /D 1 ≤0.88，0.65≤D 0 /D 2 Less than or equal to 0.8, wherein the diameter of the core wire steel wire 101 is 0.17 plus or minus 0.01mm, the diameter of the middle layer steel wire 102 is 0.215 plus or minus 0.01mm, the diameter of the outer layer steel wire 103 is 0.235 plus or minus 0.01mm, the twisting distance of the core wire steel wire 101 and the middle layer steel wire 102 is 15.00 plus or minus 0.75mm, and the twisting distance of the middle layer steel wire 102 and the outer layer steel wire 103 is 28.00 plus or minus 1.40mm.
Referring to fig. 2, using a steel cord of a prior art structure of 7 x (1 +6+ 12) as a comparative example, in which comparative example 1 employs a Z/Z twisting direction and comparative example 2 employs a Z/S twisting direction, a comparative experiment was performed on a first example of several sets of the inventive 7 x 16 structural steel cords with comparative example 1, and a comparative experiment was performed on a second example of several sets of the inventive 7 x 16 structural steel cords with comparative example 2, referring to fig. 3.
Selecting a sample: the steel cord of the invention with 7X 16 structure 1m is selected according to the cutting length of the customer cord fabric.
And selecting the steel cords with the same specification in the existing products according to the specification of the test sample of the product to sample.
The samples of the first and second examples of the 7 x 16 structural steel cord of the present invention and the prior art were subjected to breaking force, adhesive property and air pressure drop (bleed rate test), respectively, and the data in the table are average values obtained from multiple experiments using different samples under the same parameters:
selecting a sample: the test is carried out on the product sample by selecting a 7X 16 steel cord with the length of 1m. And selecting a steel cord with almost the same specification in the prior art according to the specification of the sample of the product to sample.
(1) Breaking force test: and selecting 6 7 multiplied by 16 steel cord samples and samples in the prior art to carry out multiple breaking force detection experiments, wherein the length of each experimental sample is 1m.
(2) Adhesion performance test: selecting a 7X 16 steel cord test sample and a prior art test sample, wherein 5 sections (for example, a test sample a is a1, a2, a3, a4 and a5 respectively) are melted for each test sample, the length is about 1m, the test samples are ensured not to loose heads, and the selected test samples are worn with gloves to prevent the samples from being polluted. It should be noted that when the 5-stage sample is subjected to a vulcanization test, the sample is in contact with the rubber (the embedded depth is 25 mm), and the arrangement order of the sample in the mold requires reference to the test method.
(3) Glue permeation rate test experiment: A7X 16 steel cord specimen and a prior art specimen were selected, and 3 specimens each having a length of about 300mm were cut out.
In the experiment, the breaking tension experiment refers to a steel cord test method GB/T33159-2016 and an experimental equipment INSTRON3365 tension machine; the adhesive property test refers to a steel cord test method GB/T33159-2016, and experimental equipment such as an open rubber mixing mill, a plate vulcanizing machine and an INSTRON3365 tensile machine; the experimental method refers to the air pressure drop machine operation manual, and the experimental equipment is an air pressure drop machine.
Figure 2 summarizes the test data of the first embodiment test specimen of the structural steel cord of the invention and the test specimen of the prior art.
Figure 3 summarizes the test data of the second embodiment test piece of the inventive 7 x 16 structural steel cord and the test piece of the prior art.
As can be seen from the data of fig. 2 and 3, the first and second embodiments of the 7 × 16 structural steel cord of the present invention have better coating ratio, air pressure drop and adhesion force than the prior art, and a breaking force is slightly higher than the prior art.
Referring to FIG. 4, a first embodiment of the structural steel cord of the present invention with a 7X 16 core wire 101 of a modified diameter D is shown 0 The data of the third, fourth, comparative and comparative examples 3 and 4 were obtained by performing the breaking force, adhesive property and air pressure drop (bleeding rate test), and the data in fig. 4 are average values obtained by performing a plurality of experiments using different samples under the same parameters.
As shown in FIG. 5, for the first embodiment of the 7X 16 structural steel cord of the present invention and the change of the diameter D of the middle steel wire 102 1 The obtained fifth, sixth, comparative examples 5 and 6 were subjected to breaking force, adhesive property and air pressure drop (bleed rate test), and the data in fig. 5 were average values obtained from a plurality of experiments using different samples under the same parameters.
Referring to FIG. 6, a first embodiment of the 7X 16 structural steel cord of the present invention is constructed by changing the diameter D of the outer layer steel filaments 103 3 The obtained seventh example, eighth example, comparative example 7 and comparative example 8 were subjected to breaking force, adhesive property and air pressure drop (bleed rate test), and the data in fig. 6 are average values obtained by multiple experiments using different samples under the same parameters.
As can be seen from the data shown in fig. 4 to fig. 6, the diameter of each layer of steel wire has a significant influence on the performance of the steel cord, wherein the diameter of the core wire 101 of the 7 × 16 structural steel cord of the present invention is 0.17 ± 0.01mm, the diameter of the middle layer of steel wire 102 is 0.215 ± 0.01mm, and the diameter of the outer layer of steel wire 103 is in the range of 0.235 ± 0.01mm, and the 7 × 16 structural steel cord can obtain the optimal overall performance in terms of breaking tension, coating rate, air pressure drop, adhesion force, etc.
As shown in the attached drawings 7 to 14, the invention also discloses a production device of the steel cord for the high-permeability rubber engineering tire, which is used for producing the steel cord for the high-permeability rubber engineering tire and comprises 7 groups of twisting devices 2, each group of twisting devices 2 comprises a first prefabricating mechanism 21, a second prefabricating mechanism 22 and a twisting mechanism 23, the 7 twisting devices 2 are connected with a yarn collecting device 3, and the yarn collecting device 3 is connected with a twisting host machine 4.
The first prefabricating mechanism 21 is provided with 6 groups, each group of first prefabricating mechanisms 21 comprises a first paying-off spool 211 with tension control, the first paying-off spool 211 is connected with a first tension adjusting device 212, the first tension adjusting device 212 is connected with a first wire passing wheel 213, the first wire passing wheel 213 is connected with a first over-twisting device 214, the first paying-off spool 211 and the first tension adjusting device 212 are used for controlling the tension stability of steel wires in the twisting process, the paying-off state of each steel wire is guaranteed to be consistent, and the first wire passing wheel 213 is used for guiding the steel wires to the first over-twisting device 214.
The second prefabricating mechanism 22 is provided with 10 groups, the structure of the second prefabricating mechanism 22 is the same as that of the first prefabricating mechanism 21, each group of second prefabricating mechanism 22 comprises a second paying-off spool 221 with tension control, the second paying-off spool 221 is connected with a second tension adjusting device 222, the second tension adjusting device 222 is connected with a second wire passing wheel 223, the second wire passing wheel 223 is connected with a second twisting device 224, the second paying-off spool 221 and the second tension adjusting device 222 are used for controlling the tension stability of steel wires in the twisting process and ensuring the paying-off state of each steel wire to be consistent, and the second wire passing wheel 223 is used for guiding the steel wires to the second twisting device 224.
The first over-twisting device 214 and the second over-twisting device 224 reduce the residual torsion of the steel wire through high-speed rotation of the over-twisting wheel, namely, the steel wire generates certain plastic deformation through approaching or reaching the yield strength of the steel wire, the residual stress of the steel wire generated due to elastic deformation is eliminated, and the rotating speed of the first over-twisting device 214 and the second over-twisting device 224 is less than or equal to 7000rpm.
Further, core wire steel wires 101 are wound on the first wire spool 211 of 1 group of the first prefabricating mechanism 21, middle layer steel wires 102 are wound on the first wire spool 211 of the other 5 groups of the first prefabricating mechanism 21, and outer layer steel wires 103 are wound on the second wire spool 221 of 10 groups of the second prefabricating mechanism 22, so that the core wire steel wires 101 and the middle layer steel wires 102 can be prefabricated through the corresponding first prefabricating mechanism 21, the outer layer steel wires 103 can be prefabricated through the second prefabricating mechanism 22, and the core wire steel wires 101, the middle layer steel wires 102 and the outer layer steel wires 103 enter the twisting mechanism 23 after being prefabricated.
As shown in fig. 11, the twisting mechanism 23 includes a fixed frame 233, a motor support column 234, a first disc support frame 2351 and a second disc support frame 2352 are fixedly installed in the fixed frame 233, a motor 236 is installed on the motor support column 234, the motor 236 is installed between the first disc 231 and the second disc 232, a drive gear 2361 is fixedly connected to a drive rod of the motor 236, a transmission belt 237 is engaged with the drive gear 2361, so that the motor 236 can drive the transmission belt 237 to rotate through the drive gear 2361, the first disc 231 is rotatably installed on the first disc support frame 2351, the second disc 232 is rotatably installed on the second disc support frame 2352, a first rack 2313 is circumferentially arranged on the first disc 231, a first gear 238 is engaged with the first rack 2313, a second gear 239 is engaged with the first gear 238, a second rack 2323 is circumferentially arranged on the second disc 232, a third gear 2310 is engaged with the second rack 2323, and the transmission belt 237 drives the first disc 231 and the second disc 232 to rotate through the first gear 238, the second gear 239 and the third gear 2310.
The first disk 231 is provided with 1 first center placing hole 2311 and 5 first edge placing holes 2312 uniformly surrounding the first placing hole 2311, 6 groups of the first over-twisting devices 214 are respectively connected with 1 first center placing hole 2311 and 5 first edge placing holes 2312, the second disk 232 is provided with 1 second center placing hole 2321 and 10 second edge placing holes 2322 uniformly surrounding the second center placing hole 2321, 10 groups of the second over-twisting devices 224 are respectively connected with 10 second edge placing holes 2322, so that the core wire 101 passes through the first center placing holes 2311,5 middle layer wires 102 respectively pass through 5 first edge placing holes 2312, the core wire 101 and the 5 middle layer wire outer layers 102 are made into first layer wires by rotation of the first disk 231, the first layer wires pass through the second center placing holes 2321, and the 10 outer layer wires 103 pass through 10 second edge placing holes 2322, respectively, and the first layer wires 103 and the second layer wires 103 are made into second layer wires 2322 by rotation of the second disk 231.
As shown in fig. 12, in the first embodiment of the steel cord production equipment for the high-permeability rubber project tire disclosed by the invention, one end of the transmission belt 237 close to the first disc 231 is in driving connection with the first gear 238, and one end of the transmission belt 237 close to the second disc 232 is in driving connection with the third gear 2310. In this embodiment, the motor 236 drives the first gear 238 and the third gear 2310 to rotate in the same direction through the transmission belt 237, and then the first disc 231 and the second disc 232 can be driven to rotate in the same direction, and by rotating the first disc 231 and the second disc 232 in the same direction, the same-direction twisting of the first layer steel wires and the second layer steel wires can be realized, and by setting the rotation direction of the motor 236, 5 middle layer steel wires 102 can be twisted into the first layer steel wires around 1 middle layer steel wire 102 in the Z direction, and 10 outer layer steel wires 103 can also be twisted into the second layer steel wires around the first layer steel wires in the Z direction, so as to form a steel cord strand with Z-twist directions both of the first layer steel wires and the second layer steel wires.
As shown in fig. 13, in the second embodiment of the steel cord production equipment for the high-permeability rubber project tire disclosed by the invention, one end of the transmission belt 237 close to the first disc 231 is in driving connection with the second gear 239, and one end of the transmission belt 237 close to the second disc 232 is in driving connection with the third gear 2310. In this embodiment, the motor 236 drives the second gear 239 and the third gear 2310 to rotate in the same direction through the belt 237, and since the second gear 239 is meshed with the first gear 238, the rotation directions of the first gear 238 and the third gear 2310 are opposite, so that the motor 236 can drive the first disc 231 and the second disc 232 to rotate in opposite directions, and reverse twisting of the first layer of steel wires and the second layer of steel wires can be realized through reverse rotation of the first disc 231 and the second disc 232, and the rotation direction of the motor 236 is set, so that 5 middle layer of steel wires 102 can be twisted around 1 middle layer of steel wires 102 in the Z direction to form a first layer of steel wires, 10 outer layer of steel wires 103 can be twisted around the first layer of steel wires in the S direction to form a second layer of steel wires, and thus the twisting direction of the first layer of steel wires is Z twisting, and the twisting direction of the second layer of steel wires is S twisting steel cord.
As shown in fig. 7, the yarn collecting device 3 includes a yarn distributing plate 31, the yarn distributing plate 31 is connected with a yarn collecting nozzle 32, the yarn collecting nozzle 32 is connected with a pressing die 33, 7 strands twisted by 7 sets of twisting devices 2 are uniformly distributed on the yarn distributing plate 31 and then converged at the yarn collecting nozzle 32, the yarn collecting nozzle 32 and the pressing die 33 are selected according to the specification of the finished cord, and the strands are collected together and then enter the main machine 4.
As shown in fig. 14, the twisting main machine 4 includes a flywheel disc 41, the flywheel disc 41 is connected with a traction device 42, the traction device 42 is connected with a second over-twisting device 43, the second over-twisting device 43 is connected with a straightening device 44, the straightening device 44 is connected with a take-up spool 45, a plurality of strands are finally twisted by the rotation of the flywheel disc 41, the twisted strands enter the second over-twisting device 43 under the traction action of the traction device 42, the over-twisting wheel in the second over-twisting device 43 rotates at a high speed, the residual torque generated during twisting of the strands is reduced until the residual stress generated by elastic deformation of the strands is eliminated, the strands are straightened by the straightening device 44, and finally the strands are wound on the take-up spool 45.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a hypertonic glue is steel cord for engineering child, its characterized in that includes 1 central core thigh (110) and evenly encircles 6 outer thigh (120) of central core thigh (110), central core thigh (110) and outer thigh (120) all include 1 heart yearn steel wire (101) and evenly center on by 5 middle level steel wire (102) first layer steel wire that heart yearn steel wire (101) were compiled and are twisted with fingers and form to and evenly center on by 10 outer steel wire (103) compile second layer steel wire that twists with fingers and form around the first layer steel wire.
2. A steel cord for a high-permeability rubber engineering tire according to claim 1, characterized in that the diameter of the core steel wire (101) is D 0 The diameter of the middle layer steel wire (102) is D 1 The diameter of the outer layer steel wire (103) is D 3 The diameter of the twisted steel cord is D, and the twisted steel cord satisfies the following characteristics:
3.145mm≤D≤3.476mm；
0.71≤D 0 /D 1 ≤0.88；
0.65≤D 0 /D 2 ≤0.8。
3. a steel cord for a high permeability rubber engineered tire according to claim 2, characterized in that the middle layer steel wire (102) and the outer layer steel wire (103) have the same twisting direction and are both Z-twisted.
4. A steel cord for a high permeability rubber engineered tire according to claim 2, characterized in that the direction of twist of the middle layer steel wires (102) is Z twist and the direction of twist of the outer layer steel wires (103) is S twist.
5. A steel cord for a high seep rubber engineered tire according to claim 3 or 4, characterized in that the diameter of the core steel wire (101) is 0.17 ± 0.01mm, the diameter of the middle steel wire (102) is 0.215 ± 0.01mm, and the diameter of the outer steel wire (103) is 0.235 ± 0.01mm.
6. A steel cord production facility for a high-permeability rubber engineering tire is used for producing the steel cord for the high-permeability rubber engineering tire as claimed in any one of claims 1 to 6, and is characterized by comprising 7 sets of twisting devices (2), wherein each set of twisting device (2) comprises a first prefabricating mechanism (21), a second prefabricating mechanism (22) and a twisting mechanism (23), each twisting mechanism (23) comprises a first disc (231) and a second disc (232), the first prefabricating mechanism (21) is connected with the first disc (231), the second prefabricating mechanism (22) is connected with the second disc (232), 7 twisting devices (2) are connected with the same wire collecting device (3), the wire collecting device (3) is connected with a twisting main machine (4), the twisting main machine (4) is provided with a flywheel disc (41), and the flywheel disc (41) is used for final twisting of steel cords.
7. The production equipment of the steel cord for the high-permeability rubber engineering tire according to claim 6, wherein the first prefabricating mechanism (21) is provided with 6 groups, each group of the first prefabricating mechanism (21) comprises a first paying-off spool (211) with tension control, the first paying-off spool (211) is connected with a first tension adjusting device (212), the first tension adjusting device (212) is connected with a first wire passing wheel (213), the first wire passing wheel (213) is connected with a first over-twisting device (214), the second prefabricating mechanism (22) is provided with 10 groups, each group of the second prefabricating mechanism (22) comprises a second paying-off spool (221) with tension control, the second paying-off spool (221) is connected with a second tension adjusting device (222), the second tension adjusting device (222) is connected with a second wire passing wheel (223), and the second wire passing wheel (223) is connected with a second over-twisting device (224).
8. The production equipment of a steel cord for high-permeability rubber engineering tire according to claim 7, wherein the twisting mechanism (23) comprises a fixed frame (233), a motor support column (234), a first disc support frame (2351) and a second disc support frame (2352) are fixedly installed in the fixed frame (233), a motor (236) is installed on the motor support column (234), the first disc (231) is rotatably installed on the first disc support frame (2351), the second disc (232) is rotatably installed on the second disc support frame (2352), the motor (236) is arranged between the first disc (231) and the second disc (232), the motor (236) is in driving connection with a transmission belt (237), the transmission belt (237) drives the first disc (231) and the second disc (235232) to rotate, the first disc (231) is provided with 1 first central placing hole (1) and 5 first edge placing holes (2) uniformly surrounding the first placing hole (2311), the first edge placing hole (2326) is in connection with the second edge placing hole (2321), and the second edge placing hole (2312) is uniformly connected with the second edge placing hole (2321), 10 sets of the second over-twisting devices (224) are respectively connected with 10 second edge placement holes (2322), a first rack (2313) is arranged on the first disc (231) along the circumferential direction, a first gear (238) is connected with the first rack (2313) in a meshing manner, a second gear (239) is connected with the first gear (238) in a meshing manner, a second rack (2323) is arranged on the second disc (232) along the circumferential direction, a third gear (2310) is connected with the second rack (2323) in a meshing manner, one end, close to the first disc (231), of the driving belt (237) is in driving connection with the first gear (238), and one end, close to the second disc (232), of the driving belt (237) is in driving connection with the third gear (2310).
9. The apparatus for producing a steel cord for a high-permeability rubber engineering tire according to claim 7, wherein the twisting mechanism (23) comprises a fixed frame (233), a motor support column (234), a first disc support frame (2351) and a second disc support frame (2352) are fixedly installed in the fixed frame (233), a motor (236) is installed on the motor support column (234), the first disc (231) is rotatably installed on the first disc support frame (2351), the second disc (232) is rotatably installed on the second disc support frame (2352), the motor (236) is disposed between the first disc (231) and the second disc (232), the motor (236) is in driving connection with a driving belt (237), the driving belt (237) drives the first disc (231) and the second disc (232) to rotate, the first disc (231) is provided with 1 first central placement hole (1) and 5 first edge placement holes (2) uniformly surrounding the first placement hole (2311), the first edge placement hole (2316) is provided with 5 first edge placement holes (2322) uniformly surrounding the first edge placement hole (2311), the second edge placement hole (2312) is provided with a second edge placement hole (2312), and the second edge placement hole (2312) is provided with a second edge placement hole (2325) surrounding the second edge placement hole (2312) and the second edge placement hole (2312) is provided with a uniform placement hole (2322) surrounding the first edge placement hole respectively, 10 sets of the second over-twisting devices (224) are respectively connected with 10 second edge placement holes (2322), a first rack (2313) is arranged on the first disc (231) along the circumferential direction, a first gear (238) is connected with the first rack (2313) in a meshing manner, a second gear (239) is connected with the first gear (238) in a meshing manner, a second rack (2323) is arranged on the second disc (232) along the circumferential direction, a third gear (2310) is connected with the second rack (2323) in a meshing manner, one end, close to the first disc (231), of the driving belt (237) is in driving connection with the second gear (239), and one end, close to the second disc (232), of the driving belt (237) is in driving connection with the third gear (2310).
10. The production equipment of the steel cord for the hypertonic glue engineering tire according to claim 6, wherein the wire collecting device (3) comprises a wire distributing disc (31), the wire distributing disc (31) is connected with a wire collecting nozzle (32), the wire collecting nozzle (32) is connected with a pressing die (33), the flywheel disc (41) is connected with a traction device (42), the traction device (42) is connected with a second over-twisting device (43), the second over-twisting device (43) is connected with a straightening device (44), and the straightening device (44) is connected with a wire collecting spool (45).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211281291.7A CN115652668A (en) | 2022-10-19 | 2022-10-19 | High-permeability rubber engineering tire steel cord and production equipment thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211281291.7A CN115652668A (en) | 2022-10-19 | 2022-10-19 | High-permeability rubber engineering tire steel cord and production equipment thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115652668A true CN115652668A (en) | 2023-01-31 |
Family
ID=84988836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211281291.7A Pending CN115652668A (en) | 2022-10-19 | 2022-10-19 | High-permeability rubber engineering tire steel cord and production equipment thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115652668A (en) |
-
2022
- 2022-10-19 CN CN202211281291.7A patent/CN115652668A/en active Pending
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