CN109775405B - Method for correcting pressure of double-roller friction type passive winding device for winding impregnated cord fabric - Google Patents
Method for correcting pressure of double-roller friction type passive winding device for winding impregnated cord fabric Download PDFInfo
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Abstract
The invention discloses a correction method for the pressure of a double-roller friction type passive winding device for winding impregnated cord fabric, which corrects the coefficient k through the quality of the wound cord fabriczOr the correction factor kzAnd the correction coefficient D of the diameter of the winding cord fabric rollxThe acting force between the cord fabric and the winding roller in the winding process is corrected, so that the cord fabric is properly stressed in the winding process. The invention passes the correction coefficient kzAnd DxThe pressure F of the cord fabric roll and the winding roller in the normal direction of the tangent point position can be set to be proper under the condition of different diameters of the cord fabric rolltThe method has the advantages that the difference of the density and the width of the inner and outer fabric rolls can not be caused in the process of winding the cord fabric, the generation of radial stripes on the two side surfaces of the fabric rolls is reduced, the problem of more waste materials of the calendered rubber cord fabric caused by poor package forming of the cord fabric is also reduced, the generation of waste materials is reduced, and the later use of the cord fabric is very facilitated.
Description
Technical Field
The invention relates to the technical field of cord fabrics, in particular to a method for correcting the pressure of a double-roller friction type passive winding device for winding impregnated cord fabrics.
Background
The dipped cord fabric is an important framework material of the tire, and the winding quality of the dipped cord fabric not only influences the appearance of a fabric roll, but also has a great influence on the processability of the subsequent tire manufacturing process.
Currently, dipped cord fabrics are generally wound by a two-roll friction type passive winding device, as shown in fig. 1. During the winding process, the upper hydraulic pressure and the lower hydraulic pressure of the hydraulic cylinder are adjusted, a vertically upward or vertically downward force is applied to the cloth roll through the ejector pin of the winding machine so as to change the pressure of the cloth roll on the winding roller and further change the winding forming of the cloth roll, and the vertically upward or vertically downward force applied by the ejector pin can be provided by the hydraulic cylinder, the air cylinder or the motor of the driving mechanism. The pressure of the cloth roll to the winding roller is changed along with the length of the cloth roll and the diameter of the cloth roll, and the cloth roll pressure control device is suitable for different devices.
In the prior art, when the force applied by the thimble is provided by a hydraulic cylinder or an air cylinder, in the process of winding the cord fabric, the hydraulic pressure or the air pressure at the upper part of the hydraulic cylinder or the air cylinder is generally kept constant, and the hydraulic pressure or the air pressure at the lower part is increased to generate a vertical upward force to counteract the gravity generated along with the gradual increase of the diameter of the cord fabric roll so as to keep the pressure of the roll on the winding roller in the vertical direction unchanged. Therefore, the upward force of the lower hydraulic or pneumatic cylinder needs to be changed continuously with the gradual increase of the weight of the cloth roll (i.e. the upward force provided by the driving mechanism is changed continuously with the gradual increase of the weight of the cloth roll), and in the prior art, the lower hydraulic or pneumatic pressure of the hydraulic or pneumatic cylinder providing the upward force is calculated as follows:
P＝P0+L×m0×g÷(SL÷104)÷106
the following problems exist with this formula: during the winding process, the cloth roll is pressed to the normal direction of the winding roller at the tangent point position by a pressure FtIncreases with the increase of the diameter of the wound cloth roll as shown in figure 2 (F)dI.e. the pressure of the cloth web against the winding roller in the vertical direction), at F)tAlong with the effect of diameter continuous increase, the yardage roll outer layer bulk density is great than the inlayer bulk density, the inlayer receives excessive extrusion, and this kind of extrusion effect can obviously increase when yardage roll diameter is great, causes the width difference of yardage roll inner and outer layer width great, causes the width difference grow of inlayer yardage roll promptly, yardage roll deformation, and the yardage roll both ends side has obvious radial stripe simultaneously. When the diameter of the cloth roll is 1.1m, the width difference of the cloth width of the inner layer and the outer layer of the cloth roll can reach 11cm, and the depth of the radial stripes can reach 0.5 cm. Therefore, the lower pressure of the hydraulic cylinder is determined by adopting the formula, and the determined pressure of the fabric roll on the winding roller can cause obvious deformation of the cord fabric roll, influence later use of the cord fabric and obviously increase waste materials generated in the calendering process.
Disclosure of Invention
The invention aims at the technical problems that: the prior art determines the method of the roll to the rolling force of the winding roller, which can cause the obvious deformation of the dipped cord fabric in the roll, cause the bad phenomena of different widths of the outer layer fabric in the cord fabric roll, and the like, and cause the problems of more waste material of the calendered rubber cord fabric, influence on the later use of the cord fabric, and the like due to the bad roll forming.
In order to solve the problems, the invention provides a pressure correction method for winding the dipped cord fabric by a double-roller friction type passive winding device, which is characterized in that after a correction coefficient is introduced and the upward driving force of the cord fabric in the dipped cord fabric winding device is corrected, the pressure of a cloth roll on a winding roller is reduced along with the increase of the diameter of the cloth roll, particularly the relation of fast descending and slow descending is realized, the deformation of the wound cord fabric can be effectively weakened, the width difference of the inner layer and the outer layer of the dipped cord fabric is reduced, the depth of radial stripes on the side surface is reduced, and the problem that the dipped cord fabric is rolled to have more waste materials due to poor package forming is solved. The pressure applied to the inside of the cord fabric in the winding process cannot increase along with the increase of the diameter of the fabric roll, the width difference of the inner layer and the outer layer of the cord fabric is reduced, and the depth of the radial stripes on the side surface is obviously reduced.
The invention relates to a correction method for the pressure of a double-roller friction type passive winding device for winding impregnated cord fabric, which is realized by the following technical scheme, wherein the impregnated cord fabric winding device comprises a bracket, a vertical driving mechanism fixed by the bracket, a thimble connected with the lower end of the vertical driving mechanism, a reel supported by the thimble, and winding rollers arranged at the left lower part and the right lower part of the reel, wherein the winding rollers are driving rollers and drive the reel to rotate by friction; the lower end of the vertical driving mechanism drives the scroll to move up and down through the thimble; the vertical driving mechanism is a hydraulic cylinder or an air cylinder;
the correction method is realized by correcting the hydraulic pressure or air pressure at the lower part of a hydraulic cylinder or an air cylinder, and comprises the following steps:
s1: obtaining correction coefficient of cord fabric roll quality in cord fabric winding device
kz＝kz,n-(kz,n-kz,n+1)×[mod(L×m0,100)/100](1)
In the formula, kzAccording to the quality value of the cord fabric wound on the reel of the winding machine, each 100Kg of cord fabric is wound with different kzValue (i.e. k per 100Kg of cord fabric woundzThe value changes once. ) N is 0,1,2,3,4 … … n, n +1, when the weight of the wound cord fabric roll is 0Kg, n is 0; when the mass of the wound cord fabric roll is 100Kg, n is 1; when the mass of the wound cord fabric roll is 200Kg, n is 2; when the mass of the wound cord fabric roll is 300Kg, n is 3; … …, respectively; l represents the length of the cord fabric wound on the reel, m0Represents the mass per unit length of the cord fabric roll wound on the reel; mod (Lxm)0100) quality of the wound cord fabric rollL×m0The remainder of the division by 100;
s2: correction formula for obtaining hydraulic pressure or air pressure of hydraulic cylinder or lower part of air cylinder in cord fabric winding device
P＝P0+kz×L×m0×g÷(SL÷104)÷106(2)
Wherein P represents output data of hydraulic pressure or air pressure of the lower part of the hydraulic cylinder or the air cylinder, and P0A set value (said set value is determined according to different cord fabric types, total roll length of different cord fabric rolls and different roll densities), k, representing the hydraulic pressure or air pressure of the lower part of the initial hydraulic cylinder or air cylinderzA correction factor representing the quality of the roll, L representing the length of cord fabric wound on the reel, m0Representing the mass per unit length of cord fabric wound on a reel, g representing the gravitational constant, SLThe effective working area of the lower part of the hydraulic cylinder or the air cylinder is represented;
s3: obtaining the pressure F of rolls of different diameters on a winding roller in a cord fabric winding devicet
According to the correction formula in the step S2, determining different hydraulic or pneumatic output data of the hydraulic cylinder or the lower part of the cylinder along with the change of the length and the quality of the fabric roll, improving the roll forming of the cord fabric and reducing the waste materials generated in the rolling process; pressure F of cloth roll to winding roller in normal direction of tangent point positiontThe relationship with the hydraulic pressure of the lower part of the hydraulic cylinder is as follows:
Fd＝md×g+mz×g+L×m0×g+PU×106×SU÷104-P×106×Sl÷104
Ft＝Fd÷2×cosθ
in the formula, FtShowing the pressure of the lap against the winding roller in the direction of the normal of the tangent point position, FdRepresenting the force of the cloth roll downwards in the vertical direction (i.e. representing the pressure against the two winding rollers in the vertical direction), mdDenotes the mass of the thimble, mzIndicating the mass of the reel, L the length of the cord fabric wound on the reel, m0Indicating cord unit wound on a reelMass of length, g denotes the constant of gravity, PUSet value, S, representing constant hydraulic or pneumatic pressure in the hydraulic or pneumatic cylinder or in the upper part of the cylinderURepresenting the effective working area of the upper part of the hydraulic cylinder or the air cylinder, P representing the output data of the hydraulic pressure or the air pressure of the lower part of the hydraulic cylinder or the air cylinder, SLRepresenting the effective working area of the lower part of the hydraulic cylinder or the air cylinder.
Further, the diameter D of the reelz≥0.25m。
Further, when the mass of the cord fabric roll wound on the winding device is more than 1700Kg (i.e. when n > 17), k isz,n＝kz,17。
A pressure correction method for winding gumming cord fabric by a double-roller friction type passive winding device comprises a bracket, a vertical driving mechanism fixed by the bracket, a winding shaft supported by a thimble and a thimble connected with the lower end of the vertical driving mechanism, and winding rollers arranged at the left lower part and the right lower part of the winding shaft, wherein the winding rollers are driving rollers and drive the winding shaft to rotate by friction; the lower end of the vertical driving mechanism drives the scroll to move up and down through the thimble; the driving mechanism comprises a hydraulic cylinder or an air cylinder;
the correction method is realized by correcting the hydraulic pressure or air pressure at the lower part of a hydraulic cylinder or an air cylinder, and comprises the following steps:
s1: obtaining correction coefficient of cloth roll quality in cord fabric winding device
kz＝kz,n-(kz,n-kz,n+1)×[mod(L×m0,100)/100](1)
In the formula, kzTaking different k for each 100Kg of cord fabric according to the amount of cord fabric wound on the winding shaft of the winding machinezValue (i.e. k per 100Kg of cord fabric woundzThe value changes once. ) N is 0,1,2,3,4 … … n, n +1, when the weight of the wound cord fabric roll is 0Kg, n is 0; when the mass of the wound cord fabric roll is 100Kg, n is 1; when the mass of the wound cord fabric roll is 200Kg, n is 2; when the mass of the wound cord fabric roll is 300Kg, n is 3; … …, respectively; l represents the length of the cord fabric wound on the reel, m0Indicating cord sheets wound on reelsQuality of the bit length; mod (Lxm)0100) represents the mass L x m of the wound cord fabric roll0The remainder of the division by 100;
s2: obtaining the diameter correction factor D of the wound cord fabric rollx；
Diameter correction coefficient D of cord fabric rollxCorrection coefficient k according to different reel diameters and different cord fabric roll masseszDetermining the value according to the package forming condition at the position of a cloth winding close to a shaft;
said DxThe value is more than or equal to 0.25;
s3: correction formula for obtaining hydraulic pressure or air pressure of hydraulic cylinder or lower part of air cylinder in cord fabric winding device
P＝if(Px≤Pn，Px，Pn) (3)
Wherein P represents output data of hydraulic pressure or air pressure of the lower part of the hydraulic cylinder or the air cylinder, and PxIndicating the use of the correction factor kzAnd DxCorrecting the output data of hydraulic or pneumatic pressure at the lower part of the cylinder or rear hydraulic cylinder, PnIndicating the use of the correction factor kzThe output data of the hydraulic pressure or the air pressure of the lower part of the hydraulic cylinder or the air cylinder is obtained after correction;
said PnComprises the following steps:
Pn＝P0+kz×L×m0×g÷(SL÷104)÷106(2)
wherein P represents output data of hydraulic pressure or air pressure of the lower part of the hydraulic cylinder or the air cylinder, and P0Set value, k, representing hydraulic or pneumatic pressure in the lower part of the initial cylinder or cylinderzA correction factor representing the quality of the fabric roll in the cord fabric winding device, L representing the length of the cord fabric wound on the reel, m0Representing the mass per unit length of cord fabric wound on a reel, g representing the gravitational constant, SLThe effective working area of the lower part of the hydraulic cylinder or the air cylinder is represented;
said PxComprises the following steps:
in the formula, PxIndicating the use of the correction factor kzAnd DxOutput data m of hydraulic or pneumatic pressure at the lower part of the cylinder or the hydraulic cylinder obtained after correctiondDenotes the mass of the thimble, mzRepresenting the mass of the reel, m0Representing the mass per unit length of cord fabric wound on a reel, L representing the length of cord fabric wound on a reel, g representing the gravitational constant, PUSet value, S, representing constant hydraulic or pneumatic pressure in the hydraulic or pneumatic cylinder or in the upper part of the cylinderURepresenting the effective working area, P, of the upper part of the cylinder or the fluid-filled cylinder0Set value, S, representing hydraulic or pneumatic pressure of the initial cylinder or lower part of the cylinderLIndicating the effective working area of the lower part of the cylinder or cylinder, LgDenotes the horizontal spacing between two winding rollers, DgDenotes the diameter of the winding roller, DxDenotes the diameter correction factor of the wound cord fabric roll, D denotes the diameter of the wound cord fabric roll, kzA correction coefficient representing the quality of the fabric in the cord fabric winding device;
s4: obtaining the pressure F of rolls of different diameters on a winding roller in a cord fabric winding devicet
According to the correction formula in the step S3, output data of hydraulic pressure or air pressure at the lower part of different hydraulic cylinders or air cylinders are determined along with the change of the length and the quality of the fabric roll, so that the package forming of the cord fabric is improved, and waste materials generated in the rolling process are reduced; pressure F of cloth roll to winding roller in normal direction of tangent point positiontThe relationship with the hydraulic pressure of the lower part of the hydraulic cylinder is as follows:
Fd＝md×g+mz×g+L×m0×g+PU×106×SU÷104-P×106×SL÷104
Ft＝Fd÷2×cosθ
in the formula, FtShowing the pressure of the lap against the winding roller in the direction of the normal of the tangent point position, FdRepresenting the force of the cloth roll downwards in the vertical direction (i.e. representing the pressure against the two winding rollers in the vertical direction), mdDenotes the mass of the thimble, mzIndicating reelL represents the length of the cord fabric wound on the reel, m0Representing the mass per unit length of cord fabric wound on a reel, g representing the gravitational constant, PUSet value, S, representing constant hydraulic or pneumatic pressure in the hydraulic or pneumatic cylinder or in the upper part of the cylinderURepresenting the effective working area of the upper part of the hydraulic cylinder or the air cylinder, P representing the output data of the hydraulic pressure or the air pressure of the lower part of the hydraulic cylinder or the air cylinder, SLRepresenting the effective working area of the lower part of the hydraulic cylinder or the air cylinder.
Further, when the mass of the cord fabric roll wound on the winding device is more than 1700Kg (i.e. when n > 17), k isz,n＝kz,17。
Further, the diameter correction coefficient D of the cord fabric rollxThe value is 0.25-0.60;
further, the diameter correction coefficient D of the cord fabric rollxThe value is 0.40-0.60.
Compared with the prior art, the invention has the following positive beneficial effects
In the invention, a correction coefficient k is set in the process of winding the dipped cord fabric by a double-roller friction type passive winding devicezPressure F in the direction of the normal to the tangent point of the cord fabric roll and the winding roller, at different valuestVarious relevant curves appear along with the change of the diameter of the cord fabric roll, so that the pressure of the fabric roll on the winding roller is reduced along with the increase of the diameter of the fabric roll, and particularly, the relationship that the pressure is firstly reduced rapidly and then reduced slowly is realized. The correction coefficient k can be properly adjusted according to the winding formation of the cord fabric rollzThe rolling forming method has the advantages of improving the rolling forming of the wound cord fabric, reducing the difference of the rolling density of the inner layer and the outer layer of the cord fabric and the width difference of the inner layer and the outer layer of the cord fabric, reducing the generation of radial stripes on the side surfaces of both ends of the cord fabric roll and reducing the waste materials generated in the rolling process.
In the process of winding the dipped cord fabric by the double-roller friction type passive winding device, the correction coefficient k is setzAnd DxThe pressure F of the cord fabric roll and the winding roller in the normal direction of the tangent point position can be set to be proper under the condition of different diameters of the cord fabric rolltSo that it will not be wound during the winding of the cord fabricThe density and width of the inner and outer fabric rolls are different, the generation of radial stripes on two side surfaces of the fabric roll is further reduced, the winding forming of the cord fabric is facilitated, the influence on the quality of the cord fabric in the winding process is reduced, and the later use of the cord fabric is facilitated.
Drawings
FIG. 1 is a schematic view of a prior art two-roll friction type passive winding device for dipped cord fabric;
FIG. 2 is a schematic view of the stress analysis of the cord fabric during the winding process of the dipped cord fabric winder;
FIG. 3 is a schematic view of a dipped cord fabric winding apparatus of the two-roll friction type passive winding apparatus described in example 1;
FIG. 4 shows the normal pressure F between the cord fabric roll and the winding roll at the tangent point position in example 2tThe change curve along with the diameter of the cord fabric roll;
FIG. 5 shows the normal pressure F between the cord fabric roll and the winding roll at the tangent point position in example 3tThe change curve along with the diameter of the cord fabric roll;
FIG. 6 is a pressure F in the normal direction of the tangent point position between the cord fabric roll and the winding roll in example 4tThe change curve along with the diameter of the cord fabric roll;
FIG. 7 is a pressure F in the normal direction of the tangent point position between the cord fabric roll and the winding roll in example 5tThe change curve along with the diameter of the cord fabric roll;
FIG. 8 is a pressure F in the normal direction of the tangent point position between the cord fabric roll and the winding roll in example 6tThe change curve along with the diameter of the cord fabric roll;
FIG. 9 is a pressure F in the normal direction of the tangent point position between the cord fabric roll and the winding roll in example 7tThe change curve of the diameter of the cord fabric roll.
Detailed Description
The present invention will be described in more detail with reference to the following embodiments, but the present invention is not limited to the embodiments.
Example 1
The invention provides a double-roller friction type passive winding device, which comprises a bracket, a vertical driving mechanism fixed by the bracket, a thimble connected with the lower end of the vertical driving mechanism, a reel supported by the thimble, and winding rollers arranged at the left lower part and the right lower part of the reel, wherein the thimble is arranged on the left lower part of the reel;
the lower end of the vertical driving mechanism drives the scroll to move up and down through the thimble;
the driving mechanism is a hydraulic cylinder or an air cylinder to provide a force for the cord fabric to be wound downwards (when the winding of the cord fabric is started and a very small amount of cord fabric is wound) or upwards (when a large amount of cord fabric is wound).
Further, the driving mechanism may also be a motor.
Examples 2 to 7
The following description will be made by taking a hydraulic cylinder as a driving mechanism of a cord fabric roll in a two-roll friction type passive winding device: but are not intended to limit the scope of the present invention.
The impregnated cord fabrics are wound and wound by using a hydraulic cylinder to provide supporting force, in examples 2 to 7, impregnated cord fabrics of different specifications are wound by different lengths, as shown in table 1, the hydraulic pressure of the lower part of the hydraulic cylinder at each stage in the winding process of each impregnated cord fabric is determined, and as shown in table 2 specifically:
TABLE 1 Specifications and roll lengths of the rolled-up cord fabrics of examples 2 to 7
| Algorithm | Specification of | Roll length (m) |
| Example 2 | 1260D/2/70EPD | 2300 |
| Example 3 | 840D/2/97EPD | 2700 |
| Example 4 | 1260D/2/110EPD | 3200 |
| Example 5 | 840D/2/68EPD | 2900 |
| Example 6 | 1260D/2/95EPD | 2600 |
| Example 7 | 840D/2/110EPD | 2500 |
Table 2 parameters of each stage in winding process of each dipped cord fabric in examples 2 to 7
In embodiments 2 to 7, in the process of winding different fabrics in each embodiment, the hydraulic pressure of the lower part of the hydraulic cylinder is continuously changed along with the change of the diameter of the fabric roll of the fabric, and the pressure of the fabric roll to the winding roller in the normal direction of the tangent point position is also continuously changed along with the change of the diameter of the fabric roll, wherein the pressure of the fabric roll to the winding roller in the normal direction of the tangent point position is changed along with the change of the diameter of the fabric roll, as shown in fig. 4 to 9. The width and the radial stripe depth of the cord fabric wound in examples 2 to 7 were counted as shown in table 3 below:
TABLE 3 width difference between inner and outer layers and radial stripe depth of the rolls of the wound cord fabrics of examples 2 to 7
From the winding results and the diagrams after winding of the dipped cord fabrics of examples 2 to 7, it can be seen that: after the correction method and the correction formula are used for correcting, the width difference between the outer layer and the inner layer of the cord fabric wound by the double-roller friction type passive winding device is greatly reduced, the depth of radial stripes is obviously reduced, and the problem that the cord fabric has more calendered rubber cord fabric waste materials due to poor package forming is solved, namely the generation of waste materials is reduced; the influence of the winding process on the dipped cord fabric is also obviously reduced, so that the influence on the use of the cord fabric in the later period is reduced, and the winding forming effect is good. Therefore, the correction method is accurate and reliable, and can effectively improve the phenomenon of poor winding forming of the cord fabric in the winding process of the cord fabric.
Claims (7)
1. A correction method for the pressure of a double-roller friction type passive winding device for winding impregnated cord fabric is characterized in that the impregnated cord fabric winding device comprises a bracket, a vertical driving mechanism fixed through the bracket, a thimble connected with the lower end of the vertical driving mechanism, a reel supported by the thimble, and winding rollers arranged at the left lower part and the right lower part of the reel, wherein the winding rollers are driving rollers and drive the reel to rotate through friction; the lower end of the vertical driving mechanism drives the scroll to move up and down through the thimble; the vertical driving mechanism is a hydraulic cylinder or an air cylinder;
the correction method comprises the following steps:
s1: obtaining correction coefficient of cord fabric roll quality in cord fabric winding device
kz＝kz,n-(kz,n-kz,n+1)×[mod(L×m0,100)/100](1)
In the formula, kzAccording to the quality value of the cord fabric wound on the reel of the winding machine, each 100Kg of cord fabric is wound with different kzThe value n is 0,1,2,3,4 … … n, n +1, when the weight of the wound cord fabric roll is 0Kg, n is 0; when the mass of the wound cord fabric roll is 100Kg, n is 1; when the mass of the wound cord fabric roll is 200Kg, n is 2; when the mass of the wound cord fabric roll is 300Kg, n is 3; … …, respectively; l represents the length of the cord fabric wound on the reel, m0Represents the mass per unit length of the cord fabric roll wound on the reel; mod (Lxm)0100) represents the mass L x m of the wound cord fabric roll0The remainder of the division by 100;
s2: correction formula for obtaining hydraulic pressure or air pressure of hydraulic cylinder or lower part of air cylinder in cord fabric winding device
P＝P0+kz×L×m0×g÷(SL÷104)÷106(2)
Wherein P represents output data of hydraulic pressure or air pressure of the lower part of the hydraulic cylinder or the air cylinder, and P0Set value, k, representing hydraulic or pneumatic pressure of the initial cylinder or lower part of the cylinderzA correction factor representing the quality of the roll, L representing the length of cord fabric wound on the reel, m0Representing the mass per unit length of cord fabric wound on a reel, g representing the gravitational constant, SLThe effective working area of the lower part of the hydraulic cylinder or the air cylinder is represented;
s3: obtaining the pressure F of rolls of different diameters on a winding roller in a cord fabric winding devicet
According to the correction formula in the step S2, determining different hydraulic or pneumatic output data of the hydraulic cylinder or the lower part of the cylinder along with the change of the length and the quality of the fabric roll, improving the roll forming of the cord fabric and reducing the waste materials generated in the rolling process; pressure F of cloth roll to winding roller in normal direction of tangent point positiontThe relationship with the hydraulic pressure of the lower part of the hydraulic cylinder is as follows:
Fd＝md×g+mz×g+L×m0×g+PU×106×SU÷104-P×l06×SL÷104
Ft＝Fd÷2×cosθ
in the formula, FtShowing the pressure of the lap against the winding roller in the direction of the normal of the tangent point position, FdRepresenting the downward force of the roll in the vertical direction, mdDenotes the mass of the thimble, mzIndicating the mass of the reel, L the length of the cord fabric wound on the reel, m0Representing the mass per unit length of cord fabric wound on a reel, g representing the gravitational constant, PUSet value, S, representing constant hydraulic or pneumatic pressure in the hydraulic or pneumatic cylinder or in the upper part of the cylinderURepresenting the effective working area of the upper part of the hydraulic cylinder or the air cylinder, P representing the output data of the hydraulic pressure or the air pressure of the lower part of the hydraulic cylinder or the air cylinder, SLThe effective working area of the lower part of the hydraulic cylinder or the air cylinder is represented;
wherein S isUTaking 100.48cm2、SLTake 51.24cm2、md1050Kg and m are takenzTaking 14Kg, the diameter D of a scrollzTake 0.17m, diameter D of winding rollergTake 0.300m, the gap L between two winding rollersgTaking 0.070m, PUTaking 0.55MPa and P0Taking 2.3MPa and m0K when 0.42Kg/m and 9.8N/Kg are taken as gz,0Is 1.600, kz,1Is 1.500, kz,2Is 1.450, kz,3Is 1.400, kz,4Is 1.360, kz,5Is 1.340, kz,6Is 1.330, kz,7Is 1.320;
wherein S isUTaking 100.48cm2、SLTake 51.24cm2、md1050Kg and m are takenzTaking 14Kg, the diameter D of a scrollzTake 0.17m, diameter D of winding rollergTake 0.300m, the gap L between two winding rollersgTaking 0.070m, PUTaking 0.60MPa and P0Taking 2.6MPa and m0K when 0.28Kg/m and 9.8N/Kg are taken as gz,0Is 1.700, kz,1Is 1.600, kz,2Is 1.550, kz,3Is 1.500, kz,4Is 1.420, kz,5Is 1.360, kz,6Is 1.310, kz,7Is 1.275, kz,8Is 1.245;
wherein S isUTaking 100.48cm2、SLTake 51.24cm2、md1050Kg and m are takenzTaking 14Kg, the diameter D of a scrollzTake 0.25m, diameter D of winding rollergTake 0.300m, the gap L between two winding rollersgTaking 0.070m, PUTaking 0.55MPa and P0Taking 2.5MPa and m0K when 0.31Kg/m and 9.8N/Kg are taken as gz,0Is 1.700, kz,1Is 1.600, kz,2Is 1.550, kz,3Is 1.500, kz,4Is 1.410, kz,5Is 1.345, kz,6Is 1.295, kz,7Is 1.260, kz,8Is 1.235, kz,9Is 1.210, kz,10Is 1.193.
2. The method for correcting the pressure of winding the dipped cord fabric by the two-roll friction type passive winding device according to claim 1, wherein the diameter D of the winding shaftz≥0.25m。
3. The method of claim 1, wherein k is the mass of the cord fabric roll wound on the winding device of 1700 Kg/Kgz,n＝kz,17。
4. A pressure correction method for winding gumming cord fabric by a double-roller friction type passive winding device is characterized in that the gumming cord fabric winding device comprises a bracket, a vertical driving mechanism fixed by the bracket, a thimble connected with the lower end of the vertical driving mechanism, a reel supported by the thimble, and winding rollers arranged at the left lower part and the right lower part of the reel, wherein the winding rollers are driving rollers and drive the reel to rotate by friction; the lower end of the vertical driving mechanism drives the scroll to move up and down through the thimble; the driving mechanism comprises a hydraulic cylinder or an air cylinder;
the correction method comprises the following steps:
s1: obtaining correction coefficient of cloth roll quality in cord fabric winding device
kz＝kz,n-(kz,n-kz,n+1)×[mod(L×m0,100)/100](1)
In the formula, kzTaking different k for each 100Kg of cord fabric according to the amount of cord fabric wound on the winding shaft of the winding machinezThe value n is 0,1,2,3,4 … … n, n +1, when the weight of the wound cord fabric roll is 0Kg, n is 0; when the mass of the wound cord fabric roll is 100Kg, n is 1; when the mass of the wound cord fabric roll is 200Kg, n is 2; when the mass of the wound cord fabric roll is 300Kg, n is 3; … …, respectively; l represents the length of the cord fabric wound on the reel, m0Mass representing unit length of the cord fabric wound on the reel; mod (Lxm)0100) represents the mass L x m of the wound cord fabric roll0The remainder of the division by 100;
s2: obtaining the diameter correction factor D of the wound cord fabric rollx；
Diameter correction coefficient D of cord fabric rollxCorrection coefficient k according to different reel diameters and different cord fabric roll masseszDetermining the value according to the package forming condition at the position of a cloth winding close to a shaft;
said DxThe value is more than or equal to 0.25;
s3: correction formula for obtaining hydraulic pressure or air pressure of hydraulic cylinder or lower part of air cylinder in cord fabric winding device
P＝if(Px≤Pn，Px，Pn) (3)
Wherein P represents output data of hydraulic pressure or air pressure of the lower part of the hydraulic cylinder or the air cylinder, and PxIndicating the use of the correction factor kzAnd DxCorrecting the output data of hydraulic or pneumatic pressure at the lower part of the cylinder or rear hydraulic cylinder, PnIndicating the use of the correction factor kzThe output data of the hydraulic pressure or the air pressure of the lower part of the hydraulic cylinder or the air cylinder is obtained after correction;
said PnComprises the following steps:
Pn＝P0+kz×L×m0×g÷(SL÷104)÷106(2)
wherein P represents output data of hydraulic pressure or air pressure of the lower part of the hydraulic cylinder or the air cylinder, and P0Set value, k, representing hydraulic or pneumatic pressure in the lower part of the initial cylinder or cylinderzIndicating cord fabric windingCorrection factor for the mass of the fabric roll in the device, L representing the length of cord fabric wound on the reel, m0Representing the mass per unit length of cord fabric wound on a reel, g representing the gravitational constant, SLThe effective working area of the lower part of the hydraulic cylinder or the air cylinder is represented;
said PxComprises the following steps:
in the formula, PxIndicating the use of the correction factor kzAnd DxOutput data m of hydraulic or pneumatic pressure at the lower part of the cylinder or the hydraulic cylinder obtained after correctiondDenotes the mass of the thimble, mzRepresenting the mass of the reel, m0Representing the mass per unit length of cord fabric wound on a reel, L representing the length of cord fabric wound on a reel, g representing the gravitational constant, PUSet value, S, representing constant hydraulic or pneumatic pressure in the hydraulic or pneumatic cylinder or in the upper part of the cylinderURepresenting the effective working area, P, of the upper part of the cylinder or the fluid-filled cylinder0Set value, S, representing hydraulic or pneumatic pressure of the initial cylinder or lower part of the cylinderLIndicating the effective working area of the lower part of the cylinder or cylinder, LgDenotes the horizontal spacing between two winding rollers, DgDenotes the diameter of the winding roller, DxDenotes the diameter correction factor of the wound cord fabric roll, D denotes the diameter of the wound cord fabric roll, kzA correction coefficient representing the quality of the fabric in the cord fabric winding device;
s4: obtaining the pressure F of rolls of different diameters on a winding roller in a cord fabric winding devicet
According to the correction formula in the step S3, output data of hydraulic pressure or air pressure at the lower part of different hydraulic cylinders or air cylinders are determined along with the change of the length and the quality of the fabric roll, so that the package forming of the cord fabric is improved, and waste materials generated in the rolling process are reduced; pressure F of cloth roll to winding roller in normal direction of tangent point positiontThe relationship with the hydraulic pressure of the lower part of the hydraulic cylinder is as follows:
Fd＝md×g+mz×g+L×m0×g+Pu×106×Su÷104-p×106×sL÷104
Ft＝Fd÷2×cosθ
in the formula, FtShowing the pressure of the lap against the winding roller in the direction of the normal of the tangent point position, FdRepresenting the downward force of the roll in the vertical direction, mdDenotes the mass of the thimble, mzIndicating the mass of the reel, L the length of the cord fabric wound on the reel, m0Representing the mass per unit length of cord fabric wound on a reel, g representing the gravitational constant, PUSet value, S, representing constant hydraulic or pneumatic pressure in the hydraulic or pneumatic cylinder or in the upper part of the cylinderURepresenting the effective working area of the upper part of the hydraulic cylinder or the air cylinder, P representing the output data of the hydraulic pressure or the air pressure of the lower part of the hydraulic cylinder or the air cylinder, SLThe effective working area of the lower part of the hydraulic cylinder or the air cylinder is represented;
wherein S isUTaking 100.48cm2、SLTake 51.24cm2、md1050Kg and m are takenzTaking 14Kg, the diameter D of a scrollzTake 0.17m, diameter D of winding rollergTake 0.300m, the gap L between two winding rollersgTaking 0.070m, PUTaking 0.55MPa and P0Taking 2.3MPa and m0Taking 0.42Kg/m, 9.8N/Kg and DxWhen 0.5m is taken, kz,0Is 1.600, kz,1Is 1.500, kz,2Is 1.450, kz,3Is 1.400, kz,4Is 1.350, kz,5Is 1.320, kz,6Is 1.300, kz,7Is 1.268, kz,8Is 1.244, kz,9Is 1.222, kz,10Is 1.205, kz,11Is 1.190, kz,12Is 1.180, kz,13Is 1.169, kz,14Is 1.161, kz,15Is 1.153, kz,16Is 1.150;
wherein S isUTaking 100.48cm2、SLTake 51.24cm2、md1050Kg and m are takenzTaking 14Kg, the diameter D of a scrollzTake 0.17m, diameter D of winding rollergTake 0.300m, the gap L between two winding rollersgTaking 0.070m, PUTaking 0.45MPa and P0Taking 2.4MPa and m0Taking 0.28Kg/m, 9.8N/Kg and DxWhen 0.4m is taken, kz,0Is 1.700, kz,1Is 1.600, kz,2Is 1.550, kz,3Is 1.500, kz,4Is 1.413, kz,5Is 1.345, kz,6Is 1.290;
wherein S isUTaking 100.48cm2、SLTake 51.24cm2、md1050Kg and m are takenzTaking 14Kg, the diameter D of a scrollzTake 0.17m, diameter D of winding rollergTake 0.300m, the gap L between two winding rollersgTaking 0.070m, PUTaking 0.65MPa and P0Taking 2.7MPa and m0Taking 0.40Kg/m, 9.8N/Kg and DxWhen 0.6m is taken, kz,0Is 1.800, kz,1Is 1.500, kz,2Is 1.410, kz,3Is 1.370, kz,4Is 1.310, kz,5Is 1.265, kz,6Is 1.230, kz,7Is 1.210, kz,8Is 1.190, kz,9Is 1.178, kz,10Is 1.165, kz,11Is 1.152.
5. The method of claim 4, wherein k is the mass of the cord fabric roll wound on the winding device of 1700 Kg/Kgz,n＝kz,17。
6. Method for correcting the pressure of winding the dipped cord fabric by a two-roll friction type passive winding device according to claim 4, characterized in that the diameter correction factor D of the cord fabric roll isxThe value is 0.25-0.60.
7. Method for correcting the pressure of winding the dipped cord fabric by a two-roll friction type passive winding device according to claim 6, characterized in that the diameter correction factor D of the cord fabric roll isxThe value is 0.40-0.60.
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