CA2548069A1 - Method and apparatus for transferring a tape by spooling - Google Patents
Method and apparatus for transferring a tape by spooling Download PDFInfo
- Publication number
- CA2548069A1 CA2548069A1 CA002548069A CA2548069A CA2548069A1 CA 2548069 A1 CA2548069 A1 CA 2548069A1 CA 002548069 A CA002548069 A CA 002548069A CA 2548069 A CA2548069 A CA 2548069A CA 2548069 A1 CA2548069 A1 CA 2548069A1
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- Prior art keywords
- tape
- spools
- winding
- spool
- setpoint
- Prior art date
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- Abandoned
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000004804 winding Methods 0.000 claims abstract description 53
- 238000012546 transfer Methods 0.000 claims abstract description 24
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 238000005259 measurement Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
- B65H23/182—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in unwinding mechanisms or in connection with unwinding operations
- B65H23/185—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in unwinding mechanisms or in connection with unwinding operations motor-controlled
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H16/00—Unwinding, paying-out webs
- B65H16/02—Supporting web roll
- B65H16/06—Supporting web roll both-ends type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H16/00—Unwinding, paying-out webs
- B65H16/10—Arrangements for effecting positive rotation of web roll
- B65H16/103—Arrangements for effecting positive rotation of web roll in which power is applied to web-roll spindle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/044—Sensing web tension
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
- B65H23/188—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web
- B65H23/192—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web motor-controlled
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
- B65H23/195—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in winding mechanisms or in connection with winding operations
- B65H23/198—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in winding mechanisms or in connection with winding operations motor-controlled (Controlling electrical drive motors therefor)
Landscapes
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
- Impression-Transfer Materials And Handling Thereof (AREA)
Abstract
A method and apparatus for transferring a tape by spooling is disclosed. A tape is transferred by spooling from a first, unwinding spool onto a second, winding spool, both spools being driven via a drive as a function of a predefined tape tension and/or a predefined tape setpoint speed at a setpoint rotational speed and/or with a setpoint torque. The respective setpoint rotational speed and/or the respective setpoint torque being determined as a function of a geometrical mean of the winding circumferences of the two spools. The geometrical mean of the winding circumferences of the two spools is determined continuously during transfer by spooling.
Description
METHOD AND APPARATUS FOR TRANSFERRING
A TAPE BY SPOOLING
BACKGROUND AND SUMMARY OF THE INVENTION
The invention relates to a method for transferring a tape by spooling.
Furthermore, the invention relates to an apparatus for transferring a tape by spooling.
During transfer of tapes by spooling, the object is often set of regulating or controlling the tape speed and the tape tension to a defined value. A setpoint rotational speed or a setpoint torque for the corresponding drives cannot be stipulated, however, as they change during the spooling process or transfer process of the tape on account of the changing diameters of the spools.
German Patent Document No. DE 44 27 780 C2 discloses a method for transferring a tape by spooling from a first, unwinding spool onto a second, winding spool, both spools being driven via in each case a drive as a function of a predefined tape tension and a predefined tape setpoint speed at a setpoint rotational speed and/or with a setpoint torque. According to DE 44 27 780 C2, the respective setpoint rotational speeds and the respective setpoint torques are determined as a function of a mathematical/geometrical mean of the winding circumferences of the two spools, it being presumed that the geometrical mean of the winding circumferences is constant. In order to determine the geometric mean of the winding circumferences, it is proposed according to DE 44, 27 780 C2 to measure the current radii of the two spools once and to calculate the geometrical mean of the winding circumferences therefrom. This has the disadvantage that the current radii of both spools have to be measured. As an alternative, DE 44 27 780 C2 proposes determining the geometrical mean of the winding circumferences before the start of the transfer by spooling using the known starting radius of a spool and the rotational-speed ratio of the spools which is measured during starting. Here, the measurement has to take place within a short time period, so that an inaccurate result can occur. Both variants have the disadvantage that a constant geometrical mean of the winding circumferences is presumed and therefore varying tape parameters in thickness and length which can occur during transfer by spooling or during a tape change cannot be allowed for.
Proceeding from this, the present invention is based on the problem of providing a novel method for transferring a tape by spooling and a corresponding apparatus.
This problem is solved by a method and apparatus for transferring a tape by spooling. According to the invention, the geometrical mean of the winding circumferences of the two spools is determined continuously during transfer by spooling.
BRIEF DESCRIPTION OF THE DRAWINGS
Preferred developments of the invention result from the following description. One exemplary embodiment of the invention is explained in greater detail using the drawing, without being restricted thereto. In the drawing:
Fig. 1 shows an apparatus for transferring a tape by spooling, in order to clarify the method according to the invention.
DETAILED DESCRIPTION OF THE DRAWINGS
In the following text, the present invention will be described in greater detail with reference to Fig. 1.
Fig. 1 shows an apparatus 10 for transferring a tape 12 which is wound on a first spool 11 by spooling onto a second spool 13. The first spool 11 is also called an unwinding spool and the second spool 13 is also called a winding spool. Both spools 11 and 13 are usually connected in each case via a shaft 14 and 15, respectively, to a motor 16 and 17, respectively, which drives the former. The rotational speeds of the motors 16 and 17 and therefore the rotational speeds of the spools 11 and 13 can be determined with the aid of sensors 18 and 19. The sensors 18, 19 can be configured as encoders. Instead of encoders, other sensors can also be used, for example tachometers, magnetic rotary encoders or else rotary encoders based on eddy current. According to Fig. 1, a rotational speed Nll of the first, unwinding spool 11 can be measured with the sensor 18 and a rotational speed Nls of the second, winding spool 13 can be measured with the sensor 19.
The first, unwinding spool 11 is characterized by a plurality of radii, namely by what is known as an empty radius rli, what is known as a starting radius rl, START and what is known as a current radius Rll. The second, winding spool 13 is likewise characterized by a plurality of radii, namely by what is known as an empty radius rls, a starting radius ris, sTaRT
and a current radius Ris. The starting radii rli, sTaR,T and ris, sTaR,T are the radii of the spools 11, 13 which are present at the start of the transfer by spooling. The current radii Rii and Ria are radii of the spools 11, 13 which change during transfer by spooling. When the entire tape length is wound onto one of the spools 11 or 13, the latter then assumes the radius rli, VOLL
or ris, voLL, respectively, whereas the respective other spool 13 or 11 then assumes the empty radius ri3 or rl, respectively.
It is to be noted here that, apart from the exemplary embodiment described, it goes without saying that contactless sensing of the rotational speeds of the spools can take place within the context of the invention. The correlation of the motors and coils then takes place via corresponding transmission ratios, and the rotational-speed sensors can then also be arranged, for example, on the coils.
A TAPE BY SPOOLING
BACKGROUND AND SUMMARY OF THE INVENTION
The invention relates to a method for transferring a tape by spooling.
Furthermore, the invention relates to an apparatus for transferring a tape by spooling.
During transfer of tapes by spooling, the object is often set of regulating or controlling the tape speed and the tape tension to a defined value. A setpoint rotational speed or a setpoint torque for the corresponding drives cannot be stipulated, however, as they change during the spooling process or transfer process of the tape on account of the changing diameters of the spools.
German Patent Document No. DE 44 27 780 C2 discloses a method for transferring a tape by spooling from a first, unwinding spool onto a second, winding spool, both spools being driven via in each case a drive as a function of a predefined tape tension and a predefined tape setpoint speed at a setpoint rotational speed and/or with a setpoint torque. According to DE 44 27 780 C2, the respective setpoint rotational speeds and the respective setpoint torques are determined as a function of a mathematical/geometrical mean of the winding circumferences of the two spools, it being presumed that the geometrical mean of the winding circumferences is constant. In order to determine the geometric mean of the winding circumferences, it is proposed according to DE 44, 27 780 C2 to measure the current radii of the two spools once and to calculate the geometrical mean of the winding circumferences therefrom. This has the disadvantage that the current radii of both spools have to be measured. As an alternative, DE 44 27 780 C2 proposes determining the geometrical mean of the winding circumferences before the start of the transfer by spooling using the known starting radius of a spool and the rotational-speed ratio of the spools which is measured during starting. Here, the measurement has to take place within a short time period, so that an inaccurate result can occur. Both variants have the disadvantage that a constant geometrical mean of the winding circumferences is presumed and therefore varying tape parameters in thickness and length which can occur during transfer by spooling or during a tape change cannot be allowed for.
Proceeding from this, the present invention is based on the problem of providing a novel method for transferring a tape by spooling and a corresponding apparatus.
This problem is solved by a method and apparatus for transferring a tape by spooling. According to the invention, the geometrical mean of the winding circumferences of the two spools is determined continuously during transfer by spooling.
BRIEF DESCRIPTION OF THE DRAWINGS
Preferred developments of the invention result from the following description. One exemplary embodiment of the invention is explained in greater detail using the drawing, without being restricted thereto. In the drawing:
Fig. 1 shows an apparatus for transferring a tape by spooling, in order to clarify the method according to the invention.
DETAILED DESCRIPTION OF THE DRAWINGS
In the following text, the present invention will be described in greater detail with reference to Fig. 1.
Fig. 1 shows an apparatus 10 for transferring a tape 12 which is wound on a first spool 11 by spooling onto a second spool 13. The first spool 11 is also called an unwinding spool and the second spool 13 is also called a winding spool. Both spools 11 and 13 are usually connected in each case via a shaft 14 and 15, respectively, to a motor 16 and 17, respectively, which drives the former. The rotational speeds of the motors 16 and 17 and therefore the rotational speeds of the spools 11 and 13 can be determined with the aid of sensors 18 and 19. The sensors 18, 19 can be configured as encoders. Instead of encoders, other sensors can also be used, for example tachometers, magnetic rotary encoders or else rotary encoders based on eddy current. According to Fig. 1, a rotational speed Nll of the first, unwinding spool 11 can be measured with the sensor 18 and a rotational speed Nls of the second, winding spool 13 can be measured with the sensor 19.
The first, unwinding spool 11 is characterized by a plurality of radii, namely by what is known as an empty radius rli, what is known as a starting radius rl, START and what is known as a current radius Rll. The second, winding spool 13 is likewise characterized by a plurality of radii, namely by what is known as an empty radius rls, a starting radius ris, sTaRT
and a current radius Ris. The starting radii rli, sTaR,T and ris, sTaR,T are the radii of the spools 11, 13 which are present at the start of the transfer by spooling. The current radii Rii and Ria are radii of the spools 11, 13 which change during transfer by spooling. When the entire tape length is wound onto one of the spools 11 or 13, the latter then assumes the radius rli, VOLL
or ris, voLL, respectively, whereas the respective other spool 13 or 11 then assumes the empty radius ri3 or rl, respectively.
It is to be noted here that, apart from the exemplary embodiment described, it goes without saying that contactless sensing of the rotational speeds of the spools can take place within the context of the invention. The correlation of the motors and coils then takes place via corresponding transmission ratios, and the rotational-speed sensors can then also be arranged, for example, on the coils.
If the tape 12 is transferred by spooling only in one direction, the motor 16 or 17 of the unwinding shaft 14 or 15, respectively, can also be used as a brake.
In the context of the present invention, with the aid of the apparatus 10 which is shown in Fig. 1, the tape 12 which is wound on the first, unwinding spool 11 is then to be transferred by spooling onto the second, winding spool 13, a control or regulating device 20 generating setpoint rotational speeds and/or setpoint torques as actuating variables 21, 22 for the drives 16, 17 of the spools 11, 13 as a function of the measured rotational speeds Nm and Nls of the spools 11 and 13 and as a function of a predefined tape setpoint speed VBArrD, soLL and/or a predefined tape tension FBArrn, soLL.
Here, in the context of the present invention, the setpoint rotational speeds and/or setpoint torques are generated as a function of a mathematical/geometrical mean UMG of the winding circumferences of the two spools 11 and 13, the geometrical mean UMG of the winding circumferences being determined or calculated continuously during the transfer by spooling, within the context of the present invention. The following is true for the mathematical/geometrical mean UMG of the winding circumferences:
UMG=2*~* R"+R,3 For the continuous determination of the geometrical mean UMG of the winding circumferences of the two spools 11, 13, the knowledge and/or measurement of the starting radius ris, sTaR.T of the winding spool 13 or the starting radius rm, sTAit.T of the unwinding spool 11 is required in addition to the measurement of the rotational speeds Nll, Nis of the spools 11, 13.
Using the following equations, the geometrical mean UMG of the winding circumferences of the two spools 11, 13 can be calculated from these variables, Ull and Uls being calculated revolutions of the drives 16, 17 since the start or beginning of the transfer by spooling at the instant to, and xwa representing the current rotational-speed ratio of the winding spool 13 with respect to the unwinding spool 11.
r Ul1 = jNl1 (t)dt fo f U13 = f N13 (t)dt fo N13 (t) xwa =
Nl l (t) UMG=2*~*r .*(UZ+UZ)* ~'a2+1 l3,STAR7 13 11 U i - U 3 + 2 * ~YV a * UI 1 * U13 ) 2 UMG=2*~*r *(UZ +UZ)* ~'a2+1 11,START 13 11 Uj -~3+2*.xWa*Ull*U13)z The starting radii rla,, START and ra,s, START can be converted into one another as follows (the calculation of the current radii can be represented in each case by corresponding transformation):
_ 2*Ull*U13+xwa*(U; -U;) rlI,START - rl3,START * * * 2 2 2 xYVa UI 1 U13 + Ui l - U13 As has already been mentioned, the starting radius ris, START of the winding spool 13 or the starting radius r>,>, START Of the unwinding spool 11 is required in order to calculate the geometrical mean UMG of the winding circumferences of the two spools 11, 13. This starting radius ris, START of the winding spool 13 or the starting radius rl>, sTAFtT of the unwinding spool 11 can either be predefined or determined by measurement during the transfer by spooling.
During the determination or calculation of the starting radius rls, START Of the winding spool 13, a measured tape speed Vs~rrD is used which is measured in the exemplary embodiment on a tape-guiding roller 23 with the aid of a sensor 24. It goes without saying that other measuring methods of the tape speed are conceivable which are carried out, for example, in a contactless or optical manner. The sensor 24 supplies the control or regulating device 20 with a rotational speed N23 of the tape-s guiding roller 23, from which the tape speed VB~rD of the tape 12 which is to be transferred by spooling and therefore the starting radius rls, START Of the winding spool 13 can be calculated, with specification of a radius rzs of the tape-guiding roller 23, using the two following equations:
_ ~Na *\UI -U3)+2*U11 *U13 *N13) rl3,START - vBAND * 2 2 2*~*N11*N13* U11+U13 vBAND =2*~*N23 *r23 As an alternative, the measurement of the starting radius ris, START Of the winding spool can be determined on the basis of a tape length LsArtD
which has been transferred by spooling since the start of the transfer by spooling at the instant to, it being possible for the tape length LBArtn which has been transferred by spooling since the start of the transfer by spooling to be calculated from the integral of the tape running speed VB~D.
According to this alternative, the starting radius ris, START Of the winding spool 13 is then calculated using the two following equations:
U1 ~ - U 3 + 2 * xwa * U11 * U13 rl3,sTARr = LBAND * 2 * ~ * U,1 * U13 * ~U 11 + U13 * xwa~
r r LBAND - JvBAND ~t)dt = 2 * ~ * r23 * f Nz3 (t)dt to to With the aid of the geometric mean UMG of the winding circumferences of the spools 11, 13 which is determined continuously in the abovementioned manner, the setpoint rotational speeds NsoLL and/or setpoint torques MsoLL for the drives 16, 17 can then be determined using the two following equations, the setpoint rotational speeds and setpoint torques which are determined by the control or regulating device 20 being supplied to the drives 16, 17 as actuating variables 21 and 22, respectively:
yBAND,SOLL * 1 + xwa z soLL = UMG
_ FBAND,SOLL * UMG
MSOLL -1 z 2*~c* 1+~
xwa In the context of the present invention, further variables can be calculated; for example, the radius rll, voLL of the unwinding spool 11 using the following equation, the spool 11 assuming the radius rll, voLL when the entire tape 12 is wound completely onto the spool 11:
UMG z z r»,voLL = 4*~2 -ris y, r~3,sraRr *~U i +U~s~ *~xwaz +1)-rz a,voLL = ~Ul - U 3 + 2 * xwa * Ul ~ * U13 )z Furthermore, an overall winding cross-sectional area can be calculated from the two winding cross-sectional areas All, Als of the spools 11, 13 with the following equation:
UMGz A" +A,3 = 4*~c Moreover, in the context of the present invention, a tape thickness D
of the tape 12 which is to be transferred by spooling can be determined with the following equation:
U13 -xWCI*U~1 D=2*rl3,START* U~ -U3+2*xwa*U"*U,3 Depending on the tape width, it is to be taken into consideration here that the thickness D which is calculated with the aid of the above equation can include any air inclusions between the individual winding layers. If the real nominal tape thickness is known or can be measured, the thickness of the air inclusions or their change in thickness can be determined with the method according to the invention as a consequence of the spooling transfer process.
The overall tape length LBArrn, cESAMT can likewise be calculated with the method according to the invention, to be precise on the basis of the following equation:
r 2 _ 2 _ * ~rII,~OLL rll 1'BAND,GESAMT - ~
Here, the free travel length of the tape 12 between the two spools 11 and 13 is to be added to the value which is determined with the aid of the above equation.
Furthermore, a changing speed of the rotational-speed ratios of the two spools 11 and 13 can be determined as follows:
dxwa -2* Nli +N3~*~Un *N13 -U13 *Nll~
2 * 2 2 dt NI1 U11 + U13 With the aid of the method according to the invention for transferring a tape by spooling between two spools, it is proposed for the first time to determine the mathematical/geometrical mean UMG continuously which is required to determine the setpoint rotational speeds and setpoint torques for the drives of the two spools. As a result, varying tape parameters in thickness and length which can occur during transfer by winding or during a tape change can be allowed for.
In the context of the present invention, with the aid of the apparatus 10 which is shown in Fig. 1, the tape 12 which is wound on the first, unwinding spool 11 is then to be transferred by spooling onto the second, winding spool 13, a control or regulating device 20 generating setpoint rotational speeds and/or setpoint torques as actuating variables 21, 22 for the drives 16, 17 of the spools 11, 13 as a function of the measured rotational speeds Nm and Nls of the spools 11 and 13 and as a function of a predefined tape setpoint speed VBArrD, soLL and/or a predefined tape tension FBArrn, soLL.
Here, in the context of the present invention, the setpoint rotational speeds and/or setpoint torques are generated as a function of a mathematical/geometrical mean UMG of the winding circumferences of the two spools 11 and 13, the geometrical mean UMG of the winding circumferences being determined or calculated continuously during the transfer by spooling, within the context of the present invention. The following is true for the mathematical/geometrical mean UMG of the winding circumferences:
UMG=2*~* R"+R,3 For the continuous determination of the geometrical mean UMG of the winding circumferences of the two spools 11, 13, the knowledge and/or measurement of the starting radius ris, sTaR.T of the winding spool 13 or the starting radius rm, sTAit.T of the unwinding spool 11 is required in addition to the measurement of the rotational speeds Nll, Nis of the spools 11, 13.
Using the following equations, the geometrical mean UMG of the winding circumferences of the two spools 11, 13 can be calculated from these variables, Ull and Uls being calculated revolutions of the drives 16, 17 since the start or beginning of the transfer by spooling at the instant to, and xwa representing the current rotational-speed ratio of the winding spool 13 with respect to the unwinding spool 11.
r Ul1 = jNl1 (t)dt fo f U13 = f N13 (t)dt fo N13 (t) xwa =
Nl l (t) UMG=2*~*r .*(UZ+UZ)* ~'a2+1 l3,STAR7 13 11 U i - U 3 + 2 * ~YV a * UI 1 * U13 ) 2 UMG=2*~*r *(UZ +UZ)* ~'a2+1 11,START 13 11 Uj -~3+2*.xWa*Ull*U13)z The starting radii rla,, START and ra,s, START can be converted into one another as follows (the calculation of the current radii can be represented in each case by corresponding transformation):
_ 2*Ull*U13+xwa*(U; -U;) rlI,START - rl3,START * * * 2 2 2 xYVa UI 1 U13 + Ui l - U13 As has already been mentioned, the starting radius ris, START of the winding spool 13 or the starting radius r>,>, START Of the unwinding spool 11 is required in order to calculate the geometrical mean UMG of the winding circumferences of the two spools 11, 13. This starting radius ris, START of the winding spool 13 or the starting radius rl>, sTAFtT of the unwinding spool 11 can either be predefined or determined by measurement during the transfer by spooling.
During the determination or calculation of the starting radius rls, START Of the winding spool 13, a measured tape speed Vs~rrD is used which is measured in the exemplary embodiment on a tape-guiding roller 23 with the aid of a sensor 24. It goes without saying that other measuring methods of the tape speed are conceivable which are carried out, for example, in a contactless or optical manner. The sensor 24 supplies the control or regulating device 20 with a rotational speed N23 of the tape-s guiding roller 23, from which the tape speed VB~rD of the tape 12 which is to be transferred by spooling and therefore the starting radius rls, START Of the winding spool 13 can be calculated, with specification of a radius rzs of the tape-guiding roller 23, using the two following equations:
_ ~Na *\UI -U3)+2*U11 *U13 *N13) rl3,START - vBAND * 2 2 2*~*N11*N13* U11+U13 vBAND =2*~*N23 *r23 As an alternative, the measurement of the starting radius ris, START Of the winding spool can be determined on the basis of a tape length LsArtD
which has been transferred by spooling since the start of the transfer by spooling at the instant to, it being possible for the tape length LBArtn which has been transferred by spooling since the start of the transfer by spooling to be calculated from the integral of the tape running speed VB~D.
According to this alternative, the starting radius ris, START Of the winding spool 13 is then calculated using the two following equations:
U1 ~ - U 3 + 2 * xwa * U11 * U13 rl3,sTARr = LBAND * 2 * ~ * U,1 * U13 * ~U 11 + U13 * xwa~
r r LBAND - JvBAND ~t)dt = 2 * ~ * r23 * f Nz3 (t)dt to to With the aid of the geometric mean UMG of the winding circumferences of the spools 11, 13 which is determined continuously in the abovementioned manner, the setpoint rotational speeds NsoLL and/or setpoint torques MsoLL for the drives 16, 17 can then be determined using the two following equations, the setpoint rotational speeds and setpoint torques which are determined by the control or regulating device 20 being supplied to the drives 16, 17 as actuating variables 21 and 22, respectively:
yBAND,SOLL * 1 + xwa z soLL = UMG
_ FBAND,SOLL * UMG
MSOLL -1 z 2*~c* 1+~
xwa In the context of the present invention, further variables can be calculated; for example, the radius rll, voLL of the unwinding spool 11 using the following equation, the spool 11 assuming the radius rll, voLL when the entire tape 12 is wound completely onto the spool 11:
UMG z z r»,voLL = 4*~2 -ris y, r~3,sraRr *~U i +U~s~ *~xwaz +1)-rz a,voLL = ~Ul - U 3 + 2 * xwa * Ul ~ * U13 )z Furthermore, an overall winding cross-sectional area can be calculated from the two winding cross-sectional areas All, Als of the spools 11, 13 with the following equation:
UMGz A" +A,3 = 4*~c Moreover, in the context of the present invention, a tape thickness D
of the tape 12 which is to be transferred by spooling can be determined with the following equation:
U13 -xWCI*U~1 D=2*rl3,START* U~ -U3+2*xwa*U"*U,3 Depending on the tape width, it is to be taken into consideration here that the thickness D which is calculated with the aid of the above equation can include any air inclusions between the individual winding layers. If the real nominal tape thickness is known or can be measured, the thickness of the air inclusions or their change in thickness can be determined with the method according to the invention as a consequence of the spooling transfer process.
The overall tape length LBArrn, cESAMT can likewise be calculated with the method according to the invention, to be precise on the basis of the following equation:
r 2 _ 2 _ * ~rII,~OLL rll 1'BAND,GESAMT - ~
Here, the free travel length of the tape 12 between the two spools 11 and 13 is to be added to the value which is determined with the aid of the above equation.
Furthermore, a changing speed of the rotational-speed ratios of the two spools 11 and 13 can be determined as follows:
dxwa -2* Nli +N3~*~Un *N13 -U13 *Nll~
2 * 2 2 dt NI1 U11 + U13 With the aid of the method according to the invention for transferring a tape by spooling between two spools, it is proposed for the first time to determine the mathematical/geometrical mean UMG continuously which is required to determine the setpoint rotational speeds and setpoint torques for the drives of the two spools. As a result, varying tape parameters in thickness and length which can occur during transfer by winding or during a tape change can be allowed for.
List of Designations:
Apparatus 11 Spool 12 Tape 5 13 Spool 14 Shaft Shaft 16 Drive 17 Drive 10 18 Sensor 19 Sensor Control and regulating device 21 Actuating signal 22 Actuating signal 15 23 Tape-guiding roller 24 Sensor The foregoing disclosure has been set forth merely to illustrate the invention and is not intended to be limiting. Since modifications of the disclosed embodiments incorporating the spirit and substance of the 20 invention may occur to persons skilled in the art, the invention should be construed to include everything within the scope of the appended claims and equivalents thereof.
Apparatus 11 Spool 12 Tape 5 13 Spool 14 Shaft Shaft 16 Drive 17 Drive 10 18 Sensor 19 Sensor Control and regulating device 21 Actuating signal 22 Actuating signal 15 23 Tape-guiding roller 24 Sensor The foregoing disclosure has been set forth merely to illustrate the invention and is not intended to be limiting. Since modifications of the disclosed embodiments incorporating the spirit and substance of the 20 invention may occur to persons skilled in the art, the invention should be construed to include everything within the scope of the appended claims and equivalents thereof.
Claims (20)
1. A method for transferring a tape by spooling from a first, unwinding spool (11) onto a second, winding spool (13), wherein both spools are driven via a respective drive as a function of a predefined tape tension and/or a predefined tape setpoint speed at a setpoint rotational speed and/or with a setpoint torque, and the respective setpoint rotational speed and/or the respective setpoint torque being determined as a function of a geometrical mean (UMG) of a winding circumference of each of the two spools, wherein the geometrical mean (UMG) of the winding circumferences of the two spools is determined continuously during transfer by spooling.
2. The method according to Claim 1, wherein, in order to determine the geometrical mean (UMG) of the winding circumferences of the two spools, a starting radius (r13, START) of the winding spool is predefined and/or measured, and wherein actual rotational speeds (N11, N13) of the two spools (11, 13) are measured, and wherein the geometrical mean (UMG) of the winding circumferences of the two spools (11, 13) is calculated using the following equations:
3. The method according to Claim 1, wherein, in order to determine the geometrical mean (UMG) of the winding circumferences of the two spools (11, 13), a starting radius (r11, START) of the unwinding spool (11) is predefined and/or measured, and wherein actual rotational speeds (N11, N13) of the two spools (11, 13) are measured, and wherein the geometrical mean (UMG) of the winding circumferences of the two spools (11, 13) is calculated using the following equations:
4. The method according to Claim 2, wherein the starting radius (r13, START) of the winding spool (13) is predefined.
5. The method according to Claim 3, wherein the starting radius (r11, START) of the unwinding spool (11) is predefined.
6. The method according to Claim 2, wherein a tape speed (V BAND) is measured in order to measure the starting radius (r13, START) of the winding spool (13), and wherein the starting radius (r13, START) is calculated using the following equation:
7. The method according to Claim 5, wherein a rotational speed (N23) of a tape-guiding roller (23) is measured in order to measure a tape speed (V BAND), and wherein the tape speed (V BAND) is calculated, with specification of a radius (r23) of the tape-guiding roller (23), using the following equation:
v BAND = 2*.pi.*N23 *r23.
v BAND = 2*.pi.*N23 *r23.
8. The method according to Claim 2, wherein a tape length (L BAND) which has been transferred by spooling since a start of a transfer is measured in order to measure the starting radius (r13, START) of the winding spool (13), and wherein the starting radius (r13, START) is calculated using the following equation:
9. The method according to Claim 7, wherein the rotational speed (N23) of the tape-guiding roller (23) is measured in order to measure a tape length (L BAND) which has been transferred by spooling since a start of a transfer, and wherein the tape length (L BAND) which has been transferred by spooling is calculated, with specification of the radius (r23) of the tape-guiding roller (23), using the following equation:
.
.
10. The method according to any one of Claims 1 to 8, wherein the setpoint rotational speeds (N SOLL) of the spools (11, 13) are calculated from the predefined tape setpoint speed (V BAND, SOLL) using the following equation:
11. The method according to any one of Claims 1 to 9, wherein the setpoint torques (M SOLL) of the spools (11, 13) are calculated from the predefined tape tension (F BAND, SOLL) using the following equation:
.
.
12. The method according to any one of Claims 1 to 10, wherein a changing speed of rotational-speed ratios of the two spools (11, 13) is determined as follows:
13. An apparatus for transferring a tape by spooling from a first, unwinding spool (11) onto a second, winding spool (13), comprising a control or regulating device for carrying out the method according to any one of Claims 1 to 11.
14. A method for transferring a tape by spooling from a first, unwinding spool onto a second, winding spool, comprising the steps of:
driving the first and second spools by first and second drives, respectively, at a respective setpoint value, wherein the first and second spools have a respective winding circumference during a transfer process;
wherein the respective setpoint value for each spool is determined as a function of a geometrical mean of the winding circumferences and wherein the geometrical mean is determined continuously during the transfer process.
driving the first and second spools by first and second drives, respectively, at a respective setpoint value, wherein the first and second spools have a respective winding circumference during a transfer process;
wherein the respective setpoint value for each spool is determined as a function of a geometrical mean of the winding circumferences and wherein the geometrical mean is determined continuously during the transfer process.
15. The method according to Claim 14, wherein the setpoint value is a rotational speed.
16. The method according to Claim 14, wherein the setpoint value is a torque.
17. An apparatus for transferring a tape, comprising:
a first unwinding spool having a continuously changing tape winding circumference during a tape transfer process;
a second winding spool having a continuously changing tape winding circumference during the tape transfer process; and a control device coupled to the first and second spools;
wherein the control device provides a respective setpoint value to the first and second spools for driving the first and second spools during the tape transfer process and wherein the respective setpoint value for each spool is determined by the control device as a function of a geometrical mean of the tape winding circumferences of the first and second spools, and further wherein the geometrical mean is determined continuously during the transfer process.
a first unwinding spool having a continuously changing tape winding circumference during a tape transfer process;
a second winding spool having a continuously changing tape winding circumference during the tape transfer process; and a control device coupled to the first and second spools;
wherein the control device provides a respective setpoint value to the first and second spools for driving the first and second spools during the tape transfer process and wherein the respective setpoint value for each spool is determined by the control device as a function of a geometrical mean of the tape winding circumferences of the first and second spools, and further wherein the geometrical mean is determined continuously during the transfer process.
18. The apparatus according to Claim 17, wherein the setpoint value is a rotational speed.
19. The apparatus according to Claim 17, wherein the setpoint value is a torque.
20. The apparatus according to Claim 17, wherein the respective setpoint values are a function of a predefined tape setpoint value.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005024091A DE102005024091A1 (en) | 2005-05-25 | 2005-05-25 | Method and device for rewinding a tape |
| DE102005024091.7 | 2005-05-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2548069A1 true CA2548069A1 (en) | 2006-11-25 |
Family
ID=37387643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002548069A Abandoned CA2548069A1 (en) | 2005-05-25 | 2006-05-25 | Method and apparatus for transferring a tape by spooling |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20060266869A1 (en) |
| JP (1) | JP2006327199A (en) |
| CA (1) | CA2548069A1 (en) |
| DE (1) | DE102005024091A1 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2482167B (en) * | 2010-07-22 | 2016-06-08 | Markem-Imaje Ind Ltd | Tape drive and method of operation of a tape drive |
| CN102020031B (en) * | 2010-12-29 | 2012-05-23 | 成都三可实业有限公司 | Unwinding device of packaging machinery |
| JP6457300B2 (en) * | 2014-07-29 | 2019-01-23 | 武藤工業株式会社 | Media transport mechanism |
| AU2015330856B2 (en) * | 2014-10-10 | 2018-08-16 | Becton, Dickinson And Company | Substrate tensioning control device |
| CN108423222B (en) * | 2017-02-15 | 2023-11-17 | 深圳市远东皓星科技有限公司 | Winding machine |
| DE102017108495A1 (en) * | 2017-04-21 | 2018-10-25 | Windmöller & Hölscher Kg | Monitoring procedure for monitoring an unwinding process, unwinding device and unwinding system |
| US10780489B2 (en) | 2018-02-21 | 2020-09-22 | Newfrey Llc | Tool-free opening tape feed receiver for a self-piercing rivet machine |
| US10758966B2 (en) | 2018-02-21 | 2020-09-01 | Newfrey Llc | Processor-controlled tape feed apparatus and method for a self-piercing rivet machine |
| US10456826B2 (en) | 2018-02-21 | 2019-10-29 | Newfrey Llc | Tape feed apparatus and method for a self-piercing rivet machine |
| CN108396854B (en) * | 2018-05-28 | 2023-09-12 | 北京城市排水集团有限责任公司 | Winding-type large-pipe-diameter plugging device free of well descending and application method thereof |
| US11851298B2 (en) * | 2021-05-28 | 2023-12-26 | Renova S.R.L. | Machine for producing cardboard |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5752301B2 (en) * | 1974-06-01 | 1982-11-06 | ||
| US4977466A (en) * | 1988-07-04 | 1990-12-11 | Fuji Photo Film Co., Ltd. | Magnetic tape wind-up control method, and tape wind-up apparatus |
| DE4113746C1 (en) * | 1991-04-26 | 1992-04-09 | Reifenhaeuser Gmbh & Co Maschinenfabrik, 5210 Troisdorf, De | Operating installation for winding extruded material - using winding station with electric motor controlled by signal determined by material flow rate |
| US5275351A (en) * | 1992-04-30 | 1994-01-04 | Industrial Technology Research Institute | Constant tape speed controller |
| US5402353A (en) * | 1993-05-28 | 1995-03-28 | Htrc Automation Inc. | Method and apparatus for producing a primary roll of material |
| DE4427780C2 (en) * | 1994-08-05 | 1996-12-12 | Roland Man Druckmasch | Method and device for rewinding a tape |
-
2005
- 2005-05-25 DE DE102005024091A patent/DE102005024091A1/en not_active Withdrawn
-
2006
- 2006-05-23 JP JP2006143297A patent/JP2006327199A/en active Pending
- 2006-05-24 US US11/440,334 patent/US20060266869A1/en not_active Abandoned
- 2006-05-25 CA CA002548069A patent/CA2548069A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| JP2006327199A (en) | 2006-12-07 |
| DE102005024091A1 (en) | 2006-11-30 |
| US20060266869A1 (en) | 2006-11-30 |
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| FZDE | Discontinued |