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
  • B65H16/10—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
  • B65H18/00—Winding webs
  • B65H18/08—Web-winding mechanisms
  • B65H18/10—Mechanisms 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
  • B65H19/00—Changing the web roll
  • B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
  • B65H19/12—Lifting, transporting, or inserting the web roll; Removing empty core
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H19/00—Changing the web roll
  • B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
  • B65H19/12—Lifting, transporting, or inserting the web roll; Removing empty core
  • B65H19/126—Lifting, transporting, or inserting the web roll; Removing empty core with both-ends supporting arrangements
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H19/00—Changing the web roll
  • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
  • B65H19/2207—Changing the web roll in winding mechanisms or in connection with winding operations the web roll being driven by a winding mechanism of the centre or core drive 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
  • B65H23/00—Registering, tensioning, smoothing or guiding webs
  • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
  • B65H23/06—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle
  • B65H23/066—Electrical brake devices therefor
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2301/00—Handling processes for sheets or webs
  • B65H2301/40—Type of handling process
  • B65H2301/41—Winding, unwinding
  • B65H2301/413—Supporting web roll
  • B65H2301/4134—Both ends type arrangement
  • B65H2301/41346—Both ends type arrangement separate elements engaging each end of the roll (e.g. chuck)
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2301/00—Handling processes for sheets or webs
  • B65H2301/40—Type of handling process
  • B65H2301/41—Winding, unwinding
  • B65H2301/417—Handling or changing web rolls
  • B65H2301/418—Changing web roll
  • B65H2301/4185—Core or mandrel discharge or removal, also organisation of core removal
  • B65H2301/41852—Core or mandrel discharge or removal, also organisation of core removal by extracting mandrel from wound roll, e.g. in coreless applications
  • B65H2301/418523—Core or mandrel discharge or removal, also organisation of core removal by extracting mandrel from wound roll, e.g. in coreless applications by movement of the wound web roll
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2301/00—Handling processes for sheets or webs
  • B65H2301/40—Type of handling process
  • B65H2301/41—Winding, unwinding
  • B65H2301/417—Handling or changing web rolls
  • B65H2301/418—Changing web roll
  • B65H2301/4185—Core or mandrel discharge or removal, also organisation of core removal
  • B65H2301/41856—Core or mandrel discharge or removal, also organisation of core removal by stripping core from mandrel or chuck, e.g. by spring mechanism
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2301/00—Handling processes for sheets or webs
  • B65H2301/40—Type of handling process
  • B65H2301/41—Winding, unwinding
  • B65H2301/417—Handling or changing web rolls
  • B65H2301/4187—Relative movement of core or web roll in respect of mandrel
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2403/00—Power transmission; Driving means
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2403/00—Power transmission; Driving means
  • B65H2403/70—Clutches; Couplings
  • B65H2403/72—Clutches, brakes, e.g. one-way clutch +F204
  • B65H2403/725—Brakes
  • B65H2403/7255—Disc brakes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2403/00—Power transmission; Driving means
  • B65H2403/90—Machine drive
  • B65H2403/94—Other features of machine drive
  • B65H2403/943—Electronic shaft arrangement
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2408/00—Specific machines
  • B65H2408/20—Specific machines for handling web(s)
  • B65H2408/24—Specific machines for handling web(s) unwinding machines
  • B65H2408/241—Turret
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2408/00—Specific machines
  • B65H2408/20—Specific machines for handling web(s)
  • B65H2408/24—Specific machines for handling web(s) unwinding machines
  • B65H2408/241—Turret
  • B65H2408/2415—Turret specified by number of arms
  • B65H2408/24153—Turret specified by number of arms with two arms

Definitions

• the invention relates to drives of a reel changer according to the preamble of claim 1, 6 or 62.
• a roll changer for a printing press is known from EP 1 155 987 A2.
• Three-phase asynchronous motors, general three-phase or AC motors, universal motors or DC motors are provided for driving the supply rolls in this roll changer.
• the supply rolls can only be driven on one side of the supply roll, whereas the supply roll on the opposite side is mounted without a drive in a rotary bearing.
• Post-published EP 1 460 010 A2 describes a machine with an electric motor, which is preferably designed as a synchronous motor and is used to directly drive a winding core of a winding roll.
• DE 1 599 036 describes a winding device with a segment compound expansion head known.
• the segments are arranged in a ring around a rotatable mandrel provided with cam surfaces and can be moved radially towards or away from the mandrel axis when axially adjusted relative to the mandrel.
• the segments are held in their spread position by a spring acting axially in one direction. They can be released from the spreading position by a piston which is pressurized with pressure medium and which acts against the force of the spring in the opposite direction.
• EP 0 981 443 B1 discloses a hollow shaft motor of a rotating cylinder or a roller in a rotary printing press.
• EP 1 155 987 A2 relates to a drive for a roll changer with at least one motor as the center drive of a paper roll.
• the torque or the driving force of the motor is transferred to the core of a paper roll via clamping pins.
• WO 02/24564 A1 describes an adjusting element for a mandrel in a reel changer.
• a sleeve can be fixed on the mandrel.
• the toggle lever on the provided clamping jaws is pressed outwards by means of a compression spring.
• An actuating element can be axially adjusted by a fluid-driven piston to actuate the clamping jaws in a hollow shaft, so that the clamping jaws are pressed outwards and fix the sleeve.
• An ejector device is arranged on the mandrel for stripping off a used sleeve. The ejector device is axially displaceably mounted on the hollow shaft and rotates together with the hollow shaft about a central axis in a housing.
• the invention has for its object to provide drives for a reel changer of a printing press.
• One advantage of the drive according to the invention is in particular that a field-weakenable synchronous motor is provided as the electric motor.
• Such synchronous motors have an extremely wide range of performance and can be manufactured inexpensively. Because of their motor characteristics, they are particularly well suited for driving reelstands on a printing press.
• drive cones are normally provided, which engage in a torque-transmitting manner on the inside of the sleeve of the supply roll. These cones are driven by the drive shaft of the electric motor provided for the drive.
• the drive shaft of the synchronous motor itself can be brought into engagement with the supply roll, in particular on the sleeve of the supply roll, in a torque-transmitting manner.
• the drive cone is arranged directly, in particular rigidly, on the rotor of the synchronous motor.
• the driver elements on the drive shaft which are provided for torque transmission, should preferably be rigidly connected, in particular in one piece, to the drive shaft. In this way, the otherwise necessary and extremely complex adjustment mechanisms for adjusting the Save driver elements.
• An advantage of the reel changer which is only driven on one side by means of an electric motor, lies in particular in the fact that the non-driven rotary bearing can also absorb axial forces along the central axis of the supply reel, in particular during the waxing-up process. As a result, it is possible in particular to dimension the axial bearing correspondingly weaker on the side of the electric motor.
• the receptacles for storing the supply roll should preferably be constructed identically on both sides of the supply roll in order to be able to save costs by using corresponding identical parts. Both receptacles should be rotatably supported, only one receptacle being driven by the synchronous motor.
• a free start of the supply roll can be rewound onto the supply roll with the aid of the synchronous motor.
• a fixing device can be adjusted into a working position and a rest position in order to fix the sleeve of a supply roll on the receptacle and to release it again.
• the drive torque is transmitted to the supply roll by a hollow shaft as a motor drive shaft, which is preferably formed in one piece with the receptacle.
• the fixing device on the receptacle can be actuated by an adjusting element which is axially mounted in the hollow shaft.
• the hollow shaft has recesses in which one Spring device is arranged.
• the spring device ensures that a sleeve tension acts on the actuating element, so that the actuating element returns the fixing device to a rest position that fixes the supply roll.
• An actuating device is arranged on the actuating element on the side opposite the receptacle in an axial position, which displaces the actuating element into a working position which releases the supply roll. In the rest position, a decoupling between the fixed actuating device and the actuating element rotating with the hollow shaft is created by a distance between these two in order to prevent friction between the fixed actuating device and the rotating actuating element.
• the actuating device is a membrane cylinder arranged in the extended axial direction of the actuating element.
• the actuation device is a lever mechanism with a lever arm which can be actuated by a membrane cylinder which is arranged in a parallel axial direction to the electric motor.
• Two receiving mandrels for guiding a supply roll may have an electric motor as drive ", respectively.
• the required power of the torque is distributed from an electric motor to two electric motors, which can be dimensioned correspondingly smaller.
• An ejector unit for stripping the roll of material from the receptacle can be arranged concentrically to the receptacle in the axial direction.
• the actuating element can be used, or pneumatic cylinders can be provided, which are formed parallel to the central axis. Exemplary embodiments of the invention are shown in the drawings and are described in more detail below.
• Figure 1 shows a reel changer in a partially shown cross section.
• FIG. 2 shows the electric motor for driving the roll changer according to FIG. 1 in cross section
• FIG. 3 shows the side view of the receptacle of the electric motor according to FIG. 2 intended for storing a supply roll;
• FIG. 4 shows the receptacle according to FIG. 3 in front view
• Fig. 5 shows a second embodiment of a drive-less rotary bearing in cross section
• FIG. 6 shows a schematically illustrated reel changer
• Fig. 7 shows a hollow shaft motor schematically in cross section
• FIG. 8 shows a cross section of a central drive with an actuating device which is elongated in the axial direction;
• FIG. 10 shows a cross section of a drive with an ejector unit
• 11 shows a reel changer in a side view
• 12 shows a schematic illustration of a central drive with a brake
• 13 is a graphic representation of a drive control.
• a roll changer 01 in particular a web-fed rotary printing press, for storing a supply roll 02 with a width of z. B. 300 mm to 1000 mm, on which a material web, in particular a printing material web, is wound, shown in partial cross section.
• a motor 03 in particular a synchronous motor 03, is provided for unilaterally driving the supply roll 02.
• the synchronous motor 03 has a drive shaft 04 which projects beyond the housing of the synchronous motor 03 on the side facing the supply roll 02. This protruding side of the drive shafts 04 serves as a receptacle 06 on which the supply roll 02 can be rotatably mounted.
• a support arm 08 pivotably mounted on the roll changer 01 can be adjusted in the direction of the longitudinal axis of the supply roll 02, so that the receptacle 06 of the synchronous motor 03 is provided on the inside of the supply roll 02 Sleeve 09 comes into engagement.
• radially projecting driver elements 11 are provided on the receptacle 06, which are integrally formed on the material of the drive shaft 04 and can transmit a torque to the supply roll 02 in a positive and frictional manner.
• a further support arm 12 is provided, which is also adjustable by means of an axial adjustment 13 in the direction of the longitudinal axis of the supply roll 02.
• a drive-less rotary bearing 14 is provided on the support arm 12 and absorbs the weight forces of the supply roll 02 on the side opposite the synchronous motor 03.
• On the side of the rotary bearing 14 facing the supply roll 02 there is a receptacle 16 which is essentially identical to the one Recording 06 is formed and also comes into engagement on the inside of the sleeve 09.
• a drive-free shaft 17 is provided, with which the rotary bearing 14 is supported on the support arm 12 in the direction of the longitudinal axis of the supply roll 02, so that larger axial forces can also be absorbed by the rotary bearing 14.
• At least the distances between the bearings of the two recordings 06; 16 are the same.
• a bearing of the recording 06; 16 is on the opposite sides of the support arm 08; 12 arranged.
• a distance between the two bearings of the recording 06; 16 corresponds approximately to the width of the support arm 08; 12th
• the structure of the synchronous motor 03 is shown enlarged in cross section.
• the receptacle 06 with the driver elements 11 is machined out of the drive shaft 04 by means of suitable machining processes.
• An additional cone between the sleeve 09 and the drive shaft 04 can thus be omitted.
• the synchronous motor 03 is designed in the manner of a field-weakenable synchronous motor 03, whereby it can be operated with a field weakening up to a ratio of 1:10.
• the motor 03 has six poles and "an electrical excitation.
• the rotor of the synchronous motor 03 has poles made of permanent magnets and the stator of the synchronous motor 03 has electrical excitation.
• the permanent magnets preferably have rare earth materials.
• a continuous standstill torque of the synchronous motor 03 is in the range from 100 Nm to 200 Nm.
• a maximum torque is in the range from 600 Nm to 800 Nm, in particular around 700 Nm.
• the synchronous motor 03 also has a theoretical idling speed in the range of 500 rpm. up to 600 rpm.
• a frequency converter for speed control is connected upstream of the synchronous motor 03.
• a rotation angle sensor is provided on the motor 03. An axis of rotation of this angle of rotation sensor is arranged coaxially to the axis of rotation of the rotor of the synchronous motor 03.
• a rotation axis of the supply roll 02 and a rotation axis of the rotor of the synchronous motor 03 are arranged coaxially with one another.
• a cooling device is provided on the synchronous motor 03, which is designed in the manner of a fan wheel.
• the synchronous motor 03 itself can be used as a braking device.
• Another possibility for cooling the motor 03 is cooling by means of water or a cooling fluid.
• Several motors 03 can be connected to a common coolant supply.
• the synchronous motor 03 is designed as a slip-on motor.
• a braking device 24 in particular a friction brake, is arranged on the synchronous motor 03 (FIG. 12).
• the braking device 24 is preferably designed as a disc brake.
• the brake 24 supports the braking effect of the motor 03, for. B. when braking the roll of material 02 during a normal stop, especially during a quick stop or during control processes.
• the brake 24 serves as a holding brake by ⁇ . B. perform the adhesive preparation on the material roll 02.
• the brake can be regulated, in particular can be changed, controlled or, in another embodiment, can be switched on and off in a clocked manner.
• the brake device 24, in particular a disc of a disc brake device, is preferably arranged concentrically to the rotor of the electric motor 03 and non-rotatably connected to it, in particular to the hollow shaft 04.
• FIG. 5 shows a second embodiment of a drive-less rotary bearing 18 that can be used on a reel changer 01.
• a drive-free shaft 9 is provided to absorb axial forces, with which the rotary bearing 18 is supported on the side opposite the receptacle 16.
• FIG. 6 shows a schematically illustrated reel changer 01 in cross section.
• the drive shaft 04 is on the side facing the supply roll 02 over the housing of the synchronous motor 03, not shown, and serves as a receptacle 06; 16 for the supply roll 02.
• the two recordings 06; 16 of the roll changer 01 each have their own servomotor 21 for adjusting the receptacle 06; 16 in the axial direction of the supply roll 02. It is advantageous if the servomotors 21 with the receptacles 06; 16 are movable. For this purpose, e.g. B. arranged a rack on the carrier of the reel changer 01, engage in each of the actuators 21 driven gears.
• FIG. 7 shows a further exemplary embodiment of a reel changer 01 with a motor 03, preferably a synchronous motor 03, as has already been described, shown schematically in simplified cross section.
• the electric motor 03 has a hollow shaft 04 as the drive shaft 04, which is connected to a receptacle 05, preferably in one piece, and at the same time is the rotor of the electric motor 03.
• the holding mandrel 05 is a mandrel 05 and, as the fixing device 26, has adjustable clamping jaws 26, which are abstracted in FIG. 7 and symbolized as a cone. With the clamping jaws 26, the sleeve 27 of a supply roll 02 can be fix.
• An actuating element 29 is located in the hollow shaft 04.
• the actuating element 29 is an actuating shaft 29 which is arranged axially to the central axis of the electric motor 03 and which on the side to the holding mandrel 05 with the clamping jaws 26 by means of a mechanism known from the prior art, as for example in FIG which is disclosed in WO 02/24564 A1.
• the clamping jaws 26 are either pressed outwards against the sleeve 27 or drawn inwards to the central axis.
• the clamping jaws 26 are retracted when a new supply roll 02 is to be taken up or the sleeve 27 of the supply roll 02 is to be released from the take-up mandrel 05 again.
• the actuating shaft 29 is adjusted by an actuating device 30 at the end facing away from the arbor 05.
• the actuating device 30 can be any device known from the prior art, which can move a body under pressure and / or tension in at least two positions.
• the actuating device 30 can be a fluid-driven piston known from the prior art, which applies its compressive forces in the axial direction to the actuating shaft 29 and is therefore represented symbolically as an arrow in FIG. 7.
• the hollow shaft 04 has recesses 31 in the form of an axial cylinder, on the side facing away from the holding mandrel 05, in which plate springs 32 are arranged as a spring device 32.
• the plate springs 32 are delimited by a piston 33 which is fixedly connected to the actuating shaft 29.
• the plate springs 32 are thus located in a sleeve-shaped intermediate space 31 which is formed on the side facing the mandrel 05 by a fixed stop in the hollow shaft 04 and the movable piston 33 on the opposite side. If the plate springs 32 are in a relaxed idle state, the clamping jaws 26 in the holding mandrel 05 are pushed out as far as possible.
• the clamping jaws 26 move inwards to the central axis.
• the sleeve 27 of a supply roll 02 can then be released from the mandrel 05 and a new sleeve 27 can be received.
• the hollow shaft 04 is rotatably supported in the electric motor 03 via roller bearings 34.
• FIG. 8 shows a further embodiment of the central drive, which is provided at least on one of two holding mandrels 05 arranged in a known roll changer 01 for holding a material roll 02. 8 shows a partially cut cross section of the electric motor 03 with the hollow shaft 04.
• the piston 33 is screwed onto the adjusting element 29.
• the hollow shaft 04 forms a sleeve-shaped cavity with the actuating shaft 29 and the piston 33
• the piston 33 is pressed by an actuating device 30 in the direction of the holding mandrel 05, not shown, into a working position in order to pivot the clamping jaws 26 shown in FIG. 7 inwards.
• the actuating device 30 is arranged axially in the extended direction of the actuating shaft 29.
• the actuating device 30 comprises a membrane cylinder 35, which is controlled pneumatically. This is advantageous because compressed air is usually present in a manufacturing environment. In the rest position, in the relaxed state of the plate spring
• a so-called transmitter 37 is coupled to the drive shaft 04 via belts or a toothed chain.
• the encoder 37 detects the exact position and the speed of the electric motor 03 and the electric motor 03 controlled accordingly.
• FIG. 9 shows the central drive from FIG. 8.
• the actuating device 30 is designed as a lever mechanism.
• a lever arm 38 is actuated by a membrane cylinder 35.
• the membrane cylinder 35 is arranged with a parallel axis to the central axis of the electric motor 03.
• the lever arm 38 extends across the radius of the electric motor 03 with an extended end.
• a fixed pivot point is arranged on the outer radius of the electric motor 03 at the shorter end of the lever arm 38.
• the lever arm 38 is movable in the axial direction and is adjusted by the diaphragm cylinder 35.
• the lever arm 38 actuated by the membrane cylinder 35 preferably corresponds to 440 length units, the lever arm 38 pressing on the piston 33 preferably corresponding to 130 length units.
• the diaphragm cylinder 35 can thus be dimensioned correspondingly smaller than in the embodiment according to FIG. 8. This lowers the manufacturing costs and the required fluid pressure for the cylinder 35. Such an arrangement makes the central drive more compact than the embodiment according to FIG. 2.
• 10 shows a third embodiment of the central drive.
• two pneumatic cylinders 39 with a stroke of preferably 125 mm, are arranged parallel to the central axis of the electric motor 03 in order to form an ejector unit 40.
• the ejector unit 40 pushes the sleeve 27 of the supply roll 02 off the mandrel 05 when the supply roll 02 is to be replaced.
• the ejector unit 40 is positioned stationary on the central drive concentrically with the arbor 05 and thus does not move with the supply roll 02.
• 10 shows in cross section clearly the clamping jaws 26 of the holding mandrel 05, which press the sleeve 27 of the supply roll 02 radially apart slightly for better fixation.
• the roll changer 01 has two pairs of receptacles 05; 06; 16 for recording 05; 06; 16 each have a supply roll 02.
• the drive here is also advantageously carried out by synchronous motors 03.
• Both pairs of shots 05; 06; 16 can be swiveled around a common swivel axis using two reel-in supply rolls 02 or residual rolls. This pivoting movement is made possible by a servomotor 22.
• Each pair of shots 05; 06; 16 is only driven on one side by means of a drive motor 03. It is also possible to drive the two drive motors 03 of the two pairs of receptacles 05; 06; 16 to be arranged on the same side of the reel changer 01. The adjustment of the recording 05; 06; 16 in the axial direction of the supply roll '02 takes place via a separate servomotor 21.
• the torque control of the motors is realized by a digital speed controller with limiter.
• this speed controller with the setpoint 0 prevents the roll from accelerating uncontrollably by braking the roll to a standstill and holding it electrically.
• the web tension can be reduced to a predefined value when the machine is at a standstill.
• FIG. 13 shows an example of a diagram for drive control.

Priority Applications (4)

Applications Claiming Priority (4)

Publications (2)

Family

ID=34828325

Family Applications (1)

Country Status (7)

Cited By (3)

Families Citing this family (8)

Citations (7)

Family Cites Families (21)

• 2005
  • 2005-01-25 DE DE502005003377T patent/DE502005003377D1/de not_active Expired - Fee Related
  • 2005-01-25 ES ES05701605T patent/ES2281893T3/es active Active
  • 2005-01-25 EP EP07103429A patent/EP1790597B1/de not_active Not-in-force
  • 2005-01-25 AT AT07103429T patent/ATE389607T1/de not_active IP Right Cessation
  • 2005-01-25 US US10/587,373 patent/US20070170299A1/en not_active Abandoned
  • 2005-01-25 EP EP05701605A patent/EP1708942B2/de not_active Not-in-force
  • 2005-01-25 DE DE502005000503T patent/DE502005000503D1/de active Active
  • 2005-01-25 RU RU2006131051/11A patent/RU2006131051A/ru not_active Application Discontinuation
  • 2005-01-25 AT AT05701605T patent/ATE357393T1/de not_active IP Right Cessation
  • 2005-01-25 WO PCT/EP2005/050308 patent/WO2005073114A2/de active IP Right Grant

Patent Citations (7)

Non-Patent Citations (1)

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