EP4477424A2 - Support de rouleau pour rouleau d'étiquettes et imprimante d'étiquettes - Google Patents

Support de rouleau pour rouleau d'étiquettes et imprimante d'étiquettes Download PDF

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Publication number
EP4477424A2
EP4477424A2 EP24000122.2A EP24000122A EP4477424A2 EP 4477424 A2 EP4477424 A2 EP 4477424A2 EP 24000122 A EP24000122 A EP 24000122A EP 4477424 A2 EP4477424 A2 EP 4477424A2
Authority
EP
European Patent Office
Prior art keywords
roll
label
roll holder
paper
holder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP24000122.2A
Other languages
German (de)
English (en)
Other versions
EP4477424A3 (fr
Inventor
Johann Wehrmann
Ralf Clement
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bizerba SE and Co KG
Original Assignee
Bizerba SE and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bizerba SE and Co KG filed Critical Bizerba SE and Co KG
Priority to EP24000122.2A priority Critical patent/EP4477424A3/fr
Publication of EP4477424A2 publication Critical patent/EP4477424A2/fr
Publication of EP4477424A3 publication Critical patent/EP4477424A3/fr
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J15/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in continuous form, e.g. webs
    • B41J15/02—Web rolls or spindles; Attaching webs to cores or spindles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0025—Handling copy materials differing in width
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J15/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in continuous form, e.g. webs
    • B41J15/04—Supporting, feeding, or guiding devices; Mountings for web rolls or spindles
    • B41J15/042—Supporting, feeding, or guiding devices; Mountings for web rolls or spindles for loading rolled-up continuous copy material into printers, e.g. for replacing a used-up paper roll; Point-of-sale printers with openable casings allowing access to the rolled-up continuous copy material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J15/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in continuous form, e.g. webs
    • B41J15/04—Supporting, feeding, or guiding devices; Mountings for web rolls or spindles
    • B41J15/046—Supporting, feeding, or guiding devices; Mountings for web rolls or spindles for the guidance of continuous copy material, e.g. for preventing skewed conveyance of the continuous copy material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J15/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in continuous form, e.g. webs
    • B41J15/16—Means for tensioning or winding the web
    • B41J15/165—Means for tensioning or winding the web for tensioning continuous copy material by use of redirecting rollers or redirecting nonrevolving guides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • B41J3/4075—Tape printers; Label printers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/44—Typewriters or selective printing mechanisms having dual functions or combined with, or coupled to, apparatus performing other functions
    • B41J3/46—Printing mechanisms combined with apparatus providing a visual indication
    • 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
    • B65H19/123—Lifting, transporting, or inserting the web roll; Removing empty core with cantilever 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
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • 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
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • 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
    • 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
    • B65H23/16—Registering, tensioning, smoothing or guiding webs longitudinally by weighted or spring-pressed movable bars or rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H26/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms
    • B65H26/06—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to predetermined lengths of webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/18—Constructional details
    • B65H75/24—Constructional details adjustable in configuration, e.g. expansible
    • B65H75/242—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages
    • B65H75/248—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages expansion caused by actuator movable in axial direction
    • 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
    • B65H2301/4132—Cantilever arrangement
    • B65H2301/41324—Cantilever arrangement linear movement of roll support
    • B65H2301/413243—Cantilever arrangement linear movement of roll support parallel to roll axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2402/00—Constructional details of the handling apparatus
    • B65H2402/50—Machine elements
    • B65H2402/52—Bearings, e.g. magnetic or hydrostatic bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/19—Specific article or web
    • B65H2701/192—Labels

Definitions

  • the present invention relates to a roll holder for a label roll and a label printer, in particular a label printer with a roll holder for a label roll.
  • Label printers in particular label printers for labeling food packaging, comprise a rotatable roll holder which is designed to carry a label roll made of a wound-up paper tape.
  • the roll holder comprises, for example, a stop in the axial direction against which the label roll, in particular the core of the label roll, is struck when applied to the roll holder, so that the label roll is in a defined position along the axial direction of the roll holder. If the individual paper layers of the label roll are rolled up exactly one above the other on the label roll, the edges of the paper tape are always in a predetermined axial position when it is unrolled. The paper tape, which is under tension, is therefore not twisted along the paper path.
  • F-Wrap or C-Wrap packaging is increasingly being used.
  • This packaging is marked with a label that is not only on one side of the packaging, but runs completely around the packaging (F-Wrap) or is attached to three sides of the packaging (C-Wrap).
  • F-Wrap runs completely around the packaging
  • C-Wrap is attached to three sides of the packaging
  • the label to be applied has an elongated shape, i.e. the extension of the label in one direction is significantly larger, for example four to eight times as large as the Expansion of the label in the direction perpendicular to it.
  • a label roll with F-Wrap or C-Wrap labels corresponds to the length of the label
  • significantly more labels can be wound up with the same roll diameter than if the roll width corresponds to the short side of the label.
  • Such a label roll has a roll width of between 30 cm and 50 cm, for example.
  • label rolls, especially linerless label rolls without a carrier tape, of this width often cannot be rolled up in such a way that the edges of the individual paper layers of the paper tape are aligned. Instead, these label rolls often have an S-shaped course on their sides, which means that if the roll core is axially aligned on the roll holder, an axial alignment of the side edges of the paper tape cannot automatically be achieved over the entire length of the paper.
  • a device is known from the prior art in which a paper sensor detects an edge of the unrolled part of the paper tape and, based on the current position of the edge of the paper tape or the direction in which the edge of the paper tape is currently moving, uses a motor to control the axial position of the roll holder and thus the axial position of the roll core in such a way that the axial displacement of the paper tape on the label roll is compensated.
  • the paper tape is guided safely through the paper path and the paper does not twist.
  • a roll holder is complex and expensive.
  • the aim of the invention is to find a more cost-effective and less maintenance-intensive solution.
  • a roll holder for a label roll is proposed.
  • the label roll is in particular a linerless label roll, i.e. a label roll without a carrier tape.
  • the label roll is in particular rolled up crosswise.
  • the person skilled in the art understands this to mean that it is a paper tape made up of several labels attached next to one another, a so-called endless tape, with the labels lying next to one another with the long side in the unrolling direction of the label roll, so that the short side of each label corresponds to the longitudinal direction of the paper tape.
  • the paper tape is intended so that individual labels can be separated from the paper tape using a cutting unit, printed by a label printer before or after separation if necessary, and then applied to packaging using a corresponding device, in particular as an F-wrap or C-wrap label.
  • the width of the label roll and thus the long side of a label is between 150°mm and 500°mm.
  • the short side of the label is between 50°mm and 150°mm long.
  • the paper tape wound on the label roll is several hundred meters long.
  • the roller haller comprises a horizontally arranged axle which is supported on at least one side by a frame.
  • the horizontally arranged axle is supported on one side by a frame, while the other side of the axle is free-floating and thus not supported.
  • the roller holder further comprises a rotatable roller holder which is aligned parallel to the axis and is mounted on the axis.
  • the roller holder is mounted on the axis with at least one linear bearing and is linearly
  • two linear bearings are present which enable the roller holder to be displaced on the axis, wherein the two linear bearings are attached in particular to the axial end regions of the roller holder.
  • linear bearing is a bearing that allows the roller holder to be moved along the axis in both axial directions, i.e. forwards and backwards on the axis.
  • linear bearing does not include any statement as to whether the bearing allows or blocks rotation of the roller holder on the axis.
  • this displacement can be compensated by an opposite displacement of the roll holder, so that twisting of the paper tape in the paper path is prevented. This is particularly advantageous for wide label rolls.
  • the roll holder aligns itself to the corresponding axial position of the paper web by the paper tension if the paper edges in the paper path are guided or held at a defined position.
  • a sensor for detecting the current paper position along the axial direction and a control unit with a motorized actuator for axially moving the roll holder can be omitted.
  • the linear bearing is a plain bearing.
  • the linear bearing is a linear ball bearing, in particular a linear ball bearing with Angular error compensation.
  • a linear ball bearing allows a linear displacement of the roll holder on the axis with low frictional resistance. This is advantageous because the linear displacement of the roll holder on the axis of the roll holder is caused by the paper tension of the paper tape in the paper path.
  • a smooth linear displacement of the roll holder supports the function of the mechanism.
  • a linear ball bearing with angular error compensation is necessary if the axis bends slightly due to the weight of the label roll. Since the weight of the label rolls is several 10 kg, especially over 25 kg, there is always slight bending, especially with an axis that is freely floating at one end, which is compensated for by a linear bearing with angular error compensation.
  • the linear bearing with angular error compensation compensates not only for the bending of the axis but also for misalignment of the housing bores or the holder of the axis in the housing.
  • the axle is connected to the frame in a rotationally fixed manner.
  • the roll holder is rotatably mounted on the axle.
  • the at least one linear bearing is a linear ball bearing, which enables both an axial movement and a rotational movement of the roll holder on the axle.
  • the axial mobility of the roll holder on the axle by the linear ball bearing compensates for the offset of the individual paper layers transversely to the unwinding direction on the label roll.
  • the linear ball bearing also enables a rotational movement of the roll holder on the axle for unwinding the paper tape from the label roll.
  • the axle is rotatably supported by the frame.
  • the roller holder is connected to the axle in a rotationally fixed and linearly movable manner.
  • the roller holder is connected to the axle in a rotationally fixed manner via a driver and the driver transfers a rotation of the roller holder to the axle.
  • the linear bearing is a Linear ball bearing. The driver prevents the rotational movement of the roller holder on the axis, but this rotational movement would in principle be made possible by the linear ball bearing.
  • the linear ball bearing in particular a linear ball bearing with angle error compensation, has the advantage that tolerances are compensated. The use of a linear ball bearing is therefore also advantageous in this embodiment.
  • the driver consists of a sleeve with a slot in the axial direction.
  • the sleeve is connected to the axle in a rotationally fixed manner.
  • This also means that the sleeve and the axle are not directly connected to one another, but via an intermediate element.
  • the technical effect is that a rotational movement caused by the sleeve also causes a rotational movement of the axle.
  • a pin connected to the roll holder engages in the slot of the driver. This has the advantage that a rotational movement of the roll holder is transferred to the sleeve with the help of the pin. The rotational movement is transferred to the axle through the rotationally fixed connection of the sleeve and the axle.
  • the design of the sleeve with a slot in the axial direction and the rotationally fixed connection between the roller holder and the sleeve, through the pin that engages in the slot creates a driver that can be moved in the direction of the slot, i.e. in the axial direction. This enables the roller holder to be moved on the axle in the axial direction and at the same time the rotationally fixed connection between the roller holder and the axle.
  • the sleeve of the driver or the axle is connected to a brake disc in a rotationally fixed manner.
  • the brake disc is connected by a band to a deflection roller located in the paper path.
  • the band is guided around the brake disc so that the brake disc rotates in a loop formed by the band. If the band is tensioned by pulling on the end of the band in a direction away from the brake disc, it exerts a frictional force on the brake disc and brakes the brake disc.
  • one end of the band is fixed in a fixed position. The other end of the band is fixed to a movable holder for a deflection roller of the paper path.
  • the band is made of stretchable material.
  • the band is formed from a flexible but non-stretchable material, in particular from a sheet metal, in particular a steel sheet, in particular a steel sheet with a thickness between 0.15°mm and 0.45°mm, in particular 0.3°mm.
  • the roller holder consists of a base body, in particular a tubular base body. At least one rail, in particular three rails, which are open in the radial direction, is attached to the base body.
  • the base body is mounted on the axle so that it can move linearly via the at least one linear bearing.
  • the at least one rail guides a clamping element that can move at least radially, in particular a clamping plate. In one embodiment, a clamping plate is guided in each rail so that it can move radially and axially.
  • the roller holder has an operating lever at its axial end.
  • the operating lever can be moved from a working position to an installation position via an eccentric.
  • an eccentric is understood to mean an element that can be rotated about a pivot point, in which the distance between the pivot point and an edge of the element is measured in the horizontal plane changes when the element is rotated.
  • the operating lever in the installation position protrudes from the roll holder in an extension of the axis of the roll holder, i.e. the operating lever is aligned in its longitudinal direction in the axial direction of the axis.
  • the at least one clamping plate is adjusted in the radial direction by moving the operating lever from the installation position to the working position via the eccentric.
  • the at least one clamping plate comprises a guide rail that runs on a pin in the at least one rail of the base body.
  • the guide rail is arranged in such a way that a movement of the clamping plate in one axial direction of the base body leads to a radial displacement of the clamping plate outwards and a movement of the clamping plate in the other axial direction of the base body leads to a radial displacement of the clamping plate inwards.
  • the eccentric and the clamping plate interact in such a way that a movement of the operating lever from the installation position to the working position leads to a displacement of the clamping plate in the axial direction, by which the clamping plate is guided outwards by the guide rail in the radial direction.
  • the eccentric and the clamping plate interact in such a way that a movement of the operating lever from a working position to an installation position leads to a displacement of the clamping plate in the axial direction, by which the clamping plate is guided inwards by the guide rail in the radial direction.
  • an adjusting element is coupled to the operating lever. Turning the operating lever along or against the direction of rotation of the base body causes a movement of the at least one clamping plate in the axial direction of the base body.
  • the adjusting element is positively connected in the direction of rotation of the The base body is connected to the operating lever so that turning the operating lever causes the adjustment element to turn. Turning the adjustment element changes the distance between the base body and the adjustment element.
  • the adjustment element also comprises a driver for the at least one clamping plate, with which the clamping plate is moved in the axial direction with the adjustment element.
  • the roller holder in particular the base body, comprises a locking device for locking the roller holder in a central position along a displacement path of the roller holder on the axis.
  • the central position is not to be interpreted in such a way that the roller holder must have an exactly identical travel path in both axial directions away from the central position. Rather, the central position is to be understood in such a way that the locking takes place essentially in the middle of the travel path, so that movement in both axial directions is possible after the locking is released. The locking does not lock the roller holder in an axial end position.
  • a label printer for printing on a paper tape wound on a label roll.
  • the label printer comprises a roll holder for the label roll and at least one print head for printing on the paper tape.
  • the label printer has a paper path that runs along the direction of movement of the paper tape from the roll holder to the print head.
  • the paper tape is separated into individual labels by a cutting device between the roll holder and the print head.
  • the paper path is to be understood as the direction of movement from the roll holder to the print head.
  • the label printer comprises a deflection roller along the paper path, along which the paper tape is guided. The deflection roller has the effect that the paper path changes direction at the deflection roller and the deflection roller guides the paper tape accordingly.
  • the Label printer comprises a roll holder in one of the previously described embodiments.
  • the deflection roller comprises a paper guide device.
  • the paper guide device comprises a guide element on each side of the paper strip, wherein the guide elements are adjustable and lockable in the axial direction of the deflection roller.
  • the guide elements are motor-adjustable.
  • the guide elements are manually adjustable.
  • the guide elements are coupled to one another, so that adjusting one guide element in one direction leads to adjusting the other guide element in the opposite direction.
  • the guide elements form a guide for the edges of the paper strip. Since the paper strip is under tension on the deflection roller, the axial position of the paper strip on the deflection roller is defined via the guide elements. The axial position of the roll holder follows this position accordingly, so that the paper strip is not twisted when guided between the paper roll and the deflection roller, regardless of whether the top paper layer is offset from the roll core.
  • the deflection roller comprises markings along its axial direction which indicate positions for an arrangement of the guide elements on the deflection roller.
  • the markings are related to the position of the at least one print head and/or the paper width of the label roll. This has the advantage that the markings show the operator the positions of the guide elements to which the guide elements must be set for a certain paper width in order to feed the paper tape to the print head in the correct position for printing in a designated field.
  • the label printer comprises a control device comprising an input device.
  • the control device receives at least one paper width of a label roll from the input device.
  • the control device comprises a processor which determines axial positions of the guide elements on the deflection roller from the received paper width. In one embodiment, the axial positions of the guide elements on the deflection roller are shown on a display unit. In one embodiment, the processor controls an adjustment unit which moves the guide elements by motor to the determined axial positions on the deflection roller.
  • the deflection roller is held by a pivotable arm.
  • the arm is pre-tensioned by a spring and the spring pulls the arm in a direction in which the distance along the paper path between the roll holder and the print head becomes longer.
  • the tension of the paper ribbon pulls the arm in a direction in which the distance along the paper path between the roll holder and the print head becomes shorter.
  • the tension of the paper ribbon or by tightening the paper ribbon the arm is pulled against the spring force. This has the effect that when the paper ribbon is transported, for example by a transport roller, the paper is tightened and the deflection roller is pulled in a direction in which the paper path becomes shorter.
  • the spring force pulls the arm in the opposite direction.
  • the spring force outweighs the tension of the paper ribbon and the arm is pulled in a direction in which the paper path becomes longer.
  • distance from the deflection roller to the print head is for illustrative purposes.
  • the deflection roller defines a deflection point for the paper tape in the paper path.
  • the paper tape runs with its flat side over the deflection roller.
  • the paper tape runs with its non-adhesive side over the deflection roller.
  • the paper tape runs with its adhesive side over the deflection roller, wherein the deflection roller is provided with an anti-adhesive coating.
  • the adhesive side of the paper tape comprises a plurality of longitudinal strips of adhesive material, wherein the longitudinal strips are narrow in comparison to the width of the paper tape.
  • the longitudinal strips of adhesive material are interrupted at the points at which the paper tape is intended for separating individual labels.
  • the label printer comprises an actuator, in particular a pneumatic cylinder.
  • the actuator moves the arm against the spring force into an installation position. In the installation position, the distance along the paper path between the roll holder and the print head is short. This means that the actuator pushes the arm against the spring force, which, as described above, tensions the paper ribbon. In other words, the actuator pushes the arm into a position in which the paper ribbon, if a paper ribbon is inserted in the paper path, is relaxed.
  • the actuator is triggered by the control device of the label printer.
  • the control device of the label printer triggers the actuator when a sensor detects the opening of the cover of the label printer or the control device receives a signal from the input device that the label roll should be changed.
  • the actuator moves the arm and the deflection roller into a position in which, after a new label roll has been placed on the roll holder, the paper ribbon is fed into the paper path from the Roll holder can be inserted to the print head.
  • the actuator moves, a gap is created between a print roller and the print head or a transport roller and a counterholder to the transport roller by another actuator, so that the end of the paper ribbon can be inserted into the gap. If the transport roller and counterholder or the print roller and print head and the arm are then returned to their original position, the label printer is ready for operation again.
  • the band which is connected to the brake disk is attached at one end to the pivotable arm.
  • the band runs over at least part of the circumference of the brake disk.
  • the band runs in a loop or in part of a loop around the brake disk.
  • the band is tensioned around the brake disk when the pivotable arm moves with the spring force and the band is relaxed around the brake disk when the pivotable arm moves against the spring force. This has the effect that the brake disk and thus the roll holder with the label roll are braked when the paper path becomes longer, i.e. when more paper is unwound from the roll than is processed by the print head. This prevents the paper roll from running on when the transport of the paper tape is stopped.
  • the roll holder in particular the base body or in particular an end element on the base body, comprises a locking device for locking the roll holder in a central position along a displacement path of the roll holder on the axis.
  • the linear displacement of the roll holder on the axis is prevented by the locking device.
  • the roll holder If the roll holder is locked with the locking device, in particular in the middle of the axial displacement path, and remains in this axial position when the paper roll is applied, the roll holder can move in both axial directions during printing operation after the locking device is released.
  • the locking device is triggered when the sensor for the cover detects the opening of the cover.
  • the locking device is coupled to the actuator, in particular the pneumatic cylinder of the arm.
  • the locking device consists of a movable holding plate that engages in a slot in the roll holder.
  • Fig. 1 shows a cross-sectional drawing of a label roll 11.
  • the drawing serves to illustrate the effect that the individual paper layers 14a, 14b, 14c are not rolled up flat at the edges in a vertical direction relative to one another. This effect is particularly pronounced when it comes to cross-wound and therefore very wide label rolls 11, such as those used for F-wrap labeling.
  • a label roll 11 is, for example, up to 50 cm wide.
  • the label roll 11 is wound around a roll core 13.
  • the center of the roll core 13 defines the axis 12 of the label roll 13, around which the endless tape of the label roll 11 is unwound.
  • the individual paper layers 14a, 14b, 14c of the endless tape are continuously wound onto the label roll 11.
  • the production process causes a horizontal shift of the individual paper layers 14a, 14b, 14c, so that bulges 16 and indentations 15 are created on the left and right vertical edges of the label roll 11. This means that the individual paper layers 14a, 14b, 14c can be shifted horizontally relative to one another. Since the top paper layer is always unwound, a vertical shift of the paper strip occurs when the paper strip is unwound from the label roll 11.
  • Fig. 2a and 2b show a roll holder of a label printer for a label roll 11 in two different views.
  • the roll holder comprises a frame, which is attached to a labeler, for example an F-Wrap labeler.
  • the frame comprises a vertical support 21 which is continued by a holder 22 for a roll holder 80.
  • the roll holder 80 is rotatably attached to the holder 22 via ball bearings.
  • the roll holder further comprises a tensioning device 70 and a driver device 60.
  • the roll holder comprises a locking device 50 for locking the roll holder 80 in an axial position.
  • the roll holder further comprises a deflection roller 30 which is pivotally attached via a pivot device 40 and defines the paper band.
  • the pivot device 40 comprises a pivotable arm 41 which is pivotally attached about a pivot point 42.
  • the deflection roller 30 is rotatably attached to the pivotable arm 41.
  • the pivotable arm 41 is pulled by the spring force of a spring 46 in a direction 48 in which the paper path defined by the deflection roller 30 between the label roll 11 and the print head becomes longer.
  • a plunger 45 of a pneumatic cylinder 44 moves the pivotable arm 41 in an opposite direction 47 in which the paper path defined by the deflection roller 30 between the label roll 11 and the print head becomes shorter. This movement is limited by a stop 49 for the pivotable arm.
  • a flexible steel band 62 is attached to the pivotable arm 41, in particular near the pivot point 42, by means of a fastening mechanism 43 and is guided over a brake disk.
  • Fig. 3 shows the deflection roller 30 for the paper tape.
  • the paper tape which is unwound from the label roll 11, wraps around a rotatable roller 31 of the deflection roller 30.
  • the paper tape comprises a first side edge 12 and a second side edge 13.
  • the deflection roller 30 comprises a paper guide device.
  • a first guide element 32 which is movable in the axial direction is attached to the rotatable roller 31 and can be fixed in an axial position on the rotatable roller 31 with a first fixation 34.
  • a second guide element 35 which is movable in the axial direction is attached to the rotatable roller 31 and can be fixed in an axial position on the rotatable roller 31 with a second fixation 37.
  • the side edges 12, 13 of the paper strip slide along the inner sides 33, 36 of the respective guide element 32, 35. If the guide elements 32, 35 are fixed in the axial direction in such a way that the distance between the inner sides 33, 36 of the guide elements 32, 35 corresponds to the width of the paper strip, if necessary the width of the paper strip including a small tolerance, the paper strip wraps tightly around the rotatable roller 31 due to the paper tension and is guided in a defined manner.
  • the rotatable roller 31 further comprises markings 38 along its axial direction, which indicate positions for an arrangement of the guide elements on the deflection roller.
  • the markings 38 are related to the position of the at least one print head and/or the paper width of the label roll. This means that the markings 38 show an operator at which position in the axial direction he must fix the guide elements 32, 35 for a specific paper roll 11 with a defined width and a predetermined printing field.
  • Fig. 4 shows a locking device 50 for a roll holder for locking the roll holder 80 in a central position along the axial displacement path of the roll holder.
  • the locking device 50 consists of a movable holding plate 51, which engages with one end 53 in a slot 54 in the roll holder 80, in particular in a slot 54 of an end element 64 of the roll holder 80.
  • the locking device 50 comprises a locking guide 52, which is firmly connected to the holder 22 of the vertical support 21.
  • the holding plate 51 is linearly movable in the locking guide 52.
  • the holding plate 51 is moved into the locking position in the direction of the roller holder.
  • the view of the pneumatic cylinder 55 is obscured. If the pneumatic cylinder 55 is vented, the retaining plate 51 is pulled by a spring 56 into a release position in which the retaining plate 51 no longer engages with its end 53 in the slot 54.
  • Fig. 5a and 5b show a roll holder for a label printer.
  • the roll holder is shown in a cross-sectional drawing.
  • Fig. 5b shows a top view of the roll holder.
  • the roll holder is mounted with its horizontal axis 81 via ball bearings 82 in a holder 22.
  • the holder 22 continues a vertical support of the label printer in the vertical direction.
  • the axis 81 is with respect to Fig. 7 described below.
  • Fig. 5a and Fig. 5b show the carrier device 60 of the roll holder, which with reference to Fig. 6a and 6b described below.
  • Fig. 5a and 5b also show the clamping device 70, which with reference to Fig. 9a, 9b and 9c described below.
  • the roll holder comprises a roll holder 80.
  • the roll holder 80 consists of a base body 84 (see also Fig. 8a and 8b ), which is mounted on the axis 81 in a linearly movable manner via linear ball bearings 86, 87 with angle error compensation.
  • the travel path of the linear ball bearings 86, 87 on the axis 81 is not restricted by stops on the axis 81, since this travel path is restricted by the driver device 60.
  • the base body 84 of the roller holder 80 is designed as an elongated tube 89, which is mounted on the axis 81 via the linear ball bearings 86, 87.
  • the clamping plates move axially in the opposite axial direction, the clamping plates 83 are moved into the rails 88 via the pins 94 and via the guides 93 in the radial direction.
  • support elements 85 are arranged, which are fastened in screw connections 92 of the base body 84.
  • the support elements 85 interrupted by the rails 88, form a round contour of the roll holder 80.
  • the rails 88 have a smaller radial extent than the support elements 85.
  • the support elements 85 thus form a roll holder onto which the roll core is applied.
  • the diameter of the roll holder 80 formed by the support elements 85 is slightly smaller than the inner diameter of the roll core, so that the label roll 11 can be easily pushed onto the roll holder 80.
  • the clamping plates 83 protrude from the rails 88 and are radially displaceable.
  • the radial displaceability of the clamping plates 83 extends from a region in which the outer sides of the clamping plates 83 do not protrude radially beyond the support elements 85 to a region in which the outer sides of the clamping plates 83 protrude radially beyond the support elements 85. This makes it possible to clamp the roll core onto the roll holder 80 by radially moving the clamping plates 83.
  • the roll holder further comprises a driver device 60 which transmits a rotary movement of the roll holder 80, which occurs by unwinding the paper strip of the label roll 11, to the axis 81.
  • the driver device 60 comprises, as in Fig. 6b shown a sleeve 62, in the inner region 69 of which the roller holder 80, in particular a closing element 64 ( Fig. 6a ), which is connected to the base body 84 of the roller holder 80 is screwed with screws 65, is attached so as to be axially movable.
  • the end element 64 comprises a pin 63 which engages in an axial slot 66 of the sleeve 62. This allows an axial movement of the end element 64 in the sleeve 62.
  • the deflection of the axial movement is limited by the length of the slot 66.
  • the driver device 60 limits the travel path of the roller holder 80 on the axis 81 of the roller holder in the axial direction.
  • the sleeve 62 is attached to the axis 81 in a rotationally fixed manner.
  • the rotationally fixed connection is produced in particular via a bore 67 in a wall of the sleeve and an associated recess 68 in the bore 67.
  • the sleeve 62 is mounted with the bore 67 in a receiving area 67' on the axle 81, the axle comprising a nose 68 ⁇ which engages in the recess 68 and forms the rotationally fixed connection.
  • the sleeve 62 comprises bores 61 ⁇ in a side wall via which the sleeve is connected to a brake disk 61.
  • the brake disk 61 is braked as shown via a flexible steel band 62 when the pivotable arm 41 of the pivoting device 40 is moved by the spring force of the spring 46 in a direction in which the paper path is extended.
  • Fig. 8b shows holes 90, which are present in the axial direction in the base body 84, in which a cylinder 73 of the clamping device 70 is fastened with screws. Likewise, on the other, in Fig. 8b On the rear and therefore not visible side of the base body there are holes in which the end element 64 is screwed to the base body with screws.
  • the clamping device 70 is in the Fig. 9a, 9b , and 9c shown. Basically, the clamping device 70 has the function of axially displacing the clamping plates 83 relative to the base body 84 in the slots 88 of the base body 84.
  • the radial position of the clamping plates 83 with respect to the center point depends on the guides 93 in the clamping plates 83 and the pins 94, which are firmly connected to the base body 84. of the base body 84 depends on the axial position of the clamping plates 83 in the slots 88 of the base body 84. This means that by axially moving the clamping plates 83 in the slots 88 of the base body 84, the diameter of a cylinder that is clamped by the outer edges of the clamping plates 83 changes. This is effected via the clamping device 70.
  • two adjustment mechanisms are implemented via the clamping device 70 in order to adjust the radial position of the clamping plates 83 in the base body 84, both mechanisms being implemented with the assistance of an adjustment element 72.
  • the first mechanism changes the position of the clamping plates by rotating the adjustment element 72 and serves to establish a basic setting.
  • the second mechanism is effected by transferring an operating lever 71 from a working position in which the operating lever is aligned perpendicular to the axis 81 to an installation position in which the operating lever is aligned parallel to the axis 81.
  • This mechanism serves to firmly clamp the label roll 11 by transferring the operating lever 71 from the installation position to the working position after a label roll 11 has been applied to the roll holder, i.e. to move the clamping plates 83 outwards in a radial direction with this transfer of the operating lever 71.
  • the adjustment element 72 is in particular designed in one piece and consists of a rotary element 72a, a holder 72b for the operating lever 71, a drive plate 72c and a sleeve 72d.
  • the sleeve 72d forms the base body of the adjustment element 72 and is open on one side.
  • the drive plate 72c is attached to the sleeve 72d and the rotary element 72a is attached to the axial end of the sleeve 72d opposite the opening. In the axial direction between the drive plate 72c and the rotary element 72a there is a defined distance into which the clamping plates 83 engage with a coupling device 94.
  • the coupling device 94 is designed as a hook which can be inserted from the outside into the gap between the drive plate 72c and the rotary element 72a, the hook being formed by a sheet that has the width of the gap between the drive plate 72c and the rotary element 72a. The sheet is thus touched on one side by the drive plate 72c and on the other side by the rotary element 72a. If the adjustment element 72 is moved in the axial direction, the clamping plates 83 are also moved in the axial direction via the coupling device 94. Since the drive plate 72c and the rotary element 72a are concentric in the area in which they touch the coupling device 94, this effect is present regardless of the rotational position of the adjustment element 72.
  • the adjustment element 72 is attached to a cylinder 73 with the sleeve 72d, the cylinder forming a sliding surface for the sleeve 72d.
  • the cylinder 73 is firmly connected to the base body 84.
  • a screw 77 is screwed into an internal thread of the cylinder 73.
  • the operating lever 71 is tiltably attached to the screw head 74. Turning the screw 77 changes the distance between the cylinder 73 and the operating lever 71.
  • the operating lever 71 is mounted in the holder 72b of the adjustment element 72 such that it is tiltable, but is connected in a rotationally fixed manner in the direction of rotation of the screw 77.
  • the operating lever 71 has an eccentric 75 at its end, where it is pivotably connected to the screw head 74 of the screw 77.
  • a washer 76 rests on the screw 77 on the eccentric. This in turn rests on the adjusting element 72. If the operating lever 71 is moved from the installation position (not shown in the drawings, in extension of the axis 81) to the working position ( Fig. 9a and 9b ) is tilted from the horizontal position to the vertical position by turning about the screw head 74, the washer 76 on the screw 77 is moved in the direction of the cylinder 73 by the eccentric 75. The adjusting element 72 is moved in the direction of the base body 84. The clamping plates 83 are pushed radially outwards.
  • a spring presses the adjusting element 72 in the direction of the operating lever 71 until the washer 76 rests on the eccentric.
  • the distance between the adjusting element 72 and the base body 84 increases and the clamping plates 83 are retracted.
  • the mechanism is housed by a cover 78.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • ROM read only memory
  • RAM random access memory

Landscapes

  • Unwinding Webs (AREA)
  • Handling Of Continuous Sheets Of Paper (AREA)
EP24000122.2A 2021-08-02 2021-08-02 Support de rouleau pour rouleau d'étiquettes et imprimante d'étiquettes Pending EP4477424A3 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP24000122.2A EP4477424A3 (fr) 2021-08-02 2021-08-02 Support de rouleau pour rouleau d'étiquettes et imprimante d'étiquettes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP21189241.9A EP4129876B1 (fr) 2021-08-02 2021-08-02 Porte-rouleau pour un rouleau d'étiquettes et imprimante d'étiquettes
EP24000122.2A EP4477424A3 (fr) 2021-08-02 2021-08-02 Support de rouleau pour rouleau d'étiquettes et imprimante d'étiquettes

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP21189241.9A Division EP4129876B1 (fr) 2021-08-02 2021-08-02 Porte-rouleau pour un rouleau d'étiquettes et imprimante d'étiquettes

Publications (2)

Publication Number Publication Date
EP4477424A2 true EP4477424A2 (fr) 2024-12-18
EP4477424A3 EP4477424A3 (fr) 2025-05-14

Family

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EP21189241.9A Active EP4129876B1 (fr) 2021-08-02 2021-08-02 Porte-rouleau pour un rouleau d'étiquettes et imprimante d'étiquettes
EP24000122.2A Pending EP4477424A3 (fr) 2021-08-02 2021-08-02 Support de rouleau pour rouleau d'étiquettes et imprimante d'étiquettes

Family Applications Before (1)

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EP21189241.9A Active EP4129876B1 (fr) 2021-08-02 2021-08-02 Porte-rouleau pour un rouleau d'étiquettes et imprimante d'étiquettes

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US (1) US12208611B2 (fr)
EP (2) EP4129876B1 (fr)
ES (1) ES3004136T3 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7261905B2 (ja) * 2019-12-20 2023-04-20 富士通フロンテック株式会社 ロール支持装置
ES2986754T3 (es) * 2021-12-13 2024-11-12 Fameccanica Data Spa Un robot de manipulación de rollos y un método para manipulación de rollos de material laminar.
JP7844309B2 (ja) * 2022-10-26 2026-04-13 東芝テック株式会社 プリンタ
CN116605727A (zh) * 2023-05-19 2023-08-18 绍兴市上虞涂附磨具有限公司 高强度砂带卷及其生产设备
DE102024109251A1 (de) * 2024-04-03 2025-10-09 Krones Aktiengesellschaft Portabler Etikettenrollenhalter für Behälteretikettiervorrichtung
CN121341735B (zh) * 2025-12-16 2026-03-06 婴舒宝（中国）有限公司 一种护理裤生产用卷材上料装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE738578C (de) * 1941-03-29 1943-08-21 Dielektra Ag Vorrichtung zum Erzielen eines faltenfreien Laufes abzuwickelnder Bahnen, insbesondere Papierbahnen
US4141517A (en) * 1978-03-22 1979-02-27 Martin Automatic, Inc. Apparatus for adjusting the lateral position of a rolled web
US4990215A (en) * 1988-12-02 1991-02-05 Minnesota Mining And Manufacturing Company Web-aligning apparatus
US5087318A (en) * 1988-12-02 1992-02-11 Minnesota Mining And Manufacturing Company Web-aligning apparatus
JP3489777B2 (ja) * 1997-09-16 2004-01-26 東芝テック株式会社 ロール紙保持装置

Also Published As

Publication number Publication date
ES3004136T3 (en) 2025-03-11
US12208611B2 (en) 2025-01-28
EP4129876A1 (fr) 2023-02-08
US20230033033A1 (en) 2023-02-02
EP4129876B1 (fr) 2024-10-16
EP4477424A3 (fr) 2025-05-14

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