Classifications

• • G—PHYSICS
  • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
  • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
  • G09F11/00—Indicating arrangements for variable information in which the complete information is permanently attached to a movable support which brings it to the display position
  • G09F11/18—Indicating arrangements for variable information in which the complete information is permanently attached to a movable support which brings it to the display position the display elements being carried by belts, chains, or the like other than endless
  • G09F11/21—Indicating arrangements for variable information in which the complete information is permanently attached to a movable support which brings it to the display position the display elements being carried by belts, chains, or the like other than endless the elements being flexible sheets
• • G—PHYSICS
  • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
  • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
  • G09F11/00—Indicating arrangements for variable information in which the complete information is permanently attached to a movable support which brings it to the display position
  • G09F11/18—Indicating arrangements for variable information in which the complete information is permanently attached to a movable support which brings it to the display position the display elements being carried by belts, chains, or the like other than endless
  • G09F11/22—Electric control therefor
• • G—PHYSICS
  • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
  • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
  • G09F7/00—Signs, name or number plates, letters, numerals, or symbols; Panels or boards
  • G09F2007/007—Signs without covering windows

Definitions

• the invention relates to an interchangeable poster device in which a carrier film can be unrolled in a first direction of movement from a first winding roller and rolled onto a second winding roller or unrolled in a second direction of movement from the second winding roller and can be rolled onto the first winding roller, in which the carrier film in a predetermined manner Positions posters can be applied, in which these positions are provided with markings which can be determined by means of a sensor device for emitting position signals for the movement of the carrier film.
• a billboard device of this type is known from WO 89/03 570.
• the carrier film is guided between the two winding rollers over two front deflection rollers, the spacing of which corresponds approximately to the width of a poster. These deflecting rollers guide the carrier film with the posters behind a transparent pane of the device housing.
• the sensor device indicates when a correct poster position has been reached in order to stop the drive of the carrier film for a time in which the set poster can then be viewed.
• the carrier film is thus gradually shifted from poster position to poster position, whereby both directions of movement of the carrier film are used.
• DE 28 22 392 A1 discloses a winding device for transporting a film, which has two winding rollers, each of which is assigned an electric motor which can be driven by reversing the potential of the current in both directions of rotation. The film is driven continuously.
• a drive device for a film reader which also has two winding rollers.
• An electric motor that can be driven by reversing the polarity of the current in both directions of rotation is assigned to the winding rollers.
• the polarities of the currents are chosen such that the electric motor upstream in the direction of movement pulls the film, while the electric motor downstream in each direction of movement brakes the film.
• the two electric motors are assigned individual motor controls that regulate the electric motors with respect to the polarity and magnitude of the currents in dependence on the existing winding diameter of the film on the two winding rollers, so that the speed of movement of the film is independent of the Direction of movement and position reached is approximately constant.
• this drive device is also not suitable for an interchangeable poster device in which the carrier film carries posters in predetermined positions, so that the winding diameter does not change continuously, but rather depends on the loading of the carrier film with posters.
• each poster position must be controllable independently of it and the carrier film must be adjustable accordingly.
• each winding roller is associated with an electric motor that can be driven by reversing the polarity of the current in both directions of rotation, that the polarities of the currents of the electric motors in each direction of movement of the carrier film are selected such that the electric motor arranged upstream in the direction of movement the carrier film pulls, while the electric motor arranged downstream in the direction of movement brakes the carrier film, so that each motor is individually assigned a motor control with program memory, respectively the polarity and the magnitude of the current of the associated Elect romotores depending on the position it has reached the carrier foil so that regulates the speed of movement of the carrier film, regardless of the motion ⁇ "rect and the position reached is approximately constant, with increasing in the direction of movement position the current of the electric motor assigned to the upstream winding roller gradually decreases, while the current of the electric motor assigned to the downstream winding roller increases gradually, that each electric motor is coupled via a gearbox to the associated winding roller and is connected via a position feedback to the associated motor control that
• a kind of continuous run over several positions is obtained according to one embodiment in that the processor supplies the motor controls with a forward spin Is i gna l in addition to the forward run ri tts i gna l, which can be used for the continuous run of the carrier film in the first direction of movement, or in addition the backward step is a backward step Isi gna l, which can be used for the continuous running of the carrier film in the second movement direction.
• the reference position signal, the position signals, the advance step signal, the reverse step signal, the Forward pulse signal and the reverse pulse signal are pulse-shaped, with the processor supplying the forward control signal, the reverse control signal, the forward pulse signal and the reverse pulse signal via associated control lines and via an adaptation circuit to the motor controls.
• the control is carried out in such a way that the processor with the i mpu Isför i gen Vorlaufsehi rtsi gna l causes the two motor controls to switch the carrier film by one position in the first direction of movement and that the motor controls from their program memory
• the polarities and magnitudes of the currents intended for the electric motors are taken from and supplied to them, and that the processor with the pulse-shaped return step signal causes the two motor controls to switch the carrier film back by one position in the second movement direction
• the processor with the impulsive Vorlaufspulsigna l and the pending Vorlaufschri ttsigna l causes the two motor controls to run continuously the carrier film in the first direction of movement
• the processor with the with the remindspuu Is i gna l and the pending remindlaufschri ttsi gna l the two Motor controls for permanent caused on the carrier film in the second direction of movement and that the motor controls take from their program memories the polarities and sizes of the currents
• the sequence can be determined in a simple manner in that the processor can be programmed for various poster sequences and in that the individual programs can be selected with time specifications.
• the invention is explained in more detail with reference to an embodiment shown in the drawings. It shows:
• Fig. 3 shows the Stro in the two electric motors in the first direction of movement of the carrier film
• Fig. 4 shows the current profile in the two electric motors in the second direction of movement of the carrier film.
• the billboard device has a carrier film 5 which can be transported between two winding rollers 1 and 2 in a first direction of movement V and a second direction of movement R.
• the winding rollers 1 and 2 are driven by electric motors M1 and M2.
• the carrier film 5 is rolled up onto the winding roller 1 and is unwound from the winding roller 2.
• the carrier film 5 is rolled up onto the winding roller 2 and is rolled off from the winding roller 1.
• the end positions of the carrier film 5 can be marked with special markings which differ from the positions (poster positions) 1 to n marking 10 at a distance and, for example, in width from the base markings for the end positions.
• the carrier film 5 is guided between the two winding rollers 1 and 2 over two deflection rollers 3 and 4, which are arranged directly behind a transparent pane of a device housing.
• the distance between the deflecting rollers 3 and 4 is adapted to the width of a poster 8, which is held on the front of the carrier film 5 in Ha Itestrei fen 7, which are attached to the carrier film 5 at a distance of the width of the poster 8.
• the width of the carrier film 5 is somewhat larger than the height of the poster 8, so that the markings 10 can be arranged, for example, on the lower edge.
• the holding strips 7 are only connected to the carrier film 5 via a web 9, so that they form groove-shaped receptacles on both sides with the carrier film 5 for inserting the poster 8.
• the poster 8 can also be held electrostatically on the carrier film 5.
• the winding rollers 1 and 2 are driven by gears 13 and 15 which are connected downstream of the electric motors M2 and M1 and are coupled to the winding rollers 1 and 2. If the carrier film 5 is transported in the direction of movement V, then the electric motor M1 drives the winding roller 2 counterclockwise. The carrier film 5 is pulled and rolled up on the winding roller 2.
• the electric motor M2 receives a current that wants to drive the winding roller 1 in a clockwise direction, but cannot because the tensile moment on the carrier film 5, which is transmitted from the electric motor M1 to the carrier film 5, predominates and only one movement of the carrier film 5 in Movement direction V permits.
• the inlet and outlet of the carrier film 5 take place on the mutually facing outer sides of the winding rollers 1 and 2.
• the entry and exit of the carrier film 5 can, however, also be moved to the mutually facing inner sides in the winding rollers 1 and 2.
• the directions of rotation of the winding rollers 1 and 2 and thus the polarities of the currents through the electric motors M1 and M2 are each opposite.
• the inlet and outlet on one winding roller can be placed on the outside and on the other winding roller on the inside.
• Blockschaltbi ld for 'Fig. 2 is a
• the reference position signal io is emitted when an end position of the carrier film 5 in the first or second direction of movement V or R is reached.
• This Reference position signal io arrives at the motor controls MS1 and MS2 and via this to a central processor P and serves to set a defined starting position, from which the positions 1 to n are counted and marked with the markings 10.
• the sensor device 11 emits an i mpu isiform position signal ip.
• These position signals ip are counted in the motor controls MS1 and MS2 and in the processor P, so that the positions 1 to n which have just been set can be seen in these units.
• the motor controls MS1 and MS2 are checked themselves because they have a position feedback RF and thus detect the setting to a new position 1 to n.
• the processor P sends the reverse signal Br to the motor controls MS1 and MS2, then the carrier film 5 is moved in the direction of movement R by one position in a similar manner.
• the motor controls MS1 and MS2 take the currents required for this by polarity and size again from their program memories, in which the currents by size and polarity are specified for the positions to be set for the two movement directions V and R.
• the continuous running can take place continuously or step-wise across the positions.
• the position controls are used to inform the motor controls MS1 and MS2 and the processor P of the position reached.
• Reverse Stepsigna l Br and the reverse pulse signal Spr are issued.
• the modification can also be such that only the forward pulse signal Spv and the reverse pulse signal Spr are sufficient for continuous continuous running in the movement directions V and R, while the additional delivery of the forward step signal Is Bv or the reverse step signal Is Br is step by step Endurance run in the movement directions V and R is carried out.
• the endurance run can only be used to move to a certain position.
• FIG. 3 shows how the magnitude of the currents Jm1 and Jm2 must be depending on the positions in order to compensate for the changing Wi diameter Lw Dw of the winding rollers 1 and 2 so that the carrier film 5 between the winding rollers 1 and 2 a has approximately constant speed when it is adjusted from position to position.
• the short start-up and stop time span remains for the Electric motors M1 and M2 disregarded.
• the dependencies of the currents Jm1 and Jm2 shown in FIG. 3 are assumed to be linear for the sake of simplicity, since the speed of the electric motors M1 and M2 is approximately proportional to the current supplied and the winding diameter Dw together with the speed together with the path of the carrier film 5 required for a poster change with influenced.
• the current Jm2 begins with the maximum value and decreases gradually from position to position. It should be noted that the numbering of the positions of the carrier film 5 in this case run in the other direction, i.e. always in the direction of movement of the carrier film 5. The current Jm1 now increases gradually from zero.

Landscapes

• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Engineering & Computer Science (AREA)
• Theoretical Computer Science (AREA)
• Displays For Variable Information Using Movable Means (AREA)
• Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=6412541

Family Applications (1)

Country Status (5)

Cited By (3)

Families Citing this family (3)

Citations (7)

Family Cites Families (1)

• 1990
  • 1990-08-20 DE DE4026270A patent/DE4026270C1/de not_active Expired - Fee Related
• 1991
  • 1991-07-31 EP EP91913004A patent/EP0544692A1/de not_active Withdrawn
  • 1991-07-31 CA CA002089757A patent/CA2089757A1/en not_active Abandoned
  • 1991-07-31 WO PCT/DE1991/000613 patent/WO1992003813A1/de not_active Application Discontinuation
  • 1991-08-19 IL IL9922891A patent/IL99228A/en not_active IP Right Cessation

Patent Citations (7)

Also Published As

Similar Documents

Legal Events