US3162345A - Tape feeding apparatus - Google Patents

Tape feeding apparatus Download PDF

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Publication number
US3162345A
US3162345A US207954A US20795462A US3162345A US 3162345 A US3162345 A US 3162345A US 207954 A US207954 A US 207954A US 20795462 A US20795462 A US 20795462A US 3162345 A US3162345 A US 3162345A
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United States
Prior art keywords
ports
rim
wall
group
arcuate plate
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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.)
Expired - Lifetime
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US207954A
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English (en)
Inventor
Gallard Jean Hilaire Marcel
Sigel Pierre Louis
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Compagnie des Machines Bull SA
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Compagnie des Machines Bull SA
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Application filed by Compagnie des Machines Bull SA filed Critical Compagnie des Machines Bull SA
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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/38—Driving record carriers by pneumatic means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G23/00—Driving gear for endless conveyors; Belt- or chain-tensioning arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2812/00—Indexing codes relating to the kind or type of conveyors
    • B65G2812/02—Belt or chain conveyors
    • B65G2812/02128—Belt conveyors
    • B65G2812/02138—Common features for belt conveyors
    • B65G2812/02148—Driving means for the belts

Definitions

  • the present invention relates to pneumatic tape-driving apparatus.
  • the apparatuses hitherto employed to drive a tape by pneumatic action generally comprise a rotor rotatable continuously about a stator which is provided in its periphery with a cavity closed by the rim of the rotor in such manner as to form a distribution chamber.
  • the distribution chamber communicates through a valve either with a suction chamber or with a pressure chamber so as to apply suction or pressure, depending upon circumstances, through the apertures in the rim for the purpose of rendering possible or preventing the driving of the tape by the rotor of the apparatus.
  • this time lag has been reduced by reducing the volume of the distribution chamber and disposing the valve in the stator in the immediate neighbourhood of said chamber.
  • the pressure chamber and the suction chamber are then disposed in the periphery of the stator along the rim and a closure device is provided between the inner face of the rim and the periphery of the said chambers and is so arranged as to place the apertures in the rim selectively in communication with the pressure chamber or with the suction chamber.
  • the closure device comprises a grid so arranged as to take up either of two active positions in relation to the stator under the action of a control device.
  • peripheral apertures in the pressure chamber are placed in communication, through apertures in the grid, with apertures in the rim which come into alignment therewith in the course of the rotation of the rotor, or are closed by imperforate portions of the grid, while peripheral apertures in the suction chamber are closed by imperforate portions of the said grid or are placed in communication through apertures in the grid with apertures in the rim which come into alignment therewith in the course of the rotation of the rotor.
  • the closure device comprises a grid rotatable with the rotor and so arranged as to occupy, under the action of a control device, either of two active positions in relation to the rotor.
  • a control device either of two active positions in relation to the rotor.
  • FIGURE 1 is a vertical sectional view through an apparatus according to a first embodiment of the invention, the section being taken along the axis of rotation of a rotatable part of the apparatus,
  • FIGURE 2 is a vertical sectional view along the line 22 of FIGURE 1,
  • FIGURES 3a and 3b are views of a detail of an enlarged portion of FIGURE 1.
  • FIGURES 4a, 4b and 4c illustrate planar developments of certain cylindrical elements of the apparatus according to the first embodiment of the invention
  • FIGURE 5 is a vertical sectional view similar to FIG- URE 1, through apparatus according to a second embodiment of the invention,
  • FIGURE 6 is a vertical sectional view along the line 66 of FIGURE 5, and
  • FIGURES 7a, 7b and 7c are planar developments of certain cylindrical elements of the apparatus according to the second embodiment of the invention.
  • the tape driving apparatus illustrated in FIGURES 1 and 2 comprises a rotor 10, a stator 20, a closure device 30 and a motor 40 which controls the closure device 30.
  • the rotor 10 comprises a hub 101, a rim 11 and a web 15 connecting the hub to the rim on one side of the rotor.
  • the rim 11 has formed in its periphery a circular groove, the base of which is formed with apertures 12 in the form of slots parallel to the axis of rotation of the rotor. The said apertures lead to the inner face of the rim. The edges 13 of the groove serve to guide the tape 50.
  • the rotor 10 is keyed on a shaft 100, which is continuously rotated by appropriate means (not shown).
  • the stator 20 fixedly connected to the frame 200 of the apparatus is disposed along a portion of the inner face of the rim 11 of the rotor.
  • FIGURE 2 it will be seen that the tape 59 which is to be driven by the device is wound around a portion of the rim situated within an angle A.
  • the stator is hollow and forms a pressure chamber 21 and a suction chamber 22.
  • the pressure chamber 21 extends along that portion of the rim which is situated within the angle A and contains the suction chamber 22, which extends only along that portion of the rim which is situated within the angle B, which is smaller than the angle A.
  • the pressure chamber 21 extends, in parallel relationship to the axis of rotation of the rotor, only along the edges of the groove 11,
  • the Wall 23 of said chamber along the rim of the rotor is formed with apertures 230.
  • the suction chamber 22 extends, in parallel relationship to the axis of rotation of the rotor, only along the central portion of the groove 11.
  • the wall 24 of said chamber along the rim of the rotor is formed with apertures 240.
  • the pressure chamber 21 is connected by a pipe 25 to a compressor (not shown) and is maintained by the latter at a superatmospheric pressure.
  • the suction chamber 22 is connected by a pipe 26 to a vacuum pump (not shown) and is maintained by the latter at a subatmospheric pressure.
  • the closure member 30 comprises a grid 31 disposed between the walls 23 and 24, on the one hand, and the rim 11 on the other hand.
  • the grid 31 is adapted to slide in a direction parallel to the axis of rotation of the rotor so as to pass from one of its two active positions a rectilinear reciprocating movement.
  • FIGURES 3a and 3b to the other. It may be controlled by any driying device capable of producing An electromagnet designed, for example, in a manner similar to that of a driving member of an. electrodynamic loudspeaker,-conforms to this condition and, in addition, makes it possible to produce highlinear speeds by reason of its low inertia.
  • the grid 31 is rigidly conected by the rod 35 'to the coil 41 of such a driving member 40.
  • the control circuit of the electromagnet must supply a current of high strength only during the period of move'ment of the grid.
  • the grid can be maintained'in eachof its active positions by a current. of much lower strength.
  • the grid' 31 is so guided as to slide without'friction between the rim 11 of the rotor and the Walls 23 and 24' of thepressure and suction chambers. This ensures I longer useful life of the apparatus.
  • the dimeru sions. parallel to the axis of rotation of the rotor, of, the apertures 310 in the grid31 and of the apertures 230,- 240 in the Walls 23 and '24 are equal to one another andatsmost equal to the dimensions, in the'direction parallel to the same axis, of the imperforate portions .r
  • the apertures and'the imper for'a'te portions ofthe grid 31 andpdfjthe walls 23 and 24 are 50 arranged that if thefgrid is situated in its active position to theleft, as shownin FIGURE 3a,
  • FIGURES 5, 6, 7a, 7b and 7c illustrate another embodiment of-the invention.
  • theclosure device is so arranged as to pivot about the axis of the rotor instead of sliding in parallel relationship to that axis.
  • This embodiment of the invention utilisesa stator and a rotor which are substantially identical to those previously descrihed.
  • Theclosure device comprises a grid 31 connected to a sleeve 32 by a recessed cheek 33.
  • The'l sleeve 3'2 is so mounted as to be able to pivot on thatportion of thestator which forms therbeari'ng surface "'27. The.
  • closure device caniflthus pivot about the axis of rotation of the rotor so as to pass from one of its active positions to the other, and it is driven byan electromagnet 43 'acting, aga inst the action of a return spring44, 45 fixed to the sleeve32 in 'aradial posi- FIGURES 7a, .7b and. 7c illustrate respectively plane developments of the rim 1 1, of the "grid'31 and a of the according to this second shape and the relative posit'ioning of the, apertures of the said elements.
  • This shape rind-thisrelative positioning apertures 230 "in the Wall '23 and its apertures 310 are" I aligned withth'e apertures 240 in the Wall24.
  • the closure device may, in accordance with amod ified em- "fbodimen't of the invention, be mounted onthe rotor in such manner as to rotate therewith and tooccupy'selee tively, under the action of a control device, either of two active positions on'the'said rotor.v closure device,
  • a tape feeding 'apparatus comprising a rotor co'nstituted of a rotatableshell mounted on a rotating shaft and having a cylindricalirim Withjari exterior surface and an interiorisurface, said cylindrical rim being pro- ,jlmunication of. air-between said exterior surface and said vided with radially extending aperture whi'challdw corn- 1 interior surface, a stator disposed within said.
  • a tape feeding apparatus comprising two parts circumferentially extending along said wall on either side of said suction chamber, ports of said first group of ports being distributed in two axially spaced circumferentially extending areas of said wall, and the second group of ports being located in a central area of said wall intercalated between said two axially spaced areas, whereby suction is set up from the longitudinal axis towards the edges of that portion of the tape which is located within said tape-contacting angle at the instant when the suction chamber is placed in communication with portions of said rim passing through the tape-contacting angle as a result of the valve being shifted to its second operating position by the electrically controlled actuator.
  • a tape feeding apparatus comprises a part linking said two circumferentially extending parts along said wall, said linking part being located behind said suction chamber in the direction of rotation of the rotor, ports of said first group of ports being located in an area of said Wall linking said two axially spaced areas, said linking area being located behind said central area in the direction of rotation of the rotor and being permanently in communication with said interior surface of the rim, whereby during the driving of the tape by the rotor, when the plate of said air distributing means occupies its second operating position, that portion of the tape which adheres to the rotor during its passage over the suction chamber, ceases to adhere to the rotor and is thrust away during its passage over the linking part of the pressure chamber.
  • a tape feeding apparatus comprising a rotor constituted of a rotatable shell mounted on a rotating shaft and having a cylindrical rim with an exterior surface for engaging said tape and an interior surface, said rim being provided with a plurality of elongated apertures extending between said exterior surface and said interior surface thereof, a stator disposed within said shell and comprising a pressure chamber and a suction chamber, said chambers being separated from each other by a partition disposed perpendicularly to the axis of said shaft, said chambers being peripherally limited by an arcuate thin Wall parallel to the interior surface of said rim and extending angularly within the contacting portion of the tape with the exterior surface of said rim, a first group of ports being provided in said wall for allowing communication of air between said pressure chamber and said outer side of said wall, a second group of ports being provided in said wall for allowing communication of air between said suction chamber and said outer side of said wall, and an air distributing means including an arcuate thin plate located between said outer side of said wall

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Advancing Webs (AREA)
US207954A 1961-07-18 1962-07-06 Tape feeding apparatus Expired - Lifetime US3162345A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR868192A FR1308591A (fr) 1961-07-18 1961-07-18 Appareil pneumatique d'entraînement de bande

Publications (1)

Publication Number Publication Date
US3162345A true US3162345A (en) 1964-12-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
US207954A Expired - Lifetime US3162345A (en) 1961-07-18 1962-07-06 Tape feeding apparatus

Country Status (3)

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US (1) US3162345A (fr)
FR (1) FR1308591A (fr)
GB (1) GB952697A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3827358A (en) * 1972-05-23 1974-08-06 Ruesch F Maschf Device for moving a web in a rotary printing press for the printing of varying formats
US4344552A (en) * 1979-04-19 1982-08-17 Agfa-Gevaert Ag Independent drive for a roller cavity suction apparatus
US20030045415A1 (en) * 1999-07-13 2003-03-06 C.G. Bretting Manufacturing Company, Inc. Vacuum assisted roll apparatus and method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3465320A (en) * 1966-01-10 1969-09-02 Ibm Convex-surfaced vacuum controlled air film
DE3843246C1 (fr) * 1988-12-22 1990-05-23 J.M. Voith Gmbh, 7920 Heidenheim, De

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3082925A (en) * 1960-12-05 1963-03-26 Soroban Engineering Inc Vacuum capstans
US3118582A (en) * 1961-03-14 1964-01-21 Rca Corp Tape control apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3082925A (en) * 1960-12-05 1963-03-26 Soroban Engineering Inc Vacuum capstans
US3118582A (en) * 1961-03-14 1964-01-21 Rca Corp Tape control apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3827358A (en) * 1972-05-23 1974-08-06 Ruesch F Maschf Device for moving a web in a rotary printing press for the printing of varying formats
US4344552A (en) * 1979-04-19 1982-08-17 Agfa-Gevaert Ag Independent drive for a roller cavity suction apparatus
US20030045415A1 (en) * 1999-07-13 2003-03-06 C.G. Bretting Manufacturing Company, Inc. Vacuum assisted roll apparatus and method

Also Published As

Publication number Publication date
GB952697A (en) 1964-03-18
FR1308591A (fr) 1962-11-09

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