US3908583A - Conveying apparatus with controlled spray means for coating printed products - Google Patents

Conveying apparatus with controlled spray means for coating printed products Download PDF

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Publication number
US3908583A
US3908583A US360471A US36047173A US3908583A US 3908583 A US3908583 A US 3908583A US 360471 A US360471 A US 360471A US 36047173 A US36047173 A US 36047173A US 3908583 A US3908583 A US 3908583A
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United States
Prior art keywords
stream
bonding agent
products
conveying
liquid
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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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US360471A
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English (en)
Inventor
Jurg Eberle
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Fehr and Reist AG
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Fehr and Reist AG
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/06—Control of flow characterised by the use of electric means
    • G05D7/0617—Control of flow characterised by the use of electric means specially adapted for fluid materials
    • G05D7/0629—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means
    • G05D7/0635—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means by action on throttling means

Definitions

  • a pressure container for the liquid is connected both with a conveying conduit and via a mechanical-pneumatic or electro-pneumatic converter, which can be controlled by regulating signals, with a compressed air source.
  • the conveying stream can be regulated by influencing an air cushion, i.e., a transmission element which itself reacts with inertia.
  • an air cushion i.e., a transmission element which itself reacts with inertia.
  • a signal transmitter for the regulating signals and coupled with the converter is synchronously driven with a conveyor mechanism for the fish-scale stream product sections.
  • a spray head which is coupled via the conveying conduit with the pressure container containing a bonding or adhesive agent.
  • the regulating magnitude or parameter the velocity or speed of movement of the conveying mechanism; it is converted, for instance, by means of a tacho-generator into electrical voltage signals, and the pressure in the pressure container increasing proportional to the infeed speed of the products.
  • FIG. 1 schematically illustrates components of the apparatus structure of this development and also components of a package sorter
  • FIG. 2a is a longitudinal sectional view of a spray head used with the arrangement of FIG. 1;
  • FIG. 2b is an end view of the spray head depicted in FIG. 2a, looking in the direction of the arrow X thereof;
  • FIG. 3 is an electric circuit diagram of the equip ment
  • FIGS. 3a and 3b illustrate balancing or adjustment graphs for the control circuit of an electro-pneumatic converter.
  • the apparatus serves the purpose of stabilizing packages formed from printed products arriving in Overlapping fish-scale formation as is known in the newspaper or publishing art for instance.
  • a small amount or spot of bonding agent at least at the printed products located closer to the top of the package or stack, in order to prevent such products from laterally sliding-off during transport of the package.
  • bonding agent there should be applied a small amount or spot of bonding agent at least at the printed products located closer to the top of the package or stack, in order to prevent such products from laterally sliding-off during transport of the package.
  • success depends to a considerable extent upon the application of a sufficient quantity of bonding agent or adhesive to the printed products.
  • Preceding the formation of the package is the subdivision of the fish-scale stream of products into sections containing the number of product copies which are provided for each package. These sections are then stacked into a package.
  • This operation occurs in a socalled package sorter in that a separation element controlled by a counting pulse transmitter engages at the appropriate location into the fish-scale product stream and thus causes a temporary damup of the products at the point of attack of the separation element, while at the same time the products which have already passed beneath the separation element can be further conveyed until there is present a gap or space at the fishscale product stream. Thereafter, the separation element is brought out of engagement, until after throughpassage of the number of copies which are decisive for the next package, the operation described above repeats.
  • FIG. 1 there is indicated by reference character 1 the conveyor band or belt of the package sorter which has not been particularly illustrated as to its further details, this conveyor band 1 being driven by a drive roller or roll 2.
  • the stack forming elements comprise a further conveyor band 3, serving as the stack support, as well as a stop 4 against which impact the printed products, for instance newspaper copies 5, and which stop 4 can be selectively placed out of its product engaging position. If the package 6 which is in the process of being formed is complete, then, the stop or impact member 4 is brought out of its operable position and the package 6 is transported away by means of the conveyor band 3. At this point of time, the individual copies of the products, especially those copies located further towards the top of the stack, should bear sufficiently against one another.
  • a spray head 7 serves to deliver a suitable bonding agent or adhesive in the form of a spray jet 8 to the newspaper copy or other article being processed. If the conveying stream, in other words in this particular instance more accurately termed the spray stream of the bonding agent were constant, then depending upon the change in the velocity v with which the newspaper copies 5 move through the spray stream or jet 8, the quantity of bonding agent which is delivered and deposited upon the individual product copies will correspondingly fluctuate. Hence, as already mentioned, the spray stream must be regulated or controlled as a function of this velocity v.
  • the spray stream if forced out of a pressurized container or vessel 9 which, in turn, is connected via an immersion tube 10 with a conveying line or conduit l l and thus with the spray head 7 and, on the other hand, via an electro-pneumatic converter or transducer 12, with the schematically illustrated compressed air source 100.
  • the last-mentioned connection encompasses a pressure reduction valve 13, between such reduction valve 13 and the converter 12 the conduits or lines 14 and 15 and finally between the latter and the container 9 the conduit 16.
  • the air pressure ahead of the reduction valve 13 possesses the value P, after the pressure reduction valve 13 the value P and after the converter 12 and therefore also in the pressurized vessel or container 9 the value P
  • the pressures P and P are constant, the pressure P varies as a function of the electro-pneumatic converter 12 which, as is known, changes the pressurein the case under considerationin direct proportion to the electrical voltage delivered thereto.
  • Complete details of a suitable constructional form of such an electro-pneumatic converter have been disclosed in the accompanying instructions concerning the use of such equipment and the replacement part lists No. E/P-lOO-DI, April, 1969, of the concern Conofiow Europa N.V., Dordrecht. Holland.
  • Such equipment works according to the principle of force comparison and forms an electrical input signal into a proportional pneumatic output pressure.
  • the input signal is delivered in the form of an electric voltage from a tacho-generator l7 driven via a drive belt 18 from the drive roller 2 of the conveyor band 1.
  • This signal which is proportional to the speed of the conveyor band 1 under the explained conditions, arrives by means of the conductor or line 19 and via the electronic circuit, generally designated by reference character 20 (see also FIG. 3), at the converter 12.
  • the electronic circuit 20 comprises a potentiometer 21a for the basic adjustment or setting (compare FIG. 3b) and a potentiometer 22a for the regulation or control region setting (compare FIG. 3a).
  • the conical spray nozzle 21 of the spray head 7 is controlled by a needle valve 24 which is connected with an armature 24 enclosed by a magnet coil 23 and retained in closed position by a spring 25.
  • a conductor or line 26 By means of a conductor or line 26 (see also FIG. '3) the coil 23 is connected with the electronic circuit, so that such is energized by the simultaneous actuation of three switches.
  • the first switch 27 (FIG. 3) simultaneously serves as the main switch of the apparatus.
  • Both of the other switches or scanners 28 and 29 are designed as photoelectric cells, and these photoelectric cells are arranged beneath the path of movement of the newspapers or the like and are actuated thereby. As best seen by referring to FIG.
  • both of the switches 28 and 29 are closed after the front end of a fish-scale stream section arrives at the region of the spray jet 8, until approximately the next to last product copy has reached the region of the spray jet.
  • What is decisive for this mode of operation is the spacing of the photoelectric cell 29 from the photoelectric cell 28.
  • the needle valve 22 thus frees the spray nozzle at such time and only for such length of time as spraying of the bonding agent or adhesive is sensible.
  • Electronic circuit 20 includes a conventional timing element through which the nozzle release action can be somewhat delayed so that the first few copies of the fish-scale product stream section do not receive any bonding agent. This does not constitute any drawback, since at the region of such product copies the friction, brought about by the weight of the further product copies situated on top of the first few copies is large enough to prevent slip-out of the lower situated product copies.
  • the adhesive or bonding agent arrives from the inlet of the spray head 7 through channel 31 of the armature at the spray nozzle 21.
  • This spray nozzle 21 is enclosed by a ring nozzle 32, to which there is delivered via an extension of the conduit 14, namely via the conduit 33 compressed air which is reduced in pressure to the value P,, by a further pressure reduction valve 34. With the aid of this air there is formed the spray jet 8.
  • the spray head 7, as best seen by referring to FIG. 2b, possesses two further slot-shaped air outlets or discharges 35 which are likewise supplied via the conduit 33 and serve the purpose of flattening the spray jet 8.
  • the pressure P at the pressurized container 9 increases or decreases respectively as a function of the speed v with which the newspapers move past the spray jet 8.
  • the conveying stream that is to say, the amount of bonding agent or adhesive sprayed per unit of time, increases or decreases, with the result that the newspapers always receive the same (useful) quantity of adhesive material.
  • pressurized container does not of necessity preclude a continuous conveying action. For instance, it would be possible to continuously replenish the liquid into the pressurized container from a suitable source, in order to insure for continuous operation.
  • the electro-pneumatic converter is completely capable of also compensating for the stepwise refilling of liquid into the container. With the particularly described use, there are thus not necessary those measures, since with the relatively low requirement of bonding agent the required interruption in the operation of the equipment enables refilling of the container.
  • a bonding agent conveying apparatus comprising means for conveying said products in a fish-scale sequence, means for generating a regulating signal having a value which varies in accordance with the speed at which said products are being conveyed, a source of compressed air, a pressurized container for a liquid bonding agent, converter means controlled by said regulating signal and connecting the compressed air source with said pressurized container for regulating the pressure in said pressurized container in accordance with the speed at which said products are being conveyed, means proximate said conveyor for forming a regulatable spray stream of said liquid bonding agent onto said printed products, means for conveying the pressurized liquid bonding agent in said container to said liquid stream forming means, the rate of flow of said bonding agent into said liquid spray stream forming means being proportional to the pressure in said container and being substantially proportional to the speed at which said products are being conveyed, and means for
  • said means for forming a regulatable stream of said bonding agent includes a spray nozzle, an electromagnetic valve means for controlling said spray nozzle, and scanner means responsive to the infeed of a fish-scale product stream into the path of the stream of bonding agent for releasing the spray nozzle to discharge a stream of bonding agent toward said product stream.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Making Paper Articles (AREA)
  • Packaging Of Special Articles (AREA)
  • Coating Apparatus (AREA)
US360471A 1972-05-23 1973-05-15 Conveying apparatus with controlled spray means for coating printed products Expired - Lifetime US3908583A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH760372A CH538113A (de) 1972-05-23 1972-05-23 Fördereinrichtung mit regelbarem Förderstrom für eine Flüssigkeit und Verwendung dieser Einrichtung bei der maschinellen Bildung von Paketen aus Druckereierzeugnissen

Publications (1)

Publication Number Publication Date
US3908583A true US3908583A (en) 1975-09-30

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US360471A Expired - Lifetime US3908583A (en) 1972-05-23 1973-05-15 Conveying apparatus with controlled spray means for coating printed products

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US (1) US3908583A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CH (1) CH538113A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2323671A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2185791A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1429275A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2642889A1 (de) * 1976-09-24 1978-03-30 Albert Zimmer Verfahren und vorrichtung zum tropfenweisen dosieren von fluessigen bis viskosen massen
US4084539A (en) * 1976-09-24 1978-04-18 Copar Corporation Voltage to air pressure transducer
US5366553A (en) * 1985-11-07 1994-11-22 Burford Corporation Sequence controller
AU688767B2 (en) * 1993-07-19 1998-03-19 Cryovac, Inc. Jet spray applicator for viscous liquids including adhesive/cohesive solutions

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2162770B (en) * 1984-08-08 1987-10-07 Bl Tech Ltd A flow control system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2775952A (en) * 1955-06-08 1957-01-01 Ecusta Paper Corp Spray device
US3026045A (en) * 1961-04-03 1962-03-20 Ralph R Reading Spray device
US3104986A (en) * 1960-08-08 1963-09-24 Robert L Goman Fluid dispensing system
US3175247A (en) * 1962-03-26 1965-03-30 Stoody Co Method and apparatus for coating welding rods
US3348519A (en) * 1964-06-29 1967-10-24 Columbian Carbon Automatic glue dispensing apparatus
US3412899A (en) * 1966-04-22 1968-11-26 Ct De Rech S De Pont A Mousson Liquid pouring installation

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2775952A (en) * 1955-06-08 1957-01-01 Ecusta Paper Corp Spray device
US3104986A (en) * 1960-08-08 1963-09-24 Robert L Goman Fluid dispensing system
US3026045A (en) * 1961-04-03 1962-03-20 Ralph R Reading Spray device
US3175247A (en) * 1962-03-26 1965-03-30 Stoody Co Method and apparatus for coating welding rods
US3348519A (en) * 1964-06-29 1967-10-24 Columbian Carbon Automatic glue dispensing apparatus
US3412899A (en) * 1966-04-22 1968-11-26 Ct De Rech S De Pont A Mousson Liquid pouring installation

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2642889A1 (de) * 1976-09-24 1978-03-30 Albert Zimmer Verfahren und vorrichtung zum tropfenweisen dosieren von fluessigen bis viskosen massen
US4084539A (en) * 1976-09-24 1978-04-18 Copar Corporation Voltage to air pressure transducer
US5366553A (en) * 1985-11-07 1994-11-22 Burford Corporation Sequence controller
AU688767B2 (en) * 1993-07-19 1998-03-19 Cryovac, Inc. Jet spray applicator for viscous liquids including adhesive/cohesive solutions

Also Published As

Publication number Publication date
CH538113A (de) 1973-06-15
DE2323671A1 (de) 1973-12-06
FR2185791A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1974-01-04
GB1429275A (en) 1976-03-24

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