EP1115576B1 - Dispositif de poudrage a apport de poudre constant - Google Patents

Dispositif de poudrage a apport de poudre constant Download PDF

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Publication number
EP1115576B1
EP1115576B1 EP99934606A EP99934606A EP1115576B1 EP 1115576 B1 EP1115576 B1 EP 1115576B1 EP 99934606 A EP99934606 A EP 99934606A EP 99934606 A EP99934606 A EP 99934606A EP 1115576 B1 EP1115576 B1 EP 1115576B1
Authority
EP
European Patent Office
Prior art keywords
powder
container
intermediate container
powder device
sensor
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.)
Expired - Lifetime
Application number
EP99934606A
Other languages
German (de)
English (en)
Other versions
EP1115576A1 (fr
Inventor
Reiner Haas
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.)
Weitmann and Konrad GmbH and Co KG
Original Assignee
Weitmann and Konrad GmbH 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 Weitmann and Konrad GmbH and Co KG filed Critical Weitmann and Konrad GmbH and Co KG
Publication of EP1115576A1 publication Critical patent/EP1115576A1/fr
Application granted granted Critical
Publication of EP1115576B1 publication Critical patent/EP1115576B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/06—Powdering devices, e.g. for preventing set-off

Definitions

  • the invention relates to a powdering device for powdering printed sheet with the characteristics of the generic term of Claim 1.
  • a sheet delivery device has a powder device, with which the powder is applied to the sheets.
  • the powder devices usually have one Powder container in which the powder is stored.
  • This Powder container has an opening at its lower end that e.g. is closed by a ball (DE 38 11 309 A1).
  • the ball is in the container and thus in the stored Pounded in powder, which loosens the powder becomes.
  • compressed air is generated when the container is open blown.
  • the powder removed from the powder container falls into a mixture conditioner in which the compressed air with powder enriched and a powder-air mixture is generated.
  • Another device provides that the outflow opening the powder container from a moving disc is closed. If the disc is moved, it trickles out a gap between the disc and the outflow opening of the Powder container a certain amount of powder. This powder is made by a flowing air flow is captured and carried away. Becomes in this device the powder container e.g. for refilling removed, then the air can no longer be enriched with powder become. Continuous operation is not possible.
  • DE-A-1 611 317 discloses a powdering device for powdering printed sheet.
  • the powder device is made by one Storage container and a mixing container formed.
  • the DE-A-3 819 203 discloses a pollination device in which the Outlet opening of the storage container via a swinging Disc is covered.
  • the invention has for its object a powder device provide with which a continuous Operation guaranteed even when changing the powder container is.
  • the powder container powder taken out is not directly discharged into the air flow is, but gets into an intermediate container, of which the Powder over the dosing element the actual air flow over the Dosing device is supplied.
  • the intermediate container serves as further storage room, so that e.g. when replacing the powder container powder still taken from the intermediate container can be, whereby a continuous operation also with (briefly) removed powder container is guaranteed.
  • the powder in the Intermediate container has a largely constant bulk density has, regardless of whether the powder just before has recently been filled into the powder container and thus still has a relatively high proportion of air, or whether the Powder filled into the air container some time ago and has a higher bulk density. Since the Powder flows from the powder container into the intermediate container and the dwell time in the intermediate container is relatively constant, is the powder with almost constant bulk density and therefore with an almost constant proportion of air in the metering device passed. This way the powder content in the Compressed air set even more precisely to the desired value.
  • the powder container Intermediate container and the dosing element in a vertical orientation are arranged one behind the other and the powder from one element on the other hand is passed down.
  • the powder flows from the powder container over the intermediate container exclusively via gravity to the dosing device and it no transport air is required.
  • the The intermediate container is essentially funnel-shaped is. This has the main advantage that the powder can set within the intermediate container, that is, in the Air contained in powder can escape, making the powder a contains homogeneous bulk density. The air is through the gradual narrowing of the cross section of the intermediate container expelled from the powder.
  • the intermediate container at least in sections has elastic outer wall.
  • the powder container has the powder container in Vibratory means, e.g. a vibrator or one Drive for opening and closing the outflow opening on and usually the dosing organ also causes Vibrations that are transferred to the intermediate container. These vibrations cause movements in the elastic Container wall, so that baking due to these movements of the powder on the inner wall of the container is prevented. On there is constant flow of powder in the direction of the outlet thus guaranteed. There is the elastic Outer wall immediately in front of the dosing device. There is even the smallest cross section in the intermediate container, where the Danger of bridging is highest.
  • Vibratory means e.g. a vibrator or one Drive for opening and closing the outflow opening on and usually the dosing organ also causes Vibrations that are transferred to the intermediate container. These vibrations cause movements in the elastic Container wall, so that baking due to these movements of the powder on the inner wall of the container is prevented. On there is constant flow of powder in the direction of the outlet thus guaranteed.
  • the intermediate container a sensor that detects the fill level of the powder having. If the fill level drops below a specified level Value, then powder is removed from the powder container and the Intermediate tank filled up.
  • the hysteresis can be between the sensor signal and the filling can be chosen arbitrarily.
  • the intermediate container is advantageously always refilled when about 10% of the powder volume has been removed has been.
  • the senor is on optical sensor, an inductive sensor or a capacitive Sensor.
  • an optical sensor this can e.g. as Photoelectric switch designed with visible or infrared light his.
  • the drawing shows a lower section of a Powder container 1, which means in a container receptacle 2 a quick release system 3 is attached.
  • the Container holder 2 swings perpendicular to the plane of the drawing.
  • the Powder container 1 has at its lower end 4 Outflow opening 5 for the one stored in the powder container 1 Powder on.
  • This outflow opening 5 opens into an overall designated 6 intermediate container, which in turn in a total of 7 dosing organ opens.
  • This Dosing member 7 is elastically supported by its drive. Between the bottom of the container holder 2 and the There is a gap 8 at the top of the intermediate container 6, through which the interior of the intermediate container 6 with the Environment is connected. There is in the intermediate container 6 thus ambient pressure.
  • the lower end 4 of the powder container 1 protrudes relatively far into the intermediate container 6, whereby it is ensured that no or only from the gap 8 negligible powder leaks.
  • the gap 8 has also the advantage that the intermediate container 6 of the Container receptacle 2 is decoupled and thus also from the Swinging movements of the powder container 1.
  • the section 9 of the powder container facing Intermediate container 6 has an upper cylindrical Jacket section 10 and a lower cylindrical jacket Section 11, which has a smaller diameter than that Has jacket section 10.
  • the two jacket sections 10 and 11 are over a truncated cone shaped section 12 connected to each other.
  • At the free end of the bottom Jacket section 11 is an upper cylindrical one Shell section 14 of a lower section 13, pushed.
  • This jacket section 14 also includes frustoconical shell portion 15, which in a cylindrical lower jacket section 16 runs out.
  • This lower jacket section 16 is on the dosing member 7 connected.
  • the section 13 of the intermediate container 6 consists of a elastic material, e.g. Plastic or rubber, whereas section 9 made of a rigid material, e.g. aluminum consists. Because the metering element 7 is switched on and off, in particular the drive of the metering element 7 Vibrations initiated in section 13. These vibrations or movements cause deformation of the elastic Wall of section 13, whereby the in the intermediate container 6 powder is loosened or at least caking, Columns and bridges are prevented. An outflow or outflow of the powder in the direction of the lower Outlet opening is thus guaranteed.
  • a elastic material e.g. Plastic or rubber
  • section 9 made of a rigid material, e.g. aluminum
  • the drawing also shows that in Material section 11 a sensor 17, in particular a Light barrier 18 is provided with which the fill level in Intermediate container 6 is determined.
  • a sensor 17 In particular a Light barrier 18 is provided with which the fill level in Intermediate container 6 is determined.
  • a (not Actuator shown activated in the direction of the arrow 19 acts on a rocker 20 which is rotatable about an axis 21 is stored.
  • a closure member 22 of the Outflow opening 5 is lifted and powder can be removed from the Pour the powder container 1 into the intermediate container 6.
  • Within the frustoconical shell section 15 is the air permeated powder soothes and it becomes a uniform bulk density created. In this way the Discharge via the metering element 7 is evened out.
  • the level becomes permanent during operation kept at the same level so that the fill level in The intermediate container has no influence on the dosage.
  • the level of the powder container and the bulk density of the Powders in the powder container have no influence on the Dosing as the powder container is completely from the dosing process is uncoupled. Between the powder container and the The metering device is namely the intermediate container.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Disintegrating Or Milling (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Cyclones (AREA)
  • Coating Apparatus (AREA)

Claims (9)

  1. Dispositif de poudrage pour le poudrage de feuilles imprimées comportant un réservoir à poudre (1), dans lequel de la poudre est stockée et à partir duquel de la poudre est prélevée, et un organe de dosage (7) par l'intermédiaire duquel une certaine quantité de poudre est libérée dans un flux d'air, le réservoir à poudre (1) débouchant dans un réservoir intermédiaire (6) par l'intermédiaire d'une ouverture de sortie (5) et le réservoir intermédiaire (6) étant agencé entre le réservoir à poudre (1) et l'organe de dosage (7), le réservoir à poudre (1), le réservoir intermédiaire (6) et l'organe de dosage (7) étant agencés les uns derrière les autres dans la direction verticale et la poudre étant transmise d'un élément à l'autre vers le bas,
    caractérisé en ce que l'ouverture de sortie (5) peut être fermée par un organe de fermeture (22) fixé au réservoir à poudre (1) et en ce que l'organe de fermeture (22) peut être décollé du réservoir à poudre (1) vers le bas.
  2. Dispositif de poudrage selon la revendication 1,
    caractérisé en ce que le réservoir intermédiaire (6) est conçu essentiellement en forme d'entonnoir.
  3. Dispositif de poudrage selon l'une des revendications précédentes,
    caractérisé en ce que le réservoir intermédiaire (6) présente au moins par endroits une paroi élastique (13).
  4. Dispositif de poudrage selon la revendication 3,
    caractérisé en ce que la paroi élastique (13) se situe immédiatement avant l'organe de dosage (7).
  5. Dispositif de poudrage selon l'une des revendications précédentes,
    caractérisé en ce que le réservoir intermédiaire (6) présente un capteur (17) qui détecte le niveau de remplissage de la poudre.
  6. Dispositif de poudrage selon la revendication 5,
    caractérisé en ce que le capteur (17) est un capteur optique, notamment une barrière photo-électrique (18), un capteur inductif ou un capteur capacitif.
  7. Dispositif de poudrage selon l'une des revendications précédentes,
    caractérisé en ce que le réservoir intermédiaire (6) est conçu sous forme de système ouvert.
  8. Dispositif de poudrage selon l'une des revendications précédentes,
    caractérisé en ce que la pression ambiante règne dans le réservoir intermédiaire (6).
  9. Dispositif de poudrage selon l'une des revendications précédentes,
    caractérisé en ce que le réservoir à poudre (1) est conçu sous forme de réservoir interchangeable et qu'il peut être retiré du dispositif de poudrage.
EP99934606A 1998-08-10 1999-07-07 Dispositif de poudrage a apport de poudre constant Expired - Lifetime EP1115576B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19836021A DE19836021A1 (de) 1998-08-10 1998-08-10 Pudervorrichtung
DE19836021 1998-08-10
PCT/EP1999/004751 WO2000009335A1 (fr) 1998-08-10 1999-07-07 Dispositif de poudrage a apport de poudre constant

Publications (2)

Publication Number Publication Date
EP1115576A1 EP1115576A1 (fr) 2001-07-18
EP1115576B1 true EP1115576B1 (fr) 2003-02-12

Family

ID=7876968

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99934606A Expired - Lifetime EP1115576B1 (fr) 1998-08-10 1999-07-07 Dispositif de poudrage a apport de poudre constant

Country Status (5)

Country Link
US (1) US6299021B1 (fr)
EP (1) EP1115576B1 (fr)
JP (1) JP3627920B2 (fr)
DE (3) DE19836021A1 (fr)
WO (1) WO2000009335A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6571990B2 (en) * 2001-03-30 2003-06-03 Ctb Ip, Inc. Method and apparatus for adjustably directing granular material out of a container and reducing outlet pressure in the container
CA2685331C (fr) 2007-04-27 2016-07-05 Cydex Pharmaceuticals, Inc. Preparations contenant du clopidogrel et de la sulfoalkyl-ether cyclodextrine et methodes d'utilisation
CN105394025B (zh) * 2015-09-21 2018-08-21 江苏大学 一种无人机用可降解球体自动投放装置

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3091368A (en) * 1961-03-01 1963-05-28 Remington Arms Co Inc Powder measuring device
DE6605019U (de) * 1967-02-23 1970-03-26 Albin Platsch Geraet zum zerstaeuben von pulverfoermigen substanzen
DE1611317A1 (de) * 1967-07-22 1971-01-21 Polygraph Leipzig Puderdruckbestaeuber
US3604981A (en) 1969-12-19 1971-09-14 Nikka Kk Powder sprayer of high-tension discharge type
DE3811309C2 (de) * 1988-04-02 1997-09-04 Weitmann & Konrad Fa Vorrichtung zum Zerstäuben von Puder
DE3819203A1 (de) 1988-06-06 1989-12-07 Klaschka Ind Elektronik Bestaeubungsgeraet
JPH0647285B2 (ja) * 1988-09-14 1994-06-22 株式会社グラフィックアーツシステム 印刷機におけるインキ裏移り防止用パウダースプレー装置
US5213271A (en) * 1991-08-09 1993-05-25 Oxy-Dry Corporation Powder sprayer with pneumatic powder supply system
FR2683349B1 (fr) 1991-10-31 1996-10-04 France Telecom Reseau de resistances binaires et son utilisation pour l'etiquetage de composantes connexes d'images numerisees en vision artificielle.
US5178333A (en) * 1991-12-06 1993-01-12 Larry Barber Air distribution apparatus for particulates
CA2130362C (fr) * 1993-08-27 1998-11-03 Richard J. Duffy Pulverisateur a poudre pour le revetement d'articles de fixation
DE19736448B4 (de) 1997-08-21 2010-06-02 Mediprint Apparatebau Gmbh Vorrichtung und Verfahren zur Zufuhr von Puder

Also Published As

Publication number Publication date
DE29816739U1 (de) 1998-12-03
JP2002522276A (ja) 2002-07-23
US6299021B1 (en) 2001-10-09
DE59904291D1 (de) 2003-03-20
DE19836021A1 (de) 2000-03-09
JP3627920B2 (ja) 2005-03-09
EP1115576A1 (fr) 2001-07-18
WO2000009335A1 (fr) 2000-02-24

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