EP0427122A1 - Device for drying of sheets, or respectively of plane single parts - Google Patents

Device for drying of sheets, or respectively of plane single parts Download PDF

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Publication number
EP0427122A1
EP0427122A1 EP90120989A EP90120989A EP0427122A1 EP 0427122 A1 EP0427122 A1 EP 0427122A1 EP 90120989 A EP90120989 A EP 90120989A EP 90120989 A EP90120989 A EP 90120989A EP 0427122 A1 EP0427122 A1 EP 0427122A1
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EP
European Patent Office
Prior art keywords
dryer
conveyor belt
suction
air
assigned
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.)
Granted
Application number
EP90120989A
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German (de)
French (fr)
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EP0427122B1 (en
Inventor
Gerhard Klemm
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Gerhard Klemm Maschinenfabrik & Co Firma GmbH
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Gerhard Klemm Maschinenfabrik & Co Firma GmbH
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/001—Handling, e.g. loading or unloading arrangements
    • F26B25/003—Handling, e.g. loading or unloading arrangements for articles
    • F26B25/004—Handling, e.g. loading or unloading arrangements for articles in the shape of discrete sheets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
    • F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
    • F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
    • F26B15/18—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined the objects or batches of materials being carried by endless belts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat

Definitions

  • the invention relates to a device for drying sheets or sheet materials in a pass, at least one vacuum chamber is provided below the drying material guide level, which has a heatable top plate provided with passage cross-sections, over which an air-permeable conveyor belt is guided.
  • Such a device is known from DE-PS 26 07 504.
  • This device has proven itself well in practice and, in particular, is arranged behind printing machines in its work use, with which webs are screen-printed.
  • the increased awareness of the occupational safety concept on the one hand and the current working speeds of printing presses on the other hand result in new technical tasks.
  • the invention is therefore based on the object of significantly accelerating the drying process, in order to limit the evaporation of application chemicals to the area of the dryer and, in addition, not only to reduce its working speed, but also to increase it considerably. This should take health aspects into account and at the same time improve efficiency, apart from the smaller space requirement that is to be achieved.
  • the vacuum chamber (s) has at least one blowing air leading to the drying level, and at least in the area of the inlet slot of the conveyor belt into the dryer, below its running level, transverse to the running direction or one or more suction bars are arranged.
  • the freshly printed sheets reach the interior of the dryer in a positionally stable state by means of the conveyor belt, which preferably consists of heat-resistant material and which allows the suction flow to pass through due to its porosity.
  • the conveyor belt which preferably consists of heat-resistant material and which allows the suction flow to pass through due to its porosity.
  • the sheets are not only heated and dried by the top plate of the vacuum chamber (s), which provides the support and heat, but also freed of their chemical substances and vapors by the heated blowing flow of the hood.
  • the sheets, coming out of the dryer reach the suction bar in the discharge area by means of the conveyor belt, so that they are permanently held from the entry area to the discharge area.
  • the advantage is therefore that not only is the drying time considerably shortened, but it is also ensured that the workpieces, such as sensitive printed sheets, are not subjected to any warping which leads to rejects very easily.
  • the evaporating moisture of the printing ink causes the material to "work", which is almost always undesirable and which can otherwise only be avoided if it is dried very carefully over long distances.
  • the drying section is shortened considerably, with the best result.
  • Another advantage of the invention is that when z. B. Switch foils are printed on screen printing machines, the applied air works primarily and can largely support the diffusion forces from the color, whereby the heat coming from below promotes this, because the material itself allows the heat transfer, but not the suction flow, to prevent evaporation could, since it acts downwards. Since the material is absolutely fixed, a perfect result is guaranteed.
  • the dryer 1 is generally at the end of a production line and receives from a machine, preferably printed sheets from a printing machine or from a coating machine of any type. In particular, sheet printing of a screen printing machine is intended. It can also be flat other surface articles that are fed.
  • the dryer 1 has a feed table 10, a base frame 11 and, at its discharge end, a storage chute 12.
  • the actual dryer area is closed by means of a hood 13, which is intended to achieve an enclosed space in the work area. At the same time, this hood provides the space for the air supply by means of blowing nozzles 14, which are located in the direction of the goods carrying level of the conveyed conveyor belt 2.
  • the upper run of the conveyor belt 2 closes off the base frame of the dryer 1 in the region of vacuum chambers or boxes 3 located at the front, which upwards, assigned to the conveyor belt 2, have air passage cross sections 31 in their heatable top plate 32.
  • the upper run of the conveyor belt 2 runs directly in front of the inlet area into the shot housing of the dryer via a preferably rectangular or square suction bar 4, the surface of which gives the suction pressure is directly assigned to the run. Since the conveyor belt 2 made of heat-resistant, porous, for example woven or knitted, respectively. there is perforated material, already in front of and in the entrance area the suction pressure applied to the sheet 7 to be dried and holds it immovably on the conveyor belt 2.
  • This suction bar 4 is located close to the entrance slot, but in the feed table 10, and in turn corresponds to the suction bar 5, which is located directly below the outlet area of the conveyor belt 2, behind the dryer, in front of the storage chute 12. It is also important at the outlet that the sheet or sheets 7 or workpieces to be dried are held as glued to the conveyor belt.
  • the surface of the suction bar and the lower surface of the conveyor belt each lie practically on one level and the sheet 7, which is carried along by the conveyor belt, is fixed thereon.
  • the workpieces 7 enter the dryer calmly, in which they are heated on the one hand by heat from the heated top plate 30 of the vacuum box (s) 3 and dry from below and on the other hand dry from above by means of the warm air by the rising vapors and so that the moisture is also blown off. They run out of the dryer, practically without their own movement. All of this happens when the sheet 7 is in a flat position by permanently holding it up to and beyond the starting area.
  • the sheet 7 is thus held firmly on the conveyor belt until its end limit has passed this area.
  • the sheet 7 is then released and slides into the storage chute 12.
  • the conveyor belt 2 can be driven continuously, but better discontinuously, for example via a known sectionally operating roller, possibly a suction roller 6, as is used in printing machines.
  • the conveyor belt is guided over deflection rollers 20, 21, 22, 23 in the feed area and 24, 25, 26 in the storage area and can therefore regenerate or unload until it runs into the dryer again and picks up a new sheet.
  • the dryer 1, with its hood 13, is shown open in a side view.
  • the hood 13 is divided into two.
  • the rear part 13a receives the air from below from the base frame 11, which is held by supports 11a.
  • the front part has an air supply space 13b, in which there are heating coils 17 which heat the air before it enters the many downward blowing nozzles 14 in order to blow off the sheets 7 and at the same time press them firmly onto the conveyor belt 2.
  • Arrow direction A shows the inflow opening into the air supply space 13b.
  • Arrow direction B indicates the possibility that the air flow can come back, which comes out of the nozzles 14 and is excess.
  • the openings 13c and 13d lie one above the other in the intermediate wall.
  • the nozzles 14 are vorzw over the entire area in the interior of the dryer. equally distributed.
  • the cover 13 also has an exhaust port 15 which can be opened or closed more or less by a flap 15a.
  • the lower part of the dryer 1, which can also be referred to as the base frame 11, carries on its supports 111 a double chamber, consisting of a channel part 11a and a vacuum chamber 3, or, in the case of longer lengths, a plurality of vacuum chambers 3. These chambers have in their upper region heated top plates 30, which are provided with air passage cross sections 31. The air-permeable conveyor belt 2 is guided over these heated top plates, which, as described at the beginning, the workpieces. Sheet, especially printed sheet 7 takes.
  • the suction pressure is generated in the vacuum chamber 3 by a suction blower 8, which sucks the air out of the vacuum chamber (s) 3, thereby holding the elbows 7 in place and supplying the blowing nozzles 14 via the exhaust air.
  • a suction blower 8 draws air from the vacuum area through its central socket and gives the blower air into a space 9 under the lower rear chamber 11a via its exhaust air socket 80, these two parts being connected to one another by one or more openings 11c.
  • the chambers 11a and 13a lie one above the other and form a closed unit in operation, especially since the wall with the openings 11c could be missing.
  • the room 9 has an inclined rear wall 19, which serves as a guide surface to the upper part
  • a significant advantage of the subject of the invention is also seen in the fact that the closed circuit of the air inside the device means that the surroundings remain practically unloaded.
  • the suction and transport roller 6 shows the suction and transport roller 6 somewhat more clearly, with the suction bar 5 arranged in front on average.
  • the conveyor belt 2 is pulled over it. Since the suction beam is rectangular in cross section, the conveyor belt lies flat, so that the suction pressure can be passed on to the material to be dried via the conveyor belt 2.
  • the suction bar extends over the entire working width and thus has its suction passage cross sections 5 'in the support area over the entire working width.
  • the suction and transport roller 6 works, as is common in screen printing, discontinuously. However, it can also be switched to continuous operation.
  • the suction and transport roller 6 and the suction bars 4, 5 are connected to the suction fan 8.

Abstract

The invention relates to a device for drying sheets or plane materials continuously, there being provided under a guide plane for products to be dried at least one vacuum chamber with a heated upper plate, which is assigned a cover hood (13) with blowing nozzles (14), and, upstream and downstream of the dryer, one or more suction beams (4, 5), lying transversely to the direction of travel, are assigned to the travel plane of the products. <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung zum Trocknen von Bogen, bzw. von flächigen Materialien im Durch­lauf, wobei unterhalb der Trocknungsgutführungsebene mindestens eine Vacuumkammer vorgesehen ist, die eine mit Durchtrittsquerschnitten versehene, aufheizbare Oberplatte aufweist, über die ein luftdurchlässiges Förderband geführt ist.The invention relates to a device for drying sheets or sheet materials in a pass, at least one vacuum chamber is provided below the drying material guide level, which has a heatable top plate provided with passage cross-sections, over which an air-permeable conveyor belt is guided.

Eine derartige Vorrichtung ist durch die DE-PS 26 07 504 bekannt. Diese Vorrichtung hat sich in der Praxis gut bewährt und wird in ihrem Arbeitseinsatz insbes. hinter Druckmaschinen angeordnet, mit denen Bahnen im Siebdruck bedruckt werden. Durch die erhöhte Sensibilisierung des Arbeitsschutzgedankens einerseits und durch die heutigen Arbeitsgeschwindigkeiten von Druckmaschinen andererseits, ergeben sich neue technische Aufgaben.Such a device is known from DE-PS 26 07 504. This device has proven itself well in practice and, in particular, is arranged behind printing machines in its work use, with which webs are screen-printed. The increased awareness of the occupational safety concept on the one hand and the current working speeds of printing presses on the other hand result in new technical tasks.

Der Erfindung liegt somit die Aufgabe zugrunde, den Trocknungsvorgang erheblich zu beschleunigen, um die Abdunstung von Auftragschemikalien auf den Bereich des Trockners zu begrenzen und außerdem seine Arbeits­geschwindigkeit nicht nur zu lassen, sondern noch erheblich zu steigern. Dadurch sollen gesundheitliche Aspekte berücksichtigt und gleichzeitig auch die Wirtschaftlichkeit verbessert werden, abgesehen von einem geringeren Raumbedarf, der erzielt werden soll.The invention is therefore based on the object of significantly accelerating the drying process, in order to limit the evaporation of application chemicals to the area of the dryer and, in addition, not only to reduce its working speed, but also to increase it considerably. This should take health aspects into account and at the same time improve efficiency, apart from the smaller space requirement that is to be achieved.

Diese Aufgabe wird durch die Erfindung dadurch gelöst, daß die Vacuumkammer(n) mindestens eine, Blasluft zur Trocknungsebene führende Abdeckhaube aufweist, und mindestens im Bereich des Einlaufschlitzes des Förderbandes in den Trockner, unterhalb seiner Laufebene, quer zur Laufrichtung liegend ein oder mehrere Saugbalken od. dgl. angeordnet sind.This object is achieved by the invention in that the vacuum chamber (s) has at least one blowing air leading to the drying level, and at least in the area of the inlet slot of the conveyor belt into the dryer, below its running level, transverse to the running direction or one or more suction bars are arranged.

Somit ist erreicht, daß die frisch bedruckten Bogen mittels des vorzugsweise aus wärmeresistentem Material bestehenden Förderbandes, das durch seine Porosität den Saugstrom durchläßt, in einem lagestabilen Zustand in den Innenbereich des Trockners gelangen. Dort werden nicht sie nicht nur von der die Auflage und Wärme gebenden Oberplatte der Vacuumkammer(n) beheizt und getrocknet, sondern auch vom erwärmten Blasstrom der Haube von ihren chemischen Substanzen und Ausdünstungen befreit.
Anschließend gelangen die Bogen, aus dem Trockner herauslaufend, mittels des Fürderbandes über den im Auslaufbereich liegenden Saugbalken, sodaß sie vom Einlaufbereich bis in den Auslafbereich permanent festgehalten werden.It is thus achieved that the freshly printed sheets reach the interior of the dryer in a positionally stable state by means of the conveyor belt, which preferably consists of heat-resistant material and which allows the suction flow to pass through due to its porosity. There they are not only heated and dried by the top plate of the vacuum chamber (s), which provides the support and heat, but also freed of their chemical substances and vapors by the heated blowing flow of the hood.
Subsequently, the sheets, coming out of the dryer, reach the suction bar in the discharge area by means of the conveyor belt, so that they are permanently held from the entry area to the discharge area.

Der Vorteil besteht somit darin, daß nicht nur die Trocknungszeit erheblich verkürzt wird, sondern gewährleistet ist, daß die Werkstücke, wie z.B. empfindliche bedruckte Bogen, keinerlei Verwerfungen ausgesetzt sind, die sehr leicht zu Ausschuß führen. Die verdunstende Feuchtigkeit der Druckfarbe erzielt ein "arbeiten" des Materials, das fast immer unerwünscht ist und das sonst nur vermieden werden kann, wenn sehr vorsichtig über lange Strecken getrocknet wird. Mittels der Erfindung ist die Trocknungsstrecke erheblich abgekürzt, mit bestem Ergebnis.The advantage is therefore that not only is the drying time considerably shortened, but it is also ensured that the workpieces, such as sensitive printed sheets, are not subjected to any warping which leads to rejects very easily. The evaporating moisture of the printing ink causes the material to "work", which is almost always undesirable and which can otherwise only be avoided if it is dried very carefully over long distances. By means of the invention, the drying section is shortened considerably, with the best result.

Ein weiterer Vorteil der Erfindung besteht darin, daß wenn z. B. Schalterfolien auf Siebdruckmaschinen gedruckt werden, die aufgebrachte Luft primÄr arbeitet und die Diffusionskräfte aus der Farbe weitgehend unterstützen kann, wobei die von unten zukommende Wärme dies fördert, denn das Material selbst läßt den Wärmeübergang, aber nicht den Saugstrom durch, der die Abdunstung verhindern könnte,da er nach unten wirkt. Da das Material absolut festliegt, ist die Gewähr eines einwandfreien Ergebnisses gegeben.Another advantage of the invention is that when z. B. Switch foils are printed on screen printing machines, the applied air works primarily and can largely support the diffusion forces from the color, whereby the heat coming from below promotes this, because the material itself allows the heat transfer, but not the suction flow, to prevent evaporation could, since it acts downwards. Since the material is absolutely fixed, a perfect result is guaranteed.

Die Kombination von drei verschiedenen Merkmalen ist somit wichtig um ein optimales Trocknungs­ergebnis auf so kurzer Strecke zu erhalten:

  • 1.) Das Aufblasen erwärmter Luft auf die Auftrags­flächen zur Verhinderung einer zu großen Sättigung über den Auftragsschichten und zur Erreichung bezw. Überwindung der entstehenden Grenzschichten, bzw. überhaupt zur Trocknung.
  • 2.) Die Unterstützung des Prozesses durch Zuführung von Kontaktwärme von unten, die durch das Material hindurch wirkt und das Abdampfen ermöglicht.
  • 3.)Durch das zusätzliche Festhalten der Bogen vor und hinter dem Umluft- und damit dem Turbulenzbereich, ist die Gewähr eines einwandfreien Ergebnisses, bei kürzester Zeit und damit geringem Platzbedarf, gegeben, Die Bogen bleiben einwandfrei glatt.
The combination of three different features is therefore important in order to obtain an optimal drying result over such a short distance:
  • 1.) Inflating heated air on the application areas to prevent excessive saturation over the application layers and to achieve or. Overcoming the emerging boundary layers, or for drying at all.
  • 2.) Supporting the process by supplying contact heat from below, which acts through the material and enables evaporation.
  • 3.) By additionally holding the elbows in front of and behind the circulating air and thus the turbulence area, there is a guarantee of a flawless result, with the shortest possible time and thus taking up little space. The elbows remain perfectly smooth.

Diese drei Merkmale sind bei dem Erfindungsgegenstand optimal erfüllt, wobei bei Einsatz der Erfindung die sonst üblichen Schwierigkeiten bei der Trocknung von Bögen, nicht mehr auftreten können, wie z.B. "flattern","sich ausbeulen","verlaufen", "ungleich auftrocknen", "Konturenunschärfe", od.dgl.These three features are optimally fulfilled in the subject matter of the invention, whereby when using the invention the usual difficulties in drying sheets can no longer occur, such as "flutter", "bulge", "run", "unevenly dry", "Contour blur," or the like.

In den Zeichnungen ist ein Ausführungsbeispiel der Erfindung dargestellt. Es zeigen:

  • Fig.1 den Trockner in Seitenansicht
  • Fig.2 den Trockner in Draufsicht
  • Fig.3 einen Schnitt durch den Trockner nach der Linie III - III der Fig.2
  • Fig.4 eine Einzelheit.
In the drawings, an embodiment of the invention is shown. Show it:
  • Fig.1 the dryer in side view
  • Fig.2 the dryer in plan view
  • 3 shows a section through the dryer along the line III - III of Fig.2
  • Fig.4 a detail.

Der Trockner 1 steht im allgemeinen am Ende einer Produktionsstraße und erhält von einer Maschine, vorzugsweise bedruckte Bogen aus einer Druckmaschine oder aus einer Beschichtungsmaschine beliebiger Art. Insbesondere ist an Bogendruck einer Siebdruckmaschine gedacht. Es können auch ebene andere Flächenartikel sein, die zugeführt werden.
Der Trockner 1 weist einen Aufgabetich 10 auf, ein Grundgestell 11 und an seinem Abgabeende, eine Ablage­rutsche 12. Der eigentliche Trocknerbereich wird mittels einer Haube 13 geschlossen, die der Erzielung eines umschlossenen Raumes im Arbeitsbereich dienen soll. Diese Haube gibt gleichzeitig den Raum für die Luftzuführung mittels Blasdüsen 14, die in Richtung auf die Warendurchführungsebene des umgeführten Förderbandes 2 liegen.
Das obere Trum des Förderbandes 2 schließt das Grund­gestell des Trockners 1 im Bereich von vorn liegenden Vacuumkammern oder -kästen 3 ab, die nach oben hin, dem Förderband 2 zugeordnet, Luftdurchtrittsquer­schnitte 31 in ihrer erwärmbaren Oberplatte 32 auf­weisen.
Das obere Trum des Förderbandes 2 läuft unmittelbar vor dem Einlaufbereich in das geschossene Gehäuse des Trockners über einen, vorzugsweise rechteckigen oder quadratischen Saugbalken 4, dessen den Saugdruck ge­bende Oberfläche unmittelbar dem Trum zugeordnet ist.
Da das Förderband 2 aus wärmeresistentem, porösem, z.B. gewebtem oder gewirktem, bezw. durchlöchtem Material besteht, erfaßt schon vor und in dem Eingangsbereich der aufgebrachte Saugdruck den zu trocknenden Bogen 7 und hält ihn am Förderband 2 unverrückbar fest.
Dieser Saugbalken 4 liegt dicht am Eingangsschlitz,aber im Aufgabetisch 10, und entspricht seinerseits dem Saugbalken 5, der unmittelbar unter dem Auslaufbereich des Förderbandes 2,hinter dem Trockner, vor der Ablage­rutsche 12 liegt. Auch am Auslauf kommt es darauf an, daß der bzw. die zu trocknenden Bogen 7 oder Werk­stücke am Förderband wie festgeklebt gehalten werden. Oberfläche Saugbalken und Unterfläche Förder­band liegen jeweils praktisch auf einer Ebene und darauf fest der Bogen 7, der über das Förderband mitgenommen wird.
Somit ist erzielt, daß die Werkstücke 7 beruhigt in den Trockner einlaufen, in diesem einerseits durch Wärme aus der beheizten Oberplatte 30 des oder der Vacuumkästen 3 aufgeheizt werden und von unten her trocknen und andererseits von oben mittels der Warmluft abtrocknen, indem die aufsteigenden Dämpfe und damit auch die Feuchtigkeit abgeblasen wird. Sie laufen aus dem Trockner aus, praktisch ohne Eigenbewegung.
Das alles geschieht bei planer Lage der Bogen 7 durch permanentes Festhalten derselben, bis in den Ausgangs­bereich und über diesen hinaus.The dryer 1 is generally at the end of a production line and receives from a machine, preferably printed sheets from a printing machine or from a coating machine of any type. In particular, sheet printing of a screen printing machine is intended. It can also be flat other surface articles that are fed.
The dryer 1 has a feed table 10, a base frame 11 and, at its discharge end, a storage chute 12. The actual dryer area is closed by means of a hood 13, which is intended to achieve an enclosed space in the work area. At the same time, this hood provides the space for the air supply by means of blowing nozzles 14, which are located in the direction of the goods carrying level of the conveyed conveyor belt 2.
The upper run of the conveyor belt 2 closes off the base frame of the dryer 1 in the region of vacuum chambers or boxes 3 located at the front, which upwards, assigned to the conveyor belt 2, have air passage cross sections 31 in their heatable top plate 32.
The upper run of the conveyor belt 2 runs directly in front of the inlet area into the shot housing of the dryer via a preferably rectangular or square suction bar 4, the surface of which gives the suction pressure is directly assigned to the run.
Since the conveyor belt 2 made of heat-resistant, porous, for example woven or knitted, respectively. there is perforated material, already in front of and in the entrance area the suction pressure applied to the sheet 7 to be dried and holds it immovably on the conveyor belt 2.
This suction bar 4 is located close to the entrance slot, but in the feed table 10, and in turn corresponds to the suction bar 5, which is located directly below the outlet area of the conveyor belt 2, behind the dryer, in front of the storage chute 12. It is also important at the outlet that the sheet or sheets 7 or workpieces to be dried are held as glued to the conveyor belt. The surface of the suction bar and the lower surface of the conveyor belt each lie practically on one level and the sheet 7, which is carried along by the conveyor belt, is fixed thereon.
It is thus achieved that the workpieces 7 enter the dryer calmly, in which they are heated on the one hand by heat from the heated top plate 30 of the vacuum box (s) 3 and dry from below and on the other hand dry from above by means of the warm air by the rising vapors and so that the moisture is also blown off. They run out of the dryer, practically without their own movement.
All of this happens when the sheet 7 is in a flat position by permanently holding it up to and beyond the starting area.

Im Bereich des Ausgangsschlitzes, diesem nachgeordnet, wird der Bogen 7 somit fest auf dem Förderband gehalten bis seine Endbegrenzung diesen Bereich passiert hat. Anschließend wird der Bogen 7 freigegeben und gleitet in die Ablagerutsche 12.
Das Förderband 2 kann kontinuierlich, besser aber diskontinuierlich angetrieben werden, z.B. über eine bekannte abschnittsweise arbeitende Walze, evtl. eine Saugwalze 6, wie sie bei Druckmaschinen eingesetzt wird.
Das Förderband wird über Umlenkrollen 20,21,22,23 im Aufgabebereich und 24,25,26 im Ablagebereich geführt und kann sich somit regenerieren, bzw. entladen, bis es in den Trockner wieder einläuft, und einen neuen Bogen aufnimmt.In the area of the exit slot, downstream of this, the sheet 7 is thus held firmly on the conveyor belt until its end limit has passed this area. The sheet 7 is then released and slides into the storage chute 12.
The conveyor belt 2 can be driven continuously, but better discontinuously, for example via a known sectionally operating roller, possibly a suction roller 6, as is used in printing machines.
The conveyor belt is guided over deflection rollers 20, 21, 22, 23 in the feed area and 24, 25, 26 in the storage area and can therefore regenerate or unload until it runs into the dryer again and picks up a new sheet.

In den Figuren 3 und 4 sind die Einzelheiten besser erkennbar.
Der Trockner 1, mit seiner Haube 13, ist geöffnet in Seitenansicht dargestellt. Die Haube 13 ist zweigeteilt. Der hintere Teil 13a empfängt die Luft von unten aus dem Grundgestell 11, das von Stützen 11a gehalten wird. Der vordere Teil weist einen Luftzuführungsraum 13b auf, in dem Heizschlangen 17 liegen, die die Luft er­wärmen, ehe sie in die vielen nach unten gerichteten Blasdüsen 14 gelangt, um die Bogen 7 abzublasen und gleichzeitig fest auf das Förderband 2 zu drücken.The details can be seen better in FIGS. 3 and 4.
The dryer 1, with its hood 13, is shown open in a side view. The hood 13 is divided into two. The rear part 13a receives the air from below from the base frame 11, which is held by supports 11a. The front part has an air supply space 13b, in which there are heating coils 17 which heat the air before it enters the many downward blowing nozzles 14 in order to blow off the sheets 7 and at the same time press them firmly onto the conveyor belt 2.

Pfeilrichtung A zeigt die Einströmöffnung in den Luftzuführungsraum 13b. Pfeilrichtung B zeigt die Möglichkeit an, daß der Luftstrom zurück­fließen kann, der aus den Düsen 14 kommt und über­schüssig ist. Die Öffnungen 13c und 13d liegen übereinander in der Zwischenwand. Die Düsen 14 sind über die ganze Fläche im Innenraum des Trockners vorzw. gleichmäßig verteilt.Arrow direction A shows the inflow opening into the air supply space 13b. Arrow direction B indicates the possibility that the air flow can come back, which comes out of the nozzles 14 and is excess. The openings 13c and 13d lie one above the other in the intermediate wall. The nozzles 14 are vorzw over the entire area in the interior of the dryer. equally distributed.

Die Abdeckhaube 13 weist ferner einem Abluftstutzen 15 auf, der durch eine Klappe 15a mehr oder weniger geöffnet oder geschlossen werden kann.
Das Unterteil des Trockners 1, das auch als Grundgestell 11 bezeichnet werden kann, trägt auf seinen Stützen 111 eine Doppelkammer, bestehend aus einem Kanalteil 11a und einer Vacuumkammer 3, bzw. bei größeren Längen, mehreren Vacuumkammern 3. Diese Kammern weisen in ihrem oberen Bereich beheizte Oberplatten 30 auf, die mit Luftdurchtrittsquer­schnitten 31 versehen sind. Über diese beheizten Ober­platten wird das luftdurchlässige Förderband 2 geführt, das, wie eingangs beschrieben, die Werkstücke, vorzw. Bogen, insbes. bedruckte Bogen 7 mitnimmt.The cover 13 also has an exhaust port 15 which can be opened or closed more or less by a flap 15a.
The lower part of the dryer 1, which can also be referred to as the base frame 11, carries on its supports 111 a double chamber, consisting of a channel part 11a and a vacuum chamber 3, or, in the case of longer lengths, a plurality of vacuum chambers 3. These chambers have in their upper region heated top plates 30, which are provided with air passage cross sections 31. The air-permeable conveyor belt 2 is guided over these heated top plates, which, as described at the beginning, the workpieces. Sheet, especially printed sheet 7 takes.

Der Saugdruck wird in der Vacuumkammer 3 durch ein Sauggebläse 8 erzeugt, das die Luft aus der oder den Vacuumkammern 3 absaugt, dadurch die Bogen 7 festhält und über die Abluft die Blasdüsen 14 versorgt. In den Vacuumkammern oder -kästen 3 liegen Heizelemente 32, die die Oberplatte(n) 30 mit Wärme versorgen.
Der Umlauf der Luft ist somit gewährleistet, wodurch auch erhebliche Energien gespart werden.
Das Sauggebläse 8 saugt durch seinen Mittelstutzen Luft aus dem Vacuumbereich an und gibt über seinen Abluftstutzen 80 die Gebläseluft in einen Raum 9 unter der unteren hinteren Kammer 11a, wobei diese beiden Teile durch ein oder mehrere Öffnungen 11c miteinander verbunden sind. Die Kammern 11a und 13a liegen übereinander und bilden eine geschlossene Einheit im Betrieb, zumal die Wand mit den Öffnungen 11c fehlen könnte. Der Raum 9 hat eine schrägliegende Rückwand 19, die als Leitfläche zum oberen Teil dientThe suction pressure is generated in the vacuum chamber 3 by a suction blower 8, which sucks the air out of the vacuum chamber (s) 3, thereby holding the elbows 7 in place and supplying the blowing nozzles 14 via the exhaust air. In the vacuum chambers or boxes 3 there are heating elements 32 which supply the top plate (s) 30 with heat.
The circulation of the air is thus guaranteed, which also saves considerable energy.
The suction blower 8 draws air from the vacuum area through its central socket and gives the blower air into a space 9 under the lower rear chamber 11a via its exhaust air socket 80, these two parts being connected to one another by one or more openings 11c. The chambers 11a and 13a lie one above the other and form a closed unit in operation, especially since the wall with the openings 11c could be missing. The room 9 has an inclined rear wall 19, which serves as a guide surface to the upper part

Ein wesentlicher Vorteil des Erfindungsgegenstandes wird auch darin gesehen, daß durch den geschlossenen Kreislauf der Luft innerhalb der Vorrichtung das Umfeld praktisch unbelastet bleibt.A significant advantage of the subject of the invention is also seen in the fact that the closed circuit of the air inside the device means that the surroundings remain practically unloaded.

In der Fig 4 ist etwas deutlicher die Saug- und Trans­portwalze 6 dargestellt, mit dem davor angeordneten Saugbalken 5 im Schnitt. Darüber gezogen ist das Förderband 2. Da der Saugbalken im Querschnitt recht­eckig ausgebildet ist liegt das Förderband flächig auf, so daß der Saugdruck über das Förderband 2 zum zu trocknenden Material weitergegeben werden kann. Der Saugbalken geht über die ganze Arbeitsbreite und hat somit auf der ganzen Arbeitsbreite seine Saugdurchtrittsquerschnitte 5` im Auflagebereich. Die Saug- und Transportwalze 6 arbeitet, wie im Siebdruck allgemein üblich, diskontinuierlich. Sie kann aber auch auf kontinuierlichen Betrieb umgeschaltet werden.
Die Saug- und Transportwalze 6 und die Saugbalken 4,5 sind an das Sauggebläse 8 angeschlossen.4 shows the suction and transport roller 6 somewhat more clearly, with the suction bar 5 arranged in front on average. The conveyor belt 2 is pulled over it. Since the suction beam is rectangular in cross section, the conveyor belt lies flat, so that the suction pressure can be passed on to the material to be dried via the conveyor belt 2. The suction bar extends over the entire working width and thus has its suction passage cross sections 5 'in the support area over the entire working width. The suction and transport roller 6 works, as is common in screen printing, discontinuously. However, it can also be switched to continuous operation.
The suction and transport roller 6 and the suction bars 4, 5 are connected to the suction fan 8.

Wie schon aus dem vorher Gesagten hervorgeht, ist der Gedanke der Erfindung variierbar. So können mehrere Vacuumkästen hintereinander oder nebeneinander angeord­net sein, genauso wie mehrere Saugbalken 4 oder5 im Ein- oder Auslauf liegen können, und zwar neben­einander und hintereinander. Sie müssen nicht einen rechteckigen oder quadratischen Querschnitt haben, wenn auch diese Formgebung die flächige Auflage des Förderbandes und damit des zu trocknenden Materials gewährleistet.As can be seen from what has been said above, the idea of the invention can be varied. Thus, several vacuum boxes can be arranged one behind the other or next to one another, just as several suction bars 4 or 5 can lie in the inlet or outlet, namely side by side and one behind the other. You do not have to have a rectangular or square cross section, even if this shape ensures the flat support of the conveyor belt and thus the material to be dried.

Die offenbarten Merkmale, einzeln und in Kombination werden als erfindungswesentlich angesehen.The disclosed features, individually and in combination, are considered essential to the invention.

BezugszeichenlisteReference symbol list

  • 1 Trockner1 dryer
  • 10 Aufgabetisch10 feed table
  • 11 Grundgestell11 base frame
  • 11a Kanalteil, untere hintere Kammer11a channel part, lower rear chamber
  • 111 Stützen111 supports
  • 12 Ablagerutsche12 storage chute
  • 13 Haube, Abdeckhaube13 hood, cover hood
  • 13a hinterer Teil13a rear part
  • 13b Luftzuführungsraum13b air supply space
  • 13c Öffnungen13c openings
  • 13d Öffnungen13d openings
  • 2 Förderband2 conveyor belt
  • 20-23 Umlenkrollen im Aufgabebereich20-23 pulleys in the feed area
  • 24-26 Umlenkrollen im Ablagebereich24-26 pulleys in the storage area
  • 3 Vacuumkammern3 vacuum chambers
  • 30 Oberplatte30 top plate
  • 31 Luftdurchtrittsquerschnitte31 air passage cross sections
  • 32 Heizelemente32 heating elements
  • 4 Saugbalken4 suction bars
  • 5 Saugbalken5 suction bars
  • 5′Durchchtrittsquerschnitte5′through cross-sections
  • 6 Saugwalze, Transportwalze6 suction roller, transport roller
  • 7 Material, Bogen7 material, bow
  • 8 Sauggebläse8 suction fans
  • 9 Raum9 room
  • 19 schrägliegende Rückwand.19 sloping rear wall.
  • 14 Blasdüsen14 blow nozzles
  • 15 Abluftstutzen15 exhaust port
  • 16 Steuerpult16 control panel
  • 17 Heizschlangen17 heating coils

Claims (8)

1. Vorrichtung zum Trocknen von Bogen, bezw. von flächigen Materialien im Durchlauf, wobei unter­halb der Trocknungsgutführungsebene mindestens eine Vacuumkammer vorgesehen ist, die eine mit Durchtrittsquerschnitten versehene, vorzw. auf­heizbare Oberplatte aufweist, über die ein luft­durchlässiges Förderband geführt ist,
dadurch gekennzeichnet, daß die Vacuumkammer(n) (3) durch mindestens eine, Blasluft zur Trocknungsebene führende Abdeckhaube (13) schließbar ist und mindestens im Bereich des Ein­laufschlitzes des Förderbandes (2) in den Trockner, unterhalb seiner Laufebene,quer zur Laufrichtung liegend, ein oder mehrere Saugbalken (4) angeord­net sind.1. Device for drying sheets, respectively. of flat materials in the pass, with at least one vacuum chamber being provided below the drying material guide level, which has a provided with passage cross-sections. has heatable top plate over which an air-permeable conveyor belt is guided,
characterized in that the vacuum chamber (s) (3) can be closed by at least one covering hood (13) leading to the drying level and at least in the area of the inlet slot of the conveyor belt (2) into the dryer, below its running level, transverse to the running direction, one or more suction bars (4) are arranged. 2.) Vorrichtung nach Anspruch 1, dadurch gekenn­zeichnet, daß sowohl im Eingangsbereich des Trockners (1) als auch im Ausgangsbereich desselben, jeweil direkt vor- oder nachgeordnet,ein oder mehrere Saugbalken (4,5) dem Trockner bzw. seinem Förderband (2) zugeordnet sind2.) Device according to claim 1, characterized in that both in the input area of the dryer (1) and in the output area of the same, each directly upstream or downstream, one or more suction bars (4,5) the dryer or its conveyor belt (2nd ) assigned 3.) Vorrichtung nach einem der Ansprüche 1-2, dadurch gekennzeichnet, daß der Trockner (1) aus einem Grundgestell (11) und einer Haube (13) besteht, die auf die Transportfläche ausge­richtete Blasdüsen (14) trägt und im Grundge­stell (11) mindestens ein Vacuumkasten (3) vor­gesehen ist, mit beheizter Oberplatte (30) über die das Förderband (2) geführt ist.3.) Device according to one of claims 1-2, characterized in that the dryer (1) consists of a base frame (11) and a hood (13) which supports blowing nozzles (14) aligned with the transport surface and in the base frame (11 ) at least one vacuum box (3) is provided, with a heated top plate (30) over which the conveyor belt (2) is guided. 4.) Vorrichtung nach einem oder mehreren der Ansprüche 1-3, dadurch gekennzeichnet, daß den oder dem Vacuumkästen (3) ein Sauggebläse (8) zugeordnet ist, dessen Abluft im Umwälzverfahren über einen Blasstutzen (80) und Luftführungskammern (11a,13a) zu Blasdüsen (14) in der Haube (13) des Trockners (1) geführt ist.4.) Device according to one or more of claims 1-3, characterized in that the or the vacuum boxes (3) is assigned a suction fan (8), the exhaust air in the circulation process via a blow nozzle (80) and air guide chambers (11a, 13a) to blow nozzles (14) in the hood (13) of the dryer (1). 5.) Vorrichtung nach einem oder mehreren der Ansprüche 1-4, dadurch gekennzeichnet, daß sowohl dem oder den Vacuumkästen (3) und auch den Luftzu­führungsräumen Heizelemente (32,17) zugeordnet sind.5.) Device according to one or more of claims 1-4, characterized in that both the one or more vacuum boxes (3) and the air supply spaces are assigned heating elements (32, 17). 6.) Vorrichtung nach einem oder mehreren der Ansprüche 1-5, dadurch gekennzeichnet, daß die Saugbalken (4,5) an das Sauggebläse (8) angeschlossen sind.6.) Device according to one or more of claims 1-5, characterized in that the suction bars (4,5) are connected to the suction fan (8). 7.) Vorrichtung nach einem odere mehreren der Ansprüche 1-6, dadurch gekennzeichnet, daß sowohl die Haube (13) des Trockners (1), als auch sein Grundgestell (11) zweigeteilt ausgebildet sind, wobei im vorderen Bereich der Warendurchlauf und der Durchlauf des Förderbandes(2)und im hinteren Bereich die Luftzuführung liegt,wobei diese Teilbereiche miteinander verbunden sind.7.) Device according to one or more of claims 1-6, characterized in that both the hood (13) of the dryer (1) and its base frame (11) are formed in two parts, with the goods pass and the pass in the front region of the conveyor belt (2) and the air supply is in the rear area, these partial areas being connected to one another. 8.) Vorrichtung nach einem oder mehreren der Ansprüche 1-7, dadurch gekennzeichnet, daß der Trockner einen Aufgabetisch (10) und eine Ablagerutsche (12) aufweist und in den Be­reichen zwischen Trockner (1) und Ablagerutsche, und Aufgabetisch, jeweils mindestens ein, vorzw. quadratischer Saugbalken angeordnet ist, der dem luftdurchlässigen Förderband zugeordnet ist.8.) Device according to one or more of claims 1-7, characterized in that the dryer has a feed table (10) and a storage slide (12) and in the areas between the dryer (1) and storage slide, and feed table, at least one , currently square suction bar is arranged, which is assigned to the air-permeable conveyor belt.
EP90120989A 1989-11-06 1990-11-02 Device for drying of sheets, or respectively of plane single parts Expired - Lifetime EP0427122B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3936958A DE3936958A1 (en) 1989-11-06 1989-11-06 DEVICE FOR DRYING BOWS OR LARGE ITEMS
DE3936958 1989-11-06

Publications (2)

Publication Number Publication Date
EP0427122A1 true EP0427122A1 (en) 1991-05-15
EP0427122B1 EP0427122B1 (en) 1993-02-10

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ID=6392988

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90120989A Expired - Lifetime EP0427122B1 (en) 1989-11-06 1990-11-02 Device for drying of sheets, or respectively of plane single parts

Country Status (3)

Country Link
US (1) US5154010A (en)
EP (1) EP0427122B1 (en)
DE (2) DE3936958A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993019337A2 (en) * 1992-03-19 1993-09-30 Reinhart Schmidt Gmbh System for drying products on a moving conveyor belt, in particular the gum strips on envelopes
CN107367141A (en) * 2017-08-01 2017-11-21 安徽华众焊业有限公司 A kind of welding rod medicinal powder baking oven device

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4239264A1 (en) * 1992-11-21 1994-05-26 Ltg Lufttechnische Gmbh Workpiece treatment with gas stream - is used esp. for hot gas drying of lacquered cans, using pressure drop to stabilise cans on moving support
DE4442557B4 (en) * 1994-11-30 2005-12-22 Heidelberger Druckmaschinen Ag Boom of a sheetfed press
DE29507173U1 (en) * 1995-05-03 1995-07-27 Roland Man Druckmasch Dryer in the delivery of a sheet-fed rotary printing press
US6041515A (en) * 1998-01-12 2000-03-28 Life Technologies, Inc. Apparatus for drying solutions containing macromolecules
DE10224883B4 (en) 2001-07-27 2010-07-29 Heidelberger Druckmaschinen Ag Drying station and method for drying printed sheets
US6760981B2 (en) 2002-01-18 2004-07-13 Speedline Technologies, Inc. Compact convection drying chamber for drying printed circuit boards and other electronic assemblies by enhanced evaporation
US9387698B2 (en) 2014-07-24 2016-07-12 Xerox Corporation Printer convection dryer
US10113795B2 (en) * 2015-06-26 2018-10-30 M&R Printing Equipment, Inc. Dryer conveyor belt tracking system
CN105972998B (en) * 2016-07-11 2018-06-12 天津金戈科技发展有限责任公司 A kind of diversing flow system of mesh belt dryer
CN112389092A (en) * 2020-11-17 2021-02-23 临沂美华装饰纸业有限公司 Automatic high-efficient drying device is used in intaglio printing

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2603238A1 (en) * 1975-02-01 1976-08-19 Jan Van Tilburg Fabric drying process - uses permeable moving support with downward and upward gas streams
DE2607504C3 (en) * 1976-02-25 1979-02-01 Gerhard 4800 Bielefeld Klemm Device for drying thin materials in pieces or webs in a continuous flow
DE2344227C2 (en) * 1973-09-01 1982-12-09 Albert-Frankenthal Ag, 6710 Frankenthal Continuous dryer
EP0180015A2 (en) * 1984-10-27 1986-05-07 Gerhard Klemm Apparatus for drying or cooling thin objects such as sheets, boards or similar objects

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2651849A (en) * 1949-04-02 1953-09-15 Mechanical Handling Sys Inc Oven drier
US3254426A (en) * 1962-05-14 1966-06-07 Cardel Electric Co Inc Air-jet dryer for printed material
US3319353A (en) * 1964-03-30 1967-05-16 Niwa Machinery Company Ltd Pressing and drying devices for corrugated board manufacturing equipment
US3359648A (en) * 1965-04-05 1967-12-26 Overly S Inc Dryer with vacuum bar sheet feeder
FR2182406A6 (en) * 1972-04-26 1973-12-07 Scaal
US4015103A (en) * 1975-02-19 1977-03-29 Xerox Corporation Fuser conveyor belt
IT1174497B (en) * 1984-02-17 1987-07-01 Prot Srl EQUIPMENT FOR STERILIZING IN A CONTINUOUS CONTAINER FOR THE PHARMACEUTICAL INDUSTRY OF THE TUNNEL TYPE
US4905381A (en) * 1988-06-15 1990-03-06 Poterala Robert J Open top compact dryer oven for a web

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2344227C2 (en) * 1973-09-01 1982-12-09 Albert-Frankenthal Ag, 6710 Frankenthal Continuous dryer
DE2603238A1 (en) * 1975-02-01 1976-08-19 Jan Van Tilburg Fabric drying process - uses permeable moving support with downward and upward gas streams
DE2607504C3 (en) * 1976-02-25 1979-02-01 Gerhard 4800 Bielefeld Klemm Device for drying thin materials in pieces or webs in a continuous flow
EP0180015A2 (en) * 1984-10-27 1986-05-07 Gerhard Klemm Apparatus for drying or cooling thin objects such as sheets, boards or similar objects

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993019337A2 (en) * 1992-03-19 1993-09-30 Reinhart Schmidt Gmbh System for drying products on a moving conveyor belt, in particular the gum strips on envelopes
WO1993019337A3 (en) * 1992-03-19 1993-11-25 Schmidt Gmbh Reinhart System for drying products on a moving conveyor belt, in particular the gum strips on envelopes
CN107367141A (en) * 2017-08-01 2017-11-21 安徽华众焊业有限公司 A kind of welding rod medicinal powder baking oven device

Also Published As

Publication number Publication date
DE3936958A1 (en) 1991-05-08
DE59000885D1 (en) 1993-03-25
DE3936958C2 (en) 1991-10-17
EP0427122B1 (en) 1993-02-10
US5154010A (en) 1992-10-13

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