CA1044458A - Device for coating strip material in continuous operation - Google Patents
Device for coating strip material in continuous operationInfo
- Publication number
- CA1044458A CA1044458A CA208,029A CA208029A CA1044458A CA 1044458 A CA1044458 A CA 1044458A CA 208029 A CA208029 A CA 208029A CA 1044458 A CA1044458 A CA 1044458A
- Authority
- CA
- Canada
- Prior art keywords
- coating
- frame structure
- air
- auxiliary frame
- assembly
- 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
Links
- 239000011248 coating agent Substances 0.000 title claims abstract description 161
- 238000000576 coating method Methods 0.000 title claims abstract description 161
- 239000000463 material Substances 0.000 title claims abstract description 36
- 238000001035 drying Methods 0.000 claims abstract description 23
- 238000009434 installation Methods 0.000 claims abstract description 20
- 230000000712 assembly Effects 0.000 claims abstract description 8
- 238000000429 assembly Methods 0.000 claims abstract description 8
- 239000003344 environmental pollutant Substances 0.000 claims description 11
- 231100000719 pollutant Toxicity 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims 2
- 230000003213 activating effect Effects 0.000 claims 1
- 230000014759 maintenance of location Effects 0.000 claims 1
- 238000004140 cleaning Methods 0.000 abstract description 25
- 231100001234 toxic pollutant Toxicity 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 239000000306 component Substances 0.000 description 6
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001473 noxious effect Effects 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 206010013457 Dissociation Diseases 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 229940020445 flector Drugs 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 210000001331 nose Anatomy 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0826—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
- B05C1/0834—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets the coating roller co-operating with other rollers, e.g. dosing, transfer rollers
Landscapes
- Coating Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
A DEVICE FOR COATING STRIP MATERIAL IN CONTINUOUS
OPERATION
ABSTRACT OF THE DISCLOSURE
There is disclosed a coating device for coating bands or ribbons with a coating material in continuous operation. The coating device comprises a main frame which mounts one or two deflector rollers for guiding and conveying the band or ribbon material to be coated. Coating is effected by a coating assembly which includes a fountain roll, a metering roll and an applicator roll which are disposed in axially parallel relationship and are adjustable relative one to another and relative to the band or ribbon to be coated as it is guided over one of the deflector rollers. The coating assembly is mounted on an auxiliary frame which is displaceable in the direction normal to the deflector roller over which the ribbon or band is guided. The auxiliary frame, in turn, is displaceable relative to the main frame for the purpose of making the rolls in the coating assembly conveniently accessible for cleaning or other servicing. There is further disclosed an installation including one or more coating devices in superimposition, each enclosed by an enclosure and drying and burning assemblies for purifying obnoxious or toxic pollutants entrained in the air passed through the enclo-sures of the coating devices before the air is discharged in the atmosphere.
OPERATION
ABSTRACT OF THE DISCLOSURE
There is disclosed a coating device for coating bands or ribbons with a coating material in continuous operation. The coating device comprises a main frame which mounts one or two deflector rollers for guiding and conveying the band or ribbon material to be coated. Coating is effected by a coating assembly which includes a fountain roll, a metering roll and an applicator roll which are disposed in axially parallel relationship and are adjustable relative one to another and relative to the band or ribbon to be coated as it is guided over one of the deflector rollers. The coating assembly is mounted on an auxiliary frame which is displaceable in the direction normal to the deflector roller over which the ribbon or band is guided. The auxiliary frame, in turn, is displaceable relative to the main frame for the purpose of making the rolls in the coating assembly conveniently accessible for cleaning or other servicing. There is further disclosed an installation including one or more coating devices in superimposition, each enclosed by an enclosure and drying and burning assemblies for purifying obnoxious or toxic pollutants entrained in the air passed through the enclo-sures of the coating devices before the air is discharged in the atmosphere.
Description
09~l5~ l SPECIFICATION
The invention relates to a coatlng device for coating material ln ribbon or band form in continuous operation and also to an installation which includes ~uch coating devices and purifying mean~ for removing pollutants entrained in the alr used for accèlerating drying o~ the coating material after appllcation thereo before the air is discharged into the atmosphere.
BACKGROUND
There ~re known coating devices of the general kind . above-referred to which include one deflector roller or an upper and a lower deflector roller for guiding and conveying the band or ribbon material to be coated in contlnuous operation.
In many instances the quality speciications with respect to the uniformity of the coating on the band or ribbon material is much greater for one side of the material than for the other side. In that case, the coating device for producing the high quality coating comprises a fountain roll for taking-up coating from a source of supply, a metering roll and an applicator roll. Such coating device for producing the high quality coating is mounted on a frame structure 80 that it~
position can be ad~usted relative to the respective deflector ~oller.
Installations for coating band or ribbon material i frequently comprise two coating device~ to permit rapid changing from one type of coating material to another: for instance, it may be desired to change the color or the coatlng materlal. ~f two or even more coating devices are provlded, the devlce8 are generally arranged in superimpositlon and ~Qounted on a co~mon frame structure d0tachable th~rerom.
. ,, ~ 2- ~ ~
. , .... ,, ~, . .. . ... .. . ... .
`~ 10~
~¦ With an installation of this type, the band or ribbon side to be coated with the high quality coating being generally the upwardly facing sides, it becomes nece~ary to effect a thorough cleaning of the rolls of each coating devlce before a change in color or coating material can be effected. As 18 evident, if the cleaning is not thoroughly made any residues of the previously used material will cause irregularities in the coating made after the cleaning of the coating device.
The need for such thorough cleanlng o the coating device~ is well understood in the art and to make such cleaning possible it i8 known to arrange the coating devices in the installation so that each of the coating devices can be laterally withdrawn to assure that the coating devices are accessible for cleaning. The disadvantage of such lateral displacement a~ is now known is that considerable space i~
required for the coating device itself and such high space demand, in turn, greatly enlarges the total space required for the complete coating installation, i.e., including the assembly or assemblies needed for removing of pollutants that are unavoidably entrained in air passed through the coating devices. Virtually all coating materials contain volatile pollutants that are noxious and sometimes even toxic 80 that the air must be thoroughly purified before it can be discharged into the atmosphere. Arrangement of two superimposed coating devices, each coacting with a de1ectox roller makes it difficult to provide adequate accessibility to the fountain roll, metering roll and applicator roll of the coating devices ~or the purpose of thorough cleaning. In particular, con~iderable difficulties are encountered if the rolls of both coatlng devices are to be cleaned.
10'}~ 5FJ
Moreover, lateral withdrawal of the rolls of each of the coating devices for purpose of cleaning also requires that each such roll is detached from its drive and such detach-ment, ln turn, creates another problem since thorough cleaning of the rolls must be made while the rolls are turning. Hence, to ef~ect such turning the rolls must be coupled to an auxlliary drive. After completion of the cleaning each roll must be detached from the auxlliary drive and re-attached to the drive of the device. All such decoupling, cleaning and recoupling bbviously requires considerable time and labor and, thus, a corresponding increase in costs.
The sealed enclosure of the installation, i.e., the enclosure in which the coating device proper is located, is connected with a suitable suction pump for sucking off the volatile components released by the coating material. Such ~uction pump and the conduits connected therewith should be laid out 80 that a rapid air exchange is obtalned to provide acceptable air conditions for the service personnel. The volume of air discharged from the space in which the coating i8 carried out can be fully fed to the drying assembly ~or drying of the coatin~ material applied in the coating device only if and when this volume of air does not exceed the air requirements of the drylng assembly. The drying assembly i~ coupled in it~ downstream position with an after-burning device. The purpose of such after-burner i8 to assure rea~onably complete elimination of noxious or toxic pollutants. The level of air purlfication is generally controlled by strict codes which provlde that the air discharged into the atmosphere cannot include more than a definite maximal percentage of pollutants.
r 10d.4458 To hold the operational costs of such after-burner assemblies as low as possible, efforts have been made to assure that the total volume of d~scharged air i~ reduced to an absolute minimum. To obtain optimal operational conditions for the installation it is advantageous that the total volume of air di~charge can be processed in one after-burner assembly.
However, such processing of the total air volume pre~upposes that the volume of air as di~charged from the enclosure in-cluding one or more coating device can be fed to a drying assembly. This is only po~sible if the enclosed and sealed space for the coating devices, i.e., the overall dimensions of the enclosures for the coating devices i8 already at a minimum.
THE INVENTION
.. . __ It 18 a broad ob~ect of the invention to provide a novel and improved coating device of the general kind above referred to in which the enclosure for the coating device and the coating device itself are reduced to minimal dimensions whlle at the same time obtaining maximal accesslbility of the coating device for cleaning and other servicing.
Another ob~ect of the invention 18 to provide a novel and lmproved installation 80 arranged that the air flow which, after passing through enclosures for the coating devlce or devlces has entrained therein pollutants, is limited to a volume of alr which can be purified at optimal conditions.
SUMMARY OF TH2 INVE~TION
The afore-pointed out ob~ects, features and advantages a~d oth-r ob~ect~, features-and advantages which will be :' , .
j ~5~
~-0~5 pointed out here$nafter are obtained by providing a coatlng device including a main frame structure, an auxiliary frame structure and a coating applicating assembly. The auxiliary frame structure support6 the applicating assembly 80 that the same i~ displaceable in the direction normal to the path of the band or ribbon to be coated and is, in turn, supported by the main frame-structure 80 that it can be displaced relatlve to said frame structure and also be detached therefrom. As a regult, the over-all dimensions of the enclosure for the coating device can be selected 80 that the volume of air which must be passed through the enclosure during the coating operation can be held withln limits which permit purification of the discharged air under optimal conditions and thus the volume of air continuously sucked out from the enclosure during a coating operation remains continuously at a rate whlch allows the use of economically acceptable after-burner asse~blies.
The discharge openings in the enclosures now need to be pro-vlded lengthwise of the bottom of the enclosure extending rows while heretofore additional crosswise extending air discharge openings w~re required.
The installat~on according to the invention further provides optimal accessibility of the coatlng devices proper 80 that serv$c~ng thereof, especially if, for lnstance, change in the color of the coating material i8 to be effected, can be carried out without considerable 108s of time and without likelihood of lnsufficient cleaning of the rolls and other components of the coating device that need cleaning in case of change in the coating material.
After withdrawal of a coating device into the ~erviclng posit~on by a suitable power drive such as a servo ~y~tem, the ~ervlce personnel can clean or otherwise service the ~oll~ o~ 'ch- coating d-viao~ whllo tho roll~ continuo to rotato, 4~5~3 1 as it is necessary for thorough cleaning and to effect such cleaning without fir~t disconnecting the rollers from their operational drive means.
More specifically, the thorough cleaning of the rolls and other parts of the coating devices can be effected a~
sufficient space is available in a coating device according to the invention ~etween the coating devices proper and the d~
flector roller over which the band or ribbon to be coated is guided during coatlng. Heretofore it was necessary for this purpo~e to effect time-consuming and complex lateral wlth-drawal or complete detachment of the coating device by means of a hoist. Such cleaning and other servicing of a coating devlce also results in avoidance of damage to the rolls which are comparatively expenslve. Saving or reduction of the time required for cleaning the rolls of the coating device, and especially the applicator roll to effect rapid readying of the device in case of change in the color of the coating material or use of other coating materials, is of considerable economic signiflcance, the more 80 as modern technique desires high conveying ~peeds for the band or ribbon to be coated. The i importance of rapld readying of the coating device for re-start with a changed coating material i8 particularly important if comparatively small lots of bands or ribbon are to be coated.
Obviously, the smaller the lot to be coated i8, the more it become~ economically lmportant to ready the entire-installation for resumlng operation with the changed coat$ng material.
~he invention also provides that the afore-reerred to auxillary frame structure ~8 coupled to the main frame ~tructure by means of clamplng means which can be power operated, for lnstance by servo systems using hydraulic or alr pre~ure. The use of such clamping means permits locking ,, i ' _7_ 4~58 of the auxll$ary ~rame structure to the main frame structure without tendency to vibrate, and simultaneously make~ it easy to release the auxillary frame structure ~rom the ma$n frame structure.
More specifically, operation of the clamping means is effected according to the invention by a power drive such as a cylinder-piston servo-system in which the connecting rod for the piston of the system mounts an angle lever mounting and operating clamping elements which are releasably engageable with complementary clamping elements on the auxiliary frame structure.
According to a further aspect of the invention, the auxiliary frame structure can be displaced relative to the main frame structure by a servo-system or other pbwer drive which is mounted on the main frame structure. By operating this system, the auxiliary ~rame structure and with it the coating assembly supported on the ~ame can be automati~ally detached from the main frame structure thereby obtaining alear space which is amply sufficient to carry out a thorough cleaning operation of the ent~re coating device without diffi-culty.
The alr discharge and purifying parts and conduits which are dlsposed laterally of the main frame structure and the auxiliary frame structure can be used for immediate sucking out of air containing volatile pollutants or contaminants a~
may be released during a cleaning operation.
To permit continuous operatlon even during change of the coating material, the invention also provides that several coating devlces are disposed each in a separate enclosure and ln ~uperimposition. These enclosed coating ~ 4~5B
devices are connected with a common drying as~embly and an after-burner a~sembly dow n~tream of the drying assembly. The total discharge of contaminated alr from the enclosures i9 fed to the drying assembly and the burner assembly by means of a suitable suction pump. Since the volume of air discharged from the enclosures in which the coating 18 carried out does not exceed the volume of air which can be accepted by the drying assembly, the total volume of air which contains a comparatively low amount of pollutants can be safely fed to the drying assembly. Add$tional content of pollutant as may be released in the drying assembly can subsequently be removed in the after-burner assembly. As a res~lt, an additional after-burner assembly or the air discharged from the space in which coating is effected is thus avoided.
BRIEF DESCRIPTIO~ OF THE DRAWINGS
In the accompanying drawing, preferred embodiments of the invention are shown by way of illustration and not by way of limltation.
In the drawing:
Flg. 1 is a diagrammatic elevational view of a coatir.g device for coating both sides of a band or ribbon materlal in continuous operation;
Fig. 2 i8 a simplified plan view of Fig. 1; and Fig. 3 i8 a diagrammatic elevational view o~ an installation including coating devices according to Fig. 1 disposed in superimposition for ~imultaneou~ly or singly coating ribbons or bands and further including an air-puxifying devico.
. pETAII.ED DESCRIPTION OF THE D~AWING
rrlng now to th~ ureu in groater detall, and _g_ 1 e ~ '~
1~ 10'1~51!3 first to Fig. 1, the coating device exemplified in thls figure comprises a main frame structure 1 and an auxiliary frame structure 2. ~hese frame structures mount separate coating device~ 3 and 4.
The main frame 1 further mounts two rotary deflector rollers 5 and 6 which serve to guide and convey a band or ribbon 7 to be coated. The auxiliaxy frame structure 2 mounts coating device 4 which ls slidable relative to this frame structure by means of a guide slide 8. The coating device 4 1~ designed for coatlng the top or exposed side of band or rlbbon 7 while coating device 3 serves for coating or otherwige treating the back side of the band or ribbon. The coating mater~al may be any material suitable for the purpose, such as a dye, paint, lacquer, liquefied plastic, etc. Both coating devices are substantially alike as to their functional arrangement except that the coating device 4 being designed for coatlng the top side of the band or ribbon must be and is designed to effect a coating which satisfies high demand for uniformity, accuracy and similar requirements. Accordingly, device 4 includes various ad~ustment and control means which are not required for coating device 3 if, as i8 frequently the case, the demands on the quality of the coating on the back side are much lower than those for the coatlng of the top side.
Coating device 4 comprises an applicator roll 9, a fountain roll 10 for taking-up the coating material to be applied, and a metering roll 11. ~imilarly, the coating devlce 3 comprises an applicator roll 9', a fouhtain roll 10' and a metering roll 111. ~
,-., , -10-~ . ,,,", ,,, ,,., ,~ ' ' ' ' r 104~45~ ~
In addition~to the afore-listed rolls, coating device 4 comprises guide carriers or slides 12, 13 and 14, each supporting one of the rolls. ~he position~ of these slides and thus of the rolls relative one to another are ad~ustable by fine setting means such as hand wheels 18, 19 and 20 80 that the cylindrical wall of the rolls are in coacting engagement, or in other words, the peripheral surface of one of the rolls roll~ of the peripheral ~urface of the adjacent roll or rolls. Each of the three rolls is drivingly coupled by coupling~ 15, 16 and 17, respectively, with a separate drive means 21(see Fig. 2).
Moreover, the entire coating device 4 can be by means of guide slide 8 which carries the guide slides 12, 13 and 14, displaced relative to the upper deflector roller 5 by means of a cylinder-piston-servo means 22 having a short stroke until stopped by an adjustable stop 37. The servo means 22 can be driven hydraulically or by air pressure. The purpose of the servo means is to move the coating device clear of the band when and while ~olnts of lengths of band or ribbon pass the coating device, as such ~oints generally are somewhat thicXer than tbe normal thickness of the band. After the passage of such ~oint the coating device is returned into 1ts coating position. Control of the ~ervo means can be automati-cally effected, for instance, by means of photocells or other control means conventional readily available ln the market.
The application o~ coatlng material is effected by transfer of materlal taken up by fountaln roll 10 to metering roll 11, and finally, to applicator roll 9, which applies the coating material upon the upward facing band or rlbbon 7 as the same i8 being guidod and conveyed by deflector roll 5.
., , . ,, . . , . . ~ .. . . .
1 10'14458 If the coating material i8 to be changed, for instance if material having a different color i8 to be used, rolls 9, lO and ll of coating device 4 and possibly other compo-nents thereof must be very carefully cleaned to prevent S faulty coating such as discoloration, spots, etc. For the purpose of such cleaning, the entlre coating device 4 can be dlsplaced in the ~lengthwise direction of the coatlng device, that is, normal to the ax~s of roller 5, to a position in which there is free and convenient access to the device for cleaning the rolls and possibly other components.
To effect such convenient displacement of the coating device into and out of it~ operational posltion for the pur-pose of cleaning, the auxiliary frame structure 2 is displace-able on a guide means 23 which is mounted on the base or inserted lnto the base of auxiliary frame structure 2. Displacement of frame structure 2 is effected by suitable adjustment mean~
such as a hydraulically operated servo-piston system 24. This servo-system is fixedly secured to main frame ætructure 1 and the piston rod 25 of system 24 can be moved into engagement with protrusions such as studs 2~ on frame structure 2. Ac-cordingly, by operating the servo system 24, its pi~ton rod 25 can be used to move coating device 4 via auxiliary frame structure 2 lnto and out of its operational pos1tion.
Setting of auxlliary frame structure 2 and coating device 4 relatlve to deflector roller 5 is effected in the following manner: First, piston rod 25 of servo system 24 i~
operated to couple~frame structure 2 with frame structure l.
As a result, there is a force-transmitting connection between both frame 8tructures-by means of a further powe~ operated, for 1n8tance, hydraulically by a cyllnder-plston ~ervo system 27.
! -12-o~
~ ' i i The piston 28 of this system mounts a linkage 29 and 30 to which are hinged locking elements 31 and 32 which, upon operation of servo-system 27 effect coupling with coupling noses such as discs 33 and 34 on auxiliary frame structure 2.
After connection of frame structure 2 to frame ~tructure 1, fine adjustments of rolls 9, 10 and 11 is effected by hand wheels 18, 19 and 20, respectively.
Operation of coating device 3 is essentially the same as that of coating device 4, except that ad~ustment and clearing of rolls 9~, 10l and 11' is not or is only rarely required ~ince the quallty d~ma~ on the coating of the bottom side of band or ribbon are much less on the coating of the top slde a~
previously explained.
Turning now to Figs. 2 and 3, these figures show application of the invention to an in~tallation including two or more coating devices 80 that minimum space requirement is combined with convenient servicing of the coating devices as hereinbefore described. Furthermore, the installation due to the arrangement of coating devices according to the invention can be 80 designed that the air released during operation of the coating devices can be conveiently and thoroughly purified.
Many types of coating materials such as certain paints, dyes, etc. contain volatile components which are released during applicatlon and drying and are obnoxious or even toxic.
Accordingly, purification of the discharged air i~ highly necess2ry and often required by local code~.
Flgs. 2 and 3 show diagrammatically an installation whlch fully utilizes the advantages of coating devices according to the inventlon. ~s it is shown in the~e figures, each of the two coating devices i8 enclosed in a separate 1~)4~45~ 1 ~ealed-off enclosure 37 and 37', re~pectively. The outside dimensions o~ these enclosures can be conveniently selected in accordance with the minimal space requirements of the main frame structure and the auxlliary frame ~tructure of coating 1 devlce 4. There are shown two coating devices disposed in superimpo~ition and enclosed by enclosure# 37 and 37', respectively. Of course, there may be several enclosures slde-by-side on the same levol. More than two coating devices and ¦ enclosure~ therefor can be superimposed. Drying air after 1 being drawn through the enclosures or the coating devices 18 fed vla discharge ducts 35 to air-pur$fylng assemblies as lt ¦ is shown in Fig. 3 to tho rlght of the coating devices. Ducts ¦ 35 are preforably arranged parallel to each other as it is ¦ shown in Fig. 3 and also parallel to the bottom of the enclosures, ¦ thereby reduclng the required space to a minimum. Moreover, ¦ due to such arrangement, the requlred air volume can be main-tained 80 that the discharge of the total air volume from enclosures 37 and 37' and the feed of this discharged air to the air purifying assembllos is made readily posslble.
There 18 provlded for each of the enclosures 37 and 37~ an air-purifylng assembly. The assembly for coacting wlth enclosuro 37 i8 fully shown and described, but the assembly for enclosure 37~ 1~ only partly shown as the two assemblies are allke and function ln the same manner.
The assembly coactlng with enclosure 37 comprise~ a drylng devlce 38 whlch, as shown, may be divided into several partss a heat-oxchanqer 39, burners 40, one for each part of the drylng devlce, an after-burner 41, a suction pump 42, and 6uction pUmp8 43, one for each burner 40. All these components are prosumea to be of conventional design. The alr used in encloJur- 37 durlng tho coating operatlons, which as prevlously ~ -14-.
lL5~ ~
becomes contaminated during and due to the coacting operations, i~ sucked out by means of suction pump 42 and fed vla condult 35 and heat-exchanger 39 to drylng device 38. The drylng ~ process in devlce 38 removes most o the contamlnants ln the ¦ air. The air is then returned to heat-exchanger 39 and from this exchanger to suction pump 42 through which it i8 discharged into the atmospher~e. To assure still further purification of the air, the after-burner 41 may be interposed between the l drying device and the heat exchanger. It has been found that ¦ reheating of the air while being dried in drying device 38 18 neces~ary or, at least, deQlrable. For thls purpose, part of the alr in the drying devlce 18 sucked out by suction pumps 43 and exposed to the heat of burners 40 which causes not only reheatlng of the alr but also the burning of pollutants or con-lS taminants 8till contained in the air. The sucked-of~ air is returned into the drying device to be discharged thererom into the atmosphere together with the air remaining ln the drying device. Dotted arrowheads indicate the feed of air from the enclosure 38 into the drylng device and solid arrowheads indlcate the flow of part of the air as caused by suction pumps 43, As several coating devices are arranged in super-impositlon in Flg. 3 and each one i8 enclosed in an enalosure there i8 no unde~lrable delay ln the carrying out of a coating oparation ln one of the coatlng devices when a c~hange in the coating material i8 effected in another coating device. In other words, all coating devices can be Xept in operation excopt the one in whlch a change ~ the coating materlal is ~ade.
, . , ,,, -15- ~
, .,. - ,~ .-~,.~ .--. ,, . , ;
1~41/~5~ 1 In case two ~uperimposed coating devices are used for coatlng the top side of bands or ribbons within the same installation vibrations may occur when one of the coating devices is withdrawn for cleaning purposes or change in the coating material. The result of such vibrations would be irregularities in the coating as effected by the second coating device. ~his danger is avoided by providing separation of the coating devices by Qnclosures as it is shown in Fig. 3.
l While the inventlon has been described in detail with ¦ respect to certain now preferred examples and embodiments of the invention, it will be understood by those skilled in the art, after understanding the invention, that various change~
and modifications may be made without departing from the l spirit and scope of the invention, and it is intended, therefore, ¦ to cover all such changes and modifications in the appended cla1m-.
; ' ' .' . , ~` ., I
I ' .
.
The invention relates to a coatlng device for coating material ln ribbon or band form in continuous operation and also to an installation which includes ~uch coating devices and purifying mean~ for removing pollutants entrained in the alr used for accèlerating drying o~ the coating material after appllcation thereo before the air is discharged into the atmosphere.
BACKGROUND
There ~re known coating devices of the general kind . above-referred to which include one deflector roller or an upper and a lower deflector roller for guiding and conveying the band or ribbon material to be coated in contlnuous operation.
In many instances the quality speciications with respect to the uniformity of the coating on the band or ribbon material is much greater for one side of the material than for the other side. In that case, the coating device for producing the high quality coating comprises a fountain roll for taking-up coating from a source of supply, a metering roll and an applicator roll. Such coating device for producing the high quality coating is mounted on a frame structure 80 that it~
position can be ad~usted relative to the respective deflector ~oller.
Installations for coating band or ribbon material i frequently comprise two coating device~ to permit rapid changing from one type of coating material to another: for instance, it may be desired to change the color or the coatlng materlal. ~f two or even more coating devices are provlded, the devlce8 are generally arranged in superimpositlon and ~Qounted on a co~mon frame structure d0tachable th~rerom.
. ,, ~ 2- ~ ~
. , .... ,, ~, . .. . ... .. . ... .
`~ 10~
~¦ With an installation of this type, the band or ribbon side to be coated with the high quality coating being generally the upwardly facing sides, it becomes nece~ary to effect a thorough cleaning of the rolls of each coating devlce before a change in color or coating material can be effected. As 18 evident, if the cleaning is not thoroughly made any residues of the previously used material will cause irregularities in the coating made after the cleaning of the coating device.
The need for such thorough cleanlng o the coating device~ is well understood in the art and to make such cleaning possible it i8 known to arrange the coating devices in the installation so that each of the coating devices can be laterally withdrawn to assure that the coating devices are accessible for cleaning. The disadvantage of such lateral displacement a~ is now known is that considerable space i~
required for the coating device itself and such high space demand, in turn, greatly enlarges the total space required for the complete coating installation, i.e., including the assembly or assemblies needed for removing of pollutants that are unavoidably entrained in air passed through the coating devices. Virtually all coating materials contain volatile pollutants that are noxious and sometimes even toxic 80 that the air must be thoroughly purified before it can be discharged into the atmosphere. Arrangement of two superimposed coating devices, each coacting with a de1ectox roller makes it difficult to provide adequate accessibility to the fountain roll, metering roll and applicator roll of the coating devices ~or the purpose of thorough cleaning. In particular, con~iderable difficulties are encountered if the rolls of both coatlng devices are to be cleaned.
10'}~ 5FJ
Moreover, lateral withdrawal of the rolls of each of the coating devices for purpose of cleaning also requires that each such roll is detached from its drive and such detach-ment, ln turn, creates another problem since thorough cleaning of the rolls must be made while the rolls are turning. Hence, to ef~ect such turning the rolls must be coupled to an auxlliary drive. After completion of the cleaning each roll must be detached from the auxlliary drive and re-attached to the drive of the device. All such decoupling, cleaning and recoupling bbviously requires considerable time and labor and, thus, a corresponding increase in costs.
The sealed enclosure of the installation, i.e., the enclosure in which the coating device proper is located, is connected with a suitable suction pump for sucking off the volatile components released by the coating material. Such ~uction pump and the conduits connected therewith should be laid out 80 that a rapid air exchange is obtalned to provide acceptable air conditions for the service personnel. The volume of air discharged from the space in which the coating i8 carried out can be fully fed to the drying assembly ~or drying of the coatin~ material applied in the coating device only if and when this volume of air does not exceed the air requirements of the drylng assembly. The drying assembly i~ coupled in it~ downstream position with an after-burning device. The purpose of such after-burner i8 to assure rea~onably complete elimination of noxious or toxic pollutants. The level of air purlfication is generally controlled by strict codes which provlde that the air discharged into the atmosphere cannot include more than a definite maximal percentage of pollutants.
r 10d.4458 To hold the operational costs of such after-burner assemblies as low as possible, efforts have been made to assure that the total volume of d~scharged air i~ reduced to an absolute minimum. To obtain optimal operational conditions for the installation it is advantageous that the total volume of air di~charge can be processed in one after-burner assembly.
However, such processing of the total air volume pre~upposes that the volume of air as di~charged from the enclosure in-cluding one or more coating device can be fed to a drying assembly. This is only po~sible if the enclosed and sealed space for the coating devices, i.e., the overall dimensions of the enclosures for the coating devices i8 already at a minimum.
THE INVENTION
.. . __ It 18 a broad ob~ect of the invention to provide a novel and improved coating device of the general kind above referred to in which the enclosure for the coating device and the coating device itself are reduced to minimal dimensions whlle at the same time obtaining maximal accesslbility of the coating device for cleaning and other servicing.
Another ob~ect of the invention 18 to provide a novel and lmproved installation 80 arranged that the air flow which, after passing through enclosures for the coating devlce or devlces has entrained therein pollutants, is limited to a volume of alr which can be purified at optimal conditions.
SUMMARY OF TH2 INVE~TION
The afore-pointed out ob~ects, features and advantages a~d oth-r ob~ect~, features-and advantages which will be :' , .
j ~5~
~-0~5 pointed out here$nafter are obtained by providing a coatlng device including a main frame structure, an auxiliary frame structure and a coating applicating assembly. The auxiliary frame structure support6 the applicating assembly 80 that the same i~ displaceable in the direction normal to the path of the band or ribbon to be coated and is, in turn, supported by the main frame-structure 80 that it can be displaced relatlve to said frame structure and also be detached therefrom. As a regult, the over-all dimensions of the enclosure for the coating device can be selected 80 that the volume of air which must be passed through the enclosure during the coating operation can be held withln limits which permit purification of the discharged air under optimal conditions and thus the volume of air continuously sucked out from the enclosure during a coating operation remains continuously at a rate whlch allows the use of economically acceptable after-burner asse~blies.
The discharge openings in the enclosures now need to be pro-vlded lengthwise of the bottom of the enclosure extending rows while heretofore additional crosswise extending air discharge openings w~re required.
The installat~on according to the invention further provides optimal accessibility of the coatlng devices proper 80 that serv$c~ng thereof, especially if, for lnstance, change in the color of the coating material i8 to be effected, can be carried out without considerable 108s of time and without likelihood of lnsufficient cleaning of the rolls and other components of the coating device that need cleaning in case of change in the coating material.
After withdrawal of a coating device into the ~erviclng posit~on by a suitable power drive such as a servo ~y~tem, the ~ervlce personnel can clean or otherwise service the ~oll~ o~ 'ch- coating d-viao~ whllo tho roll~ continuo to rotato, 4~5~3 1 as it is necessary for thorough cleaning and to effect such cleaning without fir~t disconnecting the rollers from their operational drive means.
More specifically, the thorough cleaning of the rolls and other parts of the coating devices can be effected a~
sufficient space is available in a coating device according to the invention ~etween the coating devices proper and the d~
flector roller over which the band or ribbon to be coated is guided during coatlng. Heretofore it was necessary for this purpo~e to effect time-consuming and complex lateral wlth-drawal or complete detachment of the coating device by means of a hoist. Such cleaning and other servicing of a coating devlce also results in avoidance of damage to the rolls which are comparatively expenslve. Saving or reduction of the time required for cleaning the rolls of the coating device, and especially the applicator roll to effect rapid readying of the device in case of change in the color of the coating material or use of other coating materials, is of considerable economic signiflcance, the more 80 as modern technique desires high conveying ~peeds for the band or ribbon to be coated. The i importance of rapld readying of the coating device for re-start with a changed coating material i8 particularly important if comparatively small lots of bands or ribbon are to be coated.
Obviously, the smaller the lot to be coated i8, the more it become~ economically lmportant to ready the entire-installation for resumlng operation with the changed coat$ng material.
~he invention also provides that the afore-reerred to auxillary frame structure ~8 coupled to the main frame ~tructure by means of clamplng means which can be power operated, for lnstance by servo systems using hydraulic or alr pre~ure. The use of such clamping means permits locking ,, i ' _7_ 4~58 of the auxll$ary ~rame structure to the main frame structure without tendency to vibrate, and simultaneously make~ it easy to release the auxillary frame structure ~rom the ma$n frame structure.
More specifically, operation of the clamping means is effected according to the invention by a power drive such as a cylinder-piston servo-system in which the connecting rod for the piston of the system mounts an angle lever mounting and operating clamping elements which are releasably engageable with complementary clamping elements on the auxiliary frame structure.
According to a further aspect of the invention, the auxiliary frame structure can be displaced relative to the main frame structure by a servo-system or other pbwer drive which is mounted on the main frame structure. By operating this system, the auxiliary ~rame structure and with it the coating assembly supported on the ~ame can be automati~ally detached from the main frame structure thereby obtaining alear space which is amply sufficient to carry out a thorough cleaning operation of the ent~re coating device without diffi-culty.
The alr discharge and purifying parts and conduits which are dlsposed laterally of the main frame structure and the auxiliary frame structure can be used for immediate sucking out of air containing volatile pollutants or contaminants a~
may be released during a cleaning operation.
To permit continuous operatlon even during change of the coating material, the invention also provides that several coating devlces are disposed each in a separate enclosure and ln ~uperimposition. These enclosed coating ~ 4~5B
devices are connected with a common drying as~embly and an after-burner a~sembly dow n~tream of the drying assembly. The total discharge of contaminated alr from the enclosures i9 fed to the drying assembly and the burner assembly by means of a suitable suction pump. Since the volume of air discharged from the enclosures in which the coating 18 carried out does not exceed the volume of air which can be accepted by the drying assembly, the total volume of air which contains a comparatively low amount of pollutants can be safely fed to the drying assembly. Add$tional content of pollutant as may be released in the drying assembly can subsequently be removed in the after-burner assembly. As a res~lt, an additional after-burner assembly or the air discharged from the space in which coating is effected is thus avoided.
BRIEF DESCRIPTIO~ OF THE DRAWINGS
In the accompanying drawing, preferred embodiments of the invention are shown by way of illustration and not by way of limltation.
In the drawing:
Flg. 1 is a diagrammatic elevational view of a coatir.g device for coating both sides of a band or ribbon materlal in continuous operation;
Fig. 2 i8 a simplified plan view of Fig. 1; and Fig. 3 i8 a diagrammatic elevational view o~ an installation including coating devices according to Fig. 1 disposed in superimposition for ~imultaneou~ly or singly coating ribbons or bands and further including an air-puxifying devico.
. pETAII.ED DESCRIPTION OF THE D~AWING
rrlng now to th~ ureu in groater detall, and _g_ 1 e ~ '~
1~ 10'1~51!3 first to Fig. 1, the coating device exemplified in thls figure comprises a main frame structure 1 and an auxiliary frame structure 2. ~hese frame structures mount separate coating device~ 3 and 4.
The main frame 1 further mounts two rotary deflector rollers 5 and 6 which serve to guide and convey a band or ribbon 7 to be coated. The auxiliaxy frame structure 2 mounts coating device 4 which ls slidable relative to this frame structure by means of a guide slide 8. The coating device 4 1~ designed for coatlng the top or exposed side of band or rlbbon 7 while coating device 3 serves for coating or otherwige treating the back side of the band or ribbon. The coating mater~al may be any material suitable for the purpose, such as a dye, paint, lacquer, liquefied plastic, etc. Both coating devices are substantially alike as to their functional arrangement except that the coating device 4 being designed for coatlng the top side of the band or ribbon must be and is designed to effect a coating which satisfies high demand for uniformity, accuracy and similar requirements. Accordingly, device 4 includes various ad~ustment and control means which are not required for coating device 3 if, as i8 frequently the case, the demands on the quality of the coating on the back side are much lower than those for the coatlng of the top side.
Coating device 4 comprises an applicator roll 9, a fountain roll 10 for taking-up the coating material to be applied, and a metering roll 11. ~imilarly, the coating devlce 3 comprises an applicator roll 9', a fouhtain roll 10' and a metering roll 111. ~
,-., , -10-~ . ,,,", ,,, ,,., ,~ ' ' ' ' r 104~45~ ~
In addition~to the afore-listed rolls, coating device 4 comprises guide carriers or slides 12, 13 and 14, each supporting one of the rolls. ~he position~ of these slides and thus of the rolls relative one to another are ad~ustable by fine setting means such as hand wheels 18, 19 and 20 80 that the cylindrical wall of the rolls are in coacting engagement, or in other words, the peripheral surface of one of the rolls roll~ of the peripheral ~urface of the adjacent roll or rolls. Each of the three rolls is drivingly coupled by coupling~ 15, 16 and 17, respectively, with a separate drive means 21(see Fig. 2).
Moreover, the entire coating device 4 can be by means of guide slide 8 which carries the guide slides 12, 13 and 14, displaced relative to the upper deflector roller 5 by means of a cylinder-piston-servo means 22 having a short stroke until stopped by an adjustable stop 37. The servo means 22 can be driven hydraulically or by air pressure. The purpose of the servo means is to move the coating device clear of the band when and while ~olnts of lengths of band or ribbon pass the coating device, as such ~oints generally are somewhat thicXer than tbe normal thickness of the band. After the passage of such ~oint the coating device is returned into 1ts coating position. Control of the ~ervo means can be automati-cally effected, for instance, by means of photocells or other control means conventional readily available ln the market.
The application o~ coatlng material is effected by transfer of materlal taken up by fountaln roll 10 to metering roll 11, and finally, to applicator roll 9, which applies the coating material upon the upward facing band or rlbbon 7 as the same i8 being guidod and conveyed by deflector roll 5.
., , . ,, . . , . . ~ .. . . .
1 10'14458 If the coating material i8 to be changed, for instance if material having a different color i8 to be used, rolls 9, lO and ll of coating device 4 and possibly other compo-nents thereof must be very carefully cleaned to prevent S faulty coating such as discoloration, spots, etc. For the purpose of such cleaning, the entlre coating device 4 can be dlsplaced in the ~lengthwise direction of the coatlng device, that is, normal to the ax~s of roller 5, to a position in which there is free and convenient access to the device for cleaning the rolls and possibly other components.
To effect such convenient displacement of the coating device into and out of it~ operational posltion for the pur-pose of cleaning, the auxiliary frame structure 2 is displace-able on a guide means 23 which is mounted on the base or inserted lnto the base of auxiliary frame structure 2. Displacement of frame structure 2 is effected by suitable adjustment mean~
such as a hydraulically operated servo-piston system 24. This servo-system is fixedly secured to main frame ætructure 1 and the piston rod 25 of system 24 can be moved into engagement with protrusions such as studs 2~ on frame structure 2. Ac-cordingly, by operating the servo system 24, its pi~ton rod 25 can be used to move coating device 4 via auxiliary frame structure 2 lnto and out of its operational pos1tion.
Setting of auxlliary frame structure 2 and coating device 4 relatlve to deflector roller 5 is effected in the following manner: First, piston rod 25 of servo system 24 i~
operated to couple~frame structure 2 with frame structure l.
As a result, there is a force-transmitting connection between both frame 8tructures-by means of a further powe~ operated, for 1n8tance, hydraulically by a cyllnder-plston ~ervo system 27.
! -12-o~
~ ' i i The piston 28 of this system mounts a linkage 29 and 30 to which are hinged locking elements 31 and 32 which, upon operation of servo-system 27 effect coupling with coupling noses such as discs 33 and 34 on auxiliary frame structure 2.
After connection of frame structure 2 to frame ~tructure 1, fine adjustments of rolls 9, 10 and 11 is effected by hand wheels 18, 19 and 20, respectively.
Operation of coating device 3 is essentially the same as that of coating device 4, except that ad~ustment and clearing of rolls 9~, 10l and 11' is not or is only rarely required ~ince the quallty d~ma~ on the coating of the bottom side of band or ribbon are much less on the coating of the top slde a~
previously explained.
Turning now to Figs. 2 and 3, these figures show application of the invention to an in~tallation including two or more coating devices 80 that minimum space requirement is combined with convenient servicing of the coating devices as hereinbefore described. Furthermore, the installation due to the arrangement of coating devices according to the invention can be 80 designed that the air released during operation of the coating devices can be conveiently and thoroughly purified.
Many types of coating materials such as certain paints, dyes, etc. contain volatile components which are released during applicatlon and drying and are obnoxious or even toxic.
Accordingly, purification of the discharged air i~ highly necess2ry and often required by local code~.
Flgs. 2 and 3 show diagrammatically an installation whlch fully utilizes the advantages of coating devices according to the inventlon. ~s it is shown in the~e figures, each of the two coating devices i8 enclosed in a separate 1~)4~45~ 1 ~ealed-off enclosure 37 and 37', re~pectively. The outside dimensions o~ these enclosures can be conveniently selected in accordance with the minimal space requirements of the main frame structure and the auxlliary frame ~tructure of coating 1 devlce 4. There are shown two coating devices disposed in superimpo~ition and enclosed by enclosure# 37 and 37', respectively. Of course, there may be several enclosures slde-by-side on the same levol. More than two coating devices and ¦ enclosure~ therefor can be superimposed. Drying air after 1 being drawn through the enclosures or the coating devices 18 fed vla discharge ducts 35 to air-pur$fylng assemblies as lt ¦ is shown in Fig. 3 to tho rlght of the coating devices. Ducts ¦ 35 are preforably arranged parallel to each other as it is ¦ shown in Fig. 3 and also parallel to the bottom of the enclosures, ¦ thereby reduclng the required space to a minimum. Moreover, ¦ due to such arrangement, the requlred air volume can be main-tained 80 that the discharge of the total air volume from enclosures 37 and 37' and the feed of this discharged air to the air purifying assembllos is made readily posslble.
There 18 provlded for each of the enclosures 37 and 37~ an air-purifylng assembly. The assembly for coacting wlth enclosuro 37 i8 fully shown and described, but the assembly for enclosure 37~ 1~ only partly shown as the two assemblies are allke and function ln the same manner.
The assembly coactlng with enclosure 37 comprise~ a drylng devlce 38 whlch, as shown, may be divided into several partss a heat-oxchanqer 39, burners 40, one for each part of the drylng devlce, an after-burner 41, a suction pump 42, and 6uction pUmp8 43, one for each burner 40. All these components are prosumea to be of conventional design. The alr used in encloJur- 37 durlng tho coating operatlons, which as prevlously ~ -14-.
lL5~ ~
becomes contaminated during and due to the coacting operations, i~ sucked out by means of suction pump 42 and fed vla condult 35 and heat-exchanger 39 to drylng device 38. The drylng ~ process in devlce 38 removes most o the contamlnants ln the ¦ air. The air is then returned to heat-exchanger 39 and from this exchanger to suction pump 42 through which it i8 discharged into the atmospher~e. To assure still further purification of the air, the after-burner 41 may be interposed between the l drying device and the heat exchanger. It has been found that ¦ reheating of the air while being dried in drying device 38 18 neces~ary or, at least, deQlrable. For thls purpose, part of the alr in the drying devlce 18 sucked out by suction pumps 43 and exposed to the heat of burners 40 which causes not only reheatlng of the alr but also the burning of pollutants or con-lS taminants 8till contained in the air. The sucked-of~ air is returned into the drying device to be discharged thererom into the atmosphere together with the air remaining ln the drying device. Dotted arrowheads indicate the feed of air from the enclosure 38 into the drylng device and solid arrowheads indlcate the flow of part of the air as caused by suction pumps 43, As several coating devices are arranged in super-impositlon in Flg. 3 and each one i8 enclosed in an enalosure there i8 no unde~lrable delay ln the carrying out of a coating oparation ln one of the coatlng devices when a c~hange in the coating material i8 effected in another coating device. In other words, all coating devices can be Xept in operation excopt the one in whlch a change ~ the coating materlal is ~ade.
, . , ,,, -15- ~
, .,. - ,~ .-~,.~ .--. ,, . , ;
1~41/~5~ 1 In case two ~uperimposed coating devices are used for coatlng the top side of bands or ribbons within the same installation vibrations may occur when one of the coating devices is withdrawn for cleaning purposes or change in the coating material. The result of such vibrations would be irregularities in the coating as effected by the second coating device. ~his danger is avoided by providing separation of the coating devices by Qnclosures as it is shown in Fig. 3.
l While the inventlon has been described in detail with ¦ respect to certain now preferred examples and embodiments of the invention, it will be understood by those skilled in the art, after understanding the invention, that various change~
and modifications may be made without departing from the l spirit and scope of the invention, and it is intended, therefore, ¦ to cover all such changes and modifications in the appended cla1m-.
; ' ' .' . , ~` ., I
I ' .
.
Claims (11)
1. A coating device for coating bands with a coating material in continuous operation, said coating device comprising in combination:
a main stationary mounted frame structure;
rotary guide means for guiding band material to be coated, said guide means including at least one deflector roller and being mounted on said main frame structure:
a coating assembly for coating the side of the band outwardly facing on said roller, said assembly in-cluding a fountain roll for supplying coating material, a metering roll and an applicator roll disposed in axially parallel relationship one with the other and the deflector roller;
an auxiliary frame structure supporting said coating assembly, said auxiliary frame structure including guide means for slidably guiding said coating assembly as a unit in the direction normal to the rotary axis of the deflector roller for selecting varying positions of said assembly relative to said roller;
guide means on said main frame structure slidably supporting said auxiliary frame structure for selectively displacing the same in the direction normal to the axis as a unit relative to the main structure and thus relative to the deflector roller;
drive means for moving said auxiliary frame structure into a predetermined position relative to the main frame structure; and locking means coacting with said auxiliary frame structure for releasably locking the same to the main frame structure.
a main stationary mounted frame structure;
rotary guide means for guiding band material to be coated, said guide means including at least one deflector roller and being mounted on said main frame structure:
a coating assembly for coating the side of the band outwardly facing on said roller, said assembly in-cluding a fountain roll for supplying coating material, a metering roll and an applicator roll disposed in axially parallel relationship one with the other and the deflector roller;
an auxiliary frame structure supporting said coating assembly, said auxiliary frame structure including guide means for slidably guiding said coating assembly as a unit in the direction normal to the rotary axis of the deflector roller for selecting varying positions of said assembly relative to said roller;
guide means on said main frame structure slidably supporting said auxiliary frame structure for selectively displacing the same in the direction normal to the axis as a unit relative to the main structure and thus relative to the deflector roller;
drive means for moving said auxiliary frame structure into a predetermined position relative to the main frame structure; and locking means coacting with said auxiliary frame structure for releasably locking the same to the main frame structure.
2. A coating device in accordance with Claim 1 wherein said drive means comprise a cylinder-piston servo means, the cylinder of said means being mounted on said frame structure and the piston of said servo means being drivingly coupled with said auxiliary frame structure for displacing the same relative to the main frame structure by activating the servo means.
3. A coating device in accordance with Claim 1 wherein said locking means comprise coating clamping members on the main frame structure and the auxiliary frame structure for releasably clamping the auxiliary frame structure in a selected position to the main frame structure.
4. A coating device in accordance with Claim 3 wherein said clamping means comprise on one of the frame structures cylinder-piston servo means and linkage means coupled to the piston for controlling the position thereof in the cylinder and on the other frame structure retention means engaged with the linkage means in a predetermined position of said piston.
5. A coating device according to claim 1 and comprising second drive means for displacing said coating assembly relative to the auxiliary frame structure and thus relative to the selector roller.
6. A coating device according to claim 1 wherein said guide means on the auxiliary frame structure and on the main frame structure are linear guide means.
7. An installation for coating bands in continuous operation, said installation comprising in combination:
a plurality of coating devices as defined in claim 1;
a separate enclosure for each of said coating devices; and an air purifying assembly for each of said enclosures, for removing pollutants released by the coating material and entrained in air, each of said assemblies comprising pump means, burner means for burn-ing combustible pollutants entrained in air, drying means and conduits interconnecting each of said enclosures with said pump means, said drying means and said burner means for forcing air flow sequentially through the respective enclosure, burner means and drying means there-by purifying the air and discharge means for discharging the purified air for the enclosures into the atmosphere.
a plurality of coating devices as defined in claim 1;
a separate enclosure for each of said coating devices; and an air purifying assembly for each of said enclosures, for removing pollutants released by the coating material and entrained in air, each of said assemblies comprising pump means, burner means for burn-ing combustible pollutants entrained in air, drying means and conduits interconnecting each of said enclosures with said pump means, said drying means and said burner means for forcing air flow sequentially through the respective enclosure, burner means and drying means there-by purifying the air and discharge means for discharging the purified air for the enclosures into the atmosphere.
8. An installation in accordance with claim 7 and comprising in each of said assemblies after-burner means interposed between said drying means and discharge means for discharging air into the atmosphere.
9. An installation in accordance with claim 7 wherein said enclo-sures are disposed in superimposition.
10. An installation in accordance with claim 9 wherein said conduits are disposed in mutually parallel relationship with and between the super-imposed enclosures.
11. An installation in accordance with claim 7 and comprising heat-exchanger means for each of said assemblies, each of said heat-exchanger means being included in the respective conduits.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2343431A DE2343431C3 (en) | 1973-08-29 | 1973-08-29 | Device for the continuous coating of strip-shaped material to be treated |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1044458A true CA1044458A (en) | 1978-12-19 |
Family
ID=5890966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA208,029A Expired CA1044458A (en) | 1973-08-29 | 1974-08-28 | Device for coating strip material in continuous operation |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3916824A (en) |
| CA (1) | CA1044458A (en) |
| DE (1) | DE2343431C3 (en) |
| FR (1) | FR2242159B3 (en) |
| GB (1) | GB1437589A (en) |
| SU (1) | SU527130A3 (en) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2807333C2 (en) * | 1978-02-21 | 1984-04-05 | Kurt G. Dipl.-Ing. Hinterkopf (FH), 7332 Eislingen | Device for setting a printing mechanism |
| DE2932472C2 (en) * | 1979-08-10 | 1982-04-15 | Estel Hoesch Werke Ag, 4600 Dortmund | Coating device for strip-shaped material |
| EP0024029B1 (en) * | 1979-08-10 | 1982-10-27 | Hoesch Aktiengesellschaft | Apparatus for coating striplike material, particularly strip metal |
| DE3249757C2 (en) * | 1982-07-30 | 1989-07-13 | Hinterkopf Gmbh, 7332 Eislingen, De | Device for adjusting a printing unit for printing on hollow bodies, such as tubes or the like |
| DE3228476A1 (en) | 1982-07-30 | 1984-02-09 | Kurt G. Dipl.-Ing. Hinterkopf (FH), 7332 Eislingen | Device for adjusting a block cylinder of a printing unit, e.g. for tube printing machines |
| DE3525743A1 (en) * | 1985-07-19 | 1987-01-29 | Werner Kroscky | Varnishing unit for an offset printing machine equipped with an imprinting unit |
| JPH02196642A (en) * | 1989-01-26 | 1990-08-03 | Mitsubishi Heavy Ind Ltd | Corrugating machine |
| US4934305A (en) * | 1989-06-13 | 1990-06-19 | Dahlgren International, Inc. | Retractable coater assembly including a coating blanket cylinder |
| US5178678A (en) * | 1989-06-13 | 1993-01-12 | Dahlgren International, Inc. | Retractable coater assembly including a coating blanket cylinder |
| KR920007701A (en) * | 1990-10-05 | 1992-05-27 | 이시다 아키라 | Roll coating equipment for forming thin film of uniform thickness |
| FI88063C (en) * | 1990-10-12 | 1993-03-25 | Valmet Paper Machinery Inc | Device for dosing of coating on a moving surface |
| IT1253804B (en) * | 1991-11-21 | 1995-08-23 | EQUIPMENT FOR THE AUTOMATIC REPLACEMENT OF EQUIPPED PRINTING UNITS (INKWELLS), IN PARTICULAR FLEXOGRAPHIC MACHINES. | |
| US5743964A (en) * | 1995-01-24 | 1998-04-28 | Fata Hunter, Inc. | Roll coating system |
| EP0736330A3 (en) * | 1995-04-07 | 1997-07-09 | Ltg Lufttechnische Gmbh | Coating apparatus |
| US6435086B1 (en) * | 1995-05-04 | 2002-08-20 | Howard W. DeMoore | Retractable inking/coating apparatus having ferris movement between printing units |
| US5960713A (en) * | 1995-05-04 | 1999-10-05 | Howard W. DeMoore | Retractable printing-coating unit operable on the plate and blanket cylinders simultaneously from the dampener side of the first printing unit or any consecutive printing unit or any rotary offset printing press |
| US5630363A (en) | 1995-08-14 | 1997-05-20 | Williamson Printing Corporation | Combined lithographic/flexographic printing apparatus and process |
| US5651316A (en) * | 1995-10-02 | 1997-07-29 | Howard W. DeMoore | Retractable printing/coating unit operable on the plate and blanket cylinders simultaneously from the dampener side of the first printing unit or any consecutive printing unit of any rotary offset printing press |
| US6272986B1 (en) | 1999-10-15 | 2001-08-14 | Howard W. DeMoore | Retractable impression cylinder inking/coating apparatus having ferris movement between printing units |
| EP1410849A1 (en) * | 2002-10-18 | 2004-04-21 | Solipat Ag | Treatment installation for webs comprising a modular device for applying fluids to webs |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2610411A (en) * | 1947-11-28 | 1952-09-16 | Marcus C Steese | Method of and apparatus for burning fumes |
| US3397675A (en) * | 1967-03-13 | 1968-08-20 | West Virginia Pulp & Paper Co | Coating apparatus |
| BE759791A (en) * | 1969-12-11 | 1971-06-03 | Agfa Gevaert Nv | INSTALLATION FOR ORDERING DIFFERENT LAYERS |
-
1973
- 1973-08-29 DE DE2343431A patent/DE2343431C3/en not_active Expired
-
1974
- 1974-08-19 FR FR7428408A patent/FR2242159B3/fr not_active Expired
- 1974-08-22 GB GB3689674A patent/GB1437589A/en not_active Expired
- 1974-08-23 US US500073A patent/US3916824A/en not_active Expired - Lifetime
- 1974-08-27 SU SU2056546A patent/SU527130A3/en active
- 1974-08-28 CA CA208,029A patent/CA1044458A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2343431A1 (en) | 1975-03-20 |
| FR2242159A1 (en) | 1975-03-28 |
| FR2242159B3 (en) | 1977-06-10 |
| DE2343431C3 (en) | 1979-04-19 |
| GB1437589A (en) | 1976-05-26 |
| SU527130A3 (en) | 1976-08-30 |
| DE2343431B2 (en) | 1977-03-03 |
| US3916824A (en) | 1975-11-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1044458A (en) | Device for coating strip material in continuous operation | |
| EP0477283B1 (en) | Retractable coater assembly including a coating blanket cylinder | |
| US4397237A (en) | Roller train structure for use with printing machine | |
| CA1118194A (en) | Printing coater | |
| US5966836A (en) | Infrared heating apparatus and method for a printing press | |
| US5476546A (en) | Apparatus for applying lubricant pattern to a sheet work piece | |
| CA2227698C (en) | Apparatus and method for drying a discontinuous or continuous substrate fed along a feed path of an offset press | |
| US6038972A (en) | Quick change system for a press | |
| US5259313A (en) | Method and apparatus for cleaning an inking mechanism and/or a printing mechanism in printing units of rotary printing machines | |
| RU2075569C1 (en) | Plant for applying coating of tar and/or bitumen with glass fiber | |
| CN1500633A (en) | cleaning method of detachable inking device for a flexographic printing machine | |
| US9539785B2 (en) | Box making machines | |
| EP0186193A2 (en) | Gravure printing system | |
| US4026210A (en) | Printing apparatus and method | |
| US5107790A (en) | Two headed coater | |
| FI110497B (en) | rotary press | |
| US7963226B2 (en) | Method for operating a printing unit having at least one press unit, and a press unit for carrying out the method | |
| US4441418A (en) | Overvarnish apparatus for decorator machine | |
| CN113453904A (en) | Shipping carriage for a roller of a printing unit in a printing machine | |
| EP0041482A1 (en) | Equipment to spread glues or paints on continuously feeded sheet materials | |
| US5347726A (en) | Method for reducing chill roll condensation | |
| JP4711495B2 (en) | Coating device | |
| WO2006036731A2 (en) | Portable printer coater | |
| CN1289294A (en) | Method and device for stepwise printing of a continuous material web | |
| JP2006159668A (en) | Combination type trestle of ultraviolet light irradiating device |