US2610577A - Screen printing machine - Google Patents

Description

Sept. 16, 1952 c. A. HEINTcsEs 2,610,577

SCREEN PRINTING MACHINE l vFiled oct. s, 1949 e sheets-snee; 1

in l

Sqeptl 16, 1952 c. A. HEINTGES 2,510,577

' SCREEN PRINTING MACHINE Filed oct. s, 1949 y e sheets-sheet 2 llllllln 5m INVENToR.'

BY.' @Waww v Sept. 16, 1952 Filed Ovt. 5, 1949 c. A. HEiNTGEs 2,610,577

l SCREEN PRINTING MACHINE 6 Sheets-Sheet I5 ATTORNEYS BY ue,

C. A. HEINTGES SCREEN PRINTING MACHINE Sept. 16, 1952 6 Sheets-Sheet 4 Filed OGl'.. 5, 1949 INV ENTOR:

E' Yf @e WV? ATTORNEYS Sept. 16, 1952 c. A. HEINTGEs l 2,510,577

SCREEN PRINTING MACHINE;

Filed Oct. 5, 1949 n 6 Sheets-Sheet 5 I`NVENTOR:

"m/ WSI/@974 ATTORNEYJ.

Sept. 16, 1952 c. A.v HEINTGEs scREEN PRINTING MACHINE 6 Sheets-Sheet 6 Filed OCT.. 3, 1949 @mlm INVENTOR: www@ By: @may W19 M Patented Sept. 16, 1.952

. Y' Clemens AntonHelintgfes, Uddevalla,l Sweden, assignor to Aktiebolaget TeXimDemGOthenburg-i Sweden, acorporatio'n of Sweden "Y printing machines,wh erein the vstencils are arranged lin' :ar ria .ges., or the like, which are stored abovey each other. in `one;`or lrnore magazines adapted fw. be raised-@11d loweredand the, ar.-

rangement `in consideration'vis, principally disi tinguishedv-by the.4 featurethat the magazine is.

adaptedto be moved in thevertical direction with thev vaid' of electric motor, for4 example,- means beingalso` .provided to Ibring .about a stepwise displacement at least at the'movement of the magazine inlone direction so that the carriages placed ontopof each other are brought' to a standstill one after the other on a level with a track, or the like for the carriages arranged transversely .overV ai printing table. -f Y The accompanying drawings lillustrate a few examplesv ofv embodiment of .the invention. Fig.

1 is ,a perspective fviewof la magazine arranged in accordance'with the invention. Fig- 2 shows a detail of the arrangement according to Fig. '.1-1 in elevation. Eig. 3 is a diagrammaticrepresenta- Application october` s, 1949,"ser4ia1Na 119,265 1, .15, inSweden October 5, 1248 l li Iii-fthe. embodiment tionof a locking device comprised inthe arranger v ment according'to Fig.' '1 [Figsffll show a fur-l therembodixnent of the'finventionli l jengns. nig? with its' continuation Fi'gfiaiis an'felevation ,of a printing, tableassoc'iated with' thejarrang'ement shown .in Figs. 4,-6. Fig. 8 with its",continuation4 8a is afplanview of the printing table according Vto Fi'ggl'l.

to be raised and loweredas 'a lift-cage, `said magazine being guidedvbyjmea'n's' of guides 3 equipped withja plurality ofpairs 'of rails orthe like 4 ar'- ranged above eachother;carriage s 5 being displaceably arrangedvon ,Sd'railsf The carriages 5 have stencils# arranged fth'ereon known man ner, each of vsaid;stencils v,correspondirlg toA a.' certaincolors lntlijejexamploshown, the magazine contains veight lcarriagesy which p thus; rendersprintingAv possiblefwith eight color's'.` i'

In'Fig. 1, jnumeral I designates' 'a'.'frame`, and; 30 arranged in'this frameis a' magazine 2 adapted- Secured to thenpper borders 'of the magazine 2 are ropesfB running over 'guide pulleys ..1,8 a 'd' Carrying .Counterwsghts 19;? one on; @ach Side gf the-magazine. ,-rrovidesfaiongsidex of twg; ops-$5 posed vsides of the magaziner are vertical racks Ill'l cooperating with gear wheels, which 'latter vare not shown here, and which are drivenY over a shaft II and chains I2 by meansof` an` electric motor I3,'a-s'uitab1e gearing I4fbeing provided between the motorQ I3 andthe shaft I I. Fig. 1 also' diagrammatically 'indicates a printing table I5 "with rails I6, on-which the carriages 5 are intended to run y when'withdrawn; out of the 'M magazine.

vThe locking rdevice'proper Iis showndiagraxnmatically in Fig'. 3 and comprises a locking memberV I'I engaging the lower sides of the rails 4 in the magazine. The locking member 'I 1 is retained in locking position byV aspring lan'dnmay .be withdrawn from vthis .position withtheaidof an electromagnet' I9. fIn Ythe .examples shown,l the locking-device is enclosed withina casing '2|l -J ,As will appear from Fig. V2,.the 'locking-device@ 20'is;connected by means of wires'2IA to `a contact device 22, .which for the `sake of simplicity is shown in the .iform of twoffcontact members 23 and'24, of which the latter is resilient soas normally to be kept in its open position. When4 the carriage 5`is moved into the magazine from"v the-table; I5, the left end of the Vcarriage in the gure will strike against `the contact member 24,

so that the circuit is closed'and the locking device disengaged, The magazine-2Y will thusfall down by its own weight;v arranged Ion top of each other are guided inthe horizontal direction by a vertical rail 25 whichr f approximately on a level with the table I15has an outwardly curved portion 26 so that the contact member '2li becomes accessible to themoved-in carriage, Now, when the magazine Adescends byv reason of the withdrawal `of the locking member' II-,V-sad carriage will be moved-backforA a'disj-;, ;f tance so as .to take a normal position` in align'- ment with the ',othercarriages, the contact between the members 23 and 24Y being thus .inter.

rupted. LI-iereby the locking member I'I will again bev movedinto its lockingposition so that'4 the fmagazine will bestopped lby lthe engagement ,okff, the locking member I'I with the lower side of the rail 4 next.above.- lThe-coloring of thejprinting material .with the color in [question having Vbeen Y finished, the cycle ofn operations willbe repeated whenfthe carriage running on said rail isvmovedf` The magazine WiIljthusber into the magazine. moved downwardly in a stepwise fashion f When'all of-.the stencils in the magazinehave i beenused andthe magazine'takes its lowermost position, a. contact for .the .motor I3 isactuated, so that the motor will raisethe `magazine into its initial position topmost in vthefraxnel3`- In the example shown, the locking member I'I isfb'evelled je off on the lowermside thereof, so as to vbe autoY matically displaced by the rails 4 when rthefmaga zine moves upwardly, but it is evidently possible-...

according `.toI Figr 1, .the counterweights Sare somewhat lighterethan thei filled4 magazinev 2 which consequently tendsl to f descend. On account thereof therek is provided a lockingfdevice arranged in accordance with However; the carriages '5 I to keep the circuit through the electromagnet I 9 closed by means of a special contact device so that the'locking plunger will be kept away all the time.

The starting of the motor I3 may be effected automatically Aat the lowering of the magazine to its bottom position, a contact devicebeing thus actuated, which also breaks the current when the pairs on two shafts |04. The shaftsv |04 are interconnected by means of a chain |05. One of the shafts |04 carries a sprocket wheel for a chainV |06 connecting the shaft with an operating lever |07.

Arranged on the printing base are two pins |08 engaging adjusted apertures or the like in the carriages 54, so that all of the carriages are magazine reaches its topmost position, but it is also conceivable to make use of a` manually operable switch.

In the embodiment according to Figs. 4-6 there are two magazines 52 located on both'sides ofl a printing table 65, which is diagrammatically in! dicated in Fig. 4. In this case, the two magazines are interconnected by means of ropes 55, in a manner such thatone of the magazines is raised, when the other one is lowered. The ropes 56 are lengthened, approximately at the middle thereof, by means of a drivingchain 80 running over guide rollers 8| and a pinion 82,;which isj driven over agearing 03, not showniin detail,

by means of an electric'rnotor` |50v with the aid of abelt drive 85.

eachfgmagazine contains eight carriages, which' A contact Adevice pertaining" to.- the motor is also combined with thegear-ing 83,

renders printing fwithsixteen colors possible'.V

For each displacement of the magazines, printing'.

maybe effected ,withftwo colors, that is to say with one stencil from each magazine.'

Fig. 7-7a Vshow a print'ingtablev adapted to be placed between the two magazines Yin-Fig's. y4 6. The printing base is designated by 65, and run-y ning over this'base isfan endless rubber web 90,

which may-be given the desired tension by means'` of displa'ceable guide rollers 9|.v At one end of the' printing base 65 is provided a diagrammatically indicated receptacle 92 having'a roller 93 c arranged therein, which is in contact with afurther roller '94, which in turn bears oil-'the rubber I web 901|.v The receptacle 02 contains an adhesive, which is'applied by the rollers 93 and 94 in a suitable quantity onto the surface of the rubbery web 90, so thatthe fabric unwound from a roll 95 and to be'fprinted upon will be safelysecured to thewebf n l The `rubber web 00 is adapted `to be fed in a stepwise fashion with the aid' 4ofa diagrammatically indicated electricl motor B6, from which the power is transmitted over av suitable gearing onto a guide rller'l. Coupled to this rolleris a cle- ,Y

vice comprising a rack 93 and a friction couplingk contrivance, not shown in detail here, for avuto-Y mati'cally limiting the feedingv length of the tex#Vv tilematerial. A l

As indicated by chain-dotted lines, the printed fabric |00is carried from the printing table into Y a. diagrammatically indicated drying apparatus |0|,- iri 'order then Ato be Wound onto a roll or to be folded in the ordinary manner.

Extending transversely over the printing base'V 65 are two rails B6 for the carriages 54. .These rails 65 are'supported by vertically displaceable bars |02,"'which ,are adapted tobe raised and loweredby means of fourcarns |03 arranged in brought into exactly the same position when lowered toward the printing base 65. In Fig. '7, ||8 denotes a lever for the disengagement rof the motor 96 after the rubber webr90 has been fed 'forward for theintended distance.

Figs. 8-8a represent a plan view of the printing table according` to Fig. 7, where the various details have been designated by the same reference numerals as in the latter figure. Fig. 8 also shows a motor-driven device for moving the carriages out of and into the magazines. In the examples shown, the displacement'of the tear# riages is eifected with theV aid of pressure me-V dium plungers'arranged in cylindersV I0. These cylinders have a length corresponding at least to the movement of the carriages' 5, and secured to" the endsV of the plunger rods of the same length are carriers |2 running on a rail H3., As will be seen from the figure, the carriages are provided with projections ||4 engaging vertical slots in the carriers |'|2, so thatv the 'projections ||4 on the carriages disposed on top of each other in the magazines may be moved into. and

out of said slot, when the carriers l2 are intheir positions of rest.

Each cylinder l0 is provided withtwo pipe A connections |5 for a pressure medium, and these pipe conduits may be alternately brought into communication with pressure and discharge cony duits by means of a suitable valve device for the purpose of effecting a displacement of the I plunger rods Through the meansdescribedA hereinb'efore, the manual work in textile printing of the V'type in i. consideration may beflimited .to Va minimumnnf'; asinuch as the displacement of the magazines.

as well as the movement of the carriages and the feeding of the fabric are effected by mechanical means. vAll operating levers and the like may be located immediately adjacent to the printersf-v platform, whichin Fig. 7 is designated by ||6,

the printing machine in consideration becoming Y thus very convenient. to handle.

Even if the arrangement according to the inv-I vention primarily refers to the'printing oftextiles, it is obviously also suited for printing of. paper and the like,fsuch' aswallfpaper. `In the embodiments described the Vdisplacement of the magazines is-eifected with the aid of anelectric motor, but it is also conceivable tcmake use of other motors such as hydraulic .or pneumaticv motors. Analogously, the pressure mediumvop-V erated plungers for the displacement of the car-f riages may be replaced, for instance, by electric motors with ropes, racks or the like forl the transmission of the movement to the carriages. The

with mechanicalV machine Vmay valso be provided squeegeeing means.

What I claim is: l n l. A screen printing machinecomprising a carriage for a screen printing frame mounted on each pair of guide rails in said magazine and adapted to be withdrawn therefrom and returnedV thereto individually along a horizontal path, a

an upstanding frame, a magazine vertically guidedY in said frame including a plurality of vertically spaced pairs of horizontally aligned guide rails,`

printing table adjacent said upstanding frame and including spaced guide rails positioned for end to end alignment with the respective pairs of guide rails in said magazine to receive the carriages from said magazine in succession upon vertical shifting of said magazine to positions to align the guide rails thereof with the guide rails on said printing table, means-including an electric motor in driving engagement with said magazine and a counterweight at least partially counterbalancing the loaded weight thereof for eiecting vertical movement thereof in said frame and the step by step successive alignment of the respective pairs of guide rails thereof with the guiderails on said printing table in succession, a retractable latch member engageable with spaced abutments on said magazine for locking the same in positions of alignment of the guide rails thereof withV the guide rails on'said printing table and means for retracting Vsaid latch means actuated by said carriages upon return thereof to stored position in said magazine after each printing operation to release said magazine for movement to bring the next pair of guide Vrails into position in alignment with said guide rails on said table.

2. A screen printing machine according to claim l including a vertically disposed guide rail carried by said frame and engaged by said carriages in said magazine to limit the movement thereof into the carriage, said guide rail having a recessed portion opposite the position of a carriage when in position of alignment with the guide rails on said table to permit return movement of a carriage past the normal positionvoccupiedby the remainder of the carriages lin the magazine upon return thereof from the printing position, and entry into said recessedportion, a control switch actuated by a carriage entering said recessed portion of said guide rail for retracting said latch means to release said magazine, and a cam surface on said guiderail for shifting said last mentioned carriage to no rmal position to disengage said switch upon movement of said magazine.

3. A screen printing machine comprising two upstanding frames, a magazine vertically guided in each frame, each magazine including a plurality of vertically spaced pairs of horizontally aligned guide rails, a carriage for a screen printing frame mounted on each pair of guide rails in each magazine and adapted to be Withdrawn therefrom and returned thereto individually along a horizontal path, a printing table between said fram-es, said table including spaced guide rails positioned for end to end alignment with the respective pairs of guide rails in said magazines to receive the carriages from said magazines in succession upon vertical shifting of said magazines to positions `to align the guide rails thereof with the guide rails on said printing table, flexible interconnected suspension means 6 for said magazines whereby one is elevated when the other is lowered and each constitutes a counterweight for counterbalancing the other and means including an electric motor in driving engagement with said magazines for effecting vertical movement thereof in said frames and the step by step successive alignment of the respective pairs of guide rails thereof with the guide rails on said printing table in succession.

4. A screen printing machine comprising an upstanding frame, a magazine vertically guided in said frame including a plurality of vertically spaced pairs of horizontally aligned guide rails, a carriage for a screen printing frame mounted on each pair of guide rails in said magazine and adapted to be withdrawn therefrom and returned thereto individually along a horizontal path, a printing table adjacent said upstanding frame and including spaced guide rails positioned for end to endalignment with the respective pairs of guide rails in said magazine to receive the carriages from said magazine in succession upon vertical shifting of said magazine topositions to align the guide rails thereof with the guide rails on said printing table, means including an electric motor in driving engagement with said magazine and a counterweight at least partially counterbalancing the loaded Weight thereof for eiecting vertical movement thereof in said frame and the step by step successive alignment of the respective pairs of guide rails thereof with the guide rails on said printing table in succession, a guide bar extending across said printing table adjacent and parallel to one of the carriage receiving guide rails thereof, a motor REFERENCES CITED The following references are of record in the ille of this patent:

UNITED STATES PATENTS Number Name Date 2,458,773 Foard Jan. 11, 1949 FOREIGN PATENTS Number Country Date '711,291 Germany Sept. 29, 1941

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