CS244673B2 - Pressing apparatus in a machine formcigarette production - Google Patents

Abstract

In a printing device (1) of a cigarette manufacturing machine provision is made for at least one printing unit (5, 6) operating on a paper web (2), provided with a pair of rollers (11, 21; 12, 22) which are counter-rotating and substantially tangential to each other. One of these rollers (11, 12) - the printing roller - peripherally communicates with ink dispensing means, while the other roller (21, 22) - the contrast or opposition roller - is carried by movable support means (27, 28). Actuator means (37) is provided, coupled to control means (39) for sensing the integrity of the web (2), operably connected to the movable support means (27, 28) for causing the mutual spacing of the rollers in each pair upon occurrence of web breakages. Alternatively, the rollers 21, 22 may be fixed, and the rollers 11, 12 movable. The printing device(s) may apply ink or may apply adhesive which is subsequently bronzed. <IMAGE>

Description

The invention relates to a printing device in a cigarette manufacturing machine.

It is known that cigarettes are usually provided with inscriptions or symbols that are printed on a strip of cigarette paper in cigarette making machines and machines. The devices used for this purpose comprise printing rollers provided with printing pads. Each of the printing cylinders, the number of which corresponds to the number of colors in which the inscriptions or symbols are printed, is complemented by a corresponding support roller positioned on the opposite side of the paper web.

In case of accidental breakage of the paper web in front of the said pair of rollers, the cigarette making machine stops immediately, but the support rollers come into contact with the corresponding printing rollers, become contaminated with paint and must be removed manually before the machine is restarted .

Uve ^d en ^inadequacies ODS-ANUJ according VYN ^á climbing, t ^and with ^the AC ^and zařhení in a machine for manufacturing ^or gare ^{t of} ahrnují ^Affairs At ^least pairs ^{and Al} Cu sestávaj ^s c ^s of ^those bound ^{larger-véftce} azo ^p ěrného rolls located opposite each other, and means for feeding a strip of cigarette paper _in its in ^d ene ^and between, v ^and LCI, its ^Z after ^d s ^t a ^t ou is that at least the ^d eN ^and LEC of the above, the rollers is stored ^TOWING on a movable support connected to a transport means and movable between a first position at which ^iz is thrust in ^and LEC op ^I, R o ^p rotilehlý ^those of ^{the AC} current ^and LEC ^d Vojice and ^d ruhou ^p olo ^h ou therein ^wherein the thrust roller is pushed away from the opposite printing roller, wherein the shifting means is connected to an actuating device located upstream of said pair of rollers, comprising a cigarette paper continuity sensor and a shifting means actuating means.

Such ^{solutions é} blurred amortized that ^Currently the bagging machine stoppage ^{also d} e Cylinder displacement from each other so that there can be no contact between them and hence to pollution backup roll printing cylinder. Thus, the need for prior cleaning of the support rollers prior to each start of the machine after a breakage in the paper web is avoided.

The movable carriers are preferably constituted by a crank lever mounted on a fixed axis, one arm of which bears a corresponding cylinder at its end and the other arm is connected to the displacement means.

The displacement means may comprise an electromagnet, a pneumatic cylinder or a hydraulic cylinder as a means for performing the actual displacement.

The control device is preferably of the electro-optical type.

According to a further feature of the invention, the printing cylinder is in circumferential connection with the ink application means. Likewise, according to a further feature of the invention, the printing cylinder may be in peripheral connection with the adhesive coating means.

The invention is illustrated by the following examples in the following description with reference to the ^accompanying Ojén above ^the RES is ^H Oz is another of ^{d b} Rázek znázorauje schematically ^p of manufacture ^to perform la ^{d d d} en Uekacího device according to the invention.

The printing device 1 forming part of a cigarette manufacturing machine (not shown) is apparent from the drawing. A web 2 of paper material enters the machine and is guided around the transport roller 2 around the transport roller 2 rotatably mounted about the horizontal axis A. a cylinder / which is rotatably supported on the g-axis parallel to the axis D.

At the outlet of the device 1, a tension means for the belt 2 is provided, comprising a pair of tension rollers driven in a manner not shown. Said printing units 6 and 6, intended to carry out respective prints on the strip 2 in different colors, comprise each printing roller 41, 12 supported and rotated by a respective shaft 13 'or 14 parallel to the shaft A and provided with printing pads on the periphery. , 15 or 16 positioned in stejzýeh vzáje3 mrtfah dstupech ^on and reproducing ^from each of No. ^l or text to be printed. As the rollers 44 and 12 rotate, the print pads 15 and 16 gradually come into contact with the periphery of the respective dyeing rollers 17 and U3, which substantially touches the corresponding roller 11, 12 and is driven by the corresponding shaft 19 and 20. 17 and 18 is covered with a thin layer of ink which is continuously applied by a known type of baking agent (not shown).

The strip 2 ΰθ is kept in contact with the printing rollers 11 and 12 by means of the corresponding support rollers 21 and 24 volně loosely supported on the corresponding shafts 23 and 24 uspořád arranged parallel to the shafts H and H. and 26_PohýBlivých carriers 2J, 28 double-armed angle levers rotatably stored to come up ^with n ^g c ^{h p} e ^p ec ^h 22 and JO, parallelepiped-NYCHA with the ^{rotary shaft e, if} JJ and 14 · stubs 22 and ³⁰ are supported by ^Y neznázoeněnou bedplate packaging machinery·

The second arms 11 and 11 of the knuckle levers of the movable carriers 27 and 28 are connected by a corresponding coupling 11 and 34 to the opposite ends of the horizontal bar 35; _{e The} central region of this horizontal bar 11 is integrally connected to the armature 36 of the shifting means 37 in the form of an electromagnet carried by said base plate. The electromagnet operates in a vertical direction and is connected to an amplifier J8 whose input is connected to the sensor 42 part of .39 control unit ·

The control ^Aad ac ^{on machines í} J2 · ^kt ns is ^d n ^s MP ^of Ikla ^d e ^p rove ^d en ^s to ^{Y is N,} climb ele ^to Troo ^p tick ^é it "type, is disposed on the path of the strip 2 before printing device 1 and consists of an encoder 42 related ^l ost ^and p ^and are ^C gare ^t s ^eh of pa ^pi ru ov ^ dactoo ^p rost ^of e ^d to ^{43 p} osouvac ^¹H o ^p rost ^of e ^d to, sensor 42 comprises a photoemission The photoreceptor element 41 is coupled to said amplifier 38 and acts upon it to energize the electromagnet of the shifting means 37 when light radiation from the photoemission element 40 strikes upon them after the strip 2 breaks. The connection is made via a switch which, after activation of the photoreceptor element 4J, closes and acts as a control means 43 of the shifting means 11.

The actuation of the electromagnet of the shifting means 37 causes the stroke of the rod 35 and consequently the rotation of the cranked levers of the movable carriers 27 and 28 ⁸ . the levers of the movable carrier 27 in a clockwise direction and the levers of the movable carrier 28 in an anti-clockwise direction around the respective pins 29 and 30. As a result, the respective support rollers 21 and 22 are immediately moved away from the printing rollers U and 12. contamination of the support rollers 21 and 22 · projak

Without changing the principle of the invention it is possible to make a number of variations of the exemplary printing device guide described above. The printing units may be in the device in a different number than the above, and the respective support rollers may be connected to one or video controllers connected to the control device 32. be other than electromagnetic type, for example based on pneumatic or hydraulic cylinders, and ^d may be controlled only ^{at the} service of ^the NE ^p ERN roll ^{E b} uS p mo ^{of manufacture, or} other ^ki nematic system ^for ou ^ not ^from what has been described ·

The abovementioned possibility of securing the spacing of the support rollers from the printing rollers can also be used in printing units, generally called bronzing units, to print numbers or patterns of metallic appearance on strip 2. In such printing units, printing pads apply traces of glue on the strip 2 which have a tisloioist and then a fine metal powder is adhered to these traces. In such a case, the backing-up of the backing roll in case of belt 2 breaks down to avoid contamination of the backing roll with adhesive

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Finally, it should also be noted that the described means for moving away from the printing rollers can also be used such that, in the event of the belt 2 breaking, the roller is from the fixed support roller. Adjustment device according to the invention ^at pH ^p Z ^ A ^de JME, ^and neither Roto ^P oct ^asks no need for it particularly efficacious in Světlov ^y.

Claims (8)

backup rolls pushes the block ^to its electrical supply and ^t First printing mechanism in a cigarette making machine, comprising at least consisting of a printing roller and a backup roller disposed opposite each ^p r ^{i s} implementing belt cigaretovéta ^p and ^p ro ^p IRU and the friction between the ^d Val cl, indicate ^ en ^ . Hm, ^f e ^p o ales ^least one roller (21,22) of said rolls (21,11,22,12) is mounted on a carriage (27, 28) connected to a transport means (37) and movable between a first position in which the backing roller (21, 22) is supported on the opposing printing roller (11, 12) of the pair and a second position in which the backing roller (21, 22) is moved away from the opposite printing roller (11, 12), the shifting means (37) is coupled to an actuating device (39) located upstream of said pair of rollers (21,11,22 (12)), including a cigarette paper web connection sensor (42) and a shifting means (37) actuating means (43) ). one pair of rollers and means for A printing device according to claim 1, characterized in that the movable carriers (27, 28) consist of a crank lever mounted on a fixed axis (29, 30), one arm (25, 26) of which carries a corresponding cylinder at its end. (21, 22), and the second arm (31, 32) is coupled to the displacement means (37). 3. The printing device contains an electromagnet. under point or 2, characterized in that the displacement means (37) 4. The printing apparatus comprises a pneumatic cylinder. under point or 2, characterized in that after the threading. p ro Wednesday (37) 5. The printing apparatus of the invention comprises a hydraulic cylinder. or 2, characterized in that the displacement means (37) 6. Printing equipment according to optical type. point 1, characterized in that the control device (39) is elekito 7. The printing device according to you joins the spot color coating agent 1, characterized in that the printing cylinder (11, 12) is V 'perimeter. 8. The printing apparatus of claims 1 to 7, characterized in circumferential connection with the adhesive coating means. in that the printing cylinder (11, 12) is a drawing