DE2205714C2 - Device for cutting off individual sections, each corresponding to a tab, from a tab material supplied in the form of a continuous belt for the production of endless sets of forms - Google Patents

Description

The invention relates to a device for cutting off individual ones, each corresponding to a tab Shading of a tab material fed in the form of a continuous band for the production of endless forms set, whereby the belt is driven by a feed roller around one of the flap width or length corresponding amount by a one-sided limited by a fixed lower knife Slot-like opening can be advanced, in front of which a depending on the advancing movement the to be bound ^ form set tracks controlled upper knife moving is arranged.

Such a S "id device is used as part of a device for independently connecting iTK.irerer superimposed webs to form sets or the like by means of small bow-like tabs, as described for example in German Patent 1436 814 . This cutter cuts the individual tabs from the continuous zjgeführten tape and places them on predetermined perforations of each overlying sheets so that the covering perforations in a subsequent station, which are supplied to the webs at ^c "hließend, initially lying flat tabs can be folded through the perforations in a bow-like manner and glued at the end to the respective upper and lower web. The thus folded and glued bow-like tabs then cause an elastic connection of the taps of the form set, they vie required, schriftung a proper handling of the Formula l and ^r u sets in the associated typewriters. The like to be ensured..

Since the individual tabs must each have the same width and also be uniform and duly placed on the predetermined perforations of the webs, the accuracy and operational safety of the cutting device are relatively high demands !. Here it is necessary that each free end of the tape through the slot-like bordered by the lower cutter Opening around a width corresponding to a lens Amount and the tape feed during the cutting movement of the upper knife interrupted in order to compress or tear

to prevent the tape from growing in the area of the interface. In the known device this is achieved in such a way that the transporting the tape

Feed roller is driven intermittently, the-

way that the feed roller during cutting

movement of the upper knife stands still and only in the

Is driven by periods of time in which the free belt

end: by the released by the upper knife slot-like opening around the width or length of a

Tab should be advanced. The = .ermkUe-

rende drive of the feed roller of the tape happens over a freewheel, the inevitable dependency from the eccentric drive -les upper knife

is eestluert and .rdnet which a brake to _e, the

the feed continues to run after switching off of the drive ver! In the?

The maximum Arbeitsg-.wmdigkeit of the known cutting device - ^ J with it the whole, the
The connection of the one: ', ..
shows, limited by the fact that the freewheel has an excellent the correct maximum switching frequency, becomes ^ ¹ ?!

If this limit value is exceeded, the training equally wide, properly trimmed h d d kt Afl f the perfora

achieve essential,

^a "

Tape about the

stands. As the P ^r

deal with the new

borrowed control ^^ speed

even at the highest level of work _training

the flawless, exactly the same width, brackets B ^ewa «™« ^ ' ^SL
In a ^b ^ ° ™ ^
Arrangement such g
push roller to a ^ 'storage unit
that about an acte "tion of the allelic axis; ^c
load-bearing
Movement of the
Teilhifter ™ ► £
load-bearing spring-loaded bearings ^

l ^ t ZZ VoSubrolle bearing

house-like

Lg. ⁸ _{from the} stock part

forms, wöbe, he ^ ζ ^^ _nden knife ^{bowOb Γ} ^ „^ _lay he be

/ - _and movable load and the

_n gsform can the Zl that the Vor _is ,

o _sser

° _{gert isl} . The f _ht hereby

Jf feed roller d * ^

both elements. ° ^e _{one in} the? ^ Actuating plunger to ^ by spring force against a circumferential end formed in V

dung of equal width, order ^c according to truncated gen isi. uauuiui, v ^ «v. ™ Obermesser Lrschen and their exact placement on the perforated printing sterile in fixed mutual assignment to nationeu can no longer be guaranteed. Not '- -' + 1 * riieser two elements Henden lower blade Furthermore ^a5 the cutter bar to sit, there is a se ir em ■ st the setting of the upper blade to the festste- '"""* ■■ ·" • "' easy enough possible.

The invention is therefore based on the object of creating a cutting device of the type mentioned at the outset which, with a simple, operationally ³ ° shape of a safe structure, significantly increases the Ar- ^XT '""
working speed compared to known cutting devices of this type permitted.

To solve this problem is the cutting device ^ ". __ _D
device according to the invention, characterized in that ³³ controlled actuation

that the continuously driven feed roller

by one in a fixed inevitable dependence on

the lifting movement of the upper knife controlled Ee-

movement mechanism under advance of the free

Tape end around one of a flap to be cut off '

^do g ser

Cutting device

Eccentric drive for the upper knife has the upper knife, which cooperates groove. The "ll curve for movement is a larger equal _{measure" 5auio} Isa. Particularly easy if the cam surface

^ p ^ eVden "B" e-trag "through the slit-like öff-: ur ^^^ ΖΊ ^ Χί ^ η ^^ · nung on the lower knife to be anticipated and arranged by the ^iai * ^u 'ZtTxiJ _P \\ l' and the cam time punk, the impingement of the outer cutter to the J ^^^ SISS ^ dei bearing part in Achsjeweils in tab width to be cut off tape to ^{fl. a} *% fi _r S ^ Skt Here, the Vorschubiis for reproducing the jagged opening ^^^ _of the common by the upper knife after cutting off a ^ S .. rfpr cam surface and the cam track from the tab opposite to the transport direction d-.s Ban- ^ "fJ ' ¹ ^ -

of the lower knife without shifting the ^at f ^ ^ne "" _ache adjustment of the upper knife

BanJ-s can be moved back steadily ^: st. uj ^ '- ch de <lower knife, it is

The fact that with the ntütn Schneidvornclaiug ^h ™ ^ _ft % arrangement to be made in such a way that the

laterally ee tneoen isi, enuaucn u ». um w ™ u ----

Drive the feed roller contiguous

The fact that at the ntasn snow g ^ to _such

the feed roller of the tape continu '^^ an- ^ S. guided cutter bar with respect to the fixed

drove isi, eniiaiicn the »· ϊί c; rc ... -.r.lsrvr. '. ilieret! en ' _r h _{ockes in the} Kichiung vertical zatr.

bll hanging hanging position ^ ° ^{c 5} _{a is arranged} . The Indian

^ JSThibHn at one with the Be

Drive of the feed roller zg ^ _{a is arranged} . Shift problems completely. The feed raw requests the ^ JSwnTvetKhiebHcn at one with the BeBand during the period in which dasOber- amplifier men ^ g _{NER shocks ko} pf stored i Lh d fren ^ S

^ 'fSk

ve

_{NER shocks ko} pf supported

can hereby screwed in from the outside by a Kanπ _{plunger head}

the ram head adjustable Vde

Band also during the period in ^

knife cuts off a tab from the fre.sn tape end, each of which is characterized by the

This moving away from the feed roller ^ £ J £ ^ cr the Stößelkp ensures that the belt in the area of the _fio ^Gcw '"f ^eSp _D ^^^ Jstattet it, through a simple twisting interface, is not exposed to any tensile force and also be b "^. ^ ^u _{d indel the} upper knife relative to a compression of the band in the regions of the cutting isi the excluded jewels racks ^h" "f J" _r Tntsprechend. Sow "the tab off _sc ^ ^^ NDDs _P a t set, cut and the slit-like opening of the to- ^^ z ^ unl is an execution example, 1 of the nodding upper knife ™ ^ ^ST J ™? ^ ™ *}: 65 _Ge "n _S 'andes of the invention shown. lis shows the imn - .. · continuously conveying feed roller ^Oe | ^enst J ⁿ ^ ^S device for automatic connection again on the lower knife se moved far forward that ζ ijg · ι c over _one another to form a tab width corresponding E-dpart of the menrcrcr u

rtiularsätze or the like. by means of a small bow-like La wave 18 of the feed roller i'7 parallel axis that see with two cutting devices according to the Er- is formed by a bolt 21 on the stand Finding in plan view, in a schematic representation 12 of the bearing block 11 is pivotably mounted. How out lung, Fi g. 6 to be seen, is the formed by the bolt 21-

Fig. 2 the form set of the device according to 5 dctc pivot axis approximately perpendicular at the distance above-Fig. I, cut along the line HH in FIG. so the feed roller 17 experiences a development towards the stationary lower cutter 13 or from it

3 shows a movement directed away according to the invention. With the bearing part 19 is Application in a view from the front, partly in the side facing away from the feed roller 17 Cut. Tension spring 22 connected to one side with

FIG. 4 combines the cutting device according to FIG. 3 in the stand 12 of the stationary bearing block 11 Side view and in detail, screwed spring abutments 23 in the form of a one

F i g. 5 the cutting device according to FIG. 3 in 15 have a corresponding suspension eyelet for the spring View from the back, in the cutout, the set screw anchored. The spring 22 is

6 the cutting device according to FIG. 3, partly strives to pivot the bearing part 19 so that the way in axial section in a side view, feed roller 17 from the fixed lower measuring

Fig. 7 the cutting device according to FIG. 3 in scr 13 is removed.

Cross section through the actuating plunger of the knife so the movement of the bearing part 19 occurs through bar in a view from the front and one arranged below the bearing block 11, on

F i g. 8 the cutter bar of the cutting device of a cam body 25 seated on a shaft 24 according to FIG. 3 in a plan view, in a single representation formed cam surface 26, which in the axial direction lung, on a different scale. the shaft 24 acts and against the one by means of a

In the case of the “5 B- 'zens 27 shown in a top view in FIG The device are laterally pressed on the edge of a pressure roller 28 by the spring 22 elastically feed mechanism, not shown, is steadily advancing.

The housing-like bearing part 19 has an opening

Endless form set 3 has two periodically acting 29 (F i g. 3), through which a substantially hori-cutting device 4 is arranged, the synchronous 30 zontal cutter bar 30 protrudes, the shape of which is driven to the web feed and through the individual from F i G. 8 can be seen and which on its front face of the front face of each in the form of a continuous strip carries the upper knife 15 and a tab material 31 for the cut tab that is supplied by a roll 5, sections corresponding to individual tabs 6 on two with the stationary separable and lying flat on individual vorbeslimmte 35 bearing block 11 rigidly connected guide arms 32 perforations 7 of the outer web 1 can be placed by means of needle bearings 33 and are displaceably guided. The cutting devices 4, connected by a ram head 34 (Fig. 6). Following the direction of movement of the path indicated by the arrow arrow, ßelkopf 34 is in turn connected to an actuating plunger on both sides of the form set 3 which is connected to 35, which carries a pressure roller 36 and tabs 6 placed under cutting devices 4 with 4 ° of the action of a compression spring 37, which is located gecinem end through the predetermined perforations a with the stator 12 connected to the stator 12 resilient stamp mechanisms 8 arranged, abutment in the form of an adjusting screw 38, each of which is assigned a pusher 9, which the compression spring 37 pushes the pressure roller 36 elastically through the perforations pushed-through tabs yieldable against a cam track 39 formed on the cam body 25 extending to the outer surface of the lowest 45, the shape of which presses track 2 in detail, whereupon in a subsequent status from FIG. 7 can be seen. On the Abbewetion and 10 ^beidse: tig of the form set 3, the tab supply of the actuating plunger 35 causing the cam member to the outer surfaces of the panels 1, 2 in the web 39 of a falling curve is formed in shape from F i g. 2 visible way are pressed. which has the advantage of more even movement

Each of the cutting devices 4 has a firmness.

standing bearing block 11, one of which is fixed with it. The cutter bar 30 is in particular off

associated stand 12 carries. In addition, the FIG. 6 and 7, a stationary lower cutter 13 screws onto the stationary lower cutter, the upper edge of which delimits a slot-like opening 14 (FIG. 9) pointing towards and away from it , in front of which an upper knife 55 is slidably guided, and is arranged to be movable up and down by one of 15 Underroll 17 adjustable through the slit-like opening 14 of each knife 13. By appropriately twisting a thickening of the threaded spindle 4 corresponding to the width of a tab 6, it is possible to advance the amount and then adjust the cutting gap between the lower cutter 13 and scr IS in cooperation with the lower cutter 13 and the upper cutter 14 by the upper knife 60,
cut off. The feed roller 17 is non-rotatable with the drive of the shaft 24 is not done by one

a shaft 18 connected, the ίο a housing-type drive source shown. Is rotatably mounted via a toothed bearing part 19 and on its belt drive 41 and a form-fitting gear 42 of the feed roller 17 facing away from the end of a toothed belt 65 that drives the feed roller 17 carries the toothed belt pulley 190, in which a toothed belt 20 20 directly with the drive shaft 24 is form-fitting - 'engages, which couples the feed roller 17 in rotation sig,
offset. The bearing part 19 is about one to the axis of the The device works as follows: The shaft

7 8

is inevitably dependent on the pre-can, but in the area of the interface pulling and pushing movement of the formal set cs3 (Fig. 1) is held free of angular pressure. They drove the upper knife. As a result, both the curved surface 26 acting in the axial direction 15, forming a shaft, and the tab 6 are cut off and the Schlillz-like opening curve path 39 is released again in an inevitable reciprocal upward stroke, is dependently set in rotation. The curve surface, the reversal of the pivoting movement of the 26, vcrscliwcnkt via the pressure roller 28, the bearing part. Lagcrleiles 19 and thus also the movement of the 19 periodically back and forth about the axis formed by the 'feed roller 17, the now on the locking bolt 21, while the cam track Unlcrmcsscr 13 is advanced ^ whereby it exercises the free 39: the pressure roller 36 and the ram 35 advances the end of the strip over the cutting edge of the lower cutter bar 30 and thus the upper cutter 15 and cutter 13. As soon as one of the B.citc moves the pusher 31 up and down over the cutting knife 13 with respect to the fixed un- a strap corresponding to the tape. As a result of the edge of the lower blade 13 protrudes, the pivoting movement of the bearing part 19 around the axis formed by the upper blade 15 comes into effect, while the horizontal axis formed in front of the bolt 21 leads the 15 feed roller 17 to its feed roller 17 from the lower blade 13 onto the lower blade 13 backward movement directed away begins,
and movement away from it. The inevitable dependency of the movement i'cr speed of the feed roller 17 continuously via the toothed belt 20 towards the lower cutter and from the continuously driven feed roller 17 is this way away from the stroke movement of the Oburmcssers on the stroke movement of the upper cutter 15 and 20 15 is ensures that both the cam causing the back and forth movement of the feed roller 17 to move the feed shaft S7 from about the point in time at which surface 26 and the lifting movement of the upper and upper cutter 15 act on that through the opening 14 messcrs 15 generating cam track 39 occurs in solid vortexed protruding end of the tape 16, the advantages gcnseitiger assignment on the common shaft thrust roller 17 of the lower knife '13 away overall 35 "*' are arranged in a rotationally fixed hers. As the feed roller directed movement begins. This is continuously driven by the lower 17, resulting in a knife-away directed movement ensures that it is very easy e drive ratios. The housing that is conveyed by the feed roller 17, which is preferably made of light metal, is preferably made of light metal. Finally, the entire device is not covered with the tape 16 at the interface between a dust-tight housing, of which 44 parts are visible when the upper knife and the lower knife accumulate.

For this purpose 3 sheets of drawings

109 681/34

Claims (9)

Patent claims: 1. Vorrichiung for cutting off individual, each a tab of corresponding portions of one in the form of a continuous band supplied flap material for the production of Endios form sets, whereby the tape is unilaterally driven by a feed roller by an amount corresponding to the strap width or length slot-like opening delimited by a fixed lower knife can be advanced. in front of the eir controlled as a function of the feed movement of the standard record paths to be bound Upper knife is movably arranged, d a characterized in that the continuously driven feed roller (17) by a fixed inevitable dependence on the lifting movement of the upper knife (15) controlled movement mechanism (19, 21, 28, 26) untei advance of the free end of the tape around a tab (6) to be cut off Amount through the slit-like opening on the lower knife (13) to and from The point at which the upper knife (13) hits the one to be cut off in the width of the tab Tape (16) until the slot-like opening (14) is released again by the outer knife (15) after cutting off a tab (6) against the transport direction of the edge (16) of the The lower knife (13) can be continuously moved back without moving the belt (16). 2. Apparatus according to claim 1, characterized in that the feed roller (17; on a η bearing part (19) is rotatably mounted, which is about a to the axial direction of the feed roller (17) parallel axis (21) pivotable on a stationary bearing block carrying the lower blade (13) (11) is stored. 3. Apparatus according to claim 2, characterized in that the one carrying the feed roller (17) spring-loaded bearing part (19) by a circumferential cam surface (26) around its pivot axis (21) can be pivoted back and forth. 4. Device according to one of the preceding claims, characterized in that the the The bearing part (19) carrying the feed roller (17) is designed like a housing and is made on one side the bearing part (19) protruding, the upper knife (15) supporting cutter bar (30) encloses, on the fixed bearing block (11) with respect to of the lower knife (13) aaf and ab is movably mounted. 5. Apparatus according to claim 4, characterized in that that the cutter bar (30) is guided in a displaceable manner in the bearing block (Ii) Actuating plunger (35) is connected, which by spring force against a in the form of a Fall curve formed circumferential cam track (39) is pressed. 6. Device according to claims 3 and 5, characterized in that the cam surface (26) for pivoting the bearing part (19) and the cam track moving the actuating tappet (35) (39) are arranged on a common shaft (24) and the cam surface (26) for The pivoting of the bearing part (19) in the axial direction of the shaft (24) acts. 7. Device according to claims 4 or 3, characterized in that the laterally gefühi te Cutter bar (30) with respect to the fixed bearing block (11) in the direction perpendicular to the Lower knife (13) is arranged to be adjustable. 8. Device according to claims 3 and 7, characterized in that the in the adjustment direction displaceable on a tappet head (34) connected to the actuating tappet (35) mounted cutter bar (30) by a rotatable from the outside and into the ram head (34) screwed in threaded spindle (40) is adjustable relative to the ram head (34). 9. Apparatus according to claim 6, characterized in that the feed roller (17) through a toothed belt (20) from the common shaft (24) of the cam surface (26) and the cam track (39) is powered off.