DE1561509B1 - Device for applying an adhesive strip to sheets - Google Patents

Description

I 561 509

1 2

The invention relates to a device for opening (Fig. 2) for separating the adhesive strips between bringing an adhesive strip onto sheets with a single consecutive sheet, a conveying device for transporting one after the other- device 210 for transporting the separated sheets through the device, with a Roller sheet and a dispensing section 52, which has means for applying the adhesive tape to 5, a sheet 46 and an end stop 48, a predetermined area of the sheet and with a spacer 390 (Fig. 8) is on the shaft of the cutting device for cutting off the adhesive tape roller 396 of the roller device and a guide finger fens. 340 on the shaft of the upper knife holder 288

Such a device is known (German (Fig. 2) of the cutting device arranged. Auslegeschrift 1 000 675). Behind the io is how best from FIG. 1 can be seen, two roller device are arranged a swivel knife, laterally running openings 72 and 74 in the vicinity which takes the rest position by a tension spring, the left end of a support plate 12 for the bow and against the action of this spring provided by hand inside the two Conveyor rollers 76 and the path of the adhesive tape is pivotable. Furthermore, 78 is rotatably mounted, which traes a conveyor belt 80 in a device for bordering 15 gene, which is placed around the rollers 76 and 78. Known from pieces of cardboard or the like (German patent conveyor belt is around two laterally running, vertical letters 574 609), drive rollers 82 and 84 arranged before the adhesive strip is applied, the correct strip length is automatically looped through a loop, each of which runs on the side Cut off white cutter. len 86 and 88 are attached. At the shaft 88 is

In contrast, the object is to also attach the adhesive drive disk 90 and provide it with strips after it has been applied to the sheet itself - a suitable drive belt 92 , which is actively and precisely cut off. This object is between the drive pulley 90 and a further drive pulley 94 according to the invention, which is achieved in an electrical manner in that a distance shark motor 96 is driven, which is provided on the underside of the ter, which is attached to the rear and front edges 25 of the frame. Thus, the drive two rotates in the direction of passage of successive belts 92 clockwise, whereby the drive arcs are kept at a distance from each other and that the disk 90, the shaft 88 and the roller 94 are rotated between the drive of the cutting device and, as a result, the conveyor belt 80 in the bows engage and run along with them- direction of arrow 102 in FIG. 1 moves, the device can be triggered. 30 A guide plate 104 is used for lateral alignment

In this way, a gap is created between the ten sheets of paper. The right end of the guide plate rear and front edges of two in the pass-through direction 104 is designed and constructed as an inclined downwardly inclined surface 106 tangentially consecutive arches, to which an inclined deflection plate 108 is fastened by means of screws 110 that respond to the arched gap. the sheet concurrent scanning an automatic 35 Immediately above the conveyor belt 80 is a precise cutting of the adhesive strip according to flat, horizontally extending plate 112, which enables with each application on the sheet. small distance on the support plate 12 by

Further advantageous refinements of the invented screws 114 and 116 are attached. The training are characterized in the subclaims. Plate 112 is provided with a number of openings 118 aligned in the longitudinal direction, which are explained in more detail above with reference to the drawing. There conveyor belt 80 lie. In each opening 118 shows a hold-down ball 120 is arranged, the lower

F i g. 1 is a side view of the peripheral portion according to the invention protruding slightly above the underside of the device, plate 112 and the upper surface of the conveyor

Fig. 2 is a section through the cutting device 45 tape 80 detected. Are the sheets of paper between as well as those with. The arch-following device extends the upper surface of the conveyor belt 80 and the lower surface along line 2-2 in FIG. 1, surface of the plate 112 is inserted, so practice the balls

F i g. 3 shows a section through the coupling along the 120 a slight downward force on the line 3-3 in FIG. 2, surface of the paper sheet out and ensure

F i g. 4 shows a section along the line 4-4 in FIG. 2, 50 thereby a secure drive connection of the paper F i g. 5 shows a section through the cutting device bent with the conveyor belt 80, so that the paper is along the line 5-5 in FIG. 2, bend safely transported along the plate 12

Fig. 6 will be a section through the spacer.

along line 6-6 in Fig. 1, 'On the underside of the frame is an electrical

F i g. 7 is a schematic representation of the guide fin motor 126 attached to a drive pulley 128.

The drive pulley 128 is driven by a drive

along line 7-7 in FIG. 2 and belt 130 with a further drive pulley 132

Fig. 8 is a schematic representation of the angle connected.

positions of the spacer and the guide finger according to From a sprocket 204 is the driving force

Fig. 2 and 6. 60 via a chain 208 to a second sprocket 226

From Fig. 1 it is apparent that the device transfer 10, as shown in Fig. 2 it can be seen by a locking bolt 228 is fixed at a verstreifen laterally on sheets from a feed section 38 on the operating shaft 230 for applying reinforcing strips such as adhesive . The shaft 230 is the left end of the device for stacking the sheets, rotatably supported by two ball bearings 232 and 234 , a conveyor device 80, 112 for feeding the 65 sheets in bores 236 and 238 in the side parts 24 , a roller device 396, 432 for opening - or 26 are arranged. Another sprocket 240 bring the adhesive strip under pressure and is firmly connected by a locking bolt 242 to the adjoining cutting device 246, 288 shaft 230 and transmits the torque

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from the shaft 230 to a further drive chain 244, a predetermined rotation of the drive part 303 from FIG. 1 can be seen and its action with respect to the shaft 264 is a force-fit connection will be described below. On the right manure between the outer race 298 and the End of the shaft 230 near the side part 26 of the inner race 300. When the balls 302 intervene 10 there is a cylindrical lower 5 see the lugs 306 lie, i. H. in the in F i g. 3 Knife holder 246, the position shown in a central bore 248, the shaft 264 can freely face each other, through which the end of the shaft 230 rotates over the drive part 303. However, if stretches. Several needle bearings 250 are within which the balls 302 on the lugs 306 move, whoever ends of the bore 248 and support it between the inner and outer barrel knife holders 246 on shaft 230. Pressed in by an io ring 300 and 298, and consequently a set screw or the like. 254 is a hub 252 fixed, a rotation of the shaft 264 acts simultaneously connected to the end of the shaft 230, causing rotation of the drive member 303. When the balls the knife holder 246 to an axial movement against-302 along the circumference of the lugs 306 of the above the bearing 234 and the hub 252 prevented ring 294 from moving away, the connection between will. The knife holder 246 is provided with an axially inner and outer race 300 running, radially inwardly directed slots 256 and 298 are canceled, and as a result the shaft provided in which a cutting knife 258 is attached. 264 freely rotatable with respect to the drive part 303. The knife 258 carries a cutting edge 260, which is due to this measure when the shaft rotates The mode of action is described below, around which on 264 a non-positive and a the paper sheets applied adhesive tape to 20 slip drive of the drive part 303 achieved, as by cut. A gear 262 is at the left end of the arrows in FIG. 3 clarifies. The mode of action Knife holder 246 attached and works on the below this alternately frictional and slip described Way. the drive will be explained later.

Immediately above the shaft 230 and in the same the drive part 303 is with a radially forward

Another laterally extending 25 externally extending gear wheel section 308 (FIG. 2) lies in the vertical plane.

Shaft 264, which is provided by a hollow cylindrical housing which has a plurality of teeth 310,

266 is held on the side part 26. The housing 266 mesh with the gear 262 so that the

is in an opening 268 in the side part 26 by multiple rotation of the drive part 303 to an opposite

rere radially offset clamping elements 270 attached, which leads to directional rotation of the gear 262,

by several screws 274, which are in the side part 30 between the gear section 308 and the coupling

26 are screwed in, a lubricant seal 312 is arranged against a radially outward development 292

running shoulder 272 at the right end of the genet, which prevents leakage of lubricant from the

housing 266 can be pressed. The shaft 264 is formed by the annular space between the housing 266 and the

two ball bearings 276 and 278 in the housing 266 prevents the rotary drive part 303.

mounted in a bar and protrudes laterally outwards over both 35. The knife holder 288 has a section 314

Ends of the housing 266 as shown in FIG. provided, which extends from the knife holder 288 radially

Two intermeshing gears 280 and extending outward and substantially laterally with

282 provide a drive connection between the knife holder 246 fastened on the shaft 230

Welle230 and Welle264 and are aligned through. As best shown in Fig. 5, the

Cross bolt 284 or 286 with the shafts 230 or 40, section 314 with a radially inwardly

264 connected. provided the slot 318 in which a cutting knife

On which is attached laterally to the outside via the side part 322. The cutting knife 322 can with The protruding portion of the shaft 264 is shaped like a cutting cylinder mounted on the knife holder 246 upper knife holder 288 attached. knife 258 cooperate in such a way that with a ge-Der Knife holder 288 is on shaft 264 by 45 mutual rotational movement of shafts 230 and 264 several axially displaced needle bearings 290 rotatably, the cutting knives 258 and 322 whirling like a pair of scissors and can with the shaft 264 by coupling around the applied to the paper sheets treatment device 292, which is most clearly separated from Fig. 3 with adhesive strips. After the representation of the can be seen to be connected. The clutch 292 F i g. 5 the knives are just approaching the cut from a coupling ring 294, which curve through a 50. The cutting edge of the upper knife 322 is radially inwardly extending bolt fixed to the at a small angle to the axis Knife holder 288 is connected. Set radially within the shaft 264, and the cutting edge 260 of the Ring 294 is a ball bearing device, which extends from lower knife 258 at an angle (see. Fig. 2), so an outer race 298, one fixed to the shaft that the two knives are only on the actual connected inner race 300, multiple balls 55 touch point of separation.

302 and a drive part 303. The left drive part 303 is with the upper knife end The drive part 303 is connected to three axially extending holders 288 by two tension springs 324 and 326 Slots 304 are provided in which the balls bound, which are attached to axially extending pins 328, 302 are received, whereby the end of 330 and 332 and 334 on the in Fig. 4 Darge drive part 303 protrudes into the coupling 60 are attached in a manner. The tenons 328 and 334 (See Fig. 2), with the balls 303 uniform by being press-fitted into the upper knife holder 288 distributed over the circumference. As best seen in Fig. 3 used and extend in the axial direction in As can be seen, there are enlarged bores 335 in the drive part 303 on the inner circumference of the ring 294. three lugs 306 are provided, which are somewhat radially. The pins 330 and 332 are in the drive part 303 protrude inside and a small, radially inwardly 65 pressed and extend in the axial direction Directional deformation of the outer race 298 in the direction of the knife holder 288. The springs 324 and 326 on the order of 0.1 to 0.2 mm. enable a mutual rotation of an-die Deformation of the outer race 298 represents drive part 303 and knife holder 288 until the tenons

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334 and 328 the inner surfaces of the bores 335 is described below and which serves to touch. When the drive part 303 rotates, the adhesive strip is applied to the length of the support plate 12 it acts to apply a twist to both the lower knife-transported sheet of paper. The roller holder 246 as well as the upper knife holder 288, 396 has a hub 398, which by an adjustment bis the upper knife 322 the lower knife 258 screw 400 is rigidly connected to the shaft 360. stirs, as shown in FIG. 5 is shown. The hub 392 is supported by a helical spring 402, Rotating the knife holder causes the different one axially outwardly via the shaft 360 pre-engagement position of the two knives is a peg 404 that is spaced apart and firmly connected to it pulling the springs 324 and 326 so that the knife engages, pressed axially against the roller 396. the due to the spring pressure in mutual contact, the spring 402 runs between a retaining ring 405 on the will hold. Pin 404 and a washer 406, which against

On the outside in FIG. 2 right end of the shaft strikes several needle bearings 408, which between 264, a guide finger 340 is arranged, which extends radially around the outer circumference of the shaft 360 and towards the inside extends outside of the knife holder 288 and circumferentially of the bore 394 are arranged. As a result a fastening hub 342 is firmly connected to it, the ring 392 of which is between the roller 396 that is. The guide finger acts as a guide device to and the washer 406 is pressed, and the pressure sensing the location of the connection point between force is large enough that the spacing halves The paper boat 390 conveyed by the device 10 rotates with the shaft 360, but on the gen, and its working method is related wave 360 can slip if he is on a paper with which applies to the work sheet described below as a whole, as will be described below, wisely clear. An annular hub 344 is between. As best shown in FIG. 6 can be seen on the left

view the hub 342 and portion 314 of the end of the shaft 360 through a locking pin Arranged knife holder and with the help of a gear 410 fastened a gear 412, which with a distortion screw 346 and a friction ball 348 releasably meshes with speaking gear, which is rigidly connected to a attached to the outer circumference of the knife holder. Connected to support shaft for an upper counter roll 432 the far right end of shaft 264 is one. The lower roller 396 is resilient against the counter hub Roll 350 tightly through an adjusting screw 352, which is used to apply the adhesive tape, bound. A coil spring 354 is pressed between the.

Hub 350 and the outer needle bearing 290 on the Although the device 10 rotates in a simple manner 264 arranged. The spring 354 pushes with a self-adhesive reinforcement Axial force against the hub 342, so that when strips on successive sheets of paper on one Rotation of shaft 264 also brings about rotation of the guide finger, as a result of the relatively high cost 340 is ensured between the conductive materials, the preferred embodiment of the finger 340 and shaft 264, however, a slip on device 10 equipped so that non-adhesive occurs when the tip of the guide finger is applied to a paper reinforcement strip. The emergency arch occurs as described below. agile adhesive is applied directly to the We now refer to FIG. 6 referred to. Applied from strips of material, if this is from a of the shaft 230 is a torque on another supply roll to the upper and lower rolls 432 Wave360 is transmitted, which runs to the side of the and 396. As can be seen from Fig. 1, is a Side parts 24 and 26 are provided immediately below the 40 adhesive application device 470, the base plate 12 extends. The transmission of the rotary from a support arm 472, an adhesive container moments is produced by the aforementioned chain 244 473., an adhesive reservoir 476 and two, which consists of the chain wheel 240 with a corresponding roller 482 and 484, connecting sprocket 362, which by a As shown in FIG. 1, the pin 364 is firmly connected to the shaft 360 below. The 45 position plate 12 immediately to the left of the roller 78 Shaft 360 is mounted coaxially in a laterally extending actuator switch 562. The switch 562 Bore 366 arranged, which is provided in a rocker 368 with an actuating arm 564, which he forms is. Two ball bearings 370 and 372 are captured and depressed when facing each other rotatable mounting of the shaft 360 on the following paper sheets by the conveyor belt 80 longitudinally attached to the ends of the bore 366, and two loads 50 of the surface of the plate 12 are transported, Fastening rings 373 prevent axial movements. The operating mode is as follows: If there is a paper

between the shaft 360 and the ball bearings 370 and bent with its rear edge at a small distance 372. The rocker 368 is attached to a pivot shaft in front of the actuating arm 564 (Fig. 8) of the switch 374, which is laterally between the side 562, so the Device 10 by switching share 24 and 26 extends. In the side parts 24 and 55 of the motor 96 are set in motion, whereby, 26 suitable countersinks 378 and 380 are made according to the illustration of FIG. 1, which forms the drive belt 92 which takes up the two ends of the shaft 374 and is driven in a clockwise direction and the conveying belt. On the shaft 374, several fastening straps 80 are provided around the rollers 76 and 78 in the direction of the ring 382, 384 and 386 in order to move the arrow 102 axially. Then the action of the swing arm 368 is switched on opposite the shaft to 60 electric motor 126, which prevent the drive belt. 130 drives clockwise so that the

At the outer (right) end of shaft 360 is drive pulley 132 also rotates clockwise, a finger-shaped spacer 390 on which a new sheet of paper is then inserted Hub 392 is attached. The hub 392 has a central one to which an adhesive strip 446 is to be applied. Bore 394 which the outer end of the shaft 360 in 65. The sheet of paper is inserted so that its the in F i g. 6 slidably receives. Un- front edge below the hold-down ball 120 Immediately to the left of the spacer 390 there is one, the weight of which makes the paper cylinder-shaped lower roller 396, the effects of which are detected by the conveyor belt 80 and transferred to the

Claims (8)

7 8 device 10 is transported. When the holder 246 is being transported into the machine while the cut paper sheets are wandering through, the pre-curve of the sheet presses driven by the coupling 292. F i g. 7 the edge of the actuating arm 564 of the switch 562 shows the various positions of the guide finger 340 down, whereby the drive chain 208 according to the illustration in FIG. 1 is turned clockwise. 5 conclusive drive. The position A of FIG. 7 therefore shows the sprocket 226 and consequently the guide finger 340 rotate in the same position in which it also rotates the shafts 230 and 264. Since the shaft F i g. 8 is shown in solid lines. In the position connected to the shaft 360 via the chain 244, the guide finger 340 tries, as a result of the rotation of the shaft 360, the friction generated by the spring 354 (see FIG. 2) also revolves and consequently moves However, the abio force is prevented from rotating by the paper stand holder 390, which arched the sheets of paper. If, however, the guide finger 340 holds the from which in FIG. 8 shown in dashed lines- the gap between the sheets of paper penetrates, looks for position A clockwise in position B. the friction fit of the knife holder between the positions. and B (Fig. 9) to accelerate until the cycle is in the device, a suitable layer is clamped between the 15 knives 322 and 258 and rollers 432 and 396, which allow him to cut the paper representations according to the speed F i g. 1 and 8 to the right transport junction. If the lead finder. The spacer 390 touches and follows the ger 340 reaches position B, the drive part has the trailing edge of this sheet of paper. As a result of the 303 balls 302 in the coupling device, in that the conveyor belt 80 moves considerably to a position in which it moves between the races faster than the spacer 390, the 298 and 300 will be pinched and, as a result, the leading edge of the new inserted sheet of paper that drive the drive part 303 force-fit, pull in the first sheet of paper until only the n late the upper knife holder 288, the lower spacer 390 holds the two sheets of paper on Ab- knife holder 246 and the guide finger 340 over the. The conveyor belt stops during the transport of the intersection curve from B to C in FIG. 7 drives. When the sheets of paper along the support plate 12, the knives approach the cutting position, they touch the newly inserted sheet of paper with the edge in such a way that the cutting process continues, similar to the stand holder 390. a pair of scissors expires, as already described above. The adhesive tape 446 is applied to the two pieces of paper. After the adhesive tape 446 has been cut, sheet applied when this between the roller 30, the front sheet of paper is accelerated after 396 and the counter roller 432 pass, as moved in right, when it is under the output roller 210 F i g. 8 is shown schematically; while practicing the steps, and conveyed into the output cut 52. Re-rolling 432 and 396 on the adhesive tape 446 pressure that of the front sheet of paper from the position between The knife holders 246 and 314 are transported away from the knife holders 246 and 314 to ensure a secure connection with the sheet of paper to manufacture. As the rollers 432 and 396 have moved further, the guide finger 340 continues its rotary motion, Also move the two sheets of paper further clockwise (Fig. 8) until its tip opens through the machine (to the right in FIG. 1) and the top of the newly inserted sheet of paper is now recorded meets one another through the adhesive strip 446 and is thus in a position in which it connected, as shown in FIG. 8 can be seen. the junction between the rear edge of the When the spacer 390 is as shown in FIG. 8 40 newly inserted sheet of paper and the front edge approaches position marked C , it covers the paper guide finger 340 subsequently inserted into the machine and enables the new sheet of paper to be found. gene wanders over the tip of the guide finger 340, and the newly inserted sheet of paper sets as a result of the consequently ensures that the guide finger 340 rotation of the rollers 396 and 432 continues its movement through the gap between the two sheets of paper 45 along the plate 12 until its trailing edge passes outside and follows it. When the paper sheets come into engagement with the actuating arm 564, wherever they travel through the machine, the guide finger 340, which is switched off by the switch 562 and as a result, begins to rotate about the shaft 264. The descent an electromagnet is de-energized, which in turn, the holder 390 follows the guide finger 340 until it has the reinforcement material application section of the main Fig. 8 reached position D and rotates 5 ° machine 10 stops. When this electromagnet then returns to position A , in which its outer surface is excited, the machine 10 has a working cycle which ends the underside of the newly inserted paper base and remains in this state until the next one touches the rear edge this first sheet of paper is used.
Sheet of paper when it is in F i g. 1 moved to the right. As already described above 55 claims: ben, the guide finger 340 and the upper cutting knife 322 are attached to the knife holder 288, which is attached to the 1st device for applying an adhesive wave 264 is supported and over the drive part 303 strips on sheets with a conveyor a gear connection with the lower knife for transporting successive sheets through holder 246 owns. F i g. Fig. 8 shows that the upper 60 is the device with a roller device Cutting knife 322 with guide finger 340 in such a way as to apply the adhesive strip to a pre-radial is aligned that the guide finger 340 at a given area of the arc and with a its wandering into the gap, the knife cutting device for cutting off the adhesive automatically aligns so that it attaches itself to the connecting strip, characterized in that meeting parts between the two sheets of paper. 65 a spacer (390) is provided, which the To have a sufficiently large cutting force to cut through the rear and front edges of two in continuous cutting of the adhesive tape 446 will be consecutive arcs of one another upper knife holder 288 and the lower knife which keeps at a distance and that the drive of the Cutting device (258, 322 ) can be triggered by a device (340) which engages between the sheets and moves with them. 2. Apparatus according to claim 1, characterized in that the spacer (390) is arranged coaxially with a roller (396) which is rotatably driven together with a counter roller (342) for the sheet feed, the speed of the sheet feed being lower than the feed speed is the arc to the spacer. 3. Apparatus according to claim 2, characterized in that the counter roller (432) is provided for application and the roller (396) mounted on a rocker (368 ) is provided for pressing the adhesive strip (446) onto the sheet. 4. Device according to. Claims 1 to 3, characterized in that the spacer (390) consists of a finger which is driven by the roller (396) in a frictionally engaged manner. 5. Apparatus according to claim 1 to 4, characterized characterized in that the device which triggers the drive is a guide finger (340) which is driven in a frictionally locking manner by a shaft and which can be pivoted into the gap between two sheets in the feed direction. 6. Apparatus according to claim 5, characterized in that the guide finger (340) is arranged coaxially with the first knife holder (288) of the cutting device and with it ίο is firmly connected. 7. Apparatus according to claim 6, characterized in that the knife holders (246, 288) connected to one another via a gear (262, 310) are driven by the shaft (264) via a coupling (292) which is in a certain angular position Meiser (258, 322) is indentable. 8. Apparatus according to claim 7, characterized in that the coupling (292) can be actuated in different angular bearings of the guide finger. For this purpose 2 sheets of drawings