DE2257794A1 - PRECISION SLITTING MACHINE FOR PROCESSING PLASTIC FILMS - Google Patents

Description

Patent attorney

MBnchen 22, core *. 13, Tel. 29 25 55
Postal address Munich 20, PO Box 4

Manchen, November 24, 1972 My reference: P 1461

Sign Marshall «nd Williame Company 46 Aaker Street Providence, Rhode Ielend

United States

Prägialonaechlltgoaschine train Beerbalten von Plcntikfollen.

The invention relates to a visualization device with which very thin plastic foils cut into very chtaail strips can be, dl · in the manner of threads sum contractions or Lichen used to be «this strip or F & dt» ktfrjia? I also intended for direct processing in Toxtilaaeehlnan be. So far, seats have been used by Xrelse cutters, separated by bordering bands would be # n, tia or to cut Pepler into strips.

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With the progressive use of plastic film in which

Ί,

ee is a very thin plastic film, when cutting strips, the narrower ale 0.5 cm arose were, difficulties by de.0 these strips on the JCutting blades got stuck due to the friction that when the cutting edge is pierced by the plastic film. It is therefore not possible to insert thin plastic filings in Cut strips that were narrower than 0.5 approx.

The carpet industry, irrespective of the need to replace photographic material such as that used in all-weather carpets, has indicated that plastic films would meet these requirements if the strips could be woven or braided.

The aim of the invention is therefore to provide a slot machine conceive, with the plastic filament material very low Thickness in exact strips of about one millimeter Width can be cut.

In such a slitting machine, mechanical means should be provided to prevent the cut Strip material adhered to the cutting blades and their Taking part in the rotary movement.

The invention thus relates to a precision slitting machine ■ for processing plastic foils and is according to the invention characterized by a cutting frame, by a «first Cutting blade drive shaft, through a variety of cutting blades, through a variety of dinner times Means by alternately attaching the multitude of cutting blades and spacers to the drive shaft Means for mounting the first drive shaft in the cutting frame through a second cutting blade drive shaft a second multitude of cutting sheets, by "stucking into a" second multitude of spacing, by means of alternating "!

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Attaching the variety of alarm sheets and spacing »» etüeken on the Ewelten drive shaft "by means" around bearings the second drive shaft in Schnelderahiaen such that the second plurality of cutting blades with the first plurality from cutting sheets, through «ine Vlelsahl von FUlirungefingern, by holding «cl * ia * nt ·, the guide« «* hold fingers in pairs so that each * pair old distance * « pieces are in alignment on the two die plate axi drive shafts, and by means of feeding plastic foil to the cutting edge " leaves.

In the following, the Prär.islonMchlitcmaschin «according to the invention is explained in more detail with reference to figures.

Fig. 1 shows the plan view of a erfindungegeeltee Slotting machine,

UIe Fig. 2 shows a view of the inventive Haechine seen from the end of the assignment.

Fig. 3 shows the view of a cross-sectional area with partially cut parts of the machine from which the Means to set the cutting sheets are evident *

Fig. H shows the view of a cross-sonic bit partially cut machine parts, from which the relative position of the guide fingers to the scorn leaves can be seen

Fig. 5 shows the view of a cross-sectional area with partially cut machine parts from which the overlap of x two cutting blades is visible.

6 shows the view of a slot machine according to the invention.

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_β4β 22 577 9 A.

FIG. 7 shows the right side view of the machine according to FIG. 6.

Fig. 8 shows the exploded perspective View of cutting blades and guide tunnel fingers.

Me Fig. 9 shows a perspective detail view of a eccentric bushing for a cutting blade drive shaft

Here flg. 10 shows schematically the arrangement of the supply and take-up rollers customary in textile machines in cooperation with guide rollers which determine the feed path of a tape.

The new and improved preference slot machine shown in the figures has a base plate ii on which a vertical left side frame 12 and _; a perpendicular right side frame 13 arranged on the opposite side are arranged. A base support 14 is connected to these two side frames 12 and 13 on opposite sides.

A cutting frame 9 ″ on the one cutting frame base 15 with a left side part 16 and a right side part 17 is attached to this Baeistrager 14. Reference is made to FIGS. 1, 3, 4 and 5 below.

The left side part 16 is with two elongated slots 16 and 19 provided. Similarly, the right Rare part 17 has two slots, not shown, which lie opposite the elongated slots 18 and 19 and run parallel to these.

A guide rod occurs through the elongated slot 10 and the opposite slot in the right side part 17

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20 through, which is a means of nuts 21 and 22 in selected position © on the left side part 16 and aa right side part 17, respectively. '

A second guide rod 23 passes through in a similar way the elongated slot 19 and those opposite it Slot in the right side part 1? through and eats in the selected position by means of cutters 24 and 25, which are on its ends are screwed on, attached to the two side panels.

A first drive shaft 29 for a cutting blade is rotatably mounted in bearings 51 and 32 which are integrally connected to the left side part 16 and the right side part 17, respectively.

It is now on the Flg. 9, there is shown an eccentric sleeve 30 having a body portion 33 having an enlarged end 34. In this body part 33 there is an eccentric bore 35. The center point "B * is the concentric center point of the body part 33 and the enlarged end 34 * which is indicated by the radius ^Η κ1". The center point ⁿ C ⁿ is offset from the center point ^tt B "by a distance ^M I> ^M , the radius ^w E ⁿ indicates the offset of the bore 35, which serves as a bearing for a second drive shaft 36 for a cutting blade. The body part 33 is attached to the left side part 16, which has a corresponding receiving opening, by means of a head screw 67. An identical and associated socket 30A is attached to the right part 17, which has a corresponding opening for receiving the body part 33Λ, by means of a head screw 68.

The eccentric bushings 30, 3QA are with guide openings 60 provided, in which a handle 61 is inserted to to facilitate a partial rotary movement of these sockets.

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As shown in FIGS. 3, 36, the far «drive shaft has a portion 42 to pickup a ski Wide sheet ·" 40 and a spacer Stuckes 41 euf, further comprising a Bundftbechnitt 43 'of a wall 44 forms, as well as at their ends Leger · faces 45 _t in the eccentric bores 35, 3SA. are held.

In the same way, the drive shaft 29 has a recess 42A for receiving a cutting blade 40 and a spacer Ai _1, a collar section 43A "which" forms a WaM 44Λ, and at its ends bearing surfaces 45A, which, as previously mentioned, are in the left side part 16 bar. la right side part 17 are held.

When assembling a set of cutting blades 40 on the drive shafts 29 or 36 will become so Cutting blade 40 stranded with a shaft opening 30 is, the section 42 for receiving cutting blade and Slid along the distance until it is on the wall 44 to the Plant is coming. Then a spacer 41, which is with a shaft opening 51 is provided on the section 42 pushed on until it rests against the cutting blade 40. In this way, cutting blades 40 and spacers 41 are pushed successively and alternately onto section 42 until the desired number of cutting blades is reached on the drive shaft 29 and / or the drive shaft 36 is located.

A slit collar 52, which has a hook area 53, has a slit 54 and a cutout provided, which forms © ine clamping surface · 55 · A headed ' See «Screw % · penetrates an opening 55 and is rotatably fastened in a screw thread in the collar 52. In addition, three rotatable lifting screws 57 are attached to the collar 52. In the case of further assembly, the Vellen Griffberelen 55 is pushed over the section 52 to

309822/0944

the protective collar 52 comes to rest on a spacer 41. The collar 52 is then fastened to the drive shaft 29 or 36 using a cap screw 56. This also connects the set of cutting blades and spacers to the shafts 29 and / or 36. However, an optional feature in the form of jackscrews 57 enables the set of cutting blades 40 and spacers 41 to be pressed against wall 44 and, in addition, by rotating these jackscrews accordingly, the cutting blades 40 can be vertically oriented.

The drive shaft 29 is then in the shaft bearing 32 in right side part 17 so far inserted that the against «· Overlying shaft end 45A with the mile bearing 31 in left side part 16 is aligned and can then be used in this.

In the same way, the drive shaft 36 is so far in the eccentric hole 35A inserted »the end of line 45 aligned with the eccentric bore 35 and inserted into it can be.

It is now on the Flg. 1 * 3, 4, 5 and 7 are referred to from which it can be seen that the cutting blades 40 carried by the width 36 with those carried by the shaft 29 Cutting blades 40 are aligned. One recognizes Auseerdera In these figures, the cutting blades 40 appear with the simultaneous rotary movement of the eccentric bushings 30, 30A of the shaft 36 are moved towards the cutting blades of the shaft 29 and can be moved back again from the same. The cutting blades 40 of the shaft 36 are of the cutting blades 40 of the trowel 29 is moved away when a plastic sheet is initially inserted into the cutter blade sets. the Cutting blades 40 of the shaft 36 are then back on those the shaft 29 moved a certain distance to

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BAD ORiGiNAL

to achieve an optimum of cutting or shearing action. As FIG. ¹ shows J can calibrating the cutting blades 40 on ilen waves 5C and 29 overlap so that © ine shearing edge is achieved.

The spacers 41 determine the width of the strips in which the plastic sheet is to be cut.

1, 7 and 3 show FUhrungafinger 63, which the shape of a hockey stick, namely a hand grip part 64 which is integrally connected to an Ana 65 which runs at right angles to the handle part 64. Of the Arm 65 is provided with an opening 66. The guide fingers G 3 are when assembling the first guide rod 20 and the second Fühxaingeetange 23 pushed along and are Available in a number equal to the number of spacers " 41 on bells 29 and 36 is the same. The handle parts 64 the guide on the respective guide tangan 20 and 23 are aligned facing each other and are also aligned with spacers 41 on the affected found full 29 and 36.

The guide rods mounted in the elongated slots 18 and 19 20 and 23 enable the guide xinters to be adjusted in this way with the cutting blades 40 align (see Fig. 4).

The upper feed roller 70 is rotatable at both of its ends in the vertical left lame part 12 or in the corresponding right Kaiuaentell 13 stored in a similar character Vela 1st find a lower guide pulley 71 on your two in these two frame parts 12 and 13 are rotatably mounted. As the fig. V shows these two lumps 70 and 71 are located above and below the ftlhningsfinger 63 and the cutting blades 40 Im vertical alignment so that the sheet material

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BATH

during the sonic or shear process in a vertical direction Direction runs.

A motor 75 is attached to the base plate 11 (see FIGS. 1, 2 and 6), the drive shaft 76 of which carries a sprocket. A male coupling piece 78 is attached to one end 45 of the shaft 36. Similarly, the inner end 45A of the shaft 29 carries a male coupling piece 79. Two bearing blocks 80 and 81 are attached to the base support 14. A first short shaft 82 is rotatably mounted in the bearing block 80 and carries a die coupling piece 83 at one end and a spur gear 84 at its other end. The other bearing point of this shaft is located in the right-hand vertical receiving part 13. 'The coupling piece 83 of this shaft is in engagement with the coupling piece 7β. In a similar manner, a second short shaft 85 is provided which carries a hatch coupling piece 66 at one end and a spur gear 87 and a sprocket wheel 88 . This shaft is rotatably mounted in the bearing block 81 and in the right vertical frame 13, its coupling piece 86 is in engagement with the coupling piece 79, its spur gear 67 meshes with the spur gear A chain 90 establishes a connection between the sprockets 77 and 88.

In operation, a plastic film strip of any length is placed on the liberal upper guide roller and placed with its end between the cutting blades 40 and the guide fingers 63. As described above, the son's envy blades 40 and guide fingers 63 are adjusted to provide a suitable relative cutting position between each set of cutting blades and proper guidance of the film by 41 'guide fingers. The film is then guided over the lower guide roller 71. In a first embodiment, the motor 75 networks via the drive shaft 76, the chain wheels 77 and 70 and the spur gears 84 and 87 "- the first drive shaft 20 for the cutting blades and the

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Drive shaft 36 for the cutting blades and there too Bclinoidcbllltter 40 itself la rotary movement.

Ia de · 7X ₁ S. 10 lat another Auelillu-ungsiara dargeateilt "ι .Location 1st schematically a supply roll 90'geseilt _t aus'die a supply of Plastüti'oiie wound is. ¥ ie eua der Tecraiik of textile processing well known iat, iiaiui the VorrataiOlle '9O aiii bebtimatei · Jren ^ «meßur ^; s ^; eachwixidi £ keit be driven, eo da3 the Pl & stxkXolienbaiid around a certain i» trec.ite pro Minute is moved on.

Di «? upper FUhiningarolie 70 and the untex «FUIuiitj ^ sralle 71 X1 £: renda8 tape through the silk sheets 40 through.

An Aui'nahtaerolie 91 is according to the Jäewegui ^ g. of the supply roll 90 rotated "ao dad 'the tape" W * dureh 41 · oc; _t .neid "leaves 40 hindui-chgexogen, regardless of" whether the dleae aelbat perform a twisting movement odex- not · At UBT the last thought Aual'Uhx 'ungaroiia null die PlaatikXolie "strong enough eeiii to be able, among other things, to transfer the friction away from the stationary slides.

The FUhrungefijtger 63 lead the individual strips »the au» cut out the foil, so the iScüneideblüttei-AO through iuui νυ:!. by adding »da £> these include the ijchneldebiütter

Zur vorf; toh £ -i «<iei; iriUute iju-u; of the invention were merely Some examples are described, but they are not the only ones

n, and also be modified kdniien without the ".. ii ί>ΓΓ1χιαι"% F.al) © - to verlasaen.

9 A 4

Claims (1)

Claims 1. Precision slot machine for processing plastic films, characterized by a cutting tool (9), by a first cutting blade drive shaft (29), by a large number of cutting blades (40), by a large number of spacers (4t), by means (52) for alternating securing the cutting blades and spacers on the drive shaft, -for by means (31 »32) Jjftgerung the first drive shaft (29) tm Schneiderahisen, by a second Schneideblattantriebswlle (36) through a second plurality of cutting blades (40) through a second plurality of spacer pieces (41), by means of alternately fastening the cutting blades and spacer pieces on the drive shaft (36) by means (30, 30A) for mounting the second drive shaft (36) in the cutting frame in such a way that. the second plurality of cutting blades is in alignment with the first plurality of cutting blades, by a plurality of guide fingers (63), by means of bellows (20, 23) which hold the guide fingers in pairs so that each pair with the spacing set on the two cutting blade drive shafts (29, 36) escapes, and by means (70) for feeding plastic film (W) to the cutting blades. 2. Machine according to claim 1, characterized in that it has drive means (75, 77, 10, CjS) through which the ^ chrieidebXattantriebsweilen (29, 36) are set in rotary motion. J. Machine according to Claim 1, characterized in that it has means (91) for feeding the plastic film past the cutting edges of overlapping cutting blades (40). 309822/0944 -12-225779 V 4. The method according to any one of the preceding claims, characterized in that the means for storing the second cutting blade drive shaft (36) in cutting racks (;) a pair of eccentric bushings (30, 30A) which are arranged at the ends of the second drive shaft and attached to the fluid frame and through which add the plurality of cutting blades (40) on the second drive shaft to the plurality of cutting blades on the first drive shaft (29) and can be moved away from the same. 5. Machine according to one of the preceding claims, characterized in that the Schneideraliaen (9) »consists of a base part (15) and a left (16) and a right (17) side part that the bearings (31, 32) For the harvest, cutting plate drive shaft (29) are arranged in these side parts and are in alignment with them, since means (67) for fastening the eccentric bushes (30, 30A) are provided in the bedlmnter rotary position, and that the rotary movement of the bushes rotatably supports them second sclineide blade drive shaft (36) is brought out of a separated position into a position in which the cutting blades (40) of the first drive shaft (29) overlap those of the second drive shaft (36) so that the plurality of second cutting blades with the plurality of first cutting blades Form cutting edges because the first and second cutting blades are each aligned with one another. 6. Haschine according to claim 1, characterized in that the left side part (16) one «first and second elongated slot (18, 19) and the right side part (17) has a third and fourth elongated slot, each with the first or . of the second elongated slot d «a left rare parts (16) that a 309822/09 44 first guide rod (20) is adjustably mounted in the first and third slot that a further guide rod (23) is adjustably mounted in the second and fourth slot that a first plurality of guide fingers (63) from. The first guide rod (20) and a second plurality of guide fingers (23) are carried by the wide guide rod, the guide fingers of the first plurality of guide fingers being aligned with guide fingers of the second plurality of guide fingers, so that pairs of guide fingers are created which each wipe cutting blades (40) of the first and second drive shafts (29, 36) are arranged, 7. Machine according to one of the preceding claims, characterized in that one code of the first Cutting blade drive shaft (29) a first gear (β?) and a second gear (64) is coupled to one end of the second cutter blade drive shaft (36), and that means (75 »90, 88) for generating a rotary movement of the first gear (87) are provided, and that the second gear (37) either at the same speed how the first gear is rotated or at a different speed. O. Machine according to one of the preceding claims, characterized by a base plate (11) with a to this, the left rare frame (12) running vertically and a »right rare frame (13) that runs in the same way, by a base support (14) which is attached at its ends to the left and right side frame parts, respectively the cutting frame (9) attached to this Baalstrager is, by an upper guide roller (70), dlejbit their Ends at the vertical side frame parts (12, 13) is fixed by a lower guide roller (71) which is fixed in the same way and which is shown in 309822 / 09A4 is aligned with a vertical plane of the upper guide roller, where this vertical plane runs through the sons, formed by the second plurality of cutting blades be that let aligned in relation to the harvest multitude of Celine ideaves, »ο defl one to be worked on Plastic film is fed in a vertical direction to the cutting edges of the multitude of saw blades « 309822/0944 fS Blank page