DK142228B

DK142228B - Cutting device with several rotating cutting tools arranged in a plane side by side.

Info

Publication number: DK142228B
Application number: DK79177A
Authority: DK
Inventors: Helmut Paulus
Original assignee: Saint Gobain
Priority date: 1977-02-23
Filing date: 1977-02-23
Publication date: 1980-09-29
Also published as: DK142228C; DK79177A

Description

i 142228in 142228

Opfindelsen vedrører et skæreapparat med flere i ét plan ved siden af hinanden anbragte, roterende skæreværktøjer, der er anbragt således på en i én retning bevægelig bærebjælke, at de griber ind i hinan-5 den, og således at de uden at berøre hinanden drives synkront med skiftevis modsat omdrejningsretning.BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a cutting device having several, in one plane, juxtaposed, rotary cutting tools arranged on a one-way movable support beam to engage each other and to operate synchronously without touching each other. with alternating opposite direction of rotation.

Skæreapparater af denne art, hvor en række roterende knive, savblade eller andre skæreskiver er anbragt i ét plan ved siden af hinanden på en bevæge-10 lig bjælke, egner sig til at udskære foreliggende materialer i pladeform eller båndforra. Da der imidlertid imellem to naboskæreværktøjer altid bliver et område tilbage, der ikke omfattes af nogen af de to værktøjer, må man give en sådan bærebjælke ikke blot 15 en tilspændingsbevægelse vinkelret på bjælken, men yderligere en langsgående bevægelse i skæreværktøjets plan.Cutting apparatus of this kind, in which a series of rotating knives, saw blades or other cutting discs are arranged in one plane side by side on a movable beam, is suitable for cutting the available materials in plate or tape form. However, since between two neighboring cutting tools there is always an area left which is not covered by either of the two tools, such a support beam must not only give a tightening movement perpendicular to the beam, but a further longitudinal movement in the plane of the cutting tool.

Den ekstra langsgående bevægelse af bærebjælken kræver en ekstra konstruktiv indsats. Endvidere 20 medfører denne ekstra langsgående bevægelse og den dermed forbundne konstruktion, at skæreoperationen selv kræver en vis mindstetid.The extra longitudinal movement of the support beam requires an extra constructive effort. Furthermore, this extra longitudinal movement and the associated construction cause the cutting operation itself to require some minimum time.

Med opfindelsen tilsigtes der tilvejebragt et skæreapparat af den nævnte art, hvor den langsgående 25 bevægelse af bærebjælken undgås, så at konstruktionen forenkles, og skærehastigheden kan forøges.It is an object of the invention to provide a cutting apparatus of the kind mentioned, whereby the longitudinal movement of the support beam is avoided so that the construction is simplified and the cutting speed can be increased.

Dette opnås ifølge opfindelsen ved, at de roterende skæreværktøjer er udformet som tynde og i det væsentlige ottetalsformede vinger med to radiale 30 skærekanter, hvilke vinger er forsat 90° i forhold til den eller de hosliggende vinger.This is achieved according to the invention in that the rotary cutting tools are formed as thin and substantially eight-shaped blades with two radial cutting edges, which blades are set at 90 ° relative to the adjacent blade (s).

Da skæreområderne for de hosliggende, roterende skiver ifølge opfindelsen griber ind i hinanden, bliver de kileformede områder, der ikke omfattes ved 35 cirkelformede skiver, mere eller mindre.stærkt formindsket, så at den langsgående bevægelse af bærebjælken 142228 2 bliver overflødig ved passende dimensionering af de vin-geformede skæreværktøjer ifølge opfindelsen.As the cutting areas of the adjacent rotating discs of the invention intervene, the wedge-shaped areas not covered by circular discs are more or less greatly reduced so that the longitudinal movement of the support beam becomes superfluous by appropriate sizing. the wine-shaped cutting tools of the invention.

I en foretrukken udførelsesform for opfindelsen er formen af vingernes skærekanter således, at deres 5 radiale afstand fra vingernes rotationsakse set i retning modsat omdrejningsretningen er stadig stigende, og at forøgelsen af afstanden er valgt således i afhængighed af bærebjælkens bevægelseshastighed og skære-værktøjernes omdrejningshastighed, at den radiale afstand 10 af den bageste kant af en vinge svarer til den radiale afstand af den forreste kant af den følgende vinge ved opnåelsen af skærestillingen.In a preferred embodiment of the invention, the shape of the cutting edges of the blades is such that their radial distance from the axis of rotation seen in the direction opposite to the direction of rotation is still increasing, and that the increase of the distance is chosen so depending on the speed of movement of the beam and the speed of the cutting tools that the radial distance 10 of the trailing edge of a blade corresponds to the radial distance of the leading edge of the following blade in obtaining the cutting position.

Opfindelsen forklares nærmere i det følgende under henvisning til tegningen, hvor 15 fig. 1 viser et skæreapparat ifølge opfindelsen til overskæring af en mineralfiberplade, fig. 2 skæreapparatet ovenfra, delvis i snit efter linien II-II i fig. 1, og fig. 3 et detailbillede af et skæreværktøj.The invention will be explained in more detail below with reference to the drawing, in which FIG. 1 shows a cutting apparatus according to the invention for cutting a mineral fiber plate; FIG. 2 shows the cutting apparatus from above, partly in section along the line II-II in FIG. 1, and FIG. 3 is a detail view of a cutting tool.

20 På tegningen er bærebjælken vist i stationær opstilling til overskæring af plader, der er stillestående under den egentlige skæreoperation. I stedet for kan bærebjælken med særlig fordel være anbragt således på en bro, som bevæger sig synkront med det • 25 materiale, der skal overskæres, at skæreoperationen kan foregå uden afbrydelse af den kontinuerlige fremstillingsproces for det materiale, der skal overskæres. Sådanne skæreindretninger, der løber synkront med materialet, der skal overskæres, er i og for 30 sig kendt (flyvende sakse, flyvende save), og beskrivelsen vedrører derfor ikke konstruktionen af sådanne medløbende broer, der bevæger sig synkront med materialet.20 In the drawing, the support beam is shown in stationary arrangement for cutting plates that are stationary during the actual cutting operation. Instead, the support beam may be particularly advantageously positioned on a bridge which moves synchronously with the material to be cut so that the cutting operation can take place without interrupting the continuous manufacturing process for the material to be cut. Such cutting devices which run synchronously with the material to be cut are known per se (flying scissors, flying saws) and the description therefore does not concern the construction of such concurrent bridges which move synchronously with the material.

En mineralfiberplade 1, der skal skæres over, 35 bevæges på en rulletransportør og ligger i det område, 142228 3 hvor snittet skal gennemføres, på en underlagsplade 3, der er afbrudt på det sted, hvor de roterende skæren-værktøjer skal føres ned. Transportruller 5 på rulletransportøren er ligesom underlagspladen 3 lej-5 ret på et stativ 6. På stativet 6 er der fastgjort lodrette søjler 7, på hvilke der over rulletransportørens transportplan er lodrette glideskinner 8. På disse glideskinner 8 er den egentlige skærebro anbragt forskydelig i lodret retning på glidelejer 12.A mineral fiber plate 1 to be cut is moved on a roller conveyor and is located in the area where the cut is to be made, on a support plate 3 which is cut off at the place where the rotary cutting tools are to be brought down. Transport rollers 5 on the roller conveyor, like the support plate 3, are mounted 5 on a rack 6. Vertical columns 7 are mounted on the rack 6, on which vertical sliding rails 8. On the sliding rails 8, the actual cutting bridge 8 is arranged slidably in the vertical. direction of plain bearings 12.

10 Skærebroen består af en bærebjælke 9, som bærer skæreværktøjerne, og en ramme 10, 11 af profiljern.The cutting bridge consists of a support beam 9 which carries the cutting tools and a frame 10, 11 of profile iron.

Til gennemførelse af skæreoperationen sænkes skære-broen kortvarigt og føres derefter igen tilbage til sin udgangsstilling ved hjælp af et tilspændingsorgan 15 13, der angriber i rammen 11 over stangen 14 og hængslet 15.For carrying out the cutting operation, the cutting bridge is briefly lowered and then returned to its starting position by means of a tightening means 15 13 which engages in the frame 11 over the rod 14 and the hinge 15.

Driften af de roterende skæreværktøjer 18 sker ved hjælp af en elektromotor 19, som er monteret på bjælken 9. Gennem kardanledsaksler 20 og 20 vinkeldrev 21 drives akseltappe 22, der bærer skærer værktøjerne, synkront og skiftevis modsat hinanden.The rotary cutting tools 18 are operated by means of an electric motor 19 mounted on the beam 9. Through shaft joints 20 and 20 angular drives 21 are driven shaft 22, which carries the tools, synchronously and alternately opposite one another.

Skæreværktøjerne 18 har form af ottetalsformede vinger og er fastgjort gensidig forskudt 90° i forhold til hinanden på akseltappene 22, så at vin-25 gerne trænger ind i det frie rum i nabovingen. Ved overskæringen af mineralfibermåtter eller -plader består et sådant skæreværktøj fortrinsvis af stål af høj kvalitet og er på periferiområdet, der udfører snittet, forsynet med tænder 26, som et 30 rundsavsblad. Skæreværktøjet kan imidlertid også i stedet bestå af ethvert andet egnet materiale, og kan på periferiområdet, der gennemfører snittet, eksempelvis være forsynet med diamantkorn.The cutting tools 18 are in the form of octagonal wings and are fixed reciprocally displaced 90 ° relative to each other on the shaft pins 22, so that the winches 25 enter the free space in the adjacent wing. When cutting mineral fiber mats or sheets, such a cutting tool preferably consists of high quality steel and is provided with teeth 26 as a circular saw blade in the peripheral area which makes the cut. However, the cutting tool may also instead consist of any other suitable material, and may, for example, be provided with diamond grains in the peripheral area carrying out the cut.

Af fig. 3 ses det, at en skærevinge afviger 35 fra cirkelsegmentformen, idet afstanden fra tænderneIn FIG. 3, it is seen that a cutting blade deviates 35 from the circle segment shape, the distance from the teeth

Claims

162228 26 for the axis of rotation of the wings is smaller at the leading edge 27 of the wing than the distance from the teeth 26 to the axis of rotation at the trailing edge 28 of the wing, so that there is a rear cutting of the circular shape of the wing of a size d. the cutting edge is selected such that the cutting depth of the teeth 26 at the trailing edge 28 corresponds to the cutting depth of the teeth at the leading edge 27 of the subsequent wing at a given cutting speed of the cutting bridge and at a given rotational speed of the cutting tools. When the next wing is in the cutting position, the cutting bridge has already moved the piece d farther down, and by means of the back cutting a regular cut is obtained.

1. Cutting apparatus having several, in one plane, adjacent to each other, rotary cutting tools, arranged so as to move in a one-way supporting beam so that they engage with each other and so that they are operated synchronously with each other without contact. rotationally opposite to the direction of rotation, characterized in that the cutting tools are formed as thin and substantially octagonal blades (18) with two radial cutting edges, which blades are set at 90 ° relative to the adjacent blade (s).

Cutting device according to claim 1, characterized in that the cutting edges (25) of the blades (18) are designed such that their radial distance from the axis of rotation of the blades, seen in the direction opposite to the direction of rotation, is still increasing and that the increase of the distance is chosen thus depending on the speed of movement of the girder and the speed of the cutting tools, the radial distance from the rear edge