DE1715444U - DEVICE FOR CUTTING FOAM. - Google Patents

Description

48106 * -7.655

B.rlin, on June 3, 1955

A 5526739a Gm

AlJcett Altiaäriclaohe lietteniveräe GmbH ·, Berlin-Boreigwalde _t

Holzhäuser Strasse 62-70

~ - * -τ - w

Facility for cutting dohaumatoff

The innovation relates to a device for the unleading of foam. Due to its honeycomb-shaped, very loose and flexible outer structure, mechanical cutting tools such as ilesaem and saws, for example, have very little resistance, so that child labor carried out with it leads to unsatisfactory results. The body stretched on the table of the 3 chneidiaa achine in question is deformed by the clamping forces and by the scimit that occurs when cutting with an oare or better so that dimensionally accurate cuts are possible.This disadvantage occurs particularly during production of very thin JPo lien and profiled rods of great length or of multidimensional, gctexuwnten surfaces on ·

The innovation avoids the existing ones on this C-area Disadvantages due to the use of one or more electric heated cutting wires and regulation of their temperature and / or the Werkatcff feed a such that the foam to the Interfaces completely evaporated

It has been shown that, especially in the case of longer, "uninterrupted Cut sides, differences between the theoretical

see and the feed actually required, which is necessary for a single * wall-free cut is required. Therefore, according to the innovation, the aforementioned feed control takes place, and ζ ar automatic »

If it is necessary that the advance is a ^, roS, dnnxi i ^ t the "urxaeeinffekt In the unit of time at the Sonit ta divide on the foam so that a sufficient level of effect can be recorded. The Jchaumatoff presses continuously with its advance movement The tools are nowhere, which may even be destroyed in the process.If, on the other hand, the cutting temperature is too high, that is, the effect of heat on the pollutant at the interfaces is strong or lingers for a long time, then the target zone is unnecessarily enlarged and a> rather foam In the period of time it can be melted down, since the TSinsciimelaBeitt and the uni-ohmic iron temperature are lower ^ l3 which require high values for the evaporation The surface is encrusted at this point and becomes unsightly brown discolored in the case of v / elastic Schauni fabric.

The cause of this evil stands located in the -bhän £ accuracy _t which between Dr "httemperatur, de λ Drahtdureiwiesser, the Ohm ¹ ffideretand see the cutting speed and the cutting width is. You be avoided if an automatic feed control specified in the further above It has also come about that, especially when cutting with long iliac wires, a greater drop in tempera is regularly recorded at the moment, if at the beginning of the cutting procedure.

when the heating wire just touches the foam. In this The wire cools down to such an extent that this low temperature no longer causes evaporation of the Sohausiatoffea can·

This problem is eliminated in the interior of the fire by switching the heating wire to a higher electrical voltage, the so-called Verda-apfun £ S3 _x . This high load on the heating wire is only necessary during the passage through the foam and is desirable, because otherwise the wire may burn out is abgesolialtet again "what can be done by a sm lisch the fascine attached Endsclialter ·

"More details and lines of fire result eicii au; i the following description of the sohtjaiati on the ^ eiohaung and look figuratively aar ^ e ^ tell new facility

This arrangement has made it recognizable in the drawing, a ..... (continued 3page 4 of the original designation 3bearion up to last page 7) ·

"or desirable, waj ^ T the wire otherwise in the # er circumstance / n would burn out ^ r Therefore, provision has been made that / im A quick look at the coughing up of the He> <! ^ Rahtes from the Sc / iaumstcff the overvoltage is switched off immediately like> hear, / as through

line attached lilndschal / er

. fish of maj
can be required.

\ Veitare> details and characteristics of noise identification ^ e The slöiT from the following description of / on the Time lapse shown schematically and graphically

uIrbuiig; "/ S.! This device has, as the drawing, let detect a table 1 on which the to sonneidende foam, ■ block to a foam 2, rests. On both sides of 'iisches 1 feed rollers 3 are rotatably mounted on to the extent that pins 4 or the like are provided and are used to advance the display material block 2 against the cutting tools. The pins 4 grip the foam without any tension and push it forward , a friction gear 7, a bevel gear and the spur gear pairs 9,10. The setting of the speed of rotation of the feed rollers 3 and thus the feed rate can be done by hand via the handwheel 11 and the screw spindle 12 by moving the smaller Hades of the friction disk gear 7 on the sielle 13 In order to regulate the .ibstandes of the two Vorscnubwälzen 3 from each other, which depends on the width of the

k> ^

Foam blookes 2 must be set are those Spur gears 1 * ±, 15 of the uöic'en Zaimr .derpaare 9.10 in Swivel arms 16,17 mounted around the axes 18,19 of the Spur gears 20,21 of the pairs of wheels 9, IC are versohwenkuar. The pivot arms 16, 17 can be in the respective position with the aid of a clamping screw 22, which is in a slot is led, reads v / ^ tm ^ l. DIg si- arrangement is for; ■ .. ■■ ^ r.i "'- Xi;> o". -Mkarm can be seen on the drawing. I) a the feed rollers 3 on the extended axes of the pivotable Toothed wheel door 14,15 sit, thus becomes her Austand enlarged depending on the pivoting direction of the arms 16, 17 or scaled down.

furthermore, v / i θ the drawing shows are in iorm of Cutting tools 24 designed in the form of wire soles are provided, which sit on so-called tool holders 25, 26. These Vüerliz eughalt he are provided with handles 27,28 and can be replaced easily and quickly with their help will. The cutting tools 24 are advantageously firmly seated and isolated in these tool holders 25, 26. Form of the cutting tools, which in the exemplary embodiment are wire loops can be arbitrary and is chosen according to the ^ u ;; chiifudoLfjf; n Frex'il.

For automatic control of the feed rate is used according to the embodiment when too large Temporary change in position of the cutting tools For this purpose, the .erkzeughalter 25,26 with their Stored ends so that they can be accessed, the one wandering forwards falls away

Foam block 2 exerted on the wire loops 24 Druoiv over a certain ttert, then? / Earth the tool holder 25,26 duroh the donaumstoffblock 2 over the tools 24 rotated about its longitudinal axis. As a result, the arms 29, 30 sitting on the tool holders 25, 26 are at the same time pivoted. Each of these arms carries a pin 31 or 32, which in turn holds the contact 34 or 33. As a result of Pivoting movement of the arms 2 £, 3C v / ground with them connected contacts 34,35 of the fixed .Kontakten 33,36 printed, whereby the current, which, as long as the Contacts 34,36 and 33,35 were in contact with one another, via the part b-c of the resistor 3? got to engine 5, now flows directly to point a and thus the entire resistor 37, i.e. switched from ac into the circuit is and consequently the motor 5 runs more slowly. Lets the Then the springs 38,39 pull the axes 29,30 and thus the tool holders attached to them 25.26 back in the longitudinal position in which the arms are butt against the stops 40,41 and the contacts 34,36 and 33,35 are closed and the motor 5 sohneller again runs. The resistance 37 can be through the contact slide adjusted according to the various child status will.

The described binary guarantees a perfect Sons of the foam, as the pins of the feed rollers 3 only penetrate so deeply into the material during the feed, as is sufficient to take with you. The material receives

so no bias. As a result of the automatic control of the advance stroke speed, there is an absolute guarantee that the in the time unit of the Tools transferred to the foam is sufficient, A complete evaporation of the molten substance is possible reach.

The invention is not limited to the embodiment shown and described. 3c, in place of the pre-pressure rollers fitted with pins ^, other types of, ζ, 'ή. corrugated feed rollers c. like. kick. Furthermore, e.g. the foam to souneidenda rest and the tool or tools are moved. In such a ⁽¹⁾ the feed rollers and the associated gear mechanism are all superfluous. Thus, for example, the tool holders can be slidably guided in guide tracks that run in the longitudinal direction of the 1 In addition, the table 1 with the foam to be cut attached to it can be moved in a manner similar to the table of a planing machine and the cutting tools can be seated above it, similar to the planing machine used for cutting steel The invention is also not limited to a straight feed or cutting movement. It is entirely conceivable that the foam is cut on the basis of the turning lathe principle. Instead of the holders Zd, Zo together with the

to be replaced, also only know the tools in the xialtern from / ochseluar and the latter are themselves arranged in a stationary manner. In general, in the years of the invention, η ι. ¹ :: d ': i: Loaren amendments possible.

P a \ t claims

Yl) Process for cutting elastic plastics, in particular Sciiaums ^ pff o. The like., Characterized in that the cutting takes place by means of one or more heated wire tools (24 j, especially one or more electrically heated wires.

2.) Verfanren n-; ch i Anspruqn, characterized dadurcn that the Voraohubgeschwindigx: eit automatically in dependence on the temperature of cao_: tkr ocn..eidv / 9rkzeuge (24) such g8re _o nlt v.ird that by ( As or the heated cutting tool (s) (24) melted plastic (2) at the interfaces completely through. the poor of the cutting tool (s) (24j) is evaporated.

3.) The method according to claims 1, characterized in that the feed rate is automatically regulated depending on the cutting pressure between the cutting tool or tools (24) and the foam (2) so that the melted part of the foam at the interface ^ rostiub I ¹ Iu ¹ GiI di j i. '.. rue des or de ^ cutting tools (24) is evaporated.

Claims (1)

M 48106 * -]. 6. Berlin, 3 * 6.55 A 5524739 “Oa Sohutsanaprüohe 1 ·) Installation of foam, characterized by one or more electrically heated wires · sun cutting of · the · Sohauastoffes and duroh regulation of the pre-windage of the foam · depending on the wire temperature and / or the wipe of the wire or wires and the foam prevailing cutting pressure in the manner * ® ^ß a complete «evaporation of the melted part of the ataumatoffee at the Soänittstella takes place · 2 ·) Device according to claim 1, characterized by an am Table or floor slides open a switch to switch up the electrical voltage of the wire or the wires when entering the foam body and a limit switch that sits on the table or slide to switch your voltage down when leaving the show fabric 3 ·) Device according to napruch 1-2 »characterized in that dta or the cutting wires (24) via one or more electrical contacts (34,36j 33 # 35) are so close to a resistor (37) in the circuit of the pre-lifting motor (5) that only a partial resistance when the contacts are closed and with open contacts the total resistance was in the circuit closed to cieh 4 ·) Sij ^ riohtung according to the movable Toll (53 be »w # 34) Every xUmt & lctee ait dem or the wires (24) in connection and through your at au £ Γθ3βα feed & ruoJt occurring change of position ^ e is controlled 5 ·) Slnrlohtung after 4n * prucn 1—4 # thereby ^ ekezmseieiuiet »the 41 · movable .oataicte (33 besw« 54) en the ο cixield wire term (23 * 26) aitxen, which oe possibly 1 inabesojodere rotatable geXtt * t ds @ uie a su gto Lea Voraoliubdruoic im üiaoe eln «r q aase lohen. 6 «) Elnriohtttnfl aach äaspraoh -5, doduroii geJcen & eelohnet» deft the cutting wires (24) connected to the old (25 »26) feet and these are interchangeable " 7 ·) Establishment according to .nspruoh 1-6, thereby ge & ennseleimetf dai & io interchangeable headband wires let the holders sit " 3 «) Bini'ichtung according to Anapruoh 1 * 7» marked by with 3tif <» tea (4) pre-lifting rollers (3) attached to their circumference 9 «) device according to An ^ pruoh 1 * 6 # thereby geKenneelohaet» dai the feed whale (3) according to the size dea su echneidMb · the i.una te toffee (2) ν era divisible and « 10 ·) Elnrlohtung according to claim 1-9 _f thereby identified, On the Voraohubwalsen (3) with the -ohwenjcrödern (14 »15) a ·· cogwheel drive« (9 »10) are connected» the old of the Vorechuba »tear (5) coupled 1st 11 ·) Sinriohtttng according to claim 1-1O ₉ daduroh eeitennBelahnet »d» I gwleohen the cream of the cake (9 # 10) and the Voreciiubmotor (3) a, in particular atofenloae, adjustable by hand gear ratio (7) is 12 *} device according to Anapnioh 1-11 _t geicennaelohnet duroh ale iaebasozidere kreiaföxmigc Sonlaufea formed son wires, which are arranged at their two ends in the holders (25,26) feet or removable ·