DE1704311B1 - METHOD AND DEVICE FOR MANUFACTURING STACKS OF STRIPS OF FOERMIG FLAT MATERIAL PIECES FROM FOAM PLASTIC - Google Patents

Description

3 4

for cutting the roll have a cutting device open at the top receiving slots, wherein is provided which has a known heatable bearing blocks 30 with pivotable stops 31 has ren cutting wire, which are provided in the radial direction. The lower parts of the bearing blocks 30 can be moved towards and away from the roller, that is, in FIG. 1 omitted to be behind it to subdivide the stack of plate-shaped 5 components to make recognizable. Between the camp track sections a vertically movable bracket 30 known per se, a cutting device 24 is provided, Bares cutting unit with a frame and with the implementation of a radial separating cut several heatable cutting wires provided through the material web wound to form the roll 18 is, and that the plate is suitable for picking up the stack. The cutter 24 includes a shaped track sections a per se known between io vertically arranged frame 32 with a see a position near the cutter for spaced column parts 34. On the outside the Roll and one in the cutting unit for the side of the column parts 34 are arranged vertically Stack inserted position with wheels on cylinder 36, the pressure lines 35 Slide rails movable table is provided. and 37 via a reversing valve not shown here

With the help of the above-mentioned method or the one referred to with a hydraulic or pneumatic pressure Apparatus is connected to a rapid and precise source of resources.

divide an elongated into turns to one in each of the cylinders 36, of which in FIG. 1 only

is shown in a spiral roll of wound material, a piston 38 reciprocates

Strip-shaped pieces of flat material possible. After movably stored, from the upper end of a

Carrying out the first, radial cut, the insulated rod 40 can extend upwards. Between

Material wound into a helical roll- the upper ends of the rods 40 extend therefrom

Track to form a stack of superimposed, in the we electrically conductive resistance wire, z. B. a

essential flat plate-shaped track sections cutting wire 42 made of a nickel-chromium alloy,

be handled. Then only a few of them are connected to a power source (not shown)

further cuts are required to plate the stack. In order not to endanger the operator,

strip-shaped track sections in partial stacks - the power source only has a voltage of 25 to

ger to subdivide pieces of flat material. This cut- 40 volts.

te can be carried out exactly, since the plate-shaped In the position shown in Fig. 1 is the

Track sections extended during the cutting process, chip cutting device 24, d. h., the

The role 18 already has a radial cutting wire 42 on its base 30 without a voltage and yet immovable

rest. cut through. The table 14 is essentially

One embodiment of the invention is rectangular in shape and has a flat top surface 46

Drawing shown and is shown in more detail below after the severing of the roll 18 by means of

described. It shows cutting device 24 the resulting, essentially

Fig. 1 is a partially shown in center section 35 Chen arranged concentrically and in the shape of a circular arc Side view of the device along the line 1-1 in curved track sections to form a stack F i g. 2, wherein the cutting table, which has a stack of 26 superposed, essentially flat, superimposed, plate-shaped track sections plate-shaped track sections 28 unwound values made of foam, can unite its starting position. The table 14 can take along the running rail, 40 nen 12 can be moved to the right until it reaches the in

F i g. 2 the device according to FIG. 1 in plan- F i g. 1 stile view indicated with dash-dotted lines, development within the total of designated 60

According to FIG. 1 and 2 is the device for the manufacture of the cutting unit 16 occupies. That set of stacks of strip-shaped flat material frame 60 has a rectangular shape with vertical pieces Made of foam plastic with a total of 10 top supports 62, which are drawn at the four corners of a rectangle. The device 10 comprises are arranged in a kes that is larger than the rectangular stand parallel sliding table 14 arranged from one another. The supports 62 are formed by upper lengthways 12 as a support for a table 14, which strive on 64, lower longitudinal struts 66 and cross struts these running rails 12 are connected to one another between a bearing bracket 68. At the top and bottom mounted roller 18 of an elongated, spiral 50 ren longitudinal struts 64 and 66 are four pairs below the same shape Rolled material web of foam on the other aligned, arranged at longitudinal intervals plastic, the bearing blocks 70 arranged to the left of the table 14 in the drawing. In the bearing blocks 70 is shown, and between a cutting unit are threaded spindles 72 supported by Axialla-16, that is shown to the right of the table 14, proceeding ger 74 are secured against vertical movements, can. 55 Nuts 78 work with the threaded spindles 72

The roll 18 from an elongated, spiralför- together, which is attached to a rectangular cutting frame wound web of foam plastics 82 are attached. This cutting frame 82 The material is already broken up into strips 27 of a suitable width and can thus be lowered when the spindles 72 are rotated cut so that longitudinal slots 29 are present. be raised.

The strips 27 are spirally formed on a core 20 60 on the longitudinal sides of the cutting frame 82 are

wound with an axis 22. In this spiralför- electrical conductor 86 arranged, which at one end

In the form of a coiled-up shape, the roll 18 is connected to flexible electrical leads 88 on the outside

starting position in the device 10. The roller 18 are. Furthermore, cutting wires 90 are provided which

has a very low weight, around 27 kg, a lane conductor is connected to the conductors 86. the

ge of about 1400 mm and a diameter of 65 cutting wires 90 extend across the

about 920 mm. Cutting frames 82 and are parallel to each other in

The roller 18 is arranged by means of its axis 22 of the core at distances that the desired longitudinal

20 stored in stationary bearing blocks 30, which are made according to the dimensions of the partial stacks to be produced

Foam plastic sheets correspond to pieces. The transverse dimensions of the pieces of flat material are determined by the longitudinal slots 29.

A pulley 92 is attached to the upper end of each of the four threaded spindles 72; over all pulleys 92 runs an endless V-belt 94. One of the threaded spindles 72 is at the upper end Another pulley 96 is attached, which is connected by a V-belt 98 to a pulley 100 is connected on the shaft 102 of an electric gear motor 104 which is mounted on an upper corner of the Frame 60 is arranged. The gear motor 104 can be reversed so that the threaded spindles 72 in can be rotated in either direction to raise or lower the cutting frame 82. To the The gear motor 104 is switched on and reversed in a known manner, here Control circuit (not shown), which can include one or more limit switches 106.

In describing the mode of operation of the device 10, it is initially assumed that an elongated Material web made of a thin foam plastic flat material into several long strips 27 is subdivided, between which longitudinal slots 29 are located and which form a spiral-shaped roller 18 are wound on the core 20 supported by the shaft 22. The roller 18 is by means of her Axis 22 is stored in bearing blocks 30. The cutting wire 42 of the cutting device 24, which is initially in its lower position, an electric current is then supplied while the Cylinder 36 are actuated. The heated cutting wire 42 is thereby moved upwards and cut while the roller 18 in a radial section until it is near the bottom of the core 20 to Standstill comes. The cutting wire 42 is then withdrawn.

To release the roller 18, the stops 31 are pivoted downward so that the circular arc curved track sections are unrolled on the top 46 of the table 14 and laid flat can. The flat web sections 28 come to lie on top of one another and form a stack 26. Since the web sections 28 of the stack 26 from the lowermost web section 28 to the top web section 28 become progressively shorter, suggesting the reduction in the diameter of the spiral-shaped Roll 18 is returned in the direction of the core 20, the ends of the stack 26 each form a step arrangement.

The table 14 is then along the rails 12 in the space below the frame 60 of the cutting unit 16 drove. The gear motor 104 is then put into operation around the threaded spindles 72 to rotate in such a direction that the cutting frame 82 lowers. Simultaneously power is supplied to the cutting wires 90. When the cutting frame 82 is lowered, the hot cutting wires 90 a way through the horizontal stack 26 of the thin strips 27, so that the strips 27 are divided into shorter sections, the length of which depends on the sections the cutting wires 90 aligns.

Once the cutting frame 82 has moved so far down that the cutting wires 90 a Have reached location in the immediate vicinity of the top 46 of the table 14, actuates the cutting frame 82 one or more limit switches 106 by means of which the control circuit is initiated, the geared motor 104 to redirect. The cutting frame 82 is then raised again.

The stepped end portions of the stack 26 constitute waste material which is appropriately disposed of or can be used for other purposes.

After the end of the cutting process and after the cutting frame 82 has returned to its in Fig. 1 has reached the upper position shown is the table 14 moved to the left together with the subdivided stack 26 of pieces of flat material. After removing the cut material, the device is ready to carry out another Work cycle ready.

1 sheet of drawings

Claims (3)

terials, it is therefore difficult to use the named material as a simple packaging, insulating or shock absorbing material. 1. Method of making stacks of strips- For dividing foam blocks into strips Pieces of flat material made from foam-shaped pieces of flat material are further processing plastics became known by cutting and dividing a ren, which, however, because of the difficult elongated, in turns to a spiral processability of the foam as a result of this Roll of wound material web, because softness and flexibility are not optimal characterized in that provide several results. So is z. B. (German usage turns the roller (18) in a substantially io pattern 1 812 848) a device for gatterartiradiale The plane was cut through and the essentially concentric cutting of thermoplastic synthetic foam was made known, in which the sheet section material pieces or plates formed curved in flat arches foamed placed on a table (14) carrying them to form a block of material on a horizontal holding plate Stack (16) one on top of the other, essentially 15, after which the cutting gate, consisting of Flat, plate-shaped track sections (28) wound from a horizontal frame with a tension between them and that the stack (26) through th electrically heated cutting wires over the further cuts in partial stacks of strip-shaped foam blocks, with the cutting wires Pieces is divided. Divide the foam block into panels. With this 2. The method according to claim 1, characterized in that a foam block can be used indicates that the cutting and dividing are only divided into plates, their size corresponds to the block cross-section by means of heated cutting wires known per se. Another sub- (42, 90) takes place. division is not provided. With the well-known 3. The device for carrying out the method should also not achieve any exact cuts according to claim 1 and 2 with a storage 25 bar, since the resulting vertical panels only bake-mounted role, characterized in that rest on their narrow sides and accordingly that for cutting the roll (18) a cutting unit can be protected against falling over by side pressure device (24) is provided, which must have a. When retracting the cutting wires, i. H. known heated cutting wire (42) when moving the cutting gate must be has, which in the radial direction to the roller (18) 30, the cutting wires therefore again a path through the is movable back and forth from this, that lanes to the foam block. Subdivide the stack (26) of the plate-shaped If, on the other hand, the cutting gate is arranged vertically Track sections (28) are arranged vertically, which is known per se, and the foam block is horizontal kai movable cutting unit (16) with a movable base through the cutting gate Frame (60) and moved with several heatable 35, one also obtains an inexact one Cutting wires (90) is provided and that for cutting, especially at the end of the block, because of the Picking up the stack (26) of the plate-shaped cut loss path sections caused by the cutting wires (28) a per se known between and the associated collapse see a position near the cutting device of the panel webs. There is also the risk of (24) for the roll (18) and one in the cutting 40 that due to the weight of the superimposed aggregate (16) for the stack (26) inserted foam panels this again after the cut Bake together with the wheels (52) on the rails. (12) movable table (14) is provided. The invention is based on the object Method for dividing an elongated roll wound in 45 turns into a spiral Celts material web made of foam plastic in strip-shaped To create pieces of flat material that are characterized by high speed and accuracy, so that the effort for the flat material The invention relates to a method and a 50 pieces low. In addition, a device Device for producing stacks streifenför- created for carrying out this method wermiger Flat pieces of foam plastic den. by cutting and dividing an elongated wound in turns to form a spiral roll according to the invention at the outset Material web. 55 solves the fact that several turns of the roll cut through in a subdivision of an elongated plane that is not essentially radial in turns and the genes wound into a spiral roll are arranged essentially concentrically and Material web in strip-shaped flat pieces of material curved in a circular arc it is customary (Austrian patent specification 199 864) to cut into a stadium on a table that supports them Material web wound up in a cutting ropes lying on top of one another, essentially flatter Bring direction in which these unwound plate-shaped web sections are unwound and cut into individual pieces of flat material and that the stack is divided into pieces by further cuts. This process for producing strip-shaped pieces of strip-shaped pieces is subdivided. Purpose Pieces of flat material are tedious, as the cutting and dividing is done to disintegrate them splitting of the unwinding strip of material extremely 65 by means of heated cutting wires known per se, Many cuts are required to make a particular device to perform this number from pieces of flat material. Because of driving with a roller on bearing brackets the great expense for cutting up the Ma- is characterized according to the invention in that