EP0928671B1 - Cutting device for plastic material - Google Patents

Abstract

The swiveling axis (37) lies between the guiding device (15) and the platform (13) in the plane of the latter and in the cutting plane of the cutting wire (19). The platform (13) and a bearing (29) for the swiveling guide (15) lie adjacent to and at a distance from each other on a crossbar (11) and the blade support (17) is guided between the platform and the bearing. A supporting leg (67) slides inside the crossbar which runs parallel to the cutting wire (19). A mitering plate (39) on the crossbar is perpendicular to the cutting wire and enables the swiveling movement of the guide to be fixed at any given position. The swiveling guide comprises two bars (81) guided through two holes in a slide and is located on only one side of the equipment.

Description

The present invention relates to a cutting device for Plastic body, in particular rigid foam thermal insulation panels, with a pad for the body, one on a support that is movable relative to the edition Cutting wire and one associated with support and compared to the support around an axis in a bearing pivotable guide device for guiding a Shift between support and circulation.

From the European Patent EP-A-0 124 001 a cutting device is known, in which one is used for cutting an edition lying foam body with the edition the foam body against an electrically heated one Cutting wire is guided. The cutting wire is between two Arms of a bracket arranged under the support, which arms around and from the bottom of the pad reach over this. The temple is in different Positions can be attached to a leg. Between the Bottom of the pad and the bracket is a guide arranged, which the relative movement of wire and support leads. The edition is opposite this tour pivotable. The swivel axis is parallel to the cutting wire spaced from the underside of the edition by two Locking screws given.

Next is a cutting device of the type mentioned known which to lead the support and the Cutting wire has two guide rails, which are pivotally arranged on a support board. Out The swivel axis lies with this device for design reasons for the guide rails at a distance above the support.

When cutting bodies, the desired one Body measurement from the cutting plane on the support measured, the body with an edge on the measured Positioned and then the hot cutting wire through led the body. Depending on the angle of the cutting plane penetrates the cutting wire is at a different location on the edition through the material to be cut. To know from where must be measured, must therefore with the mentioned Cutters disadvantageously every time from the cutting wire be assumed. To do this, especially when changing the cutting angle of the cutting wire in the support plane brought, the desired size on the edition are held, cutting wire and support from each other removed, the body to be cut on the support under the Cutting wire and finally the body be cut.

It is therefore an object of the invention To create cutting device of the type mentioned which is a section of a body regardless of Cutting angle always from the same place on the support can be measured from. This allows a scale to be fixed be arranged on the edition, the scale of which is the distance of the wire exit line from the clippings.

According to the invention this is achieved in that the Swivel axis between the guide device and the support arranged in the plane of the support and in the cutting plane is.

This can be achieved in that the camp for the Swivel axis at a distance next to the contact surface is arranged and the support for the cutting wire between this camp and the edition can be managed. This will preferably the support and the bearing of the pivot axis arranged a carrier part. The swivel axis must be in same distance from the support part as the support surface and at the same distance from the guide device as the Cutting wire can be arranged.

Because a cutter, especially a portable one Cutting device, should be as small as possible, both in terms of price as well as when transporting the device is an advantage, however nevertheless have the possibility of a large cutting length the support and the length of the wire is advantageous adjustable. Therefore, the support is advantageous only on guided on one side, but free on the other. Is too Advantageously, an extendable or retractable stand on the device arranged. For this purpose, a carrier beam is advantageously parallel to Cutting wire provided and a main leg slidable therein guided and lockable.

A miter plate on the carrier beam is advantageous arranged practically perpendicular to the cutting wire on which the pivoting movement of the guide device under any Swivel angle can be locked.

An advantageous guide device has two Rod elements and a slider, the rod elements are guided through two guide holes in the glider. Ball slide bearings are advantageously arranged in the slider and The bar elements are hardened so that the guide is practical is without play. Since a housing is very rigid, the guide device advantageously has a housing in which the bar elements are arranged. The glider is expediently on the support and the housing on the support part arranged, the reverse is also possible.

Fig. 1

eine perspektivische Skizze eines erfindungsgemässen Schneidgeräts, und

Fig. 2

einen Schnitt durch die Führungseinrichtung, die Schwenkachse und den Trägerholm.

An exemplary embodiment of the invention is described below with reference to the figures. It shows:

Fig. 1

a perspective sketch of a cutting device according to the invention, and

Fig. 2

a section through the guide device, the pivot axis and the beam.

The cutting device according to FIG. 1 is essentially off a support beam 11, thereon a support 13 and one pivotable guide device 15 and on this one Bracket 17 with an electrically heatable cutting wire 19, and a stand 21 for setting up the cutting device compiled. A hollow profile serves as the support beam 11. There are holding plates or brackets 23 on both sides which the pad 13 is attached and a holding plate 25th arranged to which a transformer 27 is attached.

An axle bearing 29 is arranged on the carrier beam 11, in which the guide device 15 is pivotally mounted is. The housing 31 of the guide device 15 has two Tabs 33 and 35, which are guided in the axle bearing 29 Hold axis 37. The pivot axis of the guide device 15 (Axis 37) lies in the cutting plane of the cutting wire 19 and in the plane of the contact surface 13. The Guide device 15 strikes with an adjustable Stop 30 (only in Figure 2) at right-angled cutting plane on the support beam 11. A miter plate 39 is fixed to the Carrier beam 11 and the holding plate 25 connected. It points concentric about the pivot axis 37 a circular Slot 41 through which a locking screw 43 on the tab 35 is guided. The guide device 15 can with the locking screw 43 in any Swivel angle on the miter plate 39 can be determined. The Tab 35 is designed as a pointer, which on a scale indicates the set angle on the miter plate 39. With a locking screw 45 in this slot 41 can Stop can be determined at a selectable point, so that the guide device repeats between 90 degrees and can be moved back and forth at any angle by hitting one or the other stop.

In the guide device 15, which is later based on the Figure 2 is described in more detail, the bracket 17 is guided. The Bracket 17 is made of two parts that can be moved relative to one another composed. On a base part 47 is a Extension part 49 attached. This is all in one Holder 51 slidably mounted and with a Locking screw 53 found.

The cutting wire 19 sits on one side with a Cutting wire holder (not visible) in the base part 47. The Cutting wire holder is electrical with respect to base 47 isolated. On the other hand, the cutting wire 19 is over the rounded end 55 of the extension part 49 out where he is in a notch. The end of the cutting wire there 19 is attached to a spring 57 and the spring 57 to the Locking screw 53 suspended. The spring 57 can also on Extension part 49 be hooked. It tensions the Cutting wire 19. The bracket is extended by moving it of the extension part 49 in the holder 51, the slides Cutting wire 19 in the notch over the end 55 of the Extension part and the spring 57 is stretched.

The bracket 17 is attached to a plate 59 which fixed with a slider 61 (only Figure 2) Guide device 15 is connected. On the plate 59 is a housing with a switch 63 arranged therein. The Switch 63 is connected to transformer 27 via a cable connected and interrupts a circuit through the cutting wire 19. The cutting wire 19 is on the one side over the cutting wire holder and on the other Side over the holder 51 and one against the base part 47 Insulated mounting screw for this holder 51 with the Circuit connected. Power cables are in the hollow profile of the Base 17 introduced and connect the switch with these places.

On the pad 13 are at an angle between 0 and 90 degrees adjustable stops 64,64 'left and right of the Cutting wire 19 arranged. On the stops 64,64 'are Scale scales are drawn in, which change when the Stops 64.64 'perpendicular to the cutting wire on the Cutting line between the cutting plane and the support plane orientate. In the support plate 13 is a grip hole 65 so arranged that the focus of the merged device on a line perpendicular to the longitudinal edge of the support 13 through the grip hole 65. The cutter can so Handle can be carried like a suitcase.

The support beam 11 is a square tube. Inside the Square tube is the only and square leg 67 of the Stand 21 performed. With a locking screw 69 and one The jaw 71 is this leg 67 in the carrier part 11 ascertainable. The leg can be used to set up the cutter extended and locked. The device can then open a cross bar 73 placed on the leg and e.g. on a wall be rejected. At the upper end of the carrier part 11 is one Articulated support 75, with which the cutter is leaned can be. By the pivoted out support 75 is the Distance between the top of the pad and the surface, against which the support 75 supports the device so large, so that this surface is usually also with an extended bracket 17 not in contact with the end 55 of the extension part 49 arrives. In addition, this support 75 can be designed as a table be on which a foam body by hand can be cut with the cutting wire. This The table is vertical or at an angle to the cutting wire 19th

In Figure 2 is a section through the guide device 15 and the beam 11 shown. On the beam 11 is the bearing 29 attached. The axis 37 sits in it Axis 37 is not the tab 33, as is the one in FIG. 2 visible tab 35 connected. The tabs 33 and 35 are on Housing 31 of the guide device 15 attached. In the The guide device 15 has the plate 59 cut on the left, with which the bracket 17, not shown, is connected. The housing 31 is cut on the right. Are above and below End plates 77 and 79 welded to the housing 31, in which two parallel round rods 81 sit. On this hardened round rods 81 guided with ball bearings Glider 61. In the housing 31 is parallel to the round rods 81st a gap is arranged in which two stops 83 are slidably arranged. By noting the Stop 83 can move the cutting wire 19 narrowed or the distance between cutting wire 19 and Edition 13 can be fixed. This is for example for the Cutting grooves, tongues and folds, as well as cutting of a body of thickness useful.

Now use the cutter to put an insulation board on certain size must be cut as follows proceed:

First, the device is set up by the stand 67 pulled out of the beam 11 and with the Locking screw 69 is fixed and the device with the unfolded support 75 is leaned against a surface. The The device can also be attached to a scaffold pole using a scaffold clamp attached or for example on a stack of insulation boards be placed. Then the device needs a power source get connected. After closing the circuit the cutting wire 19 by operating the switch 63 Cutting wire 19 electrically heated. Now the two Stops 64,64 'and the guide device 15 in the desired angles determined. The bracket is from the Pad pulled away and a plate on pad 13 and on the stops 64,64 'placed. Your right or left edge is based on the information available on the stops 64.64 ' Scales aligned so that the distance between Cutting wire 19 and the corresponding edge of the desired Plate size corresponds. Now the cutting wire 19 from passed against and through the plate at the front, while this is recorded. This can also be done for miter cuts Measured on one of the rulers. It depends on the dimension of the longer or the shorter side of the plate is known the measure is measured on the scale 64 or 64 '.

Claims (10)

1. A cutting device for plastic material, in particular heat insulating plates made of rigid foam, with a bearing surface (13) for the material, a cutting wire (19) associated with a support (17) mobile relative to the bearing surface (13) and with a guiding system (15) associated with the support (17) and pivotable relative to the bearing surface (13) around a pin (37) in a bearing (29), used for guided shifting between the support (17) and the bearing surface (13), characterised in that the pivot pin (37) between the guiding system (15) and the bearing surface (13) is arranged in the plane of the bearing surface (13) and in the cutting plane of the cutting wire (19).
2. A cutting device according to claim 1, characterised in that the bearing surface (13) and the bearing (29) are arranged at a certain distance from one another at a carrying part (11, 23, 25) and in that the support (17) can be guided between the bearing surface (13) and the bearing (29).
3. A cutting device according to claim 1 or 2, characterised by a bearing girder (11) parallel to the cutting wire (19) integral with the carrying part and by a stanchion (67), mobile in the bearing girder (11) and stoppable therein.
4. A device according to claim 2 or 3, characterised in that a mitre sheet metal (39) is arranged at the bearing girder (11) practically at right angle relative to the cutting wire (19), where the pivoting movement of the guiding system (15) can be blocked at any pivoting angle.
5. A device according to any of the claims 1 to 4, characterised in that the guiding system (15) shows two beams (81) and a slide (61) whereas the beams (81) are guided through two guiding holes in the slide (61).
6. A cutting device according to claim 5, characterised in that the guiding system shows a box (31) wherein les beams (81) are arranged with the slide (61), whereas the support (17) is provided at the slide (61) and the box at the carrying part (11, 23, 25).
7. A cutting device according to any of the claims 1 to 6, characterised in that the support (17) is a yoke whereof the length is adjustable.
8. A cutting device according to any of the claims 1 to 7, characterised in that a guiding system (15) rests on a single side close to the bearing surface (13).
9. A mobile cutting device according to any of the claims 1 to 8 used for cutting heat insulating plates made of rigid foam, characterised in that its bearing surface (13) intended for laying the heat insulating plates is panel-like and is fitted with a handle (65), in that the cutting wire (19), that can be heated electrically and is mobile relative to the bearing surface (13), is fixed to a yoke (17) guided by the guiding system (15), and in that a transformer (27) and at least one stanchion (67) are provided.
10. A mobile cutting device according to claim 9, characterised in that the bearing surface (13), the guiding system (15) and in all cases the transformer (27) are arranged at a carrying part (11, 23, 25), which carrying part shows a polygonal hollow profile (11) wherein the stanchion (67) is mobile and adjustable.

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