DE102011101381B4 - Thermal cutter for foams of different types - Google Patents

Abstract

Thermal cutting device for foams with an electrically heatable cutting wire which is stretched between a U-shaped bracket, at least by a spring, characterized in, - that a current contact for the cutting wire is provided at the end of the bracket as an acute-angled cooling body in such a way that the cutting wire is guided in the middle.

Description

The present invention relates to a thermal cutter for bodies made of foams of different types, such as Styrofoam, rigid foam thermal insulation panels, flexible foams and many more, which can be carried out both as a hand-held and as a desktop unit. There are some cutters of this type are known in which a heatable cutting wire, which is stretched between a U-shaped cutting bracket at least by a spring, which should compensate for the thermal expansion of the heating wire.

From the prior art of DE 600 15 731 T2 a surgical instrument by means of cutting wire is known, in which the cutting wire is guided through a central hole on both sides to adjustable arms.

Next is a thermal cutter with an electric cutting wire from the DE 10 2007 061 047 B4 known, wherein the temperature of the cutting wire is maintained via a control circuit at least to the desired state-by-state.

The disadvantages of the known cutting burrs are that they can not perform equalization cuts, since the cutting wire, in particular at an angle position of the U-shaped cutting bracket, a distance from the material; a fact that also has a disadvantageous effect on the construction as a tabletop device.

Other disadvantages of the known cutters are that they are often designed only for a temperature range, as different temperatures would also different extensions of the cutting wire result, which makes the cutter both dependent on the material, as well as the cutting speed and the cutting quality can adversely affect.

The material dependence is due to the different required cutting temperatures of the materials, which can only be solved by appropriate temperature levels. However, the resulting expansion differences can not be compensated by a fixed tension and would have to be designed accordingly flexible.

Other disadvantages of the known cutters are that they are equipped with a conventionally wound transformer, and at several different voltage taps and voltage inputs, quite a few pounds can be difficult. This also has a negative effect on the already high cost of such a transformer. Furthermore, such a heavy transformer can not be attached to a cutter for weight reasons, if you want to do it by hand. Such a desired guidance of the device by hand would require a corresponding supply line from the transformer to the cutter, which in turn would be associated with further costs.

Further disadvantages of the known cutters as a tabletop device are that, for example, they can not accommodate different measuring tools and guide tools, since no holding devices are prepared for this purpose. Instead, often angles and units of measurement are printed on the work surface, which are no longer visible when placing the material, and thus serve more for an optical purpose. This limits the variety of applications, which should be given just in a tabletop, very strong. By the possibility of recording additional tools, the variety of applications can be considerably increased. This makes a correspondingly flexible holding device mandatory.

Proceeding from this, the present invention has the object to provide a cutting device of the type described with which also Egalisierungsschnitte can be performed, which has a plurality of temperature stages, in which the tension of the cutting wire can be adjusted continuously, which via a light transformer has, and has a holding device for measuring tools and guide tools. Furthermore, it should cover both the professional area as well as the hobby and model building sector.

This object is achieved by the features of claim 1. Advantageous embodiments of the device can be found in the dependent claims 2-17.

In this context, results for the cutting device, a further embodiment in which, the U-shaped cutting bracket can also be made flexible, with the good sliding properties, the purpose of preserving the early cutting wire wear can be dispensed with. For this purpose, at least one side strut of the U-shaped cutting bracket is equipped with a joint which pushes or pulls the side strut outwards by a tension or compression spring.

With a tap changer, the different voltages are designed to be adjustable on the cutter.

Since the cutting wire is a resistive load, you can with a modified version of an electronic transformer (switching power supply), the cutting device with the different voltages supply. This change relates to the secondary winding, which are usually carried out in conventional electronic transformers with three parallel windings. Instead of the parallel-connected winding, these are connected in series and provided with a corresponding number of taps, which give the different temperature levels. Due to the high efficiency of more than 90% and the wide tolerance range for input voltage and power frequency switching power supplies can be designed for use with very different mains voltages, for example, from 85 volts to 255 volts and from 47 heart to 63 heart. Thus, a switching power supply to the conventional transformer is much cheaper, much lighter and suitable for the international power grid.

In order to compensate for the different temperature expansions of the heating wire, and also set the optimal tension of the cutting wire, and to be able to check this, is with a tension or compression spring, similar to a spring balance, the pulling or pushing weight of the spring balance is a set screw , created an optimal adjustment, which can be applied both within the U-shaped cutting bracket and outside of the U-shaped cutting bracket.

For an optimum holding device for measuring and guiding tools, holes are uniformly arranged on the tabletop device, on the support of the materials to be cut, which serve as a clamping device for additional tools and at the same time reduce the weight of the device. By deformation or displacement of the holder which fits into the holes, the additional tools can be fixed easily and quickly. Alternatively, the guide tools can also be mounted with a guide rail which can be both attached to the work surface and integrated.

The resulting benefits provide more design options that would not have been possible with the usual design of the known cutters. Since you can perform with the cutting device according to the invention, even at an angle position of the cutting bracket, Egalisierungsschnitte, and thus can cut on a flat surface, you have the opportunity, for example, on a wall, with the hand cutting device according to the invention to cut directly on the wall Styrofoam plates , It is particularly advantageous in this context if the hand cutting device according to the invention is equipped with commercially available telescopic rails with self-closing. Furthermore, the hand cutter should be equipped with a support frame with a gap on which the cutting wire can pass and a depth stop. Thus, the device operator can perform straight and angled guided cuts both on the wall and on any level surface, which allows a high operating speed. Furthermore, it is not only possible with the depth stop to make correspondingly deep notches, but also by setting the material thickness on the depth stop directly on a stack of material to cut. It is also advantageous to integrate a spirit level on or in the support frame in order to perform vertical or horizontal cuts directly on the wall, which is useful in breakthroughs such as doors and windows.

With a laser and a hook that can be hung in a scaffold pole, it can be further perfected, with the operator of the cutting edge on the one hand can see better, and the hand cutter on the other, when working on a scaffold, flexible at any time, on a scaffold pole can hang. This can be done easily by the very light electronic transformer.

Another advantage of the table cutting device according to the invention lies in the simpler construction form resulting from the fact that the cutting wire is centered even at the most different angular positions exactly flat at the bottom of the U-shaped cutting bracket. This requires no special position of the axis of rotation of the adjustment angle, since these, as usual with many tools, can be arranged in the middle of the support surface. It is advantageous in this context, set up a height adjustment at the adjustment angle, which allows a selected minimum height of the U-shaped cutting bracket, but not limited to the top, which has the advantage of both notches and profiles to cut with stencils, such as Styrofoam trim strips , It should also be noted with particular advantage that the weight of the U-shaped cutting bracket is designed to be adjustable, so that the U-shaped cutting bracket can be more easily adapted to the profile of the templates by passing through the profile templates. This can be done optimally with a combination of a tension spring and the height adjustment at the setting angle. The height adjustment is equipped with a fold-out or sliding as needed holder for holding the U-shaped cutting bracket, which can be fixed in a guide rail is freely movable, and also can be fixed if necessary, equipped. The tension spring is also arranged freely movable and fixable in a guide rail, and with a rope or belt over a pulley with the height adjustment connected. It is essential here that the tensile forces can be applied to the height adjustment adjustable, which can be realized both with a compression spring and with a rubber or a coil spring. When using a rubber cord rope or belt can be dispensed with, and when using a spiral spring, the rope or the belt, as with the Gurtwickler, can be kept on train.

In this way, the operator can regulate the height if necessary, fold out or fix the fold-out or sliding holder of the height adjustment and fix, as well as bring the height adjustment to the desired height and also fix.

This feature is also useful for keeping the U-shaped cutting bar at a working height and for more convenient alignment of the material to be cut on the work surface. In this context, the fold-out or retractable height adjustment bracket does not necessarily have to be fixed. Furthermore, this can be used for transport security. In order to be able to regulate the weight of the U-shaped cutting bracket, the device operator only needs to release the fixing of the height regulation, and to fix the tension spring, which is connected to the height regulation via a deflection roller, to the optimum tension. Advantageously, the height adjustment is provided with a measuring scale and the tension spring, provided with one, the height adjustment customizable, tension indicator. This suggests, as a guide tool to use a sliding, equipped for example with standard telescopic rails work surface, which is designed for the holding devices of the table cutting device according to the invention, the sliding guide tool can fix the profile templates as possible in the outer region, since there the cutting wire has the highest load capacity , where a rolling device would be recommended directly on the contact block. Furthermore, for such work a switchable remote switch or switch would be advantageous, which is to be plugged into the cutter.

As far as the model construction area is concerned, in which, for example, a trapezoidal wing is to be cut out of Styrofoam, wherein the beginning and end have different cutting lengths, but which must be carried out at the same time, then the modeler needs either a great deal of skill in being able to guide the manual cutting device or a corresponding guide device , which is able to adapt the manual cutter flexible to the different cutting lengths. This further problem can be realized by a circular movement of the hand-cutting device from an adjustable radius. This object is achieved in that an axis of rotation is created, which can be attached, for example, to a papering table, and has a pivot, which for receiving a suitable radius in the form of a telescopic rod or preferably a steel cable, which depending on the required radius on Attach hand cutter. In addition, the steel cable is equipped at least on one side with a tension spring, which helps to maintain the tensile stress of the steel cable. Reference to the drawings, the embodiments will be described in detail.

Show it:
Contact block with cooling area and rolling or sliding device.

1.0 - Perspective view of two opposing contact blocks with heating wire.

1.1 - Partial exploded view of the rolling or sliding device in the perspective view of two opposing contact blocks with heating wire.

1.2 - Exploded view contact block.

1.3 - Alternative contact block.

Reference number from the contact block:

• 1.0 - 1.1 - 1.2 - 1.3

LIST OF REFERENCE NUMBERS

1

carrier block

2

Heizdrahtführung

3

Cooling contactor

4

connecting sleeve

5

Contact fixing

6

Residual heat cooling area

7

power connection

8th

heating wire

9

Heizdrahthalter

10

Thermic separation

11

Contact area with guidance (tip)

12

Cavity for power connection

13

Cavity for connection sleeve and heating wire holder

14

Carrier for the dispenser or glider

15

Rollers for dispensers

Show it:
Spring tensioner infinitely adjustable on the outside and inside with tension indicator of the heating wire according to the spring balance principle.

2.0 - Perspective view of the built-in spring tensioner without outer shell.

2.1 - Exploded view of the built-in spring compressor.

2.2 - Perspective view of the attached (outside) spring tensioner.

Reference number of the spring tensioner:

• 2.0 - 2.1 - 2.2

LIST OF REFERENCE NUMBERS

1

Contact block

2

Panel heater wire holder.

3

power connection

4

power connection

5

Stellrad spring tensioner

6

Shaft with thread.

7

Tube with foot and thread

8th

Corner connector with shaft and wire passage

9

Display of tensile forces

10

power connection

11

insulation

12

Heizdrahthalter

13

Pointer for traction display

14

Side legs of the U-shaped cutting bracket

15

compression spring

16

Recess for tensile forces indicator

17

Recess for heating wire holder

18

Actuation for the heating wire change

19

mainspring

20

Holding bracket tension spring

21

carriage

22

Joint for the setting shaft

23

Joint of the side leg of the U-shaped cutting bracket

Show it:
- Simple hand cutter

3.0 - Perspective view of the simple cutting bar with radius guide.

3.1 - Exploded view of the radius guide

Show it:
- High speed cutter

4.0 - Perspective view of the high-speed cutter in the starting position.

4.1 - Enlargement of the adjustment angle range in perspective.

4.2 - The material support area from below, in perspective, in the starting position.

4.3 - Working position in perspective view.

4.4 - Working position from above as a detail in perspective.

4.5 - Working position from the side as a detail in perspective.

4.6 - Stop the high-speed cutter in perspective.

Show it:
- Table cutter

5.0 - Perspective representation of the tabletop device in the starting position.

5.1 - Operating position from another side with guide tool in perspective view.

5.2 - Enlargement of the adjustment angle range in operating position.

5.3 - Table device with sliding table and guide tool in perspective.

5.4 - Enlargement of the adjustment angle range from the side with sliding table in perspective.

5.5 - Exploded view of the adjustment angle in perspective view.

5.6 - Operating position from below in perspective view.

5.7 - Exaggeration of the weight reduction of the cutting bar.

Reference numerals of the cutters:

Simple hand cutter

• 3.0

Quick cutter

• 4.0 - 4.1 - 4.2 - 4.3 - 4.4 - 4.5 - 4.6

Table cutter

• 5.0 - 5.1 - 5.2 - 5.3 - 5.4 - 5.5 - 5.6 - 5.7

LIST OF REFERENCE NUMBERS

1

Fixation angle

2

Rotary axis adjustment angle

3

feet

4

Open angle bracket

5

attack

6

Side of the material support

7

Fixation stop

8th

depth stop

9

Fixation depth stop

10

Spring tensioner with display

11

U-shaped cutting handle

12

Attachment switching power supply

13

Telescopic rail with self-closing

14

Bracket telescopic rail

15

Setting spring tensioner

16

work edition

17

Attachment of the material support

18

angle display

19

railsW

20

Holder cutting bracket

21

dimension display

22

step switch

23

Handle with switching power supply and push button.

24

Contact block

25

Cutting wire (heating wire)

26

Gap of the material support

27

Handle with push button

28

Holes clamping device

29

Height adjustment with fixation

30

Sliding holder with fixation

31

Adjustable pulley

32

Setting tension with display

33

Pointer tension

34

Recess for sliding holder

35

connection cable

36

contact bar

37

Contact customer

38

telescopic rail

39

On and switch

40

Socket for additional switch or pushbutton

41

bungee

42

Measuring range rubber

43

Sliding table with template holder

44

template holder

45

Clamp holder sliding table

46

Dispenser or slider on the contact block

47

Switching Power Supply

48

Connections contact rail

49

Banjo bolt rotation axis

50

Additional switch or button

51

joint

52

Holder for radius guide

53

Tension spring for radius guidance

54

Rope for radius guidance

55

Fixation of the rope in the radius guide

56

Rotatable drum of the radius guide

57

Fixing the radius guide

58

spirit level

59

Drilling for rope

60

Rotary axis of the drum

Show it:
Stop with clamp holder

6.0 - Perspective view of a simple stop with clamp holder.

6.1 - Perspective view of an angle stop with clamp holder.

6.2 - exploded view of simple stop with clamp holder

Reference signs of the attacks:

• 6.0 - 6.1 - 6.2

LIST OF REFERENCE NUMBERS

1

attack

2

Retaining rubber 1

3

Retaining rubber 2

4

Locking lever

5

eccentric

6

pusher

7

Long hole

8th

Bolt attached to the stop

9

Bolt firmly on the slide

10

Guide for slide

11

Spring Pin

12

angle stop

13

Fixation angle stop

14

Right rotary axis angle stop

15

Left rotary axis angle stop

• 1.0 – 1.1 – 1.2 – 1.3

With reference to the following drawings, the contact blocks are described in detail.

• 1.0 - 1.1 - 1.2 - 1.3

In 1.0 two opposing contact blocks with heating wire are shown in perspective, which explain the structure and function of the contact block in more detail. The contact block is angled so that the heating wire ( 8th ) the summit ( 11 ) of the angle. The angle of the contact block should have at least one angle which should reach the later cutter. The carrier block ( 1 ) is used to hold the individual components and later mounting on the U-shaped cutting bracket. From the electricity connection ( 7 ), the cooling contactor ( 3 ) the heating wire ( 8th ) provide power. Thus, only between the contact blocks, from the top ( 11 ) of the one contact block to the tip ( 11 ) of the other contact block, the heating wire ( 8th ) electrically heated. At the top ( 11 ) of the cooling contactor ( 3 ) there is a groove, which corresponds to the heating wire diameter and is embedded at an angle upwards.

This groove serves to guide, and the residual heat absorption of the heating wire ( 8th ), wherein the heating wire through the cooling area ( 6 ) and on the heating wire guide ( 2 ) is guided along, and so on the Heizdrahthalter ( 9 ) can be attached. The heating wire holder ( 9 ) is designed so that it can be omitted if not needed. In 1.1 are also shown two opposing contact blocks, but the carrier ( 14 ) for the dispenser or skid and the roller ( 15 ) for the dispenser as a partial explosion drawing. The carrier ( 14 ) and the roller ( 15 ) together form the dispenser, both parts being made as one piece, giving the slider, and in the cooling area ( 6 ) of the support block ( 1 ) are plugged. This dispenser or skid ( 14 ) should with the contact block ( 1 ) be designed across forms. Furthermore, the tip ( 15 ), the unwinder or slider, with the heating wire ( 8th ), which is the tip ( 11 ) of the contact block angle results in alignment. The detailed structure of the contact block can be in 1.2 shown in more detail on the basis of an exploded view, wherein the first cavity ( 12 ) as the passage for the power connection ( 7 ) and the second cavity ( 13 ) for the connection sleeve ( 4 ) and the heating wire holder ( 9 ) is provided. Should the carrier block ( 1 ) are made of plastic, for example, a thermal separation ( 10 ) between the cooling contactor ( 3 ) and the support block ( 1 ) makes sense, with the use of electrically conductive material to ensure appropriate insulation. The resulting advantages are clearly visible, the heating wire can always lie flat on the ground even with different angular positions. In 1.3 an alternative contact block is shown, which is not designed angled. It can also be used to make plane cuts, but not in different angular positions. One would need a corresponding guide in simple plan sections, as described for example in the patent DE 10 2009 017 421 B4 is described, as well as the simple table cutter, which can dispense with such benefits.

• 2.0 – 2.1 – 2.2

Based on the following drawings, the spring tensioner will be described in more detail.

• 2.0 - 2.1 - 2.2

In 2.0 the built-in spring in the side part of the U-shaped cutting bracket is shown without outer shell. The heating wire holder ( 12 ) on the contact block ( 1 ) is replaced by the heating wire holder ( 2 ) of the spring compressor, and by the display of the tensile forces ( 9 ), the tensile forces of the heating wire are displayed. An operation for the heating wire change ( 18 ) is on the display ( 9 ) attached or integrated, which relieves the heating wire by pressing down, and thus creates enough space for Heizdrahtwechsel. The power connection ( 3 ) is passed through the pipe ( 7 ) from the contact block ( 1 ) through the corner connector ( 8th ) led to the longitudinal strut, where the power connector ( 4 ) is available for further connection work. Alternatively, this can also be arranged in an inner corner of the side part. The wave ( 6 ) is threaded over the pipe ( 7 ), and is guided by the corner connector to the outside, and by a thumbwheel ( 5 ) rotatably arranged so that the tensile forces of the heating wire can be adjusted continuously.

2.1 shows the structure of the spring compressor as an exploded view.

The spring tensioner should be designed so that this in the side part ( 14 ). The side part ( 14 ) is provided with a recess ( 16 ) for the power indicator and a second slot ( 17 ) for the heating wire holder. The pointer ( 13 ) gets into the pipe ( 7 ), which has a holding foot to the twisting of the tube ( 7 ), let in, followed by the compression spring ( 15 ). The heating wire holder ( 12 ) is inserted into the first recess ( 17 ) of the side part ( 14 ) and the power indicator ( 9 ) in the second recess ( 16 ) of the side panel. The pipe ( 7 ) with the pointer ( 13 ) as well as with the compression spring ( 15 ) is shown from below first by the power indicator ( 9 ), and then through the heating wire holder ( 12 ) introduced. The aperture ( 2 ) serves to cover the second recess ( 16 ) and depending on which material is used, also for insulation.

2.2 shows an externally mounted spring tensioner in perspective view. The bracket ( 20 ), which is attached to the longitudinal strut of the U-shaped cutting bracket, via a tension spring ( 19 ) with the carriage ( 21 ), and a wave ( 6 ), the tensile forces are adjustable on the side part ( 14 ) transfer. The sled ( 21 ) is with a pointer ( 13 ) designed so that the rotation of the carriage ( 21 ), and the tensile forces from the tension indicator ( 9 ) can be read. The on the side part ( 14 ) transmitted tensile forces are transmitted through the joint ( 23 ), as leverage over the side part ( 14 ) transmitted to the heating wire as a tensile stress. The joint ( 22 ) is used to compensate for the movable side part ( 14 ), where on the wheel ( 5 ) The tensile forces can be adjusted continuously. The adjusting wheel ( 5 ) can also be directly on the shaft ( 6 ), the shaft ( 6 ) then at the joint ( 22 ) must be rotatably mounted. This variant would be useful if this spring compressor is to be used for a device with guide rails. The tension spring ( 19 ) the leverage must be strong enough.

The heating wire can be very easily by moving the side part ( 14 ) switch. The advantages of this are significant, since the tension of the heating wire can be adjusted continuously and read. It is now possible to manufacture devices with different temperature levels, since the different dimensions can be compensated by the infinitely adjustable spring tensioner.

• 3.0 – 3.1

With reference to the following drawings, a hand cutting bracket and a radius guide are described in more detail.

• 3.0 - 3.1

3.0 shows in perspective view a simple hand cutting frame with the already developed advantages. The cutting bar is equipped with an electronic transformer ( 12 ), also switching power supply ( 12 ) genant whose secondary coil is connected in series, and has several outputs equipped. Via a tap changer ( 22 ), the different voltages are set, the first voltage level should be above the minimum load, and the last voltage level may not exceed the maximum load of the switching power supply. In between any number of voltage levels can be arranged. This setup has been experimentally extensively and successfully tested. When pressing the button on the handle ( 27 ) the heating wire ( 25 ) with the appropriately set voltage, which at the tap changer ( 22 ) can be selected, heated, and is on the spring compressor ( 10 ) with the setting wheel ( 15 ) set to optimum tension. Through the contact blocks ( 24 ), which also at angular position of the cutting bracket the heating wire ( 25 ) can rest flat on the ground, for example, on a wall even of internal angles from Egalisierungsschnitte possible without the need for a guide tool.

Thus, bumps and transitions can be corrected easily, quickly and cleanly. Likewise, all edge cuts by applying a guide in the form of a bar, spirit level or the like, perform. This makes it ideal for breakthroughs such as windows and doors. Another button ( 50 ) would be advantageous, which is either integrated as standard with fixed, or designed as an accessory, for example as a handle with a button ( 27 ), which is equipped with a cable and plug so that it can be attached to the cutting bracket, and can also be plugged into the switching power supply. Thus, the cutter can be operated from another position. Next is in 3.0 a radius guide shown as an accessory, which by a fastening ( 57 ) can be fixed to a support. This has a rotatable drum ( 56 ) on which a rope ( 54 ) fixed to the appropriate length ( 55 ), and via a tension spring ( 53 ) with a holder ( 52 ), on the cutting bracket ( 11 ) is connected.

3.1 shows an exploded view of the radius guide with explanation of the essential points. The fastening of the radius guide ( 57 ) has a rotation axis ( 60 ), this is suitable for receiving a rotary body, wherein the rotary body can accommodate an axis in the form of rope, rod or telescopic rail. This axis can be determined to the desired length on the rotary body ( 55 ), and connect to the cutting bar.

• 4.0 – 4.1 – 4.2 – 4.3 – 4.4 – 4.5 – 4.6

In the following drawings, a cutter, which is aptly referred to as a high-speed cutter, will be described. Particularities which can be better seen in certain figures are mentioned accordingly.

• 4.0 - 4.1 - 4.2 - 4.3 - 4.4 - 4.5 - 4.6

• 5.0 – 5.1 – 5.2 – 5.3 – 5.4 – 5.5 – 5.6 – 5.7

With the high-speed cutter, the advantages gained so far are particularly effective. The U-shaped cutting bracket ( 11 ) is used on telescopic slides with self-closing ( 13 ), and so can be driven down. This is in 4.3 particularly easy to recognize. Due to the self-retraction of the telescopic rails ( 13 ), the U-shaped cutting bracket ( 11 ) always returned to the starting position. With the handle ( 23 ), which is also the switching power supply ( 23 ) and via the connection cable ( 35 ) is powered, the high-speed cutter can be transported and turned off. The angle bracket ( 4 ) has several functions. About the screw connection ( 17 ) this carries the work pad ( 16 ), which consists of two identical halves with a gap as gap ( 26 ) for the passage of the heating wire ( 25 ) consists. Furthermore, the angle bracket has a rotation axis ( 2 ), which are centered and aligned on the material support side ( 6 ), which are better in 4.2 is visible, and the reception of the telescopic rail bracket ( 14 ) serves. It should be noted that the work edition ( 16 ), seen from above, to the gap ( 26 ), which is better in 4.4 can be seen. The taper should be at least equal to the maximum angle of the cutter so that the cutting wire ( 25 ) at angular cuts unhindered through the gap ( 26 ) can drive. The telescopic rail bracket ( 14 ) has an angle fixation ( 1 ), which over the axis of rotation ( 2 ), both right and left on the angle bracket ( 4 ), with the help of the angle display ( 18 ), can be fixed in a desired angular position. The minimum material thickness that can be cut on a flat surface is determined by the distance between the feet of the device ( 3 ) and the material support ( 6 ) certainly. That in the 4.0 to 4.6 described high-speed cutter can cuts off a material thickness of 2 cm to 27 cm, and has a cutting width of 114 cm. Furthermore, the high-speed cutter has a depth stop ( 8th ), which in 4.4 and 4.5 better to see. This is with the rail ( 19 ) adjustable mounted on the cutting bracket, and can with the fixation ( 9 ) are determined at the desired depth. The depth stop ( 8th ) has a dimension display ( 21 ), which is divided into measuring ranges, for example for 90 degrees, 60 degrees, 45 degrees and 22.5 degrees. The different scales can be adjusted on the rail ( 19 ), and on the cutting bracket holder ( 20 ), wherein when using the outer spring compressor in 2.2 , both sides of the cutting holder ( 20 ) would be available for the measurement scales. The depth stop ( 8th ) finds its stop position exactly in the middle of the gap ( 26 ) of the work assignment ( 16 ), what a 4.4 is particularly easy to recognize. The work assignment ( 16 ) has a spirit level ( 58 ), which can often be very useful when working on a facade. In 4.6 you can clearly see that the attack ( 5 ) is in two parts, and in the middle, for example by an eccentric is contracted, and thus sufficient holding pressure on the sides of the work pad ( 16 ) to secure the position of the stop. The high-speed cutter and the simple hand-cutting tool make up a very good pair. Since in such work seldom a worker works alone, both devices can be used independently and at the same time for the corresponding work. For example, with facade insulation, you can cut directly onto a stack of material with the high-speed cutter without having to remove the material from the stack first. With the simple hand-cutting bar, leveling cuts as well as the edge cuts can be carried out quickly, easily and cleanly. In the following drawings, a table cutting device will be described which, in addition to the advantages described so far, offers even more advantages. Particularities which can be better seen in certain figures are mentioned accordingly.

• 5.0 - 5.1 - 5.2 - 5.3 - 5.4 - 5.5 - 5.6 - 5.7

5.0 shows the Tischneidgerät in the starting position with fixed cutting bracket ( 11 ) for transport safety. The transport lock is adjusted with the height adjustment ( 29 ) and its sliding holder ( 30 ) is used in the following way:
In the starting position the height adjustment ( 29 ) with Holder ( 30 ) shifted so that the holder ( 30 ) in the recess ( 34 ) of the cutting holder ( 20 ) can be pushed, and then can be determined with the respective fixations. This can be in the 5.2 and 5.4 most clearly. To be able to cut notches with the table cutter, the height adjustment ( 29 ) with Holder ( 30 ) to the desired height. The cutting bracket ( 11 ) is then placed on the holder ( 30 ) of height regulation ( 29 ), and thus, according to the set height, limited to the bottom. The material to be cut can now be pushed through the cutting wire according to the dimensions of the notch. By pulling upwards the cutting clip ( 11 ) the notch is completed. Such notches can also be made in the middle of the material. By using a remote switch or remote switch, which in the socket ( 40 ) of the switching power supply ( 47 ), such work can be made even easier, with a wireless pushbutton would be much more pleasant. In 5.2 is the switching power supply ( 47 ), as well as the socket ( 40 ) and the switch ( 39 ) of the remote switch. Furthermore one can in 5.0 the angle bracket ( 4 ), which, as with the high-speed cutter, is secured by the fastening ( 17 ) the two identical work requirements ( 16 ) wearing. In contrast to the high-speed cutter, the table-top device has the material support side ( 6 ) above, and thus the taper, which is necessary for angle cuts, at the gap ( 26 ) below. The gap ( 26 ) with the rejuvenation can be in 5.6 recognize well.

In other words:
The rejuvenation of the gap ( 26 ), so that the cutting wire ( 25 ) even with angle cuts unhindered through the gap ( 26 ), at least equal to the maximum angle of the cutter, and is on the opposite side of the material support ( 6 ). Furthermore, the taper of the gap, at least the immersion depth of the heating wire correspond.

To be recognized further in 5.0 is the telescopic rail holder ( 14 ), which at the table device, the guide rails of the height adjustment ( 29 ) and the tension adjustment ( 32 ) as a guide.

5.1 shows the table-top cutter in the working position with resting cutting bracket ( 11 ) and attached guide tool. The cutting bracket ( 11 ) lies on the holder ( 30 ) of height regulation ( 29 ), the holder ( 30 ) does not necessarily have to be fixed. The material to be cut can now be used with the help of the guide tools ( 5 ) on the material support ( 6 ) and by releasing the cutting bracket ( 11 ) get cut.

The release of the cutting bracket ( 11 ) by simply moving the holder ( 30 ) of height regulation ( 29 ). Because the cutting wire ( 25 ) when the cutting bar ( 11 ) in the nip of the work rest ( 16 ), the material to be cut, even at this starting position, on the material support ( 6 ), and by pulling up the cutting clip ( 11 ), get cut. The holes ( 28 ) of the work assignment ( 16 ), which serve as a clamping device of the measuring tools and the guide tools are arranged so evenly that the work support ( 16 ) for both halves of the material support ( 6 ), without offset of the holes ( 28 ) can be used. Furthermore, the holes ( 28 ) so that they can accommodate the tools, for the transport and the packaging, also in length. In 5.1 can still be seen that the power supply to the cutting bracket ( 11 ) wirelessly. This wireless power supply is connected to the contact rail ( 36 ) and the contact customer ( 37 ) realized in the following way:
In 5.5 the complete adjustment angle is shown as an exploded view. The switching power supply ( 47 ) is connected via the connection cable ( 35 ), and with the tap-changer ( 22 ) is set to the desired heating level. The set voltage level is connected by a cable through the axis of rotation ( 2 ), which via a hollow screw ( 47 ), directly through the telescopic rail bracket ( 14 ), and can at this point via the connections ( 48 ) the contact rail ( 36 ) with the selected voltage. The contact customer ( 37 ) accesses via its sliding contacts, the supply voltage to the contact rail, and transfers it to the cutting bracket. In this way, the work area remains cable-free, a fact that is particularly advantageous in a light duty router. Already three connections ( 48 ) on the contact rail ( 36 ) are sufficient to equip the cutter with a switch for an external button or a switch with cable or via radio.

5.3 shows the table cutter with sliding table ( 43 ).

The sliding table ( 43 ) via the clamps ( 45 ) on the work assignment ( 16 ) of the table cutter fixed. The structure of the sliding table looks like this:
The clamp holders ( 45 ) are designed to fit into the clamping device ( 28 ) of the table cutter, and the working surface of the sliding table ( 43 ) wear. Furthermore, the sliding table with the same clamping device ( 28 ) equipped like the table cutter itself, and also has template holder ( 44 ). These are arranged so that the stencils with the dispenser or slider ( 46 ) of the contact block ( 24 ) can be sampled, which is in 5.4 can be seen most clearly. Advantageously, the template holder ( 44 ) and can also accommodate tools such as an axis of rotation for cylinders and conics, which can hold and cut the material, both with and without a template. This axis of rotation is preferably designed as a joint and can via a carrier plate on stencil holder ( 44 ) of the sliding table ( 43 ) are fixed. It would also be advantageous to provide a marking on the carrier plate of the axis of rotation so that it can be attached to the template holder (with the aid of the measuring scale). 44 ) can be optimally aligned. For this purpose, one should generally mark, even with stencils. Due to the fact that the axis of rotation in both template holders ( 44 ) can fix in different positions, and the axis of rotation has a joint, can be easily cut cones. It should be noted here that the rotary axis height should coincide with the cutting wire height, which means that the maximum rotational axis height must not exceed the maximum cutting height, minus the table height of the table cutting device.

From the advantages described above results in a variety of new cutting options. It can be cut profiles of any kind, such as end strips, Stuckleisten, and cones and cylinders with and without profiling along the direction of rotation.

In order to be able to scan the profile of the templates more easily, the weight of the cutting clip ( 11 ) can be reduced, which in principle by a counterweight in the form of a tension spring, compression spring, coil spring or simply with a rubber, can be realized.

5.7 shows the weight reduction using a rubber as a cutout. At the tension indicator ( 32 ) is the rubber cord ( 41 ), and via the pulley with the height adjustment ( 29 ) connected. The pointer ( 33 ), which is to indicate the tensile forces, is attached to the rubber cord, and uses the reference range between tension indicator ( 32 ) and the attachment of the pointer ( 33 ) on the rubber cord ( 41 ).

• 6.0 – 6.1 – 6.2

In the following drawings, the clamping device for the measuring and guiding tools will be described in more detail.

• 6.0 - 6.1 - 6.2

In 6.0 a simple stopper is shown in perspective. The stop has two retaining rubbers ( 2 ) ( 3 ), wherein a retaining rubber ( 3 ) by the locking lever ( 4 ) is moved. By this displacement, the guide tool is fixed in the holding device. In 6.1 the stop is equipped with an angle stop. The angle stop ( 12 ) is about a rotation axis ( 14 ) with the stop ( 1 ), and can be fixed ( 13 ) are fixed in the desired angular position. In 6.2 is a simple stop as an exploded view in perspective, and shows the exact structure of the clamping device. The attack ( 1 ) is with a guide ( 10 ) for receiving the slider ( 6 ) Mistake. The slider ( 6 ) is fitted with a fixed or integral bolt ( 9 ), for receiving a retaining rubber, equipped. Furthermore, the slider ( 6 ) over a slot ( 7 ), which serves as a passage for the second bolt ( 8th ), the second bolt ( 8th ) at the stop ( 1 ), and the second retaining rubber ( 2 ). The eccentric is through a hole of the stop ( 1 ) with the Federsplint ( 11 ) rotatably mounted, and equipped with a lever. By adjusting the locking lever ( 4 ) the slider, ( 6 ) shifted by the rotation of the eccentric, and the attached retaining rubber ( 3 ) is moved with, with the firmly attached to the stop retaining rubber ( 2 ) stop.

Claims (17)

Thermal cutting device for foams with an electrically heatable cutting wire, which is stretched between a U-shaped bracket, at least by a spring, characterized in that - a current contact for the cutting wire at the end of the bracket is provided as an acute-angled cooling body such that the cutting wire is guided centrally. Thermal cutting device according to claim 1, characterized in that - the angle has a groove. Thermal cutting device according to claim 1 and 2, characterized in that - the angle is fixed to a support block, - that the support block has a cutting wire attachment, and - that the support block is designed to receive a scraper or slider or this forms itself. Thermal cutting device according to claim 1, characterized in that - that the spring tension is infinitely adjustable, and - that the spring tension is readable. Thermal cutting device according to claim 1, characterized in that - a side part of the U-shaped bracket having a joint, and - that this side part by force, in particular tensile or compressive forces, is moved. Thermal cutting device, according to claim 1, characterized in that - the cutting wire is electrically heated with a switching power supply, with at least one output. Thermal cutting device according to claim 6, characterized in that - the switching power supply is regulated at several outputs via a tap changer. A thermal cutting apparatus according to claim 1, wherein the U-shaped bracket is movably connected to a work support at two rails at an adjustable angle, characterized in that - the adjustable angle connects the work supports, and - the adjustable angle has an axis of rotation, and that the adjustable angle has an angle scale. Thermal cutting device according to claim 8, characterized in that - the work support has holes for receiving tools. Thermal cutting device according to claim 9, characterized in that - the tools have holders, and - that the holders can be fixed by deformation or displacement. Thermal cutting device according to claim 9, characterized in that - a sliding table can be fixed on the work support. Thermal cutting device according to claim 11, characterized in that - the sliding table has holders for receiving templates and additional tools, and - that the sliding table has holders for fixing to the work support. Thermal cutting device according to claim 12, characterized in that - an additional tool has a rotation axis. Thermal cutting device according to claim 1 with a radius guide, characterized in that - the radius guide has a fixing for fixing, and - that the radius guide has an axis of rotation, and - that on the axis of rotation an adjustable axis is mounted, and - that the axis of a fastening to the cutter. Thermal cutting device according to claim 1, characterized in that - an additional operation for the commissioning of the cutting device is integrated, or can be attached. A thermal cutter according to claim 1 or 8, wherein the U-shaped bracket is movably connected to a pair of rails at an adjustable angle to a work support, characterized in that - the weight of the U-shaped bracket can be reduced. Thermal cutting device according to claim 1, characterized in that - the electrical connection to the U-shaped bracket, a contact rail.

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