EP2633963A1 - Hot wire cutting device - Google Patents

Abstract

The hot wire cutting device (1) comprises a base frame (2), and a rectangular frame structure of interconnected groove profiles (3-5). An upper angular profile section (11) is formed at the upper edge of the base frame and a lower angular profile section (16) is formed at the lower edge of the base frame. An upper guide rail (23) is pivotally mounted at the upper edge of the base frame or on the upper angular profile section and a lower guide rail is pivotally mounted at the lower edge of the base frame or on the lower angular profile section.

Description

The invention relates to a hot wire cutting device for the thermal separation of workpieces, in particular of plastic foam or fiber material.

From the DE 10 2008 044 724 A1 a generic hot wire cutting device has become known, which has a base plate with a pivotally mounted cutting bracket and a base and a support leg for erecting the hot wire cutting device and a carrying handle. Since the base plate is made of solid solid material, the transport of the hot wire cutting device is difficult because of the higher weight.

The object of the invention is to provide an aforementioned hot wire cutting device, which is both simple and portable as well as universally applicable and usable.

The object is achieved by a hot wire cutting device having the features of claim 1. Advantageous embodiments of the invention are specified in the dependent claims.

Characterized in that the base frame of the hot wire cutting device as a particular rectangular frame structure exclusively or substantially from each other connected groove profiles is formed, the weight of the base frame and thus the entire hot wire cutting device is comparatively low, so that the manual transport is facilitated, especially on a construction site.

The connection of the groove profiles is preferably carried out by screwing, but the base frame can also be made by welding or gluing the groove profiles or other solid connections. Fittings can be loosened, so that individual groove profiles can be exchanged if necessary. The base frame can be supplemented in particular when using simple screw through additional groove profiles or frame parts that represent reinforcements or struts. Thus, an initially simple base frame can subsequently be supplemented in a universal manner with further components, which can be frame parts as well as Zusalzbauteile. The individual groove profiles of the base frame can therefore be connected to each other in a plane adjacent to each other, without overlapping groove profiles or fasteners in the thickness or depth direction of the base frame on the joints, whereby the depth is reduced.

The groove profiles are preferably light metal or aluminum extruded profiles, in particular with a rectangular cross section. Such a groove profile may have on at least one of its peripheral sides a longitudinal groove which is undercut and is suitable in a known manner for receiving fastening means such as screws or screw heads. As a groove profile basically each profile element is referred to, which has at least one designated as a groove means for mutually connecting or fixing other components and continuous or sectionally formed in particular channel-shaped depressions or holding devices for positive or frictional recording of fasteners.

The base itself or the frame forming the frame can thus accommodate other components that are set to the groove profiles. Additional intermediate fixing parts to be attached are not required. If the groove profile at each of its four, for example, peripheral sides or peripheral surfaces Having such a groove, the attachment of other components or devices in a variety of ways on both an operator facing front of the base frame and the hot wire cutting device as well as on an opposite rear or back possible.

The hot wire cutting device according to the invention is suitable in a conventional manner for cutting workpieces such. B. insulation boards made of plastic foams or fibers or the like.

In a preferred embodiment, the hot wire cutting device has an upper angle profile on the upper edge and a lower angle profile on the lower edge of the base frame. Each angle profile is arranged parallel to the edge or to the respective transverse profile element and with this z. B. connected by screwing. The angle profile serves to protect the cutting bracket in a closed or transport position and can also accommodate or provide a pivot bearing for the cutting bracket or its guide component.

Appropriately, it is provided that an upper guide rail on the upper edge of the base frame or at the upper angle section and a lower guide rail at the lower edge of the base frame or at the lower angle section are pivotally mounted, that a U-shaped cutting bracket has two guide arms or guide profiles, which on the two guide rails are slidably mounted, that the cutting bracket is adjustable between a pivoted to the base closed position and a pivoted-use position by means of the two guide rails, and that the cutting bracket has a cutting wire which is stretched between the guide arms or guide profiles and can be heated via a power supply. The cutting bracket is formed sufficiently rigid together with the guide rails, so that an amplification of the cutting bracket by an additional strut is not required.

A preferred embodiment provides that the two guide rails, the two guide arms of the cutting bracket by means of plastic sliding rails displaced to store. Such plastic slide rails are robust and ideal for a construction environment storage and guiding means. However, in principle, other types of sliding bearing can be used such. B. ball bearings. A guide rail and a guide arm mounted thereon thus form a telescopic mounting of the cutting bracket.

The base frame may have a standing device, which has, for example, a front foot and a rear support. Conveniently, the stand or the base and the support are hinged to the base frame so that they can be folded for transport to the base frame and do not increase the base frame.

The base frame thus forms in closed or transport position of the hot wire cutting device with pivoted or applied components a transport protection frame, so that a protective case is not required.

Preferably, the cutting wire is mounted at least on one side by means of a holder or leaf spring in particular adjustable on the guide arm. If the retainer or leaf spring is of limited elastic deformability and can generate a tensile force, wire elongation can be compensated while still maintaining a required wire tension of the cutting wire. Conveniently, the holder or leaf spring in the direction along the guide arm is infinitely adjustable and adjustable, in this way, the cutting wire for oblique cuts can be brought into an inclined position.

If the power supply takes place directly on the cutting wire or its holder, it can be avoided that further components of the hot wire cutting device are supplied with current. This increases operating safety.

Conveniently, the cutting bracket is in its respective pivot position by means of a common lock, in particular with only one screw. fixable, which acts on both guide rails. However, each guide rail can be set with its own locking or clamping.

According to an alternative embodiment it can be provided that the cutting wire is mounted on both sides of a linear guide unit, which is slidably mounted on the pivotable guide rail, on a guide arm of the extendable cutting bracket or on a non-extendable, directly on pivot bearings on the base frame pivotally mounted cutting bracket. The two linear guide units are synchronously adjustable via a drive and move the cutting wire, so that an extension movement of a guide arm or cutting bracket is not required.

Furthermore, a connectable to a power supply transformer of the power supply can be attached to the base frame or an additional component. In particular, the transformer may be used as a cable reel and may have a plug attachment instead of a footswitch. In the transport state, the frame or base frame protects the transformer.

Instead of a transformer attached to the base, a free-standing transformer can be provided as a unit with a foot switch for actuating the power supply.

The groove profiles are suitable for at least one attachment, such as additional supports, vertical cutter. Stop angle or bearing and support devices on the groove profiles can be fixed.

Appropriately, the base frame may have an adjustable and adjustable in particular between a use position and a use position stop for limiting the adjustment of the cutting bracket. If, for example, a groove is to be cut in a workpiece, the groove depth to be cut can be set via the stop.

The base frame can alternatively to a pedestal or in addition to this a holding device, in particular a folding hook device, for attachment to a frame or frame part. The assembly and disassembly of the base frame on the frame or Gerastteil can be done easily without tools. Folding hooks can be pivoted into a space-saving position when they are not needed. Such a holding device or folding hook device can be adjustably mounted on a groove of at least one groove profile and adjustable in height, in particular with respect to the base frame, so that it is infinitely adaptable to different mounting locations or types of frame. The base frame or the holding device may have a sliding bar or the like securing device which prevents the unwanted lifting or removal of the base frame from its suspension point if necessary.

On the base frame, a support rail for a workpiece to be cut can be pivotally mounted, having markings or recesses for fixing the support rail in associated defined pivot positions. The support rail includes, for example, a scale.

Preferably, a support leg is pivotally mounted on the base frame and locked by means of a latch member on the base frame or an additional component in the operating position.

The hot wire cutting device according to the invention is thus variably modifiable, convertible and supplements, is compact and easy to transport in the transport state with low volume and weight and does not require a protective or transport case, but only a light protective cover if necessary.

Fig. 1

in einer Draufsicht eine Heissdrahtschneidvorrichtung auf ihrer Standeinrichtung in Vorderansicht mit ausgeschwenktem Schneidbügel;

Fig. 2

in einer Draufsicht die Heissdrahtschneidvorrichtung der Fig. 1 in Rückansicht;

Fig. 3

in einer Draufsicht die Heissdrahtschneidvorrichtung der Fig. 1 in Seitenansicht;

Fig. 4

in einer Oberansicht den Oberrand eines Grundgestells der Heissdrahtschneidvorrichtung mit der Schwenklagerung des Schneidbügels;

Fig. 5

in einer Draufsicht den unteren Führungsarm des Schneidbügels mit der Schneiddrahtbefestigung;

Fig. 6

in einer Draufsicht einen Unterabschnitt des Grundgestells der Heissdrahtschneidvorrichtung gemäß Fig. 1;

Fig. 7

in einer Draufsicht die obere Schneiddrahtbefestigung am Schneidbügel mittels einer Blattfeder;

Fig. 8

in einer isometrischen Ansicht die Standeinrichtung der Heissdrahtschneidvorrichtung mit daran gelagertem Transformator;

Fig. 9

in einer Draufsicht die Heissdrahtschneidvorrichtung mit eingeklappten Bauteilen in Schließ- oder Transportstellung;

Fig. 10

in einer Seitenansicht die Heissdrahtschneidvorrichtung der Fig. 9;

Fig. 11

in einer Draufsicht den Unterabschnitt der in Fig. 9 dargestellten Heissdrahtschneidvorrichtung;

Fig. 12

in einer isometrischen Ansicht das Grundgestell, das mittels einer Klapphakeneinrichtung an einem Horizontalträgerteil eingehängt ist; und

Fig. 13

in einer isometrischen Ansicht das in Fig. 12 dargestellte und mittels der Klappttakeneinrichtung am Horizontalträgerteil eingehängte Grundgestell in einer weiteren Ansicht.

Embodiments of a hot wire cutting device according to the invention will be explained in more detail with reference to the drawing. It shows:

Fig. 1

in a plan view of a hot wire cutting device on its stand device in front view with swung cutting clip;

Fig. 2

in a plan view of the hot wire cutting device of Fig. 1 in rear view;

Fig. 3

in a plan view of the hot wire cutting device of Fig. 1 in side view;

Fig. 4

in a top view, the upper edge of a base frame of the hot wire cutting device with the pivotal mounting of the cutting bracket;

Fig. 5

in a plan view of the lower guide arm of the cutting bracket with the cutting wire attachment;

Fig. 6

in a plan view of a subsection of the base frame of the hot wire cutting device according to Fig. 1 ;

Fig. 7

in a plan view, the upper cutting wire attachment to the cutting bracket by means of a leaf spring;

Fig. 8

in an isometric view of the stand device of the hot wire cutting device with transformer mounted thereon;

Fig. 9

in a plan view of the hot wire cutting device with folded components in closing or transport position;

Fig. 10

in a side view of the hot wire cutting device of Fig. 9 ;

Fig. 11

in a plan view the subsection of in Fig. 9 illustrated hot wire cutting device;

Fig. 12

in an isometric view of the base frame, which is mounted by means of a folding hook device on a horizontal support member; and

Fig. 13

in an isometric view the in Fig. 12 illustrated and hinged by means of folding trap device on the horizontal support member base frame in a further view.

A hot wire cutting device 1 according to the invention (see Fig. 1 ) Contains a frame-like base frame 2 with two longitudinal sides forming longitudinal profile elements 3 and 4 and two short transverse sides forming cross-sectional elements 5 and 6, which are fixedly connected together in the form of a rectangular frame, z. B. by gluing or welding and in particular by screw. In addition, two profile elements 7 and 8 form bracing struts of the base frame 2. The profile elements 5 to 8 of the base frame 2 are known groove profiles made of metal, in particular light metal or aluminum, their grooves for attaching additional components, for example by means of engaging in the grooves screws or the like are suitable. Each profile element 3 to 8 contains, if necessary, at least one groove 9 on one of its outer surfaces, for. B. four outer surfaces with a rectangular cross-section profile. Thus, the profile elements 3 to 8 at least on one side of the base frame 2, which in use of the hot wire cutting device 1 is a receiving a workpiece to be cut front side 10 (the viewing side according to the Fig. 1 ), at least one groove 9.

A rectangular angle section 11, which likewise preferably consists of light metal, is provided with a first leg 12 on the outer or rear side 13 of the base frame 2 in the region of the upper transverse profile element 5 such z. B. by screws 14 attached (see Fig. 2 ), that its second leg 15 extends at right angles and at a distance from the upper cross-sectional element 5 to the front 10. Such a rectangular angle section 16 is also at the lower cross-sectional element 6 of the base frame 2 in the upper angle profile 11 corresponding Way mounted with its first vertical leg 17, so that its second horizontal leg 18 projects forward.

A U-shaped cutting bracket 19 of the hot wire cutting apparatus 1 includes a central base profile 20 with two mutually parallel leg-like guide arms 21 and 22. The first upper guide profile 21 is slidably mounted on an upper guide rail 23, which on the upper horizontal leg 15 of the upper angle profile 11 of the base frame 2 by means of a pivot joint 24, z. B. a vertical axis or a bolt, is pivotally mounted, and the second guide profile 22 is connected to a lower guide rail 25 which at the lower horizontal leg 18 at the lower angle section 16 by means of a pivot joint 26, z. B. a vertical axis or a bolt, is pivotally mounted, slidably mounted, so that the two guide profiles 21 and 22 on the guide rails 24 and 25 are telescopic.

The cutting bracket 19 is thus pivotable relative to the base frame 2 and can be pivoted to the base frame (in a closed and transport position according to Fig. 9 and 10 ), so that the two guide profiles 21 and 22 with the guide rails 23 and 25 extend longitudinally and above or below the two transverse profile elements 5 and 6 and the base profile 20 laterally outside that longitudinal profile element 3, which removes the pivot joints 24 and 26 of the cutting bracket 19 is, comes to rest and thus only a small thickness or depth of the folded transportable hot wire cutting device 1 results.

The cutting bracket 19 is pivotally connected to the guide rails 23 and 25 from the closed position by at least 90 ° forward to an operator in a use position and can be locked in any intermediate positions, eg. B. by means of a respective clamping lever 27 (see Fig. 4 and 5 ), which is attached to a threaded bolt 28 which is respectively attached to the upper and the lower guide rail 23 and 25 of the cutting bracket 19 and in an arcuate recess 29 of the angle section 11 and 16, 16 together with the Cutting bracket 19 moves, is arranged and against the angle section 11 and 16 is firmly clamped.

The cutting bracket 19 has a cutting wire 30, which at each of its two ends by means of a leaf spring 31 (see Fig. 5 and 7 ) is attached to the respective guide profile 21 and 22 and is kept taut between them, so that expansions of the cutting wire 30 can be compensated by the flexibly adapting leaf springs 31. The leaf spring 31 includes at its front end two holes, are attached to the two screws 32 with nuts holding a mounting hook 33 for hanging an eyelet 34 of the cutting wire 30 relative to the leaf spring 31 electrically isolated. On the mounting hook 33, a power supply line 78 (shown schematically) for the cutting wire 30 by means of one of the screws 32 relative to the leaf spring 31 is fixed, which is arranged by a plug 35 which on the outside of the base profile 20 of the cutting bracket 19 in the region of the lower guide arm 22 is (see Fig. 1 and 3 ), is guided over the lower guide arm 22 of the cutting bracket 19 to the screw 32 and the fastening hook 33. A pressure switch or button 36 is also attached to the outside of the base profile 20 of the cutting bracket 19 for switching on and off the power supply. The power supply line can also be guided via the upper guide arm 21 to the upper end of the cutting wire 30 (see Fig. 7 ).

The attachment of each leaf spring 31 on the guide arm or profile 21 and 22 of the cutting bracket 19 is z. B. two knurled screws 37 and 38, which engage through two formed at a rear attachment portion 39 of the leaf spring 31 slots 40 and 41 and the guide arm or profile 21 and 22 are screwed, so that the leaf spring 31 on the guide arm or profile 21 and 22 can be determined by pressing. The length of the elongated holes 40 and 41 determines the possible adjustment range for fixing and positioning the leaf spring 31 on the guide arm or profile 21 and 22. This configuration allows the cutting wire 30 both parallel to the base profile 20 of the cutting bracket 19 as well as at a respective angle from Z. B. about 1 ° to 3 ° relative to the To arrange parallels. By means of these angle settings, corresponding cuts can be made for bevelled cut surfaces on workpieces.

The cutting bracket 19 is displaceable between a retracted position and an extended position on the guide rails 23 and 25 and adjustable in intermediate positions (see eg. Fig. 1 and 3 ), wherein a Kunststoffgleitschiene 42, the sliding bearing between the guide rails 23 and 25 and the associated guide arms 21 and 22 forms and performs a sliding movement. In order to limit the insertion path of the cutting bracket 19 from its extended position, a depth stop 43 is attached to at least one pivot bar 44, which at the end of the longitudinal profile element 4 of the base frame 2 in the region of z. B. lower pivot joint 26 of the guide rail 25 is pivotally mounted and in particular in the 90 ° position of the cutting bracket 19 (see Fig. 5 and 7 ) is arranged parallel to the guide rail 25. The depth stop 43 is at the slot 45 having a pivot bar 44 by means of a screw 46, if necessary, fixed in any position.

A in cross section z. B. right-angled support rail 47 is articulated as an angle section at the bottom right corner of the base frame 2 by means of a pivot bearing 48 at its rear vertical leg 49 and extends in a position of use (see Fig. 1 ) horizontally to the left beyond the left vertical longitudinal profile element 3 of the base frame 2 addition. In the forwardly open groove 9 of the left longitudinal profile element 3, a clamping unit is slidably received and fixed by means of a clamping rotary handle 51 on the groove 9. The vertical leg 49 of the support rail 47 has at its lower edge a plurality of recesses 52 into which a screw shaft of the clamping rotary handle 51 of the clamping unit can engage in a respective pivot position of the support rail 47, which is displaced in an associated height position on the longitudinal profile element 3. By means of the clamping rotary handle 51 thus the support rail 47 can be firmly clamped against the base frame 2. The recesses 52 are, for example, mounted in such positions that the support rail 47 can be fixed from the horizontal by an angle of 15 ° in each case upwardly pivoted. It can also be provided that the support rail 47 bears in its horizontal orientation against a stop and can be clamped without an edge recess of the clamping rotary handle 51. An outer last recess is provided for transport protection of the swung-up support rail 47 (see Fig. 9 ).

The base frame 2 includes a stand device with a front stand 53 and a rear support 54. The base 53 is z. B. frame-like with two parallel spaced longitudinal profiles 55, which consist in particular of the groove profiles of the base frame 2. A support plate 56 connects the two longitudinal profiles 55 at the back (see Fig. 8 ) and is screwed in their respective groove 9 by means of screws 57. The two longitudinal profiles 55 are pivotally mounted at their upper ends in the region of the support plate 56 by means of pivot bearing 58 to two bearing blocks 59 which are secured to the backs of the longitudinal profiles 3 and 4 of the base frame 2 by screwing in the rear grooves 9. A lower strut 60 connects the two longitudinal profiles 55 adjacent to their bottom ends. The two bearing blocks 59 are secured in such a position on the longitudinal profiles 3 and 4, that the folded down into its operating position stand 53 rests in obliquely forward inclined position with its two longitudinal profiles 55 on the back of the lower angle section 16. The bottom ends of the two longitudinal profiles 55 are clearly in front of the imaginary extension of the plane formed by the base 2 level on the ground, so that the erected base frame 2 will not tilt forward in normal operation.

A transformer 61 is fixed by means of a Kabelaufwickelblechs 62 and screws 63 back to the support plate 56 ("back" relative to the unfolded operating position of the base 53). The transformer 61 can be connected via a power cable 64 and a plug 65 to a power grid. When not in use, the annular space around the transformer 61 and between the over the transformer 61 protruding Kabelaufwickelblech 62 and the support plate 56 serves as a cable winder and the plug 65 is inserted into two holes in the support plate 56. A second cable 66 connects the Transformer 61 with a fixed in the support plate 56 socket 67, via which a cable connection with the plug 35 on the cutting bracket 19 can be made.

The rear support 54 is formed at its upper end with a profile element 80 T-shaped and articulated via this profile element 80 by means of double-sided pivot joints 68 pivotally mounted on two bearing blocks 69, the z. B. in the rear groove 9 of the longitudinal profile elements 3 and 4 of the base frame 2 are fixed by screwing. In its folded-down operating position (see, for example, Fig. 1 and 8th ), the support 54 rests with its front side against the upper edge 81 of the cable winding plate 62. A sliding latch 70 is slidably mounted on the front of the support 54 in the longitudinal direction and can be pushed with its obliquely upstanding lower edge 71 behind the upper edge 81 of Kabelaufwickelblechs 62 and clamped in this locking position by means of a handwheel 72 operable clamping screw, so that the support 54 is fixed in this position.

Optionally, at least one further abutment and support device 82 can be attached to the base frame 2 (see FIG Fig. 1 to 3 ), the z. B. a frame formed as a rectangle 83 and attached to the lower edge of the frame 83 horizontal support rail 84 which is preferably an angle rail corresponding to the support rail 47. The attachment of the support and support means 82 on the base frame 2 via a frame 83 forming profile element 85 which is arranged parallel to the longitudinal profile element 4 and by means of two operated by hand wheels 86 clamping elements which engage in the groove 9, is attached. The front of the abutment surface formed by the frame 83 is disposed in the plane of the front abutment surface of the base frame 2 and the support rail 84 extends the support rail 47 of the base frame 2 to the right (in plan view of the front 10 of the base frame 2) Fig. 1 and 3 ).

According to a further embodiment, a holding device is optionally attached to the base frame 2 instead of the stand device, with which the base frame 2 on a horizontal support 73 (see Fig. 12 and 13 ), for example, a construction site scaffolding or the like can be releasably attached or mounted. The holding device includes two hooks 74, which are each pivotally mounted on the outside of the vertical longitudinal profile 3 and 4 of the base frame 2 with a pivot bearing 75 which is attached to the groove 9 or attached to a clamped in the respective groove 9 and adjustable clamping part , The two attached at the same height hooks 74 are fixedly connected to each other by means of a connecting rod 77. When not in use, the two hooks 74 hang down. For attachment to the horizontal support 73, the base frame 2 is applied to the horizontal support 73 and the two hooks 74 are pivoted from bottom to top, wherein they embrace the horizontal support 73. The base frame 2 is then lowered slightly and rests with its back against the horizontal support 73. The weight of the base frame 2 or, the entire hot wire cutting device 1 keeps the hooks 74 biased into their holding position. To remove the base frame 2 is raised, so that the hooks 74 can be pivoted away from the horizontal support 73 again. Tools are not required for attaching and removing the base frame 2 on or from the horizontal support 73.

In addition, at least one securing hook 87 may be provided, the z. B. on the longitudinal profile elements 4 of the base frame 2 on the outside by means of a pivot bearing 88 is pivotally mounted on the outer groove 9 releasably mounted by means of a handwheel 89 and can be set along the longitudinal profile element 4 in a respective position, the securing encompassing another component or support 90 of a construction site scaffolding or the like is appropriate.

The holding device with the hooks 74 is expediently used when the base frame 2 or the hot wire cutting device 1 is not used as a standing device and thus without a base 53 and support 54. In this case, a transformer is suitably used as a unit with a foot switch, and a power supply line from this transformer is plugged into a plug 79 (see e.g. Fig. 1 and 6 ) plugged in.

especially the Fig. 9 and 10 show the compact closing or transport position of the hot wire cutting device 1 with folded two-piece stand device.

The individual features of the invention disclosed in the description and on the basis of the exemplary embodiment and in the figures can be combined with the subject matter of the invention in its general form in any technically expedient arrangements and configurations.

LIST OF REFERENCE NUMBERS

1 Hot wire cutter 31 leaf spring 2 base frame 32 screw 3 Longitudinal profile element 33 fastening hooks 4 Longitudinal profile element 34 eyelet 5 Cross-sectional element 35 plug 6 Cross-sectional element 36 pressure switch 7 profile element 37 thumbscrew 8th profile element 38 thumbscrew 9 groove 39 attachment section 10 front 40 Long hole 11 angle section 41 Long hole 12 first leg 42 Kunststoffgleitschiene 13 Outside or back 43 depth stop 14 screw 44 swivel bar 15 second leg 45 Long hole 16 angle section 46 screw 17 first leg 47 support rail 18 second leg 48 pivot bearing 19 cutting bow 49 leg 20 basic profile 21 guide profile 51 Clamping turning handle 22 guide profile 52 recess 23 upper guide rail 53 stand 24 pivot 54 support 25 lower guide rail 55 longitudinal profile 26 pivot 56 support plate 27 clamping lever 57 screw 28 threaded bolt 58 pivot bearing 29 recess 59 bearing block 30 cutting wire 60 strut 61 transformer 77 connecting rod 62 Kabelaufwickelblech 78 power supply 63 screw 79 plug 64 power cable 80 profile element 65 plug 81 upper edge 66 electric wire 82 Plant and support device 67 Rifle 68 pivot 83 frame 69 bearing block 84 support rail 70 slide bolt 85 profile element 71 lower margin 86 handwheel 72 handwheel 87 safety hook 73 Horizontal support 88 pivot bearing 74 hook 89 handwheel 75 pivot bearing 90 carrier

Claims (18)

Hot wire cutting device for the thermal separation of workpieces, in particular of plastic foam or fiber material,
characterized,
that a base frame (2) of the hot wire cutting device (1) as a particular rectangular frame structure of interconnected groove profiles (3, 4, 5, 6) is formed. Hot wire cutting device according to claim 1,
characterized in that an upper angle section (11) at the upper edge and a lower angle section (16) at the lower edge of the base frame (2) is mounted. Hot wire cutting device according to claim 1 or 2,
characterized in that an upper guide rail (23) on the upper edge of the base frame or at the upper angle section (11) and a lower guide rail (25) at the lower edge of the base frame (2) or at the lower angle section (16) are pivotally mounted,
a U-shaped cutting bracket (19) has two guide arms (21, 22) which are displaceably mounted on the two guide rails (23 or 25),
in that the cutting bracket (19) is adjustable between a closed position pivoted to the base frame (2) and a pivoted-out use position by means of the two guide rails (23, 25), and in that the cutting bracket (19) has a cutting wire (30) between the guide arms (21, 22) is stretched and can be heated via a power supply line (78). Hot wire cutting device according to claim 3,
characterized in that the two guide rails (23, 25) the two guide arms (21 and 22) of the cutting bracket (19) by means of plastic slide rails (42) or ball bearings slidably support. Hot wire cutting device according to one of claims 1 to 4,
characterized in that on the base frame (2) a stand device (53, 54) is mounted in particular hinged. Hot wire cutting device according to one of claims 1 to 5,
characterized in that the base frame (2) in closed or transport position of the hot wire cutting device (1) with pivoted or applied components (19, 47, 53, 54) forms a transport protection frame. Hot wire cutting device according to one of claims 3 to 6,
characterized in that the cutting wire (30) at least on one side by means of a holder or leaf spring (31) on the guide profile or guide arm (21, 22) in particular in the longitudinal direction of the guide arm (21, 22) is mounted conceivable. Hot wire cutting device according to one of claims 1 to 7,
characterized in that the power line (78) takes place directly on the cutting wire (30) or its holder (31). Hot wire cutting device according to one of claims 3 to 8,
characterized in that the cutting bracket (19) in its respective pivot position by means of a common locking, in particular only one screw, can be fixed, which engages on both guide rails (21, 22). Hot wire cutting device according to one of claims 3 to 9,
characterized in that on each guide arm or guide profile a linear guide is slidably mounted on which the cutting wire (30) is mounted, and that the two linear guides are synchronously adjustable via a drive. Hot wire cutting device according to one of claims 1 to 10,
characterized in that a transformer (61) of the power supply to the base frame (2) or an additional component (53) is in particular pivotally mounted and in particular has a cable winder and a plug attachment. Hot wire cutting device according to one of claims 1 to 10,
characterized in that a foot switch for actuating the power supply and a transformer are formed as a structural unit. Hot wire cutting device according to one of claims 1 to 12,
characterized in that at least one attachment, such as additional supports (82), vertical cutter or stop angle, on the groove profiles (3 to 8) can be fixed. Hot wire cutting device according to one of claims 1 to 13,
characterized in that the base frame (2) has an adjustable and adjustable in particular between a use position and a non-use position stop (43) for limiting the adjustment path of the cutting bracket (19). Hot wire cutting device according to one of claims 1 to 14,
characterized in that the base frame (2) has a holding device, in particular a folding hook device (74), for attachment to a frame or frame part (73). Hot wire cutting device according to claim 15,
characterized in that the holding device or folding hook device (74) is attached to a groove (9) at least one groove profile in particular continuously adjustable. Hot wire cutting device according to one of claims 1 to 16,
characterized in that on the base frame (2) has a support rail (47) is pivotally mounted, the markings or recesses (52) for fixing the support rail (47) in associated defined pivot positions. Hot wire cutting device according to one of claims 1 to 17,
characterized in that a support foot (54) on the base frame (2) is pivotally mounted and by means of a latch member (70, 71) on the base frame (2) or an additional component in the operating position can be locked.

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