EP3848170B1 - Cutting device and method to assemble a cutting device - Google Patents

Description

The invention relates to a cutting device, according to the preamble of claim 1. Such a cutting device is from document EP3623125 A1 known.

With such combinations, it was previously not possible to secure the area for receiving the items to be cut. However, due to new safety regulations, it is also necessary that the area for receiving the items to be sliced is covered when the seesaw support is pivoted, in order to avoid injuries.

A permanently mounted safety cover would meet safety regulations, but conversion between a jigsaw and a table saw would not be possible.

A pure tilting saw with a safety cover is out, for example EP 3 623 125 A1 and AT 505 378 A1 known.

It is therefore an object of the invention to create a cutting device and a method which enable a high level of safety and simple conversion.

This task is solved by the cutting device and the method of the independent claims.

The cutting device is designed in particular as a wood cutting device. The material to be cut can preferably be wood, for example split firewood, trunks and/or branches.

The cutting device includes a circular saw blade. The circular saw blade preferably has a circular basic structure with teeth arranged on the outer circumference.

A protective hood is provided for the circular saw blade. This protects the circular saw blade, preventing injuries.

The cutting device comprises a rocking support which is pivotably mounted and partially delimits a cutting material receiving area, for use of the cutting device as a rocking saw. In particular, the rocker support can be pivoted relative to a frame of the cutting device.

The see-saw support can, for example, be angled, for example as a V-shaped plate. The see-saw support can also be designed in the form of a channel. The rocker support preferably has a slot for the circular saw blade.

The material to be cut can be placed in the area for receiving the material to be cut and rests in particular on the underside and on the side of the seesaw support.

The cutting device has a table support that can be adjusted, in particular pivoted, between a waiting position and a functional position, for using the cutting device as a table saw. In particular, the table support can be adjusted relative to a frame of the cutting device.

The cutting device is therefore a combination of a tilting saw and a table saw. The cutting device thus fulfills a dual function and can be easily converted depending on the application.

When the table support is in the waiting position, the table support is folded up and therefore does not impede operation as a tilting saw. In the functional position, on the other hand, the table support is adjusted to the horizontal. The cutting device can be used as a table saw, in particular a circular table saw or a timber saw.

In the functional position of the table support, the protective hood can preferably be adjusted downwards, in particular swiveled in, and release the circular saw blade. The protective cover thus does not hinder the adjustment of the table support.

To operate the table saw, a table saw protective hood can be provided, which can be placed on the circular saw blade. In this way, injuries can be avoided when operating the table saw.

The cutting device has a safety cover for at least temporarily covering the area for receiving the items to be cut. For example, the safety cover can be designed as a cover.

The safety cover can be, for example, between 30 cm and 70 cm, in particular between 40 cm and 60 cm, preferably between 50 cm and 55 cm, eg 52 cm long. The width can be, for example, between 30 cm and 70 cm, in particular between 40 cm and 60 cm, preferably between 50 cm and 55 cm, for example 53 cm. The width is preferably at least 48 cm. In particular, the safety guard may extend at least 23 cm to the right and at least 25 cm to the left with respect to the circular saw blade.

Preferably, an upper area of the cutting material receiving area is covered. In particular, the material to be cut is surrounded on all sides by the rocking support and the safety cover.

Access to the circular saw blade is prevented during the cutting operation.

The safety cover is adjustable between an operational position and a standby position.

In the functional position, the safety cover can be opened in particular in order to load the seesaw support with items to be cut. This can also be referred to as the loading position. For example, the safety cover can preferably be pivoted upwards in the direction of the circular saw blade. Furthermore, in the functional position, the safety cover can preferably be pivoted away from the circular saw blade in the direction of the rocker support in order to cover the area for receiving the material to be cut. This can also be referred to as a covering position.

In the waiting position, the safety cover is mounted on a swivel bearing on an area of the rocker support facing away from the circular saw blade and releases the area for receiving the material to be cut.

In particular, the safety cover is moved from the functional position to the standby position and secured against self-opening. The safety cover is preferably spring-loaded so that it is normally open. A spring force must therefore be overcome to close it.

For example, the safety cover is fastened to a joint device of the see-saw support by means of at least one locking pin. The socket pin can be secured, for example, by means of a cotter pin, a quick-release fastener and/or a screw.

In the waiting position, the safety cover is preferably arranged away from the circular saw blade and/or from the rocker support or the area for receiving the material to be cut.

Preferably, the safety cover is in a front area where a user stands.

The safety cover can preferably be pivoted at least 90°, 100°, 120°, 150°, 180°, 200°, 220°, 250°, 270° or more. In particular, the safety cover can be pivoted relative to the seesaw support.

In particular, the safety cover is pivoted almost completely between the operational position and the standby position. The underside of the safety cover facing the seesaw support in the covering position is preferably directed outwards in the waiting position. In the waiting position, the safety cover preferably hangs down and/or is arranged outside the area for receiving the items to be cut.

In particular, the safety cover is arranged in the waiting position on an opposite side of the circular saw blade with respect to the seesaw support.

The safety cover therefore does not impede the conversion from a jigsaw to a table saw.

The cutting device according to the invention enables simple conversion and also ensures a high level of safety during operation.

Further developments of the invention can also be found in the dependent claims, the description and the accompanying drawings.

According to one embodiment, the safety cover is folded down in the waiting position. The safety cover is preferably arranged laterally next to the seesaw support with respect to the longitudinal extension of the seesaw support. In particular, the safety cover partially extends further down than the seesaw support.

According to a further embodiment, the safety cover is detached from the protective hood in the waiting position. For example, a connecting pin can be loosened, preferably with a quick-release fastener or a screw. The safety cover is thus free and can be folded forward.

According to a further embodiment, the safety cover is fastened to the protective hood in the functional position, in particular rotatably mounted. The safety cover may be connected to the protective hood, for example by means of a connecting pin, e.g. The connecting pin can be secured with a quick-release fastener or a screw and nut, for example. In particular, a tool is required for loosening, since it is a safety-relevant component.

The connecting pin can preferably be connected to a rope, a wire and/or a cord so that it does not get lost when it is released.

If the rocker support is swiveled in the direction of the circular saw blade with the safety cover closed, the protective hood is automatically pushed back and opens in order to be able to cut the material to be cut. The safety cover and the protective hood are in particular forcibly coupled. The protective hood opens when the seesaw support is pivoted. The security cover is to a certain extent pushed over the circular saw blade. The movement is made possible in particular by a rotatable bearing.

According to a further embodiment, the safety cover can be adjusted in the functional position between an open loading position and a closed covering position. In the open loading position, the material to be cut can be introduced into the material-to-be-cut receiving area from the side and/or from above. The cutting device can thus also be loaded easily with large and/or unwieldy items to be cut, without the safety cover impeding loading.

For cutting, on the other hand, the safety cover is closed. In this covering position, the area for receiving the items to be cut is covered from above so that cutting can take place without danger.

Alternatively it is possible that the safety cover is permanently closed in the functional position. In this case, the material to be cut must be introduced from the side. However, this variant is cheaper to produce. Wear and maintenance are also lower. Furthermore, this variant is particularly suitable for users who cut a lot.

According to a further embodiment, the safety cover has a handle for pivoting the seesaw support. In the functional position, the safety cover can be adjusted between the loading position and the covering position, in particular by means of the handle.

If the safety cover is closed, the seesaw support can be pivoted on the handle in the direction of the circular saw blade.

The handle is preferably designed to be adjustable in height. In particular, three different heights can be set. To adjust to the standby position, the handle is preferably set to the lowest position.

In the standby position of the safety cover, the handle is preferably arranged between the safety cover and the seesaw support.

According to a further embodiment, the safety cover is arranged on a bracket which is attached to the seesaw support. For example, the bracket can be designed as a bent metal tube.

The bracket connects the safety cover to the rocker pad. In particular, the bracket is connected to the seesaw support both in the covering position and in the loading position. When moving from the functional position to the waiting position, the bracket remains in particular on the safety cover.

Alternatively, the bracket is attached to a frame or shaft for the circular saw blade. This has the advantage that the bracket is not in the way even in the loading position and therefore does not impede loading. To adjust the safety cover from the functional position to the standby position, the bracket is separated, for example unplugged, from the safety cover and/or the frame or the shaft.

According to a further embodiment, a release device is provided which is designed to prevent the seesaw support from pivoting when the safety cover is in the loading position. The rocker support can thus only be pivoted in the direction of the circular saw blade when the safety cover is closed. A safe cutting operation is guaranteed in this way.

If the safety cover is in the covering position, it is released, preferably automatically. The rocker support can now be moved in the direction of the circular saw blade.

According to a further embodiment, the release device has a mandrel which is connected to the safety cover, in particular in an articulated manner, or forms part of the safety cover. The mandrel can in particular be rod-shaped. Preferably the mandrel forms a control rod.

The release device can preferably have a recess on a frame of the cutting device. Furthermore, the frame can have a guide or a blocking element, which in particular adjoins the recess.

In the loading position, the mandrel is preferably in engagement with the recess in the frame. As a result, the seesaw support is locked to a certain extent and cannot be moved in the direction of the circular saw blade.

When the safety cover is closed, the pin is lifted out of the recess and the seesaw support can be pivoted. The mandrel can now be located in particular in a guide. The safety cover can only be opened in the loading position.

As an alternative to a guide, a locking element can be provided which pushes the mandrel upwards as long as the safety cover is closed.

The mandrel can preferably fulfill a dual function. In the waiting position, for example, it can be used to attach the safety cover to the frame or the seesaw support. For example, the mandrel can be screwed to the frame or the seesaw support. The security cover may change thereby, for example when transporting the cutting device, not pivot unintentionally.

The invention also relates to a method for converting a cutting device, in particular according to the invention, from a tilting saw into a table saw, in which a safety cover for using the cutting device as a tilting saw is folded down outside of a cutting material receiving area. A table support is then adjusted.

Preferably, the safety cover is first closed and rotatably fastened to the see-saw support by means of a locking pin. To prevent accidental opening, the socket pin can be secured using a cotter pin, a quick-release fastener and/or a screw. The safety cover can now be detached from the protective hood, for example by removing a locking pin. The safety cover can then be folded forward.

To convert the table saw into a tilting saw, the procedure is reversed.

All of the embodiments and components of the device described here are designed in particular to be converted using the method described here. Furthermore, all of the embodiments of the device described here and all of the embodiments of the method described here can be combined with one another, in particular also detached from the specific configuration in the context of which they are mentioned.

Fig. 1

eine Perspektivansicht einer ersten Ausführungsform einer erfindungsgemäßen Schneidvorrichtung in einer Beladestellung,

Fig. 2

eine Perspektivansicht der Schneidvorrichtung gemäß Fig. 1 in einer Abdeckstellung,

Fig. 3

eine Perspektivansicht der Schneidvorrichtung gemäß Fig. 1 in einer Wartestellung einer Sicherheitsabdeckung und einer Funktionsposition einer Tischauflage,

Fig. 4

eine Perspektivansicht einer zweiten Ausführungsform einer erfindungsgemäßen Schneidvorrichtung in einer Beladestellung,

Fig. 5

eine Perspektivansicht einer dritten Ausführungsform einer erfindungsgemäßen Schneidvorrichtung in einer Beladestellung,

Fig. 6

eine Teilperspektivansicht einer Ausführungsform einer Freigabevorrichtung in einer Beladestellung, und

Fig. 7

eine Teilperspektivansicht der Freigabevorrichtung gemäß Fig. 6 in einer Abdeckstellung.

The invention is described below by way of example with reference to the drawings. Show it:

1

a perspective view of a first embodiment of a cutting device according to the invention in a loading position,

2

a perspective view of the cutting device according to FIG 1 in a covering position,

3

a perspective view of the cutting device according to FIG 1 in a standby position of a safety cover and an operational position of a table top,

4

a perspective view of a second embodiment of a cutting device according to the invention in a loading position,

figure 5

a perspective view of a third embodiment of a cutting device according to the invention in a loading position,

6

a partial perspective view of an embodiment of a release device in a loading position, and

7

a partial perspective view of the release device according to FIG 6 in a covering position.

First, it should be noted that the illustrated embodiments are purely exemplary in nature. Individual features can be implemented not only in the combination shown, but also individually or in other technically sensible combinations. For example, the features of one embodiment can be arbitrarily combined with features of another embodiment.

If a figure contains a reference number that is not explained in the directly associated descriptive text, reference is made to the corresponding preceding or following statements in the description of the figures. The same reference numbers are used for the same or comparable components in the figures and these are not explained again.

1 shows a cutting device with a circular saw blade 10, which is surrounded by a protective hood 12 with a plurality of fastening webs 13.

A rocking support 14 is pivotably mounted and delimits part of a cutting material receiving area 16.

The item to be cut can be placed in the item receiving area 16 . The rocker support 14 can then be adjusted in the direction of the circular saw blade 10 and the material to be cut can be severed.

The cutting device is used here as a tilting saw.

The cutting device can also be used as a table saw. For this purpose, a table support 18 is provided, which is placed between an in 1 shown waiting position and an in 3 shown functional position is adjustable.

A safety cover 20 with a handle 22 is provided for at least temporarily covering the area 16 for receiving the material to be cut.

In 1 the safety cover 20 is in an operative position in which the safety cover 20 is between an in 1 shown, open loading position and in 2 shown covering position can be adjusted.

The safety cover 20 is attached to the protective hood 12 via a hinge 24 . If the rocker support 14 is pivoted in the direction of the circular saw blade 10, the protective hood 12 is thereby pushed backwards and the circular saw blade 10 is released.

The safety cover 20 is arranged on a bracket 26 which is fastened to an upper region of the rocker support 14, in particular by means of a pivot bearing 28.

The bracket 26 connects the safety cover 20 to the seesaw support 14.

A release device 30 is provided, which is designed to allow pivoting of the rocker support 14 only when the safety cover 20 is closed.

The release device 30 has a mandrel 32 which is connected to the safety cover 20, in particular rigidly or in an articulated manner.

Furthermore, the release device 30 comprises a recess 34 on a frame 36 of the cutting device. Also provided on the frame 36 is a guide 38 such as a groove.

In 2 the safety cover 20 is closed and is thus in the covering position.

The mandrel 32 is lifted out of the recess 34 by itself, so that the see-saw support 14 can now be pivoted. The mandrel 32 can be located in the guide 38 . If the safety cover 20 is opened again in the loading position, the mandrel 32 automatically returns to the recess 34 via the guide 38.

In 3 the safety cover 20 is pivoted to the standby position and the table top 18 is in the operational position.

The mandrel 32 can be used to attach the safety cover 20 to the frame 36 or the see-saw support 16 .

When converting the cutting device from the jigsaw to the table saw, the safety cover 20 is detached from the protective hood 12. The protective hood 12 can be swung away downwards.

The safety cover 20 is pivoted forward via the pivot bearing 28 outside of the cutting material receiving area 16 and folded down.

The bracket 26 preferably remains connected to the seesaw support 14 and the safety cover 20 .

The table support 18 is adjusted to a horizontal position. Finally, a table saw guard 40 can be placed over the circular saw blade 10 .

At the in 4 In the illustrated embodiment, the bracket 26 is fastened to the frame 36 in the region of a shaft of the circular saw blade 10 .

As a result, the bracket 26 does not impede access to the cutting material receiving area 16.

When the safety cover 20 is moved to the standby position, the bracket 26 must be detached from the frame 36.

A connecting element 42, for example an elongate sheet metal and/or flat steel, can be provided as a positive coupling between the seesaw support 14 and the protective hood 12. The connecting element 42 is preferably connected to the protective hood 12 at a fastening web 13 . In particular, the connecting element 42 can be between 10 cm and 20 cm, for example 15 cm, long. The connecting element is preferably articulated on the seesaw support 14 and/or the protective hood 12 .

If the rocker support 14 is pivoted, the protective hood 12 opens due to the connecting element 42.

In the embodiment shown in figure 5 As shown, the safety cover 20 is permanently closed in the operative position and cannot be moved to a loading position.

A release device 30 is therefore not required.

However, an adjustment between the functional position and the waiting position is possible.

In 6 an alternative release device 30 is shown. The mandrel 32 can be guided through a fastening device 44 shown semi-transparently. The mandrel 32 is preferably moveable relative to the fixture 44 . The fastening device 44 can, for example, be cylindrical and has a, for example central, passage for the mandrel 32 .

The fastening device 44 is firmly connected to the protective hood 12, in particular to a fastening web 13 of the protective hood 12.

In the loading position, the mandrel 32 engages in the recess 34 and thus prevents the rocker support 14 from pivoting.

Outside the recess 34, the mandrel 32 makes contact, as in 7 shown, a blocking element 46. This can in particular be crescent-shaped and / or crescent-shaped.

When the rocker support 14 is adjusted, the mandrel 32 slides, as it were, along the blocking element 46. The blocking element 46 allows the safety cover 20 to be opened only in the loading position.

Reference List

10

circular saw blade

12

protective hood

13

mounting bar

14

rocker pad

16

cutting material pick-up area

18

table pad

20

security cover

22

grab handle

24

joint

26

hanger

28

swivel bearing

30

release device

32

mandrel

34

recess

36

frame

38

guide

40

table saw guard

42

fastener

44

fastening device

46

blocking element

Claims (10)

1. Cutting device, especially a wood-cutting device, comprising a circular saw blade (10),

   a protective hood (12) for the circular saw blade (10), characterised in that the cutting device comprises

   a rocker support (14), which is pivotably mounted and partially delimits a cutting material receiving area (16), for the purpose of using the cutting device as a rocker saw,

   a table support (18), which is adjustable between a waiting position and a functional position, for the purpose of using the cutting device as a table saw, and

   a safety cover (20) for the purpose of at least temporarily covering the cutting material receiving area (16), wherein

   the safety cover (20) is adjustable between a functional position and a waiting position, wherein

   in the waiting position, the safety cover (20) is mounted to a pivot bearing (28) on a portion of the rocker support (14) facing away from the circular saw blade (10) and exposes the cutting material receiving area (16).
2. Cutting device according to claim 1,
   characterised in that
   in the waiting position, the safety cover (20) is folded down.
3. Cutting device according to claims 1 or 2,
   characterised in that
   in the waiting position, the safety cover (20) is detached from the protective hood (12).
4. Cutting device according to any of the preceding claims,
   characterised in that
   in the functional position, the safety cover (20) is fastened, especially rotatably mounted, to the protective hood (12).
5. Cutting device according to any of the preceding claims,
   characterised in that
   in the functional position, the safety cover (20) is adjustable between an open loading position and a closed covering position.
6. Cutting device according to any of the preceding claims,
   characterised in that
   the safety cover (20) comprises a handle (22) for pivoting the rocker support (14).
7. Cutting device according to any of the preceding claims,
   characterised in that
   the safety cover (20) is disposed on a bracket (26) which is fastened to the rocker support (14), to a frame (36) or to a shaft for the circular saw blade (10).
8. Cutting device according to any of the preceding claims,
   characterised in that
   a release device (30) is provided, which is configured to prevent the rocker support (14) from pivoting when the safety cover (20) is in a loading position.
9. Cutting device according to claim 8,
   characterised in that
   the release device (30) comprises a mandrel (32), which is connected to or forms part of the safety cover (20).
10. A method of converting a cutting device, according to any of the preceding claims, from a rocker saw into a table saw, wherein a safety cover (20) is folded down outside a cutting material receiving area (16) for the purpose of using the cutting device as a rocker saw and a table support (18) is adjusted.

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