• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a sawing device for cutting wood comprising at least one saw blade (3) and a workpiece holder (1) with a cutting space (13) for inserting sawing material, - wherein the workpiece holder (1) between one of the cutting edge of the saw blade (3) distant Rest position and one of the cutting edge of the saw blade (3) near sawing position movably arranged, in particular pivotable or displaceable, - wherein on the workpiece holder (1) a protective covering (2) for at least partially covering the cutting space (13) is arranged, wherein both in the rest position and in the sawing position, the access to the cutting space (13) from the protective covering (2) is at least partially permanently covered.
    公开号:AT521147A4
    申请号:T505362018
    申请日:2018-06-29
    公开日:2019-11-15
    发明作者:
    申请人:Posch Gmbh；
    IPC主号:
    专利说明:

    Summary
    The invention relates to a sawing device for cutting wood, comprising at least one saw blade (3) and a workpiece holder (1) with a cutting space (13) for inserting sawdust,
    the workpiece holder (1) is movably arranged, in particular pivotable or displaceable, between a rest position remote from the cutting edge of the saw blade (3) and a sawing position close to the cutting edge of the saw blade (3),
    - A protective covering (2) for at least partially covering the cutting space (13) is arranged on the workpiece holder (1), with access to the cutting space (13) from the protective covering (2) at least partially both in the rest position and in the sawing position is permanently covered.
    Fig. 1
    1.31
    The invention relates to a sawing device for cutting wood according to the preamble of patent claim 1.
    Operating sawing devices, for example for cutting firewood, carries risks for the user of the sawing device, since the saw blade poses a considerable risk of injury, in particular the risk of serious hand injuries, such as amputations of individual fingers or parts of the arm. Accidents with such devices are due to errors in maintenance as well as improper use. For this reason, sawing devices of this type, such as circular saws, have already been the subject of standardization processes with the aim of reducing the process potential emanating from these machines. Current requirements for sawing devices are defined in accordance with E standard EN 1870-6: 2017.
    Sawing devices are known from the prior art which are equipped with safety devices in accordance with this ENorm in order to exclude the risk of, for example, a hand injury from the saw blade or the material to be cut in the cutting area. Such a sawing device is disclosed, for example, in EP 1 992 461 B1, in which a safety flap is arranged on the saw, which covers the cutting area when the saw blade penetrates into the cutting area. The user is thus protected from injuries to the upper extremities and manual access to the safety-relevant area of the saw is made impossible or can only take place if the saw is used improperly.
    A disadvantage of the sawing device known from the prior art is that the safety flap has to be closed manually in order to bring the sawing device into a sawing position in which it is possible to saw the wood. In practice, this version means an increased effort for operation and concentration for the operator, since the safety flap must be operated or closed continuously.
    The object of the invention is therefore to provide a sawing device that meets the current safety requirements for sawing devices and at the same time enables the operating process without additional effort, such as closing a safety hatch.
    The invention achieves this object in a sawing device for cutting wood comprising at least one saw blade and a workpiece holder with a / 31
    Cutting space for inserting sawdust, which is movably arranged, in particular pivotable or displaceable, between a rest position remote from the cutting edge of the saw blade and one of the cutting edge of the nearby sawing position, and on which a protective covering for at least partially covering the cutting space is arranged, with the characteristic features of According to the invention, it is provided that the access to the cutting space is at least partially permanently covered by the protective cladding both in the rest position and in the sawing position.
    In the rest position as well as in the sawing position, the protective cover at least partially permanently covers access to the cutting area from above, or along its longitudinal extent, so that accidental intervention in the saw blade or risk of injury from the sawing material in the cutting area is excluded. A problem-free loading of the workpiece holder with material to be cut is possible to the side or along the end faces of the cutting space.
    With this embodiment of a sawing device according to the invention, on the one hand, the protective cladding fulfills the safety criteria specified in the standard EN 1870-6: 2018, while at the same time the operating process when cutting sawdust is particularly simple for the user and does not involve additional operating effort, such as closing one Safety flap is connected. The protective covering effectively protects the user of a sawing device according to the invention or his fingers and hands from unintentional injury from the saw blade or from the material to be cut in the cutting room.
    In order to ensure that a user of the sawing device cannot inadvertently bring it into the sawing position, for example while loading the workpiece holder with sawing material, it can be provided that the protective cladding can be reversibly transferred from an initial position to a position with less coverage of the cutting space compared to the initial position , wherein the workpiece holder can only be brought into the sawing position in the starting position of the protective cover.
    A particularly simple construction of the protective covering can be ensured in a sawing device according to the invention if the protective covering is made in one piece and is movable, in particular displaceable.
    / 31
    In order to provide a particularly easy-to-use protective cladding that can be pressed aside with the arm or hand, for example while the workpiece holder is being fitted with wood, it can be provided that the protective cladding is made in two or more parts, at least one on the discharge side or part of the protective covering arranged on a removal side for the removal of the cut sawing material is fixed or movable and at least one further part of the protective covering arranged on the supply side or on a supply side opposite the removal side for the supply of the sawing material to be cut is movably arranged on the workpiece holder,
    A structurally simple construction of such a protective covering can be provided if the protective covering is made in two parts, a first part of the protective covering arranged on the discharge side and a second part of the protective covering arranged on the supply side being displaceably arranged on the workpiece holder, the second part being above or below the first part is movable.
    For example, the workpiece holder can have a feed side for the feed of the sawing material to be cut and a removal side opposite the feed side for the removal of the sawn material to be cut, and the protective cladding can be made, for example, in two parts, with a first, non-displaceable part of the protective cladding on the workpiece holder starting from the saw blade is arranged in the direction of the removal side and a second part of the protective covering can be displaced from a starting position arranged from the saw blade in the direction of the feed side into a feed position in which the second part of the protective covering is arranged above or below the first part.
    In order to be able to reliably secure the sawn material in the workpiece holder, so that rotation of the sawn material during cutting is avoided, it can be provided that the workpiece holder comprises a support part on the user side and a support part on the saw side, wherein in particular it is provided that the user side support part and the saw side Support part of the workpiece holder are arranged at an angle of 70 to 90 ° to each other.
    The design of the workpiece holder with two support surfaces for the sawing material, which are arranged at an angle to one another, effectively prevents movement of the cutting material / 31 during sawing, so that the user is not exposed to any danger from rotating sawing material.
    It can be particularly advantageous with such a protective cover if the protective cover is guided at least partially displaceably along a guide rail, in particular on the user-side support part of the workpiece holder, along the longitudinal extent of the cutting space. In this case, it is ensured that the user of the sawing device can carry out the protective cover effortlessly can move or move along the guide rail, for example, if Would like to bring sawed material into the cutting area.
    Direct access to the saw blade, both during cutting and in the rest position, can be prevented if a saw blade cover covering the saw blade is provided.
    In order to rule out any danger to the user of the sawing device from the saw blade rotating during operation, it can be provided that the workpiece holder can only be brought into the sawing position in the starting position of a movable, in particular the second, part of the protective cladding, in particular providing that when moving or moving the movable part, in particular the second part, of the protective cover from the starting position, a mechanical and / or electrical lock, in particular between the protective cover and the saw blade cover, is formed so that the workpiece holder cannot be brought into the sawing position. The locking prevents the user from bringing the workpiece holder into the sawing position if the protective cover is not in the starting position or if the user is loading the workpiece holder with sawing material and his arms or hands are in the cutting area.
    A particularly simple operation of the protective covering can be made possible if a resetting means, in particular a spring, is provided for an independent return of the protective covering, in particular the second part of the protective covering, to the starting position. In this embodiment of the protective cladding, the user advantageously does not need to return it manually to the starting position in order to be able to bring the workpiece holder into the sawing position.
    / 31
    A particularly long-lasting, robust design of the protective covering can be ensured if the protective covering is transparent and / or consists of impact and / or impact-resistant, in particular heat-resistant, material.
    A particularly safe configuration of the sawing device, in which access to the saw blade is made more difficult, can be provided if the distance between the saw blade and the end of the second part of the protective cover that is remote from the saw blade is 250 mm or larger in the starting position and / or The distance between the saw blade and the end of the first part of the protective cover that is distant from the saw blade is 230 mm or greater in the starting position. Such an embodiment of the sawing device advantageously ensures compliance with the safety distances specified in the guidelines.
    A particularly safe transfer of the workpiece holder into the sawing position, which is accompanied by simple operation and the greatest possible protection of the user, can be ensured if a cut opening is arranged on the workpiece holder, in particular on the saw-side support part of the workpiece holder, in the cutting plane of the saw blade, with this Saw blade can be inserted into the cutting space through the cut opening in the sawing position.
    A particularly effective protection of the user against injuries from the saw blade can be ensured if a saw blade cladding with a passage gap is arranged on the workpiece holder, in particular on the saw-side support part of the workpiece holder. A particularly good protective effect is achieved if the saw blade cladding is aligned normal to the cutting plane of the saw blade and the saw blade is covered in the rest position by the saw blade cladding in the direction of the cutting space and can be introduced into the cutting space through the passage gap in the sawing position. With such a configuration of the protective covering, it is ensured that the user cannot inadvertently intervene in the saw blade even when the workpiece holder is in the rest position, for example if he brings sawed material into the cutting space and thereby moves his hands into the cutting space.
    In order to ensure effortless sawing of the material to be cut, while at the same time avoiding any undesirable wear of the saw blade, it can be provided that the workpiece holder can be brought from the rest position into the sawing position with a linear movement, the direction of movement of the workpiece holder parallel to the cutting plane of the saw blade or that the workpiece holder with a / 31
    Pivotal movement can be brought from the rest position into the sawing position, the pivot axis of the workpiece holder being oriented normal to the cutting plane of the saw blade. Particular ease of use is achieved if a further reset means, in particular a further spring, is provided for an independent return of the workpiece holder to the rest position. A sawing device according to the invention can thus advantageously be equipped, for example, with a pivotable rocker or a linearly displaceable roller table as the workpiece holder. The arrangement of a restoring means advantageously ensures that the user of the sawing device does not have to manually transfer the workpiece holder from the sawing position into the rest position.
    To ensure that there is a sufficient, guideline-compliant distance between the sawdust and the saw blade even in the rest position of the workpiece holder, it can be provided that in the rest position of the workpiece holder the distance between the sawdust in the cutting space and the saw blade is 50 mm or greater.
    A particularly variable use of a sawing device according to the invention can be ensured by providing an electric motor with a direct drive or an electric motor with a V-belt drive or an internal combustion engine with a V-belt or a pto shaft gear with a V-belt as the saw blade drive of the saw blade, with a gear possibly being provided between the saw blade drive and the saw blade ,
    In order to enable an effective cutting of various types of wood or saw material geometries, it can be provided that at least one circular saw blade or jigsaw blade or band saw blade is provided as the saw blade.
    To further simplify the operation of a sawing device, it can be provided that a device for removing cut sawdust, in particular a conveyor belt, is arranged on the removal side of the workpiece holder.
    Further advantages and refinements of the invention result from the description and the accompanying drawings.
    / 31
    Particularly advantageous, but not restrictive, exemplary embodiments of the invention are shown schematically below with reference to the accompanying drawings and described by way of example with reference to the drawings.
    Show below:
    1 is a first oblique view of an embodiment of the invention in the rest position with the protective cover in the starting position,
    2 shows the oblique view from FIG. 1 with the protective covering in the feed position,
    3 shows a second oblique view of the first exemplary embodiment of the invention with the protective covering in the starting position,
    4 shows the second oblique view with the protective covering in the feed position,
    5 shows a third oblique view of the first exemplary embodiment with the workpiece holder in the sawing position,
    6a is a side view of the first embodiment with the workpiece holder in the rest position,
    Fig. 6b is a detailed view of the protective cover in the rest position, and
    Fig. 7 is a front view of the first embodiment with the workpiece holder in the sawing position and the protective cover in the starting position.
    Figures 1 to 7 show a first embodiment of a sawing device according to the invention for cutting wood. The sawing device is a rocking saw. The sawing device comprises a fixedly arranged on the sawing device, i.e. not displaceable or tiltable, saw blade 3 and a workpiece holder 1 with a cutting space 13 for inserting sawdust. The workpiece holder 1 is movably arranged or pivotable between a rest position remote from the saw blade 3 or the cutting edge of the saw blade 3 and a saw position close to the saw blade 3. In the exemplary embodiment shown, the longitudinal axis of the workpiece holder 1 is oriented normal to the cutting plane of the saw blade 3 in the rest position and in the sawing position.
    To protect the user of the sawing device from injury by the saw blade 3, a protective covering 2 is arranged on the sawing device 3 on the workpiece holder 1, which serves to at least partially cover the cutting space 13. The protective cladding 2 at least partially permanently covers the access to the cutting space 13 along its longitudinal extent by the protective cladding 2, both in the rest position and in the sawing position.
    / 31
    In the exemplary embodiment shown, the protective covering 2 is made in two parts and has a first non-displaceable part 21 and a second displaceable part 22. In the exemplary embodiment shown, the workpiece holder 1 has a feed side 14 for the feed of the sawing material to be cut and a removal side 15 for the removal of the cut sawing material, which is opposite the feed side 14.
    The first, non-displaceable, part 21 of the protective covering 2 is arranged on the workpiece holder 1 starting from the saw blade 3 in the direction of the removal side 15. The second displaceable part 22 of the protective covering can be displaced from an initial position (see FIG. 1), starting from the saw blade 3 in the direction of the feed side 14, into a feed position (see FIG. 2), in which the second part 22 of the protective covering 2 over the first Part 21 of the protective cover 2 is moved. Alternatively, the second part 22 of the protective covering 2 can also be displaceable under the first part 21 of the protective covering 2 or the second part 22 of the protective covering 2 can be arranged in a stationary manner on the workpiece holder 1 while the first part 21 is designed to be displaceable.
    This configuration enables the user of the sawing device, for example, if he introduces a piece of wood via the feed side 14 into the cutting space 13 of the workpiece holder 1, not initially having to move the protective cladding 2, but rather simply being able to push the sawn material into the cutting space 13.
    In the exemplary embodiment shown, a stop for the sawing material is provided on the removal side 15, so that the user can push the sawing material to the stop in the rest position of the workpiece holder 1 and thus can simply position the sawing material in the workpiece holder 1 and can receive pieces of wood of uniform length. In order to push the material to be sawn further into the cutting space 13, the user of the sawing device can simply press the arm against the second part 22 of the protective covering 2, for example, and push it over the first part 21.
    The exemplary embodiment shown in FIGS. 1 to 7 is a rocking saw device in which the workpiece holder 1 comprises a user-side support part 10 and a saw-side support part 11 and the user-side support part 10 and the saw-side support part 11 at an angle, in particular from 70 to 90 °, are arranged to each other. The workpiece holder 1 also has two foot parts 12. This configuration of the sawing device ensures that the sawdust rests stably on the two support parts or surfaces of the workpiece holder 1/31, whereby movement of the sawdust is prevented as far as possible. This precludes dangerous turning of the sawdust during the cutting in the workpiece holder 1.
    In the exemplary embodiment shown, the sawing device further comprises a saw blade cover 6 covering the saw blade 3 from above. The saw blade cover 6 serves to preclude a user of the sawing device from reaching into the saw blade 3 from above, which means that a considerable amount of work for the user, particularly when the sawing device is in operation There would be a risk of limb amputation.
    In the exemplary embodiment shown, as can be seen in FIG. 2, a cutting opening 17 is arranged in the workpiece holder 1 or on the saw-side support part 11 of the workpiece holder 1 in the cutting plane of the saw blade 3, the saw blade 3 in the sawing position through the cutting opening 17 by pivoting the Workpiece holder 1 can be introduced into the cutting space 13.
    Furthermore, a saw blade cladding 5 with a passage gap 51 is arranged on the workpiece holder 1 or on the saw-side support part 11 of the workpiece holder 1 (see FIG. 2). The saw blade cover 5 is oriented normal to the cutting plane of the saw blade 3 and the saw blade 3 is covered in the rest position by the saw blade cover 5 in the direction of the cutting space 13.
    To protect the user, the workpiece holder 1 can only be brought into the sawing position in the starting position of the protective covering 2. If the protective covering 2 is displaced from the initial position or the cutting space 13 is covered less along its longitudinal extent than in the initial position, the workpiece holder cannot be brought into the sawing position.
    In the exemplary embodiment shown, the workpiece holder cannot be brought into the sawing position, in particular when the second part 22 of the protective covering 2 is shifted manually from the starting position, since a lock is formed.
    This locking is shown in Figures 2 and 4 in detail. It can be seen here that in the exemplary embodiment shown, when the second part 22 of the protective casing 2 is displaced from the starting position, a mechanical interlock is formed between the protective casing 2 and the saw blade cover 6, so that the / 31
    Workpiece holder 1 cannot be brought into the sawing position. Alternatively or in addition, any other or further e.g. electrical, locking may be provided.
    If the protective covering 2 is in the starting position, the user can move the workpiece holder 1 from the rest position into the sawing position, for example by pressing against a handle 16 attached to the workpiece holder 1, and cut sawing material located in the cutting space 13. In the sawing position, the saw blade 3 passes through the passage gap 51 into the cutting space 13, so that the sawn material is cut in the cutting space 13.
    In the exemplary embodiment shown, the workpiece holder 1 can be moved from the rest position into the sawing position with a pivoting movement, the pivot axis of the workpiece holder 1 being oriented normal to the cutting plane of the saw blade 3. This means that the workpiece holder 1 is pivotally mounted about a pivot axis, which in the exemplary embodiment shown is aligned parallel to the axis of rotation of the saw blade 3. The bottom end of the foot parts 12 of the workpiece holder 1 is pivotally mounted on the sawing device.
    1, 3, 6a and 6b show views of the sawing device with the workpiece holder 1 in the rest position. The protective cladding 2 is in the initial position, so that a pivoting of the workpiece holder 1 into the sawing position would be possible for a user of the sawing device.
    As can be seen in particular in FIG. 3, the saw blade cover 6 engages in the starting position of the protective cover 2 in the exemplary embodiment shown in a recess 23 arranged in the first part 21 of the protective cover 2, which lies in the cutting plane of the saw blade 3. This recess 23 in the first part 21 of the protective cover 2 is arranged in the exemplary embodiment shown in relation to the cut opening 17 of the workpiece holder 1 and to the passage gap 51 in the saw blade cover 5 such that the saw blade 3 easily swings into the cutting space when the workpiece holder 1 is pivoted from the rest position into the sawing position 13 of the workpiece holder 1 can be introduced.
    The second part 22 of the protective cladding 2 is arranged in the starting position in relation to the first part 21 of the protective cladding 2 such that access into FIGS
    Cutting space 13 along its longitudinal extent is permanently covered in a danger zone around the saw blade 3, but the recess 23 in the first part 21 of the protective covering 2 is not covered by the second part 22 of the protective covering 2. This configuration of the protective cover 2 ensures the greatest possible protection of the user of the sawing device against injuries from the saw blade 3, since an unintentional intervention in the saw blade 3 by a cooperation of the saw blade cover 6, the protective cover 2 and the saw blade cover 5 and by the user-side support part 10 of the workpiece holder 1 is prevented.
    FIGS. 5 and 7 show views of the sawing device in which the workpiece holder 1 is in the sawing position. It can be seen that in the sawing position the saw blade 3 penetrates into the cutting space 13 through the passage gap 51 in the saw blade cladding 5, the cut opening 17 and the recess 23 in the first part 21 of the protective cladding 2, while the saw blade cover 6 in the area of the receptacle in the first Part 21 of the protective covering 2 slides over the protective covering 2.
    In the end position of the sawing position, in which the saw blade 3 has completely cut through the sawdust, the movement of the workpiece holder 1 is stopped by a stop, so that a further pivoting of the workpiece holder 1 in the direction of the saw blade 3 is no longer possible.
    In order to make it easier for the user of the sawing device to operate the protective covering 2, in the exemplary embodiment shown a reset means, which in the exemplary embodiment is a spring, is arranged for the independent return of the second part 22 of the protective covering 2 to the starting position, so that the user need not manually return the second part 22 to the starting position. Alternatively or additionally, hydraulic or elastic return means can be provided.
    For example, if the user would like to advance a piece of sawed material that has already been partially sawn off into the cutting space 13 of the workpiece holder 1, he can simply press the arm against the movable second part 22 of the protective device 2, for example, so that it moves over the first part 21 of the protective device 2 is moved and the user can push the sawn material for example up to the stop on the removal side 15 of the workpiece holder 1.
    / 31
    If the second part 22 of the protective device 2 is displaced from the initial position, the saw blade cover 6 engages in a strip arranged on the second part 22 in the exemplary embodiment shown (see FIGS. 2 and 4) and a mechanical lock is formed, so that the user can hold the workpiece 1 can no longer pivot from the rest position into the sawing position. In the exemplary embodiment shown, pivoting into the sawing position is only possible again when the second part 22 of the protective covering 2 has returned to the starting position.
    In order to ensure a particularly simple handling for the user of the saw, a further restoring means, for example a further spring, is provided in the exemplary embodiment shown for an independent return of the workpiece holder 1 into the rest position. In the exemplary embodiment shown, the further restoring means or the further spring is mounted on the sawing device in such a way that the user of the sawing device must apply slight pressure when transferring the workpiece holder 1 into the sawing position, so that the spring is tensioned. After cutting the material to be sawn, the workpiece holder 1 automatically returns to the rest position due to the spring action when the user reduces the pressure on the workpiece holder 1.
    The further restoring means or the further spring for returning the workpiece holder 1 to the rest position is tensioned in the end position of the sawing position, so that the user only needs to reduce or release the pressure on the workpiece holder 1 to return the workpiece holder 1 to the rest position. In the exemplary embodiment shown, a handle 16 is arranged on the workpiece holder 1 or on the user-side part 10 of the workpiece holder 1 for particularly simple operation of the workpiece holder 1 or simple pivoting.
    A further simplification of operation in the exemplary embodiment shown results from the fact that a guide rail is arranged on the user-side support part 10 of the workpiece holder 1, along which the protective cladding 2 or the second part 22 of the protective cladding 2 can simply be displaced along the longitudinal extent of the cutting space 13.
    If the user of the sawing device has cut a piece of sawing material, for example a log, as described above, this falls into the end position of / 31
    In the exemplary embodiment shown, the sawing position is directly on a conveyor belt 7 which is arranged on the removal side 15 of the workpiece holder 1 and is used for the removal of the cut sawing material. As an alternative to this, the user of the sawing device can simply remove the cut sawdust on the removal side of the workpiece holder 1 when the workpiece holder 1 is in the rest position.
    In order to ensure the greatest possible protection for a user of the saw device against unintentional intervention in the saw blade 3, the distance between the saw blade 3 and that of the saw blade 3 in the saw device according to the invention, as shown in FIGS distant end of the second part 22 250 mm, the distance between the saw blade 3 and the end of the first part 21 230 mm distant from the saw blade 3 and the distance between the material to be sawn in the cutting space 13 and the saw blade 3 in the rest position of the workpiece holder 1 50 mm.
    This configuration of the sawing device ensures that the distance between the user's hands and the saw blade 3 is sufficiently large in every position of the workpiece holder 1 and that the safety requirements for sawing devices currently defined by the standard are met.
    In all conceivable embodiments of a sawing device according to the invention, the protective cladding 2 can also be made in one piece and movable, in particular displaceable. Such a protective cladding 2 can be, for example, a foldable cladding that can be folded back or pushed in the direction of the removal side 15 for simple loading of the workpiece holder 1 with sawing material. Subsequently, the folded one-piece protective covering 2 can independently e.g. return to the starting position by means of a reset means or be pulled into the starting position by the user. In this case, the cladding can have an opening through which the saw blade 3 can be introduced into the cutting space 13 in the sawing position.
    Alternatively, in all embodiments of a sawing device according to the invention, the protective cladding 2 can also be made in several parts, at least one part of the protective cladding 2 arranged on the discharge side being arranged in a stationary or movable manner and at least one further part of the protective cladding 2 arranged on the feed side being arranged movably on the workpiece holder 1, preferably all parts the protective cover 2 can be moved above or below one another. In order to make it easier for the user of a sawing device of this type to load the workpiece holder 1 with sawing material, the at least one further part of the protective covering 2 arranged on the feed side can be slid over or under the at least one part arranged on the discharge side.
    With such multi-part configurations of the protective cladding 2, it is possible, for example, for two or more parts of the protective cladding 2 to be arranged on the workpiece holder 1 starting from the saw blade 3 in the direction of the feed side 14. These can be arranged in a fan-like manner above or below one another, in particular displaceable, so that they can be moved together or separately from the starting position into a feed position. In the feed position, the other parts of the protective cladding 2 can be displaced above or below the at least part of the protective cladding 2, which is arranged on the workpiece holder 1 from the saw blade 2 in the direction of the removal side 15, for example in a stationary manner.
    In all embodiments of a sawing device according to the invention, the workpiece holder 1 can furthermore be brought into the sawing position only in the starting position of the at least one movable part, in particular the second part 22, of the protective covering 2. When, for example, the at least one movable part of the protective covering 2 is moved manually from the starting position, a lock can be formed, as described above, so that the workpiece holder 1 cannot be brought into the sawing position.
    This lock can not only be a mechanical lock, as already mentioned above, but can alternatively or additionally also be an electrical lock. Such locking can be achieved, for example, if, for example, an electrical contact is interrupted when the protective covering 2 is in the feed position, while the electrical contact is made when the protective covering 2 is in the starting position. Thus, the workpiece holder 1 can only be brought from the rest position into the sawing position when the electrical contact has been made.
    In the case of a sawing device according to the invention, a workpiece holder 1, which is designed as a roller table, can also be provided instead of a pivotable workpiece holder 1, such as a rocker. In this case, the workpiece holder 1 or the roller table with a linear movement of / 31
    Rest position can be brought into the sawing position, the direction of movement of the roller table being oriented parallel to the cutting plane of the saw blade 3.
    In this case, a further reset means, in particular a further spring, can also be provided for simple operation and an independent return of the workpiece holder 1 or the roller table to the rest position. In this case, the user of the sawing device presses against the roller table in order to bring it from the rest position into the sawing position, whereby he has to overcome the spring force and the spring is tensioned. Once the user has cut the material to be sawn, he can reduce the pressure on the workpiece holder 1, the spring contracts and the roller table automatically returns to the rest position.
    In such a saw device equipped with a workpiece holder 1 designed as a roller table, the protective cladding 2 can be designed, for example, as a one-piece or two-part or multi-part protective cladding 2, which is in particular partially slidable. An example of such a protective cladding 2 would be a configuration in the form of a semi-hollow cuboid or semi-hollow cylinder jacket, in which the sawdust can be inserted or inserted laterally and which can be supplemented with a saw blade cladding 5 with a passage gap 51 on the saw side.
    In such a sawing device, a cutting opening 17 can also be arranged in the workpiece holder 1 or in the roller table in the cutting plane of the saw blade 3, the saw blade 3 being able to be introduced into the cutting space 13 through the cutting opening 17 in the sawing position.
    The embodiment shown in Figures 1 to 7 of a sawing device according to the invention has as saw blade drive 8 for the saw blade 3 via an electric motor with direct drive. As an alternative to this, a sawing device according to the invention can also include an electric motor with a V-belt drive or an internal combustion engine with a V-belt or a power take-off gear with a V-belt, the drive 8 and the saw blade 3 possibly being provided between the saw blade.
    As an alternative to the circular saw blade in the exemplary embodiment shown, a sawing device according to the invention can have several circular saw blades or at least one jigsaw blade or band saw blade as the saw blade 3.
    / 31
    权利要求:
    Claims (16)
    [1]
    claims
    1. sawing device for cutting wood comprising at least one saw blade (3) and a workpiece holder (1) with a cutting space (13) for inserting sawdust,
    the workpiece holder (1) is movably arranged, in particular pivotable or displaceable, between a rest position remote from the cutting edge of the saw blade (3) and a sawing position close to the cutting edge of the saw blade (3),
    - A protective covering (2) for at least partially covering the cutting space (13) is arranged on the workpiece holder (1), characterized in that both in the rest position and in the sawing position, access to the cutting space (13) from the protective covering (2 ) is at least partially permanently covered.
    [2]
    2. Sawing device according to claim 1, characterized in that the protective covering (2) can be transferred reversibly from a starting position into a position with a lower coverage of the cutting space (13) compared to the starting position, the workpiece holder (1) only in the starting position of the protective covering (2) can be brought into the sawing position.
    [3]
    3. Sawing device according to claim 1 or 2, characterized in that the
    Protective covering (2) is made in one piece and movable, in particular displaceable.
    [4]
    4. Sawing device according to claim 1 or 2, characterized in that the
    Protective cladding (2) is designed in two or more parts, at least one part of the protective cladding (2) arranged on the discharge side or on a removal side (15) for removing the cut sawn material being stationary or movable and at least one further feed side or on one of the removal side (15) opposite feed side (14) for feeding the part of the protective casing (2) to be cut is arranged movably on the workpiece holder (1), it being provided in particular that the protective casing (2) is made in two parts, a first Part (21) of the protective cladding (2) arranged on the discharge side and a second part (22) of the protective cladding (2) arranged on the feed side is slidably arranged on the workpiece holder (1), the second part (22) above or below the first part ( 21) is displaceable.
    [5]
    5. Sawing device according to one of the preceding claims, characterized in
    17/31
    - That the workpiece holder (1) comprises a user-side support part (10) and a saw-side support part (11), it being provided in particular that the user-side support part (10) and the saw-side support part (11) of the workpiece holder (1) at an angle of 70 to 90 ° to each other,
    - In particular that the protective covering (2) is guided at least partially displaceably along a guide rail, in particular on the user-side support part (10) of the workpiece holder (1), along the longitudinal extent of the cutting space (13).
    [6]
    6. Sawing device according to one of the preceding claims, characterized in that a saw blade cover (6) covering the saw blade (3) is provided.
    [7]
    7. Sawing device according to one of claims 2 to 6, characterized in that the workpiece holder (1) can only be brought into the sawing position in the starting position of a movable, in particular the second, part (22) of the protective cover (2), in particular being provided that when the movable part, in particular the second part (22), is moved or moved, the protective casing (2) from the starting position is formed with a mechanical and / or electrical lock, in particular between the protective casing (2) and the saw blade cover (6) , so that the workpiece holder (1) cannot be brought into the sawing position.
    [8]
    8. Sawing device according to one of the preceding claims, characterized in that a resetting means, in particular a spring, is provided for an independent resetting of the protective covering (2), in particular the second part (22) of the protective covering (2), into the starting position and / or that the protective covering (2) is transparent and / or consists of impact and / or impact-resistant, in particular heat-resistant, material.
    [9]
    9. Sawing device according to one of the preceding claims, characterized in that
    - The distance between the saw blade (3) and the end of the second part (22) of the protective cover (2) remote from the saw blade (3) is 250 mm or larger in the starting position and / or
    - The distance between the saw blade (3) and the end of the first part (21) of the protective cover (2) remote from the saw blade (3) is 230 mm or larger in the starting position.
    18/31
    [10]
    10. Sawing device according to one of the preceding claims, characterized in that a cut opening (17) is arranged on the workpiece holder (1), in particular on the saw-side support part (11) of the workpiece holder (1), in the cutting plane of the saw blade (3), wherein the saw blade (3) can be inserted into the cutting space (13) through the cut opening (17) in the sawing position.
    [11]
    11. Sawing device according to one of the preceding claims, characterized in that a saw blade cover (5) with a passage gap (51) is arranged on the workpiece holder (1), in particular on the saw-side support part (11) of the workpiece holder (1),
    - The saw blade cladding (5) is aligned normal to the cutting plane of the saw blade (3) and
    - The saw blade (3) in the rest position is covered by the saw blade cover (5) in the direction of the cutting space (13) and the saw blade (3) in the sawing position can be introduced through the passage gap (51) into the cutting space (13).
    [12]
    12. Sawing device according to one of the preceding claims, characterized in
    - That the workpiece holder (1) can be brought with a linear movement from the rest position into the sawing position, the direction of movement of the workpiece holder (1) being parallel to the cutting plane of the saw blade (3) or
    - That the workpiece holder (1) can be moved from the rest position into the sawing position with a pivoting movement, the pivot axis of the workpiece holder (1) being oriented normal to the cutting plane of the saw blade (3),
    - In particular, that a further restoring means, in particular another spring, is provided for an independent return of the workpiece holder (1) to the rest position.
    [13]
    13. Sawing device according to one of the preceding claims, characterized in that in the rest position of the workpiece holder (1) the distance between the material to be sawn in the cutting space (13) and the saw blade (3) is 50 mm or larger.
    [14]
    14. Sawing device according to one of the preceding claims, characterized in that the saw blade drive (8) of the saw blade (3) is an electric motor with direct drive or an electric motor with V-belt drive or an internal combustion engine with V-belt or a pto shaft transmission with V-belt, wherein
    19/31 a gear is optionally provided between the saw blade drive (8) and the saw blade (3).
    [15]
    15. Sawing device according to one of the preceding claims, characterized in that at least one circular saw blade or jigsaw blade or band saw blade is provided as the saw blade (3).
    [16]
    16. Sawing device according to one of the preceding claims, characterized in that on the removal side of the workpiece holder (1) a device for removing cut saw material, in particular a conveyor belt (7) is arranged.
    20/31
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    同族专利:
    公开号 | 公开日
    DE102019117408A1|2020-01-02|
    AT521147B1|2019-11-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE8024996U1|1980-12-18|Ebert, Anton, 7592 Renchen|Circular saw to length|
    FR985510A|1949-02-21|1951-07-19|Pratica Soc|Movable guard for circular saws|
    DE202006010777U1|2006-07-11|2006-09-28|Scheppach Fabrikation Von Holzbearbeitungsmaschinen Gmbh|Firewood circular saw has frame on which is drivable circular saw mounted on shaft and forward feed component for wood via accommodation channel|
    EP1992461A1|2007-05-15|2008-11-19|Posch Gesellschaft m.b.H.|Tilting saw device|
    DE202010017503U1|2010-04-14|2011-12-08|Binderberger Maschinenbau Gmbh|Schneidgutwippe|
    DE102010014996A1|2010-04-14|2012-12-27|Binderberger Maschinenbau Gmbh|Circular saw i.e. rocker circular saw, for use with tractor, has supporting table and rear wall covered by protection cover, where cover extends on sides of slot, at distance over circular table, to prevent complete access by person|
    DE102014108998A1|2014-06-26|2015-12-31|Mafell Ag|table saw|
    DE102020100373A1|2020-01-09|2021-07-15|HMG Heß GmbH & Co. KG|Cutting device|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    AT505362018A|AT521147B1|2018-06-29|2018-06-29|Sliding protective cover|AT505362018A| AT521147B1|2018-06-29|2018-06-29|Sliding protective cover|
    DE102019117408.2A| DE102019117408A1|2018-06-29|2019-06-27|Sliding protective cover|
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