EP1439044B1 - Wood working machine with a work stop system - Google Patents

Abstract

The woodworking machine has at least one stop (5) to guide the workpiece (W) on the resting surface (A). The machine has at least two stops (5, 6), which are fitted together on the base body (4) of the stop system. The stops are retracted into or moved out from the resting surface by moving the base body.

Description

The invention relates to a woodworking machine, in particular format saw with a stop system, wherein the workpiece to be machined by a machining tool rests on the support surface of a support table, with several stops for guiding the workpiece, wherein at least two stops together on a base body of the stop system with different distances to the machining tool arranged and movable respectively in or out of the support surface by movement of the base body.

Stop systems for processing machines are known. The workpiece to be machined is placed on the support surface of a support table and guided to a stop. The stop is adjusted to the desired width before machining the workpiece and then performed the workpiece on this stop for processing.

Such a stop system is known for example from the document DE 36 37 713 C2. There, a positioning device for plate or rod-shaped workpieces is presented in processing machines, in which on the level of the support surface for the plates to be machined or rod-shaped workpieces a plurality of stops is arranged by simply pivoting about an axis in the plane of the editing table or Rest table can be swung. All stops are arranged on a single shaft and by means of an actuating element differently adjustable and each individually used. The positioning stops are arranged one behind the other in the machining direction or conveying direction and each have the same distance from each other. The embodiment shown here is structurally very expensive and therefore expensive. Furthermore, this proposal is very cumbersome in the operation, since the respective individual attacks are to press or to control. A short-term and rapid change of the attacks, for example, due to a format change is not possible with this proposal.

For example, a sliding table saw are also known. Such sliding table saws have a trimming table, which passes by a saw blade. On the Besäumtisch a cross table is usually attached. The workpiece rests on the trimming table and, with appropriate dimensions, also on the transverse table. The stop or the stops are then located on the transverse table and usually reach to on the trimming table. When machining workpieces of different processing width, the problem arises that one must use different stops for certain working widths. The stops for smaller widths then hinder the placement of the workpieces, for example, if there are very wide workpieces that are to be created on one of the machining tool of the processing machine furthest stop then. In order to prevent obstruction of the workpieces by the attacks on the entire working width, then the closer to the machining tool stops must then be dismantled. This is a time-consuming process that hampers in particular the workflows when often different cutting widths of workpieces must be realized on the machine tools.

Furthermore, stop systems are known, with at least two together arranged on a base body of the stop system stops, wherein the stops are movable by a movement of the body in or out of the support surface.

Based on the above-described prior art, the invention has the object to develop a stop system, which no longer has the disadvantages described above.

The object of the invention is achieved by a woodworking machine according to claim 1. The joint movement of the stops by the movement of the body, the operability is greatly facilitated. The position of the main body serves to activate or deactivate the possibly arranged at different positions stops. This solution is also structurally simple feasible, which combines good ergonomics and usability with little effort to implement the proposal according to the invention.

According to the invention it is also provided that the attacks are not only moved back by the base body with respect to the support surface. Of course, all other movements are conceivable which cause the stop to move away from the support surface, that is to say in such a way that the stop is no longer able to interact with the workpiece. For example, it is also possible to move the main body upwards, whereby the stopper is moved away from the support surface or to turn the main body in a suitable manner.

By means of this solution, a woodworking machine according to the invention is provided with an accurate and flexible stop system on the support table side, which is used for universal execution of cuts, in which in particular exact parallelism of the edges to be cut is promoted against the voltage applied to the attacks edge. Characterized in that at least one stop is lowered below the support surface, at the most frequently occurring, different widths, at least the, with the smallest distance to the machining tool stop then be lowered below the support surface when a wider workpiece must be processed. Furthermore, the contact surface, for example, when loading with workpieces, such as large wood panels, can be cleared very quickly by simply all attacks are lowered below the contact surface, without the attacks or the attacks bearing parts must be disassembled consuming. In this case, the invention allows that the stop system has a plurality of stops and, for example, only one stop when it is not needed, is lowered and another stop remains in use, so forms a stop for the workpiece.

For example, it is possible that each lowerable stops are used on a support beam, which are moved, as needed, upwards over the support surface when they are needed.

In an advantageous development of the invention provided that the attacks of the body are arranged at different distances from the machining tool and in different positions, in particular height or angular positions on the base body. It is envisaged, for example, that the base body is movable at right angles to the bearing surface and the stops have different lengths, that is to say elevations, and the respective stop is switched on or off by the position of the base body. The same is in principle also possible with a rotatable base body, in which the stops in different angular positions of the rotatable base body are optionally also arranged with the same or different lengths. The stops are arranged at different distances from the processing tool in order to realize a format change in the otherwise gleichbauender inventive woodworking machine in a simple manner.

According to the invention it is provided that the base body is rotatable or longitudinally movable, in particular at right angles to the support surface can be raised or lowered. All of these different variants serve to move the base body with the stops arranged thereon out of the support surface or, conversely, to position the stops in the support surface in the same way. According to the invention it is also provided that, for example, the stops project upwards, but each have a different effective length.

According to an advantageous embodiment of the stop system according to the invention, it is provided that the stop system can be lowered so that the respectively suitable for processing stop is positioned in the support surface.

By means of such a system made available according to the invention, at least two, but a total of significantly more stops can be realized on the support surface the support table are arranged, and which are then arranged at different altitudes, in each case the altitude is to be controlled, the stop width of the respective stop is just needed. The base body allows in a simple manner positioning all attacks to size. The various stops are arranged at fixed distances from each other on the base body. Moving the body thus positioned the selected stop in a simple and easy to use. The same body is used with the same adjustment for the dimensionally accurate setting of all other stops when they are selected.

The lowering or raising of the stops with respect to the support surface takes place according to an advantageous embodiment parallel or perpendicular to the support surface of the support table. This ensures that always an exact positioning of the workpieces can be done on the abutment edges, whereby the dimensional accuracy is increased or guaranteed overall. Known from the prior art solutions are either not lowered into another plane or only by pivoting a stop with a plurality of stop surfaces, which is mounted on a shaft. However, this solution results in that the stop is then no longer adjustable at right angles to the support surface, so that the now proposed solution of the parallel or rectangular lowering of the stops with respect to the support surface solves this problem elegantly.

According to the invention it is further provided that a plurality of stops are arranged on at least one base body, such that the stop which has the smallest distance from the machining tool, in the lowest altitude in relation to the working plane and the stop with the greatest distance to the machining tool in another , then the highest Altitude is arranged in relation to the working plane. It is therefore provided, for example, a stair-step-like design of the individual stops on the base body, wherein the individual stops are arranged in increasing altitude, the farther the stop is removed from the machining tool, the higher the altitude in which it is arranged.

Another aspect of the stop system according to the invention is specified by the fact that a plurality of base body are provided, whose distance relative to the machining tool is adjustable or adjustable. On the one hand is ensured by this embodiment, that the distance between the base body relative to the machining tool can be adjusted, on the other hand, it is further ensured that, for example, several basic body with several, arranged there stops, for example, can be arranged at the same distance from the machining tool. Of course, then an arrangement of the respective desired stop in the desired altitude is possible.

According to an advantageous embodiment of the invention, it is provided that at least two main body are adjustable by a common adjustment in their distance from the machine tool. By coupling the main body by means of a common adjustment system, the adjustment of the desired workpiece width is facilitated overall. This makes the stop system according to the invention even more comfortable.

According to the invention it has also been found that it is advantageous if a lowering device is provided for lowering at least one main body. By means of a lowering device can then be adjusted via a respective actuator, the respective desired altitude of the body and thus the respective desired stop.

It is also advantageous if a plurality of base body can be lowered or raised via a common lowering device in different altitude. This is particularly advantageous if the stops or base body are arranged parallel to each other, so that a longer workpiece can be applied to corresponding attacks of several bodies simultaneously.

Then it is of course very advantageous if these bodies have a common lowering device, which adjusts both main body simultaneously by an actuating action in the respective desired altitude.

An advantageous development of the stop system according to the invention is characterized in that at least three altitudes can be adjusted by means of the lowering device. Thus, for example, the spaced apart with the smallest distance from the machining tool side of the body is a first stop. A second stop can then be arranged further spaced apart on the base body in a higher altitude. Already with this simple embodiment by means of a base body with an elevated stop on the side furthest from the machining tool, three altitudes can be realized in total. It has also been found according to the invention that it is advantageous if the lowering device for the main body has a lowering mechanism which is designed as a toggle mechanism with knee levers which are adjustable via joints and at least one additional latching position. It is also advantageous if the lowering mechanism can be operated via an operating element. Due to the execution of the toggle mechanism with corresponding locking positions, the altitude for the respective attack to be controlled is always selected exactly. This is a simple but very effective embodiment of the stop system according to the invention.

Entpending an advantageous development, it is provided that the lowering device are indicated by a rack or a threaded spindle. An operating element is of course also provided. It is further made possible by this embodiment, to define the different heights by locking devices or spacers exactly on the rack or the threaded spindle.

A development of the stop system according to the invention is characterized in that a pneumatic or hydraulic cylinder forms the lowering device. Again, certain altitudes are provided by means of appropriate settings.

Another aspect of the invention is characterized in that at least two main body are provided which are interconnected by at least one stop rail. The stop rail is always advantageous when workpieces are to be processed, which are to be cut in parallel, but which are so short that they can not be applied to two stops simultaneously. By means of this cross-connecting stop rail, which is then arranged parallel to the machining tool, even such, very short workpieces can be cut very precisely and conveniently parallel.

A further development of the stop system according to the invention proposes that two stop rails are provided which connect at least two main body corresponding to the lower, front stop and the upper, rear stop together. This embodiment is particularly advantageous if, for example, the workpiece has exactly the width of the distance between the front, bottom and the rear, upper stop. This embodiment can also be used, for example, to slit workpieces or to provide them with a groove. The groove depth can be determined by the height adjustment of the body with the attacks arranged thereon.

According to the invention, it has also been found, in each case, to provide a guide system consisting of guides for each basic body. This ensures that the main body always exactly exactly parallel spaced from the machine tool can be positioned.

It is particularly advantageous if a drive system is provided for each basic body. This makes it possible to more easily adjust the base bodies in their clearance widths to the machining tool. These drive systems are made possible in different embodiments. For example, electric motor drives or actuators are provided which bring the main body in each case in the desired position. Of course, an embodiment of the drive system by means of hydraulic or pneumatic drives is possible.

It has also been found that it is advantageous if the drive systems for the main body are coupled in such a way that they always run in parallel and have only one common actuating element.

It is also advantageous if the drive system for the main body is designed as a rack with pinion and the coupling as a continuous, all pinion connecting axis and the actuator as a handwheel. This allows all basic body in their distance from the machining tool by adjusting the handwheel adjusted together.

In the event that a drive system is used for the main body, which is not designed to be self-locking, it is provided to arrange a respective clamping system for each body.

It is preferably further provided to couple all clamping systems such that they also have a common operating element and are always clamped together or solved.

An advantageous development of the invention therefore provides that the drive system is designed to be self-locking for the main body or the stops. Thus, the clamping systems described above can be omitted.

The invention also provides a woodworking machine, in particular a format saw with a stop system as described above.

The invention is described below with reference to Ausführungspeispielen and drawing on.

Fig. 1

eine Seitenansicht des erfindungsgemäßen Anschlagsystems mit Grundkörper in abgesenkter Stellung;

Fig. 2

eine Seitenansicht mit Grundkörper in einer ersten angehobenen Stellung;

Fig. 3

eine Seitenansicht mit Grundkörper in einer zweiten angehobenen Stellung;

Fig. 4 a, b

weitere Darstellung der Erfindung mit Führungssystem;

Fig. 5 a, b

weitere Ausführungsform der Erfindung mit Anschlagschiene;

Fig. 6 a, b

vergrößerte Darstellung der Ausführungsform nach Fig. 4.

Show it:

Fig. 1

a side view of the stop system according to the invention with basic body in lowered position;

Fig. 2

a side view with basic body in a first raised position;

Fig. 3

a side view with main body in a second raised position;

Fig. 4 a, b

further illustration of the invention with guide system;

Fig. 5 a, b

another embodiment of the invention with stop rail;

Fig. 6 a, b

enlarged view of the embodiment of FIG. 4th

In Fig. 1 is a side view of the stop system according to the invention is shown, in which the base body 4 is in the lowered position. This position can also be referred to as the parked position in which the complete stop system is located under the surface of the support. The support is indicated in the embodiment with the surfaces of the transverse table 3 and the trimming table 2. The surface of the transverse table 3 is designated by the reference symbol A as a working plane. In this position, workpieces W can be conveniently placed without having to lift them over the stops 5, 6 and the base body 4. At the same time, another stop system, not shown here, can be operated on the transverse table 3, without colliding with the stops 5, 6.

The reference numeral 1 denotes the saw blade or the machining tool. The trimming table 2 is located on the left next to the saw blade 1 as shown in FIG. 1. This is followed by the transverse table 3, which is suspended in the trimming table 2. The base body 4 is located in a lowered position, in which both stops 4, 5 below the working plane A, which indicated by the surface of the trimming table 2 and the transverse table 3 above the trimming table 2 and the transverse table 3 extends is located. The main body 4 has a lower, front stop 5. This lower, front stop 5 is suitable for machining or guiding narrow workpieces W. The main body 4 also has a rear, upper stop 6, which is wider for the leadership Workpieces W is suitable.

Below the base body 4 is the lowering device 7. With this lowering device 7 you can adjust the attacks or the base body 4 in at least three height positions or positions. This is shown for example in the illustrations according to FIGS. 1 to 3. The lowering device 7 consists in the embodiment of a lowering mechanism, which is designed as a toggle 12. The toggle levers 12 are pivotable about joints 13, whereby a raising or lowering is effected. The actuation of the lowering device 7 via an operating element 11, which is designed for example as a handwheel, and which controls the toggle lever 12 for on or off or swinging. The lowering device 7 can of course also be specified by a design with a rack or a threaded spindle, a pneumatic or hydraulic cylinder or other suitable technical solutions.

2, the stop system according to the invention is shown in a first raised position of the main body 4. The workpiece W is applied to the rear, upper stop 6 and is guided by this during the cutting process. The lower, front stop 5 is still in a lowered position, also the entire body 4. This is also still below the working level A.

On the lowering device 7 it can be seen that an adjustment of the knee lever 12 was carried out. Advantageously, the execution of the lowering device 7 is provided with toggle lever 12 and joint 13 with corresponding locking positions in order to keep the main body 4 in the respective desired height adjustment after reaching this setting.

The further reference symbols have already been presented in FIG. 1 and will not be additionally explained again.

Fig. 3 shows the stop system according to the invention in a second raised position. In this case, the entire base body 4 is above the working plane A. The workpiece W is applied in this illustration to the lower, front stop 5. It can be seen that one can insert by means of this embodiment narrower workpieces for processing, as in the embodiment of FIG. 2. The adjustment of the corresponding altitude of the body 4 is again via the lowering device 7, which also in this upper position by a Locking position is fixed. The base body 4 is arranged above the working plane A. In this position, workpieces that rest for example only on the trimming table 2 on the front stop 5, which now extends in this position over the trimming table 2, are performed exactly parallel to the cutting.

Figures 4a and 4b show a further illustration of the invention in a side view and in a plan view. In addition to the features already described, in this illustration, in particular in FIG. 4b, guide systems 8 are schematically illustrated, in which the main body or bodies 4 are guided with the stops 4, 5 and, if appropriate, can be produced by their own drive systems, not shown. The adjustability of the base body 4 is symbolically indicated by the double file on the right next to the figure 4b. The main body 4 is guided for example sled-like. It is particularly advantageous if the guide system 8 is driven by a system in which all the drive systems are coupled in such a way that the base bodies 4 always travel in parallel and have only one common actuating element 11, not shown, by means of which all the base bodies 4 are adjustable are.

It is of particular advantage, of course, if the drive system is designed to be self-locking. In the event that a non-self-locking drive system is provided, a clamping system for each stopper 4 is provided in each case, all clamping systems are in turn coupled such that they also have a common actuator and can always be clamped together or solved. Also, the clamping system is, as well as the drive system, not shown in the figures, since it is not essential for understanding the invention.

The embodiment of Figures 4a and 4b shows a particular embodiment of the base body 4, and the base body 4, such that for the rear upper stop 6 and the lower front stop 5 replaceable stop elements are provided. These elements are then positioned on the common body 4, so as to obtain at least two abutment surfaces, which - as already mentioned - are arranged in different levels or altitudes, so that they are adjustable in the respective height position by means of the lowering device 7. The stop elements are easily interchangeable with signs of wear. It must not be changed the entire body 4, if a stop is damaged.

Figures 5a and 5b show a further embodiment of the invention with additional stop rails 10. The stop rail 10 connects at least two main body 4, either the front stops 5 or the rear upper stops 6. The stop rail 10 serves to support the paralellen cutting of short parts or workpieces that can not be applied to two stops simultaneously.

In the figures 6a and 6b is an enlarged view of Embodiment to see the figure 4. About the guide system 8, the base 4 are so far positioned on the saw blade 1, that the lower front stop 5 rests against the saw blade 1. This position can be used, for example, now to lead workpieces in the width between the saw blade 1 and the rear upper stop 6, for example, for cutting. This setting can also be used, for example, to introduce slots in stronger workpieces W with a certain depth.

The claims now filed with the application and later are attempts to formulate without prejudice to the attainment of further protection.

If, on closer examination, in particular also of the relevant prior art, it appears that one or the other feature is beneficial for the purpose of the invention, but not of decisive importance, it is of course already desired to formulate such a feature , in particular in the main claim, no longer having.

The references cited in the dependent claims indicate the further development of the subject matter of the main claim by the features of the respective subclaim. However, these are not to be understood as a waiver of obtaining independent, objective protection for the features of the dependent claims.

Features that have hitherto been disclosed only in the description may be claimed in the course of the method as of essential importance to the invention, for example to distinguish from the prior art.

Features that have been disclosed only in the description, or even individual features of claims that have a plurality of features may be included at any time to distinguish them from the prior art in the first claim, even if such features were mentioned in connection with other features or achieve particularly favorable results in connection with other features.

Claims (11)

1. Wood working machine, in particular final trimming saw, with a stop system, the work piece to be machined by a machining tool being supported on the supporting surface (A) of a supporting table, with several stops (5, 6), for guiding the work piece (W), at least two stops (5, 6) being arranged together at a basic body (4) of the stop system with different distances to the machining tool (1), and each being movable in or out of the supporting surface (A) by a movement of the basic body (4), characterised in that the basic body (4) can be lowered or lifted by means of a lowering device (7) in relation to the supporting surface (A), and the stops (5, 6) are arranged in different parallel levels in relation to the supporting surface (A).
2. Wood working machine according to claim 1, characterised in that the basic body (4) can be moved longitudinally, and can be lifted or lowered, in particular rectangular, to the supporting surface (A).
3. Wood working machine according to one of the preceding claims, characterised in that several stops (5, 6) are arranged, in particular step-like, on at least one basic body (4), in such a way that the stop (5) with the smallest distance to the machining tool is arranged in the bottom-most level in relation to the working plane (A), and the stop (6) with a larger distance to the machining tool is arranged in another, higher level.
4. Wood working machine according to one of the preceding claims, characterised in that several basic bodies (4) are provided the distance of which in relation to the machining tool can be regulated, respectively adjusted, in particular at least two basic bodies (4) being able to be regulated by a common regulation system in their distance relative to the machining tool.
5. Wood working machine according to one of the preceding claims, characterised in that several basic bodies (4) can be lowered, respectively lifted, in different levels via a common lowering device (7).
6. Wood working machine according to one of the preceding claims, characterised in that at least three levels can be set by means of the lowering device (7).
7. Wood working machine according to one of the preceding claims, characterised in that a lowering device makes a rotating of the basic body (4) around a rotational axis orientated preferably parallel to the supporting surface (A) possible, and in this way moves the stops of the basic body in or out of the supporting surface (A).
8. Wood working machine according to one of the preceding claims, characterised in that the lowering device (7) for the basic body (4) has a lowering mechanism which is designed as toggle lever mechanism with toggle levers (12) adjustably via joints (13) with an additional catching position, and which can be operated via an operating element (11), the lowering device (7) in particular being realised by a toothed rack or a threaded spindle each with an operating element, and/or a pneumatic or hydraulic cylinder makes up the lowering device (7).
9. Wood working machine according to one of the preceding claims, characterised in that at least two basic bodies (4) are provided which are connected to each other by at least one stop rail (10), and in particular two stop rails (10) are provided connecting at least two basic bodies (4) corresponding at the bottom front stop (5) as well as at the top back stop (6).
10. Wood working machine according to one of the preceding claims, characterised by a guide system comprising guides (8) for each basic body (4), and in particular a driving system for each basic body (4), and that the basic body (4) is guided and supported in a guide system (8) in particular movably sledge-like.
11. Wood working machine according to one of the preceding claims, characterised in that the driving systems for the basic bodies (4) are coupled in such a way that they always run parallel, and have only one common operating element, and in particular the driving system for the basic bodies (4) are designed as toothed rack with a pinion, and the coupling is designed as continuous axle connecting all pinions, and the operating element is designed as handwheel, and in particular a clamping system is provided for each basic body (4), preferably all clamping systems being coupled in such a way that they have a common operating element, and always can be clamped or released together, and in particular the driving system for the basic body (4), respectively the stops (5, 6), are designed self-locking.

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