EP1815953A2 - Dead stop for a processing machine - Google Patents

Abstract

The stopper (1) has stock rail arranged on a machining table of the processing machine. Each stop element (51,71) is assigned a display unit (6,8) which is activated by activation unit (3,4). The display unit is activated by the activation unit depending on the stop element, which is to be inserted, for the display of a directly fixed or directly effecting or already accomplished positioning movement. Independent claims are included for the following: (1) processing machine (2) a method for processing of work pieces.

Description

The invention relates to a stop for a processing machine, in particular wood or plastic processing machine with a stop rail, which can be arranged on a working table of the machine and on which a workpiece to be machined can be applied, wherein on the stop rail at least two stop elements are provided.

Such stops are known on wood or plastic processing machines, wherein on a shared stop rail two or more stop elements are provided.

These stop elements can be movably connected to one another either at fixed intervals, but they can also be moved independently of one another. The stop elements can be moved either completely or partially controlled by hand or by an automatic positioning in a desired position. In a manual or automatic positioning, the operator or the user of the machine can only recognize on the controller which stop element is to be moved to which particular position and whether this has already been moved or if it still has to be moved to this position automatic positioning, of course, much more, since the operator can not clearly identify this. This is done according to the prior art either in the control of the processing machine or in a corresponding graph in the controller. There is indicated or must be read, which measure is to be set to which stop element. Now the operator must find out from the controller, which stop element is provided for positioning and positioned or, in manual adjustment, which positioning he must adjust. For the user of such a machine tool, it would be beneficial if he could immediately recognize the stop element itself or on the stop rail, which stop element is to be positioned or adjusted or to which stop element the workpiece to be machined is then to be applied to avoid incorrect operation.

Solutions are known from the prior art, suggesting the measuring systems, which are provided on a stop rail and either indicate the respective selected distance in a display or communicate via appropriate measuring devices the selected distance of a controller. The from the state The measurement and display units known in the art travel with the stop in each case and have as a display unit, for example, a display which is located on the stop itself. Which stop element has just been adjusted in each case and which is active for processing, the operator from this solution is difficult to recognize, since they are provided for the selection of the measure and the setting of the dimensions, if necessary. In addition, very complicated cabling is necessary for such a solution to be able to realize, for example, the power supply and the forwarding of the signals from the stop for controlling the machine tool and vice versa.

Also known from the prior art is a positioning device for plate-shaped or bar-shaped workpieces of different widths successively running on an approximately horizontal conveyor, wherein all workpieces are aligned with one another by horizontal displacement transversely to the conveying direction with one of their longitudinal edges lying in the conveying direction. The previously described disadvantages of the prior art exist analogously in this solution.

Another solution of the prior art proposes a machining center for flat, plate-shaped workpieces. For machining in the machining center, the plates are clamped in a working plane, wherein the working plane can be provided horizontally or vertically. In order to position these plate-shaped workpieces and clamp in the working plane, stop and tightening means are provided, which in the working plane in the X- and Y-axis arbitrarily displaceable, fixable in the functional positions by adhesive or clamping means stop blocks and in the working plane in the X and Y axis arbitrarily displaceable, in the functional positions by adhesive or clamping means fixable workpiece clamping devices exist. After the solution, as proposed in the prior art, the stop blocks or the workpiece clamping devices are achieved by means of an additional control program and a displacement device which can be actuated thereby.

Based on this prior art, it is an object of the invention to provide a stop for a processing machine, in particular a wood or plastic processing machine, which does not require a complicated electrical system and displays the desired stop element in a simple manner.

The invention is based on the above-described prior art and proposes to solve the problem a stop for a processing machine, in particular wood or plastic processing machine with a stop rail, which can be arranged on a working table of the machine and on which a workpiece to be machined can be applied is, wherein on the stop rail at least two stop elements are provided, wherein the stop is characterized in that each stop element assigned at least one display unit and the display unit can be activated by at least one activation unit. By this measure, it is now possible to indicate to the operator of the processing machine, which stop element must be moved or has already been automatically brought by the control and positioning in the desired position.

The display unit also indicates if the positioning has not yet been done. It does not matter if this positioning is automatic or manual. Rather, only one activation unit is necessary, which activates the display unit when it is either positioned or ready for positioning. The display unit can also be activated only if the positioning has already taken place. Here the invention is not limited to one limited to these possibilities. Rather, it is possible according to the invention to provide all three variants on a stop for a processing machine. The activation unit can be arranged so that you do not need any cable connection for control or only a single line guide then has to be led to the activation unit.

The display unit can be activated via other means to be described in more detail below, without the need for a wire-guided connection.

Compared to the known from the prior art positioning device, the invention has the advantage that the absolutely necessary according to the prior art CNC control is not essential. It should also be noted that the solution according to the prior art does not indicate which stop of the processing machine is already set or has just been set. Rather, according to the solution of the prior art, it is merely provided, based on the respective width of the successive workpieces, to make the selection of the positioning stop to be assigned to the respective workpiece and, in connection therewith, the positioning of the guide carriage as part of a program preselection. During the passage of the workpiece, the positioning stop associated with this workpiece is then brought into position according to the prior art. All other positioning stops remain inoperative. The solution according to the prior art can be used in particular only in the edge region of edge processing machines, so-called Doppelendprofilern, with one-sided processing facilities without working width adjustment in the processing of longitudinal edges. It is also, as already mentioned, the operator does not indicate which stop has already been set to the desired position and where he may have to create the workpiece. These However, the invention solves problems in an excellent manner.

In contrast to the known from the prior art solution of the machining center for flat, plate-shaped workpieces, the high complexity of this solution and the need for an additional control program is avoided. The display units can also be easily controlled via the control normally present on each processing machine. It is also not necessary to check which workpiece clamping device has just been adjusted from the waiting positions or previously taken positions by the actuators in the new, desired position. The invention always indicates which stop is currently activated or has already been adjusted. The disadvantages, in particular with regard to the complexity of the solution and in particular a high degree of programming effort for the realization of the individual positioning tasks is completely avoided by the invention.

An advantageous development of the invention therefore provides that the display unit can be activated by the activation unit as a function of the stop element to be used in each case to display a positioning movement which is just defined, is taking place or has already been carried out. This can, as already described, be accomplished by simple technical measures by selecting a particular order and then adjusts or pretends.

According to a preferred variant of the invention, it is provided that a laser is provided as the activation unit. Such a laser only needs a power supply and is easily selectable from the controller, so that then laser beams are emitted when the respective selected stop element is positioned or should be positioned. The laser beam is on the display unit aligned, that in the case of the emission of a laser beam, the display unit then clearly and clearly recognize which stop element has been selected. For example, the laser may be provided on the stop rail at the end which is moved relatively little so that only a relatively short cable connection is necessary, for example. Other transmission possibilities of signals and / or energy to the laser are also included in the invention.

Another variant of the solution according to the invention proposes as activation unit a radio transmitter which is able to communicate with at least one receiver which is provided on one of the display units and / or on the stop rail. For such a case, for example, one then comes completely out without a line-powered power supply, for example when using batteries or accumulators as an energy supplier.

Of course, a cable-guided power supply for the display unit of the invention comprises, wherein the activation unit is then indicated by one or more switches which connect or interrupt a power supply to the one or more display units. In this case, such a solution is limited to a small amount of cabling and only requires a cable with a small diameter.

A development of the invention proposes that the display unit is provided on or in the stop plane of the stop element. However, according to a development of the variants described above, the display unit is preferably provided directly on the stop element, in order to completely exclude any confusion.

A stop, as described above, is characterized accordingly a variant of the invention in that at least one activation unit is provided on the stop rail. In the case of a laser so the laser emitter is positioned directly on the stop rail, so that a laser beam emerging from it, can be directed so that it meets the display unit on a short path, for example along the longitudinal extent of the stop rail. Thus, an unnecessarily long path for the laser beam is avoided and achieved that is not interrupted by impurities or by workpieces or workpiece residues of the laser beam and thereby the display unit could not be activated. By positioning on the stop rail this possibility is at least largely avoided.

The invention also proposes that two or more activation units, spaced from each other, are provided on the stop rail. It will be necessary to provide as many activation units (transmitter) on the stop rail, as display units are provided on the stop itself, or according to the number of stop elements, which are located on the stop. This ensures that each display unit can be controlled independently by its own activation unit. This does not exclude that an activation unit is used for different display units.

The invention proposes, in an advantageous development of the invention, that the activation units emit beams and / or signals which can be converted by the display units into optical signals. Of course you can also provide acoustic signals in addition to optical signals. However, this is somewhat more complicated to implement, but also encompassed by the invention. In the simplest form, however, the display units are designed as optically effective display units, as these are the least expensive and the least susceptible to failure.

A further aspect of the invention is characterized in that the rays emitted, for example, by the laser as the activation unit run parallel or slightly angled to the longitudinal axis of the stop rail. In the parallel variant, the display units are also provided offset in parallel on the stop rail or on the stop elements, so that the laser beams impinge there directly. In the event that only one laser is provided as the activation unit, a variant is proposed in which the display units are then provided at different altitudes on or on the stop rail or on the stop elements, such that the laser beam is able to activate both display units. The display units would then have to be designed accordingly so that they react to different pulsations, for example, or that they can be activated with different radiation intensities.

A variant of the invention proposes that a termination part is provided on the stop rail that terminates at least one end of the stop rail. This termination part is preferably arranged on the side of the stop rail, which is moved the least. For this reason, one can then provide the activation unit or the activation units on the termination part. If, for example, the termination part slightly exceeds the height level of the stop rail, a favorable solution for the control of the display units can be achieved by the beams or signals emitted by the activation units. These beams would then run, for example, above the plane of the stop rail. Of course, it is also possible to let the rays run inside the rail. For this purpose, however, then the display units with corresponding, corresponding thereto arranged receiving surfaces, receivers or be provided.

The invention also proposes that a movable on or on the stop rail stop carriage is provided which carries the stop elements. This makes it possible to move two or more stop elements simultaneously with a carriage, which greatly simplifies the setting of certain dimensions. The stop elements are arranged according to a variant of the invention while firmly on the stop carriage. However, another variant also suggests that at least one of the stop elements is arranged relative to each other movable on the stop carriage. This makes the entire adjustment or setting even more universal.

As already known from the prior art, the invention also proposes that the stop rail and / or the stop elements can be adjusted by means of manually operated or automatic positioning devices. Thus, the solution according to the invention can be retrofitted to all machines that carry a stop, or to appropriate attacks. The display of each activated stop elements succeeds both manually as well as automatically adjustable attacks.

In a further embodiment of the invention, the stop carriage has on the side facing the activation unit at least one opening for the passage of the beams which are emitted by the activation unit in the event of activation. It is of course included in the invention, that as many openings are present as activation units and display elements are provided on the stop rail.

The invention is also characterized in that at least one of the display units is provided with a mirror surface, at which the beams are deflected onto the visible surface of the display unit. This variant is particularly favorable in the case of the display unit which can be activated by a laser, since in this case the laser beam only has to be redirected visually to the surface of the display unit and is scattered there, for example, by the formation of the surface of this display unit and thus rendered more visible. In a further development of the above-described embodiments of the invention, it is further provided that a laser is provided as the activation unit and an indicator as the display unit. In this case, a glass part, Plexiglas part, transparent Plexiglas part, glass fiber element or, for example, a glass fiber bundle or the like may be used as an indicator.

Of course, it is also provided according to the invention that a wireless, preferably controllable via radio or infrared rays LED display is provided as the display unit.

The invention is also characterized in that a power supply, for example a separate power supply to or on the stop rail, is provided for the display unit. The power supply can be specified by a cable or wirelessly by battery or accumulator.

In a simple variant of the invention it is also proposed that the display unit used is an electric incandescent lamp or a soffit, for example, which is supplied by the power supply. This bulb or the soffit is then connected via switches to the power supply or disconnected from it.

The invention also proposes a method for machining workpieces, in which a workpiece on the processing table of a processing machine, in particular a wood or Plastic processing machine placed on a stop provided there, in particular a stop according to one of the previously described embodiments of the invention, is applied, which is characterized in that a display unit on the stop element indicates which stop element is positioned on the stop for processing or is and the workpiece for machining is then applied to this stop member for machining. The advantages according to the invention, as described above with reference to the device claims, occur in the same way by the method according to the invention.

A further development of the method is therefore characterized by the fact that the display unit is activated when the positioning of the stop element is just done.

Another variant is characterized in that the display unit is activated when the positioning of the stop element has already taken place. This will then give the operator the hint to which stop element he has to create the workpiece.

In a further variant, the invention proposes that the display unit is activated before the start of the positioning movement.

The invention will be further described by means of embodiments.

Fig. 1

eine Draufsicht auf eine Ausführungsform eines Anschlags nach der Erfindung,

Fig. 2

eine Seitenansicht der Fig. 1
und

Fig. 3

Detail einer Ausführungsform für eine Anzeigeeinheit nach der Erfindung

Show it:

Fig. 1

a top view of an embodiment of a stopper according to the invention,

Fig. 2

a side view of Fig. 1st
and

Fig. 3

Detail of an embodiment for a display unit according to the invention

Fig. 1 shows a plan view of a stopper 1 in an embodiment according to the invention. At the stop 1, a final part 2 is arranged at its left end. On this termination part 2 are the activation units 3 and 4. These are, as all representations in Fig. 1, only indicated schematically, which is sufficient for understanding the invention. Of the activation units 3 and 4, beams 31 and 41 are emitted. These jets are arranged parallel to the longitudinal extension of the stop rail 1 and parallel to each other.

Of course, the activation units 3, 4 can also be arranged directly on the stop 1. The advantage of the arrangement of the activation units 3, 4 on a closure part 2 is shown in FIG. 2. There it is clear that the activation units 3, 4 are arranged above the upper end of the stop rail 1, so that the beams 31, 41 can also move above this plane. An embodiment, not shown, also suggests that the activation units are arranged within the stop rail 1 and the beams then also extend within this rail in the activation case. For this purpose, it is merely necessary to provide that the display units 6, 8 to be described later also have to extend into the plane of the beams 31, 41 so that they can also receive the beams, using the example of a laser beam.

On a stop carriage 9, which is arranged longitudinally movably in the X direction on the stop 1, a first stop plane 5 and a second stop plane 7 are each schematically indicated by means of dot-dash lines. On the stop carriage 9, or at this, a first stop element 51 and a second stop element 71 are arranged. These stop elements 51 and 71 are movable with the stop carriage 9 along in the direction of the longitudinal axis of the stop rail. The mobility of the stop carriage 9 is schematically indicated by the double arrow X. The stop elements 51 and 72 are provided either fixed or movable on the stop carriage 9. They are of course also according to a variant of the invention towards each other or away from each other movably arranged on the stop carriage 9. This allows the distance between these two stop elements (51, 71) and the stop levels 5 and 7 to each other change.

On the activation units 3 and 4 facing side of the stop carriage 9 openings 91 and 92 are provided, which serve for the passage of the emitted from the activation units 3, 4 beams 31 and 41. The beams emitted by the activation units 3 and 4 impinge on display units 6 and 8 respectively arranged in the beam path, which are preferably arranged directly on the stop elements 51 and 71. If a signal or a beam is now emitted by the activation unit 3, 4, this hits the display unit 6, 8, whereby it is activated. As first and second display unit 6, 8, for example, indicators of simple Plexiglas can be used, which have a deflection surface 10 (see FIG. 3), by which the respective incident on the indicator beams 31, 41 are deflected in such a way that the beams to the Surface of the indicators and exit there, whereby these are recognized as flashing.

The big advantage over a direct control of the display units 6, 8 or indicators is that according to the invention, the electrical connections are provided only on the closure part 2 or directly to the stop rail 1, which are moved very little relative to the machine, whereby the Connection can be achieved without expensive and space-consuming cable management, for example cable tow.

Furthermore, a great advantage of the stop according to the invention is the fact that a direct communication of the activation unit 3, 4 with the control of the processing machine is possible by the connection of the activation unit to the closure part 2 or to the stop rail 1. The operator is then displayed via the controller and the activation unit 3, 4 directly on the machine, which stop element is currently positioned, or was positioned last. Of course, the controller can also be programmed so that a just defined positioning movement for the stop element 51, 71 is displayed. This makes it easier for the operator to recognize which stop element is currently being positioned or should be positioned.

Compared to the prior art, the solution according to the invention is associated with considerable savings in that the display unit manages without direct cable connection or with greatly reduced cabling and directly displayed, which stop element 51, 71 is selected. Of course, it is also possible according to the invention, the display units 6, 8 as LED displays or similar form and wirelessly, for example via radio or infrared, to control. The receivers are preferably by an associated with the machine control activation unit, eg. B. a transmitter. In the illustrated variant With two fixed stop planes 6, 8, or stop elements 61, 71, a single receiver, accommodated in the stop carriage 9, could supply both display units 6, 8 designed as LED.

The preferred variant with laser beams causes significantly lower production costs and can be operated without batteries. In the wireless control via radio or infrared, the advantage is that no laser beams can be accidentally interrupted and in the more comfortable, completely wireless handling of the stop 1 itself. Of course, both the display of laser beams and the aforementioned wireless controls in an identical form on attacks with more than two stop elements 51, 71 or more than two stop levels 5, 7 applicable.

FIG. 2 shows a side view of FIG. 1. The reference numerals, as presented in FIG. 1, are reused analogously in FIG. The side of the stop rail 1, the final part 2 is provided on which the here not visible transmitter 3, 4 are arranged. Using the example of a laser transmitter which emits a laser beam 31, 41, it can be seen how the laser beams 31, 41 can enter the stop carriages 9 through the openings 91, 92 in order to reach the respective display unit 6, 8. At the moment when a laser beam impinges on one of the display units 6, 8, this is activated, for example by the laser beams are deflected and on the surface as visible light, preferably scattered, re-emerge.

The stop carriage 9 is in turn movable back and forth in the X direction. The stop levels 5 and 7 are also shown again with a dashed line.

3 shows a detailed view of a variant embodiment a display unit 6, 8 according to the invention. Schematically indicated that the rays 31, 41 enter at the bottom of the display unit 6, 8 and are deflected at an approximately 45 ° angled mirror surface 10 such that they emerge scattered on the surface of the display unit 6, 8. The mirror surface 10 is advantageously mirrored. The surface of the display units is frosted, for example, for better dispersion. Of course, as a display unit 6, 8, a glass fiber bundle or other suitable devices are provided which are suitable, for example, to redirect a laser beam accordingly and make visible on the surface of the stop carriage 9. With regard to a display unit, which is embodied, for example, as an LED display and which is controlled wirelessly, for example by radio or infrared, it should be noted that it is sufficient here if a single receiver is provided on the stop carriage 9, the different frequencies of signals receives and then assigns these different frequencies of the respective display unit 6, 8.

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 as a waiver of achievement an 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 which have been disclosed only in the description, or also individual features of claims comprising a plurality of features, may at any time be included in the first claim for distinction from the prior art, even if such features are associated with others Characteristics were mentioned or achieve particularly favorable results in connection with other features.

Claims (15)

Stop for a processing machine, in particular wood or plastic processing machine, with a stop rail, which can be arranged on a working table of the machine and on which a workpiece to be machined can be applied, wherein on the stop rail at least two stop elements are provided, characterized in that each Stop element (51, 71) associated with at least one display unit (6, 8) and the display unit (6, 8) by at least one activation unit (2, 3) is activated. Stop according to Claim 1, characterized in that the display unit (6, 8) can be activated by the activation unit (2, 3) as a function of the respective stop element (51, 71) to be used to indicate a positioning movement which has just been determined, is already taking place or has already been carried out. Stop according to one or both of the preceding claims, characterized in that a laser is provided as the activation unit (2, 3) and / or as a activation unit (2, 3) a radio transmitter and at least one of the display units (6, 8) and / or a receiver is provided on the stop rail (1) and / or the activation unit (2, 3) is indicated by switches which connect or interrupt a power supply to the display unit or units (6, 8). Stop according to one or more of the preceding claims, characterized in that the display unit (6, 8) is provided on or in the stop plane (5, 7) of the stop element (51, 71) and / or the display unit (6, 8) is provided directly on the stop element (51, 71). Stop according to one or more of the preceding claims, characterized in that at least one activation unit (3, 4) on the stop rail (1) is provided or two activation units (3, 4) spaced from each other on the stop rail (1) are provided. Stop according to one or more of the preceding claims, characterized in that the activation units (3, 4) emit beams and / or signals (31, 41) which are convertible by the display units (6, 8) into optical signals and / or the from the laser as the activation unit (3, 4) emitted beams (31, 41) parallel or at an angle to the longitudinal axis of the stop rail (1). Stop according to one or more of the preceding claims, characterized in that on the stop rail (1) a closure part (2) is provided, that terminates at least one end of the stop rail (1) and / or the activation units (3, 4) are arranged on the end part (2). Stop according to one or more of the preceding claims, characterized in that a stop slide (9) which is movable on or on the stop rail (1) and carries the stop elements (51, 71) and / or the stop elements (51, 71) is provided. are fixedly arranged on the stop carriage (9) and / or at least one of the stop elements (51, 71) is arranged relative to each other movable on the stop carriage (9). Stop according to one or more of the preceding claims, characterized in that the stop rail (1) and / or the stop elements (51, 52) are adjustable by means of manually operable or automatic positioning devices and / or in the stop carriage (9) on the activation unit ( 3, 4) facing side at least one opening (91, 92) for the passage of the beams (31, 41) is provided. Stop according to one or more of the preceding claims, characterized in that and / or in the stop carriage (9) on the side facing the activation unit (3, 4) so many openings (91, 92) for the passage of the beams (31, 41) are provided, such as display units (6, 8) and / or activation units (3, 4) are provided and / or on at least one of the display units (6, 8) a mirror surface (10) is provided at which the beams (31, 41 ) are deflected to the visible surface of the display unit (6, 8). Stop according to one or more of the preceding Claims, characterized in that a laser is provided as the activation unit (3, 4) and an indicator as the display unit (6, 8) and / or as an indicator a glass part, Plexiglasteil, transparent plastic part, glass element, for example a glass fiber bundle, or are provided. Stop according to one or more of the preceding claims, characterized in that as a display unit (6, 8) a wireless, preferably controllable via radio or infrared rays LED display is provided and / or for the display unit (6, 8) a power supply, for example a separate power supply is provided on or on the stop rail (1) and / or the power supply is indicated by a cable or wirelessly by battery or accumulator and / or a display unit (6, 8) is an electric bulb, which is powered by the power supply , Processing machine, in particular wood or plastic processing machine, with a stop according to one or more of the preceding claims. Method for processing workpieces, in which a workpiece is placed on the processing table of a processing machine, in particular a wood or plastic processing machine, to a stop provided there, in particular a stop according to one or more of the preceding claims 1 to 12, characterized in that a display unit indicates on the stopper member which stopper member on the stopper for the machining is used and the workpiece for machining is applied to this stopper member. A method according to claim 14, characterized in that the display unit is activated when the positioning of the stop element is just done or the display unit is activated when the positioning of the stop element has already been done or the display unit is activated before the start of the positioning movement.

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