EP3513931A1 - Processing device - Google Patents

Abstract

The invention relates to a processing device for cutting and / or crushing a portion of a coating material, in particular a drawing chip, which is formed for example by a relative movement between a scraper blade and a coating material applied to a workpiece.

Description

Technical area

The invention relates to a processing device for cutting and / or crushing a portion of a coating material, in particular a drawing chip, which is formed for example by a relative movement between a scraper blade and a coating material applied to a workpiece.

Such a processing device may be provided on a processing machine for applying coating material to a workpiece, which is used, for example, for processing, in particular plate-shaped, workpieces in the field of furniture and component industry.

State of the art

In processing machines for reworking provided with a coating material workpieces previously applied to a workpiece coating material (narrow-surface coating, edge material) is post-processed so that it is flush with the broad surfaces of the workpiece.

In this case, in a first post-processing step, the first projecting beyond the wide surface Coating material milled flush almost to the workpiece surface of the wide surface. In a second post-processing step, the milled surface is smoothed by means of a scraper, whereby a chip separated from the coating material is formed. This chip is also referred to as Ziehspan.

The chip length usually corresponds to the length of the coating material. If, for example, a workpiece with a length of 2 meters, on whose narrow side a corresponding coating material has been applied, a 2 meter long chip is separated from the coating material. This can lead to a disturbance on the processing machine, in particular if the separated chip passes into specific units of the processing machine. To prevent this, a device is used with which the Ziehspan can be crushed.

The DE 10 2004 019 316 A1 relates to an apparatus and a method for edge processing. The processing device comprises a processing device for separating an edge section in the case of plate-shaped or strip-shaped workpieces, whereby at least one chip is formed. The device is characterized in that it has a chip receiving section and a chip forming device, in which the at least one chip is geometrically variable. In this case, the chip-shaping device is, in particular, a shearing edge and a cutting tool, in particular a milling tool.

Despite the advantages achieved with this processing device, extensive knowledge is required in practice to set the cutting device in such a way that a secure cutting of chips of different geometries is ensured. This process requires a high degree, especially when starting up the processing device experience and skill of the operator. Consequently, this also represents a source of error that can lead to chips that may not be shredded as desired.

Subject of the invention

The invention aims to provide a device with which the separation of different chips can be ensured, and in particular also thin and / or tough chips can be safely separated. Furthermore, a high level of user-friendliness should be achieved by a simple setting.

The subject-matter of claim 1 provides a corresponding device. Further preferred embodiments are explained in the dependent claims and the following description.

A coating material according to the invention means in particular an element which is applied to one side of a workpiece to be coated. For example, it is a narrow-surface coating, which is also referred to as edge material. The coating material may be made of a, in particular thermoplastic, plastic material, veneer, metal, or the like.

The processing device may comprise a sensing device and a scraper blade disposed adjacent to the sensing device. The processing device and a workpiece can be guided in this way relative to each other, so that by a engagement of the scraper a chip / Ziehspan of the coating material, in particular Schmalflächenbeschichtungsmaterial removed. For example, the processing device can be moved and the workpiece can be held. In this case, the Machining device mounted, for example, on a processing unit, which is moved along a workpiece or around a workpiece. Alternatively, the workpiece is moved and the processing device is held.

The processing device according to the invention is set up to separate and / or comminute a portion of a coating material, in particular a drawing chip. The processing device comprises a cutting tool with a movable cutting edge. For example, the cutting edge can rotate about an axis of rotation. It is further preferred that the cutting tool has a plurality of cutting edges. In particular, the cutting tool is designed as a milling tool.

Furthermore, the processing device comprises an insert with a cutting edge. The cutting edge is arranged and / or arranged to cooperate for cutting and / or crushing a portion of a coating material with the cutting edge of the cutting tool. It is envisaged that the position and / or orientation of the cutting edge is changeable in at least two directions.

The processing device according to the invention has the advantage that the cutting gap, which is formed in operation between the cutting edge and the cutting edge, can be set in parallel. Thus, this can be adjusted to the entire length or width to a certain extent. Thus, it is possible to cut through even thin or tough chips safely.

According to a preferred embodiment, it is provided that the cutting edge of the cutting tool is rotatable about an axis. The blade is thus movable and can cooperate with the cutting plate to separate and / or shred a portion of the coating material. It is preferable that a first direction is a translational direction and a second direction is a rotational direction. Thus, the cutting edge can be approximated to the effective range of the cutting edge and precisely aligned in a further or parallel step. Alignment in the rotational direction may be accomplished prior to operation of the processing device to align the cutting edge for operation to provide a parallel cutting gap.

The position and / or orientation of the cutting edge may be fixable for operation. Thus, the position and / or orientation of the cutting edge can be adjusted before starting the operation. Alternatively, it is possible to variably design the position and / or orientation during operation so that the cutting gap can be adjusted during operation.

According to one embodiment, it is provided that the cutting plate is connected to a sliding carriage. For example, the carriage can be moved in a guide in a translational direction.

For example, the cutting plate may be attached to a pivotable carrier plate, wherein it is preferred that the carrier plate by an adjusting device, such as a screw, can be fixed. In this way, a simple change in the position and / or orientation of the cutting edge is made possible, thus supporting the operator in setting the processing device.

It is preferred that the carrier plate is pivotable about a hinge, wherein the hinge is preferably a, in particular metallic, hinge. In this case, the hinge may be formed as an area with reduced material thickness. The carrier plate and the carriage could be formed integrally. Thus, a reliable and inexpensive construction can be provided.

In a further embodiment, it is preferred that the cutting plate is aligned in operation such that the cutting edge touches the cutting plate. In this embodiment, the cutting gap is 0mm, so that a particularly secure cutting of thin drawing chips is guaranteed.

The cutting plate can be made as a resilient element, so that the cutting plate undergoes a deflection in contact with the cutting edge. The cutting plate can interact with the cutting edge without causing damage to the cutting tip.

The cutting plate may have two projections, between which extends the cutting edge of the cutting plate. The projections can serve as an insertion aid to safely pick up a drawing chip. The cutting edge initially hits the projections tangentially and presses the insert away accordingly. Furthermore, it can be provided that the cutting edge initially touches the projections of the cutting plate. Thus, wear of the cutting edge is avoided.

Furthermore, according to a further embodiment, it is preferred that the processing device has a feed device for feeding a lubricant into the region of the cutting plate. The feeder can be designed, for example, like a tube and eject a sprayed lubricant in the direction of the cutting plate. Thus, when the blade and the insert come into contact during operation, the friction and wear between them can be reduced.

The invention also relates to a processing machine. The processing machine is with a finishing tool, in particular milling tool, for flush editing a Coating material and a processing device equipped according to one of the preceding aspects.

Furthermore, the invention relates to a method for operating a processing device which is provided for cutting through and / or comminuting a portion of a coating material, for example a processing device according to one of the preceding aspects or a previously mentioned processing machine. The method comprises the steps of: moving a cutting edge having a cutting edge in a first direction to a cutting edge of a cutting tool, aligning the cutting edge in a second direction.

The alignment of the cutting edge can be done before or during the operation of the processing device. For example, an alignment can be done by rotating the cutting edge about an axis. Alternatively or additionally, it is possible that the cutting edge touches the cutting plate in operation, wherein it is preferred that the cutting plate is made as a resilient element.

Brief description of the drawings

Fig. 1

is a perspective view of a first embodiment of the invention.

Fig. 2

is a perspective view of a second embodiment of the invention.

Fig. 3

shows a detailed view Fig. 2 ,

Detailed Description of the Preferred Embodiment

Hereinafter, preferred embodiments of the invention will be explained in detail with reference to the accompanying figures to which Invention to be described by way of illustrative examples. Other modifications of certain individual features described in this context may be combined with other features of the described embodiments to form further embodiments of the invention.

In FIG. 1 a processing apparatus 10 is shown, with which, as described below, first of all a coating material B applied to a workpiece W is smoothed and the resulting drawing chip is comminuted. This in FIG. 1 shown workpiece W is held by means of a clamping device. The processing apparatus 10 is mounted on a movable unit or carriage (not shown) that can be moved, for example, in a plurality of spatial directions.

The processing device 10 may be a section or part of a processing machine with which the workpiece W is provided with the coating material B and subsequently post-processed in the region of the processing device 10. The workpiece W can be held at least between the application of the coating material B and the post-processing in the region of the processing device 10.

The workpiece W may, for example, be a chipboard or lightweight board provided with a coating on the broad sides. In order to close the comparatively open-pore narrow side, said coating material B is applied to the narrow side of the workpiece W.

The processing device 10 comprises a base 11 to which a feeler 12 (sensing device) is attached. The feeler 12 comprises a touch surface 12 a, which is a workpiece W in a relative movement between the workpiece W and the Processing device 10 performs such that a scraper blade 13 can remove a portion of the coating material B.

The scraper blade 13 of the processing apparatus 10 is arranged such that the scraper blade 13 can process a corner area of the coating material B. The scraper blade 13 is for this purpose attached to the base 11 and adjacent to the feeler 12. Thus, when guiding a workpiece W along the touch surface 12a of the contact shoe 12 in the engagement region 14 of the scraper blade 13, the thread-like drawing chip Z is formed.

The processing apparatus 10 further comprises a cutting plate 16 arranged stationary during the machining operation. The cutting plate 16 has a cutting edge 17 which extends in the vertical direction or in the substantially vertical direction in the present embodiment.

Adjacent to the cutting plate 16, a rotating cutting tool 18 is provided, wherein the rotating cutting tool 18 comprises a plurality of circumferentially arranged cutting edges 19. In the present embodiment, three blades 19 are provided on the cutting tool 18, wherein the number of blades 19 is not limited thereto. The cutting edges 19 are preferably replaceable provided on the cutting tool 18.

In the in Fig. 1 In the case of application shown, the cutting tool 18 rotates in the direction of movement of the workpiece W counter to a substantially vertically oriented axis of rotation (in the illustration of FIG Fig. 1 counterclockwise). Due to the rotational movement of the rotating cutting tool 18, the cutting edges 19 are temporarily guided in the vicinity of the cutting plate 16 in order by cooperation of the cutting plate 16 and the respective cutting edge 19 of the rotating cutting tool 18 in the cutting gap between Cutting edge 17 and cutting edge 19 present cutting chip Z to cut.

The shortest distance between the cutting plate 16 and the respective cutting edge 19 defines the cutting gap. Since the cutting edges 19 are guided by their arrangement on the cutting tool 18 at periodic intervals in the region of the cutting tool 18, the drawing chip Z is crushed.

The cutting plate 16 is mounted on a support plate 15. The carrier plate 15 is located on a carriage 20, wherein the carriage 20 can be moved in a translational direction. By moving the carriage 20 in the direction of the cutting tool 18, the cutting plate 16 can be moved relative to the cutting tool 18 and thus the cutting gap between the cutting edge 17 and the cutting edge 19 can be varied / adjusted.

The carrier plate 15 is connected to the carriage 20 by means of a metallic hinge 21. The hinge 21 is part of the support plate 15 and constitutes a region with a relatively small material thickness. By a force application to the support plate 15, this can be rotated relative to the carriage 20.

On the support plate 15, a tension and compression screw 22 is further provided as an adjusting device, so that in the released state of the screw 22, a pivotal movement of the support plate 15 about an axis 15a of the hinge 21 can be performed. In this way, the cutting edge 17 can be aligned by a rotational movement in a rotational direction. Since the hinge 21 is formed integrally with the support plate 15 and the carriage 20 in the embodiment, a relatively small, but extremely precise pivotal movement of the support plate 15 can be performed.

Thus, the parallelism of the cutting edge 17 of the cutting plate 16 relative to the cutting edge 19 of the rotating cutting tool 18 can be adjusted. By adjusting the parallelism, a uniform distance (for example, a cutting gap of 0.02 mm) can be defined, so that it is possible to cut through even thin and / or tough drawing chips safely.

In FIG. 2 a second embodiment of the invention is shown. The same or similar components of the processing apparatus 10 'according to the second embodiment are denoted by the same reference numerals as in the first embodiment. With regard to the detailed description, reference is made to the above statements.

The processing apparatus 10 'of the second embodiment of the invention differs from that in FIG FIG. 1 shown processing apparatus 10 of the first embodiment in that on a translationally movable carriage 20 'designed as a resilient element cutting plate 16' is mounted.

The reversibly bendable cutting plate 16 'comprises a cutting edge 17', which is provided in a U-shaped recess of the cutting plate 16 '. Due to the U-shaped configuration, the cutting plate 16 'comprises two opposing projections 16a, which serve as an insertion aid for the Z drawing chip. Between the projections 16a extends a cutting edge 17 'of the cutting plate 16'.

In the vertical direction below the spring-loaded cutting plate 16 'is a supply means 30 for a lubricant, in the present embodiment, compressed air is supplied with a mixed lubricant in the direction of the spring-loaded cutting plate 16'. The Feeder 30 is tube-like and its opening in the direction of the cutting plate 16 'aligned.

The cutting plate 16 'is made of a spring steel and formed plate-shaped. The cutting edge 17 'of the cutting plate 16' is arranged substantially tangentially to the cutting edge 19. During a rotational movement of the cutting tool 18, the cutting edge 19 initially strikes tangentially on the projections 16a and thereby presses the cutting plate 16 'away accordingly. The cutting plate 16 'moves by contact with the blade 19 resiliently in the spring direction F.

Here, the punctiform or linear contact between cutting edge 17 'and cutting plate 16' remains. By an interaction of the cutting edge 17 'and the cutting edge 19 of the cutting tool 18, the drawing chip Z is cut.

In this case, in the course of the resilient movement of the cutting plate 16 ', the cutting edge 17' set parallel to the cutting edge 19 of the cutting tool 18, so that the parallelism is achieved by the shrinkage of the cutting plate 16 '.

The cutting gap between the cutting edge 17 'and the cutting edge 19 in the second embodiment is substantially 0 mm.

Claims (15)

Processing device (10, 10 ') for cutting through and / or comminuting a portion of a coating material, in particular a drawing chip, comprising: a cutting tool (18) having a movable cutting edge (19), a cutting plate (16, 16 ') having a cutting edge (17, 17'), the cutting edge (17, 17 ') being arranged to sever and / or comminute a portion of a coating material with the cutting edge (19) of the cutting tool (18 ) to cooperate wherein the position and / or orientation of the cutting edge (17, 17 ') is variable in at least two directions. Machining device (10, 10 ') according to claim 1, characterized in that a first direction is a translational direction and a second direction is a rotational direction. Machining device (10, 10 ') according to one of the preceding claims, characterized in that the position and / or orientation of the cutting edge (17, 17') can be fixed for operation or at least partially variable during operation. Machining device (10, 10 ') according to one of the preceding claims, characterized in that the cutting plate (16, 16') is connected to a displaceable carriage (20, 20 '). Machining device (10, 10 ') according to one of the preceding claims, characterized in that the cutting edge (19) is rotatable about an axis, in particular vertically aligned. Machining device (10) according to one of the preceding claims, characterized in that the cutting plate (16) is attached to a pivotable carrier plate (15), wherein it is preferred that the carrier plate (15) by an adjusting device (22) can be fixed. Machining device (10 ') according to claim 6, characterized in that the carrier plate (15) about a hinge (21) is pivotable, wherein the hinge is preferably a, in particular metallic, hinge (21). Machining device (10 ') according to any one of claims 1-5, characterized in that the cutting plate (16') is aligned in operation such that the cutting edge (19) contacts the cutting plate (16 '). Machining device (10 ') according to claim 8, characterized in that the cutting plate (16') is made as a resilient element. Machining device (10 ') according to one of the preceding claims, characterized in that the cutting plate (16') has a projection, in particular two projections (16a), between which the cutting edge (17 ') of the cutting plate (16') extends. Machining device (10 ') according to one of claims 8-10, characterized in that the processing device (10') has a feed device (30) for supplying a lubricant in the region of the cutting plate (16 '). Processing machine with a finishing tool, in particular milling tool, for flush machining a coating material and a processing device (10, 10 ') according to one of the preceding claims. Method for operating a processing device, which is provided for cutting and / or comminuting a portion of a coating material, preferably a processing device according to one of claims 1-11 or a processing machine according to claim 12, comprising the steps: Moving a cutting edge (16, 16 ') having a cutting edge (17, 17') in a first direction to a cutting edge (19) of a cutting tool (18), Aligning the cutting edge (17, 17 ') in a second direction. A method according to claim 13, characterized in that the first direction is a translational direction and the second direction is a rotational direction. Method according to one of claims 13-14, characterized in that the cutting plate (16) is pivotable about an axis, or
characterized in that the cutting plate (16 ') is aligned in operation so that the cutting edge (19) touches the cutting plate (16'), wherein it is preferred that the cutting plate (16 ') is made as a resilient element.

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