EP2933075B1 - Finishing tool - Google Patents

Description

Technical area

The present invention relates to a processing apparatus, which is preferably used in the furniture or component industry for post-processing of corresponding workpieces, according to the preamble of claim 1. Such a processing apparatus is known from EP 1 764 198 A1 known.

State of the art

In the field of post-processing of workpieces provided with a coating material, in particular post-processing of an edge region of a workpiece provided with an edge band on the narrow side, a residual strip (drawing chip) may remain at the profile and Flachziehklingenbearbeitung at the end of processing, after application of the coating material and the like Post-processing protrudes from the workpiece. Depending on the coating material, this drawing chip may possibly fall off the workpiece when the workpiece is subjected to certain vibrations. However, this could lead to problems with measuring instruments within the device, and is already unacceptable due to the relatively uncontrolled contamination of the machine.

Furthermore, there is a risk that the drawing chip remains on the workpiece. This can lead to problems especially during further processing and in transport systems. By way of example, reference is made to an optical workpiece recognition, which controls further processing operations, such as the introduction of holes.

In the case of a manual post-processing of the drawing chip can be removed with appropriate tools. However, such a procedure is not possible if the workpiece without further intermediate (manual) processing steps is further promoted to other processing stations.

Another document is the EP 1 764 198 A1 , which relates to a method for processing plate-shaped workpieces in the region of an abrasive covering layer of the plate-shaped workpieces. In this case, in each case one Oberlfächenabschnitt is subtracted in the region of the abrasive covering layer, wherein the peeling takes place after the generation of the at least one groove and is made such that the deducted surface portion adjacent to the at least one groove produced.

Furthermore, the DE 200 2006 006 244 U1 known.

Subject of the invention

The aim of the present invention is therefore to provide a processing apparatus which meets the increased quality requirements, and in particular overcomes the above-mentioned problems.

The subject matter of claim 1 provides for this purpose a processing device which provides a solution of the stated object. Further preferred embodiments are listed in the dependent claims.

The core idea of the present invention is to provide a cutting tool in the region of the probe element. In this case, the cutting tool in the outlet section of Tastelement be provided so as to be able to separate any remaining span.

In this case, it is provided that a cutting edge of the cutting tool, as viewed in a side view, projects beyond the contact surface of the feeler element by a relative distance. Since the discharge section is curved or inclined or terminates as a rectangular step or stepped, the cutting edge of the cutting tool is defined by the relative distance with the Ziehspan engaged.

Although it is preferred that the cutting tool is arranged in the region of the same probe element as a machining tool (drawing chip tool), it can also be provided to provide a separate probe element for each of the tools. In this case, the cutting tool is to be arranged in the outlet section of the probe element assigned to it.

Preferably, the present invention is used in the field of continuous technology, where a workpiece is moved with a conveyor. However, it is also conceivable use in the field of stationary technology, where a workpiece, for example. By means of suction or similar clamped or clamped, and a tool for machining is performed relative to the held workpiece.

The processing device according to claim 1 has the advantage that a cutting tool can remove a residual strip in a controlled manner from a workpiece. In this way, process reliability is increased and high quality requirements are met. Furthermore, a reduction of imprints / damage to workpieces is achieved in the stacking, and by a functional integration investment costs for an additional unit can be omitted.

The cutting tool is preferably a knife. Alternatively, however, cutting can also be performed with a laser.

The probe element is preferably a feeler. An alternative option is a touch roller.

In one embodiment, the processing device further comprises a processing tool. This may be a glue joint scraper blade or a profile scraper used to finish an edge portion of a workpiece. The machining tool, preferably a drawing chip tool, in this embodiment is arranged adjacent to the feeler element in such a way that machining of a workpiece is carried out prior to machining by the cutting tool. Accordingly, if the workpiece is moved, the processing tool is arranged in the conveying direction of the workpiece in front of the cutting tool.

In particular, the machining tool and the cutting tool are similar tools, preferably cutting blades. Thus, a cost-effective implementation is possible.

In one embodiment, the feeler element is movable relative to the cutting tool via an adjusting device. In this way, a relative distance of a cutting edge of the cutting tool is adjusted to the tactile surface of the probe element.

The adjusting device and the cutting tool, in particular also the aforementioned machining tool, are preferably attached to a common base support. Thus, a compact unit is formed.

The inlet section of the probe element should be curved in one embodiment as the outlet section. This ensures that a workpiece gently comes in contact with the probe element.

In a variant of the invention, the outlet section of the probe surface is curved, preferably with a smaller radius of curvature than a radius of curvature of the probe surface in a central region of the probe element. In this variant, the tactile surface is thus provided with a base curvature, and the outlet portion has a greater curvature than the Grundkcümmung. A vertical area of the base curve may be arranged in a middle area of the probe element or offset from the central area.

Alternatively, the discharge portion of the tactile surface is inclined.

An alternative variant relates to a processing apparatus in which the outlet section of the Touch surface in a right-angled paragraph or in several stages completes.

In a further embodiment, the adjusting device is a hydraulically or pneumatically actuatable adjusting device, a piezo and / or Tauchspulenaktuator, a servo motor, or a manual adjustment by means of a spindle.

In addition or as an alternative to an adjustment of the feeler element, the cutting tool and / or the machining tool can also be adjustable.

Further, the cutting tool 70-110 °, preferably perpendicular to the relative direction of movement between the probe element and the workpiece, in particular a conveying direction of the workpiece, aligned having cutting edge, which is preferably aligned horizontally. This configuration allows a chip to be optimally separated from a workpiece. The preferred vertical orientation of the cutting edge of the cutting tool is in FIGS. 1 and 2 shown. Said orientation is considered in a plan view of the processing device.

In a further embodiment, the cutting tool has three or four cutting edges, and is rotatably received on a holder. One of these cutting edges is used for machining while the other cutting edges are used as Serve replacement cutting. If there is wear on the cutting edge of the cutting tool in use, a fastening means (for example screw) for fastening the cutting tool to the holder can be released. Subsequently, the cutting tool is rotated so that an unused cutting edge can be used.

Brief description of the drawings

Fig. 1

is a perspective view of a preferred embodiment of the present invention

Fig. 2

is a schematic side view for explaining the contact area between the workpiece and the probe element

Detailed Description of the Preferred Embodiment

Hereinafter, a preferred embodiment of the present invention will be explained in detail with reference to the accompanying drawings. Other variants and modifications of individual features mentioned in this connection can each be combined with one another in order to form new embodiments.

The processing device 1 comprises a base support 2, which is partially U-shaped in cross-section and accommodates an adjusting device 3 in the region of two limbs. The adjusting device 3 extends in the vertical direction, and has a connecting piece 4, which is relative to the housing of the adjusting device 3, and thus also relative to the base support 2, movable. The adjusting device 3 may be a hydraulically or pneumatically actuated adjusting device, or alternatively a piezo and / or Tauchspulenaktuator. A servomotor is also for adjustment conceivable. Another possibility is a manual spindle adjustment.

The connecting piece 4 is fastened to a support piece 5, which support piece 5 in turn receives a feeler element (feeler shoe) 6. Thus, an actuation of the adjusting device 3 leads to a vertical movement of the probe element. 6

The feeler element 6 comprises a touch surface 6a, which serves to guide a workpiece W. The touch surface 6a has a curved inlet section 6b and a curved outlet section 6c.

The curved inlet section 6b serves to gently receive a workpiece W coming into contact with the feeler element 6 and guide it along the touch surface 6a.

The curved outlet portion 6c serves to disengage the workpiece without abrupt force from the probe element.

On the base support 2, a machining tool (processing blade) 7 is also attached. Although it is provided in the present embodiment that the machining tool 7 is immovably fixed to the base support 2, it may be provided according to a modification that the machining tool 7 can be moved in the vertical direction to the base support 2. In this case, the adjustment of the machining tool 7 is independent of the adjustment of the probe element 6, or in a further variant, the adjustment of the probe element 6 can be omitted. In any case, the scanning element 6 provides during processing for a constant feed positioning of the workpiece relative to a tool 10, which is used for machining the workpiece used.

Viewed in the direction of passage, the cutting blade 7 is located substantially in the center of the direction of extension of the feeler element 6. A drawing chip tool 10 is arranged downstream of the machining tool 7 in the direction of passage. In other words, the drawing chip tool 10 is located in the region of the outlet section 6c of the contact surface 6a of the probe element 6.

The die-cutting tool 10 has a cutting edge which is inclined to a horizontally extending passage direction. The inclined edge of the Ziehspanwerkzeuges 10 protrudes beyond the touch surface 6a (in particular the touch surface 6a in the outlet section 6c) when the processing device 1 is viewed laterally (see Fig. 2 ).

In the vertical direction above the described probe element 6 is in a mirror image manner another probe element 20 which is opposite to the probe element 6 in the vertical direction. Thus, a gap is formed between the probe element 6 and the further probe element 20, through which a workpiece W is guided.

The machining tool 7 and the drawing chip 10 are used for machining a vertically downwardly facing edge of the workpiece W, which workpiece W is provided with cover layers D and a narrow surface coating.

In Fig. 1 a drawing chip Z is shown on the workpiece W, which is removed when using the Ziehspanwerkzeugs 10 from the workpiece W. In Fig. 1 however, the drawing chip Z is shown to illustrate the machining of the drawing chip tool 10 as if machining by the drawing chip tool 10 had not taken place.

In Fig. 2 is a schematic side view shown to the relative distance x between the sensing surface 6a in Outlet portion 6c of the probe element 6 to the drawing chip 10 to illustrate. It should be noted that the dimensions shown do not correspond to the actual size ratios and are shown enlarged for illustrative purposes.

Out Fig. 2 the relative distance x between the touch surface 6a and the drawing chip 10 can be seen, which relative distance x leads to an engagement of the Ziehspan tool 10 on the moving workpiece W or on one of its cover layers D / Schmalflächenbeschichtung while the workpiece W along the conveying direction F is moved relative to the probe element 6 and the drawing chip 10.

A process flow with a machining direction 1 according to the present embodiment is as follows.

First, the workpiece W is provided with a narrow-surface coating, in particular edge band. In this case, the workpiece or the edge band is provided with an adhesive. However, it may also be pre-coated edges.

After the narrow-area coating has been applied to the narrow side of the workpiece W, the workpiece W is guided by the processing apparatus 1. The probe element 6 thereby performs machining tool 7 on the workpiece, while this moves in the conveying direction F and is processed by means of the machining tool 7.

After the discharge section 6c of the sensing surface 6a is curved, the workpiece W engages the drawing chip 10 only in its end region. In this case, the drawing-cutting tool 10 separates the drawing chip Z possibly remaining on the workpiece W, if it could not already be separated by the machining tool 7.

Claims (11)

1. Processing device (1) for workpieces (W), which preferably consist at least in sections of wood, derived timber products, composite materials or plastics, which workpieces (W) are provided with a coating material, having:

   a scanning element (6), in particular a scanning shoe or a scanning roller, having a scanning surface (6a) for supporting a workpiece (W), which scanning surface (6a) has a run-in section (6b) and a run-out section (6c),

   a movement device for moving a workpiece (W) and the scanning element (6) relative to one another so that the workpiece (W) is guided along the scanning surface (6a),

   characterised in that

   a cutting tool (10), preferably a knife, is arranged adjacent the run-out section (6c) of the scanning surface (6a), wherein a cutting edge of the cutting tool (10), looked at in a side view, projects beyond the scanning surface (6a) in the run-out section (6c) of the scanning element (6) by a relative distance (x),

   wherein the run-out section is curved or inclined or concludes as a rectangular shoulder or like a step so that the cutting edge of the cutting tool (10), defined by the relative distance (x), engages with a drawn shaving.
2. Processing device (1) according to claim 1, characterised in that the processing device (1) further has a processing tool (7), preferably drawn shaving tool, which is arranged adjacent the scanning element (6) such that processing of a workpiece is carried out before processing by the cutting tool (10).
3. Processing device (1) according to claim 2, characterised in that the processing tool (7) and the cutting tool (10) are similar tools, in particular cutting blades.
4. Processing device (1) according to one of the preceding claims, characterised in that the scanning element (6) can be moved relative to the cutting tool (10) via an adjusting device (3).
5. Processing device (1) according to claim 4, characterised in that the adjusting device (3) and the cutting tool (10) are attached to a common base support (2).
6. Processing device (1) according to one of the preceding claims, characterised in that the run-out section (6c) of the scanning surface (6a) is curved, and specifically having a smaller radius of curvature than a radius of curvature of the scanning surface (6a) in a central region of the scanning element (6).
7. Processing device (1) according to one of claims 4-5, characterised in that the adjusting device (3) is a hydraulically or pneumatically actuatable adjusting device, a piezoelectric actuator and/or moving-coil actuator, a servomotor, or manual adjustment by means of a spindle.
8. Processing device (1) according to one of the preceding claims, characterised in that the cutting tool (10) can be adjusted pneumatically, hydraulically or mechanically relative to the scanning element (6).
9. Processing device (1) according to one of claims 2-3, characterised in that the processing tool (7) can be adjusted pneumatically, hydraulically or mechanically relative to the scanning element (6).
10. Processing device (1) according to one of the preceding claims, characterised in that the cutting tool (10) has a 70-110° cutting edge aligned preferably vertically to the relative movement direction between the scanning element (6) and the workpiece (W), in particular a conveying direction (F) of the workpiece (W), and which is preferably aligned horizontally.
11. Processing device (1) according to claim 1, characterised in that the cutting tool (10) has three or four cutting edges, and is accommodated to be rotatable on a mounting.

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