Processing machine and method for processing work pieces

Patent metadata

Field	Value
Publication number	US-10775763-B2
Application number	US-201615763824-A
Country	US
Kind code	B2
Filing date	Jul 27, 2016
Priority date	Oct 6, 2015
Publication date	Sep 15, 2020
Grant date	Sep 15, 2020

Abstract

The invention relates to a processing machine ( 10 ) or method for processing substantially plate-shaped work pieces (W), preferably made at least partially from wood, wood materials, composite materials or plastics, wherein the processing machine ( 10 ) has a processing device ( 6 ) for processing a work piece (W) in a processing direction (R), an optical detection device ( 2 ), an evaluation unit and a control device ( 4 ), wherein: the optical detection device ( 2 ) is designed and configured in such a way that it can optically detect front and rear (in relation to the processing direction ( 6 )) end sections (Q 1 , Q 2 ) of a work piece (W) to be processed, and it provides the evaluation unit with corresponding detection results; the evaluation unit is designed in such a way that it assesses, based on the detection results, whether a coating (B) is present on the front and/or rear end section (Q 1 , Q 2 ) of the work piece (W) to be processed, and provides the control device ( 4 ) with corresponding assessment results; and the control device is designed in such a way that it controls the further processing of the work piece (W) to be processed via the processing device ( 6 ) on the basis of the assessment results.

First claim

The invention claimed is:

1. A processing machine for processing of substantially plate-shaped work pieces which are made at least partially from a group consisting of wood, wood materials, composite materials and plastic, wherein the processing machine comprises:
a processing device having multiple processing units for processing a work piece in a machining direction;
an optical detection device;
an evaluation unit; and
a control device,
wherein
the optical detection device is designed and arranged such that it can optically detect the front and rear end sections, in relation to the machining direction, of a work piece to be processed and provide the evaluation unit with the corresponding detection results,
the evaluation unit is designed such that it evaluates, based on the detection results, whether there is a coating on the front and/or rear end section of the work piece to be processed, and provides the control device with corresponding analysis results,
the control device is designed such that it controls the further processing of the work piece to be processed by the processing device based on the analysis results, and
the control device is furthermore designed such that it controls the further processing such that it controls at least one processing step by at least one of the processing units and in particular prevents at least one processing step if there is no coating on the front and/or rear end section of the work piece to be processed.

2. The processing machine according to claim 1 , wherein
the evaluation unit is furthermore designed such that, in the event that there is a coating on the front and/or rear end section of the work piece to be processed, it determines the material thickness of the corresponding coating from the detection results and provides the control device with the material thickness determined, and
the control device is furthermore designed such that it controls the further processing of the work piece to be processed by the processing device based on the material thickness determined.

3. The processing machine according to claim 1 , wherein
the evaluation unit is furthermore designed such that, in the event that there is a coating on the front and/or rear end section of the work piece to be processed, it determines further parameters of the corresponding coating from the detection results and provides the control device with them, and
the control device is furthermore designed such that it controls the further processing of the work piece to be processed by the processing device based on the further parameters.

4. The processing machine according to claim 3 , wherein the further parameters include the transition radii from the coating to the work piece to be processed and/or the transition bevels from the coating to the work piece to be processed and/or the thickness of the work piece to be processed.

5. The processing machine according to claim 3 , wherein
the evaluation unit is furthermore designed such that, if there is a coating on the front and/or rear end section of the work piece to be processed, it determines the material thickness for the corresponding coating, compares the material thickness determined with a predefined threshold value, and only determines the further parameters for the corresponding coating if the threshold value is exceeded by the material thickness of the corresponding coating.

6. The processing machine according to claim 1 , wherein the processing device comprises multiple processing units,
the evaluation unit is furthermore designed such that, in the event that there is a coating on the front and/or rear end section of the work piece to be processed, it determines the material thickness of the corresponding coating and compares the material thickness determined with a predefined threshold value, and
the control device is furthermore designed such that it controls the further processing such that it controls at least one processing step by at least one of the processing units and in particular prevents at least one processing step if the material thickness of the corresponding coating on the front and/or rear end section falls below the threshold value.

7. The processing machine according to claim 1 , wherein
the optical detection device is arranged such that it detects the front and/or rear end section of the work piece to be processed in a projection on a plane which is substantially parallel to the machining direction and vertical to at least one main surface of the work piece to be processed.

8. The processing machine according to claim 1 , furthermore with
a conveyor system for conveying the work piece to be processed in a conveying direction, wherein
the conveying direction is parallel to the machining direction;
the work piece is conveyed with continuous processing; and
the conveying speed is less than 200 m/min.

9. The processing machine according to claim 8 , wherein the conveying speed is between 15 m/min and 50 m/min.

10. The processing machine according to claim 1 , wherein
the optical detection device has:
two or more sensing devices which are arranged one after another in the machining direction, and/or
one or more pairs of optical sensing devices which are arranged opposite one another in pairs over the work piece to be processed in a direction vertical to the machining direction.

11. The processing machine according to claim 1 , wherein the optical detection system is an imaging system.

12. The processing machine according to claim 1 , further comprising:
a sensor device which is designed such that the position data for the work piece to be processed is detected and the corresponding position detection results are provided to the control device, wherein
the processing machine is designed such that the optical detection of the front and rear end sections of the work piece to be processed by the optical detection device is activated based on the position detection results.

13. The processing machine according to claim 1 , wherein the evaluation unit is integrated into the optical detection device or the control device.

14. A method for processing substantially plate-shaped work pieces which are made at least partially from a group consisting of wood, wood materials, composite materials and plastic, the method using a processing machine which has an optical sensing device and a processing device for processing a work piece in a machining direction, wherein the method comprises the following steps:
optical detection of the front and rear end sections of the work piece to be processed in the machining direction for the generation of corresponding detection results using the optical detection device;
evaluation of whether there is a coating on the front and rear end sections of the work piece for the generation of corresponding analysis results, wherein the evaluation occurs through analysis of the detection results;
control of the further processing of the work piece by the processing device based on the analysis results;
determination of the material thickness of the coating on the front and/or rear end section of the work piece to be processed through analysis of the detection results if the presence of a coating on the corresponding end section of the work piece to be processed was identified during the evaluation step;
control of the further processing of the work piece by the processing device based on the material thickness determined;
comparison of the material thickness determined with a predefined threshold value; and
if the material thickness determined exceeds the predefined threshold value;
determination o

Assignees

• Homag Gmbh

Inventors

• Knorr Wolfgang
• Friebolin Manuel
• Graf Joachim

Classifications

• B05B12/084

  responsive to condition of liquid or other fluent material already sprayed on the target, e.g. coating thickness, weight or pattern · CPC title

• B29C63/0026

  an edge face with strip material, e.g. a panel edge (securing a veneer strip to a panel edge B27D5/003) · CPC title

• G05B2219/36221

  Entry of chamfer, beveling, rounding of corner shape · CPC title

• B27D5/006

  Trimming, chamfering or bevelling edgings, e.g. lists (B23C3/126 takes precedence) · CPC title

• G05B19/19 Primary

  characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path · CPC title