EP1099523A2 - Improved automatic flanging machine - Google Patents

Improved automatic flanging machine Download PDF

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Publication number
EP1099523A2
EP1099523A2 EP00124077A EP00124077A EP1099523A2 EP 1099523 A2 EP1099523 A2 EP 1099523A2 EP 00124077 A EP00124077 A EP 00124077A EP 00124077 A EP00124077 A EP 00124077A EP 1099523 A2 EP1099523 A2 EP 1099523A2
Authority
EP
European Patent Office
Prior art keywords
flanging machine
panel
tool
machine according
tooling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP00124077A
Other languages
German (de)
French (fr)
Other versions
EP1099523B1 (en
EP1099523A3 (en
Inventor
Mauro Sandon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fravol Export Srl
Original Assignee
Fravol Export Srl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fravol Export Srl filed Critical Fravol Export Srl
Publication of EP1099523A2 publication Critical patent/EP1099523A2/en
Publication of EP1099523A3 publication Critical patent/EP1099523A3/en
Application granted granted Critical
Publication of EP1099523B1 publication Critical patent/EP1099523B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D5/00—Other working of veneer or plywood specially adapted to veneer or plywood
    • B27D5/006—Trimming, chamfering or bevelling edgings, e.g. lists

Definitions

  • This invention refers to an improved flanging machine, designed in particular to process the opposite edges of panels or the like, holding two separate tooling assemblies capable of performing the milling and/or rounding of the panel's front and rear edges during its forward motion.
  • the milling assemblies move along with the panel, but are sliding on an inclined plane and subject to the action of a linkage that controls the rotation of the milling assembly along a path corresponding to a profile to be realized on the edge of the panel.
  • the characteristics of the flanging machine allow achieving a more precise motion of the tool, as well as controlling its sliding speed, so that the latter moves faster at the beginning and at the end of the processing operation.
  • the panels manufactured for instance from enhanced hardboard or the like are usually finished by applying heavy wooden edges, which are then rounded off based on profiles varied from time to time, so as to achieve for instance a semicircular edge, or a flat edge with rounded corners.
  • the Italian patent no. 1.295.377 of the same applicant describes a flanging machine equipped with a profiling device comprising some means capable of engaging a milling tool with the panel edge, other means for controlling the forward sliding of this tool along with the panel, and additional means to impart to the latter a trajectory befitting the profile to be generated on the panel.
  • this known flanging machine includes a tooling assembly installed on a support which is in turn mounted on a trolley sliding along a rail set up in a direction parallel to the forward motion of the panels and equipped with a motorized chain attached to said support, that engages a toothed element firmly attached to the same support so as to simultaneously control both its rotation and forward motion on said trolley.
  • This invention now enters the same branch. It proposes an improved flanging machine comprising two separate tooling assemblies designed to process a panel's front and rear edge, respectively, and to move along a plane inclined with respect to the forward motion of the panel, under the action of a linkage which controls the rotation so as to force the tool, with extreme precision, to follow a path befitting the profile to be achieved on the panel.
  • the flanging machine comprises two milling assemblies, identified by the reference numbers 1 and 2, respectively, the first being designed to process the front edge and the second to work the rear edge of a panel illustrated in a simplified form and marked by the number 3, while advancing in the direction of the arrow F.
  • each milling assembly is assembled twice, first in its starting position and then in its final processing position.
  • Each assembly comprises a tool indicated by the number 4 in Figure 2, actuated by a motor 5 and mounted on a support 6 sliding along a guide on recirculating rollers 7, which is mounted on the inclined plane 8.
  • the shifting motions of the support 6 along the guide 7 are controlled by an electric motor 9, preferably a brushless motor actuating a screw on recirculating rollers 10, on which a nut screw 11 solidly attached to the support 6 is allowed to slide.
  • an electric motor 9 preferably a brushless motor actuating a screw on recirculating rollers 10, on which a nut screw 11 solidly attached to the support 6 is allowed to slide.
  • the nut screw is also illustrated twice in the Figures 4 and 5, in the tool's initial and final positions, respectively.
  • the support 6 ( Figure 3) is solidly attached to a crank 12, hinged to a connecting rod 13 which is in turn hinged on its opposite side to a fixed arm 14, attached to the inclined support 8.
  • the lever connected to the milling assembly is arranged so as to control the rotation of its relative support in one direction, in this figure for example in a counterclockwise sense, while the lever 13 connected to the assembly 4 (refer to Figure 4) is positioned so as to control its rotation in an opposite direction, in this figure in a clockwise sense.
  • the crank 12 is firmly attached to a ring gear 20, connected by a chain 21 to a another ring gear 22 which is in turn firmly attached to the support 6.
  • the ratio between the ring gears 20 and 22 is such that the ring gear 22 completes a larger rotation with respect to that of the ring gear 20, at a ratio of 1:1.3, for example.
  • the result is to achieve a rotation of 180° of the milling assembly, while rotating the connecting rod and crank system by about 36°.
  • the panel is carried along on a conveyor belt or similar carrying device of a known type and brought up to the processing area, where its presence is detected by a sensor of a known type not shown in the figure but connected to the support of the milling assembly.
  • the milling group moves up to contact the upper surface of the same, and the tool is rotated.
  • this also actuates the motor 9, which causes the milling group, with the aid of the recirculating roller screw 10, to slide along the guide 7 arranged on the inclined plane 8, and therefore to move forward along with the panel.
  • the tools run along a curve corresponding to the profile to be imparted to the edge, thus performing the milling process.
  • the latter works in a manner similar to the former, by using a sensor to prime the starting motion of the tool, which slides along the guide 7 by moving forward along with the panel while being simultaneously rotated, by the lever 13, in a direction opposite to that of the milling assembly 3, thus achieving a processing effect similar to that performed on the front edge.
  • the flanging machine produced in this manner allows achieving a better precision in following the desired profile while also allowing an optimization of the tool's shifting speed with respect to the panel.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Milling, Drilling, And Turning Of Wood (AREA)
  • Milling Processes (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Paper (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Basic Packing Technique (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Automatic Control Of Machine Tools (AREA)

Abstract

This invention describes an improved automatic flanging machine, characterized in that it provides for at least one tool capable of processing the edges of a forward moving panel, where said tool can slide along an inclined plane with respect to the panel's forward motion, while suitable devices are provided which are capable of synchronizing the sliding speed of the tool with the speed of the panel, and others capable of controlling the tool's support during the processing phase.

Description

This invention refers to an improved flanging machine, designed in particular to process the opposite edges of panels or the like, holding two separate tooling assemblies capable of performing the milling and/or rounding of the panel's front and rear edges during its forward motion.
The milling assemblies move along with the panel, but are sliding on an inclined plane and subject to the action of a linkage that controls the rotation of the milling assembly along a path corresponding to a profile to be realized on the edge of the panel.
The characteristics of the flanging machine allow achieving a more precise motion of the tool, as well as controlling its sliding speed, so that the latter moves faster at the beginning and at the end of the processing operation.
These characteristics allow achieving a better precision of the work. In the woodworking industry and in particular in the furniture industry, the panels manufactured for instance from enhanced hardboard or the like, are usually finished by applying heavy wooden edges, which are then rounded off based on profiles varied from time to time, so as to achieve for instance a semicircular edge, or a flat edge with rounded corners.
For many years, the application of edges to panels and the subsequent finishing was performed by special and separate machines, which required the transferring of the panels from one machine to another, their proper positioning and the introduction of a separate processing phase, thus lengthening the processing time and affecting the production cost.
Certain flanging machines have been recently introduced, which are capable of automatically rounding off the edges after applying them.
In particular, the Italian patent no. 1.295.377 of the same applicant describes a flanging machine equipped with a profiling device comprising some means capable of engaging a milling tool with the panel edge, other means for controlling the forward sliding of this tool along with the panel, and additional means to impart to the latter a trajectory befitting the profile to be generated on the panel.
In particular, this known flanging machine includes a tooling assembly installed on a support which is in turn mounted on a trolley sliding along a rail set up in a direction parallel to the forward motion of the panels and equipped with a motorized chain attached to said support, that engages a toothed element firmly attached to the same support so as to simultaneously control both its rotation and forward motion on said trolley.
This invention now enters the same branch. It proposes an improved flanging machine comprising two separate tooling assemblies designed to process a panel's front and rear edge, respectively, and to move along a plane inclined with respect to the forward motion of the panel, under the action of a linkage which controls the rotation so as to force the tool, with extreme precision, to follow a path befitting the profile to be achieved on the panel.
This invention will now be described in detail, for exemplifying and nonlimiting purposes, with reference to the enclosed figures in which:
  • Figure 1 shows the profiling devices with the relative sliding guides in a flanging machine according to the invention, in their initial and final processing positions, respectively,
  • Figure 2 is a view of a profiling assembly in an orthogonal plane with respect to that in Figure 1;
  • Figure 3 illustrates a profiling assembly in a flanging machine according to the invention, evidencing the devices that control its rotation;
  • Figure 4 illustrates the second profiling assembly, again evidencing the devices that actuate its rotations;
  • Figure 5 shows a simplified view of the operation of the devices controlling the rotation of the profiling assembly of Figure 4.
With reference to figure 1, the flanging machine according to the invention comprises two milling assemblies, identified by the reference numbers 1 and 2, respectively, the first being designed to process the front edge and the second to work the rear edge of a panel illustrated in a simplified form and marked by the number 3, while advancing in the direction of the arrow F.
In the various figures each milling assembly is assembled twice, first in its starting position and then in its final processing position.
Each assembly comprises a tool indicated by the number 4 in Figure 2, actuated by a motor 5 and mounted on a support 6 sliding along a guide on recirculating rollers 7, which is mounted on the inclined plane 8.
The shifting motions of the support 6 along the guide 7 are controlled by an electric motor 9, preferably a brushless motor actuating a screw on recirculating rollers 10, on which a nut screw 11 solidly attached to the support 6 is allowed to slide.
The nut screw is also illustrated twice in the Figures 4 and 5, in the tool's initial and final positions, respectively.
The support 6 (Figure 3) is solidly attached to a crank 12, hinged to a connecting rod 13 which is in turn hinged on its opposite side to a fixed arm 14, attached to the inclined support 8.
The lever connected to the milling assembly is arranged so as to control the rotation of its relative support in one direction, in this figure for example in a counterclockwise sense, while the lever 13 connected to the assembly 4 (refer to Figure 4) is positioned so as to control its rotation in an opposite direction, in this figure in a clockwise sense.
The crank 12 is firmly attached to a ring gear 20, connected by a chain 21 to a another ring gear 22 which is in turn firmly attached to the support 6.
The ratio between the ring gears 20 and 22 is such that the ring gear 22 completes a larger rotation with respect to that of the ring gear 20, at a ratio of 1:1.3, for example.
This allows eliminating the forward moving difficulty and the effort exerted by the cinematic mechanism based on the connecting rod and crank at its dead points.
The result is to achieve a rotation of 180° of the milling assembly, while rotating the connecting rod and crank system by about 36°.
The operation is as follows:
The panel is carried along on a conveyor belt or similar carrying device of a known type and brought up to the processing area, where its presence is detected by a sensor of a known type not shown in the figure but connected to the support of the milling assembly.
As soon as the feeler engages the panel, the milling group moves up to contact the upper surface of the same, and the tool is rotated.
At the same time, this also actuates the motor 9, which causes the milling group, with the aid of the recirculating roller screw 10, to slide along the guide 7 arranged on the inclined plane 8, and therefore to move forward along with the panel.
As a result of the sliding action of the support 6, the lever 13 acts on the crank 12, thus rotating the support with the milling assembly 6 in a counterclockwise direction.
The tools run along a curve corresponding to the profile to be imparted to the edge, thus performing the milling process.
As soon as the tool reaches the upper surface of the panel, it is stopped and removed, while the panel continues its motion so as to be processed on its rear edge by the assembly 4.
The latter works in a manner similar to the former, by using a sensor to prime the starting motion of the tool, which slides along the guide 7 by moving forward along with the panel while being simultaneously rotated, by the lever 13, in a direction opposite to that of the milling assembly 3, thus achieving a processing effect similar to that performed on the front edge.
The flanging machine produced in this manner allows achieving a better precision in following the desired profile while also allowing an optimization of the tool's shifting speed with respect to the panel.
An expert in the trade may further provide various modifications and variants, all of which are to be held as falling within the scope of this invention.

Claims (7)

  1. An improved automatic flanging machine, characterized in that it provides for at least one tool capable of processing the edges of a panel while moving forward, characterized in that said tool is capable of sliding forward along an inclined plane with respect to the advancing motion of the panel, while certain devices are provided in order to synchronize the speed of sliding of the tool with the speed of the panel, and further devices capable of controlling the rotation of the tool while it performs the processing.
  2. A flanging machine according to claim 1, characterized in that it provides for two separate tooling assemblies capable of performing the processing on the front edge and on the rear edge, respectively, of a forward moving panel.
  3. A flanging machine according to each of the claims 1 or 2, characterized in that each of said tooling assemblies is hinged to a support moving along an inclined plane and subject to the action of a lever, hinged on one side to a crank firmly attached to the support of said tooling assembly, and on the other side to a support firmly attached to the structure of said inclined plane on which said tooling assembly is made to slide.
  4. A flanging machine according to claim 3, characterized in that said tooling assemblies are respectively subject to the action of levers arranged on opposite sides, so as to actuate the rotation of the assemblies in directions opposed to each other.
  5. A flanging machine according to the foregoing claims, characterized in that it provides for a number of independent actuators in order to control the shifting of said tooling assemblies along said inclined guides.
  6. A flanging machine according to claim 5, characterized in that said actuators are constituted by brushless motors which actuate a screw based on recirculating rollers.
  7. An enhanced flanging machine, as described and illustrated above.
EP00124077A 1999-11-09 2000-11-06 Improved automatic flanging machine Expired - Lifetime EP1099523B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1999MI002342A IT1314019B1 (en) 1999-11-09 1999-11-09 AUTOMATIC EDGEBANDING MACHINE, PERFECTED.
ITMI992342 1999-11-09

Publications (3)

Publication Number Publication Date
EP1099523A2 true EP1099523A2 (en) 2001-05-16
EP1099523A3 EP1099523A3 (en) 2005-04-27
EP1099523B1 EP1099523B1 (en) 2008-01-09

Family

ID=11383925

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00124077A Expired - Lifetime EP1099523B1 (en) 1999-11-09 2000-11-06 Improved automatic flanging machine

Country Status (5)

Country Link
EP (1) EP1099523B1 (en)
AT (1) ATE383232T1 (en)
DE (1) DE60037708T2 (en)
ES (1) ES2300244T3 (en)
IT (1) IT1314019B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1278371A2 (en) 2001-07-18 2003-01-22 Sony United Kingdom Limited Audio/video recording apparatus and method of multiplexing audio/video data
EP1719594A1 (en) * 2005-05-02 2006-11-08 Fravol Export S.r.l. Device for rounding corners of panels

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2523450C2 (en) * 1975-05-27 1988-05-26 Hornberger Maschinenbaugesellschaft mbH & Co KG, 7294 Schopfloch Device for processing the edges of continuously moving plate-shaped workpieces
US4991637A (en) * 1989-08-03 1991-02-12 Butler Timothy J Trimmer apparatus and method
DE59105800C5 (en) * 1991-10-24 2010-06-10 Brandt Kantentechnik Gmbh Trimming unit for separating overhangs from edge material.
DE4243054C1 (en) * 1992-12-18 1994-07-14 Homag Maschinenbau Ag Device for processing the edge edges of continuously moving plate-shaped workpieces
IT1295377B1 (en) * 1997-10-22 1999-05-12 Fravol Export S R L PROFILING DEVICE FOR THE PROCESSING OF THE EDGES OF PANELS AND MACHINE PROVIDED WITH THAT DEVICE

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1278371A2 (en) 2001-07-18 2003-01-22 Sony United Kingdom Limited Audio/video recording apparatus and method of multiplexing audio/video data
EP1719594A1 (en) * 2005-05-02 2006-11-08 Fravol Export S.r.l. Device for rounding corners of panels

Also Published As

Publication number Publication date
ITMI992342A1 (en) 2001-05-09
EP1099523B1 (en) 2008-01-09
ITMI992342A0 (en) 1999-11-09
DE60037708D1 (en) 2008-02-21
DE60037708T2 (en) 2009-01-08
IT1314019B1 (en) 2002-12-03
ATE383232T1 (en) 2008-01-15
ES2300244T3 (en) 2008-06-16
EP1099523A3 (en) 2005-04-27

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