Trimming saw

Post-processing unit at edgebanders that cuts of the front and rear edgeband excess.

Following the gluing of the panel edge, the front and rear edgeband excess has to be trimmed to the correct length. This is done by a trimming saw unit. Exceptions are machines of some producers, which trim coiled edges with the pneumatic trimmer, for example machines made by BiesseEdge, on BIESSE EDGE Edge-Control, and machines which apply the corner rounding unit for trimming, like for example HOLZ-HER SPRINT 1411-1 or the IMA QUADROMAT R3.

Workflow

Usually at first the two opposite edges are applied to the workpiece and trimmed by a 90° cut. While trimming, the already glued edge risks to be cut and damaged. In order to avoid this, the motors of the trimming saw unit can be tilted up to 30 °. The tilt is done manually or pneumatically.

Construction

The difficulty of the trimming is that the movement of trimming saws has be at an angle of 90 degrees (vertical or horizontal) to the feed movement of the workpiece. For this reason, the cut-off saws are moving with the workpiece. Technically, this vertical-horizontal movement is carried out in different ways:

  • Diagonal guides are used by most of the manufacturers, such as IN-butting unit 701 of the company Artech, aggregates of Bi-Matic, Brandt, Homag, IDM.
  • Horizontal parallel guides for the horizontal motion and parallelogram suspension of the saw motors for the horizontal trimming motion of the saw blade, for example trimming unit K3, made by Ott .
  • Horizontal parallel guides and forming wheel for the horizontal movement, for example trimming unit of the company IMA
  • Horizontal parallel guides and vertical guides for the bottom-top movement , for example trimming unit 1822, made by HOLZ-HER .

Concerning the maximum feeding speed of an edgebander, the trimming station is often the limiting factor. Hereinafter enumerated characteristics decide on the speed of the trimming process:

  • Number of motors: trimming unit with two motors usually allow higher speeds than a single-Motor unit.
  • Speed ​​of the motor: High frequency motors rotate at higher speeds. The cutting process is faster, it can increase feed rates.
  • Motor power: high-performance motors allow high feed rates, even with thick edge band.
  • Drive: linear drives work at a constant power, more accurately and faster than pneumatic actuators (linear technology).

Options

Images and Videos

Kappsägeaggregat an einer BRANDT KDF 670 profiline
2005
Video
Quadromat R3
IMA
Kantenüberstand vorn
Geradschnitt für 1. und 2. Anleimer
BIESSE ARTECH
Faseschnitt für 3. und 4. Anleimer
BIESSE ARTECH
Pneumatische Verstellung auf Faseschnitt
BRANDT
Diagonal geführte Kappsäge
BIESSE ARTECH
Parallelgeführt mit Parallelogrammaufhängung
OTT
Parallelgeführt mit Formscheibe
IMA
Einmotoriges Kappsägeaggregat
HOLZ-HER
OTT TORNADO
OTT, 2005
Video
Kappeinheit 0°-20° (G 580)
FELDER, 2009