DE6913117U - SHEEP MACHINE - Google Patents

Description

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" " PATENTANWÄLTE "'' - - '

Dr. W. SCHALK Dipl.-Ing. P. WIRTH · Dipl.-Ing. G. DANNENBERG Dr. V. SCHMIED-KOWARZIK · Dr. P. WEINHOLD

DR.D.GUDBL

p "/ j. 6 FRANKFURT AM MAIN _

tru / —X March 31, 1Q6Q

CR. ISCHtMMElMER »TR. S9 S> · »» ^al ^ I Z7 U ^? Adolf John & Co., G.m.b.H., Hanau / M. Stocking machine.

The invention relates to a dobby for sharpening of wooden panels also of different lengths by means of one the front or rear edge of the panel shaft milling cutter.

Such dobby shafts the front and rear Edge of a plate at an acute angle so that this «plate in a subsequent shaft press can be glued to a previous or subsequent wooden panel attached in the same way, so that an endless band of these wooden panels is produced. The width of the wooden panels is determined by the width of the Machines specified. This endless band of wooden panels is then attached to the shaft press on the desired Cut to size.

There is a stocking machine known in which the wood panels, the plywood panels, fibreboard or Chipboard can be, coming from a stack of panels, entered into the stocking machine via a loading device where the respective plate to be machined is fixed in a position in which the front milling cutter removes the plate can edit. After the front edge has been cut, the board is transported to a position in which the rear milling cutter can cut the rear edge of the wooden board. To Completion of these two operations, the 'plate leaves the machine, whereupon both milling cutters in their starting position to be retrieved. This time required to retrieve the two milling cutters is the actual machining time lost. Furthermore, the well-known stocking machine

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the disadvantage that they must use relatively expensive safety devices that prevent the front Shank milling cutter begins to return when the plate is still in its return path, that is, when the rear edge of the wooden panel is processed.

The invention avoids these disadvantages. It is based on the task of creating a dobby of the type mentioned at the beginning to design that the cycle time of the stocking machine is reduced. At the same time, the expense for safety devices be reduced.

This object is achieved according to the invention in that at least one of the two shaft milling cutters on a support beam is guided, which can be lifted or lowered from the plane of the plate to be processed. In this way it is achieved that For example, the front milling cutter is already in its starting position can run back when the plate is moved into the position for processing its rear edge or when this rear edge is shanked. Correspondingly, the The next wooden panel can be fed into the seaming machine.

Since in such a stocking machine generally the front Edge obliquely upwards and the rear edge obliquely downwards, it is advantageous if the front support beam upwards and the rear support beam can be lifted downwards by means of a lifting device.

To initiate the lifting process, each end mill has advantageously a limit switch, which is approached by this end mill after completion of the operation, whereupon the lifting of the support beam with the end mill attached to it is initiated.

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When the lifted position is reached, a further limit switch can then be provided which initiates the return of the shaft milling cutter into the starting position with respect to the support beam. In this phase the support beam is still in the raised position; only the milling cutter has moved back into its starting position with respect to the support beam.

Finally, a further limit switch can be provided which, when the end mill reaches the starting position is approached with respect to the support beam, whereby the support beam is moved back into the starting position. from Starting from this position, the end mill can start machining again with the next work cycle.

The invention is explained in more detail below using an exemplary embodiment. It shows:

Fig. 1 is a side view of a stocking machine accordingly

the section A-A of Fig. 2 and Fig. 2 is a plan view of the stocking machine according to Fig. 1, partially cut.

The wooden panels to be processed are which can be plywood, fiberboard or chipboard, fed into the stocking machine by means of a loading device (not shown). The feed rollers r driven by the motor w transport the plate up to the table t of the front support beam. Here, the plate is initially driven at rapid traverse speed retracted into the stocking machine, bia the front edge of the plate ti on the photocell E3 generates a signal which the drive motor χ switches to creep gear with a time delay.

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This drive motor χ is stopped as soon as the plate a actuates the limit switch E6. About this limit switch closes the pressure bar f so that the plate is fixed. This pressure beam works hydraulically.

When the final pressure is reached, one is not shown Pressure switch of the limit switch Eg lowered so that the The table surface for the milling cutter c is free. In this phase the milling cutter is in the one shown in FIG. 2 Position, i.e. viewed in the working direction of the seaming machine at the left end of the support beam h. In the representation of the Fig. 1, the shaft cutter is lowered so that he now has the can edit the front edge of the plate a. This position is shown in dashed lines in FIG.

After cutting the plate a, the milling cutter operates the end holder Eio »provided at the right end of the support beam h, whereby the support beam is raised via the dip lifting device U into the position shown in FIG will.

When the upper position is reached, another limit switch E4 actuated, which immediately initiates the return of the shaft cutter c into its starting position. The starting position is controlled by the limit switch E8, which, as soon as it is approached, lowers the Bupportträger h so that the The end mill is back in its original position.

The limit switch opens the pressure bar f and at the same time lets the roller transport m start up again via its drive motor χ to start the plate for the second shaft process to provide their rear edge. This rear edge gives the after passing the light barrier E1 Command to switch the drive motor from rapid traverse to creep speed. After passing the further light barrier E2, the motor is switched from creep speed to stop with a time delay.

The plate a is thus in the position shown in FIG. In this position the pressure bar g closes.

As with the processing of the front edge of the wooden panel, the command is also given here via a hydraulic pressure switch for the shafting process of the rear shaft milling cutter b.

This shaft cutter thus leaves its starting position and moves to a limit switch Eg after the end of the shaft process. This limit switch opens the pressure bar g, switches on the plate transport in the direction of the arrow, so that the plate a moves out of the machine, lowers the rear support beam i into the position shown in broken lines in Pig.l and lets the next wooden plate s enter the stocking machine. While the next plate is already running in, the lowered support moves back to its starting position, where it actuates _{the limit switch E 7.} The stocking machine is now ready for the next work cycle.

It can thus be seen that, by lowering the rear support beam, the shaft milling cutter is in its starting position can run back while at the same time the next

* "Plate is running in.

The rear milling cutter b, which is the actual cutter head the preheating device is driven by a Mo ± ore, while the front milling cutter accordingly is driven by a motor d. The lowering of the rear support beam i takes place in the same way as the front one Support beam h via a lifting device Y. q. represents a counter bearing for the pressure beam g.

. The shaft milling cutters b and c together with their drive motors d and e are transported by chain drive motors k and 1 (see Pig. 2). The feed rollers r are controlled by the tightening motor w driven.

The support beams h and i still have vertical guides

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By means of the device according to the invention was in the illustrated embodiment, a time saving of about 15 percent of the work cycle time compared to a Seaming machine without the device according to the invention achieved.

Claims (5)

- ■ ■ Adolf John & Co. GmbH, Hanau Protection claims; \ y 1. Seaming machine for seaming wooden panels, also of different sizes Length by means of an end mill shanking the front or rear edge of the plate, characterized in that, that at least one of the two end mills (b, c) is guided on a support beam (h, i) which is out of the plane the plate to be processed (a) can be raised or lowered. 2. Seaming machine according to claim 1, characterized in that the front support beam (h) upwards and the rear support beam (i) downwards by means of a lifting device each direction (U, Y) can be lifted. 3. Sharpening machine according to one of claims 1 or 2, characterized in that each shaft milling cutter (b, c) approaches a limit switch (Eg, E ₁₀ ) after the end of the operation, which initiates the lift-off. 4-. Dobby according to claim 3 »characterized in that when the lifted position is reached, the limit switch (E., Ec) is approached, which causes the end mill to return (b, c) initiates the starting position with respect to the support beam (h, i). 5. Seaming machine according to claim 4, characterized in that when the starting position of the milling cutter (d, c) is reached with respect to the support beam (h, i), a limit switch (Ey, E _Q ) is approached, which moves the support beam (into the starting position. The patent attorney: λ