JPS6010805Y2 - Veneer cutting equipment - Google Patents

Description

[Detailed description of the invention] The present invention is a veneer clipper that cuts veneers such as small veneers into waste veneers and effective veneers. By using an endless conveyor to form a parallel conveyance path for veneers across the cutting point, it is possible to perform parallel cutting of small-sized veneers (cutting in which the cutting lines of the cutting points are parallel), which was previously impossible. At the same time, the veneer portion that remains uncut due to the notch provided in the cutter or receiving blade is pre-divided by a cutting roll provided at a position corresponding to the notch to separate effective veneer and waste veneer. Complete separation has previously provided a veneer cutting device that can reliably remove waste veneers from the conveyance path and feed useful veneers to the next process.

To explain the present invention with reference to an embodiment shown in the drawings, an incoming conveyor 1 conveys a veneer A such as a small cloth in a conveying direction F perpendicular to the fiber direction of the veneer A. A roll type receiving blade 2 is provided.

A rotary knife barrel 3 is provided above the roll-type receiving blade 2, and a knife 4 for cutting the front end of the veneer A and a knife 4' for cutting the rear end are attached to the knife barrel 3. , these blades 4 and 4' and the roll receiving blade 2 cut the veneer A at a cutting point P in the fiber direction, that is, in a direction perpendicular to the conveying direction F.

As shown in FIG. 2, each of the blades 4 and 4' has a plurality of notches 5 (two in this example) near the cutting edge.
and 5' are provided, and these notches 5 and 5 are provided.
' The parallel transport path of the veneer A passing through the front of the cutting point P (
A plurality of endless conveyors 6 (two in this example) forming a conveyance path for conveying the veneers in parallel are provided.

In addition to providing this notch in one blade as in the embodiment, the blade may be divided into a plurality of blades and a gap may be provided between the blades, and the gap may be used as a notch. All you have to do is form it.

Is the endless conveyor 6 a rotating wheel that goes around the knife barrel 3? , 8
．． 9 to form a parallel transport path for transporting the veneer A in the transport direction F between the rotary wheels 7 and 8.

When this parallel transport path is formed only by the endless conveyor 6, a large number of sticking bodies N are attached to the endless conveyor 6, and the veneers are stuck and transported by the sticking bodies N.

When the sticking body N is not attached, the endless conveyor 10 is arranged below the endless conveyor 6, the endless conveyor 10 is stretched around the rotating wheels 11, 12, 13 so as to go around the roll receiving blade 2, and the The type receiving blade 2 has a notch 5 provided in the cutter 4, 4'.
, 5', and the notch 14 is connected to the endless conveyor 1 between the rotary wheels 11 and 12.
0, and the endless conveyor 6 and the endless conveyor 10 form a nipping and conveying path for the veneer across the cutting point P, creating a parallel conveying path for the veneer.

When forming a parallel transport path for the veneer across the cutting point P in this way, if a notch is provided in the blade, the veneer will not be cut at the missing part, and the notch in the receiving blade will not cut the veneer at the missing part. When present, complete cleavage does not occur at the site of deletion.

That is, as shown in Figure 3, the veneer is cut along the cutting lines Q and Q'
Cut the effective veneer A' and the waste veneers B and B'
When separating into parts, in the part R corresponding to the notch,
Effective veneer A' and waste veneer A portion of the uncut veneer that has not been separated from veneers B and B' remains.Because of this veneer portion, effective veneer A' and waste veneer A' and waste veneer remain uncut. Plates B and B' are not completely separated.

This incomplete cutting often occurs in the case of green veneers containing a large amount of moisture, and this causes problems such as the inability to reliably remove the waste veneers B and B' from the conveyance path.

Therefore, in the present invention, a cutting roll 15 is provided for dividing these veneer sections in advance.

The notch rolls 15 are disposed on the upper side of the endless conveyor 6.10 in the conveying direction F (in the embodiment, at the portion of the carry-in conveyor 1) at positions corresponding to the respective notches 5, 5', and 14. A large number of cutting blades K are attached to the circumferential surface of the
As shown in Fig. 3, these cutting blades K make multiple incisions across the cutting lines Q and Q' in the veneer at the part R corresponding to the notch, leaving them uncut. The veneer section is divided in advance.

This separation is performed by an actuating mechanism 16 as shown in FIG.
The cutting roll 15 is raised and lowered to a standby position shown by a solid line and an operating position shown by a dotted line, and when the cutting roll 15 is in the working position shown by a dotted line, the receiver and the roll 17 make a cut in the veneer.

The lifting and lowering operation of the cutting roll 15 is controlled by the cutting lines Q and Q' of the veneer detector 18 disposed in front of the cutting roll 15.
This is done based on the detection signal of

The veneer detector 18 is commonly used in this type of veneer clipper to detect the cutting line of the defective part of the veneer, so a detailed explanation thereof will be omitted, but as shown in FIG. Detectors are arranged in a direction perpendicular to the conveying direction F, and each detector is activated depending on the thickness of the veneer passing through. At the front end of the veneer, when all the detectors detect the set thickness, that is, When the cutting line Q is detected, and one of the pieces at the rear end of the veneer deviates from the set thickness, that is, when the cutting line Q' is detected, a detection signal is emitted, and based on the detection signal, For example, operate a knife and cut lines Q, Q
' is cut.

Since the veneer detector 18 detects the cutting lines Q and Q' of the veneer, the operating mechanism 16 is actuated based on this detection signal to control the vertical movement of the cutting roll 15. The cutting edge K cuts the cutting line Q as shown in Figure 3.
, The incision is made to the extent that the veneer can be divided over the length of Q'.

The method of carrying out the present invention will be explained below using an embodiment in which an endless conveyor 6 is attached with a sticking body N.

The operating mechanism 19 drives the endless conveyor 6 intermittently, and the running of the endless conveyor 6 is performed based on the detection signal from the single plate detector 18, and the stopping is performed by detecting a detection terminal attached to the endless conveyor 6. This is done so that the tip N' of the punctured body N is always at a predetermined position using the device 20.

The pressure roll 21 is disposed above the end of the carrying-in conveyor 1, and detects the cutting line Q of the veneer by the veneer detector 18,
The actuating mechanism 22, which operates based on the detection signal of Q', reciprocates between the standby position shown by the solid line and the working position shown by the dotted line in FIG. By pressing the surface, the sticking body N is stuck to the veneer.

The operating mechanism 23 drives the cutter side 3 intermittently, and also rotates the cutter side 3 based on the detection signal from the single plate detector 18, and stops it by a detection terminal attached to the shaft of the cutter side 3. The cutter 4 or 4' is stopped at a predetermined position based on the detection signal from the detector 24.

Then, the detection signals of the cutting lines Q and Q' of the single plate detector 18 are transmitted to each operating mechanism 1 with or without a timer.
6, 19, 22, and 23 to perform their respective operations.

That is, based on the detection signal of the cutting line Q at the front end of the veneer detector 18, the actuating mechanism 16 is activated to lower the cutting roll 15, and the veneer is cut across the cutting line Q by ''. The endless conveyor 6 is operated by operating the operating mechanisms 19 and 22.
At the same time, the press roll 21 is moved from the standby position to the working position to stick the sticking body N only to the effective veneer A', and the actuating mechanism 23 is actuated to rotate the knife barrel 3. The blade 4 is driven to cut along the cutting line Q at the cutting point P.

When cutting along the cutting line Q at the front end of this veneer is performed, the veneer is cut in the vicinity of the cutting line Q by the cutting roll 15 and the veneer portion has been divided in advance, so that the effective veneer A ' and the scrap veneer B at the front end are completely separated,
Further, since the waste veneer B at the front end is not stuck with the stuck body N, it falls downward from the gap 26 between the cutting point P and the carry-out conveyor 25 and is removed.

Next, each actuation mechanism 16, 22, 23 is actuated again based on the detection signal of the cutting line Q' at the rear end of the single plate detector 18,
By the actuation of the actuation mechanism 16, the incision roll 15 is lowered in the same manner as described above to make a cut across the cutting line Q'. The press roll 21 is moved from the working position to the standby position so as not to stick B', and the operating mechanism 23 is operated to rotate the knife barrel 3 again to cut the rear end cutting knife 4'.
Accordingly, the cutting along the cutting line Q' at the cutting point P is performed.

Since the veneer portion has been divided in advance in this cutting along the cutting line Q' at the rear end, the effective veneer A' and the waste veneer B' at the rear end are completely separated, and therefore the waste veneer B' at the rear end is separated. Veneer B'
Similarly, it falls downward from the gap 26 and is removed.

On the other hand, the effective veneer A' is stuck by the sticking body N at the pressure roll 21, and this stuck state is at the cutting point P
This continues until it is released from the sticking by the release bar 27 at the rotary wheel 7, so that the loading conveyor 1
In the transportation from to the cutting point P, the impact of cutting at the cutting point P, and the transportation from the cutting point P to the carry-out conveyor 25,
Parallel transport of the veneer is carried out without the veneer being skewed or displaced in the lateral direction of the transport direction F, and the cutting line Q at the front end is
This allows cutting parallel to the cutting line Q' at the rear end.

When a parallel conveyance path for veneers across the front of the cutting point P is formed by the upper and lower endless conveyors 6.10, the veneer can be conveyed in parallel by the sandwiching conveyance path by both endless conveyors, similar to that in the endless conveyor with a sticking body. Parallel cutting is performed, and removal of the harmful waste veneer from the conveyance path is performed by an opening/closing body 28 disposed between the conveyance path of the endless conveyor 10 and the discharge conveyor 25.

That is, the opening/closing operation of the opening/closing body 28 is performed based on the detection signals of the veneer cutting lines Q and Q' of the veneer detector 18, and by the opening/closing operation, the effective veneer A' is transferred to the carry-out conveyor 25. The veneers B and B' fall downward from the gap 26 and are removed.

In the examples, the cutter and receiver blade are illustrated and explained as being rotary type, but the cutter may be a reciprocating type, the receiver blade may be a fixed type, or the cutter may be of a fixed type, or a structure in which the cutter is arranged below and the receiver blade is arranged above. It can be implemented similarly.

As described above, in the present invention, a notch is provided in the cutter or the receiving blade, or both, to serve as a path for the endless conveyor, and the endless conveyor forms a parallel conveyance path for the veneer across the cutting point. Even on small hills, suitable cuts can be made for cross-splitting parallel to the cutting line of the mae-yaku, and since the veneer portion that remains uncut due to the notch is separated in advance by the cutting roll, the effective veneer and the scrap of mae-yaku are separated. It is possible to completely separate the plates and ensure that only the valid veneer is transferred to the next process.Furthermore, if the blade is a rotary type as in the example, high-speed cutting is also possible. The device can be installed on the veneer lace line, and the veneer lace and veneer cross-cutting machine can be directly connected to perform high-speed processing of para-veneer, making a great contribution to the plywood industry. .

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, with the first figure being a side view and the second figure being a side view.
The figure is a plan view of FIG. 1, and FIG. 3 is an explanatory diagram showing the procedure for dividing the uncut portion of the veneer. 1... Loading conveyor, 2... Field type receiving blade, 3... Cutler body, 4, 4'... Cutler, 5, 5'. ... Notch, 6 ... Endless conveyor, 10 ... Endless conveyor, 14 ...
...concave groove-shaped notch, 15... cut roll,
16, 19, 22.23... Operating mechanism, 18.
...Single plate detector, 21...Press roll,
25... Carrying out conveyor, 26... Gap, 27... Separation bar, 28... Opening/closing body, A... Single plate, A '・・・Effective veneer, 1
3. B'... Scrap veneer, D... Veneer part remaining uncut, K... Cutting blade, K'.
・・・・・・Notch, N・・・・Pulse body, P・・・・・・ Cutting point, Q, Q'・・・・・・ Cutting line of Mae-yaku.

Claims (1)

[Scope of utility model registration request] In a veneer clipper that cuts a veneer, such as a veneer, into waste veneer and effective veneer based on a detection signal from a veneer detector while conveying the veneer in a direction perpendicular to the fiber direction of the veneer, the cutter and receiving blade or A plurality of cutouts are provided on either side, and a plurality of endless conveyors are provided that pass through each cutout to form a parallel transport path for the veneer to the front of the cutting point P, and the endless conveyor conveys the veneer. It is located on the upper side of the direction and is moved up and down based on the detection signal of the veneer detector at a position corresponding to each notch that becomes the path of each endless conveyor, and remains uncut for each of the notches. A veneer cutting device that is equipped with a cutting roll that preliminarily divides the veneer portion near the cutting line of the veneer.