JP2750528B2 - Veneer cutting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a veneer cutting apparatus.

The present applicant has previously described, for example, “Method of cutting veneer” (Japanese
No. 59-23241), the principle technology, and "Single-plate cutting device" (Japanese Patent Publication No. 54-6111) / "Single-plate cutting device"
(Japanese Patent Publication No. 58-54005) and the like, as disclosed in such an improved technology, a pair of single veneer transporters rotating symmetrically and a pair of cutting edges directed in a direction opposite to the transport direction of the veneer. An apparatus which mainly comprises a reciprocating rotary type cutting blade alternately abutting on the outlet side peripheral surface of the plate carrier, and which is capable of cutting the veneer using the transport force of the veneer. Developed and proposed.

According to the apparatus disclosed in each of the above publications, not only the advantage that the veneer can be cut without stopping the transport of the veneer, but also the advantage that the preceding veneer and the succeeding veneer can be reliably discriminated by the cutting blade. Because of this, it was convenient to cut a veneer to a fixed size or cut off unnecessary parts, and was excellent in practicality.

However, all of these devices employ a configuration in which the cutting edge of the cutting blade is brought into contact with the outlet side peripheral surface of the veneer carrier to finally cut the thin fuzz of the veneer and the like. At least one of the cutting edge of the blade and the peripheral surface of the veneer carrier tends to be excessively worn due to the abutment as compared to a case where the veneer simply contacts only the veneer. In order to maintain the cut state, it is necessary to frequently replace at least one of the two members, resulting in a large maintenance and management cost.

Therefore, a new “single-plate cutting device” (November 1988
(Filed on March 18, 2009) to eliminate the drawbacks of the conventional device.

That is, the cutting device of the new system has a plurality of grooves each continuous in the rotational direction at an arbitrary interval in the axial direction,
A pair of veneer carriers that are symmetrically rotated by the drive mechanism, and the cutting edge is oriented in the direction opposite to the veneer transport direction, and the veneer is also veneered to the outlet side peripheral surface of any of the veneer carriers. A cutting blade fixedly provided at an interval through which
Each tip extending to the vicinity of the cutting edge of the cutting blade through the groove portion of the pair of veneer carriers alternately guides the veneer to one surface side and the other surface side of the cutting blade. A pair of veneer guide members whose base ends are pivotally supported, and guide the veneer to one surface side of the cutting blade each time the veneer responds to a veneer cutting signal. And a swinging mechanism for swinging the veneer guide member at the position to a position where the veneer can be guided to the other surface side of the cutting blade.

According to such a configuration, since the cutting edge of the cutting blade does not abut on the peripheral surface of the veneer carrier at all, there is no possibility that each member will be excessively worn, and the disadvantages of the conventional apparatus will be eliminated while maintaining the advantages of the conventional apparatus. I was able to eliminate it.

However, the cutting device of the new method transports the veneer using the friction between the veneer and the veneer, and also applies the veneer to the outlet side peripheral surface of any veneer. Due to the configuration that the cutting blade is fixedly provided at intervals that allow the plates to pass, the conveying force that should resist the cutting resistance of the veneer may not always be given to the veneer accurately, and the cutting is unstable. It turned out that there were difficulties.

In other words, since the transport force using friction is limited by the friction coefficient between the veneer carrier and the veneer, when cutting veneers with extremely high cutting resistance, such as veneers where fibers intersect abnormally. ,
There is a tendency for cutting to be temporarily delayed due to insufficient transport power,
In an extreme case, such as when a veneer is erroneously carried in diagonally, cutting may become impossible, and the veneer is likely to be jammed in front of the veneer transporter.

Further, for example, when the interval between the peripheral surface on the outlet side of the veneer transporting body and the cutting blade is set in accordance with the thick veneer, when cutting a thin veneer, a position at which cutting resistance occurs and a transport force are applied. Is significantly different from the thickness of the veneer to be processed, so that there is a significant discrepancy between the direction of the cutting resistance and the direction of the conveying force. It is easy to cause inconvenience that the veneer buckles between the veneer carrier and the cutting blade due to the occurrence of defective cutting, and in order to avoid it, each time the veneer heat is changed, Since it is necessary to finely reset the distance between the outer peripheral surface of the plate carrier and the cutting blade in accordance with the thickness of the veneer to be processed, another difficulty such as remarkably complicated position adjustment is required. There is a risk of being triggered.

The present invention has been developed in order to solve both the drawbacks of the new system and the drawbacks of the above-mentioned conventional system. Specifically, the present invention has a double row around the axis at an arbitrary interval in the axial direction. A plurality of piercing bodies for plying a veneer in a veneer shape, a piercing / conveying member which is rotationally driven in a fixed direction by a driving mechanism, and a cutting edge directed in a direction opposite to the conveying direction of the veneer; A cutting blade fixedly provided at a position substantially parallel to and closest to the outermost peripheral surface of the receiving and conveying member, one from the side of the single-sheet inserting and conveying member through the row of the piercing bodies, and the other. Each tip extending from the other side of the veneer to the vicinity of the cutting edge of the cutting blade,
A pair of veneer guide members pivotally supported at their base ends so as to be able to swing between positions at which the veneer is alternately guided to one surface side and the other surface side of the cutting blade; Each time in response to the cutting signal, the veneer guide member at the position for guiding the veneer to one surface side of the cutting blade is swung to a position at which the veneer can be guided to the other surface side of the cutting blade. A single-plate cutting device including a moving mechanism is proposed.

According to the cutting device having such a configuration, by the synergistic action of the stab transfer operation of the stab transfer member and the guide operation of the veneer guide member, it is possible to cut the veneer without stopping the transfer of the veneer,
In addition to the cutting blade, the preceding veneer and the succeeding veneer can be surely discriminated, and the cutting edge of the cutting blade does not abut the outermost peripheral surface of the stab transfer member. However, since there is no fear that each member is excessively worn, and the single plate is stabbed and conveyed, a greater conveying force is exhibited as compared with the case where friction is used, and cutting resistance is reduced. A large veneer can be cut without delay, and a change in the thickness of the veneer can be absorbed by a change in the amount of sticking. It is possible to set according to, and it is difficult to cause a cutting defect due to a discrepancy between the direction of the cutting resistance and the direction of the conveying force, and a complicated position adjustment for avoiding the occurrence of the cutting defect Also eliminates the drawbacks of the conventional system and the disadvantages of the new system. Rukoto could be.

In addition, if another piercing / conveying member that rotates symmetrically is provided in addition to the original piercing / conveying member, the conveying force can be distributed from the other piercing / conveying member. This was more effective in stabilizing cutting than when only one side of the plate was provided.

In addition, if the distance between the outermost peripheral surface of the stab transfer member and the cutting blade is set to be smaller than the thickness of the veneer, the transfer force is reliably applied to the veneer very close to the position where cutting resistance occurs. Therefore, although it was very effective in stabilizing the cutting of any veneer, even if the interval was set wider than the thickness of the veneer, there was no danger that cutting would not necessarily be completely disabled, and in particular, If another piercing and conveying member that rotates symmetrically is provided, the conveying force can be applied in a distributed manner, so that even if the interval is set to be considerably larger than the thickness of the veneer, there is no particular difficulty in cutting. Did not.

Hereinafter, the present invention will be described in more detail with reference to an embodiment illustrated in the drawings.

 FIG. 1 is an explanatory side view of a cutting device according to the present invention.

In the drawing, reference numerals 1 and 2 denote roller-like puncturing and conveying members each having a large number of piercing bodies 1a and 2a for plying a single plate in a double row around the axis at an arbitrary interval in the axial direction. The outermost surfaces (the surfaces of the trajectories of the tips of the piercing bodies 1a and 2a) are provided so as to face each other so as to substantially coincide with each other. The veneer 9 is continually rotated and the veneer 9 carried in through the carry-in conveyor 10 is stabbed, and is subsequently carried in the direction of the arrow shown in the figure.

Reference numeral 3 denotes a double-blade type in which the blade edge is oriented in a direction opposite to the transport direction of the veneer 9 and the blade edge is fixedly provided in a position substantially parallel to and close to the outermost peripheral surfaces of the stab transport members 1 and 2. The veneer 9 which is a cutting blade and is stabbed and conveyed by the stab conveyance members 1 and 2 is guided by the veneer guide members 4 and 5 described later.
Each time the veneer is guided from one side to the other side, the veneer 9
Cut diagonally.

Reference numerals 4 and 5 denote a pair of veneer guide members each composed of a plurality of members. The cutting blade 3 is provided between one side of the veneer 9 and the other side through a row of the piercing bodies 1a and 2a. Each of the tips 4a and 5a extending to the vicinity of the cutting edge between the positions where the veneer 9 is alternately guided to one surface side and the other surface side of the cutting blade 3 as shown by a solid line and a dotted line. The base end portions 4b and 5b are pivotally supported by fulcrum shafts 21 and 22 so as to be able to swing. The cutting blade 3 is alternately guided to one side (the side where the carry-out conveyor 20 is located) and the other side.

Reference numeral 6 denotes an oscillating mechanism comprising a fluid cylinder, a cam, and the like, and oscillates the single plate guide members 4 and 5 alternately to positions shown by solid lines and dotted lines in response to the control of a control mechanism 8 described later. .

Reference numeral 7 denotes a single-plate detector composed of a plurality of phototubes, limit switches, and the like, which are provided adjacent to the carry-in conveyor 10 at right angles, and all the contacts 7a which are normally closed are all opened. As a result, the passage of the unnecessary portion 9a at the front end of the veneer 9 is detected, a cutting signal of the front end is transmitted to the control mechanism 8 described later, and one of the contacts 7a is closed, so that the veneer 9 is closed. The arrival of the unnecessary portion 9b at the rear end of the unit 9 is detected, and a rear end disconnection signal is transmitted to the control mechanism 8 described later.

Reference numeral 8 denotes a control mechanism, which operates the swing mechanism 6 based on the cutting signals of the front end and the rear end transmitted from the single-plate detector 7 with different degrees of delay as necessary. Is controlled in a delayed manner.

The cutting device according to the present invention is configured as described above, for example, and when the veneer detector 7 that detects the passage of the unnecessary portion 9a at the front end of the veneer 9 transmits a cutting signal at the front end to the control mechanism 8, When the unnecessary portion 9a reaches the cutting edge of the cutting blade 3 in response to the cutting of the control mechanism 8, the swinging mechanism 6 is moved to the position shown by the solid line in FIG. 4.
As shown in FIG. 2, the veneer 5 is pivoted to the position shown by the dotted line, so that the veneer 9 is cut obliquely, the effective portion is guided to the side where the carry-out conveyor 20 is located, and the unnecessary portion 9a is carried out. It is removed below the conveyor 20.

Next, the veneer detector 7 that has detected the arrival of the unnecessary portion 9b at the rear end of the veneer 9 sends a rear end cutting signal to the control mechanism 8, and in response to the control of the control mechanism 8, the unnecessary portion At the point when 9b reaches the cutting edge of the cutting blade 3, the swinging mechanism 6 swings the single plate guide members 4 and 5 in the opposite direction, so that the single plate 9 is tilted as illustrated in FIG. The effective portion is continuously guided to the side where the unloading conveyor 20 is located, and the unnecessary portion 9b is removed below the unloading conveyor 20. It is possible to

The embodiment illustrated in FIG. 4 includes a sticking / conveying member 11 having a piercing body 11a and a single-edged cutting blade 13 at predetermined positions, and one side and the other side of the cutting blade 13. To the side,
Upper and lower two-stage unloading conveyor 23 with fixing detectors 16 and 17 next to it
24, and a pair of single plate guide members 14 and 15 each comprising a plurality of base plates 14a and 15a, respectively, so that the distal ends 14a and 15a swing between positions indicated by solid lines and dotted lines. A cutting device configured to pivotally support 15b by fulcrum shafts 21 and 22 and to control the operation of the swing mechanism 6 by the controller 18 based on the fixed length signals of the fixed length detectors 16 and 17; The operation mode is as described below.

That is, initially, if the veneer guide members 14 and 15 are at the positions shown by solid lines, the belt-shaped veneer 19 to be carried in via the carry-in conveyor 10 and the veneer carrier 11 is moved to the lower carry-out conveyor 23 side. It will be guided, but eventually, when the tip reaches the position of the fixed length detector 17 and a fixed length signal is transmitted from the fixed length detector 17 to the control mechanism 18, in response to the control of the control mechanism 18, Since the swing mechanism 6 swings the pair of single plate guide members 14 and 15 from the position shown by the solid line in FIG. 4 to the position shown by the dotted line, as shown in FIG. It is cut obliquely by the cutting blade 13 to form a fixed length veneer 19a, and the subsequent strip-shaped veneer 19 is guided to the upper carry-out conveyor 24 side.

Next, when the front end of the band-shaped veneer 19 reaches the position of the scale detector 16 and a scale signal is transmitted from the scale detector 16 to the control mechanism 18, in response to the control of the control mechanism 18, , Swing mechanism 6
Swings the pair of veneer guide members 14 and 15 in opposite directions, so that the strip-shaped veneer 19 is obliquely cut by the cutting blade 13 as shown in FIG. 6 to form a fixed length veneer 19a. At the same time, the succeeding band-shaped veneer 19 is guided to the lower carry-out conveyor 23 side, and thereafter, by repeating the same operation, it is possible to sequentially form a fixed length veneer veneer.

As is apparent from the two embodiments shown in the drawings, the cutting device according to the present invention stops the conveyance of the veneer by the synergistic action of the stab transfer operation of the stab transfer member and the guide operation of the veneer guide member. The cutting can be performed without cutting, and the preceding veneer can be reliably discriminated from the preceding veneer with the cutting blade as a boundary. Since there is no contact with the outer peripheral surface at all, there is no possibility that each member is excessively worn, and since a single plate is stabbed and conveyed, a larger transfer than the case where friction is used is adopted. By exerting force, it is possible to cut a veneer with a great cutting resistance without delay, and furthermore, it is possible to absorb the change in the thickness of the veneer by the change in the amount of sticking. It is possible to set the relative position with the blade according to the thin veneer, and the cutting resistance It is difficult to cause a cutting defect due to a discrepancy between the direction and the direction of the conveying force, and it is almost unnecessary to perform complicated position adjustments to avoid the occurrence of the cutting defect. The difficulties of the new system were also eliminated.

In addition, as in the embodiment of FIG. 1, if another piercing / conveying member that rotates symmetrically is provided in addition to the original piercing / conveying member,
Since the conveying force can be distributed from the separate piercing conveying member, it is more effective for stabilizing the cutting compared to the case where only one side of the veneer is provided as in the embodiment of FIG. Met.

Further, as in each of the above embodiments, if the interval between the outermost peripheral surface of the stab transport member and the cutting blade is set to be smaller than the thickness of the veneer,
Since the conveying force can be reliably applied to the veneer very close to the position where the cutting resistance occurs, it was extremely effective in stabilizing the cutting of any veneer. Even if it is set wider than that, there is no danger that the cutting will not be completely disabled. In particular, as shown in the embodiment of FIG. Since the conveying force can be applied to the sheet, even if the interval is set to be considerably larger than the thickness of the veneer, there is no particular problem in the cutting.

In addition, the roller-like stab transporting member as in each of the above-described embodiments is, for example, a shaft portion and a circular saw-shaped portion having a piercing body as separate bodies, and the latter is fitted to the former (if necessary, a spacer ring is attached) Although it is relatively easy to form, for example, it is not limited to the roller shape, and the illustration is omitted. It is sufficient if there is a large number of piercing bodies for single veneer piercing in a double row around it at a distance from each other and it is possible to pierce veneer and transport it. At the time of installation, the original stab transport member and another stab transport member are not necessarily in a perfect target shape, or the positions of the rows of piercing bodies of the respective stab transport members are the same as in each embodiment. It can be changed arbitrarily from a completely opposing position to a completely separate non-opposing position, Is significant to promote improved the followability to the thickness variation of the veneer, no problem be provided to be displaceable one into contact away to the other direction in accordance with.

In each of the embodiments, a large-sized regrindable cutting blade is used. However, it is replaceably combined with a conventionally known blade holder having various shapes. It is also possible to use a so-called disposable small blade, and in principle, even if the thickness of the veneer is changed, it is not necessary to change the distance from the outermost peripheral surface of the stab conveyance member, but it is necessary. In response, by opening the fixing means when desired, the interval can be changed in response to an extreme change in the thickness of the veneer. The target also includes such an embodiment.

Also, the shape of the veneer guide member is not limited to the shape of each of the above-described embodiments. For example, even if the pair is not always a perfect target shape, the point is that the tip is one side of the cutting blade and the other side. It is sufficient if the shape can guide the veneer alternately to the side, and if necessary, in order to reduce the frictional force and improve the abrasion resistance, plating, stellite, etc. The coating process may be performed, or the pivotal position may be appropriately changed.

It goes without saying that the disconnection signal transmitting means may be any of various conventionally known transmitting means in addition to the transmitting means as in the above-described embodiment, and may be artificially transmitted if necessary.

In addition, since the centrifugal force acts on the veneer stabbed on the stabbed transport member with bending, the higher the processing speed, especially,
There is a tendency to separate from the stab transporting member by its own weight, but if necessary, as in the embodiment of FIG. 4, a comb-shaped peeling member may be provided at an appropriate position to force removal. Or, as in the embodiment of FIG. 1, the pivotal position of the veneer guide is
If it is set on the exit side of the stab transfer member, the single plate guide member forces the detachment, so that there is no need to separately provide a peeling member, which is convenient.

Further, as an application example of the cutting device according to the present invention, the interval between the end portions of each veneer guide member is set to be substantially the same as the thickness of the veneer, and the veneer is fixed to the central portion of the swing position described above. When the plate is passed, the veneer can be cut (divided into two) in the thickness direction, which is useful for another purpose such as forming a pair of veneers having extremely similar properties.

[Brief description of the drawings]

The drawings are for explaining the present invention, FIG. 1 is a side view of the cutting device according to the present invention, FIGS. 2 and 3 are operation explanatory diagrams of the cutting device of FIG. 5 is a side view of another embodiment of the cutting apparatus according to the present invention, and FIGS. 5 and 6 are explanatory views of the operation of the cutting apparatus of FIG. 1,2,11… stab transport member, 3,13… cutting blade, 4,5,14,15
... single plate guide member, 6 ... swinging mechanism, 7 ... single plate detector, 8, 18 ... control mechanism, 9, 19 ... single plate, 10 ... carry-in conveyor, 16, 17 ... fixed Scale detector, 21,22 …… fulcrum shaft, 20,23,
24 …… Conveyance conveyor

Claims (3)

(57) [Claims] 1. An piercing / conveying member having a plurality of piercing members for piercing a single plate in a double row around the main body at arbitrary intervals in an axial direction, and being driven to rotate in a fixed direction by a driving mechanism; A cutting blade fixedly provided at a position where the cutting edge is oriented in a direction opposite to the direction of conveyance of the veneer and the cutting edge is substantially parallel to and close to the outermost peripheral surface of the stab transfer member; Each tip extending from the veneering and conveying member side of the veneer and from the other side of the veneer to the vicinity of the cutting edge of the cutting blade is provided on one surface of the cutting blade. A pair of veneer guide members whose base ends are pivotally supported, and are responsive to a veneer cutting signal so that the veneer can swing between positions where the veneer is alternately guided to the side and the other surface. In each case, swing the veneer guide member at the position for guiding the veneer to one surface side of the cutting blade to a position at which the veneer can be guided to the other surface side of the cutting blade. Veneer cutting apparatus formed by and a rocking mechanism allowed to. 2. A veneer cutting machine according to claim 1, further comprising another sticking / conveying member which is rotatively driven by the driving mechanism in a targeted manner on the other side of the veneer. apparatus. 3. A cutting blade is provided on the outermost peripheral surface of the sticking / conveying member at a distance smaller than the thickness of the veneer.
Or the veneer cutting device according to 2.