JPS60242005A - Veneer lathe - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to veneer lace.

With conventional veneer laces, power was supplied only through the chuck for holding the logs, which was located far away from the cutting tool, which is the main source of cutting resistance, which resulted in logs being frequently damaged. Therefore, the present applicant previously proposed a new type of veneer lace configured to supply at least a portion of the power required for cutting to the outer peripheral surface of the raw wood via a power supply roll provided near the cutting tool. The new veneer lace has achieved a certain degree of effectiveness in avoiding log damage, but since indentations are formed by the power supply roll on all the veneers being cut, it is difficult to use, for example, for middle plates, etc. Although there is no problem in practical use, there is a risk that the applications of the cut veneer may be restricted, such as not necessarily being fully suitable for applications that require relatively high quality, such as for surface use, and further improvement is required. There was room to add.

The present invention makes effective use of the principle of the new type of veneer lace, and provides effective power supply from the outer circumferential surface of the raw wood and effective suppression of the outer circumferential surface of the raw wood, depending on the use of the veneer. The present invention provides a veneer lace that has been further improved so that it can be cut alternately at appropriate times, thereby contributing to the rationalization of the veneer cutting process in plywood factories.

The present invention will be described in more detail below along with an example of implementation illustrated in the drawings.

FIG. 1 is a schematic side view for explaining the veneer lace according to the present invention, and FIG. 2 is a partial front view of FIG. 1.

In the figure, reference numeral 3 denotes a cutting blade, which is attached to a lead blade 2 that is reciprocated in the core direction and the far direction of the log 1 by the action of a feed screw I4. As the lead white 2 moves toward the core of the raw wood 1 as it rotates, veneers are sequentially cut from the raw wood 1.

Reference numeral 5 denotes a support stand, which is swingably attached to the lead plate 2 via a hair ring 4, and is attached to the lead plate 2, which will be described later.
12. Supports the power supply roll 15, etc. The support base 5 is selectively swung as required by the operation of an actuating device 7 consisting of a fluid cylinder or the like, from the lowered position where it abuts the stomper 6 attached to the lead white 2.
The power supply roll 15 is separated from the outer peripheral surface of the log l by rising by an appropriate distance.

A large number of protrusions 10 are formed on the outer periphery of a power supply member 11, which will be described later, to ensure that the power supply roll 15 supplies power appropriately.

Reference numeral 12 is a single-piece brain sharper, and a plurality of pieces are attached to the support stand 5 at appropriate widths from each other, forming a shape with gaps of appropriate width at arbitrary distances as a whole, and cutting the raw wood. Press near the boundary between the plate and the veneer.

Reference numeral 15 denotes a power supply roll, which includes a shaft 9 pivotally attached to the support base 5, and a plurality of narrow roll-shaped power supply members 11 fixed to the shaft 9 at appropriate intervals in the axial direction. The power supply member 11 is provided so as to be able to press against the outer circumferential surface of the raw wood 1 through the gap between the blanksher bars 12, and supplies at least a portion of the power required for cutting to the raw wood 1.

) 8 is a drive Jj1m, which includes a drive source 8 such as a motor attached to the support base 5, a drive transmission member 17 such as a chain, etc., and drives the power supply roll 15 in the direction of the arrow shown in the figure.

Reference numeral 18 is a blank shaper having no gap, and is a distal end portion of a slide member 19 that is guided by a guide 20 and selectively reciprocated back and forth in accordance with the operation of a reciprocating device 21 consisting of a fluid cylinder or the like. When the power supply roll 15 is separated from the outer peripheral surface of the log 1, it presses the vicinity of the boundary between the log and the veneer instead of the pressure roller 12 having the iN gap.

The illustration of the power supply mechanism connected to the chuck is for convenience E.
Although this has been omitted, there is a power transmission force between the chuck and the drive source, such as a motor, due to changes in voltage.
The structure is such that the capacity of the power to be supplied to the raw wood can be arbitrarily set at any time by using a means such as interposing a transmission force adjusting member such as a flanch brake that can perform A-joints.

The veneer lace according to the present invention is constructed, for example, as described above, and is made of relatively low-quality veneer from the irregularly shaped outer circumferential portion of the raw wood 1, as is the usual method.

For example, for the middle plate? When cutting the blade plate, as illustrated in FIG. The power supply roll 15 is driven by the drive mechanism 16 in the direction of the arrow shown in the figure in a state where it is oscillated and lowered to the position where it contacts the striker damper 6, and the power capacity is further supplied to the log l via the chunk 13. Cutting is started by setting the power capacity to be less than the power capacity required to cut the medium veneer by the amount of power required for cutting and copying.

When the white lead 2 moves a desired amount toward the core of the log 1 by the action of the feed screw 14 as the log 1 rotates, it eventually shakes with the power supply member 11 of the power supply roll 15, and the sharper 12 cuts the outer peripheral surface of the log 1. At the same time, cutting is performed by the cutting blade 3 to sequentially cut the medium plate veneer to a desired thickness, but cutting resistance is generated by the cutting blade 3 and the pren sharper 12. The power supply member 11 of the power supply roll 15 located near the pole of the part
Since at least part of the power required for cutting is supplied from the chuck 13, a more stable power supply is achieved compared to the conventional case where power is supplied only from the chuck 13, and damage to the log 1 is prevented or greatly reduced. It is extremely effective because the pressure is reduced by the pressure par 12 during cutting, which suppresses the area near the boundary between the raw wood and the veneer. There is no risk that the cutting surface will deteriorate significantly compared to the conventional method, and although the veneer to be cut will have impressions caused by the power supply member 11, there will be no damage to the surface of the intermediate veneer hidden inside the plywood. For example, if the veneer is of relatively low quality, the presence of indentations does not make any difference in practical use.

Next, as per Fuho, when cutting a relatively high quality veneer, such as a surface veneer, after all defects have been removed from the outer periphery of the raw wood, cutting is temporarily stopped and the process shown in Fig. 3 is carried out. As shown in FIG.
JJ: While raising the power supply roll 15 to isolate it from the outer peripheral surface of the log l, by operating the reciprocating actuator 21,
The pressure parr 18 is advanced to a predetermined position via the slide member 19, and the power capacity to be supplied to the log 1 via the chuck 13 is set to a capacity greater than the power required to cut the surface veneer. In addition, the amount of movement of the white lead 2 in the direction of the core relative to the light of one revolution of the chuck 13 is changed to correspond to the thickness of the surface veneer, and then the cutting that has been stopped is restarted.

As the log 1 rotates, the white lead 2 moves toward the core of the log 1 by a desired amount, and eventually the pressure par 18 is brought into contact with the outer circumferential surface of the log 1. The surface veneer of the desired thickness is sequentially shaved, but the power supply roll 15 is
Since the power supply member II is isolated from the outer circumferential surface of the veneer being cut, no impression is formed by the power supply member II on the veneer being cut, and during cutting, the pressure member 18, which has no gap,
As a result, the boundary between the raw wood and the veneer is suppressed near 4 = j, so the cutting surface of the veneer is also similar to that of cutting with the veneer lace from 1B, and as a result, There is no possibility that the use of the cut veneer will be restricted.

In addition, the power supply in this case is only from the chuck, but as is well known, the thickness of relatively high-quality veneers such as surface veneers is limited due to the effective use of raw wood. It is usually thinner than the thickness of relatively low-quality veneers such as boards, and the cutting resistance is reduced accordingly, so the probability of damage to the raw wood is low. There is no risk that the damage will be worse than if it were cut by a machine.

Furthermore, as the diameter of the raw wood is gradually reduced, if defects such as cracks and knots appear in the raw wood and it becomes unsuitable for cutting surface veneers, etc., cutting will be stopped for a month and the setting conditions for each component will be changed again. 1st
After changing to the state illustrated in the figure, cutting may be restarted and the intermediate plate veneer etc. may be cut again.

Incidentally, for convenience, the illustrations of the known cutting tools for both the center and the sides are omitted, but they may be provided as needed and used at any time.

Although not shown in the drawings, a log drive roll that is rotatably driven and has a large number of protrusions attached to its outer periphery is provided at a position opposite to the outer circumferential surface of the log, which corresponds to the part that becomes waste on the outside of the side shoplifting machine. It would be even more effective if power was supplied from the raw wood drive roll as well.

In addition, the configuration of each pressure par/drive mechanism φ separator is not limited to the form of the moving means of the pressure par, advance/retreat direction, etc., and can be modified in various ways, but in any case, as in the example, If a large number of protrusions are formed on the outer periphery of the power supply member and used for the power supply roll, not only can power supply be performed appropriately, but also cutting can be performed. It is effective because it forms puncture wounds with protrusions on the i-board to give it flexibility, making it easier to process the veneer in the subsequent process, and it is more effective than simply making the power supply member in the form of a narrow roll. is also preferable.

As is clear from the following, according to the Peña lace according to the present invention, effective power supply from the outer circumferential surface of the log and effective suppression of the outer circumferential surface of the log can be alternately carried out in a timely manner. Accordingly, damage to the wood can be prevented or significantly reduced while avoiding the possibility that the use of the cut veneer will be restricted, which is extremely effective.

[Brief explanation of drawings]

The drawings are for explaining the present invention, and FIG. 1 is a side schematic explanatory view for explaining the veneer lace according to the present invention, FIG. 2 is a partial front explanatory view of FIG. 1, and FIG. FIG. 3 is a schematic side view for explaining another setting state of the veneer lace illustrated in FIGS. 1 and 2. FIG. l... Log, 2... White lead, 3... Cutting knife, 5
... Support stand, 7... Actuation device, IO... Protrusion,
DESCRIPTION OF SYMBOLS 11... Power supply member, I2... Partition-shaped pressure par 115-φ power supply roll, 16... Drive mechanism, 18... Pressure par with no gap Patent applicant Co., Ltd. Meinan Works Diagram 1B

Claims (1)

[Claims] A power supply roll is provided with a presher bar having a gap of an appropriate width at each arbitrary distance, and a power supply roll having a plurality of narrow roll-shaped power supply members fixed to a shaft at appropriate intervals in the axial direction. The power supply member is provided so as to be able to press against the outer peripheral surface of the raw wood through the gap between the pressure pars, and further includes a drive mechanism that drives the power supply roll and an isolation mechanism that isolates the power supply roll from the outer peripheral surface of the raw wood. However, when the power supply roll is isolated from the outer circumferential surface of the log,
Instead of the pressure parser having the gap, a pressure parser with no gap is arranged to press the area near the boundary between the raw wood and the veneer, and is movable forward and backward, thereby effectively generating power from the outer circumferential surface of the raw wood. A veneer lace characterized by being configured so that supplying and effectively suppressing the outer circumferential surface of raw wood can be performed alternately in a timely manner.