JPS5852805B2 - Continuous cutting equipment for veneer veneer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a continuous cutting processing device for veneer veneers used for plywood production, and more specifically, the present invention relates to a continuous cutting processing device for veneer veneers used for plywood production, and more specifically, veneers that are sequentially cut with a veneer lace and then transported are cut at a cutting speed of the veneer lace. In connection with this, unnecessary parts are continuously cut and removed, and the ends of the resulting veneers are threaded (twisted) and kept in a close or nearly close state to form a continuous shape. Concerning devices for sequential and storage.

The initial veneer that is cut from logs using a rotary lace is sent out as a so-called top-peeled veneer with an irregular front and back shape. In other words, these top-peeled veneers have an irregular front-to-back shape and a curled shape as a whole, but in the past, small-width veneers were delivered using veneer lace. A large site and a large number of personnel are prepared to temporarily stack the boards, then a large number of cutting machines are used to cut out unnecessary parts, and only the useful parts are deposited again. The lace and subsequent processing steps were separated and extremely inefficient.

As the performance of veneer lace has improved in recent years, it has required even more labor, time, and space, and the adoption of the traditional treatment process itself is still critical to the plywood manufacturing process. This was a serious defect.

Therefore, in order to eliminate the above-mentioned waste of labor and time, the present applicant passed the veneer, which was previously cut with veneer lace, through a distortion removing device to flatten it. Next, we devised a method and apparatus for processing veneers in which sized veneers were separated into sized veneers and scrap veneers using a sized cutting device, and only the sized veneers were piled up one after another (Japanese Patent Application Laid-Open No. 1983-1999). 43207), I was still not completely satisfied.

In other words, when cutting and eliminating unnecessary parts of the veneer that is cut and sent out from the veneer lace at high speed, the cutting device and the conveying devices before and after it are stopped, or the unnecessary parts are cut off with a sizing cutting device. It is necessary to completely stop the transport device when transporting only the cut surfaces of the parts in close proximity and depositing them.
Substantially, the veneer lace, the sizing cutting device, and the various steps up to conveyance and deposition are not connected in a continuous conveyance configuration, resulting in inconveniences such as a decrease in appendiceal efficiency.

The present invention focuses on the above-mentioned drawbacks in the development process of sloping, and aims to eliminate the drawbacks and eliminate human labor by stopping the conveyance of the veneer in relation to the cutting speed of the veneer lace. Using a cutting mechanism that can perform continuous dimensional cutting without any problem, the veneers that are sent out from the veneer lace at high speed are cut substantially according to the speed, and then the intervals between the veneers are narrowed. In addition, the main body of the present invention is constituted by the connection of a storage device such as threads (traversed and joined together, and further winding the veneer in sequence), which eliminates the conventional inefficiency. Defects in the working form are eliminated,
It has been possible to provide a continuous cutting processing device for veneer veneers that contributes to labor saving after veneer lace.

An embodiment of the present invention that can achieve the above object will be described with reference to the drawings.

In Fig. 1, A shows a veneer race consisting of a pressure plate 1 with a nose bar 1a and a tool post 2 with a blade 2a, which rotates and cuts a raw wood 3, and B shows a guide conveyor that is connected to shafts 4 and 5, respectively. A large group of pulleys 4a, 5 provided
It consists of a plurality of belts 6 wrapped around a, and is positioned with a desired gap along the diagonal guide 2b formed on the upper surface of the tool rest 2, and drives the tilting of the shafts 4 and 5. The belt 6 is configured to rotate in the direction of the arrow as a shaft.

C indicates another group of pulleys (not shown) provided on the shaft 5 at the end of the guide conveyor B, and another group of pulleys 7a, 8, 9a provided on the shafts 7, 8, 9°10.

10a shows an upper guide conveyor made up of a plurality of belts 11 that are turned around, and a lower guide conveyor D is made up of a plurality of belts 14 that are turned around a group of pulleys 12a and 13a provided on a shaft 12.13. , each of the conveyor groups B,
C and D are prepared so that the veneer S which is cut with a veneer lace A, curled and sent out is flattened and sent out to the next process.

Also, the cutting speed of veneer lace (40 to 120 during normal cutting)
m/#), the conveying speeds of the guide conveyor B and the next upper and lower guide conveyors C and D are synchronized by the drive source G used in the known veneer reeling device.

Alternatively, if the maximum cutting speed with the veneer race is limited to a certain value, the guide conveyor B, the upper and lower guide conveyors C,
It is also possible to transport D and the devices following it at slightly higher speeds, which eliminates the need for synchronization control and allows for a relatively simple device.

Furthermore, since the pressure plate 1 and the turret 2 are moved in the direction of the raw wood 3, the guide conveyor B and the upper guide conveyor C follow the movement of the pressure plate 1 and the turret 2.

Although the following means is not shown, for example, in the case of the guide conveyor B, it is fixed to the tool rest 2 by appropriate means, and the upper guide conveyor C is a well-known means for moving the pressure plate 1 or the tool rest 2. The shaft 5.8 can be moved horizontally or vertically using the rotation of the threaded rod. For example, a direction changing mechanism consisting of a head gear, a rack, a pinion, etc. can be used to follow this direction.

A pair of upper and lower rollers 15° 15a are disposed at the ends of the upper and lower guide conveyors C and D in the discharge direction, and are configured to clamp and convey the veneer S cut by the veneer lace A and conveyed.
On the carry-in side, there is an arm 17 that swings depending on the presence or absence of the veneer S to be conveyed via the veneer detection roll 16.
A veneer detection device 18 is constructed by arranging a large number of veneer detectors 18b perpendicular to the conveying direction and having contacts 18a such as limit switches or photoelectric switches that are configured to be capable of FF operation and signal cutting signals.

Further, on the unloading side of the rollers 15, 15a, the blade edges contact the exit circumferential surfaces of the pair of rollers 15, 15a alternately in response to a cutting signal transmitted from the veneer detection device 18, thereby cutting the veneer S. The cutting edge of the cutting blade 19, which is equipped to distinguish unnecessary parts such as the leading edge and the trailing edge and make continuous cutting using the conveying force of the veneer S, is directed in the direction opposite to the conveying direction. It is to be erected.

That is, the contacts 18a of the veneer detector 18b are connected in parallel and in a closed state, and the veneer S is detected via the veneer detection roll 16 and the arm 17, and all the contacts 18a When the circuit is closed, a front edge detection signal of the veneer S is transmitted, and this signal is applied to the operating mechanism controller 21 that operates an operating mechanism 20 such as a cylinder connected to the cutting blade 19. The edges are cut.

Further, if even one contact 18a is closed, a cutting signal for the trailing edge of the veneer S is issued, and the cutting blade 19 rotates.
Cutting of the trailing edge is performed.

When cutting the front and rear edges, it is preferable to adjust a well-known timer or the like each time through a cutting circuit so that some unnecessary parts remain.

FIG. 2 shows cutting of the front edge. The cutting blade 19 turns while pressing the veneer S against the surface of the lower roller 15a.
Cutting is performed by the feeding force of the veneer S, and then the effective portion advances on the upper surface of the cutting blade 19, and the waste sb is removed downward.

Although not shown, cutting of the trailing edge is performed by rotating the cutting blade 19 toward the upper roller 15 side (the side indicated by the dotted line in FIG. 2), and the trailing edge is also cut below the cutting blade 19. be excluded from

The effective veneer Sa from which the front and rear edges have been removed by performing the above-mentioned cutting operations one after another is sent out without any interruption in its conveyance.

Further, at the rear of the cutting blade 19, there is provided an intermediate conveyor E consisting of shafts 22, 23 (a belt 24 which is wound around a group of pulleys 22a, 23a provided thereon), and the cutting blade is placed at an appropriate position on the belt 24. At step 19, the front and rear edges are cut to size, and the veneer passes through a limit switch or a photoelectric switch that detects the tip Sc and end Sd of the veneer Sa and differentially sends a detection signal. It is equipped with a detector 25.

A pair of actuating rods 2 F are located in front of the veneer passage detector 25 and are actuated alternately in response to a veneer passage detection signal, and move so as to sequentially twill the passing veneer Sa with the yarn 26.
7, G indicates an intermittent drive mechanism 28 from the detection signal Q from the veneer passage detector 25.
This figure shows an intermittent carry-out conveyor that conveys the veneer Sa to be cross-crossed by packing the ends of the veneers Sa closely or close to each other.

That is, as shown in FIGS. 1.5 and 6, the coupling device F is provided at both ends of the connection between the intermediate conveyor E and the intermittent delivery conveyor G, and a set of operating rods 27 connects the yarn 26. A hollow portion 27a is formed for passage, and its tip extends above and below the intermittent delivery conveyor G.

Furthermore, the arms 27 and helices 29, which are extended by bending the distal end of the operating rod 27 into a substantially "F" shape, are connected by pins 30, and a piston rod 31 such as an air miller is connected to these. The reciprocating mechanism 31a is configured to perform a reciprocating operation, and the operating rod 27 is thus arranged to swing up and down about a shaft 31b.

26a indicates a bobbin around which the yarn 26 is wound;
7a and are respectively drawn out from the feeding opening 27c at the tip.

This veneer Sa coupling device F is given forward and backward motion by the detection signal from the veneer passage detector 25, and is operated so as to alternately replace the operating rod 27 for each movement. Through the operation, the two yarns 26 are twilled so as to block the passage of the veneer Sa, and as the veneer Sa is tied, the yarns 26 are unwound one after another and are twilled between the veneers Sa. It is something to multiply.

Furthermore, as shown in FIGS. 1 and 5, the intermittent delivery conveyor G has a plurality of belts that are looped around a group of idle pulleys 23b provided on the shaft 23 and a group of pulleys 32a provided on the other shaft 32. 33, and the shaft 32t is connected to the intermittent drive mechanism 28 as described above.

That is, when the tip Se of the passing veneer Sa is detected by the veneer passage detector 25, a tip detection signal is transmitted.
The intermittent drive mechanism 28 is actuated by the signal and starts rotating at the same speed as the veneer Sa being sent out, and
When the distal end Sd is detected, a distal end detection signal is transmitted,
The intermittent delivery conveyor G is configured to stop rotating.

By the above-mentioned operation, the veneers Sa are conveyed on the intermittent delivery conveyor G with the leading end Sc and the end end Sd tightly packed or close to each other.

Although the signal circuit described above can sufficiently achieve its purpose by turning the contacts ON and OFF if there is only one single-plate passage detector 25, it is preferable to use a timer circuit such as a timer for the signal that is specifically transmitted. By connecting the veneer Sa, the intermittent delivery conveyor G rotates with a slight delay after detecting the tip end Sc, and stops after detecting the end portion Sd. Therefore, the stopping position of the veneer Sa is set at the end. Part Sd is intermediate conveyor E
The veneer Sa comes off from the veneer and stops at a position where it has been fed a little extra by the intermittent unloading conveyor G. By doing this, the veneer Sa stops in front of the joining device F (in the squeezing direction) and is moved to the next veneer. They wait for the plate Sa to be fed.

Therefore, the twilling is each veneer (Sa......)
The actuating rod 27 is actuated each time at a position where the veneer Sa is not continuous, and the timing is well-timed. This results in a combined state.

The discharging direction end G of the intermittent discharging conveyor G is a continuous veneer group Sa connected by the threads 26.
A winding device H is arranged to wind up sequentially.

34 is a touch roll and belt 35 is an intermittent delivery conveyor G
The hook is rotated by a pulley (not shown) provided on the shaft 32 of the veneer, and is configured to rotate in synchronization with the conveyance of the veneer Sa.

Thereby, the veneer group Sa can be wound up in the same manner as core-stripped veneers cut into strips using veneer lace.

Fig. 3 shows a folding device (2) which replaces the winding device H and is designed to fold a group of veneers Sa.The veneers are sandwiched between a pair of rollers 34a, moved back and forth in the horizontal direction, and stored one by one. It is something to do.

In this case, there is an advantage that the device can be simpler than in the case of winding.

Figure 4 shows a method for transporting and storing veneers Sa in stages on a multi-stage conveyor J. Each time each stage becomes full of veneers Sa, control is performed so that the veneers are transferred to the next stage, and the distribution is This can be easily done by providing a cutting machine (not shown) in front of the body 36 that cuts the veneer Sa in accordance with the length of the multi-stage conveyor J.

In the configuration described above, when the log 3 is cut with the veneer lace A, the shape of the log 3 (corresponding to this, the initial G of the cutting is uneven and the veneer S has discontinuous parts such as cracks or unnecessary parts such as thick and thin parts). It is sent out in a state that is curled toward the surface (upper surface).

The veneers S that are sent out one after another in this way enter the guide conveyor B and the diagonal guide 2b of the tool post 2, and then are transported by the upper and lower guide conveyors C and D in the direction of the arrow.

Next, when the veneer S passes between the lower guide conveyor D and the veneer detection roll (at this point, its shape is detected as described above, and the cutting edge is placed on the circumferential surface of the exit side of the pair of rollers 15, 15a). The cutting blades 19 that are in contact with each other alternately rotate to distinguish unnecessary parts such as the front and rear edges, and continuous cutting is performed using the feeding force of the veneer S, so that the effective veneer Sa moves on the intermediate conveyor E. They will be carried out one after another.

Next, when the tip Sc and end Sd of the effective veneer Sa are detected by the veneer passage detector 25, the intermittent conveyor G placed in front of it rotates or stops, thereby removing each veneer. The front and back of the Sa are packed tightly or close together for transport.

Furthermore, at the same time, threads 26 are twilled between the fed veneers Sa by veneer joining devices F provided on both sides of the connecting portion between the intermediate conveyor E and the intermittent discharge conveyor G, The bond between the veneers is maintained.

As described above, the veneer group Sa...
is connected to the rear Q of the intermittent discharge conveyor G, for example, a storage device such as a winding device H1, a folding device 2, or a multi-stage conveyor J (these are stored in a continuous form).

As is clear from the foregoing, according to the present invention, various steps after veneer lace can be connected in series without requiring any human labor, and veneer processing can be made continuous.

In addition, the veneer, from which unnecessary parts have been removed using a sizing cutting device that can perform continuous cutting in relation to the cutting speed of the veneer lace, is strung with threads and maintained in a close or nearly close state. Therefore, a strong bond can be obtained, and storage such as winding or folding can be performed stably, and in this way (when inserting strained and stored veneers into a dryer, it is possible to improve the filling efficiency of the dryer. Together with this, the initial objective as stated at the beginning can be well achieved.

[Brief explanation of the drawing]

The drawings show an embodiment of the continuous cutting device for veneer veneers according to the present invention, and FIG. 1 is an overall side view, FIG. 2 is a side view of the veneer cutting device, and FIG. 3.4 The figure is an explanatory side view of another embodiment in the storage stage of Fig. 1, Fig. 5 is a plan view illustrating the veneer joining device, and Fig. 6 is an explanation of the operation of twilling by the veneer joining device. Fig. 7 is an explanatory diagram of the threads (thus, the veneer is joined to the veneer). A: veneer lace, B: guide conveyor, C: ...Upper guide conveyor, D...
Lower guide conveyor, E...Middle conveyor, F...
...Coupling device, G...Intermittent discharge conveyor,
H... Winding device, ■... Folding device, J... Multi-stage conveyor, S......
Single plate, 15.15a...Roller, 18...
...Single plate detection device, 19...Cutting blade, 25.
... Single plate passage detector, 26 ... Yarn, 2
7... Operating rod, 28... Intermittent 1 drive mechanism.

Claims (1)

[Claims] 1. In order to convey the veneer sent out from the veneer lace in a direction perpendicular to the fibers, a conveyor mechanism such as a conveyor is installed on the lower side of the veneer lace in the veneer conveyance direction, and a plurality of conveyors are installed in the direction orthogonal to the veneer conveyance direction. The unit has a veneer detector such as an array of limit switches, and is disposed on the downstream side of the veneer conveyance direction of the conveyance mechanism in order to distinguish between an effective portion and an unnecessary portion of the veneer conveyed by the conveyance mechanism. a plate detection device, a pair of upper and lower rollers arranged perpendicularly to the veneer conveyance direction, the blade edges of which are oriented in the opposite direction to the veneer conveyance direction, and the blade edges alternately touch the exit side circumferential surfaces of the pair of rollers; The veneer detection device has cutting blades that can be rotated alternately in one direction by an operating mechanism such as a fluid cylinder, and the veneer detection device cuts out unnecessary parts of the veneer based on the signal from the veneer detection device. A continuous veneer cutting mechanism is installed on the downstream side in the transport direction, and a limit switch, etc. is installed near the continuous veneer cutting mechanism to detect the passage of valid veneers being carried out from the continuous veneer cutting mechanism. A veneer passage detector and an actuating mechanism such as a fluid cylinder (a one-to-one pair that is oscillated) alternately guide a plurality of threads stored at appropriate locations to the front and back surfaces of the effective veneer. The veneer continuous cutting mechanism has a plurality of sets of operating rods, and is configured to traverse a plurality of threads on the effective veneer carried out from the veneer continuous cutting mechanism based on the signal from the veneer passage detector. and a veneer joining device disposed on the downstream side in the veneer conveyance direction, and the continuous cutting of the veneers in order to bring together the ends of each effective veneer to which threads have been sequentially threaded by the veneer joining device. An intermittent carry-out mechanism such as an intermittent carry-out conveyor is installed on the lower side of the mechanism in the veneer conveyance direction, and a unit of the intermittent carry-out mechanism is used to store effective veneer groups assembled in a continuous manner by traversing with threads. A continuous cutting processing device for veneer veneers taken from a veneer storage device such as a winding device installed on the downstream side in the board conveyance direction.