JPS59192518A - Veneer cutter - 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 uses veneer lace to cut a sheet-like veneer veneer into a predetermined length using a thin plate obtained by turning raw logs as raw materials, or The present invention relates to a veneer cutting device that selectively cuts a sized deck of maximum effective length from irregularly-sized irregular veneers.

In recent years, the automation and speeding up of veneer production lines in plywood manufacturing factories has progressed at the same time. There has been a strong demand for a cutting device that uses a large number of blades to quickly and easily perform so-called setting, in which the cutting edges of the blades are aligned and placed in the device.

In other words, a cutter roll with a cutter on the upper side and an anvil coated with an elastic material such as rubber below the cutter roll. Problems such as digging up occur.

The present invention was completed in response to the demands of the above-mentioned industry, and in order to perform the above-mentioned veneer process in a combined manner, it is equipped with a conveyor for carrying in veneers and a receiver having receiving blades arranged opposite to each other under the veneer conveyance path. A swingable cutting blade in which a blade device is arranged close to the end of the conveyor, and a linear cutter made of piano wire or the like stretched by a tension device is arranged in alignment with the tip of the receiving blade. A conveyor for carrying out the veneer is arranged on the veneer discharge side of the device and the cutting blade device, and the veneer is cut to the required size, and at the same time, the veneer immediately after being cut is distributed vertically.

Examples will be described below based on the drawings. FIG. 1 is a side view of one embodiment of the present invention, showing the main parts of the veneer cutting mechanism and the conveyors before and after it, and showing the blade receiving device 10 and the cutting blade device 20 in cross section. .

FIG. 2 is a perspective view of the main parts of the cutting blade device 20.

1 is the loading conveyor, which is composed of multiple belts,
It is driven in the direction of arrow A by an electric motor (not shown). 3
is the pulley at the end of the incoming conveyor. Reference numeral 2 denotes a veneer presser that is wound in contact with or very close to the belt surface that forms the veneer conveyance surface of the carry-in conveyor 1, and the veneer presser 2 is wound from above and below to carry in the veneer by the carry-in conveyor and the veneer presser. The veneer is conveyed in the direction of arrow A while being held in place while preventing the veneer from meandering.

Reference numeral 4 denotes a pressure pulley placed above the pulley 3 placed at the terminal end of the conveyor;
The veneer V is placed on the veneer V or suspended with a slight gap, and is held movable up and down.
2 is held between the top and bottom and transported in the direction of arrow A. Further, the pressure pulley 4 may be elastically held in the vertical direction of arrow B by a pressure mechanism 6 formed of a spring, an air cylinder, or the like schematically shown above. In addition, the pressure pulley 4, which has an integral structure in which a plurality of pulleys are attached to a common shaft, is configured to be movable up and down.
The pulley may cooperate with the pulley 3 to clamp the veneer from above and below using its own weight. Furthermore, it may be constructed in the form of a continuous roller in the width direction, or the outer circumferential surface of a pulley, roller, etc. may be coated with an elastic body such as rubber to provide a frictional effect or an elastic pressing action.

Reference numeral 5 denotes an Mm conveyor, which carries in a plurality of string belts, for example, and connects a pulley 3 at the end of the conveyor 1 and a blade receiving device 1 to be described later.
It is wound between small-diameter pulleys 7 arranged on the machine frame 12 of 0 to form a substantially horizontal veneer conveyance path following the veneer conveyance path of the carry-in conveyor, and is driven in the direction of arrow A like the carry-in conveyor. Ru.

Reference numeral 10 denotes a receiving blade device, which includes a machine frame 12 installed vertically near the terminal end of the carry-in conveyor 1, and receiving blades 11 and 11' disposed on the machine frame.
It is composed of guide plates 15, 15' and the like.

The machine frame flexure is a box-shaped structure made of cast metal or steel plate, and is installed near the end of the carry-in conveyor, and the approximate middle part in the height direction, which corresponds to the height of the veneer transport surface of the conveyor, is vertically bent so that the veneer can pass through. thick (opened, with guide plates on both upper and lower sides)
', receiving blades 11 and 11' are provided, respectively. The guide plates 15 and 15' are attached above and below the machine frame 12 up to approximately the middle position in the shape of protruding near the pulley 3 at the end of the carry-in conveyor on the veneer carry-in side and the pressure pulley 4 side. The guide to the blade device 10 is facilitated. Note that the guide plate 15 arranged on the bottom side is preferably arranged so that its upper surface is slightly lower than the veneer conveying surface of the carry-in conveyor 1.

11,]1' is a receiving blade, and a hard wear-resistant metal such as stellite is attached to the tip.The lower surface of the upper-mounted receiving blade 11' has the same level of force as the lower surface of the guide plate 15', which is also placed on the upper part. is arranged so that it is slightly above, and the upper surface of the receiving blade 11 arranged at the lower part is the same as the guide plate 1 arranged at the lower part.
5. Place it so that it is on the same level as the top surface or slightly below it. Moreover, its tip is the swing locus of a linear cutter 21, which will be described later. Adjust the adjustment bolt 16 so that it is on the line.
(The adjustment bolt on one side is not shown) etc., the tip is adjusted and held tightly to the machine frame 12. 13.13
' is a receiving blade 11. The mounting of the receiving blade 11' is a bolt.

Note that the guide plate 151 arranged on the blade receiving device 10.
15' is omitted and the lower surface is handled by the auxiliary conveyor 5, etc., while the opening of the machine frame 12 is configured to have a large opening on the carry-in conveyor 1 side and gradually widen toward the receiving blades 11 and 11'. There is also.

Reference numeral 20 denotes a cutting blade device, which is arranged close to the veneer discharge side of the receiving blade device 10, and as shown in the perspective view of FIG. It is composed of a tension device 26, a guide vane 23, and a swing mechanism 28N that swings the guide vane together with a linear cutter about a fulcrum shaft 22.

The guide vane 23 is formed of a thin steel plate or the like into a box shape with an acute-angled tip, and a guide arm 25 is provided protruding near the left and right ends of the acute-angled tip, and is arranged, for example, upright at the tip of the arm. A swinging mechanism 28 composed of a fluid cylinder 25 C and the like is locked. 21 is a linear cutter with a long cross section, which is usually used when inserting piano wire or a bundle of electric wires into electrical piping. A flattened metsenger wire or a strangely shaped PC steel J1 is used, and as shown in Fig. 2, one end is attached to the guide arm 23 or the guide arm 25, and a seat is attached to the left and right guide arms. By communicating the provided guide hole 21H, the sharp tip edge 23E of the guide vane 23
They will be placed very close to and parallel to each other. Furthermore, the linear cutter 21 has a freely rotatable guide roller 24 arranged in a substantially horizontal direction on the outside of the guide arm 25.
Through-holes 23 are formed at the left and right ends of the guide vane by rotating the guide vane tip edge 23 and turning at right angles to the guide vane tip edge 23 E.
The tension device 261 disposed near the end of the guide vane and constituted by, for example, a fluid cylinder is connected to IL and pulled in the direction of arrow G with a predetermined tension.

The box-shaped guide vane is rotatably supported in the force direction indicated by arrow D' via appropriate bearings from a fulcrum shaft 221 provided near the end of the left and right ends, which protrudes left and right. The entire 23 is constructed so as to be able to swing in the direction of the arrow, integrally with the linear cutter and the like.

Further, the linear cutter 21 is stretched parallel to the sharp tip edge of the guide vane with a predetermined force, and is swung in the direction of the arrow C by the vertical movement of the m-swing mechanism 28 in the direction of the arrow C. , At that time, the receiving blades 1 are disposed vertically oppositely in the receiving blade device 10 on the locus Q drawn by the tip edge of the linear cutter configured in a straight line.
1.11' are arranged so that their leading edges coincide with each other. In reality, it is best to leave a very small gap between the two leading edges.

Reference numerals 32' and 33' refer to pulleys at the starting end of the belt for holding down the veneer and the unloading conveyor, which will be described later, and are freely rotatable by bearings, etc., at appropriate locations in the grooves formed in the approximate middle of the guide vane in the direction in which the veneers travel. to be drilled. The pulleys are preferably arranged so that the pulley 33' for the lower veneer presser 33 of the unloading conveyor is slightly lower than the pulley 32' for the upper conveyor 32. An example of the cutting blade device 20 has been described above. For example, the guide vane 23 has an acute tip edge 23.
Place a small diameter roller over the entire length or partially on E.
The roller is buried rotatably to expose a part of its outer circumferential surface, and a thin conveyor belt is wound between the roller and a pulley (not shown) arranged in the direction of arrow E-F to reach the part. In some cases, the structure is such that the veneer is quickly transported in the direction of the arrow E-F. In addition to the illustrated fluid cylinder, the swinging mechanism 28 of the guide vane may employ a cam or other mechanism capable of moving up and down in the direction of arrow C, and may also be arranged either forward or backward in the veneer transport direction. It is also possible, for example, to attach a fluid cylinder to the tip of a swinging lever that is pivoted on the fulcrum shaft 22 that protrudes to the left and right of the idle platform 723, and to directly rotate the shaft in the force direction indicated by the arrow D'. It is also possible to configure it as follows.

Reference numeral 30 denotes a carry-out conveyor installed above and below the cutting blade device 20, starting near the blade receiving device 10; in FIG.
A conveyor with two stages in total is illustrated.

Reference numeral 31 denotes a lower conveyor, which is placed below the cutting blade device 20 by means of a plurality of belts with the starting end as close as possible to the machine frame 12 of the blade receiving device 10, and is arranged approximately horizontally, and is moved in the direction of arrow E by an electric motor (not shown). Driven. 33 is a veneer presser of the lower conveyor, and is arranged along the lower conveyor 3 structure starting from a pulley 33' which is placed on the guide vane 23 in contact with the veneer conveying surface of the conveyor or with a slight gap; It is driven in the direction of arrow E.

Reference numeral 32 designates an upper stage conveyor, which is wound with a plurality of belts diagonally upward starting from a pulley 32' disposed on the guide vane 23, and is driven in the direction of arrow F by an electric motor (not shown). 34 holds the veneer of the upper stage conveyor, touches the veneer conveyance surface of the upper stage conveyor 32, or has a slight gap therebetween, and connects a pulley disposed near the machine frame 12 of the blade receiving device 10 above the guide vane 23 to the starting end. It is arranged along the upper stage conveyor and is driven in the direction of arrow F, which is the veneer transport direction. The conveyors disposed above and below are arranged so that the starting ends of the lower stages are opened upward and downward to facilitate the introduction of the veneer.

Note that the carry-out conveyor 30 is not limited to two stages (upper and lower stages); for example, in the case of useful cutting of short veneers, etc., the upper stage conveyor shown in FIG. There are methods such as installing a dust chute in an irregularly shaped part that is made of veneer.

As above, the carry-in conveyor 1, the pressure pulley 4, the blade receiving device 10
, a cutting blade device 20, and a carry-out conveyor 30+c will be described with reference to FIG.

In the figure, the cutting blade device 20 operates downward to cut the veneer v1.
is cut into specified dimensions, and the veneer ■1 is transferred to the lower conveyor 311.
From there, it is being transported in the direction of arrow E. On the other hand, the leading end of the subsequent veneer v2 that has been cut moves downward and touches the upper surface of the stationary guide vane 23, and the trailing part passes through the blade receiving device 10, and is transformed into a carry-in conveyor and straddles the pulley. 3 and pressure pulley 4 as shown by arrows A and F.
From this state, the transport progresses further,
When the veneer 2 traveling on the upper conveyor has traveled a predetermined distance from the linear cutter 21, a cutting signal is sent to the cutting blade device 2.
The swinging mechanism 20 of No. 0 operates upward, and the linear cutter swings together with the guide vane 23 in the upward direction of the arrow. The veneer v2 is lifted by the guide vane at the receiving blade position, and is further tensioned with a predetermined tension, and a linear cutter that has become a rigid cutting blade and a receiving blade 11 disposed above the receiving blade device.
When the veneer is cut at a predetermined position by ', and the guide vane 23 closes the space between the receiving blade part and the upper conveyor 32, the lower conveyor 31 side of the same number is left wide open, and the tip of the veneer after the cutting is cut. It will lead you to the bottom.

Thereafter, each time the veneer passes a predetermined dimension at the cutting position, the cutting blade device 20 repeats vertical swinging motion.

Therefore, when veneers of a predetermined size are cut from a long veneer veneer, they can be stacked alternately in upper and lower rows with the same number. Next, in the case of relatively short irregular length veneers that have irregular portions on the front and rear edges, for example, if the lower conveyor 31 in FIG. 20 is moved upward to the imaginary line state shown in the figure and placed on standby, and as soon as the veneer is carried in and the irregular front end portion of the veneer passes the tip of the receiving blade 11, the cutting blade device is operated downward. be. The front end portion is cut by the linear cutter 21 and the receiving blade 11, transferred to a lower conveyor 31 serving as a waste conveyor, and carried away in the direction of arrow E.

On the other hand, the veneer, which will become the product part with the unnecessary part at the front end removed, is transported in the direction of arrow F with the irregular part at the rear edge connected, and the useful part, which will become the product, and the waste are separated. When the branching point of the irregular rear end portion reaches the tip of the receiving blade 11, the cutting blade device, which is in a standby state below the solid line in FIG. It is divided into useful parts and waste parts. The effective portion is placed on the rear end or two surfaces of the upwardly moved guide vane, and is subsequently conveyed by the upper conveyor 32 in the direction of arrow F, which is the product route. In addition, the irregularly cut rear end portion after the branching point is transferred to a lower conveyor with a large opening by the bent guide vane 23, and conveyed in the direction of arrow E, which is the waste veneer route. Ru.

Thereafter, similar operations are repeated to cut products and scraps, and at the same time automatically distinguish and transport them to their respective routes.

According to the present device described above, the following effects can be achieved.

1. The cutting process and the distribution process can be combined in a single device.

2 The knife holds a linear steel wire at a predetermined tension.
Because of the configuration, it is possible to align the cutting edges on the same straight line.
No setting required.

3 Normally, there is no concern about the blade spilling, etc., and there is no need to sharpen the cutting edge, resulting in low running costs.

4. The knife is extremely lightweight and has no sharp edges, making it safe and easy to handle.

As mentioned above, it has become possible to take advantage of many advantages with a simple configuration.

[Brief explanation of the drawing]

FIG. 1 is a side view of one embodiment of the present invention, and FIG. 2 is a perspective view of the cutting blade device. 1......Sad...Fist...Delivery conveyor 2...
・・・・・・・・・Piece presser foot 4・・・・・・・・・・・・
・・Pressure pulley 5・・・・・・・・・・・Auxiliary conveyor 6・・・・・・・・・・・Pressure mechanism 10・・
......Blade receiving device 11.11'...
・・・・・・Uke blade 12・・・・・・・・・・・・Machine
伜15.15′・・・・・・Guide plate 20
・・・・・・・・・・・・Cutting blade device 21・・・・・・
・・・・・・・・・Linear cutter 23・−・φ・−＠
−−− Kitebane 23 E・・・・・・・・・・・・
Guide vane tip edge 26...
Tension device 28... Swing mechanism 30... Unloading conveyor 31.
......Lower conveyor 32...
・・・・・・Upper conveyor 33.34・・・・・・
...Single plate presser Q...Singing locus of linear cutter V1, v2...More than veneer

Claims (1)

[Scope of Claims] 1. A carry-in conveyor constituted by a plurality of belts. A pressure pulley that can be raised and lowered is placed above the end of the loading conveyor. 1. A receiving blade device comprising a veneer conveyance path with a large opening at the bottom and vertically opposing receiving blades arranged on the swing locus of a linear cutter across the conveyance path is installed at the terminal end of the conveyor. erected near the department. Consisting of a cutting blade device consisting of a guide vane that holds a linear cutter tensioned and held parallel to the receiving blade by a tension device, which can be swung up and down by a swinging mechanism around a fulcrum shaft, and a plurality of belts. What is claimed is: 1. A veneer cutting device, characterized in that a veneer cutting conveyor and a veneer discharge conveyor are disposed near a veneer discharge section of a blade receiving device. 2. The veneer cutting device according to claim 1, wherein the pressure pulley is elastically held downward by a pressure mechanism. 3. The veneer cutting device according to claim 1 or 2, wherein the swinging mechanism of the cutting blade device is constituted by a fluid cylinder. 4. The veneer cutting device according to any one of claims 1 to 3, wherein the tension device for the linear cutter stretched over the cutting blade device is constituted by a fluid cylinder. . (Margin below)