JPS5850968Y2 - Single plate parallel feeding mechanism - Google Patents

Description

[Detailed description of the invention] This invention is a veneer side splicing machine that joints small width veneers that are conveyed one after the other by colliding with each other, or a veneer side splicing machine that joints small and medium veneers while conveying small and medium veneers. A veneer parallel feeding mechanism that can feed small veneers in parallel, like a veneer clipper that cuts and removes parts, and can maintain the veneer's parallelism even in the face of collisions or shocks during cutting. Regarding.

In a veneer cross-cutting machine or veneer clipper, the reason why the veneer becomes out of parallel when colliding with or cutting the veneer is mainly due to the slip between the endless belt that conveys the veneer and the driving rotating wheel, which causes the feed between the endless belts. This is due to the difference.

There are two ways to drive the endless belt and the driving rotary wheel without slipping, such as a chain and a chain wheel or a timing belt and a timing pulley. In addition, the former has disadvantages such as the veneer being contaminated by the lubricating oil supplied to the chain, and the latter has disadvantages such as the thin part of the recess of the timing belt being easy to tear. It is not very effective as a conveying means for use in horizontal strippers, veneer clippers, etc.

The present invention was developed with these points in mind.
Since an endless belt made of inexpensive synthetic rubber, etc., which is commonly used as an endless belt, is used, the production cost is low, and the simple structure of needle-like protrusions attached to the circumferential surface of the driving rotating wheel prevents slippage. It is possible to run an endless belt without any cracks, and it is possible to feed the veneer in parallel to withstand shocks such as rear-end collision or cutting in a veneer cross-cutting machine or a veneer critter, etc., and the endless belt can be easily torn. There are no inconveniences such as staining or contaminating the veneer.

The embodiment shown in the drawings is a veneer horizontal stripping machine using the mechanism of the present invention.
and a veneer clipper, in which FIG. 1 shows a veneer cross-cutting machine, and FIG. 2 shows an outline of the veneer clipper.

In Fig. 1, 1.1' are vertically opposed shafts 2, respectively.
, 2' are a plurality of driving rotary wheels, and 3 and 3' are driven rotary wheels that are also arranged vertically and attached to shafts 4 and 4', respectively.

Each driving rotary wheel 1, 1' and each driven rotary wheel 3, 3' includes:
A multi-striped endless bell made of flexible synthetic rubber that can be pierced with needle-like protrusions □) 5.5' has a hanging hook,
Each endless bell) 5.5' forms a clamping conveyance path a for the narrow veneer A.

The drive wheels 1 and 1' have the same diameter and are set to have the same circumferential speed due to their rotational drive (the drive device is not shown), and each drive wheel has a sharp tip on its circumferential surface. A large number of needle-like convex bodies N are attached.

The needle-like convex body N bites into each endless bell) 5.5', and the rotation of each rotary rotating wheel 1, 1' is transmitted to each endless bell) 5.5' without slipping, and therefore, each endless bell )
5.5' always runs at the same speed, and the veneer A is conveyed in parallel on the nipping conveyance path a.

6 is a carry-in conveyor, 7 is a colliding conveyor, and the colliding conveyor 7 is, for example, a freely running endless belt (an endless belt) 5.5
The veneer A conveyed by ' is configured so that its rear end coincides with the stop line XX where the feeding force disappears and stops.

Therefore, the veneer A conveyed by the endless bell) 5.5'
The veneer collides with the preceding veneer that is stopped at the stop line In this method, threads, etc. are attached to the front and back surfaces of the veneer after the veneer has been matched, and the veneer is laterally spliced.
When this veneer collides with the veneer in front, there is a considerable impact, and even against this impact, the needle-like convex body N becomes an endless bell)5.
5' is inserted into the endless bell) 5. No slip occurs between 5' and the drive rotary wheels 1 and 1', and the parallel feeding of the veneer by each endless bell is maintained by 5.5'. There are always good Yokohagi because they are distant relatives.

In FIG. 2, 8 is a knife, 9 is a receiving blade, and 10 is a detector commonly used to detect the cutting position of the defective part on the front and back of small and medium veneer A, and the detection signal of the detector 10 is The knife 8 is activated by the detection operation, and the defective portions at the front and rear of the veneer A are cut and removed.

The feeding mechanism of the present invention is effective even in the case of a veneer clipper that cuts defective parts of such small and medium veneers A, and the cutting lines of the front and rear ends of the veneer A are always parallel. Good cutting can be performed.

That is, the feeding mechanism of the present invention is disposed close to the front and back of the cutting position by the blade 8, and the upper and lower shafts 12, 12
A plurality of driving rotary wheels 11.11' are fixed to the upper and lower shafts 14.14', and a plurality of driven rotary wheels 13.11 are fixed to the upper and lower shafts 14.14'.
A plurality of endless bells 15 and 15' are stretched over each of the ends 13' to form a clamping and conveying path a for the veneer A close to the front and back of the cutting position.

Then, the circumferential speeds of each drive rotary wheel 11, 11' are set equally, and a large number of needle-like convex bodies N are attached to each circumferential surface,
By biting into each endless bell (15.15') of the needle-like convex body N, the rotation of the drive rotary wheel 11.11' is transmitted to each endless bell (15.15') without slipping, and the veneer A Parallel feeding is performed.

If a parallel feed mechanism is provided before and after the cutting position in this way,
When cutting the front end of the veneer A, parallel feeding of the veneer A is maintained against the impact by a feeding mechanism placed in front of the cutting position, and this parallel feeding is maintained by a feeding mechanism placed after the cutting position. The bridge is spliced by the veneer A, and the conveyance from cutting the front end of veneer A to cutting the rear end is carried out while maintaining parallelism, so the front and rear cutting lines of the veneer are always parallel, resulting in good quality small and medium veneers. This is because the cutting is done.

In FIG. 2, 16 is an incoming conveyor, and 17 is an outgoing conveyor.

In addition, in veneer crosscutting machines and veneer clippers, the veneer is conveyed in a direction perpendicular to its fibers, and the coefficient of friction in the direction perpendicular to the veneer fibers is relatively large. Although it is thought that there is almost no slip between the plates, some slip may occur depending on the density of the veneer surface, etc. In this case, the belt surface should be adjusted to prevent slip between the endless belt and the veneer. The coefficient of friction is increased by attaching needle-like protrusions to the surface.

As described above, the present invention makes it possible to feed veneers in parallel using an extremely simple configuration in which an endless belt is driven by a rotating drive wheel with a large number of needle-like protrusions attached to the circumferential surface. It has many advantages, such as maintaining parallel feed even in the face of impact during crosscutting or cutting, and low manufacturing costs.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an embodiment in which the parallel feed mechanism of the present invention is used in a veneer crosscutting machine, and FIG. 2 is a side view showing an embodiment in which the parallel feed mechanism of the present invention is used in a veneer clipper. 1.1', 11.11'... Drive rotating wheel, 3.
3', 13.13'... Driven rotating wheel, 2.2
', 4.4', 12.12', 14.14'...
- Shaft, 5.5', 15°15'...Endless belt, A...Single plate, N...Acicular convex body.

Claims (1)

[Scope of utility model registration request] Flexible □ made of synthetic rubber etc. that can be pierced with needle-like protrusions.
A plurality of endless belts are fixed to the same shaft and passed between a plurality of driving rotary wheels and driven rotary wheels arranged vertically opposite each other to convey the veneer in a pinching conveyance path, and each of the driving rotary wheels A parallel feed mechanism for a single plate, characterized in that the circumferential speeds of the drive wheels are set to be the same, and a large number of needle-shaped protrusions are attached to the circumferential surface of each drive rotary wheel.