JPS5932380B2 - High-speed automatic loading device for veneer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is capable of cutting veneers of regular width and fixed width that are cut by a high-speed veneer clipper and transported at high speed with no gaps left between successive veneers. This invention relates to a high-speed automatic loading device that stacks veneers separately without damaging them.

When cutting the surface of logs using veneer lace, a large number of veneers of length that can be cut into individual veneers and several veneers of fixed length are continuously piled up, and the cutting speed is usually around 100 m/min. This is done at high speed.

In order to process these veneers in Norman on the veneer lace line, high-speed clippers and automatic loading equipment are required to cut and remove defective parts. The former type of clipper has already been put to practical use, such as a rotary type clipper, but an effective means for the latter type of loading device has not yet been developed. This invention provides a device suitable for loading this kind of veneer, and automates the veneer lace line.
The purpose is to contribute to labor saving. Another object of the present invention is to improve this type of loading device in which the veneers are supported and conveyed by an arrival conveyor equipped with needle-like objects, and the veneers are released from the arrival of the needle-like objects to be deposited.

In the conventional method using this kind of pricking conveyor, the needle-shaped objects are delivered over the entire length of the veneer in the conveying direction, or the needle-like objects are delivered only to the front end of the veneer. In the former case, the veneer arrives with a large number of needle-like bodies, so the veneer is damaged when struck off by the bar, and is unsuitable for high-speed conveyance; in the latter case, only the front end is stuck. Therefore, it can be used for veneers that are short in the direction of conveyance, such as sized veneers, but for veneers that are long in the direction of conveyance, such as fixed-length veneers, the rear end may sag downward and cause a pile up. 9, there was a defect that it tore during transportation. This invention was developed in order to eliminate these drawbacks of the conventional method.9 Since the front and rear ends of fixed length veneers are pierced by separate pierced conveyors, there is no need to worry about the process of supporting and conveying the veneer. Next, there is no chance of the veneer breaking or tearing, and the release from sticking occurs at the front and rear ends almost simultaneously or starting from the rear end first, resulting in stable deposition, and only the front and rear ends are stuck. There is no damage to the veneer when it is released from sticking, and since sticking conveyors are provided for the front and rear ends of the regular veneer and fixed length veneer, the veneer can be removed at high speed and at the beginning of the gap. Even if the device is delivered in a damaged state, it can be stabbed and released reliably. To explain this invention based on the drawings, a conveyor 1 is connected to a high-speed veneer clipper, and a rotary wheel 2 on which an endless belt is stretched.
The end portion 1' is at the position of 1', and it travels at a constant speed in the conveying direction F by the rotary drive of the rotary wheel 2 (the drive device is not shown), and the fixed length veneer A and the sized veneer smaller than the fixed length are transported at a constant speed. The plate B is transported in a direction perpendicular to its fibers.

Above the conveyor 1, fixed-length veneers A and sized veneers B conveyed by the conveyor 1 are stuck and supported.
A sized veneer pinning conveyor (hereinafter simply referred to as sizing conveyor) 3 for sized veneer B to be transferred to the rear of the end portion 1' and a sized veneer front end sticking conveyor for sized veneer A ( 4 trigrams (hereinafter simply referred to as the standard length front end conveyor) and the standard length veneer rear end sticking conveyor (
There are three sets of pricking conveyors (hereinafter simply referred to as fixed length rear end conveyors) 5 arranged in parallel.

These three sets of piercing conveyors 3, 4, and 5 each have a large number of needle-shaped bodies N attached to the surface of two endless strips, and the length conveyor 3 has a front end that is the starting end 3'. The standard length front end conveyor 4 is connected to the rotary wheel 6 and the rear rotary wheel 7 which is the end portion 3'', and the front rotary wheel 6' which is the starting end 4' and the rear rotary wheel 7 which is the end portion 4f. Car 7' has a fixed length rear end conveyor 5.
The front rotary wheel 65, which is the starting end 5', and the rear rotary wheel 7'VC, which is the distal end 5', are stretched. Then, the fixed size veneer A and the sized veneer B conveyed by the conveyor 1 are placed on the running path below each of the pricking conveyors 3, 4, and 5. 3
. A pressing body 8 for the front end of a veneer with a size that presses the needle-shaped body N to stick it to each part of the veneer.
, a pressing body 8'K for the front end of the fixed-length veneer, and a pressing body 8 for the rear end of the fixed-length veneer are provided, respectively. Each pressing body 8, 8/
, 8' are moved back and forth between the positions shown by the solid line and the dotted line shown in FIG. It's summery. In the embodiment, each front rotary wheel 6, 6', 6 is attached to the same shaft 10, and the rotational drive of the shaft 10 (,
Each pricking conveyor 3, 4,
5 is run at the same speed as the conveyor 1, but each starting end 3
', 4', and 5' do not necessarily have to match; in short, it is sufficient that a pressing body can be disposed between each start end and end part V, and each pricking conveyor can run at the same time after each. It can be selected and adopted as appropriate, such as by using a rotary wheel of 300 degrees. Each end portion 3', 4', 5 of each pricking conveyor 3, 4, 5 is located behind the end portion V of conveyor 1, and the lower part of each pricking conveyor 3, 4, 5 is The running path forms an open conveyance surface, and is configured so that the veneers being pricked and conveyed by each pricking conveyor can be dropped and deposited downward. The detachable bodies 11' are disposed at the four distal ends of the standard length front end conveyor 4, and the detachable bodies 11' are disposed at the distal ends 5''VC of the regular length rear end conveyor 5, respectively. 11, 11', 11 rear rotary wheels 7, 7', 7'f) Each shaft 12, 12', 12
The rotary wheels 7, 7', and 71 are fixed at a fixed point f, and each rotary wheel 7, 7', 71 is a rotating body having a human diameter. Only the veneer stuck to the needle N of the delivery conveyor is removed.

Of the detachable bodies 11, 1V, 11' (17), the detachable body 11' for the front end of a regular length veneer is the detachable body 1 for the rear end of a regular length veneer.
11 (downward side in the conveyance direction) and arranged so that the interval is approximately the same as the dimension L of the regular length veneer A, or a distance L5 that is somewhat larger than the dimension L as in the example. Then, the front and rear ends of the standard length veneer A are released from sticking almost simultaneously or the rear end is slightly earlier than the front end, and in a stable state, the rear end hangs downward just before stacking. In this way, the front end is allowed to fall onto the pile A/ without bending, and the pile is always kept in good condition. In the embodiment, the detachable body 11 for a fixed-length veneer is a detachable body 1V for the front end of a fixed-length veneer.
Although it is located at the rear, this arrangement position may also be at the front (upper side in the conveyance direction) of the detachment body 1V for the rear end of standard-length veneers, and these selections are suitable for processing these veneers. Perform as appropriate according to the post-process.} Once the placement position of each detachment body is determined,
In order for each breakaway body to remove only the veneer stuck to its sticking conveyor, the front breakaway body is placed in a position where it does not cross the path below the stabbing conveyor for the rear breakaway body. Arrange. At the loading conveyor 1, a discrimination detector 13 that discriminates between the regular size veneer A and the sized veneer B being conveyed, and a veneer detector 14 that detects the front end and rear end of the veneer are sequentially installed. It is arranged.

The discrimination detector 13 is, for example, a photoelectric type that detects the front end and the rear end of a passing veneer, and transmits the detection signal to a discrimination circuit 15 consisting of a counter or the like. It is determined whether the veneer is a regular length veneer or a sized veneer based on the time limit until detection. / and the standard length rear end storage circuit 161, respectively. The sizing memory circuit 16 is connected to the operating mechanism 9 of the pressing body 8 for sizing veneers, to the operating mechanism 9' of the pressing body 87 for the front end of bamboo veneers, and to the operating mechanism 9' of the pressing body 87 for the front end of bamboo veneers. The memory circuit 16 is connected to the pressing body 85 for the rear end of the veneer B and the operating mechanism 91, and the memory circuit transmits a signal to the operating mechanism based on the detection signals of both detectors 13 and 14, and the pressure body 85 for the rear end of the veneer B In the case of , the operating mechanism 9 is operated and the needle-like body N of the sized conveyor 3 is stuck to its front end by the pressing body 8, and in the case of the fixed length veneer A, the operating mechanisms 9' and 9? When activated, the pressing body 8
The needle-shaped body N of the standard-length front-end conveyor 4 is stuck to the front end of the pin, and the needle-shaped body N of the regular-size rear-end conveyor 5 is stuck to the rear end of the pressing body 8''. Each veneer is supported and conveyed by the sticking and running of the sticking conveyor, and when the front end of the sized veneer B reaches the position of the detachment body 11, it is released from the sticking by the detachment action and falls downward. In the case of a sized veneer, only the front end of the veneer is supported and transported, but because the length of a sized veneer is relatively short, the rear end hangs downward. Stable transport and stacking can be carried out without causing damage or other inconveniences even if the veneer is transported in the same condition.Since the fixed-length veneer A is transported while supporting the front end and rear end, the length in the transport direction is Even if there is a breakage, stable transportation is carried out without damage or tearing, and the release from sticking by the detachment body is performed at the front and rear ends almost simultaneously or from the rear end first, as described above. , it is possible to perform stable deposition without any problems.As described above, the present invention provides a stabilization conveyor for sized veneers and a front end and a rear end for fixed length veneers. A pricking conveyor is provided, and a pressing body is also provided for each pricking conveyor, so that the conveyor can handle the situation in which fixed-length veneers and sized veneers are mixed, and the interval between successive veneers is almost the same. No matter what condition the veneer is being transported at high speed, the front end of the sized veneer will be securely attached to the front end and the rear end of the regular veneer will be able to be supported and transported at high speed. The fixed-length veneer can be transported stably because its front and rear ends are supported and transported, and only the front and rear ends can be released from sticking. There is no damage to the veneer when the veneer is detached, and furthermore, since the front and rear ends of regular length veneers are detached almost simultaneously or the rear end first, stable and good loading can be achieved. It has the following effects and enables the loading and unloading of veneers that are continuously conveyed at high speed, contributing to the automation and labor saving of veneer lace lines, and reducing the need for multiple workers in plywood manufacturing. This contributes to the

[Brief explanation of drawings]

The drawings show an example of the implementation of the present invention.
The figure is a side view, FIG.
The figure is a side view showing a state in which a fixed length veneer is supported and conveyed by each pricking conveyor. 1...Conveyor conveyor, V...End part,
3...Sized veneer sticking conveyor, 4...
Standard length veneer front end sticking conveyor, 5... Standard length veneer rear end sticking conveyor, 3', 4', 5t... Starting end, 314', 5 friends...・End part, 8, 8', 8/
l... Divine pressure body, 9, 9', 9'... Operating mechanism, 11, 1V, 111... Separation body, 13...
...Discrimination detector, 14...Single plate detector, A.
...Standard size veneer, B...Size veneer, N...
...Acicular body.

Claims (1)

[Claims] 1. A large number of needle-like bodies are placed on the surface of two endless strips above a conveyor running at a constant speed that transports veneers of fixed width and veneers of fixed width cut by a high-speed veneer clipper. Three sets of sized veneer pricking conveyors, a fixed length veneer front end pricking conveyor, and a fixed length veneer rear end pinning conveyor are installed in parallel, and each set of fixed length veneer pricking conveyors runs at the same speed as the attached conveyor. The starting end is made to intertwine with the end part of the transport conveyor, and the back of the endless belt of each arrival conveyor is pressed into the intertwined part, so that the needle-like object is stuck to the veneer running on the transport conveyor. A pressing body is disposed, and the end of each of the pricking conveyors is positioned rearward of the end of the transport conveyor to form a transport surface with an open running path below, and the end of each of the pricking conveyors There is a detachment body for releasing the veneer stuck on each pricking conveyor, and the detachment body of the standard-length veneer front-end stabbing conveyor is located behind the detachment body of the regular-length veneer rear-end stabbing conveyor. The detached body of the sized veneer sticking conveyor is located at a distance that is approximately the same as the size of the regular veneer or slightly larger than the size of the regular veneer. or in front of the detachment body of the conveyor for pricking the rear end of fixed length veneers, and sequentially insert fixed length veneers into the transport conveyor from the carry-in side. A discrimination detector that discriminates between sized veneers and issues a signal, and a veneer detector that detects the front and rear ends of sized veneers and regular length veneers and issues signals are installed. Based on this, each of the pressing bodies is actuated, and a needle-shaped body is stuck to the front end of the sized veneer, and a needle-shaped body is stuck to the front end and the rear end of the sized veneer, respectively. High-speed automatic loading of veneers, supported and conveyed by each sticking conveyor, released from sticking at the position of each detached body, and depositing regular-sized veneers and sized veneers separately. Device.