JPH0691605A - Gluing device for manufacture of plywood - Google Patents

Abstract

PURPOSE:To provide a gluing device for a manufacture of plywood which can correspond to all of manual, automatic and semiautomatic lay-up systems in the limited space by giving a veneer transportation function capable of corresponding to all of the veneers, such as a core plate, a rear plate and a middle plate consisting of veneers of two sorts having different fiber directions, on the same conveyor line. CONSTITUTION:The device is constructed such that even when the application object of an adhesive is expanded to a core plate 2, a rear plate 3 or a middle plate 4, an upper surface application machine 1 employed herein is made applicable by one, wherein a plurality of filaments 12 are strained at somewhat lower position on the veneer transportation lines respectively in communication with the upper surface application machine 1, and a transportation in and out conveyors 5, 8 arranged in front and the rear of the upper surface application machine 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention applies an adhesive agent to each of a core plate and a back plate or an intermediate plate by a top coater in a plywood manufacturing process and deposits them together with a front plate on which no other adhesive is applied. The present invention relates to an improvement of a gluing device for plywood production, which is used when plying an intermediate product of plies appropriately.

[0002]

2. Description of the Related Art As a conventional technique related to a gluing device for manufacturing plywood using a single-sided coating type top coater such as an extruder, there are many plywood sticking devices in JP-A-1-125201. Adhesive is applied to each of the core plate, back plate and middle plate using a single-sided coating type top coater such as Extruder, etc. Is disclosed for gluing apparatus for manufacturing plywood for producing the intermediate product. Normally, one double-sided coating type roll spreader is used to apply the adhesive only to both sides of the core plate and not to apply any other adhesive. A gluing device for manufacturing plywood, which appropriately produces an intermediate product of plies, is well known.

[0003]

A conventional apparatus for producing an intermediate product of 5 plies by using the above-mentioned many single-sided coating type top coaters is one in which a back plate and a backing plate are arranged on a superpositioning conveyor arranged in series in multiple stages. Four upper surface applicators for sequentially applying adhesives one by one to the upper surfaces of the first core plate, the middle plate and the second core plate are arranged at intervals, and a front plate to which no adhesive agent is applied is provided at the final stage. A lay-up system in which so-called adhesives are applied to the back plate, the first core plate, the middle plate, and the second core plate, respectively, by stacking them together to form a 5-ply intermediate product at once. Therefore, the length of the single plate transfer process is long, and since a large number of top coaters are arranged at intervals, adjustment of the coating amount, supply and recovery of the adhesive, and bonding Since there was a difficulty in spending a lot of effort to clean the agent, Many of the UNA lay-up system,
This type of single-sided coating type top coater is not used to expand the required space, but is performed by the double-sided coating type adhesive double-sided coating method using a double-sided coating type roll spreader in which one required space is integrated as in the conventional method. It was what was there.

However, recently, it has become difficult to obtain a veneer having a smooth surface cut from a raw hardwood such as a South Sea timber and the like. When the use of the board is forced, there is a problem in the double-sided coating method of the adhesive by the double-sided coating type roll spreader, which is caused by the uneven surface of the core plate cut from the softwood log or the like. Smoothness of the above-mentioned surface of the material has been caused due to undesired application of a large amount of adhesive to the surface of the material due to adhesion failure due to the occurrence of coating spots, the occurrence of glue in the recess, etc. , Is not related to non-smoothness,
It has been strongly desired to establish a single-sided coating method for a core plate and a back plate or a middle plate, which requires only one top surface coating machine and has a required space.

Therefore, according to the present invention, in order to eliminate the above-mentioned disadvantages of the conventional method, the application object of the adhesive is expanded to the core plate and the back plate or the middle plate, but one upper surface coating machine can be used. 1
A single-sided coating type top coater of the table is connected to each of the carry-in and carry-out conveyors arranged in front of and behind the top coater, and a plurality of filaments are horizontally arranged at a slightly lower position on the veneer conveyance. It is constructed so that it can be stretched, and it can be applied to the same transport line for any single plate, that is, the core plate and the back plate or the middle plate, which consists of two types of single plates with different fiber directions. By providing a veneer transportation function, the purpose is to provide a versatile glue-gluing device for plywood production that can handle manual, automatic, and semi-automatic layup systems in an intensive space. It was done.

[0006]

In order to achieve the above-mentioned object, the present invention has a structure of the following items (a) to (c), one upper surface coating machine and a carry-in and carry-out conveyor before and after it. This is a gluing device for plywood production, which is connected to, and horizontally stretches a plurality of filaments at a slightly lower position on the transportation of the veneer.

(A) A top coater comprising an extruder or the like.

(B) Carry-in and carry-out conveyors arranged before and after the top coater.

(C) A plurality of filaments which are connected to the top coater and each of the carry-in and carry-out conveyors and are horizontally stretched to a somewhat lower position on the veneer carrier line.

[0010]

In the pasting device for manufacturing plywood of the present invention, the application target of the adhesive is expanded to the core plate, the back plate or the middle plate, but only one top coating machine can be used. The single-sided coating type upper surface coating machine and the carry-in and carry-out conveyors arranged in front of and behind the upper surface coating machine are connected to each other, and a plurality of filaments are horizontally stretched to a somewhat lower position on the single plate conveyance. It is configured to be hung, and by doing so, the core plate is inserted from the front of the carry-in conveyor in parallel with the fiber direction in the transport direction and is transported as it is, and the fiber board is temporarily moved from the side of the carry-in conveyor to the fiber direction. After being inserted, the carrying direction is changed to the orthogonal direction and the product is carried in the same carrying direction as the core plate, that is, its fiber direction with respect to the carrying direction of the carry-in conveyor, the top coater, and the carry-out conveyor. There are two types of back plates or middle plates With respect to the board, the fiber direction during gluing is parallel to the transport direction and does not cause the phenomenon of dropping between transport rows due to hardening, and the fiber direction during gluing is orthogonal to the transport direction The same transport line can be applied to any single plate of the back plate or the middle plate that easily causes the phenomenon of falling between the transport rows, especially the back face in which the fiber direction at the time of gluing is orthogonal to the transport direction. A plate-conveying function that eliminates the phenomenon of the plate or the middle plate falling between the conveying rows is provided by the horizontally stretched linear strips, so that the core plate and the back plate or the middle plate are provided on each one side. Each of which is coated with an adhesive is conveyed to the stacking location at the end of the carry-out conveyor on the same line, and is piled up sequentially with other adhesive-free surface plates at the stacking location so that an intermediate product of the ply is appropriately prepared. Is. Therefore, the gluing work can be safely carried out on the same transport line for any of the core plate and the back plate or the middle plate, which is composed of two types of veneers having different fiber directions at the time of gluing. This makes it possible to handle any manual, automatic, or semi-automatic layup system in a space-intensive manner, using a single versatile top coating machine. The single-sided coating method was successfully established.

[0011]

1 and 2 show an embodiment of the present invention. First, a single-sided coating type top coater 1 is an extruder system composed of an extrusion nozzle 1a and a glue receiver 1b. , Other curtain flow coater type or spray type various adhesives such as urea resin are extruded in a multi-line or waterfall form or a spray form so that about 150 to 250 g / m ² can be applied to the upper surface of the veneer. There is something. Further, the carry-in conveyor 5 that feeds out the core plate 2 and the back plate 3 or the middle plate 4 accumulated on the upper surface coating machine 1 and supplies them from the same conveying line is composed of a grooved roll conveyor 5a. A first pinch roll 6 for feeding out the core plate 2 in the fiber direction from the stack, or an automatic feeder or the like in place of the first pinch roll 6 is installed in the foreground, and a side plate from the stack to the back plate 3 or the middle plate. 4 is once fed out from the fiber direction, and the carry-in conveyor 5
A second pinch roll 7 for changing the conveying direction to a right angle, or an automatic feeder or the like in place of the second pinch roll 7 is provided above. Furthermore, on the carry-out side of the upper surface coating machine 1, there is provided a carry-out conveyor 8 composed of a disk-shaped skewered conveyor 8a made of a material or the like to which an adhesive hardly adheres,
A deposited front plate 9 is disposed below the carry-out conveyor 8, and its end is a deposition site for appropriately mounting the front plate 9, the core plate 2, the back plate 3 and the intermediate plate 4 on the intermediate product 10 of the ply. 1
1 is configured. In the figure, 2a, 3a, 4a, 9
Reference numerals a and 10a are lifting tables for depositing the core plate 2, the back plate 3, the middle plate 4, the front plate 9 and the intermediate product 10. Next, a plurality of filaments 12 are horizontally stretched in communication with the top coater 1 and the carry-in and carry-out conveyors 5 and 8 at a slightly lower position on the single-plate conveying lines. 12 causes the fiber direction at the time of gluing to be softened orthogonally to the conveying direction, so that the back plate 3 or the middle plate 4 falls between the rows of the roll conveyor 5a constituting the carry-in conveyor 5 or It is possible to eliminate all the phenomenon of dropping into the front and rear spaces of the glue receiver 1b that constitutes the top coater 1 and the phenomenon of dropping between the rows of the skew conveyor 8a that constitutes the carry-out conveyor 8. Good, that is, gluing work on the same transport line for any single plate of the core plate 2 and the back plate 3 or the middle plate 4 consisting of two kinds of single plates having different fiber directions at the time of gluing It was made possible to do safely. Although not shown in the figure, the tension means for stretching the wire 12 in a normal gluing device is only required to connect a wire or the like to the terminal and fixedly stretch the wire. It is also possible to configure it as a conveyor so that it can rotate at all times.
Even if a small amount of adhesive adheres to the sheet, the tip portion of the veneer is always cleaned during the carrying process, so that there is no separate problem.

[0012]

As described above, according to the present invention, although the application object of the adhesive is expanded to the core plate and the back plate or the middle plate, one upper surface coating machine can be used. The single-sided coating type upper surface coating machine and the carry-in and carry-out conveyors arranged in front of and behind the upper surface coating machine are connected to each other, and a plurality of filaments are horizontally stretched to a somewhat lower position on the single plate conveyance. The same transport line can be applied to any of the core plate and the back plate or the middle plate, which is composed of two types of veneers that are configured to hang and have different fiber directions. By adding a single-plate transport function, it is possible to handle manual, automatic, and semi-automatic layup systems in an intensive space, so a double-sided coating type roll spreader like the conventional device can be used. Extruder that is not related to the smoothness or non-smoothness of the material surface even if it is not used The single-sided coating method for the core plate and the back plate or the middle plate, which requires a single space for the upper surface coating machine, has been well established. Even the core plate, the back plate, and the middle plate, which have been cut from raw wood and have a non-smooth surface, could be safely applied with the adhesive, so the Nankai industry has been facing these days. Due to the difficulty of obtaining veneer with smooth surface cut from hardwood logs such as timber, etc., it also contributed significantly to the promotion of rationalization business of conversion use of veneer with uneven surface cut from coniferous wood such as North Sea timber The effect of implementation was extremely remarkable.

[Brief description of drawings]

FIG. 1 is a plan view.

FIG. 2 is a side view.

[Explanation of symbols]

 1 Top coater 2 Core plate 3 Back plate 4 Middle plate 5 Carry-in conveyor 8 Carry-out conveyor 12 Wires

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kazuo Nakane 17, 1-5, Nitta-cho, Takahama-shi, Aichi Hashimoto Electric Industry Co., Ltd. Electric Industry Co., Ltd.

Claims (4)

[Claims] 1. A top plate coating machine comprising an extruder, a loading and unloading conveyor arranged in front of and behind the top coating machine, and a single plate communicating with the top coating machine and the loading and unloading conveyor respectively. A gluing device for manufacturing plywood, which consists of a plurality of filaments that are horizontally stretched slightly below the conveyor line. 2. The gluing device for manufacturing plywood according to claim 1, wherein the carry-in conveyor is formed as a grooved roll conveyor. 3. The gluing device for manufacturing plywood according to claim 1, wherein the carry-out conveyor is formed as a disk-shaped skewered conveyor. 4. The first pinch roll into which a core plate is inserted and the second pinch roll into which a back plate or an intermediate plate is inserted are arranged in front of the carry-in conveyor, and a side plate of the first pinch roll. A gluing device for plywood production.