JPH07102530B2 - Vertical stripping device for veneer veneer - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applied to the production of a parallel plywood obtained by laminating and adhering a plurality of sheets with the fiber direction oriented in the length direction of the product, or a long veneer laminated material commonly called LVL. Veneer veneer for obtaining the long veneer veneer necessary for the normal veneer veneer from the normal short veneer veneer, to vertically strip the rectangular or rectangular short veneer veneer in the fiber direction to form the long veneer veneer. Vertical stripping device.

[0002]

2. Description of the Related Art A conventional vertical stripping device for a veneer veneer of this type is disclosed in, for example, Japanese Patent Laid-Open No. 3-147802, a vertical stripping device for veneer veneer. A complex type scarf machine that cuts into a symmetrical scarf slope, a spray type applicator that applies adhesive to the upward scarf slope, and a computer that controls the amount of servo motor conveyance by a veneer detector and rotary encoder. A veneer veneer vertical stripping device using a so-called digital servo technology is known, and a veneer veneer as disclosed in Japanese Patent Laid-Open No. 3-288603 is used for a scarf joint device in a manufacturing process of a veneer laminated material. Scarf cutting part that cuts both wood mouths of symmetrical scarf slopes facing upward and downward, and a scar of a preceding veneer or a succeeding veneer. A pair of scarf glued overlapping parts that overlap the scarf slopes with a drip application of adhesive on the slopes using an open / close valve type gluing device that also functions as a stopper, and multiple sets arranged corresponding to the cutting pitch of the scarf cutting part Also known is a so-called hot plate dispersion type veneer veneer vertical stripping device comprising a scarf hot pressing part.

[0003]

However, in the conventional device as described above, the equipment for applying the adhesive to the slope of the scarf is a spray type applicator or an open / close valve type gluing device also serving as a stopper. Because it was a thing,
There is a problem in processing accuracy that the adhesive application surface largely protrudes from the scarf slope to the plate surface and contaminates the equipment, resulting in fracture of the material, and because the overlapping scarf slope is heated and pressed. The equipment of the equipment was a single high-frequency press, or a set of multiple sets of hot plate presses distributed in a hot-press location apart from the superposition location. Due to obstacles, it is practically impossible to perform complete heat and pressure treatment for a short time, and it is not possible to continue consistent sandwiching and conveying from the stacking location to the heat and pressure location. Since there is a problem with the adhesiveness that a desired adhesive strength product cannot be obtained, the present invention is to remove both problems by cutting the both mouths with a composite scarf cutting part. The equipment for applying adhesive to the upwardly scarf inclined surface of the test has been veneer, scarves gluing of the linear coating type for applying adhesive from above linearly scarf inclined surface is provided, also the adhesive the coated superimposed scarf slope in equipment for applying provisional wear heat, or up and down
Temporary scarf heat consisting of a hot plate that is pressure-polymerized for a specified time from
The platen portion is provided, and also the point superposition of temporarily attached to the scarf slope in equipment to continue feeding the or or transportable, above
A gripping conveyor that holds and conveys from below, and further
Heat the overlapping part of the temporary scarf slope again.
Equipment for press-fitting and finally wearing is clamped from the top and bottom for a predetermined time
The purpose of this is to provide an appropriate application of adhesive in the vertical stripping device for veneer veneer and the establishment of proper operation of divided heat and pressure by providing a hot- wear scarf hot-pressing part consisting of a hot plate. Is.

[0004]

In order to achieve the above-mentioned object, the present invention comprises a cutting portion, a gluing portion, an overlapping portion and a thermocompression portion of the scarf slope as shown in the following (a) to (d). This is a vertical stripping device for veneer veneer.

(A) A composite scarf cutting section for cutting both wood openings of a veneer veneer into upward and downward symmetrical scarf slopes.

(B) A linear coating type scarf gluing portion that applies an adhesive linearly from above to the slope of the upward scarf cut by the scarf cutting portion.

(C)Adhesive by the scarf gluing part
The following veneer is applied to the upward scarf slope of the preceding veneer coated with
The scarf to overlap the downward facing scarf slope
Lifting the mouth end of the front side of the succeeding veneer arranged in the latter stage of the gluing part
Do not use a roll or a stopper to stop the trailing edge of the subsequent veneer.
Ravi and the preceding and succeeding veneer scarf parts from above and below at specified times
Temporary wearing scarf hot-pressing part consisting of hot platen for interpolymer pressure  (D)The temporary wearing scarf was separated from the hot pressing part by a predetermined pitch.
Stacked by the temporary wear scarf hot press at the rear position
The overlapping part of the scarf slope that is fitted and temporarily worn
This is a real wear suit consisting of a hot platen that is pressed again from above and below for a predetermined time.
Calf heat and pressure section, (E)From the temporary wear scarf heat and pressure section, the main wear scarf heat
Between the pressure section Temporary wearing scarf superposed by the hot press
Be careful not to shift the overlapping part of the scarf slope
A holding conveyor that holds and conveys from above and below.

[0009]

Since the present invention is configured as described above, a device for linearly applying an adhesive to the upward scarf slope of a veneer veneer provided by cutting both openings by a composite scarf cutting part And the action of the equipment for dividing and heat-pressing the superposed scarf slope,
Appropriate application of adhesive in vertical stripping device for veneer veneer,
This is because the proper operation of heat pressure is also performed, that is, the linear coating type gluing part of the present invention is applied to the surface of the upward scarf slope formed on the rear edge of the veneer veneer, and the heat is applied to the surface. Spreader roll that linearly applies an appropriate amount of adhesive such as curability.A linear applicator such as a mono dispenser is installed so that the adhesive is applied linearly in the direction orthogonal to the fiber direction of the slope. It is configured to properly apply the adhesive. The temporary wear scarf hot-pressing part, the permanent wear scarf hot-pressing part, and the sandwiching conveyor of the present invention are different from the temporary wearing hot-pressing operation that is first performed at the overlapping position of the scarf slopes. equipped with <br/> clamping conveyor for pinching transport from the vertical so that there is no deviation of the resulting superposition point between the wear heat pressure operation to be performed, the present from the temporary wearing scarf hot pressing section
The process to reach the wear scarf hot press
It is designed to prevent the slippage .

[0010]

1 and 2 illustrate a series of steps in which a vertical veneer stripping device for a veneer veneer according to the present invention is installed. A rectangular or rectangular short veneer veneer 2 mounted on an elevating table 1 or the like is shown. Is piled up from the uppermost surface onto the conveyor 4 from the fiber direction by the veneer feeder 3 and the like, and its front end side wood mouth is cut downward, and its rear end side wood mouth is cut into a symmetrical scarf slope, that is, the veneer veneer 2 Downward scarf cutting part 5a consisting of a cutter block or the like for cutting the front end edge of a downward scarf slope, and upward scarf cutting consisting of a cutter block or the like for cutting the rear end edge of the veneer veneer 2 into an upward scarf slope. The veneer veneer 2 is conveyed to the composite scarf cutting part 5 that combines the parts 5b.
Form an upward and downward symmetrical scarf slope at both mouths.

Reference numeral 5c in the figure denotes an adjusting mechanism for moving the upward scarf cutting portion 5b for adjusting the cutting pitch of the veneer veneer 2.

Next, the linear coating type scarf gluing portion 6 for linearly applying an adhesive such as a thermosetting adhesive to the upward scarf slope of the veneer veneer 2 cut by the scarf cutting portion 5 from above is formed. As illustrated in detail in FIG. 3 for a linear coating machine including spreader rolls, a spreader roll 6b equipped with an elevating mechanism 6a such as an air cylinder is slidable from the upper side to the lower side.
The spreader roll 6 is brought into contact with the upward slope of the scarf veneer 2 conveyed by the d.
An adhesive consisting of a coating of a suitable thickness formed on the surface of b is applied in a straight line in a direction orthogonal to the fiber direction of the slope. The means for forming an adhesive film of an appropriate thickness on the surface of the spreader roll 6b is, for example, as shown in the drawing, the bottom surface of the adhesive tank 6d and the spreader roll 6b.
It can be performed by installing an appropriate adjusting piece, a doctor roll or the like between b. Further, when the adhesive veneer 2 is applied to the veneer veneer 2, a presser bar 6f equipped with an elevating mechanism 6e for pressing the rampage near the scarf slope to make the veneer veneer 2 flat is installed. In addition, a vertical movement mechanism 6g such as a manual type in which the entire scarf gluing part 6 is freely adjustable in the conveying direction, or a lateral movement such as a manual type for taking out the sideways and cleaning residues such as adhesives A mechanism 6h is attached.

Next , temporary wearing in which the downward scarf slope of the succeeding veneer is superposed on the upward scarf slope of the preceding veneer to which the adhesive has been applied by the scarf gluing portion 6 and is temporarily attached.
As shown in detail in FIG. 3, the scarf hot- pressurizing unit 7 uses a lifting roll 7b equipped with an elevating mechanism 7a such as an air cylinder to slightly move the tip of the succeeding veneer 2a conveyed by the above-mentioned conveyor 6cd. Lifting up, the tip of the downward slope of the scarf is brought into contact with a stop stopper 7d equipped with an elevating mechanism 7c such as an air cylinder, and the servo motor 9a is driven to arrive at the superposition position first and stand by. The single plate 2b is stopped so that it is accurately positioned on the slope of the upward scarf, and then the lift mechanisms 7eu and 7ed such as air cylinders are activated to press the heating plates 7fu and 7fd heated by a heater from above and below. By tightening, the downward scarf slope of the subsequent veneer and the upward scarf slope of the preceding veneer are applied between the superposed layers. The adhesive heat-pressed to start the tack operation for the first time in. In addition, the hot platen 7 at the stacking place
Fu and 7fd are overlapped with the temporary wearing operation, and the nipping conveyor 7gu whose rear end is always oscillating upward is oscillated downward so that nipping and conveying can be performed immediately in the overlapping state, and the lifting and lowering of the air cylinder etc. The mechanism 7h is activated at the same time.

Next, the hot platen 7 is separated from the temporary wear scarf hot- pressing portion 7 by a cutting pitch P of the veneer veneer 2.
fu, disposing the wear scarf thermal pressure portion 8 hot plates 8au for the wearing operations making up, the lifting mechanism 8b such 8ad and air cylinder on before bellflower lifting conveyor 7gu the fixed gripping conveyor 7gd with 7fd . Further, in the main wear scuff hot-pressing portion 8, the distance can be adjusted in response to the change of the cutting pitch P of the veneer veneer 2, and a manual type moving mechanism 8c or an air cylinder is used. tension adjustment mechanism 8du equation like, 8DD is attached to the respective fixed gripping conveyor 7gd the previous bellflower lifting conveyor 7Gu.

In the figure, 9a and 9b are the conveyors 6c.
u, 6 cd and a servo motor or the like for driving the sandwiching conveyors 7 gu, 7 gd, and the scarf cutting section 5, scarf gluing section 6 and temporary
And wear scarf hot pressing portion 7 and the wearer Scarf heat pressure portion 8 clamped
The veneer veneer vertical stripping device consisting of a conveyor 7 gu is connected to the vertical veneer stripping device to cut a continuous strip-shaped vertical stripping veneer veneer veneer produced by the device into a desired constant size clipper 10. Further, an automatic stacker 13 for depositing the vertical strip long veneer veneer 11 cut into the regular size on the elevating table 12 is arranged to form a series of steps.

[0016]

INDUSTRIAL APPLICABILITY As described above, the present invention provides a veneer unit.
Symmetrical with the front edge of the plate facing down and the rear edge of the plate facing up
A complex scarf cutting part that cuts on a scarf slope
An upward scarf cut by the scarf cutting section.
A linear coating type adhesive that linearly applies adhesive to the slope from above.
Adhesive with the calf glue part and the scarf glue part
The following veneer is applied to the upward scarf slope of the preceding veneer coated with
The scarf to overlap the downward facing scarf slope
Lifting the mouth end of the front side of the succeeding veneer arranged in the latter stage of the gluing part
Do not use a roll or a stopper to stop the trailing edge of the subsequent veneer.
Ravi and the preceding and succeeding veneer scarf parts from above and below at specified times
Temporary wearing scarf hot-pressing part consisting of hot platen for interpolymer pressure
Rear stage separated by a certain pitch from the temporary wear scarf hot press
The temporary wearing scarf is placed in the
Once again, the overlapping part of the scarf slope that was temporarily worn
Wearing scarf consisting of a hot plate that is clamped from above and below for a predetermined time
From the heat and pressure section and the temporary wear scarf heat and pressure section to the main wear scar
The temporary wear scarf heat and pressure part is used to cover the space up to the heat and pressure part.
The overlapping part of the sloped scarf slopes does not shift
By providing a sandwiching conveyor that sandwiches and conveys from above and below , the proper application of the adhesive in the vertical stripping device of the veneer veneer and the establishment of the proper operation of the divided heat and pressure are achieved. According to the conventional device, the application surface of the adhesive was significantly protruded from the slope of the scarf to the plate surface to contaminate the equipment, resulting in a difficulty in processing accuracy and a high-frequency voltage discharge phenomenon. Due to problems such as the above, it is practically impossible to perform complete heat and pressure treatment for a short time, and it is not possible to continue consistent sandwiching and conveying from the stacking place to the heat and pressure place. The practical effect is extremely remarkable, because it is possible to wipe away what has been abraded and has a problem of adhesiveness in which a product having a desired adhesive strength cannot be obtained.

[Brief description of drawings]

FIG. 1 is a side view of a series of steps of the present invention.

FIG. 2 is a plan view of a series of steps of the present invention.

FIG. 3 is a side view of a scarf gluing portion, a temporary wearing scarf hot pressing portion, and a permanent wearing scarf hot pressing portion, which are essential parts of the present invention.

[Explanation of symbols]

 5 Composite type scarf cutting part 6 Linear coating type scarf glue part 7 Temporary wear scarf heat pressure part 7 gu Holding conveyor 8 Wear scarf heat pressure part

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Nao Aizawa 5-1, 1 Nitta-cho, Takahama-shi, Aichi Examiner, Takeo Maeda, Hashimoto Denki Kogyo Co., Ltd. (56) Reference JP-A-4-282201 A) JP-A-4-185402 (JP, A) JP-A-3-288603 (JP, A)

Claims (1)

[Claims] 1. A composite scarf cutting part that cuts a veneer veneer with a front side mouth facing downward and a rear end side facing upward to a symmetrical scarf slope, and an upward scarf slope cut by the scarf cutting part. A linear coating type scarf gluing section for linearly applying an adhesive to the above, and the scar.
Upward of the preceding veneer coated with adhesive with the glue
Overlaid with a downward facing scarf slope on the scarf slope
Subsequent to the rear of the scarf gluing section to match
The veneer lift roll on the tip side of the veneer and the tip of the succeeding veneer
Side gate stop stopper and the preceding and succeeding veneer plates
Temporary heating plate that presses the roof from the top and bottom for a specified time.
From the wearing scarf hot pressing part and the temporary wearing scarf hot pressing part
The temporary wearing scarf at a rear position separated by a predetermined pitch
A scarf slope that has been temporarily attached by being superposed by the heat and pressure section.
A hot platen that presses the overlapping parts of
A permanent wear scarf consisting of a heat and pressure section, and the temporary wear scarf
Temporary wear between the heat pressure part and the scarf heat pressure part
Weight of scarf slopes superposed by scarf hot press
Hold the top and bottom to prevent the misaligned parts from shifting
Vertical stripping device for veneer veneer characterized by comprising a holding conveyor .