JPH04152102A - Coating device of veneer - Google Patents

Abstract

PURPOSE:To contrive prevention of a deformation of a roller, by a method wherein a veneer is cut off, one side roller of the top and bottom rollers of a coating machine is controlled so that the same is separated from a coating position. CONSTITUTION:When a controller 50 detects cutting of a veneer 4 by a phototube 94, motors of the first winder 9 and a roller 54 are stopped and either one side roller of the top and bottom rollers of a coating machine 6 is controlled so that the roller is separated from a coating position. Concretely, a supporting shaft supporting either a roller 61 (coating roll) is raised and the roll 61 is separated from a roll 63 or the roll 63 is separated from the roll 61 by lowering the supporting shaft supporting the roll 63. Therefore, in the case where the device is stopped, the top and bottom rollers are released from a state where they press the veneer.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a veneer as a material for furniture and construction, and particularly to a veneer coating device for coloring or painting a veneer.

(Prior art) As a prior art of equipment for coating the surface of veneer,
There is a method proposed by the present inventor and described in an application filed on September 14, 1990.

(Problem to be solved by the invention) Recently, from the viewpoint of resource saving, the thickness of veneer has been increased from 0°2 to 1.
．． As thin as 0mm (especially the thickness of the veneer is 02III
1) If the thickness is very thin, such as ~0.4 mm, line the back side of the veneer with a sheet of nonwoven fabric or the like. In some cases, the sheet may be omitted. ) In addition, veneers are used in which veneers are connected to each other using finger joints or the like.

When this type of veneer is used in the apparatus described in the above-mentioned application, it is necessary to apply the coating while applying a certain amount of tension to the veneer, which results in the veneer being weak in strength and often being cut in the middle of the veneer. The equipment must be temporarily stopped each time.

When the device is stopped (the rollers are stopped), the upper and lower rollers are
Since the veneer remained in the pressed state, this state continued for a long time (and this caused the problem that the surface of the roller that pressed it deformed).

The present invention prevents deformation of the rollers by providing a control device that controls at least one of the upper and lower rollers of the coating machine to move away from the coating position when the veneer is cut. The purpose of the present invention is to provide a veneer coating device that achieves this goal.

In addition, in a veneer coating machine that uses a UV lamp, if the veneer is cut in the middle and the machine stops, the veneer also stops, so the residual heat from the UV lamp causes heat to be applied to the stopped veneer. This caused the problem that the veneer could catch fire.

SUMMARY OF THE INVENTION An object of the present invention is to provide a veneer coating apparatus that uses a shielding member to block UV irradiation from a UV lamp when the veneer is cut, thereby preventing the veneer from catching fire.

(Means for Solving the Problems) In order to achieve the above object, the veneer coating apparatus of the present invention includes a veneer installation machine that installs veneers, and a surface of the veneer from this veneer installation machine. Equipped with a coating machine consisting of upper and lower rollers for coating, a dryer for drying the surface of the veneer coated by this coating machine, and a winder for winding up the veneer dried by this dryer, When winding up the veneer with the winding machine, if the veneer is cut midway, the rollers are separated from the position where one of the upper and lower rollers of the coating machine is to be coated. The system is equipped with a control device that controls the system as follows.

In addition, the veneer coating apparatus of the present invention includes a veneer installation machine that installs veneers, a coating machine that coats the surface of the veneer from this veneer installation machine with UV curing resin, and a coating machine that coats the surface of the veneer with UV curing resin. a UV lamp for curing the UV curing resin of the cured veneer; a winding machine for winding up the veneer with the UV curing resin cured by the UV lamp; and a winding machine for winding up the veneer with the winding machine. ,
When the veneer is cut halfway, the U from the UV lamp
A shielding member for shielding V irradiation is provided.

(Function) In the veneer coating apparatus configured as described above, when the veneer is cut, at least one of the upper and lower rollers of the coating machine is moved from the coating position to the position where the veneer is to be coated. Since the rollers are controlled to move apart, when the apparatus is stopped, the upper and lower rollers are released from the state in which they pressed the veneer.

In the veneer coating equipment, when the veneer is cut,
Since UV irradiation from the UV lamp is shielded by the shielding member, it is possible to prevent heat from the UV lamp from being transmitted to the veneer.

(Example) An embodiment of the present invention will be described with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a veneer coating apparatus, and the veneer coating apparatus 1 is roughly composed of a first veneer coating apparatus 2 and a second veneer coating apparatus 3.

The first veneer coating device 2 is a device for coloring veneers, and the second veneer coating device 3 is a device for painting veneers.
Both of the veneer coating apparatuses 3 are for coating the surface of a veneer, and are also veneer coating apparatuses.

The first veneer coating device 2 is a device for highlighting the grain of the sliced veneer, and includes a first veneer installation machine 5 that supplies the backed veneer 4, and a first veneer installation machine 5 that supplies the backed veneer 4, and a coating machine 6 that applies color to the veneer 4 from the installation machine 5;
A wiping machine 7 wipes off the surface of the veneer 4 colored by the coating machine 6; a dryer 8 for drying the veneer 4 wiped off by the wiping machine 7; It is generally composed of a first winder 9 that winds up the veneer 4.

Further, the first veneer installation machine 5, the coating machine 6, the wiping machine 7, the dryer 8, and the first winding machine 9 are arranged in a straight line.

The first veneer installation machine 5 uses, for example, a veneer 4 wound into a roll (the thickness of the veneer is about 0.2 aa+ -1.0 mm; in particular, the thickness of the veneer is about 0.2 m+a ~0.4m
If the veneer is very thin (m), the back side of the veneer is lined with a sheet of non-woven fabric or the like to reinforce the strength. Depending on the case,
The sheet may also be omitted. ), and reels with shafts 51 are arranged above and below.

The upper reel is for installing the spare veneer 4 wound into a roll, and the lower reel is for installing the veneer 4 to be supplied to the coating machine 6. The coating machine 6 has, for example, two rolls 61 (for example, sponge rolls) on top.

A roll 62 (a roll made of stainless steel, e.g. a chrome-plated iron roll, an iron roll coated with a resin, etc.) and two rolls 63 and 63 below (a roll made of stainless steel, or a rubber roll covered with an elastic material, for example). The coloring material is held between the roll 61 (application roll) and the roll 62 (doctor roll), and the coloring material is applied to the veneer 4 by the roll 61 (*cloth roll).

A roller 54 and a guide roller 55 driven by a motor (not shown) are provided between the first veneer installation machine 5 and the coating machine 6.

The roller 54 supplies the veneer 4 of the first veneer installation machine 5 to the coating machine 6 side.

The wiping machine 7 has rolls 71 and 72 arranged above and below.
The roll 71 is a stainless steel roll (or rubber roll) that wipes the surface of the veneer 4, and the roll 72 is a rubber roll.

The coloring material wiped off by the roll 71 is scraped off by a blade 73 that is in contact with the roll 72.

The dryer 8 includes a belt conveyor 81 and a heater 8 in the main body.
2. A fan 83 is built in, and the heat from the heater 82 is supplied into the dryer 8 by the fan 83.

The first winder 9 has a shaft 91 driven by a motor (not shown).

Further, between the first winder 9 and the dryer 8, there are guide rolls 92 and 93 for guiding the veneer 4 to the first winder 9, and a roller for detecting whether or not the veneer 4 has been cut. A phototube 94 is provided.

Reference numeral 50 denotes a control device, and when the photoelectric tube 94 detects cutting of the veneer 4, the control device 50 stops the motor (not shown) of the first winding machine 9 and the motor (not shown) of the roller 54, and also stops the motor (not shown) of the coating machine 6. This is to control at least one of the upper and lower rollers so that the rollers are separated from the coating position (the state shown in Figure 1), and specifically, the support that supports the roll 61 (coating roll). The shaft (not shown) can be raised to separate the roll 61 (application roll) from the roll 63, or
3.63 is lowered to separate the roll 63 from the roll 61 (coating roll).

In addition, as a means for detecting whether or not the veneer 4 is cut, in addition to the phototube 94, a torque motor may be provided in the first winder 9 to detect when the torque becomes O. Furthermore, detection may be performed using a rotation detector or the like.

When starting the first veneer coating device 2, first, the backed veneer 4 wound into a roll is placed on the first veneer installation machine 5 through the rollers 54, the guide rollers 55, the coating machine 6, and the wiping machine 7. , dryer 8, guide roll 92.9
3. Through the first winding machine 9, the veneer 4 of the first veneer installation machine 5 is supplied to the coating machine 6 side by a roller 54 driven by a motor (not shown), and the veneer 4 is supplied to the coating machine 6 side by a motor (not shown). The colored veneer 4 is wound up by the first winding machine 9 that is driven.

That is, the veneer 4 is moved toward the first winder 9 by the first winder 9 and the rollers 54 by the drive of a motor (not shown), and the veneer 4 is colored by the coating machine 6.
It is wiped off by the wiping machine 7.

At that time, due to the coloring agent remaining in the conduit part of the veneer 4,
This will make the wood grain of the veneer 4 stand out.

The veneer 4 wiped off by the wiping machine 7 passes through the dryer 8, whereby the colored surface of the veneer 4 is dried.

The veneer 4 whose colored surface has been dried by the dryer 8 is wound into a roll by the first winder 9 via guide rolls 92 and 93.

On the other hand, as shown in FIG. The veneer 4 from the veneer installation machine 10 and this second veneer installation machine IO is UV (
A coating machine 1) that paints with Ultra-Violet) cured resin and evaporates the solvent in the UV cured resin of the veneer 4 coated with this coating machine 1) (in addition, leveling to flatten the paint surface, air bubbles etc. There is a setting part 12 for curing the UV curing resin of the veneer 4 from this setting part 12.
It is generally composed of a tra-Violet dryer 13, a blower 14 that cools the veneer 4 from the UV dryer 13, and a second winder 15 that winds up the veneer 4 cooled by the blower 14. ing.

The second veneer installation machine 10 uses, for example, a single FR4 wound into a roll (the thickness of the veneer is about 0.2 mm to 1.0 mm, and in particular, the thickness of the veneer is about 0.2 mm to 1.0 mm). 0.4m
If the veneer is very thin (m), the back side of the veneer is lined with a sheet of non-woven fabric or the like to reinforce the strength. Depending on the case,
The sheet may also be omitted. ), reels having a shaft 101 in the center are arranged one above the other.

The upper reel is for installing the spare veneer 4 wound into a roll, and the lower reel is for installing the veneer 4 to be supplied to the coating machine 1).

The coating machine 1) is, for example, a known roll-type coating machine, and includes a flow coater 1) 1 and a reverse coater 1) 2 (for example, the lower roll is a rubber roll covered with an elastic member, and the upper roll is, for example, (Other examples include a combination of a natural coater and a reverse coater.) The paint is a UV-cured resin.

The coloring material is applied to the veneer 4 by the roll of reverse coater 1)2.
applied to.

A roller 1.4 and a guide roller 105 driven by a motor (not shown) are provided between the second veneer installation machine 10 and the coating machine 1).

The setting part 12 is for evaporating the solvent in the UV curing resin applied to the veneer 4 (it also has a leveling function to flatten the paint surface, a function to make air bubbles come out, etc.), A heater 122 and a fan 121 are installed in the setting section 12, and the heat from the heater 122 is transferred to the fan 12.
1 is supplied into the setting section 12.

The UV dryer 13 is for curing the UV curing resin, and includes a UV lamp 131 (for example, a UV lamp that irradiates the inside with ultraviolet rays), a fan 132 that cools the UV lamp 131, and the like.

The light emitted from the industrially used UV lamp 131 includes a mixture of visible light and infrared light in addition to ultraviolet light.

The ultraviolet energy emitted from the UV lamp 131 is about 15 to 20% of the tube power, and most of it is dissipated as heat through radiation (infrared rays, visible light), convection, conduction, etc. It is necessary to cool down at 132.

The blower 14 cools the veneer 4 from the UV dryer 13, and the air from the blower 14 is guided toward the outlet side of the UV dryer 13 and then to the setting section 12.

The second winder 15 has a shaft 151 driven by a motor (not shown).

Further, between the second winder 15 and the UV dryer 13, there are a roll 152 and a guide roll 153 that guide the veneer 4 to the second winder 15, and a roll 153 that guides the veneer 4 to the second winder 15, and a A phototube 154 is provided for detecting.

50 is a control device, and when the control device 50 detects the cutting of the veneer 4 with the phototube 154, it stops the motor (not shown) of the second winder 15 and the motor (not shown) of the roller 104, and starts the reverse coater. 1) Controls at least one of the upper and lower rollers of the coating machine 2 so that the rollers are separated from the coating position (the state shown in FIG. 1) (the state shown in FIG. 2); Specifically, the support shaft (not shown) that supports the upper roll of reverse coater 1) 2 is raised to separate the upper roll from the lower roll (or the lower roll of reverse coater 1) 2 is moved upward. A support shaft (not shown) supporting the rolls may be lowered to separate the lower rolls from the upper rolls. ) with U
The shielding member 133 is operated as shown in FIG. 2 to shield UV irradiation from the V lamp 131, and even if the veneer 4 is stopped, residual heat from the UV lamp 131 is not transmitted to the stopped veneer 4. This prevents the veneer 4 from catching fire.

In addition, as a means for detecting whether or not the single FF1i4 is cut, in addition to the phototube 154, a torque motor may be provided in the second winding machine 15 to detect when the torque becomes O. Furthermore, detection may be performed using a rotation detector or the like.

When starting the second veneer coating device 3, first the veneer 4 (or the veneer 4 that has been wound into a roll and lined) is rolled up by the first winding machine 9 and transferred to the second veneer. The veneer 4 installed on the second veneer installation machine 10 is transferred to the roller 104, the flow coater 1) 1,
The veneer 4 is fed by a roll 104 and passed through a reverse coater 1) 2, a setting section 12, a UV dryer 13, a roll 152, a guide roll 153, and a second winder 15. It will be wound up by the machine 15.

That is, the veneer 4 is moved toward the second winder 15 by the drive of the roll 104 and the motor (not shown) of the second winder 15, and the coating machine 1) (flow coater 1) 1 and the reverse coater 1) Painting is applied to the veneer 4 in 2).

The veneer 4 coated with the coating machine 1) is placed in the setting section 12.
It is guided by the heater 122 in the setting section 12 to volatilize the solvent in the UV curing resin applied to the veneer 4.

Then, the veneer 4 that has passed through the setting section 12 is exposed to UV
The dryer 13 cures the UV cured resin.

The veneers 4 that have passed through the UV dryer 13 are heated, so if they are rolled up in this state, the veneers 4 will stick to each other. The air is guided to the exit side of the UV dryer 13 to improve the cooling effect, and then the air heated by heat exchange in the UV dryer 13 is also guided to the setting section 12, thereby making effective use of the heat source.

The veneer 4 cooled by the blower 14 is passed through the rolls 152,
It is wound up into a roll by the second winding machine 15 via the guide roll 153.

(Effects of the Invention) The veneer coating device of the present invention comprises a veneer installation machine that installs veneers, a coating machine that includes upper and lower rollers that coat the surface of the veneer from this veneer installation machine, and a coating machine that coats the surface of the veneer. A dryer for drying the surface of the veneer coated by the machine, and a winder for winding up the veneer dried by the dryer, and when the winder winds up the veneer, When the veneer is cut halfway, the veneer is cut because a control device is provided to control the roller to move away from the coating position of at least one of the upper and lower rollers of the coating machine. When the machine is stopped, at least one of the upper and lower rollers of the coating machine is controlled to move away from the coating position. This state is released, and deformation of the roller can be prevented.

The veneer coating apparatus of the present invention includes a veneer installation machine that installs veneers, a coating machine that coats the surface of the veneer from this veneer installation machine with UV curing resin, and a veneer coated by this coating machine. a UV lamp for curing the UV curing resin of the board; a winding machine for winding up the veneer with the UV curing resin cured by the UV lamp; When the board is cut in the middle, a shielding member is provided to block UV irradiation from the UV lamp, so even if the veneer stops, residual heat from the UV lamp will not be transferred to the stopped veneer. It has a unique effect that can prevent the veneer from catching fire.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram schematically showing a veneer coating apparatus of the present invention, and FIG. 2 is a shielding member when a veneer is cut in the second veneer coating apparatus of FIG. 1. FIG. 1... Veneer coating device, 2... First veneer coating device (veneer coating device), 3... First veneer coating device (veneer coating device),

Claims (2)

[Claims] (1) A veneer installation machine that installs veneers, a coating machine that consists of upper and lower rollers that coat the surface of the veneers from this veneer installation machine, and dries the surface of the veneer coated by this coating machine. and a winding machine for winding up the veneer dried by the dryer, and when the winding machine winds up the veneer, when the veneer is cut in the middle, A veneer coating apparatus characterized in that a control device is provided for controlling at least one of the upper and lower rollers of the coating machine so that the roller is moved away from a coating position. (2) A veneer installation machine that installs veneers, a coating machine that coats the surface of the veneer from this veneer installation machine with UV curing resin, and a veneer installation machine that coats the surface of the veneer with UV curing resin coated by this coating machine. A UV lamp for curing, a winding machine for winding up the veneer with the UV curing resin cured by the UV lamp, and a winding machine that cuts the veneer in the middle when the winding machine winds up the veneer. and a shielding member for shielding UV irradiation from the UV lamp.