JPS61293574A - Method and device for forcing paint into recess on veneer surface - Google Patents

Abstract

PURPOSE:To accurately force a paint into the recess on the surface of a veneer by pressing a nozzle having an injection port in the length identical to the width of the veneer, moving the veneer in the lengthwise direction and forcing the paint into the recess on the veneer surface while extruding the air in the recess. CONSTITUTION:A nozzle 2 provided with an extremely fine injection port 7 having the length identical to the width of a veneer 6 is pressed on the surface of the veneer in the widthwise direction, and a paint 10 is forced out from the injection port 7 of the nozzle 2 while moving forward the veneer 6 in the lengthwise direction. Accordingly, the paint 10 is forced into the recesses 24 and 25 on the veneer surface 6 while extruding air from the front to the rear end of the recess. Consequently, air is not included in the recess and the paint is accurately forced into the recess irrespective of the size, depth and shape of the recess. Besides, cracks are repaired with a single treatment, filling and wiping can be completely carried out, drying and sanding can be performed in one step, hence the device is simplified and the amt. of paint to be used is reduced.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a method and apparatus for press-fitting a paint such as a sealant or coloring agent into cracks formed on the surface of plywood, concave portions such as conduit grooves, and an apparatus therefor. It is something.

(Prior art) The surface of plywood has numerous depressions due to large cracks and conduit grooves, so when painting plywood and laminating printed paper, it is necessary to repair these depressions and smooth the surface. There is a need to.

In the case of large cracks, the putty is manually rubbed in using a metal spatula, and after drying, the putty is rubbed again on the putty that has shrunk and settled into the crack to smooth the surface. ing. Also, in the case of small cracks or small recesses such as conduit grooves, apply sealing paint several times using a reverse caulk or knife coater, drying and sanding each time. Furthermore, to wipe the conduit 1, apply the colored paint to the entire surface of the plywood with a sponge roll, and rub the colored paint into the conduit groove while scraping off the excess paint on the surface with a metal reverse roll or rubber roll. There is.

(Problem that U tries to solve) In this way, the conventional method of repairing concave parts in plywood is laborious and time-consuming! It was extremely inefficient. ``i!Nen Rebar Coater When using a knife coater, a number of these paint machines, dryers, and sanders are required depending on the number of times the coating is repeated, and the drawback is that the rebalance equipment becomes large and the equipment cost increases. Furthermore, when using a reverse coater, it is impossible to apply the paint into small recesses, and the paint must be applied with the air sealed inside the recesses. In such cases, sanding may open the recess again.To be careful, the conventional method using a reverse coater cannot completely obsolete the surface, and wiping also prevents paint from adhering to each conduit groove. It may become uniform and cause uneven coloring.

Moreover, in the conventional method, paint is applied to the entire surface of the plywood, and the paint is scraped off to some extent depending on the grade to prevent it from sticking to the smooth parts, and then sanded after drying. The large amount of paint used is extremely uneconomical, and this is also a factor in increasing the manufacturing cost of decorative plywood.

In view of the above-mentioned conventional problems, the present invention attempts to press-fit the paint evenly regardless of the size and depth of the recesses on the surface of the plywood, and also uses less paint and the equipment is simple. The present invention aims to provide an ideal method and device for press-fitting into recesses in plywood.

(Means for Solving the Problems) In order to achieve the above object, the present invention advances the plywood in the vertical direction by pressing a nozzle with the same length as the width of the plywood surface in the horizontal direction, In order to create a sealed state with the plywood, the paint is forced out onto the plywood surface through the extremely thin spout of the nozzle, and the paint is bitten into the recesses on the plywood surface to fill it. As the plywood moves forward, the paint is press-fitted from the front end of the recess toward the rear end while expelling the air inside the recess. , on the receiving roller, a nozzle with a very thin jet nozzle at the lower end and the same length as the width of the plywood is installed, and one end of the nozzle A10 is provided with an inlet for paint, and the other end is provided with an outlet for the paint. The pressure inlet and outlet are connected by a continuous ring vibrator with a pressure pump and a paint tank interposed.

(l! Example) Next, the method and apparatus for press-fitting paint into recesses on the surface of plywood according to the present invention will be explained in more detail based on the example shown in the drawings. is receiving coater 1
This is a nozzle that can be raised and lowered above the nozzle. This noz/
Both ends of I/2 support the machine frame 3Vc so as to be able to rise and fall, and are connected to screw rods of a pair of left and right air cylinders 4, 4 for adjusting the gap with the receiving roller 1.

Further, at the lower end of this nozzle fi/2, an extremely thin ejection lower whose length is the same as the width of the plywood 6 is formed from a thin protruding edge IC. Reference numerals 8 and 9 are an inlet and an outlet for the paint 10 formed on the left and right sides of the nozzle 2, and a forward ring vibrator 11 for the paint 10 is connected to the presser inlet 8 and outlet 9, and the forward ring pipe 1
A pressure pump 12 and a paint tank 13 are interposed between the two.

Reference numerals 14 and 15 denote a feed roller disposed behind the receiving coater 1 and a press roller disposed above the feed roller 1, and small diameter portions 14a and 15a are formed at intervals between the feed roller 14 and the press coater 15. are doing.

Further, both ends of the presser roller 15 are supported by the machine frame 3 so as to be able to rise and fall as in the case of the nozzle/L/2, and a pair of left and right air cylinders 16 are provided to adjust the gap with the feed loaf 14. The rods are connected. Reference numeral 17 designates a plurality of belt conveyors disposed behind the feed loaf 14, and above which a plate-pressed free loaf 18 is disposed. , 19 side support guides for the plywood 6 disposed on both the left and right sides of the belt conveyor 17, 2o is the feed shelf 14
This is a pair of upper and lower guide plates that penetrate between the small diameter portions 14 & 15a of the presser loaf 15 and prevent the plywood 6 from being transferred in an overlapping manner.
The rear end faces between the belt conveyors 17 on the rear side between the belts. Further, the upper guide plate 20 is held by a hanging rod 21. In addition, code 22 is a belt conveyor for carrying out,
23 is a drive motor for the receiving loaf 1 and the feeding roller 14;
The trap is a crack formed on the surface of the plywood 6, and 25 is a conduit groove.

Next, the above 1i! By way of example, a case where a filler is press-fitted into cracks 24 and conduit grooves 5 formed on the surface of plywood 6 will be described.

When the plywood 6 is continuously fed onto the belt conveyor 17 on the left side with the button in FIG. The belt conveyor 17 is transferred to the right while the upper button is pressed, and a pair of upper and lower guide plates 2
o, the ends are fed between the feed loaf 14 and the presser loaf 15 while being controlled so that the ends do not overlap, and then the receiving roller 1
and the nozzle 2. At this time, the ejection lower part of the nozzle μ2 that is in pressure contact with the surface of the plywood 60 is in a state where it is sealed by the surface of the plywood 60, and in this state, the self-blocking agent that is pressed against the board surface from the ejection lower part is as shown in FIG. plywood 6
As the pipe progresses, the cracks 24 and the air in the conduit groove δ are pushed out backwards, and the pipe is press-fitted from the front end to the rear end, and is filled in a bulging state.

If the plywood 6 that has been press-fitted into the recess is dried in a conventional manner, the cracks and paint in the conduit groove 5 will shrink, and the surface will be approximately the same as the smooth surface of the plywood, or slightly uneven. Since it is in the top condition, sanding it with a wide belt sander will remove the filler that slightly adheres to the smooth surface and the filler that is slightly protruding from the cracks 24 and the conduit grooves 25. This results in a smooth surface.

In addition, in the case of wiping the surface of the plywood 6 according to the above embodiment, a colored paint is press-fitted into the shu-kujiru-maki conduit groove 25 in the same manner as in the case of the sealant described above. Since the paint generally has a lower viscosity and greater fluidity than a filler, it is not filled so as to bulge above the half-container conduit groove 25 like a filler. l
(Effects) As detailed above, the method and device for press-fitting paint into recesses on the surface of plywood according to the present invention includes pressing a nozzle μ having a spout having the same length as the width of the plywood onto the plywood; Plywood vertically,
In other words, the paint is moved in a direction perpendicular to the nozzle, and the paint that is forced out from the spout onto the plywood surface is forced into the plywood while eliminating cracks and expelling air in the conduit grooves. Paint can be accurately press-fitted into the recess regardless of its size, depth, or shape. In addition, crack repair, sealing, and wiping can be completed in one press-fitting process, so licking, drying, and sanding only need to be done once, which can simplify equipment and shorten work time. Since the amount of paint used is small, it is economical, and we are confident that it will have a great effect on the production of decorative plywood.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the method and apparatus according to the present invention, FIG. 2 is a longitudinal sectional view showing the main parts of the same embodiment, and FIG.
Is the diagram partially cut away to show the main parts of the same embodiment? A side view and FIG. 4 are longitudinal cross-sectional views showing a state in which paint is press-fitted into a recess according to the same embodiment. 1...Receiving roller 26. Nozzle 5, flange 6, plywood 7, spout 8, pressure inlet 9, outlet 10, paint 11, ring pipe 12, pressure pump 13,
Paint tank 24... Crack 25... Conduit groove. Application agent Hisashi Matsumoto

Claims (2)

[Claims] (1) Press a nozzle with an extremely thin spout having the same length as the width of the plywood surface in the horizontal direction, and press out paint from the nozzle spout while moving the plywood forward in the vertical direction. A method for press-fitting a paint into a recess on a plywood surface, characterized in that the paint is press-fitted into a recess on a plywood surface from the front end toward the rear end while pushing out air. (2) On the receiving roller, a nozzle with an extremely thin jet nozzle at the lower end that is the same length as the width of the plywood is installed oppositely, and one end of the nozzle is provided with an inlet for injecting the paint, and the other end is provided with an outlet for the paint. A device for press-injecting paint into a recess on a plywood surface, characterized in that the pressure inlet and outlet are connected by a sequential ring pipe with a pressure pump and a paint tank interposed therebetween.