KR100838225B1 - How to Form Printed Patterns on Furniture Doors - Google Patents

Abstract

A method for forming a printed pattern on doors of furniture is provided to simplify the production cost by penetrating the ink of a printed paper into a paint layer and to reduce the production cost by forming the desirable patterns on a number of doors of furniture at a time by loading plural doors on the upside of a movable plate. A method for forming a printed pattern on doors(11) of furniture comprises the steps of: preparing the doors of the furniture having a paint layer on the surface; printing desirable patterns on a surface treated paper(13) by an inkjet printer; loading the door on the upside of a movable plate(15) having a number of through-holes(15a) while covering the surface of the door with the printed surface of the paper; transferring the movable plate and an elevator(18) right under a chamber(19); keeping airtightness with the chamber by moving up the movable plate and the elevator at the same time by a lifting unit(20); sucking and fixing the door to the upside of the movable plate by keeping space(16) between the movable plate and the elevator through a vacuum line(17) of the movable plate; stopping injection of the air by bringing the paper into contact with the upside of the door by blowing the air into the chamber, and then penetrating ink of the pattern printed on the paper, into the paint layer of the door by keeping the inside of the chamber at 180~200°C in a vacuum state of 3~5kg/cm^2 for 20~40 seconds by discharging the internal air of the chamber through an air discharge hole(23); releasing the inner vacuum state of the chamber and moving down the movable plate and the elevator by the lifting unit; and unloading a finished product by returning the movable plate and the elevator to the initial position and removing the paper from the movable plate at the same time.

Description

How to form print patterns on furniture doors {omitted}

The present invention relates to a method of forming a print pattern on the furniture door to express the desired pattern on the surface of the workpiece (furniture doors, such as sinks, dressers, cabinets, shoe cabinets, chest of drawers, etc.) coated with paint, By applying paint on the surface of the workpiece and drying the production of furniture doors, various types of printing patterns can be expressed directly on the surface of furniture doors that appear outside. A method of forming a print pattern on a furniture door that makes it possible.

In general, furniture doors commonly used in homes (sinks, cabinets, dressing cabinets, shoe cabinets, chests of drawers, etc.) are usually installed in one or two pieces to be opened and closed.

Conventionally, such furniture doors were formed by cutting natural wood to a predetermined thickness and then processing them, so that various patterns could be directly formed on the surface. However, in recent years, prefabricated furniture has been widely used for mass production and ease of logistics transfer.

This prefabricated furniture is not only the main body, but also the doors are made of Medium Density Fiber Board (aka MDF), and then coated with paint on its surface to form a high gloss UV coating layer. You get a product.

However, as the paint layer or UV coating layer is weakly formed on the surface of the furniture door, it is limited to form various patterns on the finished furniture door surface. There is a limit.

In view of the above problems, related companies are researching and developing various methods for expressing various types of printing patterns on paint applied furniture doors.

As a technique known to date, various patterns are expressed using a transfer paper.

1 is a flowchart showing a conventional pattern display method, and FIGS. 2A to 2C are longitudinal cross-sectional views for explaining the conventional method. The coating layer is formed by painting and drying the paint on the surface of the workpiece 1 formed of a heavy non-heavy fiber board. After forming (2), the dried surface is polished to maintain flatness.

After the coating layer 2 is polished as described above, the transfer paper having the desired pattern is printed on the upper surface of the coating layer 2, as shown in FIG. 2A, and the press is heated at 150 to 250 ° C. (not shown). After pressing for 1 to 5 minutes to allow the pattern on the transfer paper to be transferred to the paint layer 2 as it is, the release paper 4 is removed. Thus, a dry transfer layer 3 is formed on the paint layer 2 as shown in FIG. 2B. .

Subsequently, screen printing or stencil work of ordinary means is performed to the outside of the dry transfer layer 3 transferred to the paint layer 2, that is, the margin, to form the screen printing or stencil working layer 5. The coating agent is applied to a predetermined thickness so that the coating layer 6 is formed thereon as shown in FIG. 2C, and dried for 1 to 5 minutes at the first 50 to 150 ° C and 5 to 30 minutes at the second 150 to 300 ° C. You will complete the furniture door that is exposed to the outside.

However, such a conventional method is applied to the surface of the workpiece to dry the coating to form a coating layer, and then the surface is polished to attach a transfer paper, the desired pattern is transferred to the coating layer by thermal compression, and then to the surface Screen printing or stencil working layer and coating layer are formed in turn, and then the desired pattern is formed on the surface of the furniture door through various processes of drying at high temperature. Therefore, the process is cumbersome and the productivity decreases, thus the cost of producing furniture door There was a problem that is elevated.

In addition, since the dry transfer layer is formed on the polished paint layer, it is transported between processes, and thus, a fatal problem may occur in which the paint layer or the dry transfer layer is inadvertently peeled off, or when the foreign matter is stained.

In addition, there is a method of forming a desired pattern on the polished paint layer by using a realistic method, and then applying another paint on the upper surface by spraying, or forming a high gloss UV coating layer and drying to obtain a finished product. However, these methods had to be equipped with expensive real-world machines, so they were hardly feasible in a small industry, and even if they were purchased, they could not realize various colors due to the limitations of the real-world machines.

In addition, only large patterns (flowers, etc.) are formed on the workpiece (about the size of plywood) having a predetermined size, so that the pattern displayed to the outside in the process of cutting the workpiece to a desired size is irregular and irregular in order to make furniture doors. There was also a problem.

The present invention has been made in order to solve such a conventional problem, the paper in which the desired pattern is printed on the surface of the furniture door completed through the same process as the conventional process, rather than forming the pattern in the process of coating the coating method The purpose of this is to allow the ink printed on the paper to penetrate into the paint layer in the chamber that maintains the high temperature vacuum and then print the pattern directly to the outside of the furniture door.

According to an aspect of the present invention for achieving the above object, the method comprising the steps of preparing a workpiece that is a known furniture door formed with a paint layer on the surface, outputting a desired pattern to the surface-treated paper with an inkjet printer, and the paper Loading the upper surface of the movable plate on which the printing surface of the cover is in contact with the surface of the workpiece to form a myriad of holes, transferring the movable plate and the elevator to be located directly below the chamber, and directly below the chamber. Elevating the movable plate and the elevator located at the same time by the lifting means to maintain the chamber and airtightness; and maintaining the space between the movable plate and the elevator in a vacuum state through the vacuum line of the movable plate to operate the workpiece. Adsorption and fixing on the upper surface of the plate, and blows air into the chamber so that the paper adheres to the upper surface of the workpiece. Then to stop the injection of air and vacuum in the interior of the chamber to discharge the air in the chamber through the air exhaust hole 3 ~ 5kg / cm ^2, maintained for 20 to 40 seconds in 180 ~ 200 ℃ is printed on the paper Causing the patterned ink to soak into the coating layer of the workpiece; and releasing the vacuum in the chamber and lowering the movable plate and the elevator by lifting means; and initializing the movable plate and the elevator. Provided is a method for forming a print pattern on a furniture door, characterized in that the step of reducing the furnace and simultaneously removing the paper from the movable plate to unload the finished product.

The present invention has several advantages as compared to the conventional method of thermally transferring a desired pattern onto an upper surface of a polished paint layer and then sequentially forming a screen printing or stencil working layer and a coating layer.

First, by directly adhering the printed paper on the surface of the furniture door (finished product) produced by the same process as before, the ink printed on the paper is infiltrated into the coating layer under the high temperature of vacuum so that the pattern is formed. This greatly simplifies the production process, thereby maximizing the productivity of the furniture doors, as well as reducing the defect rate due to unnecessary inter-process transfers to almost zero.

Second, by loading a plurality of furniture doors on the upper surface of the movable plate at the same time, it is possible to form a desired pattern on a large number of furniture doors at the same time, greatly reducing the production cost, and accordingly the furniture doors with various patterns It will be available at a lower price.

Third, it is possible to produce high-quality furniture doors even in small-scale companies because it forms patterns on the paint layers of furniture doors by implementing various colors by printers without having expensive photorealistic machines.

Hereinafter, the present invention will be described in more detail with reference to FIGS. 3 to 8 as an embodiment.

FIG. 3 is a flowchart for explaining the present invention, FIG. 4 is a plan view of a heater implementing the present invention, and FIGS. 5A and 5B are longitudinal cross-sectional views of FIG. 4 for explaining the present invention. While preparing the workpiece 11, which is a known furniture door, on which the 12 is formed, the color pattern 14 to be formed on the coating layer 12 of the workpiece 11 is surface-treated using a known inkjet printer. Output to the sheet 13 (S100, S200).

However, the pattern printed on the sheet 13 is not necessarily limited to a color pattern, and a black and white pattern may be formed if necessary, but is not necessarily limited thereto.

After the workpiece 11 and the printed sheet 13 on which the pattern 14 is to be printed are prepared, respectively, by the method described above, as shown in FIG. After covering to abut on the surface of the) and loading it on the upper surface of the movable plate 15 is formed a myriad of holes (15a) as shown in Figure 4 (S300).

At this time, the bottom surface of the movable plate 15 has a recessed structure so that a space 16 is formed, and a vacuum line 17 is provided at one side thereof, and the movable plate 15 is operated at a lower step in the subsequent process. The elevator 18 which raises a plate is located as shown in FIG. 5A, and the movable plate 15 and the elevator 18 are sequentially moved by a chain (not shown).

After that, the movable plate 15 and the elevator 18 loaded with the workpiece 11 are positioned to move sequentially under the chamber 19 by the movement of the chain, and then the movable plate 15 and the elevator. 18 is simultaneously lifted by lifting means 20, such as a hydraulic cylinder, to be in close contact with the bottom surface of the chamber 19, as shown in Figure 5b. (S400, S500)

At this time, the chamber 19 is maintained at a high temperature of about 180 ~ 200 ℃ by the heater 21 embedded therein, the air inlet 22 for supplying compressed air into the chamber 19 and In order to maintain the inside of the chamber 19 in a vacuum state, an air discharge hole 23 for discharging air through another vacuum line 26 is formed, and the air inlet hole 22 and the air discharge hole 23 are formed. Are provided with check valves 24 and 25 so that air does not flow back.

After the movable plate 15 and the elevator 18 are closely adhered to the bottom surface of the chamber 19 by the operation as described above, the space 16 of the space 16 is moved through the vacuum line 17 of the movable plate 15. By discharging the air therein, the space 16 formed between the movable plate and the elevator is maintained in a vacuum state so that the workpiece 11 is absorbed and fixed to the upper surface of the movable plate 15. (S600)

After the workpiece 11 is adsorbed and fixed to the upper surface of the movable plate 15 by vacuum pressure, air is blown into the chamber 19 through the air inlet hole 22, so that the paper 13 is processed ( 11) to be in close contact with the upper surface of the air and stop the injection of air and discharge the air in the chamber 19 to the air discharge hole 23 so that the interior of the chamber 19 to a vacuum state of 3 ~ 5kg / cm ² At the same time, for 20 to 40 seconds, the ink of the pattern 14 printed on the paper 13 is infiltrated into the coating layer 12 of the workpiece 11 as shown in FIGS. 7 and 8. The desired pattern 14 is displayed to the outside of 11) (S700).

This is because the paper 13 is surface-treated, and the ink printed on the paper is not completely infiltrated, so that a certain amount of ink is separated from the paper under the high temperature vacuum state, soaks into the paint layer 12 to express the pattern 14. This is possible because

After the pattern 14 printed on the paper 13 is formed into the paint layer 12 of the workpiece 11, the vacuum line for discharging air through the air discharge hole 23 is reversed as described above. At the same time, the operation of (26) was stopped and the air was introduced into the chamber 19 through the air inlet 22 to release the vacuum state, and at the same time, the elevating means 20 was restarted to rise to the top dead center. The movable plate 15 and the elevator 18 are lowered to the bottom dead center. (S800)

After the movable plate 15 and the elevator 18 are lowered to the bottom dead center by the operation as described above, the movable plate 15 and the elevator 18 are returned to the initial position, and at the same time, the sheet is removed from the movable plate 15. By removing 13, the finished product 27 as shown in FIG. 7 is unloaded (S900).

At this time, if the coating layer 12 applied to the surface of the workpiece 11, which is the known furniture door, is a UV coating layer, the UV coating layer has a gloss, and thus the color pattern can be more clearly expressed. Has the advantage of being.

In addition, loading the plurality of workpieces 11 covered with the paper 13 on the upper portion of the movable plate 15 at the same time is able to produce several furniture doors at once, which is more advantageous for mass production, thereby Unlike the conventional method of adopting the transfer method, the cost of producing furniture doors can be greatly reduced.

Hereinafter, the present invention will be described according to Examples.

[Step 1: Preparation of Workpiece]

The known to-be-processed object 11 in which the coating layer 12 was formed in the surface exposed to the outside is prepared.

The coating layer 12 formed on the surface of the workpiece 11 includes all kinds of coating layers, such as a general coating layer, a resin coating layer, a UV coating layer.

[Step 2: Printing]

The pattern 14, which has been color graphics or has been input by a computer, is printed on the surface-treated paper 13 using a known inkjet printer.

The paper 13 on which the desired pattern 14 is printed using the inkjet printer is not coated like the surface of the photo paper, but the ink ejected from the inkjet printer is not completely absorbed by the paper 13, and the ink is applied. It does not need to be limited to the surface treatment so as to keep it dry but not dry.

[Step 3: Loading Workpiece]

A pattern 14 printed on the sheet 13 is covered to abut the paint layer 2 of the workpiece 11 and then loaded onto the upper surface of the movable plate 15 which is pulled out of the chamber 19. In this case, if the surface area of the movable plate 15 is larger than the cross-sectional area of the workpiece 11, several workpieces 11 may be simultaneously loaded on the upper surface of the movable plate 15 as shown by the dashed-dotted line shown in FIG. This is advantageous for mass production.

At this time, the paper 13 may be fixed with a tape or glue so as not to move on the upper surface of the workpiece 11, but in the present invention, in order to simplify the process, the paper 13 may be subjected to surface tension by vacuum pressure in a subsequent process. (13) to be in close contact with the surface of the workpiece (11) with a strong force.

[4th Step: Moving Moving Plate and Elevator]

Since at least one workpiece 11 is loaded on the upper surface of the movable plate 15, a chain (not shown) wound around the sprocket fixed to the rotating shaft is moved, and thus the movable plate 15 and the lower surface thereof are positioned. The elevator 18 sequentially moves directly below the chamber 19.

Since the mechanical configuration and action of sequentially moving the movable plate 15 and the elevator 18 are the same as in the conventional transfer means, detailed illustration and description thereof will be omitted.

[5th step: movable plate and elevator lift]

The hydraulic cylinder, which is the lifting means 20, drives the movable plate 15 and the elevator 18 located at the bottom dead center to the top dead center, so that the upper surface of the movable plate 15 is intimately connected to the bottom surface of the chamber 19. By doing so, the chamber 19 is kept closed.

At this time, the driving of the hydraulic cylinder of the lifting means 20 is a controller (not shown) as the limit switch or a proximity sensor installed at a point where the movable plate 15 is located directly below the chamber 19. To be executed automatically.

Driving the lifting means 20 by the controller to sense the movement of the movable plate 15 is also known in the art and is not specific thereto.

[Step 6: Adsorbing Workpiece on Moving Plate]

When the movable plate 15 loaded with the workpiece 11 is raised to the top dead center by the elevating means 20 to maintain the airtight with the chamber 19, the vacuum line 17 of the movable plate 15 is controlled by the controller. Through the air discharged in the space 16 between the movable plate 15 and the elevator 18 to the outside through the workpiece 11 placed on the upper surface of the movable plate 15, the movable plate 15 Adsorption is fixed automatically.

This is possible because a myriad of holes 15a are drilled in the movable plate 15 so as to pass through the space 16.

[Step 7: Forming Pattern on Paint Layer under Vacuum and High Temperature]

After the workpiece 11 is sucked and fixed to the upper surface of the movable plate 15 in the previous step, compressed air is supplied through the air inlet 22 formed in the chamber 19 for a predetermined time, and thus the workpiece 11 is placed on the workpiece 11. The paper 13 is closely adhered to the workpiece 11, and in such a state, the inlet air is momentarily shut off and at the same time, the air discharged through the vacuum line 26 sucks the air in the chamber 19. The inside of the chamber 19 is kept in a vacuum of 3 to 5 kg / cm ² .

At this time, the interior of the chamber 19 is maintained at 180 ~ 200 ℃ according to the heat generated by the heater 21 embedded in the chamber, if the heating temperature is 180 ℃ or less surface of the paint layer 12 When the amount of ink permeates is small, the sharpness is lowered. On the contrary, when the temperature becomes 200 ° C. or more, the paint layer 12 which is vulnerable to heat may be damaged (discolored, lifted up, etc.) by high temperature.

Therefore, when the inside of the chamber 19 is maintained for 20 to 40 seconds in a vacuum state of 3 to 5 kg / cm ² and a high temperature of 180 to 200 ° C., the ink of the pattern printed on the paper becomes the coating layer of the workpiece 11 ( 12, the pattern 14 soaked as shown in Fig. 8 is printed on the paint layer as it is.

That is, the process of forming the pattern 14 in the coating layer 12 which is the surface of the to-be-processed object 11 inside the chamber 19 which keeps vacuum and high temperature is completed.

At this time, if the time of maintaining the high temperature vacuum state is less than 20 seconds, the depth of ink penetrating into the paint layer 12 is shallow, and the sharpness falls, and if it is 40 seconds or more, the depth of ink penetrating into the paint layer 12 is further deep. This is a disadvantage for productivity, which in turn raises the cost of production.

In the process of introducing or discharging air through the air inlet 22 and the air outlet 23, check valves having opposite roles to the air inlet 22 and the air outlet 23, 24 and 25 are installed so that air does not flow into the air discharge hole 23 in the process of introducing air into the chamber 19, and the air is drawn out of the chamber 19 and maintained in a vacuum state. In the process, no air is introduced into the air inlet 22.

[Step 8: Return of Moving Plate and Elevator]

After stopping the operation of extracting air into the air discharge hole 23 through the vacuum line 26 and at the same time supplying the outside air through the air inlet hole 22 to release the vacuum state. The movable plate 15 and the elevator 18 are simultaneously lowered to the bottom dead center by the elevating means 20.

At this time, the vacuum release of the space 16 formed between the movable plate 15 and the elevator 18 releases the movable plate 15 while the movable plate 15 and the elevator 18 descend from the chamber 19. It is possible because the air in the space 16 quickly exits through the through hole 15a formed in the chamber.

[Step 9: Unloading Finished Product]

As shown in Fig. 4, the drive shaft on which the chain is wound is rotated in the opposite direction to reduce the movable plate 15 and the elevator 18 to the initial position, and at the same time, the finished product placed on the upper surface of the movable plate 15 By separating the paper 13 from the 27 and unloading the finished product from the movable plate 15, the new workpiece 11 and the paper 13 are loaded on the upper surface of the movable plate 15 and continuously. You will be able to work.

Although the technical spirit of the present invention has been described in detail according to the above-described preferred embodiment, it should be noted that the above-described embodiments are for the purpose of description and not of limitation.

In addition, it will be understood by those skilled in the art that various changes can be made within the scope of the technical idea of the present invention.

1 is a flow chart showing a conventional pattern display method

2A to 2C are longitudinal cross-sectional views for explaining the conventional method.

3 is a flowchart for explaining the present invention.

4 is a plan view of a heater implementing the present invention.

Figure 5a is a longitudinal cross-sectional view of the movable plate and the elevator is transferred directly below the chamber in the present invention

Figure 5b is a longitudinal cross-sectional view of the movable plate and the elevator in contact with the chamber at the same time by the lifting means in the present invention

Figure 6 is a state diagram showing the separation of the pattern-printed paper from the known furniture door

7 is a state in which the pattern is printed on the paint layer of the furniture door

8 is a longitudinal cross-sectional view of FIG.

Explanation of symbols for the main parts of the drawings

11: workpiece 12: paint layer

13: paper 14: glyph

15: movable plate 16: space

17, 26: vacuum line 18: elevator

19: chamber 20: lifting means

22: air inlet hole 23: air outlet

24, 25: check valve 27: finished product

Claims (4)

Preparing a work piece 11 which is a known furniture door having a paint layer 12 formed on the surface thereof, and outputting a desired pattern 14 to the surface-treated paper 13 by an inkjet printer; Loading the upper surface of the movable plate 15 on which the printing surface is covered with the surface of the workpiece 11 to form a myriad of holes 15a, and the movable plate and the elevator 18 directly under the chamber 19; Transporting it to be located in a room, simultaneously elevating a movable plate and an elevator positioned directly below the chamber by elevating means 20 to maintain airtight with the chamber 19, and the movable plate 15 The vacuum space 17 of the movable plate and the elevator to maintain the space (16) in a vacuum state to fix the workpiece 11 to the upper surface of the movable plate 15, the chamber 19 Blows air into the upper surface of the workpiece 11 to Rock, and then stop the injection of air, and air discharge holes 23 through the chamber 19 a vacuum of 3 ~ 5kg / cm ² to the inside of the outlet to the chamber the air within 20 to 40 seconds in 180 ~ 200 ℃ The ink of the pattern 14 printed on the sheet 13 soaks into the coating layer 12 of the workpiece 11, and releases the vacuum inside the chamber 19. Lowering the movable plate 15 and the elevator 18 by the elevating means 20, and reducing the movable plate 15 and the elevator 18 to their initial positions, 13) a method of forming a print pattern on the furniture door, characterized in that to perform the step of unloading the finished product (27) sequentially. The method according to claim 1, A method of forming a print pattern on a furniture door, characterized in that the coating layer (12) applied to the surface of the workpiece (11) which is the known furniture door is a UV coating layer. The method according to claim 1, Method of forming a print pattern on the furniture door, characterized in that for loading the plurality of workpieces (11) covered with the paper (13) on top of the movable plate (15) at the same time. The method according to claim 1, Method for forming a print pattern on the furniture door, characterized in that using the hydraulic cylinder as the lifting means (20).

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