JPS605185B2 - Method and apparatus for manufacturing decorative laminates having the same pattern at a predetermined position on the base plate - Google Patents

Description

Detailed Description of the Invention The present invention uses a laminator to continuously print a pattern-printed sheet-like material (hereinafter simply referred to as a printed sheet) at a predetermined position on the surface of each sheet of plywood of a certain size without the pattern shifting. The present invention relates to a method and device for adhering the same.

Conventionally, a laminator that has been widely used in this industry applies an adhesive 3 to the surface of a plywood 1 such as plywood using a roll coater 2, and then passes through a dryer 4 to remove moisture in the adhesive layer. This is a mechanical equipment that performs a series of operations in which continuous sheet-like materials 5 such as paper are evaporated to an appropriate degree, and then continuous sheet-like materials 5 such as paper are stacked and adhered by applying pressure with a press roll 6.

By the way, a laminator is a device that continuously attaches continuous sheet materials to mirror-leaf plywood, so if the plywood insertion, conveyance speed, and connection of each section are not perfectly adjusted, it may be necessary to Problems arise such as the plywood that follows the sent plywood overlaps, or the gaps between the plywood are too large, resulting in waste of sheet-like materials. That is, the plywood conveying mechanism of the laminator has two different mechanisms connected in series, as shown in FIG.

One has two sections of a roll coater that applies adhesive, six sections of press rolls that attaches a sheet to the plywood, and the other has four sections of a dryer that dries the adhesive applied to the surface of the plywood.

The roll mechanism transports the plywood by sandwiching it between upper and lower rolls, but in the dryer 4 section, the plywood 1 is placed on two or three chains 7 that move in parallel and is transported.
At this time, in order to prevent the plywood 1 from slipping on the chain 7, metal pieces 8 (hereinafter simply referred to as "metme") with a length of 3 to 4 pieces are attached to the chain 7 at regular intervals wider than the length of the plywood. This mechanism is designed to push the plywood forward.
Therefore, when the plywood is transferred from the dryer section 4 to the press roll 'D6 section, if the speeds of both sections are exactly the same or the speed of the dryer 4 section is faster than the speed of the press roll 6 section, the plywood 1 is transferred from the dryer section 4 to the press roll 'D6 section, as shown in Figure 2. Problems may occur, such as the jammer 8 damaging the rear part of the stand 1 at the time of separation from the dryer section, or plywood overlapping within the press roll 6 section. Therefore,
The secondary laminator is designed to set the feed speed of the 6th section of the press roll slightly higher than the feed speed of the 4th section of the dryer so that the laminator 8 can be drawn into the 6th section of the press roll before damaging the rear part of the plywood 1. There is.
In other words, a laminator is a mechanical equipment designed with the sole purpose of attaching successive sheets of plywood to each sheet of plywood quickly and efficiently.

On the other hand, the pattern cycle of conventional printing sheets is also to meet the above purpose of the laminator, and the length of plywood is various such as 6 shaku, 8 shaku, 9 shaku, 10 shaku, 12 shaku, etc., and furthermore, depending on the plywood manufacturer. Due to the different methods of applying elongation to plywood, printing manufacturers create a structure in which the pattern of the printing sheet does not feel strange even if it is attached to plywood of any length and in any position, so printing manufacturers use only one pattern. The period is set to 2 shaku, 4 shaku, 16 inches, etc., which are close to the least common multiple of the standard length of plywood, and these are connected to form a repeating pattern.

Therefore, when a decorative board manufactured using a conventional laminator is applied to a wall surface, it tends to become monotonous because the adjacent patterns are discontinuous and the pattern cycles of 2 shaku, 4 shaku, and 16 inches are repeated. You can't get the luxury feel of hand-pasted high-quality search boards or wallpaper. As mentioned above, due to the purpose of the laminator, the mechanism, the diversity and irregularity of the length of the plywood, and the pattern period of the printing sheet, a laminator is used to adjust the pattern of the printing sheet at a predetermined position on the plywood and paste it. There are no examples of this idea being put into practice.

Therefore, as a result of studying the conventional problems, the inventor of the present invention determined that the pattern period A of the printing sheet is 1/n (n = 1, 2, 3, etc.・) plus the feed margin Q, the length is 10Q, and the feed speed of the printing sheet is set lower than the feed speed of the plywood conveying claw so as to accurately correct only the feed margin length nQ of the printing sheet. The transmission is adjusted so that the speed becomes faster, and the actuator is used to correct speed errors caused by elongation of the printing sheet, elongation of the plywood transport chain, or slippage of the plywood. A printed sheet is attached so that the pattern is aligned. Note that the printed sheet in the present invention refers to a sheet of common paper or a synthetic resin sheet on which various patterns are printed.

Plywood also includes commonly used wood boards such as plywood and particle board, asbestos boards, and inorganic boards such as slate. The present invention will be explained in more detail with reference to the drawings.

However, Fig. 3 shows the patterns P, , P2, P3, etc. of the printing sheet.
..., period A and R,, R2, R3...
..., interval B and plywood 1-1, 1-2, 1-3...
This is a drawing drawn to explain the relationship between...and differs from the actual process. It is assumed that the pattern of the printed sheet has a length that appears twice (n=2) on the surface of one plywood board. First, as shown in Figure 3, plywood 1-1
When the leading end Q, and the handle end P, of the printing sheet 5 are stuck together with the press roll 6, the plywood 1-1 and the printing sheet 5 move at the feed speed of the press roll 6 am/min, As time passes, the point P3 of the printing sheet 5 reaches the point P,.

At this time, unless the point Q2 of the plywood 1-2, which is moving on the conveying chain at a speed of bm/min, also reaches the point Q, the printing sheet cannot be pasted to the predetermined position on the plywood. In other words, P3 point is P
, the distance A to reach the point, the time taken, and Q2
'Point power Mi Q. The distance to reach the point, i.e. R, ~R
The two time clouds moving at speed b over time B must match. Therefore, if we change the equation of equal = Hatanori Wishire, we get a = chopsticks b = bsha n (n = 2).

The pattern period A of consecutive printing sheets is 1/n of the plywood conveyance interval B of the laminator (n=1, 2, 3...
...・) plus the feed margin Q (several from the number side) + length damage +
For example, let Q be Q<.

Then, the a:bsha n formula is a=bsha n=b hill poison Q) n=
Main; = b (10 blue) Q<o ground effect Q<o, that is, 10 effect Q<1 Therefore, a<b, resulting in the printing sheet not being able to be pasted on the plywood feeding mechanism of the laminate.

Therefore, Q>0 must be satisfied. On the other hand, the mechanical equipment for carrying out the present invention may consist of a structure in which the press roll drive section 9 of the laminator is connected to a transmission device 11 and an actuating device 12 that are independent of the plywood conveying chain drive section 10 of the dryer section; The chain drive section 101 for plywood conveyance and the press roll drive section 9 are composed of an independent transmission and actuating device connected to each other.
It is preferable to connect the two devices to the press roll drive section 9 as shown in the figure, since it does not reduce production capacity and allows fine adjustment of the speed.

Transmission device,. is a=bsha n (n=1, 2, 3...
It is used to adjust the speed according to the speed a of the press roll 6 calculated from the formula (...) or the speed b of the plywood conveying chain, and is a continuously variable speed with a low speed ratio, for example, about 1:1.01. Use a machine.

The transmission 11 and the press. The actuating device 12 connected between the wheel drive section 9 or the chain drive section 10 for conveying plywood is a conventional one consisting of a combination gear and a motor, and a=b.
It is installed to correct speed errors that occur due to elongation of the printed sheet, slippage of the plywood in the press roll section, elongation of the plywood transport chain, etc., which cannot be calculated using the Sha-n method. For example, suppose that a printing sheet is attached to a plywood positioning calendar at the beginning of work, but the pattern of the printing sheet gradually begins to lag halfway through the work. Accordingly, the motor of the actuator may be activated to increase the rotational speed of the press roll section or to reduce the speed of the plywood conveying chain. Any misalignment of the pattern during work between the plywood and the printed sheet is detected using a phototube or the like, and adjustments are made by automatically activating the actuating device or by visually activating the actuating device. Next, the present invention will be described with reference to an example. A laminator is used to make plywood with a thickness of 2.7 sides x medium 912 sides x length of 1825 legs, and the plywood is made into plywood so that the same pattern is always placed at a predetermined position on the plywood. When trying to attach woodgrain pattern printed paper (23rd/day), we considered what the periodicity of the woodgrain pattern and the feed speed of the press roll should be set to.

However, the laminate spacing B of the dryer section of the laminator is 1886 ribs, the feed rate b is 40/min, and a continuously variable machine and an actuator are connected to the drive section of the press roll section.

First, the pattern period A of the printing paper was such that the same wood grain pattern was repeated twice (n = 2) on the surface of one sheet of plywood, and Q was set to 2 fences.

Then, Akotei+.

Ceremony area A = scale 12 = 945 side, that is, the circumference of the printing plate is 9
It is sufficient to create printing paper using the one on the 45 side. Based on the above values, the press roll feed speed is calculated using the formula a: b = n.

85 (enemy/min) It became.

The continuously variable transmission connected to the press roll section drive unit was adjusted according to this value, and the desired decorative board was obtained by performing the adhesion work. As described above, according to the present invention, {1} It is now possible to mechanically attach a printed sheet to a fixed position calendar, which until now could only be done by hand or by attaching each leaf, and the effect of reducing production costs through mass production is significant.

[{2'Also, the mechanical equipment for carrying out the present invention can be realized simply by connecting an actuating device and a continuously variable transmission to the press roll drive section of a conventional laminator, and has the advantage of being easy to implement.

[Brief explanation of the drawing]

FIG. 1 is a side view schematically showing a conventional laminator. FIG. 2 is a partial side view schematically showing the continuous portion of the press roll section and dryer section of the laminator. FIG. 3 is an explanatory diagram showing the relationship between the pattern period of the printing sheet, the spacing between the tabs, and the length of the plywood. FIG. 4 is an explanatory diagram showing the positional relationship in which a transmission and an actuator are attached to a conventional laminator. 1 - plywood, 2 - roll coater, 3 - adhesive, 4 - dryer, 5 - sheet-like material, 6 - press roll, 7 - chain for conveying plywood, 8 - metal piece, 9 - press roll drive part,
10- Chain driving part for conveying plywood, 11- Changing machine, 12
1. An actuating device, 13. A motor attached to the actuating device, and 14. A main motor that drives the press roll and the chain for conveying plywood. Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Scope of Claims] 1. When pasting a sheet-like material with a pattern printed on it using a laminator, a mechanical equipment for pasting a continuous sheet-like material on the base plate of each leaf, the pattern period of the continuous printed sheets A is 1/n (n=1, 2,
The length B/n+α is the sum of the feed margin α and 3.
The printing sheet is continuously fed into the laminator at a speed a (m/min) and the speed b (m/min) of the base plate is a=
A method for manufacturing a decorative board, in which the printed sheet is pasted so that the same pattern is placed at a fixed position on a base plate so that the relationship bA/Bn is established. 2 Roll coater 2 that applies adhesive 3 to the top surface of base plate 1
Then, in the dryer 4 that dries the base plate 1 while conveying it with a chain, and then in the laminator device that continuously adheres the continuous sheet-like material 5 to the upper surface of the base plate 1 while applying pressure with a press roll 6. , the feed speed of the press roll 6, characterized in that an actuating device 12, a transmission 11, and a drive motor 14 are sequentially connected to either the drive part 9 of the press roll 6 or the drive part 10 of the base plate conveying chain 7; A laminator device that makes it possible to freely change the feed speed of the chain 7 for conveying the base plate.