JPH11227073A - Processing method of laminated shaped body and device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the dimensional accuracy of a laminated shaped body, which is produced by laminatingly bonding a paper sheet, the thickness of which easily changes by being influenced by humidity. SOLUTION: A laminated shaped body W is housed in a box 10 so as to measure the dimensions to the laminating direction of the laminated shaped body W in order to decrease the humidity in the box by a predetermined value when the dimensions of the laminated shaped body W obtained by the measurement is larger than the predetermined target dimensions or increase the humidity in the box by a predetermined value when the dimensions of the laminated shaped body W obtained by the measurement is smaller than the predeterined target dimensions and maintain the changed humidity for a predetermined period of time in order to repeat the above-mentioned cycle until the measured dimensions reach the target dimensions. When the laminated shaped body reaches the target dimensions, a moistureproof film is preferably formed on the surface of the laminated shaped body. A device used for the execution of this method is equipped with the box 10, in which the laminated shaped body, a dimensional measuring machine 15, which measures the dimensions to the laminating direction of the laminated shaped body W, a humidity controlling machine 23 for controlling the humidity in the box and a controlling device 20 for controlling the actions of the dimensional measuring machine and of the humidity controlling machine.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for processing a laminated body formed by laminating and adhering material sheets made of paper or the like whose thickness changes under the influence of humidity so as to have a target size. .

[0002]

2. Description of the Related Art As a method of manufacturing a laminated molded body by laminating and bonding material sheets such as paper, there is, for example, a method shown in FIG. In this method, first, a paper sheet P on which an adhesive that is melted by heating to generate an adhesive force is applied to the back surface is
The X roller of the hot roller 31 which has been sent to the upper surface of the intermediate laminated body Wa laminated on the elevating table 30
At the same time as being heated by reciprocation in the direction, it is pressed and bonded to the upper surface of the intermediate laminate Wa. The XY scanner 34 provided with the laser torch is moved according to the contour shape (slice data) of the modeled object corresponding to the height position of the bonded paper sheet P under CNC control by the controller 35. Is reflected by a mirror built in the mirror box 33 and the XY scanner 34, is irradiated downward from the laser torch, and moves the paper sheet P adhered to the upper surface of the intermediate laminate Wa along the molding contour M3. And cut it. Before or after this, cutting along the outer contour line M1, the inner contour line M2, and the dividing line M4 is also performed. When these cuttings are completed, the paper roll Pa and the collecting roll Pb rotate, and a new portion of the paper sheet P is sent to the upper surface of the intermediate laminate Wa, and the above-described press bonding and cutting are repeated to repeat the intermediate lamination. The height of the body Wa increases. And when it reached the total height of the laminate, the intermediate laminate Wa was taken out,
By removing the outer frame portion Wb and the unnecessary portion Wc cut at the dice, a desired laminated structure can be obtained.

[0003]

The paper sheet P, which is a material of such a molded product, expands and contracts due to moisture absorption and drying, and particularly has a large expansion and contraction in the thickness direction. For this reason, there is a problem in that immediately after the molding, even if the target dimensions are satisfied, they expand and contract under the influence of the humidity of the surrounding air, and the dimensional accuracy is reduced. An object of the present invention is to solve such a problem.

[0004]

SUMMARY OF THE INVENTION A method for treating a laminated object according to the present invention is characterized in that a laminated object formed by laminating and adhering material sheets made of paper or the like whose thickness changes under the influence of humidity has a desired size. The present invention relates to a method for processing a layered object to be processed as described above, and stores the layered object in a box, measures the dimension of the layered object in the stacking direction, and obtains the dimension of the layered object obtained by the measurement. If the target size is larger than a predetermined target size, the humidity in the box is decreased by a predetermined value, and if the size is smaller than the target size, the humidity in the box is increased by a predetermined value and a cycle for maintaining the target size for a predetermined time is set to the target size. It is characterized by repeating until it is.

[0005] In the processing method described in the preceding paragraph, it is preferable to form a moisture-proof film on the surface of the laminate when the laminate has a target size. By doing so, the change in expansion and shrinkage due to moisture absorption and drying becomes small thereafter.

In addition, the apparatus for processing a layered object according to the present invention performs processing such that a layered object formed by laminating and bonding a material sheet made of paper or the like whose thickness changes under the influence of humidity has a target size. The present invention relates to a processing apparatus for a laminated body, a box housing the laminated body, a dimension measuring device for measuring a dimension of the laminated body in a stacking direction, and a humidity controller for adjusting humidity in the box body. If the dimension of the stacked body measured by the dimension measuring machine is larger than a predetermined target dimension, the humidity in the box is reduced by a predetermined value, and if smaller than the target dimension, the humidity in the box is predetermined. A control device that repeats a cycle of controlling the humidity adjuster so as to increase the value and maintain the humidity for a predetermined time until the dimension of the additive manufacturing body to be measured reaches the target dimension. That.

[0007]

1 and 2 show one embodiment of a method and an apparatus for processing a layered object according to the present invention. As shown in FIG. 1, the apparatus for processing a layered object according to this embodiment is substantially sealed and has a partition 1 inside.
1. A box 10 divided into a processing chamber R1 and an auxiliary chamber R2 by
have. Fans 1 are provided on the upper and lower parts of the partition 11, respectively.
2 is provided on the floor plate of the processing chamber R1, a support 13 for supporting the stacked body W, and a dimension of the stacked body W in the stacking direction (height direction in the figure) (hereinafter simply referred to as stacking. A dimension measuring machine 15 for measuring the dimension of the body W) is provided. The dimension measuring device 15 includes a column 16 fixed to the floor plate of the processing chamber R1 and standing upright, and a measuring head 17 having a height adjustable to the column 16, and the measuring head 17 is elastically attached downward. It has a feeler 17a whose tip is urged and lightly pressed against the upper surface of the layered object W. Thereby, the dimension of the additive manufacturing body W is automatically measured. The processing chamber R1 is provided with a door (not shown) for taking in and out the laminated structure W and the like.

A humidity sensor 21 and a temperature sensor 22 are provided in the processing chamber R1, and a humidifier 2 is provided in the auxiliary chamber R2.
A humidity controller 23 including a heater 3a and a dehumidifier 23b and a temperature controller 24 including a heater 24a and a cooler 24b are provided. The measuring head 17, the humidity sensor 21, the temperature sensor 22, the humidity adjuster 23, and the temperature adjuster 24
It is connected to a control device 20 for controlling the operation of the device of this embodiment. Further, the control device 20 includes the additive manufacturing body W
An input device 25 for inputting set values relating to height, humidity, temperature, etc., and having an operation / stop switch, a pilot lamp indicating an operation state, and the like is connected.

Prior to the start of the operation, the layered product W manufactured by the apparatus as shown in FIG. 3 is placed on the support table 13 as shown in FIG.
Is in contact with the upper surface of the layered object W. Additive manufacturing W
Is made parallel to the support table 13, and the dimension measuring device 15 measures the dimension of the layered object W. Input device 25
In advance, the target dimension of the layered object W in the stacking direction (hereinafter simply referred to as the target dimension of the layered object W), the relative humidity at the start of processing (for example, 30%), and the width of the relative humidity to be changed (for example, 5%) A set value such as a processing time (for example, 25 ° C.) and a predetermined time (for example, 12 hours) for keeping the formed laminate W in the processing chamber R1 set to the set relative humidity is input. In addition, in the manufacturing method of the laminated body W as described above, each paper sheet P is heated by the hot roller 31 at the time of laminating and bonding, and the moisture evaporates. Therefore, the laminated body immediately after the production is in a dry state. After that, since it absorbs moisture and expands, it is preferable that the manufactured laminate W at the time of manufacture be slightly smaller than the target size.

When an operation command is given from the input device 25, the control device 20 operates the processing device for the layered object according to the flowchart shown in FIG. During this operation, the fan 12 always operates to forcibly circulate the air in the processing chamber R1 and the auxiliary chamber R2. The control device 20 first measures the dimension of the layered object W by the dimension measuring device 15 (step 1).
00), the measured size is compared with a value obtained by subtracting a predetermined size (for example, 0.1 mm) from the target size (step 101). As described above, when the layered model W is slightly smaller than the target dimension, the measured dimension is smaller than the target dimension−0.1. Therefore, the control device 20 advances the control operation to step 102 to reduce the set relative humidity at the start of processing. The value is updated to a value obtained by adding 5% to the value (for example, 35%), and this state is maintained for a predetermined time (for example, 12 hours) (steps 103 and 104). The controller 20 activates the humidity adjuster 23 and the temperature adjuster 24, and the relative humidity in the processing chamber R1 detected by the humidity sensor 21 in the initial stage of the predetermined time is set in step 102.
Is the updated relative humidity, and the temperature sensor 22
The temperature in the processing chamber R1 detected by the above is maintained at a predetermined processing temperature, and the state is maintained (step 10).
3,104).

When the predetermined time has elapsed, the control device 20
Returns the control operation to step 100, measures the dimensions of the additive manufacturing body W as described above, and compares the measured dimensions with a value obtained by subtracting a predetermined dimension from the target dimension. If actual measurement <target dimension−0.1, steps 102 to 104 are repeated,
The set relative humidity is updated to a value obtained by adding 5% (for example, 40%) (the relative humidity in the processing chamber R1 also becomes the updated set relative humidity) and is maintained for a predetermined time. After the elapse of the predetermined time, the control device 20 returns the control operation to step 100 again to measure the dimension of the laminated body W, and repeats steps 100 to 104 as long as the measured dimension <the target dimension−0.1. As a result, the laminated body W gradually increases in water content and thus in size.

[0012] The size of the layered object W increases and the step 1
In 01, if the measured dimension <target dimension-0.1 is not satisfied,
The control device 20 advances the control operation to step 105, and compares the dimension actually measured in step 100 with a value obtained by adding a predetermined dimension (for example, 0.1 mm) to the target dimension. In this state, in many cases, actual measurement> target dimension + 0.1.
The control device 20 advances the control operation to step 106 and updates the set relative humidity to a value obtained by subtracting 5% (the relative humidity in the processing chamber R1 is also controlled to the updated set relative humidity). Maintain a predetermined time (step 107,
108). After a lapse of a predetermined time, the control device 20 returns the control operation to step 100 again to measure the dimension of the laminated body W, and in step 101, the measured dimension <the target dimension−0.0.
If 1, the steps 101 to 104 are repeated.
And in step 105, the actual dimension> the target dimension + 0.
If it is 1, steps 105 to 108 are repeated, and if the measured dimension is not larger than the target dimension + 0.1 in step 105, an OK signal is output by a pilot lamp and / or a buzzer and the operation is terminated.

According to the above-described embodiment, the additive manufacturing body W automatically reaches the target size within a tolerance of ± 0.1 mm. At the end of the operation, the laminated body W having the target dimension in the laminating direction is taken out of the processing chamber R1, and a moisture-proof coating such as a lacquer or an ultraviolet-curing paint is applied to the entire surface to form a moisture-proof coating (thickness For example, 50-1
00 μm). As a result, the additive manufacturing body W having the target dimensions does not expand and contract due to a change in the water content due to the influence of humidity in the air, and the accuracy does not decrease. The formation of the moisture-proof coating is not limited to the application of the moisture-proof paint, and may be performed by covering the laminated model W with a moisture-impermeable plastic thin film and making it adhere to the surface of the layered model W by vacuum.

In the above-described embodiment, the temperature in the processing chamber R1 which affects the relative humidity is always set to the predetermined processing temperature. In this case, the fluctuation of the relative humidity in the processing chamber R1 is reduced. preferable. Also, the additive manufacturing body W
Has a linear expansion coefficient of 1.3 to 1.4 × 10 ⁻⁶ / ° C., but if the temperature in the processing chamber R1 is always set to a predetermined processing temperature, the dimension of the layered product W due to a temperature change is increased. Since it does not change, it has a good effect on the improvement of the dimensional accuracy of the layered object W.

As described above, the laminated body W made of a paper sheet as used in the above embodiment is in a dry state immediately after the production, and the laminated body W absorbs moisture in the air. Since the speed is faster than the speed of releasing water,
As described above, the time required to make the laminated model W to a predetermined size is shortened by making the layered model W at the time of manufacture slightly smaller than the target size. In the above-described embodiment, the layered model W When the difference between the measured dimension and the target dimension of W is not within the predetermined tolerance, the width of the relative humidity to be changed is set to a fixed value of 5%, but when the difference between the measured dimension and the target dimension of the layered object W is large. May have a large width and a small width if the width is small. In this way, the measured dimension quickly approaches the target dimension and the overshoot is reduced, so that the time required for making the stacked body W to the predetermined dimension is further reduced. Instead of the width of the relative humidity, the predetermined time for holding the stacked body W in the processing chamber R1 set to the set relative humidity is changed according to the difference between the measured size and the target size of the stacked body W. It may be.

[0016]

According to the method and the apparatus for processing a laminated object according to the present invention, even if the dimensions are out of order after the production of the laminated object, it can be automatically set to a target size.
The dimensional accuracy of the layered object can be easily improved.

According to the method in which a moisture-proof film is formed on the surface of the laminate when the target dimension is reached, expansion and shrinkage due to moisture absorption and drying do not occur thereafter, so that the dimensional accuracy of the laminate is maintained. Can be.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of an apparatus used in an embodiment of a method for processing a layered object according to the present invention.

FIG. 2 is a flowchart of a method for processing the layered object shown in FIG.

FIG. 3 is an explanatory view of a method of manufacturing a layered object processed according to the present invention.

[Explanation of symbols]

Reference numeral 10: box, 15: dimension measuring machine, 20: control device, 23
... Humidity adjuster, W ... Laminated object.

Claims (3)

[Claims] 1. A method for processing a layered object, wherein a layered object formed by laminating and adhering material sheets made of paper or the like whose thickness changes under the influence of humidity is processed to have a target size. The molded body is housed in the box, the dimension of the laminated molded body in the stacking direction is measured, and if the dimension of the laminated molded body obtained by the measurement is larger than a predetermined target size, the humidity in the box is measured. A method of processing a layered object, wherein a cycle of decreasing a predetermined value and, if smaller than the target size, increasing the humidity inside the box to a predetermined value and maintaining the humidity for a predetermined time is repeated until the target size is reached. 2. A moisture-proof coating is formed on the surface of the layered object when the target dimension is reached.
3. The method for treating a layered object according to item 1. 3. An apparatus for processing a layered object formed by laminating and bonding a material sheet made of paper or the like whose thickness changes under the influence of humidity so as to have a target size. A box that accommodates the molded body, a dimension measuring machine that measures the dimension of the laminated molded body in the stacking direction, a humidity adjuster that adjusts the humidity inside the box, and the laminated molding that is measured by the dimension measuring machine If the size of the body is larger than a predetermined target size, the humidity in the box is reduced by a predetermined value, and if the body size is smaller than the target size, the humidity in the box is increased by a predetermined value and the humidity is maintained for a predetermined time. An apparatus for processing a layered object, comprising: a control device that repeats a cycle for controlling an adjusting machine until a dimension of the layered object to be measured reaches the target size.