JP2018164997A - Molding apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a molding apparatus that can apply a coat, continuously and stably, to a base material without enlarging the molding apparatus.SOLUTION: The molding apparatus for applying a coating material 3 to at least one of a front surface side and a rear surface side of a base material 2 and pressing the base material 2 from both sides thereof to obtain a molded object 4 comprises: a conveyor unit 10 having a pair of conveyor belts 11 arranged in a vertical direction, and a compression unit 20 disposed on the rear surface side of each of the conveyor belts 11, wherein the conveyor unit 20 includes a base material charging port 25 at an upper part of the conveyor unit and the conveyor belt 11 for conveying the base material 2 thrown from the base material charging port 25 between the conveying belts and conveying the base material from an upper side to a lower side while compressing by the compression unit 20, and the base material charge port 25 has a liquid reservoir space 26 for storing a coating material 3 between the base material 2 and a surface of the conveyor belt 11, which is formed when the base material 2 is charged.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a molding apparatus that applies a coating material to at least one of the front and back surfaces of a substrate and pressurizes the substrate from both sides to obtain a molded body.

  As this type of molding apparatus, an apparatus in which a coating apparatus such as a roll coater or a curtain coater that coats a coating material on a substrate is provided in the transport unit is known (for example, see Patent Document 1).

  FIG. 3 is an explanatory view of a forming apparatus 100 using the roll coater 103a. As shown in this figure, in this molding apparatus 100, a double belt press device 103 having a pair of a pressure unit 101 and a transport unit 102 provided with a transport belt 102a is used. A coating device 104 is installed on the upstream side. Due to such an arrangement, the application of the coating material 105 to the base material 106 and press molding can be performed on a continuous conveyance line.

JP 2009-234248 A

  However, if the coating device 104 is provided alongside the double belt press device 103, the molding device 100 (molding line) becomes larger (see FIG. 3). If the roll coater 104a is used as in the molding apparatus 100 of FIG. 3, the coating material 105 attached to the surface of the roll coater 104a is cured with time, and a cured film is formed on the roll coater 103a. If a cured film can be formed, then the supply amount of the coating material 105 to the base material 106 may fluctuate. If so, continuous and stable coating on the base material 106 cannot be performed. Since the supply of the coating material 105 is to continuously rotate the roll coater 104a, it is almost impossible to remove the cured film formed on the roll coater 104a during the supply (during the operation of the roll coater 104a). Is possible.

  The present invention has been proposed in view of such circumstances, and an object of the present invention is to provide a molding apparatus that enables continuous and stable application to a substrate without increasing the size of the apparatus. There is.

  In order to achieve the above object, the molding apparatus of the present invention is arranged in the vertical direction in a molding apparatus that applies a coating material to at least one of the front and back surfaces of a substrate and presses the substrate from both sides to obtain a molded body. A conveying section having a pair of conveying belts, and a pressurizing section disposed on the back side of each of the conveying belts, the conveying section having a base material inlet at the top, and a base material inlet The base material introduced from above is sandwiched between the transport belts and conveyed from the top to the bottom while being pressurized by the pressure unit. When the base material is introduced into the base material inlet, A liquid storage space for storing the coating material is formed between the material and the surface of the conveyor belt.

  According to the shaping | molding apparatus of this invention, since it becomes the structure mentioned above, the continuous and stable application | coating to a base material is attained, without enlarging an apparatus.

It is the schematic front view which showed typically the shaping | molding apparatus which concerns on one Embodiment of this invention. (A) is a principal part expansion schematic front view of the shaping | molding apparatus, (b) is a schematic front view which shows an example of equipment adjustment of the molding apparatus. It is a schematic front view which shows an example of the conventional shaping | molding apparatus.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. First, the basic configuration of the molding apparatus 1 will be described.

  The main molding apparatus 1 is an apparatus that obtains a molded body 4 by applying the coating material 3 to at least one of the front and back surfaces of the base material 2 and pressing the base material 2 from both sides. The molding apparatus 1 includes a transport unit 10 having a pair of transport belts 11 and 11 arranged in the vertical direction, and pressurizing units 20, 20,. And. The transport unit 10 has a base material inlet 25 at the top, and the base material 2 fed from the base material inlet 25 is sandwiched between the transport belts 11, 11 and added by pressure units 20, 20,. It conveys from top to bottom while pressing. In the base material inlet 25, liquid storage spaces 26 and 26 for storing the coating material 3 are formed between the base material 2 and the surfaces of the conveyor belts 11 and 11 when the base material 2 is input. It has become so.

  Here, as the base material 2, for example, a plate-like material such as a glass mat or a wooden board material can be used. Further, as the coating material 3, for example, a reactive curing type in which a curing agent is mixed with a coating liquid is used, but it is not limited thereto. In addition, for application to the base material 2, not only forming a coating layer on the front and back surfaces of the base material 2, but also impregnation into the base material 2 and further transmitting from one surface to the other surface of the base material 2. It is also included that the coating material 3 is distributed throughout the entire interior including the inside.

  Next, the detailed configuration and effects of the molding apparatus 1 will be described with reference to FIGS. 1 and 2.

  The main forming apparatus 1 has two conveying belts 11, 11 along the vertical direction facing each other, a base material 2 is disposed between them, and the base material 2 is pressed while being conveyed from the top to the bottom. 4 is a device to obtain 4. That is, as shown in FIG. 1, it is an apparatus formed by arranging a known double belt press-like apparatus in the vertical direction.

  The conveyance unit 10 of the molding apparatus 1 includes such a pair of conveyance belts 11, 11 and a plurality of rolls 12, 12,. The molding apparatus 1 may have a configuration in which a release sheet feeder is added so that the release sheet is disposed between the substrate 2 to be supplied and the conveyor belt 11.

  Further, pressure units 20, 20,... And heaters 21, 21,. As the pressure unit 20, various types such as a fixed roller method, a circulation roller method, an isobaric method, and a sliding shoe method can be used. Alternatively, the pressure units 20, 20, and 20 provided on the one conveyance belt 11 side may be the driving side, and the pressure units 20, 20, and 20 provided on the other conveyance belt 11 side may be the fixed side. Moreover, it is good also as a structure which replaced with the heater 21 downstream from the conveyance line and installed the cooler.

  Between the conveyor belts 11 and 11, as shown in the overall view of FIG. 1 and the enlarged view of the main part of FIG. 2A, the base material 2 is allowed to pass and the coating material 3 can flow vertically. A gap 29 having a thickness for forming a gap is formed. And the base material inlet 25 is formed in the upper part. When the base material 2 is input from above toward the base material input port 25, the roll 12 is curved in the vicinity of the base material input port 25 between the base material 2 and the conveyor belts 11 and 11. Due to the shape, a space wider than the gap 29 is formed. This space becomes a liquid pool space 26 for storing the coating material 3 to be supplied to the lower conveyance path.

  As shown in FIG. 1, when the coating material 3 is dropped from the coating material supply devices 28, 28 into the liquid pool spaces 26, 26 formed on both sides of the base material 2, the coating material 3 is transferred to the conveyor belts 11, 11. It follows the gap between the substrate 2 and the conveyor belts 11 and 11 according to the conveying operation. In this case, in consideration of the transport speed of the transport belt 11, the width of the gap 29, the dropping speed of the coating material 3, the temperature of the heater 21, etc., the liquid pool 27 as shown in FIG. , 27 can be adjusted. By appropriately adjusting the amount of the liquid reservoirs 27 and 27 so as to be substantially constant, the supply amount per unit time is constant without interrupting the coating material 3 with respect to the front and back surfaces of the substrate 2. Can be supplied.

  Moreover, what is necessary is just to dripping the coating material 3 only to the surface side, when apply | coating the coating material 3 only to one surface of the base material 2. FIG. Furthermore, when the coating material 3 is supplied to the base material 2 through which the liquid passes, such as a nonwoven fabric, the supply may be made only on one side.

  In this way, the base material 2 is supplied with the attachment material 3 substantially uniformly over the entire length on the front and back surfaces, and is pressed by the pressing portions 20 and 20 from the front and back sides while being conveyed to form a molded body 4 having a desired thickness. Molded.

  Further, the heating by the heater 21 contributes not only for curing the coating material 3 but also for improving the fluidity of the coating material 3. Therefore, the amount of liquid pool in the liquid pool spaces 26 and 26 also varies by adjusting the temperature of the heater 21. Further, the molding time can be shortened by adjusting the temperature of the heater 21.

  As described above, the molding apparatus 1 has the liquid reservoir space 26 so that the liquid reservoir 27 of the coating material 3 can be formed in the upper base material inlet 25. 3 can be supplied stably and continuously. Moreover, since it is not necessary to provide the coating apparatus 103 (refer FIG. 3), such as the roll coater 103a (refer FIG. 3), the shaping | molding apparatus 1 can be comprised in a compact size, and equipment cost can also be held down. Moreover, since the conveyance part 10 is distribute | arranged to the up-down direction, the space of the up-down direction in a factory can be utilized effectively.

  Since the present forming apparatus 1 is configured not to use the roll coater 103a (see FIG. 3), the supply amount of the coating material 3 to the surface of the substrate 2 due to the formation of a cured film on the surface of the roll coater 103a (see FIG. 3). Of course, fluctuations cannot occur.

  Further, at the downstream (lower end) of the conveying line of the main forming apparatus 1, the coating material 3 applied to the base material 2 is reaction-cured, and the conveying belt 11 (or the conveying belt 11 and the release sheet) is from the substrate 2. The base material 1 which the coating material 3 hardened | cured and shape | molded on the front and back sides is carried out apart.

  When the release sheet is not used, there is a possibility that the coating material 3 remains on the surface of the conveyor belt 11 and a cured film may be formed. However, from the position on the conveyor belt 11 until the portion returns to the base material inlet 25. Since the cured film can be removed with a scraper or the like, problems caused by the cured film on the conveyor belt 11 can be avoided. Moreover, you may make it remove automatically by providing a film removal apparatus together.

  As described above, in order to perform continuous and stable coating on the base material 2, it is necessary to supply an appropriate amount of the coating material 3 to the liquid pool space 26 so that the liquid pool amount becomes substantially constant. is there. For this purpose, as described above, it is also necessary to adjust the width dimension of the gap 29 between the conveyor belts 11 and 11.

  As shown in FIG. 2 (b), the forming apparatus 1 can adjust the width dimension of the gap 29. For example, the rolls 12 and 12 on one or both sides of the left and right transport belts 11 may be moved so that the rolls 12 and 12 are close to each other or away from each other, or installed on rolls 12 having different diameters. You may make it replace.

  The adjustment of the gap 29 between the conveyor belts 11 and 11 is not only performed so that the width dimension of the gap 29 is constant along the vertical direction, but may be varied depending on the height position of the roll 12. For example, in the most upstream roll 12, the gap 29 is narrowed for the purpose of narrowing the coating material 3 so that the coating material 3 is not applied more than a predetermined amount, and the thickness of the molded body 4 is made downstream of the gap 29. What is necessary is just to set so that the gap | interval 29 may be expanded sequentially.

DESCRIPTION OF SYMBOLS 1 Molding apparatus 2 Base material 3 Coating material 4 Molded body 10 Conveying part 11 Conveying belt 20 Pressurizing part 21 Heater 25 Base material inlet 26 Liquid pool space 29 (between conveying belts)

Claims (2)

In a molding apparatus that applies a coating material to at least one of the front and back surfaces of a substrate and presses the substrate from both sides to obtain a molded body,
A transport unit having a pair of transport belts arranged in the vertical direction, and a pressurizing unit disposed on the back side of each of the transport belts,
The transport unit has a base material inlet at the top, and transports the base material introduced from the base material inlet from the top to the bottom while being pressed between the transport belts and pressurized by the pressure unit. And
The base material inlet has a liquid storage space for storing the coating material between the base material and the surface of the transport belt when the base material is input. Molding equipment. In claim 1,
A molding apparatus characterized in that a gap between the conveying belts can be adjusted.

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