JP2008302463A - Cutting powder disposing facility and cutting powder disposing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cutting powder disposing facility certainly removing cutting powder after cutting a sandwich panel. <P>SOLUTION: This cutting powder disposing facility to remove the cutting powder produced after the belt type sandwich panel P made by expanding and forming an expandable resin core material between face materials arranged opposed to each other on front and back both surfaces is cut in the cross direction, is furnished with atomizing devices 24, 25 to atomize water mist on a surface of the sandwich panel P and flash nozzles 28, 29 to flash air against the surface of the sandwich panel P on which the water mist is atomized. The direction to flash the air is set so as to blow the cutting powder away in the opposite carrying direction to the direction in which the sandwich panel P is carried. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a cutting powder processing facility and cutting powder for removing cutting powder generated after cutting a band-shaped sandwich panel in which a foamable resin core material is foam-molded between face materials opposed to both front and back surfaces. It relates to a processing method.

  An example of a process for manufacturing a strip-shaped sandwich panel is disclosed in Patent Document 1 below. The sandwich panel has, for example, a structure in which a rigid polyurethane foam is sandwiched between a thin upper surface material and a lower surface material, and is used as a heat insulating panel or the like. In the manufacturing process of this sandwich panel, the rolls are drawn out from the roll around which the upper surface material is wound and the roll around which the lower surface material is wound. Such a sandwich panel is continuously manufactured in the form of a strip, and is cut into a panel of a predetermined size by a cutting device. As this cutting device, for example, a saw-shaped foam cutting cutter or a tip saw as shown in Patent Document 2 below is used.

JP-A-11-268109 Japanese Utility Model Publication No. 5-74470

  When the band-shaped sandwich panel is cut with a chip saw or the like, cutting powder is generated. Although it is necessary to remove such cutting powder, in the case of the above-mentioned polyurethane foam, the cutting powder adheres to the panel surface due to static electricity and is not easy to remove completely. For example, there is a method in which a dust collector is installed and cutting is performed while sucking the cutting powder. However, it is difficult to completely remove the cutting powder from the panel surface due to the problem of static electricity. In addition, there is a direction to install an air curtain at the exit of the cutting room and blow off the cutting powder, but after the cutting powder rises, there is a possibility that it will re-adhere on the panel surface, so that a sufficient effect is achieved. I can't. In addition, a method of wiping the panel surface with a painted mop is also conceivable, but there is a problem of how to remove the lump of attached cutting powder, and the work is complicated and the panel surface may be damaged. .

  This invention is made | formed in view of the said situation, The subject is providing the cutting powder processing equipment and cutting powder processing method which can remove the cutting powder after cutting a sandwich panel reliably.

In order to solve the above problems, the cutting powder processing equipment according to the present invention is:
A cutting powder processing facility for removing cutting powder generated after cutting a band-shaped sandwich panel in which a foamable resin core material is foam-molded between face materials arranged opposite to both front and back surfaces,
A device for spraying water mist on the surface of the sandwich panel;
And a device for blowing air against the surface of the sandwich panel sprayed with water mist.

  The operation and effect of the cutting powder processing facility having such a configuration will be described. In this facility, a band-like sandwich panel is cut in, for example, the width direction (a direction orthogonal to the panel transport direction), and then water mist is sprayed on the panel surface. By spraying the water mist, it is possible to eliminate the state in which the cutting powder easily adheres due to static electricity, and to prevent the cutting powder from flying up. By spraying water mist, the cut powder can be collected and blown off with air. As a result, the cutting powder after cutting the sandwich panel can be reliably removed.

  In the present invention, the spraying device and the spraying device are respectively disposed on both the front and back surfaces of the sandwich panel, and the air blowing direction is blown in the direction opposite to the conveying direction with respect to the direction in which the sandwich panel is conveyed. Is preferably set.

  By arranging the spraying device and the spraying device on both the front and back surfaces of the sandwich panel, the cutting powder adhering to both the front and back surfaces can be efficiently removed. In addition, by blowing the cutting powder in the direction opposite to the conveying direction, the cutting powder can be blown away in the direction away from the sandwich panel as much as possible, and the probability of reattachment can be reduced.

  In the present invention, the angle formed by the air blowing direction and the sandwich panel conveying direction is preferably set to 45 ° to 60 °.

  By setting to such an angle, the cutting powder on the panel surface can be efficiently removed. In addition, when there is no sandwich panel, the air sprayed from the front and back spraying devices will collide with each other, but if set to the above angle, the impact sound when air collides will be mitigated. can do.

  In the present invention, it is preferable that a mechanism for maintaining a constant clearance between the nozzle tip of the spraying device and the sandwich panel surface is provided.

  By providing such a mechanism, the gap between the nozzle tip and the panel surface can always be kept constant regardless of the difference in the thickness of the sandwich panel, and the air blowing pressure can be made appropriate.

In order to solve the above problems, the cutting powder processing method according to the present invention is:
A cutting powder treatment method for removing cutting powder generated after cutting a band-shaped sandwich panel in which a foamable resin core material is foam-molded between face materials arranged opposite to both front and back surfaces,
Spraying water mist on the surface of the sandwich panel;
And a step of spraying air onto the surface of the sandwich panel after the water mist spraying step.

  According to such a configuration, as described above, by spraying water mist, it is possible to eliminate the state in which the cutting powder easily adheres due to static electricity, and to prevent the cutting powder from flying up. By spraying water mist, the cut powder can be collected and blown off with air. As a result, the cutting powder after cutting the sandwich panel can be reliably removed.

  A preferred embodiment of a sandwich panel cutting device according to the present invention will be described with reference to the drawings. FIG. 1 is a side view and a plan view showing the configuration of a sandwich panel manufacturing facility. FIG. 2 shows a cross-sectional structure of a manufactured sandwich panel P (hereinafter abbreviated as panel P). The panel P has a form in which a foamed hard polyurethane resin layer 2 (corresponding to a foamable resin core material) is sandwiched between the upper surface material 1 and the lower surface material 3. The thickness of the upper and lower surface materials 1 and 3 is, for example, about 100 μm, and FIG. 2 is exaggerated.

<Configuration of manufacturing equipment>
The upper surface material 1 and the lower surface material 3 are the same material, and for example, a soft material such as paper (such as craft paper or resin caninate paper) or aluminum foil is used. The upper surface material 1 is wound around a roll 10 positioned relatively above. The lower surface material 3 is wound around a roll 11 positioned relatively below. Each of the rolls 10 and 11 is rotationally driven around a predetermined axis by a feeding device (not shown). Thereby, the upper surface material 1 and the lower surface material 3 are drawn out from the rolls 10 and 11 in a strip shape.

  The head 12 injects a hard polyurethane resin between the upper surface material 1 and the lower surface material 3. Only the lower surface material 3 is preheated on the injection table 18 and passes through the nip roller 13, and then the foaming gradually proceeds and is conveyed by the double conveyor 14.

  After passing through the double conveyor 14, the strip-shaped panel P is cut by the cutting device 15 in the width direction of the panel P (direction perpendicular to the transport direction). On the downstream side of the cutting device 15, a cutting powder processing facility 16 is disposed adjacent to the cutting device 15. A panel P cut by the cutting device 15 is transported to the cutting powder processing facility 16 and processing for removing the cutting powder generated at the time of cutting is performed. The specific structure of the cutting device 15 is not limited to a specific structure, and an appropriate structure such as a tip saw can be used. The cut panel P is accumulated in the accumulation unit 17.

<Configuration of cutting powder processing equipment>
Next, a detailed configuration of the cutting powder processing facility 16 will be described with reference to FIG. When the panel P is cut, polyurethane foam cutting powder is generated. This cutting powder is likely to adhere to the panel surface due to static electricity, and there is a method of installing a dust collector duct to suck the cutting powder, but it is difficult to remove it reliably. There may be a case where the cutting powder rising from the panel surface re-adheres to the panel surface, and there is a demand for a facility that can reliably remove the cutting powder. Therefore, in the present invention, the cutting powder processing facility 16 illustrated in FIG. 3 is provided.

  In FIG. 3, the cut panel P is conveyed from the left side to the right side in the figure. As a mechanism for carrying, a driving roller 20 and a pinch roller 21 are provided, and the pinch roller 21 is unitized by a connecting bar 22. The pinch roller 21 is urged toward the driving roller 20 by a pressure spring 23. Therefore, the panel P is conveyed downstream while being sandwiched between the drive roller 20 and the pinch roller 21. The pinch roller 21 has a surface made of an elastic body such as rubber.

  Spraying devices 24 and 25 are provided on both the front and back surfaces of the panel conveyance path, and spray water mist on the panel surface. Spray water mist to the extent that water droplets adhere to the panel surface. By spraying water mist, the influence of static electricity can be removed. Close to the downstream side of the spray devices 24 and 25, exhaust ducts 26 and 27 of a dust collector (not shown) are provided on both front and back surfaces. The cut powder blown off is sucked and removed by the exhaust ducts 26 and 27. It is preferable to attach the water mist to the face material in the form of a mist as small as possible.

  The time for spraying the water mist from the spray devices 24 and 25 can be controlled to be appropriately changeable. Further, the relative distance between the spraying devices 24 and 25 and the panel surface can be changed according to the thickness of the panel P and the like.

  Near the downstream side of the exhaust ducts 26 and 27, flush nozzles 28 and 29 (hereinafter abbreviated as nozzles) of an air curtain (corresponding to a spraying device) are arranged on both the front and back sides of the panel conveyance path. From the nozzles 28 and 29, air is blown onto the panel surface. The pressure of air to be blown can be controlled according to the purpose or panel quality. For example, when it is not necessary to remove completely or even if fine powder adheres, there is no problem, blower type wind power may be used, and the pressure can be set to 0.01 MPa or less. When it is necessary to completely remove the cutting powder, a strong pressure of 0.2 to 0.4 MPa is set.

  According to such a configuration, it is possible to blow off and remove the cut powder in a state in which water mist is sprayed and collected. Spraying water mist eliminates the effects of static electricity and ensures separation from the panel surface.

  The direction θ of the air sprayed from the nozzles 28 and 29, that is, the angle θ formed by the air blowing direction and the transport direction of the panel P is preferably set in the range of 45 ° to 60 °. When the panel P does not exist between the nozzles 28 and 29, the air from the upper and lower nozzles 28 and 29 directly collide with each other, but a large impact sound is generated depending on the angle. For example, when θ = 90 °, there is a problem that noise is increased. By setting the angle as described above, it is possible to prevent a noise problem from occurring. In addition, the air blowing direction is opposite to the conveying direction of the panel P, and the cutting powder can be effectively removed from the panel surface.

  In the line for continuously producing the panel P as shown in FIG. 1, since the cutting powder processing equipment 16 is arranged on the outlet side of the cutting device 15, the amount of water mist is set to be large, and the face material 1 , 3, the surface of the panel P can be cooled by the effect of heat of vaporization. In addition, about the face materials 1 and 3 which comprise the panel P, the material (for example, resin and metal) which does not have water absorption is used.

  Rollers 30 and 31 are arranged close to the downstream side of the nozzles 28 and 29, and further conveyed to a downstream process. When air is blown from the nozzles 28 and 29 to the panel P, a force to blow the panel P acts, but the panel P is not blown because it is conveyed while being pinched by the drive roller 20 and the pinch roller 21. Can be reliably conveyed.

  The nozzles 28 and 29 and the rollers 30 and 31 are supported by support bodies 32 and 33 so as to be integrally movable. Thereby, even when the thickness of the panel P changes, the gap δ between the nozzles 28 and 29 and the panel surface is kept constant. This gap δ is set to about 5 mm, for example. However, if the gap δ becomes too large, the pressure applied to the panel surface becomes weak, which is not preferable because the air pressure needs to be set high in advance.

<Another embodiment>
In the present invention, various modifications can be considered for the specific configuration and material of the sandwich panel, and the sandwich panel is not limited to a specific one. Arbitrary well-known apparatuses can be used also about a spraying apparatus and a spraying apparatus. For example, an air spraying device other than an air curtain may be used for the spraying device.

Side view showing configuration of sandwich panel manufacturing equipment Diagram showing the cross-sectional structure of a sandwich panel Schematic showing the configuration of the cutting powder processing equipment

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Upper surface material 2 Hard polyurethane resin layer 3 Lower surface material 15 Cutting device 16 Cutting powder processing equipment 20 Drive roller 21 Pinch rollers 24, 25 Spraying devices 26, 27 Exhaust duct 28, 29 Flash nozzle P Sandwich panel

Claims (5)

A cutting powder processing facility for removing cutting powder generated after cutting a band-shaped sandwich panel in which a foamable resin core material is foam-molded between face materials arranged opposite to both front and back surfaces,
A spraying device for spraying water mist on the surface of the sandwich panel;
A cutting powder processing facility comprising: a spraying device that sprays air onto a surface of a sandwich panel sprayed with water mist.   The spraying device and the spraying device are respectively arranged on both the front and back surfaces of the sandwich panel, and the air blowing direction is set so that the cutting powder is blown away in the transporting reverse direction with respect to the direction in which the sandwich panel is transported. Cutting powder processing equipment characterized by   The cutting powder processing equipment according to claim 2, wherein an angle formed by a direction in which air is blown and a direction in which the sandwich panel is conveyed is set to 45 ° to 60 °.   The cutting powder processing according to any one of claims 1 to 3, wherein a mechanism for maintaining a constant clearance between the nozzle tip of the spraying device and the sandwich panel surface is provided. Facility. A cutting powder treatment method for removing cutting powder generated after cutting a band-shaped sandwich panel in which a foamable resin core material is foam-molded between face materials arranged opposite to both front and back surfaces,
Spraying water mist on the surface of the sandwich panel;
And a step of spraying air on the surface of the sandwich panel after the water mist spraying step.

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