JP2007152222A - Method and apparatus for removing dust from film roll - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and apparatus for removing dust from a film roll capable of efficiently removing dust sticking to the surface of a film roll and preventing re-sticking of a foreign body or dust released from a film roll. <P>SOLUTION: The apparatus 10 for removing dust from a film roll is constituted of a suction port 32A disposed above a film roll 12 for sucking air, a particle counter 38 for counting the number of foreign particles sucked in, an air filter 62 for removing dust in the sucked air, an ionizer 60 for ionizing the clean air from which dust has been removed, a pair of air blowing ports 32B, 32B each disposed on either side of the suction port 32A for blowing the ionized clean air to the film roll 12 to generate an air current flowing from the film roll 12 to the suction port 32A, and a control device 44 for controlling the velocity and the angle of the clean air flow being blown out based on the distance between the surface of the film roll 12 and each of the air blowing ports 32B, 32B. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a dust removal method for a film roll and a dust removal equipment for a film roll, and more particularly to a technique for efficiently removing dust from a film roll surface by reducing the reattachment of a foreign matter peeled from the film roll surface to the film roll.

  Film rolls used in the plastics industry and the like are manufactured in a clean environment in which floating foreign substances are controlled because foreign matters, dust, dust, and the like adhere to the film roll surface and cause defects such as coating defects. However, since the film roll is not completely sealed at the time of packaging, foreign matters adhere to the surface of the film roll when it is transported from the manufacturing factory to the use / processing factory of the film roll. Therefore, before using / processing a film roll, the dust removal process which removes the foreign material adhering to the film roll surface is needed.

  As a dust removal method, Patent Document 1 discloses a method in which air having high cleanliness is blown at a high speed to separate foreign matter from the film surface and introduced into a nearby suction port for removal.

  FIG. 6 is a diagram showing an example of a film roll dust removal facility using a conventional dust removal method. The air shower room 1 is a sealed room that is assembled with panels and the like, an air jet device 2 is disposed in the upper part of the room, and the floor 3 is constituted by a coated floor. The air jet device 2 is a blower in which an air filter is incorporated, and clean air that has passed through the air filter is sprayed onto the film roll 4 at a high speed to peel off the foreign matter 5 attached to the surface of the film roll 4. The air in the air shower chamber 1 is sucked through the duct 6 and sent to the air jet device 2. Thereby, air circulates and clean air is continuously blown out from the air jet device 2, and the foreign material 5 is removed from the surface of the film roll 4.

The film roll 4 from which the foreign matter 5 has been removed is conveyed from the air shower chamber 1 to the processing chamber 7 for processing.
JP-A-10-309553

  However, the conventional dust removal equipment for a film roll has a problem that the foreign matter 5 peeled off from the film roll 4 diffuses and floats around the film roll 4, so that the floating foreign matter reattaches to the film roll 4.

  SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances. A dust removal method for a film roll and a dust removal equipment for a film roll that can prevent the foreign matter peeled off from the film roll from reattaching and can efficiently remove the surface of the film roll. The purpose is to provide.

  In order to achieve the above object, the invention according to claim 1 is a dust removal method for a film roll, wherein air is sucked above the film roll, and the number of particles of foreign matters contained in the sucked air is measured. The air after measurement is dedusted, the clean air that has been dedusted is ionized, and the ionized clean air is blown from both sides of the suction position toward the film roll to form an air flow from the film roll surface toward the suction position. In addition, when the measured value of the number of particles of the foreign substance reaches a predetermined value, the air suction operation and the air blowing operation are stopped.

  According to the present invention, the air is sucked to remove dust and ionize, and the ionized clean air is blown from both sides of the suction position, so that the foreign matter adhering to the film roll surface is peeled off from the film roll surface, It can be removed by suction without diffusing. Therefore, the reattachment of the foreign matter peeled from the film roll surface can be prevented, and the film roll surface can be efficiently removed.

  Further, according to the present invention, when the measured value of the number of particles of the foreign material reaches a predetermined value, the air suction operation and the blowing operation are stopped, so that the foreign material peeled off from the film roll surface can be reliably removed. it can.

  The invention of claim 2 is based on the data of the time until the measured value of the number of particles of the foreign matter reaches the predetermined value and the distance from the film roll surface to the blowing position in the invention of claim 1. Then, the blowing air speed and the blowing angle of the clean air are controlled.

  According to the present invention, the blowing air speed and the blowing angle of clean air can be optimized for each type of film roll, and the foreign matter adhering to the film roll surface can be removed in the shortest time.

  According to a third aspect of the present invention, in order to achieve the object, in the dust removal equipment for a film roll, suction means for sucking air above the film roll, and foreign substances contained in the air sucked by the suction means Measuring means for measuring the number of particles, purification means for removing the air sucked by the suction means to purify it into clean air, ionization means for ionizing the clean air, and suction means for the ionized clean air By blowing out from both sides of the film roll toward the film roll, a blowing means for forming an air flow from the film roll surface toward the suction means, and a distance from the film roll surface to the blowing means, the blowing means And control means for controlling the blowing air speed and the blowing angle of the clean air to be blown out.

  According to the dust removal equipment for a film roll of the present invention, foreign matter attached to the film roll surface is peeled off from the film roll surface by sucking air with the suction means and blowing out ionized clean air from both sides of the suction means. , It is sucked into the suction means without diffusing around. Therefore, the foreign matter peeled off from the film roll surface can be prevented from floating and diffusing around the film roll, and the reattachment of the foreign matter peeled off from the film roll surface can be prevented. Thereby, dust can be efficiently removed from the film roll surface.

  According to a fourth aspect of the present invention, in the invention according to the third aspect, the control means controls the blowing operation of the clean air by the blowing means according to the number of particles measured by the measuring means. It is characterized by.

  According to the present invention, since the ionized clean air blowing operation by the blowing means is controlled according to the number of particles measured by the measuring means, for example, when the number of particles to be measured reaches a predetermined value, The clean air blowing operation can be stopped.

  The invention according to claim 5 is the invention according to claim 3 or 4, wherein the blowing means includes a louver that changes a blowing angle of the clean air, and blows out the clean air by changing a blowing angle by the louver. It is characterized by that.

  According to the present invention, since the blowing means includes the louver that adjusts the blowing angle of the clean air, it is possible to blow the clean air at a desired blowing angle.

  According to the present invention, since the ionized clean air is blown out from both sides of the suction means, the foreign matter peeled off from the surface of the film roll can be prevented from diffusing to the surroundings, and the foreign matter is prevented from reattaching to the film roll. can do.

  Hereinafter, preferred embodiments of a dust removal method for a film roll and a dust removal equipment for a film roll according to the present invention will be described in detail with reference to the accompanying drawings.

[First embodiment]
FIG. 1 is a front view showing a schematic configuration of a dust removal equipment 10 for a film roll. The film roll dust removal equipment 10 shown in FIG. 1 is an equipment for removing foreign substances adhering to the surface of the film roll 12 inside the air shower chamber 14 adjacent to the film processing chamber 16. The film roll 12 is sent to a film processing chamber 16 which is a clean room, where it is processed. The film roll 12 is obtained by winding a belt-shaped plastic film around the winding core 18 in a roll shape, and has a width of 2000 mm and a roll diameter of 300 mm, for example. The film roll 12 is rewound and processed in the film processing chamber 16.

  As shown in FIG. 1, the film roll dust removal equipment 10 is mainly composed of a support device 20 that supports the film roll 12 and an air jet device 30 disposed above the film roll 12. The air jet device 30 is suspended from the upper portion of the air shower chamber 14 by a not-shown suspension fitting or the like.

  As shown in FIG. 2, the support device 20 includes a support base 22 and support columns 24 and 24 erected on the support base 22, and upper ends 24 </ b> A and 24 </ b> A of the support columns 24 and 24 are formed in a U shape. The winding core 18 of the film roll 12 is engaged with the U-shaped upper end portions 24, 24. Thereby, the film roll 12 is rotatably supported by the support device 20. Note that means for automatically rotating the core 18 of the film roll 12 may be provided in the support device 20.

  The support base 22 of the support device 20 is slidably engaged with rails 26 and 26 laid on the floor surface. As shown in FIG. 1, the rails 26, 26 extend from the floor surface of the air shower chamber 14 to the floor surface of the processing chamber 16, and by moving the support base 22 along the rails 26, 26, The film roll 12 can be moved from the air shower chamber 14 to the processing chamber 16. In addition, the support device 20 may be provided with traveling means for automatically traveling the support table 22 along the rails 26 and 26 so that the movement of the support table 22 is automatically controlled.

  FIG. 3 is a cross-sectional view schematically showing the internal configuration of the air jet device 30. 3 is a cross-sectional view orthogonal to the axial direction of the film roll 12 (see FIG. 1).

  As shown in the figure, the air jet device 30 has a case 32 having an open bottom surface, and partition plates 34 and 34 are provided in the lower portion of the case 32. The partition plates 34, 34 are formed along the depth direction of FIG. 3 (that is, the axial direction of the film roll 12), and the opening on the lower surface of the case 32 is divided into three. Hereinafter, the central opening is referred to as a suction port 32A, and the openings on both sides thereof are referred to as blowout ports 32B and 32B.

  The suction port 32A and the blowout ports 32B and 32B are formed in a rectangular shape that is long in the axial direction of the film roll 12 of FIG. The suction port 32 </ b> A and the air outlets 32 </ b> B and 32 </ b> B are formed in the width direction of the film roll 12 with the same dimension as the width dimension of the film roll 12 or slightly larger than the width dimension of the film roll 12. .

  A rectifying plate 36 such as a punching metal is disposed in the suction port 32A, and a suction tube 38A of a particle counter (corresponding to measuring means) 38 is provided on the side of the rectifying plate 36. A fan 40 is provided above.

  The particle counter 38 is a device that measures the number of particles having a predetermined size, and sucks air through the suction tube 38A. The particle counter 38 measures the number of foreign particles contained in the air sucked from the suction port 32A. The particle counter 38 is electrically connected to a control device 44 described later, and the control device 44 is configured to perform each control based on the measurement value of the particle counter 38.

  The fan 40 is configured to rotate by driving the motor 42, and is configured to suck air into the case 32 from the suction port 32 </ b> A when the fan 40 rotates. The sucked air passes through the inside of the case 32 and is sent to the outlets 32B and 32B, and is blown out of the case 32 through the outlets 32B and 32B.

  The motor 42 of the fan 40 is electrically connected to a control device 44 which will be described later, and the rotation speed of the fan 40, that is, the air flow rate is controlled by the control device 44. A V-shaped flow dividing plate 46 is provided above the fan 40 so that air blown from the fan 40 flows evenly to the two air outlets 32B and 32B.

  The blowout ports 32B and 32B are provided with louvers 50 and 50 for adjusting the air blowing direction. Each louver 50 has a plurality of blades 54, 54... That are swingably supported by the shaft 52, and the air blowing direction is adjusted by swinging the blades 54, 54. An operation lever 56 is attached to each blade 54, 54..., And this operation lever 56 is pushed and pulled by a blowing direction adjuster 58. Therefore, when the operation lever 56 is pushed and pulled by the blowing direction adjuster 58, the plurality of blades 54, 54... Are simultaneously swung to adjust the air blowing direction.

  An ionizer device (corresponding to ionization means) 60 is provided above the louver 50, and an air filter (corresponding to purifying means) 62 is provided above the ionizer device 60. For example, a HEPA filter or a ULPA filter is used as the air filter 62, and foreign matters in the air are removed by passing the air filter 62 through the air filter 62. Note that all the air supplied to the air outlet 32 is configured to pass through the air filter 62 and be removed.

  The ionizer device 60 is a device that charges the clean air purified by the air filter 62. When the clean air charged by the ionizer device 60 is blown onto the film roll 12, the ionizer device 60 is peeled off from the film roll 12. The effect of collecting foreign matters can be enhanced. The ionizer device 60 is connected to the control device 44, and its on / off and charge amount are controlled.

  The control device 44 controls the motor 42 of the fan 40, the ionizer device 60, and the blowing direction adjuster 58 based on the measurement value of the particle counter 38 described above. For example, the fan 40 and the ionizer device 60 are stopped when the measured value of the particle counter 38 reaches a predetermined value (usually zero).

  Further, the control device 44 controls the motor 42 and the blowing direction adjuster 58 of the fan 40 according to the distance h from the air jet device 30 to the film roll 12. Thereby, clean air can be blown against the film roll 12 at an appropriate wind speed and an appropriate blowing angle. Note that the appropriate wind speed and the appropriate blowing angle are values at which the air blown from the air outlets 32B and 32B of the air jet device 30 collides with the surface of the film roll 12 and forms an upward flow toward the suction port 32A. is there.

  The control device 44 has a built-in timer, and measures the dust removal time from when the air jet device 30 is driven until the measured value of the particle counter 38 reaches a predetermined value. Further, the control device 44 stores the dust removal time, the blowing wind speed, the blowing angle, and the distance h at that time, and converts them into data. And based on the data of dust removal time, blown wind speed, blow angle, distance h, the optimum conditions of blown wind speed and blow angle that minimize dust removal time are determined for each distance h, The blowout wind speed and blowout angle are set to the optimum conditions. In addition, you may make it obtain | require and set optimal conditions not only for the distance h but for every material of the film roll 12. FIG.

  Next, the operation of the film roll dust removal equipment 10 configured as described above will be described.

  The film roll 12 is transported from a manufacturing factory (not shown) to the air shower chamber 14 of the film roll dust removal equipment 10 in a simple packaged state. The transported film roll 12 is unwrapped in the air shower chamber 14 and attached to the support device 20. The support device 20 adjusts the position of the support base 22 so that the film roll 12 is disposed directly below the suction port 32 </ b> A of the air jet device 30. Further, the angle of the louver 50 of the air jet device 30, that is, the blowing angle is adjusted according to the distance h between the film roll 12 and the air jet 30.

  Next, by driving the air jet device 30, air is sucked from the suction port 32A and clean air is blown to the film roll 12 from the blow ports 32B and 32B. At this time, since clean air is blown in an oblique direction with respect to the film roll 12, the film roll 12 rotatably supported by the support device 16 automatically rotates.

  Further, by driving the air jet device 30, an ascending air current is formed between the film roll 12 and the suction port 32A. This updraft is formed by the clean air blown from the outlets 32B and 32B colliding with the surface of the film roll 12, or by the downflow of clean air colliding with each other.

  By the way, the foreign matter 66 adhering to the surface of the film roll 12 is peeled off from the film roll 12 by being blown with clean air, rises on the above-mentioned rising airflow, and is sucked into the air jet device 30 from the suction port 32A. The dust is removed by passing through the air filter 62. At that time, since the foreign matter 66 peeled off from the film roll 12 rises in the area sandwiched between clean air currents, it does not diffuse to the surroundings and is sucked into the air jet device 30 from the suction port 32A. To be removed. Therefore, even when the air jet device 30 is stopped, the foreign matter 66 does not scatter in the air shower chamber 14 and the reattachment of the foreign matter 66 to the film roll 12 can be prevented.

  The air jet device 30 is stopped when the measured value of the particle counter 38 reaches a predetermined value (for example, zero). After the air jet device 30 stops, the film roll 12 is moved from the air shower chamber 14 to the processing chamber 16 by moving the support device 16 along the rail 26.

  At that time, the control device 44 stores the data of the dust removal time until the measured value of the particle counter 38 reaches a predetermined value together with the data of the blowing wind speed, the blowing angle, and the distance h, and converts it into data. And based on the data of dust removal time, blown wind speed, blow angle, distance h, the optimum conditions of blown wind speed and blow angle that minimize dust removal time are determined for each distance h, The blowing wind speed and the blowing angle are set to the optimum conditions. Thereby, dust removal of a film roll can be performed in the shortest time.

  As described above, according to the present embodiment, the foreign matter 66 that floats and diffuses in the air shower chamber 14 is sucked into the air jet device 30 on the rising airflow, and therefore the foreign matter that floats in the air shower chamber 14. 66 can be reduced. Therefore, the reattachment of the foreign matter 66 to the film roll 12 when the air jet device 30 is stopped can be reduced, and the surface of the film roll 12 can be efficiently removed.

[Second Embodiment]
FIG. 4 is a front view showing a schematic configuration of the film roll dust removal equipment 10 according to the second embodiment of the present invention. The air jet apparatus 30 shown in the figure has ducts 70 and 70 attached to the air outlets 32B and 32B instead of providing the louver 50 (see FIG. 3) inside the air outlets 32B and 32B. The duct 70 is bent halfway toward the suction port 32 </ b> A, and the blowout ports 70 </ b> B and 70 </ b> B at the lower ends thereof are arranged facing the film roll 12.

  According to the film roll dust removal equipment 10 configured as described above, since the air outlets 70B and 70B are directed to the film roll 12 using the duct 70, clean air can be reliably applied to the film roll 12. Therefore, an updraft can be reliably formed between the ducts 70 and 70 by the clean air that has collided with the film roll 12. As a result, the foreign matter 66 peeled off from the film roll 12 rides on the rising air current and is sucked from the suction port 32A, so that the foreign matter 66 can be prevented from diffusing around the film roll 12, and the foreign matter 66 is reattached to the film roll 12. It can be surely prevented.

  In the above-described embodiment, the air jet device 30 is provided with both the air suction port 32A and the clean air outlets 32B and 32B, but is not limited to this, and is configured as a separate unit. May be. FIG. 5 is a cross-sectional view showing an air jet device 30 having a configuration in which a suction unit and a blowout unit are separately provided. In the air jet device 30 shown in the figure, a suction unit 72 having a suction port 72A and a blow-out unit 74 having a blow-out port 74B are provided separately, and these are connected by ducts 76 and 76.

The figure which shows schematic structure of the dust removal equipment for film rolls of the 1st Embodiment of this invention The perspective view which shows the support apparatus of FIG. Sectional drawing which shows the internal structure of the air jet apparatus of FIG. The figure which shows schematic structure of the dust removal equipment for film rolls of the 2nd Embodiment of this invention. Sectional drawing which shows the air jet apparatus of a structure different from FIG. The front view which showed schematic structure of the dust removal equipment for conventional film rolls

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Film dust removal equipment, 12 ... Film roll, 14 ... Air shower room, 20 ... Supporting device, 30 ... Air jet device, 32A ... Suction port, 32B ... Air outlet, 38 ... Particle counter, 40 ... Fan, 44 ... Control device, 50 ... Louvre, 60 ... Ionizer device, 62 ... Air filter

Claims (5)

Air is sucked above the film roll, the number of foreign particles contained in the sucked air is measured, the measured air is removed, the cleaned clean air is ionized, and the ionized clean air is removed from the suction position. While forming an air flow toward the suction position from the film roll surface by blowing toward the film roll from both sides,
A dust removal method for a film roll, wherein when the measured value of the number of particles of the foreign substance reaches a predetermined value, the air suction operation and the air blowing operation are stopped.   Controlling the blowing speed and the blowing angle of the clean air based on data of the time until the measured value of the number of foreign particles reaches the predetermined value and the distance from the film roll surface to the blowing position. The dust removal method of the film roll of Claim 1 characterized by these. A suction means for sucking air above the film roll;
Measuring means for measuring the number of foreign particles contained in the air sucked by the suction means;
Purifying means for removing dust sucked by the suction means and purifying it into clean air;
Ionizing means for ionizing the clean air;
Blowing means for forming an air flow from the film roll surface toward the suction means by blowing the ionized clean air from both sides of the suction means toward the film roll;
Based on the distance from the film roll surface to the blowing means, control means for controlling the blowing speed and angle of the clean air blown out by the blowing means;
A dust removal equipment for a film roll, comprising:   The dust removal equipment for a film roll according to claim 3, wherein the control means controls the operation of blowing the clean air by the blowing means according to the number of particles measured by the measuring means. The dust removal equipment for a film roll according to claim 3 or 4, wherein the blowing means includes a louver that changes a blowing angle of the clean air, and blows the clean air by changing a blowing angle by the louver.

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