JP2015193156A - Foreign matter removal device and foreign matter removal method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a foreign matter removal device which is capable of reducing the occurrence of defective products by quickly removing foreign matters on an outer peripheral surface of a roll and suppressing wear of the outer peripheral surface of the roll and tips of doctor blades, and to provide a foreign matter removal method.SOLUTION: A doctor device (foreign matter removal device) comprises: a plurality of doctor blades 20 provided side by side along the axis direction of a roll 10; a doctor blade driving part 23 which moves respective doctor blades 20 independently from other doctor blades 20 between an advanced position and a retracted position; and a detection part (for example a line sensor 40) for detecting foreign matters attached to an outer peripheral surface of the roll 10. On the basis of positions of foreign matters detected by the detection part in the axis direction of the roll 10, it moves, among the plurality of doctor blades, doctor blades 20 corresponding to the positions of the foreign matters, from the retracted position to the advanced position.

Description

  The present invention relates to a foreign matter removing apparatus and a foreign matter removing method for removing foreign matter from an outer peripheral surface of a roll.

  In a dry laminating machine that manufactures a laminate film, an adhesive is applied to a film such as one band-shaped resin film, and after being dried, it is bonded to the other band-shaped film by pressure bonding. In such a dry laminating machine, a plurality of rolls are used when continuously transporting the belt-like film. However, if foreign matter such as dust or dust floating in the atmosphere adheres to the rolls, it is manufactured. There is a possibility that a defective product is generated in the laminated film. For this reason, in order to remove the foreign material adhering to the outer peripheral surface of a roll, the doctor apparatus which has a doctor blade which scrapes off the foreign material on the outer peripheral surface of a roll is used.

  As a doctor device for removing foreign substances from the outer peripheral surface of a roll, for example, a device disclosed in Patent Document 1 is known. In the doctor apparatus disclosed in Patent Document 1, a doctor blade having a narrow width is slid in the axial direction in a state in which the blade is pressed against the outer peripheral surface of the roll to perform doctor ringing on the outer peripheral surface of the roll. . More specifically, a first operation mode for performing doctoring over the entire width of the outer peripheral surface of the roll, and a second operation mode for intensively doctoring a portion where foreign matter adhesion is detected by the foreign matter adhesion detection means, Depending on the two operation modes of the third operation mode in which both end portions of the passing sheet that are likely to cause adhesion of foreign matters on the outer peripheral surface of the roll are concentrated or an operation mode that combines these operation modes, Doctor ring of the outer peripheral surface of the.

Japanese Patent Laid-Open No. 11-81184

  However, in the doctor device of the prior art disclosed in Patent Document 1, after detecting the foreign matter attached to the outer peripheral surface of the roll, the doctor blade is moved along the axial direction of the roll to the position where the foreign matter exists in the axial direction of the roll. As the doctor blade takes time to move, the foreign material is not removed until the doctor blade reaches the foreign material location on the outer peripheral surface of the roll, and the amount of film that becomes a defective product. There was a problem that would increase. In addition, if the doctor blade is slid along the roll axial direction while the doctor blade is pressed against the outer peripheral surface of the roll, the outer peripheral surface of the roll and the tip of the doctor blade may be rubbed and easily worn out. It was.

  The present invention has been made in consideration of such points, and the amount of defective products can be reduced by removing foreign matters existing on the outer peripheral surface of the roll more quickly. It is an object of the present invention to provide a foreign matter removing apparatus and a foreign matter removing method capable of suppressing consumption of the outer peripheral surface and the tip of a doctor blade.

  The foreign matter removing device of the present invention is a foreign matter removing device that removes foreign matter from the outer peripheral surface of a roll, and is a plurality of doctor blades arranged in line along the axial direction of the roll, each of the doctors The blade has a plurality of doctor blades that are movable between an advancing position where the tip portion contacts the outer peripheral surface of the roll and a retracted position where the tip portion is separated from the outer peripheral surface of the roll, A doctor blade driving unit that moves the doctor blade between the advance position and the retracted position independently of the other doctor blades, a detection unit that detects foreign matter adhering to the outer peripheral surface of the roll, and the detection Based on the position in the axial direction of the roll in the foreign matter detected by the portion, the doctor blade corresponding to the position of the foreign matter among the plurality of doctor blades. Characterized by comprising a control unit for controlling the doctor blade driving unit to the coater blade from the retracted position is moved to the advanced position.

  According to such a foreign matter removing device, the foreign matter attached to the outer peripheral surface of the roll is detected, and is arranged so as to be aligned along the axial direction of the roll based on the position of the detected foreign matter in the axial direction of the roll. By moving the doctor blade corresponding to the position of the foreign substance among the multiple doctor blades from the retracted position to the advanced position, the foreign substance adhering to the outer peripheral surface of the roll can be removed more quickly. Can be reduced. Further, it is possible to suppress the consumption of the outer peripheral surface of the roll and the tip of the doctor blade as compared with the case where the doctor blade is slid along the axial direction of the roll while the doctor blade is pressed against the outer peripheral surface of the roll. .

  In the foreign matter removing apparatus of the present invention, the doctor blade driving unit includes a plurality of cylinders provided corresponding to the doctor blades, a compressor for supplying compressed gas to the cylinders, and compression from the compressor. A switching valve that is provided in a supply pipe that supplies gas to each cylinder and adjusts the supply of compressed gas to each cylinder, and the control unit controls the switching valve. Also good.

  In the foreign matter removing apparatus of the present invention, the detection unit may be composed of a line sensor that extends in parallel with the axial direction of the roll and can detect substantially the entire region in the axial direction of the roll.

  Alternatively, the detection unit includes a guide rail that extends in parallel with the axial direction of the roll and is provided over substantially the entire region in the axial direction of the roll, and a sensor that is movable along the guide rail. You may have.

  The foreign matter removing method of the present invention is a foreign matter removing method for removing foreign matter from the outer peripheral surface of a roll, the step of detecting foreign matter adhering to the outer peripheral surface of the roll, and the axis of the roll in the detected foreign matter. The doctor blade corresponding to the position of the foreign substance among the plurality of doctor blades provided so as to be arranged along the axial direction of the roll based on the position in the direction is retracted so that the tip portion is separated from the outer peripheral surface of the roll. And a step of moving the tip portion from the position to an advanced position where the tip portion contacts the outer peripheral surface of the roll.

  According to such a foreign matter removing method, the foreign matter attached to the outer peripheral surface of the roll is detected, and is arranged so as to be aligned along the axial direction of the roll based on the position of the detected foreign matter in the axial direction of the roll. By moving the doctor blade corresponding to the position of the foreign substance among the multiple doctor blades from the retracted position to the advanced position, the foreign substance adhering to the outer peripheral surface of the roll can be removed more quickly. Can be reduced. Further, it is possible to suppress the consumption of the outer peripheral surface of the roll and the tip of the doctor blade as compared with the case where the doctor blade is slid along the axial direction of the roll while the doctor blade is pressed against the outer peripheral surface of the roll. .

  According to the foreign matter removing apparatus and the foreign matter removing method of the present invention, it is possible to reduce the amount of defective products by more rapidly removing foreign matter existing on the outer peripheral surface of the roll. It is possible to suppress the consumption of the blade tip.

It is a perspective view which shows the outline of a structure of the doctor apparatus (foreign material removal apparatus) and roll by embodiment of this invention. It is a block diagram which shows typically the structure of a doctor apparatus and a roll shown in FIG. It is a block diagram which shows the structure of the doctor blade in the doctor apparatus shown in FIG. 1 etc., the doctor blade drive part etc. which move the said doctor blade between an advance position and a retracted position. It is a block diagram which shows the structure of the doctor blade in the doctor apparatus shown in FIG. 1 etc., the doctor blade drive part etc. which move the said doctor blade between an advance position and a retracted position. It is a top view of a doctor apparatus and a roll shown in FIG. It is a block diagram which shows the structure of the doctor blade etc. which move the doctor blade in the doctor apparatus which concerns on a modification, and the said doctor blade between an advance position and a retracted position. It is a block diagram which shows the structure of the doctor blade etc. which move the doctor blade in the doctor apparatus which concerns on a modification, and the said doctor blade between an advance position and a retracted position. It is a top view of the doctor apparatus and roll which concern on the further modification.

  Embodiments of the present invention will be described below with reference to the drawings. 1 to 5 are views showing a doctor apparatus according to the present embodiment. Among these, FIG. 1 is a perspective view showing an outline of the configuration of the doctor device and the roll according to the present embodiment, and FIG. 2 is a configuration diagram schematically showing the configuration of the doctor device and the roll shown in FIG. . 3 and 4 are configuration diagrams showing configurations of a doctor blade and a doctor blade driving unit that moves the doctor blade between the advanced position and the retracted position in the doctor apparatus shown in FIG. 1 and the like. FIG. 5 is a top view of the doctor device and the roll shown in FIG.

  The doctor device according to the present embodiment is disposed in, for example, a dry laminating machine that manufactures a laminate film, and removes foreign matters attached to the outer peripheral surface of a roll used when transporting a belt-like film. It has come to be used as a device.

  As shown in FIGS. 1 to 5, the doctor device according to the present embodiment includes a plurality of doctor blades 20 provided so as to be aligned along the axial direction of the roll 10, and a doctor holder 22 that holds each doctor blade 20. It has. Here, each doctor blade 20 is movable between an advancing position where the tip portion contacts the outer peripheral surface of the roll 10 and a retracted position where the tip portion is separated from the outer peripheral surface of the roll 10. In addition, the doctor device according to the present embodiment is provided with a doctor blade driving unit 23 that moves each doctor blade 20 between the advanced position and the retracted position independently of the other doctor blades 20. Furthermore, the doctor device according to the present embodiment can extend as parallel to the axial direction of the roll 10 as a detection unit that detects foreign matter adhering to the outer peripheral surface of the roll 10 and can detect substantially the entire area of the roll 10 in the axial direction. A line sensor 40 and a control unit 50 for controlling the doctor blade drive unit 23 based on foreign matter detection information by the line sensor 40. Each component of the doctor apparatus which consists of such a structure is demonstrated below.

  The doctor blade 20 is made of a plate and is made of plastic, hard rubber, or metal material. As shown in FIGS. 1 and 2, when the doctor blade 20 is in the advanced position, the angle of the doctor blade 20 with respect to the outer peripheral surface of the roll 10 is inclined rather than a right angle. Here, if the angle of the doctor blade 20 with respect to the outer peripheral surface of the roll 10 is a right angle, when the roll 10 rotates with the tip portion of the doctor blade 20 pressed against the outer peripheral surface of the roll 10 There arises a problem that the distal end portion of the doctor blade 20 vibrates little by little and is easily worn. On the other hand, in the present embodiment, when the doctor blade 20 is in the advanced position, the doctor blade 20 is inclined with respect to the outer peripheral surface of the roll 10, so that the distal end portion of the doctor blade 20 is Even if the roll 10 rotates while being pressed against the outer peripheral surface, the tip of the doctor blade 20 does not vibrate in small increments.

  As shown in FIGS. 2 to 5, the doctor blade driving unit 23 includes a plurality of cylinders 24 such as a plurality of air cylinders provided corresponding to the doctor blades 20, and an air compressor that supplies compressed air to each cylinder 24. 32. More specifically, each cylinder 24 is provided with a piston portion 24a having a distal end attached to a proximal end portion of a doctor holder 22 that holds the doctor blade 20, and the piston portion 24a is provided in FIG. By moving in the left-right direction in FIG. 4, the doctor blade 20 moves between an advanced position where the tip portion contacts the outer peripheral surface of the roll 10 and a retracted position where the tip portion separates from the outer peripheral surface of the roll 10. It is like that. Here, FIG. 3 is a diagram illustrating a state of the doctor blade driving unit 23 when the doctor blade 20 moves to the advanced position, and FIG. 4 illustrates a doctor blade driving unit when the doctor blade 20 moves to the retracted position. FIG.

  As shown in FIGS. 3 and 4, the inside of each cylinder 24 is divided into a first space 24b and a second space 24c by a disk-shaped member attached to the base end portion of the piston portion 24a. Air pipes 28 and 30 are connected to 24b and 24c, respectively. Further, as shown in FIG. 5, a plurality of electromagnetic switching valves 26 are provided between the cylinders 24 and the air compressors 32 corresponding to the doctor blades 20. Here, the air pipes 28 and 30 connected to each cylinder 24 are connected to different locations in the electromagnetic switching valve 26, respectively. Specifically, as shown in FIGS. 3 and 4, the electromagnetic switching valve 26 is provided with four ports (piping connection ports), and air pipes 28 and 30 are connected to two of these ports, respectively. ing. One port of the electromagnetic switching valve 26 is open to the atmosphere, and an air compressor 32 is connected to another port of the electromagnetic switching valve 26 via an air pipe 34.

  As shown in FIGS. 3 and 4, in such an electromagnetic switching valve 26, the communication relationship of each port is switched by changing the direction of the valve portion 26a provided therein. More specifically, when the valve portion 26a of the electromagnetic switching valve 26 is oriented as shown in FIG. 3, the air tube 28 and the air tube 34 communicate with each other, and the air tube 30 communicates with the atmosphere. The compressed air is sent from the machine 32 through the air pipe 34 and the air pipe 28 to the first space 24b in the cylinder 24, so that the piston portion 24a moves rightward in FIG. Moves toward the outer peripheral surface of the roll 10 and comes into contact with the outer peripheral surface. At this time, the air in the second space 24 c in the cylinder 24 is released to the atmosphere via the air pipe 30. On the other hand, when the valve portion 26 a of the electromagnetic switching valve 26 is oriented as shown in FIG. 4, the air pipe 30 and the air pipe 34 communicate with each other, and the air pipe 28 communicates with the atmosphere. The compressed air is sent to the second space 24c in the cylinder 24 through the air pipe 34 and the air pipe 30 so that the piston portion 24a moves in the left direction in FIG. It moves so that it may space apart from the outer peripheral surface. At this time, the air in the first space 24 b in the cylinder 24 is released to the atmosphere via the air pipe 28. As described above, in the doctor blade drive unit 23 shown in FIGS. 2 to 5, the doctor blade 20 can be moved between the advanced position and the retracted position by changing the direction of the valve portion 26a of the electromagnetic switching valve 26. It becomes like this. Note that the direction of the valve portion 26 a of the electromagnetic switching valve 26 is controlled by the control unit 50.

  The line sensor 40 serving as a detection unit that detects foreign matter adhering to the outer peripheral surface of the roll 10 is formed of a rod-like member extending in parallel with the axial direction of the roll 10. Further, both end portions of the line sensor 40 extend to the vicinity of both end surfaces of the roll 10, whereby the line sensor 40 can detect substantially the entire region in the axial direction of the roll 10. Here, as shown in FIG. 5, the line sensor 40 is divided into a plurality of sensor portions, and the foreign matter in the axial direction of the roll 10 depends on which sensor portion detects the foreign matter attached to the outer peripheral surface of the roll 10. The position is detected. Foreign matter detection information by the line sensor 40 is sent to the control unit 50.

  The control unit 50 corresponds to the position of the foreign substance among the plurality of doctor blades 20 provided along the axial direction of the roll 10 based on the position of the foreign substance detected by the line sensor 40 in the axial direction of the roll 10. The doctor blade drive unit 23 is controlled to move the doctor blade 20 from the retracted position to the advanced position. More specifically, as shown in FIGS. 2 and 5, the electromagnetic switching valve 26 and the line sensor 40 of the doctor blade driving unit 23 are respectively connected to the control unit 50, and foreign object detection information from the line sensor 40. Is sent to the control unit 50, and the control unit 50 changes the direction of the valve portion 26a of each electromagnetic switching valve 26 based on the foreign matter detection information from the line sensor 40. For example, when the line sensor 40 detects the presence of foreign matter in the central portion of the roll 10 in the axial direction, the doctor blade 20 corresponding to the position of the foreign matter (that is, disposed in the central portion of the roll 10 in the axial direction). The valve portion 26a of the electromagnetic switching valve 26 associated with the doctor blade 20 is changed from the direction shown in FIG. 4 to the direction shown in FIG. 3 so that the doctor blade 20) is moved from the retracted position to the advanced position. As a result, only the doctor blade 20 moves toward the outer peripheral surface of the roll 10 and comes into contact with the outer peripheral surface, so that the foreign matter adhering to the outer peripheral surface of the roll 10 is scraped off by the doctor blade 20. Be able to. The other doctor blades 20 are maintained at a retracted position separated from the outer peripheral surface of the roll 10. Further, in a state where no foreign matter is detected by the line sensor 40, all the doctor blades 20 are maintained at the retracted position. Thereby, it can suppress that the front-end | tip part of the doctor blade 20 wears out by contacting with the outer peripheral surface of the roll 10. FIG.

  Next, the operation of the doctor apparatus having such a configuration, specifically, a method for removing foreign matter from the outer peripheral surface of the roll 10 will be described.

  In the state where no foreign matter is present on the outer peripheral surface of the roll 10 and no foreign matter is detected by the line sensor 40, the control unit 50 shows the valve portions 26a of all the electromagnetic switching valves 26 in the doctor blade drive unit 23 in FIG. By setting the orientation, all the doctor blades 20 are maintained at the retracted positions separated from the outer peripheral surface of the roll 10. On the other hand, when foreign matter such as dust or dust floating in the atmosphere adheres to the outer peripheral surface of the roll 10, this foreign matter is detected by the line sensor 40. At this time, the position of the foreign matter in the axial direction of the roll 10 is detected by the line sensor 40. Information on detection of foreign matter by the line sensor 40 is sent to the control unit 50. Based on the position of the foreign object in the axial direction of the roll 10 detected by the line sensor 40, the control unit 50 moves the doctor blade 20 corresponding to the position of the foreign object from the retracted position to the advanced position. 20 is changed from the direction shown in FIG. 4 to the direction shown in FIG. Accordingly, only the doctor blade 20 corresponding to the position of the foreign matter in the axial direction of the roll 10 moves toward the outer peripheral surface of the roll 10 and comes into contact with the outer peripheral surface. The attached foreign matter is scraped off by the doctor blade 20. When the foreign matter is removed from the outer peripheral surface of the roll 10 and no foreign matter is detected by the line sensor 40, the control unit 50 relates to this doctor blade 20 so that the doctor blade 20 that has moved to the advanced position is returned to the retracted position. The valve portion 26a of the electromagnetic switching valve 26 is changed from the direction shown in FIG. 3 to the direction shown in FIG. In this way, all the doctor blades 20 are again maintained at the retracted position separated from the outer peripheral surface of the roll 10.

  According to the doctor device (foreign matter removing device) and the foreign matter removing method of the present embodiment configured as described above, foreign matter adhering to the outer peripheral surface of the roll 10 is detected, and the axial direction of the roll 10 in the detected foreign matter is detected. By moving the doctor blade 20 corresponding to the position of the foreign substance from the retracted position to the advanced position among the plurality of doctor blades 20 provided so as to be aligned along the axial direction of the roll 10 based on the position of the roll 10. The foreign matter adhering to the outer peripheral surface of the film can be removed more rapidly, which can reduce the amount of defective products such as a laminate film. Further, compared to the case where the doctor blade 20 is slid along the axial direction of the roll 10 while the doctor blade 20 is pressed against the outer peripheral surface of the roll 10, the wear of the outer peripheral surface of the roll 10 and the tip of the doctor blade 20 is consumed. Can be suppressed.

  Moreover, in the doctor device (foreign matter removing device) of the present embodiment, as described above, the doctor blade drive unit 23 supplies a plurality of cylinders 24 provided corresponding to the respective doctor blades 20 and air gas to each of them. Electromagnetic switching for adjusting the supply of compressed air to each cylinder 24 provided in the air compressor 32 supplied to the cylinder 24 and the air pipes 28, 30, 34 for supplying compressed air from the air compressor 32 to each cylinder 24 The control unit 50 controls the electromagnetic switching valve 26. According to such a doctor device, the arbitrary doctor blade 20 can be moved from the retracted position to the advanced position only by switching the direction of the valve portion 26a of the electromagnetic switching valve 26.

  Moreover, in the doctor device (foreign matter removing device) of the present embodiment, as described above, the detection unit that detects foreign matter attached to the outer peripheral surface of the roll 10 extends in parallel with the axial direction of the roll 10, A line sensor 40 that can detect substantially the entire area of the roll 10 in the axial direction is used. In this case, foreign matter adhering to the outer peripheral surface of the roll 10 can be quickly detected, and the amount of defective products such as a laminate film can be further reduced.

  In addition, the doctor apparatus (foreign substance removal apparatus) and the foreign substance removal method according to the present embodiment are not limited to the above-described aspects, and various changes can be made.

  For example, the gas supplied to the cylinder 24 for moving the doctor blade 20 between the advanced position and the retracted position is not limited to compressed air. The piston portion 24 a may be moved by supplying a gas other than compressed air to the cylinder 24. The cylinder 24 is not limited to an air cylinder, and may be an electric type using a solenoid or the like.

  The doctor blade driving unit for moving each doctor blade 20 between the advanced position and the retracted position is not limited to the one having the cylinder 24 such as an air cylinder. The structure of the doctor blade drive part in the doctor apparatus which concerns on a modification is shown in FIG. 6 and FIG. In the doctor device according to the modification shown in FIGS. 6 and 7, the same components as those of the doctor device shown in FIGS. 1 to 5 are denoted by the same reference numerals, and the description thereof is omitted.

  In the doctor blade driving unit 60 shown in FIGS. 6 and 7, the doctor blade 20 is moved between an advanced position and a retracted position by a plunger 64 containing an electromagnet. More specifically, a plunger 64 is provided so as to be rotatable about a rotation shaft 64a with respect to a plunger support member 62 provided in a fixed position, and a first rod-like member 66 is attached to the plunger 64. It has been. A second rod-shaped member 68 is attached to the proximal end portion of the doctor holder 22 that holds the doctor blade 20. Here, as shown in FIGS. 6 and 7, the first rod-like member 66 and the second rod-like member 68 are arranged apart from each other so as to extend in parallel. The plunger support member 62 provided in a fixed position is provided with a third rod-like member 70 so as to be rotatable about the rotation shaft 70a. Here, the first rod-like member 66 and the third rod-like member 70 are arranged at both end portions of the third rod-like member 70 so as to be rotatable around the respective rotation shafts 70b, 70c provided at both end portions of the third rod-like member 70. Second rod-shaped members 68 are connected to each other. Further, a fourth rod-like member 72 is provided so as to be separated from the third rod-like member 70 and to extend in parallel with the third rod-like member 70. Here, the first rod-shaped member 66 and the both ends of the fourth rod-shaped member 72 are arranged so as to be rotatable around the respective rotation shafts 72a, 72b provided at both ends of the fourth rod-shaped member 72. Second rod-shaped members 68 are connected to each other.

  When the doctor blade 20 is maintained in the retracted position, as shown in FIG. 6, the plunger 64 extends the first rod-like member 66 to the right in FIG. On the other hand, when the doctor blade 20 is moved from the retracted position to the advanced position, the first rod-shaped member 66 is moved to the left in FIG. 7 by exciting the electromagnet built in the plunger 64 as shown in FIG. Evacuate. As a result, the third rod-shaped member 70 rotates in the counterclockwise direction in FIGS. 6 and 7 around the rotation shaft 70a, and the second rod-shaped member 68 advances to the right in FIG. The doctor blade 20 also moves toward the outer peripheral surface of the roll 10.

  In the doctor apparatus provided with the doctor blade driving unit 60 as shown in FIG. 6 and FIG. 7, the control unit 50 detects the foreign matter based on the position of the foreign matter in the axial direction of the roll 10 detected by the line sensor 40. In order to move the doctor blade 20 corresponding to the position from the retracted position to the advanced position, the electromagnet built in the plunger 64 associated with the doctor blade 20 is excited to retract the first rod-like member 66 to the left in FIG. Therefore, the second rod-shaped member 68 and the doctor blade 20 are integrally advanced to the right in FIG. Even in the doctor device according to such a modification, it is possible to achieve the same operational effects as the doctor device having the doctor blade driving unit 23 as shown in FIGS. 1 to 5.

  Further, in the doctor device of the present embodiment, as the doctor blade driving unit for moving each doctor blade 20 between the advanced position and the retracted position, the doctor blade driving unit 23 shown in FIGS. 6 and a configuration other than the doctor blade driving unit 60 shown in FIG. 7 may be used.

  In the doctor device according to the present embodiment, the detection unit that detects the foreign matter attached to the outer peripheral surface of the roll 10 is not limited to the line sensor 40, and other types of sensors may be used. For example, a sensor that moves along the axial direction of the roll 10 may be used as a detection unit that detects foreign matter attached to the outer peripheral surface of the roll 10. A configuration of a doctor device having such a sensor is shown in FIG. In the doctor apparatus according to the modified example as shown in FIG. 8, the same components as those of the doctor apparatus shown in FIGS.

  The detection unit 80 shown in FIG. 8 extends in parallel with the axial direction of the roll 10 at a location separated from the outer peripheral surface of the roll 10, and a pair of guides provided in parallel over substantially the entire area in the axial direction of the roll 10. Rails 84, 86 and sensors 82 that are movable along the respective guide rails 84, 86, and by moving the sensor 82 along the axial direction of the roll 10, A foreign substance adhering to the surface is detected by the sensor 82. More specifically, as shown in FIG. 8, the detection unit 80 is provided with a ball screw 88 extending in parallel with the axial direction of the roll 10, and the ball screw 88 is rotated by rotating the ball screw 88. The fitted sensor 82 moves along the axial direction of the roll 10.

  In the doctor device having the detection unit 80 as shown in FIG. 8, the control unit 50 continuously moves the sensor 82 along the axial direction of the roll 10 by rotating the ball screw 88, and is detected by the sensor 82. Further, based on the position of the foreign matter in the axial direction of the roll 10, the valve portion of the electromagnetic switching valve 26 related to the doctor blade 20 is moved so that the doctor blade 20 corresponding to the position of the foreign matter is moved from the retracted position to the advanced position. 26a is changed from the direction shown in FIG. 4 to the direction shown in FIG. Even in the doctor apparatus according to such a modification, the same operational effects as the doctor apparatus having the line sensor 40 as shown in FIGS. 1 to 5 can be obtained.

  Moreover, in the doctor apparatus of this Embodiment, it is a thing other than the line sensor 40 shown in FIG. 1 thru | or FIG. 5 and the detection part 80 shown in FIG. 8 as a detection part which detects the foreign material adhering to the outer peripheral surface of the roll 10. FIG. May be used.

  Moreover, the foreign material removal apparatus by this invention is not necessarily limited to what removes the foreign material adhering to the outer peripheral surface of the roll which conveys the strip | belt-shaped film in a dry laminating machine. The foreign matter removing apparatus according to the present invention is a doctor device that removes foreign matter adhering to the adhesive application roll when the adhesive is applied to the outer peripheral surface of the dry laminating machine when the adhesive is applied to the film. You may apply to the doctor apparatus etc. of the roll of a web conveyance roll of this, or a resin extrusion apparatus.

DESCRIPTION OF SYMBOLS 10 Roll 20 Doctor blade 22 Doctor holder 23 Doctor blade drive part 24 Cylinder 24a Piston part 24b 1st space 24c 2nd space 26 Electromagnetic switching valve 26a Valve part 28, 30 Air pipe 32 Air compressor 34 Air pipe 40 Line sensor 50 Control unit 60 Doctor blade drive unit 62 Plunger support member 64 Plunger 64a Rotating shaft 66 First rod member 68 Second rod member 70 Third rod members 70a, 70b, 70c Rotating shaft 72 Fourth rod member 72a, 72b Rotating shaft 80 Detector 82 Sensor 84, 86 Guide rail 88 Ball screw

Claims (5)

A foreign matter removing device that removes foreign matter from the outer peripheral surface of a roll,
A plurality of doctor blades arranged so as to be aligned along the axial direction of the roll, each doctor blade having an advancing position where the tip portion contacts the outer peripheral surface of the roll and the tip portion being the outer periphery of the roll A plurality of doctor blades that are movable between retreat positions that are separated from the surface;
A doctor blade drive that moves each of the doctor blades between the advance position and the retracted position independently of the other doctor blades;
A detection unit for detecting foreign matter adhering to the outer peripheral surface of the roll;
Based on the position of the roll in the axial direction of the foreign matter detected by the detection unit, the doctor blade corresponding to the position of the foreign matter among the plurality of doctor blades is moved from the retracted position to the advanced position. A control unit for controlling the doctor blade drive unit;
A foreign matter removing device.   The doctor blade driving unit includes a plurality of cylinders provided corresponding to the doctor blades, a compressor that supplies compressed gas to the cylinders, and a supply that supplies compressed gas from the compressor to the cylinders. 2. The foreign matter removing apparatus according to claim 1, further comprising a switching valve provided in a pipe and configured to adjust a supply of compressed gas to each of the cylinders, wherein the control unit controls the switching valve. .   The foreign matter removing apparatus according to claim 1, wherein the detection unit includes a line sensor that extends in parallel with the axial direction of the roll and can detect substantially the entire region in the axial direction of the roll.   The detection unit includes a guide rail that extends in parallel with the axial direction of the roll and is provided over substantially the entire region in the axial direction of the roll, and a sensor that is movable along the guide rail. The foreign matter removing apparatus according to claim 1 or 2. A foreign matter removal method for removing foreign matter from the outer peripheral surface of a roll,
Detecting foreign matter adhering to the outer peripheral surface of the roll;
Based on the detected position of the roll in the axial direction of the roll, the tip of the doctor blade corresponding to the position of the foreign substance among the plurality of doctor blades arranged so as to be aligned along the axial direction of the roll Moving the tip portion from the retracted position away from the outer peripheral surface of the roll to the advanced position where the tip portion contacts the outer peripheral surface of the roll;
A foreign matter removing method comprising:

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