JP5759757B2 - Roller device - Google Patents

Description

  The present invention relates to a heating roller device for heating an object to be processed such as a metal foil or a resin film or a cooling roller device for cooling.

  Conventionally, for example, as an apparatus for heating or drying a metal foil coated with a resin or a heating apparatus for heat-treating a metal foil, an apparatus using an induction heating roller apparatus shown in Patent Document 1, for example, has been considered. Specifically, the metal foil is heated, dried or heat-treated by transferring the metal foil to the roller body of the induction heating roller device while contacting the metal foil.

  However, when the metal foil is heated, dried or heat-treated in contact with the roller body of the induction heating roller, the metal foil has a large coefficient of thermal expansion. However, there is a problem that skidding occurs on the surface of the roller body and the surface of the metal foil is damaged. There is also a problem that wrinkles occur when the side slip does not go smoothly on the surface of the roller body. Furthermore, if a difference occurs between the rotation speed of the roller body and the speed of the metal foil, there is a problem that the surface of the metal foil is damaged.

  In addition, as shown in patent document 2, although it does not heat a to-be-heated object, in the induction | guidance | derivation roll for guide | inducing a strip | belt-shaped member, the air chamber provided between the rotating roll main body and the stationary formation member It has been considered that air is supplied from an air source to eject air from a hole formed in the roll body to separate the belt-shaped member and the roll body.

  However, when changing the metal foil pass line by changing the processing process of the metal foil, etc., when the contact area between the metal foil and the roller body changes, it is necessary to prepare a dedicated guide roller separately. There is a problem that the capital investment becomes large.

JP 2008-269826 A JP 2005-113223 A

  Therefore, the present invention has been made to solve the above problems all at once, and can easily cope with various pass lines while preventing the occurrence of scratches and wrinkles on the workpiece to be heated or cooled. Doing it is the main desired task.

That is, the roller device according to the present invention includes a roller body that is rotatably supported, a mechanism that is provided in the hollow of the roller body, and that heats or cools the roller body, and an entire circumference of a side peripheral wall of the roller body. A plurality of gas flow passages that are provided at intervals over the gas flow passage along the axial direction, and are provided corresponding to the respective gas flow passages, and communicate with the gas flow passages to form the roller body. A plurality of gas outlets opening on the surface of the roller , a journal fixed to the axial end of the roller body and rotatably supported by a machine base, provided on a side peripheral wall of the journal, one end of the gas by changing a plurality of gas introduction path and the other end communicates with the flow passage is open to the side peripheral surface of the journal, a gas introduction passage for introducing a gas of the plurality of the gas inlet passage, the plurality of gas Change the gas flow passage for introducing the gas of the passage, includes a balloon area changing mechanism changing the gas blow-out area blows the gas in the circumferential direction from the gas outlet, the balloon region changing mechanism, the journal The slide body is fixed in the circumferential direction and is slidably mounted in the axial direction, and the slide body introduces gas supplied from a gas source into the gas introduction path. A recess for forming a gas supply space is formed on the inner surface with the side peripheral surface of the journal, and the numerical aperture of the gas introduction path communicating with the recess is changed according to the position in the axial direction with respect to the journal. It is characterized by being. Here, in order for the blowing area changing mechanism to change the gas blowing area in the circumferential direction, changing the circumferential angle range of the gas blowing area and changing the position of the gas blowing area in the circumferential direction. Including.

  In such a case, a gas blowout port is provided on the entire circumference of the roller body, and the object to be processed can be partially or completely floated from the roller body. Generation of scratches and wrinkles caused by sliding can be prevented. Moreover, when it floats completely, the damage | wound produced by the difference of the rotational speed of a roller main body and the speed of a to-be-processed object can be prevented. Furthermore, since the gas blowing area is changed in the circumferential direction by the blowing area changing mechanism, not only can the processing change such as partially floating or completely floating the object to be processed be performed, It is possible to easily cope with various pass lines such as different contact areas with the roller body.

  As a specific embodiment of the blowing area changing mechanism, the blowing area changing mechanism introduces gas into a gas flow passage that is continuous in the circumferential direction, and the number of gas flow paths that are continuous in the circumferential direction is It is desirable to change the angle range in the circumferential direction of the gas blowing region. In this case, since the angular range in the circumferential direction can be changed by the blowing area changing mechanism, the contact start part where the contact of the object to be processed starts, the center part of the contact area between the object to be processed and the roller body, the contact of the object to be processed Various portions such as the contact end portion where the process ends or the entire contact area between the object to be processed and the roller body can be selectively floated depending on the application.

  A journal fixed to the axial end of the roller body and rotatably supported by a machine base, provided on a side peripheral wall of the journal, one end communicating with the gas flow passage and the other end of the journal A gas flow path for introducing gas by changing the gas introduction path for introducing gas among the plurality of gas introduction paths. It is desirable to change. In this case, since the blowing area changing mechanism changes the gas introduction path that opens on the side peripheral surface of the journal, there is no need to provide a blowing area changing mechanism in the vicinity of the roller body, and the heat effect received from the roller body is as much as possible The roller body can be used as a load contact area to the maximum.

  The outer diameter of the journal is smaller than the outer diameter of the roll body, and it is physically difficult to provide one gas introduction path corresponding to one gas flow path of the roll body, or the mechanical strength of the journal is impaired. There is a fear. For this reason, it is desirable that each gas introduction path is connected to two or more gas flow paths. In this case, the number of gas introduction paths on the side peripheral wall of the journal can be reduced, and the gas introduction paths can be provided without difficulty, and the mechanical strength of the journal is not impaired.

  The blowing area changing mechanism has a slide body fixed to the journal in a circumferential direction and slidably mounted in an axial direction, and the slide body introduces gas supplied from a gas source into the gas A recess for forming a gas supply space is formed between the inner peripheral surface of the journal and a side peripheral surface of the journal, and communicates with the recess according to an axial position with respect to the journal. It is desirable that the numerical aperture of the gas introduction path be changed. In this case, in the state where the journal is rotating, the opening of the gas introduction path once communicated with the recess rotates while maintaining the state of communication with the recess until the communication with the recess is completed. Gas can be continuously blown out from a certain gas outlet.

  It is desirable that the plurality of gas outlets be formed over the entire load contact area where the workpiece can contact in the axial direction of the roller body.

  According to the present invention configured as described above, it is possible to easily cope with various pass lines while preventing generation of scratches and wrinkles on the workpiece to be heated or cooled.

The typical block diagram of the induction heating roller apparatus which concerns on one Embodiment of this invention. A sectional view which omitted the internal structure of the embodiment. B sectional drawing which abbreviate | omitted the internal structure of the embodiment. C sectional drawing which abbreviate | omitted the internal structure of the same embodiment. The expanded view of the internal peripheral surface of the slide body of the embodiment. D sectional drawing which abbreviate | omitted the internal structure of the embodiment (in the case of (theta) max). D sectional drawing which abbreviate | omitted the internal structure of the embodiment (in the case of (theta) min). The schematic diagram of the system incorporating the induction heating roller in deformation | transformation embodiment. The expanded view of the internal peripheral surface of the slide body in deformation | transformation embodiment. The figure which shows the change aspect of the gas blowing area | region in deformation | transformation embodiment. Sectional drawing which shows the blowing area | region change mechanism in deformation | transformation embodiment.

  Hereinafter, an embodiment of an induction heat roller device according to the present invention will be described with reference to the drawings.

  The induction heating roller device 100 according to the present embodiment is used in, for example, a continuous heat treatment process of an object to be heated W such as a metal foil, and has a hollow cylindrical shape that is rotatably provided as shown in FIG. A roller body 2 and a magnetic flux generation mechanism 3 as a heating mechanism housed in the roller body 2 are provided.

  Journals 4 are integrally attached to both ends of the roller body 2. The journal 4 is configured such that a hollow drive shaft 41 and a flange 42 are integrally formed. The journal 4 is connected to the end surface in the axial direction of the roller body 2 so as to cover the end opening of the roller body 2. The drive shaft 41 is rotatably supported by the base 52 via a bearing 51 such as a rolling bearing. The roller body 2 is rotated by rotating the drive shaft 41 of the journal 4 with an external driving force using, for example, a motor.

  In addition, a plurality of jacket chambers 21A for enclosing a gas-liquid two-phase heat medium extending in the longitudinal direction (axial direction) are formed in the side peripheral wall 21 of the roller main body 2 with an interval in the entire circumferential direction. The ends of the plurality of jacket chambers 21A communicate with the ends of the adjacent jacket chambers 21A. The surface temperature of the roller body 2 is made uniform by the latent heat transfer of the gas-liquid two-phase heat medium sealed in the jacket chamber 21A.

  The magnetic flux generation mechanism 3 includes a cylindrical iron core 31 having a cylindrical shape, and an induction coil 32 wound around the outer peripheral surface of the cylindrical iron core 31. Support rods 6 are attached to both ends of the cylindrical iron core 31, respectively. Each of the support rods 6 is inserted into the drive shaft 41 and is rotatably supported with respect to the drive shaft 41 via a bearing 7 such as a rolling bearing. Thereby, the magnetic flux generation mechanism 3 is supported in a suspended state inside the roller body 2. Further, the rotation of the magnetic flux generation mechanism 3 is restricted between the magnetic flux generation mechanism 3 and a gantry by a rotation stopper (not shown). A lead wire L1 is connected to the induction coil 32, and an AC power supply (not shown) for applying an AC voltage is connected to the lead wire L1.

  By such a magnetic flux generation mechanism 3, an alternating magnetic flux is generated when an AC voltage is applied to the induction coil 32, and the alternating magnetic flux passes through the side peripheral wall 21 of the roller body 2. This passage generates an induced current in the roller body 2, and the roller body 2 generates Joule heat by the induced current. The roller body 2 makes the surface temperature in the axial direction of the roller body 2 uniform by means of a jacket chamber 21A provided inside.

  Thus, the induction heating roller device 100 according to the present embodiment blows gas from a load contact area on the surface of the roller main body 2 where the metal foil W can come into contact to partially or completely float the metal foil W from the roller main body 2. Is configured to be possible. In addition, as gas to blow off, inert gas, such as nitrogen, argon, or helium, can be considered, for example.

  Specifically, as shown in FIGS. 1 and 2, a plurality of gas flow passages 201 provided on the side peripheral wall 21 of the roller body 2, and gas flow passages provided corresponding to the respective gas flow passages 201. Gas is blown out from the gas blowing port 202 by changing a plurality of gas blowing ports 202 communicating with 201 and opening on the surface of the roller body 2 and a gas flow channel 201 for introducing gas among the plurality of gas flow channels 201. And a blowing area changing mechanism 8 for changing the gas blowing area X in the circumferential direction. In addition, this gas blowing area | region X will be the same position, without moving to the circumferential direction irrespective of rotation of the roller main body 2, when not changing by the blowing area | region change mechanism 8. FIG.

  As shown in FIG. 2, the plurality of gas flow passages 201 are provided at equal intervals over the entire circumference of the side peripheral wall 21 of the roller body 2. Each gas flow passage 201 is provided so as to extend along the axial direction of the roller body 2, and allows gas to flow along the axial direction of the roller body 2. Each gas flow passage 201 extends from the axial end of the roller body 2 over the entire load contact area in the axial direction of the roller body 2.

  These gas flow passages 201 are provided at positions different from the jacket chamber 21 </ b> A provided in the side peripheral wall 21 of the roller body 2. For example, it is desirable to provide the jacket chamber 21A at the center of the adjacent gas flow passages 201 in consideration of the temperature effects of the jacket chamber 21A and the gas flow passage 201.

  In addition, as shown in FIGS. 1 and 2, each gas flow passage 201 includes a plurality of gas flow passages 201 that extend radially outward in the side peripheral wall 21 of the roller body 2 and open to the surface of the roller body 2. The gas outlet 202 is formed. A plurality of gas outlets 202 communicating with each gas flow passage 201 are provided, for example, at equal intervals over the entire load contact area in the axial direction of the roller body 2.

  The plurality of gas flow passages 201 are open to one end surface in the axial direction of the roller body 2, and the gas flow passages 201 communicate with a gas introduction path 401 formed on the side peripheral wall of the journal 4.

  As shown in FIG. 1, one end of the gas introduction path 401 opens on the roller body side end surface of the flange 42 of the journal 4, and the other end opens on the side peripheral surface 411 of the drive shaft 41 of the journal 4. . As shown in FIG. 3, the gas introduction paths 401 are formed at equal intervals along the entire circumference of the side wall of the drive shaft 41, and are formed radially on the side wall of the flange 42.

  One end opening 401 a of the gas introduction path 401 is configured to communicate with the two gas flow paths 201 provided in the roller body 2. Specifically, as shown in FIGS. 1 and 3, a communication recess 2 </ b> M that communicates two circumferentially adjacent gas flow passages 201 is formed on one end surface in the axial direction of the roller body 2. In the state where the flange 42 of the journal 4 is connected to one end surface in the axial direction, one end opening 401a of one gas introduction path 401 is connected to the communication recess 2M. As a result, two gas flow paths 201 are connected to one gas introduction path 401. In addition, the other end opening 401b of the gas introduction path 401 opens outside a support portion that is rotatably supported by the machine base 52 via the bearing 51 in consideration of the installation space of the slide body 81 described later. ing. Furthermore, the other end openings 401 b of the gas introduction path 401 are formed at equal intervals in the circumferential direction of the drive shaft 41 and at the same position in the axial direction.

  The blowing area changing mechanism 8 changes the gas flow path 201 for introducing gas by changing the gas introduction path 401 for introducing gas among the plurality of gas introduction paths 401 formed in the journal 4. In this embodiment, since two adjacent gas flow paths 201 are connected to one gas introduction path 401, the gas flow paths 201 for introducing gas in units of two are changed.

  This blowing area changing mechanism 8 introduces gas into the gas introduction path 401 that is continuous in the circumferential direction, and changes the number of gas introduction paths 401 that are continuous in the circumferential direction, so that a plurality of gas flow paths 201 are arranged. Among them, the gas flow passage 201 for introducing the gas is changed, and the angular range θ in the circumferential direction of the gas blowing region X is changed (see FIG. 2).

  As a specific configuration, as shown in FIG. 1, a slide body 81 that is fixed in the circumferential direction with respect to the drive shaft 41 of the journal 4 and is slidably mounted in the axial direction, and the slide body 81 are stationary. And a moving mechanism 82 for moving in the axial direction of the drive shaft 41 with respect to the machine base 52 as a side. As shown in FIG. 1, the moving mechanism 82 is moved in the axial direction by a screw mechanism using a bolt, but may be another one using an air cylinder or the like.

  As shown in FIG. 1, the slide body 81 is connected to a gas supply pipe 91 that supplies gas from the gas source 9, and the supplied gas passes through a gas introduction path 401 that opens to the drive shaft 41 of the journal 4. It is to be introduced. Specifically, as shown in FIG. 4, the slide body 81 has a substantially cylindrical shape that is fitted with a slight backlash on the side peripheral surface of the drive shaft 41 of the journal 4, and the drive shaft is formed on the inner peripheral surface thereof. A concave portion 811 that forms a gas supply space S is formed between the outer peripheral surface of 41 and the outer peripheral surface. A bearing 83 is provided between the slide body 81 and the drive shaft 41 on both sides of the recess 811 in the axial direction (see FIG. 1).

  As shown in FIG. 4, the recess 811 is formed in the circumferential direction, and an inflow passage 812 through which gas from the gas supply pipe 91 flows is formed on the bottom surface of the recess. In addition, a seal member 813 such as an O-ring is provided outside the recess 811 in order to make the gas supply space S airtight. Since the concave portion 811 is formed in a predetermined angular range in the circumferential direction as described above, the opening 401b of the gas introduction passage 401 once communicated with the concave portion 811 is rotated by the predetermined angle in a state where the journal 4 is rotating. It continues to communicate with the recess 811. That is, in a state where the roller main body 2 is rotating, the gas blowing port 202 included in the gas blowing region X rotates while blowing the gas continuously. The opening 401b of the gas introduction path that does not communicate with the recess 811 is covered and closed by the inner peripheral surface of the slide body 81, and no gas is introduced.

  The slide body 81 is configured such that the numerical aperture of the gas introduction path 401 communicating with the recess 811 is changed according to the position in the axial direction with respect to the journal 4. Specifically, as shown in FIG. 5, the opening shape of the concave portion 811 forms a trapezoidal shape when the slide body 81 is expanded.

  For example, in FIG. 5, in order to set the gas blowing region X to the maximum angle range θmax (see FIG. 6) in the circumferential direction, the slide body 81 is moved to the left along the axial direction. Note that the maximum angle range θmax in FIG. 6 is an angle range in which gas is blown out over the entire load contact region and the entire metal foil W is floated with respect to the roller body 2. On the other hand, in order to set the gas blowing region X to the minimum angle range θmin (see FIG. 7) in the circumferential direction, the slide body 81 is moved to the right along the axial direction. Note that the minimum angle range θmin in FIG. 7 is an angle range in which gas is blown out to a region from the contact start portion to the center portion in the load contact region, and the metal foil W is partially floated with respect to the roller body 2. Thus, by moving the slide body 81 in the axial direction, the gas blowing region X can be changed between the maximum angle range θmax and the minimum angle range θmin. The maximum angle range θmax and the minimum angle range θmin can be changed as appropriate depending on the width dimension of the recess 811 in the circumferential direction.

  Next, a heating system using the induction heat roller device 100 of the present embodiment will be described. As shown in FIG. 8, the heating system includes a distance detection unit 11 that detects the distance between the roll body surface and a load (metal foil W), a load tension detection unit that detects load tension, and the distance detection unit 11. Based on the distance between the roll body surface and the load detected by the load, the load tension obtained by the load tension detector, and the roll rotation speed detected by the motor 12, the roll body is controlled by the gas blow-out amount or the gas supply pressure. A distance adjusting unit 13 that adjusts the distance between the surface and the metal foil W is provided. Further, in this heating system, a preheater 14 is provided on the gas supply pipe 91 for preheating the gas supplied to the gas blowing port 202 to, for example, the surface temperature of the roller body.

  The distance detector 11 detects the distance between the surface of the roller body and the load by detecting the distance from the position where the distance detector 11 is provided to the load, for example, an ultrasonic distance sensor or a laser distance, for example. A sensor or the like can be used. The distance adjustment unit 13 is configured using, for example, a dedicated or general-purpose computer, and receives the distance detection signal of the distance detection unit 11, the tension detection signal of the load tension detection unit, and the rotation speed signal of the motor, A flow rate regulator (not shown) such as a flow rate adjustment valve provided in the gas source 9 or the gas supply pipe 91 is controlled to adjust the gas blowing amount or the gas supply pressure. The amount of gas blown out or the supply pressure is adjusted by an amount determined by a function of the rotational speed of the roll body 2.

<Effect of this embodiment>
According to the induction heating roller device 100 according to the present embodiment configured as described above, the gas blowing port 202 is provided on the entire circumference of the roller body 2, and the metal foil W is partially or completely floated from the roller body 2. It is possible to prevent scratches and wrinkles caused by sliding with the roller body surface due to rapid thermal expansion. Further, when it is completely lifted, scratches caused by the difference between the rotational speed of the roller body 2 and the speed of the metal foil W can be prevented. Furthermore, since the angular range θ in the circumferential direction of the gas blowing region X is changed by the blowing region changing mechanism 8, it is possible to easily change the metal foil W to partially float or completely float. In addition, the single induction heating roller 100 can easily cope with various pass lines in which the contact area between the metal foil W and the roller body 2 is different.

<Other modified embodiments>
The present invention is not limited to the above embodiment.

  For example, as the opening shape in a state where the concave portion 811 is expanded, in addition to the above-described embodiment, as shown in FIG. 9A, the opening shape is gradually reduced from one to the other in the axial direction. Alternatively, as shown in FIG. 9B, it may be reduced in the axial direction from the center to one and the other. Further, as shown in FIG. 9C, it may have a substantially parallelogram shape, or as shown in FIG. 9D, it has a substantially trapezoidal shape in which the lower base extends in the circumferential direction. It may be a thing.

  Moreover, although the slide body 81 of the said embodiment is being fixed to the journal 4 with respect to the circumferential direction, you may comprise so that a slide in the circumferential direction is possible. In this case, by sliding the slide body 81 in the circumferential direction, as shown in FIG. 10, the gas blowing region X can be moved in the circumferential direction while maintaining its circumferential dimension, for example.

  Further, in addition to the above-described embodiment, as shown in FIG. 11, a plurality of introduction holes 84 a corresponding to the gas introduction passages 401 fitted so that the drive shaft 41 can rotate and opened on the side peripheral surface of the drive shaft 41. A first block body 84 having a cylindrical shape, for example, and a second block body 85 that surrounds the block body 84 and forms an introduction space S1 for introducing the gas from the gas supply pipe into the introduction hole 84a. It is also possible to change the gas introduction path 401 through which the gas is introduced by closing the introduction port 84a with the lid member 86. If this is the case, a state where the gas introduction path 401 and the introduction hole 84a do not communicate with each other occurs when the journal 4 rotates, but the gas blowing region X can be changed. In addition, a state where the bottom surface communicates with the gas introduction path 401 on the outer peripheral surface of the journal 4 and the groove 4m larger than the opening of the gas introduction hole 401 is provided, the state where the gas introduction path 401 and the introduction hole 84a do not communicate with each other is possible. It is as short as possible.

  In addition, in the above embodiment, the gas is introduced into the gas introduction path opened in the side peripheral surface of the journal. However, in the case where the gas flow passage opens in the side peripheral surface of the roller body, the slide body is used. By providing it on the side peripheral surface of the roller body, the gas blowing area can be changed.

  In addition to the configuration in which two gas flow paths are connected to one gas introduction path, one gas flow path or three or more gas flow paths may be connected to one gas introduction path. In addition, when one gas flow path is connected to one gas introduction path, the gas blowing region can be finely changed in the circumferential direction.

  In addition, the embodiment has described the induction heating roller device as the heating roller device, but in addition, a heating roller device in which a heating mechanism such as a heater is arranged in the hollow of the roller body, or a heat medium in the hollow of the roller body. The present invention can also be applied to a fluid flow roller device having a heat medium flow mechanism that heats or cools the roller body by flowing.

  In addition, it goes without saying that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

100: Induction heating roller device (roller device)
W ... Metal foil (object to be heated)
2 ... Roller body 21 ... Side peripheral wall 201 of the roller body ... Gas flow passage 202 ... Gas outlet 3 ... Induction heating mechanism (heating mechanism)
4 ... Journal 401 ... Gas introduction path 51 ... Machine stand X ... Gas blowing area θ ... Angular range 8 in the circumferential direction ... Blowing area changing mechanism 81 ... Slide body 811 .... Recess S ... Gas supply space 9 ... Gas source

Claims (4)

A roller body rotatably supported;
A mechanism provided in the hollow of the roller body, for heating or cooling the roller body;
A plurality of gas flow passages which are provided at intervals over the entire circumference of the side peripheral wall of the roller body, and which circulate gas along the axial direction;
A plurality of gas outlets provided corresponding to the respective gas flow passages, communicating with the gas flow passages and opening on the surface of the roller body;
A journal fixed to the axial end of the roller body and rotatably supported by a machine base;
A plurality of gas introduction paths provided on the side peripheral wall of the journal, one end communicating with the gas flow path and the other end opening on the side peripheral surface of the journal;
A gas that blows out gas from the gas outlet by changing a gas introduction path that introduces gas among the plurality of gas introduction paths, thereby changing a gas flow path that introduces gas among the plurality of gas flow paths. A balloon area changing mechanism for changing the balloon area in the circumferential direction;
The blowing area changing mechanism has a slide body fixed to the journal in the circumferential direction and mounted so as to be slidable in the axial direction.
The slide body introduces a gas supplied from a gas source into the gas introduction path, and a recess for forming a gas supply space is formed between the inner surface and a side peripheral surface of the journal, A roller device in which a numerical aperture of a gas introduction path communicating with the recess is changed according to an axial position with respect to the journal.   The blowing region changing mechanism introduces gas into a gas flow passage that is continuous in the circumferential direction, and changes the number of gas flow passages that are continuous in the circumferential direction to change the circumferential angle range of the gas blowing region. The roller device according to claim 1, wherein the roller device is changed. Each gas inlet passage, two or more gas flow passage and the connected claim 1 or 2, wherein the roller device. The roller device according to any one of claims 1 to 3 , wherein the roller device is an induction heat roller device that performs induction heat generation on the roller body.