JP7105631B2 - pattern transfer device - Google Patents

Description

The present embodiment relates to a pattern transfer device.

Conventionally, the pattern is transferred to the photocurable resin by wrapping the base material coated with the photocurable resin around a transfer roll having a pattern formed on the outer peripheral surface, with the photocurable resin covering the pattern. A pattern transfer device is known that applies light to the transferred pattern to cure it.

JP 2013-35243 A

For example, it would be beneficial if a novel pattern transfer apparatus with less inconvenience could be obtained, such as suppressing variations in the shape and size of the pattern transferred to the photocurable resin depending on the location.

The pattern transfer device of the embodiment applies, for example, a photocurable resin to the first surface of a substrate that has a first surface and a second surface opposite to the first surface and is conveyed in the longitudinal direction. and an outer peripheral surface provided with a pattern. A transfer roll that transfers the pattern to the photocurable resin, a pressing roll that presses the second surface of the base material coated with the photocurable resin toward the transfer roll, and the photocurable resin to which the pattern has been transferred. It has a light irradiation mechanism that cures the photocurable resin by irradiating light, a piston that presses the pressure roll toward the transfer roll, and a cylinder that movably accommodates the piston, and the piston faces the A press mechanism for pressurizing the piston by fluid pressure in the pressure chamber, a pressure adjustment mechanism for adjusting the pressure in the pressure chamber to be constant, and a swing support mechanism for swingably supporting the pressure roll. And prepare.

FIG. 1 is an exemplary and schematic configuration diagram of a pattern transfer device according to an embodiment. FIG. 2 is an exemplary schematic cross-sectional view of a transfer roll included in the pattern transfer device of the embodiment. FIG. 3 is an exemplary and schematic cross-sectional view of the transfer roll included in the pattern transfer device of the embodiment at the position III-III in FIG. FIG. 4 is an exemplary and schematic configuration diagram of a swing support mechanism and a pressing mechanism included in the pattern transfer device of the embodiment. FIG. 5 is an exemplary and schematic configuration diagram of the rocking support mechanism and the pressing mechanism included in the pattern transfer device of the embodiment when viewed in the V direction of FIG. 4 . FIG. 6 is an exemplary and schematic configuration diagram of a pattern transfer device according to a modification of the embodiment.

Exemplary embodiments and variations of the invention are disclosed below. The configurations of the embodiments and modifications shown below, and the actions and results (effects) brought about by the configurations are examples. The present invention can be realized by configurations other than those disclosed in the following embodiments and modifications. Moreover, according to the present invention, at least one of various effects (including derivative effects) obtained by the configuration can be obtained.

Also, the following embodiments and modifications include similar components. Therefore, hereinafter, similar components are given common reference numerals, and overlapping descriptions are omitted. In this specification, ordinal numbers are given for the sake of convenience in order to distinguish parts, parts, etc., and do not indicate priority or order.

[Embodiment]
FIG. 1 is a configuration diagram of a pattern transfer device 1. As shown in FIG. An object to be processed by the pattern transfer apparatus 1 is a strip-shaped film 100 having a substantially constant width. The strip-shaped film 100 has a first surface 100a and a second surface 100b opposite to the first surface 100a. The strip-shaped film 100 is made of, for example, a synthetic resin material, but is not limited to this. Strip film 100 may also be referred to as a web. Strip film 100 is an example of a substrate.

The pattern transfer device 1 applies a predetermined treatment to the first surface 100a while continuously or intermittently conveying the strip-shaped film 100 in its longitudinal direction, thereby forming a pattern on the first surface 100a along its longitudinal direction. to form a molding layer 100c having an uneven shape. The first surface 100a of the film strip 100 can also be referred to as the treated surface or front surface, and the second surface 100b can also be referred to as the untreated surface or back surface.

The pattern transfer device 1 includes a feeding mechanism 10 , a winding mechanism 20 , a coating mechanism 30 , a transfer mechanism 40 and a light irradiation mechanism 50 .

The belt-shaped film 100 is conveyed by the feeding mechanism 10 and the winding mechanism 20 between the feeding mechanism 10 and the winding mechanism 20 . Therefore, the delivery mechanism 10 and the winding mechanism 20 can also be called a transport mechanism.

The delivery mechanism 10 is positioned at the upstream end (rear end) of the strip film 100 in the transport direction. The delivery mechanism 10 has a delivery shaft 11 . The delivery shaft 11 has a columnar or cylindrical shape. An untreated belt-shaped film 100 is wound around the delivery shaft 11 . As a motor (not shown) controlled by a control device (not shown) rotates the feeding shaft 11 around the central axis C1, the strip film 100 wound around the feeding shaft 11 moves downstream (forward) in the conveying direction. (right side in FIG. 1).

The winding mechanism 20 is positioned at the downstream end (front end) of the strip film 100 in the transport direction. The winding mechanism 20 has a winding shaft 21 . The winding shaft 21 has a columnar or cylindrical shape. As a motor (not shown) controlled by a control device rotates the winding shaft 21 around the central axis C2, the treated strip film 100, that is, the treated molding layer 100c on the first surface 100a. The belt-shaped film 100 thus held is wound around the winding shaft 21 . The control device controls the motors that rotate the delivery shaft 11 and the take-up shaft 21 to apply a required tension to the film strip 100 and convey the film strip 100 at a required speed. The required speed can be arbitrarily set according to the specifications of the strip film 100, the molding layer 100c, and others, and is, for example, 0.5 to 30 meters/minute.

The coating mechanism 30 is positioned downstream of the delivery mechanism 10 in the conveying direction of the strip-shaped film 100, and coats the first surface 100a of the strip-shaped film 100 with, for example, a molding layer 100c having a substantially constant thickness. . The molding layer 100c is, for example, a synthetic resin material having a photo-curing property that is cured by irradiation of light such as ultraviolet rays. The molding layer 100c is relatively flexible before being exposed to light. The molding layer 100c is an example of a photocurable resin. The molding layer 100c can also be called a photocurable resin layer or a photosensitive resin.

The transfer mechanism 40 is positioned downstream of the coating mechanism 30 in the conveying direction of the strip-shaped film 100 . The transfer mechanism 40 has a transfer roll 41 , a pressure roll 42 and a peel roll 43 . The transfer roll 41, the pressure roll 42, and the peel roll 43 are arranged substantially parallel to each other. The transfer roll 41 has a cylindrical shape, and the pressing roll 42 and the peeling roll 43 each have a columnar or cylindrical shape. The pressing roll 42 and the peeling roll 43 are arranged with gaps g1 and g2 from the transfer roll 41, respectively. The gap g2 is located downstream of the gap g1 in the transport direction. The belt-like film 100 is stretched between the feeding shaft 11 and the pressure roll 42 with a required tension applied thereto, and is stretched around the outer peripheral surface 41 a of the transfer roll 41 between the pressure roll 42 and the peeling roll 43 . In addition to being wrapped around, the stripping roll 43 and the take-up shaft 21 are stretched under a required tension. As the film strip 100 is transported, the portion of the film strip 100 coated with the molding layer 100c by the coating mechanism 30 approaches the press roll 42, moves along the outer periphery of the press roll 42, and passes the gap g1. , moves along the outer peripheral surface 41a of the transfer roll 41, passes through the gap g2, moves along the outer periphery of the peeling roll 43, separates from the peeling roll 43, moves to the winding shaft 21, and moves to the winding shaft 21. It is wound around the shaft 21 .

The transfer roll 41 is rotatable about a central axis C3 by a motor (not shown) controlled by a control device. In the pattern transfer device 1, the control device controls the motor that rotates the transfer roll 41 so that the transfer roll 41 rotates in a predetermined rotational state such that the rotation speed is constant, and the belt-shaped film 100 rotates on the outer peripheral surface of the transfer roll 41. A motor for rotating the delivery shaft 11 and the winding shaft 21 is controlled so as not to move relative to 41a, that is, not to slip.

The pressing roll 42 and the peeling roll 43 are not driven rolls that are rotated by a motor, but driven rolls that rotate as the film strip 100 moves. However, the peel roll 43 may be a driving roll.

An outer peripheral surface 41a of the transfer roll 41 is provided with an uneven pattern 41b. The strip film 100 having the molding layer 100c coated on the first surface 100a is wound around the transfer roll 41 between the pressing roll 42 and the peeling roll 43 with the molding layer 100c in contact with the outer peripheral surface 41a. Therefore, the outer circumference of the pressing roll 42 is in contact with the second surface 100b of the strip film 100 . When the belt-shaped film 100 coated with the molding layer 100c passes through the gap g1, the pressing mechanism 80 operates so that the pressing roll 42 rotates and presses the second surface 100b of the belt-shaped film 100 to the outer peripheral surface 41a of the transfer roll 41. press. The molding layer 100c deforms following the pattern 41b of the outer peripheral surface 41a, and the pattern 41b is transferred to the molding layer 100c. Note that the roll portion of the pressing roll 42 can be made of, for example, an elastomer, but is not limited to this.

Further, as described above, the strip-shaped film 100 is stretched between the stripping roll 43 and the winding shaft 21 with the required tension applied, and wound around the stripping roll 43. It is pressed radially inwardly against the peeling roll 43 . Therefore, the strip-shaped film 100 moves along the peeling roll 43 downstream of the gap g<b>2 , thereby separating from the transfer roll 41 .

The light irradiation mechanism 50 is positioned inside the transfer roll 41 . A peripheral wall 410 of the transfer roll 41 transmits light for curing the molding layer 100c. Therefore, the light emitted from the light irradiation mechanism 50 passes through the peripheral wall 410 of the transfer roll 41 and hardens the molding layer 100c wound around the outer peripheral surface 41a of the transfer roll 41 . The photocurable resin is, for example, an ultraviolet curable resin, and in that case, the light emitted from the light irradiation mechanism 50 is, for example, ultraviolet light. The strip film 100 coated with the unexposed molding layer 100c and the strip film 100 having the molding layer 100c cured by exposure have flexibility. , and winding shaft 21 .

FIG. 2 is a cross-sectional view of the transfer roll 41 taken along the central axis C3. As shown in FIG. 2, the transfer roll 41 has a cylindrical peripheral wall 410 and end portions 41c and 41d fixed to both ends of the peripheral wall 410 in the axial direction.

The end portion 41c has a base 41c1 and a shaft 41c2. The base 41c1 has a disk-like shape and is fixed to one open end 411a (on the right side in FIG. 2) of the peripheral wall 410 by, for example, press fitting or adhesion. The shaft 41c2 has a cylindrical shape and protrudes from the base 41c1 along the central axis C3 to the side opposite to the end portion 41d. The end portion 41c is rotatably supported by the support member 40b via the bearing 40a.

The end portion 41d has a base 41d1 and a shaft 41d2. The base 41d1 has a cylindrical shape and is fixed to the other (left side in FIG. 2) open end 411b of the peripheral wall 410 by, for example, press fitting or adhesion. The shaft 41d2 has a cylindrical shape and protrudes from the base 41d1 along the central axis C3 to the side opposite to the end portion 41c. The end portion 41d is rotatably supported by a support member 40c via a bearing 40a.

By forming the peripheral wall 410 and the end portions 41c and 41d from different members in this manner, for example, the transfer roll 41 can be formed from a suitable material according to the part, and the labor and cost of manufacturing can be reduced. effect is obtained.

A motor (not shown) controlled by a control device (not shown) rotates the end portion 41c, thereby rotating the transfer roll 41 around the central axis C3 at a substantially constant rotational speed. An end portion 41d of the transfer roll 41 opposite to the end portion 41c driven by the motor is provided with a substantially cylindrical opening 41e. The opening 41e is covered with a lid 44 detachably attached to the support member 40c. The lid 44 has a substantially disk-shaped plate 44a intersecting the central axis C3, and a pin 44b protruding from the peripheral edge of the plate 44a in the axial direction of the central axis C3. With the cover 44 attached to the support member 40c by a fastener (not shown) such as a bolt, the pin 44b is accommodated in the accommodation hole 40d provided in the support member 40c. The receiving hole 40 d and the pin 44 b can be used for positioning the lid 44 . The end portion 41d is an example of one end of the transfer roll 41 in the axial direction.

The light irradiation mechanism 50 has a light source unit 51 extending along the axial direction of the central axis C3 and a shaft 52 extending along the axial direction and fixedly coupled to the light source unit 51 . One end 52b of the shaft 52 is fixed to the lid 44, and the other end 52a of the shaft 52 is rotatably supported by the end 41c of the transfer roll 41 via a bearing 50a. With such a configuration, even when the transfer roll 41 rotates, the end portion 52a of the shaft 52 rotates relative to the transfer roll 41, and the end portion 52b of the shaft 52 rotates the lid 44 and thus the support member. 40c, the light source unit 51 remains stationary without rotating. Therefore, the light source unit 51 can irradiate light in a fixed direction regardless of the rotation of the transfer roll 41 . The end portion 52 a is an example of the other axial end of the transfer roll 41 of the light irradiation mechanism 50 , and the end portion 52 b is an example of an axial end of the transfer roll 41 of the light irradiation mechanism 50 . The lid 44 is an example of a support member that fixedly supports the end portion 52b of the light irradiation mechanism 50 . It should be noted that the end portion 52b does not need to be rigidly fixed to the lid 44 or the support member 40c. , the cover 44 or the support member 40c may restrict the rotation of the end portion 52b and the light source unit 51 about the central axis C3. Alternatively, the end portion 52a may be fixedly supported by the lid 44 or the support member 40b, and the end portion 52b may be rotatably supported by the transfer roll 41. FIG. In that case, the opening 41 e is provided at the end 41 c of the transfer roll 41 .

Here, the opening 41e is arranged at the end portion 41d of the transfer roll 41 so that the light irradiation mechanism 50 can be passed in the axial direction of the central axis C3. is opened so that the light irradiation mechanism 50 can be taken in and out in the axial direction. Further, as described above, the lid 44 covers the opening 41e so as to be openable and closable (detachable) in the axial direction of the central axis C3. Therefore, according to such a configuration, by opening (removing) the cover 44, the light irradiation mechanism 50 can be taken out from the inside of the transfer roll 41 while the transfer roll 41 is installed in the pattern transfer device 1. , the light irradiation mechanism 50 can be inserted into the transfer roll 41 and set at a predetermined position and in a predetermined posture.

Further, the transfer roll 41 is provided with an opening 41f. The opening 41f penetrates the end portion 41c of the transfer roll 41 in the axial direction of the central axis C3. Air can flow from the inside to the outside of the transfer roll 41 or from the outside to the inside at the openings 41f. On the other hand, the lid 44 is provided with an opening 44c that communicates with the opening 41e provided at the end 41d of the transfer roll 41 . The opening 44c penetrates the lid 44 in the axial direction of the central axis C3. At the openings 41e and 44c, the air can flow from the inside to the outside of the transfer roll 41 or from the outside to the inside.

The pattern transfer apparatus 1 is provided with an air cooling mechanism 60 for the light irradiation mechanism 50 using these openings 41f, 41e, and 44c. When the viscosity of the molding layer 100c decreases due to the heat of polymerization of the photocurable resin and the heat generated by the light irradiation mechanism 50, the shape and dimensions of the pattern transferred to the molding layer 100c change over time, resulting in variations over time. There is a possibility that it may be a factor. The air cooling mechanism 60 can suppress the occurrence of such variations in shape and size over time.

The air cooling mechanism 60 has a blower 61 and a passage forming member 62 . The passage forming member 62 constitutes an air passage connected to the opening 44c which is stationary regardless of the rotation of the transfer roll 41, and is, for example, a duct, a tube, a block provided with a hole, or the like. The blower 61 is a fan or blower, for example, that produces an air flow through the air passage. The blower 61 can exhaust air from the internal space S of the transfer roll 41 . In this case, an air flow is formed from the outside of the transfer roll 41 through the opening 41f, the internal space S, the opening 41e, the opening 44c, and the air passage in the passage forming member 62. FIG. Also, the blower 61 may supply air into the internal space S. In that case, an air flow is formed through the air passage in the passage forming member 62, the opening 44c, the opening 41e, the internal space S, and the opening 41f. The cooling medium of the air cooling mechanism 60 may be indoor air, air contained in a tank or the like, or gas other than air, such as nitrogen.

In this embodiment, the peripheral wall 410 of the transfer roll 41 entirely transmits the light emitted from the light irradiation mechanism 50 . The peripheral wall 410 is an example of a transmissive region. In addition, the peripheral wall 410 may not transmit the light emitted from the light irradiation mechanism 50 as a whole, and a part of the peripheral wall 410 may be provided with a transmission region.

FIG. 3 is a cross-sectional view of the transfer roll 41 at position III-III in FIG. As shown in FIG. 3, the peripheral wall 410 has a pipe 411, an adhesive layer 412, and a surrounding layer 413 which overlap in the radial direction of the central axis C3.

The shape of the pipe 411 is substantially cylindrical. The center of the pipe 411 substantially coincides with the central axis C3 of the transfer roll 41 . The material of the pipe 411 is, for example, borosilicate glass. However, the material of the pipe 411 is not limited to borosilicate glass, and any transparent material that transmits the light emitted from the light irradiation mechanism 50 may be used. When the pipe 411 is made of borosilicate glass or synthetic resin material, the pipe 411 and thus the transfer roll 41 can be made at a lower cost than when the pipe 411 is made of quartz glass. The pipe 411 as a whole transmits light emitted from the light irradiation mechanism 50 . Pipe 411 is an example of a first member having a first transmissive area that is part of the transmissive area. In addition, the pipe 411 may not transmit the light emitted from the light irradiation mechanism 50 as a whole, and the pipe 411 may be partially provided with the first transmission region.

The surrounding layer 413 is adhered to the outer periphery of the pipe 411 by the adhesive layer 412 while being wound around the outer periphery of the pipe 411 so that the ends 413a and 413b in the circumferential direction of the central axis C3 are butted against each other. A joint PL is formed at a portion where the ends 413a and 413b extending in the axial direction of the central axis C3 meet. The surrounding layer 413 is flexible and curved along the outer peripheral surface of the pipe 411, that is, the cylindrical outer surface.

The surrounding layer 413 has a base layer 414 and a stamp layer 415 . The base layer 414 is in contact with the radially outer side of the adhesive layer 412 and has a substantially constant thickness. The stamp layer 415 is in contact with the radially outer side of the base layer 414 . An uneven pattern 41 b is provided on the outer periphery (outer surface) of the stamping layer 415 as the outer peripheral surface 41 a of the transfer roll 41 . Both the base layer 414 and the impression layer 415 are entirely transparent to the light emitted from the light irradiation mechanism 50 . Therefore, the surrounding layer 413 also entirely transmits the light emitted from the light irradiation mechanism 50 . Surrounding layer 413 is an example of a second member having a second transmissive region that is part of the transmissive region. The surrounding layer 413 may not transmit the light emitted from the light irradiation mechanism 50 as a whole, and the surrounding layer 413 may be partially provided with a second transmission region.

Surrounding layer 413 may be a product of pattern transfer device 1 . In this case, the strip film 100 becomes the base layer 414 and the hardened molding layer 100c becomes the stamping layer 415 .

The adhesive layer 412 bonds the pipe 411 and the surrounding layer 413 together with no gas present between the pipe 411 and the surrounding layer 413 . The adhesive layer 412 may be, for example, a double-sided tape in which adhesive is applied to both sides of a base layer (not shown), or may be an adhesive layer. Adhesive layer 412 also forms part of the transmissive region. The adhesive layer 412 also entirely transmits the light emitted from the light irradiation mechanism 50 . In addition, the adhesive layer 412 may not transmit the light emitted from the light irradiation mechanism 50 as a whole, and a part of the adhesive layer 412 may be provided with a transmission region.

As described above, the peripheral wall 410 of the transfer roll 41 has the pipe 411 and the surrounding layer 413 in which the pattern 41b is formed on the outer periphery of the pipe 411 and surrounds the pipe 411 . , the labor and cost of manufacturing can be reduced. Moreover, by using a general-purpose product as the pipe 411, it is possible to further reduce the manufacturing cost.

4 is a configuration diagram of the rocking support mechanism 70 and the pressing mechanism 80, and FIG. 5 is a configuration diagram of the rocking support mechanism 70 and the pressing mechanism 80 when viewed in the direction V in FIG.

The pressure roll 42 is swingably supported by a swing support mechanism 70 so that it can follow the inclination of the outer peripheral surface 41 a of the transfer roll 41 according to unevenness and deformation of the transfer roll 41 . The rocking support mechanism 70 has two rails 70a, two sliders 70b, two housings 70c, and two bearings 70d.

As shown in FIG. 4, the two rails 70a are parallel to each other and each support the slider 70b so as to reciprocate in its longitudinal direction. The slider 70b supports the ends 42a and 42b of the pressure roll 42 via housings 70c and bearings 70d, respectively. That is, the rocking support mechanism 70 supports the pressing roll 42 so as to be slidable along the longitudinal direction of the two rails 70a. Therefore, the rocking support mechanism 70 can also be called a slide support mechanism or a support mechanism.

In the view of FIG. 5, the two rails 70a overlap each other. The distance between one rail 70a and the central axis C4 of the pressing roll 42 and the distance between the other rail 70a and the central axis C4 are the same distance (=D). Therefore, the central axis C4 is an imaginary plane that is parallel to the two rails 70a and parallel to the direction perpendicular to the paper surface of FIG. You can move along Pv. The virtual plane Pv is a plane containing the central axis C4. The virtual plane Pv also includes the central axis C3 of the desired position. The virtual plane Pv is along the paper surface of FIG. The virtual plane Pv can also be called a slide plane.

With such a configuration, the pressing roll 42 can move along the longitudinal direction of the rails 70a, in other words, along the imaginary plane Pv parallel to the two rails 70a to press the transfer roll 41 . The direction in which the pressing roll 42 is pressed by the pressing mechanism 80, that is, the direction in which the strip-shaped film 100 is pressed against the transfer roll 41 by the pressing roll 42 is the longitudinal direction of the rail 70a.

Further, as described above, the housing 70c supports the ends 42a and 42b of the pressing roll 42 via the bearings 70d so as to be rotatable around the central axis C4. Here, the bearing 70d is a self-aligning bearing having an outer ring 70d1 and an inner ring 70d2 swingably supported with respect to the outer ring 70d1. The inner ring 70d2 is supported by the outer ring 70d1 so as to be swingable about the swing axis AxS perpendicular to the virtual plane Pv. One outer ring 70d1 of the two bearings 70d is fixed to one housing 70c in the axial direction of the outer ring 70d1, and the other outer ring 70d1 is supported by another housing 70c so as to be movable in the axial direction of the outer ring 70d1. It is

With such a configuration, the pressing roll 42 can swing within a virtual plane Pv that includes the central axis C4 and is substantially parallel to the two rails 70a. The virtual plane Pv can also be referred to as a swing plane.

As shown in FIG. 4, the pressing mechanism 80 has two pressing units 81A and 81B that press the pressing roll 42 closer to the transfer roll 41 by the pressure of the working fluid. The pressing unit 81A presses one axial end 42a of the pressing roll 42 toward the transfer roll 41, and the pressing unit 81B presses the other axial end 42b of the pressing roll 42 against the transfer roll 41. press toward. The pressing unit 81A has a cylinder 82 and a piston 83 movably housed in the cylinder 82 . A pressure chamber R is formed between the cylinder 82 and the piston 83 , and the piston 83 that receives pressure from the pressure chamber R presses the end portion 42 a via the rod 84 . The pressing unit 81B has the same configuration as the pressing unit 81A. The pressing direction of the pressing roll 42 by the pressing units 81A and 81B is substantially parallel to the longitudinal direction of the rail 70a. The two pressing units 81A, 81B are fluid cylinders. As the fluid cylinder, a cylinder with low sliding resistance, such as a bellofram cylinder, can be used. The working fluid is, for example, a gas such as air. In that case, the two pressing units 81A, 81B are pneumatic cylinders. The pressing unit 81A is an example of a first pressing unit, the pressing unit 81B is an example of a second pressing unit, the end portion 42a is an example of one axial end of the pressing roll 42, and the end portion 42b is , is an example of the other end of the pressing roll 42 in the axial direction. Also, the ends 42 a and 42 b are an example of both ends of the pressing roll 42 in the axial direction.

The pressure of the working fluid inside the pressure chamber R is maintained at a constant pressure by the pressure adjustment mechanism 85 . Here, the constant pressure means a substantially constant pressure, for example, a pressure within the pressure adjustment range (pressure override characteristic) of the pressure adjustment mechanism 85 . The pressure regulation mechanism 85 illustrated in FIG. 5 as an example is a fluid circuit. When the working fluid is gas such as air, the pressure regulation mechanism 85 is a pneumatic circuit. The pressure regulation mechanism 85 has a regulator 85a. The pressure adjustment value of the regulator 85a is appropriately set according to the specifications of the pattern 41b and the molding layer 100c so as to obtain the desired shape and dimensions. Further, the regulator 85a is an external pilot type regulator, and can variably set the pressure adjustment value of the regulator 85a by inputting the signal pressure from the pressure setting valve 85b. The pressure setting valve 85b may be electromagnetic or manual. It should be noted that the regulator 85a may be other regulators such as, for example, an internal pilot regulator or a direct acting regulator. The pressure adjustment mechanism 85 may be provided in each of the pressing units 81A and 81B, or may be shared by the two pressing units 81A and 81B.

As described above, in this embodiment, the pattern transfer device 1 includes the pressing mechanism 80 and the pressure adjusting mechanism 85 . A piston 83 of the pressing mechanism 80 presses the pressing roll 42 so that the pressing roll 42 is pressed toward the transfer roll 41 , and a cylinder 82 of the pressing mechanism 80 movably accommodates the corresponding piston 83 . is pressurized by the fluid pressure in the pressure chamber R. The pressure adjustment mechanism 85 adjusts the pressure inside the pressure chamber R to a constant pressure. According to such a configuration, for example, the pressing mechanism 80 can press the pressing roll 42 toward the transfer roll 41 with a constant force while causing the pressing roll 42 to follow the transfer roll 41 . It is possible to suppress variation in the shape and size of the pattern transferred to 100c (photocurable resin) depending on the location. If the pattern transfer device 1 does not have the pressing mechanism 80 and the pressure adjusting mechanism 85, for example, if the roundness of the transfer roll 41 is low, the pressure roll 42 is larger than the radius of the transfer roll 41. When the pressure roll 42 presses a portion with a relatively large radius, the pressure roll 42 presses a portion of the transfer roll 41 with a relatively small radius. There is a risk that variations in shape and size will increase depending on the location of the formed pattern. In this regard, since the pattern transfer device 1 of the present embodiment includes the pressing mechanism 80 and the pressure adjusting mechanism 85, when the roundness of the transfer roll 41 is large, in other words, the transfer roll 41 Even if the position of the portion of the outer peripheral surface 41a that contacts the pressure roll 42 (hereinafter referred to as the contact portion Pc) changes with the rotation of the transfer roll 41, the pressure roll 42 is positioned at the contact portion Pc. The transfer roll 41 can be pressed with a constant force following the change in position. Therefore, according to the pattern transfer apparatus 1, it is possible to suppress variations in the shape and size of the pattern transferred to the molding layer 100c depending on the location.

Further, in this embodiment, the pattern transfer device 1 includes a rocking support mechanism 70 that rockably supports the pressing roll 42 . According to such a configuration, for example, the contact portion Pc of the transfer roller 41 can be pressed with substantially constant force regardless of the position or posture (inclination) of the contact portion Pc. Therefore, according to the pattern transfer apparatus 1, it is possible to further suppress variation in the shape and size of the pattern transferred to the molding layer 100c depending on the location. As a result, for example, even when the coaxiality between the ends 41c and 41d of the transfer roll 41 is large, or when the transfer roll 41 is inclined with respect to the pressure roll 42, the transfer roll 41 Since the posture of the pressing roll 42 changes in accordance with the change in the inclination angle of the (contact portion Pc), it is possible to suppress variations in the shape and size of the pattern transferred to the molding layer 100c depending on the location.

Further, in this embodiment, the pressing mechanism 80 presses the ends 42 a and 42 b (both ends) of the pressing roll 42 . According to such a configuration, it is possible to suppress variation in the pressing force depending on the location of the contact portion Pc, and suppress variation in the shape and size of the pattern transferred to the molding layer 100c depending on the location.

Further, in the present embodiment, the pressing mechanism 80 includes a pressing unit 81A (first a pressing unit), a pressing unit 81B (second pressing unit) having a piston 83 that presses the end 42b (the other end) of the pressing roll 42, and a cylinder 82 that movably accommodates the piston 83. have. If one pressing unit presses the ends 42a and 42b on both sides in the axial direction of the pressing roll 42 via a forked arm or the like, the one pressing unit may be large, or the required rigidity and strength of the arm may be required. There is a risk that the size of the arm and thus of the pattern transfer device 1 will be increased in order to ensure . In this respect, according to this embodiment, the pistons 83 of the two pressing units 81A and 81B press the ends 42a and 42b of the pressing roll 42, respectively, so that such an inconvenient phenomenon can be avoided and pattern The transfer device 1 can be made smaller.

Further, in the present embodiment, the transfer roll 41 has a cylindrical peripheral wall 410 that transmits the irradiated light, and the light irradiation mechanism 50 is accommodated in the peripheral wall 410, and the light emitted from the light irradiation mechanism 50 is passes through the peripheral wall 410 and irradiates the photocurable resin layer. An axial end portion 52b (one end) of the light irradiation mechanism 50 is supported by a lid 44 (supporting member) so as to be non-rotatable at least in the circumferential direction of the transfer roll 41, and an axial end portion 52a (the other end) of the light irradiation mechanism 50 is end) is rotatably supported by the transfer roll 41 . If the end portion 52a is rotatably supported by the support member 40b instead of the transfer roll 41, the end portion 52a must pass through the end portion 41c of the transfer roll 41 in the axial direction. Since the end portion 52a exists in the through hole, the end portion 41c is thickened. Further, in that case, since the end portion 52a of the light irradiation mechanism 50, which is a stationary portion, is positioned near the central axis C3, the motor that rotationally drives the end portion 41c cannot be arranged near the central axis C3. A more complicated mechanism is required to transmit the rotation of the motor eccentrically arranged with respect to the central axis C3 to the outer periphery of the end portion 41c via a rotation transmission mechanism such as gears and belts. In addition, if a gear or belt is used, fluctuations in the rotational speed of the transfer roll 41 and thus the speed of the belt-like film 100 will increase, and there is a risk that the quality of the molded product will deteriorate. In this regard, in the pattern transfer device 1 of the present embodiment, the end portion 52a is rotatably supported by the transfer roll 41, and the end portion 41c does not need to be penetrated, so that the end portion 41c is configured to be smaller in the radial direction. can do. In addition, since the end portion 41c can be rotationally driven by a motor aligned in the axial direction of the central axis C3, the configuration for rotationally driving the transfer roll 41 can be made smaller and simpler, and the number of parts can be increased. is reduced, labor and cost for manufacturing the pattern transfer device 1 can be reduced.

In the present embodiment, an axial end 41d (one end) of the transfer roll 41 is provided with an opening 41e through which the light irradiation mechanism 50 can be moved in and out in the axial direction. can be opened and closed. According to such a configuration, for example, a configuration in which the light irradiation mechanism 50 can be moved in and out of the transfer roll 41 can be realized with a relatively simple configuration. In addition, since the lid 44 is configured as a support member, the number of parts can be reduced compared to the case where the lid 44 and the support member are configured separately, and the labor and cost of manufacturing the pattern transfer device 1 can be reduced.

Further, in this embodiment, an air cooling mechanism 60 that cools the light irradiation mechanism 50 with gas is provided inside the transfer roll 41 . With such a configuration, for example, the cooling mechanism for the light irradiation mechanism 50 can be realized with a relatively simple configuration compared to a configuration in which a liquid cooling mechanism such as an oil cooling mechanism is provided.

Further, in this embodiment, the transfer roll 41 has a pipe 411 (first transmission region, first member) and a surrounding layer 413 (second transmission region, second member). It overlaps the pipe 411 and the transfer roll 41 in the radial direction and is fixed to the pipe 411 while being wound around the pipe 411 . According to such a configuration, for example, the transfer roll 41 can be obtained by winding the surrounding layer 413 having the pattern 41 b around the pipe 411 . Therefore, compared to the case where the pattern 41b is directly formed on the outer periphery of the pipe 411, the labor and cost of manufacturing the transfer roll 41 and thus the pattern transfer device 1 can be reduced.

Also, in this embodiment, the surrounding layer 413 may be manufactured by the pattern transfer device 1 . In this case, the surrounding layer 413 is relatively elastically deformable, and the outer peripheral surface 41 a of the transfer roll 41 is likely to be uneven. However, since the pattern transfer apparatus 1 of the present embodiment includes the pressing mechanism 80, the pressure adjusting mechanism 85, and the swing support mechanism 70, the characteristics of the surrounding layer 413 allow the pattern to be transferred to the molding layer 100c (photocurable resin). It is possible to suppress the occurrence of variations in shape and size depending on the location of the formed pattern. That is, the pattern transfer device 1 of this embodiment is more effective when the surrounding layer 413 of the transfer roll 41 is manufactured by the pattern transfer device 1 .

[Modification]
FIG. 6 is a configuration diagram of a pattern transfer device 1A of a modified example of the embodiment. The pattern transfer device 1A differs from the above embodiment in that the light irradiation mechanism 50 irradiates light from the outside of the transfer roll 41 . In this case, the strip film 100 needs to transmit light. Even in such a modified example, similar actions and effects based on the same configuration as the above-described embodiment can be obtained.

Although the embodiment of the present invention has been illustrated above, the above embodiment is an example and is not intended to limit the scope of the invention. Embodiments can be implemented in various other forms, and various omissions, replacements, combinations, and modifications can be made without departing from the scope of the invention. Embodiments are included in the scope and gist of the invention, and are included in the scope of the invention described in the claims and equivalents thereof. Also, the configurations and shapes of the embodiments can be partially exchanged. In addition, specifications such as each configuration and shape (structure, type, direction, format, size, length, width, thickness, height, angle, number, arrangement, position, material, etc.) may be changed as appropriate. can be implemented.

For example, the rocking support mechanism that rockably supports the pressing roll is not limited to having self-aligning bearings, and is different from the above embodiments in that it has ball joints, bearings, sliders, and the like. good too. Also, the circuit configuration of the pressure adjustment mechanism is not limited to the above embodiment.

Further, in the above embodiments, a pattern transfer device for transferring a pattern to one side of a base material was disclosed, but the present invention is not limited to this, and a transfer device for transferring a pattern to both sides of a base material, or a transfer device for transferring a pattern to both sides of a base material It can also be configured as an apparatus for transferring a pattern to the other side of a base material having a pattern transferred to one side, or as an apparatus for repeatedly transferring patterns to the same side.

Reference Signs List 1 pattern transfer device 30 coating mechanism 41 transfer roll 41a outer peripheral surface 41b pattern 41d end (one end) 41e opening 42 pressure roll 42a end (pressure roll one end), 42b... end (other end of pressing roll), 44... lid (supporting member), 50... light irradiation mechanism, 52a... end (other end of light irradiation mechanism), 52b... end (light irradiation one end of mechanism), 60... air cooling mechanism, 80... pressing mechanism, 81A... pressing unit (first pressing unit), 81B... pressing unit (second pressing unit), 82... cylinder, 83... piston, 85... pressure adjusting mechanism , 100... Strip film (base material) 100a... First surface 100b... Second surface 100c... Molded layer (photocurable resin) 410... Peripheral wall 411... Pipe (first transmission region, transmission region, second 1 member), 412... adhesive layer (transmission region), 413... surrounding layer (second transmission region, transmission region, second member), R... pressure chamber.

Claims (8)

a coating mechanism for coating a photocurable resin on the first surface of a substrate having a first surface and a second surface opposite to the first surface and being transported in the longitudinal direction;
It has an outer peripheral surface provided with a pattern, and a substrate coated with the photocurable resin is wound around and rotated while the photocurable resin is in contact with the outer peripheral surface, and the photocurable resin a transfer roll that transfers the pattern to
a pressing roll that presses the second surface of the base material coated with the photocurable resin toward the transfer roll;
a light irradiation mechanism for curing the photocurable resin by irradiating light onto the photocurable resin to which the pattern has been transferred;
It has a piston that presses the pressure roll toward the transfer roll, and a cylinder that movably accommodates the piston. A pressure chamber facing the piston is provided. a pressing mechanism that presses the
a pressure adjustment mechanism for adjusting the pressure in the pressure chamber to a constant value;
a rocking support mechanism that rockably supports the pressing roll;
A pattern transfer device. a coating mechanism for coating a photocurable resin on the first surface of a substrate having a first surface and a second surface opposite to the first surface and being transported in the longitudinal direction;
It has an outer peripheral surface provided with a pattern, and a substrate coated with the photocurable resin is wound around and rotated while the photocurable resin is in contact with the outer peripheral surface, and the photocurable resin a transfer roll that transfers the pattern to
a pressing roll that presses the second surface of the base material coated with the photocurable resin toward the transfer roll;
a light irradiation mechanism for curing the photocurable resin by irradiating light onto the photocurable resin to which the pattern has been transferred;
A piston that presses the pressure roll toward the transfer roll and a cylinder that movably accommodates the piston are provided, and a pressure chamber facing the piston is provided. a pressing mechanism that presses the
a pressure adjustment mechanism for adjusting the pressure in the pressure chamber to a constant value;
with
The transfer roll has a cylindrical peripheral wall having the light transmission region,
The light irradiation mechanism is housed within the peripheral wall,
The light emitted from the light irradiation mechanism passes through the transmission region and is irradiated to the photocurable resin layer,
one end of the light irradiation mechanism in the axial direction of the transfer roll is unrotatably supported at least in the circumferential direction of the transfer roll by a support member;
The other end of the light irradiation mechanism in the axial direction of the transfer roll is rotatably supported by the transfer roll,
Pattern transfer device. 3. The pattern transfer device according to claim 1, wherein said pressing mechanism presses both axial ends of said pressing roll. The pressing mechanism is
a first pressing unit having the piston that presses one end of the pressing roll in the axial direction, and the cylinder that movably accommodates the piston;
4. The pattern transfer device according to claim 3, further comprising a second pressing unit having said piston pressing the other axial end of said pressing roll, and said cylinder movably housing said piston. . The transfer roll has a cylindrical peripheral wall having the light transmission region,
The light irradiation mechanism is housed within the peripheral wall,
The light emitted from the light irradiation mechanism passes through the transmission region and is irradiated to the photocurable resin layer,
one end of the light irradiation mechanism in the axial direction of the transfer roll is unrotatably supported at least in the circumferential direction of the transfer roll by a support member;
The other end of the light irradiation mechanism in the axial direction of the transfer roll is rotatably supported by the transfer roll,
Claim 1 The pattern transfer device according to . At one end of the transfer roll in the axial direction, an opening is provided through which the light irradiation mechanism can be moved in and out in the axial direction,
6. The pattern transfer device according to claim 2 , wherein said support member covers said opening so as to be openable and closable. 7. The pattern transfer apparatus according to claim 2 , wherein an air cooling mechanism for cooling said light irradiation mechanism with gas is provided in said peripheral wall. The transfer roll is
a cylindrical first member having a first transmissive region as part of the transmissive region;
The pattern is formed so as to overlap the first transmissive region in the radial direction of the transfer roll, have a second transmissive region as part of the transmissive region, and the second transmissive region is wound around the first member. a second member secured to the first member;
8. The pattern transfer device according to any one of claims 2 and 5 to 7 , comprising:

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