Web processor

Abstract

To make a web processing machine compact.SOLUTION: A web processing machine 10, such as a slitter and a rewinder, is provided with a winding adjustment roller 36 in a winding part 20. The winding adjustment roller 36 is disposed so as to be located close to or in contact with a processed roll 16 formed by winding the web 12 and the web 12 heading to the processed roll 16 is wound around the winding adjustment roller 36. The winding adjustment roller 36 is configured to move linearly in a vertical direction and moves according to change in a wound diameter of the processed roll 16 to adjust a volume of air rolled into the processed roll 16.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] This invention relates to a web processing machine capable of winding a web to form a roll.

Background Art

[0002] A winding device for winding a web to form a roll restricts the air drawn into the roll by a proximity roller disposed immediately before the roll or a contact roller installed to contact the roll, preventing slip and shape distortion (see, for example, Patent Document 1). The device of Patent Document 1 has a proximity roller (contact roller) provided at the lower end of a swing arm that is pivotally supported at the upper end and hangs down, and swings the swing arm by an air cylinder connected to the swing arm, so that as the winding diameter of the roll increases, the proximity roller (contact roller) is swing-moved away from the roll.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The device of Patent Document 1 requires a space for the swing arm that supports the proximity roller (contact roller) to swing in the front-rear direction, a space for installing the air cylinder that moves the swing arm, and so on. Thus, the mechanism related to the proximity roller (contact roller) takes up space, leading to an increase in the size of the device itself.

[0005] In view of the above problems in the prior art, the present invention has been proposed to preferably solve these problems, and an object thereof is to provide a compact web processing machine.

Means for Solving the Problems

[0006] In order to overcome the above problems and achieve the intended purpose, the web processing machine according to claim 1 of the present application is provided with an adjustment roller which is arranged so as to be close to or in contact with a roll around which a web is wound, and around which the web heading towards the roll is wound The gist is that the adjustment roller is configured to linearly move in the vertical direction. According to the invention according to claim 1, by configuring the adjustment roller to linearly move vertically, the mechanism for supporting the adjustment roller and the space for the mechanism to move can be reduced. Thereby, the web processing machine can be made compact.

[0007] In the invention according to claim 2, the gist is that the adjustment roller is arranged at a position shifted inward of the web processing machine with respect to the immediately preceding main body roller on the upstream side in the web flow direction. According to the invention according to claim 2, since the adjustment roller is configured to linearly move vertically, the position of the adjustment roller in the inside-outside direction of the web processing machine does not change with respect to the immediately preceding main body roller, and it is easy to secure the winding angle of the web with respect to the adjustment roller.

[0008] In the invention according to claim 3, a pair of frames for supporting the adjustment roller, a rotating shaft supported by the pair of frames and rotated by a driving means, a pair of pinions provided apart from the rotating shaft, and a rack provided corresponding to each of the pair of pinions and meshing with the pinion. The gist is that it is provided with these. According to the invention according to claim 3, the adjustment roller can be stably linearly moved in the vertical direction by a pair of rack and pinion mechanisms.

[0009] In the invention according to claim 4, a touch roller in contact with the roll is provided on a frame that supports the adjustment roller so as to be swingable with respect to the frame so as to be close to the roll. The gist is that the adjustment roller and the touch roller are unitized. According to the invention according to claim 4, by unitizing the adjustment roller and the touch roller, the number of components can be reduced, and the mechanism for supporting the touch roller can be miniaturized.

Effect of the Invention

[0010] According to the web processing machine according to the present invention, it can be made compact.

Brief Description of the Drawings

[0011]

Figure 1

Figure 2

Figure 3

Figure 4

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Figure 10

Mode for Carrying Out the Invention

[0012] Next, the web processing machine according to the present invention will be described below with reference to the accompanying drawings by giving preferred embodiments.

[0013] Examples of web processing machines that perform predetermined processing on a web include a slitter that cuts the web to a required width and winds it into a roll, and a rewinder that winds up the web once wound in a processing line, performs processing such as finishing, secondary processing, and inspection, and then winds it up again. In the following embodiments, a rewinder will be exemplified and described. Examples of the web include a film made of synthetic resin, paper, a metal foil such as aluminum, etc. A roll-shaped object obtained by winding the web around a core is called a roll. When particularly distinguishing, a roll before the web is fed out and processed is called a "raw roll", and a roll formed by winding up the web after predetermined processing is called a "processed roll".

Example

[0014] (Overview of Rewinder) As shown in FIG. 1, a rewinder (web processing machine) 10 according to an embodiment includes a feeding section 18 that supports a raw roll 14, and a winding section 20 that winds up the web 12 fed out from the feeding section 18 to form a processed roll 16. In the rewinder 10, a pass line is configured through which the web 12 travels from the feeding section 18 toward the winding section 20 by a plurality of main body rollers R installed between the feeding section 18 and the winding section 20. The rewinder 10 of the example is provided in the middle of the pass line, and includes a first processing section 22 that performs a predetermined inspection on defects such as printing applied to the web by a camera (not shown), etc., and a second processing section 24 that is provided on the downstream side in the web flow direction from the first processing section 22 in the pass line and performs a predetermined inspection visually. The rewinder 10 of the example is configured to wind up the web 12 fed out from the raw roll 14 supported by the feeding section 18 around the core 13 at the winding section 20 after performing inspections at the first processing section 22 and the second processing section 24 in the middle of the pass line, respectively, to obtain a processed roll 16.

[0015] As shown in FIG. 1, the rewinder 10 is provided with dancer rollers 30 and 32 that form part of the pass line. The rewinder 10 can keep the web 12 at a constant tension regardless of the diameter of the raw roll 14 and / or the processed roll 16, or absorb sudden tension fluctuations in the web 12, by the dancer rollers 30 and 32 reciprocating according to the tension of the web 12.

[0016] As shown in FIG. 1, the rewinder 10 includes a winding adjustment roller (adjustment roller) 36 in the winding section 20 for aligning the web 12 wound around the core 13 held by the winding shaft 26. In the rewinder 10 of the embodiment, the winding adjustment roller 36 forms part of the pass line. Further, the rewinder 10 includes a pay-out adjustment roller (adjustment roller) 40 in the pay-out section 18 for aligning the web 12 drawn from the raw roll 14 held by the pay-out shaft. In the rewinder 10 of the embodiment, the pay-out adjustment roller 40 forms part of the pass line.

[0017] In the following description, in the rewinder 10, the side where the pay-out section 18 is provided is referred to as the front side, and the side where the winding section 20 is provided is referred to as the rear side, to denote the front-rear direction. Accordingly, in the embodiment, the front side where an operator accesses the pay-out section 18 in the pay-out section 18 is the front surface of the rewinder 10, and the front side where an operator accesses the winding section 20 in the winding section 20 is the rear surface of the rewinder 10. Also, in the rewinder 10, the horizontal direction intersecting the front-rear direction is referred to as the left-right direction, and the raw roll 14 and the processed roll 16 are supported such that the left-right direction is the axial direction of the core 13, and the width direction of the web 12 is the left-right direction. Then, the running direction of the web 12 from the pay-out section 18 through the pass line toward the winding section 20 is referred to as the flow direction of the web 12. As shown in FIG. 1, the flow direction of the web 12 changes direction guided by the main body roller R, the adjustment rollers 36 and 40, the dancer rollers 30 and 32, etc.

[0018] (Dancer roller) Referring mainly to FIGS. 3 to 6, the dancer rollers 30 and 32 will be described.

[0019] As shown in FIG. 1, the rewinder 10 of the embodiment includes a first dancer roller 30 provided between the pay-out section 18 and the first processing section 22. The first dancer roller 30 is configured to be linearly reciprocally movable and adjusts the tension of the web 12 drawn from the raw roll 14 held by the pay-out section 18. Here, the first dancer roller 30 of the embodiment is configured to linearly reciprocate in the front-rear direction. Further, the rewinder 10 of the embodiment includes a second dancer roller 32 provided between the second processing section 24 and the winding section 20. The second dancer roller 32 is configured to be linearly reciprocally movable and adjusts the tension of the web 12 heading toward the processed roll 16 held by the winding section 20. Here, the second dancer roller 32 of the embodiment is configured to linearly reciprocate in the front-rear direction. The first dancer roller 30 and the second dancer roller 32 provided on the downstream side in the flow direction of the first dancer roller 30 are independently reciprocally movable. In the embodiment, the first dancer roller 30 and the second dancer roller 32 are configured as one dancer roller unit 28.

[0020] As shown in FIG. 3, the first dancer roller 30 is rotatably supported between a pair of first support frames (first frames) 42, 42 arranged apart from each other left and right. Further, the second dancer roller 32 is rotatably supported between a pair of second support frames (second frames) 44, 44 arranged apart from each other left and right (see FIGS. 3 and 4). Each of the left and right first support frames 42, 42 is reciprocally movably supported by a rod-shaped support portion 46 attached to the main body frame F. Similarly, each of the left and right second support frames 44, 44 is reciprocally movably supported by a rod-shaped support portion 46 attached to the main body frame F. In this way, the second dancer roller 32 is reciprocally movably supported by the left and right support portions 46, 46 that reciprocally movably support the first dancer roller 30 (see FIGS. 3 and 5).

[0021] As shown in FIG. 3, a first pinion 48 is provided on each of the left and right first support frames 42, 42, and the left and right first pinions 48, 48 are connected by a first coupling shaft. Further, a second pinion 52 is provided on each of the left and right second support frames 44, 44, and the left and right second pinions 52, 52 are connected by a second coupling shaft 54 (see FIGS. 3 and 4). The first pinion 48 and the second pinion 52 are engaged with a rack 56 attached to the main body frame F. In this way, the first dancer roller 30 is configured such that the left and right first pinions 48, 48 are engaged with the left and right racks 56, 56 and reciprocate while maintaining a parallel state. Similarly, the second dancer roller 32 is configured such that the left and right second pinions 52, 52 are engaged with the left and right racks 56, 56 and reciprocate while maintaining a parallel state.

[0022] As shown in FIG. 3, the reciprocating movement of the first dancer roller 30 is controlled by a first cylinder 58 as driving means connected to the first coupling shaft 50. The first dancer roller 30 can stretch the web 12 the more it is positioned relatively rearward (toward the take-up portion 20 side), and conversely, can loosen the web 12 the more it is positioned relatively forward (toward the pay-out portion 18 side) (see FIG. 6). Further, the reciprocating movement of the second dancer roller 30 is controlled by a second cylinder 60 as driving means connected to the second coupling shaft 54. The second dancer roller 32 can stretch the web 12 the more it is positioned relatively forward (toward the pay-out portion 18 side), and conversely, can loosen the web 12 the more it is positioned relatively rearward (toward the take-up portion 20 side) (see FIG. 6).

[0023] In this way, by configuring the dancer rollers 30 and 32 to linearly reciprocate, compared with the conventional configuration in which the dancer roller provided at the tip of the arm swings like a pendulum, the space required for the swing of the arm and the space required for the drive part for swinging the arm can be reduced. Therefore, the rewinder 10 can be made compact. Further, when the dancer rollers 30 and 32 are configured to linearly reciprocate, it becomes easier to adjust the tension of the web 12 by the dancer rollers 30 and 32, and for example, even when the web 12 is rapidly accelerated, the dancer rollers 30 and 32 can smoothly follow to prevent the web 12 from running wild. Furthermore, when the movement of the dancer rollers 30 and 32 is controlled by the cylinders 58 and 60, if the dancer rollers 30 and 32 are configured to linearly reciprocate, the control becomes simple, and smooth and precise tension control can be performed on the web 12.

[0024] The rewinder 10 includes a first dancer roller 30 and a second dancer roller 32 provided on the downstream side in the flow direction of the first dancer roller 30. Since the first dancer roller 30 and the second dancer roller 32 can reciprocate independently of each other, smooth and precise tension control can be performed on the web 12. In the rewinder 10 of the embodiment, the web 12 fed out from the raw roll 14 of the unwinding section 18 can be moderately tensioned by the first dancer roller 30 before reaching the processing sections 22 and 24, making it easier to perform processes such as inspection in the processing sections 22 and 24. Also, in the rewinder 10, the web 12 that has completed the processing in the processing sections 22 and 24 can be moderately tensioned by the second dancer roller 32 before reaching the winding section 20, contributing to neat winding of the web 12 in the winding section 20. In particular, since the first dancer roller 30 and the second dancer roller 32 are arranged side by side horizontally (in the reciprocating movement direction), the apparatus can be made compact.

[0025] As described above, by configuring the first dancer roller 30 and the second dancer roller 32 to be supported by a common support portion 46, the number of components can be reduced and the space required for the dancer roller unit 28 can be made more compact.

[0026] A first pinion 48 provided on a first support frame 42 that supports the first dancer roller 30 and a second pinion 52 provided on a second support frame 44 that supports the second dancer roller 32 are engaged with a common rack 56. By adopting such a configuration, the number of components can be reduced and the space required for the dancer roller unit 28 can be made more compact.

[0027] (Adjusting roller) Next, with reference mainly to FIGS. 7 to 10, a winding adjustment roller 36 for aligning the processed roll 16 will be described by restricting the amount of air drawn in when the web 12 is wound in the winding unit 20. The adjusting roller 36 of the embodiment is arranged near the processed roll 16 (core 13) so as not to contact the web 12 wound around the processed roll 16, and guides the web 12 immediately before the processed roll 16 (core 13), and is also called a proximity roller or a near roller.

[0028] As shown in FIG. 2, the winding adjustment roller 36 is provided in a winding unit 20 that winds the web 12 around a core 13 supported by a winding shaft 26 to form a processed roll 16. The winding adjustment roller 36 is configured to linearly move in the vertical direction (see FIG. 1). The winding adjustment roller 36 is disposed at a position shifted inward (front side) of the web processing machine 10 from the core 13 directly above or on the upper side of the core 13 supported by the winding shaft 26 (Example) (see FIG. 10). The winding adjustment roller 36 in the example linearly moves upward from a lower position close to the core 13 supported by the winding shaft 26 (see FIG. 10(b)) as the web 12 is wound around the core 13 and the winding diameter of the processed roll 16 increases (see FIG. 10(a)). Note that the movement of the winding adjustment roller 36 is controlled based on calculations of the winding diameter and detection of the winding diameter by a sensor (not shown).

[0029] As shown in FIGS. 7 to 9, the winding adjustment roller 36 is disposed between a pair of unit frames 62, 62 arranged apart in the left-right direction and is rotatable about an axis extending in the left-right direction. The left and right unit frames 62, 62 are respectively supported by a pair of unit stays 64, 64 arranged apart in the left-right direction and extending in the vertical direction. Further, a rotating shaft 68 rotated by a motor 66 as driving means is bridged between the left and right unit frames 62, 62. A pair of unit pinions 70, 70 arranged apart in the left-right direction are provided on the outer sides in the left-right direction of each unit frame 62 along the rotating shaft 68. Each unit pinion 70 meshes with a pair of unit racks 72 arranged apart in the left-right direction and extending in the vertical direction. When the rotating shaft 68 is rotated by the motor 66, the left and right unit frames 62, 62 move synchronously in the vertical direction along the unit stays 64 due to the meshing between the rotating unit pinions 70 and the unit racks 72. In this way, the winding adjustment roller 36 can linearly move in the vertical direction while maintaining horizontal by means of a left-right rack and pinion mechanism.

[0030] As shown in FIGS. 7 to 10, winding touch rollers (touch rollers) 74 that contact the processed roll 16 are provided on the left and right unit frames 62, 62 that support the winding adjustment roller 36. In the embodiment, the winding adjustment roller 36 and the winding touch roller 74 are configured as one winding roller unit 34. More specifically, the winding touch roller 74 is rotatably supported at one end of left and right roller arms 76, 76 that rotatably support the winding touch roller 74. The other ends of the roller arms 76, 76 are supported by a roller stay 76 installed between the left and right unit frames 62, 62. The winding touch roller 74 is configured to be swingable about the roller stay 76 as a rotation center. Note that the winding touch roller 74 can control its swinging posture by rotating the roller stay 76 with an actuator 80.

[0031] As shown in FIG. 10, the winding touch roller 74 is arranged on the front side (rear side) of the winding adjustment roller 36. Further, the winding touch roller 74 is arranged at a position (embodiment) shifted to the front side (rear side) of the web processor 10 from the winding core 13 directly above or on the upper side of the winding core 13 supported by the winding shaft 26. In the embodiment, the winding adjustment roller 36 is arranged on the back side of the winding core 13, and the winding touch roller 74 is arranged on the front side of the winding core 13. Also, the winding touch roller 74 in the embodiment is set to be narrower in width than the winding adjustment roller 36.

[0032] As shown in FIG. 10, the winding roller unit 34 drives and controls the motor 66 in response to an increase in the winding diameter of the processed roll 16, so that the winding adjustment roller 36 rises linearly and the winding touch roller 74 rises. At this time, the winding touch roller 74 swings so as to be displaced to the front side of the winding unit 20 in response to an increase in the winding diameter of the processed roll 16. In this way, the winding touch roller 74 contacts a portion closer to directly above the winding core 13 in the processed roll 16 as the winding diameter of the processed roll 16 becomes smaller, and contacts a portion farther from directly above the winding core 13 in the processed roll 16 as the winding diameter of the processed roll 16 becomes larger.

[0033] As shown in FIG. 1, the rewinder 10 of the embodiment includes a pay-out roller unit 38 having a pay-out adjustment roller 40 and a pay-out touch roller 82 in a pay-out section 20. The pay-out roller unit 38 drives and controls a motor 66 according to a decrease in the winding diameter of the raw roll 14, so that the pay-out adjustment roller 40 descends linearly and the pay-out touch roller 82 descends. At this time, the pay-out touch roller 82 swings so as to be displaced toward the front side of the pay-out section 18 according to a decrease in the winding diameter of the raw roll 14. Note that the relationship between the pay-out adjustment roller 40 and the pay-out touch roller 82 of the pay-out roller unit 38 is symmetrical with the relationship between the take-up adjustment roller 36 and the take-up touch roller 74, and the basic configuration is the same as that of the take-up roller unit 34. Therefore, the pay-out roller unit 38 has the same configuration as the take-up roller unit 34, and the same reference numerals are given to the configuration of the take-up roller unit 34 and the description thereof is omitted.

[0034] By configuring the take-up adjustment roller 36 to linearly move up and down, the rewinder 10 can reduce the space required for the swing of the arm and the space required for the drive part for swinging the arm compared with the conventional configuration in which a proximity roller provided at the tip of the arm swings like a pendulum. Therefore, the rewinder 10 can be made compact.

[0035] When the take-up adjustment roller 36 is configured to linearly reciprocate, it becomes easier to perform processes such as adjusting the air volume of the processed roll 16 by the take-up adjustment roller 36 according to the change in the winding diameter of the processed roll 16. More specifically, when the take-up adjustment roller 36 is configured to linearly reciprocate, it only linearly moves upward according to an increase in the winding diameter of the processed roll 16, and the position in the front-rear direction with respect to the core 13 of the processed roll 16 does not change. That is, the take-up adjustment roller 36 can easily perform precise position control with respect to the processed roll 16. For example, in the conventional configuration in which a proximity roller provided at the tip of the arm swings like a pendulum, when moving away from the processed roll 16 according to an increase in the winding diameter of the processed roll 16, it also moves forward while moving upward, making it difficult to control the position of the proximity roller.

[0036] Since the take-up adjustment roller 36 is configured to linearly move up and down, the position of the take-up adjustment roller 36 in the front-rear (inside and outside the web processor) direction does not change with respect to the immediately preceding main body roller R, making it easier to ensure the winding angle of the web 12 with respect to the take-up adjustment roller 36. Therefore, regardless of whether the take-up adjustment roller 36 is in the upper position or the lower position, in order to maintain the winding angle of the web 12, it is possible to avoid increasing the number of main body rollers R or restricting the arrangement of the main body rollers R. Therefore, for example, the number of main body rollers R can be reduced to make the rewinder 10 more compact.

[0037] When the take-up adjustment roller 36 is used as a touch roller in contact with the processed roll 16, since it is configured to linearly move, compared with the conventional configuration in which the proximity roller provided at the tip of the arm swings like a pendulum, the change in the pressing force against the processed roll 16 can be reduced. In this case, since the processed roll 16 can be pressed with an appropriate force by the take-up adjustment roller 36 to limit the amount of air, a processed roll 16 with the web 12 neatly wound can be obtained.

[0038] Since the take-up roller unit 34 is configured such that a pair of unit frames 62 that support the take-up adjustment roller 36 move up and down by a left-right rack and pinion mechanism, the take-up adjustment roller 36 can be stably moved up and down.

[0039] Since the take-up roller unit 34 supports the take-up adjustment roller 36 and the take-up touch roller 74 with a common unit frame 62 to form a unit, the number of parts can be reduced and the mechanism for supporting the take-up touch roller 74 can be miniaturized.

[0040] In the rewind 10 of the embodiment, the first dancer roller 30 and the second dancer roller 32 are arranged symmetrically in the front-rear direction with the main body roller R disposed at the center in the front-rear direction, and the pay-out roller unit 38 and the take-up roller unit 34 are arranged symmetrically in the front-rear direction. The rewind 10 of the embodiment can change its role to pay out the web 12 from the take-up section 20 and take up the web 12 at the pay-out section 18, and even if the role is changed, the tension adjustment by the dancer rollers 30, 32 and the air volume adjustment by the adjustment rollers 36, 40 can be suitably performed.

[0041] (Modification example) Not limited to the above-described configuration, for example, it may be modified as follows. (1) In the embodiment, the rewind is exemplified and described, but for example, it may be a slitter. (2) In the embodiment, the proximity roller is exemplified and described as the adjustment roller, but for example, it may be a roller arranged to contact the roll. (3) In the embodiment, an example of providing one adjustment roller in the take-up section is described, but for example, when the web is distributed and taken up in a plurality of stages such as upper and lower two stages, adjustment rollers may be provided corresponding to each stage.

Explanation of reference numerals

[0042] 10 Rewinder (web processing machine), 12 Web, 16 Processed roll (roll), 36 Take-up adjustment roller (adjustment roller), 62 Unit frame (frame), 66 Motor (driving means), 68 Rotation shaft, 70 Unit pinion (pinion), 72 Unit rack (rack), 74 Take-up touch roller (touch roller), R Main body roller

Claims

1. A web processing machine comprising a pay-out section provided on the front side of the web processing machine for supporting a raw material roll, and a take-up section provided on the rear side of the web processing machine for taking up the web fed from the raw material roll of the pay-out section to form a processed roll, wherein the take-up section includes an adjustment roller disposed close to the processed roll formed by winding the web and around which the web heading toward the processed roll is wound, a pair of frames for supporting the adjustment roller, a touch roller provided swingably with respect to the frame for supporting the adjustment roller so as to be close to the processed roll and contacting the processed roll, a rotating shaft supported by the pair of frames and rotated by a driving means, a pair of pinions provided spaced apart from the rotating shaft, and racks provided corresponding to the pair of pinions and meshing with the pinions, wherein the adjustment roller is disposed in a space below the immediately preceding body roller among the body rollers provided at a location different from the frame and upstream of the adjustment roller in the web flow direction, and is disposed at a position shifted forward from the rotating shaft of the immediately preceding body roller, the adjustment roller is configured to linearly move in the vertical direction, and the adjustment roller and the touch roller are unitized. A web processing machine characterized by the above.

2. The web processing machine according to claim 1, wherein the adjustment roller is disposed in a space below the immediately preceding body roller within a range overlapping the front-rear width of the immediately preceding body roller.

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