JP3039083U - Conveyor roll with wrinkle prevention and meandering correction roll - Google Patents

Abstract

(57) Abstract: A web (W) for metal foil (W) is provided in the vicinity of a carry-out port (14) of a heat treatment apparatus (A) and supports the metal foil carried out from the heat treatment apparatus (A) while correcting the meandering. Thus, the problem that the metal foil is wrinkled on the outer peripheral surface (25) of the meandering correction roll (20) that is continuously conveyed is solved. SOLUTION: The diameter of the roll gradually increases from the axial center part (22) toward both end parts (24), and the contour line (26) of the roll outer peripheral surface (25) has a serpentine correction in a front view arc shape. Used as a roll (20).

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a wrinkle-preventing conveyance roll and a meandering correction roll, and more particularly to a conveyance roll and a meandering correction roll capable of preventing wrinkles from entering a web carried out from a heat treatment apparatus.

The “web transfer roll” referred to here is a web transfer roll for supporting and continuously transferring the web carried out from the heat treatment apparatus, for example, a guide roll or a meandering correction roll. This is a concept including (orbit correction roll).

[0003]

[Problems to be solved by conventional technology and device]

 It is well known that when a web is washed or a chemical solution is applied to the surface, a heat treatment is performed as a post-process to dry the web.

That is, a means for running the web to be processed is provided inside the housing, and the web is passed through a heat treatment apparatus provided with a heater or a hot air jet nozzle near the web running path.

While passing through the inside of the heat treatment apparatus, the web receives heat and is heat-treated. However, when the web is carried out of the heat treatment apparatus and reaches the first roll, for example, the meandering correction roll, the outer circumference of the roll is changed. The problem of wrinkling on the surface often occurred. This was remarkable when the web was a thin film such as a metal foil or a resin film.

Causes of wrinkles on the web include, for example, the following reasons. That is, the metal foil carried out from the drying furnace after being subjected to heat treatment in the drying furnace shrinks due to temperature change. In this state, when a uniform (constant) tension is applied to the outer peripheral surface of the roll in the width direction when passing through the meandering correction roll, a difference in height occurs in the tension, and wrinkles are likely to form in a place where the tension is low. Become.

As described in Japanese Patent Application Laid-Open No. 8-26553, there is proposed a transport roll in which both ends in the axial direction are formed so that the diameter increases toward the end. As a result, the peripheral speed at both ends becomes faster as it goes outward in the axial direction.Therefore, the belt on the outer peripheral surface of the roll is subjected to tension in opposite directions due to the difference in peripheral speed. By doing so, it is expected that the belt can be always held in a flattened state and conveyed, and it can be expected that formation of wrinkles on the outer peripheral surface of the roll can be prevented.

However, in the above-mentioned transport roll, only the both ends are large in diameter, and the region of the central portion in the axial direction excluding this is formed with the same diameter. A difference in height occurred in tension, and wrinkle formation also occurred.

[Object of the Invention] The present invention has been made in view of the above circumstances, and an object thereof is to provide a transport roll and a meandering correction roll that can solve the problem of wrinkles.

[0010]

[Means for Solving the Problems]

 The transport roll according to claim 1 is a transport roll that is provided in the vicinity of a carry-out port of a web heat treatment apparatus and that continuously transports a web carried out from the heat treatment apparatus, the roll being a central portion in the axial direction to both end portions. The diameter gradually increases as they move toward.

The transport roll according to claim 2 is a transport roll that is provided in the vicinity of the carry-out port of the web heat treatment apparatus, supports the web carried out from the heat treatment apparatus, and continuously transports the web. The diameter gradually increases from the end to both ends, and the contour line of the outer peripheral surface of the roll is arcuate in a front view.

The transport roll according to claim 3 is a transport roll that is provided in the vicinity of a carry-out port of a web heat treatment apparatus for metal foil, and supports and continuously transports the metal foil web carried out from the heat treatment apparatus. That is, the diameter gradually increases from the central part in the axial direction toward both ends, and the contour line of the outer peripheral surface of the roll has an arc shape in a front view.

The meandering correction roll according to claim 4 is a meandering correction roll which is provided in the vicinity of the carry-out port of the web heat treatment apparatus and which supports and continuously conveys the web carried out from the heat treatment apparatus while correcting the meandering. The diameter gradually increases from the axial center toward both ends, and the contour line of the outer peripheral surface of the roll is arcuate in a front view.

The meandering correction roll according to claim 5 is provided in the vicinity of a carry-out port of a web heat treatment apparatus for metal foils, and supports and continuously conveys the metal foil web carried out from the heat treatment apparatus while correcting the meandering. The roll is a meandering correction roll that gradually increases in diameter from the axial center toward both ends, and the contour line of the roll outer peripheral surface is arcuate in a front view.

[0015]

[Embodiment of the invention]

[0016]

[Action]

 In the roll according to claim 1, since the diameter gradually increases from the axial center toward both ends, the tension of the web on the outer peripheral surface is uniform in the width direction. Become. This is for the following reason. That is, as described above, the roll of the present invention is formed such that the diameter gradually increases from the central portion in the axial direction of the roll toward the end side, so that the outer peripheral surface of the roll is axially outward. The peripheral speed becomes faster. As a result, tension is applied to the web on the outer peripheral surface of the roll in the axial direction and the outward direction due to the difference in peripheral speed, and both ears (both ends) of the web are pulled in directions opposite to each other. Therefore, the tension of the web placed on the outer peripheral surface becomes uniform in the width direction, and the web can be conveyed while maintaining the stretched state. As a result, there is no difference in height between tensions, and wrinkles can be suppressed. In the section of the conventional technique, a roll having a large diameter only at both ends in the axial direction is mentioned. Even with this roll, similar to the above, the tension of the web on the outer peripheral surface of the roll can be equalized in the width direction, and the web can be conveyed while maintaining the stretched state to some extent. Since the roll of the present invention is formed so that the diameter gradually increases in the entire region from the central portion to the end portion in the axial direction, the above-mentioned effects are remarkably exhibited.

When the contour line of the roll outer peripheral surface has an arcuate shape when viewed from the front as in the rolls according to claims 2 to 5, the tension of the web on the outer peripheral surface of the roll is more uniform in the width direction. Therefore, the occurrence of wrinkles can be significantly suppressed.

[0018]

【Example】

 One embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows a heat treatment apparatus (A) such as a hot air jet type drying apparatus. As shown in the figure, a copper foil or an aluminum foil as a web (W) is loaded into the heat treatment apparatus (A) via the loading-side guide roller (10). Inside the heat treatment apparatus (A), the nozzles of the hot air jet duct (12) are arranged so as to face the web running path, and the loaded web (W) is heat treated by the hot air blown from the nozzles. To be done. Then, the processed web (W) is carried out from the carry-out port (14) of the heat treatment apparatus (A).

The web (W) carried out from the heat treatment apparatus (A) runs toward the meandering correction roll (20) arranged in the vicinity of the carry-out port (14). The web (W) is constantly or periodically checked for movement by a meandering detection device (not shown), and if the meandering detection device determines that the web (W) is meandering, the web (W) is meandering. The correction command signal is output, and the meandering correction roll (20) which receives the correction command signal operates accordingly and adjusts the traveling of the web (W).

The meandering correction roll (20) is shown in FIG. 2 (in which the degree of constriction of the central portion in the axial direction is exaggerated for clarity of the features of the present invention), as shown in FIG. The diameter gradually increases from 22) toward both ends (24), and the outer peripheral surface is curved. In other words, the meandering correction roll (20) has a diameter that gradually increases from the central portion (22) in the axial direction toward both end portions (24). The contour line (26) of (25) has an arc shape.

The specific dimensions will be described below. That is, when processing a copper foil having a thickness of 12 μm and a width of 1100 mm or an aluminum foil having a thickness of 19 μm and a width of 1100 mm, the roll total length L in FIG. 2 is 1400 mm, the roll end diameter M is 123 mm, and the axial center part ( A roll having a radius difference S between the end portion (24) and the end portion (24) of 0.05 mm and an outline (26) of the roll outer peripheral surface (25) viewed from the front in an arc shape is used. When processing a copper foil having a thickness of 10 μm and a width of 500 mm, or an aluminum foil having a thickness of 20 μm and a width of 476 mm, the roll total length L in FIG. 2 is 600 mm, the roll end diameter M is 137 mm, and the center in the axial direction. A roll having a radius difference S between the portion (22) and the end portion (24) of 0.03 mm and a contour line (26) of the roll outer peripheral surface (25) viewed from the front in an arc shape is used.

In the above web transfer roll, the diameter gradually increases from the central portion (22) in the axial direction toward both end portions (24), and the outer peripheral surface (25) is curved as described above. When it is, the tension of the web (W) placed on the outer peripheral surface (25) of the roll becomes uniform in the width direction, so that the occurrence of wrinkles can be significantly suppressed.

[0024]

[Effect of the invention]

 By using the transfer roll or the meandering correction roll of the present invention, the problem of wrinkles on the web such as metal foil carried out from the heat treatment apparatus is solved.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing an embodiment of a heat treatment apparatus.

FIG. 2 is a front view of the web meandering correction roll of the present invention. In addition, in order to clarify the features of the present invention, the degree of constriction at the central portion in the axial direction is exaggerated.

[Explanation of symbols]

 A: Heat treatment device W: Web 14: Outgoing port (of heat treatment device) 20: Meandering correction roll 22: Central part of axial direction of roll 24: End of roll 25: Outer periphery of roll Surface 26 ... Contour line (of the roll outer peripheral surface)

Claims (5)

[Utility model registration claims] 1. A transport roll, which is provided near a carry-out port of a web heat treatment apparatus and supports and continuously transports a web carried out from the heat treatment apparatus. Conveyor roll with wrinkle prevention processing characterized by gradually increasing its diameter. 2. A transport roll provided near a carry-out port of a web heat treatment apparatus for continuously transporting a web carried out from the heat treatment apparatus, the rolls each extending from a central portion in an axial direction toward both end portions. A transport roll having a gradually increasing diameter and a contour line of an outer peripheral surface of the roll having an arc shape in a front view. 3. A transport roll which is provided in the vicinity of a carry-out port of a web heat treatment apparatus for metal foils and which supports and continuously transports the metal foil web carried out from the heat treatment apparatus, the roll being a central portion in an axial direction. A conveying roll characterized in that the diameter gradually increases toward both ends, and the contour line of the outer peripheral surface of the roll is arcuate in a front view. 4. A meandering correction roll, which is provided in the vicinity of a carry-out port of a web heat treatment apparatus and supports and continuously conveys a web carried out from the heat treatment apparatus while continuously transporting the web, wherein both ends from a central portion in an axial direction. The meandering correction roll is characterized in that the diameter gradually increases toward the portion, and the contour line of the outer peripheral surface of the roll has an arc shape in a front view. 5. A meandering correction roll, which is provided in the vicinity of a carry-out port of a web heat treatment apparatus for metal foil, and which supports and continuously conveys a metal foil web carried out from the heat treatment apparatus while correcting the meandering of the web. A meandering correction roll characterized in that the diameter gradually increases from the axial center toward both ends, and the contour line of the roll outer peripheral surface is arcuate in a front view.