JP-2026075736-A - Sheet conveying device and method for adjusting the sheet conveying device

JP2026075736AJP 2026075736 AJP2026075736 AJP 2026075736AJP-2026075736-A

Abstract

[Problem] To make it less likely for the sheet to come into contact with the turning section where the sheet rotates. [Solution] The sheet conveying device 10 includes a first conveying section 20 in which a strip-shaped sheet 1 having a first surface 1A and a second surface 1B which is the back surface of the first surface 1A is conveyed with the first surface 1A facing downwards; a turn section 30 provided downstream of the first conveying section 20 in the conveying direction of the sheet 1 and having a convex curved surface 31 whose axis extends in the width direction of the sheet 1, and which rotates the sheet 1 along the convex curved surface 31 with the first surface 1A facing inwards; a second conveying section 40 provided downstream of the turn section 30 in the conveying direction and in which the sheet 1 is conveyed with the second surface 1B facing downwards; and an injection device 50 provided at the boundary between the first conveying section 20 and the turn section 30 and having an air nozzle 51 extending in the width direction of the sheet 1, which injects air from the air nozzle 51. The width of the air nozzle 51 is configured to be adjustable in the conveying direction. [Selection Diagram] Figure 1

Inventors

堀将之
三上正晃

Assignees

プライムプラネットエナジー＆ソリューションズ株式会社

Dates

Publication Date: 20260511
Application Date: 20241023

Claims (11)

A strip-shaped sheet having a first surface and a second surface which is the back of the first surface is transported with the first surface facing downwards in a first transport unit, The sheet has a convex curved surface whose axis extends in the width direction of the sheet, and is provided downstream of the first conveying section in the conveying direction of the sheet, and rotates the sheet along the convex curved surface with the first surface facing inward, A second conveying section is provided downstream of the turning section in the conveying direction, and the sheet is conveyed with the second surface facing downwards. The device comprises an air nozzle provided at the boundary between the first conveying section and the turning section, extending in the width direction of the sheet, and an injection device that injects air from the air nozzle, The air nozzle is configured to allow adjustment of its width in the conveying direction. Sheet conveying device.
The aforementioned air nozzle is The downstream member that constitutes the downstream side wall portion of the air nozzle, The system includes an upstream member positioned upstream of the downstream member and constituting the upstream wall portion of the air nozzle, At least one of the upstream member and the downstream member is configured to be movable in the transport direction. The sheet conveying device according to claim 1.
The upstream member and the downstream member are each configured to be movable in the transport direction. The sheet conveying device according to claim 2.
The downstream member is configured to move along the convex curved surface in the circumferential direction of the convex curved surface, The injection device includes a flow straightening plate provided on the downstream member, the angle of which changes with respect to the vertical as it moves together with the downstream member, The rectifier plate constitutes a part of the wall surface of the air inlet that communicates with the air nozzle. The sheet conveying device according to claim 3.
The aforementioned convex surface is The small diameter portion facing the center in the width direction of the sheet, It includes a pair of large-diameter portions, which are arranged on both sides of the small-diameter portion in the axial direction and extend radially outward from the small-diameter portion, supporting both ends of the sheet in the width direction, The sheet conveying device according to claim 1.
A position detection device for detecting the difference in radial position between the widthwise ends of the sheet supported by the pair of large-diameter portions and the widthwise center of the sheet, The system further includes an adjustment device that adjusts the width of the air nozzle in the transport direction so that the difference in the radial position detected by the position detection device falls within a predetermined range, The sheet conveying device according to claim 5.
The adjustment device provides feedback control to the width of the air nozzle in the transport direction so that the difference in the radial position detected by the position detection device approaches the predetermined range. The sheet conveying device according to claim 6.
The system further includes a pulling device positioned downstream of the second conveying section in the conveying direction, which pulls the sheet so that a predetermined tension is applied, The aforementioned predetermined range is determined according to the tension applied to the sheet. The sheet conveying device according to claim 6.
A strip-shaped sheet having a first surface and a second surface which is the back of the first surface is transported with the first surface facing downwards in a first transport unit, The sheet has a convex curved surface whose axis extends in the width direction of the sheet, and is provided downstream of the first conveying section in the conveying direction of the sheet, and rotates the sheet along the convex curved surface with the first surface facing inward, A second conveying section is provided downstream of the turning section in the conveying direction, and the sheet is conveyed with the second surface facing downwards. An injection device is provided at the boundary between the first conveying section and the turning section, and includes an air nozzle extending in the width direction of the sheet, which injects air from the air nozzle. A method for adjusting a sheet conveying device equipped with, The aforementioned convex surface is The small diameter portion facing the center in the width direction of the sheet, It includes a pair of large-diameter portions, which are arranged on both sides of the small-diameter portion in the axial direction and extend radially outward from the small-diameter portion, supporting both ends of the sheet in the width direction, The air nozzle is configured to allow adjustment of its width in the conveying direction of the sheet. A measurement step of measuring the difference in radial position between the widthwise ends of the sheet supported by the pair of large-diameter portions and the widthwise center of the sheet, The adjustment step includes adjusting the width of the air nozzle in the conveying direction so that the difference in the radial position measured in the measurement step falls within a predetermined range. A method for adjusting a sheet conveying device.
The sheet conveying device further includes a pulling device located downstream of the second conveying section for pulling the sheet, The aforementioned predetermined range is determined according to the tension applied to the sheet. A method for adjusting a sheet conveying device according to claim 9.
The injection device includes a flow straightening plate that forms part of the wall surface of the air inlet communicating with the air nozzle, and the angle of the flow straightening plate is configured to be adjustable. The adjustment step includes adjusting the angle of the rectifier plate so that the difference in the radial position measured in the measurement step falls within a predetermined range. A method for adjusting a sheet conveying device according to claim 9.

Description

This invention relates to a sheet conveying device and a method for adjusting a sheet conveying device. For example, Patent Document 1 discloses a drying apparatus for drying a coated metal foil strip while transporting it. In the drying apparatus described in Patent Document 1, the transport path is folded twice in the vertical direction, and the transport path is configured in three stages. A semi-cylindrical air turn bar is provided at the folding section from the second to the third stage. In the air turn bar, the metal foil is transported along the outer circumference of the semi-cylindrical air turn bar with the coated material side facing inward. The air turn bar has a mesh wall from which air is blown. According to Patent Document 1, the air blown from the air turn bar lifts the metal foil away from it, allowing it to be transported while maintaining a predetermined gap between the air turn bar and the foil. The air turn bar allows for non-contact folding of the metal foil. Japanese Patent Publication No. 2023-003004 This is a schematic cross-sectional view of a sheet conveying device.This is a perspective view of the turning section.This is a schematic front view of the turning section.This is a block diagram of a sheet conveying device.This is a flowchart related to controlling the width of the air nozzle.This is a flowchart relating to the control of the air nozzle width and the angle of the rectifier plate.This graph shows the relationship between the amount of levitation of the electrode sheet, the tension applied to the electrode sheet, and whether or not wrinkles occur in the electrode sheet. The following describes one embodiment of the sheet conveying device. It should be noted that the embodiment described here is not intended to limit the present invention. Furthermore, the figures are schematic diagrams and do not necessarily faithfully reflect actual implementations. In the following, components and parts that perform the same function are denoted by the same reference numerals, and redundant explanations are omitted or simplified as appropriate. [Configuration of the sheet conveying device] Figure 1 is a schematic cross-sectional view of the sheet conveying device 10. The sheet conveying device 10 is a device for conveying electrode sheets 1 of an energy storage device. In this specification, "energy storage device" is a term that refers to all devices from which electrical energy can be extracted, and includes primary batteries and secondary batteries, as well as chemical batteries such as lithium-ion secondary batteries and nickel-metal hydride batteries, and physical batteries such as electric double-layer capacitors. As shown in Figure 1, the sheet conveying device 10 is configured to turn the electrode sheet 1 during transport and change the transport direction. The electrode sheet 1 is formed in a strip shape, with a coating material 3 (paste) containing electrode active material coated on one surface of the electrode foil 2. The electrode sheet 1 has a coated surface 1A where the coating material 3 is applied, and an uncoated surface 1B on the back side of the coated surface 1A. The electrode sheet 1 has a pair of uncoated portions 4A at both ends in the width direction of the coated surface 1A where the coating material 3 is not applied (see Figures 2 and 3; in Figures 2 and 3, the coated surface 1A is the bottom surface of the electrode sheet 1). Hereafter, the area of the coated surface 1A where the coating material 3 is applied will also be called the coated portion 3A. The illustrated part of the sheet conveying device 10 here is used to transport the electrode sheet 1 in a state where the coating material 3 is not yet dry. However, the illustrated portion of the sheet conveying device 10 may be used to convey the electrode sheet 1 after the coating material 3 has been dried. As shown in Figure 1, the sheet conveying device 10 includes a first conveying section 20 on which the electrode sheet 1 is conveyed, a turn section 30 located downstream of the first conveying section 20 in the conveying direction of the electrode sheet 1, a second conveying section 40 located downstream of the turn section 30 in the conveying direction of the electrode sheet 1, an air injection device 50 for injecting air to levitate the electrode sheet 1 in the turn section 30, and a winding device 60 located further downstream of the second conveying section 40 in the conveying direction of the electrode sheet 1. The first conveying section 20 and the second conveying section 40 are located approximately horizontally. In the first conveying section 20, the electrode sheet 1 is conveyed with the coated surface 1A facing downwards. In the turn section 30, the electrode sheet 1 is rotated so that the uncoated surface 1B faces downwards, with the coated surface 1A facing inwards. By rotating the electrode sheet 1, the top and bottom surfaces of the electrode sheet 1 are swapped. In the second transport