JP2023112465A - Attachment device, liquid discharge device, electrode forming device, multilayer separator forming device, and attachment method - Google Patents

Abstract

To allow a small-sized and simple device to accurately install a liquid-adhering member used for printing without liquid adhering to a conveyance surface in borderless printing by which not only a front surface but also a side surface of an electrode substrate is printed.SOLUTION: A device comprises: a tape holding member 106a for holding a tape; a tape mounting member 114 for positioning and attaching a tip of the tape held by the tape holding member 106a; and a tape pressurizing member 109 configured to operate such that the tape, in a state of being attached to the tape mounting member 114 and restrained in a tension state, is peeled from the tape mounting member 114 and is attached to a conveyance surface on which a substrate is conveyed while the conveyance surface is pressurized.SELECTED DRAWING: Figure 6

Description

TECHNICAL FIELD The present invention relates to a sticking device, a liquid ejecting device, an electrode forming device, a multi-layer separator forming device and a sticking method.

Conventionally, electrodes used in electrochemical devices such as power storage devices such as batteries, power generation devices such as fuel cells, and solar power generation devices are prepared by dispersing a powdery active material or a catalyst composition in a liquid. is applied on the electrode substrate, fixed and dried. For the application of the liquid, a spray, dispenser, die coater, pull-up coating, and printing using an inkjet head have been usually used.

Japanese Patent Application Laid-Open No. 2002-200001 discloses a technique of removing the liquid with a liquid removing member by causing the liquid adhering to the conveying surface to fly by electrostatic force during idle discharge after applying the liquid.

However, according to the prior art, when the amount of adhesion is large, as in borderless printing in which not only the surface but also the side surface of the electrode substrate is printed, it is unrealistic to fly the particles by electrostatic force.

The present invention has been made in view of the above, and is a liquid adhesion member used for borderless printing in which not only the surface but also the side surface of an electrode substrate is printed, without causing liquid to adhere to the conveying surface. can be accurately installed with a small and simple device.

In order to solve the above-described problems and achieve the object, the present invention provides a tape holding member that holds a tape, a tape attachment member that positions and affixes the tip of the tape held by the tape holding member, a tape pressurizing member that operates to apply pressure to a conveying surface that conveys a substrate while peeling off the tape attached to the tape attaching member and restrained in a tensioned state from the tape attaching member and attaching the tape to the conveying surface that conveys the substrate; It is characterized by having

According to the present invention, in borderless printing in which not only the surface of an electrode substrate but also the side surface is printed, a liquid adhesion member used for printing without adhering liquid to the conveying surface can be precisely manufactured by a small and simple device. There is an effect that it can be installed well.

FIG. 1 is a schematic diagram of an electrode printing apparatus according to a first embodiment. FIG. 2 is a side view showing an ink removing mechanism provided in the electrode printing device. FIG. 3 is a plan view showing an ink removing mechanism provided in the electrode printing device. FIG. 4 is a front view showing a cross-section of the ink removing mechanism provided in the electrode printing device as seen from the downstream side in the transport direction. FIG. 5 is a diagram showing the positional relationship between the electrode substrate and the liquid adhering member. FIG. 6 is a diagram showing the configuration of a tape sticking device. FIG. 7 is a diagram showing the positional relationship of the main constituent members of the tape applying device. FIG. 8 is a diagram showing the tape leading end restraining process. FIG. 9 is a diagram showing the tape tip cutting process. 10A and 10B are diagrams showing the step of applying pressure to the leading edge of the tape. FIG. 11 is a diagram showing the positional relationship of the trailing edge of the tape when it is pasted all around. FIG. 12 is a diagram showing the tape trailing edge cutting process. 13A and 13B are diagrams showing the step of attaching the tape connecting portion. FIG. 14 is a plan view showing an ink removing mechanism provided in the electrode printing apparatus according to the second embodiment; FIG. 15 is a front view showing a cross-section of the ink removing mechanism provided in the electrode printing device as seen from the downstream side in the transport direction. FIG. 16 is a diagram schematically showing an electrode forming apparatus according to a third embodiment;

Embodiments of a sticking device, a liquid ejecting device, an electrode forming device, a multilayer separator forming device, and a sticking method will be described in detail below with reference to the accompanying drawings.

(First embodiment)
FIG. 1 is a diagram schematically showing an electrode printing device 1 according to the first embodiment.

As shown in FIG. 1, an electrode printing apparatus 1 uses a liquid ink as a functional layer forming ink to print the surface of an electrode substrate as a substrate (hereinafter also referred to as "electrode substrate surface") and the surface of an active material layer. (hereinafter also referred to as "active material layer surface"). In other words, the electrode printing apparatus 1 uses liquid ink to position-selectively form a functional layer on the electrode substrate surface and/or the active material layer surface.

In the present specification and claims, the term "functional layer" means a layer that functions in the manufacture and/or use of an electrochemical device. For example, when an insulating resin layer and/or inorganic layer is provided on the electrode active material, the functional layer functions as an insulating layer.

Further, in the following embodiments, a structure in which the functional layer is provided on the electrode substrate will be described. Alternatively, it may be a multi-layer separator forming apparatus having a multi-layer separator as a substrate, in which a layer different from the separator is provided on the separator.

As shown in FIG. 1, the electrode printing apparatus 1 includes a transport mechanism 3 as a transport section for transporting an electrode substrate 2 as a substrate and/or an electrode having an active material layer on the electrode substrate 2 . Further, the electrode printing apparatus 1 includes an image recognition device 9 , a liquid ejection head 4 , a light source 5 , a heater 6 , and a liquid ejection head in order from the upstream side to the downstream side in the transport direction X of the electrode substrate 2 by the transport mechanism 3 . 7, a light source 5, a heater 6, and the like are arranged.

The electrode substrate 2 is, for example, a current collector which is a metal component for extracting electric power stored in the electrode body inside the battery case to the outside of the battery case. Alternatively, the electrode substrate 2 is, for example, an electrode element having a current collector and an active material layer formed on the current collector.

The electrode substrate 2 is a conductive foil having flatness, and can be suitably used for secondary batteries and capacitors, which are generally electric storage devices, especially lithium ion secondary batteries. Examples of conductive foils include aluminum foil (hereinafter referred to as "aluminum foil"), copper foil, stainless steel foil, titanium foil, and etched foils obtained by etching them with fine holes, and holes used in lithium ion capacitors. A perforated electrode substrate or the like is used.

As the electrode substrate 2, carbon paper fibrous electrodes used in power generating devices such as fuel cells are made into a non-woven or woven flat surface, or the above perforated electrode substrates having fine holes are used. can.

The image recognition device 9 is arranged on the most upstream side in the transport direction X and functions as an information acquisition means for acquiring defect information and position information on the surface of the active material layer formed on the electrode substrate 2 . The image recognition device 9 is composed of, for example, a camera and a line sensor. The image recognition device 9 is used when an active material layer already exists on the electrode substrate 2, and recognizes and records the position of the active material image and the position of the defect on the electrode substrate 2, so it is an essential configuration. not, but provided as needed.

The transport mechanism 3 transports the electrode substrate 2 so that the electrode substrate 2 passes in front of the liquid ejection head 4 , the light source 5 , and the heater 6 in sequence. The conveying mechanism 3 can be composed of, for example, a belt for moving the electrode substrate 2, a combination of an air floating mechanism or rollers, and a drive mechanism including a motor for driving it. Further, the transport mechanism 3 may be further provided with a guide member or the like for assisting the movement of the electrode substrate 2 .

The liquid ejection head 4 functions as a liquid ejection head for forming an ink layer that ejects a liquid ink (liquid composition), which is an ink for forming a resin layer and/or an inorganic layer, onto the electrode substrate 2 to form an ink layer. . The liquid ejection head 4 deposits liquid ink on the electrode substrate 2 in accordance with image signals relating to information for forming a frame pattern as an ink layer pattern to be described later, and defect information acquired by the image recognition device 9 as necessary. to form an ink layer that is a precursor of the resin layer and/or the inorganic layer. As the liquid ejection head 4, heads arranged in a line having a width equal to or greater than the width in the width direction orthogonal to the transport direction X of the electrode substrate 2 can be used. There are no particular restrictions on the pressure generating means and driving method for ejecting the liquid ink from the liquid ejection head 4 . For example, a thermal actuator for ejecting liquid ink droplets using vapor pressure generated by the heat of a heating element, a piezoelectric actuator for ejecting liquid ink droplets using mechanical pressure pulses generated by a piezoelectric element, or An electrostatic actuator or the like comprising a diaphragm and a counter electrode may be used. Furthermore, the liquid ink may be flown by turning on and off the pressure of the liquid ink supply system as necessary.

The light source 5 has a curing function of irradiating the ink layer formed on the electrode substrate 2 with light to cure the ink layer into a resin layer. As the light source 5, for example, mercury lamps such as low, medium and high pressure mercury lamps, tungsten lamps, arc lamps, excimer lamps, excimer lasers, semiconductor lasers, high output UV-LEDs, YAG lasers, lasers and nonlinear optical crystals. , a high-frequency induced ultraviolet ray generator, an electron beam irradiation device such as an EB cure, an X-ray irradiation device, or the like can be used. Among them, it is preferable to use a high-frequency induced ultraviolet ray generator, a high/low pressure mercury lamp, a semiconductor laser, or the like, because the system can be simplified. Further, the light source 5 may be provided with a condensing mirror or a sweeping optical system.

The heater 6 serves as curing/drying means or heating means/heating mechanism for heating the ink layer formed by ejecting the ink for forming the inorganic layer formed on the electrode substrate 2 to promote curing or drying. has the function of As the heater 6, for example, an infrared lamp, a roller (heat roller) containing a heating element, a blower for blowing out warm or hot air, a boiler-type furnace using water vapor or the like into which hot air is introduced, or the like can be used.

The liquid ejection head 7 functions as coating means for further coating an active material as necessary when forming an active material layer continuously on the electrode substrate 2 on which a resin layer has been previously provided. Instead of the liquid ejection head 7, a die head having an intermittent function, a high-speed dispenser, a jet nozzle, a spray nozzle, or a liquid ejection head similar to the above may be used to apply the ink for forming the active material layer.

In this case, the liquid ejection head 7 ejects an active material layer-forming ink (liquid composition) containing an active material onto the surface of the electrode substrate 2 to form an active material layer. Acts as a head. The liquid ejection head 7 is provided as appropriate and necessary. Based on the defect information acquired by the image recognition device 9, the ink for forming the resin layer and/or the inorganic layer is applied to the defective portion of the surface of the active material layer. It also functions as an application means for applying the

As described above, the liquid ejection head 7 ejects a liquid ink, which is an ink for forming a resin layer and/or an inorganic layer, onto the electrode substrate 2 to form an ink layer with the same liquid for forming an ink layer as the liquid ejection head 4 . It may function as an ejection head.

The electrode printing apparatus 1 is equipped with a control device for controlling operations of the transport mechanism 3, the image recognition device 9, the liquid ejection head 4, the light source 5, the heater 6, the liquid ejection head 7, the light source 5, the heater 6, and the like. .

Next, the operation of the electrode printing device 1 will be described.

First, the controller of the electrode printing apparatus 1 drives the transport mechanism 3 to transport the electrode substrate 2 in the transport direction X from right to left in FIG. At this time, the transport speed of the electrode substrate 2 is, for example, within the range of 0.1 m/min to several hundred m/min.

When the image recognition device 9 is provided upstream of the electrode printing device 1, the control device of the electrode printing device 1 observes the electrode surface with the image recognition device 9, and includes a camera for recording the position information of the defective portion. A line sensor is used to read the defective portion and its position, and feedback to subsequent liquid ink ejection/printing by the liquid ejection head 4 is performed.

When the electrode substrate 2 is transported to the front of the liquid ejection head 4, the controller of the electrode printing apparatus 1 controls the liquid ejection head 4 in accordance with the image signal to eject the liquid ink. An ink layer is thereby formed on the electrode substrate 2 .

Next, the controller of the electrode printing apparatus 1 conveys the electrode substrate 2 on which the ink layer is formed to the front of the light source 5 . When the electrode substrate 2 passes in front of the light source 5, the controller of the electrode printing apparatus 1 drives the light source 5 to irradiate the ink layer formed on the electrode substrate 2 with light, thereby exposing the ink layer. Harden. The irradiation light intensity at the position of the ink layer surface varies depending on the wavelength of the light source used, etc., but is usually within the range of several mW/cm ² to 1 KW/cm ² . The amount of exposure to the ink layer can be appropriately set according to the sensitivity of the liquid ink, the moving speed of the surface to be printed (the conveying speed of the electrode substrate 2), and the like.

Subsequently, the controller of the electrode printing apparatus 1 conveys the electrode substrate 2 carrying the cured ink layer into or near the heater 6 . When the electrode substrate 2 passes through or near the heater 6, the controller of the electrode printing apparatus 1 drives the heater 6 to heat the ink layer formed on the electrode substrate 2 so that the ink layer contains An insulating layer is formed by drying the solvent. Since the heater 6 requires sufficient heating to remove the solvent in the ink layer, its capacity is determined depending on the speed of the transport mechanism 3 and the boiling point of the solvent. Therefore, the heater 6 normally heats the ink layer so that the maximum temperature reaches a relatively high temperature of about 200° C. or less, preferably about 80° C. to 200° C. or about 60° C. to 180° C., and the drying time is set for the ink layer. Although it depends on the thickness of the film, it is preferable that the heating time is usually about 0.5 to 60 minutes, more preferably 1 to 10 minutes. Moreover, the cross-linking reaction may be accelerated during the main heating. In this case, in the electrode printing apparatus 1 shown in FIG. 1, the heating time by the heater 6 is usually relatively short, approximately several seconds to several tens of seconds. Therefore, when the ink layer is almost completely cured by the heater 6, the highest temperature is, for example, about 200.degree. C. or less, preferably about 80.degree. Heat up to

Subsequently, when the active material layer has not yet been formed on the electrode substrate 2, the control device of the electrode printing apparatus 1 ejects the active material layer forming ink onto the surface of the electrode substrate 2 using the liquid ejection head 7 or the like. to form an active material layer, and the heater 6 dries it. Since the heater 6 requires sufficient heating to remove the solvent in the active material, its capacity is determined depending on the speed of the transport mechanism 3 and the boiling point of the solvent. For this reason, the heater 6 normally heats the active material so that the maximum temperature is about 200° C. or less, preferably about 80° C. to 200° C. or about 60° C. to 180° C., which is relatively high. Although it depends on the thickness of the layer, it is generally preferred to heat for about 0.5 to 60 minutes, more preferably 1 to 10 minutes.

After that, the control device of the electrode printing apparatus 1 winds up the electrode substrate 2 in the case of a strip, or conveys it to a stocker (container for storing thin film electrodes). This completes the electrode printing.

The heating means for heating the ink layer is generally known as a heat source, and any device that can be controlled may be used. When used, heating can be performed simultaneously with light irradiation. In this case, curing can be accelerated, which is more preferable.

When the ink layer is irradiated with light, the ink layer is heated by the heat generated from the light source 5. Therefore, unlike the heater 6, the heating means does not necessarily need to be provided as an independent member. However, it takes a long time to completely cure the ink layer by leaving it at room temperature only with the heat from the light source 5 . Therefore, it is desirable to apply the room temperature standing to applications in which a sufficiently long time can be secured until complete curing. For example, a printed matter such as a newspaper advertisement to be distributed the next day can be completely cured even if it is left at room temperature because the time required for curing can be as long as about one day and night.

Examples of such light sources include Light Hammer Series (manufactured by Fusion UV Systems). In addition, LED manufacturers such as Nichia Corporation sell high-brightness UV-LEDs and laser diodes of 1 W or more, and these can be suitably used by arranging them in a line or on a plane. . In addition, when it is difficult for light to reach due to penetration into the gaps of the active material powder, an electron beam or an X-ray irradiation device can be used as a light source. It is preferably used.

In the electrode printing device 1, which is a device for ejecting liquid ink according to the present embodiment, two or more liquid ejection heads for ejecting different liquid inks (for example, liquid ink layers of both a resin layer and an inorganic layer) are provided. , multi-layer simultaneous printing and mixing of liquid inks at the point of impact.

In the electrode printing apparatus 1 described above, in order to move the electrode substrate 2 relative to the liquid ejection head 4 or 7 or the like, the electrode substrate 2 is formed with a desired thickness of the resin layer and/or the inorganic layer. Although the electrode substrate 2 is moved by providing the transport mechanism 3 for transporting, the liquid ejection head 4 or the like may be moved in the transport direction X as needed. Also, both the electrode substrate 2 and the liquid ejection head 4 or 7 may be moved.

Furthermore, by appropriately using the technique described in the present embodiment, it is possible to perform overprinting and to form a relatively thick resin layer and/or inorganic layer pattern. That is, a resin layer and/or an inorganic layer having a thickness of several tens of μm or more is formed by repeating ejection of the liquid ink in a predetermined region of the electrode substrate and curing of the resulting ink layer a plurality of times. It is also possible to

When the electrode active material layer is formed on the electrode substrate 2 and the liquid ejection head 4 or 7 is used to form a resin layer or an inorganic layer, the control device of the electrode printing device 1 controls the image recognition device 9. By feeding back the defect of the obtained electrode active material layer and changing the concentration, thickness or type of liquid ejected by the liquid ejection head 4 or 7 respectively, the defect of the electrode active material layer can be corrected by the active material, the resin, or the like. A layer, an inorganic layer, and an improvement in patterning the inorganic layer.

The thin-film electrode according to the present embodiment is intended to have a single unit thickness of typically 1 mm or less, more preferably 500 μm or less. Although the lower limit of the thickness is not specified, it is about 1 μm because of the limit of current foil manufacturing technology. By realizing and providing a thin-film electrode having the thickness described above and having the effects described above and below, it is possible to contribute to high performance, light weight, and miniaturization of various devices (especially lithium-ion secondary batteries).

By the way, in the electrode printing apparatus 1, when forming an ink layer or an active material layer on the electrode substrate 2 by ejecting liquid (liquid composition) from the liquid ejection heads 4 and 7, which are ejection portions, the electrode substrate 2 borderless printing in which ink is ejected beyond the edge in the width direction perpendicular to the transport direction X of the paper. Here, borderless printing in this embodiment means printing not only the surface of the electrode substrate 2 but also the side surface of the electrode substrate 2, and is different from borderless printing in which the entire surface is generally printed. When borderless printing is executed in this way, there is a problem that the belts and the like constituting the transport mechanism 3 are stained by the ink ejected to the outside of the electrode substrate 2 .

Therefore, in the electrode printing apparatus 1 according to this embodiment, the ink ejected to the outside of the electrode substrate 2 is removed by the ink removing mechanism. This point will be described below.

2 is a side view showing the ink removing mechanism provided in the electrode printing device 1, FIG. 3 is a plan view showing the ink removing mechanism provided in the electrode printing device 1, and FIG. FIG. 10 is a front view showing a state in which a cross section of the ink removing mechanism that is mounted is viewed from the downstream side in the conveying direction;

As shown in FIGS. 2 to 4, the ink removing mechanism includes a liquid adhering member 11 which is provided on the belt 3a constituting the transport mechanism 3 and adheres the liquid L ejected from the liquid ejection heads 4 and 7; and a liquid removing member 12 which is a removing portion for removing the liquid L on the adhering member 11 .

The liquid adhering member 11 has a long tape shape and is a region on the belt 3a that constitutes the transport mechanism 3, and is parallel to the transport surface of the electrode substrate 2 and perpendicular to the transport direction X. It is provided so as to cover the area around the end (the position where the liquid L is discharged outside the electrode base 2). Therefore, part of the liquid adhering member 11 is sandwiched between the edge of the electrode substrate 2 and the belt 3 a that constitutes the transport mechanism 3 . As a result, the electrode substrate 2 is inclined with respect to the conveying surface of the electrode substrate 2 on the belt 3 a constituting the conveying mechanism 3 .

The liquid adhering member 11 is made of, for example, a non-permeable material. The term “non-permeability” refers to the property that the liquid L does not permeate the inside of the liquid adhering member 11 and the liquid L does not flow to the rear surface of the liquid adhering member 11 . Specifically, the liquid adhering member 11 is made of, for example, synthetic resin such as fluororesin, PTFE (Polytetrafluoroetheylene), PET (Polyethyleneterephthalate) resin, or polyimide film. By forming the liquid adhering member 11 from a non-permeable material in this manner, the liquid L ejected to the outside of the electrode substrate 2 does not permeate the liquid adhering member 11, so that the electrodes of the belt 3a constituting the conveying mechanism 3 are prevented from penetrating the liquid adhering member 11. The conveying surface of the substrate 2 is not soiled.

The liquid adhering member 11 is placed on the belt 3a constituting the transport mechanism 3 by a tape application device 100 (see FIG. 6) provided on the upstream side of the transport mechanism 3 in the transport direction. As described above, the liquid adhering member 11 is installed upstream in the transport direction of the transport mechanism 3, so that the liquid L ejected from the liquid ejection heads 4 and 7 can be deposited downstream of the transport mechanism 3 in the transport direction. can.

By providing the liquid adhering member 11 made of an impermeable material so as to cover one end of the transport surface of the electrode substrate 2 (the position where the liquid L is ejected to the outside of the electrode substrate 2), the liquid Since the liquid L ejected from the ejection heads 4 and 7 to the outside of the electrode substrate 2 adheres to the liquid adhering member 11, the liquid L is ejected to the outside of the electrode substrate 2 onto the conveying surface of the electrode substrate 2 on the belt 3a constituting the conveying mechanism 3. It is possible to prevent the deposited liquid L from adhering.

Further, the liquid removing member 12 is provided in the vicinity of the roller 3b on the downstream side of the electrode substrate 2 in the conveying direction of the belt 3a constituting the conveying mechanism 3. As shown in FIG. The liquid removing member 12 removes the liquid L ejected onto the liquid adhering member 11 by, for example, scraping off the liquid L on the liquid adhering member 11 with a brush and sucking it.

An example has been described in which the tape applying member 100 is provided on the upstream side of the electrode substrate 2 in the conveying direction, and the liquid removing member 12 is provided on the downstream side of the electrode substrate 2 in the conveying direction. On the downstream side in the direction, the liquid removing member 12 may be provided on the upstream side in the transport direction of the electrode substrate 2 , or may be provided on the upstream side in the transport direction or the downstream side in the transport direction of the electrode substrate 2 .

In this way, one end of the belt 3a constituting the transport mechanism 3 in the direction parallel to the transport surface of the electrode substrate 2 and perpendicular to the transport direction X (the position where the liquid L is discharged outside the electrode substrate 2). 3, the liquid L adhering to the liquid adhering member 11 is removed by the liquid removing member 12 so that the liquid L does not remain inside the electrode printing device 1 at least on one side end of the transport surface. and the inside of the electrode printing device 1 can be kept clean.

Next, the positional relationship between the electrode substrate 2 and the liquid adhering member 11 will be described.

Here, FIG. 5 is a diagram showing the positional relationship between the electrode substrate 2 and the liquid adhering member 11. As shown in FIG. Usually, when the gap t between the electrode substrate 2 and the liquid adhesion member 11 is small, the liquid L adhering to the liquid adhesion member 11 is drawn by capillary action, and the liquid adhering to the liquid adhesion member 11 on the back surface of the electrode substrate 2 is drawn. L sticks. When the liquid L adheres to the back surface of the electrode substrate 2 in this manner, the belt 3a and peripheral parts constituting the transport mechanism 3 are soiled.

Therefore, in the present embodiment, the distance between the liquid adhesion member 11 and the uppermost side with respect to the liquid adhesion member 11 among the sides of the surface of the electrode substrate 2 in contact with the liquid adhesion member, that is, the electrode The longest distance among the distances vertically lowered from the edge of the base 2 to the liquid adhering member 11 (gap distance: t in the figure) is 30 μm or more. By doing so, it is possible to prevent the liquid L adhering to the liquid adhering member 11 from flowing to the back surface of the electrode substrate 2 due to capillary action.

Next, a tape sticking device 100, which is a sticking device that sticks the liquid adhering member 11 to the belt 3a, will be described.

Here, FIG. 6 is a diagram showing the configuration of the tape applying device 100, and FIG. FIG. 7(a) is a side view, and FIG. 7(b) is a front view. As shown in FIGS. 6 and 7, the tape applying apparatus 100 holds an adhesive tape roll 200 formed by forming an adhesive tape 200a having an adhesive surface on at least one side thereof into a roll shape.

As shown in FIGS. 6 and 7, the tape applying apparatus 100 includes guide shafts 104a and 104b positioned on a structure holding frame 104, and a slide base 105 configured to be fixable on the guide shafts 104a and 104b. , a base plate 106 fixed to a slide base 105, a tape setting shaft 106a serving as a main tape holding member, a set roll arm shaft 106b, and a tape roll stopper 106c.

The tape applying device 100 is assembled to a base plate 106 fixed to a slide base 105 . The tape applying device 100 is movable in the axial direction of the guide shafts 104a and 104b.

The tape setting shaft 106a can be smoothly rotated by a bearing member or the like having little load resistance in the rotational direction, and the adhesive tape roll 200 is set. The tape roll stopper 106c is a regulating member that regulates the axial direction of the adhesive tape 200a. That is, the tape roll stopper 106c determines the axial edge position of the adhesive tape roll 200 set on the tape setting shaft 106a. By regulating the axial direction of the tape and using a bearing member with low load resistance in the rotational direction, the tape position can be stably maintained and the tape position fixed, preventing slack and twisting. Improves accuracy.

As shown in FIGS. 6 and 7, the tape applying device 100 includes a film set arm 107, stand pins 107a and 107b attached to the film set arm 107, a pressure roller arm 108, and a pressure roller arm 108 integrally formed. It comprises shafts 108a and 108b, a pressure roller 109 which is the main component of the tape pressure member, a pressure handle 110 attached to the film set arm 107, and pressure means 111. As shown in FIG.

The pressing handle 110 is rotatable around a stand pin 107b attached to the film setting arm 107. As shown in FIG. Further, the pressing handle 110 is configured to mesh with a shaft 108b integrally formed with the pressing roller arm 108. As shown in FIG.

The pressing means 111 is provided between the stand pin 107b, which is the center of rotation of the pressing handle 110, and the shaft 108b integrally formed with the pressing roller arm . The pressure means 111 has a function of uniquely determining the position of the pressure roller arm 108 with respect to the film set arm 107, and also constitutes the transport mechanism 3 by rotating the pressure handle 110, which will be described later. It works as a function to press the belt 3a side.

6 and 7, the tape applying apparatus 100 includes a set roll arm 112, a set roll stand 112a provided on the set roll arm 112, and a set roll stand 112a rotatably supported on the set roll stand 112a. tape mounting roller 113, a tape mounting guide 114 serving as the main body of the tape mounting member, and a tape trailing end sticking plate 115. - 特許庁

The tape mounting roller 113 and the tape mounting guide 114 are provided on a set roll arm 112 which is rotatable around a set roll arm shaft 106b.

The tape attachment guide 114 is provided close to a tape attachment roller 113 rotatably supported on a set roll stand 112 a provided on the set roll arm 112 so as to surround a portion of the outer circumference of the tape attachment roller 113 .

As shown in FIG. 7, tape edge eye marks 114a are provided on the tape attachment guide 114 at positions in the depth direction in the drawing that coincide with the axial edge positions of the adhesive tape roll 200. As shown in FIG.

Further, as shown in FIG. 7, the tape attachment guide 114 is provided with a tip cut guide 114b that indicates the cutting position of the tip of the adhesive tape 200a and is perpendicular to the pull-out direction of the adhesive tape 200a. The tip cut guide 114b is formed of a slit or a groove so as to guide the position of the cutting edge of a cutter knife or the like.

That is, by providing a slit or groove parallel to the width direction of the tape in the tape attachment guide 114, which serves as the tape attachment surface, the tip of the adhesive tape 200a can be cut straight, so that the attachment quality of the cut portion can be stabilized. can. In addition, work safety can be improved.

Tape trailing end sticking plate 115 is provided close to belt 3a in the middle of the route of adhesive tape 200a connecting tape setting shaft 106a and tape mounting guide 114 in a non-contact positional relationship. As shown in FIG. 7, on the surface of the tape trailing end sticking plate 115, there is a trailing end cut guide 115a formed of a slit or a groove for guiding the leading end position of a cutter knife or the like, similarly to the leading end cut guide 114b. It is provided perpendicularly to the pull-out direction of the adhesive tape 200a. By providing such a tape rear end affixing plate 115, the work of cutting the rear end of the adhesive tape 200a can be easily performed. In addition, by providing a slit or groove parallel to the width direction of the tape on the tape side surface of the tape trailing edge attaching plate 115, the trailing edge of the adhesive tape 200a can be cut straight, so that the attachment quality of the cut portion is stabilized. can be made In addition, work safety can be improved.

First, the tape leading end restraining process in the tape applying apparatus 100 having such a configuration will be described.

FIG. 8 is a diagram showing the tape leading end restraining process.

First, as shown in FIG. 8, the operator pulls out the adhesive tape roll 200 from the adhesive tape roll 200, which is set on the tape setting shaft 106a by positioning the edge in the axial direction, toward the belt 3a constituting the conveying mechanism 3. As shown in FIG. Next, the operator presses the tip of the adhesive tape 200a that has been pulled out against the tape attaching roller 113 and the tape attaching guide 114 from the non-adhesive surface side to stick it. Since the adhesive tape 200a is under tension due to the peeling force when it is unwound from the roll, the operator should place the pulled-out adhesive tape 200a on the tape attaching roller 113 and the tape attaching guide 114 in a tensioned state without slack. can be pasted on.

Also, the operator sticks the tip of the adhesive tape 200a using the tape edge eye mark 114a (see FIG. 7) indicating the position corresponding to the edge position in the width direction of the adhesive tape 200a. As a result, the operator can prevent the adhesive tape 200a from being kinked from the adhesive tape roll 200, position it straight, and restrain the tip of the adhesive tape 200a, thereby improving the sticking accuracy. be able to.

Further, the operator can stick the adhesive tape 200a to any position on the belt 3a constituting the transport mechanism 3 by moving the slide base 105 on the guide shafts 104a and 104b. That is, regardless of the width size of the electrode substrate 2, the operator can adjust the relative position between the edge of the electrode substrate 2 and the adhesive tape 200a.

Next, the tape tip cutting process in the tape applying device 100 will be described.

FIG. 9 is a diagram showing the tape tip cutting process.

The operator holds the tip of the adhesive tape 200a, which is positioned by constraining the tip in the tape tip restraining process shown in FIG. detach.

The adhesive tape 200a is a thin film and is often made of a material that is easily stretched. When cutting by pressing a blade such as a utility knife, the stretched adhesive tape 200a prevents the cutting position from being fixed and the tape is cut straight. is difficult. Also, if the cut surface of the adhesive tape 200a is curved, there is likely to be a portion that is not in close contact with the base surface to which it is attached (tape attachment roller 113 and tape attachment guide 114), causing lifting after attachment. In addition, when the film is cut and pierced through, the cutting tool is largely exposed, which poses a problem of work safety.

Therefore, in the present embodiment, the adhesive tape 200a is adhered onto the tape set guide 114 to eliminate the stretch of the adhesive tape 200a, and the tip cut guide 114b guides the flow line of the blade to define the cutting position. , It is devised so that the quality of pasting the cut part and safe work can be achieved.

Specifically, as shown in FIG. 9, the operator cuts the leading end of the adhesive tape 200a with a cutter knife or the like along the leading end cut guide 114b, and then cuts the pressing handle 110 attached to the film set arm 107. is rotated counterclockwise (arrow direction A) in the figure. Then, as the pressing handle 110 rotates, the pressing roller 109 rotates together with the pressing roller arm 108 . By doing so, the operator can press the adhesive tape 200a whose tip is restrained in the tense state described in FIG.

In addition, as shown in FIG. 7, the pressure roller 109 is configured to cover the entire width of the adhesive tape 200a in order to enable the adhesive tape 200a to be evenly pressed.

Furthermore, the operator continues to push the push handle 110 . As the path length of the adhesive tape 200a is increased by the pushing operation of the pressing handle 110, the tension of the adhesive tape 200a is increased. When the operator pushes the pressure handle 110, the tape attachment roller 113 rotates toward the pressure roller 109 (clockwise in the drawing), so that the adhesive tape 200a attached to the tape attachment roller 113 is removed from the cut surface. separated.

In this way, since the adhesive tape 200a can be kept in a tensioned state in the tape leading end cutting step, the adhesive tape 200a can be kept in a tensioned state without being displaced. It is possible to remove the tip that may have attached foreign matter that interferes with the

Next, the tape leading end pressure applying process in the tape applying apparatus 100 will be described.

10A and 10B are diagrams showing the step of applying pressure to the leading end of the tape.

Here, the adhesive tape 200a attached to the surface of the tape attachment roller 113 in the tape tip cutting step of FIG. and a step of applying pressure to the surface of 3a.

From the state shown in FIG. 9, the operator rotates the pressing handle 110 clockwise around the stand pin 107b, thereby moving the pressing roller arm 108 together with the pressing roller 109 in the arrow direction B in FIG. . At this time, the film set arm 107 is fixed at the position shown in FIG. 9 by a latch mechanism (not shown).

Here, since the film setting arm 107 maintains the posture shown in FIG. 9, the pressing means 111 presses the pressure roller arm 108 against the belt 3a, so that the pressure roller 109 is applied to the belt 3a from above the adhesive tape 200a. It rolls and moves while pressing the surface of At this time, the tape mounting roller 113 and the tape mounting guide 114 used for restraining the leading end of the adhesive tape 200a in the steps described with reference to FIGS. Since it is provided on the arm 112 , it retracts without hindering the movement of the pressing roller 109 .

While maintaining the posture shown in FIG. 10, the operator relatively moves the tape applying device 100 and the belt 3a constituting the conveying mechanism 3, thereby applying the adhesive tape 200a to the surface of the belt 3a. can be done.

For example, by rotating the belt 3a in the counterclockwise direction (arrow direction C of the roller 3c on the upstream side of the conveying direction of the electrode substrate 2 in the belt 3a constituting the conveying mechanism 3 in FIG. 10), the adhesive tape 200a is rotated by the belt 3a. is unwound from the adhesive tape roll 200 according to the movement of the belt 3a and stuck to the entire circumference of the surface of the belt 3a.

The adhesive tape 200a is subjected to tension due to the peel force when it is unwound from the adhesive tape roll 200, and is adhered while being pressed by the pressure roller 109. Therefore, the belt 3a may meander in the conveying direction. It can be pasted in a state where there is no deviation or floating from the surface of the belt 3a.

Since the pressing roller 109 can maintain the pressing state in this way, the adhesive tape 200a is unwound from the adhesive tape roll 200 according to relative movement with the belt 3a constituting the conveying mechanism 3, and adhered to the surface of the belt 3a up to an arbitrary position. can be attached. As a result, it is possible to attach an arbitrary length depending on the amount of relative movement.

Further, by using a pressure roller 109 which is a rotating roller as a tape pressure member, the adhesive tape 200a can be moved in an arc shape, and after contact with the surface of the belt 3a, it can be pushed up along the surface of the belt 3a. becomes movable. As a result, the tip of the adhesive tape 200a attached to the surface of the tape attaching roller 113 can be spread and attached to the surface of the belt 3a.

Further, in this embodiment, the tape path exists within the movable range of the pressing roller 109 . As a result, the adhesive tape 200a stuck on the tape attachment roller 113 is separated from the cut surface without shifting the tape position, and the tip of the adhesive tape 200a comes into contact with a human hand in the process of restraining the leading end of the adhesive tape 200a, thereby inhibiting the adhesiveness of hand oil or the like. It is possible to remove the tip that may have had foreign objects attached to it.

Next, the treatment of the trailing edge of the adhesive tape 200a when the adhesive tape 200a is attached to the belt 3a will be described.

Here, FIG. 11 is a diagram showing the positional relationship of the trailing edge of the tape when the tape is pasted all around.

A position indicated by "a" in FIG. Further, the position indicated by "b" in FIG. 11 is the leading end position where the leading end of the adhesive tape 200a that was first pasted is rotated and returned.

Next, the tape rear end cutting process in the tape applying device 100 will be described.

FIG. 12 is a diagram showing the tape trailing edge cutting process.

The operator stops the movement of the belt 3a constituting the conveying mechanism 3 at a position where the distance from the trailing edge cut guide 115a to the point a and the distance from the point a to the point b satisfy the following relationship. Let
Distance from trailing edge cut guide 115a to point a≧Distance from point a to point b

Next, as shown in FIG. 12, the operator rotates the pressing handle 110 in the direction opposite to the arrow B in FIG. 10, unlatches the film set arm 107, opens it, and releases the pressing roller 109 from the pressed state. do.

Next, the operator presses the adhesive tape 200 a pulled out from the adhesive tape roll 200 to the tape trailing edge attaching plate 115 to attach it.

Next, the operator cuts the adhesive tape 200a at the position of the adhesive tape trailing edge cut guide 115a.

Next, the tape splicing portion applying process in the tape applying apparatus 100 will be described.

13A and 13B are diagrams showing the step of attaching the tape connecting portion.

As shown in FIG. 13, the operator closes and latches the film set arm 107 and at the same time presses the pressing roller 109 .

Next, the operator rotates the belt 3a constituting the conveying mechanism 3 in the arrow direction D shown in FIG. Along with this rotational movement, the trailing edge cutting point c of the adhesive tape 200a is separated as the belt 3a constituting the conveying mechanism 3 moves. Then, the trailing cut point c of the adhesive tape 200a is pressed at the nip point of the pressing roller 109, and overlaps and adheres to the leading end of the winding tape at the point b.

In the following steps, the trailing edge of the adhesive tape 200a is superimposed on the leading edge of the adhesive tape 200a and pressed by the pressure roller 109 to attach the adhesive tape 200a. The liquid adhering member 11 can be formed by sticking the tape 200a.

In the present embodiment, the tip of the adhesive tape 200a that has been wrapped around the point b, which is the tip position where the tip of the adhesive tape 200a that was first attached has been rotated and returned, is not limited to this, and the adhesive tape By performing the same process not only at the tip of the adhesive tape 200a but also at any position, the sticking length of the adhesive tape 200a can be varied.

As described above, according to the present embodiment, during borderless printing, the liquid L ejected onto the electrode substrate 2 is caused to adhere to the liquid adhering member 11, and then the liquid L on the liquid adhering member 11 is removed by the liquid removing member 12. Remove. As a result, printing can be performed without causing the liquid L to adhere to the belt 3a constituting the transport mechanism 3 during borderless printing.

Further, according to the present embodiment, the tip of the adhesive tape 200a is constrained and positioned, the adhesive tape 200a constrained in a tense state is pressed and attached to the belt 3a, and hand oil or the like adheres to the first constrained tip. Since the tip of the adhesive tape 200a is pressed and attached after cutting off the portion that is likely to be attached, it is possible to perform reliable attachment with high positional accuracy with a simple and compact structure. That is, according to the present embodiment, the liquid adhesion member 11 used for printing without adhering the liquid to the conveying surface can be accurately installed with a small and simple device during borderless printing. can be done.

Note that the controller of the electrode printing apparatus 1 controls the liquid ejection heads 4 and 7 so that the liquid L is not applied to the area where the liquid adhering member 11 is not provided on the conveying surface of the electrode substrate 2 on the belt 3 a that constitutes the conveying mechanism 3 . may be controlled so as not to discharge the By doing so, the liquid L does not protrude from the liquid adhering member 11, so that the transport surface of the transport mechanism 3 and the electrode printing device 1 are not soiled.

In this embodiment, ink (liquid L) is ejected from the liquid ejection heads 4 and 7 to form an ink layer or an active material layer on the electrode substrate 2. However, the present invention is not limited to this. The insulating layer may be formed by ejecting a liquid L containing an insulating material from a liquid ejection head.

(Second embodiment)
Next, a second embodiment will be described.

In the second embodiment, both end portions of the belt 3a constituting the transport mechanism 3 in the direction parallel to the transport surface of the electrode substrate 2 and perpendicular to the transport direction X (the liquid L is discharged outside the electrode substrate 2). The difference from the first embodiment is that the liquid adhering member 11 is provided so as to cover the position where the liquid adhering member 11 is positioned. Hereinafter, in the description of the second embodiment, the description of the same portions as those of the first embodiment will be omitted, and the portions different from those of the first embodiment will be described.

Here, FIG. 14 is a plan view showing an ink removing mechanism provided in the electrode printing device 1 according to the second embodiment, and FIG. It is a front view which shows the state seen from the side.

As shown in FIGS. 14 and 15, the liquid adhering member 11 is formed on both ends of the belt 3a constituting the transport mechanism 3 in a direction parallel to the transport surface of the electrode substrate 2 and orthogonal to the transport direction X (electrode substrate 2 (position where the liquid L is ejected outside the )). Therefore, part of the liquid adhering member 11 is sandwiched between the edge of the electrode substrate 2 and the belt 3 a that constitutes the transport mechanism 3 . As a result, the electrode substrate 2 is inclined at both ends in the direction perpendicular to the transport direction X with respect to the transport surface of the electrode substrate 2 on the belt 3a constituting the transport mechanism 3, provided that it has flexibility. will do.

By providing the liquid adhering member 11 made of an impermeable material so as to cover both ends of the transport surface of the electrode substrate 2 (positions where the liquid L is ejected to the outside of the electrode substrate 2), the liquid Since the liquid L ejected from the ejection heads 4 and 7 to the outside of the electrode substrate 2 adheres to the liquid adhering member 11, the liquid L is ejected to the outside of the electrode substrate 2 onto the conveying surface of the electrode substrate 2 on the belt 3a constituting the conveying mechanism 3. It is possible to prevent the deposited liquid L from adhering.

Also in the present embodiment, the distance between the liquid adhesion member 11 and the uppermost side of the side of the electrode substrate 2 in contact with the liquid adhesion member with respect to the liquid adhesion member 11, that is, the electrode substrate The longest distance among the distances (distances in the gap) vertically lowered from the end of 2 to the liquid adhering member 11 is set to 30 μm or more. By doing so, it is possible to prevent the liquid L adhering to the liquid adhering member 11 from flowing to the back surface of the electrode substrate 2 due to capillary action.

(Third Embodiment)
Next, a third embodiment will be described.

The third embodiment differs from the first and second embodiments in that it is an electrode forming apparatus provided with an electrode printing apparatus 1 . Hereinafter, in the description of the third embodiment, the description of the same portions as those of the first and second embodiments will be omitted, and the portions that are different from those of the first and second embodiments will be omitted. will be explained.

Here, FIG. 16 is a diagram schematically showing an electrode forming apparatus 50 according to the third embodiment. As shown in FIG. 16, the electrode forming apparatus 50 is provided downstream of the electrode printing apparatus 1, such as a press roll as means for pressing the obtained thin film electrode, or a cutting mechanism such as a slit blade or a laser for cutting the thin film electrode. , the post-processing mechanism 20 is provided.

Although the preferred embodiments and examples of the present invention have been described above, the present invention is not limited to such specific embodiments and examples, and unless specifically limited in the above description, the scope of the invention is set forth in the claims. Various modifications and changes are possible within the spirit and scope of the invention described in the scope. For example, it may be an appropriate combination of the technical matters described in the above embodiments and examples.

For example, in the above embodiments, the thin-film electrode having the above effect of the present invention is applied to a lithium-ion secondary battery, but the present invention is not limited to this, and the secondary battery, which is the electricity storage device described above, or the fuel cell. It can also be applied or mutatis mutandis to power generation devices such as

The effects described as appropriate in the embodiments of the present invention are merely enumerations of the most suitable effects resulting from the present invention, and the effects of the present invention are limited to those described in the embodiments of the present invention. not a thing

REFERENCE SIGNS LIST 1 liquid ejecting device 2 substrate 3 conveying portion 4, 7 ejecting portion 11 liquid adhering member 100 applying device 106a tape holding member 109 tape pressing member 114 tape attaching member 114a mark 115 tape rear end applying member 200a tape

JP 2006-264172 A

Claims (21)

a tape holding member that holds the tape;
a tape attachment member that positions and attaches the leading end of the tape held by the tape holding member;
a tape pressurizing member that operates to apply pressure to a conveying surface that conveys a substrate while peeling off the tape attached to the tape attaching member and restrained in a tensioned state from the tape attaching member;
A sticking device comprising: The tape pressing member can continuously maintain the state of pressing the tape against the transport surface,
The sticking device according to claim 1, characterized in that: The tape pressing member has a rotating roller that presses the tape against the transport surface,
The rotating roller is movable in an arc around the tape, and is movable along the conveying surface after contact with the conveying surface.
The sticking device according to claim 1, characterized in that: The path of the tape exists within the movable range of the tape pressing member,
The sticking device according to claim 1, characterized in that: the tape mounting member comprises a rotating roller;
When the tape pressing member moves along the conveying surface and comes into contact with it, it can be moved so as to be pushed up.
The sticking device according to any one of claims 1 to 4, characterized in that: At least one side of the tape has an adhesive surface, and the tape has a roll shape.
The sticking device according to any one of claims 1 to 5, characterized in that: The tape holding member includes a regulating member in the axial direction of the tape and a bearing member with low load resistance in the rotational direction.
The sticking device according to any one of claims 1 to 6, characterized in that: The tape attachment member includes a mark indicating a position corresponding to the edge position in the width direction of the tape positioned by the tape holding member.
The sticking device according to any one of claims 1 to 7, characterized in that: The tape attachment member has a slit or groove parallel to the width direction of the tape on the surface to which the tape is attached,
The sticking device according to any one of claims 1 to 8, characterized in that: A tape rear end attaching member is provided on the conveying surface side in the middle of the tape path connecting the tape holding member and the tape attaching member,
The sticking device according to any one of claims 1 to 9, characterized in that: The tape rear end attaching member has a slit or groove parallel to the width direction of the tape on the tape side surface.
The sticking device according to claim 10, characterized in that: The tape, the tape holding member, the tape mounting member, and the tape pressing member are movable in the width direction of the transport surface while maintaining alignment with the transport surface.
The sticking device according to claim 1, characterized in that: A sticking device according to any one of claims 1 to 12;
a transport unit that transports the substrate;
a liquid adhering member provided on the conveying section by the pasting device and partially sandwiched between an end portion of the substrate and the conveying section;
a discharge section for discharging a liquid composition onto the substrate and the liquid adhesion member;
with
the substrate is inclined with respect to a transport surface of the substrate in the transport unit;
A liquid ejection device characterized by: a liquid ejection device according to claim 13;
a post-processing mechanism provided downstream of the liquid ejection device;
with
The substrate is an electrode substrate,
An electrode forming apparatus characterized by: A liquid ejection device according to claim 13,
The substrate is a separator,
A multilayer separator forming apparatus characterized by: a tape holding step of holding the tape on a tape holding member;
a tape attaching step of positioning and attaching the tip of the tape held by the tape holding member to a tape attaching member;
A tape pressing member is operated to apply pressure to a conveying surface for conveying a substrate while peeling off the tape attached to the tape attaching member and restrained in a tensioned state from the tape attaching member and attaching the tape to the conveying surface for conveying the substrate. a pressure process;
A pasting method comprising: In the tape attaching step, after positioning and attaching the tape to the tape attaching member, the tip of the tape is cut off from the tape attaching member.
The sticking method according to claim 16, characterized in that: In the tape pressurizing step, the tape is pressed by the tape pressurizing member and adhered to the conveying surface, and then the tape pressurizing member is moved along the conveying surface to remove the tape from the tape mounting member. While peeling off the tape, sticking to the conveying surface up to the tip of the tape,
The sticking method according to claim 16, characterized in that: In the tape pressing step, the tape is pressed to the transport surface by the tape pressing member, and the tape is applied to an arbitrary position by relative movement between the tape pressing member and the transport surface.
The sticking method according to claim 16, characterized in that: The substrate is an electrode substrate,
The sticking method according to any one of claims 16 to 19, characterized in that: The substrate is a separator,
The sticking method according to any one of claims 16 to 19, characterized in that:

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