KR20170091043A - Assembly production method and assembly - Google Patents

Abstract

A core material is hardly dropped off from a side plate protecting the end surface of the winding body, and wear debris hardly occurs. Four winding bodies having the width of L_1 obtained by winding a separator around the core and five cushioning materials having the thickness of L_2 are inserted into a core material having the length L_3 and a convex part having the height of the protector, L_4, is inserted into the core material, wherein the following formula: L_4> 4L_1 + 5L_2- L_3> 0 is satisfied.

Description

[0001] ASSEMBLY PRODUCTION METHOD AND ASSEMBLY [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manufacturing method and assembly of an assembly for assembling a wound body (roll) wound with a film.

Inside the lithium ion secondary battery, the positive electrode and the negative electrode are separated by a porous separator. For the production of the lithium ion secondary battery, a separator wound body in which the separator is wound around a cylindrical core is used.

In the production of the lithium ion secondary battery, since the incorporation of dust is fatal, the separator winding is packed so as to prevent intrusion of dust or generation of dust. Further, in order to improve the efficiency of the transportation and packaging process, a plurality of separator windings are inserted into the same core member and assembled into one roll assembly.

For example, in the configuration disclosed in Patent Document 1, a plurality of rolls, a protective sheet for protecting the end face of the roll, and a spacer inserted between the rolls are inserted into the cylindrical center, It is packed. Patent Literature 2 to 3 further disclose that the core of the roll is directly engaged with the soccer yoke to protect the end face of the roll like the protective sheet.

Further, for example, in the structure described in Patent Document 4, cores of a plurality of rolls are inserted into a pillar portion protruding laterally from the upper portion of the plate, and a cushioning material is screwed to the end face of the pillar portion. So that the roll is prevented from falling off from the support.

Japanese Unexamined Patent Application Publication No. 2010-274922 (published on December 09, 2010) Japanese Unexamined Patent Publication No. 2006-298455 (published on November 02, 2006) International Publication WO2008 / 123124 (International Publication on October 16, 2008) Utility Model Registration No. 3195120 (issued on December 25, 2014)

However, the above-described conventional techniques have the following problems.

In the configuration described in Patent Document 1, the center is engaged with the center of the protective sheet by passing the center through the opening formed at the center of the protective sheet. Therefore, there is a problem that the center is removed from the opening portion due to vibration during transportation, and the assembly is liable to be disassembled. In order to solve this problem, when the center is elongated so as not to come off from the opening, there arises another problem that the transportation efficiency is lowered because the roll assembly becomes bulky.

In the structure described in Patent Document 4, the cushioning member is screwed by screwing a male screw having a knob to the female screw portion formed on the end face of the support. Therefore, collision and friction occur between the threaded portion of the female screw portion and the threaded portion of the male screw jig to which the knob is attached due to vibration during transportation. Since the male screw jig with the tread knob is also made of a hard material, there is a problem that scum easily occurs due to collision and friction.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to realize a roll assembly and a manufacturing method thereof, in which a core material is hardly dropped off from a side plate protecting an end face of the winding body, .

According to one aspect of the present invention, there is provided a method of manufacturing an assembly, wherein a length of a first convex portion projecting from a first base portion of a plate-shaped first side plate is L ₄ , the volume when the length of the core member in the insertion direction when inserted into the core member in CHENG winding the plate-shaped member in the L _3, L _3> L ₄ is once inserted into the core of the first convex portion A sum of lengths of one or a plurality of the rolled members in the insertion direction is L _{1, sum} , and a _sum of lengths of one or a plurality of the plate members is L _{2, sum} , The core member is inserted into one or a plurality of the plate members and one or a plurality of the plate members so that L ₃ + L ₄ > L _{1, sum} + L _{2, sum} > L ₃ , The process comprising the steps of:

Another method of manufacturing an assembly according to an aspect of the present invention is characterized in that the length of the first convex portion projecting from the first base portion of the plate side of the first side plate is L ₄ and the core A first inserting step of inserting the first convex portion having L ₃ > L ₄ into one end of the core material when the length of the core material in the inserting direction when passing through is L _3; the winding of, one, or if a plurality of length the sum of the winding as L _{1, sum,} L ₃ + L _4> such that L _{1, sum>} L _3, 1 or more in the core material And an inserting step of inserting the inserting hole into the inserting hole.

The assembly relating to an embodiment of the present invention is characterized in that the length of the first convex portion projecting from the first base portion of the first side plate of the first side plate is L ₄ and the cores are inserted into the winding body and the plate- in the insertion direction of the case, when the length of the core member with L _3, L _3> L ₄ of the first convex portion is inserted into one end of the core material, in the insertion direction, one or a plurality If the length of the sum of the volume length sum of L _1, the _sum, and one or a plurality of the sheet members of the hoeche as L _{2, sum,} L ₃ + L _4> L _{1, sum} + L _{2, sum} > L ₃ , wherein one or a plurality of the winding members and one or a plurality of the plate members are inserted into the core member.

Another assembly according to an aspect of the present invention is characterized in that the length of the first convex portion projecting from the first base portion of the first side plate of the first side plate is L ₄ and the length of the first convex portion projecting from the center of the core in the insertion direction, when the length of the core member with L _3, L _3> L ₄ of the first convex portion of the can is inserted into one end of the core material, in the insertion direction, one or a plurality of the And the sum of the lengths of the winding bodies is L _{1, sum} , one or a plurality of the winding bodies are inserted into the core material so that L ₃ + L ₄ > L _{1 and sum} > L ₃ .

INDUSTRIAL APPLICABILITY In the method of manufacturing an assembly for assembling a winding body, the present invention exerts the effect that the core material is less likely to fall off from the side plate protecting the end face of the winding body and the effect that the wear debris is less likely to occur.

1 is a schematic view showing a sectional configuration of a lithium ion secondary battery.
Fig. 2 is a schematic diagram showing the detailed structure of the lithium ion secondary battery shown in Fig. 1. Fig.
3 is a schematic view showing another detailed structure of the lithium ion secondary battery shown in Fig.
4 is a schematic view showing a configuration of a slit apparatus for slitting a separator.
5 is a view showing a configuration of a cutting apparatus for a slit apparatus shown in Fig.
6 is a schematic diagram showing the structure of a separator winding according to an embodiment of the present invention.
7 is a schematic diagram showing a configuration of a cushioning material according to an embodiment of the present invention.
Fig. 8 is a schematic view showing the structure of a core material according to an embodiment of the present invention. Fig.
Fig. 9 is a schematic diagram showing a configuration of a protector according to an embodiment of the present invention. Fig.
10 is a schematic diagram showing an example of a process of assembling a roll assembly according to an embodiment of the present invention.
11 is a schematic view showing a sectional configuration of a roll assembly according to an embodiment of the present invention.
12 is a schematic view showing a sectional configuration of a modified example of the roll assembly according to the embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the dimensions, materials, shapes, relative arrangements, processing methods, and the like of the structures described in this embodiment are merely one embodiment, and the scope of the present invention should not be construed to be limited to these embodiments. Also, the drawings are schematic and the proportions and shapes of the dimensions are different from those of the real world.

[Basic configuration]

The present invention relates to a separator for a battery that is wound around a separator winding subject to which an assembly according to an embodiment of the present invention is carried out, and a lithium ion secondary battery, a separator, a heat resistant separator, a manufacturing method of a separator and a heat resistant separator, .

(Lithium ion secondary battery)

A nonaqueous electrolyte secondary battery typified by a lithium ion secondary battery has a high energy density. Therefore, as a battery for use in a mobile device such as a device such as a personal computer, a mobile phone, or a portable information terminal, a vehicle, an automobile or an aircraft, and as a stationary battery contributing to the stable supply of electric power, Batteries are widely used.

1 is a schematic view showing a cross-sectional structure of a lithium ion secondary battery 1. 1, the lithium ion secondary battery 1 includes a cathode 11, a separator 12 (a separator for a film and a battery), and an anode 13. The external device 2 is connected between the cathode 11 and the anode 13 on the outside of the lithium ion secondary battery 1. [ When the lithium ion secondary battery 1 is charged, electrons move in the direction A and in the direction B in the discharge.

(Separator)

The separator 12 is disposed between the cathode 11 which is a positive electrode of the lithium ion secondary battery 1 and the anode 13 which is a negative electrode of the separator 12 so as to be sandwiched therebetween. The separator 12 is a porous film capable of separating the cathode 11 and the anode 13 while allowing movement of lithium ions therebetween. The separator 12 is a porous film containing a polyolefin resin as a main component. The porous film comprising a polyolefin resin as a main component means that the proportion of the polyolefin resin component in the porous film is usually 50 vol% or more, preferably 90 vol% or more, more preferably 90 vol% or more, 95% by volume or more. It is preferable that the polyolefin resin of the porous film contains a high molecular weight component having a weight average molecular weight in the range of 5 10 ⁵ to 15 10 ⁶ . Aqueous electrolyte secondary battery comprising the porous film, that is, the whole of the separator for the non-aqueous electrolyte secondary battery, and the porous film to be described later and the porous layer to be described later, are contained as the polyolefin resin of the porous film, particularly the polyolefin resin having a weight- It is more preferable that the polyolefin resin having a weight average molecular weight of at least 1,000,000 is included because the strength of the whole laminated separator is increased.

Examples of the polyolefin resin include homopolymers of high molecular weight obtained by polymerizing ethylene, propylene, 1-butene, 4-methyl-1-pentene and 1-hexene (for example, polyethylene, polypropylene, ) Or a copolymer (for example, an ethylene-propylene copolymer). The porous film comprising a polyolefin-based resin as a main component is a layer containing one kind of the polyolefin-based resin or a layer containing two or more kinds of these polyolefin-based resins. Particularly, among the polyolefin-based resins, a high molecular weight polyethylene-based resin mainly composed of ethylene is preferable in terms of being capable of blocking (shutdown) the flow of an excessive current at a lower temperature. Further, the porous film does not interfere with the inclusion of components such as additives other than the polyolefin-based resin within a range that does not impair the function of the layer. Examples of the additive include organic compounds (organic additives), and organic compounds may be antioxidants (organic antioxidants) or lubricants.

Examples of the polyethylene resin include low density polyethylene, high density polyethylene, linear polyethylene (ethylene -? - olefin copolymer), ultra high molecular weight polyethylene having a weight average molecular weight of 1 million or more, Ultra high molecular weight polyethylene is more preferable.

Fig. 2 is a schematic diagram showing the detailed structure of the lithium ion secondary battery 1 shown in Fig. 1, wherein (a) shows a typical configuration, (b) shows a case in which the lithium ion secondary battery 1 is heated (C) shows a state in which the temperature of the lithium ion secondary battery 1 is rapidly increased. As shown in Fig. 2 (a), the separator 12 has a plurality of holes P formed therein. Generally, the lithium ions 3 of the lithium ion secondary battery 1 can pass through the hole P.

Here, for example, the lithium ion secondary battery 1 may be heated up due to overcharge of the lithium ion secondary battery 1 or a large current caused by short-circuiting of external equipment. In this case, as shown in Fig. 2 (b), the separator 12 is melted or softened and the hole P is closed. Then, the separator 12 is contracted. Thereby, since the movement of the lithium ions 3 is stopped, the above-described temperature rise also stops.

However, when the lithium ion secondary battery 1 is rapidly heated, the separator 12 shrinks sharply. In this case, as shown in Fig. 2 (c), the separator 12 may be broken. Since the lithium ions 3 leak from the broken separator 12, the movement of the lithium ions 3 does not stop. Therefore, the temperature rise continues.

(Heat-resistant separator)

Fig. 3 is a schematic diagram showing another configuration of the lithium ion secondary battery 1 shown in Fig. 1, wherein (a) shows a typical configuration, (b) shows a case where the lithium ion secondary battery 1 is rapidly heated It shows the state when it did. As shown in Fig. 3A, the separator 12 may be a heat-resistant separator comprising the porous film 5 and the heat-resistant layer 4. As shown in Fig. The heat resistant layer 4 is laminated on one surface of the porous film 5 on the cathode 11 side. The heat resistant layer 4 may be laminated on one side of the porous film 5 on the anode 13 side or may be laminated on both sides of the porous film 5. In the heat-resistant layer 4, the same hole as the hole P is formed. Normally, the lithium ions 3 pass through the hole P and the hole of the heat resistant layer 4. The heat resistant layer 4 may be formed of a material such as a polyolefin such as polyethylene, polypropylene, polybutene, and ethylene-propylene copolymer, a fluororesin such as polyvinylidene fluoride (PVDF) or polytetrafluoroethylene A fluorinated rubber such as a vinylidene fluoride-hexafluoropropylene-tetrafluoroethylene copolymer or an ethylene-tetrafluoroethylene copolymer, an aromatic polyamide, a wholly aromatic polyamide (an aramid resin), a styrene-butadiene copolymer Acrylonitrile-acrylic acid ester copolymer, styrene-acrylic acid ester copolymer, ethylene propylene rubber, and polyvinyl acetate; polyphenylene ether, polysulfone, polyethersulfone , Polyphenylene sulfide, polyetherimide, polyamideimide, polyetheramide, Water-soluble polymers such as polyvinyl alcohol, polyethylene glycol, cellulose ether, sodium alginate, polyacrylic acid, polyacrylamide, and polymethacrylic acid; resins having a melting point or a glass transition temperature of 180 DEG C or higher such as polyester and polyester amide; And the like.

Specific examples of the aromatic polyamide include poly (paraphenylene terephthalamide), poly (metaphenylene isophthalamide), poly (parabenzamide), poly (methabenzamide), poly Poly (4,4'-biphenylene dicarboxylic acid amide), poly (4,4'-benzanilide terephthalamide), poly Naphthalene dicarboxylic acid amide), poly (paraphenylene-2,6-naphthalene dicarboxylic acid amide), poly (metaphenylene-2,6-naphthalene dicarboxylic acid amide), poly Amide), paraphenylene terephthalamide / 2,6-dichloropara phenylene terephthalamide copolymer, and mephenylene terephthalamide / 2,6-dichloropara phenylene terephthalamide copolymer. Of these, poly (paraphenylene terephthalamide) is more preferable.

Among these resins, polyolefin, fluororesin, aromatic polyamide, and water-soluble polymer are more preferable. In particular, when the porous layer is arranged to face the positive electrode of the non-aqueous electrolyte secondary battery, fluororesin is particularly preferable. When fluorine resin is used, it is easy to maintain various properties such as rate characteristics and resistance characteristics (liquid resistance) of the nonaqueous electrolyte secondary battery due to acid deterioration during operation of the nonaqueous electrolyte secondary battery. The water-soluble polymer is more preferable from the viewpoints of process and environmental load because water can be used as a solvent for forming the porous layer, and cellulose ether and sodium alginate are more preferable, and cellulose ether is particularly preferable.

Specific examples of the cellulose ether include carboxymethylcellulose (CMC), hydroxyethylcellulose (HEC), carboxyethylcellulose, methylcellulose, ethylcellulose, cyanethylcellulose, and oxyethylcellulose. CMC and HEC with less deterioration in long-term use and excellent chemical stability are more preferable, and CMC is particularly preferable.

It is more preferable that the heat resistant layer includes a filler. Therefore, when the heat resistant layer includes a filler, the resin has a function as a binder resin. The filler is not particularly limited, and may be a filler made of an organic material or a filler made of an inorganic material.

Specific examples of the filler made of an organic material include acrylic resins such as styrene, vinyl ketone, acrylonitrile, methyl methacrylate, ethyl methacrylate, glycidyl methacrylate, glycidyl acrylate, A homopolymer or two or more kinds of copolymers of monomers, fluorine resins such as polytetrafluoroethylene, tetrafluoroethylene-6 propylene fluoride copolymer, tetrafluoroethylene-ethylene copolymer, polyvinylidene fluoride, melamine resin, urea resin , Polyethylene, polypropylene, polyacrylic acid, polymethacrylic acid, and the like.

Specific examples of the inorganic filler include calcium carbonate, talc, clay, kaolin, silica, hydrotalcite, diatomaceous earth, magnesium carbonate, barium carbonate, calcium sulfate, magnesium sulfate, barium sulfate, aluminum hydroxide, A filler composed of an inorganic substance such as magnesium oxide, magnesium hydroxide, calcium oxide, magnesium oxide, titanium oxide, titanium nitride, alumina (aluminum oxide), aluminum nitride, mica, zeolite and glass. Only one kind of filler may be used, or two or more kinds of fillers may be used in combination.

Among these fillers, fillers composed of an inorganic substance are preferable, and fillers composed of inorganic oxides such as silica, calcium oxide, magnesium oxide, titanium oxide, alumina, mica, zeolite, aluminum hydroxide and boehmite are more preferable, and silica, magnesium oxide , Titanium oxide, aluminum hydroxide, boehmite and alumina is more preferable, and alumina is particularly preferable. There are many crystalline forms of alumina such as? -Alumina,? -Alumina,? -Alumina,? -Alumina, and the like, but any of them can be preferably used. Of these,? -Alumina is most preferable because of its particularly high thermal stability and chemical stability.

The shape of the filler varies depending on the method of producing the organic material or the inorganic material as the raw material, the dispersion condition of the filler when the coating solution for forming the heat resistant layer is produced, and the shape of the filler varies depending on the conditions such as spherical, elliptical, Shape, or a pseudo-shape having no specific shape.

In the case where the heat-resistant layer contains a filler, the content of the filler is preferably 1 to 99% by volume, more preferably 5 to 95% by volume, of the heat-resistant layer. When the content of the filler is within the above range, the voids formed by the contact between the fillers are less occluded by the resin or the like, so that sufficient ion permeability can be obtained and the apparent weight per unit area can be made an appropriate value have.

The heat resistant layer 4 assists the porous film 5 even when the lithium ion secondary battery 1 is rapidly heated and the porous film 5 is melted or softened as shown in FIG. 3 (b) The shape of the porous film 5 is maintained. Therefore, the porous film 5 is melted or softened to cause the hole P to be closed. Thereby, since the movement of the lithium ions 3 stops, the overdischarge or overcharge described above also stops. Thus, breakage of the separator 12 is suppressed.

(Manufacturing Process of Separator and Heat-Resistant Separator)

The production of the separator and the heat-resistant separator of the lithium ion secondary battery 1 is not particularly limited, and can be carried out by a known method. Hereinafter, it is assumed that the porous film 5 mainly contains polyethylene as its material. However, even when the porous film 5 contains other materials, the separator 12 (heat-resistant separator) can be manufactured by the same manufacturing process.

For example, a method of adding an inorganic filler or a plasticizer to a thermoplastic resin, forming the film, and then washing and removing the inorganic filler and the plasticizer with an appropriate solvent. For example, in the case of the polyolefin separator in which the porous film 5 is formed of a polyethylene resin containing ultra-high molecular weight polyethylene, it can be produced by the following method.

The method comprises (1) a kneading step of kneading ultrahigh molecular weight polyethylene with an inorganic filler (e.g., calcium carbonate, silica) or a plasticizer (e.g., low molecular weight polyolefin, liquid paraffin) to obtain a polyethylene resin composition, (3) a step of removing the inorganic filler or the plasticizer from the film obtained in the step (2); and (4) a step of stretching the film obtained in the step (3) To obtain a porous film (5). The step (4) may be carried out between the steps (2) and (3).

By the removal step, a plurality of fine holes are formed in the film. The fine pores of the film stretched by the stretching process become the aforementioned hole (P). Thereby, the porous film 5 (the separator 12 having no heat resistant layer), which is a polyethylene microporous membrane having a certain thickness and permeability, is obtained.

In the kneading step, 100 parts by weight of ultrahigh molecular weight polyethylene, 5 to 200 parts by weight of a low molecular weight polyolefin having a weight average molecular weight of 10,000 or less, and 100 to 400 parts by weight of an inorganic filler may be kneaded.

Thereafter, in the coating process, the heat resistant layer 4 is formed on the surface of the porous film 5. For example, an aramid / NMP (N-methyl-pyrrolidone) solution (coating solution) is applied to the porous film 5 to form a heat resistant layer 4 which is an aramid heat resistant layer. The heat-resistant layer 4 may be formed on only one side of the porous film 5 or on both sides thereof. As the heat resistant layer 4, a mixed solution containing a filler such as alumina / carboxymethyl cellulose may be coated.

In the coating process, the polyvinylidene fluoride / dimethylacetamide solution (coating liquid) is applied (coated) to the surface of the porous film 5 and the solidified (coagulated) An adhesive layer may be formed on the surface. The adhesive layer may be formed only on one side of the porous film 5 or on both sides thereof.

The method of applying the coating liquid to the porous film 5 is not particularly limited as long as it can uniformly wet-coat it, and conventionally known methods can be employed. Examples of the coating method include a capillary coating method, a spin coating method, a slit die coating method, a spray coating method, a dip coating method, a roll coating method, a screen printing method, a flexo printing method, a bar coater method, And the like. The thickness of the heat resistant layer 4 can be controlled by the thickness of the coating wet film and the solid content concentration in the coating liquid.

A resin film, a metal belt, a drum, or the like can be used as a support for fixing or transporting the porous film 5 when coating.

As described above, the separator 12 (heat-resistant separator) in which the heat-resistant layer 4 is laminated on the porous film 5 can be produced. The fabricated separator is wound around a cylindrical core. In addition, the object to be produced by the above production method is not limited to the heat resistant separator. This manufacturing method does not need to include a coating process. In this case, the object to be produced is a separator having no heat resistant layer. An adhesive separator having another functional layer (for example, an adhesive layer to be described later) instead of the heat resistant layer may be produced by the same manufacturing method as that of the heat resistant separator.

(Slit device)

(Hereinafter referred to as " separator ") having no heat resistant separator or heat resistant layer is preferably a width (hereinafter, referred to as " product width ") suitable for applications such as the lithium ion secondary battery 1 and the like. However, in order to increase the productivity, the separator is manufactured such that its width is equal to or greater than the product width. And, once manufactured, the separator is cut (slit) into a product width.

The " width of the separator " means the length of the separator in a direction substantially perpendicular to the longitudinal direction and the thickness direction of the separator. Hereinafter, a separator having a wide width before slitting will be referred to as a " fabric ", and a slit separator will be specifically referred to as a " slit separator ". The slit means that the separator is cut along the longitudinal direction (the film flow direction in the production, MD: Machine direction), and the cut means that the separator is cut along the transverse direction (TD) it means. The transverse direction (TD) means a direction substantially perpendicular to the longitudinal direction (MD) of the separator and the thickness direction.

Fig. 4 is a schematic view showing the configuration of the slit apparatus 6 for slitting the separator. Fig. 4 (a) shows the overall configuration, and Fig. 4 (b) shows the configuration before and after slitting the fabric. 4A, the slit apparatus 6 includes a take-up roller 61, rollers 62 to 69 and a plurality of take-up rollers 70U, 70L which are rotatably supported in a cylindrical shape Respectively. The slit apparatus 6 is further provided with a cutting apparatus 7 to be described later.

(Before slit)

In the slit apparatus 6, a cylindrical core (c) having a rounded end is sandwiched between the unwinding rollers (61). As shown in Fig. 4 (b), the farthest end is drawn from the core (c) to the path (U) or (L). The unwound fabric is conveyed to the roller 68 via the rollers 63 to 67. [ In the process of being transported, the fabric is slit into a plurality of separators. The roller 67 may be omitted. At this time, the farthest end is conveyed from the roller 66 to the roller 68.

(After slit)

As shown in Fig. 4 (b), a part of the plurality of slit separators is wound on each of the cylindrical cores u (bobbins) fitted in the winding roller 70U. Another part of the plurality of slit separators is wound around each of the cylindrical cores 1 (bobbins) fitted in the winding rollers 70L. Further, the integral of the slit separator and the core (u 占) rolled up in a roll is referred to as " winding body ".

(Cutting device)

Fig. 5 is a diagram showing the configuration of the cutting device 7 of the slit apparatus 6 shown in Fig. 4 (a). 5 (a) is a side view of the cutting device 7, and Fig. 5 (b) is a front view of the cutting device 7. Fig. 5 (a) and 5 (b), the cutting device 7 includes a holder 71 and a blade 72. The holder 71 is fixed to a casing or the like provided in the slit apparatus 6. [ The holder 71 holds the blade 72 so that the positional relationship between the blade 72 and the conveyed separator is fixed. The blade 72 slits the fabric of the separator by a sharply pointed edge.

[Embodiment]

A separator winding which is an object to be assembled according to the embodiment of the present invention, and a cushioning material, a core material, and a protector to be assembled together will be described below in order.

<Structure of Separator Winding Member>

Fig. 6 is a view showing the structure of the separator winding body 10 to be assembled according to the embodiment of the present invention. 6 (a) is a front view showing a state before the separator 12 is pulled out from the core 8, and Fig. 6 (b) is a side view of Fig. 6 (a). As shown in Figs. 6A and 6B, the separator winding 10 has a core 8 around which the separator 12 is wound. The separator 12 is not a fabric but a slit separator that is slit from the fabric as described above.

(core)

The core 8 has an outer cylindrical portion 81 and an inner cylindrical portion 82 and a plurality of ribs 83 (supporting members) and has the same function as the core u · l described above. A shaft hole (H) centered on the central axis (CA) of the core (8) is formed in the core (8).

The outer cylindrical portion 81 is a cylindrical member for winding the separator 12 around the outer peripheral surface thereof. The inner cylindrical portion 82 is a cylindrical member that is disposed inside the outer cylindrical portion 81 and surrounds the shaft hole H. The ribs 83 are eight support members which support the space between the outer cylindrical portion 81 and the inner cylindrical portion 82 and are spaced apart from each other. The core 8 is formed with a through hole h surrounded by the outer cylindrical portion 81 and the inner cylindrical portion 82 and the rib 83. [

The material of the core 8 includes ABS resin. However, the material of the core used in the embodiment of the present invention is not limited to this. As the material of the core according to the embodiment of the present invention, besides ABS resin, a resin such as a polyethylene resin, a polypropylene resin, a polystyrene resin, and a vinyl chloride resin may be included. It is preferable that the material of the core is not metal, paper, or fluorine resin. The separator winding 10 having the separator 12 wound around the core 8 is subjected to stress caused by winding and winding the separator 12 so that deformation of the core 8 due to stress due to winding- It is preferable that the core 8 has rigidity. The material of the core according to the embodiment of the present invention is not limited to the above description and may be any material as long as it is a material having such rigidity.

The length of the core 8 in the direction along the central axis CA is defined as the width L ₁ of the core 8 and the outer diameter of the outer cylindrical portion 81 on the plane perpendicular to the center axis CA of the core 8, (The diameter of the shaft hole H) of the inner cylindrical portion 82 on the surface orthogonal to the central axis CA of the core 8 is smaller than the outer diameter of the core 8 ) respectively to the inside diameter (φ _2), the. The width (L ₁ ), outer diameter and inner diameter (? ₂ ) of the core are not particularly limited. The width L ₁ of the core 8 included in the separator winding 10 is defined as the width of the separator winding 10.

(Separator)

The outer diameter of the wound separator 12 on the surface perpendicular to the central axis CA of the separator winding 10 is defined as the outer diameter? ₁ of the separator winding 10. The outer diameter ₁ of the separator winding 10 depends on the outer diameter of the core 8 and the length of the separator 12, but is not particularly limited.

&Lt; Configuration of cushioning material &

The sheet member in the present invention may be a cushioning material.

Fig. 7 is a schematic diagram showing the configuration of a cushioning material (plate-shaped member) 160 according to an embodiment of the present invention. 7 (a) is a front view, and Fig. 7 (b) is a side view of Fig. 7 (a).

The cushioning material 160 is flexible, easily deformed by an external force, and further has a self-supporting property. For example, the cushioning material 160 is a porous material of a sponge-like resin such as foamed urethane. The cushioning material 160 is, for example, a flat circular ring shape and has a shaft hole 162 around the central axis 161 of the cushioning material 160. The length of the cushioning material 160 in the direction along the central axis 161 is set to be smaller than the thickness L ₂ of the cushioning material 160 and the outer diameter of the cushioning material 160 in the plane perpendicular to the central axis 161, ) outer diameter, respectively a (φ _3), inner diameter in the plane orthogonal to the central axis 161 of the buffer material (shaft hole 162, the inner diameter of the buffer material 160, the diameter) of the (φ _4),. of The thickness L ₂ , outer diameter? ₃ and inner diameter? ₄ of the cushioning material 160 are not particularly limited. In this embodiment, for the sake of simplicity, the shape of the cushioning material 160 is a flat circular ring shape, but the shape of the cushioning material according to one embodiment of the present invention is not limited to this. The shape of the cushioning material may be undulations or irregularities on the surface or one or both of the inner shape and the outer shape of the cushioning material may be a shape other than a circular shape and the center of the inner periphery and the outer periphery of the cushioning material may be different from each other.

Because the cushioning material 160 is flexible, the assembled roll assembly absorbs the impacts of vibration and impact of the assembled separator winding 10 when the attitude is changed or transported. Thus, the cushioning material 160 can protect the separator 12 wound on the separator winding body 10 from vibration and collision.

The above dimensions (the thickness L ₂ , the outer diameter ₃ and the inner diameter ₄ of the cushioning material 160) are dimensions in a state where the cushioning material 160 is not deformed by an external force. Specifically, it is a dimension measured with the cushioning material 160 horizontally arranged on a flat horizontal surface so that the central axis 161 is parallel to the gravitational direction. In this specification, unless otherwise specified, each dimension of each member is a dimension in a state where each member is not deformed by an external force.

The thickness L ₂ of the cushioning material 160 is preferably a thickness capable of absorbing vibration during transportation so as to protect the side surface of the separator winding body 10. The thickness L ₂ of the cushioning material 160 is preferably such that the thickness of the cushioning material 160 can absorb the impact of the impact due to vibration so as to protect the side surface of the separator winding body 10.

The outer diameter ₃ of the cushioning material 160 is preferably larger than the outer diameter ₁ of the separator winding 10 so that the entire side surface of the separator winding body 10 can be protected. The inner diameter ₄ of the cushioning material 160 is preferably slightly larger than the outer diameter ₅ of the core material 150 so that the core 150 to be described later can easily pass through the cushioning material 160. [

<Heart>

Fig. 8 is a schematic view showing the structure of the core material 150 according to the embodiment of the present invention, wherein (a) is a front view and (b) is a side view of (a).

The material of the core member 150 may be any material that can support the weight of the core member 150 that is inserted therein (the total weight of the separator winding member 10 and the cushioning member 160 inserted into the core member 150). The material of the core material 150 is, for example, a hard resin, but is not limited thereto. The above-described weight is, for example, the sum of the weights of the four separator windings 10 and the five cushioning materials 160. The core material 150 may be made of resin such as ABS resin, polyethylene resin, polypropylene resin, polystyrene resin, and vinyl chloride resin, or may be paper.

The core member 150 is a cylindrical pipe and has a shaft hole 152 around the central axis 151 of the core member 150. The length of the core member 150 in the direction along the central axis 151 is set to be smaller than the length L ₃ of the core member 150 and the outer diameter of the core member 150 in the plane perpendicular to the central axis 151 of the core member 150 ) and the outer diameter (φ _5), inner diameter in the plane orthogonal to the central axis 151 of the core member (shaft hole 152, the diameter of) each with an inner diameter (φ _6), of the core 150. the in The thickness (L ₃ ), outer diameter (? ₅ ) and inner diameter (? ₆ ) of the core (150) are not particularly limited. In the present embodiment, for the sake of simplicity, the core member 150 has a cylindrical shape, but the shape of the core member according to one aspect of the present invention is not limited thereto. The shape of the core may be an angled shape, or the inner shape and the outer shape of the core may be different from each other. It is preferable that the outer circumferential shape of the core material is a shape corresponding to the inner circumferential shape of the inner cylindrical portion of the core used in the embodiment of the present invention (the shape of the shaft hole).

The length L ₃ of the core member 150 is set such that when the core member 150 is inserted into the desired number of the separator winding 10 and the desired number of the cushioning members 160, The end of the core member 150 should not protrude from the cushioning member 160. In other words, the length L ₃ of the core member 150 is set so that the sum of the width L ₁ of the separator winding body 10 to be inserted and the thickness L ₂ of the cushioning member 160 to be inserted Shorter than the sum. For example, when four separator windings 10 and five cushioning materials 160 are alternately inserted into the core member 150, L ₃ &lt; 4L ₁ + 5L ₂ .

The core member 150 is inserted into the aforementioned separator winding body 10 so as to pass through the shaft hole H. [ The core member 150 is inserted into the cushioning material 160 so as to pass through the shaft hole 162. Therefore, the outer diameter (? ₅ ) of the core member (150) is smaller than the diameter (? ₂ ) of the shaft hole (H) and the diameter (? ₄ ) of the shaft hole (162). The Conversely, the outer diameter of the core member (150) (φ _5), the outer diameter of than the diameter, and when (φ ₂₎ to form a shaft hole (H) in the core (8) so that the larger core member (150) (φ ₅₎ The shaft hole 162 may be formed in the cushioning material 160 so that the diameter? ₄ becomes larger. It is preferable that the outer diameter φ ₅ of the core member 150 is close to the inner diameter φ ₂ of the core 8 so that the inserted separator winding body 10 is stabilized.

The inner diameter? ₆ of the core member 150 may be small as long as the core member 150 can support weighting by an object passing through the core member 150 itself. In order to reduce the weight, the core member 150 may be thinned or lightened.

The shaft hole 152 of the core member 150 is in contact with the convex portion 142 of the protector 140 which will be described later. For this reason, the wall surface of the shaft hole 152 is formed smoothly so that wear debris is less likely to be generated even if they are mutually stuck.

<Protector>

The first side plate and the second side plate in the present invention may be a protector for protecting the separator winding.

9A is a front view, FIG. 9B is a rear view of FIG. 9A, FIG. 9C is a front view of the protector (first side plate and second side plate) Is a side view of (a).

The protector 140 is made of a material having a structure in which the core 150 supporting the above weight (the total weight of the separator winding 10 and the cushioning material 160 inserted into the core 150) For example, a hard resin. The material of the protector 140 may include, for example, a resin such as ABS resin, polyethylene resin, polypropylene resin, polystyrene resin, vinyl chloride resin, or the like.

The protector 140 is provided with convex portions (first convex portion and second convex portion) 142 on the inner side surfaces of the base portions (first base portion and second base portion) 141, A plurality of notches 145 (first engaging portions and second engaging portions) 143 are formed on the outer edge of the base 141, and a plurality of notches 145 And a shaft hole 146 about the central axis 144.

(donate)

The base 141 is a substantially octagonal plate-like shape. When the protector 140 is mounted on the core member 150, the main surface on the side closer to the separator winding body 10 is the inner surface and the main surface on the side away from the separator winding body 10 is the outer surface Side. The distance between the opposite sides of the base 141 on the plane orthogonal to the central axis 144 is defined as the outside dimension? ₇ of the base 141.

The shape of the base 141 is not limited to this, and may be curved or asymmetric, or may be another substantially regular polygonal shape such as a substantially rectangular shape or a substantially hexagonal shape.

The thickness of the base 141 may be such that the core 150 supporting the weight described above can be suspended. In order to reduce the weight, the base 141 may be thinned or lightened.

The outer dimension phi ₇ of the base portion 141 is set to be smaller than the outer dimension phi of the base portion 141 so that the core member 150 inserted into the separator wound body 10 can be suspended so that the separator 12 is not grounded. ₇ ) is preferably larger than the outer diameter (? ₁ ) of the separator winding body (10). In addition, the outer dimensions of the separator 12 and the buffer material 160 is not grounded separator winding 10 and so that the core member 150 a inserted through the cushioning material 160 to the suspension, the base (141) (φ ₇ Is preferably larger than the outer diameter (? ₁ ) of the separator winding body (10) and the outer diameter (? ₃ ) of the cushioning material (160).

(Convex portion)

The convex portion 142 protrudes from the inner side surface of the base portion 141 about the central axis 144 of the base portion 141. [ The length from the inner side surface of the base portion 141 in the direction along the central axis 144 of the convex portion 142 is set to the height L ₄ (L ₅ ) of the convex portion 142, And the outer diameter of the convex portion 142 on the surface orthogonal to the convex portion 144 is phi ₈ .

The height L ₄ of the convex portion 142 is set such that even when the core member 150 is shifted to a desired number of the cushioning members 10 and the desired number of the cushioning members 160, It is only necessary to fit the part 142 into the shaft hole 152 of the core member 150. The height L ₄ of the convex portion 142 is a sum of the sum of the width L ₁ of the inserted separator winding body 10 and the thickness L ₂ of the cushioning material 160 inserted therethrough (L ₃ ) of the core member 150. The length L ₃ of the core member 150 may be smaller than the length L ₃ of the core member 150. In other words, the sum of the length L ₃ of the core member 150 and the height L ₄ of the convex portion 142 is equal to the sum of the width L ₁ of the separator winding body 10 inserted therethrough It is greater than the sum of the total of the thickness (L ₂₎ of the cushioning material 160. the For example, when four separator windings 10 and five cushioning materials 160 are alternately inserted into the core member 150, L ₃ + L ₄ <4L ₁ + 5L ₂ .

Of course, in order to fit the protector 140 at both ends of the core member 150, when the convex portion 142 is inserted into one end of the core member 150, another protector (not shown) The height L ₄ of the convex portion 142 needs to be smaller than the length L ₃ of the core member 150 so that the convex portion 140 of the core member 142 can be inserted. Further, the inner surface of the protector _{(140),, 2L 4 <} 4L 1 + ₂ must be a 5L of buffer material 160 and to press the separator winding 10 is inserted. In addition, when the protector 140 is sandwiched between only one end of the core member 150, it does not protrude from the inserted cushioning member 160 and the separator winding member 10, so that L ₄ <4L ₁ + 5L ₂ .

The outer diameter ₈ of the convex portion 142 may be as long as the convex portion 142 can be engaged with the core 150. [ Therefore, the outer diameter ₈ of the convex portion 142 may be equal to or smaller than the inner diameter ₆ of the core member 150. The outer diameter ₈ of the convex portion 142 is smaller than the inner diameter of the core member 150 so that resistance can be generated between the convex portion 142 of the protector 140 and the shaft hole 152 of the core member 150 ₆ ).

In this embodiment, the convex portion 142 is formed integrally with the base portion 141. However, the convex portion 142 is not limited to this but may be formed separately from the base portion 141 and assembled to be integral with each other. In the present embodiment, the convex portion 142 is a cylindrical component, but may be composed of a plurality of components. In this embodiment, for the sake of simplicity, the shape of the convex portion 142 is a cylindrical shape, but the shape of the convex portion of the protector according to one aspect of the present invention is not limited to this. The shape of the convex portion may be a shape that can be inserted into the shaft yoke of the core member, and preferably has a shape corresponding to the shape of the shaft yoke of the core member.

The convex portion 142 comes into contact with the shaft hole 152 of the core member 150, as described above. Therefore, the side surface of the convex portion 142 is formed smoothly so that wear debris is less likely to be generated even when they are mutually stuck.

(Foot)

A plurality of foot portions 145 are formed on the outer peripheral portion of the outer surface of the base portion 141. In the present embodiment, the foot portions 145 are formed at the center portion at one side on eight sides of the substantially octagonal base portion 141. The present invention is not limited to this, and the foot portions 145 may be formed at eight corners of the substantially octagonal base portion 141, or may be arranged at different angles. In the present embodiment, the foot portion 145 is formed integrally with the base portion 141, but the present invention is not limited thereto. The foot portion 145 may be separately formed from the base portion 141 and assembled so as to be integral with each other.

(Notch groove)

The notch groove 143 is an engaging portion for engaging the coupling band with the protector 140 when the protector 140 sandwiched between both ends of the core material 150 is coupled by a coupling band. Since the fastening band is caught in the notch groove 143, the fastening band is not loosened after the fastening band and the protector 140 are engaged.

The distance between the groove bottoms of the notched grooves 143 that are formed on the opposite sides of the base portion 141 of the substantially octagonal shape is set to be an opposing interval? ₉ of the notched grooves 143, The opposing distance? ₉ of the notch grooves 143 should be larger than the outer diameter? ₁ of the separator winding 10 so as to be separated from the separator winding body 10 without being contacted.

The notch groove 143 is also a guide portion for guiding the binding band to be engaged at a proper position. Since the coupling band 143 is guided to the proper position for the coupling by the notch groove 143, the coupling band does not become loosened after coupling.

A plurality of notch grooves 143 are formed in the outer edge portion of the base portion 141. In the present embodiment, the notch groove 143 is formed so as to cut off the center portion at the side where the foot portion 145 is not formed at one of the eight sides of the substantially octagonal base portion 141 have. The engaging portion for engaging the binding band with the protector 140 may be a groove formed in the outer surface of the base portion 141 in an X-shape, or may be a projection portion or the like.

<Assembly process>

An example of the assembling process of the embodiment of the present invention will be described in order. In addition, in the description of the assembling process, "phase" means above the direction of gravity and "under" means below gravity direction unless otherwise specified.

10 is a schematic view showing an example of a process of assembling a roll assembly (assembly) 180 according to an embodiment of the present invention.

First, as shown in Fig. 10 (a), the protector 140 is horizontally disposed on a substantially flat horizontal surface and its outer surface is directed downward. Therefore, the protector 140 stands on a substantially horizontal plane by the feet 145 and faces the convex portion 142 upward. In addition, the central axis 144 (see Fig. 9) of the protector 140 is substantially vertical.

10 (b), the convex portion 142 of the protector 140 is inserted into the core member 150 (first inserting step), and the core member 150 is inserted into the center shaft 151, (See FIG. 8) to be approximately vertical. Specifically, the center core of the core member 150 is substantially aligned with the central axis of the protector 140 with one end of the core member 150 facing downward and the other end opposite to the one end upward, (142) is inserted into the shaft hole (152) at one end of the core (150). Thereby, one end of the core member 150 is engaged with the protector 140.

At this time, in order to stably stand the core member 150, it is preferable that the convex portion 142 is deeply inserted into the shaft hole 152. Therefore, the inner surface of the base 141 of the protector 140 is in contact with the end surface of the bottom end (one end) of the core material 150. It is preferable that the central axis 151 (see FIG. 8) of the core member 150 is substantially vertical in order to stably stand the core member 150.

Then, as shown in Fig. 10 (c), the core member 150 is inserted into the cushioning member 160 (insertion and passing step). Specifically, the central axis of the cushion member 160 is substantially aligned with the central axis of the core member 150 so that the core member 150 passes through the shaft hole of the cushion member 160, The cushioning material 160 is moved along the direction of the central axis (insertion direction) up to the lower end (the one end). Next, the core member 150 is inserted into the separator winding body 10 (insertion passing step). Concretely, the center shaft of the separator winding body 10 is substantially aligned with the center axis of the core member 150 so that the shaft member 150 of the separator winding 10 passes through the core member 150, The separator winding body 10 is moved along the direction of the central axis (insertion direction) up to the lower end. 10 (d), the core member 150 is inserted alternately into three additional cushion materials 160 and three additional separator windings 10, and finally, further, The core member 150 is inserted into one buffer member 160.

At this time, since the core member 150 is substantially vertical, the core member 150 can be smoothly inserted into the cushioning member 160 and the separator winding member 10 without resistance. In addition, since the center of gravity is always on the center axis of the core member 150, the center of gravity is stable, and the cushioning member 160 and the separator winding body 10 can be stably inserted. In addition, since the core member 150 is substantially vertical, the cushioning member 160 and the core 8 of the separator winding member 10 and the protector 140 can be easily stacked with no gap by gravity.

10 (e), another protector 140 is horizontally arranged on the uppermost cushioning material 160 with its outer side facing upward, and convex portions 142 are formed on the core material 150 (Second insertion step). Specifically, a protruding portion 142 of the protector 140 is inserted into the shaft hole 152 at the upper end of the core member 150 with the center axis of the protector 140 substantially aligned with the central axis of the core member 150 .

At this time, the total 4L ₁ of the widths L ₁ of the core 8 and the thickness L ₂ of the inserted five cushioning materials 160 of the four separator windings 10 inserted therethrough is 5L _2, a length of the core member 150 is inserted through (L ₃₎ and a height of the raised portion 142 of the protector 140 for insertion (L ₄₎ is, satisfies the inequality relation to equation (1).

L ₄ > 4L ₁ + 5L ₂ - L ₃ (> 0) ... ... ... (Equation 1)

Therefore, at least a part of the convex portion 142 can be always inserted into the shaft hole 152.

At this time, it is preferable that the end face of the upper end of the core member 150 does not protrude above the uppermost cushion material 160. In other words, the convex portion 142 is formed so that the distance between the inner surface of the lower protector 140 and the inner surface of the upper protector 140 is equal to or greater than the length L ₃ of the core member 150, (152). More preferably, the distance between the inner surface of the lower protector 140 and the inner surface of the upper protector 140 is larger than the length L ₃ of the core member 150. The weight of the protector 140 inserted into the upper end of the core member 150 and the pressure of inserting the protector 140 into the upper end of the core member 150 And is applied to the cushioning material 160 as an external force. Therefore, the condition of the cushioning material 160 deformed by an external force may satisfy the following relation (2).

4L ₁ + L _{2, sum, deformed} ≥ L ₃ ... ... ... (Equation 2)

L _{2, sum, and deformed} are the _distance between the inner peripheral portion of the cushioning material 160 in the _deformed state (near the shaft hole 162, between the cores 8, or between the core 8 and the protector 140) (The length in the direction along the central axis 161) of the base portion (the portion sandwiched by the center shaft 161).

The number of the separator winding bodies 10 inserted into the core member 150 is not limited to four and the number of the cushioning members 160 inserted into the core member 150 is not limited to five. (3) is satisfied, where m (m: natural number) and n (n: natural number) are the numbers of the cushioning materials 160 to be inserted therethrough You. It is also preferable that one cushioning material is disposed in each of the relationship of n = m + 1, that is, between the protector 140 and the separator winding 10 and between the separator winding 10 .

L ₄ > mL ₁ + n L ₂ - L ₃ (> 0) ... ... ... (Equation 3)

Therefore, the number m of the separator winding 10 to be inserted, the width L _{1 of the} core of the separator winding 10 to be inserted and the number n of the cushioning material 160 passing therethrough and the thickness L ₂ ), the length L ₃ of the core and the height L _{4 of the} convex portion may be determined.

Thus, the two rollers 180 are formed by integrally assembling the two protectors 140, one core member 150, and five cushioning members 160.

The posture of the roll assembly 180 is changed from a linear posture in which the center axis of the core member 150 is vertical to a lying posture in which the center axis of the core member 150 is horizontal. Specifically, the orientation of the roll assembly is changed so that the center axis of the core 150 is horizontal so that the two protractors 140 do not fall off the core 150.

The root 141 of either protector 140 can be separated without touching the end face of the core 150 in the roll assembly 180 of the lying posture. In the standing posture, the cushioning material 160 is pressed and crushed by the load of the separator winding body 10 and the protector 140 above the cushioning material 160. On the other hand, in the lying position, no load is applied to the buffer material 160 from the outside. Therefore, the thickness of the cushioning material 160 is restored by being laid down. The protector 140 which is the lower side is pushed by the restoring buffer material 160 and moves a little so that the base portion 141 which has contacted with the end face of one end of the core material 150 is moved from the end face of one end of the core material 150 It can fall.

In the lying posture, only the outer edge portion of the protector 140 is grounded, and the core member 150 is suspended from both sides by the protector 140. Therefore, the cushioning material 160 and the separator winding body 10 are supported by the inserted core member 150 so as to float in the air.

10 (f), the binding band (band-like member) 170 is wound around the protector 140 once in X-shape once, wound and fixed (winding and fixing step). The protector 140 on both sides is wound around and fixed to the binding band 170 to bind the roll assembly 180.

At this time, it is preferable that the distance between the inner side surfaces of the protector 140 on both sides is greater than the length L ₃ of the core member 150. It is more preferable that the distance between the inner side surfaces of the protector 140 on both sides is greater than the length L ₃ of the core member 150. The tension of the binding band 170 transmitted through the protector 140 is applied to the buffer member 160 as an external force. Therefore, the condition of the cushioning material 160 deformed by the external force may satisfy the relation of (Expression 2).

4L ₁ + L _{2, sum, deformed} ≥ L ₃ ... ... ... (Equation 2)

Similarly to the case where the protector 140 is inserted into the upper end of the core member 150, L _{2, sum, and deformed} are the sum of the thicknesses of the inner peripheral portion of the cushioning material 160 in a _deformed state.

The binding band 170 is engaged with the notch groove 143 of the protector 140 so that the binding band 170 does not deviate from the roll assembly 180. The binding band 170 is bound to the roll assembly 180 so that no gap is formed between the separator winding 10 and the buffer material 160 or between the protector 140 and the buffer material 160. In other words, the distance between the inner surfaces of the protector 140 on both sides is larger than the sum 4L ₁ of the width of the core 8 of the inserted separator winding 10 and the thickness of the cushioning material 160 inserted therethrough The coupling band 170 is bound so that the coupling band 170 is not loosened so that the coupling band 170 is equal to or smaller than the sum of the total sum (5L ₂ )

The roll assembly 181, which is bound by the binding band 170, is difficult to disassemble and is stable because it is bundled. The protector 140 is not separated from the core 150 because the distance between the two protec- tors 140 is limited. A gap is not easily generated between the protector 140 and the cushioning material 160 and between the core 8 of the separator winding body 10 and the cushioning material 160. [ Therefore, there is no room for the separator winding body 10 to move with respect to each other, and the separator winding bodies 10 are hard to collide with each other. Further, the separator winding body 10 can not move with respect to the protector 140, so that the separator winding body 10 is hard to collide with the protector 140. Further, by cutting the binding band 170, the roll assembly 181 can be easily disassembled and the separator winding 10 can be used.

In the present embodiment, a PP band made of a polypropylene (PP) resin is used for the binding band 170, and the PP band is bonded by thermal bonding. The present invention is not limited to this, and another binding band may be used, or another binding method may be used. The method of hanging the binding band 170 is also not particularly limited.

&Lt; Configuration of Roll Assembly &gt;

The configuration of the roll assembly 180 assembled by the above-described assembling process will be described in order. The configuration of the roll assembly 181 that binds the roll assembly 180 with the binding band 170 is the same as that of the roll assembly 180 except for the binding band 170, Since it is a well-known technology, a description thereof will be omitted.

(Axial direction)

11 is a schematic view showing a sectional configuration of a roll assembly 180 according to an embodiment of the present invention, wherein (a) is a longitudinal sectional view and (b) is a transverse sectional view.

11 (a) shows a longitudinal section cut by a plane passing through the central axis of the core material 150. Fig.

The central axis of the core member 150 of the roll assembly 180 is located at a center axis of the separator winding 10 and the core 8 and a center axis of the cushioning member 160, (144) are approximately coincident.

The convex portion 142 of the protector 140 is inserted into the shaft hole 152 of the core member 150 so as to satisfy the unequal relationship of (Expression 1). The convex portion 142 of the protector 140 on both sides is inserted into the shaft hole 152 of the core member 150 even if the core member 150 is shaken due to vibrations during transportation or the like. Therefore, the core member 150 is not removed from the protector 140.

L ₄ > 4L ₁ + 5L ₂ - L ₃ (> 0) ... ... ... (Equation 1)

L ₄ > mL ₁ + n L ₂ - L ₃ (> 0) ... ... ... (Equation 3)

More broadly, when the number of the separator winding bodies 10 to be inserted is m and the number of the cushioning materials 160 to be inserted is n, if the unequal relationship of (Equation 3) is satisfied, The core member 150 does not fall off. It is also preferable that one cushioning material is disposed in each of the relationship of n = m + 1, that is, between the protector 140 and the separator winding 10 and between the separator winding 10 . In addition, it is, should not 2L ₄ <mL ₁ + nL or ₂ so that the inner surface of the protector (140), to press the buffer material 160, and winding the separator (10) inserted, a matter of course.

When the outer diameter ₈ of the convex portion 142 is close to the inner diameter ₆ of the core member 150, the convex portion 142 of the protector 140 and the shaft hole 152 of the core member 150 A resistive force is generated so that the relative position does not change. The core member 150 does not fall off the protector 140 unless the force of the resistive force in the direction of pulling the convex portion 142 from the core member 150 is large. Therefore, it is easy to change or move the posture of the roll assembly during the assembly process. In addition, since the resistance is weak, it is preferable that the roll assembly 181 is coupled with the roll assembly 181 when vibrations such as during transportation are applied.

11A shows an ideal state in which the cushioning material 160 is not compressed. However, in the actual roll assembly 180, the cushioning material 160 may be slightly compressed. The restoring force for restoring the shape of the cushioning material 160 that is compressed when the cushioning material 160 is compressed is set such that the convex portion 142 of the protector 140 is not separated from the shaft hole 152 of the core material 150 The resistance generated between the protector 140 and the core member 150 is balanced.

11 (a) is shown as if the end face of the core member 150 is in contact with one of the protector 140 in order to facilitate the understanding of the unequal relationship of (Expression 1) 180, generally, both end faces of the core member 150 are separated from the protector 140, as described above.

The cushioning material 160 is sandwiched between the separator winding body 10 and the protector 140 and between the separator winding bodies 10. The vibration of the separator winding body 10 is absorbed by the cushioning material 160 and the shock of vibration and vibration is mitigated. Also, even when the separator winding body 10 is inclined, the cushioning material 160 does not directly collide with the separators 12, and the collision impact is alleviated. Thus, the cushioning material 160 protects the separator 12 wound on the separator winding body 10.

There is no clearance between the cushioning material 160 and the core 8 of the separator winding body 10 and the protector 140. Therefore, the separator winding body 10 can not move between the protators 140 on both sides. This prevents the separator winding 10 from colliding with each other or with the protector 140.

(Radial direction)

Fig. 11 (b) shows a cross section viewed from the direction of the arrow C-C in Fig. 11 (a).

The outside dimension φ ₇ of the base portion 141 of the protector 140 and the outside diameter φ ₃ of the cushioning material 160 are set so as to protect the separator 12 wound around the separator winding body 10, And the outer diameter ₁ of the separator winding 10 preferably satisfy the unequal relationship of the following expression (4).

φ ₇ > φ ₃ > φ ₁ (> 0) ... ... ... (Equation 4)

When forming the notch groove 143 in the outer edge of the protector 140, it is preferable that the opposed spacing? ₉ of the notch grooves 143 further satisfies the unequal relationship of the following expression (5).

φ ₇ > φ ₉ > φ ₃ > φ ₁ (> 0) ... ... ... (Equation 5)

The outer diameter ₅ of the core member 150 and the outer diameter of the core 8 as shown in the figure are used to insert the core material into the separator winding 10 so that the core material 150 passes through the shaft hole of the core 8. [ ) inside diameter (φ ₂₎ of preferably satisfies the relationship of the following equation (6).

? ₂ >? ₅ (> 0) ... ... ... (Equation 6)

Hereinafter, various modifications of the embodiment of the present invention will be described.

&Lt; Modification Example 1 &

The length L ₃ of the core member 150 is the sum of the sum of the width L ₁ of the core 8 of the inserted separator winding and the thickness L ₂ of the cushioning material 160 to be inserted It is preferable that the end portions of both ends of the core member 150 are close to each other in a range where they are separated without contacting the base portion 141 of the protector 140. [ When the core member 150 is long, the separator winding body 10 inserted and passed easily becomes stable. However, the core member 150 may be short.

Shortening of the core material 150 makes it easier to assemble the roll assemblies 180 and 181 such that the cross-section of the core 150 at both ends is spaced apart from the base 141 of the protector 140.

L _{1, sum} + L _{2, sum, deformed} > L ₃ (> 0) ... ... ... (Equation 7)

In other words, the sum L _{1, sum} of the respective widths of the cores 8 of the plurality of separator windings 10 to be inserted and the sum L _{1, sum} of the widths of the inner peripheral portions The sum L _{2, sum,} and thickness of the core and the length (L ₃ ) of the core member 150 passing therethrough can easily satisfy the unequal relationship of the above-mentioned (Equation 7).

Although the shortness of the core material 150 is not particularly limited, for example, the unequal relationship of the following (Eq. 8) may be satisfied.

L _{1, sum} > L ₃ (> 0) ... ... ... (Expression 8)

When the unequal relation of the equation (8) is satisfied, the unequal relationship of the equation (7) is satisfied. More specifically, four separator windings 10 having the separator 12 wound around the core 8 having a width L ₁ of 70 mm are inserted into the core member 150, and the thickness L ₂ The length L ₃ of the core member 150 may be 278 mm shorter than 280 mm (4 × 70 mm) when five cushioning materials 160 of 1 mm are inserted.

&Lt; Modification Example 2 &

The sheet member in the present invention may be a spacer.

The spacer may be sandwiched between the separator winding body 10 and the protector 140 and / or between the separator winding bodies 10 in place of the cushioning material 160 or in addition to the cushioning material 160. [ When the spacer is used together with the cushioning material 160, the cushioning material 160 may be integral with the spacer or may be separate.

The spacer is less likely to be deformed by an external force than the cushioning material 160. By interposing the spacers, the space between the separator winding body 10 and the protector 140 or between the separator winding bodies 10 is separated. By separating the gap as described above, even when the separator winding body 10 is tilted with respect to the core member 150 by vibration, for example, when the roll assembly 181 is transported, the separator winding body 10 It is possible to prevent the wound separator 12 from colliding with the protector 140 or the other separator winding 10. The cushioning material is inserted between the separator winding body 10 and the separator winding body 10 and the spacer is inserted between the protector 140 and the separator winding body 10 in the case where the cushioning material 160 and the spacer are used at the same time, (The end of the roll assembly 180). Spacers that are difficult to deform due to external force are disposed on the end of the roll assembly 180 and the cushioning material 160 that is easily deformed by external force is disposed between the separator rolls 10, The separator 12 can be protected from vibration and impact.

It goes without saying that the core member 150 may be short even when the spacers are interposed therebetween as in the above-described first modification.

&Lt; Modification 3 &

The cores 8 of the plurality of separator windings 10 inserted into the core member 150 may have different widths. Similarly, in the case of using a plurality of buffering members 160, the plurality of buffering members 160 to be inserted may have different thicknesses. When a plurality of spacers are used, . When the buffer material 160 and the spacer are used, the thickness of the buffer material 160 and the thickness of the spacer may be different from each other.

In this case, let L _{1, sum} be the _sum of the widths of the respective cores 8 of the plurality of separator windings to be inserted, and let L _{2, sum} be the _sum of thicknesses of the cushioning material 160 to be inserted and the spacers , The following equation (9) can be satisfied.

L ₄ > mL ₁ + n L ₂ - L ₃ (> 0) ... ... ... (Equation 3)

L ₄ > L _{1, sum} + L _{2, sum} - L ₃ (> 0) ... ... ... (Equation 9)

(Equation 9) is an equation in which mL ₁ and nL ₂ in (Equation 3) are replaced by L _{1, sum} , L _{2, and sum} , respectively.

In this case as well, it is a matter of course that the core member 150 may be short as in the above-described first modification. The inner surface of the protector 140 must be 2L ₄ <L _{1, sum} + L _{2, sum} so that the inserted cushioning material 160, the separator winding 10, and the spacer can be pressed. Of course.

<Modification 4>

12 is a schematic view showing a sectional configuration of a modified example of the roll assembly 180 according to the embodiment of the present invention.

In the assembling of the separator winding 10, the cushioning material 160 and the spacer are not essential components either. 12, the cushioning material 160 is not placed between the spacer portions, and the core material 150 is provided with the separator winding body 10, as shown in Fig. 12, unless it is necessary to protect the separator 12 wound around the separator winding body 10. [ (10) may be passed through.

When only m separator windings 10 are inserted into the core member 150, the unequal relationship of the following formula (10) may be satisfied.

L ₄ > mL ₁ + n L ₂ - L ₃ (> 0) ... ... ... (Equation 3)

L ₄ > mL ₁ - L ₃ (> 0) ... ... ... (Equation 10)

(Equation 10) is an equation in which n = 0 in (Equation 3).

Even in this case, if the unequal relationship of the following expression (11) is satisfied, the width of the core 8 of the plurality of separator windings 10 inserted into the core material 150, as in the above- Of course, may be different from each other.

L ₄ > L _{1, sum} - L ₃ (> 0) ... ... ... (Expression 11)

Needless to say, the core member 150 may be short as in the first modification. It is a matter of course that the inner surface of the protector 140 should be 2L ₄ <L _{1, sum} so that the inserted cushioning material 160 can be pressed.

&Lt; Modified Example 5 &

In the roll assembly 181, a stretch film may be used instead of the binding band 170 for binding the roll assembly 180. [ Since the stretch film is thin, it can be easily torn by a human hand without a mechanism such as scissors. Therefore, the roll assembly can be easily disassembled, and the assembled separator winding body 10 can be easily taken out.

Further, since the stretch film has elasticity, it is deformed along the shape of the protector 140 when it is wrapped around the roll assembly 180. Since the deformed stretch film is engaged with the protector 140, it is not necessary to form the engaging portion like the notch groove 143 in the protector 140. [

It goes without saying that, in the above-described modifications 1 to 4, a stretch film may be used instead of the binding band 170. [

&Lt; Modified Example 6 &

In the roll assembly 180, protector 140 of the same shape is inserted into both ends of core member 150, but protector of different shape may be used. For example, when the protector 140 is inserted into one end of the core member 150 and another protector having a convex portion protruding from the base at a height L ₅ is inserted into the other end, (12), in addition to the two unequal relations of Equation (9).

L ₄ > L _{1, sum} + L _{2, sum} - L ₃ (> 0) ... ... ... (Equation 9)

L ₅ > L _{1, sum} + L _{2, sum} - L ₃ (> 0) ... ... ... (Equation 9 ')

L ₄ + L ₅ <L _{1, sum} + L _{2, sum} ... ... ... (Expression 12)

(Equation 9 ') is an equation in which L ₄ in (Equation 9) is replaced by L ₅ . Since the height L ₅ of the convex portion of the other protector is shorter than the length L ₃ of the core 150 in the case where the two unequal relations of Equation 9 and Equation 12 are satisfied, The convex portion 142 of the protector 140 can be always inserted. Similarly, when the two unequal relations of (Expression 9 ') and (Expression 12) are satisfied, the height L ₄ of the convex portion 142 of the protector 140 is greater than the length L ₃ of the core 150 The convex portion of another protector can be always inserted into the other end of the core member 150. [

<Effect>

The height L ₄ of the convex portion 142 of the protector 140 is set to be smaller than the width L ₁ of the core 8 of the separator winding body 10 inserted into the core material 150, the total length (L ₃₎ from the sum of the (L _{1, sum)} and the sum (L _{2, sum)} of the thickness (L ₂₎ of the buffer material 160, inserted into the core 150, the core member 150 Is greater than the subtraction. At least a part of the convex portion 142 is not necessarily formed in the core member 150 even when the position of the core member 150 is shifted in the inside of the shaft hole of the inserted separator winding body 10 and the cushioning member 160. Therefore, Is inserted into the inside of the shaft hole (152).

Therefore, even if one protector 140 is inserted into one end of the core member 150 until the end face of the core member 150 comes into contact with the base portion 141 of the protector 140, the core member 150 The other protector 140 can be inserted into the other end of the protector 140. The protector 140 is engaged with the core 150 even when the position of the core 150 is shifted when the orientation of the roll assembly 180 is changed or when the roll assembly 181 is transported .

As described above, since the core member 150 is not detached from the protector 140, the roll assemblies 180 and 181 are structurally stable. Therefore, it is possible to prevent the separator winding body 10 from colliding with each other due to jolts and vibrations.

The protector 140 of the protector 140 is inserted into one end of the core member 150 and the other end of the protector 140 opposite to the other end of the core member 150, do. Therefore, the core member 150 supporting the inserted separator winding 10 can be suspended from both sides by the protector 140. [ As described above, since the space can be formed on the outer periphery of the separator winding body 10, the wound separator 12 can be protected.

According to the above-described configuration, the separator winding body 10 and the cushioning material 160 are inserted into the core material 150 from the top to the bottom in the direction of gravity. The separator winding body 10 and the cushioning material 160 can be easily separated from the core 8 of the separator winding 10 and the cushioning material 160 so that a gap is not formed between the core 8 of the separator winding 10 and the cushioning material 160. [ .

The length L ₃ of the core member 150 is equal to the sum L ₁ of the widths L ₁ of the cores 8 of the separator winding 10 inserted into the core member 150 _{, sum)} and the sum of the thickness (L ₂₎ of the buffer material 160, inserted into the core member (150) (L _2, is less than the sum of the _sum). Therefore, both end surfaces of the core member 150 can be separated without contacting the inner surface of the base portion 141 of the protector 140. [

In order to separate as described above, the sum (L _{2, sum, deformed} ) of the thicknesses of the cushioning material 160 inserted into the core member 150 deformed by the external force _{and the sum} 10) the need to assemble the sum (L _1, the length (L _3), the roll assembly (180, 181 to be larger than the sum, the core 150 of the _sum)) of the width (L ₁₎ of the core (8) have.

When a plurality of members are made of a hard material which are mutually bristle to each other, wear debris easily occurs from the contact surfaces of the respective members. Therefore, it is preferable that the surface of the core member 150 and the protector 140 are both made of a hard material so that the surface of the core member 150 and the base 141 of the protector 140 It is preferable that the inner surface is spaced apart.

Further, the core member 150 is often formed by cutting a material on a long pipe to a length L ₃ . If the cross section of the core member 150 is a cut surface as described above, the cut surface is rough, and the core member 150 is hard, so that the cross section of the core member 150 interferes with another hard surface, It is particularly likely to cause wear debris from the surface. In addition, since the other hard surfaces of the core member 150 are damaged by the cross-section of the core member 150, wear debris easily occurs on the other surfaces that are struck together. It is therefore particularly preferable that both end faces of the core member 150 do not contact the base portion 141 of the protector 140. [

Since the end face of the core member 150 is not contacted with the protector 140 by the contact, the wear debris hardly occurs. In the manufacturing process of the battery, the intrusion of the gin is fatal. Therefore, it is very important that the separator 12, which is a member for a battery, is difficult to generate debris from the roll assemblies 180, 181. Therefore, the above-described structure, which is difficult to generate true wear debris, is suitable for assembling, storing and transporting the separator winding 10.

11, the protector 140 is inserted into the core member 150 such that the convex portion 142 of the protector 140 is inserted into the shaft hole 152 of the core member 150. As shown in Fig. The wall surface of the shaft hole 152 of the core member 150 is in contact with the side surface of the convex portion 142. [ However, the wall surface of the shaft hole 152 of the core member 150 and the side surface of the convex portion 142 are smooth, so that it is difficult for debris to be generated even if they are struck to each other.

According to the above configuration, as shown in Fig. 11A, the cushioning material 160 contacts the base 141 of the protector 140. As shown in Fig. However, since the cushioning material 160 is not hard, the cushioning material 160 and the protector 140 are hard to cause wear debris even when they are mutually stitched together. In the manufacturing process of the battery, the intrusion of the gin is fatal. For this reason, it is very important that the separator 12, which is a member for a battery, is difficult to generate wear debris from the roll assemblies 180, 181. Therefore, the above-described configuration, which is difficult to generate true wear debris, is suitable for assembling, storing and transporting the separator winding 10.

According to the above arrangement, the separator winding body 10 and the cushioning material 160 are inserted into the core member 150 alternately. By inserting them alternately, one cushioning material 160 is always inserted between the separator winding bodies 10. The minimum number of cushioning materials (160) can mitigate or prevent collision of the separator winding bodies (10). Likewise, in the case of using spacers, it is also preferable that the separator winding body 10 and the spacer are alternately inserted into the core member 150.

The cushioning material 160 is inserted into the core material 150 at the beginning and at the end in the process of inserting the separator winding 10 and the cushioning material 160 into the core material 150. Therefore, the cushioning material 160 necessarily fits between the protector 140 and the separator winding. The cushioning material 160 can mitigate or prevent collision of the separator winding 10 with the protector 140. [ Similarly, when the spacers are used, it is preferable that the spacers are inserted into the core member 150 at the beginning and the end.

The protector 140 engaged with one end of the core member 150 is the same as the protector 140 engaged with the other end of the core member 150. [ Therefore, the number of members constituting the roll assemblies 180, 181 can be suppressed, and the inventory cost can be suppressed. Further, when the roll assemblies 180 and 181 are disassembled, the roll assemblies 180 and 181 can be easily disassembled because they can be removed from either of the two protec- tors 140. [

The present invention is not limited to the above-described embodiments, and various modifications may be made within the scope of the claims, and embodiments obtained by appropriately combining the technical means disclosed in the different embodiments may also be applied to the technical scope of the present invention .

〔supplement〕

A method of manufacturing an assembly according to an embodiment of the present invention is characterized in that a length of a first convex portion projecting from a first base portion of a first side plate of the first side plate is L ₄ and a core is wound on a core- A first inserting step of inserting the first convex portion having L ₃ &gt; L ₄ into one end of the core material when the length of the core material in the inserting direction when passing through is L _3; of, one, or the length of the sum of a plurality of said winding to L _{1, sum,} and when the length of the sum of the one or a plurality of the plate-shaped member in the L _{2, sum} according _{to, L 3 + L 4> L} 1 _{, sum} + L _{2, and sum} &gt; L ₃ , and inserting and passing the core member through one or a plurality of the rolled members and one or a plurality of the plate members.

Another method of manufacturing an assembly according to an aspect of the present invention is characterized in that the length of the first convex portion projecting from the first base portion of the plate side of the first side plate is L ₄ and the core A first inserting step of inserting the first convex portion having L ₃ &gt; L ₄ into one end of the core material when the length of the core material in the inserting direction when passing through is L _3; the winding of, one, or if a plurality of length the sum of the winding as L _{1, sum,} L ₃ + L _4> such that L _{1, sum>} L _3, 1 or more in the core material And an inserting step of inserting the inserting hole into the inserting hole.

According to the above two manufacturing methods, since the first convex portion is inserted into one end of the core member, the core member is difficult to fall off from the first side plate. Further, the other end opposite to the one end of the core member can be prevented from protruding from the insertion-passed winding member, or the inserted winding member and the sheet-like member. Therefore, the first base portion can be separated from the end face of one end of the core material. Therefore, since the cross section of the first base portion and the core member are not crossed each other, wear debris can be hardly generated.

In the production method of the assembly relating to an aspect of the present invention, when the second second projections length portion projecting from the second base portion of the plate of the side plate to _{L 5, L 1, sum +} L 2, sum - L 4> And a second inserting step of inserting the second convex portion into the other end opposite to the one end of the core so that L ₅ > L _{1, sum} + L _{2, and sum} - L ₃ .

In another manufacturing method of the assembly according to an aspect of the present invention, when the length of the second convex portion projecting from the second base portion of the plate-shaped second side plate is L ₅ , L _{1, sum} - L ₄ > L ₅ > L _{1 and sum} - L ₃ , and inserting the second convex portion into the other end opposite to the one end of the core material.

According to the above two manufacturing methods, the second base can be separated from the end face of the other end of the core. Therefore, since the cross section of the second base portion and the core member are not crossed each other, wear debris can be hardly generated. At least a part of the second convex portion can be always inserted into the other end of the core member even in the case where the position of the core member is biased in the inside of the insertion-passed winding member and the sheet member or inside the inserted winding member. This makes it difficult for the core member to fall off from the second side plate. In addition, since the first side plate is engaged with one end of the core member and the second side plate is engaged with the other end, the core material supporting the winding body can be suspended by the first and second side plates.

In the method of manufacturing an assembly according to an aspect of the present invention, it is preferable that the core member is inserted into the winding body and the plate-like member alternately in the insertion step. According to this method, one plate-like member can always be inserted between the windings. Therefore, collision between the winding body and the winding body can be prevented or mitigated by the minimum number of the plate members.

In the method of manufacturing an assembly according to an embodiment of the present invention, it is preferable that a plurality of the plate-like members are provided, and the core material is inserted into the plate-like member at first and last in the insertion step. According to this method, at least one plate member can be always inserted between the first side plate and the winding body, and between the second side plate and the winding body. Therefore, the collision between the winding body and the first side plate and the collision between the winding body and the second side plate can be prevented or mitigated.

In the method of manufacturing an assembly according to one aspect of the present invention, it is preferable that at least one of the plate members is a spacer that is not deformed by an external force. When spacers are used, the interval between the first side plate and the winding body, between the second side plate and the winding body, between the winding bodies, and between the spacer and the second side plate can be set apart. Such a gap can prevent collision between the first side plate and the winding body, between the second side plate and the winding body, or between the winding bodies.

In the method of manufacturing an assembly according to an embodiment of the present invention, at least one of the plate members is a buffer member deformed by an external force, and L _{2, sum} represents a state in which the buffer member is not deformed by an external force The lengths of the first, second, In the case of using the cushioning material, it is possible to absorb the impact of the collision between the first side plate and the winding body, between the second side plate and the winding body, and between the winding bodies while the cushioning material is sandwiched. By such absorption, collision between the first side plate and the winding body, between the second side plate and the winding body, or between the winding bodies can be alleviated.

In the method of manufacturing an assembly according to the present invention, when the cushioning material is used, the sum of the lengths of the plate-like members in a state in which the cushioning material is deformed by an external force in the insertion direction is L _2, , It is preferable that the second convex portion is inserted into the other end of the core material so that L _{1, sum} + L _{2, sum, and deformed} ? L ₃ in the second inserting step. According to the above method, the distance between the face of the first base portion protruding from the first convex portion and the face of the second base portion protruding from the second convex portion is equal to or larger than the length L _{3 of the} core material. For this reason, the cross-sections of both ends of the core member are difficult to be stuck to the first and second base portions. As a result, wear debris hardly occurs from the end faces of both ends of the core material and the first and second base portions.

In the method of manufacturing an assembly according to an aspect of the present invention, it is preferable that, in the insertion step, the insertion direction is the direction of gravity. According to the above method, the inserted wound body and the sheet-like member or the wound body inserted therein are stacked in the direction of gravity. By gravity, it is possible to easily laminate the core so as not to create a gap between the core and the sheet-like member of the winding body, between the cores of the winding body, and between the sheet-like members. Thereby, in the assembled assembly, it is possible to eliminate the space in which the winding body moves. Therefore, it is possible to prevent the winding bodies from colliding with each other or with the first or second side plate.

In the method of manufacturing an assembly according to one aspect of the present invention, after the first inserting step, the inserting step, and the second inserting step, the first side plate and the second side plate are bonded to each other with a belt- And a winding-fixing step of winding and fixing. According to this method, since the distance between the first and second side plates is limited, it is possible to prevent the core material from falling off from the first or second side plate. This makes it possible to prevent a gap from being formed between the core and the plate-like member of the winding body, between the cores of the winding body, or between the plate-like members.

In the case of using a cushioning material, in the method of manufacturing an assembly according to the present invention, after the first inserting step, the inserting step and the second inserting step, the first side plate and the second side plate are bonded to each other, It is preferable to include a winding and fixing step of winding and fixing the strip-like member so that L _{1, sum} + L _{2, sum, and deformed} ? L ₃ . According to this method, since the distance between the first and second side plates is limited, it is possible to prevent the core material from falling off from the first or second side plate. This makes it possible to prevent a gap from being formed between the core and the plate-like member of the winding body, between the cores of the winding body, or between the plate-like members. According to the above method, the distance between the face of the first base portion protruding from the first convex portion and the face of the second base portion protruding from the second convex portion is greater than the length L _{3 of the} core material. For this reason, the cross-sections of both ends of the core member are difficult to be stuck to the first and second base portions. This makes it difficult for wear debris to be generated from both end faces of the core member and the first and second base portions.

In the method of manufacturing an assembly according to one aspect of the present invention, in the winding and fixing step, the belt-like member is attached to the first engaging portion of the first side plate and the second engaging portion of the second side plate It is preferable to engage with the engaging portion. According to this method, since the belt-like member is engaged with the first and second engagement portions, the belt-like member is difficult to escape from the first and second side plates. In addition, when the first and second engaging portions also serve as an induction portion for guiding the belt-like member to a proper position, the belt-like member can be easily wound and fixed so as not to be loosened.

In the method of manufacturing an assembly according to an embodiment of the present invention, it is preferable that the belt-like member is a stretch film. According to the above method, since the stretch film is used, it can be easily torn by a human hand without a mechanism such as a scissors. Thereby, the assembly can be easily disassembled, and the assembled winding body can be easily taken out.

In the method of manufacturing an assembly according to one aspect of the present invention, it is preferable that the number of the winding bodies is plural. According to the above method, the winding body can be assembled into one assembly.

In the method for manufacturing an assembly according to the present invention, it is preferable that the film is a battery separator. The assembly according to the method for manufacturing an assembly according to the present invention is particularly suitable for storing and transporting a winding body wound with a battery separator, since it is hard to generate true wear debris.

The assembly relating to an embodiment of the present invention is characterized in that the length of the first convex portion projecting from the first base portion of the first side plate of the first side plate is L ₄ and the cores are inserted into the winding body and the plate- in the insertion direction of the case, when the length of the core member with L _3, L _3> L ₄ of the first convex portion is inserted into one end of the core material, in the insertion direction, one or a plurality If the length of the sum of the volume length sum of L _1, the _sum, and one or a plurality of the sheet members of the hoeche as L _{2, sum,} L ₃ + L _4> L _{1, sum} + L _{2, sum} > L ₃ , wherein one or a plurality of the winding members and one or a plurality of the plate members are inserted into the core member.

Another assembly according to an aspect of the present invention is characterized in that the length of the first convex portion projecting from the first base portion of the first side plate of the first side plate is L ₄ and the length of the first convex portion projecting from the center of the core in the insertion direction, when the length of the core member with L _3, L _3> L ₄ of the first convex portion of the can is inserted into one end of the core material, in the insertion direction, one or a plurality of the And the sum of the lengths of the winding bodies is L _{1, sum} , one or a plurality of the winding bodies are inserted into the core material so that L ₃ + L ₄ > L _{1 and sum} > L ₃ .

According to the above two configurations, since the first convex portion is inserted into one end of the core member, the core member is difficult to fall off from the first side plate. In addition, the other end opposite to the one end of the core can be prevented from protruding from the inserted winding, or from the inserted winding and the sheet-like member. Therefore, the first base portion can be separated from the end face of one end of the core material. Therefore, since the cross section of the first base portion and the core member are not crossed each other, wear debris can be hardly generated.

Industrial availability

INDUSTRIAL APPLICABILITY The present invention can be used for assembling a winding body in which a film is wound around a core.

8, c, u · l: core
10: Separator winding (winding)
12: Separator (separator for film and battery)
140: Protector (first side plate, second side plate)
141: Donation (first base, second base)
142: convex portion (first convex portion, second convex portion)
143: fastening groove (fastening portion)
150: Core
160: cushioning material (plate-like member)
170: a binding band (band-like member)
180: roll assembly (assembly)
181: roll assembly (assembly)

Claims (19)

The length of the first convex portion projecting from the first base portion of the first side plate is L ₄ and the length of the first convex portion projecting from the first base plate in the insertion direction when the core member is inserted into the winding body and the plate- A first inserting step of inserting the first convex portion having L ₃ &gt; L ₄ into one end of the core material when the length of the core material is L ₃ ;
L _{1, sum} , and L _{2, sum} are the _sum of the lengths of one or a plurality of the plate members in the insertion direction, L ₃ + L for _{4> L 1, sum + L} 2, sum> L and is, one or a plurality of the winding to _3, one or a plurality of the plate-like member, characterized in that it comprises an insertion step of passing inserting the core material / RTI &gt; The length of the first projecting portion projecting from the first base portion of the first side plate is L ₄ and the length of the core material in the insertion direction when the core material is inserted into the winding body wound with the film on the core and when in the L _3, L _3> L ₄ of the first convex portion inserted into the first inserting the end of the process the core material,
In the insertion direction, one or when a plurality of length the sum of the winding as _{L 1, sum, L 3 +} L 4> L 1, sum> L 3 is such that, one or a plurality of the winding And an inserting step of inserting the core material through the inserting step. The method according to claim 1,
L _{1, sum} + L _{2, sum} - L ₄ > L ₅ > L _{1, sum} + L _{2, sum} - L where L ₅ is the length of the second convex portion protruding from the second base portion of the second side plate _{, And} a second inserting step of inserting the second convex portion into the other end opposite to the one end of the core member so that the second convex portion becomes the third convex portion. 3. The method of claim 2,
No. if the first length 2 of the convex portion protruding from the second base portion of the plate of the second side plate to _{L 5, L 1, sum -} L 4> L 5> L 1, sum - such that L _3, the second convex portion And a second inserting step of inserting the core member into the other end opposite to the one end of the core member. The method of claim 3,
Wherein the core member is inserted alternately into the winding body and the plate-like member in the insertion passing step. The method according to claim 3 or 5,
A plurality of said plate members,
Wherein the core member is passed through the plate member at the beginning and at the end in the insertion pass. The method according to claim 3 or 5,
Wherein at least one of the plate members is a spacer hard to be deformed by an external force. The method according to claim 3 or 5,
At least one of the plate members is a cushioning material which is easily deformed by an external force,
L _{2, sum} is the _sum of the lengths of the plate members in a state in which the buffer material is not deformed by an external force. 9. The method of claim 8,
When the sum of the lengths of the plate members in a state in which the cushioning member is deformed by an external force in the insertion direction is L _{2, sum, deformed} ,
_Wherein the second convex portion is inserted into the other end of the core so that L _{1, sum} + L _{2, sum, and deformed} ? L ₃ in the second inserting step. The method of claim 3,
And a winding fixation step of winding and fixing the first side plate and the second side plate to each other with a belt-shaped member after the first insertion step, the insertion step and the second insertion step &Lt; / RTI &gt; 5. The method of claim 4,
And a winding fixation step of winding and fixing the first side plate and the second side plate to each other with a belt-shaped member after the first insertion step, the insertion step and the second insertion step &Lt; / RTI &gt; 11. The method of claim 10,
At least one of the plate members is a cushioning material which is easily deformed by an external force,
L _{2, sum} is the _sum of the lengths of the plate members in a state in which the buffer material is not deformed by an external force,
When the sum of the lengths of the plate members in a state in which the cushioning member is deformed by an external force in the insertion direction is L _{2, sum, deformed} ,
Wherein the first side plate and the second side plate are wound and fixed by the belt-like member such that L _{1, sum} + L _{2, sum, and deformed} ≥ L ₃ in the winding and fixing step. Way. 13. The method according to any one of claims 10 to 12,
Wherein the belt-like member is engaged with the first engaging portion provided in the first side plate and the second engaging portion provided in the second side plate in the winding and fixing step. Way. 13. The method according to any one of claims 10 to 12,
Wherein the belt-like member is a stretch film. The method according to any one of claims 1 to 5, and 10 to 12,
Wherein the plurality of winding bodies is a plurality of winding bodies. The method according to any one of claims 1 to 5, and 10 to 12,
Wherein the film is a separator for a battery. 13. The method according to any one of claims 3 to 5, and 10 to 12,
Wherein in the inserting step, the inserting direction is a direction of gravity. The length of the first convex portion projecting from the first base portion of the first side plate is L ₄ and the length of the first convex portion projecting from the first base plate in the insertion direction when the core material is inserted into the winding body and the plate- When the length of the core is L ₃ , the first convex portion having L ₃ > L ₄ is inserted into one end of the core,
L _{1, sum} , and L _{2, sum} are the _sum of the lengths of one or a plurality of the plate members in the insertion direction, L ₃ + L ₄ > L _{1, sum} + L _{2, and sum} > L ₃ , wherein one or a plurality of the rolled members and one or a plurality of the plate members are inserted through the core member. The length of the first projecting portion projecting from the first base portion of the first side plate is L ₄ and the length of the core material in the insertion direction when the core material is inserted into the winding body wound with the film on the core Is L ₃ , the first convex portion having L ₃ > L ₄ is inserted into one end of the core member,
In the insertion direction, one or when a plurality of length the sum of the winding as _{L 1, sum, L 3 +} L 4> L 1, sum> L 3 is such that, one or a plurality of the winding Is inserted into the core material.

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