JP3708421B2 - Core for film, sheet, etc. - Google Patents

Description

[0001]
[Industrial application fields]
    The present invention relates to a core used for winding a relatively thin material such as a raw film or sheet.
[0002]
[Prior art]
  In order to wind up a relatively thin material such as a raw film or sheet, a tubular core is usually used. That is, this core is used for the work of winding the original film or sheet by rotating the core after fixing the end of a long original film or sheet to the core.Original fabricIt plays an important role in the winding and protection. And this original fabric film, a sheet | seat, etc. are conveyed to a predetermined | prescribed processing process with the state wound up by the said core.
[0003]
  However, the original film or sheet is very thin as in recent years (according to the latest technology, 0.5 μm film can be produced at the factory), cassette tape and video tape. For magnetic tapes that require a high degree of homogeneity and high quality, such as magnetic tape, when winding on a core before commercialization, it is appropriate to prevent wrinkling and tearing. Need to be careful. In addition, in the winding operation for the winding core, the winding core must be rotated at a considerably high speed in order to improve efficiency.
[0004]
  In the winding process especially in each manufacturing process of such a raw film or sheet, when these raw films or sheets become very delicate as described above, So, it is a close-up that there was almost no problem. The properties required for the core, including some of them, are listed below.
[0005]
  (1) This core is rotated at a high speed as described above.Original fabricIn order to improve the followability with respect to, it is better that the moment of inertia when rotating is small, and therefore the weight of the core is preferably light. (Lightweight)
[0006]
  (2) Since a large amount of raw film or sheet is wound on the core, the total weight after the winding is completed is considerable. It is done using it. In addition, when commercializing a raw film or sheet as a tape or the like, the winding core is rotated around another machine, and the transportation and installation work is also performed using the winding core. Therefore, a considerable strength is required for the core itself. (Strength)
[0007]
  (3) “Wrinkles” should not occur in the middle of winding the raw film or sheet on the core. When “wrinkles” occur, the “wrinkles” themselves not only lower the product value, but also the portions that are wound up next to the original film or sheet may be damaged. This is particularly remarkable when the raw film or sheet is thin. Therefore, in order to prevent such “wrinkles” from occurring, the surface of the core has complete smoothness, and the core itself is bent during rotation. Must not. (Smoothness)
[0008]
  (4) The temperature of the core may change considerably during the period from the initial stage to the final stage of winding the raw film or sheet on the core. This will be transportedOriginal fabricMay be heated, or may generate heat due to mechanical conditions such as high-speed rotation. However,Original fabricAs described above, “wrinkles” should not occur, but if the core expands or contracts due to heat, this also causes the generation of the above “wrinkles”. If this heat cannot be avoided, it is necessary that the core does not expand or contract by heat, that is, has a small thermal expansion coefficient. (Non-thermal expansion)
[0009]
  As a conventional core made of this kind of reinforced plastic, for example, there is one proposed in Japanese Patent Publication No. 59-45843. The metal roll proposed in this publication is
  “A roll body in which a carbon fiber reinforced resin layer is bonded to an inner peripheral surface of a metal roll shell in a state where the arrangement direction of the carbon fibers and the axial direction of the metal roll shell coincide with each other, and the roll body A metal roll comprising a metal header that is fitted to the end of the metal and is engaged with the rotation support shaft "
It is.
[0010]
  However, in this metal roll, a carbon resin fiber layer must be formed on the inner peripheral surface of the metal roll shell. However, simply thinking, another member is fixed to the inner peripheral surface of the tube material. This is extremely difficult. In addition, although this metal roll uses an extremely thin aluminum tube as its metal roll shell, it is considered that the strength cannot be secured so much when an aluminum tube is used as a base material. Furthermore, this metal roll must form a carbon resin fiber layer on the inner peripheral surface of the metal roll shell, but when heat is applied to the metal roll, stress is internally applied due to the difference between the materials of the two. This can cause the metal roll itself to bend. When this happens,Original fabricThis winding cannot be performed satisfactorily due to the occurrence of wrinkles. Therefore, in this metal roll, considerable consideration must be given to the material of the metal roll shell and the carbon resin fiber layer formed on the inner peripheral surface thereof.
[0011]
  JP-A-60-63137 discloses a method for producing a pipe made of carbon fiber reinforced plastics.
  “With regard to a method for producing a thick-walled carbon fiber reinforced plastic pipe having a configuration including 50% or more of low-angle windings of 30 degrees or less with respect to the axial direction of the pipe, the carbon fiber in which the amount of resin impregnated is controlled to 20 to 35 wt% Is wound with a desired composition ratio, and then wrapped with a heat-shrink tape on the surface and heat-cured to produce a carbon fiber reinforced plastic pipe manufacturing method "
It is.
[0012]
  In this carbon fiber reinforced plastic pipe, it is necessary to wrap a heat shrink tape on the surface of the pipe and heat cure it. When the heat shrink tape wrapped is heat cured There is no guarantee that the surface is completely smooth. Therefore, what is shown in the above (3) is not considered at all in this method.
[0013]
  Therefore, for example, in Japanese Utility Model Publication No. 5-15499,
  “A winding core comprising concentric and circular inner cylinders and outer cylinders having a circular cross section, and ribs connecting the inner cylinder and the outer cylinder, the reinforcing continuous fibers. Are arranged in the longitudinal direction of the core, and the content is 50 to 75% by volume, and is composed of continuous fiber reinforced fiber reinforced plastics, and the outer diameter of the outer cylinder is 100 to 200 mm, A “core for glass fiber cloth” is proposed in which at least the cross-winding portions have the same cross-sectional shape. This core is made of glass fiber cloth that is the object of winding, and it can secure enough strength to wind this, and it can be reduced in weight because it is hollow. It is believed that there is.
[0014]
  However, in the core shown in this Japanese Utility Model Publication No. 5-15499, as described in the fourth column of the publication, the 8th row and the subsequent lines, “a plurality of connecting the inner cylinder 2 and the outer cylinder 3”. The ribs 4 extend in parallel with the axis of the core 1 (see FIG. 11), and the video tape as described above is provided by the core. The following problems arise when trying to wind a very thin material such as an original film for use in large quantities. That is, if the rib 4 extends in parallel with the axis of the core 1 as shown in FIG. 11, deformation is likely to occur in a portion of the outer cylinder 3 that is not supported by the rib 4. is there. This is because the entire core 1 is manufactured by using “pultrusion molding using continuous fibers” with a fiber reinforced plastic as a whole (the fourth column, the 28th line and below), Since the “continuous fibers for reinforcement are arranged in the longitudinal direction of the core 1”, the core 1 is weak against the force applied in the radial direction by winding the raw film. is there.
[0015]
  In short, in the conventional technology of this kind of core,Original fabricIn the case where the object is to be wound, a solution that solves all the problems (1) to (4) described above has not been proposed yet.
[0016]
[Problems to be solved by the invention]
  The present invention has been made in view of the above-mentioned actual situation, and the problem to be solved is the conventional method for improving the quality such as thinning and precision of the raw film or sheet to be wound. The seed core has not been dealt with.
[0017]
  The object of the present invention is to provide a core that can be easily manufactured, which can achieve weight reduction, hardness, wear resistance, surface smoothing and reduction in thermal expansion coefficient. It is to provide.
[0018]
[Means for Solving the Problems]
  In order to solve the above problems, first, the means taken by the invention according to claim 1 will be described with reference to FIGS. 1 to 10 corresponding to the embodiments.
  "Raw materials for films, sheets, etc.A winding core used for winding, etc.
  Construct the outermost layer on the surfaceOriginal fabricA cylindrical core body 10 around which the wire is wound, a core material 20 which is stored in the core body 10 leaving a predetermined space R and serves as a rotating shaft during winding, and the core material 20 and the winding core A connecting plate 30 for connecting the core body 10 to each other;
The core body 10 includes a base material layer 12 formed by winding a prepreg-made glass cloth or carbon cloth, and fibers 13 formed of inorganic fibers such as glass and carbon, or synthetic fibers such as nylon. A first winding layer 14 wound at an inclination angle, and a second winding layer 15 formed by winding the fibers 13 at an intersection angle different from the intersection angle of the fibers 13 forming the first winding layer 14, and The coating layer 16As well as
  The surface of the core body 10 is a polished surface having a surface roughness of 1S to 1.5S,
  In addition, a support layer 40 made of a buffer material is formed in a predetermined space R between the core body 10 and the core material 20.And this support layer 40 was constituted by a honeycomb sheet 44.It is characterized byOriginal fabricWinding core for 100 "
It is.
[0019]
  Further, the means taken by the invention according to claim 2 is:
  "A core used for winding a film, sheet, etc.
  A cylindrical core body 10 that constitutes the outermost layer and on which the raw fabric is wound, and a core that is housed in the core body 10 leaving a predetermined space R and serves as a rotating shaft during winding. And a connecting plate 30 that connects the core member 20 and the core body 10 to each other,
The core body 10 includes a base material layer 12 formed by winding a prepreg-made glass cloth or carbon cloth, and fibers 13 formed of inorganic fibers such as glass and carbon, or synthetic fibers such as nylon. A first winding layer 14 wound at an inclination angle, and a second winding layer 15 formed by winding the fibers 13 at an intersection angle different from the intersection angle of the fibers 13 forming the first winding layer 14, and With the coating layer 16StructureAs well as
  The surface of the core body 10 is a polished surface having a surface roughness of 1S to 1.5S,
  In addition, a support layer 40 made of a buffer material is formed in a predetermined space R between the core body 10 and the core material 20, and the support layer 40 is configured by a hollow spherical body 42.Winding core 100 "
It is.
[0020]
  That is, these cores 100 are integrally connected to the core body 10 that is the outermost layer and the core material 20 that is housed inside the core body 10 via the predetermined space R by the connecting plates 30 located at both ends. In addition, the support layer 40 is positively formed in the entire predetermined space R. Although various materials can be applied as the cushioning material constituting the support layer 40, in order to achieve reliable support for the core material 20 of the core body 10 while reducing the weight of the core 100 as a whole. As shown in the examples,It is necessary to employ the hollow spherical body 42 or the honeycomb sheet 44. In addition, as a buffer material which comprises this support layer 40, the foamable resin 41 and the foamed resin disc 43 are also considered.
[0021]
[Effects of the Invention]
  When the present invention adopts the above-described means, the core 100 has the following action. First, in the core 100 according to the present invention, the core body 10 is formed of fiber and resin made of glass, carbon, or the like, and the inside of the core body 10 is interposed through a predetermined space R. The core material 20 is integrated by the connecting plates 30 and is light in the predetermined space R.Hollow spherical body 42 or honeycomb sheet 44Since the support layer 40 made of is formed, the entire weight is reduced as compared with the conventional one using only metal.
[0022]
  In particular, in the core 100 according to the following example, the core body 10 constituting the core 100 sequentially winds glass or carbon fiber 13 or the like on the upper surface of the base material layer 12, and the first winding layer 14 and Since the winding angle was changed with the second winding layer 15, the gap between each of the first winding layer 14 and the second winding layer 15 is completely filled, and the coating layer 16 made of resin is formed on the outermost layer. Since the surface is a polished surface, the outer shape is close to a perfect circle. Accordingly, since the core 100 has a uniform mass as a whole, even if it is rotated at a high speed, no “blur” occurs.
[0023]
  The core body 10 constituting the core 100 includes a base layer 12 formed of prepregized carbon cloth or the like or glass cloth, and fibers made of glass or carbon on the base layer 12. 13 is mainly composed of the first winding layer 14 and the second winding layer 15 formed by the base material layer 13, and thus the base layer 12, the first winding layer 14 and the second winding layer 15 as a whole have high strength. It has become. Moreover, since the carbon cloth or the like, the glass cloth, the fiber 13 made of glass or carbon, and the resin for adhering these, the thermal expansion coefficient of each layer of the core body 10 is low. Therefore, even if heat is applied or the temperature difference is high, no stress is generated in the inside.
[0024]
  In particular, in the core body 10, the coating layer 16 is formed as the outermost layer, and the surface thereof is a polished surface having a surface roughness of 1 to 1.5 S. It is excellent. When the surface of the coating layer 16 is polished to obtain a polished surface, the coating layer 16 has a sufficient thickness so that the internal second winding layer 15 and the like can be prevented from being exposed to the surface. Is.
[0025]
  Further, the core body 10 is integrated with the central core member 20 via the support layer 40 in the predetermined space R, and the support layer 40 is a cushioning material.Hollow spherical body 42 or CSince it is formed by the Nicam sheet 44, the core body 10 is firmly supported without being pinched or deformed with respect to the core material 20 which becomes a rotating shaft during winding or the like. As a result, even if the core 100 is rotated at high speed (several thousand rpm) or more, it should be wound on the surface thereof.Original fabricThere will be no wrinkles on the surface, partial elongation, or even damage. Also,Original fabricIs wound at a high speed, a so-called “clamping force” is applied to the core 100, but the core body 10 is made of a material having high strength and rigidity as described above, and Since the core body 10 is supported by the support layer 40 with respect to the core material 20, the core 100 is not deformed or bent at all.
[0026]
  In addition, when this core 100 is used many times, the coating layer 16 of the core body 10 is soiled and scratched. Therefore, the surface of the coating layer 16 is polished and regenerated. Even with respect to the force applied during the polishing operation of the coating layer 16, the core 100 having the above-described configuration has sufficient rigidity, so that the polishing operation can be performed sufficiently. In other words, by polishing the coating layer 16, the core 100 is highly reusable.
[0027]
  In particular, in the core 100 according to the following embodiment, the core material 20 constituting the core 100 is formed by the same method as that of the core body 10 described above. That is, as shown in FIG. 3, the core material 20 is formed by sequentially winding glass or carbon fibers 23 on the upper surface of the base material layer 22, and the winding angle between the first winding layer 24 and the second winding layer 25. Since the gap between the first winding layer 24 and the second winding layer 25 is completely filled, the outer shape is close to a perfect circle. Accordingly, since the core 100 has a uniform mass as a whole, even if it is rotated at a high speed, no “blur” occurs.
[0028]
【Example】
  Next, each example of the core 100 according to the present invention will be sequentially described with reference to the drawings while considering the manufacturing method.
[0029]
  FIG. 1 is a perspective view of a core 100 according to the present invention. As shown in FIG. 2, the core 100 according to the present embodiment mainly includes a base material layer 12, a first winding layer 14, and a first winding layer. A core body 10 composed of two winding layers 15 and a coating layer 16 is provided. FIG. 2 shows a state in which the cored bar 11 is still inserted for the sake of explanation. However, the molded cored bar 11 is removed after the core body 10 is completed. It is not a component of the core 100 concerning.
[0030]
  The base material layer 12 is constituted by winding a prepreg-made glass cloth or carbon cloth in two layers around a cored metal 11 serving as a central object. This is for smoothing the inner surface of the core body 10 and increasing the inner diameter accuracy. In this case, the cored bar 11 is of course close to a perfect circle, and a release agent is applied to the surface as necessary. The reason for applying the mold release agent is to facilitate the work when the molded core 11 is extracted from the core body 10 after completion.
[0031]
  In addition, in order to wind the base material layer 12 around the cored bar 11, the base material layer 12 is arranged so that the cloth is inclined with respect to the cored bar 11. The reason for this is to prevent the base material layer 12 from being loosened during the winding process when a first winding layer 14 (described later) is wound on the base material layer 12.
[0032]
  Further, in this embodiment, the number of turns of the base material layer 12 is two, but the number of turns is not limited to this, and may be one or three or more as described below. This base material layer 12 is intended to facilitate and ensure the subsequent winding operation of the first winding layer 14 and the second winding layer 15 rather than ensuring the strength after the core body 10 is completed. For example, when the diameter of the core body 10 itself is small, it may be performed once. On the other hand, when the diameter of the core body 10 is large, it may be wound three or more times. The core body 10 is manufactured with a final diameter of 25 mm to 400 mm and a length of about 300 mm to 6000 mm.
[0033]
  The first winding layer 14 is formed by sequentially winding (winding) the fibers 13 on the upper surface of the base material layer 12 that is rotated together with the molding core 11. The fibers 13 forming the first winding layer 14 are formed of inorganic fibers such as glass and carbon, or synthetic fibers such as nylon, and are prepreg before being wound. Of course, this winding is performed in a state where a predetermined tension is applied to each fiber 13. The inclination angle of the fibers 13 forming the first winding layer 14 with respect to the axis of the core 11 is 45 degrees in this embodiment. Winding is performed at a predetermined gap from one end side to the other end side of the forming core 11 at this inclination angle, and when it hits the other end, similar winding operations are sequentially performed at an opposite inclination angle (135 degrees). To go. The layer formed by such winding (one turn of the fiber 13 is one layer) was 6 layers in this example. Since the first winding layer 14 is a main part that gives out the strength and the like of the core 100, the number of layers formed by the fibers 13 may be larger, but the core 100 having a small diameter is formed. There are few.
[0034]
  The second winding layer 15 is basically formed by the same method as that for forming the first winding layer 14, but differs in the inclination angle and the number of windings with respect to the molded core 11. That is, the inclination angle of the fibers 13 forming the second winding layer 15 is 75 degrees in this embodiment, and the number of windings is three. At this inclination angle, similarly to the case of the first winding layer 14 described above, the molded cored bar 11 is wound with a predetermined gap from one end side to the other end side. The same winding operation is sequentially performed at an angle (105 degrees). The reason why the inclination angle of the fibers 13 is changed as compared with the case of the first winding layer 14 is that it is necessary to fill each gap of the fibers 13 forming the first winding layer 14. . That is, even if there is a gap for some reason other than the intersection of the fibers 13 forming the first winding layer 14, the fibers 13 having different inclination angles are wound from above. This is because the gap can be completely filled.
[0035]
  Further, the number of windings of the second winding layer 15 is three, and the number of windings of the second winding layer 15 is less than that in the case of the first winding layer 14. If the surface of the core 100 is made to be completely smooth, and if the surface of the core 100 is made smooth by the second winding layer 15, the number of times is smaller than in the present embodiment. It may be.
[0036]
  And in the core 100 which concerns on this invention, the coating layer 16 by the epoxy resin was given to the outermost layer, The thickness was 0.3-0.4. In addition, the surface of the coating layer 16 was mechanically polished to finish the surface at 1S to 1.5S to obtain a polished surface.
[0037]
  The core body 10 configured as described above has a center circularity of 6/100, which is more accurate than the conventional core circularity of 15/100, and has a Young's modulus of 1800 kgf / mm. . In addition, in the core 100 formed as described above, the molded core 11 is extracted before the surface finish, that is, after each layer and each coating is cured. The extraction of the molded core 11 can be performed even better if a mold release agent is applied to the molded core 11 and the end of each layer is locked to the locking member. The molding core 11 is forcibly pulled out by a machine. Thereafter, the surface of the core body 10 is finished, and unnecessary ends of the core body 10 are cut into a finished product.
[0038]
  The core material 20 accommodated in the core body 10 as described above via the predetermined space R.The figureAs shown in FIGS. 4 and 5, this is the axis of the core 100. It should be noted that the inside of the core body 10 is provided at both right and left ends in order to improve drainage in washing of the core 100 after completion or to easily remove dust adhered electrostatically. And a completely open cylinder.
[0039]
  In particular, in the core 100 according to this embodiment, the core material 20 constituting the core 100 sequentially winds glass or carbon fiber 23 or the like on the upper surface of the base material layer 22 as shown in FIG. Since the winding angle is changed between the first winding layer 24 and the second winding layer 25, the gap between each of the first winding layer 24 and the second winding layer 25 is completely filled. It is close.
[0040]
  The core member 20 must be fixed and integrated with respect to the core body 10, but this is performed by a connecting plate 30 formed in a donut-shaped disk shape. As shown, the fixed core member 20 is positioned at the axial center of the core body 10. That is, the core material 20 serves as a rotation axis when the winding core 100 is rotated, and has rigidity necessary for the rotation axis.
[0041]
  Various types of integration of the core material 20 with the core body 10 by the connecting plate 30 are employed. As shown in FIG. 5 and FIG. A flange portion that contacts the end surface of the main body 10 may be formed, and the core body 10 and the core material 20 may be integrated while covering the end surface of the core main body 10 with the flange portion. . In the connecting plate 30 shown in FIG. 5, the chucking plate 50 is integrated on the outer surface, and the chucking plate 50 is hung on a device that rotates the core 100. It is. Of course, as shown in FIG. 6B, for example, the connecting plate 30 has the core body 10 and the core member 20 of the same length and is integrated between them. In this case, the shape of each component of the core 100 can be simplified, and is particularly suitable for configuring the core 100 having a small diameter.
[0042]
  For the integration of the connecting plate 30 with respect to the core body 10 and the core material 20, for example, a screw is cut at a portion of the connecting plate 30 where the core body 10 and the core material 20 are fitted, and a screw corresponding to this is wound. The connection plate 30 may be formed by screwing the connecting plate 30 to the core body 10 and the core material 20 in the corresponding portions of the main body 10 and the core material 20. Further, the outer diameter of the fitting portion of the connecting plate 30 is made the same as that of the corresponding portion of the core body 10 and the core material 20, and it is integrated by applying an adhesive and forcibly fitting. May be. Of course, the above screw and adhesive may be used in combination.
[0043]
  Now, in the predetermined space R formed as described above, a support layer 40 made of a buffer material is formed.A hollow spherical body 42 as shown in FIG. 8 and a honeycomb sheet 44 as shown in FIG. 10 are employed. In addition, as this support layer 40,4 to 7 foaming treeFat 41, FIG. 9Foamed resin circle as shown inBoard 43 is suitableEach case will be described in order, taking into account the manufacturing method.
[0044]
  The support layer 40 shown in FIGS. 4 to 7 is formed of a foamable resin 41. The foamable resin 41 is attached to the chucking plate 50 shown in FIG. 4, for example, as shown in FIG. By placing the whole in front and ordering the material of the foamable resin 41 from below by using an injection nozzle using each mounting hole formed in the connecting plate 30 to fix the chucking plate 50 The predetermined space R is filled. The reason why the material of the foamable resin 41 is injected from the lower side is that the support layer 40 is completely filled in the predetermined space R by this, and the surplus material is added to the upper connecting plate 30. Since it comes out of the mounting hole, it may be removed.
[0045]
  The support layer 40 shown in FIG. 8 is formed by using a hollow sphere 42 made of a synthetic resin that has been provided at a low price recently. The hollow sphere 42 is formed as shown in FIG. What is necessary is just to throw in into the predetermined space R from the upper part of the semi-finished product stood. In order to prevent the hollow spheres 42 from moving in the predetermined space R, the surface of each hollow sphere 42 is coated with the above-described foamable resin 41 material or another adhesive. It is good to do. Since each hollow spherical body 42 is hollow, the weight of the entire core 100 after completion is not increased so much, and each hollow spherical body 42 is a spherical body. Can be supported with sufficient rigidity. And the formation of the support layer 40 by this hollow spherical body 42 can be formed very easily.
[0046]
  The foamable resin 41 and the hollow spherical body 42 are slightly higher in material cost. However, if the foamed resin disk 43 as shown in FIG. 9 is used, the support layer 40 can be formed at a lower cost. . That is, a large number of foamed resin discs 43, which are donut-shaped discs as shown in FIG. 9, are punched out from a foamable synthetic resin plate made of polypropylene or the like, and these are sequentially formed on the outer periphery of the core member 20. Fit with a gap. Of course, the diameter of the hole of each foamed resin disc 43 is the same as the outer diameter of the core member 20, and the outer diameter of each foamed resin disc 43 is the same as the inner diameter of the core body 10. If the core material 20 fitted with a large number of such foamed resin discs 43 is fitted into the core body 10, each foamed resin disc 43 constitutes the support layer 40. If an adhesive is applied to the surface of each foamed resin disk 43 before fitting into the core body 10, the core body 10 and the core material 20 are integrated with each foamed resin disk 43. It is possible to perform the conversion more reliably.
[0047]
  In the present embodiment, the support layer 40 to be formed in the predetermined space R is configured using a honeycomb sheet 44 as shown in FIG.The honeycomb sheet 44 is configured by partially connecting paper and metal strips to each other. When the honeycomb sheet 44 is expanded, a hexagonal column-shaped space as shown in FIG. Can be formed continuously, and is integrated by an adhesive while being wound around the surface of the core member 20. The core material 20 whose surface is covered with the honeycomb sheet 44 is fitted into the core body 10 so that each honeycomb sheet 44 constitutes the support layer 40. In addition, it is preferable to apply an adhesive to the surface side of each honeycomb sheet 44 so that each honeycomb sheet 44 adheres to the inner surface of the core body 10.
[0048]
  Thus, the support layer 40 is utilized using the honeycomb sheet 44.given that,As shown in FIG. 10B, a large number of partition walls made of paper or the like are continuously formed in the predetermined space R. Therefore, the core of the core body 10 is formed by these partition walls. Support for the material 20 is ensured.
[0049]
  In the core 100 of this embodiment, as shown in FIG. 1 and FIG. 2A, a mark 17 is formed at a predetermined position of the core body 10, and the mark 17 serves as a chucking plate. The chucking position by 50 is clearly indicated.Original fabricSince the weight of the core 100 wound with the wire is considerable, when it is hung on the support device or the rewinding device, the position of the core 100 must be determined to some extent from the beginning of the work. In many cases, the mark 17 is quite useful.
[0050]
【The invention's effect】
  As described in detail above, first, in the invention according to claim 1, as illustrated in the above embodiments,
  "Raw materials for films, sheets, etc.A winding core used for winding, etc.
  Construct the outermost layer on the surfaceOriginal fabricA cylindrical core body 10 around which the wire is wound, a core material 20 which is stored in the core body 10 leaving a predetermined space R and serves as a rotating shaft during winding, and the core material 20 and the winding core A connecting plate 30 for connecting the core body 10 to each other;
The core body 10 includes a base material layer 12 formed by winding a prepreg-made glass cloth or carbon cloth, and fibers 13 formed of inorganic fibers such as glass and carbon, or synthetic fibers such as nylon. A first winding layer 14 wound at an inclination angle, and a second winding layer 15 formed by winding the fibers 13 at an intersection angle different from the intersection angle of the fibers 13 forming the first winding layer 14, and The coating layer 16As well as
  The surface of the core body 10 is a polished surface having a surface roughness of 1S to 1.5S,
  In addition, a support layer 40 made of a buffer material is formed in a predetermined space R between the core body 10 and the core material 20.And this support layer 40 was constituted by a honeycomb sheet 44.It is characterized byOriginal fabricWinding core for 100 "
And means taken by the invention of claim 2Is
  "A core used for winding a film, sheet, etc.
  A cylindrical core body 10 that constitutes the outermost layer and on which the raw fabric is wound, and a core that is housed in the core body 10 leaving a predetermined space R and serves as a rotating shaft during winding. And a connecting plate 30 that connects the core member 20 and the core body 10 to each other,
The core body 10 is wound with a prepregized glass cloth or carbon cloth. A first winding layer 14 in which fibers 13 formed of inorganic fibers such as glass and carbon, or synthetic fibers such as nylon are wound at a predetermined inclination angle, and the first winding layer 14 A second winding layer 15 formed by winding the fiber 13 at an intersecting angle different from the intersecting angle of the fiber 13 forming the coating layer 16 and the coating layer 16.StructureAs well as
  The surface of the core body 10 is a polished surface having a surface roughness of 1S to 1.5S,
  In addition, a support layer 40 made of a buffer material is formed in a predetermined space R between the core body 10 and the core material 20, and the support layer 40 is configured by a hollow spherical body 42.Winding core 100 "
Has a structural feature, which makes it possible to reduce the weight, increase hardness, wear resistance, smooth the surface and reduce the coefficient of thermal expansion, and can be easily manufactured. Can be provided.
[0051]
  That is, according to the core 100 of the present invention, the core body 10 is integrated with the outer side of the core material 20 serving as the rotating shaft via the support layer 40 made of the foamable resin 41 or the like. Even if the whole has a large diameter, the overall weight does not increase (achievement of lightness). Moreover, by having comprised as mentioned above, the rigidity of this core 100 becomes sufficient irrespective of being lightweight, and also the intensity | strength which can fully oppose the winding force of an original film is high. (Ensuring strength). Further, the core body 10 on which the raw film is directly wound is supported on the entire inner surface of the core material 20 by the support layer 40 made of the foamable resin 41 or the like. 10 does not always bend or deform partially, it will be woundOriginal fabricNo wrinkles are generated (to ensure smoothness).
[0052]
  Furthermore, according to this core 100,Original fabricSince the core body 10 on which the wire is directly wound is formed of a material having a small thermal expansion coefficient, the core body 10 is not greatly expanded due to mechanical heat generated at the time of winding. Since it supports with respect to the material 20 via the support layer 40, it should be wound around the surface of the core body 10Original fabricIn other words, “wrinkles” are not generated (non-thermal expansion property is ensured).
[0053]
  In the core 100, the core body 10 is firmly supported by the core material 20 via the support layer 40, so that scratches and dirt generated on the coating layer 16 of the core body 10 are polished. Alternatively, when the core 100 is removed by grinding, the core 100 does not bend at all, so that a perfect circle state can be secured in all portions of the core 100, and the core 100 is sufficiently reused. It can be done.
[Brief description of the drawings]
FIG. 1 is a partial perspective view of a winding core according to the present invention.
FIG. 2 is a partial perspective view showing a structure of a core body constituting an outer portion of the core.
FIG. 3 is a partial perspective view showing a structure of a core material constituting an inner portion of the winding core.
4A is a side view of the same core, and FIG. 4B is a cross-sectional view taken along line 1-1 of FIG.
FIG. 5 is a longitudinal sectional view of the core shown in FIG.
FIG. 6 is a partial cross-sectional view showing an example of a connecting plate that integrates a core body and a core material.
FIG. 7 is a cross-sectional view showing a manufacturing method when the support layer of the core according to the present invention is made of a foamable resin.
FIG. 8 is a cross-sectional view showing a manufacturing method when the support layer of the core according to the present invention is constituted by a hollow sphere.
FIG. 9 is a cross-sectional view showing a manufacturing method when the support layer of the core according to the present invention is made of a foamed resin disc.
FIG. 10 is a cross-sectional view showing a manufacturing method when the core support layer of the present invention is formed of a honeycomb sheet.
FIG. 11 is a cross-sectional view showing a conventional core.
[Explanation of symbols]
  100 roll core
    10 core body
    11 Molded cored bar
    12 Base material layer
    13 Fiber
    14 First winding layer
    15 Second winding layer
    16 Coating layer
    20 core material
    30 connecting plate
    40 Support layer
    41 Expandable resin
    42 Hollow sphere
    43 Foamed resin disc
    44 Honeycomb sheet
    50 Chucking board

Claims (2)

A core used for winding a film, sheet, etc.
A cylindrical core body that constitutes the outermost layer and on which the raw material is wound, and a core material that is stored in the core body leaving a predetermined space and serves as a rotating shaft during winding, etc. And a connecting plate for connecting the core material and the core body to each other,
The winding core body, a prepreg glass cloth or carbon cloth or the like substrate layer formed by winding, glass, tilting the textiles formed by synthetic fibers of inorganic fibers or nylon such as carbon in a predetermined A first winding layer wound at an angle; a second winding layer formed by winding the fibers at an intersection angle different from the intersection angle of the fibers forming the first winding layer; and a coating layer. as well as configuration,
The surface of the core body is a polished surface having a surface roughness of 1S to 1.5S,
And predetermined forms form a support layer made of a cushioning material into the space, winding core for original fabric characterized that you configure this support layer by a honeycomb sheet between the core body and the core . A core used for winding a film, sheet, etc.
A cylindrical core body that constitutes the outermost layer and on which the raw material is wound, and a core material that is stored in the core body leaving a predetermined space and serves as a rotating shaft during winding, etc. And a connecting plate for connecting the core material and the core body to each other ,
The core body is formed by winding a prepreg-made glass cloth or carbon cloth or the like, and a fiber formed by inorganic fibers such as glass or carbon, or synthetic fibers such as nylon, at a predetermined inclination angle. A first winding layer wound with a second winding layer formed by winding the fibers at an intersection angle different from the intersection angle of the fibers forming the first winding layer, and a coating layer And
The surface of the core body is a polished surface having a surface roughness of 1S to 1.5S,
And the core for raw materials characterized by forming the support layer which consists of a buffer material in the predetermined space between the said core body and a core material, and comprised this support layer by the hollow spherical body .

Images