JP4009991B2 - Manufacturing method of resin roll with shaft - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for manufacturing a resin roll with a shaft, and more specifically, from a fluid resin material containing bubbles adjusted by, for example, a mechanical floss method (mechanical stirring method) or the like, and having a shaft on a central axis. The present invention relates to a method capable of continuously producing resin rolls having substantially the same physical properties by eliminating the difference in various physical properties represented by hardness in the axial direction (longitudinal direction) and the radial direction.
[0002]
[Prior art]
Components such as a transfer roll, a paper feeding / feeding roll, and the like are disposed in a copying machine, a fax, and other office equipment. This roll is obtained by forming a highly functional urethane material having a so-called microcell structure as a roll having a required length, and inserting a shaft body as a rotation support member coaxially therewith. In forming the roll, the required foam is generally produced by mixing an inert foam-forming gas such as dry air or nitrogen without adding water or foam to the raw material. A mechanical stirring method (hereinafter referred to as a mechanical floss method) is preferably employed. The roll obtained by adopting this mechanical flossing method has structural features that the size of bubbles contained therein is substantially the same and homogeneously dispersed, and the anisotropy of the shape is small. For this reason, the obtained roll is supplied without slipping because the pressing force on the outer peripheral surface, that is, the nip pressure (nip amount) required when feeding a sheet-like conveyed object such as printing paper is constant. It has excellent advantages such as being able to perform feeding.
[0003]
In order to contribute to an understanding of the prior art, an example of a method and an apparatus for producing a resin roll made of urethane foam by a mechanical floss method will be described below. The roll obtained here is a fluid mixed gas raw material (hereinafter referred to as a fluid resin raw material (herein, foamed urethane resin)) M obtained by mixing the foaming gas and the raw material. Is molded into a mold 216 having a cavity 218 that matches the shape of the product to be obtained, for example as shown in FIGS. The mold 216 includes a pair of mold halves 222 each having a cavity 218 defining a plurality of independent cavities 218 recessed in parallel on the contact surface. The plurality of molds 216 are arranged in parallel along the transport line. An injection hole 224 for injecting the fluid resin raw material M is opened at a predetermined position of the mold 216 so as to be in spatial communication with the cavity 218. Further, each of the cavity halves 220 is a groove having a semicircular cross section extending from a position corresponding to both ends of the foamed resin roll R, which is a molded product to be obtained, to a portion extending over each end of the mold half 222. 226 is formed, and the core 228 is mounted through the groove 226 when the mold 216 is opened.
[0004]
When the resin roll R is manufactured, the mold 216 is used as follows (see FIG. 22). That is,
(1) One mold half 222 in the mold 216 that has arrived from the upstream side to a core mounting position 230 disposed at a predetermined position on the production line of the resin roll R is rotated to rotate the cavity half 220. To release.
{Circle around (2)} In this state, the core 228 is attached to each cavity half 220 of one mold half 222 through the groove 226. The core 228 itself is set to have an outer diameter that is the same diameter as the shaft that is concentrically inserted and disposed in the resin roll R that is the final product, and is sufficiently longer than the axial length of the roll R. By mounting the rod-shaped member in the groove 226, a sufficient molding space, that is, the cavity 218 is defined between the inner surface and the inner surface of the cavity half body 220 in alignment with the axial center of the cavity half body 220. To do.
[0005]
(3) The mold 216 fitted with the core 228 is closed by rotating one of the mold halves 222. For example, the raw material on the downstream side along the production line by one block. Moved to infusion device 232. As a result, when another mold 216 that has been positioned on the upstream side is transported downstream and arrives at the core mounting position 230, one of the mold halves in the same manner as the previous mold 216. The body 222 is opened, and the core 228 is attached to each cavity 218. By repeating this procedure, the mold 216 with the core 228 attached is sequentially transferred to the downstream side along the production line.
(4) The flowable resin raw material M is injected into the molding die 216 conveyed downstream of the production line through the injection hole 224.
(5) The mold 216 into which the fluid resin material M is injected is heated by a tunnel heating furnace 234 provided further downstream of the production line. As a result, the fluid resin material M reacts and cures in the cavity 218, and is formed into a roll having the inner contour shape of the cavity 218 as the outer contour shape. The tunnel heating furnace 234 is a heating furnace having a required length formed along a production line, and its internal temperature is controlled and maintained at a required temperature necessary for the reaction and curing of the fluid resin material M. .
[0006]
(6) After completion of the reaction / curing by heating in the tunnel heating furnace 234, the mold 216 is conveyed to a demolding station 236 located further downstream. In the demolding station 236, the mold 216 is opened by the rotation of one of the mold halves 222. In this state, by removing both ends of the core 228 from the groove 226, the foam resin roll R, which is a molded product, is detached from the cavity half 220, and the core 228 is further removed from the roll R. By pulling out, a molded product is obtained.
[0007]
[Problems to be solved by the invention]
Due to the operation of the resin roll R manufacturing apparatus using the mold 216 described above, heat is applied to the fluid resin raw material M inside the cavity 218, and the desired resin roll R is obtained upon completion of the reaction and curing. It is done. However, the following problems are pointed out when using this manufacturing process.
{Circle around (1)} Basically, it is a batch process, and it is difficult to carry out continuous production, that is, efficient production with greatly reduced production costs.
(2) Heating of the fluid resin raw material M can basically be performed only from the outside, and therefore, the reaction / curing of the fluid resin raw material M injected into the cavity 218 may vary depending on the part. . Thereby, the physical property of the resin roll R which should be obtained becomes heterogeneous, and the suitable roll R cannot be manufactured. In particular, the urethane foam forming the obtained resin roll R is a good heat insulator, and the surface portion that has been reacted and cured previously acts as a heat insulator, so that heat is further applied to the inside from the surface portion after the reaction and curing. It cannot be transmitted efficiently. Therefore, the physical properties of the obtained resin roll R are greatly inhomogeneous over the radial direction.
{Circle around (3)} In order to reduce the adverse effects caused by the heating and to shorten the time required for the reaction / heating, it is also common to preheat the mold 216 and the core 228. In this case, in the manufacturing process, the above-described heating is performed before the flowable resin raw material M is injected into the mold 216, but the raw material M is injected into the injection hole 224 ( As shown in FIG. 23, the reaction / curing starts sequentially from the site where the fluid resin raw material M in the vicinity of the injection hole 224 comes into contact most quickly. As a result, a serious drawback is pointed out that a resin roll R having different physical properties is produced along the injection path of the fluid resin raw material M (in this case, the axial direction of the obtained resin roll R).
(4) As a means for avoiding the problems described in (2) and (3) above, the flowable resin raw material M is dissolved for a long time from a low temperature to eliminate the temperature difference in the raw material M. A method of heating gradually is conceivable. However, in this case, excessive time is required for heating, and it is apparent that batch processing is not suitable for production for actual industrial mass production because it is better that the cycle time is short.
[0008]
OBJECT OF THE INVENTION
In view of the problems inherent in the above-described conventional technology, the present invention has been proposed to suitably solve this problem, and at least the axial direction (longitudinal direction) of the obtained resin roll, and further, the radius It is an object of the present invention to provide a method for producing a resin roll with a shaft that has a small difference in physical properties in the direction and can be continuously produced.
[0009]
[Means for Solving the Problems]
In order to solve the above-described problems and achieve the intended purpose suitably, the method for producing a resin roll with a shaft according to the present invention includes:
Supply a long sheet in a predetermined direction,
The long sheet is formed into a long cylindrical body by gradually forming both side edges along the longitudinal direction close to each other at the upper side,
In the process of forming into the long cylindrical body, the fluid resin material is injected into the upper opening region of the long sheet, and the approximate length of the axis of the long resin roll to obtain the required length of the shaft is met. To supply and
In a state of being encapsulated in the long cylindrical body, the fluid resin raw material transferred through the required number of molded pipes is heated and reacted / cured at least according to the principle of dielectric heating to form a long resin roll. It is characterized by doing so.
[0010]
In order to solve the above-described problems and achieve the intended purpose suitably, a method for producing a resin roll with a shaft according to another invention of the present application,
Supplying the first long sheet in a predetermined direction;
Gradually forming the first long sheet into a long cylindrical body,
In the process of forming the long cylindrical body, a fluid resin raw material is injected into the upper opening region of the first long sheet, and a substantially central axis of a long resin roll to obtain a shaft having a required length. Supply along
Cover with a second long sheet so as to prevent leakage of the fluid resin material from at least the first long sheet,
The resin raw material transported through the required number of molding pipes in the state of being enclosed in the long cylindrical body and the second long sheet is heated and reacted / cured at least according to the principle of dielectric heating, and the resin roll is long It is characterized by forming an object.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Next, the manufacturing method of the resin roll with a shaft according to the present invention will be described below with reference to the accompanying drawings with a preferred embodiment. The inventor of the present application, for example, in the production of a urethane foamed resin roll (hereinafter referred to as a resin roll) by a mechanical floss method that is likely to cause a difference in physical properties depending on the site as described above, the fluidity provided for the production of the resin roll to be obtained By using a molded pipe that can transfer resin raw materials while regulating the outer diameter and at least heating based on the principle of dielectric heat generation (heating), the resin roll can be made continuous with almost no change in physical properties such as internal hardness. It has been found that it can be manufactured. In the present invention, the term “cylindrical body” is intended to include a shape close to a perfect circle, an ellipse, and the like, and also a polygonal shape with chamfered corners.
[0012]
As shown in FIG. 1, the preferred method for producing a resin roll with a shaft according to the present invention regulates the outer shape of the resin roll R to be obtained and is a first long sheet serving as a transfer means for the fluid resin raw material M. (Hereinafter referred to as a first sheet) 92 and a second long sheet (hereinafter referred to as a second sheet) 94, a sheet supplying step S1, and from the supplied sheets 92, 94, the resin roll R A long double cylindrical body 90 substantially equal to the outer diameter is formed, and a cylinder making / material supplying step S2 for supplying the fluid resin raw material M and the shaft 98 during the molding, and the supplied raw material M and From the outer peripheral surface of the obtained long resin roll LR, a heating step S3 in which the long double cylinder 90 surrounding the shaft 98 is supplied with heat at least according to the principle of dielectric heating to obtain a long resin roll LR. Peel the long double cylinder 90 That the stripping step S4, consists essentially further from the cutting step S5 Metropolitan of cutting the resin roll long products LR to a required length.
[0013]
(About overall configuration of resin roll manufacturing equipment)
Next, in order to contribute to an understanding of the method for producing a resin roll according to the present invention, an example of a production apparatus is shown below. As shown in FIG. 2, the manufacturing apparatus 10 that manufactures the resin roll with a shaft according to the embodiment includes a required number of molded pipes 20 arranged in series from the upstream side to the downstream side of the manufacturing apparatus 10, and the required number. The sheet supply device 24 in which the first sheet 92 and the second sheet 94 having a width are wound in a roll shape, and the sheet supply device 24 and the sheet peeling device 72 are disposed. A sheet cylinder device 30 for gradually forming into a double cylinder 90, a material injection device 50 for injecting a fluid resin material M into the cylinder 90, and a shaft supply device 52 for supplying a shaft 98 of a required length Then, the flowable resin raw material M in the cylindrical body 90 is reacted and cured to form a long resin roll LR, and the cylindrical body 90 is continuously pulled and transferred on the most downstream side of the pipe 20. Roll length The length pulling device 70, the sheet peeling device 72 for continuously peeling the cylindrical body 90 from the outer peripheral surface of the long resin roll LR obtained on the downstream side of the device 70, and the long length LR are required. It basically comprises a roll cutting device 74 that cuts into a long length. That is, by pulling both sheets 92 and 94 formed on the long double cylindrical body 90 with the roll long object pulling device 70, the both sheets 92 and 94 wound around the sheet supply device 24 can be obtained. It is structured to be continuously pulled and transferred in a certain direction (direction toward the sheet peeling device 72).
[0014]
In the sheet cylinder 30 arranged in the middle of the sheet transfer, the two sheets 92 and 94 are respectively transferred to an inner long cylindrical body 93 and an outer long double cylindrical body 95 constituting the long double cylindrical body 90. In the molding process, a cylinder making / material supply step S2 is performed in which injection of the fluid resin raw material M from the raw material injection device 50 and supply of the shaft 98 from the shaft supply device 52 are performed, A heating step S3 is performed in which the fluid resin raw material M transferred in a state of being enclosed in the long double cylindrical body 90 is heated and reacted / cured by the heating device 60 to form a long resin roll LR. Thereafter, the long double cylindrical body 90 is peeled from the outer peripheral surface of the long resin roll LR, and a peeling step S4 and a cutting step S5 for cutting to a required length are performed. In the following description, the upstream side and the downstream side are respectively referred to based on the transfer direction of the first sheet 92 and the second sheet 94.
[0015]
(About sheet feeder)
As shown in FIG. 2, the sheet supply device 24 includes a first sheet supply mechanism 26 that winds the first sheet 92 in a roll shape, and a second sheet supply mechanism 28 that winds the second sheet 94 in a roll shape. It consists of and. The long sheet supply device 24 regulates the outer shape of the resin roll R to be obtained by surrounding the flowable resin raw material M, and the first sheet 92 and the second sheet that serve as means for transferring the inside of the pipe 20. The sheet 94 is continuously supplied. The first sheet 92 and the second sheet 94 are restricted to the outer shape of the resin roll R to be obtained by surrounding the fluid resin material M and the shaft 98, and the fluid resin material M and the shaft 98 are transferred. It functions as a means (see FIG. 5). An inner long cylindrical body 93 and an outer long cylindrical body 95 are formed from the first sheet 92 and the second sheet 94, respectively, and the long double cylindrical body 90 is formed from both the long cylindrical bodies 93 and 95. Is configured. Since the width dimension of the second sheet 94 is set to be larger than the width dimension of the first sheet 92, an outer side formed from the second sheet 94 when the long double cylindrical body 90 is formed. The long cylindrical body 95 covers the entire outer peripheral surface of the inner long cylindrical body 93 made of the first sheet 92 (see FIG. 5, FIG. 6 or FIG. 8A). In addition, as a material of the first sheet 92 and the second sheet 94, for example, a paper material or the like that is insulative and has been subjected to a releasability treatment is used, and can be easily peeled off from a long resin roll LR described later. It has come to be able to do. Each of the first sheet 92 and the second sheet 94 can be suitably used at a reaction temperature necessary for the reaction / curing of the fluid resin material M.
[0016]
(About sheet cylinder)
As shown in FIG. 3, the sheet cylinder device 30 is provided with a plurality of plate-like members 32 as regulating members provided at a predetermined interval on the downstream side of the sheet supply device 24, and upright support for each plate-like member 32. It consists of a possible common base 38. The common base 38 is a main part of the sheet cylinder 30 and a plurality of grooves 38a perpendicular to the extending direction of the sheets 92 and 94 are provided at predetermined intervals on the upper side thereof. Each plate-like member 32 is supported upright in the groove 38a so as to be detachable and replaceable. Further, the plurality of plate-like members 32 are respectively provided with a first slit 34 through which the first sheet 92 can be inserted and a second slit 36 through which the second sheet 94 can be inserted. Here, the plate-like member 32 disposed closest to the sheet supply device 24 is formed such that the first and second slits 34 and 36 are substantially V-shaped. In the plate-like member 32 adjacent to the downstream side of the member-like member 32, the slits 34, 36 are formed so as to be substantially U-shaped. And the shape of the 1st slit 34 pierced by each said plate-shaped member 32 is set so that it may become close to a circle gradually as it goes downstream from an upstream. When the first slit 34 becomes substantially circular, the first sheet 92 and the second sheet 94 may be inserted through only the second slit 36 formed in each plate-like member 32. The shape of the second slit 36 is also set so as to gradually become a circle as it goes downstream (see FIGS. 3 and 4).
[0017]
As shown in FIG. 3 or FIG. 4, both ends along the longitudinal direction of the first sheet 92 are formed by sequentially inserting the first sheet 92 into the first slits 34 formed in the plate-like members 32. The inner first long cylindrical body 93 in which the edges 92a and 92a are superimposed on each other is gradually formed. Then, the second sheet 94 is sequentially inserted into the second slits 36 formed in the plate-like members 32 at substantially the same time or after the molding of the first long cylindrical body 93, so that the second sheet 94 is inserted. An outer second long cylindrical body 95 in which both end edges 94a and 94a along the longitudinal direction of 94 are overlapped on the upper side is formed. In this way, the first sheet 92 and the second sheet 94 are formed into a long double cylindrical body 90 in the sheet making apparatus 30. Here, since the width dimension of the second sheet 94 is set larger than the width dimension of the first sheet 92 as described above, the entire outer peripheral surface of the first elongated cylindrical body 93 is the second elongated sheet. The cylindrical body 95 can be covered. The first and second slits 34 and 36 are aligned in the extending direction of the sheets 92 and 94, and the sheets 92 and 94 corresponding to the slits 34 and 36 are inserted substantially linearly. It is. In the present invention, the fact that both end edges along the longitudinal direction are close to each other includes a state in which the both end edges are in contact with each other.
[0018]
As shown in FIG. 2 or FIG. 6, the sheet cylinder device 30 is composed of a metal block or a metal roller of a good heat conductor with a built-in heat transfer heater, and both end edges of the sheets 92 and 94. A sealing device 80 is provided that slidably contacts the overlapping portions 92b, 94b of 92a, 92a, 94a, 94a. The sealing device 80 heats the polymerization portions 92b and 94b to react and cure the fluid resin raw material M located at the site to seal the polymerization portions 92b and 94b. Prevent leakage of M (see FIG. 7). Further, a molding pipe 20 (described later) through which the long double cylinder 90 can be inserted is disposed downstream of the sealing device 80, and the long double cylinder is included in a state in which the fluid resin material M is included. The body 90 is transferred through the forming pipe 20.
[0019]
(About raw material injection device and shaft supply device)
In the molding process of obtaining the long double cylindrical body 90 from the first sheet 92 and the second sheet 94, the cross-sectional shape of each sheet 92, 94 gradually changes to a circular shape through a U-shape opened upward. To do. Then, as shown in FIG. 3 or FIG. 5, the fluid resin raw material M is injected by the raw material injection device 50 and the shaft is supplied to the first sheet 92 in the above-described upper opening state, that is, the state having the upper opening region. The shaft 98 is supplied by the device 52. The raw material injection device 50 and the shaft supply device 52 are disposed in the vicinity of the upper opening region.
[0020]
As shown in FIG. 5, the raw material injection device 50 is communicated with a raw material tank (not shown) for storing the fluid resin raw material M so that the fluid resin raw material M is placed in an upper opening region of the first sheet 92. Inject under control. In this embodiment, the fluid resin material M is produced by substantially uniformly stirring a foaming gas such as dry air or an inert gas such as nitrogen into a urethane resin material such as polyol and isocyanate. In this embodiment, the fluid resin raw material M obtained by mixing the urethane resin raw material with a foaming gas in a substantially uniform manner is used, but the dielectric constant is not less than 1.1. And the dielectric loss (coefficient) is 1 × 10 ^-3 It is possible to generate heat according to the principle of dielectric heat generation described below. Therefore, in the method for producing a resin roll with a shaft according to the present invention, for example, general resins such as urethane resin, urea resin, NBR latex and PVC latex can be used. As for the raw material properties, any solid material, foaming material by mechanical foaming or foaming material chemically chemically foamed can be used as long as it is in a fluidized state in the operating temperature range as described above. Further, the injection amount per unit time of the fluid resin raw material M from the raw material injection device 50 is set to be substantially equal to the volume transferred per unit time of the long double cylindrical body 90. That is, the cross-sectional area of the long double cylinder 90 is A (cm ² ), When the transfer speed is B (cm / sec), A × B (cm ^Three / Sec) of fluid resin material M is injected. The supply weight per unit time of the fluid resin raw material M can also be calculated from the density of the raw material M. In addition, when a foaming raw material by a chemical foaming method in which a foaming agent is mixed is used as the fluid resin raw material M, in addition to the above-mentioned elements, the volume increase due to the foaming ratio in the raw material is taken into consideration. An injection volume is determined. Further, when the shaft 98 is supplied upstream of the raw material injection device 50, a calculation is performed in consideration of the volumes of the shaft 98 and the positioning member 99.
[0021]
2, 3 or 5, the shaft supply device 52 is arranged on the downstream side of the raw material injection device 50. After the flowable resin raw material M is injected from the raw material injection device 50, the shaft supply device 52 has a required length. The shaft 98 is intermittently supplied to the upper opening region of the first sheet 92. In this embodiment, the shaft 98 is supplied after the flowable resin raw material M is injected, but the raw material M may be injected after the shaft 98 is supplied. As the shaft 98, a solid or hollow rod member having a required length necessary for the resin roll R to be obtained is used. Further, when the internal heating mechanism 62 using the induction heat generation (heating) principle is used in the heating device 60 described later ([0025]), at least the outer peripheral surface 98b is provided with a solid or hollow material that can generate induction heat generation. Shaft 98 is used (in this embodiment, a solid structure). As the substance, a magnetic material such as iron is adopted in order to efficiently perform heat supply based on the principle of induction heat generation described later ([0025]). In addition, when it is necessary to make the resin roll R to be obtained lightweight, a lightweight ABS resin is adopted as the main body of the shaft 98, and induction heat can be generated as the shaft outer peripheral surface 98b. A flake may be applied. If the shaft outer peripheral surface 98b is provided with a material that can generate induction heat in this way, the material of the shaft body may be stainless steel, glass, cement, or various resins such as POM (polyoxymethylene) or PES (polyethersulfone). It can be adopted.
[0022]
Positioning members 99 and 99 made of a non-magnetic material such as silicone rubber are set at both end portions 98a and 98a of the shaft 98 so as to have an outer diameter substantially equal to the inner diameter of the long double cylindrical body 90. It is detachably mounted (see FIG. 2 or FIG. 3). As the positioning member 99, a nonmagnetic material such as aluminum is also preferably used. The positioning members 99, 99 are for supplying the central axis of the shaft 98 along the central axis of the long double cylinder 90 (resin roll R to be obtained). Further, by attaching the positioning members 99 and 99, the long double cylindrical body 90 including the long resin roll LR obtained by reacting and curing the fluid resin material M functions as a sandwich conveyor. When the roll long product pulling device 70 (described later in [0028]) is used to pull and transfer, excessive compression deformation of the long resin roll LR can be suppressed. As shown in FIG. 12, the plurality of shafts 98 may be sequentially connected by the positioning member 99 and continuously supplied from the upper opening region of the first sheet 92.
[0023]
(About molded pipe)
A plurality of molded pipes 20 formed in a cylindrical shape by impregnating glass fibers with an epoxy resin are linearly disposed on the downstream side of the sheet cylinder device 30, and the sheet cylinder device 30 is molded with the above-described sheet cylinder device 30. The long double cylinder 90 can be allowed to pass through. Further, as shown in FIG. 8B, the molded pipe 20 extends inside heating mechanisms 62, 64, 66 (described later in [0025]) in the heating device 60, and basically each Corresponding to the heating mechanisms 62, 64, 66 are provided. The long double cylindrical body 90 including the fluid resin raw material M and the shaft 98 can be transferred while receiving the heating action from the heating device 60. The material of the molded pipe 20 is not limited to that of the embodiment, and a dielectric having a dielectric loss smaller than that of the fluid resin material M is preferably used.
[0024]
(About the guide sheet)
A guide sheet 76 that reduces friction between the first sheet 92 and the second sheet 94 that is transferred while being in contact with the inner peripheral surface 20a is provided on the inner peripheral surface 20a of the molded pipe 20. 20 extends in the longitudinal direction. In the guide sheet 76, a frictional force is generated between the long double cylinder 90 and the inner peripheral surface 20a depending on the type of the fluid resin raw material M to be used. And the inner peripheral surface 20a, the frictional force is reduced to facilitate the transfer of the long double cylindrical body 90, and the fluid is surrounded by both the sheets 92 and 94. When the flowable resin raw material M is leaked to the outside, it has a role of minimizing the harmful effects caused by the leak. Therefore, the guide sheet 76 needs to be disposed at least in a portion of the molded pipe 20 where the fluid resin raw material M may leak. It is desirable to continuously provide the entire length of the forming pipe 20 that reaches the downstream. In consideration of this point, in the present embodiment, the base point and the end point of the guide sheet 76 are positioned at the uppermost stream and the lowermost stream of the forming pipe 20, respectively, and extend to the pipe inner peripheral surface 20a over the entire length of the pipe 20. It is left. Further, the guide sheet 76 is continuously led out from the guide sheet supply mechanism 22 at the base point, and the guide sheet 76 is wound up in a roll shape by the guide sheet collecting mechanism 23 at the end point, and if necessary, the forming pipe 20 The inner guide sheet 76 can be exchanged. The material of the guide sheet 76 is mainly composed of aramid fibers in consideration of the heating by the heating device 60 and friction reduction, and this is woven into a required sheet shape and coated with fluorine resin or silicone resin. Long objects are preferably used. As the main body of the guide sheet 76, an aramid paper, a polyimide film, a PPS (polyphenylene sulfide) film, or the like can be employed in addition to an aramid fiber. From the factors such as the length and inner diameter of the molded pipe 20 and the required heat resistance, it may be difficult to reduce the friction by directly applying fluorine resin or silicone resin to the inner peripheral surface 20a. . In such a case, the presence of the guide sheet 76 is a very simple and effective alternative to low friction processing.
[0025]
(About heating device)
The heating device 60 is disposed on the downstream side of the sheet cylinder 30 and the amount of heat necessary for the reaction and curing of the flowable resin material M contained in the long double cylinder 90 and transferred. Supply. As shown in FIG. 8B, the heating device 60 includes an internal heating mechanism 62, an external heating mechanism 64 and a preheating mechanism 68 for heating the fluid resin material M using an induction heat generation principle, and a dielectric heat generation. This is basically composed of an intermediate heating mechanism 66 that heats the fluid resin raw material M using the principle. The internal heating mechanism 62, the external heating mechanism 64, the preliminary heating mechanism 68, and the intermediate heating mechanism 66 are arranged in this order from the upstream side to the downstream side. Here, the principle of induction heat generation is that an alternating current of approximately 50 Hz to 40 MHz is caused to flow through an induction coil 63 wound around the molded pipe 20 to cause an induction current in a magnetic material existing in the magnetic flux, It makes the magnetic body self-heat. The principle of dielectric heat generation is that an alternating current of approximately 350 KHz to 40 MHz is applied to a pair of electrodes 67 and 67 arranged opposite to each other with the molded pipe 20 interposed therebetween, and molecules of an object to be heated (dielectric material) existing in the generated electric field. It activates exercise and causes self-heating.
[0026]
In the internal heating mechanism 62 and the preheating mechanism 68, the shaft 98 positioned at the center of the fluid resin material M transferred through the molding pipe 20 is self-heated by the principle of induction heat generation, and the shaft 98 is The inner peripheral area IP of the surrounding fluid resin material M is selectively reacted and cured (see FIG. 9). In the external heating mechanism 64, a cylindrical body 64a (see FIG. 8B) is disposed on the outer peripheral portion of the molded pipe 20, and the cylindrical body 64a is self-heated by the induction heat generation principle. The outer peripheral region OP of the fluid resin raw material M located in the vicinity of the molded pipe 20 is selectively reacted and cured by heat (see FIG. 9). Therefore, as the cylindrical body 64a, a magnetic body having good heat conduction efficiency, for example, a metal is preferably used. Further, instead of using the cylindrical body 4a, the corresponding portion of the molded pipe 20 may be a magnetic body, and the molded pipe 20 may be induced to generate heat. In addition, since the cylindrical body 64a or the molded pipe 20 is exposed to the outside, heating by so-called conductive heating with a heat transfer heater may be performed.
[0027]
Further, in the intermediate heating mechanism 66, the intermediate region MP (see FIG. 9) sandwiched between the inner peripheral region IP and the outer peripheral region OP in the flowable resin raw material M is self-heated by a dielectric heat generation principle, and this heat The fluid resin material M in the intermediate region MP is selectively reacted and cured. By using these series of heating mechanisms 62, 64, 66, the flowable resin raw material M contained in the long double cylinder 90 is reacted and cured during its transfer, so that the inner diameter of the molded pipe 20 is increased. A long resin roll LR having an outer diameter substantially equal to that of the long double cylindrical body 90 is obtained. A heat retention mechanism 69 that performs thermal curing of the long resin roll LR after being heated by the respective heating mechanisms 62, 64, 66 is provided on the downstream side of the heating device 60. The heat retaining mechanism 69 is surrounded by a heat insulating material 69a, and is configured to maintain at least the heat applied by each of the heating mechanisms 62, 64 and 66. In addition, it can replace with the said heat insulating material 69a, and it can also comprise so that it may heat positively and may obtain a heat retention effect by using a predetermined heating means.
[0028]
(About long roll tension device)
The roll long object pulling device 70 is disposed on the downstream side of the heating device 60 and the forming pipe 20 and includes the long resin roll long material LR obtained through each of the devices so far. It is comprised from the sandwich conveyor which consists of a pair of belts 70a and 70a which pulls and conveys the double cylinder 90 continuously under control (refer FIG. 11). Here, the pair of belts 70a and 70a are configured to be rotatable in the horizontal direction and synchronously, and are arranged so that the flat outer peripheral surfaces thereof face each other, and the length of the resin roll between the belts 70a and 70a. A long double cylindrical body 90 in which a scale LR is formed is sandwiched. That is, by continuously rotating the belts 70a at a predetermined speed under a required control, the sheets 92 and 94 are continuously moved in a predetermined direction (a direction from the sheet supply device 24 toward the sheet peeling device 72) as described above. To be supplied. Accordingly, the long double cylinder 90 containing the long resin roll LR that has been reacted and cured in the heating device 60 passes between the belts 70a and 70a after passing through the molding pipe 20. In the sandwiched state, it is sequentially transferred to the downstream side at a predetermined speed.
[0029]
(About sheet peeling device)
As shown in FIG. 2, the sheet peeling device 72 is rotatably supported on the downstream side of the roll long object pulling device 70, and is rotated by driving a drive source (not shown) so that the roll length The first sheet 92 and the second sheet 94 constituting the long double cylindrical body 90 transferred to the downstream side of the scale pulling apparatus 70 are peeled off into a sheet shape, and are taken up and collected. Accordingly, the sheet peeling device 72 includes a sheet collection mechanism 72a that winds and collects the first sheet 92, and a second sheet collection mechanism 72b that winds and collects the second sheet 94. It is comprised so that 94 can be collect | recovered independently, respectively. In other words, the sheets 92 and 94 that have been wound and collected can be reused. Further, the winding speed of the sheet peeling device 72 is set to be equal to the transfer speed by the roll long object pulling device 70 so that the sheets 92 and 94 do not slack.
[0030]
(About roll cutting device)
On the downstream side of the sheet peeling device 72, a cutter 74a that reciprocates at a predetermined interval and a long resin roll LR that peels and collects the sheets 92 and 94 from the long double cylindrical body 90 can be placed. A roll cutting device 74 is provided for cutting the long resin roll LR to a required length by a cutter 74a. The cutting speed by the roll cutting device 74 corresponds to the transfer speed of the resin roll long material LR pulled and transferred by the roll long material pulling device 70, etc., so that the shaft 98 in the resin roll long material LR is moved. It is set so that it can be cut as a unit. That is, one shaft 98 is built in each of the resin rolls R obtained by cutting. The cut resin roll R is subjected to post-processing such as grinding of the outer peripheral surface at a post-processing station 78 provided on the downstream side of the roll cutting device 74. As the post-processing performed at the post-processing station 78, both ends of the resin roll R are processed, that is, the positioning members 99 and 99 are removed and both ends are cut, and the outer peripheral surface of the resin roll R is ground. Achievement of roundness or exposure of cells is performed.
[0031]
[About each manufacturing process]
Next, the manufacturing method of the resin roll with a shaft according to the embodiment will be described in relation to the manufacturing apparatus for the resin roll. In the description of the manufacturing process, it is assumed that the manufacturing apparatus 10 is already in operation, and the roll long object pulling device 70 and the roll cutting device 72 are in an operating state.
[0032]
(About sheet supply process)
In the sheet supply step S <b> 1 performed by the sheet supply device 24, the outer shape of the resin roll R to be obtained at a required position of the manufacturing apparatus 10 is regulated, and the first sheet 92 serving as a transfer unit for the fluid resin raw material M is used. And a step of supplying the second sheet 94. Actually, as described above, the first sheet 92 and the second sheet 94 are supplied by the tensile force of the roll long object tensioning device 70, that is, the belts 70a and 70a of the roll long object tensioning device 70 are rotated. Then, the first and second sheets 92 and 94 wound around the sheet supply device 24 are continuously supplied from upstream to downstream.
[0033]
(Cylinder making process and material supply process)
The cylinder-making process / material supply process S2 performed by the sheet cylinder apparatus 30, the raw material injection apparatus 50, and the shaft supply apparatus 52 includes a cylinder-forming stage S21 continuously performed by the sheet cylinder apparatus 30, and the manufacturing process. It comprises a material supply step S22 performed by the raw material injection device 50 and the shaft supply device 52 during the progress of the cylinder step S21. In the cylinder making step S21, both the sheets 92 and 94 transferred to the sheet cylinder 30 are passed through the first and second slits 34 and 36 formed in the plate member 32, The two sheets 92 and 94 are gradually formed into a U shape opening upward. The two sheets 92 and 94 opened upward in the U-shape are transferred to the downstream side together with the supplied fluid resin raw material M and the shaft 98, and the second members 92 and 94 of the plate-like member 32. The first and second slits 34 and 36 are sequentially passed through and finally formed into a long double cylindrical body 90 in which both end edges 92a and 94a along the longitudinal direction overlap at the upper side. The material supply step S22 is carried out in the course of the cylinder making step S21, and when the both sheets 92, 94 are gradually formed in a U-shape that opens upward, the material is supplied through the upper opening region. The flowable resin raw material M is injected from the raw material injection device 50, and then the shaft 98 is supplied from the shaft supply device 52.
[0034]
Therefore, the shaft 98 is transferred in a state of being arranged at predetermined intervals in the long double cylindrical body 90. Further, since positioning members 99 and 99 are attached to both end portions 98a and 98a of the shaft 98, the shaft 98 can be easily placed on the central axis of the long double cylinder 90 simply by supplying the shaft 98. It is possible to arrange them in line with each other. Further, since the second sheet 94 has a width dimension larger than that of the first sheet 92 as described above, as shown in FIGS. 10 (a) and 10 (b), the overlapping portion of the first sheet 92 is formed. The second sheet 94 can prevent external leakage of the fluid resin material M from 92b. Further, in order to promote the reaction / curing of the leaking fluid resin material M by the sealing device 80 disposed downstream of the sheet cylinder device 30, the overlapping portions 92b, 94b of both sheets 92, 94 are Sealing with the reacted and cured raw material M can surely prevent the subsequent leakage. In addition, since the guide sheet 76 is further interposed between the long double cylindrical body 90 and the molded pipe 20, the adverse effects due to the leakage can be suppressed to a minor level. Further, when the guide sheet 76 is recovered by the guide sheet recovery mechanism 23, a new sheet 76 is led out and supplied from the guide sheet supply mechanism 22, so that the fluid resin material M adheres to the surface thereof. Can be easily exchanged.
[0035]
(About heating process)
In the heating step S3 performed by the heating device 60, heat is sequentially supplied to the long double cylinder 90 containing the flowable resin raw material M by the induction heat generation principle and the dielectric heat generation principle, and the length of the resin roll This is a step of making the scale LR. The long double cylinder 90 formed in the sheet cylinder 30 is transferred to the heating device 60 through the forming pipe 20 in a state of containing the fluid resin material M and the shaft 98. . Here, due to the induction heat generation principle in the internal heating mechanism 62, the outer peripheral surface 98b of the shaft 98 self-heats, and the inner peripheral region IP surrounding the shaft 98 in the fluid resin raw material M is reacted and cured. The In this way, the shaft 98 is efficiently bonded to the shaft 98 by heating the shaft 98 and reacting and curing the fluid resin material M located in the vicinity thereof (the flow of the resin). Depending on the resin material M, it can be adhered). Next, when transferred to the external heating mechanism 64, the cylindrical body 64a provided concentrically with the molded pipe 20 self-heats by the principle of induction heat generation, and the outer peripheral region OP in the fluid resin raw material M reacts. -It is cured. That is, at this time, the inner peripheral region IP and the outer peripheral region OP of the fluid resin raw material M are reacted and cured.
[0036]
The long double cylinder 90 obtained by reacting and curing the outer peripheral region OP of the fluid resin raw material M is transferred to the preheating mechanism 68 and the shaft 98 is reheated by the induction heat generation principle, and then the dielectric heat generation is performed. According to the principle, the intermediate region MP of the resin flowable resin raw material M is self-heated to react and cure. By the way, since the heat insulation of the resin foam constituting the resin roll R obtained by reacting and curing the flowable resin raw material M is high, the inner peripheral region IP and the outer peripheral region OP of the raw material M are respectively subjected to the internal heating. After being reacted and cured by the mechanism 62 and the external heating mechanism 64, it is difficult to quickly and efficiently heat the intermediate region MP sandwiched between the regions IP and OP. However, if the dielectric heating principle is used, an electric field can be applied to the fluid resin material M in the intermediate region MP to cause self-heating by molecular motion, and the intermediate region MP surrounded by a resin foam acting as a heat insulating material. Can be quickly and uniformly heated. The dielectric heat generation principle also provides high heating uniformity because energy is supplied on an average basis with a certain probability (random) so as to make the entire energy level uniform.
[0037]
That is, the internal heating mechanism 62, the external heating mechanism 64, and the intermediate portion heating mechanism 66 are arranged in this order, and the following effects can be obtained by arranging in this order.
{Circle around (1)} Differences in time of reaction / curing in each of the regions IP, OP and MP cause a difference in physical properties such as a difference in hardness in the radial direction of the resin roll R to be obtained. However, after the heat controlled so as to obtain the respective regions IP and OP is first applied and only the minimum thickness is reacted and cured as the respective regions IP and OP, By reacting and curing most of them at once by the dielectric heating principle, the difference in physical properties is suppressed to a minimum, and as a result, a good resin roll R having uniform physical properties can be manufactured.
(2) Reaction / curing of the fluid resin material M in the inner peripheral region IP in a state where the homogeneity of the fluid resin material M having fluidity is highest, that is, in a state where all of the material M is a fluid. By first carrying out the above, it is possible to realize a reliable and strong joint between the roll portion required for the resin roll R to be obtained and the shaft 98.
(3) The reaction / curing of the fluid resin material M in the outer peripheral region OP before the majority of the fluid resin material M is reacted / cured, that is, before being affected by heating and volume expansion due to the reaction. By implementing the above, it is possible to effectively prevent the fluid resin material M from leaking out of the long double cylindrical body 90.
[0038]
Moreover, since each area | region IP, OP, and MP in the said fluid resin raw material M will be directly heated, the urethane foam formed by reaction and hardening of this fluid resin raw material M (in the case of a present Example) As a result, the time required for supplying the required amount of heat, that is, the manufacturing time can be shortened. The arrangement order of the heating mechanisms 62, 64 and 66 is not particularly limited to this order. As for the heating of the inner peripheral region IP, the internal heating mechanism 62 is omitted, and the shaft 98 is supplied in a state preheated to such an extent that the fluid resin raw material R does not start the reaction. The heating may be performed together with the intermediate region MP.
[0039]
Prior to the transfer to the intermediate heating mechanism 66, the shaft 98 is reheated by the preheating mechanism 68, so that the amount of heat when the fluid resin material M in the intermediate region MP self-heats is the shaft 98. It is possible to efficiently suppress the absorption into the resin and promote the reaction / curing of the fluid resin raw material M. Further, the long resin roll LR formed in the stage of transferring the heating mechanisms 62, 64, and 66 and encapsulated in the long double cylindrical body 90 passes through the heat retaining mechanism 69 to generate sufficient heat. Since curing is performed, sufficient reaction and hardening are achieved. That is, the heat retaining mechanism 69 surrounds the molded pipe 20 with a heat insulating material 69a over a required length, and the heating mechanism 62, 64, The thermal energy applied at 66 can be retained. That is, since the reaction temperature and reaction time necessary for the reaction and curing of the fluid resin material M can be ensured, a long and reliable resin roll LR can be obtained.
[0040]
Further, when the reaction / curing of the fluid resin raw material M proceeds, the inner peripheral surface 20a of the molded pipe 20 is pressed by the volume increase (expansion) of the fluid resin raw material M, and the long length in the pipe 20 is increased. The transfer of the double cylinder 90 will be hindered. However, in the present invention, the guide sheet 76 extends in the longitudinal direction of the forming pipe 20 and covers the entire inner peripheral surface 20a thereof, so that the long double cylindrical body 90 and the inner part thereof are covered. The frictional resistance with the peripheral surface 20a can be reduced, and the transfer of the long double cylinder 90 can be facilitated.
[0041]
(About peeling process)
The peeling step S4 is a step of peeling the long double cylinder 90 from the long double cylinder 90 containing the resin roll R transferred from the heating device 60 by the sheet peeling device 72. In the present embodiment, the long double cylindrical body 90 is peeled independently as the first sheet 92 and the second sheet 94, sequentially formed into a sheet, and rolled up and collected. In this way, by separating and collecting the first sheet 92 and the second sheet 94, the sheets 92 and 94 can be reused for the production operation of the resin roll R, and the manufacturing cost can be reduced and discarded. Things can be reduced.
[0042]
(About cutting process and post-processing process)
Then, after the long double cylindrical body 90 (the first sheet 92 and the second sheet 94) is peeled and collected from the long resin roll LR, the long roll LR is cut by the roll cutting device 74. By passing through the cutting step S5, the required length of the resin roll R is obtained. Here, since the roll cutting device 74 is set to cut a portion where the shaft 98 does not exist, all the resin rolls R obtained by cutting are provided with the shaft 98 therein.
[0043]
And in the said post-processing station 78 arrange | positioned in the downstream of the said roll cutting device 74, the positioning members 99 and 99 attached to the both ends 98a and 98a of the shaft 98 which grinds the outer peripheral surface in the said resin roll R are used. A resin roll R having a required outer shape is obtained by performing post-processing steps for performing various post-processing such as removal. In this way, the minute step generated by the transfer of the overlapping portion 92b in the long double cylindrical body 90 (first sheet 92) by performing post-processing is easily removed by the outer peripheral surface grinding, and the product appearance In addition, the performance can be prevented from lowering, the roundness of the resin roll R can be improved, and the cells (pores) can be exposed to the outer peripheral surface.
[0044]
Thus, in the manufacturing apparatus 10, the fluid resin raw material M and the shaft 98 are injected and supplied to both sheets 92 and 94 that are continuously supplied in one direction, and the fluid resin raw material M is reacted and cured. Thus, good continuous production of the resin roll R provided with the shaft becomes possible, and production efficiency and production cost can be reduced by continuous production. Further, since the fluid resin material M is heated by the induction heat generation principle and the dielectric heat generation principle according to the inner peripheral region IP, the outer periphery region OP, and the intermediate region MP, the reaction of the fluid resin material M -Differences in physical properties such as hardness due to the curing site are suppressed, and a homogeneous resin roll R can be produced. Furthermore, since the regions IP, OP, and MP of the fluid resin raw material M are directly heated, the time required for supplying the amount of heat required for the reaction and curing of the fluid resin raw material M, that is, the manufacturing time is reduced. It can be shortened.
[0045]
[Example of change]
In addition, as a manufacturing apparatus which implements the manufacturing method of the resin roll with a shaft, it is not restricted to the thing of the above-mentioned Example, Various changes are possible. For example, the timing for forming the first sheet 92 and the second sheet 94 into the long double cylinder 90 is after the injection of the fluid resin material M and the supply of the shaft 98, and the required timing. Can be done. Also, instead of the shaft 98, a so-called dummy shaft is used to once manufacture a resin roll with a shaft, and then the dummy shaft is pulled out to form a hollow cylindrical resin roll. A required shaft member may be inserted. In this case, it is preferable that the outer peripheral surface of the dummy shaft is subjected to a required release treatment in order to improve the release property from the reacted and cured fluid resin material M. By doing so, a method of individually inserting the shafts 98 in a post-processing station 78 described later is employed, and for example, a resin roller that is short in the axial direction can be efficiently manufactured. Further, due to the presence of the dummy shaft, a skin layer is positively formed on the boundary surface between the dummy shaft and the fluid resin material M. Due to the presence of the skin layer, workability such as press fit and adhesion when the shaft 98 is mounted on the resin roll R is improved. As the dummy shaft, a long member having substantially the same diameter and flexibility as the shaft 98 inserted into the resin roll R may be used. This long dummy shaft has, for example, a hole provided in the plate-like member 32 so as to be able to support the dummy shaft before injection of the fluid resin material M, and a support provided separately after injection. Accordingly, the resin roll long object LR having the long dummy shaft on the substantially central axis is obtained.
[0046]
Further, by changing the number and location of the plate-like members 32 for forming the sheets 92 and 94 into the long double cylindrical body 90 and the shape of the slits 34 formed in the plate-like members 32. The length required to form the long double cylinder 90 can be changed, and can be determined in consideration of the overall size of the apparatus. The restriction member of the long sheet cylinder 30 that forms the long sheets 92 and 94 into a cylindrical body is not limited to the plate-like member 32 of the embodiment. For example, as shown in FIG. It is also possible to employ a long sheet cylinder manufacturing apparatus 100 including a plurality of rollers 102 arranged substantially perpendicular to the traveling direction of the second sheet 94 that forms the outside of the double cylindrical body 90. The plurality of rollers 102 are formed according to their arrangement positions, that is, the second sheet 94 is formed into the long cylindrical body 85 so as to form the second sheet 94 into the long cylindrical body 95 to be obtained. The arrangement angle, the number of arrangements, and the like are appropriately set according to the degree. Here, it is described that the second sheet 94 positioned outside is formed, but the first sheet 92 that exists inside the second sheet 94 and has a narrow width is the length of the second sheet 94. As the long cylindrical body 95 is inevitably formed into the long cylindrical body 93, there is no particular problem. As other restricting members, a long sheet cylinder device composed of a block body continuously having the required shape of each part of the second slit 36, or the roller 102 with a required length of conveyor. It is good also as a structure replaced with.
[0047]
Furthermore, in the embodiment, both end edges 92a and 92b of the long sheets 92 and 94 are overlapped. However, both end edges 92a and 92a of the first sheet 92 are brought close to each other, and both end edges of the first sheet 92 are set. It is also possible to configure so that the second sheet 94 is positioned between 92a and 92a. Furthermore, the long double cylindrical body 90 is formed from the long cylindrical body 93 and the long cylindrical body 95 using the second sheet 94 larger than the width dimension of the first sheet 92. As shown in FIG. 18 or FIG. 19, the width dimension of the second sheet 94 is made smaller than the width dimension of the first sheet 92, and the gap between the both end edges 92 a and 92 a of the first sheet 92 or the overlapping portion 92 b is set to the second sheet 94. The said resin roll long thing LR (resin roll R) can be manufactured also by coat | covering. In the embodiment, the long double cylindrical body 90 having a double structure is formed by using only the first sheet 92 and the second sheet 94. For example, the guide sheet 76 is formed by using both the sheets 92, It is also possible to manufacture the resin roll R by forming it into a long cylindrical body having a triple structure in the sheet cylinder 30. Further, a guide sheet 76 is interposed between the long double cylinder 90 and the molded pipe 20 to reduce the frictional resistance between the long double cylinder 90 and the molded pipe 20, It is also possible to directly apply fluororesin or silicone resin to the inner peripheral surface 20a of the molded pipe 20.
[0048]
The arrangement order of the heating mechanisms 62, 64, 66 and the like in the heating device 60 is not limited to that in the embodiment, and any one of the inner peripheral area IP and the outer peripheral area OP of the fluid resin raw material M is reacted / cured. If the intermediate region MP is configured to be reacted / cured after being changed, it can be changed as required. Further, although the outer peripheral area OP of the fluid resin material M is heated by the external heating mechanism 64 using the induction heat generation principle, as shown in FIG. Heating may be employed. For heating the inner peripheral region IP, the internal heating mechanism 62 is omitted, and the shaft 98 is supplied in a state preheated to such an extent that the fluid resin raw material R does not start the reaction. The heating may be performed together with the intermediate region MP. In the case where the long double cylinder 90 can be transferred to the intermediate heating mechanism 66 while the shaft 98 is maintained at a relatively high temperature, the preheating by the preheating mechanism 68 can be omitted. .
[0049]
Further, as the roll long object pulling device 70 for pulling and transferring the long double cylindrical body 90 (resin roll long object LR), a sandwich conveyor having a flat surface of the belt 70a is adopted. A sandwich conveyor in which the holding portion of the long double cylindrical body 90 is recessed in an arc shape corresponding to the long double cylindrical body 90 may be used (see FIG. 15). In this case, the resin roll long object LR is not forcedly clamped and the contact area with the long double cylindrical body 90 is enlarged, so that the deformation of the long object LR is eliminated. In addition, good tensile transfer can be performed. Furthermore, although the roll long object pulling device 70 is provided alone, a long double cylindrical body is prepared by preparing a driving source for the sheet peeling device 72 and the guide sheet collecting mechanism 23, and winding and collecting it. 90 can be pulled and transferred.
[0050]
[Second embodiment]
Next, the manufacturing method of the resin roll with a shaft which concerns on 2nd Example is demonstrated. In addition, the structure of the manufacturing apparatus of the said resin roll in 2nd Example is the same as the thing of the above-mentioned Example fundamentally, and attaches | subjects the same code | symbol about the same member, and abbreviate | omits detailed description.
[0051]
In the second embodiment, as shown in FIG. 16 or FIG. 17, the flowable resin material M and the shaft 98 are configured to be surrounded only by the first sheet 92 and to be externally regulated. In this case, in the sheet cylinder 110, both end edges 92a and 92a along the longitudinal direction of the first sheet 9 are overlapped to form a single long cylindrical body 93 (the long cylindrical body in the above-described embodiment). 93). Accordingly, the first sheet 92 is continuously supplied by being pulled by the roll long object pulling device 70, and both end edges 92a of the first sheet 92 are gradually formed into a long cylindrical body 93 that is overlapped on the upper side, In the process of forming the long cylindrical body 93, the fluid resin material M and the shaft 98 are injected and supplied from an upper opening region where the first sheet 92 opens upward. Next, the outer peripheral surface 98b of the shaft 98 is formed on the flowable resin raw material M, which is transported through the molding pipe 20 in the state of being enclosed in the long cylindrical body 93, by the heating device 60 by at least the dielectric heat generation principle and induction heat generation principle. The inner peripheral region IP surrounding the shaft 98 that is heated and placed on the flowable resin material M is heated, reacted and cured to form a long resin roll LR. Further thereafter, the first sheet 92 is peeled off from the outer peripheral surface of the long resin roll LR by a sheet peeling device 72, and the long shaft LR of the resin roll is united by one unit by the roll cutting device 74. Is cut to obtain a resin roll R with a shaft.
[0052]
That is, even when the manufacturing apparatus for manufacturing the resin roll with a shaft according to the second embodiment is used, it is possible to obtain the same effect as the above-described embodiment. Further, when the long cylindrical body 93 is formed using the sheet cylinder 110, unlike the embodiment, the second sheet 94 is not used. Only the first slit 34 through which the sheet 92 passes may be formed. In this case, since each apparatus, mechanism, etc. regarding the 2nd sheet | seat 94 become unnecessary, there exists an effect which reduces an initial investment cost and an apparatus operating cost. On the other hand, since the force per unit applied to the long cylindrical body 93 becomes large, it is necessary to pay attention to the tensile strength of the first sheet 92 with respect to the tensile force of the roll long object pulling device 70.
[0053]
【The invention's effect】
As described above, according to the method for producing a resin roll with a shaft according to the present invention, the fluid resin material and the shaft are transferred using a long sheet continuously supplied in a predetermined direction, and at least the dielectric heat generation principle is used. Since the flowable resin material is heated to react and cure by the above, a resin roll with a shaft having a small difference in physical properties at least in the axial direction (longitudinal direction) and further in the radial direction is manufactured continuously. Can do. In addition, since the fluid resin material is heated by using the dielectric heat generation principle, the above-described resin roll with a shaft that is substantially the same without any difference in physical properties in the axial direction and the radial direction can be efficiently and in a short time. The effect which can be manufactured is produced. Furthermore, by using a plurality of the long sheets stacked, it is possible to efficiently prevent leakage of the fluid resin raw material transferred through the molded pipe.
[Brief description of the drawings]
FIG. 1 is a process diagram schematically showing a method for producing a resin roll with a shaft according to a preferred embodiment of the present invention.
FIG. 2 is a schematic side view showing the entire manufacturing apparatus for a resin roll with a shaft according to a preferred embodiment of the present invention.
FIG. 3 is an enlarged perspective view illustrating a part of the sheet cylinder device according to the embodiment.
4 is an explanatory view showing the shape of each of the first slit and the second slit in the plurality of plate-like members constituting the sheet cylinder shown in FIG. 3 along the flow. FIG.
5 is a step-by-step illustration of injection of the flowable resin material, shaft supply, and molding of the first sheet and the second sheet into the respective long cylindrical bodies, which are performed in the sheet cylinder apparatus shown in FIG. It is process drawing shown.
FIG. 6 is an enlarged perspective view showing a part of the sealing device according to the embodiment.
7 shows the state of reaction / curing of the flowable resin material at the joint portion carried out by the sealing device shown in FIG. 6 when both end edges along the longitudinal direction of the long sheet are overlapped. It is sectional drawing.
FIGS. 8A and 8B are an enlarged cross-sectional view (FIG. 8A) and a side view (FIG. 8B) showing a portion of the heating apparatus according to the embodiment. FIGS.
FIG. 9 is a cross-sectional view showing each region that can be heated by each heating method performed by the heating device according to the example.
FIG. 10 is a diagram illustrating a flow-through resin raw material at a joining portion that is implemented by the sealing device shown in FIG. 6 when both ends of the long sheet along the longitudinal direction are overlapped and the liquid resin raw material leaks. It is sectional drawing which showed the mode of reaction and hardening of.
FIG. 11 is an enlarged perspective view of the roll long object tension device according to the embodiment.
FIG. 12 is a schematic perspective view showing a state in which a shaft is continuously supplied using the long sheet cylinder device according to the embodiment.
FIG. 13 is a perspective view showing an outline of a long sheet cylinder making apparatus that uses a roller to obtain a long double cylinder from a first sheet and a second sheet, and a cross-sectional view of each cylinder stage.
FIG. 14 is a schematic view showing a case where conductive heating is used as an external heating mechanism.
FIG. 15 is a perspective view showing a case in which a sandwich conveyor corresponding to a resin roll long product that can be obtained is used as a roll long material pulling device.
FIG. 16 is an enlarged perspective view showing a sheet cylinder apparatus for producing a resin roll using only the first sheet according to the second embodiment.
FIG. 17 is a schematic cross-sectional view showing a joint portion of both end edges along the longitudinal direction of the first sheet according to the second embodiment.
FIG. 18 is an enlarged perspective view of a sheet cylinder device according to a modified example.
FIG. 19 is a schematic cross-sectional view showing a joining portion of both end edges along the longitudinal direction of the first sheet and the second sheet according to a modified example.
FIG. 20 is a plan view showing a roll molding die used for foaming a fluid resin raw material in the production of a resin roll according to a conventional technique.
21 is a cross-sectional view showing an internal state when a resin roll is formed on the roll forming mold shown in FIG.
FIG. 22 is a configuration diagram schematically showing a resin roll manufacturing process using a roll molding die in manufacturing a resin roll according to a conventional technique.
23 is a state diagram showing a state of the raw material when the fluid resin material is injected into the roll molding die shown in FIG.
[Explanation of symbols]
20 Molded pipe
20a Inner peripheral surface
32 Plate member
34 1st slit
36 Second slit
60 Heating device
76 Guide sheet
80 Sealing device
90 Long double cylinder
92 1st long sheet
93 Long cylindrical body
92a both edges
94 Second long sheet
94a both edges
95 Long cylindrical body
98 shaft
98a both ends
98b Outer periphery
99 Positioning member
M Flowable resin raw material
LR long resin roll
R resin roll
IP inner circumference area
OP peripheral area
MP intermediate area

Claims (14)

Supply the long sheet (92) in a predetermined direction,
The long sheet (92) is formed into a long cylindrical body (93) by gradually forming the both end edges (92a, 92a) along the longitudinal direction thereof close to each other on the upper side,
In the process of forming the long cylindrical body (93), the flowable resin material (M) is injected into the upper opening region of the long sheet (92), and the shaft (98) having the required length is obtained. Supply along the approximate center axis of the long plastic roll (LR),
The flowable resin raw material (M) transported through the required number of molding pipes (20) in a state of being enclosed in the long cylindrical body (93) is heated and reacted and cured at least according to the principle of dielectric heating. A method for producing a resin roll with a shaft, wherein a long resin roll (LR) is formed. The shaft (98) is made of a material that can be induction-heated at least on the outer peripheral surface (98b), and the shaft (98) is heated by the principle of induction heat generation to react and cure the fluid resin material (M). The manufacturing method of the resin roll with a shaft of Claim 1 to perform. The long sheet (92) is gradually formed into a long cylindrical body (93) by a regulating member (32, 102) provided in the transfer process of the long sheet (92), and the inside of the forming pipe (20) The manufacturing method of the resin roll with a shaft of Claim 1 or 2 which can pass through. The restricting member comprises a plate-like member (32) disposed at a predetermined interval along the supply direction of the long sheet (92), and a slit (34) drilled in the plate-like member (32). The method for producing a resin roll with a shaft according to claim 3, wherein the long cylindrical body (93) is formed by continuously passing the long sheet (92) through the long sheet (92). The injection of the fluid resin raw material (M) and the supply of the shaft (98) are performed in a process in which the long sheet (92) is gradually formed into a cylindrical shape. Manufacturing method of resin roll with shaft. The reaction / curing of the fluid resin material (M) is performed by heating the inner peripheral region (IP) surrounding the shaft (98) that generates heat by the induction heat generation principle, and by the induction heat generation principle or conduction heating. Heating of the outer peripheral region (OP) adjacent to the inner peripheral surface of the elongated cylindrical body (93) by the formed pipe (20) that has generated heat, and sandwiched between the inner peripheral region (IP) and the outer peripheral region (OP) The method for producing a resin roll with a shaft according to any one of claims 1 to 5, wherein the intermediate region (MP) is heated by heating based on the principle of dielectric heat generation. Supplying the first long sheet (92) in a predetermined direction;
The first long sheet (92) is gradually formed into a long cylindrical body (93),
In the process of forming the long cylindrical body (93), the flowable resin material (M) is injected into the upper opening region of the first long sheet (92) and the shaft (98) having a required length is injected. Supply along the approximate center axis of the long resin roll (LR) to obtain
Covering at least the second long sheet (94) to prevent leakage of the fluid resin material (M) from the first long sheet (92);
The resin raw material (M) transported through the required number of molded pipes (20) in the state of being enclosed in the long cylindrical body (93) and the second long sheet (94) is at least based on the principle of dielectric heating. A method for producing a resin roll with a shaft, characterized in that a long resin roll (LR) is formed by heating and reaction and curing. The shaft (98) is made of a material that can be induction-heated on at least the outer peripheral surface (98b) thereof, and the shaft (98) is heated by the principle of induction heat generation to react and cure the fluid resin material (M). The manufacturing method of the resin roll with a shaft of Claim 7 made | formed. The first long sheet (92) is gradually formed into a long cylindrical body (93) by a regulating member (32, 102) provided in the transfer process of the first long sheet (92), and the formed pipe ( The manufacturing method of the resin roll with a shaft of Claim 7 or 8 which can pass the inside of 20). The restricting member includes a plate-like member (32) disposed at a predetermined interval along the supply direction of the first long sheet (92), and the first member formed in the plate-like member (32) is provided with a first member. The method for producing a resin roll with a shaft according to claim 9, wherein the long cylindrical body (93) is formed by continuously passing the first long sheet (92) through the slit (34). The second long sheet (94) is set wider than the first long sheet (92), and the long sheets (92, 94) are arranged on the inner side by a regulating member (32, 102) provided in the transfer process. The first long cylindrical body (93) and the outer second long cylindrical body (95) covering the first long cylindrical body (93) are respectively molded, and the inside of the molded pipe (20) is formed. The method for producing a resin roll with a shaft according to claim 7 or 8, comprising a long double cylindrical body (90) that can pass through. The restricting member comprises a plate-like member (32) disposed at a predetermined interval along the supply direction of the first long sheet (92) and the second long sheet (94). The first elongate sheet (92) is continuously passed through the first slit (34) drilled in (32), and the second slit (36) drilled in the plate-like member (32) The method for producing a resin roll with a shaft according to claim 11, wherein the long double cylindrical body (90) is formed by continuously passing the second long sheet (94). The injection of the fluid resin material (M) and the supply of the shaft (98) performed along the substantially central axis of the long resin roll (LR) to be obtained include the first long sheet (92 The method for producing a resin roll with a shaft according to any one of claims 7 to 12, which is carried out in the process of gradually forming into a cylindrical shape. The reaction / curing of the fluid resin material (M) is performed by heating the inner peripheral region (IP) surrounding the shaft (98) that generates heat by the induction heat generation principle, and by the induction heat generation principle or conduction heating. Heating of the outer peripheral region (OP) adjacent to the inner peripheral surface of the elongated cylindrical body (93) by the formed pipe (20) that has generated heat, and sandwiched between the inner peripheral region (IP) and the outer peripheral region (OP) The method for producing a resin roll with a shaft according to any one of claims 7 to 13, which is achieved by heating the intermediate region (MP) according to the principle of dielectric heating.

Images