JP4324840B2 - Long sheet cylinder making apparatus and resin roll manufacturing method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a long sheet cylinder making apparatus used in a resin roll manufacturing process.And resin roll manufacturing methodMore specifically, for example, from a flowable resin raw material containing bubbles adjusted by a mechanical floss (mechanical stirring) method or the like, at least in the axial direction (longitudinal direction), and further, the hardness in the radial direction is substantially the same. When continuously manufacturing a resin roll that can be made, a long sheet cylinder making apparatus that plays a role of covering the resin roll in a cylindrical shapeAnd resin roll manufacturing methodIt is about.
[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 injected 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. 17). 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. However, the raw material M is injected into the injection hole 224 (provided at a predetermined portion of the mold 216). As shown in FIG. 18, the reaction / curing starts sequentially from the site where the fluid resin raw material M in the vicinity of the injection hole 224 contacts the fastest. 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 prior art described above, the present invention has been proposed to suitably solve this problem, and uses a molded pipe having an inner diameter substantially equal to the outer diameter of the resin roll to be obtained. And by using a long sheet that regulates the outer shape of the resin roll here, the fluid resin material is heated and reacted and cured while being transferred, so there is no difference in hardness or the like continuously and depending on the part. When producing a resin roll having uniform physical properties, the long sheet surrounds the fluid raw material and is molded into a shape that is allowed to pass through the molding pipe.Long sheetTube making equipmentAnd resin roll manufacturing methodThe purpose is to provide.
[0009]
[Means for Solving the Problems]
  In order to solve the above-mentioned problems and to achieve the intended purpose suitably, the long sheet cylinder making apparatus according to the present invention comprises:
  A long sheet with a flowable resin material is placed in a required number of molded pipes having an inner diameter substantially equal to the outer diameter of the resin roll to be obtained and arranged in series from the upstream side to the downstream side of the production line. The flowable resin raw material is heated and reacted and cured at least in accordance with the dielectric heat generation principle in the transfer process, thereby being used for the process of producing a long resin roll, and the long sheet is A cylinder-making apparatus having a cylindrical body,
  The long sheet is gradually formed into a cylindrical shape so as to allow passage through the forming pipe.And
  In the process of gradually forming the long sheet into a cylindrical shape, injection of the fluid resin material into the long sheet and a shaft or dummy having a required length along the substantially central axis of the long resin roll to be obtained Configured to supply shaftIt is characterized by that.
  In order to solve the above-mentioned problems and achieve the intended purpose suitably, the long sheet cylinder making apparatus according to another invention of the present application is:
  A long sheet with a flowable resin material is transferred into the required number of molding pipes arranged in series from the upstream side to the downstream side of the production line, and the flowable resin material is heated in the transfer process. It is subjected to a process of producing a resin roll long product by reacting and curing, and is a cylinder making apparatus having the long sheet as a long cylindrical body,
While forming the long sheet gradually into a cylindrical shape and allowing the internal passage of the molded pipe,
In the process of gradually forming the long sheet into a cylindrical shape, injection of the fluid resin material into the long sheet and a shaft or dummy having a required length along the substantially central axis of the long resin roll to be obtained It is characterized in that the shaft is supplied.
  In order to solve the above-described problems and achieve the desired purpose suitably, the method for producing a resin roll according to the present invention is as follows.
In the process of gradually forming a long sheet into a cylindrical shape, a flowable resin raw material is poured into the long sheet, and a shaft or dummy shaft having a required length along the substantially central axis of the long resin roll to be obtained is provided. Supply
In the required number of molded pipes arranged in series from the upstream side to the downstream side of the production line and having guide sheets arranged along the inner peripheral surface so as to cover the entire inner peripheral surface, the fluidity Transfer a long sheet with resin raw material,
The flowable resin raw material is heated to react and cure in the process of being transferred through the molded pipe to produce a long resin roll.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
  Next, the long sheet cylinder making apparatus according to the present inventionAnd resin roll manufacturing methodA preferred embodiment will be described below with reference to the accompanying drawings. In addition, about the member same as the member already described by the term in the prior art, the same code | symbol is attached | subjected and the description is abbreviate | omitted. And in order to contribute to the understanding of the cylinder making apparatus according to the embodiment, an example in which the cylinder producing apparatus is disposed in a production apparatus for suitably producing a resin roll having a shaft using two long sheets will be described below. Explained. 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. Further, the term “cylindrical body” is intended to include a shape close to a perfect circle, an ellipse, and the like, and a polygonal shape with corners chamfered.
[0011]
The manufacturing apparatus 10 including the cylinder making apparatus according to the embodiment is basically configured in a linear line, and a plurality of the manufacturing apparatuses 10 are arranged in series from the upstream side to the downstream side of the manufacturing apparatus 10 as shown in FIG. A required number of forming pipes 20 and the first long sheet 92 (hereinafter referred to as the first sheet 92) and the second long sheet 94 (hereinafter referred to as the second sheet) are disposed at the uppermost stream thereof along the line. 94) and a long sheet feeding device 24 that continuously feeds the first sheet 92 and the second sheet 94 that are obtained by gradually forming the first sheet 92 and the second sheet 94 into a cylindrical shape. A long sheet cylinder 30 which is a long double cylinder 90 composed of a long cylindrical body 93 and an outer long cylindrical body 95, injection of the fluid resin material M into the cylindrical body 90, and the shaft 98. Raw material injection device 50 and shaft supply device 5 for performing the supply respectively. 2, a heating device 60 that heats the fluid resin material M in the cylindrical body 90, a roll long object tensioning device 70 that continuously pulls and transfers the cylindrical body 90 on the most downstream side of the pipe 20, A long sheet peeling device 72 that continuously peels 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 returns it to a long sheet, and the long material LR. It is basically composed of a roll cutting device 74 that cuts to a required length. Further, the resin roll R cut to the required length is subjected to post-processing such as grinding of the outer peripheral surface at the post-processing station 78 obtained. In the present embodiment, the upstream side and the downstream side refer to a starting point side and an ending point side in the manufacturing line, respectively, with a predetermined position as a base point.
[0012]
(About molded pipe 20)
  The molding pipe 20 has an inner diameter substantially equal to the outer diameter of the resin roll R to be finally obtained, and a plurality of the molding pipes 20 are arranged in series from the upstream side to the downstream side of the manufacturing line constituting the manufacturing apparatus 10.,It corresponds to each heating mechanism 62, 64, and 66 described below that performs heating for each part. The plurality of formed pipes 20 are arranged so that their central axes are aligned with each other, and the material of the formed pipes 20 can basically withstand heating to a predetermined temperature by the heating device 60 and induction heat generation described later. The use of so-called non-magnetic materials with low dielectric loss, such as glass sheets impregnated with highly heat-resistant epoxy resin, is encouraged to enable efficient heating of the flowable resin material M based on the principle and dielectric heat generation principle. Is done.
[0013]
(About the long sheet supply device 24)
The long sheet supply device 24 is arranged at the uppermost stream of a series of devices in the production line, and includes a first long sheet supply mechanism 26 including a roll body of the first sheet 92, and a roll of the second sheet 94. And a second long sheet supply mechanism 28 having a body, and restricts the outer shape of the resin roll R to be obtained by surrounding the fluid resin raw material M, and the resin roll R is formed inside the molded pipe 20. Both sheets 92 and 94 functioning as means for transporting are fed continuously or intermittently. In the present embodiment, the first sheet 92 and the second sheet 94 are used as long sheets that surround the fluid resin material M and mold the resin roll R. Note that the first sheet 92 and the second sheet 94 are supplied by being pulled by a roll elongate object pulling device 70 which will be described later ([0014]). The roll body may be actively driven and fed out.
[0014]
(About the roll long object tension device 70)
The roll long object pulling device 70 is basically a sandwich conveyor, and is disposed on the downstream side of the forming pipe 20 disposed on the most downstream side as shown in FIG. 90, a pair of belts 70a, 70a for continuously pulling and transferring the long resin roll LR contained in the belt 90 together with the double cylindrical body 90 under control. The sandwich conveyor composed of the pair of belts 70a and 70a is configured to be rotatable in the horizontal direction and synchronously, and is disposed so that the flat outer peripheral surfaces thereof face each other. Further, the pair of belts 70a, 70a can be arbitrarily separated from each other, and is configured such that a constant force is always urged in the direction in which the belts approach each other, whereby the diameter of the resin roll long object LR is set. It can be reliably held without depending on how much (the long double cylinder 90 alone). That is, the long double cylindrical body 90 is pulled downstream along with the long resin roll LR from both sides in a sandwich state.
[0015]
As described above, the first sheet 92 and the second sheet 94 serve as a means for restricting the outer shape of the resin roll R to be obtained by surrounding the fluid resin raw material M and transferring the inside of the pipe 20. It is. For this reason, both sheets 92 and 94 are heat resistant to the heat applied when the fluid resin material M is reacted and cured, the releasability from the resulting resin roll R, and when transported through the molding pipe 20. And a mechanical strength (tensile strength) that can withstand the tensile force of the roll long object tensioning device 70 is required. For example, paper or resin sheet having electrical insulation and surface release treatment is preferably used. Further, in the case of the present embodiment, in order to efficiently prevent leakage of the fluid resin raw material M contained and transported in the inside thereof, the longitudinal direction of the two first sheets 92 and second sheets 94 is met. A long double cylindrical body 90 having overlapping portions 92b and 94b in which both end edges 92a and 92a and 94a and 94a are overlapped is used (described later ([0020])). The required surfaces of both sheets 92 and / or 94 are subjected to processing that contributes to releasability from the obtained resin roll long article LR and processing that contributes to low friction with respect to the molded pipe 20.
[0016]
(About the long sheet cylinder 30)
As shown in FIG. 3, the long sheet cylinder device 30 is disposed between the long sheet supply device 24 and the most upstream forming pipe 20, and is a plurality of regulating members provided at a predetermined interval. The plate-like member 32 and a common base 38 that can support each plate-like member 32 upright. Then, the first sheet 92 and the second sheet 94 are gradually formed into a cylindrical shape, and finally allowed to pass through the forming pipe 20, and the longitudinal direction of each of the first sheet 92 and the second sheet 94 is determined. Both end edges 92a, 92a and 94a, 94a along the line are overlapped to form a long double cylindrical body 90. As shown in FIG. 4, the long double cylindrical body 90 is an inner long cylindrical body 93 that directly surrounds the flowable resin raw material M made of the first sheet 92 while preventing leakage. And an outer long cylindrical body 95 comprising the second sheet 94 and surrounding the long cylindrical body 93 from the outside. In the long sheet cylinder 30, the first sheet 92 and the second sheet 94 are formed into a cylindrical shape in cross section, that is, formed into both cylindrical bodies 93 and 94 in series along the production line. It is made by a plurality of plate-like members 32 arranged.
[0017]
The plurality of plate-like members 32 are individually provided with first slits 34 and second slits 36 that are substantially the same as the respective cross-sectional shapes required for the first sheet 92 and the second sheet 94 according to the arrangement positions thereof. The two sheets 92 and 94 can be inserted. The common base 38 which forms the main part of the long sheet cylinder 30 includes a plurality of grooves 38a in which the plurality of plate members 32 can be arranged orthogonal to the production line. ing. That is, each plate-like member 32 can be finely adjusted in the vertical and horizontal directions with respect to the production line by the common base 38 and is supported in series at a required interval. Specifically, the first sheet 92 and the second sheet 94 that pass through the first slits 34 and 36 are aligned with the central axis along the supply path with respect to the production line, and maintain a substantially parallel state here. It is configured as follows.
[0018]
As shown in FIG. 5, the first slits 34 and the second slits 36 are arranged at the positions where the plurality of plate-like members 32 are arranged along the production line. Each has a shape corresponding to the cross-sectional shape required for 94. That is, the first sheet 92 and the second sheet 94 pass through the long sheet cylinder 30 so that both end edges 92a, 92a and 94a, 94a along the longitudinal direction thereof overlap each other. At the same time, it is formed into a long cylindrical body 93 and a long cylindrical body 95 in which the resin roll R to be obtained and the central axis are aligned, and finally the long double cylindrical body 90 is configured. .
[0019]
In this way, the first sheet 92 and the second sheet 94 whose cross-sectional shapes are gradually changed to the long cylindrical body 93 and the long cylindrical body 95 are in the middle of the path of the long sheet cylinder 30. The cross-sectional shape is a U-shape, that is, an arc shape having a so-called upward opening state. In the later stage of forming the first sheet 92 and the second sheet 94 into the long cylindrical body 93 and the long cylindrical body 95, both the sheets 92 and 94 are substantially cylindrical, and the difference in shape is Absent. Therefore, depending on the position on the downstream side of the long sheet cylinder 30 or the like, the first sheet 92 and the second sheet 94 can be attached to the two cylinders 93 only by the second slit 36 formed in the plate member 32. , 95 (see FIG. 5). That is, regarding the plate-like member 32 on the required downstream side of the long sheet cylinder 30, the manufacturing cost of the plate-like member 32 can be reduced by providing only the second slit 36. .
[0020]
As shown in FIG. 6, the flowable resin raw material M is injected by the raw material injection device 50 and the shaft supply device 52 is used for the first sheet 92 having the upper opening state, that is, the state having the upper opening region. The shaft 98 is supplied (details will be described later ([0025])). And after injection | pouring of the said fluid resin raw material M and supply of the shaft 98 are performed, the upper opening in the said 1st sheet | seat 92 will close gradually, and the outer peripheral side is covered with the said 2nd sheet | seat 94. Become. At this time, the first sheet 92 and the second sheet 94 finally have a long cylindrical body 93 and a long sheet each having overlapping portions 92b and 94b in which the both end edges 92a and 92a and 94a and 94a are overlapped. Although the length of the second sheet 94 is set to be longer than the width of the first sheet 92, the long cylindrical body 93 is the long cylindrical body. 95 is completely covered, that is, completely covered. By adopting such a structure, even when the fluid resin raw material M in a fluid state leaks from the long cylindrical body 93, the raw material M leaks out of the long double cylindrical body 90. Can be avoided.
[0021]
(The direction in which both edges of both sheets are directed is opposite)
Further, the overlapping portions of both end edges 92a and 92a, that is, the covering of the outer long cylindrical body 95 to the inner long cylindrical body 93 in which the overlapping portion 92b is directed upward, From the viewpoint of preventing leakage of the fluid resin material M from the overlapping portion 92b, it is desirable that the overlapping portions 94b of the both end edges 94a and 94a of the two sheets 94 be spaced apart from each other. That is, as shown in FIG. 7, it is a structure that is entirely covered with an outer long cylindrical body 95 having a superposed portion 94 directed downward of an inner long cylindrical body 93 having a superposed portion 92b oriented upward ( (See FIG. 7 (a)). This sets the shape of the second slit 36 so that the second sheet 94 is gradually formed into an arcuate cross-sectional shape opened downward, and the flowable resin raw material M from the raw material injection device 50. The second sheet 94 can be supplied from above the long sheet cylinder device 30 so as not to interfere with the injection of the shaft and the supply of the shaft 98 by the shaft supply device 52. In addition, the directing direction of the overlapping portion 94b can be changed to a side other than the lower side.
[0022]
(Structure without overlapping edges)
Further, in this embodiment, both the end edges 92a and 92a of the first sheet 92 are overlapped to form the overlapping portion 92b, and the both end edges 94a and 94a of the second sheet 94 are overlapped to form the overlapping portion 94b. However, if the fluid resin material M has a structure capable of preventing leakage due to a high viscosity, for example, when only the both end edges 92a and 92a are overlapped (see FIG. 7B), the both end edges 94a , 94a (see FIG. 7 (c)) or both end edges 92a, 92a and 94a, 94a of both sheets 92 and 94 are overlaid (see FIG. 7 (d)). Can do. At that time, the directing direction of the overlapping portion 94b can be arbitrarily set by adjusting the supply position of the second sheet 94, the shape of the second slit 36, and the like.
[0023]
(Forming timing of both sheets)
In addition, about the shaping | molding timing of the 1st sheet | seat 92 and the 2nd sheet | seat 94 shape | molded separately by the said 1st slit 34 and the 2nd slit 36, the said fluid resin raw material M and the shaft 98 can be supplied, respectively. Any method may be used. Specifically, as described above, the first sheet 92 and the second sheet 94 are not formed at substantially the same time, for example, after the first sheet 92 is completely formed into the inner long cylindrical body 93, The second sheet 94 may be formed into the outer long cylindrical body 95. In the case of the present embodiment, this can be easily changed by the shapes of the slits 34 and the second slits 36 formed in the plurality of plate-like members 32.
[0024]
Further, as shown in FIG. 8, a long length provided with a plurality of rollers 102 that are arranged substantially perpendicular to the traveling (supply) direction of the second sheet 94 that forms the outside of the long double cylindrical body 90 as a regulating member. It is also possible to employ the sheet cylinder device 100. The plurality of rollers 102 are formed according to their arrangement positions, that is, the second sheet 94 is formed into the second cylindrical body 95 so as to form the second sheet 94 into the second 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. However, the first sheet 92 that is present inside the second sheet 94 and has a narrow width is formed on the second sheet 94. Since the first cylindrical body 93 is inevitably formed into the long cylindrical body 95, there is no particular problem. In addition to this, the long sheet cylinder device may be configured such that a block body continuously having a required shape in each part of the second slit 36 or the roll 102 is replaced with a required length conveyor.
[0025]
(About the raw material injection device 50 and the shaft supply device 52)
The raw material injection apparatus 50 is an apparatus that performs, for example, continuous injection of the fluid resin raw material M prepared in advance into the upper opening region of the first sheet 92 under control, and the fluid resin raw material M It is comprised by the nozzle connected with the raw material tank which is not shown in figure. As described above, the flowable resin raw material M used in this example is a raw material such as polyol and isocyanate that becomes a urethane resin by a mechanical floss method, and dry air or nitrogen that becomes a cell after reaction and curing with the raw material. It is manufactured by mixing with foaming gas such as inert gas. The fluid resin material M may be any resin material having fluidity that can be injected at the molding temperature. Depending on the physical properties required of the resin roll R to be obtained, Properties such as whether or not to foam are determined. As the material, for example, a general resin such as urethane, urea, NBR latex, acrylic latex, or PVC latex can be used. In particular, in view of the heating method of the present invention, the dielectric constant is 1.1 or more and the dielectric loss (coefficient) is 1 × 10.^-3It is preferable to use a substance exceeding. As described above, the raw material properties may be either solid, a foaming material by mechanical foaming or a foaming material that is chemically foamed as long as it is in a fluid state in the operating temperature range. The injection amount of the fluid resin raw material M injected from the raw material injection device 50 is set to be the volume of the resin roll R to be obtained by surrounding the supplied raw material M in the first sheet 92 that is sequentially transferred. It has been calculated. At this time, when the shaft 98 is supplied upstream of the raw material injection device 50, calculation is performed in consideration of the volumes of the shaft 98 and the positioning member 99. Further, when the flowable resin raw material M is a raw material by a chemical foaming method, it is necessary to consider the expansion ratio. The injection of the fluid resin raw material M by the raw material injection device 50 can be performed manually without any control, for example.
[0026]
Further, the shaft supply device 52 moves to the upper opening region in the first sheet 92 along the substantially central axis of the long resin roll LR to obtain the shaft 98 required for the resin roll R to be obtained (this embodiment). In the example, it is a device that supplies intermittently). In addition, regarding the arrangement positions of the raw material injection device 50 and the shaft supply device 52, the fluid resin raw material M and the shaft 98 are injected into the upper opening region of the first sheet 92 in the long sheet cylinder device 30. There is no particular problem as long as the position can be supplied. As the shaft 98, a solid or hollow material having a required length required for the resin roll R to be obtained is used. In addition, when the internal heating mechanism 62 using the induction heat generation principle is used in the heating device 60 described later ([0029]), at least the outer peripheral surface 98b is provided with a solid or hollow material provided with a material capable of induction heat generation. The material is used (solid structure in this example). As the substance, a magnetic material such as iron may be employed in order to efficiently carry out heat supply based on the principle of induction heat generation described later ([0029]). In addition, the resin roll R to be obtained is particularly lightweight. For example, when a property is required, a lightweight ABS resin may be employed, and a metal flake such as plating may be applied as the outer peripheral surface 98b of the shaft 98, which can be induction-heated. If the outer peripheral surface 98b is provided with such a substance that can generate induction heat, the internal substance may be stainless steel, glass, cement, or various resins such as POM (polyoxymethylene) or PES (polyethersulfone). It can be adopted. In addition, although the resin roll provided with the shaft is demonstrated in the present Example, the resin roll R which does not have this shaft 98 may be sufficient. In this case, in addition to the shaft supply device 52, the internal heating mechanism 62 (described later [0029]) for heating the fluid resin material M via the outer peripheral surface 98b of the shaft 98 is not necessary.
[0027]
The shaft 98 is supplied with both end portions 98a, 98a made of a non-magnetic material and positioning members 99, 99 having an inner diameter substantially equal to the outer diameter of the resin roll R to be obtained. The positioning member 99 is a member for supplying the central axis of the shaft 98 along the central axis of the resin roll R to be obtained. By attaching the member 99, the long cylindrical body 93 and the long cylindrical body are provided. The inner diameter of the body 95 can also be regulated. As the non-magnetic material constituting the positioning member 99, silicone rubber or the like whose material itself is elastic, or aluminum that is not elastic is suitable. The manufacturing apparatus 10 according to the present invention uses a so-called dummy shaft instead of the shaft 98 to once manufacture a resin roll with a shaft, and then pulls out the dummy shaft to form a hollow cylindrical resin. You may make it a roll and insert a required shaft member after that as needed. 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.
[0028]
(About sealing device 80)
In this embodiment, as shown in FIG. 9, the long sheet cylinder 30 moves the metal block 82 of a good heat conductor incorporating an electric heater in the vertical direction at a position immediately after the overlapping portion 92b is formed. A sealing device 80 is provided. The sealing device 80 abuts and is pressed against the overlapping portion 92b to locally and instantaneously react and cure the fluid resin material M in the pressed portion. Thus, by further reacting and curing the raw material M in a portion where the flowable resin raw material M may be leaked, further leakage of the raw material M is prevented. Further, instead of the metal block 82, a metal roller of a good heat conductor having a built-in electric heater may be used.
[0029]
(About the heating device 60)
The heating device 60 is disposed on the downstream side of the long sheet cylinder 30 and flows through the cylindrical apparatus 30 and is injected and supplied to the inside of the long double cylinder 90 in a transfer state. The amount of heat necessary for reaction and curing is supplied to the functional resin material M and the shaft 98. As shown in FIG. 10, the heating device 60 has a shaft 98 via an outer peripheral surface 98 b of the shaft 98 that is heated by an induction heating principle that applies an AC voltage to the induction coil 63 wound around the outer periphery of the formed pipe 20. And an internal heating mechanism 62 for selectively heating the inner peripheral region IP of the flowable resin raw material M, and a concentric arrangement on the outer peripheral portion of the molded pipe 20, and also generating heat by the induction heat generation principle. An outer heating mechanism 64 that heats the outer peripheral region OP of the flowable resin material M through the molded pipe 20 and a pair of electrodes 67 that are arranged to face each other with the pipe 20 interposed therebetween, The intermediate heating mechanism 66 that heats the intermediate region MP in the fluid resin material M sandwiched between the regions OP and IP by the principle of dielectric heating that applies a high frequency voltage to the base 67. It is actually configured. Further, the heating of the internal heating mechanism 62 allows the shaft 98 and the reacted / cured fluid resin material M to be adhered or bonded. Note that the cylindrical body 64a is not necessary when the molded pipe 20 at the external heating mechanism 64 is directly heated by heat generation or conduction heating according to the induction heat generation principle.
[0030]
Further, immediately before the intermediate heating mechanism 66, a preheating mechanism 68 for preheating (reheating in the present embodiment) is provided on the shaft 98 by the principle of induction heat generation. There is provided a heat retaining mechanism 69 for performing heat curing of the long resin roll LR by efficiently using the amount of heat supplied from each mechanism 62, 64 and 66 of the heating device 60 or by positively heating. Yes. 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. At the same time, if heating of the outer peripheral region MP is performed by conductive heating described later ([0031]), heating based on the principle of dielectric heating is not necessary.
[0031]
In the heating device 60, in the arrangement portion of the internal heating mechanism 62 and the external heating mechanism 64 that operate on the principle of induction heat generation, substances other than the shaft 98 to be heated, specifically, the first sheet 92 and the second sheet 94 are described. The fluid resin material M and the molded pipe 20 are preferably non-magnetic materials. Further, at the arrangement position of the intermediate heating mechanism 66 that operates based on the principle of dielectric heat generation, portions other than the intermediate region MP of the fluid resin raw material M to be heated, specifically, the first sheet 92 and the second sheet 94, and the molding pipe. About 20, it is desirable that the material has a small dielectric loss. In addition, since the said cylindrical body 64a exists in the outer peripheral part of the shaping | molding pipe 20, the direct heating by what is called conduction heating by the normal electric heater 65 grade | etc., Is also possible. In this case, as the cylindrical body 64a, for example, a metal having good heat conduction efficiency is preferably used.
[0032]
By passing through each apparatus so far, the resin roll long thing LR used as the base of the resin roll R which should be obtained is obtained. Therefore, for the obtained long resin roll LR, for example, peeling of the long double cylinder 90 that regulates the outer shape of the resin roll R or the like, and the resin roll The resin roll R is obtained by performing post-processing general such as cutting the long object LR to a required length. For each post-processing, various forms such as manual or automatic can be considered.
[0033]
(About the long sheet peeling device 72, the roll cutting device 74, and the post-processing station 78)
  The long sheet peeling device 72 peels the long double cylindrical body 90 from the long resin roll LR into a sheet shape, and the first sheet 92 and the second sheet 94 obtained by the sheet-like peeling. Both of these are wound and collected in a roll shape while being separately formed into a sheet by a long sheet collecting mechanism 72a and a second long sheet collecting mechanism 72b. Then, the first sheet 92 and the second sheet 94 collected in a roll form are left as they are, and the first sheet 92 and the second sheet 94 from the first long sheet supply mechanism 26 and the second long sheet supply mechanism 28 are left as they are. Two sheets 94 are supplied. The roll cutting device 74 mounts a cutter 74 a that reciprocates at a predetermined interval, and a long resin roll LR that peels and collects the first sheet 92 and the second sheet 94 from the long double cylindrical body 90. It is an apparatus that includes a possible base portion 74b, and is a resin roll R to be obtained by cutting the long resin roll LR to a required length (see FIG. 1). The position of the shaft 98 disposed inside the resin roll R to be manufactured can be detected or known in advance while being synchronized with the pulling speed of the roll long object pulling device 70 to cut between the shafts 98. LikeInHas been. AndBeforeA post-processing station 78 is provided on the downstream side of the roll cutting device 74 to perform post-processing such as grinding of the outer peripheral surface of the resin roll R cut to a required length (see FIG. 1). Post-processing performed at the post-processing station 78 includes processing of both ends of the resin roll R, that is, removal of the positioning members 99 and 99, cutting of the both ends 98a, and grinding of the outer peripheral surface of the resin roll R. Examples include achievement of roundness or exposure of a cell. Further, the minute step generated by the transfer of the overlapping portion 92b in the long cylindrical body 93 can be easily removed by the outer peripheral surface grinding. The resin roll R which should be obtained is obtained by processing by each apparatus so far.
[0034]
(About the guide sheet 76)
Then, the inner peripheral surface 20a of the molded pipe 20 has the inner peripheral surface 20a with the inner peripheral surface 20a to reduce friction with the long double cylinder 90 that is transferred while being in contact with the inner peripheral surface 20a. The guide sheet 76 may be continuously arranged extending in the longitudinal direction of the formed pipe 20, that is, over the entire length of the plurality of formed pipes 20 from the most upstream to the most downstream. As the material of the guide sheet 76, an aramid fiber is mainly used, which is woven into a required sheet shape and coated with a fluorine resin or a silicone resin. As the main body of the guide sheet 76, an aramid fiber, an aramid paper, a polyimide film, a PPS (polyphenylene sulfide) film, or the like can be used. In actual use, the guide sheet supply mechanism 22 including the roll-formed guide sheet 76 is disposed at the starting point set on the upstream side of the forming pipe 20 positioned on the most upstream side, and the guide sheet supplying mechanism 22 positioned on the most downstream side is disposed. A guide sheet collecting mechanism 23 having a predetermined driving means is disposed at an end point set on the downstream side of the forming pipe 20. The guide sheet 76 is led out from the guide sheet supply mechanism 22 as necessary, and can be wound up and collected in a roll shape by the guide sheet collection mechanism 23. The inner guide sheet 76 can be exchanged. The width dimension of the guide sheet 76 is set to be equal to or greater than the circumferential length of the inner peripheral surface 20a.
[0035]
The guide sheet 76 achieves both high heat resistance and low friction because of its material. The width dimension of the guide sheet 76 is set at least equal to or greater than the inner circumferential length of the inner circumferential surface 20a of the molded pipe 20, and is a dimension that can cover the entire inner circumferential surface 20a. In the guide sheet 76, the effect of reducing the frictional force generated between the long double cylindrical body 90 and the inner peripheral surface 20a and the harmful effects caused by the leakage of the fluid resin material M from the cylindrical body 90 are minimized. It can be expected that the effect is suppressed to a certain extent. For this reason, it is difficult to reduce the friction by directly applying the fluororesin or silicone resin to the inner peripheral surface 20a from the length and inner diameter of the molded pipe 20 and the required heat resistance. However, the presence of the guide sheet 76 is a very simple and effective alternative to low friction processing.
[0036]
[Example of change]
In the above embodiment, as the cylindrical body that regulates and surrounds the outer shape of the resin roll R, the long double cylindrical body 90 that is formed by duplicating the first sheet 92 and the second sheet 94 is used. The present invention is not limited to this. For example, the resin roll R may be manufactured using only the long cylindrical body 93 made of the long sheet by the long sheet cylinder 110 shown in FIG. Good. In this case, as shown in FIG. 12, both end edges 92a and 92a along the longitudinal direction of the long cylindrical body 93 are overlapped to form a superposed portion 92b. This is preferable from the viewpoint of ensuring prevention (see FIG. 12A). Moreover, while adjusting the viscosity of the fluid resin raw material M and using the sealing device 80, the resin roll R is manufactured in a state where the polymerization portion 92b is not formed (see FIG. 12B). Is also possible. The configuration of the long sheet cylinder device 110 is substantially the same as that of the long sheet cylinder device 30, and the second slits 36 are not formed in each plate member 32, and only the first slit 34 is used. It is different in that it is.
[0037]
In the production of the resin roll R using the long sheet cylinder 110, the second sheet 94 is not used, so that each device / mechanism related to the sheet 94 is unnecessary, and the initial investment cost and the device Expected to reduce operating costs. On the other hand, since the force per unit applied at the time of tension is larger than that of the long double cylindrical body 90, the first sheet 92 against the tensile force urged by the roll long object tension device 70 is increased. It is necessary to pay attention to the tensile strength. The long sheet cylinder 100 described above ([0024]) can also be employed.
[0038]
[Another change]
In addition, the width dimension of the second sheet 94 is shortened, and the long sheet cylinder 120 as shown in FIG. 13 is used in the longitudinal direction of the long cylindrical body 93 made of the long sheet as shown in FIG. The resin roll R may be manufactured so as to cover between the two end edges 92a, 92a along the top and the overlapping portion 92b formed by overlapping the both end edges 92a, 92a. The configuration of the long sheet cylinder device 120 is substantially the same as that of the long sheet cylinder device 110 described above, and the second slits 36 are not formed in each plate-like member 32 but only the first slits 34. In addition, the second sheet 94 continuously supplied from the long sheet supply device 24 (second long sheet supply mechanism 28) is disposed on the downstream side of the raw material injection device 50 and the shaft supply device 52. The second long sheet guide device 40 is configured to guide and give the first sheet 92 to a predetermined position. The second long sheet supply mechanism 28 may be integrated with the second long sheet guide device 40 as a separate body from the long sheet supply device 24.
[0039]
The second sheet 94 does not cover the entire long cylindrical body 93 made of the first sheet 92, but is formed between both end edges 92a and 92a along the longitudinal direction of the cylindrical body 93 or from the overlapping portion 92b. It only needs to be present to such an extent that leakage of the fluid resin material M can be avoided. Further, in order to efficiently avoid leakage of the fluid resin raw material M by the second sheet 94, it is preferable to provide a required adhesive means on the side of the second sheet 94 that contacts the long cylindrical body 93. . Instead of this adhesion means, a required adhesion means may be adopted.
[0040]
In the production of the resin roll R using the long sheet cylinder device 120, since the second sheet 94 having a short width is used, the cost associated with the sheet 94 is reduced and the handling thereof is facilitated. This can be expected to reduce the operating cost of the device. On the other hand, since the force per unit applied at the time of tension is larger than that of the long double cylindrical body 90 as in the above-described modified example, the tension urged by the roll long object tension device 70 is increased. It is necessary to pay attention to the tensile strength of the first sheet 92 against force. It should be noted that the long sheet cylinder device 100 described above ([0024]) can also be adopted for another modification described here.
[0041]
【The invention's effect】
  As described above, according to the long sheet cylinder making apparatus according to the present invention, the flowable resin raw material is surrounded by the long sheet supplied to the cylinder making apparatus and is passed through the downstream forming pipe. Is formed into a cylindrical shape that can be used, and therefore a molded pipe having an inner diameter substantially equal to the outer diameter of the resin roll to be obtained is used, and a flowable resin is used by using a long sheet that regulates the outer shape of the resin roll. While transporting the raw material, heat and react and cure at least according to the principle of dielectric heating, and continuously and at least in the axial direction (longitudinal direction) and further in the radial direction, there is no difference in physical properties, and a resin roll that is substantially the same is manufactured. obtain. Further, by adjusting the plate-like member or the like in accordance with conditions such as the hardness of the long sheet to be formed, it can be satisfactorily formed into a required cylindrical body. Further, since it is possible to deal with the long sheet as a double sheet, it is possible to efficiently prevent leakage of the flowable resin material transferred through the molded pipe.
  According to the resin roll manufacturing method of the present invention, the guide sheet reduces the frictional force generated between the long sheet formed into a cylindrical shape and the inner peripheral surface of the molded pipe, and the long sheet. It can be expected that the adverse effects caused by leakage of the fluid resin raw material from the water will be suppressed to a slight extent.
[Brief description of the drawings]
FIG. 1 is a schematic side view showing an entire production apparatus for a resin roll with a shaft according to a preferred embodiment of the present invention.
FIG. 2 is an enlarged perspective view showing a part of the roll long object tension device according to the embodiment.
FIG. 3 is an enlarged perspective view showing a portion of the long sheet tube manufacturing apparatus according to the embodiment.
FIG. 4 is a cross-sectional view showing a long double cylindrical body in a molded pipe according to an example.
FIG. 5 is an explanatory diagram showing the shape of each slit and second slit in a plurality of plate-like members constituting the long sheet cylinder shown in FIG. 3 along the flow of the production line.
6 is an injection of a fluid resin material, a shaft supply, and a long cylindrical body and a long cylinder of a first long sheet and a second long sheet, which are carried out in the long sheet cylinder device shown in FIG. It is process drawing which shows each shaping | molding to a body in steps.
FIG. 7 is a cross-sectional view showing a difference in structure of the overlapping portion or both end edges in the longitudinal direction in the form of overlapping portions in the long sheet and the second long sheet.
FIG. 8 is a perspective view showing an outline of a long sheet cylinder manufacturing apparatus that obtains a long double cylindrical body from a first sheet and a second sheet using a roller, and a sectional view of each cylinder stage.
FIG. 9 is an enlarged perspective view showing a part of the sealing device according to the embodiment.
FIG. 10 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. 11 is an enlarged perspective view showing a part of a long sheet cylinder device in a manufacturing apparatus according to a modified example in which a resin roll is manufactured using a single long sheet.
FIG. 12 is a schematic cross-sectional view showing a joint portion of both end edges along the longitudinal direction of the long sheet in the modified row.
FIG. 13 is an enlarged view of a part of a long sheet cylinder device in a manufacturing apparatus according to another modification example in which a resin roll is manufactured using a first long sheet and a second long sheet having a short width. It is a perspective view.
FIG. 14 is a schematic cross-sectional view showing a joint portion of both end edges along the longitudinal direction of the first long sheet in another modified row.
FIG. 15 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 the prior art.
16 is a cross-sectional view showing an internal state when a resin roll is formed on the roll forming mold shown in FIG. 15. FIG.
FIG. 17 is a configuration diagram schematically showing a resin roll manufacturing apparatus and process using a roll molding die in manufacturing a resin roll according to the prior art.
18 is a state diagram showing a state of the raw material when a fluid resin raw material is injected into the roll molding die shown in FIG.
[Explanation of symbols]
  20 Molded pipe
  20a Inner peripheral surface
  30 Tube making equipment
  32 Restriction member (plate-like member)
  34 Slit (first slit)
  36 slit (second slit)
  38 Common base
  40 Second long sheet guide device
  76 Guide sheet
  90 Long double cylinder
  92 Long sheet (first long sheet)
  92a Both end edges along the longitudinal direction
  92b superposition part
  93 Long cylinder (inner long cylinder)
  94 Long sheet (second long sheet)
  94a Both end edges along the longitudinal direction
  94b Superposition part
  95 Long cylindrical body (outer long cylindrical body)
  98 shaft
  98b Outer peripheral surface
  100 Tube making equipment
  102 Restriction member (roller)
  110 Tube making equipment
  120 Tube making device
  130 Tube making equipment
  LR long resin roll
  M Fluid resin raw material M
  R resin roll

Claims (11)

In the required number of molded pipes (20) having an inner diameter substantially equal to the outer diameter of the resin roll (R) to be obtained and arranged in series from the upstream side to the downstream side of the production line, the flowable resin raw material (M ) With a long sheet (92, 94) is transferred, and in the transfer process, the fluid resin material (M) is heated and reacted and cured at least according to the principle of dielectric heating, whereby a long resin roll is obtained. (LR) is a cylinder-making apparatus that is used in a process of manufacturing the long sheet (92, 94) as a long cylindrical body (93, 95),
The long sheet (92, 94) is gradually formed into a cylindrical shape and configured to allow internal passage of the formed pipe (20) , and
In the process of gradually forming the long sheet (92, 94) into a cylindrical shape, the flowable resin material (M) is injected into the long sheet (92, 94) and the long resin roll to be obtained. A long sheet cylinder making apparatus characterized in that a shaft (98) or a dummy shaft having a required length along a substantially central axis of the object (LR) is supplied . A long sheet (92, 94) with a fluid resin raw material (M) is transferred into the required number of molding pipes (20) arranged in series from the upstream side to the downstream side of the production line, and the In the transfer process, the flowable resin material (M) is heated to react and harden to be used to produce a long resin roll (LR), and the long sheets (92, 94) are long. A cylinder-making apparatus having a cylindrical body (93, 95) of
The long sheet (92, 94) is gradually formed into a cylindrical shape and configured to allow internal passage of the formed pipe (20), and
In the process of gradually forming the long sheet (92, 94) into a cylindrical shape, the flowable resin material (M) is injected into the long sheet (92, 94) and the long resin roll to be obtained. It is configured to supply the shaft (98) or dummy shaft of the required length along the approximate center axis of the object (LR).
A long sheet cylinder making apparatus. The cylinder making device (30, 100, 110, 120, 130) includes a regulating member (32, 102), and the regulating member (32, 102) passes through the molded pipe (20) by regulating the outer shape of the long sheet (92, 94). manufacturing tube apparatus of a long sheet of claim 1 or 2 wherein is gradually formed into a cylindrical shape can tolerate. The cylinder making device (30, 110, 120, 130) includes at least one plate as the restricting member having slits (34, 36) that allow passage of the long sheets (92, 94) that are continuously supplied. And a common base (38) that supports the plate-like member (32) upright at a required interval by aligning the plate-like member (32) with a central axis along the supply path of the long sheets (92, 94). Thus, the shape of the slits (34, 36) in the plate-like member (32) is changed stepwise so that the long sheets (92, 94) can be gradually formed into a cylindrical shape. The long sheet cylinder-making apparatus as described in any one of -3 . As the long sheet, a first long sheet (92) and a second long sheet (94) are used, and the first long sheet (92) is formed into a long cylindrical body (93). The second elongate sheet (94) is guided by a second elongate sheet guide mechanism (40) provided at a required position of the cylinder making apparatus (120), and the fluid resin from the elongate cylindrical body (93). The long sheet cylinder making apparatus according to any one of claims 1 to 4 , which is coated to prevent leakage of the raw material (M). As the long sheet, a first long sheet (92) and a second long sheet (94) wider than at least the first long sheet (92) are used. The first long sheet (92) Is formed into a first long cylindrical body (93) constituting the inside of the long double cylindrical body (90), and the second long sheet (94) is formed into the first long cylindrical body (93). The long sheet cylinder making apparatus according to any one of claims 1 to 4, which is formed into a second long cylindrical body (95) covering the outside of the long sheet . The plate-like member (32) has a first slit (34) allowing passage of the first long sheet (92) and a second slit (36) allowing passage of the second long sheet (94). The long sheet according to claim 6, wherein one slit serves as both the first slit (34) and the second slit (36) depending on the position of the cylinder-making device (30). Tube device. Both end edges (92a, 92a, 94a, 94a) along the longitudinal direction of the long sheet (92, 94) are overlapped with each other to form a superposed portion (92b, 94b). manufacturing tube apparatus of a long sheet according to any one of 7. Said shaft (98) or dummy shaft least be also used materials may be induction heating on the outer peripheral surface (98b), said at least induction heating principle amount of heat required for the reaction and curing of the fluid resin material (M) The long sheet cylinder making apparatus according to any one of claims 1 to 8, which is supplied by the apparatus. In the process of gradually forming a long sheet (92,94) into a cylindrical shape, the long sheet (92,94) is injected with a flowable resin raw material (M) and a long resin roll to be obtained ( Supply the required length of shaft (98) or dummy shaft along the approximate center axis of (LR),
  Required number of guide sheets (76) arranged in series from the upstream side to the downstream side of the production line and covering the entire inner peripheral surface (20a) so as to cover all of the inner peripheral surface (20a) In the molded pipe (20), the long sheet (92, 94) with the flowable resin raw material (M) is transferred,
  The flowable resin material (M) is heated and reacted and cured in the process of being transferred through the molded pipe (20) to produce a long resin roll (LR).
A method for producing a resin roll characterized by the above. The shaft (98) or the dummy shaft is made of a material that can generate induction heat at least on the outer peripheral surface (98b), and is required for the reaction / curing of the fluid resin material (M) on the shaft (98) or the dummy shaft. The method for producing a resin roll according to claim 10, wherein the amount of heat is supplied by at least the principle of induction heat generation.

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