JP4662813B2 - Roving load - Google Patents

Description

  The present invention relates to a roving load in which a plurality of roving packages in a form in which a roving wound body formed by winding a roving formed of glass fiber yarn or the like is covered with a bag are stacked.

A roving formed of glass fiber yarn or the like used as a reinforcing material for SMC molding or the like is wound into a substantially cylindrical shape having a hollow portion on the central axis to form a roving winding body. Often shipped in the form of a roving package covered with a bag such as a shrink bag so that an opening is formed at a position facing one end of the section, and when using, the roving is pulled out from the inner peripheral side of the roving roll (For example, refer to Patent Document 1). This type of roving package is generally by weight,
・ Kodama (about 15-20kg)
・ Large ball (about 50-300kg)
It is divided into. In addition, the thing of 50-100 kg may be called a center ball.

  Large, large roving packages are not shipped in stacks, and are not used in a stacked state even when in use, but multiple lightweight small roving packages are stacked, with the upper roving roll Are shipped in a form in which the roving end portion on the outer peripheral side is connected to the roving end portion on the inner peripheral side of the lower roving winding body, and is used in a stacked state even in use. FIGS. 8A and 8B show the usage state of the stacked roving packages, where 1 is the roving package, 2 is the roving roll, 3 is the roving, 3a is the outer periphery of the upper roving roll 2 The side roving ends 3 b are roving ends on the inner peripheral side of the lower roving winding 2, and are connected to the roving ends 3 a from the upper roving winding 2. 4 is a bag such as a shrink bag covering the roving roll 2, 4 a is an opening formed on the upper surface of the bag 4 at a position facing the upper end of the hollow portion of the roving roll 2, and 6 is from the roving roll 2. This is a cutting device that pulls out the roving 3, cuts it to a certain length and discharges it, and includes a feed roller 7, a cutter roller 8, and the like. When the roving package 1 is used, as shown in FIG. 8A, the roving 3 is pulled out from the inner peripheral side of the upper roving wound body 2 by the feed roller 7 and the cutter roller 8 of the cutting device 6, and is fixed in length. And used as a reinforcing material for SMC molding or the like. Then, when the upper stage roving winding body 2 is eliminated, the roving 3 is continuously pulled out from the inner peripheral side of the lower roving winding body 2 and used as shown in FIG. 8B. Here, since the bag 4 covering the upper roving roll 2 is on the lower roving package 1 for the time being even after the inner roving roll 2 is lost, The roving 3 drawn out from the lower roving roll 2 is drawn through between the upper surface of the lower roving package 1 and the bag 4 riding on the upper roving package 1. Because it was light, there was no particular problem.

Recently, in order to improve work efficiency, it has been attempted to ship and use 50 to 200 kg roving packages in a stacked state. However, when these medium or large roving packages were stacked and used, it was found that there was a problem. That is, as shown in FIG. 8 (b), when the use of the upper roving winding body is finished and the drawing of the roving 3 from the lower roving winding body 2 is started, Since a load is applied and the bag 4 used for the medium or large ball becomes as large as about 100 g, a large resistance is given to the pulling out of the roving 3, the pulling tension of the roving 3 is suddenly increased, and the roving 3 is cut. In some cases, the feed roller 7 of the apparatus 6 and the cutter roller 8 do not enter and the cutting failure occurs. In particular, a shrink bag made of a vinyl chloride resin has been used as the bag 4 in the past, but in recent years, it has been changed to a shrink bag made of polyolefin as a measure against vinyl chloride, and the rigidity of polyolefin is low. A bag thicker than a vinyl bag is used, which increases the weight and causes problems.
Japanese Patent Publication No. 7-10708

  The present invention has been made in view of such problems, and even when a heavy roving package is used in a stacked state, the roving drawer is moved from the upper roving roll to the lower roving roll. It is an object of the present invention to provide a roving load that is not accompanied by a large increase in tension sometimes, thereby preventing a roving cutting failure.

  The present invention provides a roving package comprising a substantially cylindrical roving wound body having a hollow portion on a central axis, and a bag covering the roving winding body and having an opening at a position facing one end of the hollow portion. Spacer made of an elastic body having a characteristic of being compressed to 70% or less of the thickness under no load when a load of 50 kg is applied between the roving packages in a roving load in which a plurality is stacked. Further, the passage allows the roving from the inner peripheral side of the lower roving winding body to be drawn out from the outer peripheral surface of the roving package between the roving packages arranged above and below the spacer. When the roving is pulled out from the lower roving roll, the roving is placed on the upper side by the spacer. As the load of the bag is not applied to the rovings by pulling out through a passageway formed between the lower side of the roving package and the tension of the drawer is obtained by so as not to increase suddenly.

Furthermore, the present invention is also characterized in that the roving end portion of the outer peripheral side of the upper roving winding body is coupled to the roving end portion of the inner peripheral surface of the lower roving winding body. This configuration user who obtain this roving cargo uses rovings cargo as it is, by starting roving drawn from the upper side of the roving wound body, continuously all stages of roving Makitai Can be used by pulling out rovings.

  The thickness of the spacers with no load is preferably set to 20 to 100 mm, which can secure a sufficient passage for the lower roving drawer and suppress the space between the upper and lower roving packages to be small. The roving package can be prevented from becoming unstable.

  The spacer preferably has a property that the thickness is compressed to 20 mm or less when a load of 50 kg is applied to the whole, and this also suppresses the interval between the upper and lower roving packages, It is possible to further prevent the stacked roving package from becoming unstable.

  The weight of the spacer is preferably 400 g or less, which can prevent the lower bag supporting the spacer from being crushed when most of the lower roving roll is used.

  The roving roll may be one obtained by winding a roving of an arbitrary material, but a roving roll formed by winding a glass fiber roving is preferable. The weight of the roving roll is preferably in the range of 50 to 200 kg.

The roving load of the present invention has a structure in which the roving package is stacked through the spacer formed of an elastic body, so that when the upper roving roll is used up and the roving is pulled out from the lower roving roll, The roving can be pulled out through the passage formed between the upper bag and the lower roving package by the spacer, and the weight of the upper empty bag is added to the roving pulled out from the lower roving roll. Therefore, it is possible to continue the pulling out of the roving stably without causing troubles such as cutting failure without giving a large resistance and increasing the tension rapidly. In addition, the spacer is formed of an elastic body having a large compression amount so as to be compressed to 70% or less of the thickness when no load is applied when a load of 50 kg is applied to the spacer. , The space between the upper and lower roving packages becomes shorter due to compression and becomes a more stable load.On the other hand, when the upper roving roll is used up, the upper bag becomes empty and lighter when used. The bag is lifted by the elastic force, and the height of the passage through which the roving is pulled out from the lower roving roll is increased so that the roving is easy to pass, and an increase in tension at the time of switching the roving roll can be suppressed satisfactorily. Furthermore, since the spacer is formed of an elastic body that can be greatly deformed, the spacer is compressed when the roving package is placed on the spacer, and a large number of rovings existing on the surface of the roving package in contact with the spacer. It is deformed into a shape that follows the uneven surface formed by and supports the roving package in that state, so that a large load does not act on the roving locally. It is possible to avoid roving damage such as collapse of fiber bundles. Moreover, although the end surface of the roving roll may have a small inclination, even in that case, the roving package can be stably supported by the large deformation of the spacer, and a stable load can be formed. Furthermore, since the outer roving end of the upper roving roll is connected to the inner roving end of the lower roving roll, starting the roving pull out from the upper roving roll The roving can be used by continuously pulling out the roving from all the roving rolls.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 (a) is a schematic side view of a roving load according to a preferred embodiment of the present invention, FIG. 1 (b) is a schematic cross-sectional view of the roving load, and FIG. FIG. 3A is a schematic cross-sectional view illustrating a usage state of the roving load, and FIG. 4 is a schematic perspective view illustrating an example of a spacer used for the roving load. The same parts as those in the conventional example shown in FIG. In FIG. 1 to FIG. 3, a roving load generally indicated by reference numeral 11 has a structure in which a plurality of (two in the embodiment of the drawings) roving packages 1 are stacked via spacers 12.

  The roving package 1 faces a roving wound body 2 obtained by winding a roving 3 made of glass fiber yarn or the like into a substantially cylindrical shape having a hollow portion on a central axis, and one end of the hollow portion of the roving wound body 2. It is a structure provided with the bag 4 which coat | covered the roving winding body 2 in the form which forms the opening part 4a in a position. The bag 4 is made of a heat-shrinkable film such as a polyolefin-based resin, and covers the roving roll 2 by putting the roving roll 2 and then performing heat shrinkage. The bag 4 has a strength capable of supporting itself even after the roving roll contained therein is used, and the roving 3 wound around the outer peripheral surface of the roving roll 2 is heated on the inner peripheral surface thereof. It is bonded by an appropriate bonding means such as an adhesive film or an adhesive. With this configuration, the roving 3 can be pulled out from the inner peripheral surface side of the roving roll 2 through the opening 4a and used, and most of the roving of the roving roll 2 is finished, and the outer periphery of the roving roll 2 When only the region roving remains, the outer region roving is held on the inner peripheral surface of the self-supporting bag 4 so that it does not collapse and become tangled, and all the rovings of the roving roll 2 can be used up without any trouble. it can. Examples of the roving package 1 having such a configuration include those described in Patent Document 1, but are not limited thereto.

  The weight of the roving package 1 forming the roving load 11 is not particularly limited, but is preferably selected to be about 50 kg to 200 kg. This is because when the weight of the roving package 1 is less than 50 kg, the emptied bag 4 is light, so the resistance applied to the roving 3 drawn from the lower roving roll 2 is small, and there is not much problem. This is because there is almost no stacking when exceeding.

  The spacer 12 disposed between the roving packages 1 and 1 stacked one above the other is formed of an elastic body (details will be described later) that can be largely compressed and deformed. The shape of the elastic body used as the spacer 12 is not particularly limited, but a simple rectangular parallelepiped shape as shown in FIG. 4 is preferable because it can be obtained at low cost. When the rectangular parallelepiped spacer 12 is used, a plurality of spacers 12 are arranged in a state of being appropriately dispersed in the circumferential direction as shown in FIG. 2 so that the upper roving package 1 can be stably supported. At this time, the plurality of spacers 12 pull out the roving 3 drawn from the inner peripheral surface of the lower roving package 1 to the outside of the outer peripheral surface of the roving package 1 between the upper and lower roving packages. It arrange | positions in the form which leaves the passage 14 to accept | permit. The width w of the passage 14 is preferably set to 50 mm or more so that the roving 3 being pulled out does not come into contact with the spacer 12 even if the roving 3 is shaken. The arrangement of the spacers 12 is not limited to the form shown in FIG. 3 and may be arranged at a constant pitch in the circumferential direction as shown in FIG. Also in this case, the size of the spacer is determined so that a passage 14 having a desired width w for pulling out the roving 3 is formed between the adjacent spacers 12 and 12. Further, the present invention is not limited to the case of using a plurality of spacers 12 made of a rectangular parallelepiped elastic body, but as shown in FIG. 5B, from a single elastic body having a shape in which a part of a donut-shaped circumference is cut out. A spacer 12 may be used. In this case, since the notched portion of the spacer 12 becomes a passage 14 for passing the roving 3, the width w is set to a width suitable for the roving passage. The spacer 12 is attached to the roving package 1 by an appropriate adhesive means such as double-sided tape.

  As described above, the spacer 12 is formed of an elastic body that can be largely compressed. Specifically, the spacer 12 is formed of an elastic body having such a characteristic that when a load of 50 kg is applied to the entire surface supporting the roving package 1, the spacer 12 is compressed to 70% or less of the thickness when no load is applied. Since the elastic body having such characteristics is used for the spacer 12, the spacer 12 is compressed and thinned in a state where the roving package 1 is supported, as shown in FIGS. The distance d between 1 and 1 is reduced, and a stable load can be obtained. Further, as shown in FIG. 3B, after the use of the roving winding body of the upper roving package is finished, the spacer 12 is in a state of supporting only the empty bag 4, and thus returns to the original thickness. For this reason, the distance e between the lower roving package 1 and the upper empty bag 4 (that is, the height of the passage 14) e is increased, and a height suitable for pulling out the roving 3 can be secured. Further, when the roving package 1 is placed on the spacer 12, the spacer is compressed, and the shape follows the uneven surface formed by a large number of rovings existing on the surface of the roving package 1 in contact with the spacer. In order to support the roving package 1 in this state, there is no local large load acting on the roving, and this avoids damage to the roving such as leaving marks on the roving or collapsing the fiber bundle forming the roving. it can. In order for the spacer 12 to exhibit such an effect, it is desirable that the spacer 12 is greatly compressed while the roving package 1 is supported by the spacer 12. As a result of confirmation by the present inventors, when the roving package 1 is placed on the spacer 12 and the thickness of the spacer 12 is compressed to 70% or less of the thickness when no load is applied, the above-described case is described. The effect was secured. As described above, since most of the roving packages 1 forming the roving load have a weight of 50 kg or more, the spacer 12 has a thickness when no load is applied when a load of 50 kg is applied to the entire surface thereof. By using a material that is compressed to 70% or less, the above-described effects can be secured. The spacer 12 has a greater effect of stabilizing the load and preventing damage to the roving as the amount of compression with the roving package 1 mounted is larger. Therefore, the spacer 12 has a load of 50 kg on the entire surface. It is preferable to use a material that is compressed to 50% or less of the thickness when no load is applied, and more preferably a property that is compressed to 70% or less.

  The thickness h of the spacer 12 when no load is applied is preferably 20 to 100 mm. When the unloaded thickness h is less than 20 mm, the height e of the passage 14 is as small as less than 20 mm even when the empty bag 4 is supported as shown in FIG. It may be difficult to pass the roving 3 pulled out when it is shaken up and down. On the other hand, if the thickness h exceeds 100 mm, even when the roving package is placed and compressed, the distance d between the upper and lower roving packages 1 and 1 becomes large and becomes unstable, and the ease of passing the roving is as follows. A thickness exceeding 100 mm is not necessary. The spacer 12 is preferably made of an elastic body having a characteristic that the thickness is compressed to 20 mm or less when a load of 50 kg is applied to the entire surface supporting the roving package 1. By using the spacer 12 having this characteristic, as shown in FIG. 1, the interval d between the roving packages in a state where the roving packages 1 and 1 are stacked is 20 mm or less, and the load is more stable.

  The spacer 12 is supported by the lower roving package 1 and is supported only by the bag 4 when the lower roving roll 2 is almost used up. At that time, it is preferable to make the spacer 12 as light as possible so that the bag 4 is not crushed by the weight of the spacer 12. Specifically, the spacer 12 is preferably 400 g or less, which prevents the bag 4 from being crushed and allows the roving 3 to be pulled out to the end.

  The material for forming the spacer 12 is arbitrary as long as it has the above-mentioned characteristics, but as a suitable material, a sponge-like foamed resin can be exemplified, and in particular, the urethane foam is lightweight and greatly elastically deformed. This is preferable because it is possible.

  In FIG. 1, the outer roving end 3 a of the upper roving winding 2 is connected to the inner roving end 3 b of the lower roving winding 2. The connection between the roving ends 3a and 3b is performed at the stage where the roving load 11 before shipping is created. However, depending on the case, it may be performed when the roving load 11 is used. The roving load 11 created in the form shown in FIG. 1 (a) is shipped on a pallet if necessary, and the whole is packaged with a stretch film or stored in a suitable cardboard box. In addition, the roving package 1 of about 50 kg, which is not so large, has a plurality of roving loads 11 (four sets in the drawing) stacked in two stages, as shown in FIGS. The entire product is packaged with a stretch film or stored in a suitable cardboard box.

  When the roving load 11 is used, as shown in FIG. 3A, the roving packages 1 and 1 are used while being stacked. That is, the roving 3 is drawn from the inner peripheral side of the upper roving roll 2 by the feed roller 7 and the cutter roller 8 of the cutting device 6, cut into a predetermined length, and used as a reinforcing material for SMC molding or the like. Then, when the upper stage roving winding body 2 is eliminated, the roving 3 is subsequently pulled out from the inner peripheral side of the lower roving winding body 2 as shown in FIG. At this time, the bag 4 covering the upper roving roll 2 is still on the lower roving package 1 for the time being even after the inner roving roll 2 is lost. The roving 3 drawn out from the lower roving roll 2 is drawn through a passage 14 formed between the spacers 12, and the height e of the passage 14 is increased by the restoring force of the spacer 12. Therefore, the bag 4 does not give resistance to the roving 3, and therefore, the tension of the drawn roving 3 hardly increases. For this reason, even when the roving 3 is switched from the upper roving roll 2 to the lower roving roll 2 and pulled out, the tension of the roving 3 does not increase suddenly, and troubles such as defective cutting are caused. The roving can be pulled out stably without being generated, so that all the rovings of the stacked roving packages 1 and 1 can be used satisfactorily.

  The preferred embodiments of the present invention have been described above, but the present invention is not limited to these embodiments, and it is needless to say that the embodiments can be appropriately changed within the scope of the claims.

(A) is a schematic side view of the roving load according to a preferred embodiment of the present invention, and (b) is a schematic cross-sectional view of the roving load. Schematic cross-sectional view taken along line AA in FIG. (A), (b) is a schematic sectional drawing explaining the use condition of the roving load shown in FIG. The schematic perspective view which shows one example of the spacer used for the roving load shown in FIG. (A), (b) shows the modification of a spacer, respectively, The schematic sectional drawing of the same part as FIG. Schematic side view showing a state where a plurality of roving loads are placed on a pallet Schematic plan view showing a state where a plurality of roving loads are placed on a pallet (A), (b) is schematic sectional drawing explaining the use condition of the conventional roving load

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Roving package 2 Roving roll 3 Roving 3a, 3b Roving edge part 4 Bag 4a Opening part 6 Cutting device 7 Feed roller 8 Cutter roller 11 Roving load 12 Spacer 14 Passage 20 Pallet

Claims (5)

A plurality of roving packages each including a substantially cylindrical roving winding body having a hollow portion on a central axis and a bag covering the roving winding body and having an opening at a position facing one end of the hollow portion. A roving load comprising a spacer made of an elastic body disposed between the roving packages, and the spacer is 70% or less of the thickness when no load is applied when a load of 50 kg is applied to the whole. Further, the spacer has a property of being compressed, and the spacer pulls out the roving from the inner peripheral side of the lower roving winding body to the outer side of the outer peripheral surface of the roving package between the roving packages arranged vertically. They are arranged in the form to leave a passage for allowing the further roving end portion of the outer peripheral side of the upper roving winding body of the inner peripheral surface of the lower roving winding body Roving cargo, characterized in that it is connected to the Bingu end. The roving load according to claim 1, wherein an unloaded thickness of the spacer is 20 to 100 mm . The roving load according to claim 1 or 2 , wherein the spacer has a characteristic that the thickness is compressed to 20 mm or less when a load of 50 kg is applied to the spacer as a whole . The roving load according to any one of claims 1 to 3 , wherein a weight of the spacer is 400 g or less . The roving load according to any one of claims 1 to 4, wherein the roving roll is a roving roll formed by winding a glass fiber roving and has a weight of 50 to 200 kg .

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