JPWO2011118023A1 - Composite paper tube making machine - Google Patents

Abstract

A metal mandrel (2), and a winding belt (3) for winding a thin and strip-shaped metal web (7) and a paper web (14) around the mandrel (2) in a spiral shape, the inner surface of the metal web A winding device (19) for forming the composite paper tube (17) comprising (7), and a coating layer covering the outer peripheral surface of the mandrel (2), the coating layer on the outer peripheral surface as one bus There is an exposed area that is lined up with a distance. In addition, it is preferable that the said coating layer is a coating tape wound in a spiral shape at intervals along the longitudinal direction of the said mandrel.

Description

  The present invention relates to a composite paper tube manufacturing machine.

A spiral paper tube manufacturing apparatus is disclosed in Patent Document 1. As described in Patent Document 1, a spiral paper tube is manufactured by winding a fed paper around a mandrel in a spiral shape. The paper is tightly wound around the mandrel by a wrapping belt. However, when the material in contact with the mandrel is made of metal, that is, when an attempt is made to manufacture a composite paper tube with the metal web arranged on the inside, the mandrel is also made of metal, so that they are welded to each other by frictional heat. . If it is welded, the metal web will not be delivered any further and the operation must be stopped.
Conventionally, in order to prevent this, discarded paper is disposed between the mandrel and the metal web. The use of this discarded paper leads to an increase in cost, and further requires a work for removing the discarded paper, resulting in poor work efficiency.

JP 2001-62945 A

  The present invention is based on the above prior art, and even if the layer in direct contact with the metal mandrel is a metal web, the two are prevented from being welded to each other by frictional heat, thereby improving work efficiency. An object of the present invention is to provide a composite paper tube manufacturing machine capable of reducing the manufacturing cost.

  In order to achieve the object, the invention of claim 1 includes a metal mandrel, and a winding belt for spirally winding a thin strip-shaped metal web and a paper web around the mandrel, and an inner surface is formed from the metal web. A winding device for forming the composite paper tube, and a coating layer covering the outer peripheral surface of the mandrel, and the coating layer leaves an exposed area arranged on the outer peripheral surface at intervals along one bus line. A composite paper tube manufacturing machine is provided.

Preferably, the coating layer is a coating tape wound around the mandrel in a spiral shape with a space.
Preferably, the width of the coating tape is shorter than the width of the metal web.
Preferably, the coating layer is high molecular polyethylene.

  More preferably, in the winding device, the winding belt comprising two rotating shafts standing upright with the mandrel sandwiched therebetween and an endless belt hung on the two rotating shafts is wound around the mandrel. A wound portion.

Preferably, a first feeding path for supplying the metal web to the mandrel, a first roll disposed at a start end of the first feeding path and winding the metal web, and the paper A second feeding path for superposing the web on the outside of the metal web and supplying it to the mandrel; a second roll disposed at the start end of the second feeding path and on which the paper web is wound; And an adhesive transfer roller disposed on the second feeding path for applying an adhesive to the inside of the paper web.
Preferably, the metal web is aluminum or stainless steel.

  According to the present invention, since the outer peripheral surface of the mandrel is provided with a coating layer in which an exposed region is formed so as to be spaced along one bus line, when the metal web is wound around the mandrel, It is possible to cope with the force, and a thin composite paper tube can be manufactured, and the contact area between the coating layer and the metal web can be narrowed. Therefore, generation | occurrence | production of frictional heat can be suppressed and it can prevent that a metal web and a mandrel weld each other. Furthermore, since the waste paper for preventing the welding of the metal web and the mandrel that has been conventionally used is not required, the cost can be reduced. In addition, since the process of removing discarded paper is not necessary, the work efficiency can be improved.

  Moreover, if a coating tape wound around a mandrel in a spiral shape is used as the coating layer, the coating layer can be easily formed. Further, since the exposed area is also formed in a spiral shape, air flows through the exposed area when the metal web is wound, so that a cooling effect can also be obtained.

Further, by making the width of the coating tape narrower than the width of the metal web, the contact area between the metal web and the coating tape can be reliably narrowed, and the generation of frictional heat can be more reliably suppressed. Therefore, it is possible to reliably prevent the metal web and the mandrel from welding to each other.
In addition, by using high molecular weight polyethylene for the coating layer, frictional heat generated between the metal web and the mandrel can be efficiently suppressed.

  Even if the composite paper tube to be manufactured has a two-layer structure, the inner side is coated with a metal web by applying an adhesive from the second roll to the paper web and applying the adhesive to the outside of the metal web. A composite paper tube having a two-layer structure can be manufactured. If rolls and adhesive transfer rollers are prepared for the number of layers, a composite paper tube having a multilayer structure can also be manufactured.

It is the schematic of the manufacturing machine of the composite paper tube concerning this invention. It is a schematic sectional drawing in the A section of FIG. It is a side view of the mandrel in the manufacturing machine of the composite paper tube concerning this invention.

  As shown in FIG. 1, a composite paper tube manufacturing machine 1 according to the present invention includes a mandrel 2 and a winding belt 3. Further, the manufacturing machine 1 includes a first roll 4 and a second roll 5. The mandrel 2 is made of metal and has, for example, a solid cylindrical shape. The base end of the mandrel 2 is fixed to the support 6. Therefore, the mandrel 2 extends from the support 6 in the horizontal direction, for example. A belt-like metal web 7 is wound around the mandrel 2 in a spiral shape. Specifically, the metal web 7 is supplied along the first feeding path 8 and wound around the mandrel 2 at the end of the first feeding path 8. A first roll 4 is disposed at the starting end of the first feeding path 8, and a metal web 7 is wound around the first roll 4.

  The winding belt 3 is provided near the end of the feeding path 8. The winding belt 3 is an endless belt and is hung on rotating shafts 9 and 10 standing on both sides of the mandrel 2. At that time, the winding belt 3 on one side intersecting with the mandrel 2 is wound around the mandrel 2. This is the winding part 18. As the rotary shafts 9 and 10 rotate in the direction of the arrow R, the winding belt 3 winds while winding the metal web 7 from the outside at the winding portion 18. Thereby, the metal web 7 supplied to the mandrel 2 is given a stronger winding force to the mandrel 2 at the winding part 18. This winding is performed at a portion where the winding belt 3 is wound around the mandrel 2 as the rotary shafts 9 and 10 rotate in the direction of the arrow R. Then, the metal web 7 is fed out toward the tip of the mandrel 2 while being wound around the winding belt 3. A winding device 19 is formed by the winding belt 3, the rotating shafts 9 and 10, and the winding portion 18.

  On the other hand, as shown in FIG. 2, a part of the outer peripheral surface of the mandrel 2 is covered with a coating layer 11. Therefore, the outer peripheral surface of the mandrel 2 that is not covered with the coating layer 11 is exposed. Specifically, as shown in FIG. 3, the coating layer 11 is formed using a coating tape 12. That is, the coating layer 11 is formed by winding the coating tape 12 around the mandrel 2 in a spiral manner. In other words, the coating tape 12 leaves an exposed area 13 arranged on the outer peripheral surface of the mandrel 2 so as to be lined up along the one bus bar. Similar to the coating tape 12, the exposed region 13 is formed in a spiral shape along the longitudinal direction of the mandrel 2. Thereby, when the metal web 7 is wound around the mandrel 2 and sent out, air flows through the exposed region 13, so that a cooling effect can also be obtained. In FIG. 3, for example, the thickness of the coating tape 12 is 0.25 mm, and the width of the exposed region 13 (interval of the coating tape 12) is 1 mm to 2 mm.

  Thus, since the coating layer 11 which formed the exposed region 13 along the longitudinal direction of the mandrel 2 is provided, when the metal web 7 is wound around the mandrel 2, the contact area between the coating layer 11 and the metal web 7 is increased. Can be narrowed. Therefore, generation | occurrence | production of frictional heat can be suppressed and it can prevent that the metal web 7 and the mandrel 2 weld to each other. Furthermore, since the waste paper for preventing the welding of the metal web 7 and the mandrel 2 that has been conventionally used is not required, the cost can be reduced. In addition, since the process of removing discarded paper is not necessary, the work efficiency can be improved. In addition, by using the coating tape 12, the coating layer 11 can be easily formed simply by winding the mandrel 2 in a spiral shape.

  The width of the coating tape 12 is shorter than the width of the metal web 7. Thereby, the contact area of the metal web 7 and the coating tape 12 can be reliably narrowed, and generation | occurrence | production of frictional heat can be suppressed more reliably. Therefore, it is possible to reliably prevent the metal web 7 and the mandrel 2 from welding to each other. As a material used for coating, high molecular polyethylene, Teflon (registered trademark), PEEK (polyether ether ketone), DLC (diamond-like carbon), or the like can be used. Actually, a SUS mandrel having a diameter of 6 mm to 9 mm was used, and an experiment was conducted by winding a high molecular weight polyethylene tape. A metal web was supplied at 10 m / min to produce a composite paper tube for 7 hours, but no welding occurred on the metal web and the mandrel, and there was no wear of the coating tape. Therefore, it can be said that it is particularly preferable to form the coating layer using high molecular weight polyethylene.

  The effect of the composite paper tube manufacturing machine 1 according to the present invention can be used as a composite paper tube manufacturing machine having a multilayer structure as long as the inner layer uses the metal web 2. In the above description, only the metal web forming the inner layer of the composite paper tube is taken as an example. However, when a composite paper tube having a two-layer structure is manufactured, as shown in FIG. 1, a strip-shaped paper web 14 is wound. The taken second roll 5 is prepared. The paper web 14 is wound around the mandrel 2 so as to cover the outer side of the mandrel 2 at the same time as the metal web 7 is wound around the mandrel 2 via the second feeding path 15. An adhesive transfer roller 16 is provided in the middle of the second feeding path 15 in order to bond the metal web 7 and the paper web 14 at the time of winding. As a result, the adhesive is applied to the inside of the paper web 14. The paper web 14 bonded to the metal web 7 and supplied to the mandrel 2 is wound around the mandrel 2 from the outside of the metal web 7 by the winding belt 3, similarly to the metal web 7. Thereby, the composite paper tube 17 having a two-layer structure is manufactured as shown in FIG. If reels and adhesive transfer rollers are prepared for the number of layers, a composite paper tube having a multilayer structure can be manufactured. A composite paper tube with higher heat resistance can be obtained by overlapping the composite paper bonded to the metal web several times.

DESCRIPTION OF SYMBOLS 1 Composite paper tube manufacturing machine 2 Mandrel 3 Clamping belt 4 First roll 5 Second roll 6 Support 7 Metal web 8 First feed path 9 Rotating shaft 10 Rotating shaft 11 Coating layer 12 Coating tape 13 Exposed area 14 Paper web 15 Second feed path 16 Adhesive transfer roller 17 Composite paper tube 18 Winding unit 19 Winding device

Claims (7)

A metal mandrel,
A winding device including a winding belt for spirally winding a thin and strip-shaped metal web and a paper web around the mandrel, and an inner surface forming a composite paper tube made of the metal web;
A coating layer covering the outer peripheral surface of the mandrel,
The composite paper tube manufacturing machine according to claim 1, wherein the coating layer leaves an exposed area lined up along the bus line on the outer peripheral surface at intervals.   2. The composite paper tube manufacturing machine according to claim 1, wherein the coating layer is a coating tape wound in a spiral shape at intervals along the longitudinal direction of the mandrel.   3. The composite paper tube manufacturing machine according to claim 2, wherein the width of the coating tape is shorter than the width of the metal web.   2. The composite paper tube manufacturing machine according to claim 1, wherein the coating layer is made of high molecular polyethylene.   The winding device includes a winding unit in which the winding belt including two rotating shafts standing on both sides of the mandrel and an endless belt hung on the two rotating shafts is wound around the mandrel. The composite paper tube manufacturing machine according to claim 1, wherein: A first payout path for supplying the metal web to the mandrel;
A first roll disposed at a starting end of the first feeding path and wound with the metal web;
A second feeding path for stacking the paper web on the outside of the metal web and feeding the mandrel;
A second roll disposed at a starting end of the second feeding path and on which the paper web is wound;
2. The composite paper tube manufacturing machine according to claim 1, further comprising an adhesive transfer roller disposed in the second feeding path and configured to apply an adhesive to the inside of the paper web.   2. The composite paper tube manufacturing machine according to claim 1, wherein the metal web is made of aluminum or stainless steel.

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