JP2011256482A - Soft rope of twisted resin film and method for producing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a soft rope which expands to the diameter of a supply port or more because a twisted yarn lightly expands after it comes out from a supply port of a twisting machine, and which is not eased even in the case where it is thick and loosely twisted, and to provide a method for producing the soft rope.SOLUTION: A soft rope is obtained by twisting a plurality of twisted yarns that are obtained by loosely twisting plastic flat yarns, in which a joint part between the twisted yarns is subjected to bonding to keep the joint. Also, a twisting machine has a rope forming part in front of a twisted yarn feeding device, the feeding device is provided with gear type rotating discs having supply ports for delivering a plurality of twisted yarns, and the forming part has an assembling part for gathering the twisted yarns in order to twist them while drawing. The twisting machine is operated by feeding and rotating each rotating disc while forcibly delivering the twisted yarns onward before the yarns are drawn by the forming part so that the twisted yarns get looseness without tension between the supply ports and the assembling part.

Description

  The present invention relates to a resin film twisted soft rope obtained by bundling several twisted yarns (referred to as twisted yarns) applied with a stretched resin film, and a method for producing the soft rope.

  Resin film twisted ropes are classified into hard ropes mainly used for packing and the like, which are strongly twisted, and soft ropes used as hand straps and cushioning materials. For this production, conventionally, a PP pellet is used as a material, a film is formed by an extruder, and then a film (flat yarn) formed by stretching it is twisted, and about 3 twist yarns are combined and twisted. A high-speed twister (Nanpak) was used.

  A conventional twisting machine used for manufacturing this type of rope is provided with a supply unit in which a plurality of rotating disks for sending twist yarns one by one at a supply port are arranged, following the production unit of a plurality of twist yarns. The structure was provided with a forming drum in which twist yarns were gathered in front and twisted.

  However, according to the conventional manufacturing method using a twisting machine, since it was designed to manufacture a hard rope that twists hard, there is a limit to the thickness of the soft rope, and the thickness is the ability of 3 mm to 10 mm. In conventional general manufacturing, only ropes that have a limited range of use can be provided for handbags and general packing.

  Looking at the cause of the limitation in the thickness of the soft rope, one is that the diameter of the feed port of the rotating disk in the twisting machine is the size matched to the hard rope, but in the past, it was a twisted yarn in a sweet twisted state. One factor was that it was necessary to pass through the supply port. That is, in the conventional twisting machine, twisting is applied in a tension state in which the twist yarn is pulled toward the forming drum, so that it cannot be expected to be so thick after coming out from the supply port. Moreover, since the soft rope obtained by sweet twisting can be easily unwound, there has been a reality that it cannot be used as a rope material that requires strength and stability.

  In view of the above situation, the present invention is a soft yarn that swells beyond the diameter of the supply port so that the twist yarn swells sweetly after coming out of the supply port of the twisting machine, and even if it is a thick sweet twist, An object was to provide a rope and a method for manufacturing the same.

  In order to solve the above-described problems, the present invention is a soft rope formed by twisting a plurality of twist yarns obtained by sweet twisting a plastic flat yarn, and the bonding for holding the joint between the twist yarns is performed. A resin film twisted soft rope (Claim 1) is provided.

  Further, the present invention is provided with a rope forming portion in front of the twist yarn supply device, the supply device is provided with a gear-type rotating disk having a supply port for feeding out a plurality of twist yarns, In a twisting machine that has a gathering unit that gathers twist yarns for twisting while pulling, the twisted yarn is tensioned between the supply port and the gathering unit while forcing the twisted yarn ahead of pulling by the forming unit. 2. The method for producing a soft rope for twisting a resin film according to claim 1, wherein the twisting machine is operated by feeding and rotating each turntable so as to cause a slack with no slack.

  In the above configuration, when a twisted yarn having a large diameter that can be passed through it is passed through the supply port of the twisting machine, the twisted yarn swells further to a larger diameter due to looseness between the supply port and the gathering portion, and the state Therefore, a thick rope can be formed. Moreover, even if it is a sweet twist, the binding of twist yarns is hold | maintained by adhesion | attachment.

  As described above, the present invention has succeeded in providing a soft rope that is sweet twisted and has unstabilized stability, and according to the soft rope, it can be cut anywhere. In addition, it has an excellent effect that it is easy to carry, is lightweight and convenient to carry, can be used not only for packing but also as a cushioning material, and can be easily manufactured.

  Further, according to the third aspect, it is possible to rationally form the bonded portion simultaneously with the production of the soft rope, and according to the fourth aspect, the soft rope is further softened.

It is a side view of the soft rope concerning this invention. It is an expanded sectional view of the AA line arrow of FIG. It is a perspective view which shows the principal part of the twist machine which manufactures the soft rope of this invention. It is the expansion perspective view of the part which looked at the same twister in the arrow X direction of FIG. It is the expansion perspective view of the part similarly seen to the arrow Y direction. It is a partially expanded side view of the same twisting machine which shows the use condition of an air gun by notching a part of twist yarn.

  The soft rope S is a twisted yarn 1 as a material by twisting a stretched flat yarn of a plastic film. When the bonding 3 is based on thermal welding, a heat welding film is used. However, for example, polyethylene, polypropylene, polyester, nylon or the like is used. Moreover, in order to improve a soft feeling and a buffer property, these are embossed-like processed. For this purpose, there is a method in which a die for extruding the film is provided with irregularities or grooves.

  Moreover, about the twisting machine used for the method of this invention, in Example 2, the twister of the existing steelmaking machine was remodeled and used for the convenience of expediting experiment. However, since the structure becomes complicated by taking the bypass path 16 in the existing one, a more rational structure newly designed is desirable. In addition, about the shaping | molding of the film which makes the twist yarn 1, if the emboss-like process with an uneven | corrugated strip is given to it by forming a groove | channel in the shaping | molding port of the die | dye and extruding it to an uneven | corrugated film, it will be much more sweet twisted. Become.

  FIG. 1 is a side view showing a soft rope S of the present invention, and FIG. 2 is an enlarged cross-sectional view taken along line AA. Regarding the structure, the three twist yarns 1, 1, 1 were lightly twisted and joined together, and the joint was held by the adhesive 3 (represented by a thick line in FIG. 2), and the diameter D was formed to 14 mm.

  And per unit was manufactured as 100m / winding in diameter D14mm of soft rope S. Its weight was 4 kg. When this is compared with the hard rope by the twister of the conventional steelmaking machine, the weight is 8.5 kg if it is also 14 mm in diameter and 100 m / winding. It turns out that it is a sweet twist. Therefore, when the cost was compared with that of the conventional hard rope, it was 2,400 yen / wind with respect to 7,000 yen / wind, which was also halved or less.

  The sweet-twisted soft rope S is twisted to the extent that it can be said to be drastic, but since the twisted yarns 1, 1, 1 are bonded 3 at the place of twisting, they can be used safely and conveniently without unraveling. As for its use, industrial materials and fishery materials are listed, and it exhibits excellent power for buffering heavy objects. For example, stability has been obtained in tying that is used for pipe wrapping to avoid contact between pipes.

  In this case, an adhesive is used for the bonding 3, but other means such as a heat welding means can be used as in the following embodiment.

  3 to 6 are for explaining a method of manufacturing the resin film twisted soft rope S, and will be described in a twisting machine (twisting machine obtained by modifying an existing product for steelmaking).

  The twisting machine is mounted on the base 4 of the steelmaking machine, and at the rear part illustrating the main part (FIG. 1), there is a supply device 6 for twist yarns 1, 1, 1 and its front end. In the wall disk-shaped frame 5 standing from the base 4, four rotating disks 7, 7, 7, 7 each having a supply port are arranged, of which three rotating disks 7, 7, 7, twist yarns 1, 1, 1 are drawn (FIG. 3).

  A rope forming portion 9 is provided at the front end portion of the base 4, and an air gun 11 is provided between the upright frame 5 and the forming portion 9 for making an adhesive 3 (see FIG. 2) by heat welding.

  Gears are used for the turntables 7, 7, 7, 7 in the supply device 6, and they are rotated at the same speed by the circulation chain 13 sequentially applied thereto, so that the supply speeds of the twist yarns 1, 1, 1 are unified. In the present invention, the bypass path 16 for rotating the circulation chain 13 is added by remodeling so as to accelerate the rotation and force the supply.

  A motor (15 is a transformer) placed in the molding unit 9 is used for the power of the supply device 6. That is, the driven gear 21 at the upper end of the frame 5 is provided with respect to the drive gear 19 of the drive shaft 17 by the motor (FIG. 3), and the supply cylinders 25 and 26 at the upper end are rotated on the shaft 23 of the driven gear 21. Of the chains 25a and 26a that are respectively engaged with both gears, the sub-chain 29 that is engaged with one of the supply cylinders 26 rotates the lower lower shaft 31 (FIG. 5). A bypass path 16 is provided to drive the chain 13.

  The bypass path 16 has an additional shaft 33 installed between the frame 5 and the adjacent frame 5a. An input chain 35 is interposed between the lower shaft 31 and a forward drive gear at the end of the additional shaft 33. 37 is attached, and the auxiliary gear 41 is integrally provided on the back side of the driven gear 39 engaged therewith, and the circulation chain 13 is engaged with it, so as long as the bypass path 16 is used (can be switched for use). The twist yarns 1, 1, and 1 are forcibly fast-forwarded from the rotating disks 7, 7, and 7, so that the twist yarns 1, 1, and 1 are doubled (see the two-dot chain line in FIG. 6). The rope S is formed in a sweet twist. Reference numeral 14 denotes a spring wheel having a gear on which the circulation chain 13 is hung on the back side.

  The forming part 9 has a rotating drum that winds the rope S while twisting it in the cover 49, and is provided with a gathering part 41 of twist yarns 1, 1, 1 in front of it. The air gun 11 blows high-temperature air toward the collecting portion 41. The air gun 11 is supported by a main guide rail 45 and a sub guide rail 47 so as to be movable back and forth, and is moved and moved by a handle (not shown). The air gun 11 is turned on and off by a switch operation.

  FIG. 6 shows a state in which the air gun 11 has approached the gathering portion 41, and hot air is blown to the twist yarns 1, 1, 1 gathered in this state. In this way, when twisting ahead of the gathering portion 41, the three twist yarns 1, 1, 1 are joined together in one piece.

S Soft rope 1 Twist yarn 3 Bonding 6 Supply device 7 Turntable 9 Molding part 11 Air gun 41 Collecting part

Claims (4)

  A soft rope made by twisting a plurality of twist yarns made by sweet twisting of a plastic flat yarn, and a twisted soft resin film characterized in that the joints between the twist yarns are bonded to hold the joint rope.   A rope forming part is provided in front of the twist yarn supply device, a gear-type rotating disk having a supply port for feeding out a plurality of twist yarns is provided in the supply device, and the forming part is twisted while being pulled. In a twisting machine having a gathering section for gathering twisted yarns, the twisted yarn is forcibly loosened between the supply port and the gathering section while forcing the twisted yarn forward before pulling by the forming section. The method of manufacturing a soft rope for twisting a resin film according to claim 1, wherein each rotating disk is fed and rotated to operate a twisting machine.   An air gun is installed between the twist yarn supply device and the forming part of the molding part so that it can be moved back and forth, and high-temperature air from the air gun is blown onto the collecting part at the forward position of the air gun, and the twist yarns are bonded to each other by heat welding. The method for producing a soft rope for twisting a resin film according to claim 2, wherein the method is applied together with twisting molding. The method for producing a twisted soft rope for a resin film according to claim 2 or 4, wherein a groove for forming the film into irregularities is formed at a die extrusion port in forming a film to be a twist yarn.

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