JP5531320B1 - Molding device, rope manufacturing apparatus and rope manufacturing method - Google Patents

Abstract

There are provided a mold applier, a rope manufacturing apparatus, and a rope manufacturing method capable of suppressing an increase in rotational performance even when a rope pitch is lengthened or a strand pitch is shortened.
A plurality of rotating portions 11 that are positioned on the axis of a rope to be manufactured and that rotate around the axis of the rope, and a plurality of strands 30 that are arranged in a staggered manner on a circumferential surface 11a of the rotating portion 11 and that constitute a rope. A molder comprising: a piece 12; and a dimension T between two adjacent pieces 12 is 1/3 or less of a rope pitch.
[Selection] Figure 3

Description

  The present invention relates to a mold applier, a rope manufacturing apparatus, and a rope manufacturing method that mold a strand constituting a rope.

  The rope is composed of a plurality of strands, and the strand is composed of a plurality of strands. A rope is manufactured by twisting a plurality of strands spirally with a rope manufacturing apparatus (see, for example, Patent Document 1).

  When manufacturing a rope, in order to make the rope non-repulsive (property of strands and strands not being cut even when the rope is cut), the strands are molded (the strands are plastically deformed) and then twisted. The rope tries to rotate around the axis in the direction of twisting without applying a load (hereinafter, the property of trying to rotate in the direction of twisting without applying a load is called rotational property).

  On the other hand, since the rope is manufactured by twisting the strands in a spiral shape, the rope has a rotation property (the property that the rope tends to rotate in the direction of untwisting when a load is applied to the rope). Therefore, when an object is suspended by a rope, the suspended object rotates around the axis of the rope due to the rotation property, but it is preferable that the rotation property is small in the quality of the rope.

  In order to reduce the rotation, either increase the rope pitch (strand strand length in the axial direction of the rope) or shorten the strand pitch (strand strand length in the axial direction of the strand). It is known to be good.

Japanese Patent Laid-Open No. 10-140492

  However, when the rope pitch is lengthened or the strand pitch is shortened, there is a problem that the rotational property becomes larger and undulation occurs, making it difficult to wind the drums in alignment.

  This invention is made | formed in view of such a situation, and even if it lengthens a rope pitch or shortens a strand pitch, the type | molding tool, rope production apparatus, and rope which can suppress that a rotational property becomes large An object is to provide a manufacturing method.

  The mold applier according to the present invention is located on the axis of the rope to be manufactured, and rotates around the axis of the rope, and a plurality of staggered arrangements on the circumferential surface of the rotation part to form the rope constituting the rope A sizer between two adjacent pieces is not more than 1/3 of the rope pitch.

  The mold applier according to the present invention includes three or more pieces, and is characterized in that the dimension between the two pieces located at both ends is shorter than the rope pitch.

  In the molder according to the present invention, the piece includes a shaft erected on the circumferential surface, and a rotation roller that is rotatably supported by the shaft and engages with the strand. Thus, the relative positions of the rotating rollers of the two adjacent pieces are different.

  The rope manufacturing apparatus according to the present invention includes the above-described mold applicator that molds a plurality of strands, and a twister that aggregates and twists the plurality of strands that are molded by the mold applier.

  The rope manufacturing method according to the present invention is characterized in that a plurality of strands are molded by the above-described mold applier, and the plurality of typed strands are concentrated in a twister and twisted.

  In the present invention, the dimension between two adjacent pieces is set to 1/3 or less of the rope pitch, and tension is applied to the strands between the mold applier and the twister. The strand mold (plastically deformed strand) applied by the molder is stretched by tension. As it passes through the twister, the stretched strands shrink again and the strand mold (plastically deformed strands) is restored. The plurality of strand molds are twisted while shrinking, and the strands are pressed against each other. The rope rotates in the direction that allows untwisting (the direction opposite to the direction of twisting).

  In the present invention, the tension is reliably applied to the strand by making the dimension between the two pieces located at both ends shorter than the rope pitch.

  In the present invention, since the relative positions of the rotating rollers of two adjacent pieces are different in the axial direction of the shaft, the strand bends in a step shape between the adjacent rotating rollers, and between the rotating portion and the twister. Even greater tensions act on the strands.

  In the mold applier, the rope manufacturing apparatus, and the rope manufacturing method according to the present invention, the dimension between two adjacent pieces is set to 1/3 or less of the rope pitch, and the strand is formed between the mold applier and the twister. Apply tension. The mold (plastically deformed strand) attached to the strand extends due to the tension. As it passes through the twister, the stretched strands shrink again and the strand mold (plastically deformed strands) is restored. The molds of the plurality of strands are twisted while shrinking, the gaps between the strands disappear, and the strands are pressed against each other. The rope rotates in the direction in which the strands can be unwound (the direction opposite to the direction in which the strands are put) in order to eliminate the force with which the strands press. For this reason, the rotational property can be suppressed.

It is a top view which shows schematically the rope manufacturing apparatus which concerns on embodiment. It is a partial expanded side view which shows a piece schematically. It is a partial enlarged plan view which shows a piece schematically. It is explanatory drawing explaining a rope pitch.

  Hereinafter, the present invention will be described with reference to the drawings showing a rope manufacturing apparatus 1 according to an embodiment. FIG. 1 is a plan view schematically showing the rope manufacturing apparatus 1.

  The rope manufacturing apparatus 1 includes a core rope 31 and a plurality of strands 30, 30, ..., 30 from a plurality of bobbins (not shown) around which the strands 30 are wound and a bobbin (not shown) around which the ropes 31 are wound. A rotating cage 2 is provided. The rotating cage 2 has a cylindrical shape and rotates around its axis. Each strand 30 is juxtaposed in the circumferential direction so as to be parallel to the axial direction of the rotating cage 2 outside the outer peripheral surface of the rotating cage 2. The strand 30 is arranged to be movable in the axial direction of the rotating cage 2. The heart rope 31 is disposed on the axis of the rotating cage 2. The strand 30 rotates around the axis of the rotating cage 2 by the rotation of the rotating cage 2.

  The strand 30 moves in the axial direction of the rotating cage 2 (right side in FIG. 1) while rotating around the axis of the rotating cage 2, and the cord 31 moves in the same direction as the strand 30.

  Next to the rotating cage 2, a guide disk 3 for guiding the strand 30 and the core rope 31 is provided. The guide disk 3 is arranged coaxially with the rotating cage 2. A support bar 4 that supports a molder 10 to be described later projects from the peripheral edge of the side surface of the guide disk 3 to the opposite side of the rotary cage 2.

  The diameter of the guide disk 3 is smaller than the diameter of the rotating cage 2. The guide disk 3 is provided with a plurality of through holes (not shown) through which the strands 30 and the core rope 31 are inserted. One through-hole is provided in the central portion of the guide disk 3, and a plurality of through-holes are arranged in the circumferential direction on the peripheral edge of the guide disk 3. The core rope 31 supplied from the rotating cage 2 is inserted through the one through hole so as to be positioned on the axis of the guide disk 3. Each of the plurality of strands 30 supplied from the rotating cage 2 is inserted into the through hole provided in parallel to the peripheral edge portion of the guide disk 3 so as to be gathered toward the core rope 31. The guide disk 3 rotates around the axis in synchronization with the rotation of the rotating cage 2.

  A molder 10 is supported on the support bar 4 via an attachment portion 5. The molder 10 includes a rotation portion 11 that rotates in synchronization with the rotating cage 2 and the guide disk 3. The rotating part 11 has a cylindrical shape, and one end thereof is formed in a truncated truncated cone shape. A circumferential surface of a portion formed in a truncated truncated cone shape in the rotation portion 11 (hereinafter, a circumferential surface of a portion formed in the truncated truncated cone shape in the rotation portion 11 is referred to as a truncated cone-shaped circumferential surface 11a). A plurality of pieces 12, 12,..., 12 for forming the strands 30, 30,.

  The rotation part 11 is arranged on the axis of the rotating cage 2 and the guide disk 3 so that the piece 12 is located on the opposite side of the guide disk 3. The rotating portion 11 rotates around the axis of the rotating cage 2 and the guide disk 3 (the axis of the rope 32 to be manufactured). A heart rope 31 penetrating the guide disk 3 is inserted through the center of the rotating part 11 in the radial direction. A strand 30 penetrating the guide disk 3 is disposed between the plurality of pieces 12.

  The heart rope 31 moves in the axial direction (right side in FIG. 1) and passes through the central portion of the rotation portion 11. The strand 30 moves between the pieces 12 while being moved in the axial direction (right side in FIG. 1), and is molded.

  On the piece 12 side of the mold applier 10, a twisting die 20 (twister) for twisting the strand 30 is fixed next to the mold applier 10. The twist opening die 20 has a block shape, and the twist opening die 20 is formed with a through hole (not shown) disposed coaxially with the rotation portion 11. A core rope 31 penetrating the rotation part 11 and a plurality of strands 30 molded by the piece 12 are inserted into the through hole of the twisted die 20, and the strands 30 are spirally wound around the peripheral surface of the core rope 31. , Twisted together. The twisted cord 31 and the strand 30 become a rope 32 and are wound around a drum (not shown).

  FIG. 2 is a partially enlarged side view schematically showing the piece 12, and FIG. 3 is a partially enlarged plan view schematically showing the piece 12. A plurality of sets are arranged side by side in the circumferential direction on the truncated cone-shaped peripheral surface 11a (circumferential surface) of the rotating portion 11 with the three pieces 12, 12, 12 as a set. The three pieces 12, 12, 12 of each set are staggered along the axial direction.

  The piece 12 has a base 12a arranged on the frustoconical circumferential surface 11a, projects outward from the base 12a in the radial direction of the rotating portion 11, and a support shaft 12b that supports the rotating roller 12d; An end block 12c disposed on the protruding end of the shaft 12b and a rotating roller 12d rotatably supported by the support shaft 12b are provided. A locking groove 12e for locking the strand 30 is provided on the peripheral surface of the rotating roller 12d.

  As shown in FIG. 2, in the three pieces 12, 12, 12, the rotation rollers 12d, 12d of the two adjacent pieces 12, 12 have different relative positions in the axial direction of the support shaft 12b. Specifically, the rotating roller 12d located on the guide disk 3 side (left side in FIG. 2) is closer to the frustoconical circumferential surface 11a than the rotating roller located on the twisting die 20 side (right side in FIG. 2). The distance is large (located on the upper side in FIG. 2). As shown in FIG. 3, the distance T between two adjacent pieces 12, 12 in the axial direction of the rotating portion 11 is substantially the same between any of the pieces 12, 12.

  Next, the relationship between the distance T and the rope pitch K will be described. FIG. 4 is an explanatory diagram for explaining the rope pitch. In addition, the broken line in FIG. 4 has shown the one strand 30 which went around to the back side. The distance T is set to be 1/3 or less of the rope pitch K. The rope pitch K indicates the axial distance when one strand 30 is wound around the cord 31 once. For example, as shown in FIG. 4, when six strands 30 are wound around the core 31, a distance corresponding to approximately six widths (diameters) of the strands 30 corresponds to the rope pitch K.

  Since the three pieces 12, 12, 12 are arranged side by side, the distance between the pieces 12, 12 located at both ends is 2/3 or less of the rope pitch and shorter than the rope pitch K.

  The strand 30 is disposed between the pieces 12, 12, 12, is locked in the locking groove 12 e of the rotating roller 12 d, moves to the twisting die 20 side so as to meander, and is molded. By the molding, the strand 30 is plastically deformed, curved, and repelled.

  When the distance T between the adjacent pieces 12 and 12 is set to be 1/3 or less of the rope pitch K, a large tension acts on the strand 30 between the rotating portion 11 and the twisting die 20.

  Moreover, the relative positions of the rotary rollers 12d and 12d of the two adjacent pieces 12 and 12 are different in the axial direction of the support shaft 12b. In other words, when the surface on which the piece 12 is disposed (for example, the truncated cone-shaped peripheral surface 11a) or the surface parallel to the surface on which the piece 12 is disposed is used as the reference surface, the reference surface and the rotating roller 12d, The distance between each of 12d is different. Therefore, as shown in FIG. 2, the strand 30 bends in a stepped manner between the adjacent rotating rollers 12 d and 12 d, and a larger tension acts on the strand 30 between the rotating portion 11 and the twisting die 20. To do.

  The strand 30 curved by plastic deformation is stretched by the above-described tension, and is inserted into the through hole of the twisting die 20 in the stretched state, and is wound around the circumferential surface of the core 31. At this time, the strand 30 is stretched, but a restoring force is applied to the strand 30 to return to the plastically deformed state (curved state).

  The strand 30 is wound around the cord 31 while passing through the twisting die 20, and becomes a rope 32 together with the cord 31. When passing through the twisting die 20, the strand 30 tries to shorten by the restoring force. However, since there is almost no gap between the strands 30 wound around the core 31, the strands 30 are pressed against each other. In order to eliminate the force generated by the pressing, the rope 32 rotates in the direction of untwisting. That is, when the rope pitch is lengthened or the strand pitch is shortened, the rope 32 rotates in the direction of twisting, but the rope 32 also rotates in the direction of untwisting as described above. Sex can be suppressed.

  Generally, the pieces 12 are juxtaposed on the frustoconical circumferential surface 11a so that the distance between the pieces 12 and 12 located at both ends is substantially the same as the rope pitch K. For example, when three pieces 12, 12, and 12 are arranged in a staggered manner on the frustoconical circumferential surface 11a, the distance T is 1/2 of the rope pitch K and longer than 1/3 of the rope pitch K. . At this time, sufficient tension is not generated in the strand 30 between the rotation portion 11 and the twisting die 20, and the strand 30 hardly expands. That is, the strand 30 maintains the state of being molded, and when the rope pitch is lengthened or the strand pitch is shortened, the rope 32 becomes more rotatable.

  In the mold applier 10, the rope manufacturing apparatus 1, and the rope manufacturing method according to the embodiment, since the typed strand 30 is stretched and twisted to the cord 31, the rope pitch is increased or the strand pitch is increased. Even if it shortens, it can suppress that the rotational property of the rope 32 becomes large.

  Further, by arranging three or more pieces 12, 12,..., 12 side by side and making the dimension between the two pieces 12, 12 located at both ends shorter than the rope pitch, adjacent pieces 12, 12 are provided. The distance T between them is surely made smaller than 1/3 of the rope pitch K, and the tension is surely applied to the strand 30 between the rotation part 11 and the twisting die 20.

  Moreover, the relative positions of the rotary rollers 12d and 12d of the two adjacent pieces 12 and 12 are different in the axial direction of the support shaft 12b. Therefore, the strand 30 bends in a step shape between the adjacent rotating rollers 12 d and 12 d, and an even greater tension acts on the strand 30 between the rotation portion 11 and the twisting die 20.

  If the distance T between adjacent pieces 12 and 12 is shortened, the rope 32 rotates more in the direction of untwisting. For example, when the distance T is set to about 15% of the rope pitch K, the rope 32 rotates more in the direction of untwisting than when the distance T is set to about 30% of the rope pitch K.

  The number of pieces 12 in one set is not limited to three. If the distance T between the adjacent pieces 12 and 12 is 1/3 or less of the rope pitch K, the number of the set of pieces 12 may be four or more. Even in this case, the distance T can be more reliably reduced to 1/3 or less of the rope pitch K by setting the distance between the pieces 12 and 12 located at both ends to be shorter than the rope pitch.

  The relative positional relationship between the two adjacent rotating rollers 12d and 12d in the axial direction of the support shaft 12b is not limited to the above-described configuration. For example, the rotating roller located on the twist die 20 side (right side in FIG. 2) has a larger distance from the frustoconical circumferential surface 11a than the rotating roller 12d located on the guide disk 3 side (left side in FIG. 2). A configuration (located on the upper side in FIG. 2) may be used. Further, only the rotating roller 12d located at the center in the left-right direction in FIG. 2 is moved closer to or away from the frustoconical circumferential surface 11a, so that the rotating roller 12d positioned on the left side or the right side is more than the rotating roller 12d positioned at the center. It may be positioned relatively above or below.

  Further, in the axial direction of the support shaft 12b, only one pair or a plurality of pairs of adjacent two rotary rollers 12d and 12d may have different relative positions. For example, in FIG. 2, the relative position of either the left or right rotating roller 12d and the rotating roller 12d located in the center is different, and the relative position between the other rotating roller 12d on the left or right and the rotating roller 12d positioned in the center is different. The position may be the same. Further, when there are four or more pieces 12, the relative positions of the arbitrary pairs of adjacent rotating rollers 12d and 12d may be different. Further, a concave portion or a convex portion may be formed at a predetermined location on the frustoconical peripheral surface 11a, and a piece 12 may be provided in the concave portion or the convex portion so that the relative positions of the adjacent rotary rollers 12d and 12d are different.

  The relative positions of all the rotating rollers 12d in the axial direction of the support shaft 12b may be substantially the same. Even in this case, as long as the distance T between the adjacent pieces 12 and 12 is smaller than 1/3 of the rope pitch K, the strand 30 is formed between the rotating portion 11 and the twisting die 20. Sufficient tension is applied.

  It should be thought that embodiment disclosed this time is an illustration and restrictive at no points. The technical features described in each embodiment can be combined with each other, and the scope of the present invention is intended to include all modifications within the scope of claims and the scope equivalent to the scope of claims. Is done.

DESCRIPTION OF SYMBOLS 1 Rope manufacturing apparatus 10 Typing machine 11 Autorotation part 11a Frustum-shaped peripheral surface 12 Pieces 12a Base 12b Spindle 12c End block 12d Rotating roller 12e Locking groove 20 Twist opening die (twister)
30 Strand 31 Heart rope 32 Rope

Claims (5)

In a mold applier comprising a rotation part that is positioned on the axis of a rope to be manufactured and rotates around the axis of the rope, and a plurality of pieces that are arranged in a staggered manner on the circumferential surface of the rotation part and mold strands constituting the rope ,
The mold tool characterized in that the dimension between two adjacent pieces is 1/3 or less of the rope pitch. With three or more pieces,
The mold tool according to claim 1, wherein a dimension between the two pieces located at both ends is shorter than a rope pitch. The piece is
A shaft erected on the circumferential surface;
A rotating roller that is rotatably supported by the shaft and that the strand locks;
The molder according to claim 1 or 2, wherein the relative positions of the rotating rollers of two adjacent pieces differ in the axial direction of the shaft. The molder according to any one of claims 1 to 3, which molds a plurality of strands;
A rope manufacturing apparatus comprising: a twister that aggregates and twists a plurality of strands that are molded by the molder. A plurality of strands are molded by the molder according to any one of claims 1 to 3,
A rope manufacturing method characterized in that a plurality of typed strands are concentrated in a twister and twisted.

Images