JP2018044258A - Grommet processing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a novel grommet processing apparatus capable of reducing production cost of an endless sling.SOLUTION: The grommet processing apparatus 1 includes: a base 2 for placing a drum D winded with a wire rope W; rotating device 3 for rotating the drum D by rotating the base 2; a guiding device 4 for guiding the wire rope W run out from the drum D to a round orbit passing on a rotation axis L of the base 2; and a twisting device 5 for twisting the wire rope W by passing the wire rope W before guided to the round orbit through a meandering path S. The wire rope W is processed to an endless sling 10 using the grommet processing apparatus 1.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a grommet processing apparatus for processing a wire rope into an endless sling.

  In general, an annular sling used for a load lifting operation or the like is referred to as an “endless sling”. Conventionally, when processing this endless sling, rope processing called “grommet” has been performed.

  In this grommet, one endless sling is obtained by breaking a plurality of strands constituting the wire rope and twisting one of the strands. When the number of endless slings processed by the grommets is less than the number of strands constituting the wire rope as the material, the unused strands are discarded. Therefore, in the endless sling processing using grommets, the material unit cost is increased by the number of unnecessary strands.

  In addition, endless sling processing using grommets requires many labors and long working hours because many processes are performed manually. As a result, endless slings processed by grommets are expensive.

  In this regard, Patent Documents 1 and 2 listed below disclose technical means for forming an endless sling with a single wire rope. Patent Document 3 below discloses an apparatus (endless wire rope processing machine) for mechanically processing an endless sling (endless wire rope).

JP 2007-63677 A JP 2010-185150 A Japanese Utility Model Publication No. 7-12498

  If the endless sling is formed from a single wire rope as in the means disclosed in Patent Documents 1 and 2, the material is not wasted. Moreover, the operation | work which separates a strand from a rope becomes unnecessary.

  However, in the means disclosed in Patent Documents 1 and 2, it is still necessary to manually perform the step of twisting the rope. In particular, as the diameter of the rope as a material increases and the endless sling to be processed increases in diameter, the labor load of the process of twisting the rope increases.

  On the other hand, if the endless sling is processed using the processing machine described in Patent Document 3, the working efficiency is improved.

  However, the processing machine described in Patent Document 3 guides the wire rope fed out from the drum to the orbit while following the guide, and rotates a part of the wire rope guided to the orbit around the drum. However, since the rope is twisted, the wire rope is expected to be worn or twisted during the manufacturing process.

  This invention is developed in view of the said technical subject, and it aims at providing the novel grommet processing apparatus which can reduce the manufacturing cost of an endless sling.

  The grommet processing device of the present invention for solving the technical problem is a grommet processing device for processing a wire rope into an endless sling, wherein a base on which a drum around which the wire rope is wound is installed, and the base A rotating device that circularly moves the drum by rotating a table; a guide device that guides a wire rope fed from the drum to a circular orbit passing on the rotation axis of the base; and And a twisting device for twisting the wire rope by passing the wire rope through a meandering path (hereinafter referred to as “the device of the present invention”).

  In the device according to the present invention, it is preferable that the meandering path of the twisting device is formed by a plurality of pulleys.

  According to the present invention, the manufacturing cost of the endless sling can be reduced.

FIG. 1 is a side view (a) and a top view (b) showing an outline of the apparatus of the present invention. FIG. 2 is a front view showing the twisting device. FIG. 3 is a side view showing a process of processing an end wrestling using the apparatus of the present invention. FIG. 4 is a side view showing a process of processing an end wrestling using the apparatus of the present invention. FIG. 5 is a side view showing a process of processing an end wrestling using the apparatus of the present invention. FIG. 6 is a side view showing a process of processing an end wrestling using the apparatus of the present invention. Fig.7 (a) is a front view which shows an end wrestling precursor, FIG.7 (b) is a front view which shows an end wrestling.

  Hereinafter, although the form (embodiment) for carrying out the present invention is explained based on a drawing, the present invention is not limited to this embodiment.

<Invention Device 1>
FIG. 1 shows a device 1 of the present invention according to an embodiment. The device 1 of the present invention includes a base 2, a rotating device 3, a guide device 4, and a twisting device 5.

-Base 2-
A drum D around which a wire rope W is wound is installed on the base 2. In this embodiment, the base 2 has a structure supported by a base 21, and a roller 22 is interposed at a contact point between the base 2 and the base 21. That is, the base 2 is a turntable having a turntable mechanism. The base 2 is provided with a through hole 23 so as to cut out a part of the base 2 including the rotation axis L. Further, the base 2 is provided with a drum holder 24 at a position facing the through hole 23. The drum holder 24 is provided with a bearing 25 that rotatably supports the drum D.

-Rotating device 3-
The rotating device 3 plays a role of causing the drum D to move circularly by rotating the base 2. In the present embodiment, the rotating device 3 includes a roller chain 31 disposed along the periphery of the base 2, a sprocket 32 engaged with the roller chain, a motor (not shown) that rotates the sprocket 32, It comprises. That is, the rotating device 3 is configured to transmit the rotation of the sprocket 32 to the roller chain 31 by driving the motor and rotating the sprocket 32, thereby rotating the base 2. Yes. By the rotation of the base 2, a circular motion about the rotation axis L is given to the drum D.

-Guide device 4-
The guide device 4 plays a role of guiding the wire rope W fed out from the drum D to a circular orbit passing on the rotation axis L of the base 2. In the present embodiment, the guide device 4 includes an arm 41, a plurality of guide rollers 43, and a feed mechanism 44.

  The arm 41 includes a support column 411 erected at a position distant from the base 2 and a bracket 412 that is connected to the tip of the support column 411 so that the tip reaches the upper space of the base 2. And.

  The guide roller 43 is disposed in the lower space of the arm 41 and the base 2 (hereinafter, for convenience of explanation, the guide roller 43 disposed at the tip of the arm 41 is referred to as “upper guide roller (43A). The guide roller 43 disposed in the lower space of the base 2 is referred to as a “lower guide roller (43B)”.

  The feed mechanism 44 is a pinch roller disposed in the middle of the column 411 of the arm 41 and is rotated by a motor (not shown).

  That is, in the present embodiment, the guide device 4 hangs the wire rope W fed from the drum D around the plurality of guide rollers 43 from the upper guide roller 43A to the lower guide roller 43B, and the feed mechanism 44 is moved. By sequentially sending out while sandwiched between the pinch rollers that constitute, it is guided to the orbit. At this time, the circular orbit drawn by the wire rope W passes on the rotation axis L of the base 2 depending on the positional relationship between the upper guide roller 43A and the lower guide roller 43B.

-Twisting device 5-
As shown in FIG. 2, the twisting device 5 plays a role of imparting twist to the wire rope W by passing the wire rope W before being guided to the orbiting track through the meandering path S. In the present embodiment, the twisting device 5 forms the meandering path S by a plurality of pulleys 52 (52 </ b> A to 52 </ b> C) attached to the surface of the board 51 erected near the rotation axis L of the base 2. Of the pulleys 52, a pulley 52A attached to the upper portion of the board 51 and a pulley 52C attached to the lower portion are vertically moved along vertical grooves 53 (53A, 53C) provided in the board 51. The attachment position can be selected. Further, the pulley 52B attached in the middle of the board 51 can be selected in the left-right direction along the lateral groove 54 provided in the board 51. That is, the twisting device 5 is configured such that the pitch and the swing width of the meandering path S can be selected by changing the mounting position of the pulley 52 (52A to 52C).

<Processing of Endless Sling 10 by Device 1 of the Present Invention>
3 to 7 show processing steps of the endless sling 10 by the device 1 of the present invention. When the endless sling 10 is processed by the apparatus 1 of the present invention, first, the drum D around which the wire rope W is wound is installed on the base 2, and the wire rope W is fed out from the upper guide roller 43 </ b> A. It is wound around a plurality of guide rollers 43 reaching the lower guide roller 43B and is sandwiched between pinch rollers constituting the feed mechanism 44 (see FIG. 3).

  Next, the tip of the wire rope W that has returned through the through hole 23 provided in the base 2 is temporarily fixed to the wire rope W that is delayed in rotation using an iron wire F or the like (see FIG. 4). Further, the wire rope W before being guided to the orbit is passed through the meandering path S of the twisting device 5 (see FIG. 2).

  In this state, if the rotating device 3 and the feed mechanism 44 of the guide device 4 are driven, a circular motion about the rotation axis L of the base 2 is imparted to the drum D, and the drum D is imparted to the drum D. The wound wire rope W is fed out and sequentially guided to the orbit (see FIGS. 5 and 6). At this time, since the wire rope W before being guided to the circular track passes through the meandering path S of the twisting device 5, a helical twist is sequentially applied to the wire rope W. Then, the wire rope W to which the twist is given by passing through the meandering path S is wound around the preceding wire rope W that already goes around the orbit when it is guided to the orbit.

  Then, after the winding of the wire rope W is started, the endless sling precursor 10 </ b> A shown in FIG. 7A is formed by rotating the circular orbit a predetermined number of times (here, six times after temporary fixing). Finally, when the endless sling precursor 10A is removed from the guide device 4 and centered, the endless sling 10 shown in FIG. 7B is obtained.

  That is, the processing of the endless sling 10 by the device 1 of the present invention uses a single wire rope W as a raw material, so that no material is wasted. Moreover, the labor load of the operator when processing the endless sling 10 is also small. Therefore, the manufacturing cost of the endless sling can be reduced.

  The present invention can be implemented in various other forms without departing from the spirit or main features thereof. Therefore, the above-mentioned embodiment is only a mere illustration in all points, and should not be interpreted limitedly. The scope of the present invention is indicated by the claims, and is not restricted by the text of the specification. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

  The present invention is suitably used as an apparatus for processing an endless sling.

1 Device of the present invention (Grommet processing device)
2 Base 3 Rotating device 4 Guide device 43 Guide roller 44 Feed mechanism 5 Twisting device 10 Endless sling 10A Endless sling precursor D Drum L Rotating shaft S Meandering path W Wire rope

Claims (2)

A grommet processing device for processing a wire rope into an endless sling,
A base on which a drum around which a wire rope is wound is installed;
A rotating device for circularly moving the drum by rotating the base;
A guide device for guiding the wire rope fed out from the drum to a circular orbit passing through the rotation axis of the base;
A twisting device that applies twist to the wire rope by passing the wire rope before being guided to the orbital track through a meandering path;
The grommet processing apparatus characterized by comprising. In the grommet processing device according to claim 2,
A grommet processing device in which the meandering path of the twisting device is formed by a plurality of pulleys.

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