Metal wire automatic binding device and method using bobbin

Abstract

To provide a metal wire automatic binding device and method capable of suppressing disorder even if a flexural rigidity of arranged metal wires is high, and smoothly binding an end part of the metal wires all together with a bobbin.SOLUTION: A metal wire automatic binding device and method include: inserting a part of a plurality of aligned metal wires S just before being wound around a bobbin 17 into a slit 12a of a separation prevention tool 12 to bind the wires all together and restricting a movement in a width direction; pressing a part of each metal wire S between the bobbin 17 and the separation prevention tool 12 against an outer peripheral surface of a ring get-in clip 7; rotating in a clockwise direction one or more times a binding head 6 and the ring get-in clip 7 while the bobbin 17 is in a non-rotating state; and after the part of each metal wire S immediately before being wound around the bobbin 17 is passed through a ring part P formed by each metal wire S between the ring get-in clip 7 and the bobbin 17 by retracting a locking part 7c of the ring get-in clip 7, rotating the ring get-in clip 7 which is holding a part of the end edge part of each metal wire S in a clockwise direction together with the binding head 6.SELECTED DRAWING: Figure 9

Description

Technical Field

[0001] The present invention relates to an automatic bundling device and method for metal wire rods on a bobbin. More specifically, when aligning a plurality of metal wire rods and winding them onto a bobbin to automatically bundle the end portions, even for metal wire rods with high bending rigidity, it relates to an automatic bundling device and method for metal wire rods on a bobbin that can suppress disorder and smoothly perform bundling.

Background Art

[0002] Metal wire rods are used as reinforcing materials in rubber products such as rubber hoses. At the manufacturing sites of these rubber products, the metal wire rods wound on a reel (drum) are paid out, and a plurality of metal wire rods are aligned and rewound onto a bobbin. The metal wire rods wound on the bobbin are temporarily stocked and paid out from the bobbin and used during the manufacture of rubber products.

[0003] In order to prevent the winding of each metal wire rod wound on the bobbin from loosening and coming undone, the end portions of the respective metal wire rods are gathered together and bundled so as to tighten the wound metal wire rods from the outer peripheral side. Considerable man-hours are required to bundle the end portions of the respective metal wire rods in this way. Therefore, a device for automating such a bundling process of metal wire rods has been proposed (see Patent Document 1). According to the automatic winding device proposed in Patent Document 1, a series of processes from winding each metal wire rod onto a bobbin to bundling the end portions of these metal wire rods are made more efficient. However, when attempting to wind a metal wire rod with a larger diameter onto a bobbin and bundle the end portion using this automatic winding device, due to the high bending rigidity, the aligned metal wire rods tend to spread irregularly and become disordered. As a result, it becomes difficult to bundle the end portions of the respective metal wire rods together. Therefore, there is room for improvement in suppressing disorder and smoothly performing bundling even for metal wire rods with high bending rigidity when aligning a plurality of metal wire rods, winding them onto a bobbin, and automatically bundling the end portions.

Prior Art Documents

Patent Documents

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-131950 [Summary of the Invention] [Problems to be Solved by the Invention]

[0005] An object of the present invention is to provide an automatic metal wire binding device and method on a bobbin that can suppress entanglement and smoothly bind even a metal wire having high bending rigidity when a plurality of metal wires are aligned and wound around a bobbin and the end portions are automatically bound. [Means for Solving the Problems]

[0006] In order to achieve the above object, the automatic wire bundling device for bobbins of the present invention includes a pair of bobbin chucks that rotatably support a bobbin, a disc-shaped bundling head that is rotatably supported coaxially with one of the bobbin chucks, a ring-dropping clip that protrudes from one surface of the bundling head, a wire holding portion disposed between the bobbin rotatably supported by the pair of bobbin chucks and a supply source of a plurality of metal wires, and a cutter. The plurality of metal wires fed out from the supply source and aligned are wound around the bobbin rotatably supported by the pair of bobbin chucks. Before being wound around the bobbin, the portions of the metal wires are held at predetermined positions in the width direction of the bobbin by the wire holding portion. With the bundling head, the ring-dropping clip is rotated in one direction, so that the portions of the respective metal wires between the bobbin and the wire holding portion are pressed against the outer peripheral surface of the ring-dropping clip. With the bundling head, the ring-dropping clip is rotated one or more times in the one direction, and as each metal wire is wound around the bobbin, a ring portion is formed by each metal wire between the ring-dropping clip and the bobbin. Also, the portions of the respective metal wires immediately before being newly wound around the bobbin protrude beyond the tip side of the ring-dropping clip from the portions forming the ring portions of the respective metal wires and are locked to locking portions. By retracting the locking portions, after passing the portions of the ring portions locked to the locking portions of the respective metal wires, the upstream sides of the portions locked to the locking portions of the respective metal wires are cut by the cutter. While a part of the terminal ends of the cut respective metal wires is held by the ring-dropping clip, with the bundling head, the ring-dropping clip is further rotated in the one direction, so that the terminal ends of the cut respective metal wires are bundled together. In the automatic wire bundling device for bobbins, the outer diameter of each metal wire is 0.35 cm or more and 0.It is 8 cm or less, and has a spread prevention tool that moves to a position close to the bobbin on the supply source side of the bobbin rotatably supported by the pair of bobbin chucks. The portion of each of the metal wire rods immediately before being wound around the bobbin is inserted into the vertically extending slits formed in the spread prevention tool, so that in the spread prevention tool, each of the metal wire rods is in a state where the movement in the width direction is restricted together. In this state, the portion of each of the metal wire rods between the bobbin and the spread prevention tool immediately before being wound around the bobbin is pressed against the outer peripheral surface of the wheel-dropping clip, and the wheel-dropping clip is rotated one or more times in the one direction together with the binding head.

[0007] The automatic bundling method of metal wire in the bobbin of the present invention is to rotatably support a disc-shaped bundling head coaxially with one of a pair of bobbin chucks that rotatably support the bobbin, project a loop clip on one surface of the bundling head, and arrange a wire holding portion between the bobbin rotatably supported by the pair of bobbin chucks and a supply source of a plurality of metal wires. The portion of the plurality of metal wires fed out from the supply source, aligned, and wound around the bobbin before being wound around the bobbin is held at a predetermined position in the width direction of the bobbin by the wire holding portion. While rotating the loop clip in one direction together with the bundling head, the portion of each metal wire between the bobbin and the wire holding portion is pressed against the outer peripheral surface of the loop clip. Rotate the loop clip one or more times in the one direction together with the bundling head to wind each metal wire around the bobbin, form a loop portion by each metal wire between the loop clip and the bobbin, and make the portion of each metal wire immediately before being newly wound around the bobbin protrude to the tip side of the loop clip from the portion forming the loop portion of each metal wire and lock it to a locking portion. After moving the locking portion backward and passing the portion of the loop portion where each metal wire is locked to the locking portion, cut the upstream side of the portion where each metal wire is locked to the locking portion with a cutter. While holding a part of the end portion of each cut metal wire by the loop clip, further rotate the loop clip in the one direction together with the bundling head to bundle the end portions of each cut metal wire together. In the automatic bundling method of metal wire in the bobbin, the outer diameter of each metal wire is 0.35 cm or more and 0.It is 8 cm or less, and by inserting the portion of each of the metal wire rods immediately before being wound around the bobbin into the vertically extending slit formed in the dispersion preventing tool, in the dispersion preventing tool, each of the metal wire rods is bundled together and the movement in the width direction is restricted. In this state, the portion of each of the metal wire rods immediately before being wound around the bobbin between the bobbin and the dispersion preventing tool is pressed against the outer peripheral surface of the undercut clip, and the undercut clip is rotated one or more times in the one direction together with the binding head. This is the gist of the invention.

Advantages of the Invention

[0008] According to the present invention, when the portions of the plurality of metal wire rods wound around the bobbin before being wound around the bobbin are pressed against the outer peripheral surface of the undercut clip, the portions of each of the metal wire rods immediately before being wound around the bobbin are forcibly inserted into the slit of the dispersion preventing tool. Along with this, in the dispersion preventing tool, each of the metal wire rods is bundled together and the movement in the width direction is restricted. Therefore, even if the bending rigidity of each of the metal wire rods is high, the disturbance that tries to spread irregularly is suppressed, so that each of the metal wire rods is bundled together and it becomes easier to press against the outer peripheral surface of the undercut clip more reliably. As a result, it is advantageous for smoothly binding together the end portions of the aligned metal wire rods.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Figure 17

Figure 18

Figure 19

Figure 20

Figure 21

Figure 22

Figure 23

Figure 24

Figure 25

Figure 26

Figure 27

Embodiments for Carrying Out the Invention

[0010] Hereinafter, the automatic wire bundling device and method for a bobbin according to the present invention will be described based on the embodiments shown in the drawings.

[0011] The automatic wire winding and bundling device 1 for a bobbin (hereinafter referred to as the bundling device 1) illustrated in FIGS. 1 to 3 is used to automatically bundle the end portions of a plurality of metal wires S wound around the bobbin 17 in alignment. In FIGS. 2 and 3, an empty bobbin 17 in a state where the metal wire S is not wound is described for reference. The bobbin 17 has a cylindrical bobbin shaft 17a and flanges 17b protruding from both ends thereof. The plurality of aligned metal wires S are wound around the outer peripheral side of the bobbin shaft 17a.

[0012] The metal wire S is, for example, a metal wire used as a reinforcing material such as a rubber hose. Various known materials such as carbon steel and stainless steel are used as the metal wire S. The outer diameter of the metal wire S is, for example, 0.85 cm or less, and even a relatively thick metal wire S with an outer diameter of 0.35 cm or more and 0.85 cm or less can have its end portion smoothly bundled, which is one of the features of this bundling device 1. The number of metal wires S wound around one bobbin 17 in alignment is, for example, 3 or more and 9 or less.

[0013] A plurality of reels are mounted on a reel stand disposed near the bundling device 1. Each reel has a long single metal wire S wound around it. The metal wire S is fed out from each reel and supplied to the bundling device 1. Therefore, these reels serve as the supply source of the metal wire S. In the drawings, the width direction and the longitudinal direction of the bundling device 1 are indicated by arrows W and L, respectively. The horizontal direction perpendicular to the width direction W is the longitudinal direction L. The dashed-dotted line CL in the figure indicates the center in the width direction of the bobbin 17. In FIGS. 1 and 2, the supply source of the metal wire S is disposed on the right side of the bundling device 1.

[0014] This bundling device 1 includes a pair of bobbin chucks 8a and 8b, a disk-shaped bundling head 6 rotatably supported coaxially with one of the bobbin chucks 8a, a ring-inserting clip 7 protruding from one surface of the bundling head 6, a wire holding part 10, a cutter 11, and a dispersion preventer 12. The pair of bobbin chucks 8a and 8b rotatably support a bobbin 17. The wire holding part 10, the cutter 11, and the dispersion preventer 12 are arranged in the longitudinal direction L between the pair of bobbin chucks 8a and 8b and the supply source (reel) of the metal wire S. The width direction (the extending direction of the bobbin axis 17a) of the bobbin 17 mounted on the pair of bobbin chucks 8a and 8b and the pair of bobbin chucks 5a and 5b described later is the direction indicated by the arrow W.

[0015] The bobbin chuck 8a and the bundling head 6 are installed on one surface of the erected base plate 2. The bobbin chuck 8a and the bundling head 6 are independently rotationally driven in opposite directions about their respective central axes by their respective motors. In this embodiment, the bobbin chuck 8a is rotationally driven counterclockwise, and the bundling head 6 is rotationally driven clockwise. Since the ring-inserting clip 7 protrudes from one surface of the bundling head 6, it is rotationally driven in the same direction as the bundling head 6.

[0016] The other bobbin chuck 8b is arranged at a distance from one bobbin chuck 8a in the width direction W. Each of the bobbin chucks 8a and 8b has a protruding part inserted into the bobbin axis 17a. By inserting the protruding parts of the respective bobbin chucks 8a and 8b into the bobbin axis 17a, the bobbin 17 is rotatably supported by the pair of bobbin chucks 8a and 8b. In this embodiment, the protruding part of the other bobbin chuck 8b moves forward and backward in the width direction W, but a structure in which the protruding part of one bobbin chuck 8a or the protruding parts of both bobbin chucks 8a and 8b move forward and backward in the width direction W may also be used. Also, a structure may be adopted in which the other bobbin chuck 8b is rotationally driven instead of one bobbin chuck 8a.

[0017] As illustrated in FIG. 4, the through-clip 7 has a cylindrical pressing portion 7b that moves forward and backward in the width direction W, and a locking portion 7c that moves forward and backward in the width direction W from inside the cylindrical pressing portion 7b. A tip flange 7a is formed at the tip of the locking portion 7c. When the pressing portion 7b and the locking portion 7c move forward and backward and project toward the center in the width direction of the bobbin 17, there will be a locking portion 7c with a reduced diameter between the pressing portion 7b and the tip flange 7a. The rotation locus of the through-clip 7 centered on the central axis of the binding head 6 is located on the outer peripheral side of the outer edge of the flange 17b of the bobbin 17 supported by the pair of bobbin chucks 8a and 8b.

[0018] The wire holding portion 10 holds the portion of each metal wire S wound around the bobbin 17 rotatably supported by the pair of bobbin chucks 8a and 8b before being wound around the bobbin 17 at a predetermined position in the width direction W of the bobbin 17. The wire holding portion 10 restricts the movement of each metal wire S in the width direction W, but may or may not restrict the movement in the vertical direction. In this embodiment, a pair of elongated wire holding portions 10 extending in the vertical direction are arranged at intervals in the width direction W. Each wire holding portion 10 moves forward and backward in the width direction W by a fluid cylinder or the like and approaches and separates from each other. Then, by sandwiching each metal wire S between the pair of wire holding portions 10, the width direction W of each metal wire S is held at a predetermined position. The form of the wire holding portion 10 is not particularly limited as long as it can hold each metal wire S at a predetermined position in the width direction W of the bobbin 17.

[0019] The cutter 11 cuts each metal wire S wound around the bobbin 17. By moving the cutter 11 downward with each metal wire S stretched, each metal wire S is cut to a predetermined length. The cut end of each metal wire S becomes the end. Various known cutting tools can be used for the cutter 11.

[0020] The anti-loosening device 12 is arranged at a position closer to the pair of bobbin chucks 8a and 8b than the wire holding part 10 in the longitudinal direction L. The anti-loosening device 12 moves to a position close to the bobbin 17 on the supply source side of the bobbin 17 rotatably supported by the pair of bobbin chucks 8a and 8b. In this embodiment, the anti-loosening device 12 can move up and down by a fluid cylinder or the like and move downward to a position close to the bobbin 17. The anti-loosening device 12 has a slit 12a extending vertically. The width of the slit 12a is, for example, equal to or greater than the outer diameter (mm) of one metal wire S + 0.1 mm, and equal to or less than the outer diameter (mm) of one metal wire S × the number of metal wires S aligned and wound around one bobbin 17 + 0.1 mm. Incidentally, the outer diameters of the respective metal wires S aligned and wound around one bobbin 17 are substantially the same. The lower end portion of the anti-loosening device 12 is formed in a tapered notch shape that widens downward.

[0021] In this embodiment, the binding device 1 further includes a pair of bobbin chucks 5a and 5b, a disc-shaped winding head 3 rotatably supported coaxially with one of the bobbin chucks 5a, a locking clip 4 protruding from one surface of the winding head 3, a wire guide portion 9, an adjustment roller 13, a guide beak 14, and bobbin lift bases 15a and 15b. The pair of bobbin chucks 5a and 5b are arranged at intervals in the longitudinal direction L with respect to the pair of bobbin chucks 8a and 8b and rotatably support the bobbin 17. The locking clip 4 has a locking portion 4a that moves forward and backward in the width direction W.

[0022] The wire guide portion 9 is arranged between the wire holding part 10 and the pair of bobbin chucks 5a and 5b in the longitudinal direction L. The adjustment roller 13 and the guide beak 14 are arranged between the pair of bobbin chucks 5a and 5b and the supply source (reel) of the metal wire S in the longitudinal direction L.

[0023] A bobbin chuck 5a and a winding head 3 are installed on one side of a provided base plate 2. The bobbin chuck 5a and the winding head 3 are driven to rotate counterclockwise independently of each other about their respective central axes by a motor. Since the locking clip 4 protrudes from one surface of the winding head 3, it is driven to rotate counterclockwise together with the winding head 3.

[0024] The other bobbin chuck 5b is arranged at an interval in the width direction W from one bobbin chuck 5a. Each of the bobbin chucks 5a and 5b has a protruding portion inserted into the bobbin shaft 17a. By inserting the protruding portions of the respective bobbin chucks 5a and 5b into the bobbin shaft 17a, the bobbin 17 is rotatably supported by a pair of bobbin chucks 5a and 5b. In this embodiment, the protruding portion of the other bobbin chuck 5b moves forward and backward in the width direction W, but a structure in which the protruding portion of one bobbin chuck 8a or the protruding portions of both bobbin chucks 5a and 5b move forward and backward in the width direction W may also be used. Also, a structure may be adopted in which the other bobbin chuck 5b is driven to rotate instead of one bobbin chuck 5a.

[0025] The locking clip 4 is provided with a locking portion 4a that moves forward and backward in the width direction W at the tip. The rotation locus of the locking clip 4 about the central axis of the winding head 3 is located on the outer peripheral side of the outer edge of the flange 17b of the bobbin 17 supported by the pair of bobbin chucks 5a and 5b.

[0026] The adjusting roller 13 guides the metal wire S in a predetermined direction. A required number of various known adjusting rollers 13 are installed at required positions. In addition, a measuring roll for detecting the length of the fed-out metal wire S and the like are arranged between the supply source of the metal wire S and the adjusting roller 13.

[0027] The guide beak 14 is installed so as to be repeatedly movable in the width direction W, and transfers the metal wire S locked to the attached guide roller 14a from the supply source side to the take-up head 3 side. To move the guide beak 14 in the width direction W, for example, a fluid cylinder or the like is used. In this embodiment, a ball screw that is rotationally driven by a servo motor penetrates and is screwed into the guide beak 14 in the width direction W, and the guide beak 14 repeatedly moves in the width direction W as the ball screw rotates right and left. The wire guide portion 9 is appropriately installed to span each of the fed-out metal wires S.

[0028] The bobbin lift bases 15a and 15b are attached to the tip of a rod of a fluid cylinder or the like, and are installed below the pair of bobbin chucks 5a and 5b and the pair of bobbin chucks 8a and 8b. Each of the bobbin lift bases 15a and 15b can move up and down and move to the same height position as the pair of bobbin chucks 5a and 5b and the pair of bobbin chucks 8a and 8b. Each of the bobbin lift bases 15a and 15b can be integrally moved in the longitudinal direction L by a bobbin moving portion 16 such as a fluid cylinder.

[0029] Next, an example of a procedure for automatically bundling the end portions of a plurality of metal wires S wound in alignment on the bobbin 17 using the bundling device 1 will be described.

[0030] As illustrated in FIGS. 1 to 3, the bobbin 17 is rotatably mounted on the pair of take-up chucks 5a and 5b. A plurality of metal wires S fed out from the supply source are passed through the adjusting roller 13 and the guide beak 14 (guide roller 14a), and their tip portions are locked and gripped by the locking portions 4a of the locking clips 4. Next, without rotating the bobbin 17, the locking clip 4 is rotated counterclockwise a plurality of times together with the take-up head 3, and the tip portions of the respective metal wires S are wound around and fixed to the bobbin shaft 17a.

[0031] Next, the gripping by the locking portion 4a for each metal member S is released, and the bobbin 17 is rotated counterclockwise by rotationally driving one of the bobbin chucks 5a counterclockwise. As a result, a plurality of metal wire rods S fed out from the supply source pass through the adjustment roller 13 and the guide beak 14 (guide roller 14a) and are supplied to the bobbin 17. At this time, by repeatedly moving the guide beak 14 in the width direction W, each of the supplied metal wire rods S is wound around the bobbin 17 (bobbin shaft 17a) so as to be uniform in the width direction W.

[0032] After each metal wire rod is wound around the bobbin 17 by a predetermined length, the protruding portion protruding toward the bobbin shaft 17a of the bobbin chuck 5b is retracted in the width direction W. As a result, the bobbin 17 is placed on the bobbin lift table 15a disposed below. Next, the bobbin lift table 15a is moved in the longitudinal direction L to move the bobbin 17 to a position below the binding head 6 (pair of bobbin chucks 8a, 8b). At this time, the protruding portion of the bobbin chuck 8b is in the retracted position.

[0033] Next, the bobbin lift table 15a is moved upward to raise the bobbin 17 to the positions of the pair of bobbin chucks 8a, 8b. Next, the protruding portion of the bobbin chuck 8b is moved toward the bobbin shaft 17a, and the protruding portions of the respective bobbin chucks 8a, 8b are inserted into the bobbin shaft 17a, and the bobbin 17 is rotatably mounted on the pair of bobbin chucks 8a, 8b as illustrated in FIGS. 5 and 6. With each metal wire rod S wound around the bobbin 17 remaining connected to the supply source, the bobbin 17 is moved from the winding head 3 (pair of bobbin chucks 5a, 5b) to the binding head 6 (bobbin chucks 8a, 8b).

[0034] To move the bobbin 17 around which the metal wire S is wound from the winding head 3 to the binding head 6, various known mechanisms can be used, not limited to the bobbin lift table 15a, and a robot arm or the like may be used. In this embodiment, since two bobbin lift tables 15a and 15b are arranged in the longitudinal direction L, when the bobbin 17 is moved from the winding head 3 to the binding head 6 by one bobbin lift table 15a, a new empty bobbin 17 can be placed on the other bobbin lift table 15b and supplied to the winding head 3.

[0035] Next, without rotating the binding head 6, the bobbin chuck 8a is rotationally driven counterclockwise to rotate the bobbin 17 supported by the pair of bobbin chucks 8a and 8b counterclockwise as illustrated in FIGS. 5 and 6, and to apply tension to each metal wire S. Thereafter, until the binding process is completed, the bobbin 17 (bobbin chuck 8a) is maintained in a fixed state without being rotated. If the bending rigidity of each metal wire S is relatively small, by applying such tension, the portion between the wire guide portion 9 of each metal wire S and the bobbin 17 converges into a bundle. However, when each metal wire S has a large diameter (for example, an outer diameter of 0.35 cm or more), since the bending rigidity is high, each metal wire S spreads irregularly and does not bundle, and becomes a scattered state as illustrated in FIG. 7.

[0036] In the binding process of binding the end portions of the respective metal wires S, it is necessary to wind while pressing each metal wire S against a predetermined position of the loop-through clip 7. However, as illustrated in FIG. 7, if the metal wires S spread and scatter in the width direction W, it is not possible to press all the metal wires S against the predetermined position of the loop-through clip 7. Therefore, this binding device 1 has a spread prevention tool 12.

[0037] Next, as illustrated in FIG. 8, the portion of each metal wire S before being wound around the bobbin 17 is sandwiched by a pair of wire holding portions 10 that are brought close to each other. Thereby, each metal wire S is held at a predetermined position in the width direction W of the bobbin 17 (a position closer to one bobbin chuck 8a in the width direction W). Further, the pressing portion 7b of the loop clip 7 is projected toward the center in the width direction W.

[0038] Next, in this state, as illustrated in FIG. 9, the anti-loosening tool 12 is moved downward, and the portion of each metal wire S immediately before being wound around the bobbin 17 is inserted into the slit 12a formed in the anti-loosening tool 12. Incidentally, the shortest distance X in the longitudinal direction L between the outermost periphery of the metal wire S wound around the bobbin 17 and the slit 12a is, for example, within 5 cm, more preferably within 3 cm. Thereby, the anti-loosening tool 12 makes each metal wire S into a bundle and restricts the movement in the width direction W. By forcibly inserting each metal wire S into the narrow slit 12a immediately before being wound around the bobbin 17 while applying tension to each metal wire S, as illustrated in FIG. 10, the spread of each metal wire S in the width direction W between the bobbin 17 and the anti-loosening tool 12 is suppressed and converges.

[0039] In this state, as illustrated in FIG. 11, the loop clip 7 is rotated clockwise together with the binding head 6, and the portion of each metal wire S between the bobbin 17 and the anti-loosening tool 12 is pressed against the outer peripheral surface (lower surface) of the pressing portion 7b of the loop clip 7. Since each metal wire S between the bobbin 17 and the anti-loosening tool 12 is converged in the width direction W by the anti-loosening tool 12, it is advantageous for reliably pressing against the outer peripheral surface of the pressing portion 7b of the loop clip 7.

[0040] As illustrated in FIGS. 12 and 13, subsequently, the loop clip 7 is rotated clockwise together with the binding head 6. If the loop clip 7 is rotated clockwise as it is together with the binding head 6, it interferes with the anti-loosening tool 12, so the anti-loosening tool 12 is moved upward to be retracted. Thereby, each metal wire S is pulled by the loop clip 7 and further supplied to the bobbin 17 for winding.

[0041] As illustrated in FIGS. 14 and 15, continue to rotate the loop-through clip 7 clockwise together with the tying head 6 to further wind each metal wire S around the bobbin 17. In this way, after pressing each metal wire S against the outer peripheral surface of the pressing portion 7b of the loop-through clip 7, rotate the loop-through clip 7 clockwise one or more rotations (for example, about 1.2 to 1.3 rotations) together with the tying head 6 to wind each metal wire S around the bobbin 17. As a result, as illustrated in FIG. 15, a loop portion P is formed by each metal wire S between the loop-through clip 7 and the bobbin 17.

[0042] Next, as illustrated in FIG. 16, project the tip flange 7a and the locking portion 7c of the loop-through clip 7 toward the center in the width direction W of the bobbin 17. Also, move the pair of wire holding portions 10 toward the center in the width direction W of the bobbin 17. Thereby, the portion of each metal wire S immediately before being newly wound around the bobbin 17 is brought into a state of being locked to the locking portion 7c that protrudes to the tip side of the loop-through clip 7 with respect to the portion forming the loop portion P of each metal wire S.

[0043] Next, as illustrated in FIG. 17, with the portion of each metal wire S immediately before being newly wound around the bobbin 17 in a state of being locked to the locking portion 7c, retract the tip flange 7a and the locking portion 7c. Thereby, the locking portion 7c is housed inside the cylindrical pressing portion 7b.

[0044] Next, as illustrated in FIG. 18, retract the protruding pressing portion 7b in the width direction W. Thereby, the portions of each metal wire S that were wound around the outer peripheral surface of the pressing portion 7b to form the loop portion P fall off from the outer peripheral surface of the pressing portion 7b. That is, the portion of the formed loop portion P that is in a state of being locked to the locking portion 7c of each metal wire S is passed through.

[0045] After that, as illustrated in FIG. 19, the loop-through clip 7 is slightly rotated clockwise together with the bundling head 6 to apply tension to each metal wire S, and then the rotation is stopped. Then, the cutter 11 is moved downward to cut the upstream side of each metal wire S from the portion locked to the locking portion 7c of the metal wire S with the cutter 11. Each metal wire S is cut to a predetermined length.

[0046] Next, as illustrated in FIGS. 20 and 21, while holding a part of the terminal end of each cut metal wire S by the loop-through clip 7 (locking portion 7c), the loop-through clip 7 is further rotated clockwise together with the bundling head 6. In this process, the terminal end portions of the respective metal wires S are wound around the bobbin 17 while passing through the locking portion 7c, and the ring portions P become smaller. Then, the terminal ends of the cut metal wires S are gathered together and bundled so as to tighten the metal wires S wound around the bobbin 17 from the outer peripheral side. Finally, as illustrated in FIG. 22, the terminal ends of the respective metal wires S are detached from the loop-through clip 7, and the bundling process is completed.

[0047] When the terminal ends of the respective metal wires S are gathered together and bundled, the bobbin 17 is removed from the pair of bobbin chucks 8a and 8b and discharged from the bundling device 1. Then, in sequence, the bobbins 17 around which a plurality of metal wires S are aligned and wound are mounted on the bobbin chucks 8a and 8b, and the bundling process is performed.

[0048] As described above, the portion of each metal wire immediately before being wound around the bobbin is forcibly inserted into the slit 12a of the anti-scattering tool 12, so that the movement in the width direction W is restricted when bundled together. Therefore, even if each metal wire S has a high bending rigidity specification such as an outer diameter of 0.35 cm or more and 0.8 cm or less, the disorder that tends to spread irregularly is suppressed, and it becomes easier to press against the outer peripheral surface of the pressing portion 7b of the loop-through clip 7 when bundled together. As a result, it is advantageous for smoothly bundling the gathered terminal ends of the aligned metal wires S together.

[0049] In this embodiment, as illustrated in FIGS. 20 to 21, while a part of the end portion of each cut metal wire S is held by the loop-through clip 7, when the loop-through clip 7 together with the binding head 6 is further rotated clockwise, the holding force of the loop-through clip 7 on a part of the end portion of each cut metal wire S is relaxed. Specifically, in this process, the tip flange 7a and the locking portion 7c of the loop-through clip 7 slightly move forward and protrude toward the center in the width direction W of the bobbin 17. Thereby, the friction between each metal wire S passing through the locking portion 7c and the locking portion 7c is reduced, and this holding force is relaxed.

[0050] In this process, in the prior art where the holding force of the loop-through clip 7 on a part of the end portion of each cut metal wire S is not relaxed, when passing through the locking portion 7c, the end portion of each metal wire S is strongly handled and thus deformed into a coil shape. If the end portion of each metal wire S is deformed into a coil shape, there will occur a problem that the handleability deteriorates in the subsequent processes of the metal wire S wound around the bobbin 17. In this embodiment, since the above holding force is relaxed, the end portion of each metal wire S is not strongly handled, and the problem of being deformed into a coil shape can be avoided.

[0051] Another embodiment of the binding device 1 illustrated in FIGS. 23 and 24 has the wire holding portion 10 omitted as compared with the previous embodiment. And the anti-scattering tool 12 becomes larger in the width direction W and longer in the vertical direction, and the slit 12a also becomes longer. Other configurations are substantially the same as those of the previous embodiment. In this embodiment, the anti-scattering tool 12 is also used as the wire holding portion 10 of the previous embodiment. The anti-scattering tool 12 may be movable not only vertically but also in the width direction W.

[0052] Then, as illustrated in FIG. 25, the anti-loosening device 12 is moved downward, and the portion of each metal wire S immediately before being wound around the bobbin 17 is inserted into the slit 12a formed in the anti-loosening device 12. Thereby, the anti-loosening device 12 keeps each metal wire S together and restricts the movement in the width direction W. By forcibly inserting each metal wire S into the narrow slit 12a immediately before being wound around the bobbin 17 while applying tension to each metal wire S, the spread of each metal wire S in the width direction W between the bobbin 17 and the anti-loosening device 12 is suppressed and converges. That is, the anti-loosening device 12 holds each metal wire S at a predetermined position in the width direction W of the bobbin 17 (a position closer to one bobbin chuck 8a in the width direction W), and converges the portions immediately before being wound around the bobbin 17 together.

[0053] Also, as illustrated in FIG. 26, the pressing portion 7b of the undercut clip 7 is projected toward the center in the width direction W of the bobbin 17. Next, in the same manner as in the previous embodiment, the undercut clip 7 together with the binding head 6 is rotated clockwise, and the portion between the bobbin 17 and the anti-loosening device 12 of each metal wire S is pressed against the outer peripheral surface (lower surface) of the pressing portion 7b of the undercut clip 7. Since each metal wire S between the bobbin 17 and the anti-loosening device 12 is converged in the width direction W by the anti-loosening device 12, it is advantageous for pressing against the outer peripheral surface of the pressing portion 7b of the undercut clip 7. While keeping the binding head 6, the undercut clip 7 is rotated clockwise one or more times to wind each metal wire S around the bobbin 17.

[0054] In this embodiment, the anti-loosening device 12 is installed at a position where it does not interfere with the rotation of the undercut clip 7. Therefore, even when the undercut clip 7 rotates, the anti-loosening device 12 does not move upward, and each metal wire S wound around the bobbin 17 always passes through the slit 12a.

[0055] Then, as illustrated in FIG. 27, each metal wire S is cut to a predetermined length by the cutter 11. The subsequent steps are also performed in the same manner as in the previous embodiment, and the end portions of the cut metal wires S are bundled together to bind the metal wires S wound around the bobbin 17 from the outer peripheral side so as to tighten them.

[0056] The present disclosure includes the following inventions. Invention 1: A pair of bobbin chucks rotatably supporting a bobbin, a disk-shaped binding head rotatably supported coaxially with one of the bobbin chucks, a ring-creeping clip protruding from one surface of the binding head, and a wire holding portion disposed between the bobbin rotatably supported by the pair of bobbin chucks and a supply source of a plurality of metal wires, and a cutter. Before being wound around the bobbin, a plurality of metal wire rods fed out from the supply source and aligned are wound around the bobbin rotatably supported by the pair of bobbin chucks. The portion before being wound around the bobbin is held at a predetermined position in the width direction of the bobbin by the wire holding portion. As the ring-passing clip is rotated in one direction together with the binding head, the portion between the bobbin and the wire holding portion of each metal wire rod is pressed against the outer peripheral surface of the ring-passing clip. The ring-passing clip is rotated one or more times in the one direction together with the binding head, and each metal wire rod is wound around the bobbin, so that a ring portion is formed by each metal wire rod between the ring-passing clip and the bobbin. The portion of each metal wire rod immediately before being newly wound around the bobbin is locked to a locking portion protruding to the tip side of the ring-passing clip from the portion forming the ring portion of each metal wire rod. By retracting the locking portion, after passing through the portion of the ring portion locked to the locking portion of each metal wire rod, the upstream side of the portion locked to the locking portion of each metal wire rod is cut by the cutter. A part of the end portion of each cut metal wire rod is held by the ring-passing clip. In an automatic binding device for metal wire rods on a bobbin in which the end portions of the cut metal wire rods are bundled together by further rotating the ring-passing clip in the one direction together with the binding head, The outer diameter of each of the metal wire rods is 0.35 cm or more and 0.8 cm or less, and there is an anti-loosening device that moves to a position close to the bobbin on the supply source side of the bobbin rotatably supported by the pair of bobbin chucks. The portion of each of the metal wire rods immediately before being wound around the bobbin is inserted into a vertically extending slit formed in the anti-loosening device, so that in the anti-loosening device, each of the metal wire rods is in a state where the movement in the width direction is restricted in a bundled manner. In this state, the portion of each of the metal wire rods immediately before being wound around the bobbin between the bobbin and the anti-loosening device is pressed against the outer peripheral surface of the undercut clip, and the undercut clip is rotated one or more times in the one direction together with the binding head, which is an automatic binding device for metal wire rods on a bobbin. Invention 2: The automatic binding device for metal wire rods on a bobbin according to Invention 1, wherein the number of the metal wire rods to be aligned is 3 or more and 9 or less. Invention 3: The automatic binding device for metal wire rods on a bobbin according to Invention 2, wherein the width of the slit is 0.1 mm or more than the outer diameter (mm) of one metal wire rod and 0.1 mm or less than the outer diameter (mm) × the number of the metal wire rods to be aligned. Invention 4: The automatic binding device for metal wire rods on a bobbin according to any one of Inventions 1 to 3, wherein the anti-loosening device is used as the wire holding portion. Invention 5: While a part of the end portion of each of the cut metal wire rods is held by the undercut clip, when the undercut clip is further rotated in the one direction together with the binding head, the holding force of the undercut clip on the part of the end portion of each of the cut metal wire rods is relaxed. The automatic binding device for metal wire rods on a bobbin according to any one of Inventions 1 to 4. Invention 6: A disk-shaped binding head is rotatably supported coaxially with one of a pair of bobbin chucks that rotatably support a bobbin, an undercut clip is projected on one surface of this binding head, and a wire holding portion is arranged between the bobbin rotatably supported by the pair of bobbin chucks and a supply source of a plurality of metal wire rods. Before the plurality of metal wire rods fed out from the supply source, aligned, and wound around the bobbin are wound around the bobbin, the portion is held at a predetermined position in the width direction of the bobbin by the wire holding portion, and together with the binding head, the ring-passing clip is rotated in one direction, and the portion between the bobbin and the wire holding portion of each metal wire rod is pressed against the outer peripheral surface of the ring-passing clip, and together with the binding head, the ring-passing clip is rotated one or more times in the one direction to wind each metal wire rod around the bobbin, and a ring portion is formed by each metal wire rod between the ring-passing clip and the bobbin, and the portion of each metal wire rod immediately before being newly wound around the bobbin protrudes to the tip side of the ring-passing clip from the portion forming the ring portion of each metal wire rod and is locked to the locking portion, and after the locking portion is retracted and the portion locked to the locking portion of each metal wire rod in the ring portion is passed through, the upstream side of the portion locked to the locking portion of each metal wire rod is cut by a cutter, and while holding a part of the end portion of each cut metal wire rod by the ring-passing clip, together with the binding head, the ring-passing clip is further rotated in the one direction to bundle the end portions of each cut metal wire rod together. In an automatic bundling method of metal wire rods on a bobbin, The outer diameter of each metal wire rod is 0.35 cm or more and 0.8 cm or less, and by inserting the portion of each metal wire rod immediately before being wound around the bobbin into the vertically extending slit formed in the anti-loosening device, the anti-loosening device bundles each metal wire rod together and restricts the movement in the width direction. In this state, the portion of each metal wire rod immediately before being wound around the bobbin between the bobbin and the anti-loosening device is pressed against the outer peripheral surface of the ring-passing clip, and together with the binding head, the ring-passing clip is rotated one or more times in the one direction. An automatic bundling method of metal wire rods on a bobbin.

Explanation of Reference Numerals

[0057] 1 Binding device 2 Base plate 3 Take-up head 4 Locking clip 4a Locking part 5a, 5b Bobbin chuck 6 Binding head 7 Ring-piercing clip 7a Tip flange 7b Pressing part 7c Locking part 8a, 8b Bobbin chuck 9 Wire guide part 10 Wire holding part 11 Cutter 12 Anti-scattering device 12a Slit 13 Adjusting roller 14 Guide beak 14a Guide roller 15a, 15b Bobbin lift platform 16 Bobbin moving part 17 Bobbin 17a Bobbin shaft 17b Flange S Metal wire P Wheel part

Claims

1. The strapping device includes a pair of bobbin chucks for rotatably supporting a bobbin, a disk-shaped strapping head rotatably supported coaxially with one of the bobbin chucks, a ring-submerging clip protruding from one surface of the strapping head, a wire holding portion disposed between the bobbin rotatably supported by the pair of bobbin chucks and a supply source of a plurality of metal wires, and a cutter, The wire holding portion holds the portions of the metal wires before being wound onto the bobbins, the portions being held at a predetermined position in the width direction of the bobbins by the wire holding portion. In this state, the ring-sinking clip is rotated in one direction together with the binding head, so that the portions of the metal wires between the bobbins and the wire holding portion are pressed against the outer peripheral surface of the ring-sinking clip. The ring-sinking clip is rotated in one direction together with the binding head one or more times to wind the metal wires onto the bobbins, so that a ring portion is formed between the ring-sinking clip and the bobbin by each of the metal wires, and the bobbin is rotated in the one direction together with the binding head one or more times to wind the metal wires onto the bobbins. a portion of each of the metal wires just before being newly wound around a bobbin is locked by a locking portion that protrudes toward the tip of the ring-submerging clip beyond the portion of each of the metal wires that forms the loop portion, the locking portion is moved backward to allow the portion of each of the metal wires that is locked by the locking portion to pass through the loop portion, and then the upstream side of each of the metal wires that is locked by the locking portion is cut by the cutter, and while a portion of the end portion of each of the cut metal wires is held by the ring-submerging clip, the ring-submerging clip is further rotated in the one direction together with the binding head, thereby binding the end portions of each of the cut metal wires together, an anti-fragmentation tool that moves to a position close to the bobbin on the supply source side of the bobbin rotatably supported by the pair of bobbin chucks, each of the metal wires having an outer diameter of 0.35 cm or more and 0.8 cm or less, and a non-fragmentation tool that moves to a position close to the bobbin on the supply source side of the bobbin rotatably supported by the pair of bobbin chucks, wherein a portion of each of the metal wires just before it is wound onto the bobbin is inserted into a slit extending vertically formed in the non-fragmentation tool, so that the non-fragmentation tool holds each of the metal wires together and restricts their movement in the width direction, and in this state, the portions of each of the metal wires between the bobbin and the non-fragmentation tool just before it is wound onto the bobbin are pressed against the outer peripheral surface of the ring-submerging clip, and the ring-submerging clip is rotated one or more rotations in one direction together with the binding head.

2. 2. The automatic bundling device for metal wires on a bobbin according to claim 1, wherein the number of the metal wires to be aligned is 3 or more and 9 or less.

3. 3. The automatic bundling device for metal wires on a bobbin as described in claim 2, wherein the width of the slit is equal to or greater than the outer diameter (mm) of one of the metal wires + 0.1 mm, and is equal to or less than the outer diameter (mm) x the number of the metal wires to be aligned + 0.1 mm.

4. 4. The automatic bundling device for metal wires with bobbins according to claim 1, wherein the wire holding portion is a device for preventing the wires from coming apart.

5. An automatic binding device for metal wires with bobbins as described in any one of claims 1 to 3, wherein when the ring submersion clip is further rotated in the one direction together with the binding head while the portion of the end of each of the cut metal wires is held by the ring submersion clip, the holding force of the ring submersion clip on the portion of the end of each of the cut metal wires is relaxed.

6. A disk-shaped strapping head is rotatably supported coaxially with one of a pair of bobbin chucks that rotatably support a bobbin, a ring-submerging clip is protruded from one surface of the strapping head, and a wire holding portion is disposed between the bobbin rotatably supported by the pair of bobbin chucks and a supply source of a plurality of metal wires, With the portions of the metal wires that have been unwound from the supply source, aligned, and wound around the bobbin held at a predetermined position in the width direction of the bobbin by the wire holding portion, the ring-submerging clip is rotated in one direction together with the binding head to press the portions of the metal wires between the bobbin and the wire holding portion against the outer circumferential surface of the ring-submerging clip, and the ring-submerging clip is rotated one or more times in the one direction together with the binding head to wind each of the metal wires around the bobbin, forming ring portions between the ring-submerging clip and the bobbin with each of the metal wires, and rewinding each of the metal wires around the bobbin. a loop portion of each of the metal wires just before being removed is locked to a locking portion that protrudes toward the tip of the loop clip beyond the portion that forms the loop portion of each of the metal wires, the locking portion is moved backward to allow the loop portion to pass through the portion of each of the metal wires that is locked to the locking portion, and then the upstream side of the portion of each of the metal wires that is locked to the locking portion is cut with a cutter, and while a portion of the end portion of each of the cut metal wires is held by the loop clip, the loop clip is further rotated in the one direction together with the binding head to bundle and bind the end portions of each of the cut metal wires, A method for automatically bundling metal wires with a bobbin, in which the outer diameter of each of the metal wires is 0.35 cm or more and 0.8 cm or less, and the portion of each of the metal wires just before being wound onto the bobbin is inserted into a slit extending vertically formed in a wire-unraveling prevention device, so that the wire-unraveling prevention device bundles together the metal wires and restricts their movement in the width direction, and in this state, the portion of each of the metal wires between the bobbin and the wire-unraveling prevention device just before being wound onto the bobbin is pressed against the outer peripheral surface of the ring-submerging clip, and the ring-submerging clip is rotated one or more rotations in one direction together with the binding head.

Images