JP4452057B2 - Coil forming method and apparatus - Google Patents

Description

  The present invention relates to a method and apparatus for forming a coil such as a tire reinforcing coil, a spring coil, and a flexible tube coil.

When a single wire is used instead of a cord as a tire reinforcing wire, it is necessary to process the wire into a corrugated spiral or coil because the single wire steel wire lacks flexibility and extensibility as it is. In that case, processing in a spiral shape is also possible by a conventional technique (for example, see Patent Document 1). However, with the diversification of the usage of the wire as the tire reinforcing material, it is difficult to process into a coil shape that is softer than the corrugated shape and has a large elongation, because it is a long object.
JP-A-6-25983

  There is a method of using the principle of a spring winding machine as a method of making a long coil in the prior art, but in that method, the product is sent out while rotating, so to make a long object, while rotating it It is necessary to rotate the winder to wind the product to be sent out, or to pass the product through an under-roll bar or tube that rotates in synchronism, and the device becomes large and expensive, and the length of the product is 5 m. You can't make any longer items.

  In addition, there is a method of winding around a drum that rotates synchronously using the principle of a flexible tube manufacturing machine. However, in this method, the product is swung around, so that there is a risk that the quality may be deteriorated if the tire is weak such as for tire reinforcement.

  Furthermore, using the principle of a wrapping machine that has been used in the manufacture of tire cords, it is also possible to wind a wire rod around a long core bar and then remove it from the core bar to take out a long coil. . However, in this method, the method of supporting the core metal is a problem, and the length of the product is limited.

  Therefore, it is a problem to be able to manufacture a long coil with stable quality at low cost.

In the present invention, a linear body wound around a reel on a shaft is fed out by a rotating fryer and wound around a core metal in a coil shape via a pitch adjusting jig, and the wound linear body is a winding start end round portion of the core metal while gripping across the coil radial direction by the gripper in a more metallic core axial outward position, the gripper and the direction opposite to the rotation of the flyer a metal core, continuously variable so that the coil after spring back no longer rotate is rotated at a speed adjusted by the operation of the machine saw write winding striatal on core metal successively extruded while sliding to the core axial direction toward the winding core tip side of the core metal, out of the gripper Meanwhile it is intended to provide a coil-forming method characterized by a coil obtained by removing the stress to cause a spring-back, also as an apparatus for use in this method, the reel on the shaft And feeding at flyer that rotates him striatum, pitch adjustment jig to the core metal of the coil windings corner portion between the flange portion and the winding core portion constitutes a starting end rounded part winding the starting end position of the winding striatum A winding mechanism for winding through a tool, and a wire rod wound around the cored bar by the winding mechanism is gripped from the coil radial direction by a gripping tool at a position outside the cored bar axial direction from the winding start end round part of the cored bar. While rotating the gripping tool and the metal core in the opposite direction to the rotation of the fryer, rotate the coiled body on the metal core at a speed adjusted by the operation of the continuously variable transmission so that the coil after the spring back does not rotate. Entrainment, slide out in the direction of the core axis toward the tip of the core of the core, and then push it out sequentially. There is provided a coil forming apparatus characterized in that is constituted by the winding mechanism and the coil.

  According to this method and apparatus, the wire body is gripped in the coil radial direction on the core bar, drawn out by a rotating flyer and wound around the core bar, and the wound wire body is wound in the coil radial direction. It is gripped and rolled up by the amount of the springback, and becomes a product that does not rotate and revolve without being revolved. Therefore, the coil can be processed stably and continuously, and a long coil with stable quality can be manufactured at low cost.

In the coil forming apparatus, for example, a shaft is rotatably supported, a cored bar is disposed on an axial extension of the shaft, a shaft, a reel that rotates around the shaft, a flyer that rotates in conjunction with the reel, a first transmission device for transmitting rotation to the flyer, and pitch adjustment jig mechanism wound with a metal core is formed, and the gripper, in a direction opposite to the rotation of the flyer in the gripper and the metal core, the spring It is preferable that the winding mechanism is configured with the second transmission device that transmits the rotation adjusted to a speed at which the coil after the back does not rotate . Thereby, a long coil with stable quality can be manufactured at low cost.

  In addition, there are a metal fitting that is connected to the flyer, rotates around the core bar, and is pressed from the inner side in the axial direction of the core bar against the linear body fed out through the fryer, It is preferable that the pitch adjusting jig is composed of a die-shaped metal fitting that guides the brazed wire body toward the winding start end round portion of the core metal in a direction orthogonal to the core metal axis direction. Thereby, the pitch of the coil to shape | mold can be stabilized.

  As described above, the present invention makes it possible to manufacture a long coil with stable quality at low cost.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 to 4 show a coil forming apparatus as an example of the embodiment. FIG. 1 is a front sectional view of the coil forming apparatus, FIG. 2 is a right side view of the coil forming apparatus, FIG. 3 is an enlarged view of a main portion seen from a left side of the coil forming apparatus, and FIG. FIG.

  As shown in FIGS. 1 and 2, the coil forming apparatus shown in this example is cantilevered substantially horizontally by a support base 1 by applying a lapping machine feeding mechanism conventionally used in manufacturing tire cords and the like. A reel 3 is rotatably mounted on the shaft 2, and a flyer 5 is rotatably mounted with a friction plate 4 in front of the reel 3 (on the free end side of the shaft 2), and the axis of the free end side of the shaft 2 is extended. The cored bar 6 is arranged so as to protrude forward from the fryer 5. A pulley 7 that rotates integrally with the fryer 5 is disposed behind the reel 2, a motor 9 is installed on the apparatus base 8, and a pulley 10 is provided at the tip of the output shaft of the motor 9. A first transmission belt 11 is stretched between 10. The rotation of the motor 9 is transmitted to the fryer 5 by the first transmission device constituted by the pulleys 7 and 10 and the belt 11, and further transmitted to the reel 3 through the friction plate 4.

  The cored bar 6 includes a connecting portion 12 that is integrally connected to the shaft 2 side, a flange portion 13 that defines the front surface of the connecting portion 12, a winding core portion 14 that extends forward of the flange portion 13, and a front side of the winding core portion 14. The flange portion 13 is located in front of the flyer 5 in the axial direction of the shaft, and the corner portion between the flange portion 13 and the winding core portion 14 is a starting end position for winding the filament. A winding start end round portion 16 is formed.

  Further, the flyer 5 has a metal fitting 17 and a die-shaped metal fitting as a pitch adjusting metal fitting that rotates around the winding start end round portion 16 of the metal core 6 integrally with the flyer 5 in front of the shaft axial direction (core metal axial direction). 18 are connected.

  A gear 19 is fixed to the rear end of the shaft 2 penetrating the support base 1, and a pulley 20 is fixed to the outside of the gear 19.

  A pair of bearing bases 23 and 24 are fixed to a support frame 22 fixed to the lower surface of the frame upper plate 21 on the apparatus base 8 so as to be divided into a front end side and a rear end side in the shaft axis direction. A shaft 25 for transmission is supported on the bases 23 and 24 so as to be rotatable in an arrangement parallel to the shaft 2 just below the shaft 2 and the cored bar 6. The support base 1 is fixed to the upper surface of the frame upper plate 21.

  Further, in the front of the apparatus, the lower part is supported by the transmission shaft 25 via the bearing device 26 at the position of the winding core portion 14 outside the winding start end round portion 16 of the core metal 6 in front of the shaft 2 in the axial direction. At the same time, a long and long support plate 28 is disposed which is bolted to the support frame 22 at a single point, penetrates the cored bar 6 at the top, and rotatably supports the holding tool 27 for holding the coil.

  As shown in FIG. 3, the gripper 27 includes a ring-shaped support body 29 and gripping bodies 32 and 33 that are fitted into a pair of left and right support holes 30 and 31 that are formed in the support body 29 in the radial direction. And springs 34 and 35 for urging the gripping bodies 32 and 33 from the left and right sides toward the winding core portion 14 of the cored bar 6. The support 29 is supported by the support plate 28 via the bearing 36. A pulley 37 is fixed to the support 29 on the front side in the core metal axis direction.

  As shown in FIGS. 1 and 2, a pulley 38 having the same diameter as the pulley 20 on the shaft 2 side is arranged at the rear end portion of the transmission shaft 25 at a position aligned with the pulley 20 at the rear end portion of the shaft 2. It is fixed. A second transmission belt 39 is stretched around the upper and lower pulleys 20 and 38.

  Further, a bearing boss 40 is fixed to a portion of the front end of the transmission shaft 25 supported by the bearing device 26 below the support plate 28, and a pulley on the gripping tool 27 side is provided on the front surface of the bearing boss 40. A pulley 41 having the same diameter as 37 is fixed in a vertically arranged manner. A third transmission belt 42 is stretched around the upper and lower pulleys 37 and 41.

Further, as shown in FIG. 2, on the upper surface of the frame upper plate 21, an input side pulley 43 is positioned at a position aligned vertically with the pulley 10 at the tip of the output shaft of the motor 9. An output-side gear 44 is located at a position where it meshes with the gear 19, and a well-known continuously variable transmission 46 is installed that can change the rotational speed ratio between the input side and the output side continuously by operating a lever 45. Yes. The first transmission belt 11 that is stretched between the pulley 7 on the flyer 5 side and the pulley 10 at the tip of the output shaft of the motor 9 is also stretched on the pulley 43 of the continuously variable transmission 46.

  In this coil forming apparatus, a wire rod S such as a steel wire is wound around the reel 3, the tip of the wire rod S is pulled out through the fryer 5, and is passed through the V groove 17a (see FIG. 4) of the metal fitting 17. Further, it is passed through the die-shaped metal fitting 18, wound around the core metal 6, and pressed by the gripping tool 27. This completes the setting for forming the coil. By driving the motor 9 in this state, the filament S is successively drawn out and continuously formed into a coil.

  That is, when the motor 9 is rotated after setting, the rotation is via the pulley 10, the first transmission belt 11, and the pulley 7 (these constitute a first transmission device that transmits rotation to the fryer). , The flyer 5 rotates, the reel 3 rotates in conjunction with the friction plate 4 (respectively rotates in the direction indicated by the arrow in FIG. 2), and the filament S is fed out to form the cored bar. 6 is wound around the winding start end round portion 16, is gripped in the radial direction by the gripping bodies 32 and 33 of the gripping tool 27, and is gradually pushed out toward the tip end side of the winding core portion 14. When it is out of the range, it springs back and becomes a coil C as a product.

  During coil forming, the gripping tool 27 grips the wire S that is wound around the winding core portion and pushed out from both sides of the coil radial direction and is slid in the core metal axis direction.

The core 6 rotates together with the shaft 2 by the amount of spring back in the direction opposite to the flyer 5. That is, the rotation of the motor 9 is transmitted to the pulley 43 on the input side of the continuously variable transmission 46 via the pulley 10 and the first transmission belt 11 and is set via a transmission mechanism (not shown) inside the continuously variable transmission 46. The gear 44 on the output side rotates in the same direction as the pulley 43 on the input side at the selected gear ratio, and the gear 19 at the rear portion of the shaft 2 that meshes with the gear 44 of the continuously variable transmission 46 rotates (the direction indicated by the arrow in FIG. 2). rotate respectively.), rotates in a direction opposite to the shaft 2 flyer 5, the core metal 6 integrally with the shaft 2 is rotated (through the continuously variable transmission 46 from the motor 9 reaches the core metal 6 transfer The system constitutes a second transmission device together with a transmission system that reaches the gripping tool 27 described later.) Then, the rotation speed is adjusted to a speed at which the amount of springback of the wound wire rod S is wound by operating the lever 45.

  The rotation of the shaft 2 is transmitted to the transmission shaft 25 via the pulley 20, the second transmission belt 39, and the pulley 38, and the pulley 41, the third transmission belt 42, and the pulley 37 are transmitted from the transmission shaft 25 to the transmission shaft 25. To the gripping tool 27, and the gripping tool 27 rotates at the same speed in the same direction as the cored bar 6 (the transmission system from the shaft 2 to the gripping tool 27 passes from the motor 9 via the continuously variable transmission 46. The second transmission device is configured together with the transmission system that reaches the core shaft 6).

  In this way, the gripping tool 27 and the cored bar 6 rotate at a predetermined speed in the direction opposite to the rotation of the fryer 5, and the linear body S fed out by the fryer 5 and wound around the cored bar 6 is wound by the amount of the spring back. The coil C that is a product is pushed out without rotating (and of course not revolving).

  Further, the metal fitting 17 and the die metal fitting 18 as pitch adjusting jigs are connected to the fryer 5 and rotate integrally with the fryer 5 so that the metal fitting 17 is moved with respect to the wire body S from the inner side in the core metal axis direction. The striated body S is pressed and pressed, and the striated body S is guided in a direction perpendicular to the axial direction of the core bar toward the winding start end round part 16 of the core bar 6 by a die-shaped metal fitting. . Thereby, the pitch of the coil C after the spring back is stabilized. Moreover, the pitch of the coil C as a product can be adjusted by adjusting the degree of brazing by the metal fitting 17.

  This coil forming apparatus can be used for forming a coil for a spring, a coil for a flexible tube, and the like in addition to a tire reinforcing coil.

  Although an example of the embodiment has been described above, the present invention is not limited to this, and it is needless to say that the aspect may be changed as appropriate, and a tire reinforcing coil, a spring coil, a flexible tube coil, etc. It can be applied to various coil molding.

It is front sectional drawing of the coil shaping | molding apparatus of embodiment. It is a right view of the coil shaping | molding apparatus of FIG. It is the principal part enlarged view seen in the partial cross section from the left side surface of the coil shaping | molding apparatus of FIG. It is a principal part enlarged view of FIG.

Explanation of symbols

2 Shaft 3 Reel 5 Flyer 6 Core 7, 10, 20, 37, 38, 41, 43 Pulley 9 Motor 11 First transmission belt 16 Winding start end round part 17 Brace 18 Dice-shaped bracket 19, 44 Gear 25 For transmission Shaft 27 gripper 29 support body 30, 31 support hole 32, 33 grip body 34, 35 spring 39 second transmission belt 42 third transmission belt 45 lever 46 continuously variable transmission S linear body C coil

Claims (4)

The wire wound around the reel on the shaft is drawn out by a rotating fryer and wound around a cored bar in a coil shape via a pitch adjusting jig, and the wound wire is wound from the rounded end of the cored bar to the cored bar. Clamping the gripping tool and the cored bar in a direction opposite to the rotation of the fryer while holding the gripping tool sandwiched from the coil radial direction at a position outside the axial direction so that the coil after the springback does not rotate. It is rotated at a speed adjusted by the operation of the machine looking write winding striatum on the core metal successively extruded while sliding to the core axial direction toward the winding core tip side of the core metal, the gripper A coil forming method, characterized in that a coil is formed by removing a stress by causing a spring back when it is separated from the coil . The wire wound around the reel on the shaft is fed out by a rotating flyer, and the corner portion between the flange portion and the winding core portion is a winding start end round portion that becomes the winding end end winding portion . A winding mechanism that winds around a metal core via a pitch adjusting jig, and a coil that is wound around the metal core by the winding mechanism is coiled by a gripper at a position outside the core metal winding axial direction from the winding start end round part of the metal core. while gripping across the radial direction, said gripper and the metal core in a direction opposite to the rotation of the flyer is rotated at a speed coil after springback was adjusted by the operation of the continuously variable transmission so that stops rotation The wire rod is wound on the mandrel, and is sequentially pushed out while sliding in the mandrel axial direction toward the tip of the core of the mandrel, and is removed from the gripping tool. In coil forming apparatus characterized by being configured with a winding mechanism and a coil obtained by removing the stress to cause a spring-back. The shaft is rotatably supported, the cored bar is disposed on an axial extension of the shaft, the shaft, a reel that rotates around the shaft, a flyer that rotates in conjunction with the reel, The winding mechanism is configured by the first transmission device that transmits the rotation to the fryer, the pitch adjusting jig, and the cored bar,
The entrainment mechanism includes the gripping tool and a second transmission device that transmits rotation adjusted to a speed at which the coil after the springback does not rotate in a direction opposite to the rotation of the fryer to the gripping tool and the cored bar. The coil forming apparatus according to claim 2, wherein: A brace that is connected to the flyer and rotates around the core bar and is pressed from the inner side in the axial direction of the core bar against the linear body fed out through the fryer, The pitch adjusting jig is composed of a die-shaped metal fitting that guides the brazed wire body in a direction orthogonal to a core metal axis direction toward a winding start end round portion of the core metal. Item 4. The coil forming apparatus according to Item 3.

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