JP3096699U - Cord feeding device for belt forming - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress inertial rotation of a bobbin at the end of spinning in belt forming, prevent a kink from being generated while keeping a core wire tension constant, and smoothly pull out a core wire. A wire feeding device is provided. SOLUTION: A belt forming cord feeding device 1 brakes a bobbin 3 around which a cord Cd is wound, a rotary shaft 5 fitted along a shaft hole of the bobbin 3, and a rotation of the bobbin. The rotation braking means 7 includes a detection means 16 for detecting the end of spinning and a detection signal output from the detection means 16 based on an input of a detection signal.
A control unit for outputting a connection signal; a connection unit for connecting the rotating shaft to the non-contact type braking unit based on the connection signal output from the control unit; And non-contact type braking means 12 for applying a braking force for stopping the braking force.

Description

[Detailed description of the invention]       [0001]     [Technical field to which the invention belongs]   The present invention relates to an apparatus for feeding a core wire for forming a belt. Feeding device for belt forming core wire to send out with constant tension from bobbin to core wire About the installation.       [0002]     [Prior art]   A general method for manufacturing a power transmission belt such as a V-belt or a V-ribbed belt is a cylindrical belt. After wrapping a canvas or rubber sheet around the peripheral surface of the molding die, spirally wrap the core wire over it. After spinning and further wrapping a rubber sheet to obtain a laminate, this is cross-linked and Get leave. Then, the surface of the obtained cross-linked sleeve is ground according to the belt configuration. , Polishing, etc., and cutting into a predetermined width to finish each transmission belt.       [0003]   In the above spinning process, a core wire is sent out from a bobbin to form a belt molding die. Is wound around (spinning), but the bobbin stops immediately at the end of spinning. Instead, it could rotate by inertia. Since the surplus core is sent out by the inertial rotation, The core wire becomes slack and causes kink. With kink, the core wire is twisted locally, A state in which the twist is disturbed, and the physical properties and the like of the core wire in which the kink is generated are deteriorated. So Here, a braking force is applied to the bobbin to suppress the inertial rotation, and a constant tension is applied to the core wire. Proposals have been made to prevent kink.       [0004]   For example, as shown in FIG. 3, the bobbin 117 is set in a horizontal direction, 17 is fixed and integrated with a rotating shaft 147 supported by a bearing 149, and a belt 138 is provided. And the rotation shaft 1 by a braking means such as a powder brake 103 via a pulley 144. There is a cord feeding device that controls the rotational force of 47 core wires. (Japanese Patent Laid-Open No. 2000-16700 Here, the powder brake 103 used as a braking means is a brake. The key member and the brake body are arranged on the concentric cylinder so that a space is provided. Energizes the coil disposed on the brake body with the conductive powder interposed Magnetic powder is linked in a chain by the generated magnetic flux, and it rotates by the coupling force. This is to generate a brake. According to this core wire feeding device, the rotating shaft 14 7, a constant torque is applied, and therefore the bobbin 11 integrated with the rotating shaft 147 7 is also constant, and the tension of the core wire 115 can be kept constant. It is possible.       [0005]   [Problems to be solved by the invention]   However, in this device, the braking force is applied to the bobbin 117 unbearably. At the start of spinning, that is, when the core wire is pulled out, Load was applied and there was a risk of disconnection. Also the core of bobbin 117 There is also a problem that the tension applied to the core wire 115 changes due to a change in the winding diameter. Was. Further, the powder brake 103 has a structure in which the brake member / brake body is made of a magnetic powder. Due to rotational sliding contact with the powder, the connection generates brake heat and cools it. Mechanism is required. In addition, magnetic powder and the like are worn over time due to this rotational sliding contact. Wear out, requiring maintenance such as replacement of magnetic powder. There is also a title.   The present inventor conducted intensive research in view of these points, and as a result, at the end of spinning. Apply proper braking force to the bins to stop and minimize coasting as much as possible A bell that prevents the kink of the core wire and allows the core wire to be pulled out smoothly. The present invention provides a core feeding device for molding.       [0006]     [Means for solving the problem]   In order to achieve the above object, according to the first aspect, a core wire is spun into a belt molding die. This is a belt forming core wire feeding device used when the core wire is wound. A bin and a rotating shaft that is fitted along the shaft hole of the bobbin and that can rotate integrally therewith, Rotating braking means for applying a braking force to the rotating shaft at the end of spinning, The braking means includes a detecting means for detecting the end of spinning, and a detecting means output from the detecting means. A control unit that outputs a connection signal based on the input of the output signal, and a control unit that outputs the connection signal based on the connection signal of the control unit. Connecting means for connecting the rotating shaft and the non-contact type braking means; And a non-contact type braking means for applying a braking force to stop rotation. Sign.       [0007]   According to claim 1, a braking force is applied to the bobbin at the end of spinning. So that the core wire is not suddenly loaded when the core wire is pulled out as in the past, The inertial rotation of the bobbin can be suppressed, and kink and disconnection can be prevented. Also braking Since non-contact type braking means is used as the means, the tension applied to the It can be controlled constantly without changing over time, and it is durable with no abrasion of the connecting part Excellent in nature. In addition, there is no heat generation at the connection part and no cooling mechanism is required. There is also.       [0008]   [Embodiment of the invention]   Hereinafter, embodiments of the present invention will be described.   FIG. 1 is a schematic diagram of a belt forming equipment using the belt forming cord feeding device of the present invention. FIG. 2 is a conceptual diagram showing an embodiment, and FIG. 2 is a diagram showing one embodiment of a belt forming cord feeding device of the present invention. FIG. 3 is an enlarged sectional view of a portion. Note that these are only embodiments and are not limited to these. Not something.       [0009]   The belt molding equipment includes a belt molding die 64 and a belt molding die 64 installed vertically. A metal for rotating a main body 62 to be tightened and a cylindrical belt forming die 64 around its axis. A core wire Cd is spirally wound around the mold rotating means 66 and the belt forming mold 64. It comprises a pinning device 60. The belt molding die 64 has a main body bearing 72 at its axis. The main body 6 is connected so that the mold rotating shaft 63 supported by the 2 is installed. On its surface, the belt components such as canvas and rubber sheet are wrapped. The core wire Cd is spirally spun on it, and further, according to the belt type. Then, a rubber sheet or the like is wound to form a cylindrical unvulcanized belt molded body.       [0010]   The spinning device 60 is a belt forming cord feeding device 1 for sending a cord Cd. Core wire tension means 69 for keeping the tension of the sent core wire Cd constant; The core wire Cd is positioned so that the core wire Cd is spirally wound around the belt forming die 64. A core alignment means 67 for determining and guiding is provided.       [0011]   The core wire tension means 69 is provided from the bobbin 3 via the core wire alignment means 67 to the belt forming die 6. 4 to give an appropriate tension to the core wire Cd guided by the A pulley 86 and a tension device 88 are provided. As shown in FIG. A pulley having a swing function as shown in FIG. When the core wire Cd guided by the bridge 86 is lower than a predetermined tension, the head is swung. Swing the head in the direction in which tension is applied by the built-in spring force of the pulley. When higher, shake the head in the direction of decreasing the tension to keep the tension of the core wire Cd constant. It is configured.       [0012]   The cord aligning means 67 includes a support 82 mounted on the main body 62 and a belt forming mold 64. A ball screw 80 pivotally supported by a column 82 so as to be parallel to the axis of The belt is formed by the rotation of the servo motor 84 for rotating the screw and the rotation of the ball screw 80. From one end (above the belt molding die) to the other end (below the belt molding die) of the molding die 64 ), And a core wire C attached to the pulley support member 78. and a touch pulley 76 for positioning and guiding d.       [0013]   Next, in the belt forming cord feeding device 1 according to the present invention, the cord Cd is wound. And a rotating shaft 5 inserted along a shaft hole of the bobbin 3. . The bobbin 3 and the rotating shaft 5 are fixed by a lock nut, a detent pin, or the like. It is configured to be physically rotatable. Aramid fiber, Glass fiber, polyester fiber, nylon fiber, steel, stainless steel, etc. A material that has been subjected to an adhesive treatment as necessary is used.       [0014]   Further, the belt forming delivery device 1 is provided with a rotation braking means for braking the rotation of the bobbin. The rotation braking means 7 includes a detection means 1 for detecting the end of spinning. 6 and a connected signal is output based on the input of the detection signal output from the detection means 16. Based on a connection signal output from the control unit 18 (built in the controller). Connecting means 14 for connecting the rotating shaft 5 to the non-contact type braking means 12; 5, a non-contact type braking means 12 for applying a braking force to stop rotation when connected to I can.       [0015]   The spinning end detecting means 16 is a sensor for detecting the belt forming die 64 using a sensor. It detects the end of spinning, and in the present embodiment, as a sensor A non-contact proximity sensor that senses metal is used. And formed of metal When the pulley support member 78 reaches the spinning end position, that is, the position A, The non-contact type proximity sensor located at It is configured to output a signal to the control unit 18. In addition, as the detection means 16, Not only the above-mentioned means but also a type of light detection as a non-contact type proximity sensor However, even if a contact type that detects with a limit switch is used, good. However, considering accuracy and durability, using a non-contact type proximity sensor Is desirable. Further, the core wire may be started to be wound from below the belt forming mold 64, In this case, the spinning end position is the upper end of the belt forming die 64.       [0016]   The connection means 14 is connected to the rotating shaft 5 based on the connection signal output from the control unit 18. This is a means for controlling connection or opening of the non-contact type braking means 12, and in this embodiment, A power supply unit (not shown) for applying electric power based on the connection signal, and taking out the bobbin 3 of the rotating shaft 5 It comprises an electromagnetic clutch 15 attached to the opposite side of the spout. Power supply unit is control unit If the control signal is incorporated in the controller together with 18, the concatenated signal is converted into an added power in the controller. Is output to the electromagnetic clutch 15. The electromagnetic clutch 15 is connected to a field rotor unit. The armature is attached to the rotating shaft 5a, and the armature portion is b. Then, based on the connection signal from the control unit 18, the coil 2 8, a magnetic flux is generated between the rotor 31 and the armature 33, and the armature The clutch 33 is connected to the clutch by being sucked by the rotor 31. Ma When the energization of the coil 28 is stopped, the armature 33 is disconnected from the rotor 31. And the clutch is released. In addition, as shown in FIG. When the means 12 is provided on the side opposite to the take-out opening of the bobbin 3, each time the bobbin 3 is replaced, Since the electromagnetic clutch 15 and the non-contact type braking means 12 do not need to be moved, The bottle 3 can be replaced.       [0017]   The non-contact type braking means 12 is an air gap type, which completely and non-contactly transmits torque via magnetism. Refers to the hysteresis type brake that transmits the information. This non-contact type braking means 12 With a non-contact structure, there is no wear of the connecting part, long life, high repetition performance, The feature is that a constant torque can be obtained. Specific as the non-contact type braking means 12 Include Permatork manufactured by Koshin Seikosho Co., Ltd. Non-contact type system of this embodiment The moving means 12 is an example using this perm torque, and is not connected via a shaft coupling 48. The shaft 5b connected to the tactile braking means 12 is connected to the rotating shaft 5a by the connecting means 14. The rotation braking is performed.       [0018]   The permanent torque is, for example, a plurality of sector-shaped permanent magnets, in which the N pole and the S pole alternate. And a pair of permanent magnet plates 23a and 23b A disk-shaped hysteresis plate 24 coaxially disposed between magnet plates, One of the magnet plates 23a and 23b or the hysteresis plate 24 is fixed and the other is fixed. When the one is rotated, the pair of permanent magnet plates 23a and 23b face each other with the same polarity. Can be rotated with low torque when they are arranged so that the opposite poles face each other. When it is placed, it can rotate with high torque.       [0019]   Next, the operation of the above-described means and apparatus in the spinning process will be described. Is First, the connecting means 14 is opened, and the end of the core wire d is attached to the upper end of the belt forming mold 64. Lock. Then, the drive unit 74 attached to the main body 62 is operated to rotate the mold. The belt forming mold 64 is rotated in the circumferential direction via the shaft 63. At this time, bobbin 3 The core wire Cd sent out from the belt forming die 64 via the touch pulley 76. And winding around the belt forming mold 64 is started. Belt forming gold A pulley support member on which the mold 64 is rotated at a predetermined rotation speed and the touch pulley 76 is mounted. 78 is moved downward at a predetermined speed, and the core wire Cd is spirally wound at a predetermined pitch. When the pulley support member 78 reaches the spinning end position A, the detecting means 16 detects The control unit 18 promptly connects the connecting means 14 to the non-contact type braking means 12. The bobbin 3 is given a braking force.       [0020]   [Effect of the invention]   As described above, in the present invention, it is possible to apply a braking force to the bobbin at the end of spinning. So that the core wire is not suddenly loaded when the core wire is pulled out. Can be suppressed, so that kink and disconnection can be prevented. Also Since the non-contact type braking means is used as the braking means, the tension applied to the striatum Can be controlled without changing over time, and there is no It has the effect of being excellent in durability.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a conceptual diagram showing an embodiment of a belt forming facility using the belt forming cord feeding device of the present invention. FIG. 2 is an enlarged cross-sectional view of a part of the core forming device for forming a belt according to the present invention; FIG. 3 is an external perspective view of a conventional belt forming cord feeding device. [Description of Signs] 1 Belt forming core wire feeding device 3 Bobbin 5 Rotary shaft 7 Rotary braking means 12 Non-contact type braking means 14 Connecting means 16 Detecting means 18 Control unit Cd Core wire

Claims (1)

Claims 1. A utility model registration claim 1. A belt forming cord feeding device used for spinning a cord into a belt molding die, comprising: a bobbin around which a cord is wound; A rotating shaft that can be inserted and rotated integrally with the rotating shaft, and a rotating braking unit that applies a braking force to the rotating shaft at the end of spinning, wherein the rotating braking unit includes a detecting unit that detects the end of spinning, A control unit that outputs a connection signal based on the input of the detection signal output from the detection unit; a connection unit that connects the rotation shaft and the non-contact type braking unit based on the connection signal of the control unit; A non-contact type braking device for applying a braking force for stopping rotation when connected, the belt forming core wire feeding device, comprising: