JPH0519258U - Covered wire feeding device - Google Patents

Abstract

(57) [Summary] [Purpose] Before the secondary processing of the coated electric wire freely wound into a coil in the next step, the peculiarities and curl of the coated electric wire are corrected to enable smooth supply of the coated electric wire. To provide a device. [Structure] A placing tray 12 on which a covered electric wire W freely wound in a coil shape is placed and which is driven by a motor M to rotate.
And a support pole 23 that rises upward from the center of the loading tray 12, and a plurality of regulating rods 18 that hang downward from a support 17 provided on the support pole 23.
In addition, the rotation body 32 that detects the movement of the covered electric wire W by converting the movement of the covered electric wire W in the linear direction into the displacement in the rotation direction.
Also, a delivery detection sensor 37 is provided.

Description

[Detailed description of the device]

[0001]

[The purpose of the device] [Industrial applications]

 The present invention is intended for a coated electric wire that is freely wound in a coil shape, and when secondary processing of such a coated electric wire is performed in the next process, the habit and the curl of the coated electric wire are corrected and a smooth covered electric wire is supplied. The present invention relates to a covered electric wire feeding device.

[0002]

[Background of the invention]

 Generally, when a coated wire is secondarily processed to manufacture, for example, a single-sized wire harness with terminals, the untreated material is a coil that is freely wound, and then it is sequentially fed out. While processing. At this time, the covered electric wire has a winding tendency from the beginning, and as shown in the skeleton of FIG. 7, the covered electric wire W freely wound into a coil is placed on the floor while the covered electric wire W is placed above. In the case of pulling out, the coated electric wire W has a more peculiarity each time it is drawn out once, and this is a big problem in the secondary processing in the next step together with the curl at the beginning of the supply.

In the winter, the covered electric wire W becomes cold and becomes particularly entangled, so that a heater is provided so that the covered electric wire W is loosened. However, since the heat of the heater is concentrated at one place. , There was unevenness in the way of loosening. Although it is conceivable to provide a large number of heaters as a method for eliminating such unevenness, this will increase the product cost and is difficult to use.

Therefore, the present applicant has already reached the application of Japanese Patent Application No. 2-129243 “Coating Wire Feeding Device”, in which the coated wire freely wound in a coil shape is fed while rotating. We are trying to solve the problem. However, in this application, a contact-type start switch is used as a means for issuing a start command to the motor in accordance with the processing status of the electric wire processing device, which is the next step, and the start switch is a covered electric wire to be fed. Since it is operated by directly abutting it, it is not always sufficient when more precision is required for the operation, and there is a problem that the start switch and the covered electric wire are also burdened. Was there.

[0005] In addition, if a so-called "knot" occurs in the covered electric wire that is fed out, it may hinder the feeding and cause a wire breakage or a secondary processing failure in the electric wire processing device that is the next process, It was also necessary to take some measures to immediately stop all operations when an abnormality occurred in the covered electric wire.

[0006]

[Technical Items Attempted to Solve]

 The present invention has been made in view of such a background, and it is premised on using a covered electric wire which is freely wound in a coil shape as it is, and the winding habit of the covered electric wire is corrected so as not to cause a habit. This is an attempt to develop a new device for feeding a covered electric wire that smoothly feeds the covered electric wire.

[0007]

[Device configuration] [Means for achieving the purpose]

 The first invention of the apparatus for feeding the covered electric wire according to the present invention is an apparatus for feeding the covered electric wire or stopping the feeding appropriately according to the processing condition of the electric wire processing apparatus which is the next step, and the apparatus is freely wound in a coil shape. The covered electric wire is placed, and the reducer unit receives the drive of the motor and is rotated at a predetermined speed by the reducer unit, and is raised up from the rotation center of this place tray and rotates with the place tray. It has a support pole and a control rod which is fixed at one end to a support body provided at the tip of the support pole and has the other end hanging down in a parabolic shape with the other end free, and above the support body. Converts the linear movement of the covered wire into the rotation of the detection plate, detects the movement of the covered wire by this, and commands the motor to pay out a predetermined amount of the covered wire. Those made as characterized in that the provided.

Further, in addition to the above requirements, the second invention of the covered wire feeding device according to the present invention is such that the rotating body is formed by forming flanges at both ends of a cylindrical base portion, and one of the flanges is A plurality of detection holes are continuously provided at regular intervals, and this is used as a detection plate.A pressure contact roller contacts the outer peripheral surface of the base, and the covered wire is passed between the base and the pressure contact roller. By this, the linear movement of the covered wire is converted into rotation of the detection plate.

Further, in addition to the above-mentioned requirements, the third invention of the device for feeding a covered electric wire according to the present invention has a guide hole formed below the rotating body to be slightly larger than the wire diameter of the covered electric wire. A wire rod guide is provided, and this wire rod guide is provided at one end of the rotating arm, and an operation stop switch is provided in the vicinity of the other end of the rotating arm to contact the end of the rotating arm. The operation stop switch is operated by contacting the contact portion, and the above-mentioned objects are achieved by each of these means.

[0010]

[Function of the device]

 In the present invention, the loading tray is driven by the motor to rotate in the same direction as the winding direction of the covered electric wire, so that the peculiarity does not occur when the covered electric wire is unwound. In addition, a force acts on the covered electric wire in the direction opposite to the direction in which the curl occurs, that is, in the direction in which the curl is corrected. Further, the linear movement amount of the covered electric wire that is further fed out appears as the rotation amount of the detection plate.

Further, the rotating body is rotated by a frictional force generated by sandwiching the covered electric wire with the pressure contact roller, and the detection plate constituting one flange of the rotating body informs the feeding detection sensor of the movement of the covered electric wire. , Instruct the sensor to switch ON-OFF.

Further, when the wire rod guide is provided below the rotating body, when the "knot" portion is entangled and reaches the guide hole of the wire rod guide, the passage is blocked, so that the wire rod guide is moved upward. When the arm is moved, the rotating arm is rotated, and the contact portion at the other end contacts the operation stop switch.

[0013]

【Example】

 Hereinafter, the covered wire feeding device of the present invention will be specifically described with reference to the drawings. In the description, the structure of the covered wire feeding device will be described first, and then the operating state thereof will be described. The reference numeral 1 in the figure is a device for feeding a covered wire according to the present invention. This device is, for example, a terminal crimping machine or a plurality of terminals for manufacturing a wire harness with a terminal by processing a covered wire. The present invention can be applied to supply the covered electric wire W to the electric wire processing device 2 that performs various secondary processing, such as a device for processing each end of the covered electric wire and wiring it to another member such as an electronic substrate. In the present application, a terminal crimping machine is used as the electric wire processing device 2, and a wire feeding unit 3 for assisting the feeding of the covered electric wire W is further arranged in the preceding stage. The covered wire W is supplied.

Such a covered electric wire feeding device 1 has an operation box 5 at the bottom first, and a placing tray 12 on which the covered electric wire W is placed above the operation box 5, and the placing tray 12. A support pole 16 extending upward from the center and a plurality of control rods 18 which are fixed at one end to a supporting body 17 provided at the tip of the support pole and hang downwardly in a parabolic shape with the other end free. Have a supporting system consisting of Then, the support rod 22 is erected upward from the upper surface of the operation box 5, and the ring stay 28 and the rotating body 32 are provided for the support plate 23 located at the tip of the support rod 22 to guide the uncovered covered wire W. And a pressing roller 39, which is also provided on the support plate 23 to detect the movement of the covered electric wire due to the feeding, and a detection plate 34a and a feeding detection sensor 37 which form a part of the rotating body 32. And a detection system consisting of. Further, similarly, when an abnormality such as entanglement occurs in the covered wire W with respect to the support plate 23, not only the operation of the covered wire feeding device 1 of the present invention but also the operation of the wire processing device 2 and the wire feeding unit 3 are stopped. The operation stop switch 51 and the covered electric wire W that is fed out are provided with a heater 54 and the like that warms the wound electric wire W and prevents the electric wire W from being entangled.

Among them, the operation box 5 has a flat box-shaped casing in which a motor M, a speed reducer unit 6 and a timing belt 7 connecting them are arranged, and a front operation panel 8 is provided with a motor M. Various operating switches 9 such as a switch for driving and switching between forward and reverse rotations and a switch for operating the heater 54 are provided, and further four casters are provided on the bottom surface.

As the speed reducer unit 6, it is preferable to use one that reduces the rotation transmitted from the motor M by about 30%, and it is preferable to use one with a speed controller as the motor M. If the attached tray is used, the number of rotations of the mounting tray 12 can be controlled more finely, and the feeding amount of the covered electric wire W can be easily adjusted. Further, since it is necessary to rotate the mounting tray 12 in the opposite direction depending on the winding direction of the covered electric wire W or the mounting state, the motor M that can be rotated forward and backward is used.

The output shaft 6a of the speed reducer unit 6 projects from the top plate 10 of the operation box 5 thus configured, and a mounting tray 12 and a support pole described below are provided with respect to the output shaft 6a. A support system composed of 16 and a control rod 18 is attached. The loading tray 12 is a portion on which the covered electric wire W freely wound in a coil shape is directly placed, and the edge 12a rising upward from the peripheral end and a plurality of guide slits 13 radially. It is a substantially disk-shaped member having a bottom portion 12b formed by forming. The guide slit 13 has a notch length in the radial direction set so as to correspond to the change in the winding diameter of the covered electric wire W, and the width dimension of the guide slit 13 does not hinder the movement of the regulating rod 18 so as to prevent the movement of the regulating rod 18. It is formed slightly larger than the diameter. Incidentally, as shown in FIG. 6, the bottom portion 12b may be provided with an opening 14 in consideration of the convenience of placing and taking out the covered electric wire W.

The support pole 16 that passes through the center of the mounting tray 12 and is connected upward from the output shaft 6 a of the speed reducer unit 6 includes a support body 17 provided at the upper end of the support pole 16 and the support body 17. It is a relay member that rotates the regulating rod 18 whose one end is fixed together with the mounting tray 12, and the support body 17 is a slightly thick disk-shaped member. A plurality of control rods 18 draw a parabola and hang downward while curving somewhat.

The restricting rod 18 is preferably made of a material having a high elasticity such as a piano wire or spring steel, and its elasticity gives the free end side a tendency to expand outward. The number of the control rods 18 corresponds to the number of the guide slits 13 formed on the placing tray 12, and the free ends of the control rods 18 are fitted into the guide slits 13.

An eave-shaped protruding portion 19 having an inverted truncated cone shape having a tapered surface 20 on the side peripheral portion is provided above the support body 17. The eave-shaped overhanging portion 19 prevents the covered electric wire W from coming into contact with the regulating rod 18 while being fed, and the diameter of the upper surface thereof is set to be slightly larger than the diameter of the support 18. Then, from the operation box 5, a support rod 22 is further raised upward. A round bar is used as an example of the support rod 22, and a support plate 23 made of flat steel is rotatably held by a base holder 24 on the upper portion of the support rod 22 and fixed by a clamp lever 25.

The support plate 23 is provided with members such as a ring stay 28, a rotating body 32, and a pressure contact roller 39 as a guide system for guiding the uncovered electric wire W. Of these, the ring stay 28 is, for example, a round bar with a wire diameter of about 5 mm, and one end thereof is formed into an annular shape with a diameter of about 90 to 100 mm, which is used as a guide ring 30 and the remaining portion is appropriately formed. It is bent at the position of and is used as the ring arm 29. When attaching the ring stay 28 thus configured to the support plate 23, a part of the ring arm 29 is inserted into the arm holder 27 provided on the support plate 23, and the height position of the guide ring 30 is determined. It is fixed with screws.

The rotary body 32 has a cylindrical base portion 33 and flanges 34 formed at both ends thereof so as to have a shape imitating a bobbin for a sewing machine. One of the flanges 34 is A plurality of detection holes 35 are continuously provided at regular intervals in the circumferential direction and serve as detection plates 34a. The detection plate 34a constitutes a detection system together with a feeding detection sensor 37, which will be described later, and is fitted to a shaft 32a protruding from the support plate 23 with respect to the support plate 23 and is supported in a free rotation state. Be done.

The pressure contact roller 39 is supported in a free rotation state with respect to a rotating rod 41 which can also rotate about a pin 40 protruding from the support plate 23 as a fulcrum. A spring mounting rod 42 is provided at an end opposite to the spring mounting rod 42, and a pressure contact spring 44 is stretched between the spring mounting rod 42 and a spring locking portion 43 provided at an end of the support plate 23. The pressure roller 39 is always urged so as to contact the outer peripheral surface of the base portion 33 of the rotating body 32.

In addition to the guide system thus configured, the support plate 23 is provided with a detection system mainly including the feed-out detection sensor 37 and an operation stopping means that operates when there is an abnormality in the covered electric wire W. .. Among them, as the detection system, the feeding detection sensor 37 of the type that detects the movement of the covered electric wire W by detecting the presence or absence of the detection hole 35 provided in the detection plate 34a described above can be applied. As an example, we use a non-contact sensor with a U-shaped cross section that has a light emitting part and a light receiving part in one package.

As the operation stopping means, a wire rod guide formed by engraving a guide hole 46 formed in a diameter slightly larger than the covered wire W below the contact portion between the rotating body 32 and the pressure roller 39. 47 is arranged, a male screw is formed on a mounting rod 48 integrally formed with the wire rod guide 47, and a male arm of the rotary arm 49 which pivots about a rotary shaft 50 provided on the support plate 23 as a fulcrum. It is screwed into a female screw portion engraved on one end, and the other end of the rotating arm 49 is set as an abutting portion 49a with the rotating shaft 50 interposed therebetween, and an operation stop switch 51 is provided below it. The support spring 52 is provided, and the other end of the support spring 52, which is supported by fixing one end to the support plate 23, is attached between the rotary shaft 50 and the attachment rod 48. Accordingly, the elasticity of the support spring 52 normally causes the tip of the rotating arm 49 to be displaced downward, that is, the contact portion 49a does not act on the operation stop switch 51.

A heater 54 is further provided on the top plate 10 of the operation box 5, and the heater 54 is composed of a support rod 55 capable of holding a bendable shape and a heater main body 56. The main body 56 uses a so-called beam bulb as an example.

Next, the operating state of the covered wire feeding device 1 of the present invention will be described. (I) Installation of the covered electric wire When the operator puts the covered electric wire W freely wound in a coil shape on the placing tray 12, loosens the fixing screw screwed to the arm holder 27 and attaches the ring stay 28. Shake it to a position where it does not interfere with the installation of the covered electric wire W. Thereafter, the covered electric wire W is placed on the placing tray 12 so that the eave-shaped overhanging portion 19 is hidden. In this state, the covered electric wire W receives the force from the inner side to spread outward by the regulating rod 18, and is kept and held in an annular shape. Then, the ring stay 28 is returned to the original position, that is, the position of the center of the guide ring 30 coincides with the axis of the support pole 16, the height position is set, and the fixing screw that is screwed into the arm holder 27 is tightened and fixed. To do. Then, one end of the covered electric wire W is pulled out, passed through the inside of the guide ring 30, further passed through the guide hole 46 in the wire rod guide 47 located thereabove, and further passed between the rotating body 32 and the pressure contact roller 39, which is the next step. The electric wire feeding unit 3 and the electric wire processing device 2 are reached.

(Ii) Feeding out of the coated electric wire and rotation of the mounting plate The coated electric wire W thus installed is pulled out by being pulled by the electric wire processing device 2. In this case, since the covered electric wires W are bundled in a coil shape, the locus of the covered electric wire W largely draws a spiral in the course of feeding. However, after reaching the wire rod guide 47, the locus is regulated by the guide hole 46 and moves linearly. Further, when passing between the rotating body 32 and the pressure contact roller 39, it is rotated by the frictional force. Rotation is given to the rolling element 32, and the rotation detection sensor 37 detects this rotation, and the information is sent to the motor M as an electric signal, and the motor M rotates for a predetermined charging time. In response to this, the mounting tray 12 also rotates while being decelerated by the speed reducer unit 6 for the charging time.

Incidentally, in the state in which the loading tray 12 is rotating in this way, the feeding locus of the covered electric wire W is determined in relation to the amount of pulling by the electric wire processing device 2, and the two are balanced. Then, the covered electric wire W is extended substantially linearly upward. The above-mentioned operation is repeated thereafter, and the covered electric wire W is fed out. The guide ring 30 serves to prevent the covered electric wire W from being bent outwardly more than necessary, and the eave-shaped overhanging portion 19 conversely bends the covered electric wire W inward. The function of preventing contact with the control rod 18 is provided.

(Iii) Heating of the covered electric wire Further, when the covered electric wire W is unreeled while rotating in this manner, the covered electric wire W is rotated by being irradiated by the heater 23 located on the side of the mounting tray 12. The covered electric wire W is evenly applied and the whole covered electric wire W is uniformly heated.

(Iv) Treatment when Abnormality Occurs in Coated Electric Wire When some foreign matter adheres to the covered electric wire W or a so-called “knot” is generated due to entanglement, the wire diameter is substantially thickened. When the thickened portion reaches the wire guide 47, it cannot pass through the guide hole 46 and pushes the wire guide 47 upward. As a result, the rotating arm 49 rotates, the contact portion 49a at the other end stops operating, and the switch 51 is pressed to add the covered wire feeding device 1 of the present invention to the wire processing device 2 and wire feeding unit 3 in the next step. Stop all operations.

[0032]

[Effect of the device]

 The covered wire feeding device 1 of the present invention has the above-described structure and exhibits the following effects. That is, in the present invention, since the mounting tray 12 can be rotated, the winding habit of the covered electric wire W which is generated by being freely wound in a coil shape and delivered is removed, and the habit does not occur. .. Further, the heat of the heater 54 acts on the entire covered electric wire W, which helps to remove the curl and smoothes the processing of the electric wire processing apparatus 2 in the next step. Further, since the amount of movement of the covered electric wire W in the straight line direction is represented by the amount of rotation of the detection plate 34a by providing the rotating body 32, the rotation of the detection plate 34a is detected to ensure the stability and stability. It is possible to feed out the covered electric wire W with excellent performance.

Further, if the structure of the rotating body 32 is formed by forming flanges 34 at both ends of a cylindrical base portion 33 and forming a plurality of detection holes 35 in one of the flanges 34, the base portion is formed. The movement of the covered electric wire W in the linear direction can be taken out as the rotation of the rotator 32 by merely contacting the pressure contact roller 39 with 33 and passing the covered electric wire W therebetween, and the covered electric wire W is not damaged and is simple. The structure can detect the movement of the covered electric wire W.

Further, when the operation stopping means composed of the wire rod guide 47 and the operation stop switch 51 etc. is provided, even if a entanglement occurs in the covered electric wire W and a so-called “knot” or the like occurs, various devices in the next step Since all the operations of these peripheral devices are stopped before reaching the stage, it is possible to avoid defective products and damage to the device during the secondary processing.

[Brief description of drawings]

FIG. 1 is a front view showing a usage state of a covered wire feeding device of the present invention.

FIG. 2 is a perspective view showing a device for feeding a covered electric wire according to the present invention.

FIG. 3 is a front view of the same.

FIG. 4 is an enlarged perspective view showing the periphery of a rotating body and a pressure roller.

FIG. 5 is an enlarged perspective view showing the periphery of the wire rod guide and the operation stop switch.

FIG. 6 is a perspective view showing how a placing tray and a covered electric wire are drawn out.

FIG. 7 is an explanatory diagram showing a problem in paying out a covered electric wire that is freely wound in a coil shape.

[Explanation of symbols]

 1 Covered Wire Feeding Device 2 Electric Wire Processing Device 3 Electric Wire Feeding Unit 5 Operation Box 6 Reduction Gear Unit 6a Output Shaft 7 Timing Belt 8 Operation Panel 9 Operation Switch 10 Top Plate 12 Mounting Tray 12a Edge 12b Bottom 13 Guide Slit 14 Opening Part 16 Support pole 17 Supporting body 18 Control rod 19 Eave-shaped overhanging part 20 Tapered surface 22 Support rod 23 Supporting special plate 24 Substrate holder 25 Clamp lever 27 Arm holder 28 Ring stay 29 Ring arm 30 Guide ring 32 Rotating body 32a Axis 33 Base part 34 Flange 34a Detection plate 35 Detection hole 37 Feeding detection sensor 39 Pressure contact roller 40 Pin 41 Rotating rod 42 Spring mounting rod 43 Spring engagement part 44 Pressure contact spring 46 Guide hole 47 Wire rod guide 48 Mounting rod 4 9 rotation arm 49a contact part 50 rotation shaft 51 operation stop switch 52 support spring 54 heater 55 support rod 56 heater body M motor W covered wire

Claims (3)

[Scope of utility model registration request] 1. A device for feeding a covered electric wire or stopping the feeding appropriately according to the processing condition of an electric wire processing device which is the next step, in which the covered electric wire wound freely in a coil shape is placed, It is provided with a mounting tray which is driven by a speed reducer unit and rotates at a predetermined speed, a support pole which is raised upward from the rotation center of the mounting tray and rotates together with the mounting tray, and a tip of the support pole. There is a control rod having one end fixed to the support and the other end hanging down in a parabolic shape with the other end free, and above the support, the movement of the covered electric wire in the linear direction is detected by a detection plate. The rotation of the covered wire, which detects the movement of the covered wire, and the feed-out detection sensor that commands the motor to send out a predetermined amount of covered wire. Equipment. 2. The rotating body is formed by forming flanges at both ends of a cylindrical base, and one of the flanges is provided with a plurality of detection holes continuously at regular intervals, and this is used as a detection plate. At the same time, the pressure contact roller abuts on the outer peripheral surface of the base portion, and by passing the covered electric wire between the base portion and the pressure contact roller, the linear movement of the covered electric wire is converted into the rotation of the detection plate. The device for feeding a covered electric wire according to claim 1, characterized in that. 3. A wire rod guide having a guide hole slightly larger than the wire diameter of the covered electric wire is provided below the rotating body, and the wire rod guide is provided at one end of the rotating arm. At the same time, an operation stop switch is provided in the vicinity of the other end of the rotating arm, and the operation stop switch is operated by contacting the contact portion of the end of the rotating arm. The covered electric wire feeding device as described in 1 or 2.