JPH0577165U - Wire rod feeding device - Google Patents

Abstract

(57) [Summary] [Purpose] A wire can be smoothly fed out without being affected by differences in the shape and thickness of the wire. [Structure] A wire rod feeding device 1 of the present invention includes a support rod 7 for directly supporting the wire rod W, and the wire rod W between the support rod 7.
A holding mechanism 8 for holding the motor, a motor M and a speed reducer unit 10 for transmitting a drive to the supporting rod 7, and a detecting section 9 for detecting a change in the throughput of the wire rod W in the next process. Makes it possible to select two mechanisms, that is, the bobbin holding mechanism 8a and the free-winding holding mechanism 8b, and the detecting unit 9 converts the change in the throughput of the wire W into the angular displacement of the detection rod 27. It is characterized in that it is detected and the rotation speed of the motor is increased or decreased based on the detected amount.

Description

[Detailed description of the device]

[0001]

[The purpose of the device] [Industrial applications]

 The present invention relates to a wire rod feeding device that enables a smooth wire supply by correcting the curl and curl of the wire rod and preventing the entanglement during the secondary processing of the wire rod in the next step. In particular, the present invention relates to a wire-feeding device that can handle sudden changes in the processing conditions of secondary processing and can be used regardless of the binding state of the wire or the type of wire.

[0002]

[Background of the invention]

 The covered electric wire used for wiring is delivered in a state that it is wound around a bobbin like a bobbin with flanges at both ends, and the covered electric wire is delivered in a coiled state. Then, the applicant has already applied to the application device for the covered electric wire, the corresponding application to the bobbin wound covered electric wire, to the Japanese Patent Application No. 2-129244, the Japanese Patent Application No. 3-67425, and the freely wound covered electric wire. Corresponding applications extend to Japanese Patent Application No. 2-129243 and Japanese Patent Application No. 3-92399.

Among these, as a device corresponding to a covered electric wire wound around a bobbin, Japanese Patent Application No. 3-67425 “Coating electric wire feeding device” is used to temporarily fix the covered electric wire fed from the bobbin to a fixed pulley and a moving pulley. With a stocker consisting of and, a certain amount of stock is stored to respond to a sudden change in the processing status of secondary processing. However, even if such a stocker alone is not sufficient, it may occur depending on the type of secondary processing, and there was the problem that the mechanism became complicated.

Further, for a freely wound coated electric wire, a device of a type in which the covered electric wire is placed horizontally and is fed upward while rotating the electric wire is presented, but this is for a wire having a relatively small diameter. This is an effective method and could not be used for wire rods such as multicore parallel leads and large diameter coaxial cables.

Further, all of the devices disclosed in these applications are single-purpose machines, and there is no device that can handle both bobbin wound or freely wound covered electric wires. In addition, these applications are intended for relatively thin single-core coated electric wires, such as the multi-core parallel leads or large-diameter coaxial cables or nylon tubes or heat-shrinkable tubes for protecting these covered electric wires. No device of this kind has been developed yet for large diameter or irregularly shaped wire.

[0006]

[Technical items we tried to develop]

 The present invention has been made in view of such a background, and by improving the wire rod holding mechanism and the wire rod throughput detection unit, it is possible to cope with a sudden change in the processing state of the secondary processing and the binding state of the wire rod. This is an attempt to develop a new universal wire feeding device that can be used regardless of the type of wire or wire.

[0007]

[Device configuration] [Means for achieving the purpose]

 The wire rod feeding device, which is the first invention of the present application, is a device for feeding the wire rod appropriately or stopping the wire feeding according to the processing situation of the wire rod treating device which is the next step, and the device directly supports the wire rod. A support rod, a holding mechanism that holds the wire rod between the support rod, a motor and a speed reducer unit that rotate the support rod at a predetermined speed, and a change in the amount of wire rod processed in the wire rod processing device, which is the next process. The detection unit includes a detection unit for detecting, and the detection unit detects a change amount of the processing amount of the wire rod into an angular displacement and an angular displacement amount indicated by the detection rod at a plurality of points to start the motor. The motor is configured to include a detector for instructing acceleration, and the motor receives information from the detector to maintain the rotation speed of the motor at a steady speed, and also to increase the speed in one step or multiple steps. Featuring It is those composed of Te.

In addition to the above requirements, the wire rod feeding device according to a second invention of the present application is such that the holding mechanism is provided by being fitted to a support portion on the base end side of the support rod and a rod-shaped portion extending from the support portion. A bobbin holding mechanism including a fixing portion, two flange plates provided between an attachment connected to the support portion and the fixing portion, and one or both of these flange plates. It is characterized in that a free-winding holding mechanism constituted by a wire rod support portion provided can be selectively used. Then, these means are used to achieve the above object.

[0009]

[Function of the device]

 The detection unit in the wire feeding device of the present invention has a detection rod that acts relatively loosely with respect to the wire, and detects the change in the processing amount of the wire in the wire processing device in the next step by converting it into an angular displacement. Therefore, it is possible to feed the wire smoothly without being affected by changes in the thickness and shape of the wire, and to enable simple and reliable detection of changes in the processing amount in the wire processing equipment that is the next process. Increase or decrease the rotation speed of the motor based on.

Further, the holding mechanism in the wire rod feeding device according to the present invention holds the bobbin-wound wire rod by sandwiching the bobbin between the supporting portion and the fixing portion, and the attachment and the fixing portion attached through the supporting portion. By the two flange plates provided between the flange plate and the wire rod support portion provided between the flange plates, the freely wound wire rod can be held.

[0011]

【Example】

 The wire feeding device of the present invention will be specifically described below with reference to the drawings. In the description, the structure of the wire rod feeding device of the present invention will be described first, and then the operating state thereof will be described. Reference numeral 1 in the drawing is a wire rod feeding device according to the present invention, which is used for manufacturing a wire harness with a single terminal or the like and is used for wiring between various electronic parts. It can be used for a wide range of wire rods W such as relatively large diameter multi-core parallel leads for antennas such as diameter coated wires, televisions, FM tuners, coaxial cables or nylon tubes or heat shrinkable tubes for protecting coated wires. ..

The wire rod feeding device 1 of the present invention is provided in front of the wire rod processing device 2 for secondary processing of the wire rod W via a wire rod feeding unit 3 for assisting the feeding of the wire rod W, and its structure is a support base. 5, a body frame 6 having a vertically long rectangular shape is provided, and by way of example, a supporting rod 7 and a holding mechanism 8 are arranged above one side surface thereof, and a detecting portion 9 is arranged below the supporting rod 7. In the frame 6, a motor M for rotating the support rod 7 at a predetermined speed and a speed reducer unit 10 are provided.

Of these, the support rod 7 and the holding mechanism 8 are parts that are characteristic of the present invention, and are provided for the output shaft 11 of the speed reducer unit 10 provided in the main body frame 6. The support rod 7 has a multi-conical frustoconical bearing portion 7a on the attachment side of the reduction gear unit 10 with the output shaft 11 (hereinafter referred to as the base end side), and a rod portion 7b is further extended from this bearing portion 7a. Formed and made up. The support portion 7a is provided with a plurality of screw holes 7c used for fixing the output shaft 11 of the reduction gear unit 10 on the outer peripheral surface of the support portion 7a, and forms a free-winding holding mechanism 8b described later. At this time, a key groove 7d for connection with the attachment 12 to be attached is provided. Further, the key groove 11a provided on the output shaft 11 serves as a key receiving portion (not shown) used to secure the fixation to the support portion 7a.

A holding mechanism 8 is provided for such a supporting rod 7, and the holding mechanism 8 has a structure that allows selection between the bobbin holding mechanism 8a and the free-winding holding mechanism 8b. That is, in order to hold the wire W wound on the bobbin B in the wire rod feeding device 1 of the present invention, the bobbin holding mechanism 8a is used, and the wire W is directly wound in a coil shape. The free winding holding mechanism 8b is used for holding.

The bobbin holding mechanism 8a includes a support portion 7a of the support rod 7 and a fixing portion 13 that can be fitted to a rod-shaped portion 7b extending from the support portion 7a and fixed at an appropriate position. It is composed by. When the bobbin B on which the wire W is wound is held by such a bobbin holding mechanism 8a, one end surface of the bobbin B is brought into contact with the tapered surface of the support portion 7a, and the other end of the bobbin B is held. The taper surface of the fixing portion is brought into contact with the end surface to hold and hold the bobbin B.

On the other hand, as shown in FIGS. 2 and 7, the free-winding holding mechanism 8 b is provided with an attachment 12 connected to the support portion 7 a and two pieces provided between the attachment 12 and the fixing portion 13. The flange plates 14 and the wire rod support portions 15 provided between the flange plates 14 are provided. Of these, the attachment 12 is provided with a connection port 16 for receiving the supporting portion 7a of the support rod 7 penetrating the center thereof, and a mounting flange 17 used for mounting the flange plate 14 on the outer periphery.

The flange plate 14 attached to the attachment 12 is formed by radially providing a plurality of elongated holes 18 to a thin disk-shaped member as an example. In addition, the flange plate 14 on the side attached to the attachment 12 in this manner is defined as the proximal end flange plate 14a, and this term is used in the following description. As described above, the support rod 7 provided with the attachment 12 and the base end side flange plate 14a with respect to the support portion 7a is provided with another flange plate 14 and the fixing portion 13.

The flange plate 14 is defined as the free end side flange plate 14b, and this term will be used in the following description. The free end side flange plate 14b has basically the same structure as the base end side flange plate 14a, and the rod shape on the support rod 7 is so adjusted that the distance between the flange plates 14 can be changed depending on the amount of the wire W. It is configured to be loosely fitted to the portion 7b.

A wire rod support portion 15 is provided for such a flange plate 14. In the embodiment shown in FIG. 7, a bearing pin 20 is used as the wire rod bearing portion 15, and the bearing pin 20 is engraved with a male screw on the attachment end side with the nut 21. It is made to pass through an elongated hole provided in the side flange plate 14a and fixed to the proximal side flange plate 14a by the nut 21. Further, as the nut 21 used here, a T-slot nut can be applied as an example, and in this case, it can be freely attached and detached without a tool. Further, the support rod 7 and the holding mechanism 8 may be provided only on one side surface of the main body frame 6, or may be provided on a plurality of side surfaces or more side surfaces.

Below the support rod 7 and the holding mechanism 8 thus configured, a detection unit 9 which is one of the characteristic configurations of the present invention is provided. The detection unit 9 is fixed to the shaft holder 25 provided for the main body frame 6, a rotation shaft 26 supported by the shaft holder 25 so as to be freely rotatable, and is integrally rotated by the rotation shaft 26. The detection rod 27, a detector 28 that detects the inclination of the detection rod 27, issues a command to the motor M to start and speed up, and a set spring 29 that maintains the posture of the detection rod 27.

Of these, the detection rod 27 has a small diameter and is sufficiently long, and is made of a round bar that can bend with respect to a force in a direction perpendicular to the axis and elastically change its shape. A guide ring 31 is provided below the rod. The wire rod W that has been fed out is guided to the wire rod feeding unit 3 and the wire rod processing device 2 in the subsequent stage through the guide ring 31. The detector 28 is composed of, for example, a cam 30 and a switch SW that comes into contact with the cam 30 and starts or accelerates the motor M. Of these, the cam 30 is composed of two cams, a starting cam 30a that abuts the starting switch SW1 of the motor M and an increasing cam 30b that abuts the increasing switch SW2 of the motor M. These cams 30a, 30b. By providing the rotating shaft 26 at different operating positions, the switches SW1 and SW2 are acted on in accordance with the inclination of the detection rod 27.

A motor M that rotates the support rod 7 in both forward and reverse directions and a speed reducer unit 10 that reduces the rotation speed of the motor M are provided in the main body frame 6. The output of the motor M is the timing belt 32. Is transmitted to the input shaft of the speed reducer unit 10 via the worm 33 attached to the input shaft and the worm wheel 34 meshing with the worm 33, and is projected from the worm wheel 34 to the side surface of the main body frame 6 while being decelerated. The rotation is transmitted to the output shaft 11, and the rotation is transmitted to the support rod 7 attached to the output shaft 11. In this embodiment, the decelerator mechanism of the decelerator unit 10 uses the worm 33 and the worm wheel 34, but in addition to this, a mechanism for decelerating by arranging bevel gears and spur gears having different numbers of teeth in multiple stages Can also be adopted. However, when the worm 33 and the worm wheel 34 are used, the rotation of the worm wheel 34 side is not transmitted to the worm 33, so that there is an advantage that a separate braking mechanism need not be provided.

Although not shown in the main body frame 6 in which the motor M and the speed reducer unit 10 are provided, a command from the starting switch SW1 and the speed increasing switch SW2 is processed and transmitted to the motor M. In addition to the control mechanism, the front panel 6a is provided with an operation switch 35 such as a speed adjusting knob of the motor M, a power switch, and a forward / reverse changeover switch.

Next, the operating state of the wire rod feeding device 1 of the present invention having such a structure will be described. i) Installation of wire rod First, the operator installs the wire rod W on the support rod 7. When installing, depending on whether the wire W is wound around the bobbin B or the wire W alone is freely wound, the bobbin holding mechanism 8a or the free winding holding mechanism 8b is used to support the rod 7. The wire W is installed on.

In the case of installing a bobbin-wound wire In this case, the bobbin B on which the wire W is wound is inserted from the rod-shaped portion 7b side of the support rod 7 and pushed in until it abuts on the support portion 7a, and further into the rod-shaped portion 7b. The fixing portion 13 is fitted with the taper surface on the inner side and brought into contact with the other end surface of the bobbin B so as to be fixed by the handle 13a. In order to secure the bobbin B more securely, a bracket 37 or the like may be appropriately provided on the fixing portion 13 and the end faces of the bobbin B as shown in FIG.

In the case of installing a freely wound wire rod In this case, first, the attachment 12 is inserted from the rod-shaped portion 7b side of the support rod 7, and the connection port 16 is attached to the support portion 7a to be attached. Then, the base end side flange plate 14a is also inserted from the side of the rod portion 7b, and is attached using the attachment flange 17 of the attachment 12. Although not shown in the figure, the attachment 12 and the proximal flange plate 14a are properly attached by screws and key engagement. Further, a plurality of bearing pins 20 constituting the wire rod bearing portion 15 are further attached to the elongated holes 18 by bolts 21 on the base end side flange plate 14a.

The attachment 12, the base end side flange plate 14a, and the support pin 20 can be preassembled. By preassembling in this way, the work time for attaching the wire W 1 can be shortened. Then, a wire W freely wound in a coil shape is attached to the bearing pin 20 attached in this manner so as to cover it from the outside. Thereafter, the free end side flange plate 14b and the fixing portion 13 are similarly inserted from the rod-shaped portion 7b side and fixed at appropriate positions according to the winding width of the wire W. In this case, as shown in FIG. 7, the attaching direction of the fixing portion 13 is opposite to that of the bobbin holding mechanism 8a so that the taper surface is outward and the smooth surface is in contact with the free end side flange plate 14b. To Further, the fixing portion 13 and the free end side flange plate 14b are separately attached to the support rod 7 as described above, and the fixing portion 13 and the free end side flange plate 14b are fixed to the support rod 7 by screws or the like. It can also be attached.

Ii) Feeding out the wire rod After the wire rod W is installed on the support rod 7 in this way, the end portion of the wire rod W is pulled out and passed through the guide ring 31 of the detection rod 27 to feed the wire rod at the subsequent stage. It reaches the wire rod processing device 2 through the unit 3. Then, the power is turned on by the operation switch 35, and the start of the secondary processing in the wire rod processing device 2 is waited for. Then, when the secondary processing in the wire rod processing device 2 is started, the wire rod W suspended by the guide ring 31 and the wire rod feeding unit 3 or the like directs the pulling force to move the detection rod 27 to the position indicated by reference numeral I in FIG. To the position of code II.

With the movement of the detection rod 27, the activation cam 30a also rotates and comes into contact with the switch lever of the activation switch SW1 to activate the activation switch SW1 to command activation of the motor M. Then, the rotation of the motor M is transmitted to the speed reducer unit 10, reaches a predetermined number of rotations, and is transmitted to the support rod 7, so that the wire W is started to be fed out.

Iii) Accelerated feeding When the feeding speed of the wire rod fed to the wire rod processing device 2 in this manner is slower than the processing speed of the wire rod processing device 2, the wire rod W is further subjected to a tensile force and is detected. The rod 27 is moved to the position III in FIG. With the movement of the detection rod 27, the speed increasing cam 30b also rotates and comes into contact with the switch lever of the speed increasing switch SW2, thereby increasing the rotation speed of the motor M and increasing the feed of the wire rod W fed out. Speed up.

Iv) Stopping the Feeding When the processing speed in the wire rod processing device 2 decreases or when the processing is completed, the tensile force applied to the wire rod W decreases and the inclination of the detection rod 27 also decreases. Inside, it descends from position III to position II and then position I. Along with this, the feeding speed of the wire W is reduced, and finally the feeding of the wire W is stopped.

V) Completion of feeding When the wire rod W installed on the support rod 7 is all fed out, the tension state of the wire rod W is released, and the detection rod 27 is urged by the set spring 29, and in FIG. , Move from position II to position I. Then, along with this, the rotation of the motor M is stopped, and the feeding of the series of wire rods W is completed. Then, the next wire W is installed on the support rod 7 in accordance with the above procedure to prepare for the next feeding.

[0033]

[Effect of the device]

 The wire rod feeding device 1 of the present invention is configured as described above, and exhibits the following effects. That is, in the present invention, the drawn wire W is guided to the next step only by being passed through the guide ring 31 of the detection rod 27, and the change in the throughput of the wire W is detected by the inclination of the detection rod 27. Since the change in the throughput of the wire W is detected by a relatively simple mechanism, it can be used without depending on the shape and thickness of the wire W, and the rotation speed of the motor can be increased or decreased based on this detected quantity, resulting in a sudden It can also handle changes in the processing status of the next processing.

Further, since it is possible to select two holding mechanisms, that is, a bobbin holding mechanism 8a and a free-winding holding mechanism 8b as the wire rod W holding mechanism 8, the wire rod W is wound on the bobbin B. If so, it can be used regardless of whether it is delivered in a coiled form, and its versatility is excellent.

[Brief description of drawings]

FIG. 1 is a side view showing an installed state of a wire rod feeding device of the present invention.

FIG. 2 is a perspective view showing a state in which a front panel of the same is removed.

FIG. 3 is a front view of the same.

FIG. 4 is a side view showing a part of the same cut away.

FIG. 5 is an exploded perspective view of a support rod and a holding mechanism.

FIG. 6 is an exploded perspective view of a detection unit.

FIG. 7 is a vertical sectional side view showing a holding mechanism for free winding.

FIG. 8 is an explanatory diagram showing the relationship between the feeding of the wire rod and the angle of the detection rod.

[Explanation of symbols]

 1 wire rod feeding device 2 wire rod processing device 3 wire rod feeding unit 5 support base 6 main body frame 6a front panel 7 support rod 7a support portion 7b rod portion 7c screw hole 7d key groove 8 holding mechanism 8a bobbin holding mechanism 8b free winding holding Mechanism 9 Detection unit 10 Reduction gear unit 11 Output shaft 11b Key groove 12 Attachment 13 Fixed part 13a Handle 14 Flange plate 14a Base end side flange plate 14b Free end side flange plate 15 Wire rod support part 16 Connection port 17 Mounting flange 18 Long hole 20 Bearing pin 21 Nut 25 Shaft holder 26 Rotating shaft 27 Detecting rod 28 Detector 29 Set spring 30 Cam 30a Starting cam 30b Speed increasing cam 31 Guide ring 32 Timing belt 33 Worm 34 Worm wheel 35 Operation switch 37 Bracket SW Switch SW1 Start-up switch SW2 Speed-up switch W Wire rod B Bobbin M Motor

Claims (2)

[Scope of utility model registration request] 1. A device for feeding out a wire rod or stopping the feed out according to the processing status of a wire rod processing device which is the next step, the device comprising a support rod for directly supporting the wire rod,
A holding mechanism that holds the wire rod between the support rod, a motor and a speed reducer unit that rotate the support rod at a predetermined speed, and a detection unit that detects a change in the throughput of the wire rod in the wire rod processing apparatus that is the next step. And a detection rod for converting a change in the throughput of the wire rod into an angular displacement, and an angular displacement amount indicated by the detection rod over a plurality of positions, and a command for commanding start-up acceleration of the motor. And a motor for receiving the information from the detection unit to maintain the rotation speed of the motor at a steady speed and to increase the speed in one step or multiple steps. apparatus. 2. A holding mechanism for a bobbin, which is constituted by a support portion on the base end side of the support rod and a fixing portion fitted to a rod-like portion extending from the support portion, and the holding mechanism is connected to the support portion. The free-winding holding mechanism configured by the two flange plates provided between the attachment and the fixing portion and the wire rod supporting portion provided on either or both of these flange plates can be selectively used. The wire feeding device according to claim 1, which is characterized in that.