JP2696830B2 - Wrapping device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a wrapping device for automatically winding a lead wire around a terminal pin, and more particularly to a wrapping device which is bonded and fixed to a core of a rotary transformer used in a VTR. The present invention relates to a wrapping device suitable for automatically wrapping a lead wire of a terminal to a designated terminal pin of a base. [Summary of the Invention] The present invention relates to a device in which eight lead wires of a rotary transformer fixed to a platen are automatically wrapped to terminal pins on a base provided adjacent to each other at a small interval. The lapping head is rotated while the lead wire is held by the chuck, so that the lead wire is pulled out from the chuck and wound around a terminal pin to perform lapping. [Prior art] Generally, in a VTR, a magnetic tape is helically wound around a head drum, and a track is formed diagonally on the magnetic tape using a rotating head.
Helical scan recording / reproduction is performed. Therefore, means for transmitting and receiving signals between the rotating side and the fixed side is required. For this purpose, a rotary transformer has conventionally been used. When assembling such a rotary transformer, a wire constituting a coil is wound around concentric grooves formed in a core. In the case of a four-channel rotary transformer, since coils are wound around four concentric grooves, eight lead wires are drawn out from the back surface of the core. These leads are 1
Wrapping was performed by winding three to four times around the designated terminal pin by book, and an excess portion of the lead wire was torn off using the corner of the terminal pin. When two lead wires are entangled in each channel, the wrapping is performed after the entanglement is released. [Problems to be Solved by the Invention] Conventionally, the wrapping of the lead wire of the terminal of the coil of the rotary transformer has been performed manually by a human. Therefore, it takes about 50 to wrap the eight lead wires.
It took seconds of time. In addition, although the lead wire of each channel must be wrapped to a designated terminal pin, it may be wrapped to an incorrect terminal pin, which may cause a polarity defect. Moreover, such a lapping operation has a problem that the operation is difficult because not only the diameter of the lead wire is small, but also the interval between adjacent terminals is very small. Further, there is a problem that it is necessary to carry out a residual material treatment of the torn lead wire. The present invention has been made in view of such a problem, and an object of the present invention is to provide a wrapping device that automatically winds a lead wire around a terminal pin in a short time. [Means for Solving the Problems] The present invention relates to a wrapping device for automatically winding a lead wire around a terminal pin, comprising a pair of rotating members, and their tip portions constituting a clamping portion, A chuck that is urged by a spring so that the clamping portions of the pair of rotating members close and clamp each other, and clamps and holds a free end cut to a predetermined length of the lead wire; A wrapping head having an inclined groove on the outer peripheral surface, and a pin insertion hole formed of an eccentric hole for receiving the terminal pin formed on a tip end side end surface; a rotating shaft for rotating and driving the wrapping head; and the rotating shaft. Flexible support means for floatingly supporting the lapping head at the tip of the rotary shaft, and a universal joint interposed at a position in the middle of the rotating shaft, The lead wire is hooked by the inclined groove of the lapping head which received the terminal pin through the pin insertion hole in a state where the terminal pin was pinched and held, and the wrapping head was rotated by the rotating shaft, whereby the lead wire was removed from the chuck. And wrapping it around the terminal pin while pulling out. [Operation] Accordingly, the free end side of the lead wire cut to a predetermined length is held and held by the chuck, and the terminal pin on which the lead is wound is received by the pin insertion hole formed of the eccentric hole of the lapping head, and The lead wire is hooked on the inclined groove of the lapping head, and the wrapping head is rotated by a rotation shaft having a universal joint interposed in a middle portion, so that the lead wires sequentially drawn from the chuck are wound around the terminal pins. Will be attached. [Embodiment] The wrapping apparatus according to the present embodiment is an apparatus for wrapping a lead wire of a coil wound around a core of a rotary transformer on a terminal pin. The core 10 of the rotary transformer is supplied while being mounted on a circular convex portion 12 formed on the upper surface of a platen 11 shown in FIG. This platen 11
A pin 13 is implanted on the upper side, and a contact spring 14 supported at both ends by the pin 13 holds a tip end of a lead wire 15 of a terminal of a coil wound around the core 10. As shown in FIGS. 1 and 3, such a lead wire 15 is wrapped around a terminal pin 18 implanted on a projection 17 of a ring-shaped base 16. Note that the lead wire 15 is
Is formed on the outer peripheral side thereof. The overall arrangement of the lapping device is configured as shown in FIG. 12 and includes four lapping stations 21, 22,
It consists of 23 and 24. Rotary transformer core 10
The eight leads 15 drawn out above are wrapped by these wrapping stations 21 to 24. Of the eight terminal pins 18 provided on the ring-shaped base 16 mounted on the core 10, two terminals symmetrical with respect to the center and separated by 180 ° in the circumferential direction. Pins 18 are wrapped by respective stations 21-24,
The wrapping to a total of eight pins 18 is completed by the four stations 21 to 24. In this device, only two stations are wrapped in one station in consideration of maintainability, but four stations can be wrapped at the same time. The arrangement of the four stations 21 to 24 can be freely changed. Next, the configuration of each lapping station will be described. Each lapping station is provided with a base 28 as shown in FIGS. 13 to 15, and a pair of guides 29 standing upright on the base 28 raises and lowers the lifting plate. 30
Is supported. The elevating plate 30 is connected to a piston rod of an air cylinder 31, and is moved up and down by the cylinder 31. A chuck unit 32 and a lapping unit 33 are supported on the elevating plate 30. On the other hand, a lead guide unit 70 described later is directly mounted on the lower base 28. Here, the chuck unit 32 is a pair of chucks.
43, 44 and a mechanism for opening and closing and moving such chucks 43, 44. Wrapping unit 33
What is wrapping head 63 and this wrapping head
Refers to an apparatus consisting of 63 support mechanisms, rotary drive mechanisms, and movement mechanisms. The lead guide unit 70 refers to a device including the lead wire retainer 73, a guide mechanism therefor, and a drive mechanism. Next, the specific structure of the chuck unit 32 will be described.
This will be described with reference to FIGS. Support plate on lifting plate 30
37 is arranged, and the air cylinder is
38 are supported. The piston rod of the cylinder 38 is connected to the drive plate 39. The drive plate 39 supports a rod 40, and an arm 41 is connected to the lower end of the rod 40. A pair of chucks 43 and 44 are rotatably supported by the arm 41 via pins 42. These chucks 43 and 44 allow the lead wire 15 to be
Is to be held. The holding arm 41 is further provided with an opening / closing lever 46 via a pin 45.
Is attached, and a pointed portion 47 provided on the tip side pushes the chucks 43 and 44. A support plate 80 is provided below the elevating plate 30, and an arm 48 is attached to the support plate 80.
This supports the roller 49. A cam 50 is provided on the base end side of the arm 41. Next, the lapping unit 33 will be described. As shown in FIG.
It has. The drive shaft 53 penetrates the base 30 and has a pulley 54 at an upper end thereof. The pulley 54 is interlocked with a motor 56 shown in FIGS. 13 and 14 via a belt 55. A gear is provided at the lower end of the drive shaft 53.
A gear 57 is attached, and the gear 57 meshes with a gear 59 of a driven shaft 58 provided on both sides of the drive shaft 53. The driven shaft 58 is provided with an Oldham coupling 60 at an intermediate position, and the lower end lapping head 63 is floatingly supported by a pair of upper and lower thrust bearings 61 and packing 62. The wrapping head 63 is for winding the lead wire 15 around the terminal pin 18 as shown in FIGS. 4 to 8, and has an eccentric hole 64 formed in a central through hole. An inclined groove 65 is formed on the outer peripheral surface on the tip side. Further, a spring 66 is wound around the outer peripheral surface of the head 63, and a tip end of the spring 66 serves as a hook 67, and the hook 67 holds the lead wire 15. Next, a description will be given of a lead guide unit 70 that holds down the lead wire 15 when the lead wire 15 is wrapped by the wrapping head 63.The unit 70 is directly mounted on the base 28 as shown in FIG. Supported on base 71. Each unit is provided with an air cylinder 72, and a lead wire presser 73 and a presser bracket 74 are attached to the distal end side of the rod of the air cylinder 72. Further, a rectangular opening 75 is formed in a portion between the pair of lead guide units 70 of the base 28, and the platen 11 is supplied from below through the opening 75. Next, an operation of wrapping by the apparatus having the above configuration will be described. As shown in FIG. 2, while the lead wire 15 of the coil of the core 10 is drawn out,
The platen 11 is supplied by a conveyor in a state where the platen 11 is supported. When the platen 11 is lifted from the conveyor, the lift plate 30 is moved by the air cylinder 31 shown in FIG.
Descends. At this time, the chuck unit shown in FIGS. 15 to 17 is lowered, and the chucks 43 and 44 straddle the lead wire 15 in an open state as shown in FIG. Core 10
As shown in FIG. 15, the position is regulated by a work positioning plate 36 elastically supported by a spring 35 at the tip of the lapping unit 33. At the same time, the lapping head 63 contacts the terminal pins 18. Then wrapping head 63
Compresses the spring 68 via the detecting body 69 shown in FIG. 18 and escapes upward. In this state, the wrapping head is
Drive 63. Motor 56 rotates with belt 55 and pulley
It is transmitted to the drive shaft 53 shown in FIG. The rotation of the drive shaft 53 is driven by the driven shaft 58 via the gear 57 and the gear 59.
To the wrapping head 63 by the driven shaft 58.
Will be rotated. At this time, the lapping head 63 makes two rotations to receive the terminal pin 18 in the eccentric hole 64 formed at the lower end thereof (see FIGS. 4 and 7). Since the positional accuracy and inclination of the terminal pins 18 are rough, it is difficult to insert the terminal pins 18 into the wrapping head 63. Therefore, the following measures are taken. First, insert the insertion hole formed at the tip of the lapping head 63 into the eccentric hole 64.
, Thereby facilitating the introduction of the terminal pins 18. Further, as shown in FIG. 18, the lapping head 63 is floatingly supported on the driven shaft 58, and the lapping head 63 is flexibly supported by a pair of upper and lower thrust bearings 61 and packing 62. The rotation to the lapping head 63 is transmitted through an Oldham coupling 60 provided on the driven shaft 58, so that the lapping head 63 can more effectively follow the terminal pins 18. Has become. When the terminal pin 18 is inserted into the wrapping head 63,
The chucks 43 and 44 shown in FIG. 16 and FIG.
By the drive plate 39 and the rod 40. At this time, the arm 41 supporting the chucks 43 and 44
Is caused to perform a swing operation by the cam 50. When the arm 41 is pulled up, the end of the lever 46 supported by the arm 41 via the pin 45 is separated from the roller 49, so that the spring 46 causes the lever 46 to be deflected about the pin 45 in FIG. It is rotated clockwise. Therefore, the pointed portion 47 of the lever 46 moves upward, and the
The chucks 43 and 44 shown in the drawing are closed, and the lead wire 15 is held by these chucks 43 and 44 and moved to a fixed position. In this manner, the lead 15 is moved to a position facing the front surface of the lapping head 63 as shown in FIG. At this time, the lead wire 15 has two positions indicated by a and b in FIG. In this state, the lead wire holder 73 and the holding bracket 74 of the lead guide unit 70 shown in FIG. 19 are advanced by the cylinder 72, and the lead wire 15 at the position a or b in FIG. Push it to the position where it touches. When the lead wire 15 is completely pushed into contact with the lapping head 63, the lapping head 63 starts to rotate again. Then, the lead wire 15 enters along the inclined groove 65 formed on the outer peripheral surface on the tip side of the lapping head 63, and further hooks
It is wrapped while being hooked on 67. At this time, the lead wire 15 is pulled out from the pair of closed chucks 43 and 44. Since the chucks 43 and 44 obtain a clamping force by the spring 51 shown in FIG. 17, by maintaining this force properly, the lead wire 15 is pulled out from the closed chucks 43 and 44. It becomes possible. In order to correctly wrap the lead wire 15 on the terminal pin 18, it is necessary to determine the size and shape of the lapping head 63 under given conditions of the diameter of the terminal pin 18 and the wire diameter of the lead wire 15. is there. The wrapping head 63 shown enlarged in FIGS. 4 to 7 satisfies this condition and has the following features. First, an eccentric hole 64 is formed in a through hole at the center of the lapping head 63. The amount of eccentricity of the eccentric hole 64 is one condition for wrapping well, and as described above, the lapping head 63 is easily inserted into the terminal pin 18 so as to absorb the tolerance of the terminal pin 18. Further, a spring 66 is wound around the outer peripheral side of the wrapping head 63, and a distal end side of the spring 66 is configured as a hook 67. Here, the core 10 of the rotary transformer to be wrapped is very close because the distance between adjacent terminal pins 18 is 1.8 mm. When the adjacent terminal pins 18 are not close to each other, lapping can be performed only by the lapping head 63 alone. However, at this time, the lead wire 15 pulled out from the chucks 43 and 44 comes to fall sideways while wrapping, and when the lead wire 15 falls down sideways, between the adjacent terminal pin 18 and the lapping head 63, There is a possibility that the lead wire 15 is pinched and disconnected. The hook 67 functions effectively in order to prevent the lead wire 15 from falling and breaking. When the wrapping of the lead wire 15 for a predetermined number of times is completed,
Lead wire retainer 73 of lead guide unit 70 shown in FIG.
The presser bracket 74 is retracted by the air cylinder 72. Further, the lifting plate 30 shown in FIG. 15 is lifted by the air cylinder 31, and then the chuck unit 32 is moved by the air cylinder.
At the same time, the platen 11 is lowered and discharged. This completes one cycle. By repeating such an operation for the four stations 21 to 24, the eight lead wires 15 are connected to the corresponding terminal pins 18 as shown in FIG. Thus, according to the wrapping device according to the present embodiment,
The two lead wires 15 are separated from each other in the previous process and fixed to the contact spring 14 before being supplied. And wrapping head
63 is inserted into the pin 18 of the base 16, and the lead wire 15 is guided to the vicinity of the lapping head 63 by using the chucks 43 and 44. Next, this lead wire 15 is led to the inclined groove 65 formed at the tip of the lapping head 63,
By rotating the lapping head 63 in this state, the lead wire 15 is wrapped and connected to the terminal pin 18. Therefore, when two lead wires 15 coming out of the lead wire drawing hole of the core 10 of the rotary transformer are entangled with each other, it has been difficult to discriminate conventionally, but it is possible to mechanically discriminate and separate them. ing. Furthermore, when wrapping by hand, the lead wire 15 was lengthened and the excess part was torn off and the remaining material was processed, but since the lead wire 15 was shortened to the required length and all wrapping was performed , And the process was shortened. Further, by improving the shape, size, and accuracy of the tip of the lapping head 63 or the method of inserting the lead wire 15 into the lapping head 63, a lead wire having a small wire diameter can be provided to the terminal pins 18 adjacent to each other at a pitch of 1.8 mm. The line 15 can be wrapped reliably. From such a thing, without the occurrence of polarity failure in the tact time of 10 seconds,
The thin lead wire 15 can be wrapped. [Effects of the Invention] As described above, the present invention is composed of a pair of rotating members, the distal ends of which constitute a clamping portion, and the clamping portions of the pair of rotating members are closed by a spring. A chuck for pinching and holding a free end cut to a predetermined length of a lead wire, a slanted groove on a distal end outer peripheral surface, and a terminal pin on a distal end side Wrapping head having a pin insertion hole formed of an eccentric hole for receiving the wrapping head, a rotating shaft for rotating and driving the wrapping head, a flexible supporting means for floatingly supporting the lapping head at the tip of the rotating shaft, and a middle of the rotating shaft. And a universal joint interposed at the position of the terminal, and the lead wire is hooked by the inclined groove of the lapping head which receives the terminal pin through the pin insertion hole while holding the lead wire by the chuck. In addition, the wrapping head is rotated by a rotating shaft, so that the lead wire is drawn out from the chuck and wound around the terminal pin. Therefore, according to such a configuration, it is possible to automatically wrap the lead wire with respect to the terminal pin, and it is possible to reduce the time and man-hour required for the lapping. In addition, since the free end cut to a predetermined length of the lead wire is pinched and held by the chuck, it is not necessary to lengthen the lead wire and tear off an excess portion to perform the remaining material processing. Shortens the process. In addition, the chuck itself does not rotate, but stands still with the free end simply held therebetween, while the wrapping head, which receives the terminal pin through the pin insertion hole on the tip side, uses the inclined groove to lead the lead wire. The wrapping can be performed only by the space for inserting the wrapping head because the lead wire is wound around the terminal pin by rotating the terminal pin. It is possible to do. Since such a wrapping head is attached to the tip of the rotating shaft via a flexible supporting means and the pin insertion hole is formed of an eccentric hole, even if the positional accuracy and inclination of the terminal pin are rough. The terminal pins can be securely inserted into the pin insertion holes of the wrapping head, and the wrapping head is rotated stably by a rotating shaft with a universal joint in the middle part, so that the lead wire is securely wound around the terminal pins. Can be attached, leading to a reduction in the lapping defect rate.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an external perspective view showing a core of a rotary transformer with lead wires wrapped, FIG. 2 is an external perspective view of the rotary transformer core before wrapping, and FIG. FIG. 4 is a front view of the lapping head, FIGS. 5 and 6 are side views, FIG. 7 is a bottom view thereof, and FIG. 8 is an enlarged perspective view of a main part showing a lapping operation by the lapping head. , FIG. 9 is a cross-sectional view of a main part showing an operation of pressing a lead wire, FIG. 10 is a front view of the same, FIG. 11 is a plan view of the same, FIG. FIG. 13 is an enlarged plan view of a lapping station, FIG. 14 is a front view showing a vertical drive mechanism, and FIG.
15 is a front view of the chuck mechanism and the lapping mechanism, FIG. 16 is a side view of the chuck mechanism, FIG. 17 is a front view of the same, FIG. 18 is a longitudinal sectional view of the lapping mechanism, and FIG. FIG. In the reference numerals used in the drawings, 15: lead wire 18: terminal pin 43, 44: chuck 58: driven shaft (rotating shaft) 60: Odam coupling (universal joint) 63: lapping head 64 … Eccentric hole 65… Inclined groove 67… Hook 73… Lead wire retainer.

Claims (1)

(57) [Claims] In a wrapping device that automatically winds a lead wire around a terminal pin, the wrapping device includes a pair of rotating members, and their tip portions constitute a clamping portion, and a clamping portion of the pair of rotating members is formed by a spring. A chuck that is urged so as to close and pinch each other to pinch and hold a free end cut to a predetermined length of the lead wire; and a sloping groove on a distal end outer peripheral surface, and a distal end side end surface. A wrapping head having a pin insertion hole formed of an eccentric hole for receiving the terminal pin; a rotating shaft for driving the wrapping head to rotate; and a flexible support for floatingly supporting the wrapping head at the tip of the rotating shaft. Means, and a universal joint interposed at a position in the middle of the rotating shaft, and the terminal pin is inserted while the lead wire is sandwiched and held by the chuck. The lead wire is hooked by the inclined groove of the wrapping head received by the wrapping head, and the wrapping head is rotated by the rotating shaft, so that the lead wire is pulled out from the chuck and wound around the terminal pin. A wrapping device.