JP3499256B2 - Manufacturing equipment for coil filaments for light bulbs - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for manufacturing a coil filament for a light bulb, and more particularly, to an improvement in a supply mechanism of a wire rod for a coil filament, which has versatility. The present invention relates to an apparatus for manufacturing a coil filament for a light bulb. 2. Description of the Related Art A means (wire supply mechanism) for sequentially supplying a tungsten wire (filament wire), and a supplied wire wound around a mandrel (core wire) a predetermined number of times in a helical coil shape. After the coil section is formed, the mandrel is pulled out and the coil filament is formed (coil winding mechanism). Or embedded). FIG. 4 is a side view showing a main part of a conventionally known apparatus for manufacturing a coil filament for a light bulb. A wire rod supply mechanism and a coil winding mechanism are respectively configured as follows. [0003] First, a wire rod supply mechanism comprises a slider support 2, which is vertically arranged on the table 1 and whose height can be adjusted.
A slider 3 horizontally supported and arranged by the slider support 2, a movable base 4 guided by the slider 3 to move forward and backward in a fixed direction, and a wire for forming a coil filament mounted and arranged on the movable base 4 A wire bobbin 6 on which the wire 5 is wound, a wire (wire) guide 7 for guiding the leading end of the wire 5 unwound from the wire bobbin 6 to the coil winding mechanism, and the like. The movable table 4 is moved in a horizontal direction by the CL lot 8 at a predetermined speed and a predetermined distance in synchronization with an operation of a coil winding mechanism described later. Here, the wire bobbin 6 is mounted on the movable table 4.
Formed on a bobbin support 6a planted in a shaft supported by a bearing 6c fixed and mounted so that rotation can be braked with a tightening screw 6b, and integrally wound and wound around Is configured to rewind the wire 5 for use. The wire bobbin 6 is wound with a wire 5 for forming a coil filament having a predetermined length. In addition, the wire guide section 7 includes:
It has a wire groove (not shown) on the upper surface and a mandrel groove (not shown) on the lower surface, and also has a function of slidingly holding a mandrel described later fitted into the mandrel groove (not shown), and A guide plate 7b provided at the tip and a holding roll 7c for holding the wire 5 sent to the guide plate 7b side by tightening a bolt 7a via a holding plate (not shown), and a support shaft 7d as a fulcrum. The configuration is such that a wire holding portion 7e whose tip moves up and down is mounted.
Then, the wire 5 for forming the coil filament inserted through the wire groove side of the guide plate 7b moves forward and backward in synchronization with the operation of the coil winding mechanism so that the tip thereof protrudes from the wire groove by about several mm. The movable table 4 is sequentially supplied in a driven manner.
Further, a support shaft 7d acting as a fulcrum for vertically moving the wire holding portion 7e is fixed and supported by a holding lot 7g via a holding lever 7f. [0005] Next, the coil winding mechanism comprises a pair of plackets of a bearing interior type vertically arranged on the table 1.
Hollow rotating shaft horizontally supported rotatably by 9a, 9b
10, timing pulley mounted on its hollow rotating shaft 10
11, comprising a timing belt 12 suspended on the timing pulley 11, by the timing belt 12,
A configuration is adopted in which intermittent rotation (rotation / stop) is repeated by a drive unit having a gear mechanism (not shown). A rotating drum 13 having a built-in wire chuck and being integrally rotatable is mounted on the distal end of the hollow rotary shaft 10 so as to face the wire guide portion 7. Further, a chuck opening / closing lever 14 whose end is in contact with the front surface of the rotating drum 13 is disposed. The chuck opening / closing lever 14 pivots on the rotating drum 13 with the support shaft 14a as a fulcrum by the vertical movement of the chuck lot 14b. When retracted in the direction, the wire chuck built in the rotating drum 13 opens and closes,
The configuration is such that the distal end of the wire 5 for forming the coil filament supplied from the detergent supply mechanism is pinched and released. Further, a mandrel 17 which is inserted into the hollow rotary shaft 10 and the rotary drum 13 and is attached to the front end of a mandrel rod 16 having a rear end face abutting against a backing plate 15 projects to the front of the rotary drum 13. It is constructed and arranged.
The mandrel 17 is a mandrel rod described later.
When moving forward to the wire guide portion 7 side of the guide plate 7c,
, And slide and rotate to perform the required coil winding. On the other hand, the abutment plate 15 is
With the vertical movement of the stroke rod 18b with the fulcrum at 8a,
The abutment of the roller 18d mounted on the stroke lever 18c which moves forward and backward in the horizontal direction serves to control the forward and backward movement of the mandrel rod 16. On the other hand, in synchronization with the rotation / stop of the coil winding mechanism, the wire guide 7 of the wire feeding mechanism is
The wire 5 is wound around the mandrel 17 a predetermined number of times around the peripheral surface of the mandrel 17 to form a coil filament 19 while retracting in response to the retracting movement of the movable table 4. Here, after the helical coil is formed, the coil is supplied by a wire cutting mechanism (means) 20 which is arranged in advance at the tip of the guide plate 7c and is driven in synchronization with the rotation / stop of the coil winding mechanism. By separating the wire 5 thus obtained, a coil filament for a light bulb is obtained. In addition, the helical coil-shaped winding of the wire 5 around the mandrel 17 is performed.
Is pulled and supplied while being sequentially pulled out from the wire bobbin 6. In the above-described apparatus for manufacturing a coil filament for a light bulb having the above structure, the coil filament wire is sequentially rewound (pulled out) from the wire bobbin 6 of the wire feeding mechanism. Supplied. And this wire 5
In order to facilitate the supply of wire for coil filament, the large diameter (large capacity) wire spool wound neatly at the stage of manufacture and shipment is replaced with a small diameter (small capacity) wire bobbin 6 (Rewinding), mounted and used in the wire supply mechanism. However, when the wire bobbin 6 is wound (re-wound), it is difficult to wind the wire neatly, and the winding of the wire is likely to be uneven or crossed, and the length (amount) of the wire bobbin 6 is wound. If the number is too large, the rotation of the wire bobbin 6 becomes unstable, which hinders the steady supply of the coil filament wire. In other words, the intermittent supply of the coil filament wire in synchronization with the coil winding mechanism cannot be easily achieved in lubrication, and productivity is impaired. Further, even if the tightening screw 6b of the wire bobbin 6 is adjusted and the rotation of the bearing 6c is braked to stabilize the rotation of the wire bobbin 6, fine adjustment is difficult. The tension (back tension) applied to the wire becomes unstable, and there is a problem that the wire 5 is cut off and the coil pitch becomes uneven during coiling by the coil winding mechanism. That is, inconveniences such as a decrease in the operation rate of the manufacturing apparatus, a decrease in the yield, and a decrease in the quality are likely to occur. . These inconvenient problems inevitably lead to an increase in the manufacturing cost of the coil filament for a light bulb, and in fact, they have been raised as a serious problem. SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a manufacturing apparatus capable of easily manufacturing a high-quality coil filament for a light bulb with a good yield while eliminating complicated operation steps. And [0012] An apparatus for manufacturing a coil filament for a light bulb according to the present invention comprises: a wire rod supply mechanism main body for rewinding a wound coil filament wire from a wire spool; A movable base provided with a wire guide portion for guiding a wire supplied by the wire supply mechanism main body, and a movable base installed so as to be able to advance and retreat in a fixed direction; A rotating drum having a wire chuck for gripping the leading end of the wire rod guided by the wire and a mandrel for winding the wire rod with the leading end held on the wire chuck around a coil filament; and intermittently rotating the rotating drum. A timing drive mechanism for winding a wire around a coil filament on a mandrel; and a mandrel disposed between a tip of the mandrel of the rotary drum and a tip of a wire guide of a movable base. A coil fiber separating mechanism for separating the coil filament wound and formed on the reel from the wire, and a drive control mechanism for interlocking and controlling the movable table advance / retreat, intermittent rotation of the rotating drum, and the coil fiber separating mechanism. an apparatus for producing a coil繊條bulb consisting comprises a, the wire supply mechanism body, wire feeding means for feeding the wire to be unwound from the wire spool clamping manner, feeding by the wire feeding means
Detection of a pair of wires placed so as to sandwich the drawn wire
Element, one of the wire detection elements has detected the wire
The other wire detection element detects the wire
Control the wire feed means so that it stops when
And a braking means for applying a predetermined tension to the wire passed between the wire detecting elements . That is, the apparatus for manufacturing a coil filament for a light bulb according to the present invention enables a large-capacity wire rod spool to be mounted by greatly improving the configuration of a wire rod supply mechanism main body. While rewinding a long wire,
In addition, by adopting a configuration that can be supplied with a constant tension, it is possible to produce high-quality coil filaments for light bulbs at low cost without a complicated operation and with good yield. is there. According to the present invention, a wire is wound from a wire spool.
While a pair of rollers intermittently and sandwichly rewind and send out, the length of the unwound and sent out wire is controlled. Then, the control of the feed length of the wire is performed by a wire detecting element for detecting the wire to be fed and a wire detecting element .
And the control circuit. In other words, the large-capacity coil coil wire wound on the wire spool is forcibly rewound and temporarily pooled, and then intermittently and at a predetermined tension for a predetermined length. In this state, it is supplied to the coiling area. Therefore, it is not necessary to rewind (rewind) the wire for the bulb coil filament, and it is possible to completely eliminate the occurrence of uneven winding and winding crossing and unstable supply. Since a stable tension (back tension) is applied and supplied, the occurrence of breakage of the wire rod, unevenness of the coil pitch, and the like can be easily and reliably avoided during coiling by the coil winding mechanism. In other words, there is no danger of lowering the operation rate of the manufacturing apparatus, lowering the yield, lowering the quality, and the like, and also completely eliminates the complicated operations such as the rewinding process and the detachable replacement of a small-diameter (small-capacity) wire bobbin. Will be. An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a side view of a main part of a device for manufacturing a coil filament for a light bulb according to the present invention. The device basically includes a wire feeding mechanism and a coil winding mechanism. Can be said to have the same configuration as the conventional manufacturing apparatus, but is characterized in that a part of the configuration of the wire supply mechanism is largely changed. That is, the wire rod supply mechanism includes a slider support 2 vertically arranged on the surface of the table 1 and having an adjustable height, a slider 3 horizontally supported and arranged by the slider support 2, and a slider 3. A movable base 4 which is guided and moves forward and backward in a fixed direction. The movable base 4 is mounted and arranged on the movable base 4, and the leading end of the wire 5 supplied and rewound from a wire spool 21 which will be described later is supplied to a coil winding mechanism. ) It is composed of a guide section 7 and the like.
The movable table 4 is moved at a predetermined speed for a predetermined distance in synchronization with an operation of a coil winding mechanism described later.
Is moved back and forth in the horizontal direction. As shown in FIG. 2, the wire spool 21 is mounted on a plate-like support base 22 which is disposed (arranged) substantially vertically on the table 1 by a spool support 21a.
And a spool support shaft 21b, and a wire spool 21 is disposed on a side surface of a disc 21c.
Is pressed by the compression spring 21d to apply an appropriate amount of rotational braking. A pair of a metal roller 23a rotating at a fixed axis position and a rubber roller 23c rotatably held by a slider 23b so as to be horizontally movable are provided at the upper end side of the flat support base 22. It has a configuration that functions as a sandwich-type feed roller 23. The slider 23b has a configuration in which a rubber roller 23c is pressed against a metal roller 23a by a tension spring 23d arranged vertically, and the wire 5 supplied from the wire spool 21 is clamped. On the other hand, a speed control motor 24, which is controlled by a wire feed length control means to be described later and is driven intermittently, is arranged at the lower end side of the flat support base 22.
Timing pulleys 25a and 25b are respectively mounted on the rotating shaft extending from the back (rear) and the rotating shaft of the metal roller 23a extending from the back (rear), and are provided between the timing pulleys 25a and 25b. The means for feeding the wire 5 is formed by the suspended timing belt 25c. Further, the flat support body 22 and the movable table 4
Between them, there are arranged a wire feed length control means and a braking means 28 for applying tension to the wire 5 whose feed length is controlled. Here, as shown in FIG. 3 (a) in a side view, in FIG. 3 (b) in a rear view, and in FIG. And a weighting mechanism 27 that adds First, the wire detecting section 26 includes an insulating terminal support 26a having a passage for the wire 5, a pair of wire detecting elements 26b and 26b 'mounted and arranged on the terminal support 26a, and a wire detector. It comprises a control circuit (not shown) connected to the input terminals for 26b and 26b ', for example, a floatless switch manufactured by OMRON Corporation. The output terminal of the control circuit is connected to the speed control motor 24.
When the supplied wire 5 comes into contact with one of the wire detection elements 26b, 26b ', the drive switch of the speed control motor 24 can be turned on and off. Has become. Next, the weighting mechanism
Reference numeral 27 denotes four weight guides 27b made of a quartz tube which are held and planted almost vertically by the weight support 27a, and can be freely moved in the vertical direction while being sandwiched by the weight guides 27b. It is composed of a ceramic annular body (weighted body) 27c, and the wire 5 to be supplied is inserted under the weight of the weighted body 27c, and acts to apply a constant tension. Further, the braking means 28 for applying tension to the wire 5 whose feed length is controlled by the feed length control means,
A support mechanism 28a installed on the surface of the table 1, a guide roller 28b provided with a V-groove on the peripheral surface mounted on the upper end of the support mechanism 28a, and a wire 5 supplied through the guide roller 28b is clamped. A pair of braking rollers 28c, 28c 'for dynamic conveyance, a movable support 28e vertically movable about a support shaft 28d and supporting one of the braking rollers 28c, and a braking roller supported by the movable support 28e 28c and braking roller 2
8c ', the tension spring 2 suspended between a pair of pins 28f to apply the required tension to the wire 5
Consists of 8g. In the braking means 28, the pair of braking rollers 28c, 28c 'are clamped and passed through the wire 5 supplied with one end side being stretched by the weight of the weight body 27c. Then, a required tension (back tension) is applied, and the tension is supplied to the next-stage wire guide portion 7. The next-stage wire guide section 7 has a wire groove on the upper surface and a mandrel groove (both not shown) on the lower surface, and functions to slidably hold a mandrel described later fitted into the mandrel groove. A guide plate 7b provided at the tip end thereof, and a press roll 7c for holding the wire 5 sent to the guide plate 7c side, and the support shaft 7d is supported by a fulcrum. And a wire holding portion 7e whose tip moves up and down is mounted. Then, the wire 5 for forming the coil filament inserted through the wire groove side of the guide plate 7b moves forward and backward in synchronization with the operation of the coil winding mechanism so that the tip thereof protrudes from the wire groove by about several mm. The movable table 4 is sequentially supplied in a driven manner. Further, a support shaft 7d acting as a fulcrum for vertically moving the wire holding portion 7e is fixed and supported by a holding lot 7g via a holding lever 7f. Next, the coil winding mechanism is the table 1
A pair of plackets 9 with internal bearings vertically arranged on top
Hollow rotating shaft 1 horizontally supported rotatably by a, 9b
0, timing pulley 1 mounted on its hollow rotating shaft 10
1, equipped with a timing belt 12 suspended on the timing pulley 11, by the timing belt 12,
A configuration is adopted in which intermittent rotation (rotation / stop) is repeated by a drive unit having a gear mechanism (not shown). A rotating drum 13 having a built-in wire chuck and being integrally rotatable is mounted on the distal end of the hollow rotary shaft 10 so as to face the wire guide portion 7. A chuck opening / closing lever 14 whose end is in contact with the front surface of the rotary drum 13 is disposed. The chuck opening / closing lever 14 is rotated by a vertical movement of a chuck lot 14b about a support shaft 14a. When the shaft 13 is moved back and forth in the axial direction, a wire chuck built in the rotary drum 13 is opened and closed to pinch and release the tip of the wire 5 for forming the coil filament supplied from the wire feeding mechanism. Made up of Further, a mandrel 17 which is inserted into the hollow rotary shaft 10 and the rotary drum 13 and is mounted on the front end of a mandrel rod 16 having a rear end face abutting against the backing plate 15 is protruded and arranged on the front surface of the rotary drum 13. The configuration has been made. The mandrel 17 fits into a wire groove (not shown) of the guide plate 7c when the mandrel rod 16 described later advances toward the wire guide portion 7, and slides and rotates to wind a required coil. I do. On the other hand, the contact plate 15 controls the forward and backward movement of the mandrel rod 16 by the vertical movement of the stroke rod 18b with the support shaft 18a as a fulcrum and the contact of a roller 18d attached to a horizontally movable stroke lever 18c. Have a role. On the other hand, in synchronization with the rotation / stop of the coil winding mechanism, the wire guide section 7 of the wire feeding mechanism is
The wire 5 is wound around the mandrel 17 a predetermined number of times around the peripheral surface of the mandrel 17 to form a coil filament 19 while retracting in response to the retracting movement of the movable table 4. Here, after the helical coil is formed, the coil is supplied by a wire cutting mechanism (means) 20 which is arranged in advance at the tip of the guide plate 7c and is driven in synchronization with the rotation / stop of the coil winding mechanism. By separating the wire 5 thus obtained, a coil filament for a light bulb is obtained. In addition, the helical coil-shaped winding of the wire 5 around the mandrel 17 is performed.
Is pulled and supplied from the wire spool 21 sequentially, intermittently, and with the required back tension suspended. It should be noted that the present invention is not limited to the configuration of the above-described embodiment, and it is possible to make a configuration change or a component change within the scope of the present invention. In the apparatus for manufacturing a coil filament for a light bulb according to the present invention, the wire is intermittently and sandwichedly rewinded and sent out from a wire spool by a pair of rollers, and the unwinding is performed. -A configuration is adopted in which the length of the wire to be fed is controlled. In other words, after the large-capacity filament coil wire wound on the wire spool is forcibly rewound and temporarily pooled, a predetermined tension is applied intermittently and at a predetermined length. In this state, a configuration for supplying the coiling area to the coiling area is adopted. Accordingly, it is not necessary to rewind (rewind) the wire for the bulb coil filament, and the occurrence of unevenness and winding crossing and unstable supply are completely eliminated, while the wire for the bulb coil filament is stable. Since the tension (back tension) is applied while being supplied, the occurrence of breakage of the wire rod, unevenness of the coil pitch, and the like can be easily and reliably avoided during coiling by the coil winding mechanism. In other words, there is no danger that the operation rate of the manufacturing apparatus will be reduced, the yield will be reduced, the quality will be reduced, and the complexity of operations such as the rewinding process and the detachment and replacement of small-diameter (small-capacity) wire bobbins will be completely eliminated. Will be.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view showing a configuration example of a main part of an apparatus for manufacturing a coil filament for a bulb according to the present invention. FIG. 2 is a side view showing a configuration example of a main part of a manufacturing device of a coil filament for a light bulb according to the present invention. FIGS. 3A and 3B show an example of the configuration of a wire feed length control means which is a main part of the apparatus for manufacturing a coil filament for a light bulb according to the present invention, wherein FIG. 3A is a side view, FIG. (c) is a top view. FIG. 4 is a side view showing a configuration of a main part of a conventional apparatus for manufacturing a coil filament for a light bulb. [Description of References] 1 ... Table 2 ... Slider support 3 ... Slider 4 ... Movable table 5 ... Wire for coil coil filament 6 ... Wire bobbin 6a
... bobbin support 6b ... fastening screw 6c ... bearing 7 ... wire (wire) guide 7a ... bolt
7b: Guide plate 7c: Holding roll 7d, 14a, 18
a, 28d: Support shaft 7e: Wire holding part 7f: Holding lever 7g: Holding lot 8: CL lot 9a, 9b: Placket
10… Hollow rotating shaft 11, 25a, 25b… Timing pulley
12, 25c timing belt 13 rotating drum
14… Chuck open / close lever 14b… Chuck rod
15… Patch plate 16… Mandrel rod 17… Mandrel 18b… Stroke rod 18c…
Stroke lever 18d Roller 19 Coil filament 20 Wire cutting means 21 Wire spool 21a Spool support 21b Spool support shaft 21c Disk 2
1d: Compression spring 22: Flat support base 23: Feed roller 23a: Metal roller 23b: Slider
23c… Rubber roller 23d, 28g… Tension spring
24… Speed control motor 26… Wire detection part
26a: Terminal support 26b, 26b ': Detector
26 '... feed length control means 27 ... weighting mechanism 27a ... weighting support 27b ... weighting body guide 27c ... annular weighting body 28 ... braking means 28a ... supporting mechanism 28b ... guide roller
28c, 28c ': braking roller 28e: movable support
28f… pin

Claims (1)

(1) A wire supply mechanism main body that rewinds a wound coil fiber wire from a wire spool and guides a wire supplied by the wire supply mechanism body. A movable base provided with a wire guide portion to be moved and installed to be able to advance and retreat in a fixed direction; and coaxially disposed in the traveling direction of the movable base, and gripping a distal end portion of the wire rod guided by the wire guide portion. A rotating drum having a wire chuck and a mandrel for winding a wire whose tip is gripped by the wire chuck on a coil filament; and rotating the rotating drum intermittently to wind the wire on the coil filament on the mandrel. A timing drive mechanism, which is disposed between the tip end of the mandrel of the rotary drum and the tip of the wire guide portion of the movable table, and cuts a coil filament wound and formed on the mandrel from the wire. An apparatus for manufacturing a coil fiber for a light bulb, comprising: a coil fiber separation mechanism for separating; and a drive control mechanism for interlocking and controlling the moving and retreating of the movable table, intermittent rotation of the rotary drum, and the coil fiber separation mechanism. Wherein the wire rod supply mechanism main body comprises a wire rod feeding means for pinchingly feeding the wire rod rewinded from a wire spool, and the wire rod
Arranged to sandwich the wire fed by the feeding means
A pair of wire detection elements, one of the wire detection elements
Activates when the wire is detected, and detects the other wire.
The wire is stopped so as to stop when the element detects the wire.
A control circuit for controlling the wire feeding means;
An apparatus for manufacturing a coil filament for a light bulb, characterized by comprising a braking means for applying a predetermined tension to a wire rod passed between intelligent elements .