JPS6234128B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present application relates to an improvement of an automatic winding device for a capacitor element, and this type of automatic winding device is conventionally known in, for example, Japanese Utility Model Application Publication No. 54-39852. According to the invention, a pair of left and right conductor supply mechanisms and conductor cutting blades are provided horizontally opposite to and close to a winding shaft which is provided in a retractably rotating turret. In order to prevent the conductor supply mechanism and conductor cutting blade from coming into contact with the element wound on the tip of the winding shaft when the element is rotated in between, the turret is lowered once after winding the element, and the turret is lowered in this state. The turret was rotated backwards to move the other winding shaft to the winding position, and then the turret was raised again to its original position. Therefore, the time required to move the turret up and down is wasted,
This reduces the working efficiency, complicates the structure, and increases the size of the device.In addition, separating paper and a pair of band-shaped conductors are wound around the winding shaft, and the pair of band-shaped conductors are cut. There is no way to reliably prevent the isolation paper from coming undone before it is glued.
There were drawbacks such as the winding of the winding element becoming loose.

Therefore, the present application proposes an automatic winding device for capacitor elements that eliminates the above-mentioned drawbacks and has a mechanism that can cut the separator paper to a desired length.The following is an example of the device, which will be described in detail with drawings. Then, FIG. 1 is a front view showing the configuration of this device, and 1,
Reference numerals 2 and 3 indicate strip-shaped conductors that serve as electrodes of the capacitor, respectively, and strip-shaped separator paper 3, both of which are wound up into rolls. Reference numeral 4 denotes a separation paper supply mechanism that guides the separation paper 3 downward and clamps the leading end of the paper at appropriate times;
is a cylindrical guide tube provided with a guide groove 6 along its outer circumferential surface for guiding the separating paper 3 led out from the tip of the separating paper supply mechanism 4, and this is concentric with the front end of a turret 25, which will be described later. It is set in. This guide tube 5 has a supply mechanism 4 for the separating paper 3.
Notches 7, 7' are provided at a winding position (a, in the figure, the upper end of the perpendicular line passing through the center) facing the tip of the winding, and at a pulling position (b, the lower end of the perpendicular line, in the figure) facing diametrically. is provided. Reference numerals 8 and 8' denote holding pieces made of spring plates arranged oppositely along the inner circumferential surface of the guide tube 5, the free ends of which are bent into an L-shape and extend outward from the notches 7 and 7', respectively. It has been derived in this direction.
Reference numerals 9 and 9' denote winding shafts that are provided in a turret 25 (to be described later) so as to be freely protrusive and retractable in the axial direction so as to protrude opposite the outer positions of the notches 7 and 7'.
A two-split groove for sandwiching the separating paper 3 is provided. Reference numeral 10 denotes a tiltable paper provided at an outer position of the guide cylinder 5 so as to be freely tiltable, and whose tip extends to the vicinity of the winding position a and presses the separating paper 3 located in the guide groove 6 from the outside. Holders 11 and 11' are provided inside the guide tube 5, and cutting blades 12 and 13 cut the separating paper 3 at the notches 7 and 7', respectively, for cutting the strip conductors 1 and 2. The band-shaped conductor 1 is clamped and moved forward diagonally downward so that its tip touches the winding shaft 9 at the winding position a.
2 starts winding together with the separator paper 3 due to the rotation of the winding shaft 9, the strip-shaped conductors 1, 2
The conductor supply mechanisms 12 and 13 are arranged so that the conductor supply mechanisms 12 and 13 are approximately symmetrical with respect to the supply position of the separating paper 3, and the supply surfaces are aligned with the winding axis. It is arranged to be inclined diagonally downward so as to be oriented in the axial direction of 9. 1
4 and 15 are the conductor supply mechanisms 12 and 13, respectively.
A cutting blade 16 for cutting the band-shaped conductors 1 and 2 when they are wound up to a predetermined length at the front end position of the guide tube 5 is provided opposite the extraction position b of the guide tube 5;
A winding that prevents the element from unwinding when the winding shaft 9 equipped with an element formed by winding the separator paper 3 and the two strip conductors 1 and 2 by a half turn of the turret 25 (to be described later) reaches the extraction position b. Adhesive tape 17 with return prevention mechanism
a tape cutting blade 19 that cuts the adhesive tape 17 that has been fed out, and a tape transport mechanism 20 that carries the adhesive tape 17 cut by the cutting blade 19 to a extraction position b. , and a tape presser 21 that presses the adhesive tape 17 onto the outer periphery of the element at the extraction position b.

FIG. 2 is a side sectional view showing the driving relationship of the device of the present invention. Reference numeral 22 denotes a cylindrical turret shaft that is supported by a support member 24 fixed to a base 23 and extends in the front-rear direction. The turret 25 is fitted. This turret 25 has flange portions 2 at the front and rear ends of a cylindrical base 26.
7 and 27', respectively, and these flange parts 27 and 2
Bearing holes 28, 28, 28', 2 are provided at respective positions opposite to the winding position a and the extraction position b of 7'.
8' is bored. A support portion 29 extending forward is provided at the front end of the base portion 26 .
The guide tube 5 is integrally provided to the guide tube 9 via a mounting plate. Further, at each position on the rear outer periphery of the guide tube 5 facing the winding position a and the extraction position b, there are support pieces 30 that slidably support the winding shafts 9, 9'.
30' is provided. Reference numeral 31 denotes a rod shaft that is slidably inserted into the turret shaft 22, extends in the front-rear direction, and rotates together with the turret shaft 22; A coil spring 32 that always urges the rod shaft 31 backward with respect to the turret shaft 22 is attached to this protrusion, and the rod shaft 31 is pushed against the coil spring 32 via the arm member 34 by the operation of the electromagnetic actuator 33. temporarily advanced. A pair of upper and lower actuating arms 35, 35' are attached to the tip of the rod shaft 31, and these actuating arms 35, 35' are pushed apart in the diametrical direction of the guide tube 5 when the rod shaft 31 moves forward.
is formed in an L-shape, and the cutting blades 11 and 11' for cutting the separating paper 3 are provided at the tips thereof, respectively. 36, 36' are the bearing holes 28, 28, 2
8', 28' in a slidable manner, and have winding shafts 9, 9' supported by the support pieces 30, 30' protruding from their tips, respectively, and are rotated by a drive source at the rear. A transmission shaft 38 has pulleys 37 and 37' mounted thereon, respectively, when the transmission shaft 36 reaches the winding position a by half a rotation of the turret 25.
It is an extrusion mechanism that advances in the axial direction, and consists of a gear 39 that rotates forward and backward by a drive source, and a sleeve 40 with a rack that meshes with this gear 39 and moves back and forth.
Reference numeral 41 denotes a retraction mechanism for engaging the rear end of the transmission shaft 36' and retracting it in the axial direction when the transmission shaft 36 reaches the extraction position b by half a rotation of the turret 25;
A gear 42 that rotates forward and backward by a drive source, and a sleeve 43 with a rack that meshes with this gear 42 and moves back and forth.
The extrusion mechanism 38 and the retraction mechanism 41 described above are both installed within the support member 24. 44 is a drive pulley for the turret shaft 22.

Next, the operation of the present application will be explained. FIG. 1 shows that the separating paper 3 is led out from the tip of the supply mechanism 4, is engaged in the guide groove 6 of the guide tube 5, and is pressed against the outer periphery of the guide tube 5 by the paper presser 10. The winding shaft 9 is moved forward by the extrusion mechanism 38 to sandwich the separator paper 3 between the grooves, and the conductor supply mechanisms 12 and 13 advance obliquely downward to transfer the tips of the strip conductors 1 and 2 to the winding shaft 9. When the transmission shaft 36 is rotated by the pulley 37 from this state, the strip conductors 1 and 2 are wound together with the separator paper 3 as the winding shaft 9 rotates. . At this time, the separating paper 3 supply mechanism 4 releases the separating paper 3, and the conductor supply mechanisms 12 and 13 release the band-shaped conductors 1 and 2, respectively, and retreat. Then, when the winding shaft 9 rotates for the required amount in the protruding state and stops, the cutting blades 14 and 15 are instantaneously activated to cut the strip conductors 1 and 2. The element wound up on one winding shaft 9 in this way is pressed by the free end folded piece of one holding piece 8 and is prevented from unwinding, and in this state, the turret 25 is rotated around the turret shaft 22.
is rotated clockwise in the figure.
At this time, the paper presser 10 is temporarily tilted to allow the winding shaft 9 to pass so as not to interfere with the movement of the winding shaft 9. Since isolation paper 3 has not been cut yet,
As the turret 25 rotates, it is pulled out from the supply mechanism 4 and wound around the outer periphery of the guide tube 5. During the process in which the turret 25 rotates half a turn and the winding shaft 9 with the element stops at the extraction position b, the rod shaft 31 moves forward due to the operation of the electromagnetic actuator 33, and the actuating arms 35, 35' move outward. The separator paper 3 is instantly cut by one of the cutting blades 11.
And the turret 25 rotates 180 degrees and stops,
The winding shaft 9, which was at the winding position a, moves to the unwinding position b, and the winding shaft 9', which was at the unwinding position b, moves to the winding position a. At the extraction position b, after the cut piece of the adhesive tape 17 is adhered to the end of the winding of the element wound around the winding shaft 9 by the unwinding prevention mechanism 16, the cut piece is attached by a slight rotation of the winding shaft 9. is wrapped around the outer periphery of the element at least once or more,
Unwinding of the element is prevented. Next, the winding shaft 9 that has moved to the extraction position b is retreated by the retraction mechanism 41 and retracted into the support piece 30', and at this time, the element is prevented from retreating at the front of the support piece 30' and falls. On the other hand, the winding shaft 9', which has moved to the winding position a, is moved to the extrusion mechanism 3.
8, and at this position the separator paper 3 is inserted into the groove, and in this way one capacitor element is automatically created every half rotation of the turret 25.

In addition, when the separating paper 3 is cut, for example, at the position A in FIG. This length will remain on the outer peripheral surface, and this length corresponds to the winding length of the element, and this length can be arbitrarily set by the operation of the electromagnetic actuator 33.

As described above, according to the present application, there is no need to move the turret in the vertical direction as in conventional devices, so the length structure is simplified, and the time required for vertical movement is reduced to allow automatic winding of the element. It can be used effectively and is suitable for mass production, and since the turret is equipped with a cutting blade for cutting the separator paper, the pull-out length of the separator paper can be set arbitrarily, making it possible to manufacture elements with different winding lengths. Further, according to the present application, the winding can be attached to the inner circumferential surface of the guide tube, and the free end is bent into an L shape, and the folded piece is exposed to the notch. A holding piece made of a spring plate facing the take-up shaft is provided, so that the take-up shaft can easily hold the separator paper and
After the pair of band-shaped conductors are wound up and their rotation stops, the winding state is elastically maintained by the unwinding prevention mechanism of the winding element until the final winding of the separator paper. There is no risk that the winding state will loosen during rotation of the turret shaft, and there is an advantage that highly accurate winding elements can be mass-produced.

[Brief explanation of the drawing]

The drawings show an embodiment of the present application, and FIG. 1 is a front configuration diagram of the device, and FIG. 2 is a side sectional view showing the driving relationship of the device. In the figure, 1 and 2 are strip-shaped conductors, 3 is a strip-shaped isolation paper, 4 is an isolation paper supply mechanism, 5 is a guide cylinder, 9 and 9' are winding shafts, 10 is a paper presser, 11 and 11' are cutting blades, 1
2, 13 are conductor supply mechanisms, 14, 15 are conductor cutting blades, 16 are unwinding prevention mechanisms, 25 are turrets, 3
3 is an electromagnetic operating body.

Claims (1)

[Claims] 1. A turret that rotates intermittently has a notch,
and a guide tube that guides the separating paper on the outer periphery, a winding shaft that is movable in the axial direction and is rotated and opposite to the notch position on the outer circumferential surface of the guide tube when the guide tube is protruded; The separating paper cutting blade is attached to the inner circumferential surface of the guide cylinder, and the free end is bent into an L shape, and the folded piece faces the notch and faces the winding shaft. a holding member made of a spring plate, and a separating paper feeding mechanism that guides the separating paper around the turret and leads it to the winding shaft;
A pair of conductor supply mechanisms are located on the left and right sides of the turret and move back and forth to guide the strip conductor diagonally and supply it to the winding shaft, a pair of cutting blades for the strip conductor, and a winding mechanism that operates when the turret stops. It is equipped with a mechanism for preventing the element from unwinding, a tiltable paper presser that presses the separator paper against the outer peripheral surface of the guide tube, and an operating mechanism that operates the separator paper cutting blade while the turret is rotating. An automatic winding device for a capacitor element, characterized in that: 2. A notch, a winding shaft, a cutting blade for separating paper,
2 facing the holding piece in the diametrical direction of the turret.
Each feeding mechanism, a pair of cutting blades for the strip conductor, and a paper presser are provided on one side facing each other in the diametrical direction around the turret, and an unwinding prevention mechanism is provided on the other side. An automatic winding device for a capacitor element according to claim 1, comprising: 3. The automatic winding device for a capacitor element according to claim 1 or 2, wherein the operating mechanism comprises an electromagnetic operating body. 4 Claim 1 in which the guide tube is cylindrical
3. An automatic winding device for a capacitor element according to item 2, item 2, or item 3.