JP2018029197A - Ferromagnetic metal ribbon transport device and method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device, a system and a method for transporting a ferromagnetic metal ribbon, from a roller provided on a mandrel to multiple mandrels arranged around an electric coil of a carrier.SOLUTION: This system includes a device 18a for fixing the free end of a ribbon roll containing reel mandrels 12a, 12b on which ribbon rolls 11a, 11b are provided, and a ribbon holding mechanism having multiple holding elements movable between a holding position where the free end of the ribbon roll is fixed onto the reel, and an open position where the free end of the ribbon roll is free from the reel mandrel.SELECTED DRAWING: Figure 2

Description

  The present invention relates to the handling of ferromagnetic metal ribbons. More particularly, it relates to the transport of a ferromagnetic metal ribbon from a roll provided on a mandrel to another mandrel. More particularly, it relates to the transport of a ferromagnetic metal ribbon from a roll provided on a mandrel to another mandrel arranged around a plurality of electrical coils of a transformer. ing.

  Iron-based amorphous alloys are required for their mild magnetic properties in the creation of magnetic cores. They are produced by continuous rapid solidification of a stream of molten alloy mass on a cooled surface moving at a speed reaching 100 km per hour and can be cut to different lengths Yields very thin ductile metal ribbons of various widths. The magnetic core is then manufactured either by winding a continuous ribbon or by laminating multiple lengths of ribbon. However, residual mechanical stress is introduced into the alloy during casting, and stress applied later by bending or stacking the ribbon is applied. These stresses detract from the magnetic properties and, therefore, must be removed from the ribbon, sometimes at the same time that the ribbon is cored by final deformation, i.e. applied at least in part. Stress relief from the amorphous metal ribbon is generally accomplished by annealing the metal in an oven for a predetermined time at an elevated temperature. Also, the magnetic properties are improved during the furnace annealing process if a magnetic saturation region or tensile strength is applied along the longitudinal axis of the ribbon. Unfortunately, furnace annealing causes the alloy to become brittle, making it impossible to cut and difficult to handle. Embrittlement of iron-based amorphous alloys introduced by furnace annealing has been a problem that has been rectified over a long period of time.

  A method for creating a distribution transformer kernel with a ferromagnetic metal ribbon is disclosed in US Pat. No. 5,566,443 to Allan et al. The transformer kernel in this document is related to the arrangement in the transformer, which comprises an electrical coil, a core, and a plurality of elements to support them together. There are no containers and surrounding accessories. In this patent, a number of electrical coils are pre-formed, each having a portion with a circular fan shape. The pre-formed coils are then combined with each other, their parts combined to form a circular limb, and a continuous ferromagnetic material to form a magnetic core An amorphous alloy ribbon is rolled up on a circular hollow mandrel placed around a circular edge to create a circular core. Prior to being rolled up, the amorphous metal ribbon was previously furnace annealed below the saturation magnetic region on a second circular mandrel having the same outer diameter as the circular hollow mandrel, and thus Requires the transport of annealed ribbons between multiple mandrels.

  The rolling-up-after-annealing of an amorphous metal circular core, while seemingly simple, leaves a difficult task. The fact that the ribbon becomes brittle following the furnace annealing process becomes more inconvenient when it needs to be rolled up again on the second mandrel. US Pat. No. 4,668,309 to Silgalis et al. Is demonstrated in Table 2 of that patent, where a nuclear amorphous ferromagnetic amorphous material weighing approximately 50 kg is furnace annealed. The metal ribbon was rewound and wound up every time at a speed of up to 0.3 meters per second, and the ribbon broke more than 60 times. Therefore, the manufacture of a circular core formed by rolling-up-after-annealing of an amorphous metal ribbon that has been previously furnace-annealed in a roll is the cause of the brittleness of the amorphous alloy. So it's not practical.

  It is believed that shorter annealing times at higher annealing temperatures result in greater ductility for amorphous metal ribbons. However, because of the limitations in heat transfer capacity within the core, there are limitations to attempts to shorten the annealing time in the furnace. Higher heat transfer forces are pulled in the path along a portion of the travel path as disclosed in U.S. Pat. Nos. 4,482,402, 4,288,260, 5,069,428, and U.S. Patent Application Publication No. US 2008/0196795. This is made possible by heat-treating a single advancing ribbon under force. Such an apparatus is an in-line ribbon annealing method. Once annealed, the ribbon is wound directly onto a reel mandrel or a transformer kernel mandrel such as that described in US Pat. No. 5,566,443. This apparatus can maintain a continuous supply of ribbons at the inlet and is provided with means to ensure continuous production of rolls either on the reel mandrel or on the converter kernel mandrel at the outlet. If so, productivity can be obtained. According to paragraph [0080] in US Patent Application Publication No. US 2008/0196795, the outlet of the disclosed in-line annealing device can comprise first and second winding spindles, as a result of which After winding the first core (or reel) on the first spindle, the ribbon is cut so that the winding of the second core (or reel) can be performed without interrupting the manufacturing process, and the ribbon on the second spindle It is possible to adapt the head part. Paragraph [0084] further states: it may be advantageous to use a magnetic spindle or a spindle with suction to fix the start of the ribbon on the spindle. However, that document does not teach or show how to implement such a continuous winding means and includes any means at the inlet to ensure continuous feeding of the ribbon. Not in.

  Accordingly, it is an object of the present invention to provide a method and apparatus that overcomes at least one disadvantage of the prior art.

According to the present invention, an apparatus is provided for securing a free end of a ribbon roll, the apparatus comprising: a reel on which a ribbon roll is provided; and
A ribbon holding mechanism having a plurality of holding elements movable between a holding position where the free end of the ribbon roll is fixed on the reel and a release position where the free end of the ribbon roll is free from the reel;
It has.

  Preferably, the reel comprises a mandrel with first and second side flanges on both sides thereof, the plurality of flanges having individual elongated grooves for receiving the individual holding elements. The plurality of retaining elements comprise individual rods pivotable with each of the first and second flanges, the plurality of rods extending toward the flanges against which the individual rods are opposed. It is pivotable between a holding position and a release position in which the individual rods are stored in the holding element slot in the flange.

In accordance with this invention, there is also provided a method for winding a severable ferromagnetic ribbon onto a mandrel, the method comprising:
a) providing a free end of the severable ferromagnetic ribbon near the mandrel;
b) injecting a current with a controllable current source in an electromagnet disposed in the mandrel to bias the free end on the mandrel, and at the same time, winding the ribbon on the mandrel; Rotating the mandrel;
c) cutting the ferromagnetic ribbon when a predetermined diameter of the ferromagnetic ribbon wound up on the mandrel is obtained;
It has.

  Preferably, in step b), the electromagnet comprises at least one conductive coil of the conversion kernel.

  Preferably, according to another preferred embodiment, in step b) the electromagnet comprises at least one conductive coil provided on the ferromagnetic yoke.

  Preferably, the ferromagnetic yoke is provided on an axis and is stored in the mandrel, and the ferromagnetic yoke includes a plurality of ring-shaped elongated grooves spaced along the axis. The plurality of elongated grooves receive the at least one conductive coil, and the at least one conductive coil circulates current injected into the coils in a staggered rotational direction between the plurality of adjacent elongated grooves. It is wound like so.

According to the invention, there is also provided an apparatus for winding a severable ferromagnetic ribbon roll, the apparatus comprising:
With mandrels;
An electromagnet disposed in the mandrel;
A controllable motor for rotating the mandrel;
A controllable current source for injecting current into the electromagnet;
The controllable current source to urge the free end of the ribbon over the mandrel while the mandrel is rotating and thereby winding the severable ferromagnetic ribbon roll onto the mandrel; A controller for controlling the controllable motor; and
A cutter for cutting the ferromagnetic ribbon when a predetermined diameter of the ferromagnetic ribbon wound up on the mandrel is obtained;
It has.

  Preferably, the electromagnet comprises at least one conductive coil of the conversion kernel.

In accordance with the present invention, an apparatus for handling and moving ferromagnetic material along a path is also provided, the apparatus comprising:
With an electromagnet;
A controllable movement system for moving the electromagnet along the path;
A controllable current source for injecting current into the electromagnet; and
A controller for controlling the controllable movement system and the controllable current source to sequentially capture, move and release the ferromagnetic material as the electromagnet moves along the path;
It has.

In accordance with the present invention, a method for handling and moving ferromagnetic material along a path is also provided, the method comprising:
a) positioning an electromagnet in proximity to the ferromagnetic material;
b) injecting current into the electromagnet to capture the ferromagnetic material;
c) moving the ferromagnetic material captured in step b) along the path; and
d) releasing the ferromagnetic material moved in step c) by stopping the step of injecting current into the electromagnet;
It has.

In accordance with the present invention, there is also provided a method for transporting a ferromagnetic ribbon from a ferromagnetic ribbon roll provided on a first reel to a first mandrel, the method comprising:
a) positioning the first reel at a first unwinding position;
b) a step of fixing the free end of the ribbon roll onto the first reel by a ribbon holding mechanism having a plurality of holding elements movable between a holding position and a release position, The free end of the ribbon roll is fixed on the first reel, and the free end of the ribbon roll is free from the first reel in the release position;
c) positioning an electromagnet near the first reel;
d) rotating the reel with the free end fixed in step b);
e) after step d), moving the plurality of holding elements from the holding position to the release position to free the free end of the ribbon, and the electromagnet to catch the free end of the ribbon Simultaneously injecting an electric current therein;
f) moving the free end captured in step e) along a path near the first mandrel in a first winding position;
g) releasing the free end of the ribbon by stopping the process of injecting current into the electromagnet, and a mandrel electromagnet disposed in the mandrel to bias the free end onto the mandrel Simultaneously injecting current with a controllable current source and rotating the mandrel to wind the ribbon onto the mandrel; and
h) when a predetermined diameter of the ferromagnetic ribbon wound up on the mandrel is obtained;
Cutting the ferromagnetic ribbon;
It has.

Preferably, the method comprises:
The method further comprises a step i) of fixing the free end of the ferromagnetic ribbon wound up on the mandrel obtained after the cutting step h) onto the ribbon roll on the mandrel.

  Preferably, according to one preferred embodiment, in step i), the fixing step comprises a second ribbon holding comprising a plurality of holding elements movable between a holding position and a release position. A step of fixing the free end of the ribbon roll on the mandrel by a mechanism, wherein the free end of the ribbon roll on the mandrel is fixed on the mandrel in the holding position; In the release position, the free end of the ribbon roll on the mandrel is free from the mandrel.

  Preferably, according to another preferred embodiment, in step i), the fixing step comprises welding the free end of the ribbon roll on the mandrel onto the ribbon roll on the mandrel. It has.

Preferably, the method comprises:
j) Between step g) and step h), placing a second mandrel at a second winding position close to the path of the ribbon between the first reel and the first mandrel;
k) Injecting current from a second controllable current source into a second mandrel electromagnet disposed in the second mandrel in step h), and the ribbon from the first reel cut in step h) Simultaneously urging the free end of the second mandrel onto the second mandrel and rotating the second mandrel to wind the ribbon onto the second mandrel;
l) removing the first mandrel from the first winding position;
m) moving the second mandrel from the second winding position to the first winding position;
n) cutting the ferromagnetic ribbon when a second predetermined diameter of the ferromagnetic ribbon wound up on the second mandrel located in the second position is obtained; and
o) repeating steps j) to n) until the reel located at the first unwinding position is empty, unwinding and winding up the ribbon roll on a plurality of mandrels;
Is further provided.

Preferably, the method comprises:
p) providing a second reel having a second ribbon roll in a second unwinding position near the path of the ribbon between the first reel and the first mandrel;
q) A free end of the second ribbon roll is fixed on the second reel by a second ribbon holding mechanism having a plurality of holding elements movable between a holding position and a release position, and the holding position Wherein the free end of the second ribbon roll is fixed on the second reel, and the free end of the second ribbon roll is free from the second reel in the release position;
r) rotating the second reel with the free end fixed in step q);
s) During the repeating step o) before the first reel is emptied, the plurality of holding elements of the second reel are moved from the holding position to the release position to Making the free end free and joining the free end of the second ribbon with the first ribbon of the first reel;
t) after step s), removing the first reel from the first unwinding position after the first reel is empty;
u) after step t), moving the second reel from the second unwinding position to the first unwinding position;
v) continuously repeating steps p) to u) so as to unwind a plurality of ribbon rolls continuously from the plurality of reels;
Is further provided.

Preferably, in step s), the bonding step is
i) injecting a current with a controllable current source in an electromagnet disposed in an attracting roller to bias the free end of the second ribbon onto the first ribbon; and
ii) after step i), welding the first and second ribbons together;
It has.

  Preferably, in step ii), the welding step is performed by a rotary welding machine provided on a shaft, and includes a plurality of conductive discs separated by a plurality of insulating spacers-discs. The conductive disc has a narrow tip protruding outward from the shaft, and the plurality of conductive discs are electrically connected so that current magnetic poles alternate between adjacent conductive discs. The leading ends of the plurality of conductive disks are pressed against the first and second ribbons.

Preferably, the method comprises:
AA) positioning the electromagnet of step c) near the ribbon debris caused by the ribbon breakage between the first reel and the first mandrel;
BB) injecting current into the electromagnet of step c) to catch the debris;
CC) moving the waste captured in step BB) to a disposal site; and
DD) releasing the debris at the disposal site by stopping the step of injecting current into the electromagnet of step c);
Is further provided.

In accordance with the present invention, there is also provided a system for transporting the ferromagnetic ribbon from the ferromagnetic ribbon roll provided on the first reel to the first mandrel, the system comprising:
A first positioning system for positioning the first reel in a first unwinding position;
A plurality of holding elements movable between a holding position and a release position, wherein a free end of the ribbon roll is fixed on the first reel in the holding position, and the ribbon in the release position; A first ribbon holding mechanism, wherein the free end of the roll is free from the first reel;
A first electromagnet;
A controllable movement system for moving the first electromagnet along the path;
A first controllable current source for injecting current into the first electromagnet;
A first controller for controlling the controllable movement system and the controllable current source to sequentially capture, move and release the ribbon as the first electromagnet moves along the path;
A first controllable motor for rotating the first reel;
A first movement system for moving the plurality of holding elements from the holding position to the release position so as to free the free end of the ribbon;
Current is injected into the first electromagnet to catch the free end of the ribbon and to move the plurality of holding elements while the first reel rotates to free the free end of the ribbon. A second controller for controlling the first movement system, the first controllable current source, and the first controllable motor for simultaneous movement from the holding position to the release position;
A second electromagnet disposed in the first mandrel;
A second controllable motor for rotating the first mandrel;
A second controllable current source for injecting current into the second electromagnet;
Urging the free end of the ribbon roll while the first mandrel rotates and thereby the severable ferromagnetic ribbon roll is wound onto the first mandrel;
A third controller for controlling the second controllable current source and the second controllable motor; and
A cutter for cutting the ferromagnetic ribbon when a predetermined diameter of the ferromagnetic ribbon wound up on the first mandrel is obtained;
It has.

  Preferably, the system further comprises a fixing device for fixing the free end of the ferromagnetic ribbon wound up on the mandrel obtained after cutting by the cutter on the ribbon on the mandrel. I have.

  Preferably, according to one preferred embodiment, the fixing device comprises a second ribbon holding mechanism having a plurality of holding elements movable between a holding position and a release position, In the holding position, the free end of the ribbon roll on the mandrel is fixed on the mandrel, and in the release position, the free end of the ribbon roll on the mandrel is free from the mandrel.

  Preferably, according to another preferred embodiment, the fixing device comprises a welder for welding the free end of the ribbon roll on the mandrel onto the ribbon roll on the mandrel. .

Preferably, the system is:
A second positioning system for positioning a second mandrel between the second winding position close to the path of the ribbon between the first reel and the first mandrel and the first winding position;
A third electromagnet disposed in the second mandrel;
A third controllable motor for rotating the second mandrel;
A third controllable current source for injecting current into the third electromagnet;
The third control to bias the free end of the ribbon roll onto the second mandrel while the second mandrel rotates and thereby winds the severable ferromagnetic ribbon roll onto the second mandrel. A fourth controller for controlling the possible current source and the third controllable motor;
Is further provided.

Preferably, the system is:
A second ribbon roll is provided between the second unwinding position near the path of the ribbon between the first reel and the first mandrel and the first unwinding position. A third positioning system for positioning the reel;
A plurality of holding elements movable between a holding position and a release position, wherein the free end of the second ribbon roll is fixed on the second reel in the holding position; A second ribbon holding mechanism, wherein the free end of the second ribbon roll is free from the second reel;
A fourth controllable motor for rotating the second reel;
A second movement system for moving the plurality of holding elements from the holding position to the release position to free the free end of the ribbon;
The second moving system and the second moving system to simultaneously move the plurality of holding elements from the holding position to the release position while the second reel is rotating to free the free end of the ribbon; A fifth controller for controlling a fourth controllable motor;
A fourth electromagnet disposed in the attracting roller;
A fifth controllable motor for rotating the attraction roller;
A fourth controllable current source for injecting current into the fourth electromagnet;
A rotary welder for welding the first and second ribbons together; and
The fourth controllable current source and the fifth control so as to bias the free end of the second ribbon and the first ribbon onto the pulling roller and weld the first and second ribbons together. A possible motor, and a sixth controller for controlling the rotary welder;
Is further provided.

  Preferably, the rotary welding machine includes a plurality of conductive disks provided on a shaft and separated by a plurality of insulating spacers-disks, each conductive disk being separated from the shaft. Having a narrow tip projecting outwardly, the plurality of conductive disks are electrically connected to exchange current poles between adjacent conductive disks, and the plurality of conductive circles; The front end of the plate is pressed against the first and second ribbons.

FIG. 1 is a perspective view of a transformer kernel without a ferromagnetic metal ribbon wound on a transformer kernel mandrel. FIG. 2 is a schematic diagram of an automated system for continuously winding a ferromagnetic metal ribbon on a plurality of transformer kernel mandrels according to a preferred embodiment of the present invention. FIG. 3 is a schematic diagram of an automated system for continuously winding a ferromagnetic metal ribbon on a plurality of transformer kernel mandrels in accordance with another preferred embodiment of the present invention. . FIG. 4 is a schematic diagram of an automated system for continuously winding a ferromagnetic metal ribbon on a plurality of transformer kernel mandrels in accordance with another preferred embodiment of the present invention. . FIG. 5 is a schematic diagram of an automated system for successively winding a ferromagnetic metal ribbon on a plurality of reel mandrels in accordance with another preferred embodiment of the present invention. FIG. 6 is a schematic diagram of a control system and controlled elements according to another preferred embodiment of the present invention. FIG. 7 is a schematic diagram of one sequence of events including performing automatic ribbon splicing when the ribbon is fed from a roll where the ribbon is exhausted, according to another preferred embodiment of the present invention. It is. FIG. 8 is a schematic diagram of one sequence of events including performing automatic ribbon splicing when the ribbon is fed from a roll where the ribbon is exhausted, according to another preferred embodiment of the present invention. It is. FIG. 9 is a schematic diagram of one sequence of events including performing automatic ribbon splicing when the ribbon is fed from a roll where the ribbon is exhausted, according to another preferred embodiment of the present invention. It is. FIG. 10 is a schematic diagram of one sequence of events including performing automatic ribbon splicing when the ribbon is fed from a roll where the ribbon is exhausted, according to another preferred embodiment of the present invention. It is. FIG. 11A is a schematic diagram illustrating a securing device provided on a reel flange and used to secure a free end of a ribbon on a roll, according to another preferred embodiment of the present invention. is there. FIG. 11B is a schematic diagram illustrating a securing device provided on a reel flange and used to secure a free end of a ribbon on a roll, according to another preferred embodiment of the present invention. is there. FIG. 11C is a schematic diagram showing a securing device provided on a reel flange and used to secure a free end of a ribbon on a roll, in accordance with another preferred embodiment of the present invention. is there. FIG. 12A is an exploded view showing a detailed configuration of a pivoting finger mechanism included in a fixation device, in accordance with another preferred embodiment of the present invention. FIG. 12B is a top and bottom view showing a detailed configuration of a pivoting finger mechanism included in a fixation device, according to another preferred embodiment of the present invention. One pair. FIG. 12C is another top view showing the detailed configuration of the pivoting finger mechanism included in the fixation device, according to another preferred embodiment of the present invention. is there. FIG. 12D is another top view showing the detailed configuration of the pivoting finger mechanism included in the anchoring device, according to another preferred embodiment of the present invention. is there. FIG. 12E is a perspective view showing the detailed configuration of the pivoting finger mechanism included in the fixation device, according to another preferred embodiment of the present invention. FIG. 12F is a perspective view showing the detailed configuration of the pivoting finger mechanism included in the fixation device, in accordance with another preferred embodiment of the present invention. FIG. 12G is a perspective view showing a detailed configuration of a pivoting finger mechanism included in a fixation device, according to another preferred embodiment of the present invention. FIG. 13A is a series of events included in an opening pivoting finger mechanism for releasing the free end of a ribbon on a roll according to another preferred embodiment of the present invention. It is the schematic which shows one of these. FIG. 13B is a sequence of events included in an opening pivoting finger mechanism for releasing the free end of a ribbon on a roll, in accordance with another preferred embodiment of the present invention. It is the schematic which shows one of these. FIG. 13C is a sequence of events included in an opening pivoting finger mechanism for releasing the free end of a ribbon on a roll, in accordance with another preferred embodiment of the present invention. It is the schematic which shows one of these. FIG. 14 is a cross-sectional view of a roller equipped with an electromagnet for attracting a ferromagnetic metal ribbon in accordance with another preferred embodiment of the present invention. FIG. 15 is a cross-sectional view of a welding roller pressing two ribbon stacks against a conductive roller for welding both ribbons in accordance with another preferred embodiment of the present invention. FIG. 16A illustrates a conversion nucleus surrounded by a magnetic field line induced by a current circulating in a transformer electric coil, in accordance with another preferred embodiment of the present invention. FIG. FIG. 16B is a schematic diagram illustrating a pair of shear blades in accordance with another preferred embodiment of the present invention. FIG. 17 illustrates another empty rotation from a complete roll wound on a transformer kernel mandrel to initiate a new roll in accordance with another preferred embodiment of the present invention. FIG. 6 is a schematic diagram illustrating one of a plurality of consecutive events involved for switching an advancing ribbon to a converting kernel mandrel. FIG. 18 illustrates another empty rotation from a complete roll wound on a transformer kernel mandrel to initiate a new roll in accordance with another preferred embodiment of the present invention. FIG. 6 is a schematic diagram illustrating one of a plurality of consecutive events involved for switching an advancing ribbon to a converting kernel mandrel. FIG. 19 illustrates another empty rotation from a complete roll wound on a transformer kernel mandrel to initiate a new roll in accordance with another preferred embodiment of the present invention. FIG. 6 is a schematic diagram illustrating one of a plurality of consecutive events involved for switching an advancing ribbon to a converting kernel mandrel. FIG. 20 illustrates another empty rotation from a complete roll wound on a transformer kernel mandrel to initiate a new roll in accordance with another preferred embodiment of the present invention. FIG. 6 is a schematic diagram illustrating one of a plurality of consecutive events involved for switching an advancing ribbon to a converting kernel mandrel. FIG. 21 is another empty spinning from a complete roll wound on a reel mandrel to initiate a new roll, in accordance with another preferred embodiment of the present invention. FIG. 6 is a schematic diagram showing the switching of the advancing ribbon to a reel mandrel. FIG. 22 is in accordance with another preferred embodiment of the present invention, wherein a ferromagnetic metal ribbon is continuous over a plurality of transformer kernel mandrels provided with means for starting the system. FIG. 2 is a schematic diagram of an automated system for rolling up a machine. FIG. 23 is a schematic diagram illustrating an automated system for continuously winding a ferromagnetic metal ribbon onto a plurality of reel mandrels, provided with means for starting the system. It is.

  A plurality of different preferred objects of the present invention will now be provided.

  Therefore, the object of the present invention is fulfilled secondly for the uninterrupted ribbon supply of the trailing free end of the ferromagnetic metal ribbon unwound from the first reel mandrel where the material is exhausted. It is an object of the present invention to provide a method and apparatus that can be spliced to the leading free end of a ribbon that is launched and unwound from a reel mandrel.

  Therefore, another object of the present invention is to provide a ferromagnetic metal ribbon wound up on a roll, in order to produce a plurality of rolls continuously without interrupting the supply of the ribbon. To provide a method and apparatus that can be cut when completed and the incoming free end of the cut ribbon is engaged to initiate a new roll.

  Preferably, the ferromagnetic metal ribbon is wound up continuously on a plurality of reel mandrels.

  Preferably, the ferromagnetic metal ribbon is wound up continuously on a plurality of core mandrel.

  Preferably, the ferromagnetic metal ribbon is continuously wound on a transformer kernel mandrel.

  Referring to FIG. 1, there is shown a transformer kernel 1 somewhat similar to that disclosed in US Pat. No. 5,566,443.

  The transformer kernel 1 is provided with a hollow mandrel 2 that is free to rotate around a central limb formed by a plurality of electrical coils 3 assembled on a frame 4. . A transformer kernel mandrel 2 is rotated by a number of drive rollers 5 that are biased and distributed against the outer periphery of two flanges 6 provided at both ends of the mandrel 2. The plurality of coils 3 and the frame 4 are held stationary by means not shown in a position that avoids frictional contact with the rotating mandrel 2. Each of the plurality of drive rollers 5 has an edge that is flush with the inner walls of the plurality of flanges 6. At least one of the plurality of drive rollers 5 is mechanically connected to a shaft of a servo motor not shown. The ferromagnetic ribbon that is engaged on the transformer kernel mandrel 2 can therefore rotate the mandrel 2 using at least one of the plurality of motor driven rollers 5 on the plurality of flanges 6. It is rolled up to form a magnetic core.

  Referring to FIG. 2, the main parts of an automated system for winding a ferromagnetic metal ribbon in succession on a plurality of transformer kernel mandrels are shown. The ribbon 10 fed from a roll 11a supported on a reel mandrel 12a passes through a ribbon splicer 13 and then becomes the core of a transformer kernel 1a. It is wound up on a rotating transformer kernel mandrel 2 to form a roll 14. When the roll 14 on the rotating mandrel 2a is completed, the system operates the shear blades 16a and 17a to cut the transport ribbon 10, and a new core for the transformer kernel 1b. In order to wind up, the mechanism which winds the leading free end of the cut ribbon on the empty rotating kernel mandrel 2b is operated. The system also includes a revolving reel mandrel 12b that is filled with a roll 11b that becomes ready to relay the ribbon 10 once the reel mandrel 12a has run out of ribbon. The free end of the ribbon on the outer surface of the roll 11b is held against the roll by a securing device 18a provided on a plurality of reel flanges and splices it onto the trailing portion 20 of the ribbon exiting the reel mandrel 12a. At an appropriate moment, it is released by the peristaltic lever 19a so that it can start towards the ribbon splicer 13.

  In the apparatus shown, the ribbon 10 is being transported at a specific speed and is under a specific tensile stress. The ribbon transport speed is the drive driven by the motor biased by the rotational speed of the reel mandrel 12a or the converter kernel mandrel flange 6a via the spindle 21a driven by the motor. It is controlled by setting the rotational speed of the transformer kernel mandrel 2a via the roller 5a. Ribbon tensile stress is thus adjusted by setting the rotational torque of a mandrel located at the opposite end of the ribbon being conveyed. A filled reel mandrel usually contains enough ribbon to roll up multiple cores for multiple transformer kernels, and therefore a larger amount than the multiple cores it creates. Have. In this case, the ribbon transport speed is controlled by setting the rotational speed of the reel mandrel 12a, and the ribbon tensile stress is controlled by setting the rotational torque of the transformer kernel mandrel 2a. Is preferred. However, as the mass of roll 14 becomes larger on mandrel 2a, it becomes difficult to control the tensile stress in the ribbon when ribbon transport is achieved between two large rotating masses.

  Referring to FIG. 3, a pulling roller 22a, which is free to move vertically between two guide rollers, is added to pull the ribbon with a set force. The vertical position of the pulling roller 22a is used to set the rotation speed of the mandrel 2a so that the rotation speed is synchronized with the supply speed of the ribbon supplied by the roll 11a. The pulling force is therefore easily controlled by the pulling force set on the roller 22a having a small mass. In the setting of FIG. 3, the unwinding and winding tensile stresses are the same.

  Referring now to FIG. 4, if different unwinding and winding tensile stresses are required, the second pulling roller 22b with position sensor 23b is driven upstream from the pulling roller 22a to transport the ribbon. A capstan motor driven drive roller 24 used to set the ribbon transport speed can be added away from the pulling roller 22a. The pulling roller 22b with the position sensor 23b is therefore used to set the unwinding tensile stress and the rotation speed of the reel mandrel 12a, and the pulling roller 22a with the position sensor 23a is used for the winding tensile stress and the conversion kernel mandrel. kernel mandrel) is used by the controller to set the rotation speed of 2a.

  In addition to illustrating the continuous winding of multiple transformer kernel cores, FIG. 5 also includes means for continuously winding a roll of ribbon on multiple reel mandrels. Shows the system. Such an apparatus can be installed at the exit of the ribbon casting process or at the exit of the in-line ribbon annealing process 25. In this system, the transported ribbon 26 is rolled up to form a roll 11c on a reel mandrel 12c that also includes a ribbon securing device 18b. The fixing device 18b is engaged by a swing lever 19b to fix the free end of the subsequent ribbon on the roll 11c after the roll 11c is completed and cut by the shearing blades 16b and 17b. At the same time, the leading end of the cut ribbon is switched onto the empty reel mandrel 12d without interruption of ribbon conveyance. An in-line ribbon annealing process 25 also uses the automated splicing system described above to continuously supply unrolled ribbons from multiple rolls in succession. Has been.

  Referring now to FIG. 6, there is shown a schematic diagram of the control system. A controller 30 having a CPU and memory bank is coupled to multiple peripheral elements via multiple I / O ports to accept information status or route instructions to multiple elements. . The plurality of peripheral elements include a plurality of electrical amplifiers coupled to a plurality of servo motors to control their rotational torque or speed, with each servo motor being connected via a shaft to a spindle, roller, robot arm, buggy. Or it drives any automated rotating device in the plurality of automated systems disclosed in this invention. The plurality of peripheral elements further includes a plurality of actuators to be controlled by the controller 30. These actuators are used at a plurality of different positions in the disclosed automated systems, such as for operating a swing lever or a plurality of cutting blades. The actuators also: a plurality of spindles holding a plurality of reel mandrels; a holding means holding a plurality of transformer kernel coils-frames; holding a plurality of transformer kernel mandrels A plurality of drive rollers; and used to control the position of all other plurality of controllable movable parts disclosed in the present invention. The plurality of peripheral elements further includes speed, distance, position and light sensors from which the controller can read their measured parameters or conditions. Multiple sensors are used in the present invention to measure process status. The plurality of peripheral elements further includes a controllable current source that is used to control the plurality of electromagnets and the plurality of welders in the present invention. The controller 30 is programmed via a user interface 33. The plurality of peripheral elements can include a plurality of auxiliary controllers for performing a plurality of local tasks. A running control program located in the memory of the controller 30 is automated to roll up the ferromagnetic metal ribbon continuously on the transformer kernels or reel mandrels. It is operated by the CPU of the controller 30 to control the operation of the existing system.

  FIGS. 7-10 illustrate a number of consecutive events involved in automatically ribbon splicing when a ribbon is fed from a roll that has been exhausted. Referring first to FIG. 7, a roll 11 a on a reel mandrel 12 a provided on a motor-driven spindle 21 a is provided with a tension roller for supplying the ribbon 10 at a predetermined transport speed V and a tensile stress T. 22b and the position sensor 23b are used to unwind at the rotational speed set by the controller 30. The unrolled ribbon 10 meanders through a ribbon splicer 13 including an attracting roller 35, a conductive roller 36, a welding roller 37, and a guide roller 38. A precision distance sensor 39a, such as a laser distance sensor, aims at the outer surface of the roll 11a to measure its distance sent to the controller 30 where the roll thickness on the reel mandrel 12a is continuously measured. It has been. A reel mandrel 12b filled with a roll 11b is mounted on a spindle 21b driven by a motor, and is adjusted on the spindle so that both sides of the roll 11b are aligned with both sides of the roll 11a. A surface speed sensor 40a, such as a laser surface speed meter, continuously transports the ribbon 10 being transported downstream of the ribbon splice 13 so as to continuously monitor the ribbon transport speed being sent to the controller 30. Aimed at the surface of the. The surface speed sensor 40b is also aimed at the outer surface of the roll 11b in order to continuously monitor its outer surface rotation speed being sent to the controller 30.

  Before the reel mandrel 12a is emptied, the reel mandrel 12b enters rotation so that its rotational speed is controlled by the controller to zero the measured difference between the two surface velocities received from the two speed sensors 40a and 40b. 30. The swing lever 19a is disposed at a predetermined angle θ in the vicinity of the outer periphery of the roll 11b with respect to a straight line extending from the rotation center axis 41 of the reel mandrel 12b to the rotation center axis 42 of the attracting roller 35.

  Referring now to FIG. 8, the thickness of the roll 11a on the reel mandrel 12a is reduced to a dimension at which the splicing operation must be initiated, as determined by the controller 30 using the distance sensor 39a. ing. Accordingly, the controller 30 sends an instruction to an actuator connected to the welding roller 37 to push the welding roller at point 43 against the ribbon passing over the conductive roller 36, and the controller 30 includes a fixing device. In order to operate the swing lever 19a between the two passages 18a, an instruction is sent to the actuator connected to the swing lever 19a. The position of the fixing device is known to the controller 30 by using, for example, an optical sensor. When the fixing device 18a crosses the swing lever 19a, it is forced to open by a plurality of push pins provided on the swing lever 19a to release the ribbon free end 44 on the roll 11b. Under the action of centrifugal force and pressure exerted by stagnant air surrounding the roll surface, the ribbon free end 44 is peeled off and tangent to the outer surface of the roll closing the release angle θ from the starting point 45. Launched by the inertial force brought in the direction. The angle θ is adjusted so that the trajectory of the ribbon tip 44 is linear with the outer surface of the attracting roller 35. At the same time, the controller 30 attracts the incoming ferromagnetic metal ribbon tip 44 on the ribbon tail portion 20 being unwound from the roll 11a until the ribbon free end 44 is guided and caught under the ribbon tail portion 20 on the conductive roller 36. Therefore, the current source 46 is instructed to inject current impulses into the electromagnet disposed in the hollow portion of the attracting roller 35. At this moment, the controller 30 only cancels the rotational speed restriction of the reel mandrel 12a by the feedback position sensor 23b, maintains a low clockwise torque on the motor driven spindle 21a, and is motor driven. The rotation speed regulation feedback of the reel mandrel 12b using the spindle 21b is switched from the speed sensors 40a and 40b to the position sensor 23b.

  Referring to FIG. 9, the controller 30 sends an instruction to a current source 47 which in turn connects the welding current between the welding roller 37 and the conductive roller 36 to join both stacked ribbons. Inject. The welding current is maintained until the trailing end of the ribbon portion 20 reaches the welding point 43. This phenomenon is arranged upstream of the attracting roller 35 and is aimed on the ribbon tail portion 20 so as to detect the moment when the end of the ribbon tail portion 20 passes, that is, in the distance sensor 39a. Built, not shown, can be predicted by controller 30 using a photodetector. Next, the rotation of the reel mandrel 12a is stopped after an instruction is sent from the controller 30 to the spindle 21a driven by the motor.

  Finally, referring to FIG. 10, after the splice is completed, the empty reel mandrel 12a has been removed from the spindle 21a and the spindle position has been switched. The controller 30 sends instructions to a plurality of actuators connected to the individual spindles 21a and 21b. The position of the spindle 21a is moved to the left so as to allow the position of the spindle 21b to move up while maintaining the rotation of the reel mandrel 12b, and then the position of the spindle 21a is moved by the spindle 21b. You are lowered to the place that was previously occupied. While the roll 11b is being unwound, a new reel mandrel filled with a roll of ribbon is mounted on the spindle 21b in preparation for the next splicing operation. Thus, a continuous supply of ribbon in this apparatus is provided.

  The detailed structure and operation of the ribbon fixing device 18a are shown in FIGS. Referring to FIGS. 11A and 11B, there are shown details of a reel mandrel with a plurality of side flanges 50 and including a ribbon roll 11b. The ribbon fixing device 18a includes two pivoting finger-like mechanisms 51 that are respectively embedded in the outer periphery of the plurality of reel flanges 50 so as to fix or release the ribbon free end 44 on the surface of the roll 11b. It has. In FIG. 11A, the two pivoting fingers 52 are closed to secure the ribbon free end 44. In FIG. 11B, the two pivot fingers 52 are open and the ribbon free end 44 is released. When the two pivoting fingers 52 are open, they are in the walls of the plurality of reel flanges 50 to open a path for winding the ribbon onto the roll 11b or unwinding the ribbon from the roll 11b. It is buried in.

Referring now to FIG. 12A, the finger 60 covered by the elastic material 61 is connected to the side surface of the trunk 62 at a right angle. The fingers 60 are long enough to provide sufficient contact to hold the ribbon free end 44 when extended on the roll 11b, as shown in FIG. 11A. Referring back to FIG. 12A, the barrel 62 has a shaft 63 that extends on one side and is provided with a small elongated groove 64 near the end for receiving the snap ring 65. The shaft 63 passes through the hole 66 in the support frame 67 and beyond the other side so that a coil spring 68 and a compression washer 69 both held in place by the snap ring 65 slide on it. Is extended. The support frame 67 further has two openings 70 on either side of the hole 66, all three holes being aligned parallel to the edge 71 of the support frame 67.
Each of the plurality of openings 70 is for receiving a lubricated rotating ball 72 fixed by a plug 73 from the lower side of the support frame 67. Preferably, each plug 73 has a spherical recess for fitting on the rotating ball 72. Further, each of the plurality of openings 70 on the upper side of the support frame 67 is formed to be slightly narrow near the surface, and as a result, the rotating ball 72 protrudes from the surface without escaping. The support frame 67 also has a plurality of holes 74 for inserting a plurality of fixing screws in order to fix the assembly to the reel flange 50. Referring to FIG. 12B, the lower portion of the barrel 62 has four recesses 75 that are evenly distributed about the shaft 63. When the pivoting finger mechanism is assembled, the spring 68 is compressed and pulls the barrel 62 over the plurality of overhanging rotating balls 72, and thus the barrel on the support frame 67 by the plurality of recesses 75. A 90 ° angle stable position for 62 is provided. Referring to FIGS. 12C and 12D, the barrel 62 includes two perpendicular flat portions 76 and 77 that cooperate with a rising wall 79 provided on the support frame 67 to limit the pivot range angle to 90 °. Thus providing only two 90 ° stable angle positions for the barrel. In one stable position, it extends perpendicularly from the support base edge 71 when the finger 60 is set in the closed position, and in the other stable position, the finger 60 is set in the open position. Is linearly aligned on the support foundation when Returning to FIG. 12B, rotation of the cylinder is achieved by pushing the lever. The upper part of the barrel 62 comprises two wall portions 80 and 81 for providing a lever when a force is applied at a right angle at a distance d from the barrel pivot axis 83. In FIG. 12C, when the pivot finger is opened, a push pin 84 that is moving laterally from left to right and hitting the wall portion 80 closes the pivot finger clockwise in FIG. 12D. When it is closed and closed, the same push pin 84 that moves sideways from right to left and hits the wall portion 81 repels the pivot finger to the position that is opened counterclockwise. . As can be seen in FIGS. 12C and 12D, the only part protruding beyond the support base edge 71 is the finger 90 when set in the closed position. Preferably, the push pin 84 is surrounded by a layer of rubbery material 85 to mitigate the impact force when the pin strikes the lever.

  12E-12G illustrate the rotation of the pivot finger 52 from a perspective view. During rotation, the pivot finger 52 is exposed to axial movement loaded by a plurality of overhanging balls 72 rotating on the underside of the barrel 62 between the plurality of recesses 75. During pivoting, the finger is first moved upward by a plurality of overhanging balls 72 rotating outside the plurality of recesses 75, reaching the highest point in FIG. 12F, and then the finger is A plurality of overhanging balls 72 move downward by engaging in a plurality of next corresponding recesses 75. This upward movement of the barrel 62 allows the outer edge of the roll 11b to open before the finger 60 moves downward to make contact with the surface of the roll 11b. The finger 60 can have permanent magnet properties to force the ribbon end to peel off the roll when the ribbon is opened. The elastic material 61 covering the finger 60 comes into contact with the surface of the roll 11 b and slightly deforms under the compressive force applied by the compression spring 68. Preferably, the pivoting finger maintains a higher distance from the support frame 67 when set in the open position as shown in FIG. 12E.

  Returning to FIGS. 11A and 11B, the rising wall 68 of the support frame 67 is contoured to match the outer circular edge of the reel flange 50. The ribbon is large enough for the roll 11b of increasing diameter to allow the plurality of pivot fingers 52 to close so that the fingers can apply sufficient pressure on the roll and hold the ribbon free end 44. It is rolled up until. Referring also to FIG. 11C, each flange 50 has a plurality of flanges as the reels are rotated so that on the next pass, the levers on both cylinders are repelled and then the pins 84 are rapidly pulled up. A notch 87 is provided on the inner edge to open a passage for lowering the plurality of push pins 84 between two passes of the pivot finger. In FIG. 11A, the reel must rotate clockwise to open a plurality of closed pivot fingers 52 with a plurality of push pins 84. In FIG. 11B, the reel must rotate counterclockwise with a plurality of push pins 84 to close a plurality of open pivot fingers 52.

  13A to 13C show a plurality of successive events for releasing the ribbon free end 44 from the roll 11b. In FIG. 13A, the plurality of pivot fingers 52 are closed and the reel rotates clockwise. Two push pins 84 are provided on the swing lever 19 a provided with the pivot shaft 88. The peristaltic lever 19a is peristally moved around the center line 89 of the pivot shaft 88 by an actuator (not shown), and a plurality of push pins 84 are inserted into the plurality of notches 87 for collision with the incoming pivot finger 52. Engage. Next, in FIG. 13B, the plurality of push pins 84 press the plurality of pivot fingers 52 to release the ribbon free end 44 from the roll 11b. Next, in FIG. 13C, the plurality of pivot fingers 52 are fully opened and the ribbon free end 44 is released and fired. The events shown are counterfeit to explain how the trailing end 44 of the ribbon wound up on the roll 11b immediately after the incoming ribbon is cut can be secured. The rotation of the reel in the clockwise direction can be continued back from FIG. 13C to FIG. 13A. The position of the cut on the ribbon is related to the position of the pivot fingers during the rotation of the reel to ensure that the fingers pinch the ribbon free end 44 as shown in FIG. 13A. Determined by the controller 30.

  FIG. 14 shows an axial cut surface of the attracting roller 35. It comprises a ferromagnetic cylinder 90 provided with a plurality of bearings 91 and a plurality of flanges 92 on a shaft 93 to form a roller. Inside the hollow portion of the formed roller, a ferromagnetic yoke 94 is provided on the shaft 93, and the ferromagnetic yoke 94 is separated by a plurality of elongated grooves 96 toward the lower surface of the cylinder 90. There are teeth 95 that project outward and form a series of discs separated from the surface by small gaps 97. Each elongate groove comprises several turns of electrical conductor wound around an axis of rotation center line to form a conductive coil 98. All of the plurality of conductive coils are interconnected electrically, preferably in series, through a plurality of passages in a yoke (not shown) and have an opening 100 disposed in the shaft 93. It is connected to a pair of conductive wires 99 that extend through the outside of the roller. The electrical interconnection between the plurality of coils 98 results in alternate directions from slot to slot as indicated by a series of dots and crosses when current is injected through the plurality of conductive lines 99. It is arranged so that the entire amount of amp-turns circulates. This creates an electromagnet with a series of magnetic poles at the individual tooth edges that change between the south and north poles from tooth to tooth. A plurality of magnetic field leakage lines 101 created by a plurality of magnetic poles extend outward from the roller surface between a plurality of adjacent magnetic poles. The ferromagnetic ribbon 102 approaching this roller parallel to the rotation center axis captures a plurality of magnetic field leakage lines and is attracted by magnetic force and sticks on the surface of the cylinder 90. The magnetic attraction force loaded on the ribbon is proportional to the current intensity injected into the plurality of copper wires 99.

  Referring now to FIG. 15, there is a basic structure of a conductive roller 36 and a welding roller 37 used to join two laminated metal ribbons 105 together while passing over the conductive roller 36. It is shown. The conductive roller 36 includes a cylinder 106 which is preferably made of copper and has a predetermined thickness. The copper cylinder 106 is provided with a plurality of bearings 107 on a shaft 108 via two side flanges 109 so as to allow rotation thereof. The outer periphery of the cylinder 106 guides and supports two laminated metal ribbons 105. The rotary welding roller 37 includes a series of stacked copper disks 110 separated by insulating spacer disks. The group of stacked discs 110 and 111 has two insulating flanges each supported on a shaft 113 via a plurality of bearings 114 to allow rotation of the stacked discs. 112 is tightened. Each copper disc 110 has a narrow peripheral edge 115 protruding outward from the roller. When the welding roller 37 is pressed against a plurality of stacked ribbons 105 on the roller 36, a plurality of spaced apart copper disks 110 are distributed along the width of the plurality of stacked ribbons. Narrow contact 116 is made. Welding is then performed between the two ribbons by allowing current to flow between the plurality of stacked ribbons and the plurality of disks 110 via the copper cylinder 106. Preferably, the welding current flows between a plurality of adjacent discs 110 whose electrical polarity is changing. This current passes through a plurality of wires and through a plurality of sliding contacts (not shown) connected to an external current source provided on the axis and controlled by the controller 30. It is supplied to the disc.

Referring now to FIG. 16A, the transformer kernel 1 with its empty mandrel 2 is shown from a radial cutaway view. When a current pulse is injected into at least one of the plurality of electrical coils of the transformer by the current source 120, the plurality of excited magnetic field lines 121 are transformed into a transformer kernel mandrel when no magnetic core is present. mandrel) around 2

  Referring to FIG. 16B, two shear blades 16a and 17a are shown, each provided on a respective support member 122 and 123. The plurality of support members 122 and 123 can be moved vertically by a plurality of actuators on a plurality of guide rails (not shown) provided parallel to the reference plane 124, resulting in two shearing blades. 16a and 17a can be met close together with a very small separation gap. In order to make a precise adjustment of the gap, means not shown are provided on one of the blades to change its horizontal position. The overall arrangement 125 of the plurality of cutting blades can be moved by a plurality of actuators not shown to bring them closer to the rotating mandrel 2 when necessary. In the present invention, the ribbon is preferably cut during movement. Shearing positions blade 16a close to the lower surface of the moving ribbon, initially, and then limits blade 17a to limit the tensile stress pulses that occur in the moving ribbon during cutting. This is done by operating at a sufficient speed.

  FIGS. 17-20 show an empty rotation of the transformer kernel 1b from the complete roll 14 wound on the mandrel 2a of the transformer kernel 1a to start a new roll. A plurality of consecutive events are included that are included to switch the advancing ribbon to the mandrel 2b. Referring first to FIG. 17, a ferromagnetic metal ribbon 10 being advanced from a supply source at a predetermined speed V and tensile stress T is wound on a rotating mandrel 2a. The rotational speed of the mandrel 2a is set by the controller 30 using a plurality of motor driven rollers 5a according to a position sensor 23a connected to the pulling roller 22a. A precision distance sensor 39b, such as a laser distance sensor, is aimed at the outer surface of the roll 14 so as to measure and communicate to the controller 30 the amount of ribbon accumulated on the mandrel 2a. During this time, a transformer kernel 1b having an empty mandrel 2d is installed upstream from the winding position. A surface speed sensor 40c such as a laser surface speed meter is aimed at the surface of the ribbon 10 and continuously transmits the ribbon transport speed to the controller 30. A surface speed sensor 40 d is aimed at the surface of the mandrel 2 b and continuously transmits the surface rotation speed of the mandrel 2 b to the controller 30. Using both speed sensors, the mandrel 2b is rotated by the controller 30 using a plurality of drive rollers 5b and the rotational speed is between the surface speeds read from the two speed sensors 40c and 40d. Set to zero the calculated gap.

  Referring now to FIG. 18, the controller 30 sends instructions to the actuator that is coupled to the biasing roller 126a. The urging roller 126a is urged on the ribbon 10 being conveyed against the surface of the rotating mandrel 2b. Because of some potential inaccuracies in sensors 40c and 40d, there can be a small difference in surface velocity between ribbon 10 and mandrel 2b. Therefore, when the rotating mandrel 2b is idling, a torque limit is set on the plurality of driving rollers 5b with a value set slightly above the torque level required to work against the friction of all the plurality of rotating parts. Is loaded. Once the ribbon 10 is pushed against the mandrel 2b, the rotation of the mandrel 2b is driven by the ribbon and the surface rotation speed matches the ribbon advancement speed. Next, the shear blades 16a and 17a are passed through the separation point 128 where the conveying ribbon leaves the surface of the mandrel 2b. The blade 16a is raised between the mandrel 2b and the left portion of the coil-frame structure 129 and is positioned directly below the surface of the ribbon 10, and the blade 17a is brought into alignment with the blade 16a and onto the surface of the ribbon. During this time, the controller 30 sends instructions to an actuator connected to the welding roller 127 such as that shown in FIG. 14 to push the welding roller 127 against the outer surface of the roll 14. The welding roller 127 can also be replaced by a fragile adhesive tape dispenser.

  Referring now to FIG. 19, as soon as the target amount of the ribbon on the mandrel 2a is achieved through the distance sensor 39b, the controller 30 operates the actuator of the blade 17a to cut the ribbon. , And also using a current source 130 controlled by the controller 30, a high current impulse is injected into at least one of the plurality of electrical coils of the transformer kernel 1b. Meanwhile, the nozzle 134 embedded in the support member 122 in the lower part of the cavity 131 in the cavity 131 delimited by the mandrel 2b, the ribbon 10, both flanges 6a, and the wall part 132 of the support member 122. A vacuum is rapidly created by injecting a jet of compressed air along the Coanda profile 133 without separation. This air is supplied to the nozzle 134 by an operating valve controlled by the controller 30. The upper surface of the support member 122 may be covered with a block 135 such as Teflon to reduce friction when the ribbon is pulled down by vacuum. Since the cutting blades 16a and 17a cannot be wider than the ribbon because they will contact the rotating flange 6a, a small portion of the ribbon extending beyond the edges of the blades will be cut. May remain. Accordingly, the support member 123 can be provided with a hammer head 136 that strikes the ribbon portion just to the right of the block 135 to create a sudden pull on the trailing end of the ribbon, and remains. Destroy the uncut edges that are. Once the cut is made, the torque limit loaded on the plurality of drive rollers 5b is removed, and the feedback input used by the controller 30 to control the rotational speed of the mandrel 2b is sensor 40c and 40d. Is immediately switched to the position sensor 23a. During this time, the region of higher air pressure located on the cut ribbon tip 137 momentarily pushes it down against the surface of the mandrel 2b before it passes in front of the nozzle 134, At that moment, the ejection of air is already blocked by the controller 30 via a controlled actuation valve. Next, as shown in FIG. 16A, a generated and closed loop of magnetic field lines creates an attractive force on the ribbon tip, which is below the second created layer. Until the ribbon tip is held against the surface of the mandrel 2b, the current impulse generated by the current source 130 can be turned off by the controller 30. During this time, the last set rotational speed on the mandrel 2a is maintained by the controller 30, which sends an instruction to the current source 138 and the last ribbon on the roll 14 before the arrival of the incoming tail end. Current is injected into the welding roller 127 to weld the layers, after which the welding roller 127 is pulled apart and the rotating mandrel 2a is stopped. Next, the completed transformer kernel 1a is removed.

  Finally, referring to FIG. 20, the biasing roller 126a, the guide roller 139, and the cutting blades 16a and 17a are separated from the transformer kernel 1b by a plurality of actuators controlled by the controller 30, and the conversion kernel ( transformer kernel) 1b and corresponding coil-frame support means and drive rollers 5b slowly move to the right with actuators controlled by controller 30 while ribbon 10 is being wound on mandrel 2b. And moved. The transformer kernel 1b exchanges positions with the support means and the drive rollers 5a, which previously supported the transformer kernel 1a and also provided with a plurality of actuators. Once the positions are exchanged, the system is then ready to accept a new transformer kernel with an empty mandrel. The new transformer kernel waits in a wait state until the next replacement operation is required, thereby maintaining continuous production of multiple winding cores on multiple transformer kernel mandrels.

  The method for the continuous production of multiple winding cores on multiple transformer kernel mandrels can also be applied for winding multiple rolls of ribbon on multiple reel mandrels. Referring to FIG. 21, a configuration in which a ferromagnetic ribbon 26 is wound on a reel mandrel 12c is shown. This configuration comprises: a biasing roller 126b; a pair of shear blades 16b and 17b; a distance sensor 39b; a pair of surface velocity sensors 40c and 40d; and a pulling roller 22a with a position sensor 23a, all Are the same in a series of events that perform the same function as their corresponding elements described and shown in FIGS. 17-20, with the following differences: Yes. First, attraction of the cut ribbon tip onto the reel mandrel 12d is a high current impulse in an electromagnet similar to that shown in FIG. 13 located in the hollow portion of the spindle 21d. Is achieved by injecting The current impulse is injected by a current source 140 controlled by the controller 30. The use of a jet of air to create a vacuum under the ribbon is not necessary in this case because the magnetic pulling force is sufficient even though it can be used. Secondly, once the ribbon is cut, its trailing edge is provided on the flanges 50 of the reel mandrel 12d according to the reverse sequence of events shown in FIGS. 13A-13C. It is fixed on the roll 11c using the fixing device 18b. The plurality of pivot fingers of the fixation device 18b are in an open position, both of which are initially at a point 141 where the peristaltic lever 19b having a plurality of push pins is to be swung to repel the fingers. Waiting to close over the trailing edge of the incoming ribbon when making a pass. Also, a command to cut the ribbon is sent by the controller 30, and at that moment, the fixing device 18b passes the corner point β forward from the point 141 in order to align the fixing device 18b with the trailing end of the ribbon on the roll 11c. . Preferably, biasing roller 142 is temporarily pressed against roll 11c near point 141 by an actuator controlled by controller 30 to hold the ribbon against roll 11c until the plurality of pivot fingers are closed. .

22 and 23 are used to capture and guide the ribbon end to set up the ribbon transport system, and to remove ribbon debris that has accumulated in the ribbon transport system following ribbon rupture to clean the system. 1 shows a device with an arm. In FIG. 22, the device includes a rail 145 for supporting a small motorized buggy 146 that can move horizontally. The small buggy also has an actuator for moving the arm 147 holding the electromagnet head 148 vertically from one end. The electromagnet head 148, vertical actuator, and motor-driven buggy are all controlled by the controller 30. Other means such as a multi-axis robot arm can be employed to hold and move the electromagnet head. To set up the ribbon transport system, the electromagnet head 148 is excited and brought in the vicinity of the peristaltic lever 19a onto a ribbon roll 11b having its ribbon free end fixed on the roll by a fixing device 18a. The reel mandrel 12b is rotated slowly until the fixing device 18a releases the ribbon free end which is then captured by the electromagnet head 148 opened and excited by the swing lever 19a. Next, all the rollers around which the ribbon must meander to reach the transformer kernel mandrel 2a, ie, the reel mandrel 12c as shown in FIG. It is moved by a plurality of actuators controlled by controller 30 to provide a straight open path for unwinding and guiding the ribbon tip by moving 148 to the right. The multiple rollers shown are used as an example, and therefore any arrangement of multiple rollers in the ribbon transport system can be considered. The ribbon tip is then released onto the transformer kernel mandrel 2a (or reel mandrel 12c), during which the current source 150 controlled by the controller 30 is used to transform the transformer kernel 1a. A current is injected into at least one of the plurality of electric coils (or into the electromagnet disposed in the spindle 21c). The injected current creates a magnetic force that attracts the ribbon and winds it around the mandrel 2a (or reel mandrel 12c). The transformer kernel mandrel 2a (or reel mandrel 12c) is then slowly rotated several times to capture the ribbon free end in the second created layer in the forming roll. Finally, all of the plurality of rollers can be returned to their operating position and a transfer operation can be initiated.

  The same device can be used to reset the system if a sudden ribbon break occurs during its transport. Thus, all of the plurality of rollers and spindles in the system can be provided with means for momentarily stopping their rotation at the moment of ribbon break. Ribbon breakage can be achieved by using a plurality of light detectors located along the ribbon path and connected to the controller 30, or by one torque of a plurality of spindles or drive rollers driven by a motor. It can be detected by detecting a sudden change in rotational speed. Rapidly stopping all rotation sites prevents the ribbon from being wound on multiple freely rotating rollers. After all of the rotating parts are stopped following the break, the rollers are moved to open the passage. The ribbon portion that hangs down from the roll 11b is cut using a cutting means that is provided on the arm 147 or near roll 11b and not shown. Starting from the end of the cut, the ribbon scrap stuck in the rollers is pulled up by the electromagnet head 148, and the ribbon scrap pulled up while moving far to the right is dropped into the recycling basket 149. It is. Preferably, the transformer kernel 1a (or reel mandrel 12c) is removed, replaced with one having an empty mandrel, and the removed transformer kernel (or reel mandrel). Is sent for inspection, where it is renewed or recycled. During this time, the electromagnet head 148 is returned close to the roll 11b to catch the free end of the ribbon and the setting procedure as described above is performed again.

  While several preferred embodiments of the present invention have been described in detail herein and illustrated in the accompanying drawings, the present invention is not limited to these detailed embodiments. Various changes and improvements may be made here without departing from the scope.

While several preferred embodiments of the present invention have been described in detail herein and illustrated in the accompanying drawings, the present invention is not limited to these detailed embodiments. Various changes and improvements may be made here without departing from the scope.
The matters described in the claims at the beginning of the application are appended as they are.
[1].
A device for fixing the free end of a ribbon roll:
A reel on which a ribbon roll is provided; and
A ribbon holding mechanism having a plurality of holding elements movable between a holding position where the free end of the ribbon roll is fixed on the reel and a release position where the free end of the ribbon roll is free from the reel;
A device equipped with.
[2].
The reel includes a mandrel with first and second side flanges on both sides thereof, the plurality of flanges having individual elongated grooves for receiving the individual retaining elements; Each holding element includes individual rods pivotable with each of the first and second flanges, the plurality of rods extending to the flanges against which the individual rods are opposed; [1]. Wherein the individual rods are pivotable between release positions stored in the retaining element slots of the flanges. The device described in 1.
[3].
A method for winding a severable ferromagnetic ribbon onto a mandrel:
a) providing a free end of the severable ferromagnetic ribbon near the mandrel;
b) injecting a current with a controllable current source in an electromagnet disposed in the mandrel to bias the free end on the mandrel, and at the same time, winding the ribbon on the mandrel; Rotating the mandrel;
c) cutting the ferromagnetic ribbon when a predetermined diameter of the ferromagnetic ribbon wound up on the mandrel is obtained;
A method comprising:
[4].
In step b), the method described in [3] above, wherein the electromagnet comprises at least one conductive coil of a conversion kernel.
[5].
In step b), the electromagnet includes at least one conductive coil provided on the ferromagnetic yoke, [3]. The method described in.
[6].
In step b), a plurality of ring-shaped elongated grooves in which the ferromagnetic yoke is provided on an axis and stored in the mandrel, and the ferromagnetic yoke is spaced along the axis Wherein the plurality of elongated grooves receive the at least one conductive coil, and the at least one conductive coil has a rotational direction in which current injected into the coil is staggered between a plurality of adjacent elongated grooves. [5]. The method described in.
[7].
A device for winding a severable ferromagnetic ribbon roll:
With mandrels;
An electromagnet disposed in the mandrel;
A controllable motor for rotating the mandrel;
A controllable current source for injecting current into the electromagnet ;
The controllable current source to urge the free end of the ribbon over the mandrel while the mandrel is rotating and thereby winding the severable ferromagnetic ribbon roll onto the mandrel; A controller for controlling the controllable motor;
And
A cutter for cutting the ferromagnetic ribbon when a predetermined diameter of the ferromagnetic ribbon wound up on the mandrel is obtained;
A device equipped with.
[8].
[7]. Wherein the electromagnet comprises at least one conductive coil of a conversion kernel. The device described in 1.
[9].
[7]. Wherein the electromagnet includes at least one conductive coil provided on the ferromagnetic yoke. The device described in 1.
[10].
The ferromagnetic yoke is provided on a shaft and is stored in the mandrel, and the ferromagnetic yoke includes a plurality of ring-shaped elongated grooves spaced along the shaft, A plurality of elongated grooves receive the at least one conductive coil, and the at least one conductive coil is wound so that a current injected into the coil circulates in a staggered rotational direction between the plurality of adjacent elongated grooves. Being
[9]. The device described in 1.
[11].
A device for handling and moving ferromagnetic materials along a passageway:
With an electromagnet;
A controllable movement system for moving the electromagnet along the path;
A controllable current source for injecting current into the electromagnet; and
A controller for controlling the controllable movement system and the controllable current source to sequentially capture, move and release the ferromagnetic material as the electromagnet moves along the path;
A device equipped with.
[12].
A method for handling and moving ferromagnetic materials along a path:
a) positioning an electromagnet in proximity to the ferromagnetic material;
b) injecting current into the electromagnet to capture the ferromagnetic material;
c) moving the ferromagnetic material captured in step b) along the path; and
d) releasing the ferromagnetic material moved in step c) by stopping the step of injecting current into the electromagnet;
A method comprising:
[13].
A method for transporting a ferromagnetic ribbon from a ferromagnetic ribbon roll provided on a first reel to a first mandrel:
a) positioning the first reel at a first unwinding position;
b) a step of fixing the free end of the ribbon roll onto the first reel by a ribbon holding mechanism having a plurality of holding elements movable between a holding position and a release position, The free end of the ribbon roll is fixed on the first reel, and the free end of the ribbon roll is free from the first reel in the release position;
c) positioning an electromagnet near the first reel;
d) rotating the reel with the free end fixed in step b);
e) after step d), moving the plurality of holding elements from the holding position to the release position to free the free end of the ribbon, and the electromagnet to catch the free end of the ribbon Simultaneously injecting an electric current therein;
f) moving the free end captured in step e) along a path near the first mandrel in a first winding position;
g) releasing the free end of the ribbon by stopping the process of injecting current into the electromagnet, and a mandrel electromagnet disposed in the mandrel to bias the free end onto the mandrel Simultaneously injecting current with a controllable current source and rotating the mandrel to wind the ribbon onto the mandrel; and
h) cutting the ferromagnetic ribbon when a predetermined diameter of the ferromagnetic ribbon wound up on the mandrel is obtained;
A method comprising:
[14].
i) The method further comprises the step of fixing the free end of the ferromagnetic ribbon wound up on the mandrel obtained after the cutting step h) onto the ribbon roll on the mandrel. ]. The method described in.
[15].
In step i), the fixing step moves the free end of the ribbon roll onto the mandrel by a second ribbon holding mechanism having a plurality of holding elements movable between a holding position and a releasing position. The free end of the ribbon roll on the mandrel is fixed on the mandrel in the holding position, and the ribbon roll on the mandrel is in the release position. [14]. Wherein the free end is free from the mandrel. The method described in.
[16].
In the step i), the fixing step includes a step of welding the free end of the ribbon roll on the mandrel onto the ribbon roll on the mandrel [14]. The method described in.
[17].
j) Between step g) and step h), placing a second mandrel at a second winding position close to the path of the ribbon between the first reel and the first mandrel;
k) Injecting current from a second controllable current source into a second mandrel electromagnet disposed in the second mandrel in step h), and the ribbon from the first reel cut in step h) Simultaneously urging the free end of the second mandrel onto the second mandrel and rotating the second mandrel to wind the ribbon onto the second mandrel;
l) removing the first mandrel from the first winding position;
m) moving the second mandrel from the second winding position to the first winding position;
n) cutting the ferromagnetic ribbon when a second predetermined diameter of the ferromagnetic ribbon wound up on the second mandrel located in the second position is obtained; and
o) repeating steps j) to n) until the reel located at the first unwinding position is empty, unwinding and winding up the ribbon roll on a plurality of mandrels;
[13]. The method described in.
[18].
p) providing a second reel having a second ribbon roll in a second unwinding position near the path of the ribbon between the first reel and the first mandrel;
q) A free end of the second ribbon roll is fixed on the second reel by a second ribbon holding mechanism having a plurality of holding elements movable between a holding position and a release position, and the holding position Wherein the free end of the second ribbon roll is fixed on the second reel, and the free end of the second ribbon roll is free from the second reel in the release position;
r) rotating the second reel with the free end fixed in step q);
s) During the repeating step o) before the first reel is emptied, the plurality of holding elements of the second reel are moved from the holding position to the release position to Making the free end free and joining the free end of the second ribbon with the first ribbon of the first reel;
t) after step s), removing the first reel from the first unwinding position after the first reel is empty;
u) after step t), moving the second reel from the second unwinding position to the first unwinding position;
v) continuously repeating steps p) to u) so as to unwind a plurality of ribbon rolls continuously from the plurality of reels;
[13]. The method described in.
[19].
In step s), the joining step comprises
iii) injecting a current with a controllable current source in an electromagnet disposed in an attracting roller to bias the free end of the second ribbon onto the first ribbon; and
iv) after step i), welding the first and second ribbons together;
[18]. The method described in.
[20].
In step ii), the welding step is performed by a rotary welding machine provided on a shaft, and includes a plurality of conductive discs separated by a plurality of insulating spacers-discs, The plate has a narrow tip projecting outward from the shaft, and the plurality of conductive disks are electrically connected so that current poles alternate between adjacent conductive disks. The front ends of the plurality of conductive disks are pressed against the first and second ribbons, [19]. The method described in.
[21].
AA) positioning the electromagnet of step c) near the ribbon debris caused by the ribbon breakage between the first reel and the first mandrel;
BB) injecting current into the electromagnet of step c) to catch the debris;
CC) moving the waste captured in step BB) to a disposal site; and
DD) releasing the debris at the disposal site by stopping the step of injecting current into the electromagnet of step c);
[13]. To [20]. The method described in any one of these.
[22].
A system for transporting a ferromagnetic ribbon from a ferromagnetic ribbon roll provided on a first reel to a first mandrel:
A first positioning system for positioning the first reel in a first unwinding position;
A plurality of holding elements movable between a holding position and a release position, wherein a free end of the ribbon roll is fixed on the first reel in the holding position, and the ribbon in the release position; A first ribbon holding mechanism, wherein the free end of the roll is free from the first reel;
A first electromagnet;
A controllable movement system for moving the first electromagnet along the path;
A first controllable current source for injecting current into the first electromagnet;
A first controller for controlling the controllable movement system and the controllable current source to sequentially capture, move and release the ribbon as the first electromagnet moves along the path;
A first controllable motor for rotating the first reel;
A first movement system for moving the plurality of holding elements from the holding position to the release position so as to free the free end of the ribbon;
Current is injected into the first electromagnet to catch the free end of the ribbon and to move the plurality of holding elements while the first reel rotates to free the free end of the ribbon. A second controller for controlling the first movement system, the first controllable current source, and the first controllable motor for simultaneous movement from the holding position to the release position;
A second electromagnet disposed in the first mandrel;
A second controllable motor for rotating the first mandrel;
A second controllable current source for injecting current into the second electromagnet;
The second controllable current to urge the free end of the ribbon roll while the first mandrel rotates and thereby the severable ferromagnetic ribbon roll is wound on the first mandrel. A third controller for controlling the source and the second controllable motor; and
A cutter for cutting the ferromagnetic ribbon when a predetermined diameter of the ferromagnetic ribbon wound up on the first mandrel is obtained;
System with.
[23].
[22] The apparatus further includes a fixing device for fixing the free end of the ferromagnetic ribbon wound up on the mandrel obtained after cutting by the cutter, onto the ribbon on the mandrel. ]. The system described in
[24].
The fixing device includes a second ribbon holding mechanism having a plurality of holding elements movable between a holding position and a release position, wherein the ribbon roll on the mandrel is in the holding position. [23] above, wherein a free end is fixed on the mandrel, and in the release position, the free end of the ribbon roll on the mandrel is free from the mandrel. The system described in
[25].
The above-mentioned [23], wherein the fixing device includes a welding machine for welding the free end of the ribbon roll on the mandrel onto the ribbon roll on the mandrel. The system described in
[26].
A second positioning system for positioning a second mandrel between the second winding position close to the path of the ribbon between the first reel and the first mandrel and the first winding position;
A third electromagnet disposed in the second mandrel;
A third controllable motor for rotating the second mandrel;
A third controllable current source for injecting current into the third electromagnet;
The third control to bias the free end of the ribbon roll onto the second mandrel while the second mandrel rotates and thereby winds the severable ferromagnetic ribbon roll onto the second mandrel. A fourth controller for controlling the possible current source and the third controllable motor;
[22]. The system described in
[27].
A second ribbon roll is provided between the second unwinding position near the path of the ribbon between the first reel and the first mandrel and the first unwinding position. A third positioning system for positioning the reel;
A plurality of holding elements movable between a holding position and a release position, wherein the free end of the second ribbon roll is fixed on the second reel in the holding position; A second ribbon holding mechanism, wherein the free end of the second ribbon roll is free from the second reel;
A fourth controllable motor for rotating the second reel;
A second movement system for moving the plurality of holding elements from the holding position to the release position to free the free end of the ribbon;
The second moving system and the second moving system to simultaneously move the plurality of holding elements from the holding position to the release position while the second reel is rotating to free the free end of the ribbon; A fifth controller for controlling a fourth controllable motor;
A fourth electromagnet disposed in the attracting roller;
A fifth controllable motor for rotating the attraction roller;
A fourth controllable current source for injecting current into the fourth electromagnet;
A rotary welder for welding the first and second ribbons together; and
The fourth controllable current source and the fifth control so as to bias the free end of the second ribbon and the first ribbon onto the pulling roller and weld the first and second ribbons together. A possible motor, and a sixth controller for controlling the rotary welder;
[26]. The system described in
[28].
The rotary welder includes a plurality of conductive disks provided on a shaft and separated by a plurality of insulating spacers-discs, each conductive disk being outward from the shaft. Having a protruding narrow tip, the plurality of conductive disks are electrically connected to exchange current poles between adjacent conductive disks, and the tips of the plurality of conductive disks Are pressed against the first and second ribbons, [27]. The system described in

Claims (28)

A device for fixing the free end of a ribbon roll:
A reel on which a ribbon roll is provided; and
A ribbon holding mechanism having a plurality of holding elements movable between a holding position where the free end of the ribbon roll is fixed on the reel and a release position where the free end of the ribbon roll is free from the reel;
A device equipped with.   The reel includes a mandrel with first and second side flanges on both sides thereof, the plurality of flanges having individual elongated grooves for receiving the individual retaining elements; Each holding element includes individual rods pivotable with each of the first and second flanges, the plurality of rods extending to the flanges against which the individual rods are opposed; 2. The device according to claim 1, wherein the individual rods are pivotable between a release position stored in the retaining element slot in the flange. A method for winding a severable ferromagnetic ribbon onto a mandrel:
a) providing a free end of the severable ferromagnetic ribbon near the mandrel;
b) injecting a current with a controllable current source in an electromagnet disposed in the mandrel to bias the free end on the mandrel, and at the same time, winding the ribbon on the mandrel; Rotating the mandrel;
c) cutting the ferromagnetic ribbon when a predetermined diameter of the ferromagnetic ribbon wound up on the mandrel is obtained;
A method comprising:   4. The method according to claim 3, wherein in step b) the electromagnet comprises at least one conductive coil of a conversion kernel.   4. The method according to claim 3, wherein in step b) the electromagnet comprises at least one conductive coil provided on the ferromagnetic yoke. In step b), a plurality of ring-shaped elongated grooves in which the ferromagnetic yoke is provided on an axis and stored in the mandrel, and the ferromagnetic yoke is spaced along the axis Wherein the plurality of elongated grooves receive the at least one conductive coil, and the at least one conductive coil has a rotational direction in which current injected into the coil is staggered between a plurality of adjacent elongated grooves. Rolled to circulate,
A method according to claim 5. A device for winding a severable ferromagnetic ribbon roll:
With mandrels;
An electromagnet disposed in the mandrel;
A controllable motor for rotating the mandrel;
A controllable current source for injecting current into the electromagnet;
The controllable current source to urge the free end of the ribbon over the mandrel while the mandrel is rotating and thereby winding the severable ferromagnetic ribbon roll onto the mandrel; A controller for controlling the controllable motor; and
A cutter for cutting the ferromagnetic ribbon when a predetermined diameter of the ferromagnetic ribbon wound up on the mandrel is obtained;
A device equipped with.   8. The device according to claim 7, wherein the electromagnet comprises at least one conductive coil of a conversion kernel.   8. A device according to claim 7, wherein the electromagnet comprises at least one conductive coil provided on a ferromagnetic yoke. The ferromagnetic yoke is provided on a shaft and is stored in the mandrel, and the ferromagnetic yoke includes a plurality of ring-shaped elongated grooves spaced along the shaft, A plurality of elongated grooves receive the at least one conductive coil, and the at least one conductive coil is wound so that a current injected into the coil circulates in a staggered rotational direction between the plurality of adjacent elongated grooves. Being
Device according to claim 9. A device for handling and moving ferromagnetic materials along a passageway:
With an electromagnet;
A controllable movement system for moving the electromagnet along the path;
A controllable current source for injecting current into the electromagnet; and
A controller for controlling the controllable movement system and the controllable current source to sequentially capture, move and release the ferromagnetic material as the electromagnet moves along the path;
A device equipped with. A method for handling and moving ferromagnetic materials along a path:
a) positioning an electromagnet in proximity to the ferromagnetic material;
b) injecting current into the electromagnet to capture the ferromagnetic material;
c) moving the ferromagnetic material captured in step b) along the path; and
d) releasing the ferromagnetic material moved in step c) by stopping the step of injecting current into the electromagnet;
A method comprising: A method for transporting a ferromagnetic ribbon from a ferromagnetic ribbon roll provided on a first reel to a first mandrel:
a) positioning the first reel at a first unwinding position;
b) a step of fixing the free end of the ribbon roll onto the first reel by a ribbon holding mechanism having a plurality of holding elements movable between a holding position and a release position, The free end of the ribbon roll is fixed on the first reel, and the free end of the ribbon roll is free from the first reel in the release position;
c) positioning an electromagnet near the first reel;
d) rotating the reel with the free end fixed in step b);
e) after step d), moving the plurality of holding elements from the holding position to the release position to free the free end of the ribbon, and the electromagnet to catch the free end of the ribbon Simultaneously injecting an electric current therein;
f) moving the free end captured in step e) along a path near the first mandrel in a first winding position;
g) releasing the free end of the ribbon by stopping the process of injecting current into the electromagnet, and a mandrel electromagnet disposed in the mandrel to bias the free end onto the mandrel Simultaneously injecting current with a controllable current source and rotating the mandrel to wind the ribbon onto the mandrel; and
h) cutting the ferromagnetic ribbon when a predetermined diameter of the ferromagnetic ribbon wound up on the mandrel is obtained;
A method comprising:   The method further comprises the step of: i) fixing a free end of the ferromagnetic ribbon wound up on the mandrel obtained after the cutting step h) onto the ribbon roll on the mandrel. How to follow.   In step i), the fixing step moves the free end of the ribbon roll onto the mandrel by a second ribbon holding mechanism having a plurality of holding elements movable between a holding position and a releasing position. The free end of the ribbon roll on the mandrel is fixed on the mandrel in the holding position, and the ribbon roll on the mandrel is in the release position. 15. A method according to claim 14, wherein a free end is free from the mandrel.   15. The method according to claim 14, wherein in step i), the fixing step comprises welding the free end of the ribbon roll on the mandrel onto the ribbon roll on the mandrel. j) Between step g) and step h), placing a second mandrel at a second winding position close to the path of the ribbon between the first reel and the first mandrel;
k) Injecting current from a second controllable current source into a second mandrel electromagnet disposed in the second mandrel in step h), and the ribbon from the first reel cut in step h) Simultaneously urging the free end of the second mandrel onto the second mandrel and rotating the second mandrel to wind the ribbon onto the second mandrel;
l) removing the first mandrel from the first winding position;
m) moving the second mandrel from the second winding position to the first winding position;
n) cutting the ferromagnetic ribbon when a second predetermined diameter of the ferromagnetic ribbon wound up on the second mandrel located in the second position is obtained; and
o) repeating steps j) to n) until the reel located at the first unwinding position is empty, unwinding and winding up the ribbon roll on a plurality of mandrels;
14. The method according to claim 13, further comprising: p) providing a second reel having a second ribbon roll in a second unwinding position near the path of the ribbon between the first reel and the first mandrel;
q) A free end of the second ribbon roll is fixed on the second reel by a second ribbon holding mechanism having a plurality of holding elements movable between a holding position and a release position, and the holding position Wherein the free end of the second ribbon roll is fixed on the second reel, and the free end of the second ribbon roll is free from the second reel in the release position;
r) rotating the second reel with the free end fixed in step q);
s) During the repeating step o) before the first reel is emptied, the plurality of holding elements of the second reel are moved from the holding position to the release position to Making the free end free and joining the free end of the second ribbon with the first ribbon of the first reel;
t) after step s), removing the first reel from the first unwinding position after the first reel is empty;
u) after step t), moving the second reel from the second unwinding position to the first unwinding position;
v) continuously repeating steps p) to u) so as to unwind a plurality of ribbon rolls continuously from the plurality of reels;
14. The method according to claim 13, further comprising: In step s), the joining step comprises
iii) injecting a current with a controllable current source in an electromagnet disposed in an attracting roller to bias the free end of the second ribbon onto the first ribbon; and
iv) after step i), welding the first and second ribbons together;
19. A method according to claim 18 comprising:   In step ii), the welding step is performed by a rotary welding machine provided on a shaft, and includes a plurality of conductive discs separated by a plurality of insulating spacers-discs, and each conductive circle is provided. The plate has a narrow tip projecting outward from the shaft, and the plurality of conductive disks are electrically connected so that current poles alternate between adjacent conductive disks. The method according to claim 19, wherein the tips of a plurality of conductive disks are pressed against the first and second ribbons. AA) positioning the electromagnet of step c) near the ribbon debris caused by the ribbon breakage between the first reel and the first mandrel;
BB) injecting current into the electromagnet of step c) to catch the debris;
CC) moving the waste captured in step BB) to a disposal site; and
DD) releasing the debris at the disposal site by stopping the step of injecting current into the electromagnet of step c);
21. A method according to any one of claims 13 to 20, further comprising: A system for transporting a ferromagnetic ribbon from a ferromagnetic ribbon roll provided on a first reel to a first mandrel:
A first positioning system for positioning the first reel in a first unwinding position;
A plurality of holding elements movable between a holding position and a release position, wherein a free end of the ribbon roll is fixed on the first reel in the holding position, and the ribbon in the release position; A first ribbon holding mechanism, wherein the free end of the roll is free from the first reel;
A first electromagnet;
A controllable movement system for moving the first electromagnet along the path;
A first controllable current source for injecting current into the first electromagnet;
A first controller for controlling the controllable movement system and the controllable current source to sequentially capture, move and release the ribbon as the first electromagnet moves along the path;
A first controllable motor for rotating the first reel;
A first movement system for moving the plurality of holding elements from the holding position to the release position so as to free the free end of the ribbon;
Current is injected into the first electromagnet to catch the free end of the ribbon and to move the plurality of holding elements while the first reel rotates to free the free end of the ribbon. A second controller for controlling the first movement system, the first controllable current source, and the first controllable motor for simultaneous movement from the holding position to the release position;
A second electromagnet disposed in the first mandrel;
A second controllable motor for rotating the first mandrel;
A second controllable current source for injecting current into the second electromagnet;
The second controllable current to urge the free end of the ribbon roll while the first mandrel rotates and thereby the severable ferromagnetic ribbon roll is wound on the first mandrel. A third controller for controlling the source and the second controllable motor; and
A cutter for cutting the ferromagnetic ribbon when a predetermined diameter of the ferromagnetic ribbon wound up on the first mandrel is obtained;
System with.   23. A fixing device for fixing the free end of the ferromagnetic ribbon wound up on the mandrel, obtained after cutting by the cutter, onto the ribbon on the mandrel. The system following.   The fixing device includes a second ribbon holding mechanism having a plurality of holding elements movable between a holding position and a release position, wherein the ribbon roll on the mandrel is in the holding position. 24. A system according to claim 23, wherein a free end is fixed on the mandrel and in the release position the free end of the ribbon roll on the mandrel is free from the mandrel.   24. A system according to claim 23, wherein the securing device comprises a welder for welding the free end of the ribbon roll on the mandrel onto the ribbon roll on the mandrel. A second positioning system for positioning a second mandrel between the second winding position close to the path of the ribbon between the first reel and the first mandrel and the first winding position;
A third electromagnet disposed in the second mandrel;
A third controllable motor for rotating the second mandrel;
A third controllable current source for injecting current into the third electromagnet;
The third control to bias the free end of the ribbon roll onto the second mandrel while the second mandrel rotates and thereby winds the severable ferromagnetic ribbon roll onto the second mandrel. A fourth controller for controlling the possible current source and the third controllable motor;
The system according to claim 22, further comprising: A second ribbon roll is provided between the second unwinding position near the path of the ribbon between the first reel and the first mandrel and the first unwinding position. A third positioning system for positioning the reel;
A plurality of holding elements movable between a holding position and a release position, wherein the free end of the second ribbon roll is fixed on the second reel in the holding position; A second ribbon holding mechanism, wherein the free end of the second ribbon roll is free from the second reel;
A fourth controllable motor for rotating the second reel;
A second movement system for moving the plurality of holding elements from the holding position to the release position to free the free end of the ribbon;
The second moving system and the second moving system to simultaneously move the plurality of holding elements from the holding position to the release position while the second reel is rotating to free the free end of the ribbon; A fifth controller for controlling a fourth controllable motor;
A fourth electromagnet disposed in the attracting roller;
A fifth controllable motor for rotating the attraction roller;
A fourth controllable current source for injecting current into the fourth electromagnet;
A rotary welder for welding the first and second ribbons together; and
The fourth controllable current source and the fifth control so as to bias the free end of the second ribbon and the first ribbon onto the pulling roller and weld the first and second ribbons together. A possible motor, and a sixth controller for controlling the rotary welder;
The system according to claim 26, further comprising:   The rotary welder includes a plurality of conductive disks provided on a shaft and separated by a plurality of insulating spacers-discs, each conductive disk being outward from the shaft. Having a protruding narrow tip, the plurality of conductive disks are electrically connected to exchange current poles between adjacent conductive disks, and the tips of the plurality of conductive disks 28. The system according to claim 27, wherein is pressed against the first and second ribbons.