EP0431963A2 - Vorrichtung und Verfahren zum Langsschneiden eines amorphen Metallfilms - Google Patents

Vorrichtung und Verfahren zum Langsschneiden eines amorphen Metallfilms Download PDF

Info

Publication number
EP0431963A2
EP0431963A2 EP90313315A EP90313315A EP0431963A2 EP 0431963 A2 EP0431963 A2 EP 0431963A2 EP 90313315 A EP90313315 A EP 90313315A EP 90313315 A EP90313315 A EP 90313315A EP 0431963 A2 EP0431963 A2 EP 0431963A2
Authority
EP
European Patent Office
Prior art keywords
take
reels
ribbon
metal foil
amorphous metal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP90313315A
Other languages
English (en)
French (fr)
Other versions
EP0431963A3 (en
Inventor
Hideaki C/O Mitsui Petrochemical Inc. Futasegawa
Toshio C/O Mitsui Petrochemical Inc. Hirota
Taketo C/O Mitsui Petrochemical Inc. Mimura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsui Petrochemical Industries Ltd
Original Assignee
Mitsui Petrochemical Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsui Petrochemical Industries Ltd filed Critical Mitsui Petrochemical Industries Ltd
Publication of EP0431963A2 publication Critical patent/EP0431963A2/de
Publication of EP0431963A3 publication Critical patent/EP0431963A3/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D33/00—Special measures in connection with working metal foils, e.g. gold foils
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/02—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with longitudinal slitters or perforators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/513—Modifying electric properties
    • B65H2301/5133—Removing electrostatic charge

Definitions

  • This invention relates to a method and an apparatus for splitting a broad roll of amorphous metal foil (here-inafter referred to as original roll) fed from a reel into a plurality of narrow ribbon tapes and taking them up on so many different reels.
  • original roll amorphous metal foil
  • Amorphous alloy foil is normally produced in the form of a broad roll, which is then split into a number of narrow ribbon tapes before they are used for preparing, for instance, cores of choke coils and other applications.
  • An original roll is normally cut into narrow tapes by using rotary cutters made of hard metal or high speed steel, following a process as described below.
  • a reel that carries an original roll (hereinafter referred to original roll reel) is set in position so that the roll of foil is unwound and fed as the original roll reel is driven to rotate. Then, the original roll is split into a number of narrow ribbons, which are taken up on take-up reels arranged in parallel on a common rotary shaft except for those made form marginal areas of the original roll.
  • the ribbon tapes made from marginal portions of the original roll are randomly taken up on a paper cylinder and thrown away as trash.
  • a roll of amorphous metal foil does not evenly proceed and can meander as it is fed from a reel.
  • an original roll of amorphous metal foil if cut, often shows an uneven cross section which is thick at the middle and loses its thickness as it reaches the lateral edges.
  • a roll of amorphous metal foil having such a cross section can easily take a winding course when it is fed from a reel so that it can be cut slantly or zigzag and sometimes it may not be cut at all when its course is moved away from the cutters.
  • the table below shows for comparison the irregularities of thickness of an amorphous metal foil, a copper foil and a plastic film.
  • a slackened original roll can be easily undulated and meander so that it is subjected to the above described problems, whereas a too tightly tensioned original roll can slip on the cutters leaving the cutters idly running under it.
  • the operation of splitting the original roll of amorphous metal foil with cutters should be synchronized with the operation of feeding it to the cutters.
  • This by turn requires synchronized operation of the drive motors of the cutters and the original roll or those of the cutters and the pinch rolls for pulling the amorphous metal foil from the original roll.
  • fine control of the two motors is needed in order to secure their synchronized operation. Such synchronization is very difficult when the motors are manually operated.
  • the rate at which the amorphous metal foil is fed from the original roll decreases as the volume of the original roll is reduced in the course of cutting operation to increase the tension applied to the amorphous metal foil. Therefore, it is desirable that the drive motor of the original roll reel is controlled as a function of the volume of the original roll left on the original roll reel.
  • the force applied to the take-up reels arranged on a common rotary shaft is varied depending on the location of the reels, leading to imbalance of the force applied to the reels that can results in unintentionally broken ribbon tapes.
  • Such trouble of broken ribbon tapes can occur particularly when the amorphous metal foil is fed and split at a high rate of more than 50 m/min.
  • a ribbon tape of amorphous metal foil that has been loosely taken up by a take-up reel can be tightened on the reel when it is pulled by external force. Therefore, when such a loosely wound ribbon tape is taken out from the reel for manufacturing choke coil cores, it would not come out from the reel at a constant rate so that the operation of manufacturing choke coil cores can be obstructed and defective products can appear at a relatively high rate.
  • the rate of splitting an original roll cannot be made greater than 100 to 200 m/min because a rate beyond that can result in unintentionally broken tapes and inevitably interrupted operation to reduce the efficiency of the overall operation.
  • the randomly taken up ribbon takes are simply thrown away as trash to further reduce the efficiency of the operation.
  • a second object of the invention is to provide a method for controlling the rate of rotation of the drive motor for feeding the original roll as a function of the volume of the original roll left on the original roll reel.
  • a third object of the invention is to provide a method for efficiently splitting an original roll without requiring any particular operation for handling defective ribbon tapes as well as an apparatus for carrying out the method.
  • a fourth object of the invention is to provide a method for ensuring an equal level of tension to be applied to the take-up reels of produced ribbon tapes as well as an apparatus for carrying out the method.
  • the first object of the invention is achieved by providing a method of preventing meandering motion of an original roll by means of a specifically designed apparatus and of operating the cutter drive motor and the original roll feeding drive motor with a constant ratio of rotation.
  • a method of splitting a broad roll of amorphous metal foil fed from a foil feeder reel into a plurality of ribbon tapes by rotary cutters using a sensor for detecting the lateral edges of the roll and a pair of rollers wherein a meander-preventive device is provided for preventing meandering motion of the amorphous metal foil by modifying the angle formed by the rollers according to the output signal from the sensor and the drive motor for driving the rotary cutters and the drive motor for feeding amorphous metal foil are operated with a constant ratio of rotation.
  • any meandering motion of a roll of amorphous metal foil fed from a foil feeder reel due to an irregular thickness and irregular lateral edges of the foil can be corrected so that the foil is always rectangularly applied to the cutters at a predetermined position.
  • the rate of rotation of the drive motor for feeding amorphous metal foil is automatically adjusted to maintain a given ratio of rotation relative to the rate of rotation of the drive motor for driving the rotary cutters, the foil does not show any lack of tension or any excessive tension even during the rise time required for the foil feeder reel to reach a constant rate of rotation from the start of motion.
  • the second object of the invention is achieved by providing a method of controlling the drive motor for feeding amorphous metal foil by detecting the displacement of a dancer roll arranged between the foil feeder reel and the rotary cutters in such a manner that it is firmly kept in contact with the amorphous metal foil and moves back and forth as a function of the tension of the amorphous metal foil.
  • the dancer roll comes forward (downward in Fig. 1) when the amorphous metal foil becomes loose between the foil feeder reel and the rotary cutters and the displacement of the dancer roll causes to reduce the rate of rotation of the drive motor for feeding amorphous metal foil and hence the rate of feeding the foil.
  • the dancer roll moves backward (upward in Fig. 1) when the amorphous metal foil becomes too tight between the foil feeder reel and the rotary cutters and the displacement of the dancer roll causes to increase the rate of rotation of the dancer roll for feeding amorphous metal foil and hence the rate of feeding the foil.
  • the rate of rotation of the drive motor for feeding amorphous metal foil is modified as a function of the volume of amorphous metal foil on the foil feeder reel and hence the amorphous metal foil is fed to the rotary cutters with a same level of tension without becoming too loose or too tight.
  • the displacement may be converted into an electric signal that alters the voltage applied to or the resistance connected to the drive motor to increase or decrease the rate of rotation of the motor appropriately whenever the dancer roll is displaced from its normal position.
  • An alternative method for achieving the second object of the invention consists in detecting the volume of amorphous metal foil remaining on the foil feeder reel by means of a sensor for detecting the volume and controlling the drive motor for feeding amorphous metal foil as a function of the detected volume.
  • the sensor for detecting the volume of amorphous metal foil remained on the foil feeder reel may comprise, for instance, a spindle which is kept in contact with the outer surface of the amorphous metal foil on the foil feeder reel and radially moves back and forth depending on the volume of amorphous metal foil remaining on the foil feeder reel so that the displacement of the spindle is converted into an electric signal that alters the voltage applied to or the resistance connected to the drive motor to increase or decrease the rate of rotation of the motor appropriately.
  • it may be replaced by any known mechanical, electric, optical and/or ultrasonic sensing means.
  • the rate of rotation of the drive motor for feeding amorphous metal foil is low when a large volume of amorphous metal foil is left on the foil feeder reel and increases as the volume of amorphous metal foil decreases on the foil feeder reel.
  • the third object of the invention is achieved by providing a method of introducing trashy ribbon tapes produced by marginal portions of a roll of amorphous metal foil into a hard blasting pipe and blasting them by compressed air. More specifically, there is provided a method of collecting and removing trashy ribbon tapes produced by marginal portions of a roll of amorphous metal foil when the amorphous metal foil is split into ribbon tapes by means of rotary cutters, wherein said trashy ribbon tapes are introducing into a hard blasting pipe and blasted by compressed air.
  • the inventor of the present invention has discovered that ribbon tapes of amorphous metal foil are twisted and damaged if they are mixed with compressed air in a large mixer before they are introduced into a blasting pipe so that they may become even more brittle and easily broken to pieces as they pass through the blasting pipe.
  • An apparatus for carrying out the method comprises an ejector for collecting trashy ribbon tapes produced during the operation of splitting a roll of amorphous metal foil by way of a collector pipe, a mixer for mixing the trashy ribbon tapes collected by the ejector with compressed air and a hard blasting pipe connected to the mixer.
  • trashy ribbon tapes from two lateral marginal portions of a roll are preferably collected and introduced into a single mixer and blasted in a blasting pipe.
  • trashy ribbon tapes form two lateral marginal portions of a roll are collected together, they will collide against one another and be damaged even more fiercely so that the operation of blasting the tapes may be carried out more efficiently and effectively while a single mixer and a single blasting pipe can be commonly used for trashy ribbon tapes from two lateral marginal portions to simplify the overall configuration of the system of blasting tapes.
  • the maximum rate of operation of splitting a roll of amorphous metal foil was 80 m/min, whereas the rate was raised to 200 m/min by installing a mixer for collecting ribbon tapes from the two lateral marginal portions of the roll.
  • a blasting pipe, an ejector and a mixer to be used for the purpose of a method and an apparatus according to the present invention may be made of any hard and strong material. Feasible candidates for these components include metal pipes such as iron pipes, stainless steel pipes, aluminum pipes or steel pipes, plastic pipes such as FRP pipes and tempered glass pipes.
  • a blasting pipe should be longer than 5 cm and have an inner diameter between 5 and 50 mm. Preferably, it has an inner diameter between 10 and 30 mm and is as long as somewhere between 30 and 200 cm.
  • the ejector may be arranged downstream relative to the blasting pipe, it is preferably arranged upstream relative to the pipe and the mixer, if the latter is installed, and within a guide pipe having an inlet port open for the lateral marginal portions of the roll of amorphous metal foil.
  • the ejector is provided with a neck portion having a reduced diameter. While the inner diameter of the neck portion should be larger than the width of a ribbon tape, an excessively large diameter can reduce the force of suctioning ribbon tapes.
  • the inner diameter of the neck portion is between 3 and 30 mm and preferably between 5 and 20 mm.
  • the pressure of compressed air introduced into the ejector is related to the rate of ribbon tapes passing through the ejector, the width of ribbon tapes, the inner diameter of the neck portion of the ejector and the inner diameter and the length of the blasting pipe, it is should be greater than 3 kg/cm2 and preferably it is between 5 and 10 kg/cm2.
  • the velocity and the rate of compressed air passing through the blasting pipe are respectively between 20 and 40 m/sec and between 200 and 600 kl/min.
  • the angle formed by the two guide pipes may be between 5 and 120°, although long guide pipes are required if the angle is too small and a too large angle results in collision of two gas flows coming from the two guide pipes to reduce the force to send ribbon tapes into the blasting pipe. Therefore, the incident angle is preferably between 30 and 90°.
  • a method and an apparatus for achieving the fourth object of the invention is intended to rotatably arrange a plurality of take-up reels on common rotary shafts and loosely hold them by holding means so that the take-up reels on any of the common rotary shafts become idle on it whenever the tension applied to ribbon tapes on them exceeds a threshold value.
  • a method and an apparatus for separately taking up individual ribbon tapes produced by splitting a broad roll of amorphous metal foil by take-up reels arranged zigzag and driven by respective motors are characterized by that the take-up reels are rotatably arranged on common shafts and held by holding means in such a manner that they become loose whenever the tension applied to the ribbon tapes on them exceeds a threshold value.
  • the ribbon tapes produced by splitting a broad roll of amorphous metal foil are alternately taken up by upper and lower take-up reels to avoid and friction between them.
  • the tensions applied to the ribbon tapes may vary from one another, causing differences to take place in the rate of rotation of the take-up reels, those take-up reels carrying ribbon tapes under high tension becomes loosely held by holding means so that all the ribbon tapes show a substantially equal tension as they are taken up by the take-up reels.
  • Each of the holding means to be used for the purpose of the above method and apparatus may be realized in the form of a layered and ring-shaped sheet made of a were-resistive material having a low coefficient of friction and tightly held either between two adjacent reels or at a lateral side of a reel by a pair of keep plates fitted to the related rotary shaft.
  • Materials that may be used for them include polytetrafluoroethylene (trade name: Teflon) filled with glass fiber, graphite, carbon, bronze, molybdenum disulfide or a compound of any of them and super high molecular weight polyethylene (trade name: Hyzex Million).
  • Teflon polytetrafluoroethylene
  • the layered ring-shaped sheet may be coated with a material selected from those listed above.
  • the layered ring-shaped sheet may be replaced by a sleeve to be fitted between the take-up reel and the rotary shaft, the sleeve having a inner or outer peripheral surface having a large coefficient of friction.
  • the layered ring-shaped sheet may be replaced by a piece made of a material having a large coefficient of friction to be fitted to at least either the take-up reel or the rotary shaft.
  • a ring-shaped sheet as described above When a ring-shaped sheet as described above is arranged between two adjacent reels, they may smoothly slide relative to each other if more than one such sheets are provided.
  • the sheets arranged at a same spot may be those made of either a same material or different materials.
  • a composite sheet prepared by bonding a rubber sheet and a polytetrafluoroethylene sheet containing glass fiber by using a piece of double side adhesive tape is particularly preferable when a pair of such composite sheets are put together with their rubber sheet sides facing outward and disposed between two adjacent reels so that they are in contact with the take-up reels.
  • the effect of the composite sheets will be significantly enhanced when more than one pieces glass cloth impregnated with polytetrafluoroethylene dispersed from the composite sheets are arranged between them.
  • any of the take-up reels becomes idle when the tension applied to the ribbon tape on it is too large so that all the ribbon tapes may have an equal level of tension.
  • the rate at which the take-up reels take up ribbon tapes increases and therefore the tension applied to each of the tapes also increases as the reels come to carry a large volume of ribbon tapes, leading to a high frequency of idly running reels.
  • This problem is resolved by providing an arrangement with which the take-up reels is held to the respective rotary shafts with an increased power as the volume of ribbon tapes they carry augments.
  • the problem can be resolved by providing keep plates that hold take-up reels with an increased power as the volume of ribbon tapes the reels carry augments.
  • Such an arrangement involves sensors for detecting the volume of ribbon tapes on the take-up reels and controlling the power with which the take-up reels are slidably held to the respective rotary shafts by keep plates.
  • the mechanism for pushing a keep plate against a take-up reel may be an air cylinder, a cam device that shifts the position of the keep plate by means of a lift or a device designed to shift the position of the keep plate by pivotal movement of a lever.
  • the fourth object of the invention can be alternatively achieved by providing a method and an apparatus for separately taking up individual ribbon tapes produced by splitting a broad roll of amorphous metal foil by take-up reels arranged zigzag and driven by respective motors are characterized by that each of the tape take-up reels is arranged on a separate rotary shaft and driven by a separate motor and provided with a tension sensor for detecting the tension applied to the ribbon tape and controlling the rate of rotation of the motor.
  • the rate of taking up each of the ribbon tapes is separately controlled as a function of the tension applied to the ribbon tape in order to achieve an equal level of tension for all the ribbon tapes. While the arrangement of providing each of the ribbon tapes produced by splitting a broad roll of amorphous metal foil with a take-up reel, a rotary shaft, a motor for driving the rotary shaft and a tension sensor will not arise any problem so long as the number of the ribbon tapes is small, the overall apparatus will become complex and excessively bulky if the number of ribbon tapes is large.
  • This problem can be avoided by dividing the take-up reels into two groups arranged on different levels, an upper group of reels and a lower group of reels which are fitted to respective rotary shafts, each of the reels being provided with a holding means that holds the reel to the rotary shaft in such a manner that it becomes idle on the rotary shaft whenever the tension applied to any of the ribbon tapes of the group it belongs exceeds a given threshold value as it is detected by a sensor arranged for that group of reels on a common rotary shaft driven by a rotary motor, the rate of rotation of which is also controlled by the sensor.
  • the ribbon tapes obtained by splitting a broad roll of amorphous metal foil can be taken up by simply driving the take-up reels to rotate by motors, the tapes are subjected to considerable tension as the original roll is split into ribbon tapes and eventually reaches the take-up reels because of the large torque required for driving the take-up reels in order to offset the resistance the tapes receive as they pass through the cutters and the guide rolls. Therefore, it is recommendable to arrange pinch rolls between the cutters and the take-up reels to preliminarily pull the tapes in order to alleviate the tension applied to the tapes when they are taken up by the take-up reels.
  • one or more than one tension sensors are preferably arranged between the cutters and the pinch rolls to detect the tension applied to the tapes in that area to control the drive motor for driving the pinch rolls accordingly.
  • any meandering motion of the original roll due to irregular thickness of the amorphous metal foil and uneven lateral margins of the original roll is corrected so that the original roll be placed perpendicular to the cutters at a right position.
  • the rate of feeding the original roll is auto-matically adjusted depending on the rate of splitting the original roll so that the tension applied to the original roll is maintained to a right degree even during the rise time required for the foil feeder reel to reach a constant rate of rotation from the start of motion.
  • the rate of rotation of the original roll driving motor is modified according to the degree of slackness of the original roll to adjust the feeding of the original roll so that it may be fed to the cutters under appropriate tension.
  • the rate of rotation of the drive motor for feeding the original roll is modified according to the volume of the original roll left on the foil feeder reel so that the original roll is fed at a constant rate regardless of the volume left on the foil feeder reel to avoid any excessive or lack of tension of the original roll.
  • the operation of splitting amorphous metal foil is conducted at a very elevated rate of between 100 and 200 m/min.
  • the trashy ribbon tapes produced from the lateral marginal portions of the original roll are blasted to small pieces having a relatively small volume so that they can be put into a limited number of bags for disposal and consequently the space required for storing the bags as well as the cost of waste disposal can be significantly reduced.
  • the blasted ribbon tapes may be placed between plastic or plywood sheets to form a magnetic shield panel to be used for magnetically shielding magnetic field generating cables, medical instruments or computers or for other recycling applications.
  • the tape blasting capability of the apparatus can be enhanced by mixing trashy tapes with compressed air as more scars are formed on the tapes.
  • the tape blasting capability of the apparatus can be further enhanced ribbon tapes from the two lateral marginal portions of an original roll are collected together to collide against each other and produce more scars, although a single mixer and a single blasting pipe are commonly used to simplify the configuration of the apparatus.
  • ribbon tapes obtained by splitting an original roll of amorphous metal foil are taken up by respective take-up reels with an equal level of tension and without producing any slackened ribbon tapes even the ribbon tapes have thicknesses which are irregular and different from one another.
  • Such an arrangement can effectively eliminate any unintentionally broken ribbon tapes and raise the speed of splitting operation to reduce the cost of manufacturing ribbon tapes.
  • the ribbon tapes on the take-up reels can be retracted evenly under an equal level of tension, the overall yield of the process is greatly improved.
  • the tension applied to each of the ribbon tapes produced by splitting an original roll of amorphous metal foil can be maintained to an appropriate level.
  • the tensions applied to the ribbon tapes obtained from an original roll are equalized to an appropriate level, while the apparatus is realized to a simple configuration.
  • the tension applied to each of the ribbon tapes as it is taken up by a take-up reel is alleviated to avoid any unintentional breakage or elongation of the ribbon tape.
  • Fig. 1 is a schematic illustration of an amorphous metal foil ribbon tape manufacturing apparatus according to the invention.
  • Fig. 2 is a schematic illustration of a trash ribbon tape blasting apparatus.
  • Fig. 3 is a sectional view of a principal part of a ribbon tape take-up apparatus.
  • An original roll reel 11 carries a roll of amorphous metal foil 12 having a width of between 1.00 and 213 mm and a thickness of between 24 and 26 ⁇ m at the center and between 21 and 23 ⁇ m at the lateral edges, which is gradually unwound from the original roll reel 11 and fed by way of a dancer roll 13, pinch rolls 14, anti-meander device 15 and a tension sensor to rotary cutters 17 having upper and lower edges, by which the amorphous metal foil 12 is split into a number of ribbon tapes 18, which are separated into an upper group and a lower groups and fed further by way of respective tension sensors 20, pinch rolls 21 and tension sensors 22 to take-up reels 23 that take up the respective ribbon tapes 18.
  • the original roll reel 11 is driven clockwise in Fig.
  • a DC motor 24 by way of a reduction gear 25 and the upper and lower edges of the rotary cutters 17 are also rotated clockwise by a DC motor 26 by way of a reduction gear 27.
  • the output voltage of the DC motor 26 is detected to control the voltage of the DC motor 24 by means of a controller 28 as a function of the output voltage of the DC motor 26 so that the ratio of the rate of rotation of the DC motor 24 and that of the DC motor 26 always agrees with a given value.
  • the dancer roll 13 moves upward or downward depending on the degree of slackness of the amorphous metal foil 12 and its displacement from a reference level is converted into a voltage signal.
  • the voltage signal has a positive value, whereas it shows a negative value if the dancer roll 13 is found below the reference level.
  • a positive voltage signal causes the DC motor 24 to increase its rate of rotation, whereas a negative voltage signal gives rise to an decrease in the rate of rotation of the DC motor 24.
  • the rate of rotation of the DC motor 24 is increased by a positive voltage signal, the rate of feeding the amorphous metal foil 12 augments, whereas it goes down as the rate of rotation of the DC motor 24 is decreased by a negative voltage signal.
  • the up and down movement of the pinch rolls 14 is harnessed by a powder brake 29 that operates in accordance with the tension of the amorphous metal foil 12 detected by the tension sensor 16 so that the tension is always kept constant.
  • the anti-meander device 15 consists of a light emitting unit and a light receiving unit which are juxtaposed at the lateral sides of the roll of amorphous metal foil 12 and comprises an optical sensor 31 for detecting an edge of the amorphous metal foil 12, a pair of horizontally rotatable rolls 32 and a servo-motor 33 which is actuated to horizontally rotate the rolls 32 to alter the angle between them by an output signal generated by and transmitted from the light receiving unit when the beam of light from the light emitting unit to the light receiving unit is interrupted.
  • Two anti-meander devices are provided to form a front device and a rear device.
  • Two guide pipes are arranged downstream to the cutters 17, each of the guide pipes being provided with a sensor 35 for detecting an edge of a trashy ribbon tape 18 produced from a lateral marginal portion of the amorphous metal foil 12 and a tape inlet port arranged near the cutter for the trashy ribbon tape 18 for receiving it.
  • Each of the two guide pipes 36 is connected to an ejector 37 as shown in Fig. 2.
  • the ejectors 37 are connected to a mixer 38 having a large diameter in the form of letter Y. They operate to transfer trashy ribbon tapes into the mixer 38 by compressed air blown in from an air compressor (not shown) through the respective neck portions so that the trashy ribbon tapes collide against and damage one another.
  • the compressed air supplied to the ejectors 37 may be blocked by change-over valves (not shown) according to output signals transmitted from the sensors 35. Whenever either of the sensors 35 detects the front edge of a ribbon tape 18, the change-over valves are opened to allow compressed air to flow into the ejectors from the air compressor. Likewise, the change-over valves are closed to block the compressed air from flowing into the ejectors whenever the rear edge of a ribbon ink is detected by either of the sensors 35.
  • the mixer 38 is also connected to an iron pipe 39 having a diameter smaller than its own so that entangled trashy ribbons coming out from the mixer 38 with compressed air collide against the inner wall of the iron pipe 39 and are blasted to pieces before they are received by a metal mesh dust collector 40.
  • Each of the tension sensors 20 and 22 is so designed that it vertically shifts its position depending on the degree of tension of the ribbon tape for which it is responsible and generates a voltage signal that corresponds to its positional displacement, which is then transmitted to the controller 28.
  • the controller 28 upon receiving a voltage signal either from the tension sensor 20 or 22 so controls the torque motor 42 for driving the pinch rolls or the torque motor 43 for driving the rotary shaft that the ribbon tapes restore the specified level of tension.
  • the take-up reels 23 are divided into four groups and rotatably disposed on the respective rotary shafts 44 arranged at four vertically and horizontally different positions. Take-up reels 23 on a common rotary shaft are arranged at a constant pitch. As shown in Fig. 3, a pair of ring-shaped composite sheets 47, each prepared by bonding a rubber sheet 45 and a sheet of glass fiber reinforced polytetrafluoroethylene 46 by means of a double side adhesive tape, are disposed between two adjacent take-up reels 23 with the rubber sheets 45 placed in contact with the reels. A ring-shaped sheet 48 made of glass cloth impregnated with dispersed polytetrafluoroethylene is placed between each pair of composite sheets.
  • Each of the take-up reels 23 accompanied by two pairs of composite sheets 47 and a pair of glass cloth sheets 48 are pinched from the lateral sides by a pair of keep plates 49a and 49b, of which the keep plate 49a is rigidly fitted to the rotary shaft 44 while the keep plate 49b is slidably fitted to the rotary shaft by means of a key 50.
  • the keep plate 49b is connected to an air cylinder 51 in such a manner that it can slide to the left on the rotary shaft as seen in Fig. 3 under the influence of the air cylinder 51 to further squeeze the take-up reel 23.
  • the rate of sliding motion of the keep plate 49b is controlled by a flow rate regulator valve 52 of the air cylinder 51.
  • Each of the rotary shafts 44 is also provided with a sensor 54 for detecting the volume of the ribbon tape 18 taken up by one of the take-up reels 23 it carries.
  • Fig. 1 shows only one of the sensors arranged on the rotary shafts.
  • Each of the sensors is provided with a spindle (indicated by an arrow pointing the lowest take-up reel 23 in Fig. 1) which is radially movable depending on the volume of the ribbon tape 18 carried on the take-up reel 18.
  • the displacement of the spindle is converted to a voltage signal and transmitted to the controller 28, which determines the side pressure required to be applied to the take-up reels 18 on the rotary shaft 44 as a function of the detected volume of ribbon tape by calculation using a set of empirical formulas, controls the flow rate regulator valve 52 to actuate the air cylinder 51 and move the keep plate 49b so that the side pressure being applied to the reels agrees with the calculated value.
  • the controller 28 determines the side pressure required to be applied to the take-up reels 18 on the rotary shaft 44 as a function of the detected volume of ribbon tape by calculation using a set of empirical formulas, controls the flow rate regulator valve 52 to actuate the air cylinder 51 and move the keep plate 49b so that the side pressure being applied to the reels agrees with the calculated value.
  • the controller 28 determines the side pressure required to be applied to the take-up reels 18 on the rotary shaft 44 as a function of the detected volume of ribbon tape by calculation using a set of empirical formulas, controls the flow rate regulator valve
  • the rate of splitting amorphous metal foil (the rate at which the roll of amorphous metal foil is fed to the rotary cutters) was normally between 80 and 250 m/min and advantageously between 100 and 200 m/min, which is considerably greater than the rate available with any existing apparatus.
  • a roll of amorphous metal foil was split at a rate of 200 m/min. Air was blown into the ejectors 37 under a pressure of 5 kg/cm3 and trashy ribbon tapes produced from the lateral marginal portions of the roll were taken into the guide pipes 36, mixed in the mixer 38 and then passed through the iron pipe 39 to be blasted to small pieces having a length between 1 and 50 mm. The volume of the blasted ribbon tapes was less than 1/100 of their volume before the blasting.
  • the iron pipe had an inner diameter of 28 mm and a length of 130 cm.
  • a 101.6 mm wide roll of amorphous metal foil was split by cutters to produce nine 10 mm wide ribbon tapes, which were taken up by take-up reels arrange alternately high and low, five high-positioned reels and four low-positioned reels, at a rate of 100 m/min. All the nine ribbon tapes were taken up under appropriate tension without showing any slack. No broken tapes were observed during the operation. The taken up ribbon tapes were squarely and neatly carried by the reels without showing any looseness.
  • the take-up reels were made of hard vinylchloride and had an inner width of 12 mm, an outer width of 16 mm, an core diameter of 160 and an outer diameter of 380 mm.
  • a pair of composite sheets each prepared by bonding a 0.5 mm thick rubber sheet and a 1.0 mm thick polytetrafluoroethylene sheet containing glass fiber with a double adhesive tape, and a sheet, prepared by impregnating and dispersing polytetrafluoroethylene in a 100 ⁇ m thick glass cloth and arranged between the composite sheets, were placed between two adjacent reels.
  • Each of the sheets has a form of a ring having an inner diameter of 71 mm and an outer diameter of 107 mm.
  • a 170.18 mm wide roll of amorphous metal foil was split by cutters at a rate of 200 m/min to produce sixteen 10 mm wide ribbon tapes, which were taken up by take-up reels arranged alternately at a high position and a low position and pivotally supported by two shafts located at the respective positions, each carrying eight reels.
  • the take-up reels were made of hard vinylchloride and had an inner width of 12 mm, an outer width of 16 mm, an core diameter of 160 and an outer diameter of 380 mm.
  • a pair of composite sheets each prepared by bonding a 0.5 mm thick rubber sheet and a 0.3 mm thick polytetrafluoroethylene sheet containing glass fiber with a double adhesive tape, and a sheet, prepared by impregnating and dispersing polytetrafluoroethylene in a 100 ⁇ m thick glass cloth and arranged between the composite sheets, were placed between two adjacent reels.
  • Each of the sheets has a form of a ring having an inner diameter of 71 mm and an outer diameter of 107 mm.
  • a 170.18 mm wide roll of amorphous metal foil was split by cutters at a rate of 200 m/min to produce thirty three 5 mm wide ribbon tapes, which were taken up by take-up reels arranged alternately at a high position and a low position and pivotally supported by four shafts located at the respective positions, carrying respectively eight, eight, eight and nine reels.
  • the take-up reels were made of hard vinylchloride and had an inner width of 7 mm, an outer width of 13 mm, an core diameter of 160 and an outer diameter of 380 mm.
  • a pair of composite sheets each prepared by bonding a 0.5 mm thick rubber sheet and a 0.3 mm thick polytetrafluoroethylene sheet containing glass fiber with a double adhesive tape, and a sheet, prepared by impregnating and dispersing polytetrafluoroethylene in a 100 ⁇ m thick glass cloth and arranged between the composite sheets, were placed between two adjacent reels.
  • Each of the sheets has a form of a ring having an inner diameter of 71 mm and an outer diameter of 107 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Winding Of Webs (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
EP19900313315 1989-12-08 1990-12-07 Method and apparatus for splitting amorphous metal foil Withdrawn EP0431963A3 (en)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
JP319325/89 1989-12-08
JP31932589 1989-12-08
JP253471/90 1990-09-24
JP253470/90 1990-09-24
JP25347190 1990-09-24
JP25347090 1990-09-24
JP25551390 1990-09-25
JP255513/90 1990-09-25

Publications (2)

Publication Number Publication Date
EP0431963A2 true EP0431963A2 (de) 1991-06-12
EP0431963A3 EP0431963A3 (en) 1992-05-27

Family

ID=27478297

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900313315 Withdrawn EP0431963A3 (en) 1989-12-08 1990-12-07 Method and apparatus for splitting amorphous metal foil

Country Status (4)

Country Link
EP (1) EP0431963A3 (de)
JP (1) JPH04189245A (de)
KR (1) KR910011356A (de)
CA (1) CA2031789A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2064222A2 (es) * 1992-09-18 1995-01-16 Iberica Ag Sa Prensa para trabajar materiales laminares.
WO2002076695A1 (en) * 2001-03-23 2002-10-03 Alcan International Limited Method and apparatus for trimming sheet metal
CN111573388A (zh) * 2020-05-22 2020-08-25 常州新创航空科技有限公司 一种预浸料分切机的工艺方法
CN112978463A (zh) * 2021-03-02 2021-06-18 赣州逸豪新材料股份有限公司 一种铜箔生产收卷用防割伤的限位导向装置
CN114657608A (zh) * 2022-04-14 2022-06-24 江西铜博科技有限公司 一种轻型电极铜箔生产装置

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990068716A (ko) * 1999-06-14 1999-09-06 김수호 액세서리자동성형장치
JP5517155B2 (ja) * 2010-02-15 2014-06-11 アイセル株式会社 打抜装置
KR101710440B1 (ko) * 2015-05-06 2017-02-28 재단법인 한국탄소융합기술원 탄소테이프 슬릿장치
CN113182957A (zh) * 2021-05-13 2021-07-30 安徽力幕新材料科技有限公司 一种覆膜铝箔生产加工的废料收集装置及废料再处理方法
KR102499013B1 (ko) * 2021-05-25 2023-02-13 씨앤에스엔지니어링 주식회사 광학 투명 접착제 분리 장치
CN113636397B (zh) * 2021-08-31 2022-06-28 易鸿智能装备(宜兴)有限公司 极片分切机
CN117163739B (zh) * 2023-11-02 2023-12-29 南通创佳新材料有限公司 一种基于eva发泡片材的多功能切割收卷装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR962185A (de) * 1950-06-02
DE1125259B (de) * 1956-11-06 1962-03-08 Otto Junker Fa Saumfuehrung an Besaeumscheren
US3406924A (en) * 1965-07-09 1968-10-22 Stamco Inc Apparatus for winding coils of metal strip material
FR2033927A5 (de) * 1969-02-07 1970-12-04 Du Pont
FR2289315A1 (fr) * 1974-10-28 1976-05-28 Letron Gmbh & Co Procede et installation pour transformer une grosse bobine de materiau plastique en bande en bobines plus petites pretes a etre utilisees, dans l'industrie du meuble par exemple
FR2358197A1 (fr) * 1976-07-16 1978-02-10 Grefco Appareil et procede de fragmentation selective de particules de matiere cassable
US4421283A (en) * 1981-06-23 1983-12-20 Pro-Eco Limited Strip recoiling apparatus
US4516736A (en) * 1982-11-08 1985-05-14 Allegheny Ludlum Steel Corporation Method and apparatus for slitting metal strip

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR962185A (de) * 1950-06-02
DE1125259B (de) * 1956-11-06 1962-03-08 Otto Junker Fa Saumfuehrung an Besaeumscheren
US3406924A (en) * 1965-07-09 1968-10-22 Stamco Inc Apparatus for winding coils of metal strip material
FR2033927A5 (de) * 1969-02-07 1970-12-04 Du Pont
FR2289315A1 (fr) * 1974-10-28 1976-05-28 Letron Gmbh & Co Procede et installation pour transformer une grosse bobine de materiau plastique en bande en bobines plus petites pretes a etre utilisees, dans l'industrie du meuble par exemple
FR2358197A1 (fr) * 1976-07-16 1978-02-10 Grefco Appareil et procede de fragmentation selective de particules de matiere cassable
US4421283A (en) * 1981-06-23 1983-12-20 Pro-Eco Limited Strip recoiling apparatus
US4516736A (en) * 1982-11-08 1985-05-14 Allegheny Ludlum Steel Corporation Method and apparatus for slitting metal strip

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2064222A2 (es) * 1992-09-18 1995-01-16 Iberica Ag Sa Prensa para trabajar materiales laminares.
WO2002076695A1 (en) * 2001-03-23 2002-10-03 Alcan International Limited Method and apparatus for trimming sheet metal
CN111573388A (zh) * 2020-05-22 2020-08-25 常州新创航空科技有限公司 一种预浸料分切机的工艺方法
CN112978463A (zh) * 2021-03-02 2021-06-18 赣州逸豪新材料股份有限公司 一种铜箔生产收卷用防割伤的限位导向装置
CN114657608A (zh) * 2022-04-14 2022-06-24 江西铜博科技有限公司 一种轻型电极铜箔生产装置

Also Published As

Publication number Publication date
JPH04189245A (ja) 1992-07-07
CA2031789A1 (en) 1991-06-09
KR910011356A (ko) 1991-08-07
EP0431963A3 (en) 1992-05-27

Similar Documents

Publication Publication Date Title
EP0431963A2 (de) Vorrichtung und Verfahren zum Langsschneiden eines amorphen Metallfilms
CN1025016C (zh) 螺旋切割平叠柔性管状聚合薄膜的方法及装置
EP1922209B1 (de) Vorrichtung, system und verfahren zum abschneiden von faserbündeln
EP0155321B1 (de) Vorrichtung zur aufnahme von schnittabfällen von papierband
CN215248597U (zh) 一种分切机
JP3863198B2 (ja) 巻取り装置及び巻取り方法
CN109720905B (zh) 放卷接料张力控制方法和一种放卷接料机构
EP0113564B1 (de) Vorrichtung und Verfahren zum Wickeln von Bahnen
US4565334A (en) Electrohydraulic drive for process line winders, unwinders and other equipment
EP0057523B1 (de) Längsschneidumroller
CN112897186A (zh) 一种分切机、分切方法及其应用
JP2501497B2 (ja) ロ―ビング材積層装置
GB2056417A (en) Method and apparatus for slitting and rewinding web materials
CN110154104A (zh) 包装用pvc塑料薄膜热裁切装置
CN115583539B (zh) 一种用于复合材料丝束铺放的丝束张力控制装置及方法
CN209635497U (zh) 一种放卷接料机构
EP0107959A2 (de) Elektrohydraulischer Antrieb für Wickel- und Abwickelvorrichtungen und andere Einrichtungen in Fertigungsstrassen
US4516736A (en) Method and apparatus for slitting metal strip
JPH05229701A (ja) ロールスタンド
CN213707240U (zh) 一种收放料装置和激光加工装置
CN212292164U (zh) 一种预浸料分切机用复卷装置
WO2008116311A1 (en) Web processing system with adjustable multiple slit web separation and redirection system and/or with automatic rewind and/or automatic unwind roll transfer system
US6481664B1 (en) Automatic tape crossover
CN112125013A (zh) 一种薄膜流延机用的收卷装置
EP0648554A1 (de) Verfahren und Vorrichtung zum Anbringen eines Papierstreifens an ein Metallband auf einer kontinuierlich arbeitenden Anlage

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19921118

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19930105