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1. 发明专利

JPH0725540A OPTICAL FIBER RECEIVING MACHINE 失效
公开(公告)号：JPH0725540A
公开(公告)日：1995-01-27
申请号：JP16818693
申请日：1993-07-07
申请人： KOBE STEEL LTD
发明人： KISHI SHIRO , IKEGAMI YOSHIO , HIRUMA SHIGEO , AKITA TOSHIAKI , TAKASHITA TADASHI , TASHIRO NAOYUKI , MAEHARA MASAAKI
IPC分类号： B65H51/04 , B65H57/14 , G02B6/44
摘要： PURPOSE:To absorb or prevent micro-vibration from being transmitted to the optical fiber so as to secure any desired dimensional precision by providing a vibrational energy absorbing means acting as a bearing having no vibration generating source of a receiving capstan and both guide rollers. CONSTITUTION:A receiving machine 7 is composed of a receiving capstan 11, a pair of guide rollers 13, 14 arranged on the right and left sides below the capstan 11, parallel to a capstan shaft 12 at a distance, and an endless belt 15 wound around both guide roller 13, 14, for pressing an optical fiber 10A to the outer peripheral surface 11A of the receiving capstan 11. In the capstan 11, the capstan shaft 2 is jurnalled to a bearing stand 17 through a metal bearing 16 serving as one of vibrational energy absorbing means. And the guide rollers 13, 14 are rotatably journalled to roller shafts 21, 22 through respective metal bearings 23, 24. Thereby, the transmission of micro-vibration to the optical fiber 10, 10A can be eliminated.

2. 发明专利

JPH0710384A WIRE DRAWING DEVICE 失效
公开(公告)号：JPH0710384A
公开(公告)日：1995-01-13
申请号：JP15555393
申请日：1993-06-25
申请人： KOBE STEEL LTD
发明人： KISHI SHIRO , IKEGAMI YOSHIO , AKITA TOSHIAKI , HIRUMA SHIGEO
IPC分类号： B65H54/28 , B65H59/38
摘要： PURPOSE:To make a job for continuous winding achievable by means of an idle winding at the side of a bobbin in this wire drawing device as well as to enable it to cope with a large variation in linear velocity due to this idle winding. CONSTITUTION:An optical fiber wire drawing device is equipped with a winding mechanism 2 and a dancer 1. This winding mechanism 2 is equipped with two bobbins 14a and 14b, and each idle winding wheel 18 is installed in these bobbins 14a and 14b. In addition, when a linear work 15 is transferred from the bobbin 14a on one side to the bobbin 14b on the other, an idle winding is carried out by the idle winding wheel 18 and then it is transferred to the idle winding wheel 18 of the bobbin 14b on the other. On the other hand, the dancer 1 is equipped with a swing dancer sheave 6 and an accumulator sheave 7, and when the linear work 15 is wound up by a bobbin barrel part 16, any variation in linear velocity is accommodated by a movement of the dancer sheave 6 as well as when the linear work is transferred from the barrel part 16 to the idle winding wheel 18 and vice versa, a fact that it is too much for accommodation by movements of the swing dancer sheave 6 alone is detected by two proximity switches 12 and 13, and thus an accumulator sheave 7 is shifted in order to cope with it.

3. 发明专利

JPH06179233A WIRE ROD COVERING METHOD AND DEVICE THEREOF 失效
公开(公告)号：JPH06179233A
公开(公告)日：1994-06-28
申请号：JP33317492
申请日：1992-12-14
申请人： KOBE STEEL LTD
发明人： TASHIRO NAOYUKI , IKEGAMI YOSHIO , KISHI SHIRO , TAKASHITA TADASHI , AKITA TOSHIAKI , MAEHARA MASAAKI
IPC分类号： B29C47/02 , B29C48/92 , H01B13/14 , B29C47/92
摘要： PURPOSE:To provide wire rod covering method and the covering device, with which steady operating state can be obtained quickly. CONSTITUTION:The device concerned is equipped with an extruder 1 for extruding covering resin, a crosshead 2, in which wire rod 3 is covered with the resin, a pressure sensor 7 and a temperature sensor 8. Further, at a resin introductory part 4, a discharge port 9 for discharging the resin outside the crosshead 2 and a switching valve 10 for flowing the resin either to the crosshead main body 6 side or to the discharge port 9 side are provided. Furthermore, a discharge pressure controlling valve 15 for controlling the pressure of the resin flowing through the discharge port 9 is provided. In addition, a valve controlling means 16, which controls the resin flow passage area flowing through the discharge port 9 so as to equalize the resin pressure in the resin introductory part 4 under the condition that the resin flows to the discharge port 9 side with the pressure of the resin under steady operation at the covering of the wire rod, is provided.

4. 发明专利

JPH0531786A OVERFLOW CONTROLLING DEVICE OF EXTRUDER IN TWO LAYER WIRE COATING EQUIPMENT 失效
公开(公告)号：JPH0531786A
公开(公告)日：1993-02-09
申请号：JP19211591
申请日：1991-07-31
申请人： KOBE STEEL LTD
发明人： TAKASHITA TADASHI , IKEGAMI YOSHIO , KISHI SHIRO , AKITA TOSHIAKI , TASHIRO NAOYUKI
IPC分类号： B29C47/02 , B29C47/28 , B29C47/92 , H01B13/14 , H01B13/24
摘要： PURPOSE:To automatically open and close overflow valves at a set timing. CONSTITUTION:The outer periphery of wire 17 is coated in two layers at a cross head 16 with resin extruded from a main extruder 12 and resin extruded from an auxiliary extruder 14. Overflow valves 18 and 19 are openably and closably provided between the outlet sides of the respective extruders 12 and 13 and the cross head 16. Further, actuators 27 and 28, which operate the respective overflow valves 18 and 19 to open and close, and an opening and closing controlling section 30, which actuates the respective actuators 27 and 28 on the basis of the comparison between the linear speed of the wire 17 and the set point.

5. 发明专利

JPH04239622A TWO-LAYER CROSSHEAD DEVICE OF EXTRUSION MACHINE 失效
公开(公告)号：JPH04239622A
公开(公告)日：1992-08-27
申请号：JP2414791
申请日：1991-01-23
申请人： KOBE STEEL LTD
发明人： IKEGAMI YOSHIO , TAKASHITA TADASHI , OSHITA MASARU
IPC分类号： B29C47/04 , B29C48/34 , B29L9/00 , B29L23/00
摘要： PURPOSE:To cause a taper liner not to be moved by resin pressure by inserting the taper liner into the hole of larger diameter in the state where the annular projection part provided on the outer peripheral of the taper liner is plunged into the annular recessed part provided on the inner periphery of large diameter. CONSTITUTION:In the state where the annular projected part 4d provided on the outer peripheral of a taper liner 4 is plunged in the annular recessed part 3k provided on the inner peripheral of the hole 3a of larger diameter, a taper liner 4 is inserted into the hole 3a of large diameter. Consequently, heating and cooling are repeated at each start and stop of a crosshead device, whereby a small clearance epsilon is generated between the bottom surface 4c of the taper liner 4 and the side 3h of a cartridge 3. Even if molten applying resin enters the clearance epsilon, and the total pressure of the resin acting on the bottom surface 4c and the tip part 4b of the taper liner 4 is changed, and then the taper liner is pushed to the side of a distributor 9, the taper liner 4 does not move to the side of the distributor 9.

6. 发明专利

JPH0359023B2 失效
公开(公告)号：JPH0359023B2
公开(公告)日：1991-09-09
申请号：JP13284185
申请日：1985-06-17
申请人： KOBE STEEL LTD
发明人： IKEGAMI YOSHIO , KISHI SHIRO , TAKASHITA TADASHI , AKITA TOSHIAKI
IPC分类号： C03C25/12 , B05C3/12 , G02B6/44

7. 发明专利

JPS61291438A CROSSHEAD FOR COATING OPTICAL FIBER 失效
公开(公告)号：JPS61291438A
公开(公告)日：1986-12-22
申请号：JP13284185
申请日：1985-06-17
申请人： KOBE STEEL LTD
发明人： IKEGAMI YOSHIO , KISHI SHIRO , TAKASHITA TADASHI , AKITA TOSHIAKI
IPC分类号： C03C25/12 , B05C3/12 , G02B6/44
摘要： PURPOSE:To hold an optical fiber automatically in the center of a die opening in automatic alignment, by feeding a coating material in the form of a vortex current with the die opening as a center to the die opening to coat the optical fiber. CONSTITUTION:An optical fiber 28 drawn from a base material 1 is passed through a nipple hole 17 and a die opening 22 of a crosshead 5 at a given speed. On the other hand, a coating material 29 from a coating material pressure feeding device 6 is passed through a feeding passage 25 to the crosshead 5 at a given flow rate under a specific pressure and passed through a spiral guide 26 of the passage 24 to form a vortex current. The coating material 29 is then fed to the die opening 22 to align automatically the optical fiber 28 passing through the die opening 22. Thus, the coating material 29 is brought into contact with the optical fiber 28 to coat the outer peripheral surface thereof while keeping the optical fiber 28 stably in the center of the die opening 22 and the nipple hole 17.

8. 发明专利

JPS61291436A APPARATUS FOR COATING OPTICAL FIBER 失效
公开(公告)号：JPS61291436A
公开(公告)日：1986-12-22
申请号：JP13283985
申请日：1985-06-17
申请人： KOBE STEEL LTD
发明人： IKEGAMI YOSHIO , KISHI SHIRO , AKITA TOSHIAKI , TAKASHITA TADASHI
IPC分类号： C03C25/12 , B05C3/12 , G02B6/44
摘要： PURPOSE:To feed a coating material into a pressurized die continuously and make continuous coating possible, by providing accumulators in a pressure feeding passage of the coating material between a metering pump used as a pressure feeding means and the pressurized die. CONSTITUTION:One end of a base material 2 for an optical fiber is melted in a resistance heating furnace 3 while heating and drawn into an element wire 5 for the optical fiber. The outside diameter of the element wire 5 for the optical fiber is then measured by an outside diameter measuring instrument 6 and fed back to a capstan 9 to give a given outside diameter. The element wire 5 is drawn into a wire at a specific speed. Thus, the element wire 5 for the optical fiber drawn from the base material 2 is passed through a pressurized die 7 and coated with a given coating material 14 on the outer peripheral surface thereof. The coating 14 is stored in a vessel 15 and fed to the pressurized die 7 by a metering pump 16. Accumulators 17 are provided in a pipe 18 between the metering pump 16 and the pressurized die 7, and therefore the coating material 14 fed from the metering pump 16 under pressure can be kept under a constant pressure.

9. 发明专利

JPS60239345A PROCESS AND DEVICE FOR COATING OPTICAL FIBER 失效
公开(公告)号：JPS60239345A
公开(公告)日：1985-11-28
申请号：JP7158084
申请日：1984-04-09
申请人： KOBE STEEL LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： AZUMA MAKOTO , SUGANO KATSUMI , IKEGAMI YOSHIO , KISHI SHIROU , TAKASHITA TADASHI , AKITA TOSHIAKI
IPC分类号： B29C47/02 , B29L9/00 , B29L11/00 , C03B37/12 , C03C25/10 , G02B6/44
摘要： PURPOSE:To obtain coated optical fiber having high adhesion of the outside layer and the inside layer with high coating speed by passing an optical fiber through a resin tube extruded under elevated pressure at an outlet of a tube die and extruding further another resin under elevated pressure around the external peripheray of said resin tube. CONSTITUTION:The optical fiber A is passed through the cylindrical member 24 of the tube die 20 and forwarded without contacting with a molten resin extruded from a pressure extruder 26. The optical fiber A is passed through a tube P of a resin B formed by extrusion under pressure through an outside diameter forming part 27 while stretching the optical fiber A. On one hand, another thermoplastic resin C is fed from a pressure extruder 35 to a pressurized passage 36 under pressure and the tube P is compressed in a centripetal direction and extruded toward the forwarding direction of the optical fiber A. By this procedure, the resin C is coated directly on the external peripheral surface of the tube P under pressure until the inside peripheral surface of the tube P is adhered tightly to the external peripheral surface of the optical fiber A. Thus, a fiber core wire D coated to double layer is obtd.

10. 发明专利

JPS60215555A METHOD FOR COATING OPTICAL FIBER AND COATING APPARATUS 失效
公开(公告)号：JPS60215555A
公开(公告)日：1985-10-28
申请号：JP7157984
申请日：1984-04-09
申请人： KOBE STEEL LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： AZUMA MAKOTO , SUGANO KATSUMI , IKEGAMI YOSHIO , KISHI SHIROU , TAKASHITA TADASHI , AKITA TOSHIAKI
IPC分类号： B29C48/32 , B29C63/18 , B29L9/00 , B29L11/00 , C03B37/12 , C03C25/10 , G02B6/44
摘要： PURPOSE:To coat an optical fiber with a film of uniform thickness at a high speed, by advancing an optical fiber into a molten resin tube prepared by pressure molding a thermoplastic resin in a tubular die, drawing the tube on the outside of the die, and adhering the tube closely to the optical fiber. CONSTITUTION:An optical fiber (A) is run from above downward while being drawn, and passed through a cylindrical member 27. In the process, the optical fiber (A) is passed through a tubular die 20 without contact with a molten resin (B) extruded through an extruder 29 under pressure. The molten resin (B) is formed into a molten resin tube in a molding part 23 by pressure extrusion to prevent the backflow of the resin in the process. The optical fiber (A) is advanced into the tube, which is closely adhered onto the outer peripheral surface of the optical fiber (A) below a die 22. In the step, a gas is made to flow in the centripetal direction by a guide part 40 of an aligning means 35, and the optical fiber (A) and the tube are held in the center of the molding part 23 before and after the point starting the close adhesion. Thus, the aimed core wire (Q) of the optical fiber (A) coated under pressure can be obtained while preventing the running deflection.

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