CN108127891B - Rotatory aircraft nose device of extruder - Google Patents

Rotatory aircraft nose device of extruder Download PDF

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Publication number
CN108127891B
CN108127891B CN201711454246.6A CN201711454246A CN108127891B CN 108127891 B CN108127891 B CN 108127891B CN 201711454246 A CN201711454246 A CN 201711454246A CN 108127891 B CN108127891 B CN 108127891B
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CN
China
Prior art keywords
machine head
extruder
ring
head
assembly
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CN201711454246.6A
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Chinese (zh)
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CN108127891A (en
Inventor
叶维兵
李起龙
杜海涛
徐竞奕
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.)
Hangzhou Jinlong Optoelectronics Co.,Ltd.
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Nanjing Wasin Fujikura Optical Communication Ltd
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Priority to CN201711454246.6A priority Critical patent/CN108127891B/en
Publication of CN108127891A publication Critical patent/CN108127891A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/30Extrusion nozzles or dies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/30Extrusion nozzles or dies
    • B29C48/32Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2011/00Optical elements, e.g. lenses, prisms
    • B29L2011/0075Light guides, optical cables

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The invention discloses a rotary machine head device of an extruder, which comprises a machine head frame, a machine head end cover, a machine head, a flow distribution cone, a machine head flange, a high-temperature mechanical sealing device and a servo motor, wherein the machine head frame is provided with a machine head cover; the machine head frame is connected with the extruder through a machine head flange; the machine head end covers are respectively arranged at two sides of the machine head frame; the machine head is arranged on the inner side of the machine head frame, and high-temperature mechanical sealing devices are respectively arranged at the matching positions of the machine head and the two ends of the machine head frame; the shunting cone is fixedly arranged on the inner side of the machine head and forms a revolving body with the machine head; two ends of the revolving body respectively extend out of the corresponding machine head end covers, and a conical roller bearing is arranged at the matching part of the revolving body and the machine head end covers; one end of the revolving body is connected with the servo motor in a transmission way. The extruder head is different from the conventional fixed extruder head in design, normal discharge of the extruder head is realized, the extruder head can rotate controllably, the production cost is low, and the subsequent maintenance is convenient.

Description

Rotatory aircraft nose device of extruder
Technical Field
The invention particularly relates to a rotary machine head device of an extruder.
Background
Unilateral (spiral) skeleton optical fiber ribbon optical cable is a more excellent structure in the skeleton optical cable, and it allows to use midway branch technique to take out the optical fiber ribbon, can branch as required along the optional position of optical cable line at any time, and because of its full dry structure, the construction can be convenient more high-efficient, environmental protection more simultaneously. Therefore, if the optical cable can be rapidly released in the domestic market, the optical cable is certainly favored by various operators. The skeleton core as the support unit of the unidirectional (spiral) skeleton optical cable is also a carrier for twisting the optical fiber ribbon, and the quality of the skeleton core is related to the cabling capacity, the communication performance, the mechanical performance and the temperature characteristic of the optical cable. Therefore, reliable and efficient production line equipment is very important for producing qualified unidirectional skeleton cores.
Most of the production line equipment for producing unidirectional framework cores abroad (mainly Japan) rotates the whole production line, namely, a wire-rewinding machine, a twisting crawler, a tractor, the wire-rewinding machine and the like all need to rotate in the same direction, and an extruder is fixed and does not rotate. However, the production method has high equipment cost and high subsequent maintenance cost, and is not beneficial to popularization.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provide a device which is low in cost and only rotates a machine head part.
In order to achieve the aim, the invention provides a rotary machine head device of an extruder, which comprises a machine head frame, a machine head end cover, a machine head, a shunting cone, a machine head flange, a high-temperature mechanical sealing device and a servo motor, wherein the machine head frame is provided with a first end cover and a second end cover; the machine head frame is connected with the extruder through a machine head flange; the machine head end covers are respectively arranged at two sides of the machine head frame; the machine head is arranged on the inner side of the machine head frame, and high-temperature mechanical sealing devices are respectively arranged at the matching positions of the machine head and the two ends of the machine head frame; the shunting cone is fixedly arranged on the inner side of the machine head and forms a revolving body with the machine head; two ends of the revolving body respectively extend out of the corresponding machine head end covers, and a conical roller bearing is arranged at the matching part of the revolving body and the machine head end covers; one end of the revolving body is connected with the servo motor in a transmission way.
Furthermore, the inner side surface of the machine head frame and the outer side surface of the machine head are respectively provided with corresponding annular grooves which form a sealed annular flow passage with the end cover of the machine head.
Furthermore, the section of the annular groove on the outer side surface of the machine head is inverted splayed.
Through the annular flow passage and the design of the inverted eight-shaped groove, the pressure fluctuation of the extruder entering the machine head is reduced through buffering, the medium pressure at the sealing fit contact surface is reduced, and the pressure is reduced through buffering for the first time in the machine head.
Furthermore, the inner side surface of the machine head is conical and is matched with the outer conical surface of the shunt cone; corresponding labyrinth grooves are respectively arranged on the inner side surface of the machine head and the outer side surface of the spreader cone to form a labyrinth flow channel together; a plurality of feed inlets are uniformly distributed on the outer side surface of the machine head along the circumferential direction; the annular flow passage, the feed inlet and the labyrinth flow passage are communicated with each other.
Through the transformation of the labyrinth type runner angle of the spreader cone and the matching of the circumference and the symmetrical feeding mode of the machine head, the medium is subjected to pressure hedging in the conveying process, the pressure of the medium at the outlet of the spreader cone is balanced and stabilized, and the pressure is buffered and reduced at the second position in the machine head.
Meanwhile, the inverted eight-shaped groove and the circumferentially distributed feed inlets are communicated with the diverging cone labyrinth flow channel to form diverging cone annular circumferential feed which is the third buffer pressure reduction in the machine head.
Further, the high-temperature mechanical sealing device comprises a movable ring, a spring, a movable ring seat and a static ring; the movable ring seat is provided with a placing groove; the movable ring and the movable ring seat are fixedly arranged on the outer side surface of the machine head, and one end of the movable ring is positioned in the placement groove; the spring is arranged in the placing groove, and two ends of the spring are respectively abutted against the movable ring and the movable ring seat; the static ring is fixedly arranged on the inner side surface of the headstock; a static ring high-temperature resistant O-shaped ring is arranged at the assembly position of the static ring and the headstock; a movable ring high-temperature resistant O-shaped ring is arranged at the assembly position of the movable ring and the movable ring seat; and a high-temperature-resistant O-shaped ring of the movable ring seat is arranged at the assembly position of the movable ring seat and the machine head. The high-temperature mechanical sealing device is used for preventing leakage of high-temperature, high-pressure and corrosive media, and the pretightening force in the mechanical seal is realized through a high-temperature spring. The springs are designed and installed, longitudinally and circumferentially uniformly distributed, and the circumferential springs act simultaneously to realize small deformation and large pretightening force.
Furthermore, heating rods, heat sensors and related wiring are annularly and uniformly distributed on the inner side face of the machine head, a collecting ring assembly is arranged at one end, far away from the servo motor, of the machine head, and the collecting ring assembly is connected with the heating rods and the heat sensors through the related wiring. The heating in the aircraft nose, i.e. headstock and aircraft nose, all heat with built-in equipartition heating rod form, through reserving the slot, carry out the wiring. Because the head normally works and rotates, the power supply of the heating rod and the power supply of the heat-sensitive sensor are realized by installing a collecting ring and a carbon brush holder assembly at the end part of the head.
Furthermore, the extruder rotating head device also comprises a power transmission mechanism assembly, an outer die mounting adjusting seat assembly and a driven gear; the power transmission mechanism assembly comprises a speed reducer, a clutch and a driving gear; the servo motor is fixedly connected with the driving gear through the speed reducer and the clutch in sequence; the outer die mounting adjusting seat assembly is fixedly arranged on the inner side of the shunting cone; the driven gear is fixedly arranged at one end of the shunting cone through the outer die mounting adjusting seat component and is meshed with the driving gear.
The extruder extrudes medium, and the medium has high viscosity and poor flowability, so the power for rotating the machine head is provided by a high-power servo motor. The matching of the speed reducer is determined according to the characteristics and the production speed of the skeleton core product.
The power for rotating the machine head is transmitted by a driving gear arranged on the power transmission assembly and a driven gear arranged on the tap cone in a meshed manner; through the meshing transmission of the rigid gears, the unstable transmission condition caused by the high temperature of the machine head is avoided; in addition, the rigid gear has the advantages of meshing transmission, and because the contact surface of the meshing gear is small and is in instant contact, the heat of the machine head is difficult to be transferred to each power transmission component;
furthermore, the extruder rotating head device also comprises a lifting adjusting bracket; the power transmission mechanism assembly is fixedly arranged on the ground through the lifting support. The adjustment of the meshing clearance between the driving gear and the driven gear is carried out through the lifting adjustment bracket.
Furthermore, the extruder rotating head device also comprises an electrical control cabinet component which mainly comprises a PLC, a frequency converter, a server, a temperature controller, a relay, a configuration interface and the like. The temperature and the rotating speed of the machine head are controlled by a control cabinet.
Compared with the prior art, the invention has the following advantages:
1. the extruder head is different from the conventional fixed extruder head in design, so that the normal discharge of the extruder head is realized, and the extruder head can rotate controllably;
2. the inner side annular groove of the machine head frame is matched with the inverted eight-shaped groove on the outer cylindrical surface of the machine head to form a closed annular flow channel, and the pressure fluctuation of the extruder entering the machine head and the medium pressure at the sealing matching contact surface are reduced through the size difference of the matching surface of the inner side annular groove of the machine head frame and the machine head groove and the design of the inverted eight-shaped groove of the machine head, so that the first buffer pressure reduction in the machine head is realized;
3. the inner conical surface of the machine head is matched and installed with the outer conical surface of the shunt cone, the labyrinth groove on the conical surface of the shunt cone is matched and installed with the conical surface on the inner side of the machine head, the labyrinth groove and the conical surface are fastened and sealed to form a labyrinth flow channel, and pressure is oppositely flushed in the medium conveying process through the angle change, circumference and symmetrical feeding mode of the flow channel of the shunt cone, so that the pressure of a medium at the outlet of the shunt cone is balanced and stabilized; the second position in the machine head is buffered and decompressed;
4. in the inverted eight-shaped groove, feed inlets which are uniformly distributed on the circumference are communicated with the annular runner of the shunting cone to form annular circumferential feeding of the shunting cone, which is the third buffer decompression in the machine head;
5. the design of reducing the conveying pressure of three media in the machine head can ensure that the extruder rotates the machine head device, the discharged media and the pressure are stable;
6. through the high-temperature mechanical sealing device, the medium conveyed between the machine head frame and the machine head has little leakage and long running time; meanwhile, the high-temperature mechanical sealing device adopts a plurality of high-temperature springs, and a circumferential longitudinally and uniformly distributed mode is adopted to realize small deformation and large pretightening force.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a longitudinal structural cross-sectional view of the present invention;
FIG. 3 is a cross-sectional view of a transverse flow passage of the present invention;
FIG. 4 is a cross-sectional view of a splayed slot, circumferential feed port of the handpiece of the present invention;
FIG. 5 is an isometric view of a labyrinthic runner of the spreader cone of the present invention;
fig. 6 is a cross-sectional view of the mechanical seal assembly of the present invention.
Detailed Description
The invention is further illustrated by the following detailed description of the drawings.
As shown in FIG. 1, the extruder rotating head device of the invention comprises a head assembly, an electrical control assembly, a power transmission assembly and a lifting adjusting bracket 14.
The power transmission assembly comprises a clutch 11, is arranged on the lifting adjusting bracket 14, is connected with the driven gear 5 through a driving gear on the clutch 11 and transmits power; the speed reducer 12 is fixed to the other side of the clutch 11. The speed reducer 12 is fixedly arranged on the clutch 11; the servo motor 13 is mounted and fixed on the speed reducer 12.
The servo motor 13 is fixedly arranged on the speed reducer 12 and is connected with a related power supply and an electric control wiring;
the lifting adjusting bracket 14 is fixed on the ground, and the power transmission mechanism assembly 11 is installed and fixed on the top platform;
and the electrical control assembly is connected with the collecting ring assembly 8, the servo motor 13 and the production line main control cabinet.
Referring to fig. 2, the handpiece assembly of the present invention specifically includes a handpiece end cover 1, a handpiece frame 2, a handpiece 3, a tap cone 4, a driven gear 5, an external mold mounting adjustment seat assembly 6, a handpiece flange 7, a collecting ring assembly 8, a tapered roller bearing 9, and a high temperature mechanical seal device 10.
The headstock 2 is a quenching and tempering nitriding workpiece, is provided with a headstock flange 7 on one outer side and is connected and fastened with an extruder through a half; the inner side of the machine head frame 2 is provided with an annular groove which is matched with the machine head 3 to form a closed annular flow passage; in the machine head frame 2 workpiece, heating rods and related wiring are annularly and uniformly distributed.
The machine head 3 is a quenching and tempering nitriding workpiece, and the outer cylindrical surface is matched with the machine head frame 2 to form an annular flow passage; the inner side of the flow-dividing cone 4 is matched with the inner labyrinth pressure-reducing flow passage, and the flow-dividing cone is fastened through bolts; one end part of the machine head 3 is matched and installed with the collecting ring assembly 8; in the machine head 3 workpiece, heating rods and related wiring are annularly and uniformly distributed.
The shunting cone 4 is a quenching and tempering nitriding workpiece, and the outer conical surface is provided with a labyrinth type pressure reduction flow passage design and is matched and fixedly arranged with the machine head 3; one end part of the outer side of the shunting cone 4 is matched and fixedly arranged with the driven gear 5.
The driven gear 5 is a quenching and tempering nitriding workpiece and is installed in a matching way with the sprue spreader 4, and in addition, the outer die is provided with an adjusting seat assembly 6 which is also installed and fixed with the driven gear 5.
The outer die mounting adjusting seat assembly 6 is a high-quality stainless steel part, is mounted on the inner side of the sprue spreader 4 and is fixedly fastened with the driven gear 5; and the other end of the outer die installation adjusting seat assembly 6 is provided with an outer die.
The machine head flange 7 is a quenching and tempering nitriding workpiece, one end of the machine head flange is installed on the machine head frame 2 through threads, and the other end of the machine head flange is connected with the production line extruder through a half.
A slip ring assembly 8 mounted on one end of the head 3 and connected to the heating rod and the heat sensor.
The outer side of the tapered roller bearing 9 is matched with the machine head end cover 1, and the inner side of the tapered roller bearing is matched with the machine head 3; the inner side of the other tapered roller bearing 9 is matched with the sprue spreader.
The high-temperature mechanical sealing device 10 is a newly designed high-temperature mechanical sealing assembly, is arranged in a cylindrical annular cavity formed by matching the machine head frame 2 and the machine head 3, is fixed at the end part of the machine head 3, and prevents high-temperature medium from leaking in work.
The machine head 3 is tightly connected with the spreader cone 4 through a bolt to form a revolving body; the machine head end cover 1 is matched and fastened with the machine head frame 2 to form a fixed frame and is fixed with the extruder through a machine head flange 7; two ends of the revolving body are matched with the machine head end cover 1, and two ends of the inner side of the revolving body are provided with the tapered roller bearings 9, so that automatic centering and rotation can be realized.
As shown in fig. 3, it can be seen that the medium in the handpiece flows in from a handpiece flange 7 connected with the extruder and the handpiece 2, enters an annular groove on the inner side of the handpiece 2, and forms a closed annular flow passage in cooperation with the handpiece 3; the medium entering the closed annular flow passage is guided by 6 transverse flow guide ports in the machine head 3 to be matched with the splitter cone 4 from the inner side of the machine head 3 to form an inner labyrinth pressure reduction flow passage, and the medium is discharged from the machine body after the pressure is stabilized by the splitter cone 4 labyrinth pressure reduction flow passage.
Referring to fig. 4, the outer cylindrical surface of the head is provided with inverted splayed grooves 31 and feed inlets 32 uniformly distributed on the circumference.
Referring to fig. 5, the outer conical surface of the splitter cone is provided with a labyrinth-shaped groove 41.
Fig. 6 is a view of a high temperature resistant mechanical seal assembly, which mainly includes a stationary ring 16, a moving ring 17, a spring 18, a moving ring seat 19, a stationary ring high temperature resistant O-ring 20, a moving ring high temperature resistant O-ring 21, and a moving ring seat high temperature resistant O-ring 22.
The high-temperature-resistant mechanical seal assembly is arranged on the inner sides of the headstock 2 and the machine head 3, fixes the movable ring 17, the spring 18 and the movable ring seat 19 on the machine head 3 through countersunk screws and synchronously rotates with the machine head 3; the stationary ring 16 is mounted inside the head frame 2 and remains stationary with the head frame.
Adopt high temperature resistant mechanical seal subassembly, the main objective prevents that headstock 2 inboard annular groove from, with the cooperation of the outer cylinder face of aircraft nose 3 eight type slots of falling, and the airtight annular flow way that forms produces and reveals in the transport medium process.

Claims (5)

1. The utility model provides an extruder rotating head device which characterized in that: the machine head comprises a machine head frame, a machine head end cover, a machine head, a spreader cone, a machine head flange, a high-temperature mechanical sealing device and a servo motor; the machine head frame is connected with the extruder through a machine head flange; the machine head end covers are respectively arranged on two sides of the machine head frame; the machine head is arranged on the inner side of the machine head frame, and the high-temperature mechanical sealing devices are respectively arranged at the matching positions of the machine head and the two ends of the machine head frame; the shunting cone is fixedly arranged on the inner side of the machine head and forms a revolving body with the machine head; two ends of the revolving body respectively extend out of the corresponding machine head end covers, and a conical roller bearing is arranged at the matching part of the revolving body and the machine head end covers; one end of the revolving body is in transmission connection with the servo motor; the inner side surface of the machine head frame and the outer side surface of the machine head are respectively provided with corresponding annular grooves which form a sealed annular flow passage with the end cover of the machine head; the section of the annular groove on the outer side surface of the machine head is inverted splayed; the inner side surface of the machine head is conical and is matched with the outer conical surface of the shunting cone; corresponding labyrinth grooves are respectively arranged on the inner side surface of the machine head and the outer side surface of the spreader cone to form a labyrinth flow channel together; a plurality of feed inlets are uniformly distributed on the outer side surface of the machine head along the circumferential direction; the annular flow passage, the feed inlet and the labyrinth flow passage are communicated with each other.
2. The extruder rotary head device of claim 1, wherein: the high-temperature mechanical sealing device comprises a movable ring, a spring, a movable ring seat and a static ring; the movable ring seat is provided with a placing groove; the movable ring and the movable ring seat are fixedly arranged on the outer side surface of the machine head, and one end of the movable ring is positioned in the placement groove; the spring is arranged in the placing groove, and two ends of the spring are respectively abutted against the movable ring and the movable ring seat; the static ring is fixedly arranged on the inner side surface of the headstock; a static ring high-temperature-resistant O-shaped ring is arranged at the assembly position of the static ring and the headstock; a movable ring high-temperature-resistant O-shaped ring is arranged at the assembly position of the movable ring and the movable ring seat; and a high-temperature-resistant O-shaped ring of the moving ring seat is arranged at the assembly position of the moving ring seat and the machine head.
3. Extruder rotating head device according to claim 1 or 2, characterized in that: heating rods, heat sensors and related wiring are annularly and uniformly distributed on the inner side face of the machine head, a collecting ring assembly is arranged at one end, far away from the servo motor, of the machine head, and the collecting ring assembly is connected with the heating rods and the heat sensors through the related wiring.
4. Extruder rotating head device according to claim 1 or 2, characterized in that: the extruder rotating head device also comprises a power transmission mechanism assembly, an outer die mounting adjusting seat assembly and a driven gear; the power transmission mechanism assembly comprises a speed reducer, a clutch and a driving gear; the servo motor is fixedly connected with the driving gear through the speed reducer and the clutch in sequence; the outer die mounting adjusting seat assembly is fixedly arranged on the inner side of the sprue spreader; the driven gear is fixedly arranged at one end of the shunting cone through the outer die mounting adjusting seat component and is meshed with the driving gear.
5. The extruder rotary head device of claim 4, wherein: the extruder rotating head device also comprises a lifting adjusting bracket; the power transmission mechanism assembly is fixedly arranged on the ground through the lifting support.
CN201711454246.6A 2017-12-28 2017-12-28 Rotatory aircraft nose device of extruder Active CN108127891B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711454246.6A CN108127891B (en) 2017-12-28 2017-12-28 Rotatory aircraft nose device of extruder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711454246.6A CN108127891B (en) 2017-12-28 2017-12-28 Rotatory aircraft nose device of extruder

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Publication Number Publication Date
CN108127891A CN108127891A (en) 2018-06-08
CN108127891B true CN108127891B (en) 2020-06-05

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000060640A (en) * 1999-03-18 2000-10-16 권문구 Rotary crosshead with helical groove
US8920154B2 (en) * 2009-07-28 2014-12-30 American Extrusion International Head assembly for use in a rotary head extruder for extruding a food product
CN205021948U (en) * 2015-09-25 2016-02-10 烽火通信科技股份有限公司 Be used for carrying out pigmented mould of polychrome strip to pine sleeve pipe
CN106402396A (en) * 2016-10-25 2017-02-15 浙江大学 High-temperature mechanical sealing structure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000060640A (en) * 1999-03-18 2000-10-16 권문구 Rotary crosshead with helical groove
US8920154B2 (en) * 2009-07-28 2014-12-30 American Extrusion International Head assembly for use in a rotary head extruder for extruding a food product
CN205021948U (en) * 2015-09-25 2016-02-10 烽火通信科技股份有限公司 Be used for carrying out pigmented mould of polychrome strip to pine sleeve pipe
CN106402396A (en) * 2016-10-25 2017-02-15 浙江大学 High-temperature mechanical sealing structure

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Effective date of registration: 20221227

Address after: 311399 Qingke Village, Jincheng Street, Lin'an District, Hangzhou City, Zhejiang Province

Patentee after: HANGZHOU JINLONG OPTICAL CABLE CO.,LTD.

Address before: No. 76, Xingang Avenue, Nanjing Economic Development Zone, Jiangsu 210000

Patentee before: NANJING WASIN FUJIKURA OPTICAL COMMUNICATION Ltd.

CP03 Change of name, title or address
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Address after: 311300 Qing Ke village, Jincheng Street, Ling'an District, Hangzhou, Zhejiang

Patentee after: Hangzhou Jinlong Optoelectronics Co.,Ltd.

Address before: 311399 Qingke Village, Jincheng Street, Lin'an District, Hangzhou City, Zhejiang Province

Patentee before: HANGZHOU JINLONG OPTICAL CABLE CO.,LTD.