US3858544A - Apparatus for marking insulated cables - Google Patents

Apparatus for marking insulated cables Download PDF

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Publication number
US3858544A
US3858544A US326216A US32621673A US3858544A US 3858544 A US3858544 A US 3858544A US 326216 A US326216 A US 326216A US 32621673 A US32621673 A US 32621673A US 3858544 A US3858544 A US 3858544A
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US
United States
Prior art keywords
nozzle
strand
pressure
commutator
valve
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.)
Expired - Lifetime
Application number
US326216A
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English (en)
Inventor
Gert Kramer
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.)
Alcatel Lucent NV
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
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Publication of US3858544A publication Critical patent/US3858544A/en
Assigned to ALCATEL N.V., DE LAIRESSESTRAAT 153, 1075 HK AMSTERDAM, THE NETHERLANDS, A CORP OF THE NETHERLANDS reassignment ALCATEL N.V., DE LAIRESSESTRAAT 153, 1075 HK AMSTERDAM, THE NETHERLANDS, A CORP OF THE NETHERLANDS ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: INTERNATIONAL STANDARD ELECTRIC CORPORATION, A CORP OF DE
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/34—Apparatus or processes specially adapted for manufacturing conductors or cables for marking conductors or cables
    • H01B13/345—Apparatus or processes specially adapted for manufacturing conductors or cables for marking conductors or cables by spraying, ejecting or dispensing marking fluid
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S118/00—Coating apparatus
    • Y10S118/21—Wire and cord striper

Definitions

  • a band marking apparatus for cables includes an an- Feb. 25, 1972 Germany 2209027 nular nozzle which is normally closed and is opened by the marking material under a predetermined pres- [52] US. Cl 118/8, 118/325, 118/D1G. 21 sure.
  • a proportioning valve operated by the moving [51] Int. Cl. B05c 5/00 cable controls the material applied to the nozzle.
  • the [58] Field of Search 118/325, DIG. 21, 316, nozzle includes two spring-like plates which open 118/8, DIG. 18; 239/534, 535, 559, 567; under pressure.
  • the valve may include a rotary sliding 117/43; 134/199 element providing a pressurized seal or a solenoid valve controlled by a commutator driven by the cable.
  • References Cited v The nozzle plates may also be held closed by electro- UNITED STATES PATENTS magnetic force- 2,533,191 12/1950 Jaeger 239/534 X 5 Claims, 7 Drawing Figures 4 Sheets-Sheet 1 Fig.7
  • the present invention relates to the continuous marking of extruded strands, such as insulated electric cable lines, by spraying colored band marks onto the preferably still hot soft surface of the insulation.
  • German Pat. No. 1,031,851 is of interest in this connection. It has an annular-clearance nozzle which surrounds the moving cable and sprays a stream of color material onto the cable at short time intervals. An excess pressure periodically acts on the fluid color material.
  • the apparatus consists of an annular nozzle, a color material tank, and a pressure capsule which is connected to the nozzle and filled with color material. As a result of a periodically activated diaphragm, an excess pressure communicates with the contents of the nozzle whereby annular color streams directed onto the line are produced for short periods of time.
  • the nozzle has anannular clearance which is always open. Sharply defined colored band marks can be proopening of the nozzle being constantly open. This con stantly open annular nozzle does not insure that the color material contained in the nozzle avoids the affect of the atmosphere.
  • the width of the opening or clearance space of the known annular nozzle must be greater than 0.1 mm because the annular opening tends to clog due to the pigment particle size and the affect of the atmosphere.
  • a width of the annular opening greater than 0.1 mm has the disadvantage of tending to drip, which constantly adversely effects the nozzles action.
  • Another disadvantage of the known apparatus is also attributed to the width of the annular opening. Since the amount of color material per color band to be produced is constant, the spraying time must decrease as the width of the clearance space increases. At an orifice diameter of the nozzle of 2 mm, a clearance width of 0.1 mm, and a color pressure of 4 kgf/cm the spraying time is about l/l0,000 seconds. These short pulse times are not realizable with the cam control described in connection with the known apparatus.
  • the apparatus is relatively inexpensive, requires little maintenance and has short set-up times.
  • no excess color material emerges from the apparatus during operation and the color material does not come into contact with the atmosphere, so that no clogging due to evaporation of the solvent can take place.
  • the apparatus is to be self-purifying in respect of any small amounts of residual color material and safely permit very short spraying times.
  • the novel apparatus includes an annular nozzle which opens automatically under a predetermined internal pressure and is connected, via a pipe, with a color-material tank which is under constant pressure.
  • a color-material-proportioning device is operated and/or controlled by the longitudinally moving extruded strand and is positioned in the pipe.
  • the annular nozzle consists of two spring-like plate elements forming a nozzle chamber.
  • the color-material-proportioning device is a rotary slide valve which consists of a housing with one inlet and at least one outlet and of a rotatably mounted, prestressed sliding element disposed in the housing. The sliding element is connected, via an axle. with a drive pulley driven by the extruded strand.
  • the color-materialproportioning device is a solenoid valve controlled by an electrical pulse generator.
  • the electrical pulse generator consists of a commutator which is coupled with the drive pulley driven by the extruded strand. Two or more of the segments distributed over the circumference of the commutator are short-circuited and connected to brushes which are switched into the electrical circuit of the solenoid valve.
  • the annular nozzle may be controlled by an electromag net.
  • FIG. 1 schematically shows one embodiment of the novel apparatus
  • FIG. 2 schematically shows another embodiment including a solenoid valve controlled by a commutator pulse generator
  • FIG. 3a schematically shows one embodiment of the annular nozzle in cross-section with the nozzle chamber closed
  • FIG. 3b is a side view of the nozzle
  • FIG. 3c is a sectional view of the nozzle chamber open
  • FIG. 4 schematically shows the rotary slide valve serving as the color-material-proportioning device
  • FIG. 5 schematically shows the annular nozzle controlled by an electromagnet.
  • the novel marking apparatus includes the extruded strand 1 to be marked, which is drawn through the center of the annular nozzle 3 in the direction of arrow 2.
  • the annular nozzle is connected with the rotary slide valve 5, serving as the color-material-proportioning device, through a pipe 4.
  • the sliding part of the rotary slide valve 5 is coupled with a drive pulley 6 driven by the extruded strand.
  • the rotary slide valve 5 is connected, via another pipe 7, with a tank 9 filled at least partly with color material 8. Pressure is exerted on the color material in the tank by a gas, such as compressed air, which is under a considerably higher pressure than that of the atmosphere.
  • the gas is fed into the tank via pipe 10 and a pressure relief valve 11 from another source (not shown).
  • a pressure relief valve 11 from another source (not shown).
  • FIG. 2 shows an apparatus similar to that of FIG. 1 with the corresponding components being designated by the same reference numerals.
  • the color-material-proportioning device is a solenoid valve 12 controlled by an electrical pulse generator.
  • the pulse generator is a commutator which is coupled with the drive pulley 6. Some of the commutator segments 13 are short-circuited by means of conductive connections 14. Arranged on the commutator segments are brushes 15, which are in the circuit feeding the solenoid electromagnet.
  • the solenoid valve is controlled synchronously with the running speed of the extruded strand, so that, irrespective of the speed of the strand, the band marks can be produced thereon at the desired regular intervals.
  • FIGS. 3a to Sc show the novel annular nozzle 3, which consists of two spring-like plate elements 16 which enclose a ring-shaped nozzle chamber 17 always filled with color material. Because of the inherent mechanical tension of the plate elements, the annular nozzle aperture 18 is always closed when the pressure of the color material in the nozzle chamber 17 does not exceed a predetermined pressure. When this pressure is exceeded, the spring-like plates 16 are forced apart and the nozzle aperture 18 opens (FIG. 3c), allowing the color material to discharge at a speed in accordance with the pressure.
  • FIG. 4 shows the rotary slide valve 5, which, in one embodiment of the invention, serves as the color-material-proportioning device and consists of the housing 20 and the sliding element 21.
  • the housing 20 is provided with an inlet 22 and several outlets 23 for the color material.
  • the rotary slide valve is self-sealing since the more the pressure of the color material increases, the more th packing surfaces are pressed against each other. This action also automatically compensates for wear.
  • the outlets 23 may also be equipped with valves, so that the desired number and density of the color bands per unit length of the extruded strands can be varied by closing or opening certain valves.
  • a speed governor which stops the supply of color material when the extruded strand is at a standstill may be coupled with the drive pulley 6.
  • FIG. 5 shows another embodiment of the apparatus in which the annular nozzle 3, previously illustratd in FIG. 3, is controlled by an electromagnet.
  • the latter consists of the coil 24, generating the magnetic flux, and the housing 25 of ferromagnetic material, which enclose the nozzle.
  • the circumference of the annular nozzle is closed with a ring 26 of non-ferromagnetic material.
  • the electromagnet when energized, produces the force indicated by the arrows 27, which cause the spring-like plate elements of the annular nozzle to close due to electromagnetic action in addition to mechanical force.
  • the combined mechanical and electromechanical force action should be greater than the color material pressure tending to open the plates.
  • the nozzle aperture opens. Following excitation of the electromagnet, the nozzle aperture closes again. In this manner, the times during which the annular nozzle is open can be reduced even further.
  • An apparatus'for marking a longitudinal strand comprising means feeding said strand in a longitudinal path, an annular nozzle having an annular chamber surrounding said strand for spraying marking material inwardly onto said strand moving through the center of said nozzle, the inner end of said chamber having a normally closed inwardly facing annular aperture which opens automatically under a predetermined internal material pressure, a container of marking material under a predetermined constant pressure, a pipe connected between said container and nozzle to apply said material under pressure to said nozzle, and a valve device coupled to the longitudinally moving strand and connected within said pipe to control said material applied to said nozzle and strand in accordance with the speed of movement of said strand.
  • annular chamber includes two facing engaging springlike plate elements maintaining said aperture in a normally closed position, said plates separating to open said aperture and permit said material to flow therethrough upon reaching said predetermined pressure.
  • valve device is a rotary slide valve including a housing having one inlet and at least one outlet and of a rotatably mounted sliding element disposed in the housing and pressed against the housing surfaces by the pressure of said material, and a drive pulley driven by the strand, said sliding element being rotatably coupled to said drive pulley.
  • valve device is a solenoid valve, and includes an electrical pulse generator for controlling said valve and a drive pulley driven by the strand and coupled to said pulse generator, said pulse generator including a commutator rotatably coupled to said drive pulley, said commutator having a plurality of short circuited segments distributed over the circumference, and brushes on the commutator electrically connecting said commutator to said solenoid valve.
  • An apparatus including an electromagnet around said nozzle for maintaining saidd plate elements in a normally closed position.
US326216A 1972-02-25 1973-01-24 Apparatus for marking insulated cables Expired - Lifetime US3858544A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2209027A DE2209027A1 (de) 1972-02-25 1972-02-25 Vorrichtung zur fortlaufenden kennzeichnung von strangfoermigen gebilden

Publications (1)

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US3858544A true US3858544A (en) 1975-01-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
US326216A Expired - Lifetime US3858544A (en) 1972-02-25 1973-01-24 Apparatus for marking insulated cables

Country Status (12)

Country Link
US (1) US3858544A (xx)
JP (1) JPS4895571A (xx)
AT (1) AT316674B (xx)
AU (1) AU5233173A (xx)
BE (1) BE795821A (xx)
BR (1) BR7301218D0 (xx)
CH (1) CH548231A (xx)
DE (1) DE2209027A1 (xx)
ES (1) ES411962A1 (xx)
FR (1) FR2173219B3 (xx)
GB (1) GB1366267A (xx)
IT (1) IT979260B (xx)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61173411A (ja) * 1985-01-25 1986-08-05 日立電線株式会社 線状体被覆層の着色方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2533191A (en) * 1946-08-26 1950-12-05 Jaeger Machine Co Water distributing device for mixers
US3136649A (en) * 1961-02-23 1964-06-09 Kimberly Clark Co Manufacture of cellulosic products

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2533191A (en) * 1946-08-26 1950-12-05 Jaeger Machine Co Water distributing device for mixers
US3136649A (en) * 1961-02-23 1964-06-09 Kimberly Clark Co Manufacture of cellulosic products

Also Published As

Publication number Publication date
AU5233173A (en) 1974-08-22
AT316674B (de) 1974-07-25
ES411962A1 (es) 1976-01-01
BR7301218D0 (pt) 1974-02-19
CH548231A (de) 1974-04-30
FR2173219B3 (xx) 1976-02-13
BE795821A (fr) 1973-08-23
FR2173219A1 (xx) 1973-10-05
JPS4895571A (xx) 1973-12-07
IT979260B (it) 1974-09-30
DE2209027A1 (de) 1973-08-30
GB1366267A (en) 1974-09-11

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Legal Events

Date Code Title Description
AS Assignment

Owner name: ALCATEL N.V., DE LAIRESSESTRAAT 153, 1075 HK AMSTE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:INTERNATIONAL STANDARD ELECTRIC CORPORATION, A CORP OF DE;REEL/FRAME:004718/0023

Effective date: 19870311