US3722818A - Gas cutting and marking device - Google Patents

Gas cutting and marking device Download PDF

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Publication number
US3722818A
US3722818A US00121325A US3722818DA US3722818A US 3722818 A US3722818 A US 3722818A US 00121325 A US00121325 A US 00121325A US 3722818D A US3722818D A US 3722818DA US 3722818 A US3722818 A US 3722818A
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US
United States
Prior art keywords
gas
cutting
oxygen
marking
way valve
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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
US00121325A
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English (en)
Inventor
H Hayasaki
T Hayashi
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.)
Tanaka Manufacturing Co Ltd
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Tanaka Manufacturing Co Ltd
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Filing date
Publication date
Application filed by Tanaka Manufacturing Co Ltd filed Critical Tanaka Manufacturing Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K7/00—Cutting, scarfing, or desurfacing by applying flames
    • B23K7/08—Cutting, scarfing, or desurfacing by applying flames by applying additional compounds or means favouring the cutting, scarfing, or desurfacing procedure

Definitions

  • ABSTRACT A device for gas cutting, which is also applicable for marking by operating a valve so as to eject a mixed stream of carrier gas such as air and marking powder such as metal powder from an ejecting nozzle usually used for ejection of cutting oxygen.
  • the device can be used either for-gas cutting or for making a cutting line by a very simple switching operation.
  • the present invention relates to a device for gas cutting and marking, more particularly to a device applicable for the both purposes by a very simple switching operation.
  • FIG. 1 is a schematical cross sectional view for explaining the principle of the present invention
  • FIG. 2 is a diagram partly in section showing the main portion of the gas cutting and marking device according to the present invention.
  • FIG. 3 is a more detailed cross sectional view of the" blow pipe and nozzleportion of the device.
  • FIG. 4 is a simplified diagram showing a practical application of the device according to the present invention to an automatic gas cuttingmach ine'.
  • FIG. 1 is a view illustrating principle of the operation of the device according to the invention when the cutting device is used for marking.
  • 1 generally shows the top portion of a nozzle of'gas cutting and marking device, which comprises a central hole 2 used for ejecting cutting oxygen in case the device is used for gas cutting. Passageway 3 for preheating flame is arranged about the central hole 2 same as an ordinary gas cutting device.
  • mixed gas stream consisting of carrier gas such as for instance, oxygen,-air, nitrogen,-car bon dioxide, argon, etc. and fusible powder of metal, such as, zinc, aluminum, tin, copper, iron, magnesium, etc. or plastic powder is ejected from the central hole 2 and at the same time burning flame 5 and 6 consisting of mixed gas of oxygen and acetylene, etc. surrounding the central ejecting stream 4 is blown to the work piece 7.
  • flame 5 and 6 consisting of mixed gas of oxygen and acetylene, etc. surrounding the central ejecting stream 4 is blown to the work piece 7.
  • a very clear thin marked line is fused onto the work piece 7. If the nozzle is moved along a line of predetermined pattern, contour of a desired cutting line is reproduced onto the work piece.
  • control of movement of the nozzle may conveniently be carried out by combining the nozzle with a numerical controlling system.
  • FIG. 2 is an explanatory diagram showing the essential portion of the device according to the present invention.
  • FIG. 3 is a slightly enlarged diagram showing a more detailed cross-section of the blow pipe and nozzle portion of the device.
  • the nozzle 1 is secured at an opening end of the blow pipe 9 by means of a fastening nut 8.
  • the construction of FIG. 3 is just the same as an ordinary gas cutting nozzle attached with a blow pipe.
  • the cutting oxygen is introduced through a supply hole 13 and fed through a central bore 10 to the central ejecting outlet hole 2.
  • the fuel gas is introduced into the blow pipe via a feeding hose 14 and fed through a passageway 11 and then 'carried by preheating oxygen stream which is fed through a feeding hose 15 and passageway 12 to form a mixed burning gas and ejected through the passageway 3 around the central oxygen stream.
  • This construction of the cutting device is well known in the art and need not be discussed in more detail.
  • a three-way valve 16 having three openings A, B and C is inserted between the route of feeding oxygen hose 13. As indicated in FIG. 2, the cutting oxygen feeding hose 13 leading to the blow pipe 9 is connected to the opening C and the hose 13' located at further source side is connected to the opening A. Also, a three-way joint 17 is inserted between the hose 13' and the hose 13" which above mentioned fusible powder 20 and, has its upper closed lid 21a to form a closed chamber. The lid 21a is provided with an opening which is connected to a hose- 22 which in turn is connected to the opening B of the three-way valve 16.
  • the hose 18, the nozzle 19 and hose 22 consist a branch way passing through the dispenser 21.
  • three-way valve 16 comprises a valve element 16a controlled by a switching handle 16b.
  • the rotating handle 16b is rotated up to the position D indicated by a chain line so that the opening A of the three-way valve is connected to the opening C.
  • the gas cutting operation is effected in a usual-manner.
  • the handle 16b is operated .to come in a position shown in FIG. 2. Then the opening A is closed and the opening B is connected to the opening C, so that the above mentioned branch route becomes effective.
  • the cutting oxygen fed through the hose 18 is ejected into the closed space of the dispenser 21.
  • the fusible powder contained in the dispenser 21 is blown by the ejected stream so that a mixed stream is formed. This stream is fed into the blow pipe 9 via the hose 22 and then through the openings B and C and the hose 13.
  • This mixed stream is ejected from the central hole 2 as illustrated in FIG. 1, and the powder is heated by the surrounding preheating flame ejected from passageway 3 and marks a fused line onto the work piece 7.
  • the pressure of oxygen need not be so high as that for the time of cutting since this oxygen is just for use as a carrier gas of the fusible powder.
  • Such necessary control of the pressure of the feeding oxygen can easily be effected in a known manner at the supplying device (not shown). Also the flow rate of the surrounding preheating flame can be decreased when compared with that for use in an ordinary gas cutting.
  • the oxygen carrier gas may be replaced by air, nitrogen, carbon dioxide, argon, etc. considering a suitable combination of the gas and the nature of the powder.
  • FIG. 4 shows a practical application of the present invention for an automatic gas cutting device so asto use the device for gas cutting and also automatic marking.
  • 23 shows guide rails
  • 24 is the frame of the device
  • 25 is a tracing surface plate
  • 26 is an eyetracer
  • 27 is a moving desk
  • 28 is a work piece such as a steel plate.
  • four sets of blow pipe 9 and nozzle 1 are shown. All of these nozzles are conveniently controlled to effect both marking and gas cutting by attaching them to dispenser set 21 in the manner previously set forth.
  • the device according to the present invention has an essential feature of enabling very rapid switching of the operation between marking and cutting since the nozzle can be used for the both purposes.
  • a numerical controlled gas cutting device may conveniently be used by marking in the programmed control tape indicating programmed changing points of effecting changeover between the marking and the gas cutting.
  • the same hole of the nozzle for cutting'oxygen is used for ejecting the mixed marking stream, so that the marked line and the cutting line reproduced from a same original figure or a programmed tape may coincide completely with each other.
  • the marking speed can be made in an order of 0.5- meters per minute.
  • the gas cutting speed is much lower, for instance, in an order of 0.2-0.7 meter per minute. Accordingly, a plurality of steel plates can be treated to provide marking by means of a single gas cutting and marking device very rapidly. Then the working pieces may be cut by other simple cutting machine with automatic or manual tracing. Meanwhile, the main automatic cutting machine may also be used for the same cutting work according to the need.
  • the present invention affords a great advantage in an application for highly accurate and highly efficient cutting of a plurality of work pieces.
  • the ejected jet stream of the mixture can be kept in a form comparative to the ejecting nozzle.
  • the width of a marking line obtained in accordance with the present invention is about 0.8 times the inner diameter of the ejected stream. If a nozzle having ejecting hole diameter of 1.0 millimeter is used, a marking line having its width less than 0.8 millimeter can be obtained. A marking line having width less than 1.3 millimeter can be obtained by using a nozzle having a diameter of 1.6 millimeter.
  • the marking line is not only very clear, but it is rigidly secured to the marked surface and may not be removed even if it is placed in water or is subjected by very hard friction.
  • a gas cutting and marking device comprising:
  • a nozzle having a central ejecting hole and a surrounding passageway
  • a dispenser for fusible powder having an inlet and an outlet
  • said three-way valve permitting the switching of the device between a marking mode, in which the carrier gas can pass throughsaid dispenser and said three-way valve to said nozzle, and a gas-cutting mode, in which the oxygen from said oxygen source can pass through said three-way valve to said nozzle.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Gas Burners (AREA)
  • Nozzles (AREA)
US00121325A 1970-03-19 1971-03-05 Gas cutting and marking device Expired - Lifetime US3722818A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP45022696A JPS4919515B1 (en:Method) 1970-03-19 1970-03-19

Publications (1)

Publication Number Publication Date
US3722818A true US3722818A (en) 1973-03-27

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ID=12090021

Family Applications (1)

Application Number Title Priority Date Filing Date
US00121325A Expired - Lifetime US3722818A (en) 1970-03-19 1971-03-05 Gas cutting and marking device

Country Status (7)

Country Link
US (1) US3722818A (en:Method)
JP (1) JPS4919515B1 (en:Method)
CA (1) CA927736A (en:Method)
DE (1) DE7109493U (en:Method)
FR (1) FR2084826A5 (en:Method)
GB (1) GB1274170A (en:Method)
SE (1) SE379659B (en:Method)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4247043A (en) * 1978-04-29 1981-01-27 Messer Griesheim Gmbh Device for marking workpieces by means of powder
US4434935A (en) 1978-04-29 1984-03-06 Messer Griesheim Gmbh Powder, especially metallic powder for marking workpieces
US5230470A (en) * 1991-06-19 1993-07-27 Alberta Research Council Flame spray applicator system
US5251822A (en) * 1992-12-31 1993-10-12 Wang Hsing Tzu Spray paint gun
US5283123A (en) * 1989-05-03 1994-02-01 Carter Deborah H Adsorption material and method
US6168781B1 (en) * 1997-03-17 2001-01-02 Kao Corporation Spraying apparatus for artificial hair augmenting agent
US20200113171A1 (en) * 2018-10-12 2020-04-16 Deere & Company Multi-fluid spray system and method for agricultural product application
US20200113170A1 (en) * 2018-10-12 2020-04-16 Deere & Company Multi-fluid spray system and method for agricultural product application

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60187260U (ja) * 1984-05-24 1985-12-11 帝国ヒユ−ム管株式会社 コンクリ−ト製防護柵

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4247043A (en) * 1978-04-29 1981-01-27 Messer Griesheim Gmbh Device for marking workpieces by means of powder
US4434935A (en) 1978-04-29 1984-03-06 Messer Griesheim Gmbh Powder, especially metallic powder for marking workpieces
US5283123A (en) * 1989-05-03 1994-02-01 Carter Deborah H Adsorption material and method
US5230470A (en) * 1991-06-19 1993-07-27 Alberta Research Council Flame spray applicator system
US5251822A (en) * 1992-12-31 1993-10-12 Wang Hsing Tzu Spray paint gun
US6168781B1 (en) * 1997-03-17 2001-01-02 Kao Corporation Spraying apparatus for artificial hair augmenting agent
US20200113171A1 (en) * 2018-10-12 2020-04-16 Deere & Company Multi-fluid spray system and method for agricultural product application
US20200113170A1 (en) * 2018-10-12 2020-04-16 Deere & Company Multi-fluid spray system and method for agricultural product application
US10842143B2 (en) * 2018-10-12 2020-11-24 Deere & Company Multi-fluid spray system and method for agricultural product application
US11051505B2 (en) * 2018-10-12 2021-07-06 Deere & Company Multi-fluid spray system and method for agricultural product application

Also Published As

Publication number Publication date
SE379659B (en:Method) 1975-10-20
DE2112083A1 (de) 1971-10-07
DE2112083B2 (de) 1972-10-26
GB1274170A (en) 1972-05-17
CA927736A (en) 1973-06-05
FR2084826A5 (en:Method) 1971-12-17
JPS4919515B1 (en:Method) 1974-05-17
DE7109493U (de) 1973-11-29

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