US3654970A - Device for feeding powdered material - Google Patents

Device for feeding powdered material Download PDF

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Publication number
US3654970A
US3654970A US32178A US3654970DA US3654970A US 3654970 A US3654970 A US 3654970A US 32178 A US32178 A US 32178A US 3654970D A US3654970D A US 3654970DA US 3654970 A US3654970 A US 3654970A
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US
United States
Prior art keywords
spoon
die
cylinder
sleeve
powder
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
US32178A
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English (en)
Inventor
Albert Teboul
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
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Publication of US3654970A publication Critical patent/US3654970A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G13/00—Weighing apparatus with automatic feed or discharge for weighing-out batches of material

Definitions

  • a device for automatically supplying successive charges of powder to the die of a press comprises a spoon carried by a Apr. 30, 1969 France ..69l3828 flexible Strip fitted with a strain gage associated wiih an ap paratus for continuous weighing of the spoon and a vibratory [52] U.S. Cl ..l41/284, 164/ 155, 164/336, f d f pouring h Powdered material progressively into 177/62 177/108 222/77 222/363 the spoon.
  • the primary object of the invention is to provide a device for automatically supplying powdered material to a press in charges of constant weight so that said material can occupy a variable volume within the die chamber in the event that it should have poor flowability.
  • This device makes it possible to employ any powder irrespective of its flowability and to ensure that the properties and especially the raw state density of the end product are more reproducible than has been the case heretofore by virtue of the fact that the operation is carried out with charges of constant weight and not of constant volume.
  • Said traction rods 22 are attached to a head 26 which is adapted to carry a lug 28 for controlling limiting switches 30 and 32 whose function will become apparent hereinafter.
  • a sleeve 34 fitted with a guide pin 36 which is slidably engaged in a skew groove 38, said groove being formed for this purpose in a cylinder 40 which constitutes an extension of the jack body.
  • a flexible strip 42 is attached to the sleeve 34 , the extremity of which is adapted to carry a spoon 44.
  • the strip 42 is parallel to the axis of displacement of the moving system over the major part of its length and has an elbowed end portion in order that the edge of the spoon 44 should be located at the level of the axis of the jack 14.
  • a strain gage 62 is carried by the strip 42 near the point of attachment of this latter to the sleeve 34 and constitutes the sensitive element of a device for weighing the spoon 44 as shown diagrammatically in FIG. 3.
  • This device comprises a measuring instrument 64 and a trip relay 66 which delivers a signal when the weight of the spoon attains a predetermined value which is adjustable by means of a selector switch 68.
  • the measuring instrument 64 is associated with a stripchart recorder 70 which, though not an essential element, does facilitate checking of correct operation.
  • FIG. 3 shows the components in their initial positional arrangement, the punches 82 and 84 being thus located at the end of the range of travel resulting in compression of the pellet 80 which is contained within the chamber 18.
  • the vibrating distributor 74 is excited and the powder contained in the hopper 76 is discharged into the spoon 44 which is maintained by the jack in the rear end position (namely in the extreme right-hand position shown in the figures).
  • the measuring instrument 74 provides a continuous determination of the weight of powder contained in the spoon, said weight being marked on the recorder 70.
  • the relay 66 operates, trips the vibrating distributor 74 and actuates an electromagnetic valve 86 (shown in FIG. 3) by means of the system 72.
  • Said valve supplies the jack so as to cause the forward motion of the moving system which comprises the head 26 and the spoon 44
  • the punches 82 and 84 must move so as to extract the pellet of powder which has just been compressed within the die chamber.
  • the punch 82 moves upwards and is followed by the punch 84 which comes level with the top face of the die and ejects the pellet 80.
  • FIG. 5 This relative arrangement is illustrated in FIG. 5 and corresponds to a displacement of the moving system from its starting position such that the annular boss 58 comes into contact with the stop 60. From this moment, the head 26 and the spoon 44 are capable of displacement only with respect to the pin 46 while compressing the spring 48.
  • the spoon 44 advances over the distance L while carrying out a pivotal movement, the sleeve 34 being driven in rotation by means of the skew groove 38.
  • the lug 28 closes the switch 30 (shown in FIG. 1) which initiates the operation of the vibrator of the funnel 52 and stopping of the jack.
  • the duration of this vibration is established by the timing or programming circuit 72 of conventional type. At the end of this cycle, the circuit 72 reverses the electrovalve 86 and initiates the operation of the jack 13 in a direction corresponding to the movement of withdrawal of the head 26.
  • Said head returns from the position shown in FIG. 6 to the initial charging position (as shown by the arrow j in FIG. 7).
  • the upper punch 82 begins to move downwards towards the die chamber 78.
  • the spoon returns to the charging position as illustrated in FIG. 3, the lug closes the switch 32 and thereby automatically initiates a further cycle.
  • a device of the type described above has been constructed for the purpose of fabricating pellets of uranium oxide or mixed uranium and plutonium oxide, said pellets being intended to be employed as nuclear fuel.
  • the weights specified were maintained with a degree of precision which was higher than 1 percent and the rate of production was seven pellets per minute. Much higher rates can be obtained if necessary by increasing the number of die chambers and correlatively the number of feed spoons.
  • the invention makes it possible to solve the problems associated with the use of materials provided in the form of powder which exhibits poor flowability while entailing only relatively simple arrangements and rugged means.
  • the device according to the invention can be perfectly integrated with a fully automatic, continuousproduction line and can in fact be controlled by the displacement of the press punches.
  • said guiding means comprises a pin secured to said sleeve and engaging a skew groove formed in said cylinder.
  • a device additionally comprising a funnel connected by resilient means to said jack for axial movement and stationary abutment means for retaining the funnel above the die and between said die and spoon upon actuation of the jack.
  • control means comprises means for manually adjusting said predetermined value and a trip relay adapted to delivers a signal which deactivates a vibratory feeder constituting said feeder means.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Powder Metallurgy (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Press Drives And Press Lines (AREA)
  • Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
US32178A 1969-04-30 1970-04-27 Device for feeding powdered material Expired - Lifetime US3654970A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR696913828A FR2041014B1 (da) 1969-04-30 1969-04-30

Publications (1)

Publication Number Publication Date
US3654970A true US3654970A (en) 1972-04-11

Family

ID=9033321

Family Applications (1)

Application Number Title Priority Date Filing Date
US32178A Expired - Lifetime US3654970A (en) 1969-04-30 1970-04-27 Device for feeding powdered material

Country Status (8)

Country Link
US (1) US3654970A (da)
JP (1) JPS4910029B1 (da)
BE (1) BE749807A (da)
CH (1) CH512950A (da)
DE (1) DE2021080B2 (da)
ES (1) ES379153A1 (da)
FR (1) FR2041014B1 (da)
GB (1) GB1257891A (da)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3885716A (en) * 1972-04-25 1975-05-27 Lafarge Ciments Sa Appliance to measure out a given volume of powder
US4010876A (en) * 1974-04-09 1977-03-08 Georg Fischer Aktiengesellschaft Arrangement for the delivery of measured quantities of the molten contents of a storage vessel
US4070240A (en) * 1977-02-02 1978-01-24 Westinghouse Electric Corporation Seal containment system
US4382527A (en) * 1977-09-14 1983-05-10 Automated Packaging Systems, Inc. Article handling system with dispenser
US4669634A (en) * 1981-08-04 1987-06-02 Roussel Uclaf Apparatus and process for the metering of predetermined quantities of at least one product
US4715412A (en) * 1985-08-22 1987-12-29 Bemis Company, Inc. Method and apparatus for check-weighing charges for containers
US5158129A (en) * 1990-08-27 1992-10-27 Sollac Method and device for feeding a powdered or granular material into a continuous casting mold
US5544683A (en) * 1993-12-18 1996-08-13 Bruker Analytische Messtechnik Gmbh Sample filling device
US6091028A (en) * 1997-10-27 2000-07-18 Ykk Corporation Powder/chip weighing method
US6121556A (en) * 1999-01-26 2000-09-19 Cole; Brand D. Granular material weighing system
US6881048B1 (en) * 1999-03-31 2005-04-19 Sumitomo Coal Mining Co., Ltd. Apparatus for automatically loading powder material into a mold
US9599442B2 (en) 2014-03-03 2017-03-21 Adr International Limited Automatic apparatus for high speed precision portioning of granules by weight
US20170165750A1 (en) * 2015-12-15 2017-06-15 Denso Corporation Powder supply apparatus
CN107777646A (zh) * 2016-08-31 2018-03-09 天津市津冠润滑脂有限公司 润滑脂灌装设备机
CN111606065A (zh) * 2020-05-23 2020-09-01 虔东稀土集团股份有限公司 一种粉末加料的方法和装置
CN115475940A (zh) * 2022-09-22 2022-12-16 厦门市力立粉末冶金有限公司 一种上料装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3916868C2 (de) * 1989-05-24 1995-10-12 Scheurich Gmbh & Co Elektronik Waage mit einer drehbar gelagerten Lastschale
GB2495961B (en) * 2011-10-26 2017-06-14 G B Innomech Ltd Apparatus and method for dispensing powder

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2892225A (en) * 1954-06-23 1959-06-30 Buhrer Erwin Process and means for casting system for operating pouring ladles
US3537156A (en) * 1968-01-03 1970-11-03 Ercell L Glass Apparatus for filling molds

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2892225A (en) * 1954-06-23 1959-06-30 Buhrer Erwin Process and means for casting system for operating pouring ladles
US3537156A (en) * 1968-01-03 1970-11-03 Ercell L Glass Apparatus for filling molds

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3885716A (en) * 1972-04-25 1975-05-27 Lafarge Ciments Sa Appliance to measure out a given volume of powder
US4010876A (en) * 1974-04-09 1977-03-08 Georg Fischer Aktiengesellschaft Arrangement for the delivery of measured quantities of the molten contents of a storage vessel
US4070240A (en) * 1977-02-02 1978-01-24 Westinghouse Electric Corporation Seal containment system
US4382527A (en) * 1977-09-14 1983-05-10 Automated Packaging Systems, Inc. Article handling system with dispenser
US4669634A (en) * 1981-08-04 1987-06-02 Roussel Uclaf Apparatus and process for the metering of predetermined quantities of at least one product
US4715412A (en) * 1985-08-22 1987-12-29 Bemis Company, Inc. Method and apparatus for check-weighing charges for containers
US5158129A (en) * 1990-08-27 1992-10-27 Sollac Method and device for feeding a powdered or granular material into a continuous casting mold
US5544683A (en) * 1993-12-18 1996-08-13 Bruker Analytische Messtechnik Gmbh Sample filling device
US6091028A (en) * 1997-10-27 2000-07-18 Ykk Corporation Powder/chip weighing method
US6121556A (en) * 1999-01-26 2000-09-19 Cole; Brand D. Granular material weighing system
US6881048B1 (en) * 1999-03-31 2005-04-19 Sumitomo Coal Mining Co., Ltd. Apparatus for automatically loading powder material into a mold
US20050089436A1 (en) * 1999-03-31 2005-04-28 Sumitomo Coal Mining Co., Ltd. Method and apparatus for automatically loading powder material into a mold
US9599442B2 (en) 2014-03-03 2017-03-21 Adr International Limited Automatic apparatus for high speed precision portioning of granules by weight
US10012484B2 (en) 2014-03-03 2018-07-03 Adr International Limited Method of improving the accuracy of rifle ammunition
US10386162B2 (en) 2014-03-03 2019-08-20 Adr International Limited Automatic apparatus for high speed precision portioning of granules by weight
US20170165750A1 (en) * 2015-12-15 2017-06-15 Denso Corporation Powder supply apparatus
US9943906B2 (en) * 2015-12-15 2018-04-17 Denso Corporation Powder supply apparatus
CN107777646A (zh) * 2016-08-31 2018-03-09 天津市津冠润滑脂有限公司 润滑脂灌装设备机
CN111606065A (zh) * 2020-05-23 2020-09-01 虔东稀土集团股份有限公司 一种粉末加料的方法和装置
CN115475940A (zh) * 2022-09-22 2022-12-16 厦门市力立粉末冶金有限公司 一种上料装置
CN115475940B (zh) * 2022-09-22 2024-01-30 厦门市力立粉末冶金有限公司 一种上料装置

Also Published As

Publication number Publication date
ES379153A1 (es) 1973-04-01
DE2021080B2 (de) 1971-06-16
FR2041014A1 (da) 1971-01-29
FR2041014B1 (da) 1974-06-14
CH512950A (fr) 1971-09-30
DE2021080A1 (de) 1970-11-26
JPS4910029B1 (da) 1974-03-07
GB1257891A (da) 1971-12-22
BE749807A (fr) 1970-10-01

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