EP0113504A1 - Verfahren und Vorrichtung zum gleichmässigen Verteilen von Rückstandsschmiermittel in Behältern - Google Patents

Verfahren und Vorrichtung zum gleichmässigen Verteilen von Rückstandsschmiermittel in Behältern Download PDF

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Publication number
EP0113504A1
EP0113504A1 EP83306341A EP83306341A EP0113504A1 EP 0113504 A1 EP0113504 A1 EP 0113504A1 EP 83306341 A EP83306341 A EP 83306341A EP 83306341 A EP83306341 A EP 83306341A EP 0113504 A1 EP0113504 A1 EP 0113504A1
Authority
EP
European Patent Office
Prior art keywords
container
lubricant
inside surfaces
containers
distribution means
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.)
Withdrawn
Application number
EP83306341A
Other languages
English (en)
French (fr)
Inventor
Thomas E. Hlobil
Richard J. Karas
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.)
Primerica Inc
Original Assignee
American Can Co
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 American Can Co filed Critical American Can Co
Publication of EP0113504A1 publication Critical patent/EP0113504A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/06—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies
    • B05B13/0618—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies only a part of the inside of the hollow bodies being treated

Definitions

  • This invention relates to method and apparatus for uniformly dispersing residual lubricant inside container bodies; once the lubricant has been dispersed, inside coatings can successfully be applied.
  • Containers may be made by a drawing operation which converts a flat disk of metal into a thin hollow cup having a height greater than its diameter.
  • the metal may be tinplate, tin free steel, aluminium or black plate, with or without an organic precoating. Sometimes a postcoating is required to ensure complete coating continuity to protect the metal and the materials to be packed in the container from interacting.
  • lubricants used in the process can collect on tool surfaces so that small lubricant residuals are left on the inside container surface and/or accumulations of lubricant on the tool can drip into the drawn container.
  • the resulting areas of high lubricant concentration can be visually unattractive after postcoating, and can prevent effective postcoating resulting in discontinuities such as eyeholing, postcoating dewetting, and the like.
  • the quality of the postcoating can be measured by a "quick test".
  • a specified piece of equipment is required. More particularly, a Model 1071 WACO Enamel Rater with a O to 1 milliamp attachment is used.
  • the apparatus has an electrode which is adapted to move vertically in and out along the axis of a container body positioned beneath it.
  • the container is held in position by a vise-like device which clamps about its bottom, the open top end of the container facing upwardly toward the electrode.
  • the container is filled with 2% solution of sodium sulfate and allowed to soak for at least 30 seconds before the electrode is dropped.
  • the electrode is inserted until it is about 1" (2.5 cm) from the bottom of the container.
  • the solution temperature should be maintained between 72 to 78°F (22 to 25°C) and should so fill the container that when the electrode is lowered into the test position, the solution will reach approximately 1/8" (3 mm) below a top flange radius at the open end of the container. Care should be taken to avoid wetting the flange since that will result in a false high reading.
  • the milliamp meter of the tester is connected to the vise-like device and to the electrode. A zeroing of the instrument is required and the operator adjusts until the milliamp meter reads "T" on the scale. Shortly after zeroing the meter a warning light comes on and the reading should be taken immediately. When this procedure was applied to the containers postcoated over the draw lubricant, readings, in the range of O to 3 milliamps are desired and are indicative of properly coated containers. Should a container fail the quick test, the postcoating will be ineffectively protective.
  • Postcoating is required in certain circumstances, all of which relate to the desired shelf-life of the packed and processed container. Certain comestibles are aggressive and attack the metal readily; they therefore require postcoating to prevent degradation of the metal. Similarly, some metals do not precoat well and need a repair postcoating. Moreover, certain processes for drawing a container, such as those including ironing tend to scuff or injure the precoating and then postcoating is desirable for repair. Any combination of the foregoing factors will increase the need for a postcoating operation.
  • Certain drawing lubricant combinations can be postcoated, but only if the residual lubricant is uniformly and thinly distributed within the completed, drawn container.
  • the beader rolls reinforcing convolutions into the side wall of the drawn container.
  • Conveyors such as gravity tracks and elevators move the containers from the press to the beader and from the beader to postspraying equipment.
  • a lance sprayer is used to achieve proper inside coverage. Preferably 20 to 40 mg per 4 sq. in.
  • an apparatus for uniformly dispersing residual lubricant remaining within a container having a hollow, thin-wall cylindrical body with one open end said apparatus being characterised by means for receiving and holding the container body while rotating it about the central axis thereof, a member adapted to move along the said axis in reciprocal fashion briefly to conjugate with the inside surfaces of the container body, and distribution means carried by the said member for contacting the inside surfaces of the body for uniformly spreading lubricant about the said inside surfaces.
  • the container rotates such that its surface speed is somewhere between 1,000 and 2,000 feet per minute (305 to 610 m/min).
  • the said member penetrates the container and, carrying the distribution means, causes the residual lubricant to be spread thinly and uniformly about the inside surfaces of the container.
  • the container in normal fashion is then moved to the next station of the lance sprayer wherein the postcoating is applied at the prescribed rate for the material used.
  • the residual lubricant distribution means or spreader may be fashioned of a variety of materials or a combination thereof.
  • it may comprise a multibristle cylindrical brush, a nap-like roller device, a swab or any combination of these or similar materials.
  • the particular design or configuration of the distribution means is selected to reach all the internal surfaces and crevices of a beaded, thin hollow cylindrical walled drawn container to attain uniformity of spreading.
  • the mounting of the apparatus at a first lance station of the sprayer machine assures the redistribution of lubricant immediately prior to the spraying operation.
  • a method of distributing residual lubricant resulting from the forming of a container body by drawing and redrawing, and in particular the lubricant remaining upon the inside surface of the body characterised by the steps of:
  • the containers may be fashioned as explained herein by a drawing and ironing press wherein the sheet stock is converted into containers the depths of which are usually greater than the diameters.
  • the containers are then conveyed to and passed through a rotary beader in which side wall corrugations are added, and are lined up for a postspraying machine.
  • a rotary beader in which side wall corrugations are added, and are lined up for a postspraying machine.
  • a machine namely the CANCO Body Spraying Machine type RWS Serial No. 136 postspraying machine has been modified to perform two operations with each pass or cycle of the lancing apparatus of the sprayer. More specifically, the spraying apparatus holds two containers and rotates them at high speeds beneath a lubricant dispersing station and a spraying station which selectively operate with each lance or plunge cycle of the apparatus into the containers.
  • the motion of the spraying head 10 is controlled by a support 11 which also carries a cylindrical brush 12 rigidly mounted at 12a thereto.
  • the brush 12 shown in the Figures is illustrative of one example of the practice of the invention. Successful use has been made of a nap-like paint roller-type dispersion device all similarly mounted as brush 12, a foam cyclindrical swab and adaptations of foam to rollers and brushes for purposes of enhanced treating of the inside bottom of a container 13.
  • any suitable spreading device which can be lanced into and out of the rotating container (as shown in Figures 1 to 6) would effectively distribute residual lubricant left after drawing and redrawing, particularly where ironing is included as part of the container forming operation.
  • Containers formed with ironed sidewalls tend to have an area of highly concentrated forming lubricant (whether the lubricant was included in an organic precoating or whether it was applied separately to the material before or during the drawing and redrawing operation). That is to say that, forming with ironing generates a high level of stress and working upon the side walls of the container which in effect squeegees the excess oil to the point at which ironing terminates. More particularly, the side walls are generally ironed up to the flange or a slight distance therebelow and as a consequence lubricant may not be uniformly distributed about that area.
  • a spraying head lOa begins to distribute postcoating into one container 13 which has already been treated by the brush 12 in the preceding adjacent station. More specifically, the container is first aligned with the brush 12 at the first operating station after which it is shifted to the second operating station. There, the container is sprayed by the spraying head lOa in the steps shown in Figures 5 and 6.
  • Figure 7 shows schematically the brush 12 and the spray head lOa removed from the containers 13 thus permitting the containers 13 to be indexed, or shifted, to the right whereby the container 13 which has been sprayed can be discharged.
  • the container which has been treated by the brush is then positioned ready for postspraying and a new container (not shown) is brought into alignment with the axis of the brush 12.
  • the base box measure of the can makers art is the weight in pounds of 112 sheets of plate, each sheet measuring 14 inches by 20 inches (35.6 by 50.8 cm), and hence is the weight in pounds of 31360 in 2 (2 0 .2 m2).
  • 1 lb (or 1 ) per base box equals 0.0224 kg/m 2 . Therefore, the said tinplate was 1.46 kg/m 2 and had 5.6 g/m 2 per side of tin.
  • the lubricant includes lanolin and the container was a 211 X 314 (diameter 2 and 11/16 inches and height 3 and 14/16 inches - 68.3 x 98.4 mm). These containers were brushed with a cylindrical synthetic bristle brush having a diameter slightly greater than the can diameter. They were then postcoated. The postcoating was a heat-reactive phenolic modified epoxide carried in a primarily aliphatic solvent system.

Landscapes

  • Application Of Or Painting With Fluid Materials (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
EP83306341A 1983-01-03 1983-10-19 Verfahren und Vorrichtung zum gleichmässigen Verteilen von Rückstandsschmiermittel in Behältern Withdrawn EP0113504A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US45528483A 1983-01-03 1983-01-03
US455284 1983-01-03

Publications (1)

Publication Number Publication Date
EP0113504A1 true EP0113504A1 (de) 1984-07-18

Family

ID=23808184

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83306341A Withdrawn EP0113504A1 (de) 1983-01-03 1983-10-19 Verfahren und Vorrichtung zum gleichmässigen Verteilen von Rückstandsschmiermittel in Behältern

Country Status (3)

Country Link
EP (1) EP0113504A1 (de)
AU (1) AU565541B2 (de)
CA (1) CA1215888A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5393909A (en) * 1988-11-22 1995-02-28 Board Of Regents, The University Of Texas System Diamine platinum complexes as antitumor agents
CN102950128A (zh) * 2012-11-05 2013-03-06 卧龙电气集团股份有限公司 一种自动除尘、涂油系统及其工作方法
CN109772637A (zh) * 2019-01-21 2019-05-21 中国科学院武汉岩土力学研究所 自动涂胶装置及涂胶系统

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2716054A1 (de) * 1977-04-09 1978-10-19 Wilhelm Helmes Vorrichtung zum befeuchten eines bandes mit schmierfluessigkeit vor dem loch-stanzen
DE2741276A1 (de) * 1977-09-14 1979-03-22 Schuler Gmbh L Vorrichtung zum auftragen eines fluessigen schmiermittels auf ein blech

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2716054A1 (de) * 1977-04-09 1978-10-19 Wilhelm Helmes Vorrichtung zum befeuchten eines bandes mit schmierfluessigkeit vor dem loch-stanzen
DE2741276A1 (de) * 1977-09-14 1979-03-22 Schuler Gmbh L Vorrichtung zum auftragen eines fluessigen schmiermittels auf ein blech

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5393909A (en) * 1988-11-22 1995-02-28 Board Of Regents, The University Of Texas System Diamine platinum complexes as antitumor agents
CN102950128A (zh) * 2012-11-05 2013-03-06 卧龙电气集团股份有限公司 一种自动除尘、涂油系统及其工作方法
CN109772637A (zh) * 2019-01-21 2019-05-21 中国科学院武汉岩土力学研究所 自动涂胶装置及涂胶系统

Also Published As

Publication number Publication date
AU2109883A (en) 1984-07-05
CA1215888A (en) 1986-12-30
AU565541B2 (en) 1987-09-17

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Effective date: 19850329

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Inventor name: KARAS, RICHARD J.

Inventor name: HLOBIL, THOMAS E.