US2660318A - Apparatus for conveying magnetizable sheets - Google Patents

Apparatus for conveying magnetizable sheets Download PDF

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Publication number
US2660318A
US2660318A US148831A US14883150A US2660318A US 2660318 A US2660318 A US 2660318A US 148831 A US148831 A US 148831A US 14883150 A US14883150 A US 14883150A US 2660318 A US2660318 A US 2660318A
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United States
Prior art keywords
roll
sheets
conveyor
conveying
sheet
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Expired - Lifetime
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US148831A
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Coleman H Watson
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United States Steel Corp
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United States Steel Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
    • B65G47/52—Devices for transferring articles or materials between conveyors i.e. discharging or feeding devices
    • B65G47/68—Devices for transferring articles or materials between conveyors i.e. discharging or feeding devices adapted to receive articles arriving in one layer from one conveyor lane and to transfer them in individual layers to more than one conveyor lane or to one broader conveyor lane, or vice versa, e.g. combining the flows of articles conveyed by more than one conveyor
    • B65G47/71—Devices for transferring articles or materials between conveyors i.e. discharging or feeding devices adapted to receive articles arriving in one layer from one conveyor lane and to transfer them in individual layers to more than one conveyor lane or to one broader conveyor lane, or vice versa, e.g. combining the flows of articles conveyed by more than one conveyor the articles being discharged or distributed to several distinct separate conveyors or to a broader conveyor lane
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/002—Piling, unpiling, unscrambling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G57/00—Stacking of articles
    • B65G57/02—Stacking of articles by adding to the top of the stack
    • B65G57/11—Stacking of articles by adding to the top of the stack the articles being stacked by direct action of the feeding conveyor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
    • B65G2201/02—Articles

Definitions

  • This invention relates to apparatus for conveying magnetizable sheets and more particularly to the conveying of steel sheets.
  • it is necessary to inspect the sheets either visually by an inspector or, in the case of inspecting for pin holes, automatically by means of an electric eye.
  • the sheets are inspected as they pass along a conveyor and the defective sheets are later deflected from the 'conveyo r li administratto a reject pile or piles.
  • This deflection is ordinarily accomplished by means of a pivotally mounted flap gateythe operation of which iscontrolled by a synchronous timing d vise which is preset to open the flap gate just as the selected sheetarrives in front of it.
  • the flap gates which arernechanically operated up and down mustberelatively heavy and of special shape and;constructicn to facilitate passage of the reject tothe pilebelowthe belt and also be designed so that they will lie fiat to permit easy passage of the prime sheets thereover.
  • the flap gate because of its relatively heavy weight, has awkward mechanism and moving parts which wear and cause trouble. Its operation is slow so that it is unsuitable for high speed production.
  • Figure l is a schematic view of the conveying apparatus embodying my invention.
  • Figure 2 is an enlarged view of a portion of Figure 1;
  • Figure 3 is a fragmentary view similar to Figure 2 and showing a detail
  • Figure 4 is a view, similar to Figure 2, showing a second embodiment of my device.
  • Figure 5 is a view of another embodiment.
  • the reference numeral 2 indicates a belt conveyor over which a sheet S is passing.
  • a second conveyor 4 Spaced from the conveyor 2 is a second conveyor 4 which normally receives the sheet S from the conveyor 2.
  • a stationary deflector 6 is arranged between the conveyors 2 and 4.
  • a magnetizable roller 8 is arranged between the delivery end of conveyor 2 and the deflector 6.
  • the roll 8 is provided with a shaft 10 to which is rigidly attached an electromagnet [2.
  • the roll 8 is mounted for rotation about the shaft l0 and may be driven independently or from the conveyor roll M as shown in Figure 3. It will be i seen that the belt conveyor 2 together magentizable roll 8 form a conveying meeha nism for the sheets S. Extendingdownwardly at an angle fromthe roll 8 is a guide it which leads ally or automatically depending upon .the type.
  • control 25 When the sheet S passing over the conveyor is found to be defective the control 25 operates to magnetize the electromagnet l2 just as the sheet is approaching it. This causes the sheet to be diverted downwardly along the guide Hi to the pinch rolls [8 and hence to the reject piler 20. As soon as the sheet S passes from the roll 8, the control 26 demagnetizes the electromagnet l2. Hence any sheets being fed along conveyor 2 will continue along conveyors 4 and 22 to the prime piler 24. For high speed operation it is desired to rotate the roll 8 at a greater peripheral speed than the speed of conveyor 2 so that the sheet S will be moved out of the way of succeeding sheets.
  • FIG 4 shows a slightly different embodiment of my device.
  • a conveyor roll 28 is mounted for rotation about a shaft 30 and an electromagnet 32 is rigidly mounted on the shaft 30.
  • a stationary sheet diverter 34 is mounted between the conveyors 2 and 4.
  • a guide [6, pinch rolls l8, and reject piler 20 are arranged in the same manner as in Figure 1. The operation of this device is the same as that shown in Figures 1 to 3 with the roll 26 taking the place of roll 8.
  • Figure 5 shows another embodiment of my device in which a conveyor roll 36 is mounted for rotation about a shaft 38 and an electromagnet 40 is rigidly mounted on the shaft 38. It will be seen that the conveyor 2 together with the conveyor roll 36 form a conveying mechanism corresponding to the conveying mechanism of was; A tif The electromagnet .12 .is selectively Figures 1 to 3. The electromagnet 40 extends over a considerable are as compared to electromagnet 32. A guide 42 extends downwardly from the roll 36 to a conveyor 44 which delivers the sheets to a reject piler (not shown). The operation of this device is essentially the same as that shown in Figure 4.
  • Apparatus for conveying magneti'zable sheets comprising two conveyors spaced apart in tandem over which the sheets travel, a stationary deflector between the conveyors over which the sheets pass in traveling from one conveyor to the other, a rotatable magnetizable roll between the first conveyor and the stationary deflector, a guide adjacent said magnetizable roll extending downwardly therefrom, and means for magnetizing and deniagnetizing said roll, said means being operative to magnetize said roll to deflect a sheet from the path of travel between the conveyors downwardly between said roll and the underside of said deflector over said guide, said means being operative to demagnetize said roll after the diverted sheet passes therefrom.
  • Apparatus for conveying magnetizable sheets comprising two conveyors spaced apart in tandem over which the sheets travel, a stationary deflector between the conveyors over which the sheets pass in traveling from one conveyor to the other, a rotatable magnetizable roll on the side of said deflector away from the second of said conveyors, a reject iler below the second of said conveyors, a guide adjacent said magnetizable roll extending downwardly therefrom to said piler, and means for magnetizing and demagnetizing said roll, said means being operative to magnetize said roll to deflect a sheet from the path of travel between the conveyors downwardly between said roll and the underside of said deflector over said guide to said piler, said means being operative to demagnetize said roll after the diverted sheet passes therefrom.
  • Apparatus for conveying magnetizable sheets comprising a first conveying mechanism including a magnetizable roll at the exit end thereof, a second conveying mechanism spaced from the exit end of the first conveying mechanisrn, a stationary deflector between the conveying mechanisms over which the sheets pass in traveling from one conveying mechanism to the other, a guide adjacent the exit end of the first conveying mechanism extending downwardly therefrom, means for magnetizing and demagnetizing said roll, said means being operative to magnetize said roll to deflect a sheet from the path of travel between the conveying mechanisms downwardly between said roll and the underside of said deflector over said guide, said means being operative to demagnetize said roll after the diverted sheet passes therefrom.

Description

Nov. 24, 1953 c. H. WATSON 2,660,318 APPARATUS FOR CONVEYING MAGNETIZABLE SHEETS Filed March 10, 1950 2 Sheets-Sheet l F re. M 6:0 /8.\? 8 2 INVENTOR COLEMAN H WATSON ATTORNEY C. H. WATSON APPARATUS FOR CONVEYING MAGNETIZABLE SHEETS Filed March 10, 1950 Nov. 24, 1953 2 Sheets-Sheet 2 OONTRO FIG.5
- COLEMAN H.WATSON ATTORNEY Patented Nov. 24, 1953 Coleman H. wats o n. Birmingham, Ala., assignor to United States SteelCorporatiohla cor'pora- APPARATUS tion of New J ersey ApplieationMarchlO, 1950; seriai 148,831
3 claims. (Cl.:21 i+'1-1).
This invention relates to apparatus for conveying magnetizable sheets and more particularly to the conveying of steel sheets. In the manufacture of tin plate it is necessary to inspect the sheets either visually by an inspector or, in the case of inspecting for pin holes, automatically by means of an electric eye. In either case, the sheets are inspected as they pass along a conveyor and the defective sheets are later deflected from the 'conveyo r li neinto a reject pile or piles. This deflection is ordinarily accomplished by means of a pivotally mounted flap gateythe operation of which iscontrolled by a synchronous timing d vise which is preset to open the flap gate just as the selected sheetarrives in front of it. The flap gates which arernechanically operated up and down mustberelatively heavy and of special shape and;constructicn to facilitate passage of the reject tothe pilebelowthe belt and also be designed so that they will lie fiat to permit easy passage of the prime sheets thereover. The flap gate, because of its relatively heavy weight, has awkward mechanism and moving parts which wear and cause trouble. Its operation is slow so that it is unsuitable for high speed production.
It is therefore an object of my invention to provide a sheet diverter which is simple and has no moving parts to start and stop for each operation.
This and other objects will be more apparent after referring to the following specification and attached drawings in which:
Figure l is a schematic view of the conveying apparatus embodying my invention;
Figure 2 is an enlarged view of a portion of Figure 1;
Figure 3 is a fragmentary view similar to Figure 2 and showing a detail;
Figure 4 is a view, similar to Figure 2, showing a second embodiment of my device; and
Figure 5 is a view of another embodiment.
Referring more particularly to the drawings, the reference numeral 2 indicates a belt conveyor over which a sheet S is passing. Spaced from the conveyor 2 is a second conveyor 4 which normally receives the sheet S from the conveyor 2. A stationary deflector 6 is arranged between the conveyors 2 and 4. A magnetizable roller 8 is arranged between the delivery end of conveyor 2 and the deflector 6. As shown in Figure 2, the roll 8 is provided with a shaft 10 to which is rigidly attached an electromagnet [2. The roll 8 is mounted for rotation about the shaft l0 and may be driven independently or from the conveyor roll M as shown in Figure 3. It will be i seen that the belt conveyor 2 together magentizable roll 8 form a conveying meeha nism for the sheets S. Extendingdownwardly at an angle fromthe roll 8 is a guide it which leads ally or automatically depending upon .the type.
of inspection.-
;:;The operation of the device is as follows 1 s.
When the sheet S passing over the conveyor is found to be defective the control 25 operates to magnetize the electromagnet l2 just as the sheet is approaching it. This causes the sheet to be diverted downwardly along the guide Hi to the pinch rolls [8 and hence to the reject piler 20. As soon as the sheet S passes from the roll 8, the control 26 demagnetizes the electromagnet l2. Hence any sheets being fed along conveyor 2 will continue along conveyors 4 and 22 to the prime piler 24. For high speed operation it is desired to rotate the roll 8 at a greater peripheral speed than the speed of conveyor 2 so that the sheet S will be moved out of the way of succeeding sheets.
Figure 4 shows a slightly different embodiment of my device. In this modification a conveyor roll 28 is mounted for rotation about a shaft 30 and an electromagnet 32 is rigidly mounted on the shaft 30. It will be seen that the conveyor 2 together with the conveyor roll 28 form a conveying mechanism corresponding to the conveying mechanism of Figures 1 to 3. A stationary sheet diverter 34 is mounted between the conveyors 2 and 4. A guide [6, pinch rolls l8, and reject piler 20 are arranged in the same manner as in Figure 1. The operation of this device is the same as that shown in Figures 1 to 3 with the roll 26 taking the place of roll 8.
Figure 5 shows another embodiment of my device in which a conveyor roll 36 is mounted for rotation about a shaft 38 and an electromagnet 40 is rigidly mounted on the shaft 38. It will be seen that the conveyor 2 together with the conveyor roll 36 form a conveying mechanism corresponding to the conveying mechanism of was; A tif The electromagnet .12 .is selectively Figures 1 to 3. The electromagnet 40 extends over a considerable are as compared to electromagnet 32. A guide 42 extends downwardly from the roll 36 to a conveyor 44 which delivers the sheets to a reject piler (not shown). The operation of this device is essentially the same as that shown in Figure 4.
While several embodiments of my invention have been shown and described, it will be apparent that other adaptations and modifications may be made without departing from the scope of the following claims.
I claim:
1. Apparatus for conveying magneti'zable sheets comprising two conveyors spaced apart in tandem over which the sheets travel, a stationary deflector between the conveyors over which the sheets pass in traveling from one conveyor to the other, a rotatable magnetizable roll between the first conveyor and the stationary deflector, a guide adjacent said magnetizable roll extending downwardly therefrom, and means for magnetizing and deniagnetizing said roll, said means being operative to magnetize said roll to deflect a sheet from the path of travel between the conveyors downwardly between said roll and the underside of said deflector over said guide, said means being operative to demagnetize said roll after the diverted sheet passes therefrom.
2. Apparatus for conveying magnetizable sheets comprising two conveyors spaced apart in tandem over which the sheets travel, a stationary deflector between the conveyors over which the sheets pass in traveling from one conveyor to the other, a rotatable magnetizable roll on the side of said deflector away from the second of said conveyors, a reject iler below the second of said conveyors, a guide adjacent said magnetizable roll extending downwardly therefrom to said piler, and means for magnetizing and demagnetizing said roll, said means being operative to magnetize said roll to deflect a sheet from the path of travel between the conveyors downwardly between said roll and the underside of said deflector over said guide to said piler, said means being operative to demagnetize said roll after the diverted sheet passes therefrom.
3. Apparatus for conveying magnetizable sheets comprising a first conveying mechanism including a magnetizable roll at the exit end thereof, a second conveying mechanism spaced from the exit end of the first conveying mechanisrn, a stationary deflector between the conveying mechanisms over which the sheets pass in traveling from one conveying mechanism to the other, a guide adjacent the exit end of the first conveying mechanism extending downwardly therefrom, means for magnetizing and demagnetizing said roll, said means being operative to magnetize said roll to deflect a sheet from the path of travel between the conveying mechanisms downwardly between said roll and the underside of said deflector over said guide, said means being operative to demagnetize said roll after the diverted sheet passes therefrom.
COLEMAN H. WATSON,
References Cited .in the file of this patent UNITED STATES PATENTS Number Name Date 1,369,516 Bethke Feb. 22, 1921 2,008,200 Clause July 16, 1935' 2,176,784 Bowden Oct. 17, 1939 2,207,434 Haven July 9, 1940 2,278,518 Kenney et al Apr. '7, 1942 2,303,526 Cummings Dec. 1, 1942 2,328,859 Taylor Sept. 7, 1943
US148831A 1950-03-10 1950-03-10 Apparatus for conveying magnetizable sheets Expired - Lifetime US2660318A (en)

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2697513A (en) * 1952-06-09 1954-12-21 Gerber Prod Magnetic switching device
US2773595A (en) * 1951-11-20 1956-12-11 United Eng Foundry Co Classifying apparatus
DE1014484B (en) * 1954-09-02 1957-08-22 United States Steel Corp System for conveying magnetizable metal sheets
US2814398A (en) * 1954-02-05 1957-11-26 United States Steel Corp Apparatus for conveying magnetizable sheets
US2924093A (en) * 1953-10-12 1960-02-09 George L Hurst Testing and rejecting apparatus for vacuum packed cans
US2950640A (en) * 1951-11-28 1960-08-30 United States Steel Corp Mechanism and method for classifying and assorting metal sheets
US2999341A (en) * 1956-10-22 1961-09-12 Libbey Owens Ford Glass Co Cleaning glass supporting tables
DE1142446B (en) * 1954-09-27 1963-01-17 United States Steel Corp Device for the continuous sorting of metal sheets
US3104006A (en) * 1957-03-29 1963-09-17 Wean Engineering Co Inc Means and method for classifying and piling sheets
US3180190A (en) * 1961-02-15 1965-04-27 Cons Papers Inc Automatic sampler for sheet handling apparatus
US3263606A (en) * 1964-05-27 1966-08-02 William G Poynter Multicolor perfecting press having an offset blanket with electromagnetic support means
US20040048359A1 (en) * 2002-07-12 2004-03-11 Schmeling William R. Test strips moveable by magnetic fields
US20100052251A1 (en) * 2008-08-29 2010-03-04 Brother Kogyo Kabushiki Kaisha Sheet guiding apparatus

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1369516A (en) * 1917-11-05 1921-02-22 Magnetic Mfg Company Magnetic separator
US2008200A (en) * 1932-07-30 1935-07-16 Great Lakes Steel Corp Apparatus for handling sheet steel
US2176784A (en) * 1936-09-22 1939-10-17 James J Bowden Method of and apparatus for grading magnetic sheet material
US2207434A (en) * 1936-08-06 1940-07-09 Lamson Co Pneumatic dispatch system
US2278518A (en) * 1939-08-18 1942-04-07 Wheeling Steel Corp Apparatus for classifying sheets
US2303526A (en) * 1937-06-04 1942-12-01 Jones & Laughlin Steel Corp Magnetic sheet classifier
US2328859A (en) * 1939-01-21 1943-09-07 Aetna Standard Eng Co Classifier

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1369516A (en) * 1917-11-05 1921-02-22 Magnetic Mfg Company Magnetic separator
US2008200A (en) * 1932-07-30 1935-07-16 Great Lakes Steel Corp Apparatus for handling sheet steel
US2207434A (en) * 1936-08-06 1940-07-09 Lamson Co Pneumatic dispatch system
US2176784A (en) * 1936-09-22 1939-10-17 James J Bowden Method of and apparatus for grading magnetic sheet material
US2303526A (en) * 1937-06-04 1942-12-01 Jones & Laughlin Steel Corp Magnetic sheet classifier
US2328859A (en) * 1939-01-21 1943-09-07 Aetna Standard Eng Co Classifier
US2278518A (en) * 1939-08-18 1942-04-07 Wheeling Steel Corp Apparatus for classifying sheets

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2773595A (en) * 1951-11-20 1956-12-11 United Eng Foundry Co Classifying apparatus
US2950640A (en) * 1951-11-28 1960-08-30 United States Steel Corp Mechanism and method for classifying and assorting metal sheets
US2697513A (en) * 1952-06-09 1954-12-21 Gerber Prod Magnetic switching device
US2924093A (en) * 1953-10-12 1960-02-09 George L Hurst Testing and rejecting apparatus for vacuum packed cans
US2814398A (en) * 1954-02-05 1957-11-26 United States Steel Corp Apparatus for conveying magnetizable sheets
DE1014484B (en) * 1954-09-02 1957-08-22 United States Steel Corp System for conveying magnetizable metal sheets
DE1142446B (en) * 1954-09-27 1963-01-17 United States Steel Corp Device for the continuous sorting of metal sheets
US2999341A (en) * 1956-10-22 1961-09-12 Libbey Owens Ford Glass Co Cleaning glass supporting tables
US3104006A (en) * 1957-03-29 1963-09-17 Wean Engineering Co Inc Means and method for classifying and piling sheets
US3180190A (en) * 1961-02-15 1965-04-27 Cons Papers Inc Automatic sampler for sheet handling apparatus
US3263606A (en) * 1964-05-27 1966-08-02 William G Poynter Multicolor perfecting press having an offset blanket with electromagnetic support means
US20040048359A1 (en) * 2002-07-12 2004-03-11 Schmeling William R. Test strips moveable by magnetic fields
US20100052251A1 (en) * 2008-08-29 2010-03-04 Brother Kogyo Kabushiki Kaisha Sheet guiding apparatus
US8083226B2 (en) * 2008-08-29 2011-12-27 Brother Kogyo Kabushiki Kaisha Sheet guiding apparatus with an electric field or charge inverting portion

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