US3759204A - Cutoff mechanism for container closure lining machines - Google Patents

Cutoff mechanism for container closure lining machines Download PDF

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Publication number
US3759204A
US3759204A US00088019A US3759204DA US3759204A US 3759204 A US3759204 A US 3759204A US 00088019 A US00088019 A US 00088019A US 3759204D A US3759204D A US 3759204DA US 3759204 A US3759204 A US 3759204A
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US
United States
Prior art keywords
knives
cams
machine
closure
cut
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
US00088019A
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English (en)
Inventor
W Harrison
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.)
WR Grace and Co Conn
Original Assignee
WR Grace and 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 WR Grace and Co filed Critical WR Grace and Co
Application granted granted Critical
Publication of US3759204A publication Critical patent/US3759204A/en
Assigned to W. R. GRACE & CO.-CONN. reassignment W. R. GRACE & CO.-CONN. MERGER (SEE DOCUMENT FOR DETAILS). Assignors: GRACE MERGER CORP. A CT CORP. (MERGED INTO), W. R. GRACE & CO. A CT. CORP.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65G59/00—De-stacking of articles
    • B65G59/06—De-stacking from the bottom of the stack
    • B65G59/061—De-stacking from the bottom of the stack articles being separated substantially along the axis of the stack
    • B65G59/062—De-stacking from the bottom of the stack articles being separated substantially along the axis of the stack by means of reciprocating or oscillating escapement-like mechanisms
    • 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
    • B65G59/00—De-stacking of articles
    • B65G59/06—De-stacking from the bottom of the stack
    • B65G59/067—De-stacking from the bottom of the stack articles being separated substantially perpendicularly to the axis of the stack

Definitions

  • One common type of can end lining machinery is the reciprocating slide machine.
  • a stack of unlined can ends is supported on a slide having knives which cut off the lowermost closure at each reciprocation, drop it through a gap in the slide to the machine's work surface, and push it ahead and onto a rotating chuck where the closure is supplied with a ring of liquid gasketing material. Then the can end is pushed ahead and tucked beneath a stack of lined ends at the delivery end of the machine.
  • belt take-offs are substituted for the delivery stack.
  • FIG. 1 is a perspective but diagrammatic representation of the improved cut-off mechanism. The lining machine itself is not shown.
  • FIG. 2 is a top view of the hopper portion of the machine showing the relation and position of the cut-off knives and cams. The lower half of the drawing shows the knife, cam, and slides in the cut-off position.
  • the cut-off knives, 11, are located on either side of the stack, 12, of the can ends.
  • the knives 11 having extended arms 30, are pivoted at pivots, 13-13 which are attached to the work surface 15 near hopper" 14 so called because the can ends feed downwardly through an opening of a size larger than a can end.
  • the word hopper has been used since, on commonly used machines, it is the name by which the part overlying and guiding the slide bars is known. It should be understood that this part does not necessarily have to be a hopper through which the closures are fed, but may be any bridge overlying the feed bars which will support and guide the pivoted knives.
  • the knives ll swing inwardly along the radius which is tangent to the center line of the can end stack 12 and cut off the can ends in timed relation to the reciprocating motion of the slide 16 since the knives are driven inwardly by the eccentric rotary cams, 18-18.
  • the knives 11 are forced to ride on the earns 18 by the compression springs 19-19.
  • the earns 18 are fastened to the shafts 21-21 which in turn are driven by the pulleys 22-22 by the drive pulley 23, all of which are looped by the cog belt 24.
  • Drive shaft 25 must, however, be arranged to rotate in such timed relation to the movement of the slide 16 that the cams will rotate and force the knives 11 into cut-off position in the appropriate position of slide 16.
  • this disaster is avoided by a device which stops the operation of the knives whenever the height of the infeed stack becomes so low that the can ends would leave the machine before a fresh supply can be placed on the infeed.
  • This is accomplished by interrupting the shaft 25 with an electric clutch 20 which is operated by a sensor 27 controlled by the height of the infeed stack.
  • the sensor can be merely a sensitive switch which interrupts the circuit feeding the electric clutch when the stack height drops to a critical level.
  • the interruption of the electric clutch cirucit may also be arranged to disable the circuit which operates the electropneumatic lining machine nozzle 17 (FIG. 2).
  • the sensor 27 which opens the circuit to the clutch 20 (and sometimes the circuit to the electropneumatic compound nozzle as well), is a photoelectric cell which when the light beam strikes the sensor 27, opens the cirucit to the clutch 20. Normally, the light beam focused on the sensor is blocked by the stack of ends but it will shine across a "low stack and open the electric clutch.
  • a reed switch 28 is attached either to the hopper or to the work surface of the machine in such a position that the feed bars will throw switch 28 when the bars are in position to accept the can end, and feed it to the chuck 29 without jamming. Closing the switch 28 causes the immediate engagement of the clutch 20. Consequently, the cams 18-18 rotate, the can end is dropped into the proper position and pushed forward onto the rotary chuck 29.
  • Clutch 20 is a commercial unit and includes a spring-actuated braking disc which stops the rotation of the upper portion (above the lnstead of a movement of approximately 5 inches, if 21 1 can ends are to be lined, the very small inward movement of the knives approximately one-tenth of an inch on each knife, advance the knives sufiieiently to free the can end, but the speed of inward motion is but one-twelfth or even less of what it otherwise would be were the knives attached to the feed bars.
  • a spring-actuated braking disc which stops the rotation of the upper portion (above the lnstead of a movement of approximately 5 inches, if 21 1 can ends are to be lined, the very small inward movement of the knives approximately one-tenth of an inch on each knife, advance the knives sufiieiently to free the can end, but the speed of inward motion is but one-twelfth or even less of what it otherwise would be were the knives attached to the feed bars.
  • cut-off knives directed inwardly attached to the free end of said arms and placed so that the center of said knives moves inwardly along a radius tangent to the center line of the said infeed stack
  • cams operating on a plane above the plane of the work surface of the machine, arranged to bear on the vertical margin of said arms,
  • clutch means to interrupt selectively the rotation of the cams without affecting the main machine driving means, and thereby stop the action of the knives response to a signal controlled by the height of the stack of closures in said machine
  • g. means to re-engage the said clutch and permit closure cutoff only when the said feed slide is in position to receive and transport the said can end.

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  • Making Paper Articles (AREA)
  • Branching, Merging, And Special Transfer Between Conveyors (AREA)
US00088019A 1970-11-09 1970-11-09 Cutoff mechanism for container closure lining machines Expired - Lifetime US3759204A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US8801970A 1970-11-09 1970-11-09

Publications (1)

Publication Number Publication Date
US3759204A true US3759204A (en) 1973-09-18

Family

ID=22208731

Family Applications (1)

Application Number Title Priority Date Filing Date
US00088019A Expired - Lifetime US3759204A (en) 1970-11-09 1970-11-09 Cutoff mechanism for container closure lining machines

Country Status (5)

Country Link
US (1) US3759204A (fr)
BE (1) BE775116A (fr)
CA (1) CA955471A (fr)
DE (1) DE2155395A1 (fr)
IT (1) IT941735B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2398002A1 (fr) * 1977-07-22 1979-02-16 Belcan Bdm Dispositif pour la selection et la distribution automatique de livres

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19703105A1 (de) * 1997-01-29 1998-07-30 Walter Schlutius Vorrichtung und Verfahren zum Separieren von Objekten

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1162156A (en) * 1914-04-16 1915-11-30 American Can Co Automatic can-end-feed mechanism.
US1789722A (en) * 1928-03-10 1931-01-20 M J B Co Feed slide for key-dipping machines
GB372944A (en) * 1931-05-08 1932-05-19 Charles Joseph Rhodes Improvements in and relating to machines for applying closures to metal cans
US2085767A (en) * 1933-03-02 1937-07-06 American Can Co Stopping device for can machinery and the like
US2525656A (en) * 1949-05-11 1950-10-10 Max Ams Machine Co Cover-feeding mechanism
US2746413A (en) * 1951-12-24 1956-05-22 Angelus Sanitary Can Machine C Can end feeder

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1162156A (en) * 1914-04-16 1915-11-30 American Can Co Automatic can-end-feed mechanism.
US1789722A (en) * 1928-03-10 1931-01-20 M J B Co Feed slide for key-dipping machines
GB372944A (en) * 1931-05-08 1932-05-19 Charles Joseph Rhodes Improvements in and relating to machines for applying closures to metal cans
US2085767A (en) * 1933-03-02 1937-07-06 American Can Co Stopping device for can machinery and the like
US2525656A (en) * 1949-05-11 1950-10-10 Max Ams Machine Co Cover-feeding mechanism
US2746413A (en) * 1951-12-24 1956-05-22 Angelus Sanitary Can Machine C Can end feeder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2398002A1 (fr) * 1977-07-22 1979-02-16 Belcan Bdm Dispositif pour la selection et la distribution automatique de livres

Also Published As

Publication number Publication date
DE2155395A1 (de) 1972-05-10
IT941735B (it) 1973-03-10
CA955471A (en) 1974-10-01
BE775116A (fr) 1972-03-01

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Legal Events

Date Code Title Description
AS Assignment

Owner name: W. R. GRACE & CO.-CONN., MASSACHUSETTS

Free format text: MERGER;ASSIGNORS:GRACE MERGER CORP. A CT CORP. (MERGED INTO);W. R. GRACE & CO. A CT. CORP.;REEL/FRAME:005206/0001

Effective date: 19880525