US3796020A - Device for closing a bag under vacuum - Google Patents
Device for closing a bag under vacuum Download PDFInfo
- Publication number
- US3796020A US3796020A US00265239A US3796020DA US3796020A US 3796020 A US3796020 A US 3796020A US 00265239 A US00265239 A US 00265239A US 3796020D A US3796020D A US 3796020DA US 3796020 A US3796020 A US 3796020A
- Authority
- US
- United States
- Prior art keywords
- bag
- nozzle
- collar
- carriage
- vacuum
- 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
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
- B65B31/04—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied
- B65B31/06—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied the nozzle being arranged for insertion into, and withdrawal from, the mouth of a filled container and operating in conjunction with means for sealing the container mouth
Definitions
- ABSTRACT A bag closing device including a nozzle which is ex- [73] Assignee: Armour and Company, Chicago, 111.
- PATENIEBnmzwm 3796020 sum 2 0r 3 l 27 ll H/GH PRESSURE AIR A/R PRESS. flR Q i 5 PM HOLDING VACUUM *H M. -V ⁇ A H+ A/R PRES Fig 2
- PATENTEBmrz m4 3796320 A ll? PRESSURE A/R PRESSURE ii CL /PPER Fig 4 DEVICE FOR CLOSING A BAG UNDER VACUUM BACKGROUND
- the apparatus for drawing a vacuum with a bag has included a nozzle about which the open mouth of the bag is pressed, the nozzle being then connected to a source of vacuum, and various types of mechanisms have been provided for clipping the bag, some of these being sold under the trade names D-Mar, Tipper Tie and others.
- vacuum nozzles have been provided over which the open end of the bags can be placed, a vacuum drawn, and the bags and nozzles moved to the clipping mechanism.
- Such devices have still required a great amount of manual attention and hand labor.
- FIG. I is a perspective view of the apparatus showing a bag being placed in position to be closed;
- FIG. 2 is a schematic diagram of the system for controlling the functioning of the apparatus with particular reference to the fluid operated mechanism
- FIG. 3 is a schematic diagram of the system for controlling the functioning of the machine with particular reference to the electrical controls.
- FIG. 4 is a schematic diagram of the fluid control circuit for the clipper mechanism.
- the improved device includes a vertical back frame structure and a forwardly extending frame arm 11 from which the nozzle 12 depends. At a lower level there is a platform 13 supported by leg members 14 which are made secure with the back frame structure 10. At the back of frame 10 is a box 15 which houses some of the valves and other equipment used in the operation of the device.
- the nozzle 12 which could be called the focal center of the device, has a cylindrical exterior wall 16 in which 2 is contained an inner pipe 17, the interior of pipe 17 providing an interior air passage. An outer air passage is provided between the exterior of pipe 17 and the wall 16.
- the inner air passage is connected through line 19 with a relatively strong vacuum source and the outer passage is connected through line 20 with a relatively light vacuum source which we may call the holding vacuum.
- the outer wall 16 is constructed at its lower end in a frustoconical configuration to form a skirt portion 21 which provides a seat for the collar of the clamping mechanism later to be described.
- the seat portion 21 has perforations 22 in its wall which perforations lead to the outer vacuum passageway within the nozzle. This passageway is closed at the bottom of the nozzle except for the perfo' rations 22.
- the bottom of the pipe 17 is open.
- Extending about the nozzle 12 is the collar 23 which is arranged to move vertically of the nozzle.
- the lower part 24 of the interior opening through collar 23 is formed in frustoconical shape to fit the seat 21 so that when the collar is moved downwardly the collar portion 24 engages the surface of the seat 21.
- a lever 25 has its rearward end pivotally connected at 26 with the frame and has its bifurcated forward end pivotally connected with the collar 23.
- a cylinder 27 has its one end pivotally connected to bracket 28 attached to frame arm 11, and has its piston 29 pivotally connected with a central portion of lever 25. Extension of piston 29 within cylinder 27 moves the collar 23 downwardly and retraction of the piston within the cylinder moves collar 23 upwardly.
- an apron 30 secured to the frame and carrying a shelf 31 which may be vertically adjusted'As shown in FIG. 1, the operator may place the filled bag to be closed on shelf 31 so that the nozzle 12 extends downwardly into the open top of the bag.
- the sealing mechanism E is carried on a carriage 42 which is slidably mounted on a platform 13. As shown in FIG. 1, a pair of spaced bars 40 have their ends secured in the mounting blocks 41 which in turn are secured to platform 13. Slidably carried on bars 40 is the carriage 42 on which is mounted the mechanism E for clipping the bags and, in the present embodiment, for cutting off the top of the bags above the clips.
- This mechanism is driven by an air cylinder 44 carried on the carriage 42.
- Flexible air lines 45 and 46 connect the cylinder 44 with a source of air pressure.
- the mechanism E will not be described in detail herein. Such mechanisms are known to the art. These mechanisms are available commercially. The particular unit illustrated in the drawing is one which is being offered for sale by the D-Mar Company, Incorporated, of Los Angeles, California. This mechanism is effective to bind with a metal clip the gathered neck of a vacuumized bag, which for practical purposes may be regarded as a sealing of the bag. In the present embodiment the mechanism E also serves to cut ofi the neck of the bag below the nozzle and above the seal, the cut off part of the mechanism being operable after the seal has been effected.
- An air cylinder 50 is mounted on the platform 13 and the piston of this cylinder is attached to carriage 42 so that when the piston is extended this moves the carriage 42 and the mechanism E carried thereon forwardly to the position where the top portion of the bag enters the mouth 47 of the mechanism E for clipping and cutting the bag top. While the top portion or neck of the bag is contained in mouth 47, and upon operation of cylinder 44, the arm 48 of this mechanism is driven about its pivot and against the neck of the bag where it clips the bag, and then proceeds to cut the neck of the bag just above the point at which it has been clipped. Upon completion of the clipping and cutting function, the arm 48 moves back to its original position to await the next actuation.
- a magazine 49 is provided in which clips are stacked and from which a steel clip is supplied each time the clipper is operated.
- Air valve C is located in the manifold provided by arm 1 1 and is operated by the manual switch C-l (FIG. 1).
- the operator places a bag 60 filled with a ham 61 or other such product, on the shelf 31, so that the nozzle 12 extends into the top opening of the bag, and may fold the top of the bag about nozzle 12. Then he strikes I the switch C-l thereby activating valve C which opens the operating valve B (located in the control box 15).
- Activation of valve B performs the following functions:
- valve N Physical located in box 15
- the holding vacuum serves to draw air from the space between the film of bag 60 and the skirt 21 through the outer air passageway in nozzle 12 and the line 20 to the vacuum source.
- the holding vacuum is a relatively light vacuum, which may be of the order of from 10 to 28 inches of mercury, but is sufficient to draw the film of the bag against the skirt 21 and hold it there.
- the collar 23 may descend of its own weight along nozzle 12, or if the operator should like it to descend more rapidly (the fluid has to move from one end of the cylinder and into the other end of the cylinder), the operator may push this collar down by hand until its part 24 comes against the film about skirt 21 and presses the film against the skirt member.
- valve D When the collar 23 moves down against skirt 21 the lever 25 moves downwardly about its pivot 26 and trips the toggle switch of valve D. Actuation of valve D performs the following functions:
- Shifts valve A to connect air from the main pressure line 19 against the piston of cylinder 27 to extend the piston and thus press lever 25 and collar 23 downwardly to lock the collar against skirt 21 with the film of the bag top therebetween.
- Pressure from this high pressure line is relatively high, of the order of from to pounds per square inch gauge. Application of this pressure seals the bag top to the nozzle and locks it in place on the nozzle.
- Shifts valve F (physically located on the front side of the frame arm 11) to connect the space on the interior of the bag through pipe 17 with the main vacuum thus to evacuate the air from bag 60 and draw the film tightly to the product.
- the main vacuum is a relatively strong vacuum which may be of the order of from 10 to 28 inches of mercury. With the evacuation of air within the bag the portion of the bag between the product and the nozzle comes together in what may be called a neck portion.
- FIG. 3 shows an electrical circuit to which an electrical potential is applied between terminals 65 and 66.
- a switch VS-l located in box 15
- this circuit is a switch VS-l (located in box 15) of a type which is sensitive to air pressure, which is normally open and blocking the flow of current, but which is designed automatically to close when the vacuum in the high vacuum line, and consequently in bag 60, reaches a predetermined value, such as, for example, from 10 to 28 inches of mercury.
- a switch VS-l When said switch VS-l operates, this starts the timing cycle on the timer TR-l and operates the control relay CR-l (located in box 15) which in turn connects into the electrical circuit the solenoid 67 of the air valve G. Operation of solenoid 67 actuates the air valve G which applies air pressure behind the piston of cylinder 50 which starts carriage 42 to move forwardly, carrying mechanism E thereon.
- cycle c Shifts valve J to put air pressure on the holding vacuum line to blow air through the outer air passage in nozzle 12 and through perforations 22 in the wall of skirt 21 to blow off from the nozzle the extreme top of the bag which was cut off from the remainder of the bag by mechanism E.
- a bag closing device comprising a stationary nozzle, means for holding the open end of the bag about said nozzle, a carriage, sealing mechanism mounted on said carriage, means for drawing air from said bag and through said nozzle to vacuumize said bag, and means sensitive to a predetermined degree of vacuum so produced for advancing said carriage into position for sealing said bag below said nozzle.
- a nozzle extendable into the open end of a bag to be closed, and clamping means for clamping the top of said bag about said nozzle, said clamping means including a seat on said nozzle and a collar movable on said nozzle against said seat with the top of said bag therebetween, saidclamping means including also a fluid cylinder and being operable to press said collar against said seat when fluid pressure is applied to said cylinder, said device including means for applying fluid pressure to said cylinder when said collar is moved into position against said seat.
- a device for closing bags comprising a nozzle extendable into the open end of a bag to be closed, a vacuum source, means for connecting said source with a space between the top portion of said bag and the exterior of said nozzle to thereby hold said top portion against said nozzle, clamping mechanism for clamping said bag top tightly against said nozzle, said mechanism including a collar movable along said nozzle and initially in raised position, means for lowering said collar into position for pressing said top against said nozzle, actuating means operable when said collar is moved to said pressing position for actuating said mechanism to clamp said top against said nozzle, means operable when said collar has moved to pressing position for withdrawing air from the interior of said bag through said nozzle to vacuumize said bag, a carriage, bag sealing mechanism carried by said carriage, means for advancing said carriage to bring said sealing mechanism into position for sealing said bag, means sensitive to the strength of the vacuum within said bag for actuating said carriage advancing means when said vacuum has reached a predetermined strength, means for actuating said sealing mechanism when said carriage has reached said sealing position
- a nozzle extendable into the open end of a bag to be closed, clamping means for clamping the top of said bag about said nozzle, said clamping means including a seat on said nozzle and a collar movable on said nozzle against said seat with the top. of said bag therebetween, means for withdrawing air from within said bag through said nozzle to bring the interior of said bag under vacuum, a frame, a lever pivotally secured at one end to said frame and being connected with said collar at its other end, and a fluid cylinder having its piston connected with said lever whereby application of fluid pressure to said cylinder operates to press said collar against said seat on said nozzle with the top of said bag therebetween.
- a nozzle extendable into the open end of a bag to be closed, said nozzle including an inner pipe providing an interior passage communicating at its lower end with the interior of said container and including also an outer wall, a closure joining the bottom end of said outer wall to said pipe, said pipe, said outer wall and said closure forming an outer passage which is closed at its bottom end, said outer wall having perforations therein, the upper portions of the open end of said bag to be sealed extending adjacent the outer surface of said outer wall and over said perforations, said perforations providing communication between said outer passage and a space between said outer wall and said upper portions of the bag, means for withdrawing air from said passageway whereby said upper portions are held tightly to said outer surface and means for withdrawing air from said pipe whereby to evacuate the interior of said bag.
- a bag closing device as set forth in claim 7 in which said last-mentioned withdrawal means is substantially stronger and operable to create a higher vacuum than is said first-mentioned withdrawal means.
- a bag closing device as set forth in claim 7 including clamping means for clamping said upper portions of the bag to said outer wall, said clamping means including a collar, a seat on said outer wall, said collar being adaptedto engage said seat with said upper portions of the bag therebetween.
- a bag closing device as set forth in claim 9 wherein a lower portion of said outer wall is outwardly flared to provide said seat and wherein said perforations are contained in said outwardly flared portion of said outer wall.
- a bag closing device as set forth in claim 1 including means for retracting said carriage after said bag has been sealed,and a time delay device actuated by said advancing means and operable after a predeter- 14.
- a device as set forth in claim 11 including means for cutting the top portion of the bag above the point where it is sealed while said carriage is in advanced position, and switch means sensative to the retraction of said carriage to a predetermined position for blowing the cutoff portion of the bag from the device.
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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vacuum Packaging (AREA)
Abstract
Description
Claims (15)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US26523972A | 1972-06-22 | 1972-06-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3796020A true US3796020A (en) | 1974-03-12 |
Family
ID=23009609
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00265239A Expired - Lifetime US3796020A (en) | 1972-06-22 | 1972-06-22 | Device for closing a bag under vacuum |
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US (1) | US3796020A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4308710A (en) * | 1979-06-06 | 1982-01-05 | E. I. Du Pont De Nemours And Company | Process and apparatus for packaging |
EP0046592A2 (en) * | 1980-08-26 | 1982-03-03 | Osaka Kagaku Gokin Kabushiki Kaisha | Machine adapted to deaerate food-inserted bags |
EP0836997A1 (en) | 1996-09-17 | 1998-04-22 | Kraft Foods, Inc. | Apparatus and method for formation of sealed packages |
US20040231294A1 (en) * | 2001-04-17 | 2004-11-25 | Shannon Daniel P. | Vacuum sealable bag apparatus and method |
US6991109B1 (en) | 2001-04-17 | 2006-01-31 | Foodfresh Technologies Llc | Vacuum sealable bag apparatus and method |
US20120055117A1 (en) * | 2010-09-07 | 2012-03-08 | Craig Felgenhauer | Vacuum Device For Perishable Food Items |
CN105083635A (en) * | 2015-09-12 | 2015-11-25 | 华联机械集团有限公司 | Full-automatic unmanned vacuum air-conditioning sealing packing machine with dust extraction function |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2863267A (en) * | 1956-08-14 | 1958-12-09 | Moore George Arlington | Air extractor and sealing device |
US3094825A (en) * | 1961-09-18 | 1963-06-25 | Grace W R & Co | Food packaging machine |
US3193982A (en) * | 1961-04-12 | 1965-07-13 | Dura Lee Corp | Apparatus for evacuating and sealing bags |
US3401499A (en) * | 1964-07-27 | 1968-09-17 | Hydrahone Equipment Division O | Bag packaging device |
US3700387A (en) * | 1971-04-26 | 1972-10-24 | Kartridg Pak Co | Vacuum bagging machine |
-
1972
- 1972-06-22 US US00265239A patent/US3796020A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2863267A (en) * | 1956-08-14 | 1958-12-09 | Moore George Arlington | Air extractor and sealing device |
US3193982A (en) * | 1961-04-12 | 1965-07-13 | Dura Lee Corp | Apparatus for evacuating and sealing bags |
US3094825A (en) * | 1961-09-18 | 1963-06-25 | Grace W R & Co | Food packaging machine |
US3401499A (en) * | 1964-07-27 | 1968-09-17 | Hydrahone Equipment Division O | Bag packaging device |
US3700387A (en) * | 1971-04-26 | 1972-10-24 | Kartridg Pak Co | Vacuum bagging machine |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4308710A (en) * | 1979-06-06 | 1982-01-05 | E. I. Du Pont De Nemours And Company | Process and apparatus for packaging |
EP0046592A2 (en) * | 1980-08-26 | 1982-03-03 | Osaka Kagaku Gokin Kabushiki Kaisha | Machine adapted to deaerate food-inserted bags |
EP0046592A3 (en) * | 1980-08-26 | 1982-03-17 | Osaka Kagaku Gokin Kabushiki Kaisha | Deaerator for food-inserted one-end-bond tubes |
EP0836997A1 (en) | 1996-09-17 | 1998-04-22 | Kraft Foods, Inc. | Apparatus and method for formation of sealed packages |
EP1057729A1 (en) | 1996-09-17 | 2000-12-06 | Molins Plc | Apparatus and method for formation of sealed packages |
US20040231294A1 (en) * | 2001-04-17 | 2004-11-25 | Shannon Daniel P. | Vacuum sealable bag apparatus and method |
US6991109B1 (en) | 2001-04-17 | 2006-01-31 | Foodfresh Technologies Llc | Vacuum sealable bag apparatus and method |
US7270238B2 (en) | 2001-04-17 | 2007-09-18 | Foodfresh Technologies, Llc | Vacuum sealable bag apparatus and method |
US20120055117A1 (en) * | 2010-09-07 | 2012-03-08 | Craig Felgenhauer | Vacuum Device For Perishable Food Items |
US8511046B2 (en) * | 2010-09-07 | 2013-08-20 | Craig Felgenhauer | Vacuum device for perishable food items |
CN105083635A (en) * | 2015-09-12 | 2015-11-25 | 华联机械集团有限公司 | Full-automatic unmanned vacuum air-conditioning sealing packing machine with dust extraction function |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: ARMOUR FOOD COMPANY,ARIZONA Free format text: SAID ASSIGNOR HEREBY ASSIGNS NUN PRO TUNC AS OF JANUARY 3, 1983,THE ENTIRE INTEREST IN SAID PATENT RIGHTS TO SAID ASSIGNEE;ASSIGNOR:ARMOUR AND COMPANY AN AZ CORP.;REEL/FRAME:004266/0048 Effective date: 19831129 Owner name: G. ARMOUR ARIZONA COMPANY,ARIZONA Free format text: ASSIGNOR HEREBY ASSIGN NUNC PRO TUNC AS OF OCTOBER 1, 1982, THE ENTIRE INTEREST IN SAID PATENT RIGHTS TO SAID ASSIGNEE;ASSIGNOR:GREYHOUND CORPORATON THE;REEL/FRAME:004266/0024 Effective date: 19831129 Owner name: ARMOUR FOOD COMPANY GREYHOUND TOWER, PHOENIX, AZ Free format text: SAID ASSIGNOR HEREBY ASSIGNS NUN PRO TUNC AS OF JANUARY 3, 1983,THE ENTIRE INTEREST IN SAID PATENT RIGHTS TO SAID ASSIGNEE.;ASSIGNOR:ARMOUR AND COMPANY AN AZ CORP.;REEL/FRAME:004266/0048 Effective date: 19831129 Owner name: G. ARMOUR ARIZONA COMPANY GREYHOUND TOWER, PHOENIX Free format text: ASSIGNOR HEREBY ASSIGN NUNC PRO TUNC AS OF OCTOBER 1, 1982, THE ENTIRE INTEREST IN SAID PATENT RIGHTS TO SAID ASSIGNEE;ASSIGNOR:GREYHOUND CORPORATON THE;REEL/FRAME:004266/0024 Effective date: 19831129 Owner name: ARMOUR AND COMPANY Free format text: CHANGE OF NAME;ASSIGNOR:G. ARMOUR ARIZONA COMPANY;REEL/FRAME:004266/0035 Effective date: 19820929 Owner name: GREYHOUND CORPORATION THE Free format text: MERGER;ASSIGNOR:ARMOUR AND COMPANY;REEL/FRAME:004266/0001 Effective date: 19820915 |
|
AS | Assignment |
Owner name: ARMOUR FOOD COMPANY Free format text: CHANGE OF NAME;ASSIGNOR:CAG SUBSIDIARY, INC.;REEL/FRAME:004400/0640 Effective date: 19831213 |
|
AS | Assignment |
Owner name: CAG SUBSIDIARY, INC., CONAGRA CENTER, ONE PARK CEN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ARMOUR FOOD COMPANY;REEL/FRAME:004402/0166 Effective date: 19831218 |
|
AS | Assignment |
Owner name: CONAGRA, INC. Free format text: MERGER;ASSIGNOR:ARMOUR FOODS COMPANY;REEL/FRAME:004490/0929 Effective date: 19850523 |