EP0045199A1 - Appareil et procédé pour fermer des sachets refermables - Google Patents

Appareil et procédé pour fermer des sachets refermables Download PDF

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Publication number
EP0045199A1
EP0045199A1 EP81303414A EP81303414A EP0045199A1 EP 0045199 A1 EP0045199 A1 EP 0045199A1 EP 81303414 A EP81303414 A EP 81303414A EP 81303414 A EP81303414 A EP 81303414A EP 0045199 A1 EP0045199 A1 EP 0045199A1
Authority
EP
European Patent Office
Prior art keywords
bag
tin
tie
bags
glue
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.)
Ceased
Application number
EP81303414A
Other languages
German (de)
English (en)
Inventor
James H. Klemesrud
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.)
Doboy Packaging Machinery Inc
Original Assignee
Doboy Packaging Machinery Inc
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 Doboy Packaging Machinery Inc filed Critical Doboy Packaging Machinery Inc
Publication of EP0045199A1 publication Critical patent/EP0045199A1/fr
Ceased legal-status Critical Current

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Classifications

    • 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
    • B65B7/00—Closing containers or receptacles after filling
    • B65B7/02—Closing containers or receptacles deformed by, or taking-up shape, of, contents, e.g. bags, sacks
    • B65B7/06—Closing containers or receptacles deformed by, or taking-up shape, of, contents, e.g. bags, sacks by collapsing mouth portion, e.g. to form a single flap
    • B65B7/08—Closing containers or receptacles deformed by, or taking-up shape, of, contents, e.g. bags, sacks by collapsing mouth portion, e.g. to form a single flap and folding

Definitions

  • This invention relates to the closing of reclosable bags.
  • a bendable and flexible strip across a bag top to assist in holding filled bags closed, and especially for use in reclosing bags to preserve the contents thereof after initial opening.
  • Such strips are commonly designated as "tin” ties and normally comprise one or more lengths of bendable metal, such as aluminium or copper, contained within a sheath of plastic or paper material moulded or sealed over the metal.
  • the "tin” tie strip is affixed atop bag tops so as to provide bendable end segments freely extending beyond the bag side edges. These end segments may be bent around the bag top to hold the bag top folded closed both upon bag filling and by the user after the bag is opened.
  • This invention is directed to a machine and method for the fully automated, high-speed closing of bags with a"tin"tie strip applied to bags during the closing process in such a way as to accomplish a secure closure that can be reclosed by the "tin" tie strip after initial opening of the bags to preserve the contents thereof.
  • the basic objective is achieved by a machine in accordance with the invention which automatically carries out the sequential steps of applying glue to one side wall of the open top of a bag, applying a "tin” tie strip from a dispensing spool to the bag side wall over the glue and cutting off the "tin” tie strip with bendable links thereof projecting from the leading and trailing edges of the moving bag.
  • an automatically actuable scissors type of cut-off knife is positioned between a pair of continuously driven feed rollers which apply the"tin"tie strip to moving bags and a pair of transfer rollers located beyond the cut-off knife in the direction of bag travel.
  • the transfer rollers are positioned to grip the bag side walls and the"tid'tie strip together and thereby pull the "tin” tie along with a moving bag until the knife severs the "tin" tie strip behind the bag trailing edge.
  • the bending of the "tin” tie lengths' projecting from the leading and trailing edges of moving bags is preferably accomplished on a relatively high-speed, production line basis by a combination of movable and stationary contact devices.
  • the leading edge "tin” tie length is first bent around the bag top in two steps.
  • a member mounted for rotary movement across the path of bag travel first strikes the leading edge"tin"tie length and displaces it angularly with respect to the bag side walls.
  • stationary guide means positioned at a location to be struck by the angularly projecting leading edge "tin” tie length, flattens it rearwardly against the bag.
  • the trailing edge of the "tin” tie length is subsequently bent and flattened back against moving bags in two steps by a rotary member intermittently movable across the path of moving bags and by a moving belt positioned adjacent to the bag conveyor downstream of the rotary strike member.
  • the rotary member first displaces the trailing edge "tin” tie lengths to an angularly projecting position with respect to the bag side walls.
  • the moving belt is angled inwardly towards the bag conveyor with respect to the position of bag travel, and is driven in a direction generally coinciding with the direction of bag movement, but at a greater linear speed than that of the bag conveyor.
  • the moving belt is thus particularly effective to engage the angularly projecting trailing edge "tin” tie length, and progressively flatten it against the top of moving bags to complete a full 180° turn.
  • filled bags are intially introduced into the machine between a pair of guide housings 1 where the bag neck is gripped between a pair of flat, stainless steel carrier chains 8.
  • Chains 8 extend over substantially the entire length of the machine, and are closely spaced apart about supporting sprockets so as to firmly grip the opposite sides of the bag neck as illustrated in Figures 2 through 7.
  • Chains 8 are driven continuously and carry bags through the machine as the "tin" tie application and bag closing steps are performed in a predetermined sequence.
  • the gusseted, paper bags are trimmed at the top by a pair of rotary trimming discs 4. These disc blades act like scissors to shear each bag top off straight to the correct height for folding properly. Scrap material severed from the top of moving bags is discharged through chute 6.
  • a pneumatically actuated glue applicator 10 positioned as shown in Figures 1b and 2 is utilized to apply a first head of glue horizontally across the face of one side of each bag.
  • Glue is precisely metered through discharge nozzle 12 of glue applicator 10.
  • Closely spaced guide plates 14 having upstanding portions as shown support the opposite sides of the bag neck as glue is applied thereto.
  • carrier chains 8 are supported above a deck 16 apertured as shown to receive the neck 22 of moving bags 20.
  • the front side wall of each bag neck 22, as viewed from in front of the machine with respect to Figures 1a and 1b, is indicated by reference numeral 22a, and numeral 22b indicates the opposed, rear side wall.
  • Glue dispensing nozzle 12 is located so as to apply a narrow strip or bead of glue across bag side wall 22a near the top of the bag. This first bead of glue is placed on the bag side wall so as to coincide with the centreline of a "tin" tie strip subsequently applied thereover.
  • a cut off knife assembly 50 The cutting of the "tin” tie ribbon to leave a predetermined length of "tin” tie extending across the width of each bag neck is accomplished by a cut off knife assembly 50.
  • the knife assembly is actuated by a power cylinder 52 having a piston 54 coupled to a linkage mechanism 56. This linkage mechanism is in turn connected to pivotal knife blade 58.
  • a stationary knife blade 60 is positioned to co-operate with movable blade 58 to provide a scissors type of cut off action. Movable blade 58 pivots about point 62 through the reciprocal actuation of piston 54 and link 56.
  • Folder 66 is of a conventional, well known construction. Preferably, it comprises an inverted U-shaped folding plate as shown in Figure 5. Folding plate 5 inclines downwardly from right to left as viewed in Figure 1 to progressively fold the top of each moving bag over and impart a first fold thereto.
  • Figure 5 shows the top of a bag 20 folded downwardly over the face of side wall 22a to provide a first fold 68 with "tin" tie strip 39a lying between this first fold and bag side wall 22a.
  • a second pneumatically actuated glue applicator 72 having a dispensing nozzle 74 is positioned as shown in Figures 1a and 6 beyond compression rollers 70.
  • Guide plates 76 located adjacent to glue applicator 72 serve to support bag neck 22 as glue is applied thereto from nozzle 74.
  • Dispensing nozzle 74 is located to apply a second bead of glue to the outside surface of first fold 68 adjacent the top thereof as indicated at 75 in Figure 6.
  • a second folder 78 of identical construction as first folder 66 and shown in Figures 1a and 7 engages the top of moving bags 20 to fold the top thereof downwardly a second time.
  • the second fold 80 formed by folder 78 is shown in Figures 7 and 13.
  • the second folding operation brings first fold 68 into a position lying against bag side wall 22a with second glue bead 75 located therebetween.
  • second glue bead 75 serves to hold the bag top in the double folded condition shown in Figure 13.
  • the first glue bead holding "tin" tie strip 39a to first fold 68 is indicated by reference numeral 73 in Figure 13.
  • "Tin"tie strip 39a is contained as shown between bag top folds 68 and 80.
  • First rotor assembly 82 is located along the path of bag travel so that one of its rotary arms 94a or 94b will strike leading edge "tin” tie length 98 and bend it as illustrated in Figures 8, 9 and 10.
  • the action of rotary arm 94h as illustrated in Figures 9 and 10 is effective to bend leading edge "tin” tie length 98 to substantially a 90° angle with respect to the vertical plane of bag side walls 22a and 22b.
  • Trailing edge "tin” tie projection 100 remains straight as it passes between upright guide plates 102.
  • Rotary arm assembly 84 is located downstream of stationary guide 102 in the direction of bag travel so that its rotary arms 96a and 96b are in a position to strike trailing edge "tin” tie projection 100. As illustrated in Figures 8 and 11, this occurs after a bag neck 22 passes rotary arm assembly 84.
  • Rotary arm 96b is shown in Figures 8 and 11 striking trailing edge "tin” tie projection 100 and deflecting it to a substantially 90 0 angle with respect to the vertical plane of bag neck side walls 22a and 22b.
  • the final flattening of trailing edge "tin" tie projection 100 is accomplished by a rough belt 104 located downstream of rotary arm assembly 84.
  • Belt 104 is guided around shivs 106 and 108 so as to be supported at an angle with respect to guide chains 8 and the path of bag travel as shown in Figures 1a and 12.
  • Mounting plate 110 for belt shivs 106 and 108 is pivotally supported at one end on a pivot block 12 for swinging, pivotal movement in a horizontal plane about pivot pin connection 114.
  • the other end of mounting plate 110 is connected to the reciprocating piston 118 of a rigidly mounted power cylinder 116.
  • a coder assembly Generally indicated by reference numeral 121 at the output end of the machine in Figure 1a is a coder assembly. This assembly functions through the use of an ink wheel, type wheel and rubber backup roll to code the top, folded area of the bag.
  • the operational sequence as set forth above comprises the initial steps of trimming the bag top, applying a first glue bead 73 to one bag side wall by glue applicator 10, and then applying a"tin"tie strip 39a over glue bead 10.
  • a first top fold 68 is formed by folder 66
  • a second glue bead 75 is applied to the outside surface thereof as shown in Figure 6, and the bag top is folded down a second time at folder 78.
  • the double folded bag top with glue beads 73 and 75 is shown clearly in Figure 13. Applying glue bead 75 to the top, outside surface of the first fold 68 allows the convenient placement of nozzle 74 close to this bag surface.
  • Bendable"tin”tie lengths 98 and 100 extend beyond the leading and trailing edges of bag neck 22 approximately 5 ⁇ 8 to 7 ⁇ 8 of an inch. This is accomplished by the use of a control arrangement including cylinder 45 and an electric eye (not shown) positioned adjacent to the feed rollers 24 and 26.
  • air cylinder 45 When the eye senses an approaching bag, air cylinder 45 is activated to extend its piston 43 and shift knurled wheel shaft 38 inwardly towards shaft 32. Piston 43 is attached to bearing block 47 supporting shaft 38 as shown in Figure 3.
  • the closing of rollers 24 and 26 will start the feeding of "tin” tie ribbon 39 from spool 40 in front of the leading edge of the bag. As the bag passes the electric eye, cylinder 45 will retract to stop the feeding of "tin” tie ribbon.
  • cylinder 52 for cut-off knife 50 is actuated and a strip of "tin” tie 39a is cut off.
  • the control timing is such that movable knife blade 58 operates intermittently to sever the "tin” tie ribbon with bendable length 100 projecting rearwardly beyond the bag trailing edge.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Package Closures (AREA)
EP81303414A 1980-07-25 1981-07-24 Appareil et procédé pour fermer des sachets refermables Ceased EP0045199A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US17241180A 1980-07-25 1980-07-25
US172411 1980-07-25

Publications (1)

Publication Number Publication Date
EP0045199A1 true EP0045199A1 (fr) 1982-02-03

Family

ID=22627596

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81303414A Ceased EP0045199A1 (fr) 1980-07-25 1981-07-24 Appareil et procédé pour fermer des sachets refermables

Country Status (3)

Country Link
EP (1) EP0045199A1 (fr)
JP (1) JPS5755835A (fr)
CA (1) CA1173410A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113353356A (zh) * 2020-09-16 2021-09-07 沅陵县土家王食品有限责任公司 一种调味包装打码一体自动化设备

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60110498U (ja) * 1983-12-27 1985-07-26 小林　昌志 製紙用離解紙料の熟成装置
JPS60146092A (ja) * 1984-01-11 1985-08-01 小林　昌志 製紙用紙料の堆積装置
CN108891679A (zh) * 2018-07-04 2018-11-27 合肥欧语自动化有限公司 一种自封袋自动化封口装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2247110A (en) * 1939-01-23 1941-06-24 Gen Mills Inc Glue applicator
US3112679A (en) * 1960-01-27 1963-12-03 Fr Hesser Maschinenfabrik Ag F Device for applying binding strips to bags of rectangular cross section
CH380638A (de) * 1959-10-13 1964-07-31 Hesser Ag Maschf Beutelpackung mit Wickelverschluss
CH426607A (de) * 1965-07-05 1966-12-15 Sig Schweiz Industrieges Vorrichtung zum automatischen Befestigen eines Klemmstreifens an einem Beutel
US3861123A (en) * 1972-07-24 1975-01-21 Jr William H Eburn Bag closure apparatus

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7206173A (fr) * 1972-05-08 1973-11-12

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2247110A (en) * 1939-01-23 1941-06-24 Gen Mills Inc Glue applicator
CH380638A (de) * 1959-10-13 1964-07-31 Hesser Ag Maschf Beutelpackung mit Wickelverschluss
US3112679A (en) * 1960-01-27 1963-12-03 Fr Hesser Maschinenfabrik Ag F Device for applying binding strips to bags of rectangular cross section
CH426607A (de) * 1965-07-05 1966-12-15 Sig Schweiz Industrieges Vorrichtung zum automatischen Befestigen eines Klemmstreifens an einem Beutel
US3861123A (en) * 1972-07-24 1975-01-21 Jr William H Eburn Bag closure apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113353356A (zh) * 2020-09-16 2021-09-07 沅陵县土家王食品有限责任公司 一种调味包装打码一体自动化设备
CN113353356B (zh) * 2020-09-16 2022-06-28 沅陵县土家王食品有限责任公司 一种调味品包装袋包装打码一体自动化设备

Also Published As

Publication number Publication date
JPS5755835A (en) 1982-04-03
CA1173410A (fr) 1984-08-28

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Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): DE FR GB

17P Request for examination filed

Effective date: 19820723

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: DOBOY PACKAGING MACHINERY INC.

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 19841210

RIN1 Information on inventor provided before grant (corrected)

Inventor name: KLEMESRUD, JAMES H.