US3439472A - Wrapping machine - Google Patents

Wrapping machine Download PDF

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Publication number
US3439472A
US3439472A US549296A US3439472DA US3439472A US 3439472 A US3439472 A US 3439472A US 549296 A US549296 A US 549296A US 3439472D A US3439472D A US 3439472DA US 3439472 A US3439472 A US 3439472A
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US
United States
Prior art keywords
article
flaps
wedge
articles
folding
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
US549296A
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English (en)
Inventor
Gottfried M Hain
Wolfgang B Leonard
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.)
ALPMA Alpenland Maschinenbau GmbH
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3439472A publication Critical patent/US3439472A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65B49/00—Devices for folding or bending wrappers around contents
    • B65B49/02—Fixed or resiliently-mounted folders, e.g. non-driven rollers
    • 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
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/06—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths
    • B65B11/08—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths in a single straight path
    • B65B11/16—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths in a single straight path to fold the wrappers in channel form about contents and then to close the ends of the channel by folding and finally the mouth of the channel by folding or twisting
    • 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
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/06—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths
    • B65B11/28—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths in a curved path, e.g. on rotary tables or turrets
    • B65B11/36—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths in a curved path, e.g. on rotary tables or turrets to fold the wrappers in channel form about contents and then to close the ends of the channel by folding and finally the mouth of the channel by folding or twisting

Definitions

  • a machine for wrapping packages includes a wedge shaped element arranged to move between two positions in an arcuate path. In the first position, one side of the wedge holds one side of the wrapper while other mechanisms fold down the flap on three sides. The wedge is then shifted to the second position where the other side of the wedge forms a continuation of a flat plate in alignment with the bottom of the package so that the fourth flap will be folded over the previously folded flaps when the pack age is moved away in a path paralllel with the plate.
  • This invention relates to a device for closing the wrappers of articles, particularly block-shaped articles, by tucking in the rearwardly extending portions of the wrapper folded in the preceding folding channel, on the backside of the article.
  • the closing mechanism follows immediately the folding channel so that the articles to be wrapped are advanced one after the other by a plunger onto the closing position.
  • the rearwardly extending flaps are tucked in by means of sequentially actuated closing bars of the closing device.
  • said closure side is covered by the next article, which prevents in a most simple manner a springing back of the folds.
  • the superposition of the articles makes it difficult to subject the closed fold to an after-treatment such as sealing, cementing, or the like, because the closing side is not freely accessible.
  • a separate removal of the wrapped articles is often required.
  • a support plate which carries the articles in the end folding operations and is separate from the conveyer; after the end flaps have been tucked in, said support plate can be pivoted along a gliding plane onto the slot formed by two vertical conveyer belts.
  • Such a support plate which can be pivoted along a gliding surface allows delivering the completely wrapped articles without releasing the end fold and in exactly spaced relationship to a conveyer for further treatment.
  • the closing means for the end flap forms with a hold down face a rotatable wedge whose actuating surfaces are brought into operative position by raising or lowering and rotation.
  • Said double function of the wedge provides for a compact and simple construction of the end folding mechanism whereby the up-swinging of the wrapped articles from the end folding position shorten the wrapping path.
  • FIG. 1 is a perspective view of the end folding mechanism after the first step before being moved on;
  • FIG. 2 is the same view, after the second step.
  • FIG. 3 is a perspective view of the transfer device showing a wrapped article in the swing position.
  • the end folding device shown in FIGS. 1 and 2 comprises a support plate 1 for the articles 2 coming from the conventional folding channel lying behind the plane of the drawing (not shown). In this position, the articles are partially wrapped, the end flaps still rearwardly projecting.
  • the support plate 1 is carried by a swivel arm 3 which is swingable in a vertical plane. The swinging motion is carried out in accordance with the folding operation and the advance of the articles.
  • a stop plate 4 at the front end of the support plate 1 limits the advance motion of the articles and holds the same in the end folding and swing position.
  • the bottom tucker 7 is advanced first (FIG. 1) to tuck in the bottom flap.
  • both side tuckers 8 and 9 can engage the side flaps simultaneously.
  • the top face of the articles 2 is held by a hold down face 21 which, in the illustrated embodiment of the invention, is combined with an end folding tucker 22 to a rotary wedge 20.
  • Said rotary wedge is mounted resiliently upwardly so as to be adaptable to articles of different sizes.
  • the rotary wedge is raised and turned so far that the tucker 22 is located in the folding plane (FIG. 2).
  • the base 23 of the rotary wedge is connected to a push rod 24 reciprocating in a guide 25.
  • a lift arm 26 engages a lug 27 of said push rod 24 and thereby lifts the push rod and the rotary wedge base 23.
  • the to tary wedge is so mounted as to be able to perform a turning movement in a clockwise direction as viewed in FIGS. 1 and 2, this movement being guided by the engagement of the rollers 28 (FIG. 2) with the arcuate tracks 31 (FIG. 1) during the lifting movement.
  • the lift and turning motion of the rotary wedge is assisted by the two lateral draw springs 29.
  • Draw springs 30 acting on the push rod 24 ensure the return movement of the rotary wedge into the starting position, when the lift arm 26 moves again downwardly.
  • the support plate 1 conveys the wrapped article along the slide surface 33 in between the vertical rotating belts 40, 42. 41 and 43 are some of the verticle rollers driving said belts.
  • the slide surface 33 projects so far in the transport gap 44 as to ensure the gripping of the article 2 when it is swung upwardly.
  • the belt 40 consists of a heat resistant heat conductive material in order to transmit the heat and pressure required for sealing the wrapper from a heating element disposed inside the belt. The sealing then takes place during the transport movement.
  • the counterbelt 42 consists preferably of an elastic material such as foam rubber or the like.
  • the gap 44 is so arranged as to apply a slight pressure to the article during the transport. This not only improves the fold and seal but prevents also dropping or tilting of the articles.
  • an end flap folding mechanism for completing the wrapping of a partially wrapped article having four side flaps projecting outwardly from around the four side margins of the bottom side of the article said side flaps to be folded inwardly and downwardly upon said bottom side
  • supporting means for holding said partially wrapped article on one of said four sides, said supporting means being pivotally mounted for moving said article in an arcuate path in a plane parallel with the plane of said bottom side between a first and a second position, means for folding three of said side flaps inwardly upon said bottom side while the article is in said first position, a wedge-shaped element having first and second flap surfaces intersecting in a marginal edge,-means for mounting the wedge-shaped element for movement between a first position wherein said first surface is positioned against the side of the article opposite the side on which the article is supported in said first position of the supporting means, said mounting including means for swinging the wedge-shaped element in an arcuate path to a second position wherein said second surface is disposed substantially in the plane of the bottom side
  • said means for folding said first three flaps inwardly comprise a plurality of tuckers mounted for reciprocating movement in directions disposed in a plane parallel with said bottom side of an article 3.
  • said mounting for the wedge-shaped element includes arcuate track means, roller means on said wedge-shaped element for operative engagement with the track means, and reciprocating push rod means connected with the wedgeshaped element for moving said element between said first and second position.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Package Closures (AREA)
  • Basic Packing Technique (AREA)
US549296A 1965-05-25 1966-05-11 Wrapping machine Expired - Lifetime US3439472A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA49304A DE1253137B (de) 1965-05-25 1965-05-25 Vorrichtung zum Verschliessen von Einwickelhuellen von stueckigen Guetern

Publications (1)

Publication Number Publication Date
US3439472A true US3439472A (en) 1969-04-22

Family

ID=6936795

Family Applications (1)

Application Number Title Priority Date Filing Date
US549296A Expired - Lifetime US3439472A (en) 1965-05-25 1966-05-11 Wrapping machine

Country Status (3)

Country Link
US (1) US3439472A (de)
DE (1) DE1253137B (de)
GB (1) GB1096398A (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1182755A (en) * 1914-04-24 1916-05-09 Goodman & Sons Inc A Carton-sealing machine.
US1824378A (en) * 1928-09-27 1931-09-22 Package Machinery Co Wrapping machine
US1915499A (en) * 1931-01-10 1933-06-27 Package Machinery Co Method and apparatus for wrapping articles

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE538173C (de) * 1929-04-10 1931-11-11 Jagenberg Werke Ag Vorrichtung zum Verpacken von Schachteln, Paketen o. dgl. in Einschlagpapier
US2913864A (en) * 1950-05-20 1959-11-24 Redington Co F B Package stacking and sealing mechanism
US3008280A (en) * 1958-08-29 1961-11-14 Package Machinery Co Wrapping machines
DE1130351B (de) * 1959-12-16 1962-05-24 Hesser Ag Maschf Vorrichtung zum Verschweissen der Verschlussfaltungen thermoplastischer Verpackungen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1182755A (en) * 1914-04-24 1916-05-09 Goodman & Sons Inc A Carton-sealing machine.
US1824378A (en) * 1928-09-27 1931-09-22 Package Machinery Co Wrapping machine
US1915499A (en) * 1931-01-10 1933-06-27 Package Machinery Co Method and apparatus for wrapping articles

Also Published As

Publication number Publication date
GB1096398A (en) 1967-12-29
DE1253137B (de) 1967-10-26

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