US3376691A - Packaging machines - Google Patents

Packaging machines Download PDF

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Publication number
US3376691A
US3376691A US505710A US50571065A US3376691A US 3376691 A US3376691 A US 3376691A US 505710 A US505710 A US 505710A US 50571065 A US50571065 A US 50571065A US 3376691 A US3376691 A US 3376691A
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US
United States
Prior art keywords
blank
grippers
feed
folding
station
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
US505710A
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English (en)
Inventor
Adolph S Dorosz
Armand L Tardiff
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.)
United Shoe Machinery Corp
Original Assignee
United Shoe Machinery Corp
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 United Shoe Machinery Corp filed Critical United Shoe Machinery Corp
Priority to US505710A priority Critical patent/US3376691A/en
Priority to SE13820/66A priority patent/SE335049B/xx
Priority to GB48163/66A priority patent/GB1170093A/en
Application granted granted Critical
Publication of US3376691A publication Critical patent/US3376691A/en
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
    • 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
    • B65B11/50—Enclosing articles, or quantities of material, by disposing contents between two sheets, e.g. pocketed sheets, and securing their opposed free margins
    • B65B11/52—Enclosing articles, or quantities of material, by disposing contents between two sheets, e.g. pocketed sheets, and securing their opposed free margins one sheet being rendered plastic, e.g. by heating, and forced by fluid pressure, e.g. vacuum, into engagement with the other sheet and contents, e.g. skin-, blister-, or bubble- packaging
    • 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
    • B65B11/48—Enclosing articles, or quantities of material, by folding a wrapper, e.g. a pocketed wrapper, and securing its opposed free margins to enclose contents

Definitions

  • This invention relates to packaging machines and more particularly is directed to apparatus for folding blanks during the formation of display packages.
  • U.S. Patent No. 3,195,284 there is shown in U.S. Patent No. 3,195,284, one form of machine for making display packages.
  • the package produced therein and which also may be contemplated by the present invention is formed from a flat blank comprising a supporting frame of relatively rigid material having a window opening covered by a sheet of heat formable transparent plastic material.
  • the plastic window is shaped to receive an article, the blank being folded after the article is placed.
  • Such packages have found wide acceptance and in order to extend their use, it is essential that machinery used in their production be capable of high speed and increased output over machines presently in use.
  • One problem encountered is increased speed as well as simultaneous multiple production of the package involves the precise control of the package blanks while being folded. Accordingly, it is an object of the present invention to overcome the problems encountered with increased speed and precise control of the folding operation.
  • the machine is provided with a folding station on the feed path of the package blanks. At this station folding arms are provided which are initially adjacent but out of the feed path of the blanks. The blanks are intermittenly fed and located so the leading ends are engageable by the arms.
  • the arms are swung through the feed path so as to fold the blank at a predetermined fold line while the blank is held fixed by suction cups. While the blank is held folded by the arms, a pair of feed grippers close on the folded blank to maintain the fold. Thereafter, the arms and the suction cups are retracted and the grippers advance the folded blank to a fixing station where the folded blank is secured together.
  • a pair of fixed grippers between the folded and fixing stations hold the folded card in the interval while the feed grippers release the blank and the fixing station secures the folded blank together.
  • FIG. 1 is a side elevation of a typical packaging machine in which the invention may be embodied
  • FIG. 2 is a perspective view showing a portion of the machine particularly at the blank folding station
  • FIG. 3 is a plan view with parts broken away showing the feed drive mechanism
  • FIG. 4 is a section on line IVIV of FIG. 3;
  • FIG. 5 is a side elevation with parts broken away of FIG. 4;
  • FIG. 6 is a section substantially similar to that shown in FIG. 4 but illustrating the drive mechanism for the fixed gripper
  • FIG. 7 is a view partly in section of control mechanism adjacent the mechanism of FIG. 6;
  • FIG. 8 is a section substantially on line VIIIVIII of FIG. 3;
  • FIG. 9 is a side elevation with parts broken away to illustrate the blank folding mechanism
  • FIG. 10 is a view similar to FIG. 9 and illustrating the positions of the various parts during blank folding.
  • FIG. 11 is a plan view of the mechanism shown in FIG. 10.
  • FIG. 1 A typical machine in which may be embodied the folding apparatus of the present invention is shown in FIG. 1.
  • the machine at one end is provided with a blank feeding mechanism A adapted to deposit blanks individually on guideways 2 (FIG. 2) and rails 4 which extend through the machine to guide each blank along a predetermined path.
  • the path extends through a film heating station B, a pocket forming station C, product loading stations D, a folding station E, a sealing or fixing station F and a film shrinking station G.
  • the only station that will be described in detail as pertinent to the present invention is the folding station E. It should be understood that the entire machine shown is merely a typical example of one machine in which the present invention may be used.
  • Each feed gripper 6 comprises a movable jaw 8 and an anvil jaw 10.
  • the anvil jaws 10 are elongated and connected together throughout the length of the machine to form the guideways 2.
  • the jaws 10 are carried by brackets 12 secured to two long feed bars 14 which extend along the length of and at opposite sides of the machine.
  • the feed bars are guided for reciprocating movement in guides 16 mounted on portions of the machine frame 18.
  • Each movable jaw 8 is pivoted on a pin 20 in each bracket 12 and is provided with an arm 22 connected to the piston rod 24 of a fluid operated cylinder 26 carried on pivots 28 in the bracket. Introduction of pressure fluid to the cylinder acts to close the jaw 8 to clamp 21 blank 30 against the jaw 10.
  • the bars 14 are reciprocated in unison by means of the mechanism shown in FIGS. 3 and 8.
  • Each bar is provided with a depending lug 32 (FIG. 8), the lower end of which is received in a slot 34 (FIG. 3) in a bracket 36.
  • the bracket is provided with bearings 38 adapted to slide on a rod 40 fixed at opposite ends in cross bars 42 of the machine frame. At one end the bracket is guided in a groove 44 in a bar 46 also secured to the machine frame.
  • a slot 48 in the bracket receives a pin 50 upstanding from a lever 52.
  • the lever is pivoted at 54 and is provided with a sprocket 56 carrying a chain 58 which runs over idler sprockets 60 and is secured at opposite ends to members 62, 62 connected by a plate 64.
  • the plate 64 has headed pins 66 running in slots 6-7 in support members 68 secured to the machine frame.
  • the members 62 are connected to the opposite ends of piston rods 70, 7-1 extending from a fluid operated drive cylinder 72, and a speed control cylinder 73, respectively, the cylinders being secured to the unde-rsides of the members 68.
  • the various parts are in their initial positions prior to initiaton of a blank feed cycle.
  • an adjustable screw 77 actuates a switch 78 to sign-a1 to the various stations that the feeding of blanks has terminated and operations to be performed on the blanks also can be commenced.
  • a signal also is given to cause a plurality of pairs of fixed grippers 80 (which are open during the feed movement as seen in FIG. 4) to clamp the opposite edges of the blanks 30 against members 82 secured to the frame 18 (see also FIG. 2).
  • the grippers 80 are mounted for limited rotation on two shafts 84 extending along opposite sides of the machine as seen in FIG. 8. The rotation of the grippers on shaft 84 is limited by keys 86 fixed in the shafts and extending into arcuate slots 88 in the grippers.
  • a torsion spring 90 on the shaft has one end fixed in the gripper 80 and the other end fixed in a collar 91 secured by a set screw on the shaft.
  • a sleeve 92 provides a cover for the spring and together with a collar 93 fixed on the shaft locates the gripper 80 endwise on the shaft.
  • the shaft 84 also has fixed thereto an arm 94 (FIG. 6) connected to the end of a piston rod 95 extending from a double acting fluid operated cylinder 96 pivoted at its lower end to a part of the machine frame. Operation of the cylinder in one direction on signal from switch 78 causes clockwise rotation of the shaft 84.
  • the grippers 80 are also swung clockwise to clamp the blanks against movement while the feed grippers 6 are opened and returned and the various stations perform their operation on the blank.
  • the rotation of shaft 84 closing grippers 80 causes a lobe 81 (FIG. 7) on cam 83 fixed on the shaft to actuate a switch 85 to signal that the feed grippers may be opened. ahus, it may be seen that the feed movements of the blanks and their location at the various stations are precisely controlled at all times by the feed grippers and the fixed grippers without opportunity for the blanks to be misplaced.
  • each blank 30 is fed by the feed grippers 6 intermittently through stations B to D with fixed grippers 80 precisely locating each blank While being operated upon.
  • the blanks are fed from station D and into the folding station E where the blank is to be folded to enclose an article in the film pocket of the blank.
  • no fixed grippers are provided to hold the blank since they would interfere with the folding operation.
  • suction cups 100 (FIGS. 9-11) are provided to grip the underside of the blank adjacent its fold line.
  • Each cup is mounted on the upper end of a piston rod 102 extending from a cylinder 104 secured to the underside of rails 4. While the blank is being fed into station E the suction cups 100 are held retracted by cylinder 104 below the path of movement of the blank as seen in FIG. 9. When the blank 30 has been positioned by the feed grippers at the end of their feed stroke, pressure fluid is introduced to cylinder 104 to raise cup 100 into engagement with the underside of the blank as seen in FIG. 10. At this time a source of vacuum (not shown) is applied to the cup through a passage 106 in the piston rod 102 so the blank is firmly gripped by the cup adjacent the fold line of the blank.
  • the feed grippers may be opened to release the blank and to avoid interference with the folding operation.
  • the ends of fingers 108 arranged above the blank terminate at the fold line.
  • the fingers are carried by brackets 110 adjustably secured to bars 112 fixed to a rod 114 also fixed in members 116 upstanding from the machine frame.
  • the bars 112 also carry one end of flexible strips 118 which overlies the blank between the windowed areas.
  • arms 120 are pivoted under rails 4 at 122 and are connected by links 124- to levers 126.
  • the levers 126 are fixed on a hexagonal shaft 128 which also carries an arm 130 connected to a piston rod -132 of a cylinder 134 pivoted at 136 to the machine frame.
  • the folding arms 120 are in the positions shown in FIG. 9 below the feed path of the blanks.
  • the leading end of each blank is fed by the feed grippers into position to be subsequently engaged by the arms 120 and the fold line is positioned at the ends of fingers 108.
  • pressure fluid is introduced into cylinder 134 and through arm 130 and levers 126, the folding arms are swung upward through the feed path to fold the leading end of the blank upward and over the trailing end to the position seen in FIG. 10.
  • each blank is fed along a feed path well defined by guideways 2, rails 4, strips 118 and fingers 108. From the time that each blank is placed in this path at the station A, the blank is at all times accurately controlled either by the feed grippers 6 or the fixed grippers 80. With such precise control the blanks may be fed at high speed with assurance of accurate location at each station. Obviously, certain substitution of mechanisms and stations can be. utilized without departing from the scope of the invention.
  • a folding station on said path and having at least one folding arm initially located adjacent said path, means for feeding each blank along said path to a position where one end is engageable by said arm, mean-s for swinging said arm from its initial location through said path for folding said one end over the other end of the blank, a pair of reciprocating feed grippers, means for closing said grippers on the blank held folded by said arm to hold the blank folded while the arm is returned to its initial location, and means for moving said closed grippers for advancing the folded blank from said folding station to a station for fixing the folded blank together.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Making Paper Articles (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Wrapping Of Specific Fragile Articles (AREA)
US505710A 1965-10-29 1965-10-29 Packaging machines Expired - Lifetime US3376691A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US505710A US3376691A (en) 1965-10-29 1965-10-29 Packaging machines
SE13820/66A SE335049B (enrdf_load_html_response) 1965-10-29 1966-10-12
GB48163/66A GB1170093A (en) 1965-10-29 1966-10-27 Improvements in or relating to Packaging Machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US505710A US3376691A (en) 1965-10-29 1965-10-29 Packaging machines

Publications (1)

Publication Number Publication Date
US3376691A true US3376691A (en) 1968-04-09

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ID=24011500

Family Applications (1)

Application Number Title Priority Date Filing Date
US505710A Expired - Lifetime US3376691A (en) 1965-10-29 1965-10-29 Packaging machines

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Country Link
US (1) US3376691A (enrdf_load_html_response)
GB (1) GB1170093A (enrdf_load_html_response)
SE (1) SE335049B (enrdf_load_html_response)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4921291A (enrdf_load_html_response) * 1972-06-17 1974-02-25

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3199263A (en) * 1962-04-09 1965-08-10 Curtis & Son Inc S Packaging apparatus
US3232021A (en) * 1961-03-15 1966-02-01 Wilson Bertram Arnold Ceiling structure

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3232021A (en) * 1961-03-15 1966-02-01 Wilson Bertram Arnold Ceiling structure
US3199263A (en) * 1962-04-09 1965-08-10 Curtis & Son Inc S Packaging apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4921291A (enrdf_load_html_response) * 1972-06-17 1974-02-25

Also Published As

Publication number Publication date
GB1170093A (en) 1969-11-12
SE335049B (enrdf_load_html_response) 1971-05-10

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