US2155398A - Wrapping machine - Google Patents

Wrapping machine Download PDF

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US2155398A
US2155398A US90091A US9009136A US2155398A US 2155398 A US2155398 A US 2155398A US 90091 A US90091 A US 90091A US 9009136 A US9009136 A US 9009136A US 2155398 A US2155398 A US 2155398A
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support
article
feeding
wrapper
folding
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US90091A
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Wilhelm B Bronander
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B11/00Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/06Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths
    • B65B11/18Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths in two or more straight paths
    • B65B11/26Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths in two or more straight paths 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

  • 'I'he invention has for its salient object to provide a machine for wrapping articles that is simple and practical in construction, comprises few :l parts and will rapidly, effectively and emciently wrap the articles or packages.
  • Another object of the invention is to provide a machine of the character described having the paper feed, cutting mechanism and folding and lu wrapping mechanism so relatively constructed and arranged that the machine can be easily and quickly adjusted for use in wrapping packages of different sizes.
  • FIG. 1 is a top plan view somewhat diagrammatic showing a machine constructed in accordu ance with the invention
  • Fig. 2 is a planview of the front portionof the machine, partly in section, parts being removed for the sake of clearness;
  • Fig. 3 is a longitudinal sectional elevation taken substantially'on line 3 3 of Fig. 1;
  • Fig. 4 is a diagrammatic view showing one set of feeding means in the position taken when the feeding members have discharged the article and wrapper tothe nal folding'and wrapping mech- :m anism;
  • Fig. 5 is a longitudinal sectional elevation taken substantially on line 5 5 of Fig. 1 showing the nal folding and wrapper closing mechanism
  • Fig. 6 is a detail elevational view of the initial 3.3 folding means
  • Fig. 7 is a sectional elevation taken substantially on line 1 1 ofFig. 3;
  • Fig. 11 is a detail sectional elevation of the feed sprocket for the paper cutting mechanism
  • Fig. 12 is an elevational view taken at right angles to Fig. 11;
  • Fig. 13 is an elevational view showing the gearing for driving the paper feed rollers;
  • Fig. 14 is a detail sectional elevation taken throughl the cutting knives
  • Fig. 15 is anend elevation of the rotary vcutting knife;r 55 Figs. 16, 17 and18 are perspective View:l ⁇ - show- Aing thewrapper in three different positions of the wrapping operation;
  • Fig. 19 is a plan view of the wrapper blank
  • Fig. 20 is an elevational view partly in section showing another form of feeding means for the 5 second feeding mechanism
  • Fig. 21 is an elevational view partly in section showing a further form of feeding mechanism; and Fig. 22 is a plan view of the form of feeding 1n member used on the rst feeding mechanism shown in Fig. 21.
  • the invention briey described consists of a wrapping machine comprising three successively actingfeeding and folding mechanisms. 15
  • 'I'he wrapper is fed in the form of a paper strip or web across the path of movement of the article and is fed at such a rate and severed at 'such a point in the cycle of operation that it is held by the feeding means as the sheet or web is folded 2.) across the top, advance end and bottom of the article.
  • the cutting mechanism cuts the 4strip or web when the proper length has been fed.
  • the article and wrapper are fed by endless feeding members along the initial table or support to the second support.
  • the article and wrapper are then fed by endless feeding means along the second support and during their passage along this support tucks are placed in the advance ends of the Wrapper and the ends are folded across the ends of the article.
  • the second feeding mechanism may be speeded up to operate at a faster rate of speed than the rst feed so as to"take the article and wrapper away" from the first feeding mechanism.
  • the article and wrapper are then discharged from the second support to a third table or support. They are initially fed along this support by a reciprocating feeding member and are then engaged and. fed by continuously acting feeding 40; members. During the movement along the third support the rear ends of the wrapper are tucked and are lfolded across the rear end of the article,
  • the articles X to be wrapped are disposed in a -hopper 33 which extends abo've the support
  • a 'I'he endless feeding members 31 and 38 are supported at one end on sprockets 39 carried by a shaft 48 mounted in a frame 4
  • the feeding members 31 and 38 pass over the sprockets -48 and -49 and beneath sprockets and 52 carried by a shaft 53.
  • the shafts 58 and 53 are driven by a chain 55 which engages sprockets 58 and 51Imounted on the shafts58and 53 and also engages a sprocket 58 mounted on a shaft 59 carried by the .frame members 4
  • the paper for the wrappers which in this in- Y stance may be wax paper or a heat sealing paper.
  • the paper feed rolls are driven from a shaft 18 on which the rotary cutting knife is mounted, as hereinafter described, by means of the gearing shown in Fig.V 13. From this figure it will be noted that a gear 1
  • the arm 13 can be adjusted about the axis of the shaft 64 to permit different sizes of gears to be used in the place of the gear 1
  • the arm 13 is held in adjusted position by means of a nut or bolt 16 which passes through an arcuate slot 11 formed in the upper end 18 of the arm.
  • the paper cutting mechanism comprises a rotary knife 88 carried by an arm 8
  • the shape of the knife 80 is shown in Figs. 14 and 15 from which it will be seen that the knife is V-shaped, the central portion of the knife .s hownat 85being disposed in advance of the end portions shown at 86.
  • the knife is beveled, as shown in Fig. 14.
  • the blanks cut from the paper strip by the knife take the form shown in Fig. 1'9, the object tral portion 81 ofthe V projects above the article and forms a tab by means of which the wrapper can be pulled away and removed from the article.
  • the rotary cutting knife is operated by a sprocket and chain connection to the shaft 58.
  • This shaft has mounted thereon a sprocket 88 which is connected by a chain 89 to drive a sprocket 9 8 which is adjustably connected to a disk or wheel 9
  • This adjustable connection is shown particularly in- Figs.
  • sixteen openings may be formed in the disk and fteen in the sprocket. 'IIhe sprocket can be rotated on the disk to any desired position to adjust the timing or opera.- tion of the cutting knife and when properly positioned a screw or bolt 94 is passed through the opening 93 in the sprocket and is threaded into the opening 92 in the disk.
  • the shaft can be properly timed to cut the paper in accordance with the length fed by the feed rolls, it being remembered that the rate of rotation of theseA rolls can be adjusted by changing the gear 1
  • This support or table comprises a pair of ward and away from each other by right and left hand screws
  • These spindles are connected by sprocket and chain connectionsvl I, H2.
  • the top wall above described extends above the support B as well as above the sup- POrt A.
  • 1 which receive the upper projecting end flaps or folds
  • 3 which receive the lower projecting end flaps or folds.
  • the upper slots are formed between the upper edges of the tuckers
  • the slots lead to downwardly inclined slots
  • the articles and wrappers are fed along the support B by means of spaced U-shaped feeding members which are carried by an endless belt or chain
  • 31 is secured to the shaft 59 which is driven in the manner hereinbefore described.
  • 35 are disposed centrally and between the endless chains 31 and 33. Furthermore, these members are so spaced that they will move upwardly in the direction of the arrow shown in Fig. 3 at a period in the operation of the vfeeding members 36 in which these members are out of the way so lthat the members 36 will not be at any time disposed'in the path of movement of the members
  • 35 is disposed with the upper leg of the U-shaped member in engagement with the rear edge of the article, the overlapping end
  • Fig. 4 illustrates the path of vmovement of the feeding member
  • 35 discharges the article and wrapper in the form shown in Fig. 16 to the third support C which, as shown in Fig. 1, is disposed at right angles to the supports A and B.
  • the support C has a side wall which forms an abutment for the article and wrapper and engages the closed edge
  • 48 is adjustably supported above the support C and can be vertically adjusted, as shown at
  • 90 is reciprocated back and forth on the support C and is so timed as to engage and feed the articles after they have been deposited on the support by the feeding members or lugs
  • 90 is pivoted at
  • 98 engages the upper surface of the arm
  • the first operation performed on the suppoit C is to place the end tucks
  • Fig. 20 there is illustrated a slightly different form of feeding mechanism for feeding the articles and wrappers over the support B.
  • the second feeding mechanism is mounted above the support B instead of below the support.
  • 'I'his mechanism comprises a plurality of feeding members
  • mounted on sprockets
  • 40 or upper free end of the wrapper snaps up as soon as the feeding membery
  • 00 moreover, insures the proper positioning of the upper flap
  • the upper conveyor 200 overlaps the de' livery end of the lower conveyor 20
  • 'I'he conveyor 200 is driven at a faster rate than the conveyor 20
  • Members 202 may be formed as shown in Fig. 22 tol engage the end of or rear edge of the article between the end edge portions vof the wrapper.
  • a support an endless carrier, a plurality of spaced feeding elements mounted on said carrier and movable successively over said support to feed articles to be wrapped, means for positioning wrapper blanks in4 the path of the articles fed along said support, a second support, folding means at the sides of said support, a second endless carrier and a plurality of spaced feeding elements mounted thereon and successively engageable with articles on the second support for feeding the articles and wrappers along'said second support, said two carriers and feeding elements being so relatively arranged that the two sets of feeding elements will operate without interference with each other, the feeding elements on the second carrier having spaced portions, one portion being engageable with the rear edge of the article being fed and the other portion being disposed below said vilrst portion, the lower end flap of the wrapper being disposed between said portions during the feeding movement.
  • a.support,rendless ⁇ means for feeding an article and wrapper along said support, a second support disposed in alinement with and spaced from the discharge end of the first support, folding means associated with the second support for folding the lateral ends of the wrapper across the sides of .the article.
  • a support endless means for feedingan article and wrapper along said support, a second support disposed in alinement with and spaced from the discharge end of the first support, folding means associated with the second support for folding the lateral ends of the wrapper across the sides of the article, an endless carrier, feeding members mounted thereon and movable upwardly through the space bel means for feeding an article and wrapper along said support, a second support disposed in alinement with and spaced from the discharge end of the first support, folding means associated with the second support for folding the lateral ends of the Wrapper across the sides of the article, an endless carrier, feeding members mounted with said supports f thereon and movable upwardly through thespace 'between the supports and along the second supsaid folding means, a third support having the receiving end of y its supporting surface spaced from and alined with the second support, the said feeding members operating to feed the articles and wrappers to the third support and being movable downwardly through the space between said second and third supports subsequent to the feeding operation thereof.
  • a wrapping machine means for feeding an article and wrapper, -means for folding the lateral ends of the wrapper across the sides of the article with the free ends projecting beyond said support, a second support disposed in alinement with and spaced from the discharge end of the first support, folding means associated with the second support for folding the lateral ends of the wrapper across the sides of the article, an endless carrier, feeding members mounted thereon and movable upwardly through the space between the supports and along the second support for feeding the articles and wrappers along the said support and in cooperative relation with said folding means, a third support having the receiving end of its supporting surface spaced from and alined with the second support, the said feeding membersl -being movable downwardly through the space between said second and third supports subsequentl to the feeding operation thereof, said third support'extending at right angles to said second support.
  • a wrapping machine means for feeding an article and wrapper, means for folding the lateral ends of the wrapper across the sides of the article with the free ends projecting beyond the rear end of the article, a support extending at right angles to the path of movement of said feeding meansand varranged to receive the article so wrapped, stationary tucking means associated with said support for tucking the wrapper at one edge thereof, and movable tucking means for tucking the other edge of the wrapper, said movable tucking means being movable within and in overlapping relation to the stationary tucking means.
  • a support means for feeding articles to be wrapped along said support, means for feeding a paper sheet across the path of movement of the articles, means for severing the sheet to form wrapper blanks, driving means for said severing means, and means incorporated in said driving means for regulating the severing means to vary the point of operation thereof in the cycle of operation ofthe machine.
  • a pair of spaced, alined, supports endless feeding means associated with each support for feeding an article and wrapper along said ports, means associated folding the wrapper around the article with ⁇ the ends projecting rearwardly beyond the rear edge of the article, means associated with said supports for folding the lateral edges of the wrapper against the lsides of article, a third support disposed at right anglesy to the other supports and arranged to receive the article and wrapper from the second support. and means associated with said third support for folding the ends of the wrapper against the rear edge of thea article.
  • a third support disposed at right.
  • a support means for feeding an article along said support, means for-feeding a strip of paper across the path of movement of the article, means 'for severing the strip with a V-shaped cut, means for folding the severed blankaround the article and for securing the point of the V-shaped end disposed at and projecting above the upper rear edge ofl the Wrapped package.
  • a support comprising endless feeding members and spaced feeding elements engageable with the rear edges of the articles to feed the articles along the support,.means for feeding a wrapper across the path of zmovement of the article, a second supv port forreceiving the article vand wrapper from the first support, means for feeding the articles along said second support, said last named feedingmeans including endless members and spaced feeding elements movable upwardly between said supports and between the advance ends of the first named endless feeding members, and tucking and folding means for tucking and folding the wrapper as the article and wrapper are fed along said second support.
  • a wrapping machine comprising a support, means for feeding articles to be wrapped along said support, means for feeding a sheet of paper across the path of movement of the article, means for severing the sheet to form a blank, means engageable with the wrapper for folding the wrapper downwardly on the top of the article as it is fed along said support, a second support arranged to receive the article and wrapper from the first support, feeding means engageable with the rear edge of the articles for feeding the articles along said second support, means for tucking the ad- Vance ends of the wrapper against-the ends of the article, means for folding the ends of the ⁇ wrapper acrossvthe ends of the article, a third support arranged to receive the article and wrapper from the second support, means for feeding the article and wrapper along said third support, rotating tuckers and stationary tuckers for tucking the rear ends of the wrapper against the rear edges of the article, .and means for folding will be cut after the article has fed the unseveredstrip across the advance end and top and bottom of the
  • a support having a slot therein, means for feeding articles along said support, atop wall above the support, means for feeding a strip of paper across the path of movement of the article, and severing means for said strip, driving means for said severing means, said driving means being so timed that the strip will be cut after the article has ⁇ ied the unsevered strip across the advance end and top and bottom of the article and is properly positioned around the article, thepaper feed being slower than the article feed.
  • a pair of spaced, aimed suppOrts feeding means associated with each support for feeding an' article and wrapper along said supports, means associated with said supports for folding the wrapper around the article with the ends projecting rearwardly beyond the rear edge of the article, means associated with said supports for folding the lateral edges of the wrapper againstthe sides of the article, a third support disposed-at right angles to the other supl ports and arranged to receive the article and wrapper from the second support, means disposed along one side of said third support for folding the ends of the wrapper against the rear edge of the article, reciprocating feeding means on said third support for initiating the feeding'movement of the article and wrapper thereon, means for operating said reciprocating feeding means at an increasing rate of speed during its ,feeding movement, and endless feeding means receiving the article and wrapper from the reciprocating feeding means and for feeding them along the support ⁇ and into cooperative relation to said folding means.
  • a pair of spaced, alined supports feeding means associated with each support for feeding an article and wrapper auna along said supports, means associated with saidv supports for folding the wrapper around the article with the ends projecting rearwardly beyond the rear edge of the article, means associated with said supports for folding the lateral edges of the wrapper against the sides of the article, a third support disposed at right angles to the other supports and arranged to receive the article and wrapper from the second support, means disposed along one side of said third support -for folding the ends of the wrapper against the rear edge of the article.
  • reciprocating feeding means on said third support for initiating the feeding move- @ment of the article and wrapper thereon, means for operating saidreciprocating feeding means at an increasing rate ofspeed during its feeding movement, and endless feeding means receiving the article and wrapper from the reciprocating .feeding means and for feeding them along the an article and wrapper, means for folding the' vlateral ends of the wrapper across the sides of the varticle with the free ends projecting beyond the rear end of the article, a support arranged -to receive the article so wrapped, stationary tucking means associated with said support for tucking the wrapper at one edge thereof, and movable tucking means for tucking the other edge of the wrapper, said movable tucking means being mov- 'v able beneath the upper end flap formed by the tucks to insure the positioning of said flap in alinement with the upper surface of the article and wrapper.
  • a support endless means for feeding an article and wrapper along said support, a second support disposed in alinement with the discharge end of the first support, folding means associated with the second support for folding the lateral ends of the wrapper across the sides of the article, an endless carrier, and. feeding members mounted thereon and movable upwardly through an opening between the supports and along the second support for feeding the articles and wrappers along the said support and in cooperative relation with said folding WILHELM B. BRONANDER.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)

Description

Apn'l 245, 1939 w. B. BRONANDER WRAPPI'NG MACHINE 4 ,Sheets-Sheet l Filed July 11, 1936 Ajxril 25, 1939. w. B. BRoNANDl-:R
WRAPPINGP MACHINE F'Hed Juiy 11, 1936 4 sheets-sheet 2' Apnl s, 1939.
W. B. BRONANDER f v WRAPPING MACHINE Filed July 11, 1936 4 sheets-shet v4 lNvEN'roR ATTO EYS Patented Apr. 25, 1939 UNITED STATES 'PATENT' OFFICE Wilhelm B. Bronander, Montclair, N. J. Application July 11, 1936, Serial No. 90,091
19 Claims.
'I'his invention relates to wrapping machines.
'I'he invention has for its salient object to provide a machine for wrapping articles that is simple and practical in construction, comprises few :l parts and will rapidly, effectively and emciently wrap the articles or packages.
Another object of the invention is to provide a machine of the character described having the paper feed, cutting mechanism and folding and lu wrapping mechanism so relatively constructed and arranged that the machine can be easily and quickly adjusted for use in wrapping packages of different sizes.
Further objects of the invention will appear i5 from the following specication taken in connection with the drawings which form a part of this application, and in which Fig. 1 is a top plan view somewhat diagrammatic showing a machine constructed in accordu ance with the invention; i
Fig. 2 is a planview of the front portionof the machine, partly in section, parts being removed for the sake of clearness;
Fig. 3 is a longitudinal sectional elevation taken substantially'on line 3 3 of Fig. 1;
Fig. 4 is a diagrammatic view showing one set of feeding means in the position taken when the feeding members have discharged the article and wrapper tothe nal folding'and wrapping mech- :m anism;
Fig. 5 is a longitudinal sectional elevation taken substantially on line 5 5 of Fig. 1 showing the nal folding and wrapper closing mechanism;
Fig. 6 is a detail elevational view of the initial 3.3 folding means;
Fig. 7 is a sectional elevation taken substantially on line 1 1 ofFig. 3;
Figs. 8 and 9 are sectional elevations taken sub` stantially on line 8 8 and 9 9 of Fig. 6; 4U Fig. 10 is a detail plan view showing the operation of the tuckers for tucking the rear ends of the wrapper prior to folding the ends across the rear end of the article;
Fig. 11 is a detail sectional elevation of the feed sprocket for the paper cutting mechanism;
Fig. 12 is an elevational view taken at right angles to Fig. 11; Fig. 13 is an elevational view showing the gearing for driving the paper feed rollers;
Fig." 14 is a detail sectional elevation taken throughl the cutting knives;
Fig. 15 is anend elevation of the rotary vcutting knife;r 55 Figs. 16, 17 and18 are perspective View:l`- show- Aing thewrapper in three different positions of the wrapping operation;
Fig. 19 is a plan view of the wrapper blank;
Fig. 20 is an elevational view partly in section showing another form of feeding means for the 5 second feeding mechanism;
Fig. 21 is an elevational view partly in section showing a further form of feeding mechanism; and Fig. 22 is a plan view of the form of feeding 1n member used on the rst feeding mechanism shown in Fig. 21.
The invention briey described consists of a wrapping machine comprising three successively actingfeeding and folding mechanisms. 15
'I'he wrapper is fed in the form of a paper strip or web across the path of movement of the article and is fed at such a rate and severed at 'such a point in the cycle of operation that it is held by the feeding means as the sheet or web is folded 2.) across the top, advance end and bottom of the article. The cutting mechanism cuts the 4strip or web when the proper length has been fed.
The article and wrapper are fed by endless feeding members along the initial table or support to the second support. The article and wrapper are then fed by endless feeding means along the second support and during their passage along this support tucks are placed in the advance ends of the Wrapper and the ends are folded across the ends of the article. The second feeding mechanism may be speeded up to operate at a faster rate of speed than the rst feed so as to"take the article and wrapper away" from the first feeding mechanism. I
The article and wrapper are then discharged from the second support to a third table or support. They are initially fed along this support by a reciprocating feeding member and are then engaged and. fed by continuously acting feeding 40; members. During the movement along the third support the rear ends of the wrapper are tucked and are lfolded across the rear end of the article,
thus completing the wrapping operation.
In` the particular form of the invention shown the last named support and feeding means are disposed at right angles to the first two supports and wrapper.
Further details of\the invention will appear from the following description. In the form of the invention illustrated in the drawings, there are three sets of operating mechanism which operate successively on the article Furthermore, there are three supports or tables along whichy the article and wrapper are fed. Ihe rst supporting table is shown. at A, the second at Band the third at C. It will be noted that the support or table C is disposed at right angles to the supports A and B. 'I'he support A comprises two sections 38 and 3| which are separated by a gap or space 32.
The articles X to be wrapped are disposed in a -hopper 33 which extends abo've the support A 'I'he endless feeding members 31 and 38 are supported at one end on sprockets 39 carried by a shaft 48 mounted in a frame 4|. Atthe other ends the feeding members 31 and 38 pass around idler sprockets 45 and 46 mounted on stub shafts 41 carried bythe frame members 4|. idlers45 and 48 the feeding members 31 and 38 'pass around sprockets 48 and 4x9 mounted on a shaft 58. The feeding members 31 and 38 pass over the sprockets -48 and -49 and beneath sprockets and 52 carried by a shaft 53. The shafts 58 and 53 are driven by a chain 55 which engages sprockets 58 and 51Imounted on the shafts58and 53 and also engages a sprocket 58 mounted on a shaft 59 carried by the .frame members 4|.
'Paper feed mechanism The paper for the wrappers, which in this in- Y stance may be wax paper or a heat sealing paper.
` presses the roll 83 toward the roll 62 to maintain the desired feeding pressure between the rolls.
The paper feed rolls are driven from a shaft 18 on which the rotary cutting knife is mounted, as hereinafter described, by means of the gearing shown in Fig.V 13. From this figure it will be noted that a gear 1| mounted on the shaft 18 meshes with a gear 12 carried by an arm 13 pivoted on the shaft 64. 'I'his shaft, on which is mounted the roll 82, has secured thereto a gear 14 which meshes with a gear 15 mountedon the shaft 65 which carries the fe'ecl roll 63.
The arm 13 can be adjusted about the axis of the shaft 64 to permit different sizes of gears to be used in the place of the gear 1|, thus varying the speed of rotation of the feed rolls and the rate and lengths of paper fed thereby. The arm 13 is held in adjusted position by means of a nut or bolt 16 which passes through an arcuate slot 11 formed in the upper end 18 of the arm.
From the Paper cutting mechanism The paper cutting mechanism comprises a rotary knife 88 carried by an arm 8| fixed to the shaft 18 and a stationary knife. 82 which `is adjustable toward and away from the axis or shaft 18 by means, of a screw 83. The shape of the knife 80 is shown in Figs. 14 and 15 from which it will be seen that the knife is V-shaped, the central portion of the knife .s hownat 85being disposed in advance of the end portions shown at 86. The knife is beveled, as shown in Fig. 14.
The blanks cut from the paper strip by the knife take the form shown in Fig. 1'9, the object tral portion 81 ofthe V projects above the article and forms a tab by means of which the wrapper can be pulled away and removed from the article. yThe rotary cutting knife is operated by a sprocket and chain connection to the shaft 58. This shaft has mounted thereon a sprocket 88 which is connected by a chain 89 to drive a sprocket 9 8 which is adjustably connected to a disk or wheel 9| fixed to the shaft 18. This adjustable connection is shown particularly in- Figs.
adjustment between these two parts can be secured. For instance, sixteen openings may be formed in the disk and fteen in the sprocket. 'IIhe sprocket can be rotated on the disk to any desired position to adjust the timing or opera.- tion of the cutting knife and when properly positioned a screw or bolt 94 is passed through the opening 93 in the sprocket and is threaded into the opening 92 in the disk. Thus, the shaft can be properly timed to cut the paper in accordance with the length fed by the feed rolls, it being remembered that the rate of rotation of theseA rolls can be adjusted by changing the gear 1|. It will also be evident that the cutting of the paper must be'properly timed with reference to the feeding of the article in order to feed the paper to the desired extent through the gap or slot 32 between the sections 38 and 3| of the support A. The paper should be so fed and severed that as the article engages the paper and feeds the paper forwardly on the support section 3| the free ends of the paper will properly overlap the rear end of the article.
' As the article and Wrapper are fed over the support 3| they will be disposed beneath a top wall |08 which is adjustably mounted above the support 3| and operates to holdthe wrapper down against the upper surfac of the article. The paper feed, article feed and cutter feed are so timed that the article will engage the paper and be foldedV around the advance end and top and bottom of the article before it is cut, the cut being made when the proper length has been fed to provide the overlapping ends of the right lengths.
' `The article and wrapper are fed by the feeding members 36 between the walls 3| and |88 and across the support vor table section 3| and are discharged thereby to the second support or table .B. This support or table comprises a pair of ward and away from each other by right and left hand screws |03 and |03 formed on spindles ||0, |I0. These spindles are connected by sprocket and chain connectionsvl I, H2. ||3 and one of the spindles has secured thereto a crank ||4 by means of which the spindles can be rotated. As these spindles are rotated the side walls |04 and |05 and the spaced supports |.02 and |03 are moved toward and away from each other. The top wall above described extends above the support B as well as above the sup- POrt A.
The walls |04 and |05-have formed at the entrance end thereof tuckers ||5, ||5 which tuck the advance edges of the wrapper against the ends of the article, one of the advanced edge tucks being shown at ||6 in Figs. 16, `1'( and 18. Above the tuckers are formed slots ||1 which receive the upper projecting end flaps or folds and below the tuckers are formed slots ||3 which receive the lower projecting end flaps or folds. The upper slots are formed between the upper edges of the tuckers ||5 andthe lower edges of adjustably mounted pieces ||9 having inclined upper edges which engage inclined supports |2| and are adjustable relative thereto, being secured in adjusted position by nuts |22. This adjustment is made to provide for different thicknesses of articles being wrapped.
The slots lead to downwardly inclined slots |23 which are formed between lower edges |24 of the side walls |04 and |05 andthe upper edges |25 of the tuckers ||5. lAs the upper end foldsy travel through the slots ||1 and downwardly through the slots |23 they will be folded downwardly and inwardly against the ends of the article. After this fold has been completed the lower projecting end folds or flaps engage the upwardly inclined slots |26 and are folded thereby upwardly and inwardly against the downwardly folded end flaps. Afterl these end naps have been folded against the ends of the article the article is fed between the heaters |30 which cause the wax in the wax paper to be softened, thus sealing the ends of the article.
The articles and wrappers are fed along the support B by means of spaced U-shaped feeding members which are carried by an endless belt or chain |36 mounted on sprockets |31 and |33. The sprocket |31 is secured to the shaft 59 which is driven in the manner hereinbefore described. From the showing in Fig. l it' will be noted that the feeding members |35 are disposed centrally and between the endless chains 31 and 33. Furthermore, these members are so spaced that they will move upwardly in the direction of the arrow shown in Fig. 3 at a period in the operation of the vfeeding members 36 in which these members are out of the way so lthat the members 36 will not be at any time disposed'in the path of movement of the members |35.
From the showing in Fig. 3 it will be noted that one of the feeding members |35 is disposed with the upper leg of the U-shaped member in engagement with the rear edge of the article, the overlapping end |40 of the wrapper being disposed between the two legs |4| and |42 of the feeding member |35.
Fig. 4 illustrates the path of vmovement of the feeding member |35 as it leaves the article and wrapper and from this figure it will be noted that the outer leg |4| o f the member |35 is in engagement with the end |40 of the wrapper and has folded this end downwardly. As soon as the feeding member |33 moves away from the end |40 of the wrapper this end will immediately snap upwardly to the position parallel to the upper overlapping end |45.
' From the foregoing description it will be noted that as the articles andY wrappers are fedvover the support B the front end tucks will be placed-in the 'wrapper and the end flaps will be folded across the ends of the wrapper and sealed in folded position by the operation of the heaters. At this stage in the operation the wrapper has been folded in the manner shown in Fig 16.`
, 'I'he final feeding operation ofthe feeding members |35 discharges the article and wrapper in the form shown in Fig. 16 to the third support C which, as shown in Fig. 1, is disposed at right angles to the supports A and B. The support C has a side wall which forms an abutment for the article and wrapper and engages the closed edge |5| of the wrapper. A top plate |48 is adjustably supported above the support C and can be vertically adjusted, as shown at |49 in Fig. 1. laterally from the other edge of the article, as shown in Fig. 3.
'I'he article and wrapper are fed along the support C by means of spaced feeding members |52 carried by an endless carrier |53 mounted on y sprockets |54 and |55 carried by spindles |56 and |51. The spindle or shaft |56 is driven by a bevel gear connection |58, |59 to the shaft 53.
It has been found that the operation of the endless Afeeding members 53 and members or lugs |52 at high speed causing the lugs to e'ngage against the sides of the article, tends to dent .in the article and damage the package and for this reason the lugs |52 do not engage and feed the article and wrapper immediately after it has been vdeposited on the-support C. They are, however, fed by a reciprocating feeding mechanism illustrated particularly in Fig. 5. In this figure there is shown an arm 90 having an angular head on the front end thereof consisting of an upper plate |9| adapted to engage over the top of the article and a rear plate |92 adapted to engage along the rear side of the article. The arm |90 is reciprocated back and forth on the support C and is so timed as to engage and feed the articles after they have been deposited on the support by the feeding members or lugs |35 or |80, hereinafter described. AAt its rear end the arm |90 is pivoted at |93 to the upper end of a lever |94 which is mounted on a fixed pivot |95 and is provided intermediate its ends with a roller |96 disposeddn engagementfwith a cam |91 mounted on the shaft |56. A spring |98 engages the upper surface of the arm |90 and holds the front end of the arm or head in engagement with the table or support C.
From the showing in Fig. 5 it will be seen that as the shaft |56 and cam |91 rotate the lever |94 will be oscillated about vits pivot |95 and will reciprocate thearm 90 andthe feeding head formed on the front end thereof. A suitable The free ends of the wrapper project spring, as shown, is provided to press the arm and at the limit of the feeding movement |90 the article and wrapper are moving at approximately the speed of movement of the lugs |35 or |80.
The first operation performed on the suppoit C is to place the end tucks |60 and |6| in the Wraper members |05 which are formed on a disk |00 mounted on a spindle |01 to which is secured a sprocket driven by the chain |00. From the showing in Fig. 10 it will be noted that the tucker forms the tuck |00 and moves within the end |03 of the stationary tucker |02. Thus, the tuck |80 is guided beneath the stationary tucker and held in position.
'I'he free ends |40 and |40 of the wrapper are folded inwardly against the rear end of the article by the operation of slots and |1| which operate in the same manner as the slots shown in Fig. 6. It will be noted that the upper end |00 is first folded downwardly and inwardly against the tucked ends and against the end of the article and the lower end |40 is then folded upwardly against the article and also against the folded end |40. The completed wrapper is shown in Fig. 18 from which, as above stated, it will be noted that the central portion of the 4end |40 extends slightly above the upper surface of the article forming a tab. f l,
`In Fig. 20 there is illustrated a slightly different form of feeding mechanism for feeding the articles and wrappers over the support B. In
this embodiment of the invention the second feeding mechanism is mounted above the support B instead of below the support. 'I'his mechanism comprises a plurality of feeding members |00 which are carried by an endless carrier I 8| mounted on sprockets |02 and |02. With the form of# feed shown in Fig. 3 there is a slight pause between thedlscharge of the articles and wrappers from the section 2| of support A to the support B and the feeding movement of the articles and wrappers along the support B. However, with the form of feed shown in Fig. 20 there is no pause between these two feeding mechanisms and the feeding members |00 come into operation as soon as the feeding members 06 have finished their feeding operation. From the' showing at the right hand end of Fig. 20 it will be noted that the upper flap |40 or upper free end of the wrapper snaps up as soon as the feeding membery |00 has finished its feeding operation and lmoved upwardly awayfrom the article and wrapper. 'I'he rotary tucker |00, moreover, insures the proper positioning of the upper flap |45 since the tucker bends the flap upwardly in case it has not already snapped up.
In the embodiment of the invention shown in Fig. 21, the upper conveyor 200 overlaps the de' livery end of the lower conveyor 20|. 'I'he conveyor 200 is driven at a faster rate than the conveyor 20|, by any suitable driving connections and thus moves the article and wrapper away from the feeding member 202 on conveyor 20| and prevents member 202 from snapping the lower flap downwardly as the member 202 moves downwardly.
Members 202 may be formed as shown in Fig. 22 tol engage the end of or rear edge of the article between the end edge portions vof the wrapper.
From the foregoing description it will be evident that simple,` practical and emcient wrapping mechanism has been provided and that the articles will be quickly or rapidly fed through s,1ss,ses
the machine yand wrapper by the folding and wrapping mechanism described. Furthermore. there is practically no interruption ito the feed of the articles through the machine.- l
Althoughcertain specific embodiments of' the invention have been particularly shown and described, it will be understood that the invention is capable of modification and that changes in the construction and in the arrangement of the various cooperating parts may be made without departing from the spirit or scope of the invention as expressed in the following claims.
What I claimis:
1. In a wrapping machine, a support, an endless carrier, a plurality of spaced feeding elements mounted on said carrier and movable successively over said support to feed articles to be wrapped, means for positioning wrapper blanks in4 the path of the articles fed along said support, a second support, folding means at the sides of said support, a second endless carrier and a plurality of spaced feeding elements mounted thereon and successively engageable with articles on the second support for feeding the articles and wrappers along'said second support, said two carriers and feeding elements being so relatively arranged that the two sets of feeding elements will operate without interference with each other, the feeding elements on the second carrier having spaced portions, one portion being engageable with the rear edge of the article being fed and the other portion being disposed below said vilrst portion, the lower end flap of the wrapper being disposed between said portions during the feeding movement.
2. In a wrapping machine, a.support,rendless` means for feeding an article and wrapper along said support, a second support disposed in alinement with and spaced from the discharge end of the first support, folding means associated with the second support for folding the lateral ends of the wrapper across the sides of .the article. an endless carrier, and feeding members mounted thereon and movable upwardly through the space between the supports and along the second support for feeding the articles and wrappers along the said support and in cooperative relation with said foldingy means.
3. In a wrapping machine, a support, endless means for feedingan article and wrapper along said support, a second support disposed in alinement with and spaced from the discharge end of the first support, folding means associated with the second support for folding the lateral ends of the wrapper across the sides of the article, an endless carrier, feeding members mounted thereon and movable upwardly through the space bel means for feeding an article and wrapper along said support, a second support disposed in alinement with and spaced from the discharge end of the first support, folding means associated with the second support for folding the lateral ends of the Wrapper across the sides of the article, an endless carrier, feeding members mounted with said supports f thereon and movable upwardly through thespace 'between the supports and along the second supsaid folding means, a third support having the receiving end of y its supporting surface spaced from and alined with the second support, the said feeding members operating to feed the articles and wrappers to the third support and being movable downwardly through the space between said second and third supports subsequent to the feeding operation thereof.
5. In a wrapping machine, means for feeding an article and wrapper, -means for folding the lateral ends of the wrapper across the sides of the article with the free ends projecting beyond said support, a second support disposed in alinement with and spaced from the discharge end of the first support, folding means associated with the second support for folding the lateral ends of the wrapper across the sides of the article, an endless carrier, feeding members mounted thereon and movable upwardly through the space between the supports and along the second support for feeding the articles and wrappers along the said support and in cooperative relation with said folding means, a third support having the receiving end of its supporting surface spaced from and alined with the second support, the said feeding membersl -being movable downwardly through the space between said second and third supports subsequentl to the feeding operation thereof, said third support'extending at right angles to said second support.
7. In a wrapping machine, means for feeding an article and wrapper, means for folding the lateral ends of the wrapper across the sides of the article with the free ends projecting beyond the rear end of the article, a support extending at right angles to the path of movement of said feeding meansand varranged to receive the article so wrapped, stationary tucking means associated with said support for tucking the wrapper at one edge thereof, and movable tucking means for tucking the other edge of the wrapper, said movable tucking means being movable within and in overlapping relation to the stationary tucking means.
v8. In a wrapping machine, a support, means for feeding articles to be wrapped along said support, means for feeding a paper sheet across the path of movement of the articles, means for severing the sheet to form wrapper blanks, driving means for said severing means, and means incorporated in said driving means for regulating the severing means to vary the point of operation thereof in the cycle of operation ofthe machine. l
9. In a wrapping machine, a pair of spaced, alined, supports, endless feeding means associated with each support for feeding an article and wrapper along said ports, means associated folding the wrapper around the article with `the ends projecting rearwardly beyond the rear edge of the article, means associated with said supports for folding the lateral edges of the wrapper against the lsides of article, a third support disposed at right anglesy to the other supports and arranged to receive the article and wrapper from the second support. and means associated with said third support for folding the ends of the wrapper against the rear edge of thea article.
l0. In a wrapping machine, a pair of spaced, alined, supports, feeding means associated with each support for feeding an article and wrapper along said supports, means associated with said supports for folding the wrapper around the article with the ends projecting rearwardly beyond the rear edge of the article, means associated with said supports for folding the lateral edges of the wrapper against the sides of the article. a third support disposed at right. angles to the other supports and arranged to receive the article and wrapper from the second support, means disposed along one side of said vthird support for folding the ends of the wrapper against the rear edge of the article, reciprocating feeding means on said .third support for initiating the feeding movement of the article and wrapper thereon, and endless feeding means receiving the article and wrapper from the reciprocating feeding means and for feeding them along the support and into cooperative relation to said folding means.
11. In a wrapping machine, a support, means for feeding an article along said support, means for-feeding a strip of paper across the path of movement of the article, means 'for severing the strip with a V-shaped cut, means for folding the severed blankaround the article and for securing the point of the V-shaped end disposed at and projecting above the upper rear edge ofl the Wrapped package. ,fm l
12. In a. wrapping machiiie, a support, feeding means comprising endless feeding members and spaced feeding elements engageable with the rear edges of the articles to feed the articles along the support,.means for feeding a wrapper across the path of zmovement of the article, a second supv port forreceiving the article vand wrapper from the first support, means for feeding the articles along said second support, said last named feedingmeans including endless members and spaced feeding elements movable upwardly between said supports and between the advance ends of the first named endless feeding members, and tucking and folding means for tucking and folding the wrapper as the article and wrapper are fed along said second support.
13. A wrapping machine comprising a support, means for feeding articles to be wrapped along said support, means for feeding a sheet of paper across the path of movement of the article, means for severing the sheet to form a blank, means engageable with the wrapper for folding the wrapper downwardly on the top of the article as it is fed along said support, a second support arranged to receive the article and wrapper from the first support, feeding means engageable with the rear edge of the articles for feeding the articles along said second support, means for tucking the ad- Vance ends of the wrapper against-the ends of the article, means for folding the ends of the^ wrapper acrossvthe ends of the article, a third support arranged to receive the article and wrapper from the second support, means for feeding the article and wrapper along said third support, rotating tuckers and stationary tuckers for tucking the rear ends of the wrapper against the rear edges of the article, .and means for folding will be cut after the article has fed the unseveredstrip across the advance end and top and bottom of the article and is properly positioned around the article.
15; In a wrapping machine, a support having a slot therein, means for feeding articles along said support, atop wall above the support, means for feeding a strip of paper across the path of movement of the article, and severing means for said strip, driving means for said severing means, said driving means being so timed that the strip will be cut after the article has `ied the unsevered strip across the advance end and top and bottom of the article and is properly positioned around the article, thepaper feed being slower than the article feed.
16. In a wrapping machine, a pair of spaced, aimed suppOrts, feeding means associated with each support for feeding an' article and wrapper along said supports, means associated with said supports for folding the wrapper around the article with the ends projecting rearwardly beyond the rear edge of the article, means associated with said supports for folding the lateral edges of the wrapper againstthe sides of the article, a third support disposed-at right angles to the other supl ports and arranged to receive the article and wrapper from the second support, means disposed along one side of said third support for folding the ends of the wrapper against the rear edge of the article, reciprocating feeding means on said third support for initiating the feeding'movement of the article and wrapper thereon, means for operating said reciprocating feeding means at an increasing rate of speed during its ,feeding movement, and endless feeding means receiving the article and wrapper from the reciprocating feeding means and for feeding them along the support` and into cooperative relation to said folding means.
17. In a wrapping machine, a pair of spaced, alined supports, feeding means associated with each support for feeding an article and wrapper auna along said supports, means associated with saidv supports for folding the wrapper around the article with the ends projecting rearwardly beyond the rear edge of the article, means associated with said supports for folding the lateral edges of the wrapper against the sides of the article, a third support disposed at right angles to the other supports and arranged to receive the article and wrapper from the second support, means disposed along one side of said third support -for folding the ends of the wrapper against the rear edge of the article. reciprocating feeding means on said third support for initiating the feeding move- @ment of the article and wrapper thereon, means for operating saidreciprocating feeding means at an increasing rate ofspeed during its feeding movement, and endless feeding means receiving the article and wrapper from the reciprocating .feeding means and for feeding them along the an article and wrapper, means for folding the' vlateral ends of the wrapper across the sides of the varticle with the free ends projecting beyond the rear end of the article, a support arranged -to receive the article so wrapped, stationary tucking means associated with said support for tucking the wrapper at one edge thereof, and movable tucking means for tucking the other edge of the wrapper, said movable tucking means being mov- 'v able beneath the upper end flap formed by the tucks to insure the positioning of said flap in alinement with the upper surface of the article and wrapper.
19. In a wrapping machine, a support, endless means for feeding an article and wrapper along said support, a second support disposed in alinement with the discharge end of the first support, folding means associated with the second support for folding the lateral ends of the wrapper across the sides of the article, an endless carrier, and. feeding members mounted thereon and movable upwardly through an opening between the supports and along the second support for feeding the articles and wrappers along the said support and in cooperative relation with said folding WILHELM B. BRONANDER.
US90091A 1936-07-11 1936-07-11 Wrapping machine Expired - Lifetime US2155398A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2426314A (en) * 1942-05-08 1947-08-26 Redington Co F B Wrapping machine
US2546951A (en) * 1945-10-11 1951-03-27 Gen Candy Corp Article transfer mechanism
US2624448A (en) * 1946-11-19 1953-01-06 Clarence J Peterson Conveyer mechanism for box wrapping machines
US2894362A (en) * 1953-02-20 1959-07-14 Cargill Wrapping machine
US2900777A (en) * 1957-02-28 1959-08-25 Package Machinery Co Wrapping machine folding channel side wall and conveyor mounting means
DE1170859B (en) * 1961-03-07 1964-05-21 Hesser Ag Maschf Device on wrapping machines for folding wrapping blanks around block-shaped objects
US20080209856A1 (en) * 2004-03-12 2008-09-04 Tokyo Automatic Machinery Works, Ltd. Work Piece Wrapping Apparatus

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2426314A (en) * 1942-05-08 1947-08-26 Redington Co F B Wrapping machine
US2546951A (en) * 1945-10-11 1951-03-27 Gen Candy Corp Article transfer mechanism
US2624448A (en) * 1946-11-19 1953-01-06 Clarence J Peterson Conveyer mechanism for box wrapping machines
US2894362A (en) * 1953-02-20 1959-07-14 Cargill Wrapping machine
US2900777A (en) * 1957-02-28 1959-08-25 Package Machinery Co Wrapping machine folding channel side wall and conveyor mounting means
DE1170859B (en) * 1961-03-07 1964-05-21 Hesser Ag Maschf Device on wrapping machines for folding wrapping blanks around block-shaped objects
US20080209856A1 (en) * 2004-03-12 2008-09-04 Tokyo Automatic Machinery Works, Ltd. Work Piece Wrapping Apparatus
US7607277B2 (en) * 2004-03-12 2009-10-27 Tokyo Automatic Machinery Works, Ltd. Work piece wrapping apparatus

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