US3313086A - Wrapping piles of sheet material - Google Patents
Wrapping piles of sheet material Download PDFInfo
- Publication number
- US3313086A US3313086A US344962A US34496264A US3313086A US 3313086 A US3313086 A US 3313086A US 344962 A US344962 A US 344962A US 34496264 A US34496264 A US 34496264A US 3313086 A US3313086 A US 3313086A
- Authority
- US
- United States
- Prior art keywords
- wrapping
- sheet
- pile
- folding
- sheets
- 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
Links
- 239000000463 material Substances 0.000 title claims description 11
- 230000033001 locomotion Effects 0.000 claims description 5
- 230000008093 supporting effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 description 5
- 238000012856 packing Methods 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
Images
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
- 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
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
Definitions
- the present invention relates to a method of and an automatic device for positioning and folding wrapping material such as sheets of pulp or paper onto a pile of sheet-material, e.g. pulp, said wrapping-sheets being fed underneath and/ or on top of said pulp pile to be wrapped, whereafter at least two opposite edge regions of the wrapping-sheet or wrapping-sheets are folded vertically, snugly against the adjacent vertical faces of the pile.
- said pile together with a lower wrapping-sheet are first lowered down into a lower folding device, whereupon an upper wrapping-sheet is placed on top of the pile and in a second folding step is folded by moving the pile together with said latter wrapping-sheet upwardly into an upper folding device.
- the invention also relates to an apparatus for carrying out this process.
- FIGURE 1 is a side view of the apparatus with a bottom wrapping-sheet introduced under the pile of sheets to be wrapped;
- FIGURE 2 is a cross-section of the apparatus with the folding of the bottom wrapping-sheet in progress
- FIGURE 3 is a side view of the apparatus with a top wrapping-sheet introduced and the bottom wrapping-sheet finally folded;
- FIGURE 4 is a cross-section of the apparatus with the folding of the top wrapping-sheet of the pile in progress.
- FIGURE 5 is a cross-section of the apparatus with both the bottom wrapping-sheet and the top wrappingsheet finally folded.
- the pile of sheets 1 is conveyed by means of a conveyor 1a, travelling around conveyor rollers 1b, onto a bottom wrapping-sheet 2, supplied between rollers 2a, 2b.
- the sheets 1 and 2 then pass onto an intermediate conveyor 3a which feeds them onto a vertically displaceable conveyor 3 in a folding apparatus comprising upper and lower folding devices 6, 7.
- the conveyor 3 is supported by a hydraulically or pneumatically operated piston rod 30. On retraction of said piston rod 30 (FIGURE 2), the conveyor 3 will be lowered between vertical reversible conveyor elements 4 so as to initiate the folding of the bottom wrapping-sheet 2 upwards about the pile 1.
- the bottom wrapping-sheet 2 is finally folded (FIGURE 3).
- a top wrapping-sheet 5 is fed onto the top of the pile of sheets 1, and a vertically displaceable press-plate 6, disposed above the pile of sheets 1, is lowered against the top wrapping-sheet 5 thus inserted, said plate 6 pressing said sheet 5 tightly against the pile of sheets 1.
- the conveyor 3 is then elevated, whereby the direction of motion of the conveyors 4 will be reversed, the top wrappingsheet 5 with the pile of sheets 1 being conveyed upwardly between folding elements 7 (FIGURE 4).
- the press-plate 6 is lifted from the top wrapping-sheet 5.
- a pile of sheets with opposed folded flaps of the bottom wrapping-sheet 2 and the top wrapping-sheet 5 is now ready, and the conveyor 3 and a subsequent conveyor 3b can now convey the pile of wrapped sheets away from the wrapping apparatus.
- the two remaining flaps of the wrapping-sheets 2, 5 can be folded in a suitable manner, for instance in a similar machine, whereafter the bale can be tied in a usual manner.
- the method can also be carried out by placing both the bottom wrapping-sheet and the top wrapping-sheet on the pile simultaneously, whereafter the folding of the wrapping-sheets takes place one after the other, possibly by folding the upper sheet first, by way of an upward displacement of the pile. Possibly, also the elements folding the Wrapping-sheets can be displaceable in vertical direction in relation to a pile at rest.
- Apparatus for folding wrapping-sheets about piled sheet-material comprising support means for supporting a pile of sheet-material, means for positioning a first wrapping-sheet in contact with a horizontal face of said pile with at least two opposed edge regions of said first wrapping-sheet extending beyond said pile, first folding means in vertical alignment with said supporting means, and means for effecting vertical movement of said support means relatively to said first folding means to fold said regions about the adjacent vertical sides of the pile, means for positioning a second wrapping-sheet in contact with the other horizontal base of said pile with at least two opposed edge regions of said second wrapping-sheet extending beyond said pile, second folding means in vertical alignment with said support means, and means for effecting vertical movement to said support means relatively to said second folding means to fold said regions against the adjacent vertical surfaces of the pile into overlapping relationship with the corresponding edge regions of said first wrapping-sheet.
- Apparatus as claimed in claim 1 including upper and lower folding devices and means for moving said support means upwards and downwards in relation to said folding devices to fold upper and lower wrappingsheets snugly against the vertical faces of said pile, the lower folding device being provided with two vertical reversible endless belts and the upper folding device being provided with two spaced vertical plates.
- Apparatus according to claim 1 characterized by means for feeding a bottom wrapping-sheet under the pile during transport of the pile to the support means and for feeding a top wrapping-sheet onto the top of the pile References Cited by the Examiner when the pile is in its lowered position.
- UNITED STATES PATENTS 4.
- Apparatus according to clalm 2 characterized in that above the pile of sheets there is disposed at press- 2,291,645 8/1942 Nordqulst 53-62 plate which is displaceable in vertical direction to hold the 5 2685 ,15 7 8/1954 Doepel at 53-428 top wrapping-sheet on top of the pile during the folding 219961862 8/1961 Johnson et 53-228 of said top wrapping sheet.
- Apparatus according to claim 3 characterized by means for feeding a bottom wrapping-sheet under the fi i g d pile during transport of the pile to the support means and 10 e e an for feeding a top wrapping-sheet onto the top of the pile FRANCIS S HUSAR Primary Examiner when the pile is in its lowered position.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Basic Packing Technique (AREA)
Description
April 11, 1967 5. 5. E. JOHANSSON 3,313,086
WRAPPING FILES OF SHEET MATERIAL Filed Feb. 14, 1964 2 Sheets-Sheet 1 v I INVENTOR 680/? 6. 5 JOHA/YJLSO/V BYM /WWV ATTORNEYS.
April 1957 B. G. E. JOHANSSON 3,313,086
WRAPPING FILES OF SHEET MATERIAL Filed Feb. 14, 1964 2 Sheets-Sheet 2 3c 3 4 w WXK 3c Q k\\\\ I |NVENTOR 5/90 6. 5 Q/OAQ/WSQV ATTORNEYS.
Patented Apr. 11, 1967 3,313,086 WRAPPING PILES F SHEET MATERIAL Bror Gustav Erland Johansson, Sundbyherg, Sweden, assignor to Ab Nordstroms Linbanor, Stockholm, Sweden Filed Feb. 14, 1964, Ser. No. 344,962 Claims. (Cl. 53-228) Wrapping of sheet-material of large size, such as sheets of paper pulp in piles, is mainly carried out manually. In pulp mills, the pulp sheets arriving from the drying machines are usually stacked in piles, which are then Wrapped with pulp sheets of larger size, said pulp wrappers comprising one top sheet and one bottom sheet. Hitherto, wrapping of the pulp piles with the pulp wrappers, as Well as tying of the pulp bales with wires, has been effected in the packing press. However, improved handling methods have been developed for the purpose of saving labour in the process of packing the pulp piles. The presses now operate with increased compression pressure, which permits the pile of sheets to be removed from the press without substantial expansion .and it is subsequently wrapped and tied in special machines.
The present invention relates to a method of and an automatic device for positioning and folding wrapping material such as sheets of pulp or paper onto a pile of sheet-material, e.g. pulp, said wrapping-sheets being fed underneath and/ or on top of said pulp pile to be wrapped, whereafter at least two opposite edge regions of the wrapping-sheet or wrapping-sheets are folded vertically, snugly against the adjacent vertical faces of the pile. Preferably, said pile together with a lower wrapping-sheet are first lowered down into a lower folding device, whereupon an upper wrapping-sheet is placed on top of the pile and in a second folding step is folded by moving the pile together with said latter wrapping-sheet upwardly into an upper folding device.
The invention also relates to an apparatus for carrying out this process.
One embodiment of the apparatus according to the invention is shown diagrammatically in the accompanying drawings, in which:
FIGURE 1 is a side view of the apparatus with a bottom wrapping-sheet introduced under the pile of sheets to be wrapped;
FIGURE 2 is a cross-section of the apparatus with the folding of the bottom wrapping-sheet in progress;
FIGURE 3 is a side view of the apparatus with a top wrapping-sheet introduced and the bottom wrapping-sheet finally folded;
FIGURE 4 is a cross-section of the apparatus with the folding of the top wrapping-sheet of the pile in progress; and
FIGURE 5 is a cross-section of the apparatus with both the bottom wrapping-sheet and the top wrappingsheet finally folded.
As shown in FIGURE 1, the pile of sheets 1 is conveyed by means of a conveyor 1a, travelling around conveyor rollers 1b, onto a bottom wrapping-sheet 2, supplied between rollers 2a, 2b. The sheets 1 and 2 then pass onto an intermediate conveyor 3a which feeds them onto a vertically displaceable conveyor 3 in a folding apparatus comprising upper and lower folding devices 6, 7. The conveyor 3 is supported by a hydraulically or pneumatically operated piston rod 30. On retraction of said piston rod 30 (FIGURE 2), the conveyor 3 will be lowered between vertical reversible conveyor elements 4 so as to initiate the folding of the bottom wrapping-sheet 2 upwards about the pile 1. When the conveyor 3 has reached its lowermost position the bottom wrapping-sheet 2 is is finally folded (FIGURE 3). In this position, a top wrapping-sheet 5 is fed onto the top of the pile of sheets 1, and a vertically displaceable press-plate 6, disposed above the pile of sheets 1, is lowered against the top wrapping-sheet 5 thus inserted, said plate 6 pressing said sheet 5 tightly against the pile of sheets 1. The conveyor 3 is then elevated, whereby the direction of motion of the conveyors 4 will be reversed, the top wrappingsheet 5 with the pile of sheets 1 being conveyed upwardly between folding elements 7 (FIGURE 4). When the conveyor 3 has reached its uppermost position (FIGURE 5), the press-plate 6 is lifted from the top wrapping-sheet 5. A pile of sheets with opposed folded flaps of the bottom wrapping-sheet 2 and the top wrapping-sheet 5 is now ready, and the conveyor 3 and a subsequent conveyor 3b can now convey the pile of wrapped sheets away from the wrapping apparatus.
The two remaining flaps of the wrapping- sheets 2, 5 can be folded in a suitable manner, for instance in a similar machine, whereafter the bale can be tied in a usual manner.
The method can also be carried out by placing both the bottom wrapping-sheet and the top wrapping-sheet on the pile simultaneously, whereafter the folding of the wrapping-sheets takes place one after the other, possibly by folding the upper sheet first, by way of an upward displacement of the pile. Possibly, also the elements folding the Wrapping-sheets can be displaceable in vertical direction in relation to a pile at rest.
What I claim as my invention is:
1. Apparatus for folding wrapping-sheets about piled sheet-material comprising support means for supporting a pile of sheet-material, means for positioning a first wrapping-sheet in contact with a horizontal face of said pile with at least two opposed edge regions of said first wrapping-sheet extending beyond said pile, first folding means in vertical alignment with said supporting means, and means for effecting vertical movement of said support means relatively to said first folding means to fold said regions about the adjacent vertical sides of the pile, means for positioning a second wrapping-sheet in contact with the other horizontal base of said pile with at least two opposed edge regions of said second wrapping-sheet extending beyond said pile, second folding means in vertical alignment with said support means, and means for effecting vertical movement to said support means relatively to said second folding means to fold said regions against the adjacent vertical surfaces of the pile into overlapping relationship with the corresponding edge regions of said first wrapping-sheet.
2. Apparatus as claimed in claim 1, including upper and lower folding devices and means for moving said support means upwards and downwards in relation to said folding devices to fold upper and lower wrappingsheets snugly against the vertical faces of said pile, the lower folding device being provided with two vertical reversible endless belts and the upper folding device being provided with two spaced vertical plates.
3. Apparatus according to claim 1, characterized by means for feeding a bottom wrapping-sheet under the pile during transport of the pile to the support means and for feeding a top wrapping-sheet onto the top of the pile References Cited by the Examiner when the pile is in its lowered position. UNITED STATES PATENTS 4. Apparatus according to clalm 2, characterized in that above the pile of sheets there is disposed at press- 2,291,645 8/1942 Nordqulst 53-62 plate which is displaceable in vertical direction to hold the 5 2685 ,15 7 8/1954 Doepel at 53-428 top wrapping-sheet on top of the pile during the folding 219961862 8/1961 Johnson et 53-228 of said top wrapping sheet. FQREIGN PATENTS 5. Apparatus according to claim 3, characterized by means for feeding a bottom wrapping-sheet under the fi i g d pile during transport of the pile to the support means and 10 e e an for feeding a top wrapping-sheet onto the top of the pile FRANCIS S HUSAR Primary Examiner when the pile is in its lowered position. I
Claims (1)
1. APPARATUS FOR FOLDING WRAPPING-SHEETS ABOUT PILED SHEET-MATERIAL COMPRISING SUPPORT MEANS FOR SUPPORTING A PILE OF SHEET-MATERIAL, MEANS FOR POSITIONING A FIRST WRAPPING-SHEET IN CONTACT WITH A HORIZONTAL FACE OF SAID PILE WITH AT LEAST TWO OPPOSED EDGE REGIONS OF SAID FIRST WRAPPING-SHEET EXTENDING BEYOND SAID PILE, FIRST FOLDING MEANS IN VERTICAL ALIGNMENT WITH SAID SUPPORTING MEANS, AND MEANS FOR EFFECTING VERTICAL MOVEMENT OF SAID SUPPORT MEANS RELATIVELY TO SAID FIRST FOLDING MEANS TO FOLD SAID REGIONS ABOUT THE ADJACENT VERTICAL SIDES OF THE PILE, MEANS FOR POSITIONING A SECOND WRAPPING-SHEET IN CONTACT WITH THE OTHER HORIZONTAL BASE OF SAID PILE WITH AT LEAST TWO OPPOSED EDGE REGIONS OF SAID SECOND WRAPPING-SHEET EXTENDING BEYOND SAID PILE, SECOND FOLDING MEANS IN VERTICAL ALIGNMENT WITH SAID SUPPORT MEANS, AND MEANS FOR EFFECTING VERTICAL MOVEMENT TO SAID SUPPORT MEANS RELATIVELY TO SAID SECOND FOLDING MEANS TO FOLD SAID REGIONS AGAINST THE ADJACENT VERTICAL SURFACES OF THE PILE INTO OVERLAPPING RELATIONSHIP WITH THE CORRESPONDING EDGE REGIONS OF SAID FIRST WRAPPING-SHEET.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US344962A US3313086A (en) | 1964-02-14 | 1964-02-14 | Wrapping piles of sheet material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US344962A US3313086A (en) | 1964-02-14 | 1964-02-14 | Wrapping piles of sheet material |
Publications (1)
Publication Number | Publication Date |
---|---|
US3313086A true US3313086A (en) | 1967-04-11 |
Family
ID=23352854
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US344962A Expired - Lifetime US3313086A (en) | 1964-02-14 | 1964-02-14 | Wrapping piles of sheet material |
Country Status (1)
Country | Link |
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US (1) | US3313086A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4085564A (en) * | 1974-08-27 | 1978-04-25 | Focke & Pfuhl | Method and apparatus for making tray-type packets |
US5155973A (en) * | 1991-05-14 | 1992-10-20 | Webcraft Technologies, Inc. | Composite wrap and method for wrapping multi-page items |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL65627C (en) * | ||||
AT127495B (en) * | 1929-08-08 | 1932-03-25 | Muller J C & Co | Method and device for banding boxes and. like objects. |
US2291645A (en) * | 1939-06-14 | 1942-08-04 | American Can Co | Method of packaging articles |
US2685157A (en) * | 1949-07-09 | 1954-08-03 | Lynch Corp | Machine for wrapping articles and control therefor |
US2996862A (en) * | 1959-08-26 | 1961-08-22 | Certain Teed Prod Corp | Shingle bundle wrapping equipment |
-
1964
- 1964-02-14 US US344962A patent/US3313086A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL65627C (en) * | ||||
AT127495B (en) * | 1929-08-08 | 1932-03-25 | Muller J C & Co | Method and device for banding boxes and. like objects. |
US2291645A (en) * | 1939-06-14 | 1942-08-04 | American Can Co | Method of packaging articles |
US2685157A (en) * | 1949-07-09 | 1954-08-03 | Lynch Corp | Machine for wrapping articles and control therefor |
US2996862A (en) * | 1959-08-26 | 1961-08-22 | Certain Teed Prod Corp | Shingle bundle wrapping equipment |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4085564A (en) * | 1974-08-27 | 1978-04-25 | Focke & Pfuhl | Method and apparatus for making tray-type packets |
US5155973A (en) * | 1991-05-14 | 1992-10-20 | Webcraft Technologies, Inc. | Composite wrap and method for wrapping multi-page items |
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