WO2001017697A1 - Sheet stacking device - Google Patents
Sheet stacking device Download PDFInfo
- Publication number
- WO2001017697A1 WO2001017697A1 PCT/US1999/020101 US9920101W WO0117697A1 WO 2001017697 A1 WO2001017697 A1 WO 2001017697A1 US 9920101 W US9920101 W US 9920101W WO 0117697 A1 WO0117697 A1 WO 0117697A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sheet
- support bed
- rollers
- along
- path
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
- B65H29/26—Delivering or advancing articles from machines; Advancing articles to or into piles by dropping the articles
- B65H29/36—Delivering or advancing articles from machines; Advancing articles to or into piles by dropping the articles from tapes, bands, or rollers rolled from under the articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2403/00—Power transmission; Driving means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2404/00—Parts for transporting or guiding the handled material
- B65H2404/30—Chains
- B65H2404/31—Chains with auxiliary handling means
- B65H2404/313—Bars, rods, e.g. bridging two chains running synchronously
Definitions
- the present invention relates to a stacking device, and more particularly, to a stacking device for stacking sheet material.
- the present invention is particularly applicable in stacking cut-to-length sheets from a generally continuous source, and shall be described with particular reference thereto. It will, of course, be appreciated that the present invention has other broader applications and may be used in stacking other types of sheet material.
- the present invention provides a device for stacking sheet material, such as cut-to-length sheets that are cut from a generally continuous source, that minimizes physical handling and gripping of the sheet.
- a sheet stacking device comprised of a sheet support bed comprised of a plurality of side-by-side rollers. Each of the rollers is freely rotatable about a respective roller axis.
- a support bed drive assembly is provided for moving the sheet support bed in a predetermined direction along a closed path. The path has an upper horizontal run and a lower horizontal run and is dimensioned such that a gap exists between a leading end and a trailing end of the sheet support bed. The gap moves along the path as the sheet support bed moves along the path.
- a roller control assembly is provided for selectively controlling rotation of each of the rollers about its respective roller axis.
- a controller selectively and sequentially controls the operation of the support bed drive assembly and the roller drive assembly.
- the stacking device is operable to perform the following operational steps: a) causing the support bed drive assembly to move the sheet support bed to a sheet receiving position on the upper run of the path; b) causing the roller control assembly to allow the rollers to rotate freely to receive a sheet to be stacked on the support bed; c) causing the support bed drive assembly to move the sheet support bed at a predetermined speed along the path to move the sheet to a "stacking position"; d) when the sheet is at the stacking position, causing the roller control assembly to rotate the roller in a predetermined direction at a predetermined speed while the support bed continues to move along the path, wherein the rollers are operable to convey the sheet in a direction opposite the direction of the support bed at a speed wherein the sheet remains essentially stationary at the "stacking position”; e) continuously driving the sheet support bed along the path and continuously rotating the roller wherein the sheet becomes unsupported
- a sheet stacking device comprised of a sheet support bed having a first end and a second end.
- the sheet support bed is comprised of a plurality of side-by-side rollers, each of the rollers being freely rotatable about an associated roller axis.
- a drive assembly moves the sheet support bed in a predetermined direction along a closed path, the path having a horizontal upper run and a horizontal lower run, and is dimensioned such that a space exists between the first end and the second end of the sheet support bed as the sheet support bed moves along the path.
- a roller control assembly selectively and sequentially controls rotation of select ones of the rollers at select intervals during a stacking operation, wherein the stacking device is operable to: receive a sheet to be stacked on the sheet support bed when the support bed is disposed along the upper run; convey the sheet along the upper run on the support bed to a "staking position" on the upper run; cause the roller control assembly to rotate rollers disposed along the upper run in a direction such that the sheet remains essentially in the stacking position as the sheet support bed continues to move along the path, the sheet dropping through the space between the first and the second end of the sheet support bed onto the rollers of the sheet support bed on the lower run when the support bed moves from the upper run to the lower run; and cause the roller control assembly to rotate rollers disposed along the lower run in a direction such that the sheet remains essentially in the stacking position as the sheet support bed continues to move along the path, the sheet dropping through the space between the first end and the second end of the sheet support bed onto a stack of sheets when the support bed moves from the lower
- a method of stacking sheet material comprising the steps of: a) conveying a sheet to be stacked onto the surface of a sheet support bed, the support bed comprised of a plurality of side-by-side rollers, each of the rollers being rotatable about a respective roller axis, the support bed being movable in a predetermined direction along a closed path having a horizontal upper run and a horizontal lower run, the path dimensioned such that a space exists between distal ends of the support bed, the space moving along the path as the support bed moves along the path; b) moving the support bed along the path to move the sheet along the upper path run toward a stacking position; c) causing the rollers along the upper run to rotate when the sheet reaches the stacking position, the roller rotating in a direction such that the sheet remains essentially stationary on the support bed at the stacking position as the support bed continues to move along the path, the sheet falling generally vertically onto the support bed on the lower run when
- FIG. 1 is a partially sectioned, side elevational view of a sheet-stacking device, illustrating a preferred embodiment of the present invention
- FIG. 2 is a top plan view of the sheet stacking device shown in FIG. 1;
- FIG. 3 is a sectional view taken along lines 3-3 of FIG. 1;
- FIGS. A-4K are schematic side elevational views of the sheet stacking device shown in FIG. 1 , illustrating a sequence involved in stacking a sheet;
- FIGS. 5 A and 5B are schematic side elevational views of the sheet stacking device shown in FIG. 1, illustrating a sequence for diverting a defective sheet from the stacking process;
- FIG. 6 is a schematic view showing two stacking devices in alignment for stacking sheets of different size or for sequentially stacking of sheets of the same size;
- FIG. 7 is a schematic control diagram showing a control system for the stacking device shown in FIG. 1.
- FIGS. 1-3 show a sheet stacking device 10 illustrating a preferred embodiment of the present invention.
- Sheet stacking device 10 is adapted to receive individual sheets, designated S, of a planar material at a first position relative thereto, and to stack such sheets S into a vertical stack at a second position.
- sheet stacking device 10 is shown together with a sheet cutting device 20 that is operable to cut to length sheets S from a generally continuous length of material (not shown).
- Sheet cutting device 20 in and of itself forms no part of the present invention, and is shown solely for the purpose of illustration.
- Sheet cutting device 20 merely represents a source of "cut-to-length sheets" S to be stacked. It will be appreciated from a further reading of the specification that sheets S need not be cut from continuous roll, but may be formed in a flat planar configuration by any suitable process.
- FIG. 1 shows a cutting assembly 24 comprised of a movable upper cutting die 26 and a stationary lower cutting die 28. Supports 32, 34 on opposite sides of cutting assembly 24 support the material relative to cutting dies 26, 28. Cutting assembly 24 is operable to repeatedly shear like sized sheets S from the roll material and to provide individual sheets S to stacking device 10 at the aforementioned first position.
- Sheet stacking device 10 is disposed adjacent to the supply path at a predetermined elevation relative thereto to receive sheets S from sheet cutting device 20.
- sheet stacking device 10 is comprised of a frame assembly 40, a sheet transport assembly 60, a roller control assembly 120 and a stacking assembly
- FRAME ASSEMBLY Frame assembly 40 is comprised of two spaced-apart plates 42, 44 that are vertically oriented and parallel to each other. Plates 42, 44 define the side walls of sheet stacking device 10 and are supported by vertical legs 46, as best seen in FIG. 1.
- Transverse beams 48 connect plates 42, 44 to each other and define a predetermined spacing therebetween. In the embodiment shown, legs 46 and beams 48 are formed of rectangular pipe.
- Sheet transport assembly 60 is disposed between plates 42, 44.
- Sheet transport assembly 60 is basically comprised of a plurality of rollers 72 that are movable along an endless path.
- the path of rollers 72 is generally defined by a pair of elongated, upper tracks, designated 64 and 65, and a pair of elongated lower tracks 66 and 67, that are best seen in FIG. 3.
- Upper tracks 64 and 65 are mirror images of each other, and lower tracks 66 and 67 are also mirror images of each other.
- Lower tracks 66 and 67 are attached to side plates 42, 44, respectively such that the upper surfaces thereof are in horizontal alignment with each other, as seen in FIG. 3.
- upper tracks 64 and 65 are attached to side plate 42, 44 such that the upper surfaces thereof are in horizontal alignment.
- Tracks 64, 65, 66 and 67 are attached to side plates 42, 44 by conventional fasteners 68.
- the upper surfaces of upper tracks 64 and 65 and lower tracks 66 and 67 are slightly convex from one end to the other, as best seen in FIG. 1.
- the upper surfaces of tracks 64, 65, 66 and 67 need not be slightly convex to practice the present invention. These surfaces may be flat.
- the upper surface of upper tracks 64, 65 are slightly convex for better contact with flexible belt 132 that is described in greater detail below.
- the upper surfaces of lower tracks 66 and 67 are slightly convex to provide greater contact with rail 162 that is described in greater detail below.
- Upper tracks 64 and 65 define an "upper run" for rollers 72, while lower tracks 66 and 67 define a "lower run” for roller 72.
- each roller 72 is comprised of a roller body 74 that is generally cylindrical in shape. Bores 76 are formed in each end of roller body 74. Bores 76 are dimensioned to receive a roller bearing 78 therein.
- a shaft 82 is mounted within each roller bearing 78 and extends axially outward from the ends of roller body 74. Each shaft 82 has a track bearing 84 mounted thereon. Track bearing 84 is disposed on shaft 82 to rest upon the respective surfaces of upper and lower tracks 64, 65, 66 and 67.
- conveyor belts 92 are endless loops, having hubs 94 integrally formed thereon.
- Conveyor belts 92 are preferably formed of a flexible polymer material, such as nylon.
- a conveyor belt 92 is provided at each end of roller 72.
- Each conveyor belt 92 extends around a drive sprocket 96 and an idler sprocket 98.
- the inner surface of conveyor belt 92 includes splines adapted to interact with teeth on drive sprockets 96 and idler sprockets 98.
- Drive sprockets 96 are mounted onto a drive shaft 102 for simultaneous rotation by a drive motor 104.
- Drive motor 104 is fixedly mounted onto side plate 42.
- An idler shaft 106 connects the idler sprocket 98 of one conveyor belts 92 with the idler sprocket 98 of the other conveyor belt 92 for simultaneous rotation thereof.
- Drive motor 104 is preferably a stepping motor having control means (not shown) to control movement of conveyor belts 92 and rollers 72 in a predetermined sequence as shall be described in greater detail below.
- rollers 72 are mounted onto conveyor 92 to form a generally continuous roller bed 110 (i.e., a support bed comprised of adjacent rollers 72) and a gap or space 112 separating the distal ends of roller bed 110.
- a sensor 116 is located at the end of the "upper run” of belt 92, as best seen in FIGS. 1 and 2. Sensor 116 is positioned to sense the edge of a sheet S moving along the upper run of the path of rollers 72, as shall be described in greater detail below.
- a scanner 118 is mounted to frame assembly 40 and extends parallel to the axes of rollers 72. Scanner 118 is disposed above belt 92 and is disposed to be able to scan sheets moving along the upper run of belt 92.
- roller control assembly 120 is provided to interact with rollers 72 so as to control the rotation thereof.
- roller control assembly 120 is comprised of a movable brake device 130 and a stationary brake device 160.
- Movable brake device 130 is basically comprised of a flexible belt 132.
- Brake belt 132 is a generally continuous loop that is mounted around a drive sprocket 134 and an idler sprocket 136.
- Drive sprocket 134 and idler sprocket 136 include teeth that operatively interact with splines formed on brake belt 132.
- Drive sprocket 134 and idler sprocket 136 are mounted on the distal ends of an elongated beam 138 (best seen in FIG. 3).
- Drive sprocket 134 is mounted onto a drive shaft 142 that extends from a drive motor 144.
- Drive motor 144 is mounted on side plate 44 and is operable to controllably drive belt 132 about a path that is generally parallel to the path of conveyor belt 92.
- beam 138 and belt 132 are mounted to pivot about drive shaft 142.
- An actuator 152 is fixedly mounted to frame assembly 40 to reciprocally move the end of beam 138.
- actuator 152 is a cylinder (either pneumatic or hydraulic) that is attached at one end to beam 138 and at the other to frame assembly 40. Actuation of the cylinder is operable to move brake belt 132 between a first position shown in FIG. 1 wherein brake belt 132 is in contact with the surface of rollers 72, and a second position wherein brake belt 132 is away from, and not in contact, with rollers 72. As best seen in FIG. 2, brake belt 132 is disposed near side wall 44 and engages only one end of rollers 72, thereby leaving the space above the center portions of rollers 72 unobstructed.
- Stationary brake device 160 is generally comprised of an elongated rail 162 that extends along a major portion of the lower run.
- rail 162 has an L-shaped cross-section and is mounted to side plate 44 by conventional fasteners 68.
- a brake pad 164 formed of a tough, frictional material is disposed on the bottom surface of rail 162.
- Brake pad 164 is disposed to engage the upper surface of rollers 72 as they move along the lower path run.
- the leading edge 168 of rail 162 is contoured to engage rollers 72 as they move around idler sprocket 98.
- rail 162 is slightly concave to match the convex surface of lower track 66.
- STACKING ASSEMBLY Stacking assembly 180 is generally comprised of a stacking platform 182 supported by a movable support.
- stacking platform 182 is supported on a rod 184 that extends from a base 186.
- Stacking platform 182 is preferably operable to move downward a predetermined distance each time a sheet S is stacked thereon.
- stacking platform 182 may be supported by a compression spring (not shown), wherein stacking platform will lower as the weight thereon increases.
- rod 184 and base 186 may be comprised of a conventional hydraulic or pneumatic cylinder, or a mechanical screw device, that is operably controlled to lower stacking platform 182 after a predetermined number of sheets S have been stacked thereon.
- stacking platform 182 is disposed at one end of sheet stacking device 10 and is generally centrally located between side plates 42, 44 below rollers 172.
- FIGS. 4A through 4M the operation of sheet stacking device 10 shall be described.
- the components of stacking device 10 have been in some cases simplified and enlarged for the purposes of illustration and easier identification.
- the relative size of rollers 72 and movable brake device 130 have been enlarged for easier identification.
- the slightly convex shape of upper tracks 64 and 65 and lower tracks 66 and 67 are not shown. (As indicated above, the upper surface of tracks 64, 65, 66 and 67 may be flat without deviating from the present invention).
- movable brake device 130 is shown as being movable in its entirety relative to roller bed 110 rather than being pivotable about drive shaft 142, as in FIGS. 1-3. It will be appreciated by those skilled in the art that the simplification of the drawings shown in FIGS. 4A-4M are for the purposes of illustration only, and are not intended to suggest a structural change in the device heretofore described.
- roller bed 110 is shown in a preferred first position to receive a sheet S from sheet cutting device 20.
- movable brake device 130 In its initial operating position, movable brake device 130 is in its second position, wherein belt 132 is not in contact with rollers 72.
- a section of the generally continuous sheet material is fed onto the upper surface of rollers 72 by drive rollers 22. Since belt 132 does not engage rollers 72, rollers 72 are free to rotate about their respective axes.
- drive motor 104 causes drive sprocket 96 to rotate and move belt 92 in the direction shown. Since rollers 72 are free-wheeling, roller bed 110 may move to a predetermined position without exerting any influence on the sheet material.
- FIG. 4B shows roller bed 110 of stacking device 10 continuing to move in a counter-clockwise direction as the sheet material is being fed onto roller bed 110.
- movement of roller bed 110 ceases at a predetermined location.
- upper die 26 from cutting device 24 moves downward to shear sheets S from the generally continuous length of sheet material.
- movable brake 130 moves downward such that belt 132 engages the upper surface of rollers 72.
- belt 132 of movable brake 130 engages only one end of rollers 72 and does not come in contact with the sheet material resting thereon.
- drive motor 104 With a sheet S resting upon the surface of rollers 72, drive motor 104 is energized to cause roller bed 110 to move in a counter-clockwise direction along the upper path.
- motor 144 of movable brake device 130 causes belt 132 to move in a clockwise direction as shown in FIG. 4D.
- conveyor belt 92 and control belt 132 are timed to move at the same speed.
- rollers 72 move along the upper run in a "locked" position. In other words, each roller maintains a stationary position relative to its respective roller axis.
- sheet S moves along the upper run toward sensor 116 as best seen in FIGS. 4D and 4E.
- rollers 72 move around idler sprocket 98, onto the lower run, each individual roller moves away from engagement with belt 132 and comes into contact with stationary brake device 160. As the surface of rollers 72 come into contact with brake pad 164, (as illustrated in FIG. 3), rollers 72 begin to rotate in a counter-clockwise direction about their respective axes as illustrated in FIG. 4E. As roller bed 110 continues to move around idler sprocket 92 from the upper run to the lower run, sheet S is carried to a predetermined position relative to sensor 116.
- roller bed 110 As roller bed 110 continues to move from the upper run to the lower run, support for sheet S will begin to disappear as rollers 72 move from under sheet S as illustrated in FIGS. 4G and 4H. As support for sheet S on the upper run disappears, sheet S drops down onto the lower run where it comes in contact again with the upper surfaces of rollers 72. Because of the counter-clockwise rotation of rollers 72 along the lower run (imparted by stationary brake device 160), sheet S effectively remains stationary relative to the moving roller bed 110 as illustrated in FIGS. 4-J and 4-K. Eventually, as all of the rollers 72 forming roller bed 110 move from the upper run to the lower run, sheet S falls completely onto the lower run as shown in FIG. 4K.
- rollers 72 along the lower run effectively maintain sheet S stationary as roller bed 110 continues to move in a counter-clockwise direction along the lower run and back up onto the upper run.
- the counter-clockwise rotation of rollers 72 along the lower run maintains the sheet S in a position above stacking platform 182. As the rollers 72 move from under sheet S, sheet S drops onto stacking platform 182.
- stacking device 10 is preferably timed such that as one sheet S is dropping onto stacking platform 182, roller bed 110 is returning to its initial starting position and another length of the sheet material is being driven onto rollers 72 on the upper run by drive rollers 22.
- the present invention thus provides a sheet stacking device that conveys a sheet material to a first position along an upper run and thereafter maintains the sheet in this relative vertical position by controlling the direction of rotation of the individual rollers 72 as the roller bed 110 moves along a closed path. As a result of the rotation of the rollers, the sheet basically drops from the upper run onto the lower run as roller bed 1 10 moves from the upper run to the lower run.
- sheet S is dropped onto a stacking platform 182 as the rollers along the lower run move from under sheet S.
- sheet S is not pinched or squeezed between two surfaces, but merely rests upon the upper surfaces of rollers 72 and is conveyed by the rotation of such rollers from the upper run to the lower run to the stacking platform.
- minimal contact is exerted on sheet S as it is stacked.
- each sheet S is scanned for defects or imperfections by scanner 118 as it moves along the upper run of belt 92. If a defect or flaw is detected in the surface of a sheet S, such sheet S is diverted from the stacking operation.
- the defective sheet is diverted from the stacking process by conveying it off the upper run into a scrap bin 192.
- the defective sheet S is conveyed off of roller bed 110 by continuing to drive belt 132 when the defective sheet S reaches the sheet stacking position (shown in FIG. 4F).
- the control unit that controls the operation of sheet stacking device 10 can control motor 144 of movable brake device 130 to cause belt 132 to continue its clockwise rotation beyond the sheet stacking position. This prevents rotation of rollers 72 and causes the defective sheet to be conveyed into scrap bin 192. Roller bed 110 would then continue back to its initial sheet-receiving position to receive the next sheet S for stacking from sheet cutter 20, as illustrated in FIG. 5B.
- FIG. 6 a pair of stacking devices designated 10 and 10', illustrate another embodiment of the present invention.
- Sheet stacking device 10 is the same device as heretofore described.
- Sheet stacking device 10' may be the same (not shown) as sheet stacking device 10, or may be a shorter version of stacking device 10 adapted to stack sheets of a different size, as illustrated in FIG. 6.
- sheet stacking device 10' may be adapted to stack different size sheets than stacking device 10, as shown in FIG. 6.
- the size of rollers 72 and roller bed 110 may be modified and/or the timing of the operation of stacking device 10' may be adjusted to stack sheets of a different size.
- Such a dual stacking arrangement allows cutting device 20 to be used to cut sheets S of more than one size.
- sheets S to be stacked on stacking device 10' would be conveyed across stacking device 10 by controlling the operation of belt 132 of movable brake device 130, in a manner as previously described.
- a device 10 in accordance with the present invention lends itself to numerous modifications and arrangements for stacking a wide variety of sheet material in a number of different ways.
- FIG. 7 is a schematic block diagram of a control system for controlling a stacking device 10, as heretofore described.
- a central processor controls the operation of motors 104, 144 and actuator 152 based on feedback from motors 104, 144 (preferably stepper motors) and data received from sensor 116, scanner 118 and sheet cutting device 20.
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Abstract
Description
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Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/530,991 US6341698B1 (en) | 1999-09-03 | 1999-03-09 | Sheet stacking device |
PCT/US1999/020101 WO2001017697A1 (en) | 1999-09-03 | 1999-09-03 | Sheet stacking device |
AU61344/99A AU6134499A (en) | 1999-09-03 | 1999-09-03 | Sheet stacking device |
DE19983978T DE19983978B4 (en) | 1999-09-03 | 1999-09-03 | Sheet stacking device |
TW089100135A TW464634B (en) | 1999-09-03 | 2000-01-06 | Sheet stacking device |
MYPI20000236A MY138377A (en) | 1999-09-03 | 2000-01-25 | Sheet stacking device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US1999/020101 WO2001017697A1 (en) | 1999-09-03 | 1999-09-03 | Sheet stacking device |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001017697A1 true WO2001017697A1 (en) | 2001-03-15 |
Family
ID=22273515
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1999/020101 WO2001017697A1 (en) | 1999-09-03 | 1999-09-03 | Sheet stacking device |
Country Status (5)
Country | Link |
---|---|
AU (1) | AU6134499A (en) |
DE (1) | DE19983978B4 (en) |
MY (1) | MY138377A (en) |
TW (1) | TW464634B (en) |
WO (1) | WO2001017697A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI569052B (en) * | 2015-05-22 | 2017-02-01 | 住華科技股份有限公司 | Optical film collecting device and method of collecting optical film |
JP2019014572A (en) * | 2017-07-06 | 2019-01-31 | 日東電工株式会社 | Sheet recovery device, sheet transportation recovery system, and sheet recovery method |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3717249A (en) * | 1971-02-22 | 1973-02-20 | Moore Dry Kiln Co | Sorter and stacker for veneer sheet and strip material |
DD238929A1 (en) * | 1985-07-02 | 1986-09-10 | Hohenstein Vorrichtungsbau | DEVICE FOR GIVING PLATEBOARDS ON STACKAGE PALLETS |
US4856263A (en) * | 1987-06-15 | 1989-08-15 | Advanced Pulver Systems, Inc. | System for loading patterns of articles into containers |
US5284252A (en) * | 1991-11-13 | 1994-02-08 | United Parcel Service Of America, Inc. | Automatic rotary sorter |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2207620A1 (en) * | 1972-02-18 | 1973-09-13 | Roeder & Spengler Ohg | Stacking cut fabrics etc - conveyor carries lengths over stack, trailing length end dropped to stack edge, conveyor moves on |
-
1999
- 1999-09-03 AU AU61344/99A patent/AU6134499A/en not_active Abandoned
- 1999-09-03 WO PCT/US1999/020101 patent/WO2001017697A1/en active Application Filing
- 1999-09-03 DE DE19983978T patent/DE19983978B4/en not_active Expired - Lifetime
-
2000
- 2000-01-06 TW TW089100135A patent/TW464634B/en not_active IP Right Cessation
- 2000-01-25 MY MYPI20000236A patent/MY138377A/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3717249A (en) * | 1971-02-22 | 1973-02-20 | Moore Dry Kiln Co | Sorter and stacker for veneer sheet and strip material |
DD238929A1 (en) * | 1985-07-02 | 1986-09-10 | Hohenstein Vorrichtungsbau | DEVICE FOR GIVING PLATEBOARDS ON STACKAGE PALLETS |
US4856263A (en) * | 1987-06-15 | 1989-08-15 | Advanced Pulver Systems, Inc. | System for loading patterns of articles into containers |
US5284252A (en) * | 1991-11-13 | 1994-02-08 | United Parcel Service Of America, Inc. | Automatic rotary sorter |
Also Published As
Publication number | Publication date |
---|---|
TW464634B (en) | 2001-11-21 |
AU6134499A (en) | 2001-04-10 |
DE19983978B4 (en) | 2004-11-04 |
MY138377A (en) | 2009-05-29 |
DE19983978T1 (en) | 2002-10-10 |
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