Apparatus, system and method for cutting and creasing media
10245803 ยท 2019-04-02
Assignee
Inventors
- Robert A. Clark (Williamson, NY, US)
- William J. Nowak (Webster, NY, US)
- William J. Hannaway (Webster, NY, US)
Cpc classification
B26D5/32
PERFORMING OPERATIONS; TRANSPORTING
B26D7/27
PERFORMING OPERATIONS; TRANSPORTING
B31F7/00
PERFORMING OPERATIONS; TRANSPORTING
International classification
B31F7/00
PERFORMING OPERATIONS; TRANSPORTING
B26D7/27
PERFORMING OPERATIONS; TRANSPORTING
B26D5/08
PERFORMING OPERATIONS; TRANSPORTING
Abstract
An apparatus is disclosed that includes a computer operated cutting and creasing tool configured to move only in an X direction during use, a cutting and creasing platform having an elastically deformable creasing portion configured to support a sheet of media during contact with a creasing tip and a non-deformable cutting portion configured to support the sheet during contact with a cutting blade, and a positioner configured to draw the sheet of media along the cutting and creasing platform during cutting and creasing. Methods of making and using the apparatus also are disclosed.
Claims
1. An apparatus comprising: a cutting and creasing tool configured to move in an X direction but not in a Y direction during use, the cutting and creasing tool including a cut-crease head comprising a non-rotatable cutting blade with a cutting edge and a terminal end, the cutting blade being moveable between an engaged position in which the terminal end is below a sheet of media and a non-engaged position in which the terminal end is above the sheet of media, and a non-rotatable creasing tip spaced from the cutting blade, the cut-crease head being configured to support only one cutting blade and only one creasing tip during use, a cutting and creasing platform having a generally planar upper surface configured to support the sheet of media during cutting and creasing, the platform including an elastically deformable creasing portion disposed beneath the creasing tip, and a non-deformable cutting portion disposed adjacent to the creasing portion and beneath the cutting blade, the cutting portion having an elongated channel formed therein to receive the cutting blade when the cutting blade is in the engaged position, a positioner configured to draw the sheet of media along the cutting and creasing platform in a Y-direction while shifting the sheet back and forth along the Y-direction in response to at least one of a cutting order and a creasing order, and a computerized processor configured to operate the cutting and creasing tool and the positioner.
2. The apparatus of claim 1, further including an automatic media feeder configured to automatically feed sheets of media onto and off of the cutting and creasing platform.
3. The apparatus of claim 1, wherein the cutting blade and creasing tip are operated using solenoids.
4. The apparatus of claim 1, wherein the creasing portion has a Shore A hardness in the range of 40-90.
5. The apparatus of claim 1, wherein the creasing portion is upstream from the cutting portion.
6. The apparatus of claim 1, wherein the cutting portion of the cutting and creasing platform has a plurality of elongated channels formed therein.
7. The apparatus of claim 1, wherein the cutting portion comprises metal.
8. The apparatus of claim 1, wherein the cutting portion includes a removable segment comprising a plurality of walls defining the channel portion.
9. The apparatus of claim 1, wherein the creasing portion of the cutting and creasing platform comprises a thermoplastic or thermoset material.
10. The apparatus of claim 1, further comprising a sensor configured to read data on the sheet of media comprising instructions for at least one of cutting and creasing.
11. A system comprising: a cutting and creasing tool configured to move in an X direction but not in a Y direction during use, the cutting and creasing tool including a cut-crease head comprising a non-rotatable cutting blade with a cutting edge and a terminal end, the cutting blade being moveable between an engaged position in which the terminal end is below a sheet of media and a non-engaged position in which the terminal end is above the sheet of media, and a non-rotatable creasing tip spaced from the cutting blade, a cutting and creasing platform having a generally planar upper surface configured to support the sheet of media during cutting and creasing, the platform including an elastically deformable creasing portion disposed beneath the creasing tip, and a non-deformable cutting portion disposed adjacent to the creasing portion and beneath the cutting blade, the cutting portion having an elongated channel formed therein to receive the cutting blade when the cutting blade is in the engaged position, a positioner configured to draw the sheet of media along the cutting and creasing platform in a Y-direction while shifting the sheet back and forth along the Y-direction in response to at least one of a cutting order and a creasing order, a sensor configured to read data on the sheet of media comprising instructions for at least one of cutting and creasing, a computerized processor configured to operate the cutting and creasing tool, the sensor and the positioner, a first feeder disposed adjacent to or connected to the cutting and creasing platform, the first feeder being configured to automatically transport individual sheets of media from an in-feed receptacle toward the cutting and creasing platform using a first feed device, and a second feeder disposed adjacent to or connected to the cutting and creasing platform, the second feeder being configured to automatically transport individual sheets of media from the cutting and creasing platform to an out-feed receptacle after at least one of cutting and creasing.
12. The system of claim 11, wherein the creasing portion is upstream from the cutting portion.
13. The system of claim 11, wherein the cutting portion includes a removable segment comprising a plurality of walls defining the channel portion.
14. A method of making a media converter, comprising: forming a cutting and creasing tool configured to move in an X direction but not in a Y direction during use, the cutting and creasing tool including a cut-crease head comprising a non-rotatable cutting blade with a cutting edge and a terminal end, the cutting blade being moveable between an engaged position in which the terminal end is below a sheet of media and a non-engaged position in which the terminal end is above the sheet of media, a non-rotatable creasing tip spaced from the cutting blade, and a sensor configured to read data on a sheet of media comprising instructions for at least one of cutting and creasing, forming a cutting and creasing platform having a generally planar upper surface configured to support the sheet of media during cutting and creasing, the platform including an elastically deformable creasing portion disposed beneath the creasing tip, and a non-deformable cutting portion disposed adjacent to the creasing portion and beneath the cutting blade, the cutting portion having an elongated channel formed therein to receive the cutting blade when the cutting blade is in the engaged position, mounting the cutting and creasing tool above the cutting and creasing platform, forming a positioner configured to draw the sheet of media along the cutting and creasing platform in a Y-direction while shifting the sheet back and forth along the Y-direction in response to at least one of a cutting order and a creasing order, and forming a computerized processor to operate the cutting and creasing tool and the positioner.
15. The method of claim 14, further comprising: forming an automatic first feeder that includes a first feed device to place the sheet of media on the cutting and creasing platform, and forming an automatic second feeder that includes a second feed device to automatically remove the sheet of media from the cutting and creasing platform after cutting and creasing using a second feeder.
16. The method of claim 14, wherein the positioner and the automatic second feeder both use a first roller nip to move the sheet of media in the Y direction.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
DETAILED DESCRIPTION
(15) As used herein, cutting platform refers to the horizontal, inclined, flat or non-flat surface in the cutting and creasing device where the media is positioned during cutting. Creasing platform refers to the horizontal, inclined, flat or non-flat surface in the cutting and creasing device where the media is positioned during creasing. Cutting and creasing platform refers to a dual hardness working surface for performing cutting and creasing in the device. Non-deformable portion refers to a portion of the platform than cannot be elastically or inelastically deformed by pressure applied by a tool in a media cutting and creasing device. Elastically deformable portion refers to a portion of the platform that can be elastically deformed by pressure applied by a creasing tool in a media cutting and creasing device. A media converter as used herein is a device that can be used to cut and crease media.
(16) Dimensional document refers to a three-dimensional object formed by cutting and folding a flat sheet of media. In most cases, the dimensional document has printed matter, such as text and images disposed on the surface thereof (or in some cases has a uniform pigmented or dyed color). Media refer to any sheet-shaped stock, such as paper, cardboard, paper board, vinyl, labels, polyester, etc. that may be formed into a dimensional document. Cut means to cut and/or score. A cutting and creasing device is a device used to digitally cut and crease media. Crease means to impart a crease without cutting the media. A feeder as used herein refers to an apparatus that feeds media. Feed device as used herein refers to a feed roll or rolls, or a vacuum feed device. Retard feed technology refers to various techniques for accurately separating and feeding sheets using a feed roll and a retard roll or pad. Vacuum feed technology refers to various techniques for moving a sheet through a feed path using a vacuum.
(17) The embodiments described herein include an automatic feed media cutting and creasing device that will enable profitable production of small volumes of media structures, including dimensional documents such as boxes. Typically, boxes are cut from sheets using relatively expensive die-cutting equipment. This cost inhibits the ability to accommodate small orders. In contrast, the system described herein uses a cutting and creasing device having a design that is similar to pen plotters that were in wide use in the 1980s, except that the cutting-creasing plotters use cutting blades and creasing tips instead of pens. This type of cutting-creasing plotter typically uses a knurled or partially knurled shaft and idlers to maintain control of the sheet and move the sheet back and forth in the process direction, referred to herein as a Y-direction, during a cut-crease job. The other axis is accommodated via a belt or cable driven carriage upon which a blade and tip assembly is mounted. In embodiments, the blade-tip assembly includes a solenoid-based mechanism that lowers the cutting blade or creasing tip against the sheet when a cut or crease is to be made. In embodiments, a return spring lifts the blade away from the sheet once the solenoid is de-energized. The control of both axes and the solenoid can be dictated by a cut-crease file which is generated by a computer application and downloaded to the cutting and creasing device.
(18) One embodiment described herein is a media converter which includes a cutting surface or platform that combines a hard, channeled section for cutting, and an elastically deformable creasing surface or platform that is sufficiently compliant for creasing. In embodiments, the two surfaces are placed side-by-side, and are used in conjunction with a cutting and creasing device that includes separate cutting and creasing tools. This arrangement provides for both cutting and creasing on an X-theta cutter at a significantly lower cost than if an X-Y cutting table were used.
(19) Referring to
(20) Referring more specifically to the drawings,
(21) A dual surface cutting and creasing platform 34, shown in
(22) The channel 38 in the rigid portion 36 of the platform 34 is sized and configured to receive a portion of the cutting blade 22 when the cutting blade 22 engages a sheet of media and the blade 22 traverses along the length of walls 43, 45 and 47 of the channel 38. The cutting and creasing platform is stationary and the cutting blade 22 and creasing tip 26 move relative to the channel 38 in the plan of the sheet of media. The rigid portion 36 can include multiple cutting channels, either aligned next to one another in a generally parallel arrangement, or aligned in an alternating configuration with an elastically deformable portions disposed between adjacent grooves. The channel can have any suitable shape, and typically has a rectangular-shaped, V-shaped, or hybrid V-and-rectangular-shaped cross section. Non-limiting examples of suitable configurations of channel shape are shown in co-pending application Ser. No. 13/443,978 filed Apr. 11, 2012, the contents of which are incorporated herein by reference in their entirety.
(23) In the embodiment shown in
(24) In the embodiment of
(25) In the embodiment of
(26) In the embodiment of
(27) In embodiments, the elastically deformable portion is downstream from the rigid portion. This configuration can be used when the sheets are sufficiently stiff so as to avoid out-of-plane buckling of the sheet.
(28) The rigid portion 36 of the cutting and creasing platform 34 typically is made of a hard material, such as metal, including without limitation aluminum and steel, which can be coated with a non-stick material, such as ptfe or the like, or is made of a hard thermoplastic or thermoset material, or a composite of a metal and a thermoplastic or thermoset material. In embodiments, the dimensions of the cutting portion of the cutting platform are 0.5 cm-2 cm, or about 1 cm in width and 40-55 cm, or about 48 cm in length.
(29) The elastically deformable portion 40 of the platform 34 typically is made of an elastically deformable thermoplastic or thermoset material, such as polyurethane, polyolefin, rubber or epoxy, or the like. The type of media to be cut can be paper, plastic, textile or rubber, but usually is paper or plastic.
(30) One suitable type of configuration for operating the cutting and creasing tools is shown in
(31) In an alternative embodiment, shown in
(32) In embodiments, the cutting and creasing device is incorporated into an X-theta cutting and creasing device with automatic in-feed and out-feed. The cutting and creasing device 10 comprises a chassis, a motor and the carriage operably secured to the chassis and driven by the motor for reciprocal movement relative to the chassis. As indicated above, typically, the cut-crease head 14 traverses in an X-direction via a capstan drive. Movement of a sheet of media in the process direction, i.e. the Y-direction, is enabled by moving the media via a drive roll. The cutting plate has at least one channel providing clearance for the blade as it is lowered to cut media.
(33) To operate the cutting and creasing device, when a cut is to be made, the capstan and media drive work together to locate the cutting tool at the start point, at which time the cutting tool solenoid is energized and the cutting tool is pressed down against the media (usually into a channel 38). The media is then cut according to the previously programmed path. The sheet of media is moved back and forth in the Y direction during cutting using the drive roll. At the end of the cutting operation, the solenoid is de-energized and a return spring (not shown) retracts the tool from the media.
(34) When a crease is to be made, as indicated above, the process is similar except that it is the creasing tool that is pressed against the media by energizing the solenoid attached to the creasing tool. The media deforms into the compliant section, and a crease is made as both the creasing head and media move along a previously programmed path. At the end of the crease, the solenoid is de-energized and a return spring (not shown) retracts the tool from the media.
(35) The primary difference between the cutting blade 22 and the creasing tip 26 is the sharpness In embodiments, the cutting blade has a sharpened edge, while the creasing tool has a ball-point tip. The creasing tip usually requires a substantially higher applied force than the cutting blade in order to plastically deform (i.e. crease) the sheet.
(36)
(37) The embodiment shown in
(38)
(39)
(40) The retard roll 151 includes a cylindrical section 152 that is supported for rotation on a shaft 153. The retard roll facilitates separation of double fed sheets. The details of the slip clutch technology used to separate double fed sheets are described in U.S. Pat. No. 5,435,538.
(41) The drive roll 131 and retard roll 151 rotate to move a sheet of media forward through the cutting and creasing device 110 and onto the cutting and creasing platform 134. The cutting and creasing system 110 includes a pair of cutter rolls 139, 141, defining a nip 186 configured to move a sheet 193 of media backward and forward on the cutting and creasing platform 134. More specifically, in embodiments, the sheet 193 is moved though the cutter 116 by the drive roll 131 and retard roll 151 until the leading edge portion of the sheet is picked up by the cutter nip 186. After the leading edge portion 195 of the sheet 193 is disposed between the cutter rolls 139, 141, the trailing edge 194 of the sheet 193 passes out of the retard feed assembly 135. At this point, the trailing edge 194 of the sheet 193 falls downward onto the extension platform 143 that extends upstream from the cutting and creasing platform 134. The sheet 193 continues to be moved along inside the cutting and creasing device 110 using the cutter rolls 139, 141. Once disposed horizontally on the cutting and creasing platform 134, the sheet 193 is registered, cut and/or creased with a digital cutting and creasing device 114 and ejected. Further details of automatic feed devices are provided in U.S. application Ser. No. 13/439,369 filed Apr. 4, 2012, the contents of which are incorporated herein in their entirety.
(42) In the embodiment shown in
(43) The embodiments of
(44) The flowcharts shown in
(45) More particularly, as is shown in
(46) If the travel direction of the sheet has been reversed at 322, the sheet travels in the reverse direction until it is properly aligned, according to sheet edge detection via the second sensor. At this point, the cutter nip stops at 326. If an identification code was found to be present, shown at 328, the (previously read) identification code information from the media is used by the controller to determine the proper cutting program to use. (If no identification code was found, the uncut sheet is ejected at 338 into the output receptacle by rotation of the cutter nip in a forward direction.) The controller sends a signal to the cutter as to which cutting and creasing program is to be used to cut and/or crease the media, and the appropriate sheet registration algorithm is activated at 330. After the registration marks are found at 332, the media is digitally cut at 334. (If there is a problem finding the registration marks, a misalignment problem probably occurred and the sheet is ejected at 338.) Once cutting is finished, the cutting tool is retracted and, if creasing is required, the creasing tool is activated and the media is digitally creased at 335. The creasing tool is retracted when creasing is completed.
(47) Once cutting and creasing are finished, the cutter nips are activated at 338 to eject the cut sheet. This action by the cutter nips can be effected, for example, by programming the cutter controller to utilize the cutter nip to feed the cut and/or creased media to the out-feed receptacle. After ejection, the cutter nip can be turned off at 340. A determination is made at 342 as to whether there are more sheets in the job. If so, the process returns to 316. If not, the job ends at 344.
(48) In one variation of the process shown in
(49) For partially manual operation of the system, as is shown in
(50) After the travel direction of the sheet is reversed at 422, the sheet travels in the reverse direction until it is properly aligned, according to sheet edge detection via the second sensor. At this point, the cutter nip stops at 426. The appropriate sheet registration algorithm is activated at 430 based on the cutting program that was selected at 411. After the registration marks are found at 432, the media is digitally cut at 434. If there is a problem finding the registration marks, a misalignment problem probably occurred and the sheet is ejected at 438.
(51) Once cutting is finished, the cutting blade is retracted and the media is digitally creased at 435, if creasing is required. After creasing is finished, the creasing tool is retracted and the cutter nips are activated at 438 to eject the cut sheet. After ejection, the cutter nip can be turned off at 440. A determination is made at 442 as to whether there are more sheets in the job. If so, the process returns to 416. If not, the job ends at 444.
(52) In one variation of the process shown in
(53)
(54) A non-limiting example of feed technology that can be adapted for use with this system is Xerox retard feed technology, which can be incorporated into an adapted version of a by-pass feeder used in a multifunction printing device.
(55) Typical systems occupy a floor footprint in the range of 8-25 square feet, or 10-18 square feet, or 10-15 square feet, enabling the system to be used in small print shops. The volume occupied by the system typically is in the range of 20-100 cubic feet, or 20-60 cubic feet, or 20-40 cubic feet.
(56) As indicated above, the system enables a print shop to produce low cost dimensional documents for low volume print jobs in an economically competitive manner. The system and method are particularly well suited for use in low volume and short run packaging applications ranging from 2 to 500 pieces. Print jobs in the range of 1-500, or 1-250 or 1-100 are well suited for cutting using the system and method described. The embodiments shown in
(57) It will be appreciated that the above-disclosed and other features and functions, or alternatives thereof, may be desirably combined into many other different systems or applications. Various presently unforeseen or unanticipated alternatives, modifications, variations, or improvements therein may be subsequently made by those skilled in the art, which are also intended to be encompassed by the following claims. Unless specifically defined in a specific claim itself, steps or components of the invention should not be implied or imported from any above example as limitations to any particular order, number, position, size, shape, angle, color, or material.