1. Field of the Invention
The present invention generally relates to the handling of sheet material and, more particularly, to a pivoting collecting device for handling folded sheet material.
2. Background Information
A system for finishing printed sheets into booklets is described in U.S. Pat. No. 6,099,225 (Allen et al.), hereby incorporated by reference in its entirety, where most finishing operations are performed on a sheet-by-sheet basis using precise paper positioning. The Allen patent discloses an inverted V-shaped workpiece for collecting folded booklet sheets.
Another system for making booklets on a sheetwise basis is disclosed in PCT Document No. WO 00/18583 (Trovinger et al.), hereby incorporated by reference in its entirety. In the Trovinger PCT, individual folded booklet sheets are forwarded from a folding device to a linearly translating saddle, the reciprocation of which permits a trailing side of a folded sheet to be transported onto the backside of the saddle.
The present invention is directed to a pivotable collecting device for handling a folded sheet material.
According to an exemplary embodiment of the present invention, a pivotable collecting device for handling a folded sheet material is provided, including a supporting edge for supporting a fold of the folded sheet material, two supporting sides opposing one another, and means for pivoting the supporting edge and supporting sides about a first axis to receive the folded sheet material such that each supporting side receives a different portion of the folded sheet material, where the supporting sides converge at the supporting edge, and where the first axis is parallel to a longitudinal axis of the supporting edge.
According to another embodiment of the present invention, a method for transferring folded sheet material is provided, including the steps of receiving a first portion of the folded sheet material on a first supporting side of a collecting device, supporting a fold of the folded sheet material on a supporting edge of the collecting device, and pivoting the pivotable collecting device in a first direction such that a second supporting side of the pivotable collecting device receives a second portion of the folded sheet material, where the first and second supporting sides are opposing sides of the collecting device.
According to another embodiment of the present invention, a pivotable collecting device for handling a folded sheet material is provided, including a supporting edge for supporting a fold of the folded sheet material, two supporting sides opposing one another, and means for pivoting the supporting edge and supporting sides about a first axis to receive the folded sheet material such that each supporting side receives a different portion of the folded sheet material, where the supporting sides converge at the supporting edge, and where the first axis is parallel to a longitudinal axis of the supporting edge.
Other objects and advantages of the present invention will become more apparent from the following detailed description of preferred embodiments, when read in conjunction with the accompanying drawings wherein like elements have been represented by like reference numerals and wherein:
A pivotable collecting device is represented in
An exemplary embodiment includes two supporting sides (e.g., first and second supporting sides 146 and 148) opposing one another. For example, first and second supporting sides 146 and 148 are positioned on opposite sides of pivotable collecting device 102 and are substantially parallel to one another (with the exception of portions 146 and 148 that converge at supporting edge 112). However, alternatively, first and second supporting sides 146 and 148 can be arranged such that an obtuse or acute angle exists between them, and such an arrangement would remain within the definition of the term “opposing” in the context of the present invention. For example, in exemplary
Pivotable collecting device 102 is shown to be in an upright position in
In an exemplary embodiment, a means (e.g., drive means 142) is provided for pivoting the supporting edge and supporting sides about a first axis (e.g., axis 116) to receive the folded sheet material such that each supporting side receives a different portion of the folded sheet material. For example, pivotable collecting device 102 pivots about axis 116 to receive folded sheet material 110, where such movement is achieved with the use of drive means 142, which pivots pivotable collecting device 102 toward or away from a processing device (e.g., one of processing devices 234–240 in
Drive means 142 includes a motor 126 and a rotatable shaft 144 attached to pivotable collecting device 102, whereby rotation of shaft 144 by motor 126 results in a pivoting of pivotable collecting device 102 about axis 116. Motor 126 is mounted to a support 104 and can be of any type (such as electric, pneumatic, or hydraulic). Also, pivotable collecting device 102 can be rotated by motor 126 via alternative power transmitting means, such as a chain, belt, and/or gear system. Further, drive means 142 can, alternatively, be any means for actuating, such as a piston.
A collecting drive (e.g., collecting drive 118) is provided in an exemplary embodiment for clamping the folded sheet material against at least one of the supporting sides and/or advancing the folded sheet material along the at least one supporting side. For example, in
In an exemplary embodiment, collecting drive 118 pivots based on a pivoting movement of pivotable collecting device 102. For example, shaft 168 is rotatably mounted on arms 158, at least one of which is shaped such that shaft 168 and tires 164 rotate about axis 120 when the arm 158 contacts a redirection area 160 on support 104. For example, an exemplary arm 158 is angled in such a way that when pivotable collecting device 102 moves into an upright position (shown in
Using these components, exemplary collecting drive 118 can be used to clamp folded sheet material against first supporting side 146 and to advance folded sheet material along first supporting side 146 (e.g., in the +y or −y direction when pivotable collecting device 102 is in an upright position). Clamping of folded sheet material by collecting drive 118 is achieved by movement of arms 158 due to the force of biasing members 172 and the absence of contact between arm 158 and redirection area 160 (as shown in
Once folded sheet material is clamped against first supporting side 146, advancement of folded sheet material is achieved by rotation of shaft 168 and tires 164, which is controlled by a drive means 170. Drive means 170 can rotate shaft 168 independently of the rotation of arms 158. Also, drive means 170 can be any means for driving known in the art, and can include, for example, any type of motor and power transmitting means known in the art, as described above with respect to drive means 142.
An exemplary embodiment also includes a means for aligning the folded sheet material, such as aligning means 174, which includes jogging fingers 124 and motor 176 in the
Also provided in an exemplary embodiment is a means for staple clinching, such as staple clinching means 128, which includes clinch plates 182, push rods 184, and clinch cams 186 arranged on shaft 144. Alternatively, clinch cams 186 can be arranged on a shaft separate from shaft 144. Clinching means 128 can operate as active clinch units described in co-pending U.S. Patent Application entitled “STAPLING APPARATUS FOR A BOOKLET MAKER” filed Mar. 30, 2001), the disclosure of which is hereby incorporated by reference in its entirety. Alternatively, clinching means 128 can be any means known in the art for clinching staples.
The exemplary pivotable collecting device also includes an ejecting member, such as ejecting member 130, for ejecting the folded sheet material from the pivotable collecting device. Ejecting member 130 can be positioned within or externally from pivotable collecting device 102, and can be shaped as a thin flat plate with enough structural length along the x-axis to lift folded sheet material away from supporting edge 112 when actuated by a motor 188 via connector 190. If positioned within pivotable collecting device 102, ejecting member 130 can protrude (when actuated) through a slit in supporting edge 114. Alternatively, ejecting member 130 can be arranged and actuated by any means for ejecting.
In the
Also provided in collecting apparatus 300 is a deflector 392, which can be fixedly mounted on either shaft 368 or arms 358; in this way, deflector 392 rotates along with shaft 368, as shown in
Also, as shown in
With reference to
A system for handling sheet material is represented in exemplary
System 266 also includes a transferring device 250, which can be arranged and used as the clamping drive described in co-pending U.S. patent application Ser. No. 09/820,740, entitled “APPARATUS FOR ADVANCEMENT OF PAPER IN A NON-LINEAR PATH”, the disclosure of which is hereby incorporated by reference in its entirety. Transferring device 250 can also be arranged and used as the clamping drive described in co-pending U.S. patent application Ser. No. 10/084,459 entitled “SYSTEM FOR HANDLING FOLDED SHEET MATERIAL” (attorney docket no. 10015158, filed on even date), the disclosure of which is hereby incorporated by reference in its entirety. For example, transferring device 250 can be used to secure stacked folded sheet material to pivotable collecting device 202 during a stapling operation. Alternatively, transferring device 250 can be any means for transferring sheet material.
Also provided in system 266 is a stapling device 252, which can be arranged as the stapling apparatus described in co-pending U.S. patent application Ser. No. 09/820,743, entitled “STAPLING APPARATUS FOR A BOOKLET MAKER”, the disclosure of which is hereby incorporated by reference in its entirety. Alternatively, stapling device 252 can be arranged as any means for stapling.
Attached or integral to support 204 is a stop 256, which may be made of the same or a different material of support 204. As shown in
With reference to
A method for transferring folded sheet material is provided, including a step of receiving a first portion of the folded sheet material (e.g., first portion 206 of folded sheet material 210 in
In the
To aid in this transfer, a step of deflecting (e.g., with deflector 492 in
Also provided is a step of pivoting the pivotable collecting device (e.g., pivotable collecting device 202 or pivotable collecting device 402) in a first direction such that a second supporting side of the pivotable collecting device receives a second portion of the folded sheet material, and a step of clamping the first portion of the folded sheet material against the first supporting side of the pivotable collecting device. In the
A step of advancing the first portion of the folded sheet material along the first supporting side of the pivotable collecting device is also provided in an exemplary embodiment. For example, tires 264 are rotated to advance first portion 206 along first supporting side 246 until fold 214 is received and supported on supporting edge 212. This operation properly positions sheet material 210 onto pivotable collecting device 202 and also helps to transfer sheet material 210 out of an upstream processing device (e.g., folding device 234). Any means for sensor can be used to detect the receiving of fold 214 on supporting edge 212, such as optical or weight-sensitive sensors. An advancement of folded sheet material 210 can occur before, during, or after a pivoting of pivotable collecting device 202 away from folding device 234.
In
Once first portion 406 is clamped to first supporting side 446, tires 464 can be rotated to advance first portion 406 along first supporting side 446 until fold 414 is received by supporting edge 412. Any means for sensing can be used to detect the receiving of fold 414 on supporting edge 412, such as optical or weight-sensitive sensors. An advancement of first portion 406 can occur before, during, or after a pivoting of pivotable collecting device 402 away from folding device 434.
In the
Also provided in an exemplary embodiment is a step of locking the pivotable collecting device (e.g., pivotable collecting device 502 in
Exemplary embodiments of the present invention can be modified to include features from any or all of the following copending applications, all filed on even date herewith, the disclosures of which are hereby incorporated by reference in their entirety: U.S. patent application Ser. No. 10/084,459, entitled “System for Handling Folded Sheet Material”, (Trovinger, S.) and U.S. patent application No. 10/084,460, entitled “Booklet Maker”, (Trovinger, S.).
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