摘要:
An automatic document conveying device comprises a document table on which documents are placed; a vacuum separating/feeding means for feeding the set documents placed on the document table; a set document stopper for positioning the front ends of the documents placed on the document table; and a discharged document stopper for restraining the movement of the document discharged onto the set documents after being fed by the vacuum feeding means and subjected to image processing. A first opening and a second opening are provided in the document table. The vacuum separating/feeding means is disposed below the first opening. A feed drum connected to the vacuum chamber of the vacuum separating/feeding means via an opening/closing means is disposed below the second opening.
摘要:
A device for transporting material, in the form of discrete sheets, seriatim to a stack of discrete sheets, and subsequently seriatim away from such stack. The discrete sheet material transport device comprises a support for a stack of discrete sheets. The stack support includes a first stop for a first marginal edge of a discrete sheet, and opposed second and third stops for opposed marginal edges of a discrete sheet perpendicular to the first marginal edge of such discrete sheet. Discrete sheets are delivered seriatim to the vicinity of the stack support and are urged in a first direction into engagement with the first stop to form a stack of discrete sheets on the stack support. The discrete sheets are subsequently urged seriatim in a direction opposite the first direction to remove discrete sheets seriatim from the stack on the stack support. The second and third stops are located to accurately position the stack of discrete sheets on the stack support. Further, the second and third stops are substantially simultaneously oscillated to maintain such stack in the accurate position as such discrete sheets are urged to and from the stack on the stack support.
摘要:
A feeder for feeding corrugated blanks in a box finishing machine including overlying and underlying endless timing belts sandwiching the blanks to feed them. The belts are spaced from each other to form a first gap at rectilinearly moving sections located between opposite end pulleys of the belts. The gap between the belts at the inlet and outlet pulleys is greater than the first gap whereby blanks are engaged and fed by the belt sections as they move rectilinearly between the opposite end pulleys. One of the belts is urged into yieldable engagement with the blank by a pressure mechanism including a floating pressure plate engaging the belt and a spring engaging the pressure plate. An extended stroke feeder is used to feed blanks to the endless belts at a constant velocity matched to the velocity of the belts.
摘要:
Pressurized air and vacuum levels are controlled to facilitate sheet separation and feeding reliability based on the weight of a document sheet stack on the document sheet stack support. The weight of the stack is determined by counting the total number of individual document sheets in such document sheet stack, determining the height of the original topmost document sheet of such stack at a particular point in time, counting the number of individual document sheets fed from such stack from such particular point in time, computing the weight of each individual document sheet based on the counted number of document sheets from such particular point in time, and calculating the total weight of such stack based on the weight of each individual document sheet and the total number of document sheets in the such stack.
摘要:
Settling of document sheets returned to the document sheet stack support in such support is facilitated by a flow of positive pressure air directed at document sheets travelling in the document sheet feed path downstream, in the direction of sheet travel from the fourth feed mechanism, and a flexible member, extending into the sheet feed path, located between the fourth feed mechanism and the air flow.
摘要:
Apparatus which takes stacks of pre-formed, stored printed signatures and forms them into a uniform shingle, running at extremely high velocity, for transport into a processing device such as a rotary trimmer or quarter folder. The apparatus, in certain major aspects, includes an input conveyor and a support table creating a vertical queue stack of signatures which is maintained at very low but essentially constant weight and height by photocell control of the speed of a conveyor which adds signatures to the top of the stack, a conveyor belt running beneath the bottom of the stack in a cut-out region of the stack-supporting table, with sequential vacuum clutching to the tail portions of successive signatures caused by spaced rows of holes extending across that belt and registerable with longitudinal slots in a vacuum shoe beneath the belt. As each row of holes reaches and runs along the slots, vacuum action clutches successive signatures to the belt, and the signatures are pushed at a constant rate seriatim from the bottom of the stack to exit in overlapped, shingled relation through a gate. The shingle setback is determined by the spacing between rows of holes in the belt, and the velocity of the exiting shingle may be varied by changing the belt drive speed without affecting the shingle setback.
摘要:
A document handler employing a vacuum belt feeder having an air knife to aid in sheet separation. The quantity of air discharged from the air knife is varied in accordance with the number of documents placed in the document handler as determined by counting the documents fed through the document handler during the initial feed cycle and actuating a valve having four flow settings: Off, Low, Medium, and High.
摘要:
A loader for feeding signatures into a generally vertically extending pocket in which the signatures are supported on a folded edge and from which signatures are fed by a feed mechanism, such as through a signature inserter, to a saddle of a saddle gathering machine, wherein a generally horizontally oriented hopper is located between a first feeding mechanism from a supply station and a second feeding mechanism to the pocket, a quickly detachable coupling arrangement is provided for forming the pocket with the loader, and the second feeding mechanism includes an adjustably mounted vacuum manifold and perforated stripper belts for moving signatures in a shingled stream into said pocket.
摘要:
A sheet feeder employing a vacuum feed belt in conjunction with a vacuum control plenum immediately adjacent the downstream edge of the vacuum belt, a self actuating valve being provided to shut off the vacuum supply to the feed belt when the sheet being fed blocks the openings in the control plenum to prevent acquisition of a second sheet by the feed belt until the trailing edge of the sheet being fed clears the control plenum.
摘要:
An automatic document handler adapted to receive a stack of documents to be copied for feeding the documents seriatum to the platen of a copy machine and returning the copied documents to the stack. The combination of a vacuum-belt document corrugator/feed assembly and an air knife is provided to assure positive feeding of each document to the platen without misfeeds or multifeeds.