Abstract: A method and apparatus for wrapping a folio ream. The method includes pre-creasing a wrap sheet and driving the ream into the wrap sheet toward a fold position. A bubble of wrap is formed in the wrap sheet, which is cut while the ream advances, such that a lower flap of the wrap sheet extends beyond the rear edge of the ream. An upper flap fold is formed on the rear edge of the ream, and glue is applied to the lower flap as it is held flat via a vacuum. The lower flap of the wrap sheet is then folded in an upward direction, while the vacuum simultaneously applies a force to an opposite side of the lower flap to keep it flat during folding. The ream is reversed to compress the glue between the lower and upper flaps, forming a rear edge seam on the folio ream.

Abstract: A method and apparatus for wrapping a folio ream. The method comprises pre-creasing a wrap sheet and driving the ream into the wrap sheet toward a fold position. A bubble of wrap is formed in the wrap sheet, which is cut while the ream advances, such that a lower flap of the wrap sheet extends beyond the rear edge of the ream. An upper flap fold is formed on the rear edge of the ream, and glue is applied to the lower flap as it is held flat via a vacuum. The lower flap of the wrap sheet is then folded in an upward direction, while the vacuum simultaneously applies a force to an opposite side of the lower flap to keep it flat during folding. The ream is reversed to compress the glue between the lower and upper flaps, forming a rear edge seam on the folio ream.

Abstract: A method and apparatus for wrapping a folio ream. The method comprises pre-creasing a wrap sheet and driving the ream into the wrap sheet toward a fold position. A bubble of wrap is formed in the wrap sheet, which is cut while the ream advances, such that a lower flap of the wrap sheet extends beyond the rear edge of the ream. An upper flap fold is formed on the rear edge of the ream, and glue is applied to the lower flap as it is held flat via a vacuum. The lower flap of the wrap sheet is then folded in an upward direction, while the vacuum simultaneously applies a force to an opposite side of the lower flap to keep it flat during folding. The ream is reversed to compress the glue between the lower and upper flaps, forming a rear edge seam on the folio ream.

Abstract: A conveyor device, in particular for an automatic packaging machine for paper rolls, having a horizontal plane of advance, at least one pair of motorized flexible transmission members extending along a closed loop and bearing a plurality of transverse bars fastened to said flexible transmission members, a plurality of thruster elements borne by said bars, and a stationary adjustment station provided with at least one adjustment assembly having a grip organ movable in transverse direction and arranged in such a way as to displace in the transverse direction along the respective bar a thruster element positioned at the grip organ.

Abstract: A conveyor device, in particular for an automatic packaging machine for paper rolls, having a horizontal plane of advance, at least one pair of motorized flexible transmission members extending along a closed loop and bearing a plurality of transverse bars fastened to said flexible transmission members, a plurality of thruster elements borne by said bars, and a stationary adjustment station provided with at least one adjustment assembly having a grip organ movable in transverse direction and arranged in such a way as to displace in the transverse direction along the respective bar a thruster element positioned at the grip organ.

Abstract: A conveyor device, in particular for an automatic packaging machine for paper rolls, having a horizontal plane of advance, at least one pair of motorised flexible transmission members extending along a closed loop and bearing a plurality of transverse bars fastened to said flexible transmission members, a plurality of thruster elements borne by said bars, and a stationary adjustment station provided with at least one adjustment assembly having a grip organ movable in transverse direction and arranged in such a way as to displace in the transverse direction along the respective bar a thruster element positioned at the grip organ.

Abstract: The formation of a group (2) of rolls (3) of paper arranged according to a first number (h) of overlaid layers (4) is performed by feeding the layers (4) onto an elevator platform (8) by means of at least two feed conveyors (11) positioned one on top of the other; the method providing for initial loading onto the platform (8) of a number of layers (4) at the most equal to the number of feed conveyors (11), lowering of the platform (8) by a distance equal or slightly greater than the height of the layers (4) just loaded and, lastly, loading onto the platform (8) and onto the layers (4) already loaded of a number of layers (4) at the most equal to the number of feed conveyors (11).

Abstract: The wrapping of groups of products positioned according to a determined number of mutually superposed layers is achieved by feeding in succession groups of products firstly into a tubular case made to heat-sealable material and, then, to a first wrapping device when the number of layers is equal to one and to a second wrapping device when the number of layers is at least equal to two; the two wrapping devices being able to wrap each group inside a related wrapping sheet, which is folded substantially in contact with the related group, and which is stabilized by means of sealing operations.

Abstract: A conveyor device, in particular for an automatic packaging machine for paper rolls, having a horizontal plane of advance, at least one pair of motorised flexible transmission members extending along a closed loop and bearing a plurality of transverse bars fastened to said flexible transmission members, a plurality of thruster elements borne by said bars, and a stationary adjustment station provided with at least one adjustment assembly having a grip organ movable in transverse direction and arranged in such a way as to displace in the transverse direction along the respective bar a thruster element positioned at the grip organ.

Abstract: A ream is selected and separated from a stack of sheets by a separating member which is inserted into the stack at an insertion region defined by images acquired by a television camera moved vertically to cover a given scanning region of the stack. In some embodiments, a focused portion of each image acquired by the television camera is located as a function of the location in the image of a line projected onto the stack at an angle of incidence of other than 90°.

Abstract: A ream is selected and separated from a stack of sheets by a separating member which is inserted inside the stack at an insertion region defined by images acquired by an optical device, such as a television camera, moved vertically to scan a given scanning region of the stack. The optical device and the separating member are oriented with respect to each other such that the insertion region lies in the scanning region.

Abstract: In a device for conveying stacks of sheets of paper, each stack is caused to advance along a pre-set path inside a pocket, which has a resting surface for supporting the stack and is provided with at least one pressure member designed to grip the stack on the resting surface during at least part of the displacement of the pocket along the path.

Abstract: The apparatus is formed of two identical devices (A, A?) installed mirror image-fashion, each of which is equipped with a pressure bar (19, 19?) fitted to overhang the relevant lateral toothed conveyor belts (T, T?) which move and recircle the sai bars, and which are in their turn activated by relevant motors (8, 8?) with electronic speed and phase control governed by one programmable processing unit (26). When the length of the products (P) is less than the length of the straight branches of the conveyors moving the said bars, the two devices are installed mirror-image fashion, with the axles of the pulleys of one conveyor aligned with those of the corresponding pulleys of the other conveyor. In this position, the bars (19, 19?) of the two devices alternate in taking, moving foward by pushing and the final placing of the product in the workstation (K).

Abstract: The wrapping of groups of products positioned according to a determined number of mutually superposed layers is achieved by feeding in succession groups of products firstly into a tubular case made to heat-sealable material and, then, to a first wrapping device when the number of layers is equal to one and to a second wrapping device when the number of layers is at least equal to two; the two wrapping devices being able to wrap each group inside a related wrapping sheet, which is folded substantially in contact with the related group, and which is stabilized by means of sealing operations.

Abstract: A packaging machine has a wrapping device for forming a tubular wrapping from a continuous web of heat-seal material, and for feeding products successively into the tubular wrapping; each product being located between two free tubular portions of the tubular wrapping, which are folded substantially onto the relative products, and are stabilized by means of at least two pairs of sealing devices fed along relative paths with independent laws of motion.

Abstract: The thrust bars (11), which are placed behind the product in the transfer phase from a first transport line (L1) to a downstream line (L2), have an adjustable stop (12) resting against the one side of the product in the direction of travel of this product. Articulated joints (10, 10?), connect the ends of the bars to corresponding points of the upper branch or the lower branch of a parallel pair of toothed belt conveyors (T, T?) fed on pulleys with horizontal axles, which are inclined at a right angle to the conveyors (T,T?) which bridge the area between the two transport lines and which with their one branch, work in the direction running from the upstream line to the downstream line at an identical speed to each other such as to be able to effect, with the above-mentioned bars, the transfer of products from one conveyor belt to the other by rear and side thrust.

Abstract: Equipment for superimposing layers of products to be packaged (P), comprising: a feed surface (12) associated to a first product-feed device (18); and a pair of preparation surfaces (24, 26) set on top of one another and designed to receive each a respective layer of products to be packaged (P), the preparation surfaces (24, 26) being associated each to a respective feed device (36, 38), the said feed devices (36, 38) being designed to cause synchronized advance of corresponding layers of products (P) along the preparation surfaces (24, 26). Both of the preparation surfaces (24, 26) are mobile so as to bring alternately the respective product-intake end (28, 30) into a position corresponding to the product-output end (16) of the feed surface (12).

Abstract: A packaging machine has a wrapping device for forming a tubular wrapping from a continuous web of heat-seal material, and for feeding products successively into the tubular wrapping; each product being located between two free tubular portions of the tubular wrapping, which are folded substantially onto the relative products, and are stabilized by means of at least two pairs of sealing devices fed along relative paths with independent laws of motion.

Abstract: An apparatus for wrapping reams of paper in which the units for forming the first tube are adjacent to the devices for lateral folding of the first tube in order simultaneously to form lateral flaps.

Abstract: In a device for conveying stacks of sheets of paper or the like, each stack is caused to advance along a pre-set path inside a pocket, which has a resting surface for supporting the stack and is provided with at least one pressure member designed to grip the stack on the resting surface during at least part of the displacement of the pocket along the path.