摘要:
An interfolding machine (25) includes an assembly for and method of separating overlapped sheets of material at a desired sheet count. The assembly includes a vacuum assembly with a manifold having a plurality of vacuum inlet ports (165a-d) coupled to a valve body (145) having a plurality of chambers (148a-d). A spool (140) is contained within the valve body (145) and includes a plurality of ports (210a-d) to provide a plurality of respective vacuum paths (185) to a rotating count roll. The spool (140) also includes a plurality of inlet openings in its outer surface. Each opening in the spool communicates with a respective set of count roll vacuum ports with a respective interior chamber of the valve body. A control valve (155) selectively releases the vacuum pressure in the vacuum chambers (200a-d) to atmosphere. The selective application of vacuum pressure to the holes in the count roll creates a fold that separates the sheets to form separate stacks of sheets at the discharge of the interfolding machine.
摘要:
An interfolding machine includes a folding roll having a tucker assembly (20) configured to interact with a gripper assembly (100) of an adjacent folding roll for gripping and folding a sheet of material into a zig-zagged stack. The tucker assembly (20) includes a tucker (120) positioned in a cavity or slot in the folding roll (95). The tucker assembly further includes an axial air supply passage (194) disposed along a central axis of the folding roll, and an outwardly extending passage (173) extending from the axial air supply passage to the cavity. The axial air supply passage is configured to receive and communicate a flow of air to the outwardly extending passage, which is configured to direct the flow of air in a radial outward direction along the cavity. The disposition of the tucker (120) in the cavity is configured to create positive air pressure around the tucker so as to inhibit dust and debris from contaminating the components of the tucker assembly.
摘要:
A mechanism for offsetting or overlapping successive sheets of material in an interfolding machine includes a bed roll (45) rotating at a first speed and a retard roll (55) rotating at a slower, second speed and positioned adjacent the bed roll (45). As successive sheets are transferred from the bed roll to the retard roll, the sheets are engaged by a nip roller assembly (60) positioned adjacent the retard roll (55) and forming a nip through which the sheets pass. The retard roll (55) forms a deflection or bubble (225) in the individual sheet passing through the nip, which enables a successive sheet to be positioned beneath the previous sheet, thereby forming the overlap of the successive sheet with the previous sheet.
摘要:
An interfolding machine includes a rotating roll with a series of ports (119) configured to apply a vacuum pressure for holding and releasing sheet or web material. The interfolding machine further includes a valve assembly (130,140,145) to regulate the vacuum pressure communicated to a surface (120) of the rotating roll for holding the sheet or web material. The valve assembly generally includes an outer slug (130) and an inner slug (140) coupled by a pilot ring (135). A spool (145) is mounted to the inner slug. The spool includes an opening to receive a draw of fluid through the outer and inner slugs. A cover (150) defines a cavity with the spool in communication with the opening to the spool and a port in the cover. The outer slug and the inner slug define an intake region through which suction is supplied to the roll ports (119) during a portion of the rotation of the roll. The outer slug (130) and the inner slug (140) are rotatably adjustable relative to the spool (145) and to one another to regulate the length and position of the intake region.
摘要:
A mechanism for offsetting or overlapping successive sheets of material in an interfolding machine includes a bed roll (45) rotating at a first speed and a retard roll (55) rotating at a slower, second speed and positioned adjacent the bed roll (45). As successive sheets are transferred from the bed roll to the retard roll, the sheets are engaged by a nip roller assembly (60) positioned adjacent the retard roll (55) and forming a nip through which the sheets pass. The retard roll (55) forms a deflection or bubble (225) in the individual sheet passing through the nip, which enables a successive sheet to be positioned beneath the previous sheet, thereby forming the overlap of the successive sheet with the previous sheet.
摘要:
A folding machine (25) includes a first folding roll (90,95) with a series of the gripper assemblies (20) and a series of tucker assemblies (T) uniformly and alternately spaced to interact with a series of gripper and tucker assemblies of an adjacent second folding roll. The series of alternately spaced gripper (20) and tucker (T) assemblies interact to grip, carry, and release material in a manner so as to generate a folded stack of material, such as sheet material. Each of the gripper assemblies (20) generally includes a rotatable blade (116), a shaft (120) configured to rotate the blade, a spacer (135) disposed between the blade and the shaft, and a bolt (130) coupling the blade and the spacer to the shaft. A housing is configured with seals to retain lubricated bearings to provide rotation of the shaft of the gripper assembly and to prevent contamination of the bearings.
摘要:
An interfolding machine includes a first folding roll (90) with a series of the gripper assemblies and a series of tucker assemblies (20) uniformly and alternately spaced to interact with a series of gripper and tucker assemblies of an adjacent second folding roll (95). The series of alternately spaced gripper and tucker assemblies interact to grip, carry, and release a sheet of material in a manner so as to generate an interfolded stack of sheets. Each tucker assembly (20) includes an outwardly biased tucker element (125) that is operable to self-center in a slot formed in the folding roll. The tucker assembly further includes a roller (134,136) mounted by a pin (140,142) to the tucker element such that the tucker element rolls along a surface defined by the slot. Another embodiment of the tucker assembly includes a pivot spring and bumper to self-center the tucker element in the slot.
摘要:
A folding machine includes a first folding roll (90) with a series of the gripper assemblies and a series of tucker assemblies uniformly and alternately spaced to interact with a series of gripper and tucker assemblies of an adjacent second folding roll (95). The series of alternately spaced gripper and tucker assemblies interact to grip, carry, and release a sheet material (30) in a manner so as to generate an interfolded stack (32) of sheet material. The folding machine further includes a phase adjustment assembly (20) configured to adjust the location of the fold in the sheet material, to locate the fold in a proper position on the sheet relative to the leading end of the successive sheet. The phase adjustment assembly generally includes a first helical gear (125a,125b) that moves along an axial direction, and an input device (160) configured to cause the axial movement of the first gear (125a,125b) so as to cause a change in phasing and a change in location of the fold in the sheet material.