Abstract: Needling machine intended to consolidate, by needling, a web of fibres, in particular a sheet of non-woven fabric, comprising a series of needle-field boards, each board having at least one respective needle field projecting from one face, called the needle face, of the board, means for making the web of fibres move in front of the needles of the boards of the series of boards and means for moving the needles back and forth in a direction transverse to the movement of the web, such that they pass through the web of fibres passing in front of them in one direction and then the other, the series of needle-field boards comprising at least a first board comprising a first needle field and a second board comprising a second needle field, the first needle field being arranged on the needle face of the first board according to a first needle face pattern and the second needle field being arranged on the needle face of the second board according to a second needle face pattern, characterised in that the first needle

Abstract: Device for transferring and/or introducing a fibre web, in particular a nonwoven web, into a consolidation installation, in particular one that is mechanical or hydraulic, for example a needle loom, comprising at least one transfer element comprising at least one roller (12), at least one saber (16) and an endless belt (13) extending between an upstream end and a downstream end so as to wrap around the roller at the upstream end and the saber at the downstream end, the at least one roller being arranged so as to drive the endless belt in rotation, and the at least one saber giving the downstream end of the belt the shape of a corner or lip, the at least one endless belt (13) being modular and consisting of links in the form of transverse strips that are articulated to one another, characterised in that the endless belt (13) consists of a plurality of sub-belts extending parallel to one another.

Abstract: A control system for controlling a needling machine includes at least one needle plate having an array of needles and drive systems. The control system can include a drive tie-rod that can be coupled to one or more of the needles, the at least one needle plate, and a part rigidly connected to the at least one needle plate. The control system can include a cam shaft and a rod, the cam shaft driving the rod in rotation in an axis of rotation, and the rod being connected to the drive tie-rod by a part forming an intermediate lever. The lever can be a single part or a plurality of parts and is able to pivot in relation to a pivot pin.

Abstract: Method for operating a needle loom comprising at least one needle board in which a web or lap of fibres is passed in front of the needles, said web or fibre moving in a so-called feed direction, or machine direction or MD, between two end positions in which the free ends of the needles have a zero speed, and the at least one needle board and/or needles are driven in a back-and-forth movement in a direction other than the feed direction, particularly in the perpendicular direction, or a direction that is substantially perpendicular to the plane of the lap or web, such that the free ends of the needles have, in a first interval extending in the lap or web between an outer surface of the web or lap of fibres and an end position, a first movement having a first speed profile as an absolute value for a first duration, then, in a second interval extending in the lap or web between said one end position and said one outer surface, a second movement having a second speed profile as an absolute value for a second dura

Abstract: A needling device to consolidate a fleece. The device including at least one needle plate with an array of needles; at least one column with its longitudinal axis rigidly connected to the at least one needle plate; drive systems; a sealed housing; and at least one guide pot. The drive systems are configured to impart to the at least one column a to and fro motion so that the needles follow an elliptical path to pass through, in one direction then the other, the fleece that passes in front of it in the machine drive direction to consolidate it. The sealed housing containing part of the column and drive systems and wherein the at least one guide pot is fitted in an opening in the sealed housing and oscillates in relation to an axis of oscillation perpendicular to the longitudinal axis and the machine drive direction.

Abstract: A needling machine to consolidate a fleece. The machine includes one or more needle plates having an array of needles; one or more columns coupled to the needle plates; and driving means configured to impart an elliptical to and fro motion to each needle plate so that the needles pass first in one direction, then the other, over the fleece passing before it in the machine. The machine further comprising a sealed housing enclosing part of each column and driving means; and one or more guide pots within the sealed housing. Each driving means including a longitudinal driving means imparting to each column a straight to and fro motion. Each needle plate oscillates in relation to each respective column. The driving means further comprise transverse driving means imparting to a point on each needle plate a to and fro motion essentially parallel to the machine direction.

Abstract: Needle machine comprising at least one needle plate, from which projects an array of needles, means for imparting an elliptical, reciprocating motion to the needles and at least one support table drilled with an array of through holes, or which it is intended to pass in a direction MD, being supported on it, a fabric or web of fibres to be consolidated by needling, the each executing an elliptical, reciprocating motion in the respective through holes, each having an upper respective opening on the fabric support side, a lower respective opening on the opposite side and an inner sidewall extending between the two upper and lower openings, characterised in that each hole is machined so that there is a longitudinal section with a greater dimension MD in which the upper respective opening of the hole has a greater dimension in the direction MD and, in this longitudinal section of greater dimension MD, the inner sidewall of the hole is defined, at least in its upper region, by two left and right lines inclined to

Abstract: Device for transferring and/or introducing a fibre web, in particular a nonwoven web, into a consolidation installation, in particular one that is mechanical or hydraulic, for example a needle loom, comprising at least one transfer element comprising at least one roller (12), at least one saber (16) and an endless belt (13) extending between an upstream end and a downstream end so as to wrap around the roller at the upstream end and the saber at the downstream end, the at least one roller being arranged so as to drive the endless belt in rotation, and the at least one saber giving the downstream end of the belt the shape of a corner or lip, the at least one endless belt (13) being modular and consisting of links in the form of transverse strips that are articulated to one another, characterised in that the endless belt (13) consists of a plurality of sub-belts extending parallel to one another.

Abstract: Needling machine intended to consolidate, by needling, a web of fibres, in particular a sheet of non-woven fabric, comprising a series of needle-field boards, each board having at least one respective needle field projecting from one face, called the needle face, of the board, means for making the web of fibres move in front of the needles of the boards of the series of boards and means for moving the needles back and forth in a direction transverse to the movement of the web, such that they pass through the web of fibres passing in front of them in one direction and then the other, the series of needle-field boards comprising at least a first board comprising a first needle field and a second board comprising a second needle field, the first needle field being arranged on the needle face of the first board according to a first needle face pattern and the second needle field being arranged on the needle face of the second board according to a second needle face pattern, characterised in that the first needle

Abstract: Needling device to consolidate a fleece or web of fibres, in particular non-woven, by needling, comprising: at least one needle plate with an array of needles; at least one column with its longitudinal axis rigidly connected to the at least one needle plate; drive systems configured to impart to the at least one column a to and fro motion so that the needles follow an elliptical path to pass through, in one direction then the other, the fleece or web of fibres that passes in front of it in the machine or MD drive direction to consolidate it; a sealed housing containing part of the column and its drive system and at least one guide pot fitted in an opening in the sealed housing and oscillating in relation to an axis of oscillation perpendicular to the longitudinal axis and the direction MD, The at least one column passing through the housing through at least one guide pot and sliding in it and drive systems comprising the first longitudinal drive system configured to impart to the at least one column a

Abstract: Needling machine to consolidate a fleece or web of fibres, in particular non-woven, by needling, comprising: one or more needles plates having an array or bank of respective needles; one or more columns with longitudinal, in particular vertical axis, coupled to the respective needle plate; drive systems configured to impart an elliptical to and fro motion to each needle plate and/or needles so that the needles pass first in one direction, then the other, over the fleece or web of fibres passing before it in the machine or drive MD direction to consolidate it; a sealed housing enclosing part of each column and drive system; and one or more guide pots fitted in an opening in the sealed housing, each column passes through the housing through a guide pot, sliding in it, characterised in that, the drive systems comprise a longitudinal drive system configured to impart to each column a straight to and fro motion parallel to the longitudinal, in particular vertical axis; each needle plate can oscillate in relat

Abstract: Control system for the component of the motion in the path of the needles of a needling machine designed to consolidate a fleece or web of fibres, in particular non-woven, by needling, characterised in that it comprises: a drive tie-rod (27) that can be coupled to the needles and/or needle plate and/or a part rigidly connected to the plate or needle plate to impart to them a to and fro motion in one direction, a cam shaft (21) and a rod (22), the cam shaft driving the rod in rotation in an axis of rotation, in particular that extends in a direction perpendicular to the direction and to the vertical direction, and the rod (22) being connected to the tie-rod (27) by means of a part (23) forming an intermediate lever pivoting in relation to a pivot pin (24), in particular parallel to the axis of rotation of the cam shaft, the lever being hinged to a part of the rod, in particular in an axis parallel to the pivoting axis and at a distance from it, and secondly to the drive tie-rod, in particular at a point at a d

Abstract: Needle machine comprising at least one needle plate, from which projects an array of needles, means for imparting an elliptical, reciprocating motion to the needles and at least one support table drilled with an array of through holes, or which it is intended to pass in a direction MD, being supported on it, a fabric or web of fibres to be consolidated by needling, the each executing an elliptical, reciprocating motion in the respective through holes, each having an upper respective opening on the fabric support side, a lower respective opening on the opposite side and an inner sidewall extending between the two upper and lower openings, characterised in that each hole is machined so that there is a longitudinal section with a greater dimension MD in which the upper respective opening of the hole has a greater dimension in the direction MD and, in this longitudinal section of greater dimension MD, the inner sidewall of the hole is defined, at least in its upper region, by two left and right lines inclined to

Abstract: The disclosure relates to a reverse Polish notation processing device making it possible to execute a set of instructions and implementing management of a stack whose size is variable. The device includes a storage device including a random access memory; a device for managing a stack pointer, which is a physical address, in said random access memory, associated with a reference stage of the stack; and a device for managing reference element pointer(s), which is a physical address, in said random access memory, associated with one reference element among elements of a given table contained in the stack. The processing device can execute at least one table-handling instruction with respect to the reference element pointer(s).