摘要:
The present document concerns a machine for continuous dyeing of leather items, wherein said leather items are passed through two opposite rollers (1, 2) rotating about mutually parallel rotation axes perpendicular with respect to the direction of forward motion of the leather item (P), in "synchronous" mode, i.e. with the same direction as that of forward motion of the leather item. Such a machine being characterised in that the two rollers (1,2) consist of two cylinders the outer surface of which is engraved/knurled, with the formation of pits or other cavities suitable for transferring a predetermined amount of a film (9, 10) of liquid dye product at the same time on the two surfaces of the leather aforementioned product (P1).
摘要:
A method for drying writings and/or images made by digital inkjet printing on a glass sheet (L) in a plant (1) comprising a work surface (2) which supports the glass sheet (L), an inkjet printhead (5) and drying means (3) supplied by an electric power source and mechanically associated with means for moving said drying means (3) along at least one displacement direction (Y) parallel to the underlying glass sheet (L). The method comprises a plurality of translations (T, Ts, Ts', Ts") of said drying means (3) along the displacement direction (Y) and according to mutually opposite directions (Ya; Yr) starting from the initial/final edge to end up on the final/initial edge of said glass sheet (L), and vice versa. The intensity value (A) of the electric current supplying said drying means (3) during any one of the translations (T, Ts, Ts', Ts") is greater than the intensity value (A) of the electric current supplying the drying means (3) during the previous translation.
摘要:
Machine (1) for the treatment of a laminar support (2) on which at least one chemical substance intended to be applied to a leather (4) is spread, configured to be inserted in a treatment line (100) of leather (4) and comprising: - a first reel (3) formed by said laminar support (2) intended to receive said chemical substance which must then be applied to said leather (4), - a second reel (36) formed by said laminar support (2) after said chemical substance has been applied to said leather (4), - an apparatus (42) for removing from said laminar support (2), before its winding on said second reel (36), of the residues of said chemical substance that has not been applied to said leather (4), characterized in that during use: - said second reel (36) is in a position substantially below the footprint of said apparatus (42) in the direction of development of said treatment line (100).
摘要:
A machine (50) for painting tannery hides (P) comprising: a spray booth (51), a drying oven (52), a conveyor belt (53) with flexible cords (54) for conveying the hides (P) and a grooved shaft (1; 100; 200) placed transversely to the conveyor belt (53) and provided with radial annular grooves (4) to keep the flexible cords (54) parallel to each other and spaced apart during their forward movement. Each groove (4) is defined by two radial annular discs (3) coaxial with each other and spaced apart having the radial annular walls (30) inside each groove (4) and opposite each other which are shaped such that they have intermediate points (9a; 29a; 59a) the distance (9b; 29b; 59b) of which is less than the maximum distance (6a) between the radial annular walls (30) measured at the outer annular perimeter edges (6) of the radial annular discs (3). Said distances are measured in the direction defined by the longitudinal axis (X) of the grooved shaft (1; 100; 200). This configuration of the grooves (4) and their radial annular walls (30) prevents the soiling of the outer annular perimeter edges (6) due to contact with the dye present on the flexible cords (54).
摘要:
The finding concerns a splitting machine for splitting the thickness of hides in two parts in the transverse direction, in order to separate the upper part from the lower part thereof, provided with an automatic feeder for transporting, stretching and inserting the hide between the conveyor rollers, of the type composed by two belts (11, 12) wrapped in a loop, mutually superimposed so as to determine an intermediate zone where the hide (P) slides and where the front ends (1, 2) of said belts (11, 12) are positioned in the hide introduction zone (13) as close as possible to the conveyor rollers (101, 102) of the splitting machine (100). Said feeder (10) is characterized in that it is provided with means that operate so that, when the edge (P2) of the hide (P) is inserted between the conveyor rollers (101, 102), simultaneously to the separation of the hide by the cutting blade (103), determine the retraction of the upper belt (11) only from the hide (P) introduction zone between the conveyor rollers (101, 102).
摘要:
It is an improved de-dusting machine (1) for cleaning leathers (P) which comprises a load-bearing framework (2) suitable to rest on a reference surface (S), a conveyor belt (3), coupled with the load-bearing framework (2), provided with an upper surface (3a) suitable to receive leathers (P) of various sizes in spread position and operatively connected with first driving means suitable to move the conveyor belt (3) to put the leathers (P) advancing along a predetermined longitudinal direction (X), and cleaning means (4), associated with the conveyor belt (3), suitable to cooperate by contact with the leathers (P) spread out on the conveyor belt (3) so as to remove impurities, dust and/or shreds (B) present on the front (S a ) and/or rear surface (S p ) of the leathers (P), the cleaning means (4) comprising a surface coating (5) made of adhesive material suitable to remove by detachment from the leathers (P) and retain the impurities, dust and/or shreds (B). In particular, the improved de-dusting machine (1) of the invention comprises grinding means (6), operatively connected with the cleaning means (4) and operated in such a way as to define a rest position, in which the grinding means (6) are far away from the cleaning means (4), and a working position in which the grinding means (6) are arranged adjacent to the surface coating (5) of the cleaning means (4) with which cooperate by contact in order to remove by abrasion a part of the material of the surface coating (5) of the cleaning means (4) restoring the cleaning ability of the cleaning means (4).
摘要:
A dryer (1) for flexible laminar elements, preferably animal hides (P), comprising a drying tunnel (2) in which a partition wall (13) defines a first drying chamber (14) provided with an intake piping (7) and a second drying chamber (15) provided with a delivery hood (8) and in which a collector duct (9) connects the intake piping (7) with the delivery hood (8). In the drying tunnel (2) there are two lateral extractor hoods (21) housed in the second suction chamber (15) and arranged one on one side and one on the opposite side of the transport surface (3), each of the suction mouth (21a) arranged in a lower position than the transport surface (3). A suction piping (25) connects each lateral extractor hood (21) to an extractor (23) having the discharge piping (24) communicating with the external environment and connected to an auxiliary piping (28) communicating with the collector duct (9).
摘要:
A dryer (1) for flexible laminar elements, preferably animal hides (P), comprising a drying tunnel (2) in which a partition wall (13) defines a first drying chamber (14) provided with an intake piping (7) and a second drying chamber (15) provided with a delivery hood (8) and in which a collector duct (9) connects the intake piping (7) with the delivery hood (8). In the drying tunnel (2) there are two lateral extractor hoods (21) housed in the second suction chamber (15) and arranged one on one side and one on the opposite side of the transport surface (3), each of the suction mouth (21a) arranged in a lower position than the transport surface (3). A suction piping (25) connects each lateral extractor hood (21) to an extractor (23) having the discharge piping (24) communicating with the external environment and connected to an auxiliary piping (28) communicating with the collector duct (9).
摘要:
The finding concerns a splitting machine for dividing the thickness of skins in two parts, transversally, so as to separate the upper part from the lower part of said skins. In such a machine, with methods per se known, there is an upper conveyor roller (100), as well as a second articulated roller (200), between which the skin (P) is introduced and also a third roller (300), arranged below with respect to said second roller (200). The present invention provides that in such a splitting machine there is an introduction zone which conveys the skin directly into the cutting area, the stretching/widening of the above mentioned skin, which starts from the central area and extends laterally outwards, being carried out by means for stretching action and introduction action of the skin between the rollers.