Teaseling and/or fluffing machine for fabric and knit-work with improved suction and cleaning

Abstract: A teaseling and/or fluffing machine for fabric and knitwork with improved suction and cleaning, comprising a load-bearing structure with two sidepieces (10) supporting at least one drum (11) which rotates about a central shaft (12) and supports on its two lateral endpieces (11a, 11b) two series of teaseling and/or fluffing rollers of with-pile type (13) and against-pile type (14) arranged along the generators of the drum (11) with those of one series rotating relative to those of the other under independent drive, a fabric (15) to be treated passing about the teaseling and/or fluffing rollers (13, 14) and being fed to the machine by a driven feed roller (16) and extracted therefrom by a driven exit roller (17), there being provided brushes (19a, 20a; 19b, 20b) which interact alternately with the teaseling and/or fluffing rollers (13, 14), wherein a suction unit associated with apertures (37) provided in a sidepiece (10) of said load-bearing structure creates a suction within said drum (11) to collect the fibres and dust generated during operation. The brushes are specifically divided into two mutually interacting groups of two (19a, 20a; 19b, 20b).

Description: This invention relates to a teaseling and/or fluffing machine for fabric and knitwork with improved suction and cleaning. Known teaseling and/or fluffing machines are composed essentially of one or more drums rotating with predetermined direction and speed, along their circumference there being housed a certain number of teaseling and/or fluffing rollers see for example EP-A-470571, upon which the preamble of claim 1 is based. If the rollers are teaseling rollers they are embraced by cloth carrying the needles alternately in the same direction as the fabric (with the pile) and in the opposite direction (against the pile), they rotating about themselves under independent control. The same applies to fluffing rollers, which carry an abrasive paper covering instead of cloth carrying needles. These rollers also rotate with predeterminable speed and direction. It should be noted that during its operation the machine produces a considerable quantity of down, filaments and dust which partly deposit between the needles of teaseling machines or on the abrasive paper of fluffing machines, and partly escape into the environment, especially the dust. Although no collection system is provided in the machine for the dust which escapes into the environment, there is generally an arrangement consisting of a pair of sector brushes for cleaning the teaseling and/or fluffing elements. Depending on their type, the sectors are used either for the with-pile rollers or for the against-pile rollers, and operate in phase with the drum during the short passage of the relative teaseling and/or fluffing rollers through the relative brush region. The filaments or fibres removed from the brushes are then collected via a suction mouth positioned below the brushes, see for example FR-A-341440. Apart from the need to solve the environmental problem by providing the machine with collection systems suitable for the particular case, it is also necessary to provide the machine with a more efficient brushing system. It should also be noted that teaseling and/or fluffing machines are virtually identical in terms of their layout. They have the drum at the top, the brushes at the bottom and the suction mouth below the brushes. The reason for this layout is to enable the fibres and filaments to fall downwards by gravity in order to improve cleaning. However it has proved not to be so in reality because the air movement deriving from the rotation of the drum and the teaseling and/or fluffing rollers and the movement of the fabric means that the brushing and suction system collects only those fibres deriving from the needles or the abrasive paper of the relative teaseling and/or fluffing rollers. The object of the present invention is to solve the aforesaid problems. This object is attained according to the present invention by a teaseling and/or fluffing machine for fabric and knitwork with improved suction and cleaning, comprising essentially a load-bearing structure consisting of two sidepieces supporting at least one drum which rotates about a central shaft and supports on its two lateral endpieces two series of teaseling and/or fluffing rollers of with-pile and against-pile type, these being arranged along the generators of said drum with those of one series rotating relative to those of the other under independent drive, a fabric to be treated passing about said teaseling and/or fluffing rollers and being fed to the machine by a driven feed roller and extracted therefrom by a driven exit roller, there also being provided brushes which interact alternately with said teaseling and/or fluffing rollers, characterised in that a suction unit associated with apertures provided in a sidepiece of said load-bearing structure creates a suction within said drum to collect the fibres and dust generated during operation. In the machine the brushes are divided into two groups each comprising a first rotating brush directly interacting alternately with said teaseling and/or fluffing roller of with-pile or against-pile type, and a second rotating brush interacting directly and continuously with said relative first rotating brush, the interaction between said first and second brushes of said two groups being continuous whereas the interaction of said brushes with said teaseling and/or fluffing rollers being selectively intermittent and predetermined on the basis of the type of roller. The characteristics and advantages of a teaseling and/or fluffing machine according to the present invention will be more apparent from the ensuing description given by way of non-limiting example with reference to the accompanying schematic drawings, in which: Figure 1 is a cross-section through the teaseling and/or fluffing machine according to the present invention taken on the line I-I of Figure 2; Figure 2 is a section on the line III-III of Figure 1; and Figure 3 is a cross-section through a further embodiment of a teaseling and/or fluffing machine according to the invention. The figures show a teaseling and/or fluffing machine for fabric and knitwork with improved suction and cleaning according to the present invention. The teaseling and/or fluffing machine comprises essentially a load-bearing and containing structure consisting generally of two sidepieces 10, on which there is supported a drum 11 rotating about a central motorized shaft 12. The endpieces 11a, 11b of the drum 11 support two series of teaseling and/or fluffing rollers, respectively with the pile 13 and against the pile 14, arranged along generators of the drum 11. In addition the rollers 13 and 14 for example alternate individually with each other and rotate with independent drive and direction one to the other. A fabric 15 to be treated passes partially about the drum 11 and over the teaseling and/or fluffing rollers 13 and 14 and is fed by a feed roller 16, but before passing onto the drum and over the teaseling and/or fluffing rollers 13 and 14 to be extracted by an exit roller 17 it passes about and is controlled by further rollers 16b and 17b. The feed roller 16 and exit roller 17 are located in proximity to two groups of teaseling and/or fluffing roller cleaning brushes. The first group of said brushes comprises a rotating brush 19a alternately interacting directly with a teaseling and/or fluffing roller 13 of with-pile type, and a rotating counter-brush interacting continuously with the rotating brush 19a. Likewise, the second group of brushes comprises a rotating brush 19b alternately interacting directly with a teaseling and/or fluffing roller 14 of against-pile type, and a rotating counter-brush 20b continuously interacting with the rotating brush 19b as shown in Figure 1. Both the brush groups are made alternately and selectively active, the first group always on the with-pile teaseling and/or fluffing rollers 13 and the second group always on the against-pile teaseling and/or fluffing rollers 14. In this respect, for example the plate 21 is pivoted centrally at 22 and supports pivoted at opposing ends the two groups of brushes 19a, 20a and 19b, 20b respectively, it being made to swivel by operating an actuator 23 connected to it and swivel-mounted on the load-bearing structure 10. The brushing system according to the present invention enables two important objectives to be achieved, namely a greater brushing efficiency and the activation of more teaseling and/or fluffing rollers by the facility for approaching the rollers at the drum entry and exit. Further according to the invention, axial suction is provided in a teaseling and/or fluffing machine via one of the sidepieces 10. In this manner a suction is created within the drum 11 to collect the fibres and dust generated during operation, by a suction unit, not shown, associated with apertures 37 provided in a sidepiece 10 of the load-bearing structure, as illustrated in Figure 2 with regard to the endpiece 11b. In this region there is an annular wall 38 connecting the apertures 37 to further apertures 39 provided in the sidepiece 10 to define a header for drawing off the dust produced during operation of the teaseling and/or fluffing rollers 13 and 14, it being connected to a suction unit, not shown. The seal of the annular wall 38 is further improved by providing flange portions 40 facing the drum supporting the teaseling and/or fluffing rollers 13 and 14. Figure 3 shows a further embodiment of the machine according to the invention in which the feed roller 16, the exit roller 17, the further rollers 16b and 17b and the brush groups 19a, 20a and 19b, 20b are positioned in proximity to a vertical lateral wall 18. This achieves a positioning of the brush groups lateral to the drum, so considerably reducing machine maintenance and reducing the path of the fabric in passing from a first drum to a second drum in a multiple machine, not shown. Hence a teaseling and/or fluffing machine according to the invention has the following advantages: efficient cleaning of the teaseling and/or fluffing rollers achieved by interposing continuously rotating counter-brushes with the result of making more teaseling and/or fluffing rollers operative, so increasing efficiency; optimum ecological considerations achieved using systems for collecting the fibres and dust directly at their point of major production, ie within the drum.

Claims: A teaseling and/or fluffing machine for fabric and knitwork comprising essentially a load-bearing structure consisting of two sidepieces (10) supporting at least one drum (11) which rotates about a central shaft (12) and supports on its two lateral endpieces (11a, 11b) two series of teaseling and/or fluffing rollers of with-pile type (13) and against-pile type (14), these being arranged along the generators of said drum (11) with those of one series rotating relative to those of the other under independent drive, a fabric (15) to be treated passing about said teaseling and/or fluffing rollers (13, 14) and being fed to the machine by a driven feed roller (16) and extracted therefrom by a driven exit roller (17), there also being provided brushes (19a, 20a; 19b, 20b) which interact alternately with said teaseling and/or fluffing rollers (13, 14), characterised in that a suction unit associated with apertures (37) provided in a sidepiece (10) of said load-bearing structure creates a suction within said drum (11) to collect the fibres and dust generated during operation. A teaseling and/or fluffing machine as claimed in claim 1, characterised in that said apertures are respectively first apertures (37) in lateral endpieces (11a, 11b) of said drum (11) and second apertures (39) in said sidepieces (10) and are connected together by an annular wall (38). A teaseling and/or fluffing machine as claimed in claim 2, characterised in that said annular wall (38) extends into a flanged portion (40). A teaseling and/or fluffing machine as claimed in claim 1, characterised in that said brushes, divided into two groups, each comprise a first rotating brush (19a, 19b) directly interacting alternately with said teaseling and/or fluffing roller of with-pile type (13) or against-pile type (14), and a second rotating brush (20a, 20b) interacting directly and continuously with said relative first rotating brush (19a, 19b), the interaction between said first and second brushes of said two groups being continuous whereas the interaction of said brushes (19a, 19b) with said teaseling and/or fluffing rollers (13, 14) being selectively intermittent and predetermined on the basis of the type of roller. A teaseling and/or fluffing machine as claimed in claim 4, characterised in that said first rotating brushes (19a, 19b) and said second rotating brushes (20a, 20b), divided into two groups, are pivoted on opposing sides of a plate (21) which is pivoted centrally (at 22) and made to swivel by an actuator (23) connected to it and swivel-mounted on a sidepiece (10) of said load-bearing structure. A teaseling and/or fluffing machine as claimed in claim 1, characterised in that said feed roller (16), said exit roller (17) and said brushes (19a, 20a; 19b, 20b) are positioned at a vertical (18) wall of said machine.

Inventors: DALLA VECCHIA GINO, DALLA VECCHIA, GINO
Applicants: SPEROTTO RIMAR SPA, SPEROTTO RIMAR S.P.A.
Application year: 1993
Main classification: D06C11
IPC codes: D06C11, B65H23