FR2615531A1 - LOWER SLEEVE HOLDER FOR DRAWING BENCHES OF WORK SHOPS - Google Patents

Abstract

THE LOWER SLEEVE SUPPORT 8 HAVING A LOWER SLEEVE GUIDE 10, A RETURN ROLLER 11 ENTRY SIDE AND A 12 EXIT SIDE EDGE IS REMOVABLE FIXED TO THE MACHINE FRAME. THE SUPPORT 8 IS MADE OF PLASTIC MATERIAL, WITH A FIXING CLAMP 19 FOR ITS SNAPPING ON A PROFILED BAR 20.

Description

-1- Support this lower sleeve For benches o etiraae this machine has

  A known lower sleeve support for draw-out benches of the type (Patent Application DE-35 09 164), which is associated with a set of upper sleeve held in a support and pressure arm, and which possesses a lower sleeve guide determining the plane of the etching field and carrying a return rollers arranged on the input side and a return edge made on the output side, the return roller disposed opposite to the roll of the upper sleeve being held by the latter in application against a machine-side drive roller associated with the outer surface of the lower sleeve, and the lower sleeve support being fixed removably to the frame of the machine, certainly allows the attachment and if necessary the exchange of the lower sleeve, For this purpose it is necessary first to disassemble and re-fix the lower fixed sleeve holder on the ch & ssls of the

  machine by means of one or more screws.

  In another lower sleeve holder (patent application DE-33 25 519) in the form of a roller guide, two adjacent roller guides are connected to each other by guide wings. The guide pins are provided with centering fingers which serve to fix the roller guides on a drawing plate fixed to the machine.This type of centering involves a determined separation of

the machine.

  The object of the present invention is to provide a inferner sleeve support which can be easily inserted and removed from the machine,

  regardless of machine separation.

  This object is achieved in the case of an inferior sleeve support for spinning bedding benches, which is associated with an upper sleeve assembly held in a support and pressure arm, and which has a sleeve guide. lower determining the plane of the drawing field and carrying a return roller has input side and a return edge made side

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  2, the return roller has opposite the roller to the upper sleeve and maintained by the latter in application against a roller machine side associated with the outer surface or the lower sleeve, and the support this lower sleeve being fixed removably to the frame of the machine, in that on the lower sleeve support, is made as a plastic part, is formed a clamp which is clqlguetee on

  a profile bar attached to the machine.

  With the lower sleeve support according to the invention, snapping on the profiled bar allows a fixation on the

  machine, which is independent of the separation.

  Since the fastening clip on the lower sleeve holder is very far away from the deflection roll, the lower sleeve holder can perform pivotal movement about its point when the support arm is pivoted upward and upwardly. in which the return roller and the lower sleeve emerge from the driving contact with the drive roller, ie the lower sleeve

stop.

  The extent to which, in the lower sleeve support, the return roller is mounted so that it can be moved in translation in a limited manner parallel to the plane of the drawing field, provides the advantage that the lower sleeve, in the state free of load pressure and also in the free state of the lower sleeve holder of the machine, is, due to the possibility of displacement of the return roller, loosely and in the sleeve holder lower, which allows

  insert it and remove it easily.

  The development of the invention, according to which tongues are made at the two sides of the lower sleeve guide and have guide slots for extensions formed at the ends of the axis of the return roller, facilitates the assembly of the deflection roll in the lower sleeve holder,

  because this is possible also without the use of tools.

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  The development of the invention, according to which the return roller is mounted on Dras pivotally arranged on the lower sleeve support, has the considerable advantage that for the improvement of the fiber guidance and in a suitable manner. the type of fibers to etler (wool or wool / plastic mixture), the guide this sleeve extends in a raised manner relative to the rest of the plane of the draft field, if given the oecalage

  corresponding by raising its fasteners on the machine side.

  The development of the invention, according to which the arms are mounted in an easily exchangeable manner on the lower sleeve support, makes it easy to use pairs of arms of different lengths and thus a corresponding variation in the main length of the field. in a manner adapted to the

  fiber length of the material to be stretched.

  The equipment of the lower sleeve support according to the invention, consisting in producing on the lower sleeve support a scraping edge associated with the outer surface of the sleeve in the direction of movement of the sleeve downstream of the return edge, and comprising a suction opening for the discharge of the materials retained by the ridge, is favorable during operation, the specific combination of construction of the scraper and suction elements with the fixing clamp made on the lower sleeve support The development of the invention, according to which the wall of the channel turned towards the fixing clamp has a bore, which is associated with an opening formed in the profiled bar made as a tube, is particularly advantageous for the construction of a suction device, because both the clamp on the inner sleeve support and the profiled bar attached to the ma China are used in addition as parts of the suction pipe. The non-round shape of the channel section has the advantage that, when the channel is not in use, a molded part can be inserted into this channel, be fixed in rotation and carry an additional piece in turn. requiring such a type of attachment, for example a Dross or a cleaning roller associated

has a draw roll.

  The development of the invention according to which guiding wings for the return strand of the sleeve are made on the underside of the sleeve guide provides good sleeve guidance during operation and at the same time a safe support for the

relaxed sleeve in the stopped state.

  For the equipment of the lower sleeve support with sleeves having longer predefined lengths, it is advantageous to fix on one of the guide wings a device that tension for the lower sleeve, because one of the wings can here be used for fixing another guiding and tensioning means

necessary in this case.

  The development of the invention, wherein the guide wings are connected to each other by these side walls which extend on both sides of the wings at right angles to the sleeve guide and on which are formed Lateral guide edges result in increased stability of the individual wings and a stiffening effect for the entire lower sleeve support.

  still more the guiding of the sleeve.

  These side walls may be used to secure additional assemblies, for example for elements of a displacement and tension control device associated with the wick. The development of the invention according to which a support plane for a cage of the upper sleeve is formed on the lower sleeve support, laterally with respect to the return edge, proves favorable for the determination of the width of the an outlet opening between the upper sleeve and the lower sleeve, the support planes for the upper sleeve can be made from both sides or on one side of the lower sleeve support, depending on whether the lower sleeve support is associated has a support arm and pressure equipe this upper rollers

individuals or twins.

  The development of the invention according to which the surfaces at the sleeve guide and the return roller are made slightly seeded, guarantees a particularly great sliding capacity of the sleeve lnferieur on the guide this sleeve and easy movement on the return roller, because suction is prevented from appearing with smooth surfaces due to

of air inclusions.

  The lower sleeve support according to the invention with its mentioned embodiments thus constitutes an element that responds in this advantageous manner to multiple needs of the practice, while

being of a simple realization.

  The invention is explained in more detail below with the aid of examples. In the drawings, FIG. 1 shows a side view of a partial zone of a drawbench for spinning machines, in the operating position, FIG. 2 represents a smaller scale with respect to FIG. 1. a front view of a pair of lower sleeve holders with an upper sleeve guide resting on this pair, all parts being shown without the sleeves, Fig. 3 shows a side view of the drawbench with lower sleeve guided differently, and Figure 4 shows a side view of a draft bench with another embodiment for a lower sleeve support. In the. Figures 1, 3 and 4, the numeral I designates a machine frame, in which are mounted a drive roller 2 for lower sleeves and a lower roller 3 controlled output. On the latter is an upper outlet roller 4 held in a support and pressure arm not shown, and this arm carries in addition an upper sleeve assembly which is

26 15531

  constituted by a roll 5 of upper sleeve, a cage 6 which

  upper sleeve and upper sleeve 7.

  As shown in Figure 1, a lower sleeve support 9, fixed in the chassis I of the machine and generally designated by 8, is associated with this set. For the support and guidance of the lower sleeve 9, a sleeve guide defining the plane of the drawing field is provided on the lower sleeve support 8, is preferably a plastic material, a return roller 11 is clamped on the input side of the support, a ridge 12 is formed on the output side, and these wings 13 and 14 are provided on the lower face of the

  sleeve guide 10 for the return strand of the sleeve.

  For the articulation of the deflection roll 11, tabs 15 are made on the lower lug support 8 of the two sides of the sleeve which each have a guide slot 16 parallel to the plane of the drawing field for extensions. 17 being at the end of the axis of the return roller il and pitting in the slot by complementary form. By discarding the ends of the tongues, the return roller 11 can be inserted into this support and it is then kept mobile in translation.

  limit way corresponding to the length of the guide slots 16.

  In all the examples, the lower sleeve support 8 is fixed in the same way on the frame 1 of the machine. In the region of its output side end, a fastening extension 18 is made on the lower sleeve support 8, in which a fastening clip 19 is formed open in the direction of the load pressure exerted by the upper sleeve assembly. on the lower sleeve support. The shape of this clamp is adapted to a bar 20 with round profile, fixed on the chs! of the machine and extending parallel to the rollers 2 and 3, so that it surrounds this bar on more than half. By using the elasticity of its material, the fastening clip 19 can thus be snapped onto the bar 20 forming the attachment piece for the lower sleeve support 8, which is possible, as well as the release, only when the support arm and pressure is

  enough away by pivoting.

  Therefore, the device described only sets the sleeve holder 8 in a defined manner only in the direction of the load pressure and in the direction of the plane of the drawing field. In the operating position shown in Fig. 1, the roller 5 of the upper sleeve biases the idler roller 11 and presses it tightly against the drive roller 2 rotating in the direction of the arrow, and the lower sleeve 9 thus press with its outer surface against the drive roller 2 rotates, as well as the upper sleeve 7 also driven in this case. During the discharge, the lower sleeve support 8 can pivot about its articulation point 19, 20 in the counterclockwise direction, and in addition the return roller 11 can move in its joints 16, 17, following which there is more than a slight contact between the lower sleeve 9 and its drive roller 2, which is no longer sufficient to drive the sleeve. By overcoming the latching effect, it is possible to release the lower sleeve holder 8 from its fastener 19, 20 and remove it from the machine. Then, the lower sleeve 9 can be pushed on the side, which is further facilitated by the fact that the return roller 11 moves to the other end of its slotted support 16, 17, after which the sleeve 9 is quite loose and can be pushed easily on protruding guide edges 21, 22 formed on the side walls 23. On the lower sleeve support 8 shown in FIG. 3 is a lower sleeve 9 'which has a predetermined length greater than that of the lower sleeve shown in Figure 1. For the sor guide this lower sleeve 9 ', which does not slip in this case on the guide flanges 13, 14, a tensioning device is placed on the 14-guiding wing, which can be a piece e] astique or possess as shown a boltier 24 pushes on the wing 14, which is guided in a tension pad 26 subjected to the force of a pressure spring 25 and movable in translation li mitée, on which the deflection portion of the lower sleeve 9 'slides and is maintained. The lower sleeve holder 8 in FIG. 4 differs from the supports described heretofore by the fact that the return roller 11 is mounted on arms 27 which are pivotally arranged around hinge points 28 on the support body. The return roller 11 is inserted into the free ends of the arms 27, the hinge points in the arms for the extensions 17 of the axis of the return roller being not necessarily slots because their role is

  filled by the ability of the arms 27 to pivot.

  This ability of the arms 27 to pivot allows, with a constant position of the return roller 11 and the drive roller 2, to bring the sleeve guide 10 in another plane, raised from the rest of the plane of the field of view. stretching, with a view to improving the

  guiding the fibers and adapted to the material to be stretched.

  For this purpose, the bar 20 ', forming the machine-side fixing piece for the lower sleeve support 8' and produced here as a tube for reasons described below, is fixed on a block 29 which is adjustable in the frame! of the machine in the direction of the double arrow indicated and on which is fixed also a support rail 30 on which rests the support 8 'of lower sleeve with its guide edges 22. According to the setting position given to the block 29 in the chassis! of the machine, the sleeve guide is in the desired elevated position within the plane of the drawing field. Block adjustment can also be done centrally by training a

pin or eccentric.

  To adapt to the material to be treated, the main drawing field of the drawing bench delimited by the sleeves 7 and 9 may have another length when, as indicated in phantom, a pair of arms having a A different length is inserted in the hinge point 28, which places the return roller also indicated in phantom at a greater distance from the edge of the reference 12. For this purpose it is advisable to modify, as incilque in phantom, the position of the drive roller 2 in the frame 1 of the machine and suitably also the ensemoie du

upper sleeve.

  On all the supports 8, 8 'of lower sleeve, a scraper edge 31 associated with the outer surface of the sleeve is made in the direction of movement of the sleeve downstream of the edge of this reference, for the remains of fibers, soiling or analogs adhering to the sleeve. As is apparent from Figure 2, this ridge

  scraper is an edge of a wall 32 of the attachment extension 18.

  For the evacuation of the materials retained by the edge, a suction opening 33 made in the wall 32 opens into a channel 34 which extends in the attachment extension 18 between the wall 32 and

the clamp 19.

  It is possible not to use as channel suction channel 34 open at both ends and in this case it can be closed by inserts lids, to prevent the accumulation of dirt. The channel 34 advantageously having a non-round section, it can serve as shown in Figure 3 to the immobilization in rotation of a molded piece 35, on which is fixed a support 36 of a cleaning brush 37, associated by roller

  lower 3 exit, or a cleaning roll.

  When using the channel 34 as a suction channel, it is closed by a cover at one end and on the other side, it is possible to insert the end of a pipe which is provided with

  molded piece and connects to a suction device on the machine side.

  It is particularly advantageous when, to avoid bringing a conduit to each channel, a bore 38 is household as shown in Figure 4 in the wall rotated to the fastening clamp 19 of the channel 34 closed on both sides, piercing which is associated an opening 39 housed in the room oe fixation achieved

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- 10 -

  as bar 20 'in the form of a tube, the bar 20' being connected to the

  suction device on the machine side.

  As can be seen in particular from FIG. 2, a support plane 40 is made laterally with respect to the return edge 12 on the lower sleeve support 8, on which a spreader 41 attached to the cage 6 rests in the operating position. super-sleeving sleeve, which determines the width of the opening between the sleeves 7 and 9. In the illustrated case of using the lower sleeve supports with respect to a support and pressure arm with twinned upper rollers, it is sufficient to to carry out the support planes 40 only on one side of the reference beam 12, but in a thoughtful way. With respect to a support and pressure arm provided with individual upper rollers, however, it is necessary to make support planes 40 on both sides of the ridge.

of referral.

  For fixing other additional assemblies, it is possible to provide in the support 8, 8 'of lower sleeve and in its side walls 23 articulation openings such as the opening of artlcul] atlon 42 shown in the figures 1, 3

and 4.

  For easy sliding of the lower sleeve 9, 9 'on the lower sleeve support and for easy movement on the return roller 11, their envelope and in particular the sleeve sleeve guide 10 and, as indicated in FIG. 2, 12 are provided with a slightly seeded surface, called orange peel, which allows the sliding or the inclusions of air, favoring the easy movement, between the sleeve and the surface of

sliding or moving.

- l1 -

Claims (17)

claims   1. Lower sleeve support for draw benches, which is associated with an upper sleeve assembly held in a support and pressure arm, and which has a lower sleeve guide, determining the plane of the field of view. Withdrawal and carrying a return roller has an input side and a return edge made at the exit end, the return roller has the opposite way to the upper sleeve roller being held by the latter in application against a machine-side drive roll associated with the machine. outer surface of the lower sleeve, and the lower sleeve holder being releasably fixed to the frame of the machine, characterized in that on the lower sleeve holder (8), made as a plastic part, is formed a clamp (19). ) which is snapped onto a profiled bar (20; 20 ') attached to the machine.   2. Lower sleeve support according to claim 1, characterized in that, in the lower sleeve holder (8), the return roller (11) is mounted so that it can be moved in a limited manner parallel to the plane. stretching field. 3. Lower sleeve support according to claim 2, characterized in that it comprises tongues (15) cantilevered made of the two sides of the guide (10) of lower sleeve and having guide slots (16). ) for extensions   (17) forms at the ends of the axis of the return roller (11).   4. Lower sleeve support according to any one of   Claims I to 3, characterized in that the return roller   (11) is mounted on arms (27) pivotally disposed on the   support (8 ') of lower sleeve (fig.4).   5. Lower sleeve support according to claim 4, characterized in that the arms (27) are mounted in a manner   easily exchangeable on the support (8 ') of lower sleeve. - 12 -   6. Lower sleeve support according to any one of   Claims I to 5, characterized in that on the support (8, 8 ')   of lower sleeve, a scraper edge (31) associated with the outer surface of the sleeve (9, 9 ') is made in the direction of movement of the sleeve downstream of the return edge (12). 7. lower sleeve support according to claim 6, characterized by a suction opening (33) associated with the scraper edge (31) for the evacuation of the material retained by the latter. 8. Lower sleeve support according to claim, characterized in that the scraper edge (31) is a wall (32) of a fixing extension (18) made on the support (8, 8 ') of   lower sleeve and containing the clamp (19).   9. lower sleeve support according to claim 7 or 8, characterized in that the suction opening (33) opens into a channel (34) which extends in the area between the wall (32) having   the scraper edge (31) and the clamp (19).   10. lower sleeve support according to claim 9, characterized in that the wall of the channel (34) facing the clamp (19), has a bore (38) which is associated with an opening (39) formed in the shaped bar made as a tube (20 ') (Fig. 4).   11. Lower sleeve support according to claim 10,   characterized in that the channel (34) has a non-round section.   12. Lower sleeve support according to any one of   claims 1 to 11, characterized in that wings of   guiding (13, 14) for the return strand of the sleeve are made to   the lower face of the sleeve guide (10).   13. Lower sleeve support according to claim 12, characterized in that on one of the guide wings is fixed a   tensioning device (24, 25, 26) for the lower sleeve (9 ').   Lower sleeve holder according to claim 1, characterized in that the guide flanges (13, 14) are connected to each other by side walls (23) which extend - 13 -   two sides of the wings at right angles to the guise (10) ae sleeve and on which are formed side guide edges (21, 22).   15. Lower sleeve support according to claim 14, characterized in that the side walls (23) contain aes   openings (42) for mounting additional elements.   16. Lower sleeve support according to any one of   Claims 1 to 15, characterized in that a support plane (40)   for an upper sleeve housing (6) is formed on the lower sleeve support (8, 8 '), laterally with respect to the cutting edge referral (12).   Lower sleeve holder according to one of Claims 1 to 16, characterized in that the surfaces of the sleeve sleeve (10) and the deflection roller (11) are formed slightly seeded.