Classifications

• • D—TEXTILES; PAPER
  • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
  • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
  • D01G19/00—Combing machines
  • D01G19/06—Details
  • D01G19/14—Drawing-off and delivery apparatus
  • D01G19/16—Nipper mechanisms

Definitions

• the invention relates to a nipper unit for a combing machine with a nipper frame and a lower nipper plate, which is attached at its rear end on Zan- genrahmen and at its front, free end a nipper lip which form a nip with a nipper lip of an upper nipper plate
• the upper tong plate is pivotally mounted to the tong frame and is rotatably mounted with a feed roller rotatably mounted above the lower tong plate.
• Such a reciprocating tong assembly (called a “tong" for short) such as a combing machine is disclosed, for example, in EP-1 449
• a combing segment is shown which extends approximately at 90 ° around the circumference of the circular comb
• the pincer is pivoted forwards in the direction of the subsequent tear-off rollers via the tongs below the tongs Swing arms approaches the bottom of the pliers due to the existing swivel geometry te the envelope of the combing of the Kämmsegmentes.
• the invention now has the task of proposing a nipper unit which avoids the described disadvantages of known designs and collisions between the nipper unit and the combing set also avoids the use of longer Kämmgarnur, wherein the distance between the Zangenklemm- point and the outer circle of the Kämmgarnitur should be left to a minimum.
• the tong plate can provide an additional clearance for the movement path of the extended hairline at a small distance from its tong lip, without the combing effect being restricted.
• the stepped step has a height between 2 mm and 5 mm (preferably 3 mm) and extends over most of the length of the lower tong plate in the direction of their attachment.
• the height is measured from the lower limit of the lower forceps plate in the region of the forceps lip, where the lower surface of the forceps plate is not set off yet.
• the distance from the front end face to the beginning of the step-shaped shoulder is between 2 mm and 6 mm (preferably 4 mm).
• the transition surface of the stepped shoulder may be at an obtuse angle with respect to the base of the stepped shoulder.
• this increases the stability of the lower pliers plate and is adapted to the shape of the enveloping circle of the combing set.
• the feed roller facing upper surface of the lower tong plate has a trough-shaped depression. This means that in this area of the trough-shaped depression no additional tray plate is necessary.
• a guide plate associated with the peripheral region of the feed roller is fastened to the forceps frame, the trough-shaped surface opposite the peripheral region of the feed roller adjacent to the trough-shaped depression of the lower tong plate and forms together with this a feed channel.
• a guide plate associated with the peripheral region of the feed roller is fastened to the forceps frame, the trough-shaped surface opposite the peripheral region of the feed roller adjacent to the trough-shaped depression of the lower tong plate and forms together with this a feed channel.
• interchangeable between the trough-shaped recess and the nipper lip guide means are attached.
• these guide means may be guide rods, which extend transversely to the conveying direction of the fiber material.
• the inventive nipper unit should be provided with a combing machine with a rotatably mounted below the nipper unit round comb, which has a comb segment with a combing on a portion of its circumference, wherein the combing extends over a peripheral region of the circular comb, the between 110 ° and 150 ° lies.
• the circumferential range of the combing set can be 130 °.
• Fig. 1 is a schematic side view of an inventively designed
• FIG. 2 is an enlarged partial view of FIG.
• Figure 1 shows a known nipper unit 1 (short "pliers” called), which is pivotally mounted on the pivot arms (also called crank arms) 2, 3.
• two pivot arms 2 are each mounted laterally of a circular comb 4 on the circular comb shaft 5 pivotally.
• the other end of the pivot arms 2 is rotatable.
• weglich mounted on a clamp frame 8.
• the rear pivot arm 3 (there may also be two) is rotatably mounted on a gun shaft 10.
• the opposite free end of the pivot arm 3 is rotatably connected via a shaft 9 with the clamp frame 8.
• the circular comb 4 (sometimes also called combing cylinder) has a comb segment 7 with a combed trim 6 on a partial area of its circumference.
• the forceps 1 consists of a lower forceps plate 12 fixedly connected to the forceps frame 8 via screws 13 and an upper forceps plate 14 (sometimes also called a forceps blade), which is attached to two
• Swivel arms 15, 15 ' is attached. These pivoting arms are pivotally mounted on the tong frame 8 via a pivot axis 16. The movement of the pivot arms 15, 15 'takes place during a comb play on, not shown, known spring arms, which are hinged to an eccentric (not shown) and the pivot arms. Seen in the material flow direction F, a pair of detaching cylinders 24 is rotatably mounted behind the pliers 1. Schematically indicated is a fixed comb 11, which is attached to the clamp frame 8 via fastening means, not shown. On the function of the fixed comb 11 will not be discussed here, especially since this is well known from the prior art.
• a feed roller 27 is rotatably mounted via a shaft 28 which is connected to a drive not shown in detail, via which the feed roller is placed in a discontinuous rotational movement in order to transport the supplied cotton W stepwise.
• the feed roller 27 is rotatably mounted on the shaft 28 at both ends via bearings not shown in detail in bearing receptacles of the nipper frame 8.
• the drive of the feed roller 27 can be done via a known jack drive, which is controlled by the movement of the upper tong plate 14.
• the drive of the feed roller 27 can be done in the forward or reverse of the pliers or pro rata in the forward and reverse.
• FIG. 2 shows an enlarged partial section of the forceps 1 according to FIG. 1 with a forceps lip 30 which is attached to the free end of the lower forceps plate 12.
• the tong plate 12 has a trough-shaped depression which forms a feed trough 26.
• the feed trough cooperates with the feed roller 27 to transport the cotton wool W in the formed feeder channel 25 in the direction of the front tong lip 30.
• a trough plate 20 is additionally fastened by means of screws 23 to the tongs frame 8.
• the tray plate 20 has an arcuate portion 21, which lies opposite the circumference of the feed roller 27 and forms with it a feed gap, via which the wadding is fed to the feed channel 25.
• the end of this arcuate portion 21 connects directly to the beginning of the feed trough 26. This ensures that the cotton W is guided on an approximately closed guide surface below the feed roller 27.
• the trough sheet 20 has a straight portion 22, via which it is fastened by means of schematically illustrated screws 23 on the nipper frame 8.
• the rear end 17 of the lower tong plate 12 is fastened to the tong frame 8 via schematically illustrated screws 13.
• a step-shaped shoulder 19 is provided, which has a height h with respect to a lower boundary surface 33, which can move in the range between 2 mm and 5 mm.
• the transition surface 35 extends at an obtuse angle Y with respect to the offset step surface 34.
• Swivel arm 2 is pivotally mounted on the forceps frame 8.
• the forceps 1 is closed and forms a clamping point 29 for the cotton wool W to be combed out.
• the end of the cotton wool W projecting out of the tong 1 via the clamping point 29 is generally referred to as tuft FB.
• the combing set 6 combs through the tuft FB in order to comb out non-clamped components (eg short fibers).
• the upper nipper plate 14 rests with its nipper lip 32 on the nipper lip 30 of the lower nipper plate 12.
• one (or more) guide rod 38 is fastened above the lower tong plate 12 by means of screws 39 which extends transversely to the conveying direction F of the tongs 1. With this guide rod 38, it is possible, the distance for the cotton wool W between the feed trough 26 and the
• Clamp 29 to vary. D. h., Depending on the height of the respective used guide rod, this distance can be reduced or increased. About this adjustment, the Ecartement can be adjusted to the corresponding fiber material to be processed.
• step-shaped shoulder 19 which extends over the greater part of the length L of the tong plate 12, this collision is prevented and a trouble-free passage of the extended hair comb 6 is ensured.
• the proposed inventive design of the lower tong plate 12 it is possible while maintaining the evaluate geometric relationships of the nipper unit 1 also longer Kämmgarnituren 6 to use, without causing it to Kol- Visible between the pliers and the extended trimmings.

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• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Preliminary Treatment Of Fibers (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=44680949

Family Applications (1)

Country Status (6)

Cited By (2)

Families Citing this family (4)

Citations (1)

Family Cites Families (6)

• 2010
  • 2010-09-22 CH CH15382010A patent/CH703822A2/de not_active Application Discontinuation
• 2011
  • 2011-09-16 CN CN201180045511XA patent/CN103109006A/zh active Pending
  • 2011-09-16 WO PCT/CH2011/000216 patent/WO2012037696A1/de active Application Filing
  • 2011-09-16 JP JP2013529520A patent/JP2013540907A/ja not_active Ceased
  • 2011-09-16 IN IN756MUN2013 patent/IN2013MN00756A/en unknown
  • 2011-09-16 EP EP11761253.1A patent/EP2619360B1/de not_active Not-in-force

Patent Citations (1)

Non-Patent Citations (1)

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