EP1639162A1 - Drive for a clamping unit on a combing machine - Google Patents
Drive for a clamping unit on a combing machineInfo
- Publication number
- EP1639162A1 EP1639162A1 EP04716526A EP04716526A EP1639162A1 EP 1639162 A1 EP1639162 A1 EP 1639162A1 EP 04716526 A EP04716526 A EP 04716526A EP 04716526 A EP04716526 A EP 04716526A EP 1639162 A1 EP1639162 A1 EP 1639162A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pliers
- drive
- unit
- axis
- frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- D01G19/26—Driving arrangements
-
- 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
- D01G19/10—Construction, mounting, or operating features of combing elements
Definitions
- the invention relates to a pliers unit of a comber, with a pliers frame having a lower pliers plate, which can be moved back and forth by a drive element via at least one swivel arm, which is pivotably mounted about the axis of a circular comb which is rotatably mounted in the machine frame below the pliers unit.
- DE-4216485 shows and describes a pliers unit which executes a back and forth movement via swivel arms.
- the swivel arms which are rotatably connected to the pliers frame, form a four-bar linkage.
- the result of this is that the pliers lip of the lower pliers plate moves away from the sleeve circle of the circular comb segment when moving in the direction of the tear-off cylinders and approaches this envelope circle again when it moves backward into a rear position. In the rear position, the pliers unit is closed, the fiber beard projecting over the pliers lip being presented to the circular comb segment for combing out.
- the upper pliers plate which is pivotably mounted on the pliers frame via swivel arms, can be moved via spring struts connected to a drive.
- the spring struts are controlled by an eccentric drive to control the movement of the upper pliers plate or to achieve an optimal clamping effect.
- the time of opening and closing of the pliers, as well as the switching reliability of the feed is controlled via the position of the struts or their eccentric drive.
- a drive arrangement of a pliers unit wherein a lower pliers plate is firmly connected to a lever, the pivot axis of which is arranged below a circular comb.
- an articulated rod engages, which is connected to two levers rotatable on one axis.
- These levers carry rollers at their ends, which are each guided on a driven cam. The movement sequence of the pliers unit is controlled via these cams.
- a disadvantage of this design is that the distance from the pliers clamping point to the enveloping circle of the round comb segment does not remain constant during the combing-out process, since the pivot axis of the pivot arm of the lower pliers plate is arranged far below the round comb axis.
- the object of the invention is achieved in that the free end of the pivot arm pivotally mounted about the circular comb axis is firmly connected to the pliers frame.
- At least one further swivel arm connected to the pliers frame via a swivel joint is provided, which is coupled to the drive element, which is connected to a drive.
- the further swivel arm in two parts and to be provided with a swivel.
- an upper pliers plate mounted on the tongs frame via lateral swivel arms is arranged, the swivel arms each being based on a spring strut pivotable about an axis and the axis of the pivotable spring struts fixed in the machine frame below the
- Pliers unit is arranged. With this device it is possible to dispense with a separate control of the upper pliers plate via the spring struts. This means that the corresponding mounting of the spring struts makes it possible for the closing and opening movement of the upper tong plate to be triggered or controlled by the movement of the tong frame. This means that a separate drive is no longer necessary to carry out this movement.
- the axes of the spring struts - as seen in the material flow direction - can be arranged behind the circular comb axis and below tear-off cylinders following the pliers assembly. For example, the movement of the upper pliers plate to certain
- the mounting of the axis of the struts is adjustably fastened transversely to its longitudinal direction in the machine frame.
- the positioning device for the storage is advantageously provided with setting markings.
- the struts can consist of compression springs guided in cylinders.
- means are provided to change the length of the front swivel arms.
- the swivel arms are detachably fastened to the tong frame by means of fastening means, it is possible to set the described minimum distance by inserting or removing spacer plates. Existing manufacturing tolerances can also be compensated for.
- the drive means for the further (or rear swivel arm) is suitable for converting a continuous movement generated by a main drive into a discontinuous movement. It is preferably proposed to make this discontinuous movement adjustable.
- the drive means can also be designed in the form of a driven cam disk, which is connected in a rotationally fixed manner to a shaft continuously driven by the main drive.
- Swivel joint is connected to the pliers frame, which is rotatably supported at its other end on an eccentric which is in drive connection with a drive. This enables a simple drive design, and the eccentric disc can also be driven discontinuously in order to adapt the movement sequences accordingly.
- Figure 1 a schematic side view of a pliers unit of known type
- Figure 2 is a schematic side view of a pliers unit according to the invention
- Figure 3 a simplified representation of Figure 2 with a drive arrangement
- Figure 4 another embodiment of Figure 3 with a cam drive
- FIG. 5 shows a simplified representation according to FIG. 2 with a further embodiment of a drive arrangement
- Figure 1 shows a pliers unit 1, which is pivotally mounted on the crank arms 2, 3.
- Two crank arms 2 are each pivotally mounted on the side of a round comb 4 on its round comb shaft 5.
- the other end of the swivel arms 2 is rotatably attached to the tong frame 8.
- the rear swivel arm 3 (there may also be two) is rotatably mounted on a pliers shaft 10.
- the opposite free end of the swivel arm 3 is rotatably connected to the pliers frame 8 via a shaft 9.
- the pliers assembly 1 essentially consists of a lower pliers plate 12 firmly connected to the pliers frame 8 and an upper pliers plate 14 (sometimes also called a pliers knife) which is attached to two pivot arms 15, 15 '. These pivot arms are pivotally attached to the pincer frame 8 via a pivot axis 16.
- the swivel arms 15, 15 ' are each connected to a spring strut 18, which in turn is mounted on a driven eccentric 21 via an axis 20.
- a tear-off cylinder pair 24 is provided behind the pliers unit. These tear-off cylinders 24 are driven via a drive train 25 of which is shown schematically a transmission G, which is driven by a motor M.
- the motor M is controlled via a control unit ST.
- the pliers shaft 10 is driven by a partial area of the transmission G 1, which is designed to convert a continuous rotary movement generated by the motor M into a discontinuous rotary movement.
- a feed cylinder 27 is rotatably mounted within the tongs unit 1 and performs a discontinuous rotary movement via a drive (not shown in more detail) in order to transport the cotton wool W in sections.
- the drive of the eccentric 21 as well as the drive of the round comb shaft 5 also takes place from the transmission G, as shown schematically by the drive connections 30, 31.
- the forceps unit 1 In the position shown in FIG. 1, the forceps unit 1 is in a rear position, the forceps being closed and the cotton wool W being clamped over the forceps plate 14 or 12.
- the fiber beard FB projecting beyond the clamping point is then grasped and combed by the comb segment 7 of the circular comb 4.
- the pivot arm 3 is then pivoted to the left via the pliers shaft 10, as a result of which the pliers assembly 1 is pivoted about the pivot arm 2 in the direction of the tear-off cylinder 24.
- the pliers unit opens and reaches a front position in which the combed fiber beard FB is placed on the end E of the fleece V.
- the schematically shown reversing movement of the tear-off cylinder brings the end of the fiber beard FB in cooperation with the end E of the fiber fleece V into the clamping point K of the tear-off cylinder 24, as a result of which the fibers not retained in the pliers unit 1 are pulled out of the wadding W.
- a fixed comb is still involved in this process, but this is not shown for reasons of clarity.
- the ends of the fiber beard FB are covered with the end E of the fiber fleece V, as a result of which so-called soldering takes place as soon as the clamping point K has been passed.
- the pliers return to the position shown in FIG.
- FIG. 2 shows the design of the drive arrangement for the pliers unit 1 claimed according to the invention.
- the pliers unit 1 is also pivoted about a round comb shaft 5 of a round comb 4 via swivel arms 2 a attached to both sides of the round comb during its back and forth movement.
- the swivel arm 2 a is firmly connected to the pincer frame 8.
- the distance a between the tong lip 13 of the lower tong plate 12 and the envelope circle H of the comb segment 7 remains constant during the tong movement.
- the swivel arms 2 a are each formed from two parts 2 a ′, 2 a ′′, which have fastening elements, for example
- Screws 22 are releasably connected together.
- the connection point 17 is designed such that corresponding spacers 19 can be inserted between the sections 2a 'and 2a" which serve to set the distance a.
- Other versions are possible. It would also be conceivable to provide a stepless adjustment of the swivel arm 2 a.
- the rear swivel arm 3a is designed in two parts with an arm 3a 'and 3a "which are pivotally connected to one another via a joint 3b.
- the other end of the arm 3a" is pivotally mounted on the shaft 9 of the pliers frame 8 ,
- the arm 3a ' is fastened on the end, which lies opposite the joint 3b, to a clamping hub 32, which in turn is connected to the pliers shaft 10 in a rotationally fixed manner.
- the clamping hub 32 is made in two parts, the two parts being connected to one another via fastening means not described in any more detail, with the result that the rotationally fixed connection to the shaft 10 is produced at the same time.
- the drive of the tear-off cylinder 24, the round comb shaft 5 and the pliers shaft 10 corresponds to the drive of the embodiment already described in FIG. 1 and is therefore not explained in more detail here.
- the swivel arms 15 a, 15 b which are connected to the upper tong plate 14, are below the feed cylinder 27 pivoted about the axis 16 a.
- This arrangement makes it possible to easily install or remove the feed cylinder 27.
- a spring strut 18 a which is equipped with a compression spring F, engages via a joint 23.
- the other end of the struts 18a is pivotally mounted on an axis 34 which is fastened in the machine frame MG.
- the axis 34 is fastened to a bearing element 35, which in turn is detachably fastened to a holder 37 by means of screws 36.
- the holder 37 is fixedly connected to the machine frame MG.
- the connection between the bearing element 35 and the holder 37 is provided such that the bearing element 35, or the axis 34, is adjustable in relation to the holder 37, which was indicated by a double arrow.
- the axis 34 also being mounted so as to be adjustable in the vertical direction.
- This adjustability of the axis 34 enables the clamping forces at the pliers lip 13 to be adjusted, which are applied by the action of the spring force of the spring F.
- the adjustability of the axis 34 can e.g. the closing time of the pliers can be set. It is also possible to compensate for an adjustment of the ecartement (smallest distance between pliers lip and clamping point of the tear-off cylinder) by shifting the axis 34. This is to ensure that the "clamping force / pliers movement" ratio remains constant.
- the pliers 1 are pivoted back into a rear position, which is shown in FIG. 2, via the driven pliers shaft 10.
- the piston 39 of the spring strut 18a moves in the direction of the joint 23 and thus shortens the spring length of the spring F.
- the upper pliers plate 14 is brought into the closed position with the lower pliers plate 12, the spring force generated by the spring F. applies the clamping force in the area of the pliers lip 13.
- FIGS. 3 and 4 further examples for the drive of the two-part swivel arm 3a are shown in simplified form. In these simplified representations, individual parts have been omitted for reasons of clarity, as can be seen, for example, in comparison with FIG. 2.
- the pliers shaft 10 is driven directly by a separate individual motor M 1.
- the tear-off cylinder 24 and the round comb shaft 5 are driven, as already described in FIG. 2, via the drive connections 25 and 31, respectively, from a central transmission G.
- the gearbox G is driven by a main motor M, on the drive shaft of which an encoder EM is also arranged.
- the drive of the additional motor M 1 is controlled accordingly via the control unit ST, which is connected to the encoders EM, E 1. This means that the position of the angles of rotation of the drive shafts of the motors M, M 1 are coordinated with one another. This results in the pivoting movement of the pliers i
- FIG. 4 shows an arrangement, a cam plate 42 being used instead of the additional gear part G 1 in order to produce a discontinuous movement on the pliers shaft 10.
- the cam plate 42 is seated on a shaft 43 which is fixedly mounted in the machine frame and is in drive connection with the transmission G via the drive connection 45.
- the transmission G is driven by a main motor M, which is controlled by the control unit ST.
- the drive of the shaft 43 is continuous.
- a roller 46 runs on the cam plate 42 and is firmly connected to the pliers shaft 10 via an arm 47. The roller 46 is held in contact on the circumference of the cam plate 42 by means of a spring F 1.
- the two-armed lever 3a which transmits the drive to the joint 9 of the tong frame 8 via its joint 3b, is likewise fixedly mounted on the tong shaft 10.
- This embodiment shows a simple possibility for converting the continuous drive movement emitted by the transmission G into a discontinuous movement which is necessary for the reciprocating movement of the pliers 1.
- a similar drive arrangement can be found in the previously described DE-PS 231 797.
- FIG. 5 shows a further possibility of a drive arrangement for the pliers unit 1.
- An arm 52 is connected to the pliers frame 8 in a rotatable manner via a swivel joint 9. On the other end of the arm 52 this is rotatably mounted on an eccentric disc 50 via an eccentric 51.
- the eccentric disc 50 is driven by a motor M via a transmission G via the drive connection 45 shown schematically.
- the circular comb 4 and the tear-off cylinders 24 are also driven via this gear, as has already been described in the previous examples. It is also conceivable to provide other drive options.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Preliminary Treatment Of Fibers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH5752003 | 2003-04-02 | ||
PCT/CH2004/000124 WO2004088011A1 (en) | 2003-04-02 | 2004-03-03 | Drive for a clamping unit on a combing machine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1639162A1 true EP1639162A1 (en) | 2006-03-29 |
EP1639162B1 EP1639162B1 (en) | 2007-05-09 |
Family
ID=33102865
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04716526A Expired - Lifetime EP1639162B1 (en) | 2003-04-02 | 2004-03-03 | Drive for a clamping unit on a combing machine |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1639162B1 (en) |
JP (1) | JP2006522230A (en) |
CN (1) | CN1768172A (en) |
DE (1) | DE502004003779D1 (en) |
WO (1) | WO2004088011A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005056571B8 (en) * | 2005-11-25 | 2010-05-27 | Oerlikon Textile Gmbh & Co. Kg | Combing machine with rotary position drive |
EP2108722B1 (en) * | 2008-04-08 | 2011-02-02 | Maschinenfabrik Rieter Ag | Drive for nipper device of combing machine |
CH700285A2 (en) * | 2009-01-26 | 2010-07-30 | Rieter Ag Maschf | Drive device for detaching a combing machine. |
CH712606A1 (en) * | 2016-06-27 | 2017-12-29 | Rieter Ag Maschf | Device for a combing machine. |
CH714583A1 (en) * | 2018-01-23 | 2019-07-31 | Rieter Ag Maschf | Drive device for a combing machine. |
CH714581A1 (en) * | 2018-01-23 | 2019-07-31 | Rieter Ag Maschf | Drive device for a nipper unit of a combing machine. |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB856515A (en) * | 1957-06-07 | 1960-12-21 | Rieter Joh Jacob & Cie Ag | Means for supplying lap to the nipper mechanisms of textile combing machines |
EP0354456A3 (en) * | 1988-08-12 | 1991-01-09 | Maschinenfabrik Rieter Ag | Combing machine |
CH683847A5 (en) * | 1991-09-20 | 1994-05-31 | Rieter Ag Maschf | Controlled winding roller driving a comber. |
-
2004
- 2004-03-03 DE DE502004003779T patent/DE502004003779D1/en not_active Expired - Fee Related
- 2004-03-03 WO PCT/CH2004/000124 patent/WO2004088011A1/en active IP Right Grant
- 2004-03-03 JP JP2006504151A patent/JP2006522230A/en not_active Withdrawn
- 2004-03-03 EP EP04716526A patent/EP1639162B1/en not_active Expired - Lifetime
- 2004-03-03 CN CN 200480009040 patent/CN1768172A/en active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO2004088011A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2006522230A (en) | 2006-09-28 |
EP1639162B1 (en) | 2007-05-09 |
CN1768172A (en) | 2006-05-03 |
WO2004088011A1 (en) | 2004-10-14 |
DE502004003779D1 (en) | 2007-06-21 |
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