CN1138027C

CN1138027C - Nipper mechanism of combing machine

Info

Publication number: CN1138027C
Application number: CNB99108912XA
Authority: CN
Inventors: T・佐林格; T·佐林格; 窭锼固; T·斯格里斯特
Original assignee: Maschinenfabrik Rieter AG
Current assignee: Maschinenfabrik Rieter AG
Priority date: 1998-06-25
Filing date: 1999-06-24
Publication date: 2004-02-11
Anticipated expiration: 2019-06-24
Also published as: EP0967307B1; DE59905141D1; EP0967307A3; EP0967307A2; CN1241652A

Abstract

The nipper assembly (6,8,9,10) of a combing machine has a lower nipper frame (6) and a linked swing upper nipper frame (10), with a swing spring leg (12) on a pivot axis (A). The axis (A) has at least one gear stage (20) with out-of-round cogwheels (16,19) to shift the axis (A). The spring leg (12) swings on an eccentric (17), operated by a drive shaft (18) at the machine frame. At least one out-of-round cogwheel (16) of the gear stage (20) is keyed to the shaft (18). The gear stage (20) is linked to the drive shaft (4) of the nipper assembly (6,8,9,10) through a further gear stage (23), and to the main gearing (26) through a further gear stage, as the transmission from the main drive motor (27). The out-of-round input cogwheel (19) of the gear stage (20) and the output wheel (22) of the further gear stage (23) are both keyed to a common shaft (21). At least one gear wheel (22,24) of the further gear stage (23) has a release coupling with the drive shafts (4a,21).

Description

The nipper of combing machine

Technical field

The present invention relates to a kind of combing machine, it has the nipper group that is connected with drive unit of a swing, and this nipper group comprises lower nipper frame and the top nipper arm that is pivotably connected with it, and the latter is hinged on one respectively can be on the elasticity post of axle swing.

Guarantee that by this device nippers is mentioned from nipper plate when the nipper group is in the forward position in the combing separation process.In case nipper arrives rear positions, nippers is being pressed on the cotton inlet of nipper plate under the resilient force of elasticity post, and clamps by this regional lap in this position.Fiber that this clamped position stretches out from the nipper group must clump by being positioned at the circle comb combing below the nipper.The clamping force that acts in this course on the fiber must be soft as far as possible, in order to avoid cause damage.In addition, be necessary to apply enough clamping forces, make fibre bundle can obtain uniform combing in order that see along nipper group width.

Background technology

In hitherto known machine (the carding machine E7/6 of engineering works of Rieter company), an end bearing of elasticity post is on an eccentric wheel, and eccentric driving shaft is by the drive shaft of a transmission group by the descontinuous motion of nipper crank arm.Can obtain desired clamping force and desired nipper enable possition by means of this device.

Because high combing period (for example 350 combing circulation/minute), when opening and be closed, the nipper group produces very big acceleration and load on the supporting member.Therefore, especially in the time should reaching higher combing period, proposed a requirement, promptly the motion process of nippers also should be correspondingly adaptive, makes acceleration force can remain minimum of a value.But if adopt the device of being introduced only under the situation of making great effort and expending, could satisfy above-mentioned requirements.

In a patent application (DE-A 14216485) in the applicant's past, requiring with this is the starting point suggestion, and eccentric shaft Mechanical Driven so far replaces with Motor Drive.Adopt this device might make nippers by different curve movement adjustment or operation by correspondingly controlling drive motors now.In addition, adopt this device also might compensate " change of spacing between nipper and detaching roller " of clamped plate motion.

For guaranteeing the synchronism of drive motors and clamped plate motion, also relevant signal is transferred to the controller of motor here by means of the corner of sensor circle comb axle.

Adopt this device can realize the various adjustment possibilities of the nippers motion that real work needs.But confirmed already that this device was relatively more expensive and required accurately calibration, to monitor circle comb Shaft angle.In addition, whole system depends on the function and the life-span of monitoring sensor.

Summary of the invention

Therefore the objective of the invention is to invent a kind of equipment, it contains the advantage of the DE ' 485 that introduces to some extent, but cheap and a kind of driving possibility is provided, adopt this type of drive whenever can guarantee all that the motion of nippers moves with nipper plate and circle comb reliable synchronism is arranged.

Be to be used for moving this axle for reaching the measure that this purpose takes for each elasticity post sets at least one gear stage with noncircular gear around the axle of its swing.

A favourable suggestion is, the elasticity post is bearing in respectively on the eccentric wheel swingably, and eccentric wheel is by a drive shaft that is bearing in the machine frame, and wherein, at least one noncircular gear of above-mentioned transmission group is equipped with in rotation regularly on driving shaft.

Adopt this device of being advised, might implement a kind of nippers curve movement of the best according to designed gear shape with transmission group of noncircular gear.

It is also conceivable that with another same non-circular gear is replaced the transmission group that this has noncircular gear, so that when wanting material processed to change, can adapt to altered situation again.

Suggestion also, the gear stage with noncircular gear is connected with the driving shaft of nipper group by another (for example having circular gear) gear stage.Guarantee thus the motion of the motion of nippers and all the other nipper groups and also with the synchronism that rotatablely moves of circle comb because the drive unit of the drive unit of tongs plate axis and circle comb axle mechanically is connected to each other.

Also advised another kind of form of implementation, the gear stage that wherein has noncircular gear couples together in transmission by another gear stage and the main drive that is driven by main motor.Adopt this device different, can drive gear stage and make it to have continuous rotating speed with foregoing scheme.

Advise that also the non-circular input gear of gear stage and the output gear rotation of another gear stage are fixed on the same axis regularly.

In order to compensate the change of spacing between nipper and detaching roller, advise that at least one gear of another gear stage is by detachable connector and relevant driving shaft connection.

Even in the motion process of nippers, also can adapt to altered nipper terminal location thus.

Description of drawings

The embodiment that represents by means of accompanying drawing further specifies other advantages of the present invention below: accompanying drawing is represented:

Fig. 1 is by the signal vertical section of combing machine part combing head;

The sketch of Fig. 2 part shown in Figure 1 when diverse location;

Fig. 3 combing head nipper group aperture is with the change curve of nipper group position;

Fig. 4 and Fig. 1 dwindle with reduced graph accordingly and have represented nipper group additional drives part;

Fig. 5 has the input gear enlarged drawing of detachable connector by another gear stage of Fig. 4; And

Fig. 6 presses the side cutaway view of Fig. 5.

The specific embodiment

At Fig. 1, represented that its a part of combing head comprises 1, two detaching roller 2 of circle comb axle and 3 of rotation continuously in 2 and 4, but and the tongs plate axis 4 of a swing type rotation, they all are bearing in the machine frame that not have to represent.Tongs plate axis 4 supporting crank arms 5, the rear end of lower nipper frame 6 is hinged on the crank arm.On the bearing 7, the latter can support pivotally around circle comb axle 1 before the front end of lower nipper frame 6 was hinged on.Adorn a nipper plate 8 on the lower nipper frame 6, nippers 9 is cooperating with it.Nippers 9 is contained on the top nipper arm 10, and top nipper arm is connected with lower nipper frame 6 and can be around axle 11 revolutions.In addition top nipper arm 10 be hinged on one respectively can be on the rotating elasticity post 12 of axle A.By the swing type rotation of tongs plate axis 4, make lower nipper frame 6 reciprocating motion between preceding terminal location shown in Figure 1 and back terminal location.In Fig. 2, schematically illustrate preceding terminal location, schematically illustrate the back terminal location with fine rule with heavy line.At back terminal location elasticity post 12 the nipper group is remained on closing position, that is to say that it presses to the lower limb of nippers 9 by top nipper arm 10 leading edge of nipper plate 8.So clamping fiber from the lap (not shown) of wanting combing between these two edges must clump, it is by a circle comb section 13 combing, and 13 of circle comb sections are fixed on the combing roller 14 (combroll) that is contained in the circle on the circle comb axle 1.

At the preceding terminal location of

nipper group

6,8,9,10, elasticity post 12 keeps the nipper group to be in opening, that is to say that elasticity post 12 makes nippers 9 upwards leave nipper plate 8 by top nipper arm 10.Must clump separate with lap on staying nipper plate 8 through the fiber of combing by detaching roller (detaching roll) 2,3.

Be bearing in the lower nipper frame give cotton roller (feed roll) 15 (Fig. 1, Fig. 4) be used for will combing lap when the nipper group is opened, continue one section of conveying.Give the rotation of cotton roller can be, when

nipper group

6,8,9,10 is opened and/or be closed, just during lower nipper frame 6 travels forward and/or backward between moving period, do gyration by top nipper arm 10 with respect to lower nipper frame 6 and produce by traditional mode.The gyration of top nipper arm 10 for example passes to cotton roller 15 by ratchet, freewheel or template (not shown).For setting a gear stage with

noncircular gear

16,19, gyroaxis A (Fig. 1) is used for moving this A.Gyroaxis A is the axis of eccentric wheel 17 in this case, and eccentric wheel is contained on the axle 18 that is bearing in the frame, this on 18 also rotation the gear 16 of gear stage 20 is installed regularly.Elasticity post 12 is bearing on the eccentric wheel 17 swingably.A gear 22 is installed in rotation regularly on the power shaft 21 of gear stage 20, and it and another gear 24 mesh.This gear stage with

gear

22 and 24 means it is another gear stage.Only part and schematically having represented is in the tooth of the noncircular gear of engagement in Fig. 1.

Fig. 1 has represented that two kinds of gear stage 23 input gears 24 drive possibility.The driving line V that represents with chain-dotted line represents that power shaft 4a can overlap with the driving shaft 4 of nipper group.That is to say that driven wheel 24 is fixed on the axle 4 of nipper group coaxially.Do not implement a kind of intermittent motion (moving forward and backward) because axle 4 does not rotate whole circle,, be used for intermittent motion is passed to driven wheel 22 so 24 designs of driven wheel might there be local tooth section.

Gear drives among the possibility figure for 24 second kinds and dots, and wherein, driving shaft 4a is connected with main drive 26 by driving jockey 29, and the latter is connected with main motor 27 by driving jockey 30.The advantage of this second kind of scheme is to make driven

wheel

16,19,22 and 24 can implement continuous rotary motion, consequently the wearing and tearing that reduce gear is brought active influence.In the scheme of this continuous motion, driving shaft 18 should suitably mate with respect to the position of eccentric wheel 17, to obtain the ideal movements curve (Fig. 3) of desired nippers 9 motions.

Fig. 4 has represented a kind of crank driving mechanism in the view that dwindles, it impels driving shaft 4 reciprocating motions of the crank arm 5 of nipper.This crank driving mechanism is mainly by forming around the crank disc 42 of a driving shaft 41 rotations.By the rotatably hinged push rod 43 of crank-pin 44, it inserts in the guide member 45 on crank disc 42, and guide member 45 rotations are connected with axle 4 regularly.

Process different fibre length (average fiber length) for this system is adapted to, in the time of must correspondingly changing the nipper group and be in the most forward position at the bite of detaching

roller

2,3 and give distance between the bite between cotton roller and the nipper plate 8.This distance is called spacing (separate and space) between nipper and detaching roller.Also determined the most forward position of nipper plate 8 by this distance with respect to detaching

roller

2 and 3 bites.This is apart from schematically illustrating with E and E1.Distance is changed into E1 by unclamping guide member 45 and making it to rotate a certain angle with respect to tongs plate axis 4 that α reaches from E.After doing this rotation, rebulid to rotate between axle 4 and the guide member 45 and be fixedly coupled.Adjust the motion that has also changed nippers 9 by this, it is subjected to the influence of nipper plate motion.In order to set up original movement relation again between nipper plate 8 and nippers 9 now, suggestion (Fig. 5) makes driven wheel 24 rotate with respect to driving shaft 4a.As especially also can being found out by Fig. 6, rotation is with a ring 33 regularly on axle 4a.Ring 33 is shaped on flange 34 and has gear 24.Gear 24 is shaped on three grooves 36, wherein respectively inserts a screw 35, and screw is screwed in the screwed hole 40 of ring 33 flanges 34.That is to say that gear 24 also thereby with axle 4a couples together with ring 33 regularly by screw 35 rotations.In order to compensate the angle [alpha] that guide member 45 is adjusted, unclamp screw 35 and implement adjustment now according to predetermined scale 48.This adjustment amount is selected according to predetermined table, should represent by means of adjusting angle α by the adjustment that scale 48 carries out in table.Be expressed as and adjust angle α just as a kind of example, usually, the adjustment of guide member 45 can be carried out with 48 scales of representing by means of a kind of for example being similar to equally.

Rotate the thought that the rotation angular position just can compensate the variation of spacing between nipper and detaching roller by the axle that driven wheel is supported on it with respect to it, also can be applied in the design of not adopting noncircular gear.

Because illustrated structure, people obtained a kind of economy with the device that can adapt to nippers 8 motion processes reliably.

Claims

1. combing machine, the nipper group that is connected with drive unit (6,8,9,10) that a swing is arranged, the top nipper arm (10) that this nipper group comprises lower nipper frame (6) and is pivotably connected with it, the latter is hinged on one respectively and can it is characterized by on the elasticity post (12) of axle (A) swing: axle (A) sets a gear stage (20) with noncircular gear (16,19) at least and is used for shifting axle (A).

2. according to the described combing machine of claim 1, it is characterized by: elasticity post (12) is bearing in respectively on the eccentric wheel (17) swingably, eccentric wheel drives by a driving shaft (18) that is bearing in the frame, rotates the noncircular gear (16) that a gear stage (20) is housed regularly on this driving shaft (18) at least.

3. according to the described combing machine of one of claim 1 to 2, it is characterized by: gear stage (20) is connected with the driving shaft (4) of nipper group (6,8,9,10) by another gear stage (23).

4. according to the described combing machine of one of claim 1 to 2, it is characterized by: gear stage (20) couples together in transmission by another gear stage and main drive (26), and the latter is driven by main motor (27).

5. according to the described combing in one of claim 3 or 4, it is characterized by: the non-circular input gear (19) of gear stage (20) and the rotation of the output gear (22) of another gear stage (23) are contained on the same axis (21) regularly.

6. according to the described combing machine of one of claim 3 to 5, it is characterized by: at least one gear of another gear stage (23) (22,24) is by detachable connector (35) and relevant driving shaft (4a, 21) connection.