CN1329568C - Attachment for an opening, grading or combing device on textile machinery - Google Patents

Abstract

The invention relates to an attachment for an opening, grading or combing device on textile machinery, such as for example a circular comb, top comb, card, spinning machine or similar, comprising a number of needles or saw-tooth punching parts, which execute an opening, grading or combing movement in relation to a fibre band. The invention is characterised in that a movement of at least one part of the needles (7) or saw-tooth punching parts (12) is superimposed on the opening, grading or combing movement, with at least one component moving perpendicular to said opening, grading or combing movement.

Description

Card clothings for opening, classifying or combing units on textile machines

technical field

The invention relates to a card clothing (Garnitur) for opening, classifying/sorting (Sortieren) or combing devices on textile machines such as circular combs, top combs, carding machines, spinning devices, etc. There are multiple needles or serrated blankings that include the action of opening, grading or combing the sliver.

Background technique

This fabric opening, grading or combing device is used for the parallel action of wool or cotton slivers and for the removal of impurities present therein.

The quality of the final product is greatly influenced by the quality of the combing process, so there are numerous ways to further improve the combing result.

In order to improve the properties of the parallel action, in particular work is carried out with such a configuration of needles and serrated blanking parts as well as their positioning and dimensioning relative to each other.

Another problem is that the combing unit loses its efficiency significantly due to the particles that are combed out and become lodged in the combing unit. In order to achieve an optimal parallel action, it is desirable to increase the density of the needles or the saw-toothed blanks as much as possible, but this also significantly increases the risk of particle adhesion and a reduction in the combing efficiency.

There are therefore also numerous methods for removing adhering particles from combing units, wherein in particular mechanical cleaning devices such as brushes or cleaning blades are used. Of course, this has the obvious disadvantage of wearing the needle and the serrated blank due to the mechanical contact. Therefore, the use of an air cleaning device, in particular for top combs, brings about significant improvements.

Contents of the invention

Therefore, the object of the present invention is to design a combing device of the kind mentioned at the outset in such a way that the combing result is further improved in such a way that on the one hand a gentle penetration is achieved and on the other hand a good combing effect is achieved, while at the same time It should also prevent the combed particles from staying in the combing unit.

This object is achieved according to the invention by a card clothing for an opening, classifying or combing device on a textile machine, which card clothing comprises a plurality of needles or teeth for the opening, classifying or combing movement of the sliver shaped blanking part, wherein at least part of the movement of the needle or sawtooth-shaped blanking part with at least one component perpendicular to the movement can be superimposed on the movement in such a way that the superimposed movement piezoelectric Ground, electromechanical or via an eccentric. The drive of the eccentric is derived from the drive of the opening, classifying or combing device or can be realized by an electric motor.

Through a superimposed movement, in particular an oscillating movement, perpendicular to the direction of movement of the sliver and in the clothing plane (Garniturebene), the penetration of the combing unit into the sliver or vice versa is significantly improved and becomes more Flattened to be able to work with greater (needle) point density and improved penetration angle, the clothing plane is the plane or surface formed by the needles and the tips of the serrated blanks. At the same time, vibration in this direction can also change the relative spacing of adjacent needles or saw-toothed blanks in order to remove adhering particles.

By means of a superimposed movement, in particular an oscillating movement, in a direction perpendicular to the direction of movement of the sliver and perpendicular to the tip face of the needle or saw-toothed blank, a movement in particular towards the tip, i.e. away from the adjacent needle, can be achieved. Or the conveying movement in the direction of the matrix part between the saw-tooth blanking parts, which can promote the detachment and separation of adhered particles.

In order to simultaneously achieve a gentle penetration of the sliver and removal of adhering particles, two mutually perpendicular motion components can be superimposed.

Advantageously, the superimposed movement of the needles or the saw-toothed blanks is realized piezoelectrically, electromechanically or via an eccentric, wherein the drive of the eccentric is derived from the drive of the opening, classifying or combing device or can be Realized by motor.

In a preferred embodiment, one part of the needle or the sawtooth-shaped blanking part is designed to be fixed, while the other part is designed to be movable for superimposed movements.

The needles or the saw-toothed blanks are mounted vibratingly relative to the respective carrier, so that they can be excited to self-excited vibrations.

According to a further embodiment, it is preferably envisaged that the needle or the saw-toothed blanking part performs a movement in the manner of an oscillating conveying device substantially in the direction of its tip, which movement can in particular be realized in such a way that a The to-and-fro vibrating motion performs a sudden braking when it is in the phase of motion towards the tip and a gentle braking in the opposite direction, so that the particles due to their inertia are transported in the direction towards the tip and thus leave the The working area of the card clothing.

Description of drawings

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention will be described in detail below by means of preferred embodiments with reference to the accompanying drawings. in:

Figure 1 schematically shows a saw-toothed blanking part of a circular comb - card clothing, wherein the first section is vibratingly mounted, viewed in the carding direction,

FIG. 2 shows a view corresponding to FIG. 1, wherein the two first sections are mounted vibrately, viewed in the carding direction;

Figure 3 schematically shows a top comb with particles;

Figure 4 shows a view corresponding to Figure 3 for displaying transverse vibrations;

FIG. 5 shows a view corresponding to FIG. 3 for displaying outwardly directed vibratory movements;

Figure 6 schematically shows another embodiment in a cleaning position;

Figure 7 shows the embodiment according to Figure 6 in the normal position;

Figure 8 shows the superimposed vibratory motion according to Figures 1 and 2;

Figure 9 shows a needle hub;

Fig. 10 shows a needle holder on which needles are fixedly arranged;

Figure 11 shows another embodiment of a needle bar formed by the needle hub and the needles arranged thereon;

Figure 12 shows a preferred embodiment of a hub; and

Fig. 13 shows the needle hub shown in Fig. 11 before the needle is fixedly mounted.

Detailed ways

FIG. 1 shows schematically a clothing 1 of a circular comb, not shown elsewhere, which consists of a plurality of segments 2 , 3 , 4 , 5 . The circular comb rotates in the direction of the arrow 6, wherein the sliver 7 to be combed is indicated by an arrow with a corresponding reference number.

The first section 5 shown in the carding direction, ie firstly penetrates into the sliver 7, is drivably mounted vibratingly in a direction perpendicular to the carding direction (corresponding to arrows 6 and 6'), ie said section 5 An oscillating movement in the direction of arrow 8 perpendicular to the plane of the drawing and an oscillating movement in the direction of arrow 9, ie in the radial direction with respect to the center of rotation of the circular comb, are possible.

In the exemplary embodiment according to FIG. 2 , not only the first section 5 shown in the carding direction, but also the second section 4 are vibratoryly drivable in a manner corresponding to that described with reference to FIG. 1 .

The resulting vibration is illustrated in FIG. 8 , where the X-direction of vibration corresponds to the direction of arrow 8 and the Y-direction of vibration corresponds to the direction of arrow 9 , where by superposition of this vibrational movement, each section 5 or 4 The tip 10 of the tooth 11 of each sawtooth-shaped blanking part 12 makes an elliptical vibratory movement.

Via the vibration or vibration component in the direction of arrow 8, a gentle and smooth penetration action can be achieved, whereas the vibration or vibration component in the direction of arrow 9 ensures that the accumulated particles are moved in the direction towards the tip 10 and by This causes it to leave the clothing.

FIG. 3 shows a card clothing, for example a top comb 14 , comprising needles 13 in which a particle 15 is deposited. By means of an oscillating movement in the direction of the arrow 16, ie in the longitudinal direction of the needle 13, the particles 15 are loosened and pushed outwards.

It is shown in FIG. 4 that by means of an oscillating movement along arrow 17 , the needles 13 jointly oscillate perpendicularly to their longitudinal extent, so that a smooth entry into the sliver is achieved.

In the embodiment shown in Figures 3 and 4, all needles 13 of the card clothing 14 vibrate together, while in the embodiment shown in Figures 5 to 7, the first part of needles 7a is designed to be fixed, while the second part of needles 7a 7b is displaceable opposite it in the direction of arrow 18, ie in its longitudinal direction.

Unlike the embodiment shown in FIG. 5 , it is envisaged in the embodiment shown in FIGS. 6 and 7 that the movable needle 7 b has a shoulder 19 such that when the needle 7 b is lifted in an outward direction, said shoulder 19 It is also lifted and reliably transports the particles located there upwards. FIG. 6 here shows the raised cleaning position, while FIG. 7 shows the lowered normal position.

The mobility of the serrated blank 12 according to the invention and in particular of the needle 7 requires a particularly secure fixation of said needle on the needle holder. The fastening technique shown in Figures 9 to 13 can also be advantageously applied to non-movable card wires.

FIG. 9 shows a needle holder 20 made of a material (cold flow material) which is cold-deformable under pressure (cold flow material), in particular aluminum, which has a groove 21 .

As shown in FIG. 10 , the needles 7 c are first inserted and aligned in this groove 21 in a purely form-fit manner, where a material extrusion is then effected cold-deformed by means of two rollers by forming the grooves 22 on the end faces 23 of the needle holders 20 . Press, so that the head 24 of the needle 7c is fixed in the groove 21 not only in a form-fitting manner but also in a force-fitting manner.

FIG. 11 shows a finished needle shank 25 , in which the pressure rollers do not act from the front side but from the side when forming the groove 26 and thereby fix the needle head 24 .

FIG. 12 shows an exemplary embodiment corresponding to FIG. 9 of a needle bar with a groove 21 having a rectangular cross section, which is suitable for applying the fastening technique according to FIG. 11 .

Figure 13 shows an alternative embodiment, wherein the groove 21a is designed to be wedge-shaped/dovetail-shaped in cross-section, so that the arrangement of the head 24 of the needle 7c can ensure that the needle 7c will not fall out downwards.

Claims (9)

1. A card clothing for opening, grading or combing devices on textile machinery, the card clothing includes a plurality of needles or zigzag blanking parts for sliver opening, grading or combing motion, its characteristics In that, a movement of at least a part of the needles (7) or serrated blanks (12) having at least one component perpendicular to the opening, grading or combing movement can thus be superimposed on the opening , grading or combing movement, that is, the superimposed movement is generated piezoelectrically, electromechanically or by an eccentric wheel. 2. Card clothing according to claim 1, characterized in that the card clothing is used for opening, classifying or combing devices on circular combs, top combs, carding machines, spinning devices. 3. Card clothing according to claim 1, characterized in that the drive of the eccentric is derived from the drive of the opening, classifying or combing device or can be realized by an electric motor. 4. Card clothing according to claim 1, characterized in that one part of the needles (7) or the saw-toothed blanks (12) is designed to be fixed, while another part is designed to be drivable for superimposed movements. 5. Card clothing according to claim 1, characterized in that the needles (7) or the saw-toothed blanks (12) are mounted vibratingly relative to the respective carrier. 6. Card clothing according to claim 1, characterized in that the needles (7) or the saw-toothed blanks (12) are carried by means of an oscillating conveying device substantially in the direction towards their tips (10). exercise. 7. Card wire according to claim 6, characterized in that a to-and-fro oscillating movement is abruptly braked when it is in the movement phase towards the tip (10) and gently braked in the opposite direction. 8. Opening, classifying or combing device comprising a card clothing according to any one of claims 1 to 7. 9. Needle bar for a card clothing according to any one of claims 1 to 7, comprising a needle holder and a plurality of needles arranged in alignment on said needle holder, characterized in that said needles (7c) are fixed in such a way that , that is, first insert the head of the needle (24) into a groove (21) in a form-fitting manner, and then press the needle seat (20) from the side or end, due to the cold deformation of the cold flow needle bar seat material Secure the needle.

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