JPS5841945A - Circular flat knitting machine for producing knitted product due to comber fiber - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a circular flat knitting machine for producing knitted products using combed fibers, and the circular flat knitting machine is provided with at least one carding device for combing the fibers. The device includes a support belt having a section pierced by a needle and provided with a card.

Regarding circular flat knitting machines for producing knitted products with combed fibers, due to the special problems caused by the use of card wheels,
Soft clothing or support belts with wire hooks on the outside are wrapped around these card wheels, the width of these belts being considerably smaller than the width of the card wheels measured in the direction of the axis of rotation (German Patent Application No. P3, 02'l
, 96.2).

These supporting belts are wound helically around the surface of the card wheel, with a number of turns and a slope depending on their width and the diameter of the card wheel, and are fixed there by screws or adhesive.

Since it is difficult to wrap card wheels purely manually, devices such as those mentioned in the introduction have already been disclosed or proposed, which mechanize and simplify the operation of wrapping card wheels. When applying these devices, the support belt is guided manually or mechanically and is simultaneously pressed against the previously wound part. The use of auxiliary devices makes it possible to determine the initial slope and to take into account tolerances in the width of the support belt.

However, even when this type of device is applied, it has not been possible to eliminate the problem of uneven formation, which appears in the finished knitted fabric due to uneven distribution of fibers1 and seriously deteriorates the quality of the fabric. there were.

SUMMARY OF THE INVENTION The object of the present invention is to avoid undesirable fiber distribution irregularities in knitted products made of combed fibers, and to provide a circular flat knitting machine for producing knitted products free from the drawbacks caused by combed fibers.

In order to solve the above problem, the circular flat knitting machine mentioned at the beginning,
It is characterized in that the section of the support belt that includes the card wheel has a constant width over the entire circumference of the stripping roller.

Other advantageous features of the invention will become apparent from the claims.

The present invention provides that very significant advances in uniform fiber distribution in finished knitted fabrics can be achieved by relatively simple modifications to the card wheels conventionally used in circular flat knitting machines for producing knitted products from combed fibers. Contains surprising discoveries.

It has long been hypothesized that undesirable fiber distribution irregularities, particularly intermittent spiral patterns, are caused by the spiral winding of the relatively narrow support belt on the card wheel; It has been found that by using the card wheel according to the invention, the unevenness can be almost completely eliminated, or at least to such an extent that this type of fiber distribution unevenness cannot be discerned with the naked eye.

This surprising effect is attributable to the following facts. That is, with the cardwheel according to the invention, each needle always traverses exactly the same distance within the clothing, and therefore always the same amount, regardless of which area of the cardwheel it passes through to pick up the fibers. The fibers of the fibers are collected.

The invention will now be described in detail with reference to preferred embodiments and in conjunction with the accompanying drawings.

According to FIG. 1, the known circular flat knitting machine for pattern knitting/manufacturing using combed fibers has a base, in which a needle cylinder 5 with bar needles S and a sinker ring 9 with a sinker 7 are provided.
is rotatably supported.

The needle 3 and the sinker 7 are controlled by cams in the usual way,
Several knitting mechanisms are provided at intervals around the needle cylinder, and each mechanism has a handle device //, whereby each bar needle 3 is selected according to the handle to spread or not spread the horizontally thin. or

Furthermore, each knitting machine has a carding device 7.2, which is fixed to the frame/g and feeds fibers with a certain property, for example color, to selected needles for picking up the fibers. Each carding device/2. For example, a tambour or carding drum 15 with a clothing 16 to which the fibers are fed in the form of slivers 17 by a pair of feed rollers/g and a carding drum 15 with a needle 3 selected to pick up the fibers. It consists of a dosing roller or combing roller/9 with a cloth roller which provides the stripped fibers. The combing point is located where the needle 3 passes through the clothing J/ on a running path running substantially parallel to the axis of the doff roller /q.

The drive device 23 for the feed roller 1g is controlled by the control device 25 so that fibers averaged into relatively short units are sent from the carding drum/S to the combing roller 19 in an amount necessary for the pattern.

In order to eliminate uneven distribution of the fibers fed onto the dosing roller 19, it is possible to attach a homogenizing roll to the dossoff roller.

Circular flat knitting machines such as those mentioned above can be used, for example, in the West German patent specification No. 1,20/,! fOq and West German Application Publication No. 2. //! ,? 21. 2nd, 3rd. '13゜ggb, 2nd
．． ! 2'l, da 91 and co, 79g, 9'lI, to which reference is expressly made.

2 and 3 each show a card wheel 27 with a collar of 2g. A cover 29 is wound helically around the card wheel core with a twist angle α, and this cover is arranged in a conventional manner, for example, by a fiber support belt 30 and a card or metal fitting built into this support belt, such as a wire hook 31. Consists of. The starting position of the support belt 30 is fixed by 2g and fixed by the screw 32, and the ending position of the force support belt 30 is fixed by the screw 33.
is fixed by

Reference numerals 3q and 3S designate the uncovered zones of the surface of the card wheel 27, which are removed during conventional winding using a support belt 30 having a constant width. Since the wire hooks 31 are uniformly integrated over the entire surface of the support belt 30, the position of the wire hooks 31 on the surface of the card wheel 27 exactly corresponds to the arrangement of the support belt 30. The support belt 30 is denoted by the reference symbol 36 in FIG.
It represents a typical wave caused by zero turns. These waves are the result of tolerances in the width of the support belt 3θ during winding or non-uniformity due to other reasons, and have negative consequences for the fabric produced.

In contrast, FIG. 3 shows a wire hook 3/3 that is wound with ideal uniformity and has a substantially wave-free winding course.
A card wheel 27 characterized by a correspondingly uniform arrangement of
It shows. Windings of this type are formed by using the apparatus described in a previous application by the same applicant, P, 3,02'l, 9A2.

FIG. 1 shows a card wheel 37 according to the invention in the form of a dosing roller which can be used, for example, as dossifying roller/9 in FIG.

Card wheel 3 has wire thick 3g cloth 3
9 is wound. However, the wire hook 3g
It is located only on a section of support belt 3q with a constant width (b). The widthwise edges qo of this section are parallel not only to each other but also to the end surface of the card wheel 37, which end surface is parallel to the card wheel 3.
It is arranged in a plane perpendicular to the rotation axis indicated by the broken line 7.

Correspondingly, FIG. 5 shows a card wheel q3 according to the invention in the form of a carding drum, which can be used, for example, as carding drum/S in FIG. The card wheel lI3 has a clothing, and the clothing of
It has a support belt q with wire hooks qs in sections having a constant width (1) throughout.

The widthwise edges 6 of the section provided with the wire hooks are not only parallel to each other, but also parallel to the end surface q7 of the card wheel q3, and this end is aligned with the rotation axis lIg of the card wheel q3, indicated by a broken line. It extends parallel to an imaginary plane that is perpendicular to the object.

As is clear from Figures 1 and 2, the wire hook 3g or the section containing the box first has a supporting belt 3q or a support belt 3q whose width is narrower than the width of the card wheel 37 and q3 compared to the width of the card wheel. form hX by wrapping the support belt around the card wheel 37 and beam 3 in a manner similar to that shown in FIG. In this regard,
The procedure may follow either FIG. 246 or FIG. 3.

Subsequently, the wire hooks or metal fittings designated by reference numbers 3g and +1 in FIGS. 9 and S are removed from the outer edge of the support belt 39 or glue p in the following manner.

That is, the widthwise edge tio or da 6 of the remaining section of the support belt 39 or vp, to which the wire hooks 3g, 1 are still attached, is connected to the axis of rotation tI2 or r.
It extends along a peripheral edge located in a plane perpendicular to ig.

Removal of extra wire hooks or metal fittings 3g, qs is as follows:
This can be achieved, for example, by scraping off the fittings with a grinder, so that the support belts 39 or ribs of these garments are oriented as can be seen in FIGS. 72 and S, and the screws q9 and is fixed in that position by SO. Alternatively, the support heald 39, ++ can be fixed by gluing to the card wheel 37 or qs, and then the excess wire hook 3g or l/, S as well as the associated section of the support belt 39 or 41 da can be removed. It is also possible to cut the support belt along a circumferential line extending perpendicularly to the rotation axis q2 and dag. This extra wire hook or metal fitting 3g,
The method of removing the box does not have any noticeable effect on the quality of the knitted fabric produced with the cardwheel according to the invention.

A further possibility for producing a card wheel according to the invention is to use an enclosure or tube wheel already provided with a pre-shaped section 1ji of constant width (b), including the wire hook 57, according to FIG. There is a method of providing it on the card wheel SS. This method has the advantage that the card wheel only needs to be removed from the circular flat knitting machine for a very short time when changing the clothing. Card wheel with surrounding tiles! The fixing to S can be carried out by surface shrinkage, gluing, screwing or other methods.

Finally, FIG. 7 shows yet another embodiment of the invention,
In this embodiment, the wire hooks 5g are formed on the endless support belt 39, which is also provided on the card wheel as a whole.

Again, the width (b) of the section including the wire hook 55 is constant, and the widthwise edge of this section is
Extends in a plane arranged perpendicular to the axis of rotation of the card wheel.

The advantages gained by the invention are indicated by dashed lines in FIGS. 9 and S, and are shown in FIGS.
This is particularly due to the travel path 60 and AI, which refers to the travel path of the needle during the passage of s. Regardless of the position of these tracks on the circumference of the card wheel, the length of these tracks is always the same, as long as the angle between the track and the axis of rotation of the associated card wheel does not change. From this it may be concluded that each needle passing through the card cover also picks up substantially the same amount of fiber.

The invention is not limited to the preferred embodiments described, but may be modified in various ways. For example, since the course of the end faces of the card wheel has no effect on the distance traveled by the needle in the clothing, there is no jacket whose end faces extend parallel to the widthwise edges of the card cover. moreover,
It is also not necessary that each widthwise edge of the section containing the wire hooks be spaced the exact same distance from each other at all points along the circumference of the card cover. This is because small deviations, which are essentially the same as conventional observation tolerances, do not significantly affect the uniformity of the fiber fabric (fiber combing). Furthermore, it is not important to scrape off the wire hooks or cut their support belts so that the width (b) shown in Figures 1 and 2 is less than the width of the card wheel. In fact, it is also possible to first provide the clothing with a width that is greater than the card width and then to carry out cutting or grinding operations such that the width (b) is substantially equal to the width of the card wheel.

Furthermore, the distance that the bar needle passes within the clothing is 60mm and 61mm.
The length of the card wheel is determined in particular by adjusting the rotational speed of the card wheel, and the width (1) and the angle between the rotation axis of the card wheel and the needle travel path are determined so that this travel path is widened by the needle. It is an M effect to determine the 1-recording distance by determining it to match the maximum amount of fiber that will not occur. By doing so, it is possible to avoid excess fibers from accumulating on the hooks of the bar needles and falling onto the mj hands, which would adversely affect the fiber distribution of the knitted fabric.

Finally, the width (b) of the section containing the wire hook is selected with particular advantage in the following way.

That is, the width of said section should be greater in the case of the carding roller than in the case of the carding drum, and less than the distance that the needles travel back and forth at the combing point to their raised position suitable for picking up the fibres. do. However, the width of the section of the feed roller containing the wire hook should be smaller than the width of the corresponding section of the carding drum.
Furthermore, if the embodiments according to Figures 1 and 5 are modified, a relatively long support belt is not wound helically around the surface of each card wheel, but individual strips of support belts arranged in parallel are used. It is possible to coat a surface part, the length of this strip corresponding to the length of this surface part.

However, in this case care must be taken to arrange these strips so that the wire hooks are offset from each other in the conventional manner for carding devices of this type.

Finally, the present invention is not limited to the above embodiment in which the widthwise edge of each section containing the wire hook is arranged perpendicular to the card axis. In fact, the edges in the Q'i'M direction, which are arranged obliquely to the card axis and parallel to each other, also have running paths 60 or There is one leading to each section that is of equal width in the sense of going back and forth.

[Brief explanation of the drawing]

FIG. 1 shows a circular flat knitting machine with a known structure, and FIGS. 2 and 3 each show a nonode wheel on which clothing is spirally wound by a known or previously proposed method.
FIG. 9 shows a dosing roller according to the invention, FIG. 1 shows a card wheel according to the invention, around which the clothing is wound in the form of a belt; /...Pattern knitted fabric a...Base 3...Standard needle S...Needle cylinder? -・Shinka? '−・Thinkering
/l...Pattern device /2...Carding device a i
q-・Frame /3・・Carding drum 16・・
Clothing 17...Sliver 1g...Feed roller /9...Dosing roller 21...Clothing cloth 3...
Drive device CoS...Control device 26...Homogenization row 2 27...Card wheel 2g-1 boxwood 29
...Card cover 30...Support belt 3/...Wire hook 32.33...Screw 3q, 35...Uncovered band 3O...Wave,? ? --Card wheel 3g--Wire hook 3q-・Support bell 1-
lIo... Width direction edge Da/... End face Dako...
・Rotation axis q3・・Card wheel・・Support belt ・Fist wire hook Care Aha Width direction edge Gua 1I・End face tig・・Rotation axis Da 9.50・・Screw
SS・Fist Card Wheel 56 Intimidation・Tube 5
7.Wire hook Sri...Endless support bell l-60
, 4/-・Traveling road patent applicant Zurza Morato G.M.B.A. representative Masaji Suzuki~・1

Claims (1)

[Claims] l A device for combing fibers, consisting of at least one carding device having a dosing roller, through which the needles pass, and which is provided with a cloth having a section with carded wires, for combing the fibers. A circular flat knitting machine for producing knitted products, characterized in that the section of the clothing (39, 1I9, 59) has a constant width (bl) along the entire circumference of the doff roller (37, 1Ij, 55). Circular flat knitting machine λ The circular flat knitting machine according to claim 1, wherein the carding device further includes at least one carding drum and a pair of feed rollers.
Both the carding drum (15) and preferably the feed roller (tg) are connected to the card wheel (37, q3,
SS), wherein the carding drum includes card wires (3g1, n, sg) and has a full circle of card wheels (37, lIj, ss) . 3) each comprising at least one pair of feed rollers, a carding drum, a dosing roller and an additional roller optionally provided with clothing; In the circular flat knitting machine described in any one of the items, the roller (/
s, 7g, /q, ag) are all card wheels (37
, lIj, ss), containing the card wheel and having a clothing with a section having a constant width (bl) along the entire circumference of the card wheel (37, da 3, ss). The circular flat knitting machine characterized in that: q The circular flat knitting machine according to any one of claims 1 to 3, wherein the width of the section with the card wire of the doss far roller is equal to the width of the card of the carding drum. greater than the width of the section with wire, but smaller than the running path through which the needles pass at the combing point in their raised position suitable for "unfolding" the fibers, and the width of the section with card wire of the foot rollers; Said circular flat knitting machine, characterized in that the width is smaller than the width of the section with carded wires of the carding drum.