JPS6366327A - Carding apparatus - Google Patents

Abstract

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

Description

[Detailed description of the invention] ・(Industrial application field) The present invention relates to a carding device.

(Conventional technology and problems) The basic structure of carding devices is well known.

It comprises a take-in, a clothed main cylinder for receiving the fibers from the take-in, a docker for stripping the web of fibers from the main cylinder, and a first arc of rotating cylinders from the take-in to the doucha. within the scope of the present invention, carding means are provided in the vicinity of the main cylinder for cooperation with the clothing on the main cylinder, and a device for stripping the carded web from the docker.

In this basic construction, flats with different carding surfaces that modify the formation of the clothing on the main cylinder and cooperate with the clothing on the main cylinder are used in a stationary or You can choose whether to use a movable type, as well as the configuration of the Tekine and its related supply equipment,
Variations in the configuration of the docker and its associated stripping and conveying equipment are possible.

In addition to the single card explained above, there are so-called double cards (
duocard) is also known. In that case, after the breaker pick-up line, the main cylinder and the docker, a finishing take-in line, the main cylinder and the docker are provided,
The material is transferred from the breaker docker to the finishing pick-up line by means of a suitable transfer device in the center of the card.

In all carding machines, efforts are constantly being made to improve the quality of the card web and the sliver formed therefrom.

The purpose of carding, in addition to conditioning the fibers, is to remove short fibers, dirt, and dust from the raw cotton or other feedstock, and both operations can be accomplished with a degree of efficiency by currently available carding equipment. Apart from that, it is being done.

A problem encountered in the carding process is the formation of neps. Neps are small clumps of fibers, or tangles of fibers, that, if scraped from the main cylinder by the dower, can find their way into the dower web and into the sliver formed therefrom.

Neps are undesirable because they impair the homogeneity of the sliver.

(Object of the Invention) An object of the present invention is to provide a carding device that can prevent the formation of neps.

(Summary of the Invention) The present invention provides a carding device having the above-mentioned basic structure, in which the cover means is provided over a part of the second arc-shaped portion of the rotary cylinder from the docker to the take-in. , characterized in that the cup is provided with a carding element capable of cooperating with the clothing of the main cylinder over at least a part of the second arc during the carding action.

In conventional carding devices, this is generally the lowest arc of the cylinder. The second arc of the rotating cylinder from the doffa to the take-in is usually an opening through which short fibers, dirt and dust emitted from the material conveyed on the cylinder surface pass through and are retained as debris. Covered by a coarse grid or screen.

The grid, or screen, is typically approximately coaxial with the cylinder surface and has at least 0.
76 mm, usually more than 1 mm, from the envelope of the clothing tip. In conventional cards, it is in this area that neps are formed, and the cause of their formation is when the fibers come into contact with the grid or screen and are lifted out of the clothing.

It is thought that it becomes a nep because it is rolled between the carding cylinder and the screen.

By using carding elements that can cooperate with the clothing of the cylinder, a completely different effect can be introduced in this area of the main cylinder.

The formation of neps is not only considerably reduced but becomes negligible, and the material conveyed by the main cylinder can be advantageously disposed of.

Preferably, the carding element on the cover means cooperates with the clothing on the main cylinder over the entire width of the main cylinder during the carding operation.

Preferably, the cover means has an inner surface facing towards the main cylinder. At least a portion of its inner surface is 0.07
Within the range of 5 to 0.75o+m, preferably 0.075
~0.25mm, more preferably 0.1~0
．． U- from the envelope of the tip of the clothing element on the main cylinder with a distance in the range 2+u*.

A portion of the inner surface with such spacing is formed by the envelope of the tips of the carding elements on the cover.

The covering means is continuous over a large portion of the second arcuate portion and includes a plurality of covering means fixed closely together, either as a single unit or to form a substantially continuous covering means. It is structured as a unit consisting of sections.

In each case, part or all of the inner surface of the cover means, ie the side facing towards the clothing on the main cylinder, is formed by a carding element of a suitable type. Carding elements of this type are, for example, conventional clothing, sawtooth wire, or have a rough surface on which the individual tips act as carding elements in the stationary fibers. It can be called granular clothing.

The carding element is arranged in such a way that it is substantially unloaded, i.e. the fibers are momentarily at rest as they pass through the carding element, but do not remain there for long. Good.

Therefore, when using conventional clothing, it is necessary to use a wire with a thin metal tip and a very short length, and when using sawtooth wire, the teeth must be short and the tip must be shortened. It must be made thin and set at an appropriate angle. With a load-free carding element, no material will accumulate between the cylinder and the cover means.

In another embodiment, the covering means is interrupted and
It is formed from a plurality of sections extending around a portion of the second arc across the width of the main cylinder. Adjacent sections are spaced from the periphery of the main cylinder to define a space extending across the width of the main cylinder and parallel to the axis of rotation of the main cylinder.

Providing such a space is advantageous for short fibers, dirt and dust to be evacuated from the main cylinder, and also allows for advantageous control of airflow around the cylinder.

Screens are provided in the spaces between adjacent cover sections to provide the desired control.

The number of cover sections can be two or more and depends to some extent on the length of the second arc provided between the dower and the take-in. The angular range of each cover section may be the same, or optionally the angular range of the cover sections may vary. Similarly, the angular extent of the space between adjacent sections can be the same or vary.

If a plurality of cover sections are used, the inner surface of each cover section can be flat or, in any case, part or all of the inner surface can be a carding element.

The surfaces of the cover sections can be the same or different.

Carding elements are traditional clothing, sawtooth wire.

Alternatively, it may be a granular clothing and may be substantially unloaded.

Each cover section may be of single construction or two
It can be a composite structure consisting of two or more elements. - By way of example, each cover section can consist of a plate extending over the entire width of the cylinder and immediately following the direction of rotation of the cylinder by a segment with carding elements.

The segments consist of one or more conventional flat bars with either regular clothing or sawtooth wire hole clothing.

Immediately after the segments and in front of the cover section consisting of the plates and segments that are then joined, a space is provided. In this way, the angular range of the cover plate in each section is greater than the angular range of the segment.

The space between the tip of the carding element on the segment and the envelope of the tip of the carding element on the main cylinder is less than the space between the inner surface of the plate and the envelope of the tip of the clothing on the main cylinder. For example, it is desirable to reduce the space associated with the flat bar to 0.
The space from the inner surface of the plate is preferably within the range of 0.3 to 0.75+ am.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be better understood through the description of preferred embodiments of the carding device according to the present invention with reference to the accompanying drawings. Note that this example is only for -
Just an example.

FIG. 1 schematically shows a single-cylinder carding device with a conventional feeding device (1). The wrap of fibers is conveyed from the supply device (1) to the wrap feed section (2) and from there to the take-in (3)
is conveyed towards the carding cylinder (4) by the carding cylinder (4).

The carding cylinder is covered with sawtooth wire. The first arc of the rotating cylinder from the take-in to the dots-fa (upper part of the drawing) is fixed to the chain in a suitable manner and in a closed passage near the cylinder face and as indicated by the arrow. Surrounded by a series of flat bars movable along the return.

In the return section of the passage, short fibers, NEP, and flanno1~
Vibration n to remove loose debris from the bar
(not shown) is provided.

Below the flat bar (5) there is a dowel covered with sawtooth wire. Dotsufa rips the card web from the cylinder. The card web is removed from the docker by a stripper roll (7) and from there moved through a pair of crush rolls (8) towards a condenser and calender roll (9).

The tekine (3) usually has a moat knife (10) and a screen (11) associated with it.

The present invention relates to an arcuate portion of a rotating cylinder extending from a doffer assembly to a take-in assembly, that is, an arcuate portion in the range indicated by α in FIG. A part of this area is provided with covering means, at least a part of which is provided with a carding element.

According to the embodiment shown in the first figure, the cover means are provided with the reference numeral (12).
) to (14), each adjacent and paired section is separated by a certain distance.

Although only section (13) is described in detail, each section is comprised of a curved plate (15) and a flat bar (16) mounted adjacent to each other and each extending across the width of the main cylinder.

The plate (15) has a tapered front edge (17) and is oriented towards the clothing on the main cylinder;
It has a smooth surface that is spaced from the envelope of the tip of the clothing by a distance of 065-0.75++ m.

Each flat bar has sawtooth wire or regular clothing.

The carding element is arranged to act in conjunction with the clothing on the main cylinder and.

From the card cover of the main cylinder, 0.1 to 2. Omo+
are separated by a distance of Therefore, a strong carding effect is exerted on the fibers carried by the main cylinder.

A sealing strip (18) seals the gap between the plate and its associated flat bar.

The free space between adjacent cover parts communicates with a cleaning device of the undercard, through which short fibers, dirt and debris discharged are collected and removed from the card.

Said sections are mounted in a suitable manner on both sides of the carding device, allowing for the desired mounting and adjustment.

A card constructed as described above operates with almost no nep as compared to conventional cards.

flat bars in one or more cover sections;
It is preferable to provide two or more instead of one as shown in the figure.

In another embodiment of the invention shown in Figures 2 to 5, parts of the pickerine (3), the main carding cylinder (4) and the dossier (6) are shown.

In the embodiment shown in the second figure, the arc from the doffer to the take-in is covered over its entire length by a continuous cover (20) formed as a plate curved to match the curve of the cylinder.

The inner surface of the plate (21) is provided with a granular clothing whose point is directed towards the clothing of the main carding cylinder.

Instead of granular clothing, very short wire or other unloaded clothing can be used in this construction. Furthermore, the clothing, whatever its shape, need not cover the entire inner surface of the plate.

The fabric is thus placed on one or more band-like plates extending across the carding device from one side of the main cylinder to the other.

The cover (20) is preferably supported on both sides of the carding cylinder to enable it to be installed in the desired position and alignment.

In the case of Fig. 3, a continuous cover is provided over almost the entire lower arc of the main cylinder;
Consisting of two sections (22) (23) (24), close to each other and with a gap between them, the sealing strip (2
5) Sealed by (26).

Sections (22) and (24) are smooth-faced plates.6 Section (23) consists of a plurality of flat bars, with sealing strips between adjacent bars. Each section is separately attached to the carding device so that it can be adjusted independently of the other two sections, and the sealing member is sufficiently flexible to allow this adjustment.

The flat bars are also individually adjustable.

In the illustrated embodiment, only one section (23) is provided with carding elements on its inner surface. However, the carding elements can be provided on the inner surface of the selected cover section or sections using flat bars or by any other method.

In the embodiment shown in Figure 4, the cover is interrupted.

In this device, the cover is arranged around the lower arc of the cylinder in two sections spaced circumferentially and suitably mounted to provide the desired adjustment.
8) It consists of (29).

Each section is provided with clothing (30) (31) on its inner surface. The clothing may be of any desired type, such as wire or granular clothing.

In the device shown in Figure 5, the cover is interrupted and two
It consists of two sections. Each section consists of three flat bars with clothing (32) (33) on the inside surface.

A first screen (34) is located in the free space between the dotufa (6) and the first section (30).
) and (31) there is a second screen (3
5), a third screen (36) is arranged in the free space between the section (31) and the take-in (3), respectively. The flat bars and screens are suitably mounted to allow for the desired adjustment.

In each of the above embodiments, the position of the cover, i.e. the position of the cover section relative to the tip of the teeth on the main cylinder, takes into account the prevention of nep formation, as well as the promotion of the cleaning action of the web, in order to provide the most effective feedstock to be processed. determined to be able to be controlled.

If a conventional flat bar is used to form any part of the covering means, the carding element may have a flat envelope or a concave envelope with its tip matching the curve of the main carding cylinder. It will be removed as much as possible.

Various other devices are conceivable for mounting the carding element on the cover around the part of the arc of the main cylinder extending from the dolphin to the take-in.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of a carding device according to the invention. 2 to 5 are schematic diagrams each showing a part of the carding device extending from the take-in to the do-fa. (1) Feeding device (2) Lap feed section (3) Takein (4) Carding cylinder (5) Flat bar (6) Dotufa (
7) Stripper roll (8) Crush roll (
9) Calendar roll (10) Mort knife (1
1) Screen (12) (13) (14) Cover section (15)
) Curved play) - (16) Flat bar (17) Front edge (18) Sealing strip (20)
Cover (21) Plate (22) (
23) (24) Section (25) (26) Seal strip (28) (29) Section (30)
(31) Clothing, section (32) (33) Clothing
(34) First screen (35) Second screen (36) Third screen "xJ',;k<37
' Procedural amendment words and deeds) September 1986? Kunio Ogawa, Commissioner of the Japan Patent Office1, Indication of the case Patent Application No. 151571 of 19882, Name of the invention Carding device3, Person making the amendment Relationship to the case Patent applicant name Carding Specialists (Canada) ) Limited 4, Agent 5, Date of amendment order: August 5, 1988 (Shipping date: August 25, 1988) 6. Subject of amendment

Claims (13)

[Claims] (1) A take-in, a main cylinder with a cloth for receiving fibers from the take-in, a doffer for stripping the fiber web from the main cylinder, and a doffer located near the main cylinder and extending from the take-in to the doffer. carding means capable of cooperating with the clothing on the main cylinder within the first arc of the rotary cylinder of the doffer; means for stripping the card web from the doffer; and means of the rotary cylinder from the doffer to the takein. covering means provided over a major portion of the second arcuate portion, said covering means being operable to cooperate with clothing on the main cylinder over at least a portion of said second arcuate portion during a carding operation. Carding device characterized in that it has a carding element. (2) The carding element on the covering means is adapted to cooperate with the clothing on the main cylinder over the entire width of the main cylinder during carding operations. The carding device according to item 1). (3) The cover means has an inner surface facing toward the main cylinder, and at least a portion of the inner surface is between 0.075 and 0.075.
Carding device according to claim 1 or 2, characterized in that it is spaced from the envelope of the tip of the clothing element on the main cylinder by within the range of 75 mm. (4) A carding device according to claim (3), wherein a part of the inner surface of the cover means is formed by the tip of a card element constituting the inside of the cover means. . (5) Claim (1) characterized in that the cover means is continuous over almost the entire second arcuate portion.
The carding device according to any one of items (4) to (4). (6) A carding device according to claim (5), characterized in that the carding element is provided over the entire inner surface of the cover means. (7) The carding device according to claim (5), wherein the carding element is provided over only a part of the inner surface of the cover means. (8) the covering means is discontinuous and has a plurality of sections, each section extending around a portion of the second arcuate portion and extending across the width of the main cylinder; Claim (1) is characterized in that: extends over the entire width of the main cylinder and is spaced apart from the periphery of the main cylinder so as to form a space parallel to the axis of rotation of the main cylinder. The carding device according to any one of items (4) to (4). (9) The carding device according to claim (8), wherein the screen is provided in a space between adjacent cover sections. (10) Carding device according to claim 8 or 9, characterized in that a carding element is provided over the entire inner surface of at least one cover section. (11) Claims (8) or (9) characterized in that the carding element is provided over only part of the inner surface of at least one cover section.
Carding device as described in Section. (12) a composite structure in which each cover section consists of a plate with a smooth inner surface and a segment having a carding element and located immediately downstream of said plate in the direction of rotation of the main cylinder; Claims (8) to (1) characterized in that
The carding device according to any one of items 1). (13) The carding device according to claim (12), wherein the segment is comprised of at least one flat bar.