JPS596926B2 - card machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sliver processing device in a textile machine, in particular a carding machine.

Carding machines or sliver-making devices are known in which carded weak web-like fibers are drawn through collecting elements having conical through holes to form slivers, which are then placed in collecting cans or coilers.

Such machines are equipped with a pair of sensing rollers that help control the operation of the machine to detect changes in sliver thickness and to control sliver uniformity.

One such device is described in GB 1277581.

Such devices are primarily used to control long distance variations in weight per unit length of sliver.

In devices of the type described above, the sliver can be easily threaded through the collecting elements after it has been manually consolidated, so that the sliver is introduced into the device like a thread.
up the sliver) is not difficult.

The formation of the sliver by this method is carried out without any attempt to correct for short variations in the spacing of the weight per unit length of the sliver or to carry out any actual drafting operations.

Drafting is carried out by means of a drawing frame in which a plurality of slivers are brought together prior to drafting and then passed through a series of drafting rolls before being re-wound using a known trumpet. It is designed to collect this at the mouth.

In the drawing frame embodiment, a plurality of slivers are first lightly drafted to obtain a single sliver of approximately equal weight per unit length to the first sliver fed to the drawing frame. It is stretched out like that.

Furthermore, drafting methods are also known in which the sliver is first similarly slightly drafted.

The resulting single sliver is then measured between textured rollers and collected in a trumpet before being drafted again.

The sliver measured by this method has a relatively bulky property, and even if there is a cut in front of the trumpet, the incoming sliver has a bulky property and there is a gap between the drafting element of the drawing frame and the measuring element. Since the space is sufficient, it is easy to connect the slivers.

In addition to this, due to the bulkiness of the drafted sliver, the size of the elements of the drawing frame, especially the trumpet and measuring elements, has an effect.
It connects the cut sliver, removes the cause of the failure, and makes it easy to reintroduce the sliver by threading it into the drawing frame if necessary.

The inventor has found that it is extremely important not only to form a single sliver from a very weak carded web coming out of a carding machine, but also to perform sliver drafting and measuring operations as the sliver is being formed. I thought it would be advantageous.

However, the single drafted sliver produced on a carding machine itself has a flat, weak, ribbon-like shape, unlike the agglomerate of weakly drafted sliver obtained in the breaker zone of the drawing frame. As such, drafting and measuring in card machines has been a major problem in that the fragile sliver can easily be cut, causing the drafting and measuring mechanism to stop.

To correct short period fluctuations in the sliver,
Due to the fragility of the drafted sliver, it has not been possible in the past to efficiently feed the sliver into the measuring device, even though the sliver has to be fed within the narrow limits of the measuring mechanism. It has been considered that, in the event of a break, it is difficult and time consuming to connect the sliver and remove objects stuck in the drafting and measuring device.

The present invention allows the sliver to be placed in the very small opening in the trumpet by placing the trumpet of the card machine in close proximity to the drafting roller and the roller with unevenness for measuring the sliver, and furthermore, in the extremely small opening between the measuring rollers. It is based on the surprising discovery that it is possible to feed in space with precise orientation despite its fragility.

An object of the present invention is to be able to accurately supply a weak web or sliver to a lampet, and to be able to measure the thickness, etc., by a known method. When the web or sliver breaks, quickly and easily clear the jam in the device,
The object of the present invention is to provide a carding machine with which the web or sliver can be spliced and reintroduced.

To achieve this objective, the present invention provides two or more sets of drafting pair rollers arranged at a distance from each other, and a guide element for guiding the web between the pair of rollers on the most upstream side in said pair of rollers. and a measuring roller disposed further downstream of the most downstream pair of rollers among the pair of rollers, a trumpet disposed between the drafting pair roller on the most downstream side and the measuring pair roller. and a device for separating the paired rollers of each of the drafting pair roller and the measuring pair roller on the most downstream side from each other, and a device for removing the trumpet from the disposed position, The trumpet has an inlet that extends between the pair of rollers along the circumferential surface of each of the drafting pair rollers on the most downstream side in the arrangement position, and has an opening at a position immediately adjacent to the pair of roller nip bores. and extending between the pair of rollers along the circumferential surface of each of the pair of measurement rollers at the disposed position,
and an exit section having an opening in the vicinity of the roller nip point, and the inner wall of the trumpet has a shape that converges from the entrance section to the exit section. It is.

The trumpet can be detached from a position between the drafting pair roller and the measuring roller on the most downstream side in a direction substantially parallel to the roller rotation axis by the trumpet detachment device. is preferred.

Therefore, the trumpet detachment device has the trumpet attached to its distal end, is supported at its base end so as to be rotatable around an axis substantially perpendicular to the axis of rotation of the rollers on both sides of the trumpet, and The arm device may be releasably fixed to the disposed position.

The sensing or measuring roller has co-operating tongues and structural parts.
andgrooveforrr1atioHs)
It is preferable to provide respectively.

In one embodiment of the invention, the plurality of pairs of drafting rollers are arranged such that their spacing can be adjusted with respect to each other, so that they can be adapted to draft webs with different lengths of stable fibers. Can change position.

Advantageously, the scraper of the drafting roller is located close to at least one of the drafting rollers.

Furthermore, it is advantageous for such a scraper to be supported on a movable element, which allows the device to be deactivated if necessary.

Said movable element can be mounted in connection with a rotatable rod device with a device deactivation actuator.

The movable element may be pivotable about an axis perpendicular to the pivot axis of the rod device and such that the scraper can be removed from a position immediately adjacent to the drafting roller.

Preferably, one of the drafting rollers of each pair is supported on a movable carrier cooperating with a pressure member so that the pressure in the nip between the pair of rollers is adjustable.

Preferably, the pressure member is adapted to move the movable carrier in order to completely separate the drafting roller in a certain position.

The present invention will be explained in more detail with reference to examples shown below.

The drawing shows an outline of an embodiment of the device of the present invention with a portion thereof cut away, and parts not directly related to the present invention are omitted.

As shown in the drawings, the device according to the invention includes a guiding or collecting element 1
In use, a web of carded fibers W is fed into the element and assembled to form a sliver.

As can be seen from the drawing, the collecting element 10 has a relatively large, generally conical through hole 11.

Adjacent to the exit side of the element 10 are rollers 12, 12.
A first pair consisting of a is positioned such that roller 12a can rotate about a fixed axis 12b while roller 12 can be moved from the position shown (this point will be explained below).

A second pair of rollers 13, 13a is provided adjacent to the first pair;
a can rotate about the fixed shaft 13b, whereas the roller 13 can move (this point will also be explained below).

Rollers 12 and 13 are supported on shafts 12c and 13C, respectively.

Rollers 12 and 13 are supported by carrier arms 14 and 14a, respectively, supported on rotational shafts.

Carrier arm 14 is supported on machine frame 15a.

There is a pressure cover 16 movable independently of the machine frame 15a and around the two pivot pins 15b, the bar 16 having a formation 17.

Spring-loaded plungers 18 on carrier arms 14, 14a are in contact with the base surface.

The carrier arm 14a is pivotally supported on an adjustable gearbox 15C by a pin 14b,
The gearbox can rotate around an axis 15d.

The plunger 18 of the carrier arms 14, 14a is
A bore in the carrier arms 14, 14a houses a spring 18a, each plunger in contact with a block 18b.

On the other hand, the block 18b is the shaft 12c of the rollers 12, 13.
, 13c (only the carrier arm 14 is shown in the figure).

Position adjustment screws (not shown) for the shafts 12c, 13c are also provided in the carrier arms 14, 14a, so that the positions of the shafts 12C, 13C relative to the free ends F of the carrier arms 14, 14a can be adjusted; Thus, the tension of the spring can also be adjusted.

The pressure cover 16 includes a pivoted locking lever 16a which supports a hook 16b adjacent to its pivot axis 16c.

The hook 16b cooperates with a pin 16d supported on the machine frame 15a-1, so that when in the solid line position it engages the pressure bar 16 in the operating position.

In this case, the base surface 17 contacts the plunger 18 and presses the rollers 12, 13 against the rollers 12a, 13a.

The interlocking movement of the locking lever 16a in the direction of arrow A beyond the position indicated by the dashed line serves to release the hook 16b from the pin 16d, and the pressure cover 16 is moved around the pin 15b in order to release the space above the carrier arms 14, 14a. Since the pressure cover 16 is rotated in the direction of arrow B,
It rotates away from the rollers 12a, 13a, and as a result,
Rollers 12 and 12a and rollers 13 and 13a are each pulled apart.

The adjustable gearbox 15C includes a pair of rollers 12,
12a and the pair of rollers 13, 13a are provided to ensure an effective distance between the nips.

As is clear from the drawings, when the gearbox is rotated about axis 15d in the direction of arrow C, the gearbox moves axis 12c of roller 12 and thus roller 12 away from roller 13.

Since the collecting element 10 is supported on the gearbox 15C, the exit end is always directed towards the doublet between the rollers 12, 12a, which means that the collected fibers W are directed to the doublet between the rollers 12, 12a. Useful for accurately feeding the tip.

The gear box 15c is provided with an arcuate long hole 15e, and a locking stud 15f passes through the long hole 15e.

A locking stud 15f is attached to the machine frame 15a, so that the gearbox T 5 C can be locked in any desired position.

It is necessary to position the rollers so that webs with different staple fiber lengths are passed between the rollers 12, 12a, 13, 13a.

A normally conical through hole 2 adjacent to the rollers 13, 13a
There is a trumpet or gauge element 19 provided with a zero.

As shown in the figure, the gauge elements 19 are arranged at positions immediately adjacent to the rollers on both sides.

That is, the gauge element 19 is connected to the roller pair 13,
13a and the pair of rollers for detection or measurement 21, 220 extend between each pair of rollers along the circumferential surface of each pair, and the inlet portion of the gauge element 190 is connected to the pair of rollers 13, 13a for detection or measurement.
It has an opening in the immediate vicinity of the second point, and has an exit part 19a.
has an opening in the vicinity of the nip point of the pair of measuring rollers 21 and 22.

The roller 21 has a groove 23 on its periphery, whereas the roller 22 has a rib 24 on its periphery.

The rectangular outlet 19a of the gauge element 19 is connected to the roller 2
1 groove 23.

In this way, the gauge element 19
3a and the sensing rollers 21, 22, and in close proximity to the two-stop points of these rollers, the sliver is allowed to move between these components in a precisely oriented manner, despite its weakness. It will be done.

Therefore, the sliver can be reliably supplied to the gauge element 19 having an extremely small opening, and it is possible to prevent the sliver from falling or breaking due to incorrect direction of supply.

In addition, since the sliver can be reliably fed into the even smaller space between the measuring rollers 21 and 22,
Even particularly fragile slivers can be measured.

Rollers 21, 220, one of which is manufactured by British Patent No. 127758
It is preferably supported on an arm (not shown) for actuating the mechanism disclosed in No. 1.

Gauge element 19 is held in place by a locking arm 25 which has at its free end a pin 25a adapted to be inserted into a blind bore in gauge element 19.

The other end of the locking arm 25 is supported on a pivot shaft 25b supported within the machine frame 15a.

The locking arm 25 is held in the illustrated position by a spring, and when it rotates against the spring, it fits into the groove 15g of the machine frame 15a. 13a and 2
It can be extracted from that position between 1 and 22.

A scraper carrier and a stop arm 26 are arranged adjacent to the rollers 12a, 13a.

The arm 26 is a scraper in contact with the roller 13a.
26a is supported.

Arm 26 further abuts pivoted element 26b which supports scraper 26C.

The free end of the scraper 26C is in contact with the roller 12a.

Arm 26 is supported on a pivot support bar 27 extending through machine frame 15a for rotation as shown by arrow C.

The bar 27 is pivotally supported for rotation in the direction of arrow D on an axle 27a located below the machine frame 15a (with respect to the rollers 12a, 13a).

The free end of the bar 27 is provided with a contact 27b, which is normally located at a slight distance from a microswitch 28 supported on the machine frame 15a.

The microswitch 28 is activated in the case of cutting of the sliver and in the case of winding of the sliver onto the roller 12a or 13a which would increase the diameter of the roller 12a or 13a and rotate the bar 27 about its axis 27a. It operates to stop the operation of the card machine.

Since the arm 26 can be rotated around the bar 27, the arm 26 can be pulled away from the rollers 12a, 13a, that is, the scraper 26a can be moved from the roller 13a, and the element 26b can be rotated to remove the scraper 260.
can be moved from roller 12a.

The thus wound fibers are passed through rollers 1 2a,
1 can be removed from 3a.

Adjacent to the exit side of the sensing rollers 21, 22 from the nip is a sliver contact 29 pivotally supported on the machine frame 15a.

If a problem occurs in the supply of the sliver from the detection roller for some reason, the contactor 29 rotates because the sliver does not come into contact with it, causing the device to stop operating.

A release mechanism (not shown) is further provided for separating the rollers 21, 22 in order to completely remove the sliver present between them.

The release mechanism can be any suitable mechanism normally used for fixing and releasing rollers from each other, such as the one shown for rollers 12 and 13, for example.

In use, to thread a web or sliver into the apparatus, +3 pressure cover 16 is rotated about pin 15b to move rollers 12 and 13 away from their corresponding rollers 12a and 13a.

A web of fibers from another carding machine is bundled and fed into the through hole 11 in the collecting element 10 and placed on rollers 12a and 13a.

The free end of the web bundle has a gauge element 190 through hole 2
The sliver is rolled by hand into a sliver thick enough to pass through zero.

When the bundled web is positioned like this, roller 1
2 and 13 are moved into contact with the bundle of fibers placed on rollers 12a and 13a and locked in place so that the pressure cover applies pressure to rollers 12,13.

The required amount of draft is then applied to the bundle of fibers and the drafted sliver is passed through the gauge element 1.
9 and is supplied between the detection rollers 21 and 22.
1 driving force is applied to the rollers 12a, 13a.

If, due to a malfunction at any point in the device, the sliver stops in the sensing roller or gauge element or between the drafting rollers 13, 138 and between the sensing rollers 21, 22, the pressure cover 16 is released. , rollers 12.13 to their corresponding rollers 12a
, 13a, move the locking arm 25 further if necessary, and move the gauge element 19 away from the roller 1.
By moving the device from the positions between 3 and 13a and 21 and 22, defects such as clogging in the device can be easily removed.

If the fibers become wrapped around the rollers 12a or 13a, the scraper arm 26 is also moved so that the wrapped fibers are removed from the rollers 12a or 13a.

After the cause of the failure has been removed, the web or sliver is introduced into the device as described above, or the broken point is spliced,
Gauge element 19 and rollers 12, 13 are returned to their original positions and locked in place.

As described above, in the apparatus of the present invention, even though the gauge element 19 is disposed directly at the drafting rollers 13, 13a and the detection rollers 21, 220, when the web or sliver breaks, the gauge element 19 can be quickly and easily placed inside the apparatus. The blockage can be removed, the web or sliver can be spliced and reintroduced.

In practice, it has surprisingly been found that the fibers of the web formed by the carding machine can simply be bundled together if the fiber tensioning and measuring equipment described above is not affected by the cutting of the sliver. It has been found that if this is immediately fed to the gathering element, the bundle can subsequently be automatically passed through the tensioning and gauging mechanisms.

As mentioned above, the device of the present invention is equipped with a mechanism that separates the rollers and pulls apart the gauge element, but in practice, winding of fibers around the rollers occurs extremely rarely.
It has also been found that there is little need to use separation and pull-off mechanisms.

This means that the device is self-actuating (self-thre
This is believed to be due to the fact that the sliver has a property of automatically reintroducing the sliver after breakage (adding), for example, and the close arrangement of the device components such as rollers, trumpets, etc.

In practice, one drive for the rollers 12a, 13a is provided by a gear mechanism, and the rollers 12, 13 are rotated by the frictional force caused by contact with the sliver being pulled.

Roller 12a is driven at a constant speed, and roller 13a is driven by a variable speed drive and gear mechanism, allowing the necessary drafting and also the ability to correct the drive speed to compensate for small variations in sliver thickness. It becomes possible.

The circumferential speed of the measuring rollers 21 and 220 is the same as that of the rollers 13 and 1.
3a and the rollers 21, 22, there is no or very little drafting (on the order of about 3%).

As is clear from the above, according to the present invention, it is possible to accurately supply a fragile web or sliver to a trumpet, and also to measure the thickness etc. using a known method, and in the event of a breakage, it is possible to quickly and easily It is possible to provide a carding machine in which blockages in the device can be removed and the web or sliver can be spliced and reintroduced.

[Brief explanation of the drawing]

The drawings schematically show one embodiment of the device of the present invention. 10... Set element, 12, 12a...
...first pair of drafting rollers, 13,13
a...Second pair of drafting rollers, 1
4,14a...Carrier arm, 16...
...Pressure cover, 16a.1...Locking lever, 16b...Hook, 18...Plunger, 19...Gauge element (trumpet), 21 , 22... Pair of detection rollers, 2
9...Contact child.

Claims (1)

[Claims] 1. Two or more sets of drafting pair rollers arranged at intervals from each other, a guide element for guiding the web between the pair of rollers on the most upstream side among the pair of rollers, and a pair of drafting rollers on the most downstream side among the pair of rollers. A pair of measuring rollers disposed further downstream of the pair of rollers on the side, a trumpet disposed between the pair of drafting rollers on the most downstream side and the pair of measuring rollers, and a drafting pair on the most downstream side. A device for separating the pair of rollers in each of the pair of rollers and the pair of measurement rollers from each other, and a device for removing the trumpet from the disposed position, an inlet portion extending between the pair of rollers along the circumferential surface of each of the drafting pair rollers on the most downstream side at the position and having an opening at a position immediately adjacent to the pair of roller nip points; an outlet section that extends between the pair of rollers along the circumferential surface of each of the pair of rollers and has an opening at a position immediately adjacent to the pair of rollers, and the inner wall of the trumpet is arranged to extend from the inlet section to the outlet section. A card machine characterized by having a shape that converges over the entire length.