JP2684429B2 - Card sliver mottle automatic control device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an automatic control device for eliminating unevenness in thickness of a sliver fed out in a card, in particular, a long-period unevenness (hereinafter, large unevenness).

[Conventional technology]

Generally, as a means for supplying raw cotton to a card, a means for opening the fiber in a supply device such as a kneading cotton machine, transferring by air flow, accumulating in a reserve tank provided on the supply side of the card, and sequentially supplying as a wrap is adopted. Has been. However, in this case, it is unavoidable that the supply is uneven, and therefore, a measure is taken to regulate the supply of the wrap by measuring the thickness of the sliver generated by opening the fiber in the card. As one example, there is, for example, Jitsukai 55-46612,
The outline is shown in FIG.

In the figure, the above-mentioned reserve tank 101 is provided on the lap supply side of the card 100, and is supplied to the feed roller 102 in the form of a lap from below, and is supplied to the take-in roller 103 at a predetermined speed by the feed roller 102, and the cylinder 104,
It is delivered as a sliver S by the doffer 105. A coiler 106 grips the sliver S and supplies it into the can 107 in a coil shape.

The unevenness removing means 110 of the sliver S includes a measuring roller 111 for measuring the thickness of the sliver S fed from the doffer 104, and the up-and-down movement due to the variation of the sliver thickness of the measuring roller 111 is detected by the potentiometer 112 and fed. The pilot motor 115 of the continuously variable transmission 114 provided in the drive circuit 113 of the roller 102 is operated to adjust the rotational speed of the feed roller 102, that is, the lap feed speed, to prevent the occurrence of sliver spots.

[Problems to be solved by the invention]

However, even if the thickness of the sliver is constant depending on the type of raw material fiber, especially the temperature and humidity, the sliver gelen number varies, and it is difficult to remove the spots by the spot removing means.

In view of this point, the present invention has an object to measure the weight of the sliver, calculate an accurate gelen number of the sliver, regulate the amount of raw cotton for the card, and prevent sliver spotting.

[Means for solving the problem]

The sliver spot automatic control device of the present invention for achieving the above object is provided with a measuring roller for measuring the sliver thickness at the rear of the card doffer, and the wrapping is supplied by the sliver thickness variation detection signal of the measuring roller. It is equipped with a sliver thickness control mechanism that regulates the amount and a sliver weight control mechanism that measures the unit length weight of the sliver fed from the measuring roller.The sliver weight control mechanism accepts the fed sliver and this gutter. A sliver contained in the inside of the sliver is provided with a weigher to measure the weight of the sliver, the measured value by the weigher is compared with a standard value, and the ratio is added to the sliver thickness variation detection signal.

In this case, it is preferable that a draft mechanism is arranged between the measuring roller and the gutter, and the draft amount is regulated by the sliver thickness variation detection signal by the measuring roller to which the weight variation detection signal from the weighing meter is added.

Further, a nip roller is provided between the trough and the coiler roller of the sliver can, and a sliver feed speed by the nip roller is provided with a two-stage speed changing mechanism that is slower and higher than the sliver supply speed for the trough, and is connected to the trough by low speed rotation. By accumulating the sliver and feeding out the accumulated sliver by high-speed rotation, it is possible to measure the required amount of the sliver without interrupting the operation of the card, which is convenient.

Further, in this case, it is preferable that the receiving trough is provided with zero detecting means for detecting the completion of feeding of the sliver to be stored, and the rotation of the nip roller is switched to the low speed side upon completion of feeding.

Further, it is provided with a rotation speed detector of the drive shaft of the draft roller for detecting the amount of sliver accumulation on the gutter, and the weighing amount can be detected by the weighing meter based on a predetermined rotation speed arrival signal from the detector. preferable.

Further, the coiler roller is driven in association with the nip roller,
Moreover, it is preferable that the coiler roller is faster than the nip roller to impart draft to the sliver.

Furthermore, each of the group of cards to which the spread raw cotton is distributed and supplied by the air flow is provided with a measuring roller for measuring the sliver thickness at the rear of the doffer, and is supplied by the sliver thickness variation detection signal of the measuring roller. Equipped with a sliver thickness control mechanism that regulates the wrap amount, and any one card is equipped with a sliver weight control mechanism that measures the unit length weight of the sliver that is fed from the measuring roller. This sliver weight control mechanism is fed. It is also possible to provide a sliver for receiving the sliver and a scale for measuring the weight of the sliver in the sliver, and apply a sliver weight variation signal by the sliver weight control mechanism to the sliver thickness control mechanism of each card.

(Operation)

Measure the glen along with the thickness measurement of the sliver fed from the doffer and compare it with the standard glen. Then, the ratio is added to the sliver thickness variation detection signal accompanying the swing of the measuring roller to control the rotation speed of the feed roller. This effectively prevents the occurrence of sliver spots.

〔Example〕

FIG. 1 is a schematic explanatory view of the present invention. As is well known, the card 1 is a reserve tank 2 for accumulating raw material fibers, which is opened, and a pair of feeding rollers 3 provided near the lower outlet of the reserve tank.
And a feed roller 4, a take-in roller 5, a cylinder 6 and a doffer 7. Reference numeral 8 is a coiler, 9 is a coiler roller, and 10 is a sliver can. The sliver S fed from the doffer 7 is pulled out by the coiler roller 9 and stored in the can 10 in a coil shape.

Reference numeral 20 denotes an automatic spot mottle control device for the sliver S fed from the doffer 7, which is provided behind the doffer 7 to detect the measuring roller 22 for converging and sandwiching the sliver S, and detecting the ascent / descent of the roller due to variation in the sliver thickness. A sliver thickness control mechanism 21 that includes a detector 23 such as a potentiometer and controls the rotation speed of the feed roller 4 by an output signal of this detector, and a unit length weight of the sliver S that is fed out, that is, gelen, is measured. And a sliver weight control mechanism 30 for correcting the signal from the detector 23.

The sliver thickness control mechanism 21 has a continuously variable transmission 25 connected to a side shaft 24 connected to the drive system of the feed roller 4, for example, the drive side of the doffer 7, and the output side of the continuously variable transmission 25 is connected to the side shaft. 24 'is connected to the feed roller 4, and the pilot motor 26 of the continuously variable transmission 25 is operated by the sliver thickness variation detection signal from the detector 23.
The number of rotations on the output side is changed. The operation in this case is similar to that of the known structure, and the description thereof will be omitted. However, 27 is a control mechanism.

The sliver weight control mechanism 30 includes a trough 31 for temporarily storing the sliver S between the measuring roller 22 and the coiler roller 9, and a draft mechanism may be provided between the measuring roller 22 and the trough 31 if necessary. 33 will be deployed. This draft mechanism 33 includes a first draft roller D1 and a second draft roller D1.
The draft roller D2 is provided, the rotation of the first draft roller D1 is kept constant, the second draft roller D2 is selectively made high speed, and a required draft is applied to the sliver S.

The gutter 31 is mounted on an electric scale 34. The signal from the scale 34 is compared with a standard weight by a comparison calculation mechanism 35, and the ratio is used as a weight variation detection signal by the detector of the measuring roller 22. 3 signal is added.

Further, a nip roller 36 is provided between the trough 31 and the coiler roller 9. As the rotating means of the nip roller 36, a two-stage transmission means 37 (FIG. 2) for switching between two stages of a low-speed rotation of a delivery slower than the speed of the sliver S fed out from the doffer 7 and the draft mechanism 33 and a high-speed rotation of a delivery higher than the sliver speed. Equipped with. Further, it is provided with a rotation speed detector 38 that detects the amount of sliver feeding out from the draft mechanism 33 and emits a signal when the amount of sliver feeding out reaches a predetermined amount. In this way, the accumulation weighing of a predetermined amount of sliver S and the feeding of the accumulated sliver are sequentially repeated in the gutter 31, and the configuration thereof will be described with reference to FIG.

A drive shaft 40 is connected to the drive mechanism of the doffer 7. The measuring roller 22 and the first draft roller D1 of the draft mechanism 33 are connected to the drive shaft 40 via a first gear group 41 so as to rotate at a constant predetermined speed. The drive shaft 42 of the first draft roller D1 and the second draft roller D2 are connected via a second gear group 43 having a first clutch C1. This second draft roller D2
Is attached to the first intermediate shaft 44, and the timing pulley 45 having the second clutch C2 is fitted and inserted in the first intermediate shaft 44.
This pulley is connected to the variable speed drive motor ES via a timing belt 46.

The first and second clutches C1 and C2 are interlocked and act in opposite directions. When the clutch C1 is engaged, the second clutch C2 is released, and the first and second draft rollers D1 and D2. Are both driven by the drive shaft 40 to release the clutch C1, and when the clutch C2 is engaged, the first draft roller D1 is driven by the drive shaft 40 at a constant speed, and the second draft roller D2 is driven by the drive motor ES.
Is connected so that the gear can be changed.

The first intermediate shaft 44 is provided with the rotation speed detector 38 described above. The detector 38 is composed of a rotary plate 47 attached to the first intermediate shaft 44 and a proximity switch 48 opposite to the rotary plate 47. The rotary plate 47 is provided with one or a plurality of slits, and the proximity switch 48 rotates the rotation speed. To calculate.

Further, a nip roller 36 is connected to the first intermediate shaft 44 via a two-speed transmission means 37. In this two-stage transmission means 37, a small gear 50 and a large gear 51 are attached to a first intermediate shaft 44, and a second intermediate shaft 52 provided in parallel with the first intermediate shaft 44 is a first driven gear provided with a third clutch C3. 53 and a second driven gear 54 having a fourth clutch C4 are attached and connected to the small gear 50 and the large gear 51 via intermediate gears 55 and 56, respectively. This second intermediate shaft 5
2 is connected to the nip roller 36 and the coiler roller 9 via the third gear group 57. The third and fourth clutches C3 and C4 are interlocked and act in opposite directions. When the clutch C3 is engaged, the fourth clutch is released, and the nip roller 36 and coiler roller 9 are rotated at a low speed by the small gear 50. , 4th clutch
When C4 is engaged, the third clutch C3 is released,
The gears 36, 9 are rotated at high speed by the large gear 51. In this case, the peripheral speed of the nip roller 36 by the small gear 50, that is, the feeding speed of the sliver S is the feeding speed V from the draft mechanism 32.
Slightly slower (eg 2 / 3V). When driving by the large gear 51, it is slightly higher than the feeding speed V (for example, 7 / 6V).

Reference numeral 60 is a means for detecting the amount of sliver stored in the gutter 31. The sliver S is a gutter 31.
It is designed to detect when everything is pulled out of the machine and rises.

Next, the operation of the sliver spot automatic control device in the above configuration will be described with reference to FIG.

First, when the start button is turned on, the card 1 is started at low speed,
At the same time, the power supply circuit of the control device 20 is also turned on. The doffer 7 is activated at the same time as shown in FIG.
22, The first draft roller D1 is also rotated. Also control device 2
At 0, the first clutch C1 is turned on, the second clutch C2 is turned off, and the second draft roller D2 is rotated at substantially the same speed as the first draft roller D1. At the same time, the variable speed drive motor ES is turned on, the third clutch is turned on and the fourth clutch is turned off, the nip roller 36 and the coiler 9 are also operated at low speed, and the sliver S is kissed. After that, switch the card to high-speed operation (normal operation).
At the same time, the clutch C1 is turned off and C2 is turned on, and the second draft roller D2 is driven by the variable speed drive motor ES. At the same time, the third clutch C3 is turned off, the fourth clutch C4 is turned on, the nip roller 36 side is operated at high speed by the large gear 51, and the sliver S is sent out at a higher feeding speed by the draft mechanism 32 and the sliver in the gutter 31 is moved. When S becomes zero, the zero detecting means 60 detects this. With this detection signal, the clutches C3 and C4 are switched again, the nip roller 36 is operated at a low speed by the small gear 50, the accumulation of the sliver S in the trough 31 is started, and at the same time, the rotation number detector 38 starts counting. The relationship between the count number and the accumulated length of the sliver S is measured in advance. On the other hand, the sliver S in the gutter 31 is measured by a weighing machine 34, and a weight increase signal accompanying the increase in the amount of the sliver S is applied to the comparison calculation mechanism 35. Then, when the sliver S of a predetermined length is accumulated, a count end signal is applied from the rotation speed detector 38 to the arithmetic mechanism 35, measured by the mechanism 35, and compared with a standard value. The variation rate (%) obtained by this comparison is applied to the signal of the detector 23 of the measuring roller 22.
Reference numeral 27 denotes a control mechanism that receives a signal from the detector 23 and a signal from the comparison calculation mechanism 35. The control mechanism 27 regulates the rotation speed of the feed roller 4 based on both signals.

On the other hand, by the count end signal, the third and fourth clutches C3, C4 are switched again, the nip roller 36 side shifts to the high speed operation by the large gear 51, and the sliver S in the gutter 31 is changed from the feeding speed by the draft mechanism 33. Get out at high speed. And when the accumulated amount becomes zero, the third and fourth
The clutches C3 and C4 are switched, and the accumulation of the sliver S in the gutter 31 is started. This is repeated below.

The signal from the control mechanism 27 is a variable speed drive motor ES.
Is applied to the motor ES depending on the thickness of the spun sliver.
Thus, the number of rotations of the second draft roller D2 is adjusted, and a sliver of a constant gelen is always fed as much as possible.

It should be noted that the draft mechanism 33 is not necessarily required for weighing by the gutter 31. The reason will be described with reference to FIG. The figure (a) shows one example of the measured value of the spinning gel when the draft mechanism 33 is omitted, and the figure (b) shows the case where the draft mechanism 33 is provided. That is, as shown in FIG. 6A, the sliver spun out from the doffer has large spots. Therefore, in order to measure the average gelen, it is necessary to measure a considerably long sliver, and the gutter becomes large.

On the other hand, when the draft mechanism is provided, the spots of the spun gelen are small, and therefore the average gelen can be measured by measuring a relatively short sliver, which has the effect of making the gutter smaller.

However, if the size of the gutter 31 can be increased, the draft mechanism may be omitted.

Next, it is preferable to add some draft to the sliver S between the nip roller 36 and the coiler roller 9.
This has the drawback that when it is stored in the can 10 without adding a draft, it naturally stretches. An example of the measured value is shown in FIG. The figure shows the elongation and elongation of the 40-yard sliver delivered at a speed of 70 yards / min. However, S0 is a sliver when the nip roller is omitted and the coiler roller directly feeds it out, and S1 is a sliver in which a nip roller is arranged and a draft is added, which is the measurement result for 5 days. In both cases, a nip roller is provided and a draft is added, whereby subsequent elongation can be suppressed.

Next, FIG. 6 shows another embodiment. The sliver weight control mechanism 30 is preferably provided for each card. However, in the method of supplying a group of cards to the open fiber cotton by air flow, the tendency of large spots is the same for each card. In view of this, the sliver weight control mechanism may be provided for only one arbitrary card, and the weight change rate signal may be applied to another card from this mechanism. The procedure is shown in FIG.

The raw material fibers are transported together with an air flow from a supply device 70 having a fiber-spreading mechanism such as a kneading cotton machine through a main duct 71, and are distributed and supplied to branch feeders 72a, 72b, .... Branch ducts 73a and 73b are connected to the branch feeders, and the reserve tanks 2a, 2b ...... 2e, 2f face the cards 1a, 1b, …… 1e, 1f, 1g …… 1j, respectively, in each branch duct. , 2g ...
... 2j is provided, and the cards 1a to 1e connected to the branch duct 73a are group A and the card 1f connected to the same 73b.
Let ~ 1j be group B.

Sliver spot automatic control device 20a, 20 for each group
b is provided with the above-mentioned sliver thickness control mechanisms 21a to 21e and 21f to 21j on the respective cards 1a to 1e and 1f to 1j, and the sliver weight control mechanism 30a on the arbitrary cards of each group, for example, the cards 1a and 1f. , 30b are provided, and each comparison operation mechanism 35
The signals Wa and Wb from (Fig. 1) are applied to the sliver thickness control mechanisms 21a to 21e and 21f to 21j of the respective cards, respectively.

As a result, the cards 1b to 1e and 1g to 1j of each group regulate the feeding amount of the raw cotton in proportion to the sliver thickness, and perform the weight correction in the same manner as the cards 1a and 1f representing the group. .

 In the figure, 10a, 10b ... Indicates a can.

〔The invention's effect〕

According to the present invention, the thickness unevenness of the fed sliver is measured by the measuring roller, the feeding speed of the raw cotton by the feed roller is regulated, and the predetermined length weight of the sliver, that is, the gelen value is measured, and the measuring is performed. Since the thickness unevenness measurement value by the roller is corrected, it is possible to eliminate the error due to the influence of the type of raw cotton and the temperature and humidity, and it is possible to effectively remove the unevenness of the sliver, especially the large unevenness with a large unevenness cycle. .

In this case, a draft mechanism is provided in the rear of the measuring roller to draft according to the sliver unevenness, and when the draft is supplied to the gutter, the sliver unevenness in the gutter is small. The average value does not fluctuate, the gutter can be made small, and the correction cycle based on the measured gelen value can be shortened.

Also, when storing and feeding the sliver to the gutter,
When a nip roller is provided behind the gutter and the sliver feed speed by this nip roller is set to be lower than the sliver supply speed to the gutter, accumulation in the gutter due to this and feeding out by making it faster than the supply speed The storage and discharge of the sliver in the gutter can be repeatedly and continuously performed without disturbing the operation of the card and without the need to cut the sliver.

In this case, when the detecting means for feeding out the sliver housed in the gutter at high speed and detecting that the accumulated amount has become zero, the rotation of the nip roller is switched to the low speed side by the accumulated amount zero signal from the means. By this, the accumulation of sliver on the gutter can be automatically started again.

In addition, a detector for detecting the rotation speed of the nip roller drive shaft is provided as a means for detecting the amount of sliver accumulated on the gutter. The value is easy to measure.

Further, when a draft is added to the sliver between the nip roller and the coiler roller, it is effective to prevent the natural extension of the sliver after the can is stored.

Furthermore, when the opened raw material fibers are supplied to a group of cards by an air flow, the sliver spots, especially large spots, tend to be the same in each card, so that for any one card, the above sliver spot When a weight control mechanism is provided and a gelling value fluctuation signal is added to the sliver thickness control mechanism provided on each card, fluctuations in the gelling value due to the type of raw cotton in each card and the effects of temperature and humidity are eliminated, and The configuration can be simplified.

[Brief description of the drawings]

1 to 6 relate to an embodiment of the present invention. FIG. 1 is a schematic explanatory view of the present invention, FIG. 2 is a drive circuit diagram of a sliver weight control mechanism, and FIG. FIG. 4 (a) is a case in which no draft is performed, FIG. 4 (b) is a case in which drafting is performed by the drafting mechanism, and FIG.
FIG. 6 is an operational process diagram, FIG. 6 is a schematic explanatory diagram of a second embodiment of the present invention, and FIG. 7 is a schematic explanatory diagram of a conventional thickness unevenness automatic control device for a card sliver. 1,1a, 1b, 1c …… is a card, 7 is a doffer, 9 is a coiler roller, 20,20a, 20b are automatic sliver spot control devices, 21,21
a, 21b, 21c ... is a sliver thickness control mechanism, 22 is a measuring roller, 30, 30a, 30b are sliver weight control mechanisms,
31 is a gutter, 33 is a draft mechanism, 34 is a weigher, 36 is a nip roller, 38 is a rotation speed detector, and 60 is a zero detection means.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography Sho 60-16769 (JP, U) Rikai 57-21678 (JP, U) Japanese Patent Sho 56-52130 (JP, B2) Sho 59- 40448 (JP, Y2)

Claims (7)

(57) [Claims] 1. A sliver thickness control mechanism for arranging a measuring roller for measuring the sliver thickness behind a card doffer, and controlling a supply lap amount by a sliver thickness variation detection signal of the measuring roller, and a measuring ring. With a sliver weight control mechanism for measuring the unit length weight of the sliver delivered from the roller, the sliver weight control mechanism is a gutter that receives the delivered sliver,
It is equipped with a weigher that measures the weight of the sliver stored in this gutter, and compares the measured value by the weigher with the standard value,
An automatic spot controller for a card sliver, wherein the ratio is added to the sliver thickness variation detection signal. 2. A sliver weight control mechanism is provided with a draft mechanism between the measuring roller and the gutter, and a draft mechanism is provided with a sliver thickness variation detection signal by a measuring roller to which a weight variation detection signal from a scale is added. The card sliver mottle automatic control device according to claim 1, wherein the amount is regulated. 3. A sliver weight control mechanism is provided with a nip roller between a gutter and a coiler roller of a sliver can, and a sliver feed speed by the nip roller is provided with a two-stage speed changing means which is lower and higher than a sliver supply speed to the gutter. 2. The automatic varieties control device for a card sliver according to claim 1, wherein the sliver is accumulated in the gutter by low speed rotation and the accumulated sliver is delivered by high speed rotation. 4. The card according to claim 3, wherein the gutter is provided with zero detecting means for detecting when the sliver to be stored is completely fed, and the rotation of the nip roller is switched to a low speed side when the feeding is completed. Sliver spot automatic control device. 5. A rotation speed detector of a drive shaft of a draft roller for detecting the accumulated amount of sliver on a gutter is provided, and a weighing amount is detected by a weighing meter by a predetermined rotation speed arrival signal from the detector. 4. An automatic spot controller for a card sliver according to claim 3. 6. The automatic card sliver mottle control device according to claim 3, wherein the coiler roller is driven in association with the nip roller, and the coiler roller is faster than the nip roller to impart draft to the sliver. 7. A measuring roller for measuring the sliver thickness is provided at the rear of the doffer for each of a group of cards to which the spread fiber is distributed and supplied by an air flow, and a sliver thickness variation detection signal of the measuring roller is provided. Is equipped with a sliver thickness control mechanism that regulates the supply lap amount, and any one card is equipped with a sliver weight control mechanism that measures the unit length weight of the sliver fed from the measuring roller. A sliver that receives the sliver that is fed out, and a weighing scale that measures the sliver weight in the sliver are provided, and a sliver weight fluctuation signal by the sliver weight control mechanism is applied to the sliver thickness control mechanism of each card. Automatic control device for spots of card sliver.