JPS6338448B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a wrap gel correction method for correcting wrap gel in a wrap machine such as a ribbon wrap machine, a sliver wrap machine, or a lap homer (trade name).

Conventional technology In conventional lap machines, the draft amount of the draft section can be changed by replacing the chain gear, but the purpose of changing the draft amount with the change gear is to change the gel range between laps. The amount of draft in the draft section was constant from the beginning to the end of the lap, and it was not possible to change the slope within the lap.

Problems to be Solved by the Invention Generally, when winding a lap in a lap machine which is a pre-process of a comber, the length of the lap from the start to the end of the wrap depends on the characteristics of the lap winding device. In other words, the gelation (weight per unit length) of the wrap varies depending on the winding diameter of the wrap, and as the winding length of the wrap increases, the gelation of the wrap also tends to increase. In addition, in the comber, which is the next process machine to the comber, as the wrap placed on the comber is unwound by the comber, the gelation of the spun sliver tends to become slightly larger. The gelatin of the spun sliver tends to become smaller as the number of slivers in the can decreases. Since yarn is formed from the sliver spun by the above-mentioned comber or drawing machine, fluctuations in the gelatin of the spun sliver directly lead to fluctuations in the yarn count and have a negative impact on yarn quality. This has become a major problem that cannot be ignored when a high level of high quality yarn is required. In particular, when changing laps at the comber or cans at the drawing machine at the same time to improve workability, the gelation fluctuations of the laps are superimposed for many pieces, resulting in the gelation fluctuations of the spun sliver. There was a problem in that the yarn became extremely large and the quality of the yarn deteriorated significantly.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention has been developed in order to solve the above-mentioned problems. The slivers are set all at once to form a sliver, and in the sliver, the slope of the part corresponding to each section of the above-mentioned lap is divided into a predetermined number is measured, and the slope fluctuation of each sliver part is measured based on those measured values. The draft correction amount of each lap section is set to cancel the above-mentioned wrap section, and when winding the wrap with the wrap machine, the draft amount of the draft section is adjusted every time the wrap supplied to the draft section reaches the position of the above wrap section. The sliver is sequentially switched to a draft amount that takes into account the above-mentioned draft correction amount corresponding to the lap section, so that the lap after winding has a gel grain fluctuation that cancels the gel grain fluctuation of the spun sliver when it is loaded into the next process machine. It is characterized by correcting the slope of the lap.

Function When winding a lap onto a bobbin with a lap machine,
When the lap supplied to the draft section reaches the position of each lap section where the entire length of the lap is divided into multiple sections, the draft amount of the draft section is adjusted so as to cancel out the gelation fluctuation of the spun sliver when the lap is placed in the next process machine. Switch to a value that takes into account the draft correction amount set in . As a result, the lap wound by the lap machine is gelled corrected so that it has a gelling variation that eliminates the gelling variation of the spun sliver when the lap is loaded into the next processing machine.

Embodiments Next, embodiments of the present application will be described in detail with reference to the drawings. FIGS. 1 and 2 show a three-head type lap homer as an example of a lap machine in which the present invention is implemented. First of all, to explain this lap homer, 1 is a lap conveyor for transporting the lap L, and it has a driving roller 3 and a driven roller 4 that are rotatably supported on the machine frame 2, and is suspended between these rollers 3 and 4. It is composed of a conveyor belt 5. The drive roller 3 of the lap conveyor 1 is rotated in the direction of the arrow by a motor 6 via a belt 7, a pulley 8, a drive shaft 9, a gear train 10, and the like. The drive shaft 9
Although not shown, it is connected to a low speed motor via a clutch, so that the winding speed of the wrap L can be switched to a low speed when necessary. 11,1
Reference numerals 1A and 11B indicate first, second, and third head sections that are sequentially disposed in the middle of the transfer path of the lap conveyor 1, and this is because a part of the second head section 11A is implemented by implementing the gel correction device of the present invention. They all have the same configuration except for the changes described below.Next, only the first head section 11 will be explained, and the second,
Regarding the third head portions 11A and 11B, portions that are considered to have the same or equivalent configuration as the first head portion 11 will be given the same reference numerals as those of the first head portion 11 with the same letters A and B, and redundant explanation will be omitted. In the first head section 11, 12 is a can (not shown).
13 is a sliver table that aligns the slivers sent from the creel 12 on a flat surface.On this sliver table 13, each sliver is bent at right angles and a flat plate is placed on the sliver table 13. A sliver guide (not shown) is provided to gather the sliver into a wrap L. Reference numeral 14 denotes a draft section which is arranged at an angle of approximately 45 degrees, and is constituted by a pair of upper and lower front rollers 15 and a back roller 16, which are rotatably supported by the machine frame 2. The lower front roller 15 is rotated in the direction of the arrow by the rotation of the drive shaft 9 via bevel gears 17 and 18, a countershaft 19, and bevel gears 20 and 21. The lower back roller 16 is rotated in the direction of the arrow by the rotation of the roller shaft 15a of the front roller 15 via a gear 22, a draft change gear 23, an intermediate gear 24, and a gear 25. A feed roller 26 is used to feed the sliver, and is rotated in the direction of the arrow by the rotation of the gear 25 via a gear train 27, a shaft 29, and bevel gears 30 and 31. Next, reference numeral 32 denotes a pair of upper and lower calender rollers disposed behind the lap conveyor 1, and the lower calender roller 32 is rotated in the direction of the arrow through the gear train 33 by the rotation of the drive shaft 9. It's becoming like that. Reference numeral 34 denotes a winding section disposed behind the calendar roller 32, which is held between a pair of front and rear winding drums 35 and 36 rotatably supported by the machine frame 2 and a lap plate (not shown). The drums 35 and 36 take up the bobbin 37.
It is comprised of a pressure mechanism (not shown) that presses upward. The winding drum 35 on the rear side is rotated by the gears 38, 39, 40 by the rotation of the calendar roller 32.
The winding drum 36 on the front side is rotated in the direction of the arrow through the gears 41 and 4 by the rotation of the gear 40.
2 in the direction of the arrow. In the lap homer configured as described above, the first
When a large number of slivers (for example, 16 slivers) are supplied to the second and third head parts 11, 11A, and 11B, these many slivers are formed in the lap L and drafted by the draft parts 14, 14A, and 14B. These three drafted wraps L are fed onto the conveyor belt 5 of the wrap conveyor 1 and superposed into one wrap L, and after this one wrap L is transferred to the calendar roller 32, it is sent to the winding section. At step 34, it is wound onto a bobbin 37 and formed into a full wrap La (winding wrap). When winding the wrap L around the bobbin 37 in this way, the bobbin 37 is driven to rotate via the wrap L wound around the bobbin 37, so the wrap L wound around the bobbin 37 is As the length of the wrap L becomes longer, that is, as the weight of the wrap L wound around the bobbin 37 increases, the rotation of the bobbin 37 is delayed.
The slope is lap L compared to lap L before winding.
As the length of winding onto the bobbin 37 becomes longer, the length increases by several percent. Reference numeral 43 denotes a well-known wrap weighing device, which measures the weight of the full wrap La wound up by the wrap homer using a measuring device 43a, and calculates the deviation between this measured amount and the standard setting weight using a differential transformer 43b. and is configured to output it as a voltage value. 44 is a full wrap conveyor.

Next, a method and apparatus for correcting the wrap in the wrap homer as described above will be explained. First, reference numeral 45 denotes a PIV type transmission installed opposite to the second head section 11A so as to be able to change the draft amount of the draft section 14A. It is rotated via a pulley 47 on the shaft 19, a synchro belt 48, a direction changing mechanism 49, a synchro belt 50, and a pulley 51 on the input shaft 46. The above transmission 45
A pulley 53 is fixed to the output shaft 52 of the front roller 15A, and a synchro belt 55 is suspended between the pulley 53 and a pulley 54 rotatably fitted to the roller shaft 15aA of the front roller 15A. The pulley 54 is the roller shaft 1 of the front roller 15A.
5aA is integrally connected to a gear 56 rotatably fitted. This gear 56 corresponds to the gears 22 and 22B of the first and third head portions 11 and 11B, and is meshed with the draft change gear 23A. Therefore, in the second head section 11A, the front roller 15A of the draft section 14A is directly rotated by the countershaft 19 in the same way as in the first and third head sections 11 and 11B.
The rotation of the countershaft 19 is changed in speed by a predetermined amount by a transmission 45 and transmitted to the back crawler 16A. The speed change amount of the transmission 45 can be changed to any desired magnitude by rotating a speed change shaft 57. Next, 58 is a winding length detecting device, which is a winding length detecting device for the wrap L wound on the winding section 34.
The supply position to the draft portion 14A is at full wrap.
When the total length of the lap in the La state is divided into a predetermined number (for example, 20), each lap section is detected and a winding position signal is transmitted respectively.
In this embodiment, each winding length position of the wrap L is detected by detecting the amount of rotation of the front winding drum 36. In this winding length detection device 58, 59 is a pulse generator, which includes a pulse display plate 60 fixed to the drum shaft 36a of the front winding drum 36 and a proximity switch for detecting the display section 60a of this pulse display plate 60. 61, and the winding drum 36 is set at a predetermined angle (45 degrees in the drawing).
Each time the wrap L is rotated, that is, each time the wrap L is wound onto the bobbin 37 by a predetermined amount, a length measurement pulse is transmitted from the proximity switch 61. 62 counts the number of length measurement pulses and sends it to the draft section 14 of the wrap L.
This is a preset counter for transmitting a winding position signal each time the supply position to A reaches each preset lap division position, and the count setting value P of this is:
The total length of the wrap in the full wrap state is E, the positions where the total length E of the wrap is divided into N equal parts (including both end positions) are defined as the respective winding length positions, and the wrap L corresponding to the transmission interval of the above-mentioned length measurement pulses is placed on the bobbin 37. The winding amount is e
Then, the value is set to satisfy the formula P=E/eN, and each time the lap L is wound on the bobbin 37 by E/N (=Pe), each lap division position of the lap L changes to the draft part 14A position. The device is configured to generate a step switching signal, which is exemplified as a winding position signal, each time the winding position signal is reached. Next, reference numeral 63 denotes a draft correction amount setting position configured so that the draft correction amount corresponding to each winding length position can be set in advance, and in the drawing, the positions are set parallel to each other (N+1).
The slide volumes 63a0, 63a1, .
...63aN (hereinafter collectively referred to as Slide Volume 6)
3a), it can be set by a voltage value. Next, reference numeral 64 changes the speed change amount of the transmission 45 of the second head section 11A by the step switching signal from the winding length detecting device 58 to the slide volume of the draft correction amount setting device 63 corresponding to the step switching signal. This is a control device for sequentially switching the shift amount according to the draft correction amount of 63a, and is configured as follows. First, a gear 65 is fixed to the transmission shaft 57 of the transmission 45.
is meshed with a gear 67 fixed to the rotating shaft 66a of the pilot motor 66. The pilot motor 66 is configured to be rotated forward or reverse by an operation signal from a pilot motor control circuit 68 which is transmitted in accordance with the calculation result of a calculation circuit which will be described later.
Further, a detection shaft of a shift amount detector 69 using a variable speed resistor is connected to the shift shaft 57, and a detection shaft of a shift amount detector 69 using a variable speed resistor is connected to the shift shaft 57.
The amount of shift by the pilot motor 66 of No. 5 is detected as a voltage value by this shift amount detector 69, and this voltage value is fed back to an arithmetic circuit which will be described later. The magnitude of the voltage value outputted by the shift amount detector 69 is determined by the pilot motor 66 so that the draft portion 14A is draft-corrected by the draft correction amount set by the draft correction amount setting device 63. is set to be equal to the set voltage value when the draft correction amount is set. Reference numeral 70 indicates a slide volume 63 of the draft correction amount setting device 63 corresponding to the step switching signal from the winding length detecting device 58.
This is a stepping relay for connecting a to an arithmetic circuit, which will be described later.
By switching these contacts 70b, the draft correction amount corresponding to each winding length position of the wrap L can be sequentially input to the calculation circuit 71. The arithmetic circuit 71 compares the voltage value from the draft correction amount setting device 63 and the voltage value from the shift amount detector 69, converts the difference into a speed increase signal or deceleration signal, and sends the signal to the pilot motor control circuit 68. ing. Next, 72 is a lap weight control pilot motor that is controlled via a control circuit 73 based on the deviation value of the lap weighing device 43, and a detection shaft 74a of a variable resistor 74 is connected to a circuit shaft 72a. A lap weight correction value corresponding to the deviation value can be stored and output as a voltage value. The voltage value from the variable resistor 74 is added to the voltage value from the draft correction amount setting device 63 in the arithmetic circuit 71.

In the case of the above configuration, before starting the winding operation of the wrap L, first, the draft correction amount of each slide volume 63a of the draft correction amount setting device 63 and the reference setting weight of the wrap measuring device 43 are set. The magnitude of the draft correction amount of each of these slide volumes 63a is determined by applying the full wrap La, which has been previously wound up by the wrap homer, to the comber of the next process machine or to the comber and drawing machine of the next process machine in order to form a sliver. The sliver is pulled back and the wrap L accompanying the above wrap winding is applied.
The slopes at positions corresponding to each lap division position are measured, and based on the data obtained by the measurement, the slope is set to a size that can correct the slope fluctuation at each lap division position. As the wrap L is wound up by the above-mentioned wrap homer, the slope of the wrap L becomes larger as the winding amount of the wrap L increases. The amount will be set to be large. In addition, in the comber, as the lap is unwound and the lap diameter becomes smaller, the gel grain of the spun sliver becomes slightly larger, so in order to correct for this gel grain variation, the lap is Each draft correction amount is set so that the grain of L becomes slightly smaller.In the drawing machine, as the amount of sliver supplied in the can decreases, the grain of the spun sliver becomes slightly smaller, so this grain fluctuation is corrected. In order to do this, each draft correction amount must be set so that as the amount of winding of the lap L by the lap homer increases, the grain of the lap becomes slightly larger. Next, the motor 6 of the wrap homer is rotated to start winding the wrap L.
By starting this winding operation, the stepping relay 70 of the control device 64 is set to the first step, and the voltage value corresponding to the draft correction amount set by the first slide volume 63a0 of the draft correction amount setting device 63 is set. The signal is input to the arithmetic circuit 71. As a result, the rotation shaft 6 of the pilot motor 66
6a is rotationally controlled so that the voltage value from the shift amount detector 69 becomes equal to the voltage value from the slide volume 63a0, and the draft amount of the draft portion 14A becomes a value that takes into account the draft correction amount of the slide volume 63a0. The amount of gear change of the transmission 45 is controlled. Therefore, the wraps L supplied from the second head section 11A to the wrap conveyor 1 are transferred to the slide volume 63a by the draft section 14A.
The gel of the wrap L that is drafted with a draft amount including the draft correction amount of 0 and wound up by the winding section 34 is controlled. On the other hand, when the motor 6 is rotationally driven and the winding drum 36 is rotated as described above, the pulse generator 5 at the winding length detection position 58
9 emits a pulse signal every predetermined rotation angle of the winding drum 36, that is, every time the wrap L is wound onto the bobbin 37 for a predetermined length, and this pulse signal is input to the preset counter 62. When the count number of the preset counter 62 reaches a preset count value, the preset counter 62 issues a step switching signal, which is input to the drive coil 70a of the stepping relay 70. As a result, contact 7 of stepping relay 70
0b is now switched to the second step, a voltage value corresponding to the draft correction amount set by the second slide volume 63a1 is input to the arithmetic circuit 71, and the draft amount of the draft portion 14A is slid in the same manner as above. It is controlled to have a value that takes into account the draft correction amount of the volume 63a1.
The step switching signal is transmitted when the supply position of the lap L to the draft section 14A reaches a preset lap section position, and the draft section is controlled by the draft correction amount of the slide volume 63a1 corresponding to this lap section position. The draft amount of 14A is corrected. As described above, each time the supply position of the lap L to the draft section 14A reaches each lap division position, the preset counter 62 issues a step switching signal, and the stepping relay 70 is sequentially switched to the final step. The draft amount of the draft portion 14A is sequentially switched to the draft amount taking into account the draft correction amount set corresponding to each lap division position, and the draft amount of the draft portion 14A is changed to the winding length on the bobbin 37 of the lap L. Changes will be made accordingly. As described above, the draft correction amount of each slide volume 63a of the draft correction amount setting device 63 is set to a size that can correct the gel range fluctuation at each lap division position as the wrap L is wound. The lap L of the two-head portion 11A is drafted so as to be able to correct the above-mentioned gel range fluctuation. Therefore, at the full wrap La where the winding of the lap L has been completed, the gel grain has been corrected so that the gel grain fluctuations are canceled out in the post-processing machine. After winding of the wrap L is completed, the full wrap La on the winding drums 35 and 36 is placed on the wrap weighing device 43 and its weight is measured. The motor 72 is rotated, and a lap weight correction value corresponding to this deviation value is input to the arithmetic circuit 71. Therefore, when the next wrap L is wound, the weight fluctuation of the full wrap La is also corrected. When the stepping relay 70 is switched from the final step to the first step, the drive shaft 9 is rotated at low speed by the low speed motor until the switching is completed, and the wrap L is wound at low speed. As a result, the large uneven portion of the lap L that occurs when the final step changes to the first step becomes extremely short, and the wasteful portion of the lap can be reduced.

In the above embodiment, the winding length detecting device is composed of a pulse generator and a preset counter to detect the positions of evenly spaced lap sections, but a timer is used to detect irregularly spaced lap sections. The section position may also be detected. Further, the pulse generator may generate pulses by rotating other parts such as a countershaft. Furthermore, the winding length detecting device may be configured to detect the amount of rise of the bobbin on the winding drum to detect the winding length of the lap. In addition, in the above embodiment, the draft correction amount setting device is configured with a large number of parallel slide volumes, so there is a great feature that the set value of the draft correction amount can be viewed directly as a single curve, but the present invention is not limited to this. isn't it.

Effects of the Invention As described above, in the present invention, when winding a sliver onto a bobbin in a sliver homer, the sliver is prepared by loading the sliver wound by the sliver into the next process machine such as a comber or drawing machine in advance. The sliver is then divided into a predetermined number of sections, and the gelation is measured in each section, and based on these measurements, correction is made to cancel out the gelation fluctuations in each sliver portion. The draft correction amount for each lap section is set in advance, and each time the lap supplied to the draft section reaches the position of the above-mentioned lap section, the draft amount of the draft section is added to the draft correction amount corresponding to that lap section. Since the draft amount is changed sequentially and the lap gelation is corrected according to the lap winding length, the gelation of the spun sliver due to fluctuations in the lap diameter in the comber in the subsequent process and the fluctuation of the supplied sliver in the drawing machine can be corrected. It can be corrected to cancel out the gel grain fluctuations of the spun sliver due to changes in the can capacity, and as a result, the gel grain fluctuations of the spun sliver from the drawing machine, which have the greatest impact on yarn quality, can be significantly reduced, resulting in a significant improvement in yarn quality. In addition, it is possible to improve the work efficiency by changing the wraps in the comber and the cans in the drawing machine at the same time.

[Brief explanation of the drawing]

The drawings show an embodiment of the present application, and FIG. 1 is a schematic explanatory diagram of a lap homer equipped with a Lap gellen correction device, and FIG. 2 is a partially omitted illustration of a lap homer equipped with a Lap gellen correction device. The perspective view and FIG. 3 are explanatory diagrams of the rapp gellen correction device. 14... Draft section, 34... Winding section, 45...
...Transmission, 58... Winding length detection device, 63...
Draft correction amount setting device, 64...control device.

Claims (1)

[Claims] 1. When winding a lap onto a bobbin using a lap machine, the laps wound by the lap machine are loaded all at once into a next process machine such as a comber or a drawing machine to form a sliver, and the total length of the lap in the sliver is The slope of the part corresponding to each section divided into a predetermined number is measured, and the draft correction amount for each lap section is set based on the measured values to cancel out the slope fluctuation of each sliver section. When winding a wrap with a wrap machine, the draft amount of the draft section is sequentially switched to a draft amount that takes into account the above-mentioned draft correction amount corresponding to that wrap section each time the wrap supplied to the draft section reaches the above-mentioned wrap section position. . A method for correcting gel grains of a lap, which comprises correcting gel grains of the lap so that the grains of the lap after winding have grain fluctuations that cancel out gel grain fluctuations of the spun sliver when it is loaded into the next process machine.