JPS6157418B2 - - Google Patents

Description

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

Generally, when winding a lap in a lap machine, which is a pre-process of a comber, the length of the lap (i.e., the diameter of the lap) changes from the beginning to the end of the lap depending on the characteristics of the lap winding device. Correspondingly, the gelation (weight per unit length) of the wrap varies, and as the winding length of the wrap increases, the gelation of the wrap also increases. However, such fluctuations in lap gelation cause fluctuations in yarn count and have an adverse effect on yarn quality, which has become a major problem that cannot be ignored when high-quality yarns are required today. In particular, if the lap exchange in the comber and the can exchange in the drawing machine are performed at the same time in the subsequent process to improve work efficiency, the above-mentioned gel grain fluctuations of the laps will be superimposed for several laps. Therefore, there was a problem that the gelation fluctuation of the spun sliver became extremely large and the yarn quality deteriorated significantly.

Therefore, the present invention aims to solve the above-mentioned problems without any problems.The present invention aims to solve the above-mentioned problems without any problems. A lap gellen correction device is capable of correcting the lap gelatin during winding of the wrap so as to cancel the above-mentioned glen correction, and furthermore, it is possible to extremely shorten the large uneven portion of the lap between each lap forming caused by the above-mentioned gellen correction. The wrap machine is equipped with a transmission that can change the draft amount of the draft section, and the wraps supplied to the draft section are arranged at each winding length position that divides the entire length of the wrap into a predetermined number. It is equipped with a winding length detection device that detects the winding length and transmits a winding position signal, and can set in advance the draft correction amount of the draft section corresponding to each winding length position of the wrap. The draft correction amount setting device has a draft correction amount setting device which changes the speed change amount of the transmission based on the winding position signal from the winding length detection device, and adjusts the draft correction amount of the draft correction amount setting device corresponding to the winding length position. The control device is configured to sequentially change the speed change amount according to the change amount and return to the original speed, and further changes the wrap winding speed when the speed change amount of the transmission is changed from at least the final setting amount to the first setting amount. It is characterized by being related to each other.

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 are first, second, and third head portions that are sequentially arranged in the middle of the transfer path of the lap conveyor 1, and this is because a part of the second head portion 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 and third head sections 11A and 11B will be explained.
Parts that are considered to have the same or equivalent structure as the first head part 11 are given the same reference numerals as those of the first head part 11, with the letters A and B added thereto, and redundant explanation will be omitted. In the first head section 11, 12 is a creel for guiding a large number of slivers pulled out from a can (not shown), 13 is a sliver table for aligning the slivers sent from the creel 12 on a flat surface, A sliver guide (not shown) is provided on the table 13 for bending each sliver at right angles and gathering the slivers into a flat plate to form a wrap L. Reference numeral 14 denotes a draft section which is arranged at a 45 degree inclination, and includes a pair of upper and lower front rollers 1, which are rotatably supported by the machine frame 2.
5 and a back crawler 16.
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 connected to the roller shaft 15a of the front roller 15.
, it is rotated in the direction of the arrow via gear 22, draft change gear 23, intermediate gear 24, and gear 25. 26 is a feed roller for feeding the sliver, and the gear train 27 and shaft 29 are rotated by the rotation of the gear 25.
and bevel gears 30 and 31 to rotate in the direction of the arrow. 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 unit disposed behind the calendar roller 32, which is held between a pair of front and rear winding drums 36 and 35 rotatably supported by the machine frame 2 and a lap plate (not shown). Winding drum 3 for bobbin 37
5, 36, etc. The winding drum 35 on the rear side is rotated by the gears 38 and 3 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 gears 41 and 42 by the rotation of the gear 40. In the lap homer configured as above, the first, second and third head sections 11, 11A, 11
When a large number of slivers (for example, 16) are supplied to B, these many slivers are formed in the wrap L and draft parts 14, 14A, 14B.
These three drafted wraps L are transferred to the conveyor belt 5 of the wrap conveyor 1.
The wrap L is fed to the top and polymerized into a single lap L, and this single lap L is transferred to a calendar roller 32 and then wound onto a bobbin 37 in a winding section 34 and formed into a full wrap La (rolled up lap). be done. 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, and as a result, the gel of the wrap L wound around the bobbin 37 is transferred to the wrap L before winding. In comparison, as the winding length of the wrap L onto the bobbin 37 becomes longer, it becomes larger 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 lap gellen correction method and apparatus applied to the lap homer as described above will be explained. First, reference numeral 45 denotes a PIV type transmission attached to the second head section 11A so as to be able to change the draft amount of the draft section 14A. 19, a synchro belt 48, a direction changing mechanism 49, a synchro belt 50, and a pulley 51 on the input shaft 46. Above transmission 4
A pulley 53 is fixed to the output shaft 52 of No. 5, and the pulley 53 is rotatably fitted to the roller shaft 15aA of the front roller 15A.
A synchro belt 55 is suspended between and 4. The pulley 54 is integrally connected to a gear 56 rotatably fitted to the roller shaft 15aA of the front roller 15A. 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 like the first and third head parts 11 and 11B, but the back roller 16A is rotated directly by the countershaft 19.
9 is transmitted after being changed in speed by a predetermined amount by a transmission 45. 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 wrap L to be wound up by the winding part 34.
The supply position to the draft section 14A is full wrap.
A winding length detection device is attached to detect when each winding length position that divides the total lap length in the La state into a predetermined number (for example, 20) and transmits a winding position signal, 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, each time the winding drum 36 is rotated by a predetermined angle (45 degrees in the drawing), that is, the wrap L
A length measurement pulse is transmitted from the proximity switch 61 every time a predetermined amount of the material is wound onto the bobbin 37. 62 is a preset counter for counting the number of length measurement pulses and transmitting a winding position signal each time the supply position of the lap L to the draft section 14A reaches each preset winding length position; The count setting value P is defined as E, the total length of the wrap in the full wrap state, E, the position (including both end positions) that divides the total length of the wrap into N equal parts, and the set value P of the wrap corresponding to the above-mentioned measurement pulse transmission interval. If the amount of winding L onto the bobbin 37 is e, it is set to a value that satisfies the formula P=E/eN, and the wrap L is
7, a step switching signal, exemplified as a winding position signal, is transmitted every time E/N (=Pe) is wound, that is, each winding length position of the wrap L falls to the supply position to the draft section 14A. It is configured as follows. Next, 63 is a draft correction amount setting device configured to be able to set in advance the draft correction amount corresponding to the winding length position, and in the drawing, (N+1) variable Slide volumes 63a0 and 63a1 illustrated as resistors
...63aN, and these slide volumes 63a correspond to each winding length position sequentially, and each draft correction amount is determined by these slide volumes 63a0, 63a1...63aN (hereinafter collectively referred to as slide volumes 63a). ) can be set using the voltage value. next,
Based on the step switching signal from the winding length detection device 58, the shift amount of the transmission 45 of the second head section 11A is changed to the slide volume 63a of the draft correction amount setting device 63 corresponding to the step switching signal.
This is a control device for sequentially switching the gear shift amount according to the draft correction amount of , and is configured as follows. First, a gear 65 is fixed to the transmission shaft 57 of the transmission 45, and this gear 65 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 resistor is connected to the shift shaft 57, and the shift amount by the pilot motor 66 of the transmission 45 is detected as a voltage value by the shift amount detector 69. However, this voltage value is fed back to an arithmetic circuit which will be described later. The magnitude of the voltage value output by the speed change amount detector 69 is increased by the draft correction amount set by the draft correction amount setting device 63 in the draft section 14.
When the pilot motor 66 is operated so that A is draft corrected, it is set to be equal to the set voltage value when the draft correction amount is set. Reference numeral 70 denotes a stepping relay for connecting the slide volume 63a of the draft correction amount setting device 63 corresponding to the step switching signal from the winding length detection device 58 to an arithmetic circuit to be described later; Drive coil 7
By switching these contacts 70b, the calculation circuit 7 sequentially calculates the draft correction amount corresponding to each winding length position of the wrap L.
1 can be entered. Arithmetic circuit 7
1 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. .
Next, 72 is a pilot motor for lap weight control which is controlled via the control circuit 7 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 rotating 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 can be obtained by unwinding the full wrap La that has been wound up with the wrap homer in advance and measuring the gel at each winding length position of the wrap L that occurs during wrap winding. Based on the obtained data, the size is set so that it is possible to correct the grain fluctuation at each winding length position. Further, in this case, if necessary, each draft correction amount may be set so as to also correct gel grain fluctuations of the spun sliver in the comber and drawing machine in the subsequent process. As the lap L is wound up by the lap homer, the slope of the lap L increases as the winding amount of the lap L increases. Set the draft amount to be large. In addition, in the comber, as the lap diameter becomes smaller, the grain of the spun sliver becomes slightly larger, so in order to compensate for this grain fluctuation, the grain of the lap L becomes slightly smaller as the amount of winding of the lap L in the lap homer is smaller. In the drawing machine, as the amount of sliver supplied in the can decreases, the gel grain of the spun sliver becomes slightly smaller, so in order to correct for this gel grain variation, the wrap L in the lap homer must be set. Each draft correction amount may be set so that as the amount of winding increases, the grain of the lap becomes slightly larger. Next, the motor 6 of the lap homer is rotated to start winding the lap L. When the winding operation starts, the stepping relay 70 of the control device 64 is set to the first step, and the draft correction is performed. A voltage value corresponding to the draft correction amount set by the first slide volume 63a0 of the amount setting device 63 is input to the calculation circuit 71. As a result, the rotation shaft 66a of the pilot motor 66 is rotationally controlled so that the voltage value from the speed change amount detector 69 becomes equal to the voltage value from the slide volume 6a0, and the draft amount of the draft portion 14A is adjusted by the draft correction of the slide volume 63a0. The amount of gear change of the transmission 45 is controlled so as to have a value that takes the amount into consideration. Therefore, the lap L supplied from the second head section 11A to the lap conveyor 1 is transferred to the draft section 14A.
As a result, the grain of the wrap L that is drafted by the draft amount including the draft correction amount of the slide volume 63a0 and wound 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 59 of the winding length detecting device 58 detects that the winding drum 36 is rotated every predetermined rotation angle, that is, the wrap L is 3
7 sends a pulse signal every time a predetermined length is wound, and this pulse signal is sent to the preset counter 62.
is input. 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, the contact 70b of the stepping relay 70 is now switched to the second step, and the voltage value corresponding to the draft correction amount set by the second slide volume 63a1 is input to the arithmetic circuit 71, and in the same manner as above. The draft amount of the draft portion 14A is controlled to be a value that takes into account the draft correction amount of the slide volume 63a1. The step switching signal is transmitted when the supply position of the wrap L to the draft portion 14A reaches a preset winding length position, and the draft correction amount of the slide volume 63a1 corresponding to this winding length position is Therefore, the draft amount of the draft portion 41A is corrected. As described above, each time the wrap L is supplied to the draft portion 14A at each winding length position, the preset counter 62 issues a step switching signal, and the stepping relay 70 is sequentially switched up 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 winding length position, and the draft amount of the draft portion 14A changes the winding length to the bobbin 37 of the wrap L. It will be changed depending on the situation.
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 grain fluctuation at each winding length position as the wrap L is wound. The lap L of the second head portion 11A is drafted so as to be able to correct the above-mentioned gel range fluctuation. Therefore, the full wrap La after the winding of the wrap L is completed.
In this case, the gellen fluctuations caused by the winding of the wrap L are corrected. After the winding of the wrap L is completed, the full wrap on the winding drums 35 and 36 is
La is placed on the lap weighing device 43 and its weight is measured. The pilot motor 72 is rotated based on the deviation value between this measured amount and the standard setting weight, and the lap weight correction value corresponding to this deviation value is sent to the calculation 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 is rotated at low speed by the low speed motor until the switching is completed, and the wrap is wound at low speed. As a result, the large uneven portion of the lap L that occurs when switching from the final step 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 winding length positions at equal intervals, but a timer is used to detect winding length positions at unequal intervals. The winding length position may 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 winding length of the lap by detecting the amount of rise of the bobbin on the winding drum. 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.

As described above, in the present invention, when the wrap is wound onto the bobbin, when the wrap is supplied to the draft section at each winding length position that divides the entire length of the wrap in the full wrap state into a predetermined number, the draft section The draft amount is sequentially changed to a draft amount that takes into account the draft correction amount set in advance corresponding to each winding length position, and the lap gelation is corrected according to the lap winding length. When forming, the draft correction amount corresponding to each winding length position is set in advance to a size suitable for correcting the sliver grain fluctuations that occur in the lap machine and the sliver grain fluctuations that occur in the comber and drawing machine in the post-process. By doing this, it is possible to correct the gel grain of the lap so that the gel grain fluctuations that occur in the lap machine, comber, and drawing machine are canceled out in the subsequent process. It is possible to extremely reduce gelation fluctuations in the spun sliver, and to significantly improve yarn quality. Furthermore, even if the draft amount of the draft section is changed to correct the lap gelling as described above, the lap winding speed remains unchanged while the draft amount is changed from the final setting value to the initial setting value. Since the draft is switched to a low speed, the length of the large spot in the lap that occurs when returning the draft amount from the final set value to the initial set value can be made extremely short, and the occurrence of wasteful parts in the lap can be extremely reduced. .

[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. The wrap machine is equipped with a transmission capable of changing the draft amount of the draft section, and detects when the wrap supplied to the draft section reaches each winding length position that divides the entire wrap length into a predetermined number. A draft correction amount setting device is provided with a winding length detection device that transmits a winding position signal respectively, and allows draft correction amounts of the draft section corresponding to each winding length position of the wrap to be set in advance. The device and the winding position signal from the winding length detection device sequentially change the speed change amount of the transmission to the speed change amount corresponding to the draft correction amount of the draft correction amount setting device corresponding to the winding length position. and a control device configured to switch over and return to the original state, and further switch the winding speed of the wrap to a shift amount corresponding to at least the final set draft correction amount of the transmission to the first set draft correction amount. A lap gear correction device characterized in that it is associated with switching to a low speed when the speed is lowered.