JPS6319605B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for producing a spun yarn in which two or more types of different fibers are intermittently connected in the yarn structure.

The composition of generally produced spun yarns is mainly composed of the same fiber or a mixture of different types of fibers (blended yarn).The method of imparting morphological changes to spun yarn is to partially add other fiber materials to the sliver in the draft. A well-known method is to form slabs or nep by supplying the material, but with this method, there is a limit to the changes that can be made, such as the larger the slab or nep becomes, the easier it is to fall off. This inevitably requires twisting different materials in the yarn twisting process, which complicates the process and reduces productivity. In addition, there is a limit to the hue change in the above-mentioned blended slabs and nets, and it is necessary to rely on combinations in the yarn twisting process, which again poses the problem of reduced productivity.

In recent years, space dyeing of spun yarn has been proposed as a solution to these problems, and has been widely used to improve productivity and reveal special surface patterns. It is difficult to obtain clear border areas, and problems remain, such as requiring advanced dyeing techniques and decreasing productivity. It cannot be said that it is far enough to achieve the desired effect as a design thread.

As a means of solving these various problems, attempts have been made to alternately supply different types of slivers to the draft zone during spinning to obtain a yarn in which different types of component fiber portions are alternately formed in the yarn axis direction. However, with this method, it is difficult to connect the slivers, resulting in uneven thread strength at the joints, and if the number of joints is increased, thread breakage is more likely to occur due to areas where the strength decreases. It is in a faraway state.

The present invention provides an apparatus that can make the connecting portion of the sliver more secure, provide practicality, and at the same time produce a novel spun yarn that has not been found in the past. ,
Two or more sets of draft devices, an electric signal transmitter for intermittently driving each draft device in a predetermined order, and an electric signal transmitter for intermittently driving each draft device by appropriately delaying transmission of a stop signal from the electric signal transmitter. This special spun yarn manufacturing device includes a time lag generating device for splicing the fleece sent out into a series of fleeces, and a twisting and winding device for twisting and winding the series of fleeces.

The present invention will be described in detail below with reference to the drawings. Fig. 1 is a perspective view showing an example of the apparatus of the present invention, and in the same figure, A indicates the draft device part of a normal spinning machine;
B is two sets of draft device parts in the present invention,
The slivers α and sliver β drawn out from the cans 1 and 2 are moved by nip roller pairs 3, 3', 4, 4' which are driven alternately and intermittently, and apron rollers 5, 5', 6 which rotate in synchronization with each other. .
An apron band 10 is installed to smoothly transfer the sliver between the back roller pair 8, 8' and the nip roller pair 7, 7', which transfer the sliver to the middle roller pair 9, 9' via the middle roller pair 9, 9'. It can be omitted depending on the connection state. The sliver is then passed through the spinning machine's back crawlers 8, 8'.
middle rollers 9, 9' and apron roller 11,
11' to the front roller 13, where it is again subjected to a predetermined draft, and then
4. A predetermined number of twists are applied by the rotating spindle 17 and the traveler 16 through the ballooning prevention guide 15, and the fiber is wound into a coppice.

The feature of the device of the present invention is that a sliver supply mechanism having a draft section is added to the spinning machine, and different types of slivers can be drafted and cut alternately to obtain slivers sequentially connected in the fiber axis direction. This mechanism will be explained in detail.

The rotational force is transmitted from the drive source to gear 18, and gear 1
Clutches 20 and 21 are installed coaxially with the gears 18 and 19 that drive the gears 9, respectively. Further, gears 24 and 25 are installed on the drive transmission shafts 22 and 23 of each clutch, and the bottom rollers 3' and 4' of the nip roller pair coaxially with these gears are controlled by the gears 26 and 27 that mesh with these gears. to drive.

The clutches 20 and 21 alternately and intermittently drive the drive transmission shafts 22 and 23 by causing the clutch plates to alternately come into close contact with each other and separate from each other in response to signals sent from an electric signal transmitting device to be described later. According to the drive system described above, the pair of nip rollers 3, 3',
The bottom rollers 3' and 4' of 4 and 4' are alternately and intermittently driven. Therefore, when the sliver β is being fed by the nip roller pair 4, 4', the nip roller pair 3, 3', which grips the sliver α, is at rest;
Also, the reverse is repeated one after another.

Next, the electric signal transmitting device for actuating the clutches 20 and 21 will be explained.

Figure 2 shows the simplest example of a device that electrically sends signals, with a disk 28 made of a highly conductive material (such as metal) and a highly insulating material (such as metal) surrounding the disk 28 that rotates in contact with the disk 28. Both disks 28 and 29 are composed of a disk 29 made of a material (for example, rubber, plastic, etc.) 30 and a highly conductive material 31 provided at appropriate intervals. The time period during which the highly insulating periphery 30 and the disk 28 are in contact is 4th.
The contact piece of relay R ₀ in the figure does not work and on the contrary, disk 29
During the time when the highly conductive periphery 31 of the disk 28 is in contact with the disk 28, the contact piece of the relay _R0 works and sends a signal. Therefore, the distance between the insulating portion 30 and the current-carrying portion 31 around the disk 29 may be changed as appropriate;
Also, various signals can be obtained by changing the rotational speed of the disks that rotate in contact with each other.

FIG. 3 shows an example of this signal transmission.

The horizontal axis X-X' represents the time during which the signal is sent, and the upper diagonal line area 32, 32', 3
2'' and 32 are the lower hatched area 33, for example, assuming that the relay _R0 is working on the clutch 20 in FIG. ,3
3', 33'', 33, the clutch 21 does not work, the nip roller pair 3, 3' is stopped, and the sliver α is not pulled out. The clutch 21 is actuated by energizing the part, and the pair of nip rollers 3,
When the sliver α is pulled out by driving the sliver 3', the sliver β is not pulled out and is in a stopped state. This state is alternately repeated at appropriate intervals corresponding to the reception time to the clutch (corresponding to the energized portion provided on the disk surface).

However, in this case, if the nip roller pair 4, 4' or 3, 3' starts to be driven for the first time after the nip roller pair 4, 4' or 3, 3' stops driving, the sliver breaks frequently during the spinning process. However, it becomes impossible to spin. Therefore, a time lag generating device is required to appropriately delay the stop signal from the electrical signal transmitting device. FIG. 4 explains this. Although various time lag generating devices can be considered, the simplest one is to install a delay timer. In Fig. 4, relay R ₀ operates, and when a signal is received, clutch Cl ₂ operates,
After the delay timer T ₂ receives a stop signal, the relay T ₂ in the delay timer is disconnected and the clutch Cl ₂ is disconnected after an appropriate set time. Conversely, the relay _R0 operates, and after an appropriate set time has elapsed after the delay timer _T1 receives a stop signal, the relay _T2 in the delay timer is disconnected, and the clutch _Cl1 is disconnected. Repeat this alternately and intermittently. FIG. 5 illustrates an example of this state.

The horizontal axis X-X' represents the time during which the signal is sent, and the upper diagonal area 34, 34',
34'', 34 (for example, a signal is sent to the clutch 20 in FIG. 3 and the nip roller pair 4, 4'
If the sliver α is being pulled out by driving the sliver α), the signal is actually sent and the stop signal interval
x ₂ and the time set in the aforementioned delay timer x ₂ ~
Only after the time up to _X3 has been added, the clutch 20 is disengaged and the nip roller pair 4, 4' stops. On the other hand, the lower hatched areas 35, 35', 35'' of X-X' are
For example, a signal is delayed to the clutch 21 in FIG.
When the sliver is being pulled out, the signal has already been received at X ₂ in the upper hatched area as described above, and the clutch 21 operates to drive the pair of nip rollers 3 and 3' to pull out the sliver β ₂ . Then, the clutch 21 is released and the nip roller pair 3, 3' stops only when the time from X' ₂ to X' ₃ set in the delay timer is added to the time from X' ₁ to X' ₂ until the stop signal is received. do. That is, in Figure 8
During the time from X ₂ to _{X 3} or from X′ ₂ to X″ ₂ , both the sliver α and the sliver β are supplied.

By appropriately setting each set time of this delay timer, it is possible to independently change the time during which both sliver α and sliver β are supplied, and it is possible to obtain each special spinning pattern. Become.

FIG. 6 shows one embodiment of the yarn obtained by the present invention, where A and B are regions each formed from a single constituent fiber, and C is a region formed from a single constituent fiber.
This is the connection part of B, and is an area where both A and B constituent fibers coexist.

The yarn obtained by the apparatus of the present invention is formed so that the individual constituent fiber regions of A and B are alternately present through this mixed region C, and the regions of the individual constituent fiber portions A and B are random. It is distinctive in that it is formed in

In the present invention, it is possible to change the mixed fiber region C if necessary.

Another feature is that each region of A and B can be shortened, and the ratio A/Cor B/C of A or B and C can be made to be 1 or less.

The present invention enables a reliable connection by providing a time lag when connecting the sliver, which eliminates the instability of the joint area, which was the biggest problem in the past. Spun yarn with a large design effect can be produced as needed within the range of Since it is small, its uses are not limited, and it can be used in multi-purpose fields such as carpet pile yarn, handicraft yarn, outerwear and interior materials, and the effect will be even greater if used in conjunction with the hue difference. In addition, when materials with large irregularities such as slabs are used in fields such as interior decoration and handicraft yarn, the design effect becomes even greater when combined with the change in hue.

Furthermore, the present invention does not require a special twisting machine and can produce a variety of designed spun yarns using only the spinning machine, making a great contribution to process rationalization and cost reduction.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of the device of the present invention, Fig. 2 is a side view showing an example of the electrical signal transmitting device, Fig. 3 is an explanatory diagram showing an example of signal transmitting, and Fig. 4 is a time lag generating device. 5 is an explanatory diagram showing an example of signal transmission with a time lag, FIG. 6 is a side view showing an example of a special spun yarn obtained by the apparatus of the present invention, and FIG. In the figure, 1 and 2 are cans, α and β are slivers, A is a draft device part of an ordinary spinning machine, and B is two sets of draft device parts in the apparatus of the present invention.

Claims (1)

[Claims] 1. Two or more sets of draft devices, an electric signal transmitter for intermittently driving each draft device in a predetermined order, and an intermittently activated stop signal from each draft device by appropriately delaying the transmission of a stop signal from the electric signal transmitter. A special spun yarn manufacturing device comprising a time lag generating device for splicing together a series of fleeces that are sent out at different times into a series of fleeces, and a twisting and winding device for twisting and winding the series of fleeces.