JPS60209026A - Spinning machine - Google Patents

Abstract

PURPOSE:The gears for driving the drafting units are separately provided every unit to assemble a spinning frame suitable for small-quantity production of multiple items with high productivity. CONSTITUTION:Each spinning unit U is equipped with the drafting unit 11, twister 12, delivery roller 13, slab catcher 14, yarn holder 15 and winder 16. The drafting unit 11, delivery roller 13, taking up roller and the driving gear therefor are separately equipped for every spinning unit U so that the rotations of individual rollers may be set uniformly or differently for every unit U, respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a spinning machine for producing spun yarn from staple fiber bundles.

Conventional ring spinning machines have spinning speeds of 10 to 50 m/
Because it is slow and has low productivity, it is common for one spinning machine to have a large number of spindles, 200 or more. However, in recent years, air-type spinning machines have increased the number of
A spinning machine capable of high-speed spinning of 0.0 m10 appeared,
According to this, it is possible to produce several ring-type spindles in 1 m.

Since such high-speed spinning machines have high productivity, high-mix, small-lot production requires a large number of loft changes per fixed period of time, which increases the burden on machine management.

An object of the present invention is to solve these problems and provide a spinning machine that is highly productive and suitable for producing a wide variety of products in small lofts.

Embodiments of the present invention will be described below based on the drawings.

1 and 2 show a spinning machine according to the invention, which machine includes a number of spinning units (φ) along a frame (1).
are arranged in a row. The frame (1) has a U-shaped cross section, and a bogie running space (2) common to each unit (U) is provided within the frame (1).
Two upper and lower rails (3) and (4) are installed along the line. (5) is a running cart equipped with a doffing device (6) and a yarn splicing device (7), which runs back and forth within the cart running space (2) along the rails (3) and (4).

Each spinning unit (U) includes a draft device (11), a heating device (12), a delivery roller (13), a slab catcher (14), which is composed of a pack roller (8), a middle roller (9), and a front roller (work 0). A yarn retention device (15) and a winding device (16) are provided. The staple fiber bundle (S) drawn out from the can (6) is drafted to a certain thickness by a draft group [(11), and then heated by a heating device (12) to form a spun yarn (Y).

The chain yarn (Y) is inspected for yarn defects by a slab catcher (step 4), passes through a yarn retention device (15), and then is wound onto a bobbin (B) as a package (P). The winding device (16) is supported on the frame (1) and has a friction roller (17) rotating counterclockwise in FIG.
) and a cradle arm (18) that rotatably holds the bobbin (B), and the arm (18) is connected to a shaft (19).
) is rotatably supported on the frame (1) and normally presses the Puffke-Q (p) against the friction roller (17), and the slab catcher (14) detects defects in the yarn (Y). When detected, or when the package (P
) is fully wound, a device (not shown) turns the package (P) to the left in FIG. 2 to separate the package (P) from the flexible roller (17). (20) is an exhaust pipe provided commonly to each unit (U) on the frame (1), and a blower (not shown) is connected to one end of the pipe (20). The above pipe has a draft device (ii) at one end.
) and the heating device (12) are connected to the suction pipes (21) and (22) which are opened in the vicinity, and the fluff generated in the draft device (11) etc. is removed from the suction pipe C2.
1) Exhaust air from (22) through the exhaust pipe (20).

The doffing device (6) on the traveling trolley (5) has a cradle opening lever (23) that releases the fully rolled package (P) from the cradle arm (18), and a new doffing device (6) on the above-mentioned crater arm (18). and an empty bobbin support arm (24) for supplying an empty bobbin (B) to the empty bobbin (B).

(25) is an empty bobbin supply device provided at the end of this spinning machine. When the package (P) becomes full in one of the spinning units ([J), a device (not shown) issues a doffing command signal to the traveling cart (5), and also clamps the full package. Cradle arm (18
) is rotated by a certain angle as described above, and the package (
P) is separated from the friction roller (17). The traveling trolley (5) picks up the full package (P) by the above signal.
), travels to the front of the spinning unit (U), stops, and fully turns the cradle opening lever (23) to open the cradle arm (18) and release the package
) onto a suitable plate or rod (2),
Next, the empty bobbin support arm (24) is rotated so that the empty bobbin (B) supported by the arm (24) is held between the cradle arms (18). After that, the traveling cart (5) performs the yarn splicing operation described later using the yarn splicing device @ (7), and then moves to the empty bobbin supply device (25) on the left end of Figure 1.
The robot travels to the point where it receives the empty bobbin (B) from the device (25) and prepares for the next doffing command.

The yarn splicing device (7) has a knock (27) and a heating device (12).
It is equipped with a suction pipe (28) that guides the needle thread spun from the package (P) to the knock (27), and a suction mouth (29) that guides the lower thread of the package (P) to the knock (27). When the slab catcher (14) detects a defective part of the yarn (Y) or when the doffing device (6) finishes the above-mentioned doffing operation, the traveling cart (5) moves in front of the spinning unit (υ). Stop at and remove the suction pipe (28
) and suction mouth (29) as shown by the dashed line in Fig. 2, guide the upper thread and lower thread to the knock (27) and splice each other, and then return the cradle arm (18) to its original position. Return to thread (Y) 5
Restart winding. Note that the empty bobbin (B) supplied to the cradle arm (18) by the doffing device (6)
In order to carry out the above-described yarn splicing, it is assumed that a small amount of yarn is wound around the bobbin (B) in advance.

Figure 3 shows the draft device (1) in the spinning unit (U).
1) shows a drive device that drives the delivery roller (13) and friction roller (17), respectively. The above-mentioned draft device (11), both rollers (13) (
17) and these drives are connected to each spinning unit (U)
Therefore, the rotational speed of each roller can be set to be different or equal for each unit (U). In FIG. 3, the heating device (12) consists of two nozzles (12a) (12b) that eject compressed air swirling in opposite directions to the fiber bundle (S) coming out of the drafting device (11), The yarn retention device (15) has an opening (3) at one end that receives the yarn (Y).
It is a hollow cylindrical body having a small hole (31) at the other end for pulling out the chain thread (Y). The yarn (Y) coming out of the delivery roller (13) is always present in a zigzag shape in a constant amount in the yarn retention device (15), and the yarn (Y) is supplied into the device (15) from the opening (3o). On the other hand, it is pulled out from the small hole (31) by the friction roller (17). (32
) is the yarn retention device (15) and the friction roller (17).
This is a tensor that may be installed between the The delivery roller (17) is rotationally driven by a motor (34) driven by an inverter (33), and the inverter (33) is connected to a main controller (34) including a microcomputer.
5) It is driven by a predetermined voltage. The main controller (35) further sends a command to another controller (37), and inverts the inverter (38).
The motor (39) is driven via the motor (39). The motor (39
) is transmitted via a gear box (40) to the back roller (8), middle roller (9), and front roller (10).
and the delivery roller (13), and each roller (
8) (9) (10) (ta) are rotated at different predetermined speeds. Each roller (8) (9) (to) constituting the draft device (11) has a peripheral speed that increases in the order of the front roller (1), the middle roller (9), and the pack roller (8), so that the sliver ( 8)
Each roller (8) (9) is drafted to a certain thickness.
(10) The circumferential speed ratio, that is, the draft ratio between fiber bundles (8
) or depending on the type of yarn (Y), and even if the draft ratio is constant, each of the above rollers (8) (9)
(10) are varied by a common magnification. Gearbox (
40) includes a large number of reconfigurable acceleration/deceleration gears that transmit the drive from the motor (39), and by rearranging the gears according to instructions from the controller (37)', each roller (8
) (9) (1o) The rotational speed of (13) can be freely set. (41) is a setting device including a keyboard etc. connected to the main controller (35). The rotation speeds of 8), (9), (10), (13), and (17) can be freely set and changed.

When you want to change the type of fiber bundle (S) for only one spinning unit (U) during spinning,
Or when you want to change the count of the yarn (Y) to be manufactured,
The operator operates the setting device (41) in the unit (U) and sets each roller (8) (9) (10) (1 [Yes] (
This is to prevent yarn breakage from occurring when the speed or tension of the fiber bundle (8) or the yarn (Y) wound around the fiber bundle (8) or the yarn (Y) becomes inconsistent. When the package (P) is cone-shaped, the tension of the thread (Y) being wound will be different between the large diameter part and the small diameter part of the package (P). ) is pulled out from the yarn retaining device (15) in a relatively large amount when it is wound around the large diameter portion, and only a relatively small amount is pulled out when it is wound around the small diameter portion. Therefore, the tension of the thread (■) wound around the package (P) is always constant, and the tension between the delivery roller (13) and the friction roller (
17) The yarn (Y) will not break due to increased tension.

FIG. 4 shows another example of a spinning unit (U) and its driving device, in this example a device for heating a fiber bundle (8) coming out of a drafting device (11), which is a device for ejecting a swirling air stream. one nozzle (12a), the nozzle (
A belt-type false-twisting device (42) is provided to false-twist the fiber bundle (8) coming out of the fiber bundle 12a) in a direction opposite to the air flow. The false twisting device (42) wraps two endless belts (43) around a driving pulley (44) and a driven pulley (45), respectively, and intersects each other in an X-shape, so that a fiber bundle (S) is formed between the intersecting surfaces. The drive pulley (44
) (44) causes both belts (43) (43) to run in different directions to false twist the fiber bundle (8). Drive pulleys (44) (44) of the false twisting device (42)
) is a motor (48) driven from the main controller (35) via a controller (46) and an inverter (47).
), and by changing the rotational speed, the number of twists to be applied to the fiber bundle (S) is changed and controlled. Also, between the strip retention device (15) and the friction roller (17), there is a feed roller (49) that pulls out the yarn (Y) from the device (15) at a predetermined speed.
and a tension sensor (50) that detects the tension of the thread (Y) coming out of the roller (49). The feed roller (49) is connected from the main controller (35) to the controller (51).
) and an inverter (52), the motor (53) drives the motor (53), and its speed is changed as appropriate. The thread (
The tension in Y) is converted to an appropriate voltage level by a converter (54) and supplied to the main controller (35). The main controller (35) is a yarn (Y) detected by the sensor (50).
) so that the tension of the feed roller (49) is always constant.
control the rotation of

Furthermore, a plurality of cans (6) storing fiber bundles (S) to be supplied to the drafting device (11) are placed at predetermined positions on a rotatable disk (55), and the disk (45) A motor (5) rotates this by a predetermined angle.
6) is provided. (57) is a sensor that measures the weight of the can at the fiber bundle supply position;
57) and the motor (56) are each connected to a controller (58) which is connected to the main controller (35).

When the can (a) at the supply position becomes empty, the sensor (57) detects this and sends a signal to the controller (58), which drives the motor (56). The rotating disk (45) is rotated by a predetermined angle to form a fiber bundle (S).
Another can (6) containing a sufficient amount of water is placed in the supply position.

Figure 5 (A) and (B) each show another example of the yarn retention device (15), and Figure 5 (0) shows two bins (60) and (60) fixed in position on the traveling path of the yarn (Y). Then, two rollers (62) are urged away from each other by springs (61) (61) between both pins (60) (60).
(62), the pin (60) and the roller (6
2) is engaged with a thread ('l). The spring (61) expands and contracts in response to fluctuations in the winding force of the thread (Y),
Fluctuations in the winding tension do not directly affect the yarn (Y) on the supply side. The same figure (b) shows a thread (Y) inside the hollow cylinder (63).
), a multi-stage wall plate (64) is formed protrudingly along the travel path of the
Since the threads (Y) stay in small amounts on each wall plate (64), it is possible to prevent the threads (Y) from becoming entangled with each other.

The various devices shown in FIGS. 3 and 4 are connected to each spinning unit (
U), and the draft ratio, spinning speed or winding speed of yarn (Y), etc. can be set separately for each spinning unit. It is acceptable to use only one device that can be used in common (for example, the main controller (35)
Set l1olj1\t,,h mm -1= +l
k (n11r n17 0, the setting device (41)
A specific spinning unit (U) may be designated as appropriate. Further, since the present invention is a spinning machine in which the draft device can be driven individually for each spinning unit, the present invention naturally includes a case where the above-mentioned spinning machine includes only one spinning unit.

As explained above, according to the present invention, it is possible to change the draft ratio or the speed of the drafted yarn for each spinning unit, so it is possible to manufacture different types of yarn for each spinning unit, and it is possible to A production system suitable for loft production can be realized.

[Brief explanation of the drawing]

Figure 1 is a front view of the spinning machine, Figure 2 is a cross-sectional view of the spinning machine, Figure 3 is a block diagram showing the driving device of the spinning machine, and Figure 4 is a front view of the spinning machine.
The figure is a block diagram showing another example of the above-mentioned drive device, and FIG.
(a) and (b) are diagrams each showing another example of the yarn retention device.

Claims (1)

[Claims] a drafting device for drafting a staple fiber bundle;
A spinning machine comprising a plurality of spinning units each including a heating device that heats the fiber bundle exiting the draft device and a winding device that winds the yarn obtained by the heating device, the spinning machine including the draft device A spinning machine characterized in that a driving device is provided independently for each unit.