JP6823965B2 - Spinning machine with drafting equipment arranged side by side - Google Patents

Description

The present invention is a spinning machine, particularly a ring spinning machine, comprising a number of side-by-side drafting machines for drafting fiber bundles, each of which has one inlet bottom roller and one intermediate bottom. For spinning machines that have rollers and outlet bottom rollers. The intermediate bottom roller is arranged between the inlet bottom roller and the outlet bottom roller in the traveling direction of the fiber bundle. The inlet bottom rollers arranged side by side form an inlet roller row, the intermediate bottom rollers arranged side by side form an intermediate roller row, and the outlet bottom rollers arranged side by side form an outlet roller row. Is forming. The inlet roller row has a shaft and a plurality of inlet bottom rollers are arranged on the shaft, and the intermediate roller row has a shaft and a plurality of intermediate bottom rollers are arranged on the shaft. The outlet roller row has a shaft, and a plurality of outlet bottom rollers are arranged on the shaft. These shafts may be rotated by a drive unit and torque is transmitted to the inlet bottom roller, intermediate bottom roller and outlet bottom roller. The drive unit has a first drive portion and a second drive portion, and the inlet roller row and the intermediate roller row are driven at the first drive portion and the second drive portion.

The draft device works to provide stretching to the fiber bundle (sliver). Draft equipment is used in a variety of spinning machines, such as ring spinning machines, air spinning machines and rough spinning machines. The draft device has at least one inlet roller pair, an intermediate roller pair, and an outlet roller pair. The fiber bundle first passes through the inlet roller pair, then the intermediate roller pair, and finally the outlet roller pair. Stretching occurs due to the ratio of peripheral velocities between different roller pairs. Preliminary stretching is achieved between the inlet roller pair and the intermediate roller pair. The main stretch is caused by the ratio of the peripheral velocities between the intermediate roller pair and the outlet roller pair.

The inlet roller pair has an inlet bottom roller and an inlet top roller. The intermediate roller pair has an intermediate bottom roller and an intermediate top roller. The outlet roller pair has an outlet bottom roller and an outlet top roller. The inlet bottom roller, the intermediate bottom roller, and the outlet bottom roller are arranged on the shafts, and are driven via these shafts. The inlet bottom rollers arranged side by side form an inlet roller row. The intermediate bottom rollers arranged side by side form an intermediate roller row. The outlet bottom rollers arranged side by side form an outlet roller row. The top rollers are held by corresponding devices, for example by support arms and load arms, pressed against the bottom rollers and entrained by the bottom rollers.

German Patented Invention No. 10137140 shows such a type of spinning machine. The illustrated spinning machine is a ring spinning machine equipped with draft devices on both sides. German Patent Invention No. 10137140 relates to a drive unit of a bottom roller. The ring spinning machine has a symmetrical structure on both sides. That is, an inlet roller row, an intermediate roller row, and an outlet roller row are provided on each side of the ring spinning machine. The drive is performed at both ends of the ring spinning machine. The drive units on both sides are connected to each other via a transmission device, which allows the same extension to be achieved on both sides. The drive between the inlet roller row and the intermediate roller row is performed on both sides of the ring spinning machine, which can reduce the twist of the shaft. It is also disclosed that only the intermediate roller row is driven on both sides of the machine and the inlet roller row is simply driven at one end. The largest torque is transmitted to the drive train of the intermediate rollers. This is because the intermediate roller guides the draft apron. As a result of the sliding guide of the draft apron through a detour mechanism such as a turning rail or a U-shaped tightening member, the twist in the intermediate roller is usually greater than in another drafting roller. Only in a short ring spinning frame can the second drive location provided at another end of the ring spinning machine be omitted. Further, German Patent Invention No. 10137140 also describes the possibility of dividing an intermediate roller row into two substantially identical shaft sections and driving both shaft sections at both ends of a ring spinning machine, respectively. ..

However, in a long machine, the drive of the roller trains at the two drive points provided at the ends of the machine is insufficient to reduce the twist to an acceptable extent. Therefore, from International Publication No. 2007057148, it is known that an auxiliary drive device having a relatively small output is arranged in addition to the main drive unit at both ends by distributing over the length of the roller row. In this case, the division of the work area is not changed. However, it takes time and effort to control the drive unit based on the different outputs of the main drive unit and the auxiliary drive unit.

Further, it is known that all roller rows are divided at the center of the machine and additional drive units are arranged corresponding to the drive units provided at the ends. However, this modified division of the work area is inconvenient.

Therefore, an object of the present invention is to improve the drive of the roller train while considering the reduced twist.

To solve this problem, the inlet roller row has a consistent shaft between the first drive and the second drive, and the intermediate roller row has the first and second drive. It has at least three shaft divisions between the two drive points, and the shaft divisions that are not connected to the first drive point and the second drive point are connected to another drive point. Has been done.

The present invention takes advantage of the fact that the largest torque is transmitted to the intermediate roller train. By dividing the intermediate roller train into at least three shaft compartments, the torque to be transmitted at the first and second drive points is clearly reduced. The smaller the torque, the smaller the twist. The inlet roller train, on the other hand, transmits a clearly smaller torque so that a consistent shaft can be used even in long spinning machines, where the permissible twist is not exceeded. Absent.

At the first drive location and the second drive location, one common motor for each of the inlet roller row and the intermediate roller row is correspondingly arranged. These motors are connected to the inlet roller row and the intermediate roller row via a transmission device.

Advantageously, the motor at the first drive location is driven by speed control in the frequency converter, and the motor at the second drive location is driven by the same frequency converter. When driving two motors in a frequency converter, mechanical connection of the motors is required to guarantee the constant velocity of the motors. In the present invention, the mechanical connection can be achieved in a simple form via a consistent shaft in the inlet roller row.

In an advantageous aspect according to the present invention, another motor is correspondingly arranged at another drive location. Advantageously, the motor has a smaller output than the main drive motor. Therefore, this motor can act on the shaft section without having to change the division of the work area. Certainly a unique frequency converter is needed for this motor. However, since this other motor is separated from the motors of the first drive point and the second drive point via the division of the intermediate roller row, the control of the motor can be easily realized. Advantageously, the shaft section of the intermediate roller train that is not connected to the first and second drive points is connected to this other motor via a transmission device.

According to a particularly advantageous aspect, the shaft section of the intermediate roller row that is not connected to the first drive location and the second drive portion is connected to the inlet roller row via the transmission device. This aspect has the advantage that the separate shaft section of the intermediate roller row does not require an additional drive unit. Based on the rather small drive torque of the inlet roller train, the inlet roller train can safely provide additional torque.

It has been found to be advantageous for the intermediate roller train to have exactly three divided shaft compartments between the first drive and the second drive. Shaft compartments in the intermediate roller train that are not connected to the first and second drive points are advantageously a quarter of the draft device between the first and second drive points. The driven portion of the shaft section is correspondingly arranged and connected to the first and second drive points of the draft device between the first drive point and the second drive point. Three-quarters of the driven parts are arranged correspondingly. This can cause the intermediate roller row to be feltly load-reduced and twisted. On the other side, another motor can be sized smaller, or the inlet roller train is lightly loaded.

The embodiment of the present invention shown in the drawings will be described in detail below.

It is a figure which shows the 1st Embodiment of the spinning machine which concerns on this invention. It is a figure which shows the 2nd Embodiment of the spinning machine which concerns on this invention.

FIG. 1 schematically shows the structure of a ring spinning machine according to the present invention. The drawings are limited to the parts relevant to the description. Therefore, in particular, the fiber bundle supply portion of the spindle and the ring rail are not shown. The drawings are limited to the arrangement of the draft device and the drive unit of the draft device. Note that in this case the drawings are not on scale.

The ring spinning machine illustrated in FIG. 1 is a double-sided ring spinning machine provided with draft devices on both sides. This ring spinning machine has a large number of draft devices 2 arranged side by side on each side. Of these draft devices 2, only two draft devices are shown in FIG. Spindles (not shown) are correspondingly arranged in each draft device 2. The draft device 2 and the spindle together form one work area.

The draft device 2 has an inlet roller pair, an intermediate roller pair, and an outlet roller pair. Of these roller pairs, only the inlet bottom roller 3, the intermediate bottom roller 4, and the outlet bottom roller 5 are shown in FIG. Further, the drawing of FIG. 1 suggests a draft apron 6. The draft apron 6 is wound around an intermediate bottom roller 4. The inlet bottom rollers 3 arranged side by side form an inlet roller row 7. The intermediate bottom rollers 4 arranged side by side form an intermediate roller row 8. The outlet bottom rollers 5 arranged side by side form an outlet roller row 9. On the other side of the machine, inlet roller rows 7', intermediate roller rows 8'and outlet roller rows 9'are arranged symmetrically with respect to the first side.

The inlet roller rows 7, 7'have one consistent shaft 22, 22', respectively. The outlet roller rows 9, 9'have one consistent shaft 26, 26', respectively. Each of these shafts 22, 22', 26, 26'consists of two sections. These two compartments are connected to each other via one thread threaded portion 27, 28, 27', 28', respectively. One compartment further consists of a plurality of shaft compartments, each of which is coupled to each other with a right-handed thread, and the other compartment is composed of a plurality of shaft compartments, each of which is coupled to each other with a left-handed thread. Consists of. Since the threaded threads achieve a tight coupling of multiple compartments, these compartments together form one consistent shaft. The intermediate roller rows 8, 8'have three separate shaft compartments 23, 24, 25 or 23', 24', 25', respectively.

The roller train is driven at two drive points 41 and 42 provided at both ends of the ring spinning machine. The outlet roller rows 9, 9'are driven by one common motor 10, 12 at each drive location 41, 42. The motors 10 and 12 are connected to the shafts 26 and 26'via the transmission devices 13 and 14, respectively. Both motors 10 and 12 are connected to a frequency converter (not shown). In this case, the motor 10 acts as a driving side motor. The motor 10 is speed controlled and therefore includes a resolver 11. The motor 12 is a driven side motor and does not have an inherent rotation speed control. Constant velocity is achieved by the shafts 26, 26'via a mechanical coupler.

The inlet roller row 7 and the intermediate roller row 8 are driven together at drive points 41 and 42 provided at both ends of the machine. For this purpose, motors 15 and 17 are arranged at both ends of the machine. The same motors 15 and 17 also drive the inlet roller row 7'and the intermediate roller row 8'on the other side of the ring spinning machine 1. The motor 15 is connected to the shafts 22, 22'of the inlet roller rows 7, 7'via the transmission device 18. The motor 17 is also connected to the shafts 22 and 22'of the inlet roller rows 7 and 7'via the transmission device 20. Therefore, both motors 15 and 17 are mechanically connected via shafts 22 and 22'. The motors 15 and 17 are similarly controlled via one common frequency converter (not shown). The motor 15 includes a resolver 16 and acts as a driving side motor. The motor 17 is a driven side motor.

The shaft division 23 of the intermediate roller row 8 is connected to the transmission device 18 or the motor 15 via the transmission device 19. The shaft division 25 of the intermediate roller row 8 is connected to the transmission device 20 or the motor 17 via the transmission device 21. The transmission devices 19 and 21 are formed as preliminary extension replacement gears. The replacement gears of the transmissions 19 and 21 can be replaced to accommodate pre-stretching. The shaft division 24 of the intermediate roller row 8 is not mechanically connected to the shaft divisions 23 and 25. The shaft division 24 is driven by another drive portion 43. In the embodiment shown in FIG. 1, an additional motor 29 drives the shaft section 24 via the transmission device 30. Since the motor 29 has a unique frequency converter, the rotation speed can be easily adapted to the modified pre-stretching. The intermediate roller row 8'on the other side of the ring spinning machine 1 is similarly configured. The shaft divisions 23'and 25'are driven via draft exchange gear devices 19' and 21'. The drive of the shaft section 24'is carried out via an additional motor 29'and a transmission device 30'.

In the illustrated embodiment, the shaft divisions 23 and 25 are respectively arranged with 3/4 driven portions of the draft device. That is, the shaft divisions 23 and 25 drive a driven portion of 3/4 of the draft device in total. In the shaft division 24, a driven portion of 1/4 of the draft device is correspondingly arranged. Correspondingly, at the drive location provided at the end of the machine, the drive torque that must be formed for the intermediate roller row 8 is reduced by a quarter. This also reduces twisting.

In terms of the total number of working locations on each side of the ring spinning machine 1 of 1920 spindles, 120 Nm of torque is applied to the shaft sections 23 and 25 of the intermediate roller row 8, respectively. A torque of 80 Nm is applied to the shaft division 24 in the middle. 35 Nm acts on the inlet roller row 7 from each of both drive sides. The drive torque of the inlet roller row 7 is clearly less than the drive torque of the intermediate roller row 8. The embodiment shown in FIG. 2 makes use of this fact.

The embodiment shown in FIG. 2 is fully consistent with the embodiment shown in FIG. Since the same reference numerals are used for the same constituent members, these constituent members will not be newly described. Only mention differences. The shaft divisions 24 and 24'of the intermediate roller rows 8 and 8'are connected to the shafts 22 and 22'at different drive points 43 via transmission devices 31 and 31', respectively. Therefore, a unique motor is not required for the shaft divisions 24, 24'. The transmission devices 31, 31'may simply correspond to the transmission devices 19, 19', 21 and 21'and be adaptable to the modified preliminary stretch ratio. The torque acting on the shafts 22 and 22'of the inlet roller rows 7 and 7'is increased to 75 Nm for each of the drive points 41 and 42. However, this also leaves the torque clearly lower than the 120 Nm torque that must be applied to the intermediate roller rows 8,8'at the end of the machine. This can achieve a good distribution of the required drive torque.

Claims (8)

A spinning machine (1), comprising a number of draft device arranged side by side for drafting the fiber bundle (2), the draft device (2), respectively one inlet bottom rollers (3) The intermediate bottom roller (4) has an intermediate bottom roller (4) and an outlet bottom roller (5), and the intermediate bottom roller (4) has the inlet bottom roller (3) and the outlet bottom roller (3) in the traveling direction of the fiber bundle. The inlet bottom rollers (3) arranged side by side with the 5) form an inlet roller row (7,7'), and the intermediate bottom rollers (3) arranged side by side form a row (7,7'). 4) forms an intermediate roller row (8,8'), and the outlet bottom rollers (5) arranged side by side form an outlet roller row (9,9'), and the inlet roller is formed. The row (7,7') has a shaft (22,22'), and a plurality of inlet bottom rollers (3) are arranged on the shaft (22,22'), and the intermediate roller row (8,8') has a shaft (23,23', 24,24', 25,25') on the shaft (23,23', 24,24', 25,25'). A plurality of intermediate bottom rollers (4) are arranged on the shaft, and the outlet roller row (9,9') has a shaft (26,26') on the shaft (26,26'). , A plurality of outlet bottom rollers (5) are arranged, and the shafts (22, 22', 23, 23', 24, 24', 25, 25', 26, 26') are rotated by a drive unit. The torque is then transmitted to the inlet bottom roller (3), the intermediate bottom roller (4) and the outlet bottom roller (5), and the drive unit is subjected to the first drive portion (41) and the second drive portion (41). It has a drive point (42), and at the first drive point (41) and the second drive point (42), the inlet roller row (7,7') and the intermediate roller row (8, In a spinning machine where 8') is driven,
The inlet roller row (7,7') has a consistent shaft (22,22') between the first drive location (41) and the second drive location (42). The intermediate roller row (8, 8') is divided into at least three shaft divisions (23, 8') between the first drive portion (41) and the second drive portion (42). A shaft section (24, 24') having 23', 24, 24', 25, 25') and not connected to the first drive location (41) and the second drive location (42). ) Is connected to another drive location (43), the spinning machine (1). The first drive location (41) and the second drive location (42) each have one common for the inlet roller row (7,7') and the intermediate roller row (8,8'). The spinning machine (1) according to claim 1, wherein the motors (15, 17) of the above are arranged correspondingly. The motor (15,17) has a transmission device (18,19,19', 20,21,21') in the inlet roller row (7,7') and the intermediate roller row (8,8'). The spinning machine (1) according to claim 2, which is connected via. The motor (15) of the first driving point (41) is driven by controlling the rotation speed in the frequency converter, and the motor (17) of the second driving point (42) has the same frequency conversion. The spinning machine (1) according to claim 2 or 3, which is driven in a vessel. The spinning machine (1) according to any one of claims 1 to 4, wherein another motor (29, 29') is correspondingly arranged at the other driving point (43). The shaft division (24, 24') of the intermediate roller row (8, 8') that is not connected to the first drive portion (41) and the second drive portion (42) is a transmission device (24, 24'). 30. The spinning machine (1) according to claim 5, which is connected to the other motor (29, 29') via the 30'). Claims 1 to 3 of the intermediate roller row, wherein the shaft section not connected to the first drive portion and the second drive portion is connected to the inlet roller row via a transmission device. The spinning machine (1) according to any one of the above. The intermediate roller row (8, 8') is exactly divided into three shaft divisions (23, 23') between the first drive point (41) and the second drive point (42). , 24, 24', 25, 25'), and is connected to the first drive point (41) and the second drive point (42) of the intermediate roller row (8, 8'). In the shaft division (24, 24') which is not provided, a quarter of the drive torque of the draft device between the first drive portion (41) and the second drive portion (42) is applied. Shora is and, said first driving portion (41) and said second of said shaft sections are connected to the drive portion (42) (23, 23 ', 25, 25'), said first the three quarters of the driving torque of the draft device is Shora, spinning according to any one of claims 1 to 7 between the the driving portion (41) a second driving portion (42) Machine (1).