CN218910632U

CN218910632U - Full-automatic high-speed drawing frame

Info

Publication number: CN218910632U
Application number: CN202223397797.2U
Authority: CN
Inventors: 刘戈; 暴志平; 刘发先; 李蔓蔓
Original assignee: Beijing Ainy Ele Mechanical Co ltd
Current assignee: Beijing Ainy Ele Mechanical Co ltd
Priority date: 2022-12-19
Filing date: 2022-12-19
Publication date: 2023-04-25
Anticipated expiration: 2032-12-19

Abstract

The utility model provides a full-automatic high-speed drawing frame, which comprises a feeding mechanism, a drafting mechanism, a compacting and cleaning mechanism and a slivering mechanism, wherein the feeding mechanism comprises a feeding roller and a feeding servo motor, the drafting mechanism comprises a first roller, a second roller, a third roller, a main servo motor and a roller supporting seat which are sequentially arranged from front to back, and two ends of the first roller, the second roller and the third roller are respectively arranged on the roller supporting seat; the main servo motor drives a strip discharging and bundling roller in the strip forming mechanism to operate through a first synchronous belt, and the strip discharging and bundling roller drives the first roller and the third roller to operate synchronously through a second synchronous belt; the third roller drives the second roller to synchronously operate through a third synchronous belt; the feeding servo motor drives the feeding roller to operate through a fourth synchronous belt, and the feeding roller drives the compaction cleaning mechanism to operate through a fifth synchronous belt. The utility model has high strip-out speed and can not burn out the bearing.

Description

Full-automatic high-speed drawing frame

Technical Field

The utility model relates to the technical field of textile equipment, in particular to a full-automatic high-speed drawing frame.

Background

The drawing frame has the functions of improving the internal structure of the sliver, improving the uniformity of long fragments of the sliver, reducing the uneven weight rate of the sliver, enabling fibers in the sliver to be straightened and parallel, reducing hooks, enabling the fineness of the sliver to meet the regulations, enabling raw materials of different types or different qualities to be uniformly mixed, and achieving the regulated mixing ratio.

The first generation drawing frame in China is a 1242 series drawing frame produced by Shenyang textile machinery factories in the fifty to sixty years, and the drawing speed is only 40 meters/minute; the second generation drawing frame is an A272 series drawing frame which starts to be produced in the middle of sixties, and the strip discharging speed is 150 meters/minute; representative of third generation drawing frames are the FA302, FA311 and the Taihe FA361 series, the strip-out speed of which can reach 500 meters/minute; various manufacturers then make various improvements to the drawing frame, such as adding short section autoleveling devices, improving the quality of the drawing units, etc., according to market needs. However, regarding the strip discharging speed, the design strip discharging speed of the existing strip discharging machine is about 600 m/min, and the actual speed is lower than the design strip discharging speed, mainly because when the strip discharging speed continues to increase, the temperature of the bearing and/or the leather roller can reach an unacceptable height to burn out, and the operation is stopped or the strip discharging quality is affected.

With the development of electromechanical equipment and control technology and the improvement of the drawing speed of other textile machinery, the drawing speed of the existing drawing frame cannot keep pace with the steps of other textile equipment, and the drawing speed of the drawing frame needs to be improved.

The modern textile technology 2021, 7-2 discloses a method for improving the drawing speed of a drawing frame, which suggests that the drawing speed can be improved by increasing the diameter of a front roller, and the feasibility of the method is simulated and verified by taking an FA322B drawing frame as an object. Finally, the conclusion is drawn: the rotating speed of the front roller of the drawing frame drafting structure is kept unchanged, the diameter of the front roller is increased, the strip discharging speed of the drawing frame can be effectively improved, the influence on strip discharging quality is small, and meanwhile, resonance and other phenomena cannot be caused by increasing the diameter of the front roller. For the drawing mechanism of the FA322B drawing frame, under the condition that the drawing quality is slightly reduced, the diameter of the front roller can be increased to 48mm, and under the condition that the rotating speed is kept unchanged, the drawing speed can be theoretically increased from 600 meters/min to 823 meters/min, the increasing amplitude is 37.17%, and the increasing amplitude theoretically brings considerable economic benefit for textile enterprises. But the basis for this method for increasing the strip-out speed is to reduce the draft quality.

Disclosure of Invention

In order to solve at least one of the technical problems, the utility model provides a full-automatic high-speed drawing frame, which can greatly increase the strip discharging speed without reducing the strip discharging quality and simultaneously avoid burning out phenomena caused by overhigh temperature of a bearing and a leather roller.

The full-automatic high-speed drawing frame comprises a feeding mechanism, a drafting mechanism, a compacting and cleaning mechanism and a slivering mechanism, wherein the feeding mechanism comprises a feeding roller and a feeding servo motor, the drafting mechanism comprises a first roller, a second roller, a third roller, a main servo motor and a roller supporting seat which are sequentially arranged from front to back, and two ends of the first roller, the second roller and the third roller are respectively arranged on the roller supporting seat; the main servo motor drives a strip discharging and bundling roller in the strip forming mechanism to operate through a first synchronous belt, and the strip discharging and bundling roller drives the first roller and the third roller to operate synchronously through a second synchronous belt; the third roller drives the second roller to synchronously operate through a third synchronous belt; the feeding servo motor drives the feeding roller to operate through a fourth synchronous belt, and the feeding roller drives the compaction cleaning mechanism to operate through a fifth synchronous belt.

Preferably, two ends of the first roller, the second roller and the third roller are respectively arranged on the roller supporting seat through deep groove ball bearings.

In any of the above embodiments, preferably, the fit tolerance of the first roller and the deep groove ball bearings at both ends thereof is 0-bit fit tolerance, the fit tolerance of the second roller and the deep groove ball bearings at both ends thereof is 0-bit fit tolerance, and the fit tolerance of the third roller and the deep groove ball bearings at both ends thereof is 0-bit fit tolerance.

In any of the above solutions, preferably, the fit tolerances between the deep groove ball bearings at the two ends of the first roller, the second roller and the third roller and the roller support stand are all 0-bit fit tolerances.

In any of the above-described modes, it is preferable that a first press roller and a second press roller are respectively provided above and in front of the first roller, a third press roller is provided above the second roller, and a fourth press roller is provided above the third roller.

In any of the above embodiments, the third roller, the second roller, and the first roller preferably operate at a linear velocity of 1:1.2:8.

In any of the above schemes, preferably, the roller support seat is disposed on a platform, the feeding servo motor is disposed on one side of the platform, which is close to the feeding roller, and the main servo motor is disposed on the platform, which is close to the strip-out bundling roller.

In any of the above schemes, preferably, the sliver output between the first roller and the first press roller enters the bundling pipe to be combined into a sliver, and the sliver passes through the sliver output bundling roller and then enters the sliver can through the tray motor.

In any of the above-mentioned schemes, preferably, the pressing cleaning mechanism is provided with a cleaning cloth, and the cleaning cloth is contacted with the first pressing roller, the second pressing roller, the third pressing roller and the fourth pressing roller by pressing down the pressing cleaning mechanism, so that sundries on the cleaning cloth are removed in the running process of the first pressing roller, the second pressing roller, the third pressing roller and the fourth pressing roller.

Preferably, in any of the above schemes, the full-automatic high-speed drawing frame is further provided with an automatic control mechanism, the automatic control mechanism comprises a PLC and a touch display screen, the speed of the strip discharging, the speed of the feeding roller, the speed of the first roller, the speed of the second roller, the speed of the third roller, the speed of the strip discharging and bundling roller, the speed of the feeding servo motor, the speed of the main servo motor and the speed of the tray motor are controlled by the touch display screen, and the PLC is used for automatically calculating the speeds of the feeding servo motor, the main servo motor and the tray motor according to the set strip discharging speed and controlling the feeding servo motor, the main servo motor and the tray motor to operate according to the calculated speeds.

The full-automatic high-speed drawing frame has the following beneficial effects:

the feeding roller is driven by a feeding servo motor, and then drives the compacting and cleaning mechanism; the strip-discharging bunching roller is driven by a main servo motor, the strip-discharging bunching roller drives the first roller and the third roller to operate, and the third roller drives the second roller to operate; the two ends of the first roller, the second roller and the third roller are arranged on the bearing support seat through deep groove ball bearings, and 0-bit matching tolerance is adopted for matching the inner ring and the outer ring of the deep groove ball bearings. Through the structural improvement, on one hand, the strip discharging speed can be improved, so that the strip discharging speed can reach 1200 meters/minute; on the other hand, the bearing can be prevented from being burnt out during high-speed operation. Through experiments, the temperature of the deep groove ball bearing does not exceed 50 ℃ at the strip outlet speed of 1000 meters per minute and the temperature of the first compression roller to the fourth compression roller does not exceed 75 ℃ when the deep groove ball bearing runs for 6 hours in a free-running mode; after the cotton sliver is operated for 3 minutes, the temperature of the first compression roller to the fourth compression roller reaches 55+/-1 ℃, the cotton sliver is stable, the cotton sliver is operated for 30 minutes again, the temperature of the compression roller is 55 ℃ at the highest temperature, the temperature is balanced, and the temperature of each deep groove ball bearing is not more than 45 ℃.

Drawings

Fig. 1 is a front view of a preferred embodiment of a fully automatic high speed drawing frame in accordance with the present utility model.

Fig. 2 is a top view of the embodiment of fig. 1 of a fully automatic high speed drawing frame in accordance with the present utility model.

Fig. 3 isbase:Sub>A cross-sectional view taken alongbase:Sub>A-base:Sub>A of the embodiment of fig. 2 of the fully automatic high speed drawing frame in accordance with the present utility model.

Fig. 4 is a left side view of the embodiment of fig. 1 of a fully automatic high speed drawing frame in accordance with the present utility model.

Fig. 5 is a right side view of the embodiment of fig. 1 of the fully automatic high speed drawing frame in accordance with the present utility model.

Fig. 6 is a bottom view of the embodiment of fig. 1 of the fully automatic high speed drawing frame in accordance with the present utility model.

Fig. 7 is a first perspective view of the embodiment of fig. 1 of a fully automatic high speed drawing frame in accordance with the present utility model.

Fig. 8 is a second perspective view of the embodiment of fig. 1 of a fully automatic high speed drawing frame in accordance with the present utility model.

Fig. 9 is a schematic view showing a transverse cross-sectional structure of a first roller of the embodiment shown in fig. 1 of the full-automatic high-speed drawing frame according to the present utility model.

Fig. 10 is a schematic view showing a longitudinal sectional structure of a first roller of the embodiment shown in fig. 1 of the full-automatic high-speed drawing frame according to the present utility model.

The device comprises a platform, a 2-touch display screen, a 3-main servo motor, a 4-first synchronous belt, a 5-strip-out bundling roller, a 6-first roller, a 7-bundling tube, an 8-second roller, a 9-third synchronous belt, a 10-third roller, a 11-feeding roller, a 12-second synchronous belt, a 13-fifth synchronous belt, a 14-fourth synchronous belt, a 15-feeding servo motor, a 16-tray motor, a 17-compaction cleaning mechanism, a 18-deep groove ball bearing, 191-first compression roller, 192-second compression roller, 193-third compression roller, 194-fourth compression roller and 20-roller support seat 20.

Detailed Description

The utility model will be described in more detail with reference to specific examples.

Example 1

As shown in fig. 1 to 10, a full-automatic high-speed drawing frame comprises a feeding mechanism, a drafting mechanism, a compacting and cleaning mechanism and a slivering mechanism, wherein the feeding mechanism comprises a feeding roller 11 and a feeding servo motor 15, the drafting mechanism comprises a first roller 6, a second roller 8, a third roller 10, a main servo motor 3 and a roller supporting seat 20 which are sequentially arranged from front to back, and two ends of the first roller 6, the second roller 8 and the third roller 10 are respectively arranged on the roller supporting seat 20; the main servo motor 3 drives a strip discharging and bundling roller 5 in the strip forming mechanism to operate through a first synchronous belt 4, and the strip discharging and bundling roller 5 drives the first roller 6 and the third roller 10 to operate synchronously through a second synchronous belt 12; the third roller 10 drives the second roller 8 to synchronously operate through a third synchronous belt 9; the feeding servo motor 15 drives the feeding roller 11 to operate through the fourth synchronous belt 14, and the feeding roller 11 drives the compacting and cleaning mechanism 17 to operate through the fifth synchronous belt 13.

The drawing frame is driven by adopting two motors, so that the number of parts of the drawing frame which are required to be driven by each motor is reduced, and compared with a structure that one motor drives the whole drawing frame through a plurality of belts, the transmission speed can be improved, and the strip discharging speed is further improved.

The two ends of the first roller 6, the second roller 8 and the third roller 10 are respectively arranged on the roller supporting seat 20 through deep groove ball bearings. The fit tolerance of the first roller 6 and the deep groove ball bearings at the two ends of the first roller is 0-bit fit tolerance, the fit tolerance of the second roller 8 and the deep groove ball bearings at the two ends of the second roller is 0-bit fit tolerance, and the fit tolerance of the third roller 10 and the deep groove ball bearings at the two ends of the third roller is 0-bit fit tolerance. The fit tolerances between the deep groove ball bearings at the two ends of the first roller 6, the second roller 8 and the third roller 10 and the roller support seat 20 are all 0-bit fit tolerances. Fig. 9 and 10 illustrate the first roller 6, both ends of which are provided on the roller support base 20 via deep groove ball bearings 18.

Compared with the needle roller bearing adopted in the prior art, the deep groove ball bearing has the advantages that the friction coefficient is small, the limit rotating speed is high, the first roller 6, the second roller 8 and the third roller 10 are arranged on the roller supporting seat 20 through the deep groove ball bearing, and 0-bit matching tolerance is adopted between the inner ring and the outer ring of the deep groove ball bearing, so that the bearing load is uniformly distributed and almost does not vibrate, and further the deep groove ball bearing can be well prevented from being burnt out due to high-speed running of the drawing frame.

In this embodiment, it is preferable that the drawing mechanism adopts a curve drawing mode, specifically, adopts a three-lower-four-upper curve drawing mode, more specifically, as shown in fig. 3 and 9, a first pressing roller 191 and a second pressing roller 192 are respectively disposed above and in front of the first roller 6, a third pressing roller 193 is disposed above the second roller 8, and a fourth pressing roller 194 is disposed above the third roller 10.

In the present exemplary embodiment, the third roller 10, the second roller 8 and the first roller 6 are preferably operated at a linear speed of 1:1.2:8. The linear speed ratio defines the draft ratio of the sliver and can lead to better sliver quality.

In this embodiment, it is preferable that the roller support 20 is disposed on the platform 1, the feeding servo motor 15 is disposed on a side of the platform 1 near the feeding roller 11, i.e., a rear portion of the platform 1, and the main servo motor 3 is disposed on the platform 1 near the strip-out bundling roller 5, i.e., a front portion of the platform 1. The sliver output between the first roller 6 and the first press roller 191 enters the bundling tube 7 to be combined into a sliver, and the sliver passes through the sliver outlet bundling roller 5 and then enters the sliver can through the tray motor 16. It is further preferred in this embodiment that the space disc motor 16 is preferably a disc motor invented by the same applicant as the present application, such as a coreless multi-layer disc motor disclosed in application No. 201520981145.4 or 201520981145.4, which is efficient and can meet the requirement of high strip-out speed. The crown block motor 16 is a motor for driving a crown block in a drawing frame.

In the present application, the direction in which the sliver advances in the full-automatic high-speed drawing frame is defined as the front. As shown in fig. 3, the advancing route of the slivers is shown by a curve B in fig. 3, the slivers enter the drawing frame through the feeding roller 11 and the press roller arranged above the feeding roller 11, and then are stretched by the third roller 10 and the fourth press roller 194, the second roller 8 and the third press roller 193, the first roller 6 and the second press roller 192, and the first press roller 191 in sequence; then enters the bundling pipe 7 to be combined into a strip, and then passes through the strip-out bundling roller 5 to the tray motor 16 and finally reaches the sliver can.

In this embodiment, it is preferable that a cleaning cloth is provided on the pressing cleaning mechanism 17, and the cleaning cloth is brought into contact with the first pressing roller 191, the second pressing roller 192, the third pressing roller 193, and the fourth pressing roller 194 by pressing down the pressing cleaning mechanism 17, so that impurities on the cleaning cloth are removed during the operation of the first pressing roller 191, the second pressing roller 192, the third pressing roller 193, and the fourth pressing roller 194.

The full-automatic high-speed drawing frame is further provided with an automatic control mechanism, the automatic control mechanism comprises a PLC and a touch display screen 2, the strip discharging speed, the rotating speed of the feeding roller 11, the rotating speed of the first roller 6, the rotating speed of the second roller 8, the rotating speed of the third roller 10, the rotating speed of the strip discharging bundling roller 5, the rotating speed of the feeding servo motor 15, the rotating speed of the main servo motor 3 and the rotating speed of the tray motor 16 are controlled through the touch display screen 2, and the PLC is used for automatically calculating the rotating speeds of the feeding servo motor 15, the main servo motor 3 and the tray motor 16 according to the set strip discharging speed and controlling the feeding servo motor 15, the main servo motor 3 and the tray motor 16 to operate according to the calculated rotating speeds. In this embodiment, the touch display 2 is preferably disposed on the platform 1 and near the main servomotor 3.

Since the feeding roller 11 is driven by the feeding servo motor 15, the feeding roller 11 drives the compacting and cleaning mechanism 17; meanwhile, as the strip-discharging and bundling roller 5 is driven by the main servo motor 3, the strip-discharging and bundling roller 5 drives the first roller 6 and the third roller 10 to operate, and the third roller 10 drives the second roller 8 to operate; the two ends of the first roller 6, the second roller 8 and the third roller 10 are arranged on the bearing support seat 20 through deep groove ball bearings, and 0-bit matching tolerance is adopted for matching the inner ring and the outer ring of the deep groove ball bearings; the structure is improved, so that the strip discharging speed can be increased to 1200 m/min on one hand; on the other hand, the bearing can be prevented from being burnt out during high-speed operation. Through experiments, the temperature of the deep groove ball bearing does not exceed 50 ℃ at the strip outlet speed of 1000 meters per minute and the temperature of the first compression roller to the fourth compression roller does not exceed 75 ℃ when the deep groove ball bearing runs for 6 hours in a free-running mode; after the cotton sliver is operated for 3 minutes, the temperature of the first compression roller to the fourth compression roller reaches 55+/-1 ℃, the cotton sliver is stable, the cotton sliver is operated for 30 minutes again, the temperature of the compression roller is 55 ℃ at the highest, the temperature reaches balance, and the temperature of each deep groove ball bearing is not more than 45 ℃ at the highest.

It should be noted that, only the improved part of the drawing frame is described in detail in the application, and the structures of other non-described parts can be set with reference to the prior art; the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting thereof; while the foregoing embodiments are illustrative of the present utility model in detail, those skilled in the art will appreciate that: the technical scheme described in the foregoing embodiments may be modified or some or all of the technical features may be replaced with equivalents, which do not depart from the scope of the technical scheme of the present utility model.

Claims

1. The utility model provides a full-automatic high-speed drawing frame, includes feeding mechanism, draft mechanism, compresses tightly clean mechanism and slivering mechanism, its characterized in that: the feeding mechanism comprises a feeding roller (11) and a feeding servo motor (15), the drafting mechanism comprises a first roller (6), a second roller (8), a third roller (10), a main servo motor (3) and a roller support seat (20) which are sequentially arranged from front to back, and two ends of the first roller (6), the second roller (8) and the third roller (10) are respectively arranged on the roller support seat (20); the main servo motor (3) drives a strip-discharging and bundling roller (5) in the strip forming mechanism to operate through a first synchronous belt (4), and the strip-discharging and bundling roller (5) drives the first roller (6) and the third roller (10) to operate synchronously through a second synchronous belt (12); the third roller (10) drives the second roller (8) to synchronously operate through a third synchronous belt (9); the feeding servo motor (15) drives the feeding roller (11) to operate through a fourth synchronous belt (14), and the feeding roller (11) drives the compaction cleaning mechanism (17) to operate through a fifth synchronous belt (13).

2. The fully automatic high speed drawing frame of claim 1, wherein: the two ends of the first roller (6), the second roller (8) and the third roller (10) are respectively arranged on the roller supporting seat (20) through deep groove ball bearings.

3. The fully automatic high speed drawing frame of claim 2, wherein: the fit tolerance of the first roller (6) and the deep groove ball bearings at the two ends of the first roller is 0-bit fit tolerance, the fit tolerance of the second roller (8) and the deep groove ball bearings at the two ends of the second roller is 0-bit fit tolerance, and the fit tolerance of the third roller (10) and the deep groove ball bearings at the two ends of the third roller is 0-bit fit tolerance.

4. A fully automatic high speed drawing frame as claimed in claim 3, wherein: the fit tolerances between the deep groove ball bearings at the two ends of the first roller (6), the second roller (8) and the third roller (10) and the roller support seat (20) are all 0-bit fit tolerances.

5. The fully automatic high speed drawing frame of claim 1, wherein: the front upper part and the right upper part of the first roller (6) are respectively provided with a first compression roller (191) and a second compression roller (192), the right upper part of the second roller (8) is provided with a third compression roller (193), and the right upper part of the third roller (10) is provided with a fourth compression roller (194).

6. The fully automatic high speed drawing frame of claim 1, wherein: the third roller (10), the second roller (8) and the first roller (6) are operated at a linear speed of 1:1.2:8.

7. The fully automatic high speed drawing frame of claim 1, wherein: the roller support seat (20) is arranged on the platform (1), the feeding servo motor (15) is arranged on one side, close to the feeding roller (11), of the platform (1, and the main servo motor (3) is arranged on the position, close to the strip-out bundling roller (5), of the platform (1).

8. The fully automatic high speed drawing frame of claim 5, wherein: the sliver output between the first roller (6) and the first compression roller (191) enters the bundling pipe (7) to be combined into a sliver, and the sliver passes through the sliver outlet bundling roller (5) and then enters the sliver can through the tray motor (16).

9. The fully automatic high speed drawing frame of claim 5, wherein: be provided with cleaning cloth on compressing tightly clean mechanism (17), through pushing down compress tightly clean mechanism (17) make cleaning cloth and first compression roller (191), second compression roller (192), third compression roller (193) and fourth compression roller (194) contact, and then clear away debris on first compression roller (191), second compression roller (192), third compression roller (193) and fourth compression roller (194) in-process of operation.

10. The fully automatic high speed drawing frame of claim 1, wherein: the automatic control mechanism comprises a PLC and a touch display screen (2), wherein the PLC is used for automatically calculating the rotating speeds of the feeding servo motor (15), the main servo motor (3) and the space disc motor (16) according to the set strip-out speed and controlling the feeding servo motor to operate according to the calculated rotating speeds.