阅读说明：本技术 一种熔体纺丝和卷绕纱线的方法 (method for melt spinning and winding yarn ) 是由 任宪明 杨旭东 李士刚 B·舒马赫 于 2018-07-19 设计创作，主要内容包括：本发明公开一种熔体纺丝和卷绕纱线的方法,聚合物熔体通过多个纺丝泵被输送至多个喷丝位的多个纺丝组件,所述纺丝组件将所述聚合物熔体分别挤出成多根纱线,所述纱线被卷绕成多个筒子,其中,一个所述喷丝位包括多个所述纺丝组件,清扫机器人受机器控制装置控制,以清扫所述喷丝位的纺丝组件。为了使得所有喷丝位在合理的时间内被自动清扫,其中一个清扫机器人负责清扫的多个喷丝位被分为若干喷丝位组,所述一个清扫机器人分别在一定清扫时长内,对所述若干喷丝位组依次清扫。(The invention discloses methods for spinning and winding yarn by melt, wherein polymer melt is delivered to a plurality of spinning packs of a plurality of spinning positions by a plurality of spinning pumps, the spinning packs extrude the polymer melt into a plurality of yarns respectively, the yarns are wound into a plurality of bobbins, wherein spinning positions comprise a plurality of spinning packs, and a cleaning robot is controlled by a machine control device to clean the spinning packs of the spinning positions, in order to automatically clean all the spinning positions in a reasonable time, the plurality of spinning positions which are cleaned by cleaning robots are divided into a plurality of spinning position groups, and the plurality of spinning position groups are cleaned by cleaning robots in sequence within cleaning time respectively.)

A method for melt spinning and winding a yarn, a polymer melt being supplied by a plurality of spinning pumps to a plurality of spinning packs at a plurality of spinning positions, said spinning packs extruding said polymer melt into a plurality of yarns, respectively, said yarns being wound into a plurality of bobbins, wherein of said spinning positions comprise a plurality of said spinning packs,

the cleaning robots are controlled by a machine control device to clean the spinning components of the spinning positions, wherein spinning positions which are cleaned by the cleaning robots are divided into a plurality of spinning position groups, and cleaning robots clean the spinning position groups in sequence within fixed cleaning time periods respectively.

2. The method of claim 1, wherein said machine control means activates a warning light when said machine control means detects that a set number or more of said spinning positions need to be cleaned simultaneously within a cleaning period of of said spinning position groups.

3. The method of claim 1, wherein the machine control device detects the number of yarn breakage or doffing and adjusts the cleaning sequence of the spinning positions according to the detection result.

4. The method of claim 1 wherein said machine control means adjusts the sequence of cleaning of or more of said spin positions when said machine control means detects that a set number of said spin positions require cleaning for a duration of cleaning of of said groups of spin positions.

5. The method of claim 4, wherein when said machine control means detects that there are more than or equal to a set number of said spinning positions to be cleaned within a cleaning period of said groups of spinning position groups, said machine control means advances or advances the cleaning sequence of said spinning positions to be cleaned within said cleaning period.

6. The method of claim 4 wherein said machine control means pushes said spinning positions to be cleaned near the end of said purge duration back to the next adjacent purge durations when said machine control means detects that there are more than or equal to a set number of said spinning positions to be cleaned near the end of said purge duration when said machine control means detects that there are nearly groups of said groups of spinnerets near the end of said purge duration.

7. The method of any of claims 2, 4, 5, and 6, wherein the set-point number is two or greater.

8. The method of any of wherein the sweep period value for each spin position is set to Z, the number of groups in the spin group is set to X, and the sweep duration value for each group of spin groups is the same and set to Y, wherein Z ranges from "X Y-Y" to "X Y + Y".

9. The method of any of claims , wherein the purging cycle of the plurality of groups of spinnerets is performed.

Technical Field

The invention relates to methods for melt spinning and yarn winding.

Background

In a melt spinning system, molten thermoplastic is spun through the spinneret orifices of the spinneret of a spin pack at constant pressure to form continuous filaments in actual melt spinning production, monomers or oligomers inevitably adhere to the spinneret surface of the spin pack and solidify under the influence of the cooling air flow to form impurities or coke that affect the quality of the spun filaments.

Disclosure of Invention

In order to solve the aforementioned problems occurring in the prior art, the present invention provides methods for melt spinning and winding yarn, and the objects of the present invention are achieved by the technical solutions listed below:

method for melt spinning and winding yarn, polymer melt is delivered to a plurality of spinning packs of a plurality of spinning positions through a plurality of spinning pumps, the spinning packs extrude the polymer melt into a plurality of yarns respectively, the yarns are wound into a plurality of bobbins, wherein, spinning positions comprise a plurality of spinning packs, a cleaning robot is controlled by a machine control device to clean the spinning packs of the spinning positions, wherein, spinning positions which are cleaned by the cleaning robot are divided into a plurality of spinning position groups, cleaning robots clean a plurality of spinning position groups in sequence within cleaning time length respectively.

Dividing the spinning positions into a plurality of spinning position groups in a uniform or non-uniform mode, and cleaning the spinning positions of spinning position groups by the cleaning robot within a preset cleaning time length, so that all the spinning positions are automatically cleaned within a reasonable time, and the condition that too many spinning positions are intensively waited for being cleaned is avoided.

When the machine control device detects that the spinning positions which are more than or equal to the set value number need to be cleaned simultaneously within the cleaning time length of spinning position groups, the machine control device can activate a warning lamp.

In order to avoid that more spinning positions are concentrated in cleaning time periods, so that cleaning cannot be completed in cleaning time periods, the machine control device can give an alarm when detecting that the spinning positions are concentrated in the cleaning time periods, and indicates that an operator intervenes to perform manual auxiliary cleaning.

The machine control device can adjust the cleaning sequence of the spinning positions by detecting the times of yarn breakage or doffing and according to the detection result.

The number of yarn breakages or the number of windings is an additional reference index for determining whether to perform the spinneret cleaning. And under the condition that the yarn breakage frequency or the yarn winding frequency is high, the machine control device identifies and improves the cleaning priority of the spinning position, and controls the cleaning robot to clean the spinning position earlier.

When the machine control device detects that the spinning positions with the number larger than or equal to the set value need to be cleaned within the cleaning time length of spinning position groups, the machine control device can adjust the cleaning sequence of or more spinning positions.

For the condition that more spinning positions are detected to be required to be processed, the spinning position cleaning sequence is advanced or pushed back, schemes are that in the cleaning time period, the cleaning of the spinning positions is advanced or retreated, so that the cleaning work is not concentrated in time periods, and in the second scheme, in a special condition, for example, when cleaning time periods are close to the end, all cleaning can not be completed, and the spinning positions are pushed back to the next adjacent cleaning time periods.

Based on the solution, when the machine control device detects that the spinning positions with the number greater than or equal to the set value need to be cleaned in the cleaning time length of spinning position groups, the machine control device can advance or retard the cleaning sequence of the spinning positions needing to be cleaned in the cleaning time length.

Based on the second scheme, when the machine control device detects that the spinning positions which are more than or equal to the set value number need to be cleaned when the cleaning time length of spinning position groups is close to the end, the machine control device can push the spinning positions which need to be cleaned when the cleaning time length is close to the end back to the next adjacent cleaning time lengths.

Wherein the set value number is two or more.

The cleaning period is determined by the group value of the spinning bit group and the cleaning time value, and specifically, the relationship between the cleaning period value and the group value of the spinning bit group and the cleaning time value is as follows: the cleaning period value of each spinning position is set to be Z, the group number value of each spinning position group is set to be X, the cleaning time length value of each spinning position group is the same and set to be Y, and the range of Z is equal to X Y-Y to X Y + Y.

Wherein the sweeping of the groups of spinneret bits is performed cyclically.

Drawings

FIG. 1 schematically illustrates a front view of an apparatus for carrying out the melt spinning and yarn winding methods of the present invention;

FIG. 2 schematically illustrates a partial side view of an apparatus for carrying out the melt spinning and yarn winding methods of the present invention when the cleaning robot is in the cleaning position and before cleaning begins;

fig. 3 schematically shows a partial side view of an apparatus for carrying out the melt spinning and yarn winding methods of the invention when the cleaning robot is in the cleaning position and cleaning is started.

FIG. 4 is a schematic diagram of embodiments of the allocation rules of the machine control to the spinning positions;

FIG. 5 is a schematic diagram of another embodiments of the assignment rule of the machine control to the spinning positions in a particular case.

Detailed Description

As shown in fig. 1, the apparatus for carrying out the present invention comprises a spinning device comprising a spinning beam 23 having a heating function, a plurality of spinning positions are maintained on the lower side of the spinning beam 23, only two spinning positions 1.1, 1.2 are shown in the drawing, in this embodiment, the spinning positions 1.1, 1.2 each comprise five spinning packs corresponding to five spinning dies 1.1.1-1.1.5, 1.2.1-1.2.5, two spinning pumps 2 are provided above the spinning beam 23, which are designed as pumps, each of the spinning pumps 2 is connected to of the spinning positions 1.1, 1.2 via a separate melt duct, the melt duct and the spinning positions 1.1, 1.2 are provided within the spinning beam 23 to ensure that the melt is maintained in a molten state before being extruded, the melt is delivered to the spinning packs via the melt duct under the pressure generated by the spinning pump 2 to control the extrusion of the melt from the spinning packs through a cooling pump 353, the spinning pump controlling the extrusion of the melt from the spinning packs.

For drawing the filament bundle, two godets 7 are provided below the spinning positions 1.1, 1.2. Fig. 1 shows only the godet 7 of the spinning position 1.1. The filament bundle partially surrounds the two godets 7. The godet rollers 7 are driven by godet roller drives 8, respectively.

For receiving the drawn filament bundle, a winding device 14 is used to wind the filament bundle at the spinning position 1.1 or 1.2, the winding device 14 is designed with two bobbin shafts 11, 12, the two bobbin shafts 11, 12 are held on a rotatable turret 13, so that the bobbin shafts 11, 12 can be alternately in a winding state, thereby ensuring continuity of yarn winding, the bobbin shaft 11 is driven by a bobbin shaft driver 11.1, the bobbin shaft 12 is driven by a bobbin shaft driver 12.1, the turret 13 is driven by a turret driver 13.1, in order to obtain cross-wound bobbins, a traverse device 9 is arranged in the inlet area of the winding device 14, the traverse device 9 provides traverses for each yarn, the traverse device 9 is driven by a traverse device driver 9.1, the bobbin shaft driver 11.1, the bobbin shaft driver 12.1, the turret driver 13.1, the turret driver 9.1 controls the spinning position 1 via a winding control unit 15, the spinning device 14 is controlled in the same winding position as the spinning position 1.1, as the spinning device 14 is shown in fig. 1.

For controlling and monitoring the drives of the spinning pump 2 and the winding device 14, the device is also provided with a machine control device 16. The machine control device 16 is preferably formed by a microprocessor in the form of a PC. The machine control device 16 is connected to the spinning pump control unit 4 and the winding control unit 15.

The machine control unit 16 further comprises a detection unit 17. the detection unit 17 communicates with the winding control unit 15 to obtain data such as the number of windings.

The apparatus for carrying out the invention is further provided with a cleaning robot 19 which is movable in parallel in the arrangement direction of the spinnerets 1.1.1-1.1.5. the cleaning robot 19 is movably arranged on a moving guide 20 which is parallel to the arrangement direction of the spinnerets 1.1.1-1.1.5. in the non-operating state, the cleaning robot 19 is located at a base station outside the spinning area, which is the position to which the cleaning robot 19 finally returns after each cleaning operation, the length of the moving guide 20 can be selected to cover all spinnerets in the spinning position, and the height of the moving guide 20 is lower than that of the spinnerets 1.1.1-1.1.5 in the front view of fig. 1.

Fig. 2 schematically shows a partial side view of an apparatus for implementing the present invention when the cleaning robot 19 moves to the position of the spinning position 1.1 and before cleaning starts, the cleaning robot 19 is located at a position close to the outside below the spinning beam 23 so that the cleaning robot 19 does not interfere with a normally spun filament during a non-cleaning time, traveling wheels 22 are installed at both sides of the upper end of the cleaning robot 19, the traveling wheels 22 are driven by a motor not shown, the traveling wheels 22 are movable along the length direction of the moving guide 20 under the driving of the motor, a telescopic arm 25 which can be controlled to be telescopic is provided at the side facing the filament of the cleaning robot 19, a base 26 is provided at the end of the , a second telescopic arm 27 which can be controlled to be telescopic is provided in the base 26 as shown in fig. 3, a cleaning element 21 is provided at the end of the second telescopic arm 27, and the cleaning robot 19 is controlled by the control unit 18.

Fig. 3 schematically shows a partial side view of spinning machines with equipment for melt spinning and yarn winding when the cleaning robot 19 has moved to the position of the spinning position 1.1 and cleaning has started, when the cleaning robot 19 reaches the spinning position to be cleaned, as shown in fig. 3, the telescopic arm 25 is extended outwards by means of a not shown drive until the cleaning element 21 is pushed to a position directly below the spin pack with the spinneret 1.1.1, the second telescopic arm 27 is extended upwards by means of a not shown drive so that the cleaning element 21 can be brought into contact with the lower surface of the spinneret 1.1.1, the cleaning element 21 can preferably consist of a rotatable copper brush and a silicone oil-jetter, the cleaning element 21 can be controlled to perform the sequence spatula- -second silicone oil-jetter.

Preferably, cleaning robots can be provided with a plurality of cleaning elements 21, the number of cleaning elements 21 being the same as the number of spinnerets in spinning positions, so that the cleaning robot can clean all spinnerets in spinning positions simultaneously.

spinning positions of the cleaning robot are divided into several spinning position groups, each of cleaning robots clean the spinning position groups in sequence within cleaning periods, in the exemplary embodiment shown in fig. 4, the cleaning robot 19 is responsible for 12 spinning positions in total, each of which is spinning position 1.1 to 1.12, the spinning positions 1.1 to 1.12 are assigned by the machine control device 16, and preferably, each spinning position group includes the same number of spinning positions, in this exemplary embodiment, all spinning positions 1.1 to 1.12 are divided into 3 spinning position groups, each of which includes four spinning positions for spinning positions G1, G2 and G3., wherein the spinning positions 1.1, 1.3, 1.6 and 1.9 are assigned to spinning position group G1, and the spinning positions 1.2, 1.4, 1.12 and 1.9 are assigned to spinning position 1.3, 1.6 and 1.9 are assigned to spinning position 1.677, 368 and 368.

Of course, the spinning positions may be distributed in other reasonable ways according to the needs of the user of the machine, and are not limited to the uniform distribution.

Assuming sweeps of all spinning positions were required within days, the length of each sweep is Y, which is preferably the same for this example, Y is 8 hours.

The machine control device 16 and the robot control unit 18 are connected to a shared ethernet network so that the machine control device 16 can control the cleaning robot 19 in the aforementioned distribution manner, specifically, the cleaning robot 19 is controlled to sequentially clean all spinning positions of the spinning position group G1, namely, the spinning positions 1.1, 1.3, 1.6 and 1.9, within the first 8 hours, the cleaning robot 19 sequentially cleans all spinning positions of the spinning position group G2 within the next 8 hours, the cleaning robot 19 sequentially cleans all spinning positions of the spinning position group G3 within the next 8 hours, all 12 spinning positions 1.1-1.12 are cleaned times within 24 hours, and then the cleaning operation is cyclically repeated for the previous 24 hours.

Therefore, if the time interval between the end of the sweep and the next sweeps of spin bits is defined as the sweep period and the sweep period value is Z, then the sweep period value Z for each spin bit ranges from "X Y-Y" to "X Y + Y" based on the control scheme described above.

Taking a spinning group G1 as an example, in cleaning time lengths Y of a spinning group G1, the cleaning robot 19 cleans spinning positions 1.1, 1.3, 1.6 and 1.9 according to a preset sequence, under the control of the machine control device 16, the cleaning robot 19 can adjust the cleaning sequence of or more spinning positions under specific conditions, wherein the specific conditions specifically comprise that 1, two or more spinning positions need to be cleaned by the cleaning robot 19 within the same time, 2, the detection unit 17 of the winding control unit 15 detects that the number of windings of the winding device 14 corresponding to a certain spinning position reaches a set value or the number of yarn breakage times reaches a preset value and needs to be cleaned within a short time, and 3, two or more spinning positions need to be cleaned when the cleaning time lengths Y are concentrated.

Upon encountering the th particular instance, the machine control device 16 may activate a warning light, indicating operator intervention, simultaneously with the cleaning by the cleaning robot 19.

In the face of the second special case, the machine control device 16 can treat such spinning positions as the spinning positions with higher priority, for example, when the second special case occurs at spinning position 1.9, the machine control device 16 gives priority to the sweeping times to the th spinning position in the present sweeping time length Y, namely, before the order of spinning positions 1.1.

In the face of the third particular case, the machine control 16 can adjust such spinning positions to the next purge durations Y. As shown in FIG. 5, the machine control 16 pushes back the spinning position 1.9 in the spinning group G1 to the purge duration Y of the spinning group G2. in the next cycle, the spinning position 1.9 is purged back into the purge duration Y of the spinning group G1 to which it belongs as assigned by the machine control 16, thus, the machine control 19 is set to allow for push-back purging between adjacent purge durations Y in the third particular case.

The cleaning robot has the outstanding characteristic that the cleaning robot is used for automatically cleaning the spinneret plate in a mode of meeting the technical characteristics of melt spinning.