CN113215692A

CN113215692A - Rotor spinning machine

Info

Publication number: CN113215692A
Application number: CN202110028698.8A
Authority: CN
Inventors: 泽田晴稔; 重山昌澄
Original assignee: Murata Machinery Ltd
Current assignee: Murata Machinery Ltd
Priority date: 2020-01-21
Filing date: 2021-01-11
Publication date: 2021-08-06
Anticipated expiration: 2041-01-11
Also published as: JP2021113378A; CN113215692B

Abstract

A rotor spinning machine is provided with a plurality of spinning units, a delivery pipe (108), an inlet pipe (104), a plurality of branch pipes (106), and a plurality of demisters (air cleaning filters) (132). The plurality of spinning units generate a yarn using a twist air flow. In the delivery pipe (108), compressed air supplied from one end side flows from the other end side toward the plurality of spinning units. The inlet pipe (104) is connected to an air pressure-feeding device for supplying compressed air to the plurality of spinning units, and the compressed air is supplied from one end side by the air pressure-feeding device. The plurality of branch pipes (106) branch from the other end side of the inlet pipe (104) and are connected to one end side of the delivery pipe (108). The demisters (132) are provided in the branch pipes (106), respectively.

Description

Rotor spinning machine

Technical Field

The invention relates to an air spinning machine.

Background

Conventionally, a spinning machine (air-jet spinning machine) is known which forms a whirling air flow by compressed air and generates a yarn by the whirling air flow. Japanese patent laid-open publication No. 2018-076607 discloses such a spinning machine.

The spinning machine disclosed in Japanese patent laid-open publication No. 2018-076607 comprises: a spinning unit having an air spinning device, and an air pipe. The air pipe guides air pressure-fed from the air pressure-feeding device through the air supply pipe to the air-jet spinning device.

In a spinning machine as disclosed in japanese patent application laid-open No. 2018-076607, generally, mist in air is removed before the air is supplied to an air-jet spinning device. Specifically, an air cleaning filter such as a demister is provided in the air supply pipe. However, the pressure feeding of air has a problem that the pressure loss in the air cleaning filter is large. In this regard, it is considered that the improvement can be made if the air cleaning filter is made larger, but there is a limit to the increase in size of the air cleaning filter.

Disclosure of Invention

The invention aims to provide a rotor spinning machine which can reduce pressure loss caused by an air purifying filter without enlarging the size of the air purifying filter.

The rotor spinning machine of the present invention comprises a plurality of spinning units, a 1 st pipe, a 2 nd pipe, a plurality of 3 rd pipes, and a plurality of compressed air cleaning filters. The plurality of spinning units generate a yarn by a whirling air flow. The 1 st pipe flows compressed air supplied from one end side toward the plurality of spinning units from the other end side. The 2 nd pipe is connected to a compressed air supply source for supplying compressed air to the plurality of spinning units, and the compressed air is supplied from one end side by the compressed air supply source. The plurality of the 3 rd pipes are branched from the other end of the 2 nd pipe and connected to one end of the 1 st pipe. The compressed air purification filters are provided in the 3 rd pipes, respectively.

Thus, when compressed air is supplied to a plurality of spinning units, the pressure loss caused by the air cleaning filter can be reduced without increasing the size of the air cleaning filter unit. Further, the progress of the reduction in the capacity (clogging) of each of the plurality of air cleaning filters can be delayed, and the replacement cycle of each air cleaning filter can be extended.

In the above rotor spinning machine, it is preferable that the capacity of each of the plurality of compressed air purifying filters is 2 times or less of the total supply flow rate of the compressed air supplied from the compressed air supply source.

Thereby, each air cleaning filter can be appropriately used.

In the above rotor spinning machine, it is preferable that each of the plurality of compressed air purifying filters has a capacity of 1000L/min to 20000L/min.

This enables each air cleaning filter to function satisfactorily.

The above-described air spinning machine preferably includes a 1 st pressure sensor and a 2 nd pressure sensor. The 1 st pressure sensor detects a pressure in the 1 st pipe. The 2 nd pressure sensor detects a pressure in the 2 nd pipe.

Thus, the amount of deposition of the removed substances on the air cleaning filter can be estimated based on the detection values of the 1 st pressure sensor and the 2 nd pressure sensor. Therefore, the overall performance (the degree of clogging) of the air cleaning filter at the present time can be managed.

In the above rotor spinning machine, each of the plurality of compressed air purifying filters is preferably a demister.

This enables efficient removal of mist from the air.

In the above rotor spinning machine, the plurality of compressed air purification filters preferably include a 1 st compressed air purification filter and a 2 nd compressed air purification filter which are disposed adjacent to each other. The 1 st compressed air purification filter and the 2 nd compressed air purification filter are arranged along an imaginary horizontal plane. The 1 st compressed air purifying filter is disposed at one point in the middle of a straight line portion parallel to the virtual horizontal plane, the straight line portion being included in the 3 rd pipe. The 1 st compressed air purification filter is arranged to overlap the 2 nd compressed air purification filter when viewed along the straight portion.

Thus, space saving can be achieved with respect to the installation of the plurality of compressed air purification filters.

The above-described rotor spinning machine preferably includes a drive source and a housing section. The drive source drives a drive member of the spinning unit. The storage section stores the drive source. The compressed air purification filters are accommodated in the accommodation section.

This enables efficient arrangement of a plurality of compressed air purification filters.

In the above rotor spinning machine, it is preferable that the plurality of compressed air purifying filters be members of the same type.

This makes it possible to share the maintenance work, and therefore, the workability can be improved.

In the above rotor spinning machine, the number of the spinning units is preferably 48 or more.

This makes it possible to satisfactorily supply the compressed air to the plurality of spinning units via the compressed air purification filter.

In the above rotor spinning machine, the number of the plurality of compressed air purifying filters is preferably 2 to 4.

Thus, the compressed air purifying filter can be efficiently applied to the rotor spinning machine.

The above-described rotor spinning machine preferably includes a plurality of opening/closing members. The opening/closing member changes the opening/closing state of a portion of each of the 3 rd pipes on the upstream side of the compressed air purification filter.

Thus, even when the upstream side of the compressed air purification filter is changed to the closed state in at least 13 rd pipe among the plurality of 3 rd pipes and the maintenance of the compressed air purification filter is performed, the upstream side of the compressed air purification filter in the remaining 3 rd pipe is opened, and the compressed air is supplied to the spinning unit to perform the spinning by the spinning unit. Therefore, the operation efficiency of the spinning unit can be improved.

In the above rotor spinning machine, the spinning unit preferably includes a rotor spinning device. The air spinning device includes a fiber guide section, a nozzle body, and a hollow guide shaft body. The fiber guide portion guides the fiber bundle. The nozzle body forms a spinning chamber into which the fiber bundle guided by the fiber guide is introduced, and forms a nozzle through which the compressed air injected to generate a whirling air flow in the spinning chamber passes. The hollow guide shaft body guides the fiber bundle that has passed through the spinning chamber to the outside.

In this way, in the spinning chamber, the spun yarn is generated by twisting the fiber bundle with the whirling air flow generated by the compressed air having passed through the plurality of compressed air purifying filters, and therefore the quality of the generated spun yarn can be improved.

Drawings

Fig. 1 is a front view showing the entire structure of a rotor spinning machine according to embodiment 1 of the present invention.

Fig. 2 is a side view of the spinning unit and the yarn splicing cart.

Fig. 3 is a side sectional view showing the configuration of the air-jet spinning device and its periphery.

Fig. 4 is a diagram showing the structure of the compressed air supply unit.

FIG. 5 is a perspective view of a plurality of demisters.

FIG. 6 is a side view of a plurality of mist eliminators.

Fig. 7 is a perspective view showing an installation state of a plurality of demisters.

Fig. 8 is a view showing a partial configuration of a compressed air supply unit according to embodiment 2 of the present invention.

Fig. 9 is a view showing a partial configuration of a compressed air supply unit according to embodiment 3 of the present invention.

Detailed Description

Next, a rotor spinning machine 1 according to embodiment 1 of the present invention will be described with reference to fig. 1 and 2.

As shown in fig. 1, the air-jet spinning machine 1 includes a blower case 3, a power box 5, a plurality of spinning units 7, and a yarn splicing cart (work cart) 9. The plurality of spinning units 7 are arranged in a row along a predetermined direction.

A blower 11 and the like functioning as a negative pressure source are disposed in the blower case 3.

The power box 5 is provided with a drive source, a central control device 13, a display unit 15, and an operation unit 17, which are not shown.

The central control device 13 centrally manages and controls the respective parts of the rotor spinning machine 1. As shown in fig. 2, the central control device 13 is connected to a unit control unit 19 provided in each spinning unit 7 via a signal line, not shown. In the present embodiment, each spinning unit 7 includes the unit control section 19, but a predetermined number (for example, 2 or 4) of spinning units 7 may share one unit control section 19.

The display unit 15 can display information related to the setting contents for the spinning units 7 and/or the states of the spinning units 7. The operator can perform setting for the spinning unit 7 by operating the operation unit 17.

As shown in fig. 2, each spinning unit 7 mainly includes a draft device 21, an air-jet spinning device 23, a yarn accumulating device 25, and a winding device 27, which are arranged in this order from upstream to downstream. Here, "upstream" and "downstream" mean upstream and downstream in the traveling direction of the sliver 32, the fiber bundle 34, and the spun yarn 30 when the spun yarn (yarn) 30 is wound.

The draft device 21 is provided near the upper end of a frame 36 provided in the rotor spinning machine 1. The draft device 21 includes 4 draft roller pairs. The 4 draft roller pairs are a rear roller pair 41, a third roller pair 43, an intermediate roller pair 45, and a front roller pair 47 arranged in this order from upstream to downstream. The intermediate roller pair 45 is provided with a tangential belt 49 for each roller.

The draft device 21 is configured to generate a fiber bundle 34 by sandwiching and conveying a sliver 32 supplied from a sliver box (not shown) between rollers of each draft roller pair, and thereby drawing (drafting) the sliver to a predetermined fiber amount (or thickness). The fiber bundle 34 generated by the draft device 21 is supplied to the air-jet spinning device 23.

The air-jet spinning device 23 twists the fiber bundle 34 drafted by the draft device 21 by a whirling air flow to generate the spun yarn 30. Specifically, as shown in fig. 3, the air-jet spinning device 23 includes a 1 st holder 51 and a 2 nd holder 52. The 1 st holder 51 has a fiber guide portion 53 and a nozzle body 54. The 2 nd bracket 52 has a hollow guide shaft body 55.

The fiber guide 53 guides the fiber bundle 34 drafted by the draft device 21 into the air-jet spinning device 23. The fiber guide portion 53 is provided with a fiber introduction port 56 and a guide needle 57. The fiber bundle 34 drafted by the draft device 21 is introduced into the fiber guide 53 from the fiber inlet 56, wound around the yarn guide needle 57, and guided into the spinning chamber 59.

The nozzle body 54 is formed with a plurality of nozzles 58. The nozzle body 54 forms a spinning chamber 59 together with the fiber guide portion 53 and the hollow guide shaft body 55. The air-jet spinning device 23 discharges compressed air (air) supplied from a unit pipe 114 described later from the nozzle 58 into the spinning chamber 59, and applies a whirling airflow to the fiber bundle 34 in the spinning chamber 59. The guide needle 57 may be omitted and the downstream end of the fiber guide portion 53 may have the function of the guide needle 57.

A yarn passage 60 is formed in the axial center of the hollow guide shaft body 55. One end of the fibers of the fiber bundle 34 is waved around the front end of the hollow guide shaft body 55 by the compressed air jetted from the nozzle 58. The fiber bundle 34 is then guided as the spun yarn 30 through the yarn path 60 from a yarn outlet, not shown, on the downstream side to the outside of the air-jet spinning device 23.

The yarn accumulating device 25 draws out the spun yarn 30 generated by the air-jet spinning device 23. The yarn accumulating device 25 includes a yarn accumulating roller 62 and a motor 63.

The yarn accumulating roller 62 is rotationally driven by a motor 63. The yarn accumulating roller 62 winds the spun yarn 30 around its outer peripheral surface and temporarily accumulates the spun yarn. The yarn accumulating roller 62 rotates at a predetermined rotational speed with the spun yarn 30 wound around the outer peripheral surface, and thereby pulls out the spun yarn 30 from the air-jet spinning device 23 at a predetermined speed.

In this way, the yarn accumulating device 25 can temporarily accumulate the spun yarn 30 on the outer peripheral surface of the yarn accumulating roller 62, and thus functions as a kind of buffer for the spun yarn 30. This eliminates a problem (e.g., loosening of the spun yarn 30) caused by a difference in the spinning speed and the winding speed (the traveling speed of the spun yarn 30 wound into the package 73 described later) in the air-jet spinning device 23 for some reason.

A yarn monitoring device 65 is provided between the air-jet spinning device 23 and the yarn accumulating device 25. The spun yarn 30 generated by the air-jet spinning device 23 passes through the yarn monitoring device 65 before being accumulated by the yarn accumulating device 25.

The yarn monitoring device 65 monitors the quality (thickness, etc.) of the traveling spun yarn 30 by a light-transmitting sensor, and detects a yarn defect (a portion where the thickness of the spun yarn 30 is abnormal, foreign matter, etc.) included in the spun yarn 30. When detecting a yarn defect of the spun yarn 30, the yarn monitoring device 65 transmits a yarn defect detection signal to the unit control section 19. The yarn monitoring device 65 is not limited to a light-transmitting sensor, and may monitor the quality of the spun yarn 30 using a light-reflecting sensor or a capacitance-type sensor, for example.

Upon receiving the yarn defect detection signal from the yarn monitoring device 65, the unit control section 19 stops the driving of the air-jet spinning device 23 and/or the draft device 21, thereby cutting the spun yarn 30. That is, the air-jet spinning device 23 has a function as a cutting section for cutting the spun yarn 30 when the yarn monitoring device 65 detects a yarn defect. The spun yarn 30 may be cut by a cutter.

The winding device 27 includes a cradle arm 67, a winding drum 68, and a traverse guide 69. The swing arm 67 is supported to be swingable about the support shaft 70, and rotatably supports a bobbin 71 (i.e., a package 73) for winding the spun yarn 30. The winding drum 68 rotates in a winding direction to drive the package 73 to rotate by rotating in contact with the outer peripheral surface of the bobbin 71 or the package 73. The winding device 27 reciprocates the traverse guide 69 by a drive motor (drive source) 166 described later, and drives the winding drum 68 by an electric motor (not shown). Thus, the winding device 27 winds the spun yarn 30 around the package 73 while traversing the spun yarn 30.

As shown in fig. 1, a rail 81 is disposed in the frame 36 of the rotor spinning machine 1 along the direction in which the plurality of spinning units 7 are arranged. The joint carriage 9 is configured to be capable of traveling on the rail 81. Thereby, the yarn splicing cart 9 can move relative to the plurality of spinning units 7. The yarn splicing cart 9 travels to the spinning unit 7 where the yarn breakage occurs, and performs yarn splicing operation for the spinning unit 7.

The joint carriage 9 includes traveling wheels 83. As also shown in fig. 2, the yarn splicing cart 9 further includes a yarn splicing device 85, a yarn catching unit (a suction pipe 87 and a suction nozzle 89), and a cart control unit 91.

The suction pipe 87 generates a suction air flow at its tip, thereby sucking and catching the spun yarn 30 fed from the air-jet spinning device 23. The suction nozzle 89 generates a suction airflow at its leading end, thereby sucking and catching the spun yarn 30 from the package 73 supported by the winding device 27. The suction pipe 87 and the suction nozzle 89 rotate while catching the spun yarn 30, thereby guiding the spun yarn 30 to a position where it can be introduced into the yarn splicing device 85.

The yarn splicing device 85 splices the spun yarn 30 from the air-jet spinning device 23 guided by the suction pipe 87 and the spun yarn 30 from the package 73 guided by the suction nozzle 89. In the present embodiment, the splicer device 85 is a splicer device that splices yarn ends with each other by a flow of whirling air. The splicer device 85 is not limited to the splicer device described above, and a mechanical knotter or the like may be used, for example. The yarn splicing cart 9 may connect the spun yarns 30 by splicing without providing the yarn splicing device 85. That is, the yarn splicing cart 9 may be configured to pull out the spun yarn 30 from the package 73 and convey the spun yarn to the air-jet spinning device 23 in the reverse direction, and then start the draft operation of the draft device 21 and the spinning operation of the air-jet spinning device 23, thereby bringing the spun yarn 30 into the continuous state again.

The carriage control unit 91 is configured to include a known computer such as a CPU, ROM, and RAM, which are not shown. The carriage control unit 91 controls the operation of each unit provided in the joint carriage 9, thereby controlling the joint work performed by the joint carriage 9.

Next, a structure for supplying compressed air to each spinning unit 7 in the rotor spinning machine 1 will be described with reference to fig. 4.

As shown in fig. 4, the rotor spinning machine 1 includes a compressed air supply unit 100. The compressed air supply unit 100 includes an inlet pipe (2 nd pipe) 104, a plurality of branch pipes (3 rd pipe) 106, a delivery pipe (1 st pipe) 108, a spinning pipe 112, and a unit pipe 114.

The inlet pipe 104 is connected at one end to an air pressure feeding device (compressed air supply source) 118. The inlet pipe 104 is configured to allow the compressed air sent from the air pressure-sending device 118 to flow from the other end side to the plurality of branch pipes 106.

The air pressure feeding device 118 is installed in a predetermined place (factory or the like) where the rotor spinning machine 1 is installed. The air pressure-feed device 118 is, for example, an electric compressor that drives an electric motor to pressurize and feed air.

The plurality of branch pipes 106 are connected to the other end of the inlet pipe 104 at one end. The plurality of branch pipes 106 branch from the other end side of the inlet pipe 104. The plurality of branch pipes 106 are arranged in parallel with each other. The plurality of branch pipes 106 are configured to allow a part of the compressed air from the inlet pipe 104 to flow therethrough, and the compressed air flows from the other end side toward the delivery pipe 108.

As described above, the delivery pipe 108 is connected at one end side to the other end side of each of the plurality of branch pipes 106. The delivery pipe 108 merges the other ends of the plurality of branch pipes 106. The delivery pipe 108 collects and circulates the compressed air from the plurality of branch pipes 106. The compressed air flows from the other end side of the delivery pipe 108 toward the spinning pipe 112.

The spinning pipe 112 is connected to the other end side of the delivery pipe 108. The spinning pipe 112 is supplied with compressed air from the delivery pipe 108. The spinning pipe 112 extends along the direction in which the spinning units 7 are arranged.

The unit pipe 114 is connected to the spinning pipe 112. The compressed air from the spinning pipe 112 flows to the spinning unit 7 through each unit pipe 114. The unit pipes 114 are provided with the same number as the number of spinning units 7, and 1 is provided for each spinning unit 7. The unit pipe 114 corresponding to each spinning unit 7 is connected to the spinning pipe 112 at one end side and connected to the air-jet spinning device 23 of the spinning unit 7 at the other end side.

A carriage supply pipe 120 is connected to the delivery pipe 108. The carriage supply pipe 120 branches from the delivery pipe 108. The carriage supply pipe 120 is configured to be connectable to the joint carriage 9. Thereby, a part of the compressed air sent out from the air pressure feeding device 118 flows toward the joint carriage 9 via the sending pipe 108 and the carriage supply pipe 120. The compressed air supplied from the cart supply pipe 120 to the joint cart 9 is used for example for joints in the joint device 85.

The compressed air supply unit 100 includes a regulator 124. The regulator 124 is provided on the downstream side of the connection point with the carriage supply pipe 120 in the delivery pipe 108. The regulator 124 can adjust the pressure of the compressed air (spinning pressure) supplied from the delivery pipe 108 to each spinning unit 7. The compressed air whose pressure has been adjusted by the regulator 124 is supplied from the delivery pipe 108 to the spinning unit 7 via the spinning pipe 112 and the unit pipe 114.

The compressed air supply unit 100 includes a filter unit 130. The filter unit 130 is provided in the plurality of branch pipes 106. The filter unit 130 includes a plurality of demisters (compressed air cleaning filters) 132. The demister 132 is provided at 1 for each branch pipe 106. The demister 132 separates particulate matter in the passed compressed air from the compressed air. This makes it possible to supply the clean compressed air from which the particulate matter has been removed to the regulator 124 and further to the spinning unit 7.

A supply valve 142 is provided upstream of the filter unit 130 in the direction in which the compressed air flows. The supply valve 142 changes the open/close state of the inlet pipe 104. The supply valve 142 is opened and closed by an operator. The operator opens the supply valve 142 during operation of the rotor spinning machine 1. The opening and closing of supply valve 142 may be controlled by central control device 13.

Next, the filter unit 130 will be described with reference to fig. 4, 5, 6, and 7.

The filter unit 130 is applied to the plurality of branch pipes 106, and includes a plurality of demisters 132. The plurality of demisters 132 are provided in the same number as the plurality of branch pipes 106. As described above, the demister 132 is provided for 1 branch pipe 106. In the present embodiment, the number of the plurality of branch pipes 106 is 2. Correspondingly, the number of the plurality of demisters 132 is also 2.

Specifically, as shown in fig. 4, 2 branch pipes 106 each including a 1 st branch pipe 106A and a 2 nd branch pipe 106B are provided as the plurality of branch pipes 106. Therefore, the plurality of demisters 132 includes 2 demisters (1 st compressed air purification filter) 132A and 2 nd demisters (2 nd compressed air purification filter) 132B.

The cross-sectional area of the flow path of the air formed in the branch pipe 106 is substantially the same or the same in all of the plurality of branch pipes 106. The distance of the air flow path from the connection point with the inlet pipe 104 to the connection point with the delivery pipe 108 in the branch pipe 106 is also formed to be substantially the same or the same in all of the plurality of branch pipes 106. The number of the plurality of branch pipes 106 and the number of the plurality of demisters 132 can be arbitrarily selected.

The 1 st demister 132A is provided in the 1 st branch pipe 106A. Specifically, the 1 st branch pipe 106A has 2 bent portions, and a straight portion having an appropriate length is formed between the 2 bent portions. The 1 st demister 132A is disposed at one point in the middle of the straight portion. The 1 st demister 132A removes particulate matter from the compressed air flowing through the air flow path formed in the 1 st branch pipe 106A. The 2 nd demister 132B is provided in the 2 nd branch pipe 106B. Specifically, the 2 nd branch pipe 106B has a curved portion, and a straight portion having an appropriate length is formed between the curved portion and a portion where the 2 nd branch pipe 106B is connected to the 1 st branch pipe 106A. The 2 nd demister 132B is disposed at one point in the middle of the straight portion. The 2 nd demister 132B removes particulate matter from the compressed air flowing through the air flow path formed in the 2 nd branch pipe 106B. The straight portion of the 1 st branch pipe 106A in which the 1 st demister 132A is disposed and the straight portion of the 2 nd branch pipe 106B in which the 2 nd demister 132B is disposed are parallel to each other.

The capacity of each of the 1 st demister 132A and the 2 nd demister 132B is 2 times or less of the total supply flow rate of the compressed air supplied from the air pressure-feeding device 118. In the present embodiment, the capacity of each of the 1 st demister 132A and the 2 nd demister 132B is 1000L/min to 20000L/min. The capacity can be selected to an arbitrary value according to the total supply flow rate of the compressed air. In the present embodiment, the 1 st demister 132A and the 2 nd demister 132B have the same capacity, but may have different capacities from each other.

In the present embodiment, the 1 st mist eliminator 132A and the 2 nd mist eliminator 132B are both fine mist separators. Considering that the mist separators are of the same type, the oil mist separators are of the same type, and the mist separators are of different types, the 1 st mist eliminator 132A and the 2 nd mist eliminator 132B are of the same type in the present embodiment. Generally, the fine mist separator and the oil mist separator require different maintenance work, but according to the present embodiment, the same maintenance work can be performed for 2 demisters 132.

As shown in fig. 5, the 1 st defogger 132A and the 2 nd defogger 132B are provided to extend in one direction (vertical direction) and have a predetermined width in a direction perpendicular to the vertical direction. The 1 st demister 132A and the 2 nd demister 132B are arranged at a predetermined interval on an imaginary horizontal plane extending substantially perpendicular to the vertical direction.

The 1 st demister 132A and the adjacent 2 nd demister 132B are arranged on substantially the same imaginary horizontal plane. As shown in fig. 6, the 1 st demister 132A is arranged so as to overlap the 2 nd demister 132B when viewed in the direction of the straight portion of the 1 st branch pipe 106A in which the 1 st demister 132A is arranged (the direction of the arrow 152 in fig. 5). That is, the 1 st demister 132A and the 2 nd demister 132B are provided in an alternate pattern.

The 1 st demister 132A and the 2 nd demister 132B are housed in the housing section 160 of the rotor spinning machine 1 in such an arrangement. Specifically, the rotor spinning machine 1 includes a housing 160 as shown in fig. 7. The housing 160 is formed in a hollow box shape by appropriately combining and fixing a plurality of elongated frame members. The housing portion 160 includes a plate-like member attached to the frame member, and the display portion 15 and the operation portion 17 are provided on the plate-like member.

In addition to the 1 st defogger 132A and the 2 nd defogger 132B, a drive motor (drive source) 166 for driving the traverse guide 69 (drive member of the spinning unit 7) of the winding device 27 is housed in the internal space 162 of the housing section 160. The 1 st demister 132A and the 2 nd demister 132B are disposed below the internal space 162 of the housing 160. The drive motor 166 is also disposed below the internal space 162 of the housing 160. In the present embodiment, the drive motor 166 is disposed below and on the front side of the internal space 162, and the defogger 132 is disposed below and on the rear side of the internal space 162. Other members may be disposed below the internal space 162. Above the internal space 162, for example, the drive sources of the front roller pair 47 and the intermediate roller pair 45 and the central control device 13 are housed.

In the present embodiment, the internal space 162 of the housing 160 also houses all of the 1 st branch pipes 106A and all of the 2 nd branch pipes 106B provided for the 1 st demister 132A and the 2 nd demister 132B, respectively. The 1 st demister 132A, the 2 nd demister 132B, the 1 st branch pipe 106A, and/or the 2 nd branch pipe 106B are appropriately supported by the frame member of the housing section 160.

With such a configuration, when compressed air is supplied from the air pressure-feed device 118 to the inlet pipe 104, the compressed air branches from the inlet pipe 104 to the plurality of branch pipes 106, that is, the 1 st branch pipe 106A and the 2 nd branch pipe 106B. A part of the compressed air flowing to the 1 st branch pipe 106A passes through the 1 st demister 132A and then flows to the delivery pipe 108. A part of the compressed air flowing to the 2 nd branch pipe 106B passes through the 2 nd demister 132B and then flows to the delivery pipe 108.

In the process of flowing the compressed air through the 1 st branch pipe 106A and the 2 nd branch pipe 106B, the particulate matter in the compressed air is removed by the 1 st demister 132A and the 2 nd demister 132B, respectively, and at least a part of the compressed air is purified. When the compressed air flowing through each branch pipe 106 reaches the delivery pipe 108, the compressed air merges at one end of the delivery pipe 108. Further, the compressed air flows from the delivery pipe 108 to the spinning pipe 112.

As described above, the rotor spinning machine 1 of the present embodiment includes the plurality of spinning units 7, the delivery pipe 108, the inlet pipe 104, the plurality of branch pipes 106, and the plurality of demisters 132 (the 1 st demister 132A and the 2 nd demister 132B). The plurality of spinning units 7 generate a yarn by using the whirling air flow. The delivery pipe 108 is configured to flow the compressed air supplied from one end side toward the plurality of spinning units 7 from the other end side. The inlet pipe 104 is connected to an air pressure feeding device 118 for supplying compressed air to the plurality of spinning units 7, and the compressed air is supplied from one end side by the air pressure feeding device 118. The plurality of branch pipes 106 branch from the other end of the inlet pipe 104 and are connected to one end of the delivery pipe 108. The demisters 132 are provided in the branch pipes 106, respectively.

Thus, when the compressed air is supplied to the plurality of spinning units 7, the pressure loss caused by the demister 132 can be reduced without increasing the size of the demister 132 alone. In other words, energy saving of the rotor spinning machine 1 can be achieved. Further, the progress of the reduction in the capacity (clogging) of each of the plurality of demisters 132 can be delayed, and the replacement cycle of each demister 132 can be extended.

In the rotor spinning machine 1 of the present embodiment, the capacity of each of the plurality of demisters 132 is 2 times or less of the total supply flow rate of the compressed air supplied from the air pressure-feed device 118.

Thus, each demister 132 can be used appropriately.

In the rotor spinning machine 1 of the present embodiment, the capacity of each of the plurality of demisters 132 is 1000L/min to 20000L/min.

This enables each demister 132 to function satisfactorily.

In the rotor spinning machine 1 of the present embodiment, the plurality of demisters 132 include a 1 st demister 132A and a 2 nd demister 132B arranged adjacent to each other. The 1 st demister 132A and the 2 nd demister 132B are arranged along an imaginary horizontal plane. The 1 st demister 132A is disposed at one point in the middle of the straight portion parallel to the virtual horizontal plane (specifically, the straight portion of the 1 st branch pipe 106A) of the branch pipe 106. The 1 st demister 132A is arranged to overlap the 2 nd demister 132B when viewed along the straight portion.

This can save space for installing the plurality of defoggers 132.

The air spinning machine 1 of the present embodiment includes a drive motor 166 and a housing 160. The driving motor 166 drives the traverse guide 69 of the winding device 27 in the spinning unit 7. The storage section 160 stores the drive motor 166. The plurality of demisters 132 are housed in the housing 160.

This enables the plurality of demisters 132 to be efficiently arranged.

In the rotor spinning machine 1 of the present embodiment, the plurality of demisters 132 are the same type of members.

In the rotor spinning machine 1 of the present embodiment, the spinning unit 7 includes the rotor spinning device 23. The air spinning device 23 includes a fiber guide 53, a nozzle body 54, and a hollow guide shaft body 55. The fiber guide 53 guides the fiber bundle 34. The nozzle body 54 is formed with a spinning chamber 59 into which the fiber bundle 34 guided from the fiber guide 53 is introduced, and a nozzle 58 through which compressed air ejected to generate a whirling air flow in the spinning chamber 59 passes. The hollow guide shaft body 55 guides the fiber bundle 34 having passed through the spinning chamber 59 to the outside.

Thus, in the spinning chamber 59, the spun yarn 30 is generated by twisting the fiber bundle 34 with the whirling air flow generated by the compressed air having passed through the plurality of demisters 132, and therefore the quality of the generated spun yarn 30 can be improved.

Next, embodiment 2 will be explained. In the description of the present embodiment, the same or similar components as those of the above-described embodiment are denoted by the same reference numerals in the drawings, and the description thereof may be omitted.

In the present embodiment, as shown in fig. 8, a pressure sensor is provided for the filter unit 130. Specifically, the pressure sensor includes a 1 st pressure sensor 172 and a 2 nd pressure sensor 174. The 1 st pressure sensor 172 is disposed on the downstream side of the filter unit 130. The 2 nd pressure sensor 174 is provided on the upstream side of the filter unit 130.

The 1 st pressure sensor 172 is located downstream of the plurality of branch pipes 106. The 1 st pressure sensor 172 is provided in the delivery pipe 108. The 1 st pressure sensor 172 detects the pressure in the delivery pipe 108. The 1 st pressure sensor 172 is connected to the central control device 13. The 1 st pressure sensor 172 detects the pressure in the delivery pipe 108 at an appropriate timing, and outputs the detected value to the central control device 13.

The 2 nd pressure sensor 174 is located upstream of the plurality of branch pipes 106. The 2 nd pressure sensor 174 is provided in the inlet pipe 104. The 2 nd pressure sensor 174 detects the pressure in the inlet pipe 104. The 2 nd pressure sensor 174 is connected to the central control device 13. The 2 nd pressure sensor 174 detects the pressure in the inlet pipe 104 at an appropriate timing, and outputs the detected value to the central control device 13.

With such a configuration, the central control device 13 estimates the amount of accumulation in the plurality of demisters 132 (the 1 st demister 132A and the 2 nd demister 132B) with respect to the particulate matter (removed matter) removed by the filter unit 130 based on the difference between the detection value of the 1 st pressure sensor 172 and the detection value of the 2 nd pressure sensor 174.

When the deposition amount of the removed substances exceeds a predetermined value, the central control device 13 displays notification contents of the occurrence of an unallowable clogging in the plurality of demisters 132 or the like on the display unit 15. The deposition amount of the removed substance estimated by the central control device 13 can be displayed on the display unit 15 when the operator performs an appropriate operation of the operation unit 17.

As described above, the rotor spinning machine 1 according to the present embodiment includes the 1 st pressure sensor 172 and the 2 nd pressure sensor 174. The 1 st pressure sensor 172 detects the pressure in the delivery pipe 108. The 2 nd pressure sensor 174 detects the pressure in the inlet pipe 104.

Thus, the deposition amount of the removed substances with respect to the plurality of demisters 132 in the filter unit 130 can be estimated based on the detection values of the 1 st pressure sensor 172 and the 2 nd pressure sensor 174, respectively. Therefore, the performance of the plurality of demisters 132 as a whole at the present time (the degree of clogging), that is, the performance of the filter unit 130 can be managed.

Next, embodiment 3 will be explained. In the description of the present embodiment, the same or similar components as those of the above-described embodiment are denoted by the same reference numerals in the drawings, and the description thereof may be omitted.

In the present embodiment, as shown in fig. 9, a plurality of plugs (opening/closing members) 182 are provided for each of the plurality of branch pipes 106. The 1 plug 182 is disposed upstream of the demister 132 provided in each branch pipe 106. Specifically, as the plug 182, a 1 st plug 182A and a 2 nd plug 182B are provided.

The 1 st plug 182A is provided in the 1 st branch pipe 106A. The 1 st pin 182A is disposed upstream of the 1 st demister 132A in the 1 st branch pipe 106A. By operating the 1 st plug 182A, the open/close state of the 1 st branch pipe 106A on the upstream side of the 1 st demister 132A can be changed.

The 2 nd plug 182B is provided in the 2 nd branch pipe 106B. The 2 nd plug 182B is disposed upstream of the 2 nd demister 132B in the 2 nd branch pipe 106B. By operating the 2 nd plug 182B, the open/close state of the 2 nd branch pipe 106B on the upstream side of the 2 nd demister 132B can be changed.

In the present embodiment, the operation of the 1 st plug 182A is performed by the operator. The operation of the 2 nd plug 182B is also performed by the operator. Further, the central control device 13 may control the operations of the 1 st plug 182A and the 2 nd plug 182B.

With such a configuration, when the portion of the 1 st branch pipe 106A on the upstream side of the 1 st demister 132A is closed by the 1 st pin 182A, the flow of the compressed air from the 1 st branch pipe 106A to the delivery pipe 108 via the 1 st demister 132A can be blocked by the 1 st pin 182A. On the other hand, when the 1 st pin 182A is used to open the portion of the 1 st branch pipe 106A upstream of the 1 st demister 132A, the flow of the compressed air from the 1 st branch pipe 106A to the delivery pipe 108 through the 1 st demister 132A can be permitted. The 2 nd plug 182B functions in the same manner in the 2 nd branch pipe 106B. During operation of the rotor spinning machine 1, at least 1 of the branch pipes 106 among the plurality of branch pipes 106 is set to an open state.

As described above, the rotor spinning machine 1 according to the present embodiment includes the plurality of plugs 182. The plug 182 changes the open/close state of the portion of each branch pipe 106 on the upstream side of the demister 132. Specifically, the rotor spinning machine 1 includes a 1 st pin 182A and a 2 nd pin 182B. The 1 st plug 182A changes the open/closed state of the portion of the 1 st branch pipe 106A on the upstream side of the 1 st demister 132A. The 2 nd plug 182B changes the open/closed state of the portion of the 2 nd branch pipe 106B on the upstream side of the 2 nd demister 132B.

Thus, even when the upstream side of the demister 132 is changed to the closed state in at least 1 of the plurality of branch pipes 106 and the demister 132 is maintained, the upstream side of the remaining branch pipe 106 is opened, and compressed air is supplied to the spinning unit 7, and spinning by the spinning unit 7 can be performed. Therefore, the operation efficiency of the spinning unit 7 can be improved.

While the preferred embodiments of the present invention have been described above, the above configuration can be modified as follows, for example. The following modifications and the above embodiments can be combined as appropriate.

The number of the plurality of demisters 132 can be arbitrarily selected, but is preferably 2 to 4. In this case, the plurality of demisters 132 can be efficiently applied to the rotor spinning machine 1.

The plurality of demisters 132 (the 1 st demister 132A and the 2 nd demister 132B) may be different types of parts. For example, the capacity of the 1 st demister 132A and the 2 nd demister 132B may be different. The plurality of demisters 132 are preferably of the same type from the viewpoint of management and maintenance.

The installation state of the plurality of defoggers 132 may be a state in which they can be accommodated in the accommodation portion 160. For example, when the plurality of demisters 132 include the 1 st demister 132A and the 2 nd demister 132B as in the above-described embodiment, the 1 st demister 132A and the 2 nd demister 132B may be disposed in a vertically aligned state or may be vertically aligned and arranged in a staggered manner according to the internal space 162 of the housing 160.

The 1 st pressure sensor 172 may be provided in plural and arranged upstream of the demister 132 provided in each branch pipe 106. In this case, the 2 nd pressure sensor 174 is also provided in plurality and is disposed downstream of the demister 132 provided in each branch pipe 106. This allows the accumulation amount of the removed substances to be estimated independently for the plurality of demisters 132. Therefore, the performance (the degree of clogging) of each demister 132 at the current time can be managed.

The number of the plurality of spinning units 7 is not particularly limited, but is preferably 96 to 600. The number of the plurality of spinning units 7 is more preferably 96 to 200. Even when a plurality of spinning units 7 are arranged in this manner, compressed air can be satisfactorily supplied to each spinning unit 7 through the demister 132.

The compressed air supply unit 100 may be provided with the 1 st pressure sensor 172 and the 2 nd pressure sensor 174, and a plurality of plugs 182 (the 1 st plug 182A and the 2 nd plug 182B).

Instead of the above configuration, the air-jet spinning device 23 may include a pair of air-jet nozzles that twist the fiber bundle in opposite directions to each other.

When the amount of deposition of the removed substances exceeds a predetermined value, notification of this occurrence, or the occurrence of an impermissible clogging of the plurality of defoggers 132, may be performed by lighting a lamp provided in the power box 5 with a predetermined color, instead of being displayed on the display unit 15, and the notification method is not particularly limited.

In the above embodiment, each device is arranged to wind the spun yarn 30 supplied from the upper side on the lower side in the height direction of the rotor spinning machine 1. However, each device may be arranged to wind the spun yarn supplied from the lower side on the upper side.

In the spinning unit 7, the yarn accumulating device 25 has a function of drawing out the spun yarn 30 from the air-jet spinning device 23, but the spun yarn 30 may be drawn out from the air-jet spinning device 23 by a delivery roller and a nip roller. When the spun yarn 30 is drawn out from the air-jet spinning device 23 by the delivery roller and the nip roller, a slack eliminating tube using a suction air flow, a mechanical dancer roller, or the like may be provided instead of the yarn accumulating device 25.

In the rotor spinning machine 1, at least one of the lower rollers of the draft device 21 and the traverse guide 69 are driven by power from each drive source of the power box 5 (that is, the plurality of spinning units 7 are shared). However, each part of the spinning unit 7 (for example, the draft device 21, the air-jet spinning device 23, the winding device 27, and the like) may be driven independently for each spinning unit 7.

In the rotor spinning machine 1, the plurality of spinning units 7 are arranged along one surface of the machine body, but the plurality of spinning units 7 may be arranged along the surface on the opposite side.

In view of the above teachings, it should be apparent that many modifications and variations of the present invention are possible. Therefore, it is to be understood that the present invention can be practiced by methods other than the methods described in the present specification within the scope of the appended claims.

Claims

1. A rotor spinning machine is characterized in that,

the disclosed device is provided with:

a plurality of spinning units for generating yarns by using the twist air flow;

a 1 st pipe for flowing compressed air supplied from one end side toward the plurality of spinning units from the other end side;

a 2 nd pipe connected to a compressed air supply source for supplying compressed air to the plurality of spinning units, the compressed air being supplied from one end side by the compressed air supply source;

a plurality of 3 rd pipes branched from the other end of the 2 nd pipe and connected to one end of the 1 st pipe; and

and a plurality of compressed air purification filters provided in the 3 rd pipes, respectively.

2. Rotor spinning machine according to claim 1,

the capacity of each of the plurality of compressed air purification filters is 2 times or less of the total supply flow rate of the compressed air supplied from the compressed air supply source.

3. Rotor spinning machine according to claim 1 or 2,

the capacities of the compressed air purification filters are 1000L/min to 20000L/min, respectively.

4. A rotor spinning machine according to any of claims 1-3,

the disclosed device is provided with:

a 1 st pressure sensor for detecting a pressure in the 1 st pipe; and

and a 2 nd pressure sensor for detecting the pressure in the 2 nd pipe.

5. A rotor spinning machine according to any one of claims 1 to 4,

each of the plurality of compressed air purifying filters is a demister.

6. A rotor spinning machine according to any of claims 1-5,

the plurality of compressed air purification filters include a 1 st compressed air purification filter and a 2 nd compressed air purification filter which are disposed adjacent to each other,

the 1 st compressed air cleaning filter and the 2 nd compressed air cleaning filter are arranged along an imaginary horizontal plane,

the 1 st compressed air purifying filter is disposed at one position in the middle of a straight line portion parallel to the virtual horizontal plane and included in the 3 rd pipe,

the 1 st compressed air purification filter is arranged to overlap the 2 nd compressed air purification filter when viewed along the straight portion.

7. A rotor spinning machine according to any one of claims 1 to 6,

the disclosed device is provided with:

a driving source for driving the driving member of the spinning unit; and

a storage section for storing the drive source,

the compressed air purification filters are accommodated in the accommodation section.

8. A rotor spinning machine according to any one of claims 1 to 7,

the plurality of compressed air purifying filters are the same type of components as each other.

9. A rotor spinning machine according to any one of claims 1 to 8,

the number of the spinning units is more than 48.

10. A rotor spinning machine according to any one of claims 1 to 9,

the number of the compressed air purifying filters is 2 to 4.

11. A rotor spinning machine according to any one of claims 1 to 10,

the air cleaner includes a plurality of opening/closing members for changing an opening/closing state of a portion of each of the 3 rd pipes on an upstream side of the compressed air purification filter.

12. A rotor spinning machine according to any one of claims 1 to 11,

the spinning unit is provided with an air spinning device,

the open-end spinning device comprises:

a fiber guide portion that guides the fiber bundle;

a nozzle body that forms a spinning chamber into which the fiber bundle guided by the fiber guide is introduced, and forms a nozzle through which compressed air injected to generate a whirling air flow in the spinning chamber passes; and

and a hollow guide shaft body that guides the fiber bundle that has passed through the spinning chamber to the outside.