CN107385583B - Cotton suction device of textile machine - Google Patents

Abstract

The invention provides a cotton suction device of a textile machine. When the slide shutter moves, the first suction port is aligned with the first opening portion, and suction force is generated in the first suction area. Meanwhile, the second suction ports are disposed between the adjacent second opening portions, and the suction force of the second suction area disappears. The flying cotton wool is attached to the first suction area and becomes fiber cotton. When the slide shutter moves in the opposite direction, the second suction port is aligned with the second opening portion, and a suction force is generated in the second suction area. Meanwhile, the first suction ports are disposed between the adjacent first opening portions, and the suction force of the first suction area disappears. The cellucotton moves from the first suction area to the second suction area. When the slide shutter moves after a predetermined time has elapsed, a suction force is generated in the first suction area, and the suction force in the second suction area disappears. The fiber cotton in the second suction area is contained in the secondary cotton suction chamber by utilizing negative pressure.

Description

Cotton suction device of textile machine

Technical Field

The present invention relates to a cotton suction device for collecting fly-wadding (Japanese: FENG ) generated during operation of a textile machine.

Background

When the textile machine is used to process fibers, a lot of fly-wadding is produced. Therefore, textile machines are equipped with a suction device for collecting the fly-wadding.

For example, japanese patent application laid-open No. s 64-61522 discloses a suction device including a suction duct and an independent suction device connected to the suction duct and provided for each spinning machine. The air suction duct is connected to a plurality of air suction nozzles provided in the draft section of each spindle.

The cotton suction device comprises a housing and a J-shaped partition plate arranged at the approximate center in the housing. One side of two sides of the J-shaped partition plate is provided with a first air suction chamber, and the other side of the two sides of the J-shaped partition plate is provided with a centralized cotton suction connecting chamber. A second suction chamber opened upward is formed in the J-shaped partition plate. The lower end of the first air suction chamber is connected with an air suction pipeline. A switching damper is provided above the opening of the second suction chamber. The switching flapper is rotatably supported by the housing. The switching baffle plate enables the first air suction chamber and the second air suction chamber to be communicated or separates the first air suction chamber and the second air suction chamber.

An opening and closing baffle linked with the switching action of the switching baffle is arranged between the first air suction chamber and the concentrated cotton suction connecting chamber, and the opening and closing baffle can communicate the two chambers or separate the two chambers. The opening and closing shutter is also rotatably supported by the housing. A lint attaching screen is disposed below the first air suction chamber so as to cross the first air suction chamber. An intake fan as an intake air generation means is disposed in the second intake chamber. The suction fan applies suction force to the suction duct through the filter.

In the suction device disclosed in this document, when the switching flapper is switched to communicate the first suction chamber with the second suction chamber, the opening/closing flapper operates in conjunction with the switching flapper to block the communication between the first suction chamber and the collective suction chamber. In this state, when a suction force is applied to the intake duct by the intake fan, the fiber cotton in the intake duct is sucked into the first intake chamber and adheres to the filter. When the amount of the cellucotton attached to the filter screen is increased and the suction pressure in the suction pipeline is reduced to a specified value, the switching baffle and the opening and closing baffle are operated together.

Specifically, the shutter is switched to operate to block the communication between the first suction chamber and the second suction chamber. In addition, the opening and closing baffle plate acts, and the first air suction chamber is communicated with the concentrated cotton suction connecting chamber. By this, the lint of the suction duct is sucked through the first suction chamber and the collective suction cotton connection chamber to the collective suction cotton device provided commonly for a plurality of spinning machines. At this time, the fiber cotton attached to the screen is blown up by the suction air and sucked into the collective suction cotton connection chamber together with the fly cotton of the suction duct. When the cellucotton attached to the filter screen is cleaned, the switching baffle and the opening and closing baffle act together to block the communication between the first air suction chamber and the concentrated cotton suction connecting chamber and enable the first air suction chamber to be communicated with the second air suction chamber. In this way, the cellucotton in the suction duct is again attached to the filter screen.

Jp 2001-254236 a discloses a lint processing apparatus that can discharge lint collected in a lint suction chamber in an easily-handled state. The cotton suction chamber is provided with a filter for attaching the flying cotton flock sucked from the pipeline. The suction chamber is provided with a bypass passage which is switched to a state of being deviated from the suction chamber and communicated with the duct when the lint removing operation is performed on the lint attached to the filter of the suction chamber. The lint adhering to the filter is collected in a collection chamber located below the filter by a collection means such as compressed air ejected from a nozzle or a mechanical scraping plate. The recovery chamber is provided with a tubular ejector that reciprocates in the recovery chamber. The movement of the ejector causes the fly waste collected in the recovery chamber to be ejected from the outlet of the recovery chamber while being stably compressed.

In the suction device of jp 64-61522 a, the suction force generated by the collective suction device is used in both the suction of the fly wadding using the suction duct and the removal of the lint attached to the screen of the suction device. In general, the suction force of the concentrated suction device is sufficient as long as it can remove the cellucotton from the filter screen. However, in the suction device of this document, in addition to the suction force required to remove the cellucotton from the screen, a suction force is required for sucking the lint using a suction duct during operation of the textile machine. Therefore, it is necessary to increase the suction force of the collective suction device, so that the power consumption of the collective suction device increases.

In the lint processing apparatus disclosed in japanese patent application laid-open No. 2001-254236, in order to remove lint from the filter of the lint suction chamber, it is necessary to provide not only a nozzle or a scraping plate but also a bypass passage. Therefore, the structure of the cotton suction device is complicated. Further, if a nozzle or a scraping plate is provided near the filter of the suction chamber, the lint sucked from the duct into the suction chamber is easily caught by the nozzle or the scraping plate. Therefore, lint that cannot be removed may be accumulated in the suction chamber.

Disclosure of Invention

The invention aims to remove cellucotton attached to a filter of a cotton suction device by a simple structure without increasing power consumption.

In order to solve the above problem, according to a first aspect of the present invention, there is provided a cotton suction device for a textile machine, comprising a primary cotton suction chamber having a filter for sucking cotton from a flying cotton flock by means of a suction force of a suction source. The cotton suction device is provided with: a suction position switching mechanism which switches a suction force of the filter to any one of a first suction region and a second suction region provided to the filter; and a secondary suction chamber connected to the second suction area for receiving the cellucotton sucked to the second suction area by means of the suction force of the suction source.

Drawings

Fig. 1 is a cross-sectional view taken along line 1-1 of fig. 2A showing a cotton suction device according to a first embodiment of the present invention.

Fig. 2A is a cross-sectional view taken along line 2A-2A of fig. 1.

Fig. 2B is an enlarged perspective view showing a part of the partition plate.

Fig. 3A is a front view of the filter.

Fig. 3B is a front view of the filter holder.

Fig. 3C is a front view of the slide gate.

Fig. 4 is an explanatory diagram showing a first stage of the operation of the slide gate.

Fig. 5 is an explanatory diagram showing a second stage of the operation of the slide gate.

Fig. 6 is an explanatory diagram showing a third stage of the operation of the slide shutter.

Fig. 7 is a cross-sectional view taken along line 7-7 of fig. 2 showing a state where the secondary suction chamber contains cellucotton.

Fig. 8 is a sectional view taken along line 7-7 of fig. 2 showing a state after discharging the lint of the secondary suction chamber.

Fig. 9A is a partial cross-sectional view showing a state where the movable portion of the slide shutter of the cotton suction device according to the second embodiment of the present invention closes the upper layer side of the fixed portion and opens the lower layer side of the fixed portion.

Fig. 9B is a cross-sectional view taken along line 9B-9B of fig. 9A.

Fig. 10A is a front view of the fixing portion.

Fig. 10B is a front view of the movable portion.

Fig. 11A is a partial sectional view showing a state where the movable portion of the slide shutter of the suction device opens the upper layer side of the fixed portion and closes the lower layer side of the fixed portion.

Fig. 11B is a cross-sectional view taken along line 11B-11B of fig. 11A.

Fig. 12A is a front cross-sectional view showing a cotton suction device according to a third embodiment of the present invention.

Fig. 12B is a partially enlarged view of fig. 12A.

Detailed Description

(first embodiment)

A first embodiment embodying the present invention will be described below with reference to fig. 1 to 8. Fig. 1 and 2A show a cotton suction device provided at an end of a bed of a spinning machine (not shown). As shown in fig. 1 and 2A, the cotton suction device 1 includes a main body 2, and a primary cotton suction chamber 3, a secondary cotton suction chamber 4, a drive motor chamber 5, an intake fan chamber 6, and a storage chamber 7 are provided in the main body 2. The storage chamber 7 is disposed below the drive motor chamber 5.

The primary cotton suction chamber 3 and the secondary cotton suction chamber 4 are arranged in parallel and are sealed by an outer wall 8 of the main body 2. The primary cotton suction chamber 3 and the secondary cotton suction chamber 4 are divided by an inner wall 9. The inner wall 9 is provided with a receiving opening 10 for communicating the primary cotton suction chamber 3 and the secondary cotton suction chamber 4. In fig. 1, the inner wall 9 is omitted.

A filter 11, a filter holder 12, and a slide shutter 13 are provided between the primary suction chamber 3 and the drive motor chamber 5. As shown in fig. 3A, the filter 11 is constituted by a planar quadrangular member. The filter 11 is formed in a size to completely separate the primary suction chamber 3 from the drive motor chamber 5.

As shown in fig. 3B, the filter holder 12 is formed of a plate-like member having substantially the same size as the filter 11, and is formed in a quadrangular shape. Four first openings 14 are formed on the lower layer side of the filter holder 12. Four second openings 15 are formed on the upper side of the filter holder 12 so as to correspond to the first openings 14. The opening area of each first opening 14 is larger than the opening area of each second opening 15. The number of the first opening 14 and the second opening 15 is 1 or more.

The four first opening portions 14 form a first suction area 16 for suction in a normal state of the filter 11. The four second openings 15 form a second suction area 17 for temporarily sucking air when the filter 11 is cleaned. The filter 11 and the filter holder 12 are integrated by being overlapped with each other. The filter 11 faces the primary chamber 3 and is fixed to the outer wall 8 and the inner wall 9. The filter holder 12 faces the drive motor chamber 5 and is fixed to the outer wall 8 and the inner wall 9.

The primary chamber 3 has a partition 18 at the boundary of the first suction area 16 and the second suction area 17. The partition plate 18 restricts the flow of gas between the first suction zone 16 and the second suction zone 17. As shown in fig. 2B, an opening 18a is formed in the partition plate 18. A suction duct 19 is connected to the primary chamber 3. The suction duct 19 is connected to a suction nozzle of each spindle provided in the spinning machine, and this portion is not shown. The fly-wad produced at each spindle is sucked into the suction duct 19 via the suction nozzle of each spindle.

A negative pressure gauge 20 that detects a negative pressure in the suction duct 19 is provided in the suction duct 19. When the lint sucked from the suction duct 19 adheres to the filter 11, the suction force of the filter 11 is reduced. In this manner, the control device sends a command for performing the cleaning operation of the filter 11 based on the negative pressure signal from the negative pressure gauge 20.

As shown in fig. 3C, the slide shutter 13 is formed of a rectangular plate-like member, and is formed larger than the filter 11 and the filter holder 12. Four first suction ports 21 are formed on the lower layer side of the slide shutter 13. Four second suction ports 22 are formed on the upper layer side of the slide shutter 12. The first suction port 21 is formed in the same shape as the first opening portion 14 of the filter holder 12. The second suction port 22 is formed in the same shape as the second opening 15 of the filter holder 12. The position of the first suction port 21 is shifted in the lateral direction (the left-right direction in fig. 3C) with respect to the position of the second suction port 22.

As shown in fig. 1, the slide shutter 13 abuts the filter holder 12 and faces the drive motor chamber 5. A guide 23 is fixed to an inner surface of an outer wall 8 defining an upper portion of the drive motor chamber 5. A guide 25 is fixed to an inner surface of the outer wall 8 defining a lower portion of the drive motor chamber 5. The guides 23 and 25 support the slide shutter 13 and guide the slide shutter 13 to move linearly in the lateral direction.

The base end portion of the cylinder 26 is fixed to the outer wall 8 of the body 2 by a bolt 27. The cylinder 26 is connected to an air pipe having an on-off valve for supplying and discharging compressed air, which is not shown. Therefore, the compressed air is supplied and discharged, and the piston rod 28 is reciprocated in the lateral direction. The cylinder 26 is fixed to the slide shutter 13 via an L-shaped coupling plate 29. A connecting plate 29 is fixed to the top end of the piston rod 28. Thereby, the slide shutter 13 can be linearly moved in the lateral direction by the operation of the cylinder 26.

Fig. 4 shows a suction state of the spinning frame in a normal state during operation. In this state, the piston rod 28 is maximally extended in the arrow R direction by the operation of the cylinder 26. Thereby, the slide shutter 13 moves rightward in fig. 4. At this time, on the one hand, the first suction port 21 of the slide shutter 13 overlaps the first opening 14 of the filter holder 12, and therefore a suction force is generated in the first suction region 16. On the other hand, the second suction port 22 of the slide shutter 13 is laterally offset with respect to the first suction port 21. Therefore, the second suction port 22 of the slide shutter 13 is not overlapped with the second opening 15 of the filter holder 12, and is disposed between the adjacent second openings 15. At this time, since the slide shutter 13 closes the second opening 15, no suction force is generated in the second suction area 17.

Fig. 5 shows a cotton suction state when the cleaning operation is temporarily performed during the operation of the spinning machine. In this state, the piston rod 28 is retracted to the maximum extent in the arrow L direction by the operation of the cylinder 26. At this time, on the one hand, the second suction port 22 of the slide shutter 13 overlaps the second opening 15 of the filter holder 12, and therefore a suction force is generated in the second suction region 17. On the other hand, the first suction port 21 of the slide shutter 13 is not overlapped with the first opening 14 of the filter holder 12, but is disposed between the adjacent first openings 14. At this time, the first opening 14 is closed by the slide shutter 13, and therefore, no suction force is generated in the first suction area 16.

By sliding the shutter 13, the first suction area 16 and the second suction area 17 are caused to generate suction force or the suction force is eliminated. That is, the slide shutter 13 switches between the suction function of the first suction area 16 and the suction function of the second suction area 17. Therefore, the slide shutter 13 constitutes a suction position switching mechanism that switches the suction force of the filter 11 to either one of the first suction zone 16 and the second suction zone 17.

In fig. 1, the drive motor chamber 5 has an inner wall 30 that divides the drive motor chamber 5 and the intake fan chamber 6. A drive motor 31 is attached to the inner wall 30. The inner wall 30 is formed with a through hole 32 that communicates the drive motor chamber 5 with the intake fan chamber 6. The through hole 32 is formed radially outside the drive motor 31. An intake fan 34 fixed to a drive shaft 33 of the drive motor 31 is disposed in the intake fan chamber 6.

The suction fan 34 is rotated by the driving motor 31. The air in the intake fan chamber 6 is discharged from an unillustrated exhaust port, and the drive motor chamber 5 communicating with the intake fan chamber 6 through the through hole 32 maintains a negative pressure state. Thereby, a suction airflow is generated in the primary suction chamber 3. The suction force of the primary suction chamber 3 acts on a suction nozzle provided at each spindle of the spinning machine via a suction duct 19. The driving motor chamber 5 is communicated with the secondary cotton suction chamber 4 through a through hole 35 which is arranged on the inner wall 9 in a penetrating way. Therefore, the negative pressure in the driving motor chamber 5 produces a suction effect on the secondary suction chamber 4.

A discharge unit 36 is provided in the secondary suction chamber 4. The discharge unit 36 is constituted by a secondary filter 37 and a pushing member 38 movable within the secondary filter 37 as main parts of the discharge unit 36. The secondary filter 37 has a cylindrical shape. The secondary filter 37 is formed to have a length capable of coping with both the housing port 10 and the through hole 35. The secondary filter 37 has a discharge port 39 formed therein. The fiber batting in the secondary filter 37 is discharged from the discharge outlet 39 to the space 40 below the secondary filter 37.

An opening/closing plate 41 made of rubber is provided at the discharge port 39. The opening/closing plate 41 closes the inside of the secondary filter 37. As shown in fig. 8, the opening/closing plate 41 can be elastically deformed by a small force to open the interior of the secondary filter 37. A tubular backflow prevention member 42 having a narrowed tip is provided below the secondary filter 37. The backflow preventing member 42 prevents the lint discharged to the space 40 from returning into the secondary filter 37.

The push-out member 38 is a cylindrical member having an outer shape smaller than the inner diameter of the secondary filter 37. The end of the pushing member 38 opposite to the discharge port 39 is closed. The closing surface of the push-out member 38 forms a push-out surface 43 for the cellucotton. An air cylinder 44 is provided above the pushing member 38. The upper end of the cylinder 44 is fixed to a metal fitting 45 attached to the outer wall 8 of the main body 2 by a bolt 46. The cylinder 44 is connected to an air pipe provided with an opening/closing valve not shown. The air cylinder 44 operates based on a command from the control device.

The piston rod 47 reciprocates in accordance with the operation of the cylinder 44. The piston rod 47 projects into the barrel of the ejector member 38. The distal end of the piston rod 47 is fixed to the pushing surface 43 of the pushing member 38. Therefore, when the air cylinder 44 is operated, the pushing member 38 is reciprocated in the up-down direction of fig. 1 in the secondary filter 37 by the piston rod 47. In a normal case, the push-out member 38 enters the vicinity of the discharge port 39 of the secondary filter 37 due to the extension of the piston rod 47.

A seal 48 made of felt or the like is provided at the upper end of the secondary filter 37. The seal 48 seals the interior of the secondary chamber 4. Further, the space between the secondary suction chamber 4 and the lower space 40 is also sealed. Thus, the negative pressure in the secondary filter 37 does not affect the space 40. A guide 49 is provided in the space 40. The guide 49 forms a guide for the mass of fibre cotton discharged from the secondary filter 37 of the secondary suction chamber 4. The guide 49 is formed of a bent plate material. The guide 49 has a first end fixed to the outer wall 8 of the main body 2 and a second end extending to the inlet 50 of the storage chamber 7.

The suction position switching operation of the slide shutter 13 will be described with reference to fig. 4 to 6. During the operation of the spinning machine, the piston rod 28 is normally extended to the maximum extent in the arrow R direction in accordance with the operation of the cylinder 26. At this time, the slide shutter 13 is guided by the guides 23 and 25 to move in the arrow R direction, and the first suction port 21 in the lower layer of the slide shutter 13 is aligned with the first opening portion 14 of the filter holder 12, so that the first opening portion 14 is opened.

On the other hand, the second suction port 22 on the upper layer of the slide shutter 13 is disposed between the adjacent second opening portions 15 of the filter holder 12. Therefore, the second opening 15 is closed by the slide shutter 13. Therefore, in a normal case, a suction force is generated in the first suction region 16. Therefore, the lint sucked into the suction duct 19 adheres to the filter 11 of the first suction region 16 and is accumulated, and the lint 51A indicated by a dotted line is formed.

When a large amount of lint is accumulated in the filter 11 of the first suction area 16, the negative pressure in the primary suction chamber 3 decreases. Therefore, the suction force in the suction duct 19 is reduced, and the suction force of the suction nozzle at each spindle of the spinning machine to the fly wadding is reduced. A negative pressure gauge 20 provided in the suction duct 19 outputs a negative pressure signal to the control device. When the control device detects a decrease in the suction force in the suction duct 19 based on the negative pressure signal, it outputs a cleaning operation signal to operate the cylinder 26.

As shown in fig. 5, the cylinder 26 retracts the piston rod 28 in the arrow L direction, thereby moving the slide shutter 13 in the arrow L direction. Accordingly, the first suction port 21 of the slide shutter 13 is disposed between the adjacent first opening portions 14 of the filter holder 12. Therefore, on the one hand, the slide shutter 13 closes the first opening 14, and thus the suction force of the first suction area 16 disappears. On the other hand, the second suction port 22 of the slide shutter 13 is aligned with the second opening portion 15 of the filter holder 12, so that the second opening portion 15 is opened to generate a suction force in the second suction region 17.

When the suction force of the first suction region 16 disappears and suction force is generated in the second suction region 17, the lint 51A attached to the first suction region 16 moves toward the second suction region 17 and is adsorbed to the second suction region 17 like the lint 51B. After a predetermined time, the cylinder 26 starts operating based on a reset signal from the control device.

As shown in fig. 6, the piston rod 28 is moved in the direction of arrow R by the operation of the air cylinder 26. Further, on the other hand, when the first suction port 21 of the slide shutter 13 is aligned with the first opening portion 14 of the filter holder 12, a suction force is generated in the first suction region 16. On the other hand, when the second suction port 22 is disposed between the adjacent second opening portions 15 of the filter holder 12, the slide shutter 13 closes the second opening portions 15, and thus the suction force of the second suction area 17 is lost.

The cleaning operation signal of the control device is also sent to the cylinder 44 of the secondary chamber 4. The cylinder 44 operates in response to a cleaning operation signal from the control device. At this time, as shown in fig. 6 and 7, the piston rod 47 moves upward, and the pushing member 38 is pulled out from the secondary filter 37. The length of the push-out member 38 is set so that the receiving opening 10 of the secondary suction chamber 4 opens into the secondary filter 37.

When the suction force of the second suction area 17 is lost, the lint 51B adhering to the second suction area 17 is sucked by the negative pressure in the secondary filter 37 of the secondary suction chamber 4 as shown by the lint 51C, and is accommodated in the secondary filter 37 from the accommodation port 10. When the suction force of the second suction area 17 is lost, suction force is generated in the first suction area 16, and a suction airflow heading for the first suction area 16 is generated in the primary suction chamber 3. At this time, however, the suction airflow from the second suction region 17 to the first suction region 16 is restricted by the partition plate 18 shown in fig. 2. Therefore, the suction force generated by the negative pressure in the secondary filter 37 when the pushing member 38 is pulled out and the receiving opening 10 is opened exceeds the suction force of the first suction region 16. Thereby, as shown in the cellucotton 51C of fig. 6, the cellucotton 51B is sucked into the storage opening 10 of the secondary suction chamber 4.

In the primary chamber 3, the lint 51A shown in fig. 4 is removed. Therefore, the suction force of the first suction region 16 is higher than the suction force before cleaning, and the lint in the suction duct 19 can be satisfactorily sucked. Within the primary chamber 3, there is a floating flock which does not adhere to the filters 11 of the first suction zone 16 and the second suction zone 17.

Here, in the secondary suction chamber 4, a certain gap is formed between the inner peripheral surface of the secondary filter 37 and the outer peripheral surface of the pushing member 38. Therefore, suction force is always generated in the secondary suction chamber 4. Therefore, the floating lint in the primary suction chamber 3 is sucked from the receiving opening 10 into the secondary filter 37 of the secondary suction chamber 4. Thus, the floating lint in the primary suction chamber 3 is not accumulated in an untreated portion.

Referring to fig. 7 and 8, the treatment of the lint 51C contained in the secondary filter 37 of the secondary suction chamber 4 will be described. As shown in fig. 7 and 8, when a predetermined time has elapsed after the piston rod 47 has moved upward due to the operation of the air cylinder 44, the air cylinder 44 is operated again based on a command from the control device, and the piston rod 47 moves downward. The piston rod 47 moves downward so that the pushing member 38 enters the secondary filter 37. The pushing surface 43 of the pushing member 38 moves the lint 51C accommodated in the secondary filter 37 toward the discharge port 39 while being compressed.

The fiber cotton 51C is gradually compressed in the secondary filter 37 to become a fiber cotton block. As shown in fig. 8, when the pushing surface 43 of the pushing member 38 reaches the discharge port 39, the fiber cotton piece 52A passes through the backflow prevention member 42 and is discharged into the space 40 while pushing the opening/closing plate 41 of the discharge port 39. The expulsion of the mass of fiber cotton 52A squeezes the previously expelled mass of fiber cotton 52B, 52C, 52D out of the space 40. The fiber cotton block is guided to the inlet 50 of the storage chamber 7 by the guide 49 provided in the space 40, and is stored in the storage chamber 7.

The storage chamber 7 is partitioned from the drive motor chamber 5 by a partition wall 24. Therefore, the negative pressure generated by the suction fan 34 does not affect the storage chamber 7. Therefore, the storage chamber 7 is almost at atmospheric pressure. The operator can easily perform the processing operation on the fiber cotton blocks 52C and 52D in the storage chamber 7 set to the atmospheric pressure state. Further, by providing a collective cotton suction chamber (not shown) in the spinning mill and connecting the storage chamber 7 to the collective cotton suction chamber, it is possible to easily perform automatic cotton suction processing without depending on the operator.

In the first embodiment, the first suction area 16 and the second suction area 17 are provided in the filter 11 of the primary suction chamber 3, and the suction function of the first suction area 16 and the suction function of the second suction area 17 can be switched. By doing so, the lint of the filter 11 can be moved from the first suction area 16 to the second suction area 17 by the suction force of the filter 11, and can be easily stored in the secondary suction chamber 4 from the second suction area 17. That is, a mechanical scraping means for scraping the lint from the filter 11, a jetting mechanism for jetting compressed air, and the like are not required. Therefore, the suction device 1 can be simply configured. In addition, no other suction force than the suction force that attaches the lint to the filter 11 needs to be used. Therefore, power consumption can be reduced.

In addition, the suction capacity of the filter 11 can be switched to either one of the first suction region 16 and the second suction region 17 only by the linear movement of the slide shutter 13. Therefore, the overall structure of the cotton suction device 1 can be miniaturized. In addition, a partition plate 18 is provided between the first suction area 16 and the second suction area 17. Thus, since the air flow between the first suction area 16 and the second suction area 17 is suppressed, the lint can be reliably moved from the second suction area 17 to the secondary suction chamber 4.

Further, the secondary suction chamber 4 is provided with a discharge unit 36 including a secondary filter 37 and a pushing member 38. This makes it possible to discharge the lint contained in the secondary filter 37 from the discharge port 39 of the secondary filter 37 as a lint mass that has been appropriately compressed. Therefore, the subsequent treatment of the cellucotton becomes easy. Further, by providing the storage chamber 7, the lint stored in the storage chamber 7 can be collected by an operator, and the lint can be automatically collected and processed by connecting the automatic storage chamber 7 to the collective suction chamber.

(second embodiment)

Next, a second embodiment embodying the present invention will be described with reference to fig. 9 to 11. The second embodiment is different from the first embodiment in that the suction position switching mechanism for switching the suction force of the filter to either one of the first suction region and the second suction region does not form part of the shutter. The components other than the suction position switching mechanism, that is, the primary suction chamber, the secondary suction chamber, the drive motor chamber, the intake fan chamber, and the storage chamber are the same as those of the first embodiment. Therefore, the configuration of the suction position switching mechanism will be described, and the same reference numerals will be given to the same portions as those of the first embodiment, and detailed description thereof will be omitted.

As shown in fig. 9A, the suction device 54 has a filter 55 and a slide shutter 56 constituting a suction position switching mechanism between the primary suction chamber 3 and the drive motor chamber 5. The filter 55 is disposed facing the primary chamber 3. The slide shutter 56 is disposed facing the drive motor chamber 5. The slide shutter 56 is separated from the filter 55. Therefore, a space S is provided between the slide shutter 56 and the filter 55. A partition member 57 for partitioning the space S is provided between the slide shutter 56 and the filter 55. The partition member 57 is provided at a position corresponding to the partition plate 18, and partitions the space S into a region corresponding to the first suction region 16 and a region corresponding to the second suction region 17.

As shown in fig. 9A and 9B, the filter 55 is composed of a filter main body 58 and a filter holder 59 that holds the filter main body 58. The filter body 58 is disposed facing the primary chamber 3. The filter holder 59 is disposed facing the slide shutter 56. A support member 55a extending along the filter 55 is provided on the inner surface of the bottom of the outer wall 8. The filter 55 is fixed in a state in which the lower end is in contact with the support member 55a and the upper end is in contact with the inner surface of the upper portion of the outer wall 8. The filter holder 59 has a plurality of substantially rectangular openings 59a at positions corresponding to the first suction region 16 and the second suction region 17, respectively. The area of the opening 59a is formed to be small so as to suppress the deflection of the filter main body 58 due to the suction force of the lint acting on the filter main body 58.

As shown in fig. 9A, the slide shutter 56 includes a fixed shutter plate 60 as a fixed portion and a movable shutter plate 61 as a movable portion. The movable shutter plate 61 is linearly movable in a state of being overlapped with the fixed shutter plate 60. The fixed shutter plate 60 is disposed facing the drive motor chamber 5. The movable shutter plate 61 is coupled to a piston rod 66a of the cylinder 66 via a coupling member 67. The fixed shutter plate 60 is formed with a long hole that allows the coupling member 67 to move.

As shown in fig. 10A, the fixed shutter plate 60 has a plurality of first opening portions 62 at positions corresponding to the first suction area 16. The fixed shutter plate 60 has a plurality of second opening portions 63 at positions corresponding to the second suction area 17. The first openings 62 are arranged in 5 rows and 4 columns, and the second openings 63 are arranged in 3 rows and 4 columns. The first opening 62 has the same size as the second opening 63.

As shown in fig. 10B, the movable shutter plate 61 has a plurality of first suction ports 64 at positions corresponding to the first suction areas 16. The movable shutter plate 61 has a plurality of second suction ports 65 at positions corresponding to the second suction area 17. The first suction ports 64 are arranged in 5 rows and 4 columns, and the second suction ports 65 are arranged in 3 rows and 4 columns. The first suction port 64 has the same size as the first opening 62, and the second suction port 65 has the same size as the second opening 63.

As shown in fig. 9B and 11B, the first opening 62, the second opening 63, the first suction port 64, and the second suction port 65 are smaller than the opening 59a of the filter holder 59. As shown in fig. 9B, in a state where the piston rod 66a of the air cylinder 66 is retracted, the movable shutter plate 61 is disposed such that the first suction port 64 faces the first opening 62 of the fixed shutter plate 60 and the second suction port 65 faces the non-opening of the fixed shutter plate 60.

As shown in fig. 11B, in the extended state of the piston rod 66a, the movable shutter plate 61 is disposed such that the first suction port 64 faces the non-opening portion of the fixed shutter plate 60 and the second suction port 65 faces the second opening portion 63 of the fixed shutter plate 60. The movable shutter plate 61 is driven in the vertical direction by the cylinder 66 in a state where both side portions of the surface opposite to the fixed shutter plate 60 are engaged with a guide member (not shown). Thereby, the position of the movable shutter plate 61 is alternatively switched between a position where suction force is generated in the first suction area 16 and a position where suction force is generated in the second suction area 17.

Next, a suction position switching operation of the slide shutter 56 will be described.

During the operation of the spinning machine, in a normal case, as shown in fig. 9A, the piston rod 66a of the air cylinder 66 is retracted. Therefore, as shown in fig. 9B, on the one hand, the first suction port 64 of the movable shutter plate 61 is aligned with the first opening portion 62 of the fixed shutter plate 60, and thus the first opening portion 62 is opened.

On the other hand, since the second suction port 65 of the movable shutter plate 61 is disposed to face the adjacent second opening 63 of the fixed shutter plate 60, that is, to face the non-opening of the fixed shutter plate 60, the second opening 63 is closed by the movable shutter plate 61. Therefore, in a normal case, a suction force is generated in the first suction region 16. Therefore, the lint sucked into the suction duct 19 adheres to and accumulates on the filter main body 58 at a portion corresponding to the first suction region 16, and becomes lint (not shown).

If a large amount of lint accumulates on the filter main body 58 at a portion corresponding to the first suction region 16, the negative pressure in the primary suction chamber 3 decreases. Accordingly, the suction force in the suction duct 19 is reduced, and the suction force of the suction nozzle at each spindle of the fine spinning machine to the fly wadding is reduced. In this way, the negative pressure gauge 20 provided in the suction duct 19 outputs a negative pressure signal to the control device. When the control device detects a decrease in the suction force in the suction duct 19 based on the negative pressure signal, it outputs a cleaning operation signal to operate the cylinder 66.

As shown in fig. 11A, the cylinder 66 extends the piston rod 66 a. Then, as shown in fig. 11B, the first suction port 64 of the movable shutter plate 61 is disposed between the adjacent first opening portions 62 of the fixed shutter plate 60, and the first opening portions 62 are closed by the movable shutter plate 61. Therefore, the suction force of the first suction region 16 disappears. On the other hand, the second suction port 65 of the movable shutter plate 61 is aligned with the second opening portion 63 of the fixed shutter plate 60, and thus the second opening portion 63 is opened. Thereby, a suction force is generated in the second suction region 17.

When the suction force of the first suction region 16 disappears and the suction force of the second suction region 17 is generated, the lint (not shown) attached to the first suction region 16 moves toward the second suction region 17. Further, the fiber cotton is adsorbed to the filter main body 58 of the second suction area 17 by the suction airflow from the second opening 63 and the second suction port 65 at the positions shown in fig. 11B. After a predetermined time, the cylinder 66 operates based on a reset signal from the control device.

On the one hand, if the piston rod 66a of the air cylinder 66 is retracted, the first suction port 64 of the movable shutter plate 61 is aligned with the first opening portion 62 of the fixed shutter plate 60. Thus, a suction force is generated at the first suction region 16. On the other hand, when the second suction port 65 of the movable shutter plate 61 is disposed between the adjacent second opening portions 63 of the fixed shutter plate 60, the second opening portions 63 are closed by the movable shutter plate 61. Therefore, the suction force of the second suction area 17 disappears.

The cleaning operation signal of the control device is also sent to the cylinder 44 of the secondary chamber 4. The cylinder 44 operates in response to a cleaning operation signal from the control device. At this time, the piston rod 47 moves upward, and the pushing member 38 is pulled out from the secondary filter 37. The length of the push-out member 38 is set so that the receiving opening 10 of the secondary suction chamber 4 opens into the secondary filter 37.

When the suction force of the second suction area 17 is lost, the lint attached to the second suction area 17 is sucked by the negative pressure in the secondary filter 37 in the secondary suction chamber 4, and is received in the secondary filter 37 from the receiving port 10. When the suction force of the second suction area 17 disappears, a suction force is generated in the first suction area 16. Thus, inside the primary chamber 3, a suction airstream is generated which is destined for the first suction area 16. At this time, the suction airflow heading from the second suction area 17 to the first suction area 16 is restricted by the partition plate 18. Therefore, the suction force generated by the negative pressure in the secondary filter 37 when the pushing member 38 is pulled out and the receiving port 10 is opened exceeds the suction force of the first suction region 16. Thereby, the cellucotton is sucked into the receiving opening 10 of the secondary suction chamber 4. The fiber cotton contained in the secondary filter 37 of the secondary suction chamber 4 is treated in the same manner as in the first embodiment.

In the second embodiment, the suction position switching mechanism that switches the suction function of the first suction zone 16 and the suction function of the second suction zone 17 of the filter 55 is constituted by the slide shutter 56, and the slide shutter 56 is constituted by the fixed shutter plate 60 and the movable shutter plate 61. Further, the slide shutter 56 is provided separately from the filter 55, and the suction function of the first suction area 16 and the second suction area 17 of the filter 55 is switched by the movement of the movable shutter plate 61. By these means, the lint attached to the filter 55 can be moved from the first suction region 16 to the second suction region 17 by the suction force of the filter 55, and the lint can be easily accommodated in the secondary suction chamber 4 from the second suction region 17. That is, a mechanical scraping means for scraping the lint from the filter 55, a jetting mechanism for jetting compressed air, and the like are not required. Therefore, the structure of the cotton suction device 54 can be simplified. In addition, no other suction force is required than the suction force that attaches the lint to the filter 55. Therefore, power consumption can be reduced.

In addition, in the structure in which the opening is provided in the filter holder holding the filter and the suction position of the filter is switched by opening and closing the opening by the linear movement of the slide shutter, the opening area of the holder portion needs to be smaller than the non-opening portion. Therefore, the area of the filter that effectively functions to collect the lint is half or less of the area of the filter. Therefore, the suction capacity of the filter is reduced in a short time. In this regard, according to the second embodiment, since the size of the opening is not restricted by the above-described structure, the opening 59a of the filter holder 59 can be increased. This allows the filter to have a larger suction capacity in a state of being set to the same size.

(third embodiment)

Fig. 12A and 12B show a third embodiment, and detailed description of the same structure as that of the first embodiment is omitted. In the third embodiment, a cylindrical filter 75 and a rotary slide shutter 76 are provided in a main body 74 of a cotton suction device 73, and a part of the filter 75 is covered with a plate material 77 to constitute a primary cotton suction chamber 78. The primary suction chamber 78 is connected to a suction duct 97 provided in the spinning machine.

The filter 75 is fixed to a semicircular block 79 provided inside the cotton suction device 73. The filter 75 has a first suction area 82 for suction in a normal state and a second suction area 83 for temporary suction during cleaning. In addition, suction section 85 is adjacent to primary suction chamber 78 and communicates with secondary suction chamber 84.

A rotating plate 86 is provided at the center of the filter 75. The rotating plate 86 is coupled to a piston rod 88 of the air cylinder 87. Therefore, the rotating plate 86 can be rotated back and forth in the arrow direction shown in fig. 12A by the operation of the air cylinder 87. The swivel plate 86 is fixed to the arm 89. The tip of the arm 89 is attached to the slide shutter 76 formed in an arc shape. The slide shutter 76 can slide in close contact with the inner peripheral surface of the filter 75. A suction source such as an intake fan is provided inside the filter 75, and this portion is not shown. Therefore, the inside of the filter 75 maintains a negative pressure state.

The lower portion of the secondary suction chamber 84 opens to the primary suction chamber 78 and the suction portion 85. A storage chamber 90 is provided below the secondary suction chamber 84. An opening/closing plate 91 made of rubber is provided in a communication portion between the secondary suction chamber 84 and the storage chamber 90. A pushing member 93 constituting a discharging unit 92 is provided inside the secondary suction chamber 84. The pushing member 93 is formed in a cylindrical shape and has a pushing surface 94 on a side facing the opening/closing plate 91. A cylinder 95 is fixed to the main body 74. The push surface 94 of the push member 93 is connected to a piston rod 96 of the cylinder 95. The pushing member 93 is inserted into the cylindrical filter 100. A communication port 100a communicating with the second suction region 83 is formed in the filter 100. The second suction area 83 is separated from the suction portion 85 by a partition wall 101.

During the operation of the spinning machine, the slide shutter 76 is normally disposed at the position indicated by the solid line in fig. 12A in accordance with the operation of the air cylinder 87. At this time, a suction force is generated in the first suction region 82. In addition, since the second suction area 83 is closed by the slide shutter 76, the suction force of the second suction area 83 disappears. At this time, the pushing surface 94 of the pushing member 93 descends to a position reaching the opening/closing plate 91 by the operation of the cylinder 95.

The lint sucked into the suction duct 97 adheres to the first suction area 82 as the fiber cotton 98A. A negative pressure gauge (not shown) provided in the suction duct 97 sends a negative pressure signal to a control device (not shown). When the fibrous cotton 98A is increased due to the adhesion of the lint, the suction force of the first suction region 82 is reduced. Therefore, the control device sends an operation command to the cylinder 87 based on the negative pressure signal.

When the air cylinder 87 is operated based on the instruction of the control device, the slide shutter 76 is rotated in the counterclockwise direction shown in fig. 12A. Then, the second suction area 83 is opened, and thus a suction force is generated in the second suction area 83. In addition, the first suction area 82 is closed by the slide shutter 76, and thus the suction force of the first suction area 82 disappears. When the suction force of the first suction region 82 disappears, the lint 98A on the first suction region 82 moves by the suction force of the second suction region 83, and adheres to the second suction region 83 as in the lint 98B shown by the virtual line in fig. 12A.

When a predetermined time set in advance has elapsed after the operation of the air cylinder 87, the control device transmits an operation command to the air cylinder 95 and the air cylinder 87. The air cylinder 95 operates to move the pushing member 93 to the uppermost position and to be disposed at the virtual line position in fig. 12A based on a command from the control device. Thus, secondary suction chamber 84 is substantially open to primary suction chamber 78. The air cylinder 87 operates to rotate the slide shutter 76 in the clockwise direction in fig. 12A based on a command from the control device.

Then, the first suction region 82 is opened, and thus a suction force is generated at the first suction region 82. At the same time, the second suction area 83 is closed by the slide shutter 76, and thus the suction force of the second suction area 83 disappears. Between the second suction area 83 and the secondary suction chamber 84, a suction portion 85 is provided. Therefore, a part of the air flow from the suction duct 97 does not enter the inside of the cylindrical filter 75 but flows toward the secondary suction chamber 84. Therefore, the lint 98B on the second suction area 83 after the suction force disappears is contained in the filter 100 as indicated by the lint 98C indicated by the virtual line by the suction force formed by the suction portion 85.

When a predetermined time set in advance has elapsed after the push-out member 93 has risen, the control device sends an operation command for executing the suction cotton processing operation to the air cylinder 95. The air cylinder 95 operates to lower the pushing member 93 to the opening/closing plate 91 based on a command from the control device. As the pushing member 93 descends, the pushing surface 94 gradually compresses the lint 98C in the filter 100 to form a lint mass. Then, the opening/closing plate 91 is opened by the push-out surface 94, and the fiber cotton piece 99A is discharged into the storage chamber 90 in a state of atmospheric pressure or near atmospheric pressure.

The fiber cotton pieces 99B, 99C, and 99D discharged before are stored in the storage chamber 90. As in the first embodiment, the worker can easily handle the fiber cotton blocks 99A, 99B, 99C, 99D in the storage chamber 90. In addition, the storage chamber 90 is connected to the collective cotton suction chamber, so that the automatic cotton suction treatment can be easily performed.

In the third embodiment, the suction function of the first suction area 82 and the suction function of the second suction area 83 can be switched by moving the rotary slide shutter 76 with respect to the cylindrical filter 75. Accordingly, the lint in the primary suction chamber 78 can be easily contained in the filter 100 in the secondary suction chamber 84 by the suction force of the filter 75. That is, even in the third embodiment, the same operational effects as those of the first embodiment can be obtained.

The above embodiments may be modified as follows.

In the first embodiment, the first opening portion 14 and the second opening portion 15 of the filter holder 12 may be laterally displaced so as to be aligned with the first suction port 21 and the second suction port 22 of the slide shutter 13.

In the first and second embodiments, the partition plate 18 may not be provided. In this case, a part of the lint 51B adsorbed to the second suction region 17 may move to the first suction region 16. However, since the amount of cellucotton is reduced compared to before the cleaning, the suction force of the first suction area 16 is also increased relative to before the cleaning.

In the first and second embodiments, the rubber shutter plate 41 of the secondary suction chamber 4 may not be provided. In this case, the secondary suction chamber 4 may be closed by the push-out surface 43 of the push-out member 38.

In the first and second embodiments, the backflow prevention member 42 may not be provided. In this case, the opening/closing plate 41 or the pushing surface 43 of the pushing member 38 may be used as long as the flow of the lint is prevented.

In the first and second embodiments, the secondary filter 37 of the secondary suction chamber 4 may be a square tube, and the pushing member 38 may be a square tube as in the case of the secondary filter 37.

In the first to third embodiments, the cylinders 26, 44, 66, 87, and 95 may be replaced with other driving mechanisms such as an electric motor and a hydraulic cylinder.

In the first to third embodiments, the pushing members 38 and 93 may be constituted by screws.

In the first to third embodiments, the discharge direction of the lint stored in the secondary suction chamber may be changed to the horizontal direction or the upward direction.

In the first embodiment, the filter holder 12 may be omitted. In this case, one or more suction ports are formed in the slide shutter 13, and a portion of the filter 11 facing the suction ports when the slide shutter 13 is moved to one side is defined as a first suction region. In addition, a portion of the filter 11 facing the suction port when the slide shutter 13 moves in the opposite direction is set as a second suction region.

In the first embodiment, the first suction area and the second suction area of the filter 11 may be formed by using 2 separate filters, and a suction duct having an opening/closing plate may be connected to each filter to configure a suction position switching mechanism. In this case, the suction position is switched by operating each opening/closing plate.

In the first embodiment, the suction position switching mechanism may be configured by a switching damper that divides the drive motor chamber 5 so as to correspond to the first suction region 16 and the second suction region 17 of the filter 11 and switches the connection with the intake fan chamber 6.

In the second embodiment, the first opening portion 62, the second opening portion 63, the first suction port 64, and the second suction port 65 are not necessarily all the same size. The sizes of the openings and the suction ports may be any size as long as there is no portion where the second opening 63 overlaps the second suction port 65 when the first opening 62 and the first suction port 64 are aligned by the movement of the movable shutter plate 61, and no portion where the first opening 62 overlaps the first suction port 64 when the second opening 63 and the second suction port 65 are aligned. For example, two first openings 62 adjacent in the row direction may be formed as continuous holes, two first suction openings 64 adjacent in the row direction may be formed as continuous holes, and two first suction openings 64 adjacent in the row direction may be formed as continuous holes, while the second suction openings 65 are not changed.

Further, the two first openings 62 and the first suction ports 64 at the center of each row may be continuous holes, the first openings 62 and the first suction ports 64 may be 5 rows and 3 columns, the two second openings 63 and the second suction ports 65 at the center of each row may be continuous holes, and the second openings 63 and the second suction ports 65 may be 3 rows and 3 columns, respectively.

In the second embodiment, the shape of the opening 59a of the filter holder 59 is not limited to a substantially rectangular shape as long as the deflection of the filter main body 58 due to the suction force of the lint acting on the filter main body 58 can be suppressed small, and may be any shape such as a circle, an ellipse, or a polygon.

In the second embodiment, the movable shutter plate 61 may be moved in the lateral direction to generate and eliminate the suction force in the first suction area 16 and the second suction area 17. In this case, the first opening 62, the second opening 63, the first suction port 64, and the second suction port 65 formed in the fixed shutter plate 60 and the movable shutter plate 61 are preferably formed vertically long.

In the first to third embodiments, the cotton suction device 1, 54, 73 is not limited to be applied to the fine spinning machine, and may be applied to other textile machines such as a roving machine, a carding machine, and a combing machine.

Claims (7)

1. A cotton suction device of a textile machine is provided with a primary cotton suction chamber, the primary cotton suction chamber is provided with a filter for sucking cotton on flying cotton by suction force of a suction source, wherein the cotton suction device is provided with:

a suction position switching mechanism which is provided with a first suction area and a second suction area in the filter, switches the suction force of the filter from the first suction area to the second suction area, and switches the suction force of the filter from the second suction area to the first suction area after the cellucotton moves from the first suction area to the second suction area; and

and a secondary suction chamber connected to the second suction area, the secondary suction chamber being configured to store the lint sucked into the second suction area by a suction force of the suction source after switching a suction force of the filter from the second suction area to the first suction area.

2. The suction device of the textile machine according to claim 1, wherein,

the filter is formed in a planar shape,

the suction position switching mechanism has a slide shutter linearly movable,

the slide shutter is disposed facing the suction source.

3. The suction device of the textile machine according to claim 2, wherein,

the slide gate includes a fixed portion and a movable portion linearly movable in a state of being overlapped with the fixed portion,

the slide shutter is separated from the filter,

the fixing portion has a first opening portion and a second opening portion,

the movable portion has a first suction port corresponding to the first opening portion of the fixed portion and a second suction port corresponding to the second opening portion,

the first opening portion, the second opening portion, the first suction port, and the second suction port are arranged such that, by the linear movement of the movable portion, when the first suction port of the movable portion is aligned with the first opening portion of the fixed portion, the second opening portion of the fixed portion is closed by the movable portion, and when the second suction port of the movable portion is aligned with the second opening portion of the fixed portion, the first opening portion of the fixed portion is closed by the movable portion.

4. The suction device of the textile machine according to claim 2, wherein,

the filter is integrated with a plate-shaped filter holder,

the filter holder has a plurality of first opening portions forming the first suction region and a plurality of second opening portions forming the second suction region,

the slide gate has a plurality of first suction ports corresponding to the first opening portion of the filter holder and a plurality of second suction ports corresponding to the second opening portion,

the first opening portion, the second opening portion, the first suction port, and the second suction port are configured such that, by linear movement of the slide shutter, when the first suction port is aligned with the first opening portion, the second opening portion is closed by the slide shutter, and when the second suction port is aligned with the second opening portion, the first opening portion is closed by the slide shutter.

5. The suction device of a textile machine according to any one of claims 1 to 4, wherein,

the gas suction device is further provided with a partition plate for limiting the flow of gas between the first suction region and the second suction region.

6. The suction device of a textile machine according to any one of claims 1 to 4, wherein,

the secondary suction chamber has a cylindrical secondary filter for containing the cellucotton and a pushing member movable in the secondary filter,

the secondary filter has a discharge port for discharging the fiber cotton at a position facing the discharge surface of the discharge member.

7. The suction device of the textile machine according to claim 6, wherein,

the discharge port is connected to the storage chamber at atmospheric pressure.

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