JPH0255530B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a cotton collecting device in a spinning machine.

Conventional technology In general, a cotton collection device in a spinning machine has an intake nozzle installed at each drafting part of each spindle arranged in parallel on the machine stand.
A configuration is adopted in which each intake nozzle is connected to a common intake duct, and this intake duct is connected to a suction fan. Conventional devices include a fixed screen type and a rotating screen type.

As shown in FIG. 5, the conventional device with a fixed screen has a partition plate 2 erected inside a sealed housing 1 to form an intake chamber 3 and an exhaust chamber 4 on both sides. An air intake duct 5 is connected to the lower end of the partition plate 2, and the air intake duct 5 is connected to a plurality of air intake nozzles that open at the lower part of the drafting part of each spindle arranged in parallel on the machine base.
At the same time, the suction fan 6 is fixed through the suction chamber 3.
The periphery of an umbrella-shaped screen 7 disposed on the screen 7 is attached and fixed to the partition plate 2 via a bracket 8, and the fiber cotton sucked from the suction nozzle by the suction force of the suction fan 6 is transferred to the suction duct 5 along with the suction air. The liquid is sucked into the housing 1 through the air and adheres to the screen 7.

The screen rotation type conventional device has side plates 11a and 11b of a sealed casing 11, as shown in FIG.
Partition plates 12 and 13 are fixed to substantially the center of the inner surface of the housing 11 so as to face each other in the form of tongues, and a cage-shaped screen 14 with a built-in suction fan is rotatably disposed in the upper part of the interior of the housing 11. Two scraping rollers 15 and 16 are rotatably provided below 14, and
An intake duct 17 is disposed in contact with the screen 14 , and an intake duct 17 in which a number of intake nozzles are branched and connected is connected to the side plate 11 b of the housing 11 and is opened above the partition plate 13 . A cotton collection chamber 19 is formed. The fiber cotton sucked from the suction nozzle by the suction force of the suction fan is sucked into the housing 11 via the suction duct 17, and
After adhering to the surface of the rotating screen 14, it is scraped off by scraping rollers 15 and 16 and dropped into the cotton collection chamber 19.

Problems to be Solved by the Invention According to the conventional device of fixed screen type, the screen 7 is manually cleaned by the operator, and the drive of the suction fan 6 must be stopped during the cleaning. In this case, it is not possible to clean the drafting section of each spindle of the spinning machine during operation, resulting in a decrease in yarn quality. Therefore, it is necessary to reduce the number of times the screen 7 is cleaned as much as possible.To do this, a large screen 7 should be used, and even if the amount of fibers attached to the screen 7 increases, the minimum suction pressure should be maintained for a long period of time. It is necessary to set the desired suction pressure _P1 to a value significantly higher than the minimum suction pressure _P2 , as indicated by the polygonal line a shown in FIG. As a result, the suction fan 6 becomes large in size, resulting in a problem of high energy consumption and high cost. Moreover, as described above, cleaning the screen 7 by hand required a great deal of effort and effort, resulting in poor workability.

In addition, according to the conventional screen rotation type device,
Since continuous suction is possible without stopping the suction fan, yarn quality does not deteriorate. However, power to rotate the screen 14 and power to rotate the scraping rollers 15 and 16 for scraping the fibers from the screen 14 are required, which makes the device complicated and expensive, and consumes a lot of power. There was a problem with high costs.

Means for Solving the Problems The present invention has been proposed in view of the above problems, and includes an intake duct in which a large number of intake nozzles installed in each drafting part of each weight arranged in parallel on the machine base are branched and connected. A U-shaped partition plate is disposed approximately at the center inside the sealed casing to form first and second intake chambers on both sides, and
A third intake chamber having an open top surface is formed between both intake chambers, and a main body has an opening for connecting the above-mentioned intake duct at the lower end of the first intake chamber, and a collector attached to the lower part of the main body and opening to the second intake chamber. A storage cabinet that constitutes a cotton chamber;
a switching damper rotatably supported above an upper surface opening of the third intake chamber, and selectively opening one of the first and second intake chambers to communicate with the third intake chamber; The third intake chamber is pivotally supported below the third intake chamber so as to be openable and closable in conjunction with the switching operation of the switching damper, and
An opening/closing damper that selectively opens and communicates either the first intake chamber or the cotton collection chamber with the second intake chamber, and first and second screens arranged to cross the first and second intake chambers. and an intake air generating means that is disposed inside the third intake chamber and applies a suction force to the intake duct via the first or second screen.

Operation When the switching damper is switched to open the first intake chamber in communication with the third intake chamber, the opening/closing damper operates in conjunction with the switching damper, and the cotton collection chamber opens in communication with the second intake chamber. In this state, when the suction force is applied to the suction duct by the suction generating means, the suction air in the suction duct is sucked into the third suction chamber via the first suction chamber,
During this suction process, the fiber cotton mixed in the suction air becomes the first
It sticks to the screen. When the suction pressure decreases to a predetermined value depending on the position of the fiber cotton, the switching damper and the opening/closing damper are activated to open the second intake chamber in communication with the third intake chamber, and the first intake chamber enters the second intake chamber. The chamber opens to communicate. Then, the fiber cotton sucked together with the suction air from the suction duct into the main body passes through the first suction chamber, enters the second suction chamber, and accumulates and adheres on the third screen. At this time, the first
The fibrous cotton adhering to the screen is blown away by the suction air and adheres to the second screen together with the fibrous cotton sucked from the air intake duct. When the fibrous cotton adhering to the first screen is blown away and the first screen is cleaned, the switching damper and opening/closing damper are operated to change the first intake chamber to the third intake chamber and the cotton collecting chamber. The chambers each open in communication with the third intake chamber. Then, the suction air in the suction duct is suctioned into the third suction chamber via the first suction chamber, and during this suction process, the fibers mixed in the suction air adhere to the first screen. On the other hand, since no suction force acts on the second suction chamber, the cotton fibers adhering to the second screen naturally fall into the cotton collecting chamber due to their own weight.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 4.

In the drawing, 21 is the main body, which is the housing 22.
Flat partition plates 23 and 24 are erected inside the chamber to divide it into an intake chamber 24, a vacant chamber 25, and an exhaust chamber 26. Reference numeral 27 denotes a U-shaped partition plate provided as a bridge between the side plate 22a and the partition plate 23 at approximately the center of the intake chamber 24 of the housing 22. This U-shaped partition plate 27 separates the first intake chamber 28 and the second intake chamber on both sides. forming an intake chamber 29;
Further, a third intake chamber 30 having an open top is formed between both intake chambers 28 and 29. Reference numerals 31 and 32 denote a rectifying plate fixed to the upper corner of the intake chamber 24, and 33 an intake duct in which a large number of intake nozzles opening at the lower part of the drafting part of each weight arranged in parallel on the machine base are branched and connected; This intake duct 33 has a connecting opening at the lower end of the first intake chamber 28 of the main body 21 . 34 is an opening/closing door attached to the lower part of the main body 21 (not shown)
This storage box is equipped with a cotton collecting chamber 35 whose upper surface is open and communicates with the second suction chamber 29 through the storage case 34.
form. Reference numeral 36 denotes a switching damper rotatably supported on the main body 21 via a pivot 30 at a position above the upper surface opening 30a of the third intake chamber 30 of the main body 21. Either one of the first and second intake chambers 28 and 29 is selectively opened for communication. The above switching damper 36
The tip edge 36a of the U-shaped partition plate 27 can abut against the bent parts 27a and 27b at the upper opening end, and both ends 37a and 37b of the pivot shaft 37 are connected to the partition plate 3.
It penetrates and protrudes into the cylinder housing chamber 39 and the empty space 25 via 8 and 23. 40 is the main body 21
An opening/closing damper is pivotably supported to the housing 22 via a pivot 41 below the bottom wall 27a of the third intake chamber 30, and this opening/closing damper 40 is connected to the switching damper 3
It rotates in conjunction with the switching operation of No. 6, and selectively opens the second suction chamber 29 to communicate with either the first suction chamber 28 or the cotton collection chamber 35. The tip edge 40a of the opening/closing damper 40 is connected to a regulating plate 42 fixedly attached to a lower corner of the second intake chamber 29 and an arc-shaped lower bottom wall 27a of the U-shaped partition plate 29.
and the shaft end 41a of the pivot 41
is made to penetrate and protrude into the empty space 25 via the partition plate 23. 43, 44 and 45 are the switching dampers 3
6 and the opening/closing damper 40, and are fixed to the top wall 22b and bottom wall 22c of the housing 22, respectively. An operating cylinder 46 is installed in the cylinder housing chamber 39 of the main body 21, and the tip of the rod 47 of the operating cylinder 46 is rotatably connected to the shaft end 37a of the pivot 37 of the switching damper 36 via an arm 48. There is. In addition, the vacant chamber 25 of the switching damper 36 and the opening/closing damper 40 is
The shaft ends 37b, 41a of the pivots 37, 41 projecting to
Arms 49 and 50 are respectively attached and fixed to the
These arms 49 and 50 are connected through a transmission means such as a gear mechanism, a link mechanism, or a chain mechanism disposed in the empty chamber 25, and both dampers 36 and 40 are interlocked by the operation of the actuation cylinder 46. It is configured to do so.

Reference numerals 51 and 52 denote first and second screens horizontally disposed in the first and second intake chambers 28 and 29 of the main body 21 so as to cross the respective chambers 28 and 29; Front wall 22 of body 22
d and the lower bottom wall 27a of the U-shaped partition plate 27, and the second screen 52 is provided between the rear wall 22e of the housing 2 and the upper side wall 27c of the U-shaped partition plate 27. A bridge has been built. 53 is the second intake chamber 29
This third screen 53 is provided close to the partition plate 23 and slightly inclined in the width direction, and its upper end 53a is arranged at the lower side of the 2 screens 52
It is connected and fixed to the side end portion 52a of. Reference numeral 54 denotes an intake air generation means, for example, an intake fan, which is fixed through the partition plates 23 and 24 of the main body 21, and the motor part 54a of the intake fan 54 is arranged to protrude into the third intake chamber 30, and the fan part 54b is used to exhaust air. It is held in chamber 26.

Next, the operation of the apparatus of the present invention will be explained as follows.

By operating the actuating cylinder 46, the switching damper 3
6 in a counterclockwise direction about the pivot 37 until the tip edge 36a abuts the upper bent end 27a of the U-shaped partition plate 27, and as shown in FIG. The first intake chamber 28 is opened to communicate with the opening 30a, and communication between the second intake chamber 29 and the third intake chamber 30 is cut off. Then, in conjunction with the switching operation of the switching damper 36, the opening/closing damper 40 moves around the pivot 41 so that the tip edge 40a moves toward the U-shaped partition plate 27.
The first suction chamber 28 and the second suction chamber 29 are disconnected from each other, and at the same time, the second suction chamber 29 is filled with the cotton collecting chamber 35. The top surface is open for communication. In this state, when the intake fan 54 is driven and a suction force is applied to the intake duct 33 through the first intake chamber 28, the fibrous cotton absorbs the intake air from the intake nozzle installed for each spindle arranged in parallel on the machine base. It is also attracted. The suction air in this suction duct 33 is sucked into the third suction chamber 30 through the first suction chamber 28 of the main body 21, and during this suction process, fiber cotton mixed with air 2 accumulates and adheres to the first screen 51. . When the suction pressure decreases to a predetermined value due to the adhesion of the fibers, the actuation cylinder 46 is actuated, and the switching damper 36 causes its tip edge 36a to abut against the upper bent end 27b of the U-shaped partition plate 27. It rotates clockwise about the pivot 37 until it does. The opening/closing damper 40 is linked to the rotation of the switching damper 36.
However, when the leading end edge 40a abuts against the restriction plate 42 at the corner of the second intake chamber 29, it rotates clockwise about the pivot shaft 41 as a fulcrum. Due to the rotational movement of the switching damper 36 and the opening/closing damper 40, the second intake chamber 29 opens to communicate with the third intake chamber 30, and the communication with the first intake chamber 28 is cut off, as shown in FIG. Also, the first suction chamber 28 communicates with the second suction chamber 29, and the communication with the cotton collection chamber 35 is cut off.
Then, the suction air in the intake duct 33 passes through the first intake chamber 28, enters the second intake chamber 29, and then enters the third intake chamber 29.
The air is sucked into the intake chamber 30. During this suction process, the fiber cotton adhering to the first screen 51 is blown away by the air pressure of the suction air, and the first screen 51 is cleaned. At the same time, the blown fiber cotton is removed from the intake duct 33. The second and third screens 5 of the second intake chamber 29 together with the sucked fiber cotton
It attaches to 2,53. In this way, the first screen 5
The fiber cotton attached to the screen 1 is blown away and cleaned, and the second and third screens 52, 53
When the suction pressure decreases to a predetermined value due to the adhesion of fibers to the air, the actuating cylinder 46 is actuated, and the switching damper 36 and opening/closing damper 40 are rotated and held at the positions shown by solid lines in FIG. The chamber 28 opens into the third suction chamber 30, and the second suction chamber 29 opens into the cotton collection chamber 3.
Opens at 5. Then, the suction air in the suction duct 33 is sucked into the third suction chamber 30 via the first suction chamber 28, and during this suction process, the fibers mixed in the suction air adhere to the first screen 51 as described above. On the other hand, the first intake chamber 28 and the second intake chamber 29 are cut off by the opening/closing damper 40, and the suction force no longer acts on the second intake chamber 29.
The cotton fibers adhering to the screens 52 and 53 naturally fall into the cotton collection chamber 35 due to their own weight. When a certain amount of fiber cotton is stored in the cotton collecting chamber 35, the opening/closing door is opened to take it out to the outside. As described above, according to the device of the present invention, continuous suction is possible with the intake fan 54, and the switching damper 36 and the opening/closing damper 40 can perform continuous suction.
Since the cotton can be collected by changing the change in the suction pressure as appropriate, the initial suction pressure P3 is set to a much lower setting value than that of the conventional device, as shown by the line b in the diagram showing changes in suction pressure in _{Figure 7} . becomes possible. As a result, small screens 51, 52, 53 and intake fan 54 can be used, making it possible to downsize the entire device and save energy.

In the above embodiment, the switching damper 36 and the opening/closing damper 40 are switched according to changes in the suction pressure caused by the intake fan 54, but the present invention is not limited to this, and each of the above-mentioned operations is performed using a timer or the like. The dampers 36 and 40 may also be switched.

Effective Description of the Invention According to the present invention, since continuous suction is possible by the suction air generation means, the drafting section of each spindle of the spinning machine in operation can be constantly cleaned, and yarn quality does not deteriorate. . In addition, since the initial suction pressure can be set to a low setting value, it is possible to use a small screen and suction generation means, making it possible to downsize the entire device, save energy, and significantly reduce costs. Become cheap. Moreover, the structure is simple, and the amount of collected fiber cotton can be greatly increased.

[Brief explanation of drawings]

FIG. 1 is a side sectional view showing an embodiment of the device of the present invention;
FIG. 2 is a side sectional view showing the operating state of the device of the present invention;
3 is a sectional view taken along the line AA in FIG. 2, and FIG. 4 is a schematic perspective view of the apparatus of the present invention. FIG. 5 is a vertical cross-sectional view of a conventional screen-fixing type device, FIG. 6 is a vertical cross-sectional view of a screen-rotating conventional device, and FIG. 7 is a diagram showing the relationship between suction pressure and time. 21... Main body, 22... Housing, 27... U-shaped partition plate,
28...First intake chamber, 29...Second intake chamber, 30...Third intake chamber, 33...Intake duct, 34...Storage housing, 3
5... Cotton collection chamber, 36... Switching damper, 40... Opening/closing damper, 51... First screen, 52... Second screen, 54... Intake air generation means.

Claims (1)

[Claims] 1. An intake duct that branches and connects a large number of intake nozzles installed in each drafting section of each weight installed in parallel on the machine base,
A U-shaped partition plate is disposed approximately at the center inside the sealed casing to form first and second intake chambers on both sides, and a third intake chamber with an open top is formed between both intake chambers. At the same time, the main body has the intake duct connected and opened at the lower end of the first intake chamber, a storage case that is attached to the lower part of the main body and constitutes a cotton collection chamber that opens to the second intake chamber, and the third intake chamber. a switching damper rotatably supported above the top opening and selectively opening one of the first and second intake chambers to communicate with the third intake chamber; and a switching damper below the third intake chamber. It is pivoted so that it can be opened and closed in conjunction with the switching operation of the switching damper.
and an opening/closing damper that selectively opens one of the first suction chamber and the cotton collection chamber to the second suction chamber, and first and second suction chambers arranged to cross the first and second suction chambers. 1. A cotton collection device for a spinning machine, comprising: two screens; and an intake air generating means disposed inside the third intake chamber and applying suction force to the intake duct via the first or second screen.