JPH0622370U - Web concentrator - Google Patents

Abstract

(57) [Summary] [Structure] At the ends of the bottom wall 7b of the sliver guide 7, in the discharge direction of the air discharged from the sliver that does not cross the sliver passage 14 and is discharged from the opening 12 when the trumpet 8 is focused. A pair of air nozzles 15 that blows out is provided. [Effect] The air blown from the sliver that is discharged from the opening when the sliver is focused blows off the cotton dust adhering to the inside of the sliver guide and near the opening with the air from the air nozzle.
It is possible to prevent the adhered cotton wool from being taken into the sliver.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a web concentrator for concentrating a wide thin web stripped from a doffer of a card machine to form a sliver.

[0002]

[Prior art]

 A conventional web focusing device is disclosed, for example, in Japanese Patent Laid-Open No. 60-65119, which has an opening between a web guide element (gatherer) and a trumpet for discharging air flowing back from the sliver when the sliver is focused. A sliver guide (funnel-shaped guide element) is formed, and the web stripped from the doffer is gathered with a gather and formed into a sliver. Then, this sliver is further gathered with a sliver guide and a trumpet, and compressed by focusing. The air discharged from the sliver was discharged from the opening of the sliver guide.

[0003]

[Problems to be solved by the device]

 In the conventional web concentrator, when air is released from the sliver during sliver focusing by the sliver guide and trumpet, it is prevented from flowing backward inside the sliver guide and trumpet and adversely affecting the sliver quality. The air released from the sliver is sometimes discharged.However, as the discharged air is blown out, the fly cotton adheres to the inside of the sliver guide, the vicinity of the opening, or the outer periphery of the machine. There was a problem that adhered cotton wool accumulated due to long-term operation and was often taken into the sliver, and the sliver quality was still adversely affected.

[0004]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention provides a web focusing device having a sliver guide having an opening for discharging air generated from the sliver at the time of focusing the sliver between the web guide element and the trumpet. And an air nozzle that blows out air in the discharge direction of the air discharged from the opening.

[0005]

[Action]

 For example, if the sliver guide is a box-shaped one with an opening at the top, and an air nozzle is installed on the inner bottom wall of this sliver guide so that air is blown out intermittently or continuously, the air nozzle can be operated from the air nozzle. The blown air flows above the opening along the inner wall of the slide guide. Therefore, when the machine is in operation, the air flies adhering to the inner wall surface of the sliver guide and the vicinity of the opening due to the air discharged from the opening of the sliver guide are blown off by the intermittent spraying of the air nozzles, and the air flies inside the sliver guide and near the opening Accumulation is prevented.

[0006]

【Example】

 Next, an embodiment of the web focusing device 1 of the present application will be described with reference to FIGS. 2 is a doffer of the card machine, 3 is a stripping roller close to the doffer, 4 is a pair of upper and lower delivery rollers arranged in front of the stripping roller, and 5 is a delivery roller 4, 4. It is a pair of upper and lower calendar rollers that are arranged at intervals. Between the delivery roller 4 and the calender roller 5, there is arranged a web focusing device 1 which is integrally assembled with a gatherer 6, a sliver guide 7 and a trumpet 8 which are exemplified as a web guide element. The web focusing device 1 and the calendar roller 5 are integrally attached to the frame via a well-known moving mechanism, and can be moved to a position where a working space is formed between the web focusing device 1 and the calender roller 5 during work. ing.

Next, the web focusing device 1 will be described. First, the gatherer 6 bends the upper and lower portions of a plate-like member having a length in the machine width direction that is substantially the same as that of the delivery roller 4, and the web introduction hole 11 is formed at the center of the plate width member in the machine width direction. And is configured to collect a wide and thin web fed from the feed roller 4. On the front surface of the gatherer 6, a sliver guide 7 having an U-shaped cross section is fixed to the gatherer 6 so as to cover the introduction hole 11. The front wall 7a of the sliver guide 7 is provided with a guide hole 13 corresponding to the introduction hole 11 of the gatherer 6 and having substantially the same diameter. Further, a hollow conical trumpet 8 continuous with the guide hole 13 is fixed to the front surface of the front wall 7a of the sliver guide 7. When the sliver focused by the gatherer 6 passes through the inside of the sliver guide 7 and is further focused by the trumpet 8, the air discharged from the sliver compressed by this focusing is moved upward from the opening 12 of the sliver guide 7. It is designed to be discharged to.

Further, the sliver passage 14 is not crossed on the left and right sides of the bottom wall 7 b of the sliver guide 7 across the sliver passage 14 in the discharge direction of the air discharged from the opening 12 of the sliver guide 7. As described above, a pair of air nozzles 15 and 15 for ejecting the cleaning air flow are provided. These air nozzles 15 and 15 are connected to a compressed air source (not shown) so as to intermittently or continuously blow out. It is assumed that a suction airflow is generated by the suction device 30 above the web focusing device 1.

Next, the operation of the web focusing apparatus 1 of this embodiment will be described. First, as the card machine is operated, the air nozzles 15 and 15 are intermittently blown out, so that the inside of the sliver guide 7 does not traverse the sliver passage 14 and a lacking cleaning airflow is generated in the discharge direction of the discharge air discharged from the opening 12. The wide and thin web stripped from the doffer 2 when the machine base is operated is fed to a gatherer 6 by a pair of feed rollers 4 and focused, and the focused sliver is fed to a sliver guide 7 After passing through the sheet, it is focused again by the trumpet 8 and sent to the pair of calender rollers 5. When the sliver passes the trumpet 8 in the moving operation of the sliver, the air contained in the sliver itself due to the compression of the sliver is discharged from the opening 12 of the sliver guide 7.

In addition, in the movement operation of the sliver, a small amount of cotton wool is also blown out by the discharge air discharged from the opening 12 of the sliver guide 7, and this cotton wool adheres to the inside of the slider guide 7 and the vicinity of the opening 12. To do. The adhered cotton wool is blown off by the air currents blown from the pair of air nozzles 15 and sucked and collected by the suction device 30 above the web focusing device 1, and the inside of the sliver guide 7 and the vicinity of the opening 12 are cleaned, and thus The sliver quality is improved because there is no adhering dust on the sliver.

Next, referring to FIG. 4, another embodiment of the web focusing apparatus 1 of the present invention will be described. The sliver guide 7 attached to the front surface of the gatherer 6 is formed in a cylindrical shape with an opening 12 for discharging the air discharged from the sliver at the time of converging, and a guide hole 13 at the center thereof goes forward. The sliver guide 7 is formed into a conical hole with a smaller diameter, and the sliver focused by the gatherer 6 is refocused by the sliver guide 7. An attachment bracket 16 is attached to the front surface of the gatherer 6, and air nozzles 15 and 20 are provided in parallel on the attachment bracket 16 so as to correspond to the sliver guide 7 and the trumpet 8. The air nozzle 15 is directed from below the sliver guide 7 to a substantially central portion of the outer peripheral lower portion of the sliver guide 7, and the air flow blown from the air nozzle 15 is opened from the lower portion of the sliver guide 7 along the outer periphery to the opening 12. It is designed to flow upwards. Therefore, when the machine is in operation, the air nozzles 15 are operated to discharge air from the openings 12 and blown dust adhering to the vicinity of the openings 12 and the outer periphery of the sliver guide 7 are blown off and sucked and collected by the suction device above. Further, the air nozzle 20 is directed from below the trumpet 8 to a substantially central portion of the outer peripheral lower portion of the trumpet 8, and the air flow blown from the air nozzle 20 blows up the cotton wool adhering to the outer peripheral portion of the trumpet 8 upward. It is designed to be skipped and sucked and collected by a suction device.

Although the fixed type gatherer 6 is illustrated as the web guide element in the above-mentioned embodiment, a pair of web guide guides is provided as disclosed in Japanese Patent Laid-Open No. 55-71822. May be.

[0013]

As described above, the web concentrator of the present invention is configured to include the air nozzle that does not traverse the sliver passage and blows air in the discharge direction of the air discharged from the sliver discharged from the opening of the sliver guide. Therefore, it is possible to prevent blown dust adhering to the inside, the outer periphery and the vicinity of the opening of the sliver guide from being blown off and accumulated by the action of the air of the air nozzle by the operation of the machine stand, and to prevent the accumulated blown cotton from being taken into the sliver. However, since the air blown out from the air nozzle does not directly act on the sliver, it does not deteriorate the quality of the sliver.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a web focusing device.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a perspective view of the web focusing apparatus according to the first embodiment.

FIG. 4 is a perspective view of a web focusing device according to a second embodiment.

[Explanation of symbols]

1 web focusing device, 6 gatherer (web guide element), 7 sliver guide, 8 trumpet, 1
2 openings, 14 sliver passages, 15 air nozzles

Claims (1)

[Scope of utility model registration request] 1. A web converging device comprising a sliver guide having an opening for discharging air generated from the sliver at the time of converging the sliver between the web guide element and the trumpet, wherein the sliver passage is not crossed and the sliver passage is not traversed by the opening. A web concentrating device comprising an air nozzle that blows air in the discharge direction of the discharged air.