JPH0715781U - Cleaning device for card doffing device - Google Patents

Abstract

(57) [Abstract] [Purpose] To remove the cotton dust generated at the web outlet of the card doffing device. A suction port 22 is provided in front of a nip line 9 formed by a pair of upper and lower crash rollers 5, 6 and below the left and right ends of a web outlet 14, and the suction port 22 is connected to a suction type cotton collecting device. The cotton wool generated from both widthwise ends of the web 14 fed from the web outlet toward the web converging device 15 is sucked and removed from the suction port 22.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cleaning device for a card (carding machine) doffing device.

[0002]

[Prior art]

 Conventionally, the card doffing device is arranged between the doffer and the web concentrator, and includes a doffing roller for stripping the web from the doffer and upper and lower crash rollers for feeding the stripped web toward the web converging device. Each of them is rotatably supported, and a thinly spread web passes between them, and is converged on a card sliver by a web converging device in front of the exit of the crash roller.

[0003]

[Problems to be solved by the device]

 Since the web is thin, there is little fiber entanglement, especially at both ends of the web, and it is easy to scatter at the exit of the crush roller.The scattered dust may wind around the end of the roller in the doffing device described above, or dust may accumulate. Then, it becomes a lump and is supplied to the web converging device. As a result, it was necessary to clean the rollers frequently, and the sliver could be broken or the quality of the sliver could be deteriorated due to the inclusion of dust. An object of the present invention is to provide a cleaning device for cleaning such fly dust in a doffing device.

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, in the present invention, a card is provided between the doffer and the web concentrator, which is provided with a doffing roller for stripping the web from the doffer, and the stripped web is fed to the web converging device. In this doffing device, suction ports are provided at both ends of the web outlet of the doffing device, which face the inlet of the web focusing device, and the suction ports are connected to a suction type cotton collecting device.

[0005]

According to the present invention, the web passing through the web outlet of the doffing device has cotton dust generated from both ends thereof, and this cotton dust is sucked and removed to the cotton collecting device by the suction airflow from the suction port. It As a result, less dust is wrapped around the roller end of the doffing device, the cleaning cycle of the roller can be lengthened, and lumps of dust are not mixed into the normal sliver, causing sliver breakage and deterioration of sliver quality. Can be prevented.

[0006]

【Example】

 As shown in FIG. 1, in a doffing device 10 disposed between a doffer 1 and a web converging device 15, a doffing roller 2 is integrated with a frame 3 so that the doffing roller 2 is adjacent to the doffer 1. It is rotatably supported on the stand 4. The doffing roller 2 has a cloth or metallic wire wound around the surface thereof. A pair of upper and lower crash rollers 5 and 6 are arranged in proximity to the doffing roller 2. The bottom crash roller 6 is rotatably supported by the left and right roller stands 4 via bearings and is connected to a drive system (not shown).

The top crush roller 5 is rotatably supported via a bearing by an elevating body 7 that is fitted in a guide hole 8 of a roller stand 4 so as to be able to move up and down. The pressure device is used for pressure contact or for maintaining a predetermined gap. The web 13 stripped from the doffer 1 by the doffing roller 2 is nipped by the upper and lower crash rollers 5, 6, and the nip line 9 The web exit 14 on the front side is fed toward the web converging device 15. The web converging device 15 includes a gatherer 16 and a trumpet 17, and converges the wide web 13 fed from the web outlet 14 onto the card sliver 18. In front of the web converging device 15, there is provided a calender roller 19 for feeding the card sliver 18 to a coiler device (not shown).

The left and right roller stands 4 are provided with through holes 20 at positions below both ends of the web outlet 14 in the axial direction, and pipes 21 are fitted and mounted in the through holes 20 to open the pipes 21 in the roller direction. The part is used as the suction port 22, and the opening part 23 protruding to the outside of the roller stand 4 is connected to the cotton collecting chamber 31 of the cotton collecting device 30 by piping. In the cotton collecting device 30, a filter net 34 separates the cotton collecting chamber 31 from a blower chamber 33 in which a suction blower 32 for generating a suction air flow is installed. The control device 40 of the suction blower 32 monitors the rotation state of the doffer 1 by a detection signal from the rotation detector 41 connected to the drive system of the doffer 1, and the doffer 1 is stopped or is set in advance. The suction blower 32 is programmed so that it does not act when it is not in a fixed high-speed steady operation state (for example, at the time of starting the mouth or during low-speed operation during can replacement).

When the machine stand is activated, the cylinder and doffer 1 rotate. Immediately after the start-up, since the rotation of the doffer 1 is low, the suction blower 32 is not operated by the control device 40. When the duffer 1 is rotated in a predetermined steady state, the suction blower 32 operates to generate a suction airflow at the suction port 22, and the airflow reaches the vicinity of the web outlet 14. In this state, the web 13 stripped from the doffer 1 by the doffing roller 2 is nipped by the upper and lower crush rollers 5 and 6 and fed from the web outlet 14 toward the gatherer 16.

Between the web outlet 14 and the gatherer 16, the wide and thin web 13 has less entanglement of fibers at the left and right ends thereof, and the moving speed of the web 13 is high. As shown in FIG. 3, the cotton wool 45 is generated. Among the cotton wool 45, the cotton dust 45 scattered downward is sucked into the suction port 22 by the suction airflow generated in the suction port 22 and collected. It is collected in the cotton device 30. Further, the fly cotton that is scattered upward and wrapped around the ends of the crush rollers 5 and 6 and the doffing roller 2 is blown toward the suction port 22 by the accompanying airflow accompanying the rotation of the rollers, and 45 is less likely to be wound around the crush rollers 5, 6 or the shaft of the doffing roller 2, and the cleaning cycle of that portion can be significantly lengthened. In addition, since the wrapping is reduced in this way, a fly fluff mass is less likely to be formed, and this lump is less likely to be mixed into a normal sliver 18, so that deterioration of the sliver quality can be prevented.

In this embodiment, since the suction is not performed when the machine stand with no fly dust generation and when the doffer is rotating at low speed, and the suction is performed only when the fly dust is generated, as compared with the case where the suction is always performed, It saves energy. The suction ports may be provided at both ends of the web outlet so that the suction airflow can suck the cotton dust generated from the web end of the web outlet, for example, at both ends of the web converging device. . Furthermore, in the present embodiment, the doffing device has been described as having a doffing roller and upper and lower crash rollers, but a device having only the doffing roller can also be applied. In this case, the web outlet is a portion where the web is sent from the doffing roller to the web concentrator.

[0012]

[Effect of device]

 As described above, according to the device of the present invention, since the suction ports for generating the suction airflow are provided at both ends of the web outlet of the doffing device, the wind generated from both ends of the web from the web outlet toward the web converging device. The cotton can be removed by suction, and the wrapping around the roller end in the doffing device can be reduced, and the cleaning cycle of the roller can be extended. Further, by doing so, it is possible to eliminate the occurrence of a fluff lump, and to prevent sliver breakage and deterioration of the sliver quality due to mixing of the fluff clump into a normal sliver.

[Brief description of drawings]

FIG. 1 is a diagram showing a card doffing device.

FIG. 2 is a view showing a mounting state of a crush roller and a suction port.

FIG. 3 is a schematic plan view of a doffing device.

[Explanation of symbols]

1 doffer, 2 doffing rollers, 13 webs, 14 web exits, 15 web converging devices, 22
Suction port, 30 cotton collecting device

Claims (1)

[Scope of utility model registration request] 1. A doffing device for a card, comprising a doffing roller disposed between a doffer and a web concentrator for stripping the web from the doffer, and feeding the stripped web to the web converging device. A cleaning device for a card doffing device, characterized in that suction ports are provided at both ends of the web outlet facing the web focusing device, and the suction ports are connected to a suction type cotton collecting device.