JPH03199432A - Drafting apparatus - Google Patents

Abstract

PURPOSE:To remove fly waste attached to a draft roller by contacting a clearer roller between the top rollers of a draft roller, peeling the fly waste with a comber while intermittently rotating the clearer roller and sucking the peeled fly waste with a suction member. CONSTITUTION:A clearer roller 12 having a cloth 14 pasted on the circumference is contacted with a back top roller 8 and a top apron 7a and the rotation of the clearer roller 12 is intermittently stopped with a ratchet 16 to peel the fly waste attached to the roller 12 with a comber 17. The peelded fly waste is sucked with a suction means 18 and removed through a duct 20.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a draft device used in a spinning machine.

[Prior art]

Generally, the draft device used in spinning machines consists of a front roller, a middle roller, and a pair of nip rollers.
Back rollers are arranged one after another, and an apron belt is stretched around the middle roller among the rollers, and other nip rollers are composed of metal rollers and rubber rollers. Fluff, etc. adheres to the circumferential surface of the roller. Therefore, an apparatus has been proposed that removes fluff by installing an undercleaner roller that comes into contact with the back bottom roller and the middle bottom roller. Examples of such fluff removal devices include:
It is described in Utility Model Publication No. 59-31712.

[Problem to be solved by the invention]

An untarnisher roller with a rasher cloth wrapped around the circumferential surface of the roller body as described above is brought into contact with an apron stretched over a back bottom roller and a middle bottom roller, and the fluff adhering to the roller is peeled off. If the back bottom roller is rotated intermittently by engaging claws protruding on the circumferential surface of the roller with protrusions protruding from the roller body, changing the position of the contact surface of the rasher cloth, However, there is a problem in that the fluff adhering to the undercleaner roller must be removed by a worker.

〔the purpose〕

An object of the present invention is to automatically remove fly fluff adhering to the roller of a draft device.

[Means to solve the problem]

In order to achieve the above object, the draft device of the present invention has the following features:
In a draft device in which a pair of draft rollers is formed by a top roller and a bottom roller, and a plurality of the draft rollers are installed, a clearer roller that abuts the top roller is provided between the top rollers of the draft rollers;
An intermittent rotating member that stops the rotation of the clearer roller, and a comb that comes into contact with the clearer roller and peels off fluff that has adhered to the roller! ! I,! A cleaning mechanism consisting of a suction member that sucks up the fluff is provided.

In addition, the clearer roller and comber are rotated using the rotation of the draft roller as a driving source, and the suction pipe of the suction member is connected through a hole drilled in the rotation fulcrum shaft of the top arm for attaching the top roller. If the configuration is connected to a negative pressure source, fluff can be reliably removed.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of one embodiment of a draft device of the present invention will be described based on the drawings.

The IC front bottom roller, 2 a middle bottom roller, and 3 a back bottom roller are installed on a machine stand (not shown) and are rotatably mounted on a bearing 21 (f=j). Reference numeral 4 designates a top arm rotatably attached to a bearing 21 via a shaft body 5. The shaft body 5 is provided with a hole 5a. Reference numeral 6 denotes a front top roller having rollers 6b rotatably attached to both ends of a shaft 6a. 7 is a middle top roller, and 8 is a back top roller, the structure of which is the same as the front top roller 6 described above. These top rollers 6.7.8 are vertically movably mounted on the top arm 4 and are supported by springs (not shown).
The bottom rollers 1, 2, and 3 are brought into contact with each bottom roller 1, 2, and 3 with a predetermined surface pressure to form a nip roller. Further, pins 8a, 8 are provided on the circumferential surface of the back top roller 8.
b is a protrusion.

The above-mentioned middle bottom roller 2 and middle top roller 7 are attached to the bottom apron 2a and the top apron 7a to form a pair of nip roller portions.

9 is the clear TFI1 installed integrally on the T.L farm 4.
The details are shown in Figure 3.

Reference numeral 10 denotes a frame body formed in a shape, and is attached to the top arm 4 with pins 11. Reference numeral 12 denotes a roller integrally formed with the shaft body 13, and a cloth 14 such as a lace cloth is adhered to the circumferential surface. , and teeth 12a are formed at the peripheral end of the roller 12.

15 is a support member attached to the frame 10;
3 is rotatably supported, and the roller 12 is brought into contact with the back top roller 8 and the top apron 7a with a predetermined surface pressure. 16 is a ratchet whose one end is attached to the frame 10, and which engages with a pawl 16a or teeth 12a formed on the roller 12 to fix the roller 12, and whose other end protrudes from the back top roller 8. When it comes into contact with the provided pin 8a, the claw portion 16a is removed from the tooth 12a and rotated by the top apron 7a and the back top roller 8. A comb 17 is rotatably attached to the shaft body 13, and has a serrated 3+1 separation part 17a for peeling off the fluff attached to the cloth 14 attached to the roller 12, and a comb protruding from the back top roller 8. It is formed by a leg portion 17b that comes into contact with the pin 8b.

When the pin 8b comes into contact with the leg 17b and pushes up, the comb 17 rotates about the shaft 13, and the peeling part 17a is pushed up along the surface of Ai14, and the pin 8
b passes the leg portion 17b, the peeling portion 17a returns to its original position. A suction member 18 is rotatably attached to the shaft body 5, and is formed by a suction tube 18a and a connecting member 18b.

A communication hole 18b1 is bored in the connecting member 18b,
When the hole 5a and the top arm 4 are fixed, they communicate,
When separated, the hole 5a is closed.

The suction tube 18a is attached to the frame 10 so that the suction port is located close to the comber 17, and rotates integrally with the top arm 4. Further, the hole 5a and the tactile member 20 are connected by a pipe 19. Therefore, when the top arm 4 is lifted to separate the top roller from the bottom roller, it is cut off from the duct 20, and when the top arm 4 is pushed down and the top roller is pressed against the bottom roller, it is communicated with the duct 20 and a suction force is applied. The fluff peeled off from the cloth 14 by the saw teeth of the peeling part 17a of the comb 17 described above is suctioned and removed. In addition, the pipe 19 may be made into a flexible hose and directly connected to the suction pipe a.

When the sliver is troughed in the above-mentioned draft device, the sliver is placed on the bottom roller 1.2.3 and fixed by pushing down the top arm 4. Each top roller 6.7.8 is then pressed against each bottom roller 1.2.3 to nimp the sliver, and as the bottom rollers 1.2.3 rotate, the sliver is transferred to a yarn forming device (not shown). Transport to. At this time, since the ratchet 16 is engaged with the teeth 12a formed on the roller 12,
While the roller 12 is in a stopped state, the cloth 14 attached to the circumferential surface of the roller is in contact with the back top roller 8 and the top apron 7a of the middle top roller rough.

Therefore, the fluff adhering to the circumferential surfaces of the top roller 8 and top apron 7a is peeled off by the cloth 14.
Adhere to the top. Since the draft roller described above rotates continuously, the pin 8 protruding from the back top roller 8
a and 8b are also rotating, and when the roller 8 rotates once,
Pin 8a forces ratchet 16 out of engagement with tooth 12a.

Then, the roller 12 is r! with the back top roller 8! J
The cloth 14 is rotated by the frictional force, and the contact position of the cloth 14 with respect to the top roller 8 and the top apron 7a changes.

When the roller 12 rotates due to this operation, the fluff adhering to the cloth 14 moves to the peeling part 17a of the comb 17. Then, the back roller 8 rotates and the leg 1 is held by the pin 8b.
7b is pushed up, the comb 17 rotates using the shaft 13 as a fulcrum, and the peeling part 17a moves on the cloth 14 to remove the fluff adhering to the cloth 14. The peeling part 1
The fluff stripped off by the saw teeth 7a passes through the suction tube 18a of the suction member 18, the connecting member 18b, the hole 5a of the shaft body 5, and the tube 19, and is suctioned and removed by the tact 20.

The above-mentioned suction pipe 18a communicates with the tact 20, which is a pressure source during the trough I-processing of the sliver fiber bundle by pushing down the tube arm 4 through the connecting member 18b.

〔Effect of the invention〕

In the draft device of the present invention, a pair of draft rollers is formed by a top roller and a bottom roller, and in the draft device in which a plurality of the draft rollers are installed, a clearer is provided between the top rollers of the draft rollers and is in contact with the top roller. A roller, an intermittent rotation member that stops the rotation of the clearer roller, a comb that comes into contact with the clearer roller and peels off fluff adhering to the roller, and a suction member that sucks the peeled fluff. Since this structure is equipped with a cleaning mechanism, fluff adhering to the roller of the drafting device can be automatically and reliably removed.

Further, since the clearer roller and the comb are rotated using the rotation of the draft roller as a drive source, the structure of the drive mechanism can be simplified and the entire draft device can be made compact.

Furthermore, since the suction pipe line of the suction member is connected to a negative pressure source through a hole drilled in the rotation fulcrum shaft of the top arm for attaching the top roller, the negative pressure source is connected to the heel. It is possible to connect to or disconnect from.

[Brief explanation of drawings]

FIG. 1 is a schematic front view showing one embodiment of the draft device of the present invention. FIG. 2 is a schematic four side view. FIG. 3 is a schematic perspective view showing details of the fluff removing section in FIG. 1. 1: Front bottom roller, 2: Middle bottom roller, 3: Back bottom roller, 4 Ni dot arm, 5.13: Shaft, 6: Front top roller, 7: Middle top roller, 8: Back top roller, 9: N'+'j j? 6 machine top, 10: frame, 12: roller, 14: cloth, 15: support member, 16: ratchet, ] 7: comb, 18: suction member, 1: pipe, 20: duct, 21: bearing,

Claims (1)

[Scope of Claims] 1) In a draft device in which a pair of draft rollers is formed by a top roller and a bottom roller, and a plurality of the draft rollers are installed, a clip that abuts the top roller is provided between the top rollers of the draft rollers. A clearer roller, an intermittent rotating member that stops the rotation of the clearer roller, a comb that comes into contact with the clearer roller to peel off fluff adhering to the roller, and a suction member that sucks the peeled fluff. A draft device characterized in that a cleaning mechanism comprising: 2) The draft device according to claim 1, wherein the clearer roller and the comber are rotated using the rotation of the draft roller as a driving source. 3) The drafting device according to claim 1, wherein the suction pipe line of the suction member is connected to a negative pressure source through a hole bored in the rotation fulcrum shaft of the top arm for mounting the top roller.