JP3178629U - Draft roller clearer equipment - Google Patents

Abstract

The present invention provides a draft roller clearer device that can obtain a stable cleaning effect, has a simple structure, and is easy to assemble.
A belt-like clearer support frame 2 disposed in parallel with a rotation axis of a back bottom roller, and protrudes from the clearer support frame 2 corresponding to each roller of the back bottom roller. And a clearer pad material 3 made of high resilience polyurethane rubber that comes into contact with the grooved peripheral surface of the bottom roller.
[Selection] Figure 1

Description

  The present invention relates to a clearer device applied to a draft roller of a spinning machine, and more particularly to a clearer device suitable for cleaning a back bottom roller.

  Conventionally, a draft roller has been provided with a clearer device for the purpose of preventing fibers or impurities in the fibers from adhering or accumulating.

  The draft roller is a draft roller that feeds downstream while niping the sliver, and a plurality of roller pairs including a top roller disposed on the upper side and a bottom roller disposed on the lower side are arranged in a plurality of stages in the sliver feed direction. Specifically, the roller pair is a front roller, a second roller, and a back roller.

  FIG. 5 shows a clearer device provided on each of the front bottom roller 30 and the back bottom roller 31.

  The structure of the clearer device will be described by taking the back bottom roller 31 as a representative. Is protruding.

  Both ends of the clearer support frame 34 are supported by being fitted into support grooves 36 a of the support bracket 36, and the support bracket 36 is fixed to the roller stand 33 by using fastening bolts 37.

  As shown in FIG. 6, the clearer support frame 34 is formed by folding a plate material in half, and a clearer material protruding window 34a is formed in the bent portion, and a window hole is formed on one side surface. 34b is formed.

  The clearer material 35 to be brought into contact with the peripheral surface of the back bottom roller 31 is generally made of synthetic rubber, and ears 35a are formed at the center portions on both sides. The clearer material 35 is inserted from the opening side of the clearer support frame 34.

  The elastic stopper 38 is attached to the clearer support frame 34 from the opening side of the clearer support frame 34. When the bent piece 38 a of the elastic stopper 38 is engaged with the window hole 34 b, the clearer material 35 is moved by the elastic stopper 38. It is gripped and fixed in the clearer support frame 34.

Japanese Utility Model Publication No. 4-17580

  However, since the above-described conventional clearer material 35 has high hardness but low rebound resilience, there is a problem that the contact pressure with respect to the peripheral surface of the back bottom roller becomes weak with time and the cleaning effect is lowered.

  Further, in the conventional clearer device 32, the clearer material 35 must be gripped by the elastic stopper 38 so that the clearer material 35 is not pulled out from the clearer support frame 34. Therefore, a plurality of window holes 34b for locking the elastic stoppers 38 are required in the clearer support frame 34, and the elastic stoppers 38 need to be prepared as separate parts. As a result, the structure of the clearer device becomes complicated, the number of parts increases, and the manufacture of the clearer device becomes complicated.

  The present invention has been made in consideration of the problems in the conventional clearer device as described above, and a first object is to provide a draft roller clearer device capable of obtaining a stable cleaning effect. The second object is to provide a draft roller clearer device that can be simplified in construction and easily assembled.

The present invention is a belt-like clearer support frame arranged in parallel with the rotation axis of the back bottom roller,
A draft provided with a clearer pad material made of a high resilience elastic polyurethane rubber that protrudes from the clearer support frame in correspondence with each roller of the back bottom roller and contacts the grooved peripheral surface of the back bottom roller It is a roller clearer device.

  In the present invention, the clearer pad material can be held in pressure contact with a part of the clearer support frame without using an elastic stopper.

  In the present invention, the clearer support frame may be configured such that a slit is formed in a portion corresponding to each roller of the back bottom roller, and a tip end portion of the clearer pad material is projected through the slit.

  In the present invention, the clearer support frame is provided with an insertion port for bending and inserting the clearer pad material, and a bent portion for locking the rear end portion of the inserted clearer pad material. it can.

  According to the clearer device for a draft roller according to the present invention, a stable cleaning effect can be obtained. In addition, the structure can be simplified and the assembly is facilitated.

(a) is the front view which has a notch of the clearer apparatus which concerns on this invention, (b) is the right view. It is a principal part perspective view of the clearer apparatus shown in FIG. It is a perspective view of the clearer pad material shown in FIG. It is a side view which shows the attachment state of the clearer apparatus shown in FIG. It is a side view which shows the structure and arrangement | positioning of the conventional clearer apparatus. It is a disassembled perspective view of the clearer apparatus of FIG.

  Hereinafter, the present invention will be described in detail based on the embodiments shown in the drawings.

  The draft roller to which the clearer device of the present invention is applied is a sliver that is stretched to a predetermined fineness by passing it through a plurality of roller groups (draft) to form a spun yarn. The rotational speed is adjusted according to the draft rate, but is usually about 100 to 250 times the rotational speed of the back bottom roller.

  FIG. 1 shows an embodiment of a clearer device applied to the back bottom roller having a relatively low rotational speed. FIG. 1 (a) is a front view of the clearer device, and FIG. 1 (b) is a clearer. It is a right view of an apparatus.

  The clearer device 1 is for cleaning the grooved peripheral surface of the back bottom roller, and includes a strip-like clearer support frame 2 arranged in parallel with the rotation axis of the back bottom roller, and the clearer support frame 2 A plurality of clearer pad members 3 are disposed in the longitudinal direction, and each end in the longitudinal direction of the clearer support frame 2 is supported by a pair of holder brackets 4 and 4 erected from a roller stand (not shown).

[1] Clearer support frame In FIG. 2, the clearer support frame 2 is formed in a band plate shape (substantially having a length between staff members) by bending a metal plate having a thickness of about 1 mm into a U-shaped cross section. A bottom plate portion 2a, a rear plate portion 2b bent at a right angle from the bottom plate portion 2a, an upper plate portion 2c extending from the rear plate portion 2b so as to be parallel to the bottom plate portion 2a, and the rear plate A front plate portion 2d extending from the upper plate portion 2c in parallel with the portion 2b is provided.

  By forming the front plate portion 2d shorter than the rear plate portion 2b, the clearer support frame 2 is formed with an opening portion 2e continuously in the longitudinal direction, and this opening portion 2e is formed behind the clearer pad material 3. It functions as an insertion port for inserting an end portion curved.

  Further, slits 2f are formed in the upper plate portion 2c at positions corresponding to the back bottom roller (eight positions in the present embodiment), and the tip portions 3a of the respective clearer pad materials 3 are projected through the slits 2f. It is like that.

  Further, the clearance S between the front plate portion 2d and the rear plate portion 2b is the thickness t of the clearer pad material 3 (see FIG. 3), and the clearer pad material 3 inserted into the clearer support frame 2 is It is gripped by the front plate portion 2d and the rear plate portion 2b.

[2] Clearer pad material In FIG. 3, the clearer pad material 3 is formed by punching a high resilience polyurethane rubber sheet having a thickness of 2 mm into a substantially square shape. An ear 3b is provided.

  The clearer pad material 3 having the above-described configuration can be bent and pushed from the opening 2e in an oblique direction (arrow B direction) as shown in FIG. After the portion 3a protrudes through the slit 2f, the shoulder portions 3b 'and 3b' of the pair of ear portions 3b and 3b abut against the edge of the slit 2f.

  In this state, the rear end portion 3c of the clearer pad material 3 is fitted inside the bottom plate portion 2a of the clearer support frame 2, while the ear portions 3b and 3b are in pressure contact with the edge portion of the slit 2f. Thus, the clearer pad material 3 is held in pressure contact with a part of the clearer support frame 2 without using an elastic stopper.

  The bottom plate portion 2a functions as a bent portion for locking the rear end portion 3c of the clearer pad material 3 inserted into the clearer support frame 2.

  Table 1 is a physical property comparison table of the clearer pad material of the present invention and the conventional clearer pad material.

  The polyurethane rubber molded into the clearer pad material 3 is of a type that has excellent wear resistance and suppresses hydrolysis.

  Since the clearer pad material 3 of the present invention uses the polyurethane rubber, the resilience is greatly improved as compared with the conventional synthetic rubber (NBR). By utilizing the high resilience, the cleaning effect on the draft roller could be maintained for a long time. In addition, when inserting into the clearer support frame 2 having the bottom plate portion 2a, the clearer pad material can be inserted with a large curvature, so that there is an advantage that the clearer pad material does not need to be fixed by an elastic stopper.

[3] Attachment of Clearer Device FIG. 4 is a side view showing a state where the clearer device 1 is mounted on a pair of holder brackets 4.

  In the figure, the holder bracket 4 is formed with a mounting groove 4a for mounting the clearer support frame 2, and a jaw portion 4b raised like a bowl is formed on the front side of the mounting groove 4a. Yes.

  Further, a receiving portion 4c that can come into contact with the rear plate portion 2b of the clearer support frame 2 protrudes above the mounting groove portion 4a.

  When each end portion of the clearer device 1 is inserted into the bottom portion 4d of the mounting groove portion 4a and tilted in the direction opposite to the draft direction, the clearer pad material 3 gets over the back bottom tora 10b while elastically deforming, and the rear plate of the clearer device 1 The portion 2b comes into contact with the receiving portion 4c, and the clearer device 1 is positioned. As a result, the clearer device 1 is disposed in parallel with the rotation axis of the back bottom roller 10b.

  In this state, the tip 3a of the clearer pad material 3 is aligned with the center line C.V of the back bottom roller 10b. It will contact the roller peripheral surface slightly behind L (in the sliver feed direction).

  Since the clearer pad material 3 is in contact with the roller peripheral surface of the back bottom roller 10b while being elastically deformed, the clearer device 1 always presses the clearer device 1 against the mounting groove 4a and the receiving portion 4c. Therefore, the clearer device 1 is held in the mounting groove 4a without using any special fixing means.

[4] Operation of Clearer Device The back bottom roller 10b that rotates while being in contact with the back top roller 10a is composed of a grooved roller, and a large number of concave grooves 10c in the direction intersecting the sliver feeding direction on its peripheral surface. Is formed.

  When the back bottom roller 10b rotates at a low speed in the direction of arrow E, the edge 3a '(see FIG. 3) of the tip 3a of the clearer pad material 3 is first fitted into one of the grooves 10c, and then The clearer pad material 3 is elastically deformed by being pushed by the ridge between the concave grooves 10c and 10c, and is fitted into the next concave groove 10c by the restoring force accumulated in the clearer pad material 3 due to the elastic deformation. By clogging and repeating this operation, the tip 3a of the clearer pad material 3 vibrates and cleans the roller peripheral surface of the back bottom roller 10b.

DESCRIPTION OF SYMBOLS 1 Clearer device 2 Clearer support frame 2a Bottom plate part 2b Rear plate part 2c Upper plate part 2d Front plate part 2e Opening part 2f Slit 3 Clearer putt material 3a Front end part 3b Ear part 3c Rear end part 4 Holder bracket 4a Mounting groove part 4b Jaw portion 10a Back top roller 10b Back bottom roller 10c Groove

Claims (4)

A belt-like clearer support frame arranged parallel to the rotation axis of the back bottom roller;
A clearer pad material made of a high resilience elastic polyurethane rubber is provided so as to protrude from the clearer support frame corresponding to each roller of the back bottom roller, and is in contact with the grooved peripheral surface of the back bottom roller. A draft roller clearer device.   The clearer device for a draft roller according to claim 1, wherein the clearer pad material is held in pressure contact with a part of the clearer support frame without using an elastic stopper.   3. The draft roller according to claim 1, wherein the clearer support frame has a slit formed at a portion corresponding to each roller of the back bottom roller, and a tip end portion of the clearer pad material protrudes through the slit. Clearer device.   2. The clearer support frame is provided with an insertion slot for bending and inserting the clearer pad material, and a bent portion for locking a rear end portion of the inserted clearer pad material. The clearer device for a draft roller according to any one of claims 1 to 3.