JPS6038685Y2 - Endless clearer drive device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a driving device for an endless clearer installed on the upper part of a drafting device of a spinning machine, and in particular, a rotational driving device for an endless clearer (hereinafter simply referred to as an apron) with a simple configuration. At the same time, it is easy to handle and maintain.

Since fiber waste and dust may adhere to the draft top roller or bottom roller constituting the drafting device and wind the fibers being spun, a clearer device is generally installed opposite to the draft top roller or bottom roller.

In addition, these clearer devices perform cleaning by bringing an apron into contact with the top surface of the draft top roller group or the bottom surface of the bottom roller group, and this apron is actively rotated to remove attached fiber debris and always create a new clearer surface. A roller device is used in which a scraping comb is placed opposite the apron at a separate location to automatically scrape off the fiber debris deposited on the apron when the apron is brought into contact with a group of rollers.

By the way, such a roller device is generally installed inside a roller cover, etc., and since this roller cover needs to be installed so that it can be retracted for cleaning the rollers, threading the roving, etc., the structure of the apron driving means is requires special arrangement.

However, the conventional apron drive means rotates the apron drive roller from a rotating shaft provided at the bottom outside of the roller stand via a connecting rod, and when the roller cover swings to retreat, this connecting rod is temporarily rotated. It was necessary to interpose special connecting means that can be removed or expanded and contracted.

As a result, the structure of the driving means becomes complicated, which may cause failures or require troublesome maintenance.

The present invention has been developed with these points in mind, and is designed to completely eliminate the above-mentioned operation connecting rod, thereby making the retracting operation of the roller cover smooth, and making the structure a simple mechanism that is easy to handle and maintain. This makes management easier.

However, in this invention, the clearer roller for driving the apron is driven by providing an intermittent rotation mechanism in a part of the clearer roller shaft to actively drive the clearer roller shaft in one direction, and the swinging The frame consists of a cam disc attached to a shaft disposed at the rear lower part of the draft roller group, and a cam ball formed on the lower side of the swinging frame with an arm rod formed at its tip, and facing each other, and at the rear of the swinging rod. An arm rod is formed at the top of the swing frame to lock the end of the tension spring so as to bring the cam ball into contact with the cam disk, the other end of the spring is supported behind the roller cover, and the comb is mounted on the top of the swing frame. It is constructed by supporting rods.

The present invention will be explained in detail below based on the drawings. However, the drawings show an example of a specific implementation of the present invention, and the present invention is not limited to these illustrated examples. The present invention can be similarly applied to apron clearer devices with a part of the configuration changed or with other configurations.

Fig. 1 is a cutaway plan view of essential parts showing one staff of a clearer device to which the present invention is applied, Fig. 2 is a side view in the direction of the arrow on the lower side of Fig. 1, and Figs. 3 and 4 are the same as those in Fig. 1. 5 is an enlarged plan view of the broken part of FIG. 1 showing the essential parts of the present invention; FIG. 7 is an explanatory diagram of the operation of FIG. 6, and FIG. 8 is a schematic diagram showing another configuration example of the present invention.

In these figures, the clearer device to which the present invention is applied includes: an opening provided in the upper part of the draft roller group 1 so that it can be swung away; - an apron 3 provided inside the la cover 2 and in contact with each top roller group are passed through the clearer roller 4 and the free roller 5, respectively, and the shafts 4a and 5a of the clearer roller 4 and the free roller 5 are connected to brackets 4b provided inside the roller cover 2, respectively.
Both ends are supported by and 5b.

Although FIG. 1 shows a clearer device in which one roller cover is provided with an apron for two spindles, the present invention can be similarly applied to a clearer device in which an apron for four to eight spindles is provided.

A window hole 2a is formed on the top surface of the roller cover 2 for each apron or across each apron, and the window hole 2a is a window for taking out scraps of a clearer comb 6, which will be described later.

Further, an angle hanging plate is provided on the inside of the roller cover 2 so as to sandwich the window hole 2a, and a guide notch for the apron 3 is provided on the lower side, and a beam plate 2b is placed on the lower end side thereof passing through the inside of the apron 3. The beam plate 2b has both ends 2a,
2d (one not shown) is attached to the side wall of the roller cover 2.

Further, the front and rear edges of the beam plate 2b are formed with protruding curved surfaces as guide portions for the apron 3.

Reference numeral 2c denotes an apron presser provided as necessary, and is formed on the lower surface side of the beam plate 2b as a single piece through which each single-spindle apron can lid or all the aprons of one staff are accommodated.

Depending on the configuration of the draft roller group, a plurality of rows of the pressers 2c may be provided so that the apron 3 is properly contacted by each top roller.

The combs 6 are provided oppositely for each apron, and the comb bar 6
The comb bar 6a attached to the apron 3 scrapes off fiber debris and the like that have accumulated on the apron 3 by reciprocating the comb bar 6a.

Further, the operating rod 7 of the comb bar 6a is supported by passing through a window hole provided in the angle hanging plate, and its rear end side is pivotally supported by a drive device to be described later.

In a clearer device configured in this way, the clearer roller 4 is generally configured as an active drive roller, and the apron 3
In order to maintain friction with the clearer roller 4, the surface of the clearer roller 4 is coated with elastic rubber or formed with ridges, protrusions, etc.

The essential part of the present invention is that the apron 3 is intermittently rotated with a simple structure, and the comb 6 is also operated, and the main part of the present invention is such a simple structure.

The drive device will be explained below.

In carrying out the present invention, a shaft 8 is provided at the rear lower part of the draft roller group 1, and the shaft 8 is mounted on a roller stand or frame with a bracket for bearings.
It is arranged for rotation in one direction from a back roller pinion or other suitable drive of the drafter section.

Next, the clearer roller shaft 4a is provided with an intermittent rotation mechanism to actively drive the clearer roller shaft 4a in one direction, which will be described later.Here, an example will be shown in which a ratchet gear mechanism is used as the intermittent rotation mechanism. .

That is, a ratchet gear 13 is fixed approximately at the center of the clearer roller shaft 4a, and a swing frame 10 formed to surround the gear 13 is pivotably supported on the clearer roller shaft 4a.

One side wall of the swing frame 10 forms an arm rod 10a with its front lower part extended, and a cam ball 11 is freely supported on the tip side of the arm rod 10a.

Further, arm rod portions 10b, 10 are provided at the rear lower part of both side walls of the swing frame.
b is formed to support the core shaft, and a pawl 14 and a locking pawl 15 are pivotally supported in correspondence with the ratchet gear 13.

Then, a cam disk 9 is attached to the shaft 8 and fixed in correspondence with the cam ball 11, and one end side of a tension spring 12 is locked approximately in the center of the core shaft.
The other end of the roller cover 2 is engaged with an engaging protrusion provided inside the rear part of the roller cover.

Therefore, the swinging rod 10 holds the cam ball 11 in pressure contact with the cam disk 9 by the tension spring 12, and the shaft 8
The cam disk 9 swings due to the rotation of the cam disk 9 as the cam disk 9 rotates.

That is, as shown in FIG. 7, when the cam disc 9 is in the 180-degree continuous rotation position, the swing frame 10 is tilted by about 30 degrees, and this swing causes the pawl 14 to hook and feed the ratchet gear 13, thereby moving the clearer roller 4. The apron 3 is rotated intermittently in the counterclockwise direction in the drawing.

Note that the locking pawl 15 is for preventing the clearer roller 4 from reversing, but it can be omitted.

Further, although the claw 14 is shown as a single claw, it may constitute a plurality of claws,
The design can be changed freely, such as by interposing a spring or the like to bias it toward the ratchet gear 13.

Although not shown, the clearer roller 4 and the clearer roller shaft 4a are loosely supported, a one-way clutch bearing is disposed between them, and the intermittent drive of the clearer roller shaft 4a is again transmitted to the clearer roller 4 via the one-way clutch. You can configure it as you like.

The rear end of the operating rod 7 of the comb is pivotally supported on the upper part of the swing frame 10 via a pivot shaft.

In the clearer apron drive device configured in this way, the cam ball 11 that comes into contact with the cam disk 9 is pressed by the restoring force of the tension spring 12, and one end of this tension spring 12 is locked to the rear part of the roller cover. Therefore, when the roller cover 2 is pressed in the clearer operating position shown in FIGS. 2 to 4 and is swung away, the relative position of the core shaft approaches the roller cover side, so the biasing force of the tension spring 12 is almost negligible. Somehow, the swing frame 10 is held by the contact between the operating rod 7 and the hanging plate.

When the apron 3 and the roller cover 2 are placed in the operating position as shown, the cam ball 11 is pressed against the cam disk 9.

The cam disk 9 rotates the swinging frame 1 for each revolution of the shaft 8.
0 is shown in which it swings back and forth once, but it may also be configured to swing back and forth twice as a double cam disc 9a as shown in FIG.

Since the drive device of the endless clearer of the present invention is configured in this way, the apron can be driven with a simple structure, and the apron drive device does not get in the way at all when retracting the roller cover. Therefore, the operation can be performed smoothly.

Furthermore, since it can be easily configured, there are few failures and maintenance management is extremely easy.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway plan view of a clearer device to which the present invention is applied, Fig. 2 is a lower side side view of Fig. 1, and Fig. 3 is a cross-sectional view in the direction of the arrow along the cutting line ■-■ in Fig. 1. , FIG. 4 is a cross-sectional view taken along section line IV-IV in FIG. 1 in the direction of the arrow, FIG. 5 is a partially enlarged plan view of FIG. 1, and FIG. 6 is a section taken along section line ■-■ in FIG.
A sectional view along the direction of the arrow, FIG. 7 is an explanatory diagram of the operation of FIG. 6,
FIG. 8 is a schematic diagram showing another configuration example. 1 Nidraft roller group, 2: Roller cover, 3: Apron, 4: Clearer roller, 5: Free roller, 6: Comb, 7: Operating rod, 8: Shaft, 9: Cam disc, 10:
Swing frame, 11: Cam ball, 12: Tension spring, 13:
Ratchet gear, 14: pawl, 15: locking pawl.

Claims (1)

[Claim for Utility Model Registration] A rotary drive device for a plurality of rows of endless clearers installed opposite to a group of draft rollers, the endless clearer being an actively driven clearer roller freely supported on the rear side within a roller cover. In the clarifier device, the clarifier is installed in a suspended state between a free roller and a free roller that is freely supported on the front side, and a comb is arranged on the upper surface side of the clarifier. The clearer roller shaft is configured to be positively driven in one direction by providing a rotation mechanism, and the swing frame is connected to a cam disc attached to a shaft disposed at the rear lower part of the draft roller group and a lower side of the swing frame. An arm rod is formed at the tip of the arm rod, and a cam ball freely supported at the tip thereof is placed opposite to the arm rod, and an arm rod portion that locks the end of the tension spring is formed at the rear of the swinging frame so that the cam hole comes into contact with the cam disc. 2. A drive device for an endless clearer, characterized in that the other end of the spring is supported behind a roller cover, and the operating rod of the comb is pivotally supported at the top of a swing frame.