JPH0444630Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] A scratch clearer attached to a draft device of a spinning machine, especially a roving frame or a ring spinning machine, is traversed and driven by a simple drive device. The device can also rotate the top clearer device to improve the cleaning effect and simplify handling.

[Prior Art] A top clearer device and an under clearer device are installed together with a draft roller group constituting a draft device of a spinning machine. The top clearer device is provided opposite to the top roller group and the top apron device, and the under clearer device is provided corresponding to the bottom roller group and bottom apron device, and these devices try to adhere to the rollers or apron, respectively. It is designed to peel off fibers and actively remove attached fiber waste and dust. On the other hand, an under clearer device is a part-type clearer device in which an elastic sheet material such as leather or synthetic rubber is curved or formed into a cylindrical shape, and one side of the sheet material is brought into surface contact with the bottom roller or bottom apron surface. is well known, and a scratch clearer that removes accumulated peeled fibers and dust by traversing this patch type clearer in a direction perpendicular to the bottom roller group is also well known. equipment is being used.

[Problems to be solved by the invention] However, the drive device of the conventional scratcher clearer is designed exclusively for the scratcher clearer, and the means is supported by a drive shaft and a fulcrum shaft. The structure is complicated, and problems have been pointed out in terms of handling and management.

On the other hand, the draft device of a roving frame uses a top clearer that rotates an endless clearer apron and abuts it against a group of top rollers. A cam is fixed to a drive shaft provided parallel to the draft roller, and the clearer apron is rotationally driven via an operating lever connected to the cam lever by utilizing the swinging of a cam lever mounted on the cam. However, in order to apply a scratch clearer to the draft device of such a roving frame, a dedicated drive device for the scratch clearer as described above must be installed on the roller stand or roller beam, and the mechanism is complicated. It becomes not only complicated but also difficult to handle.

Therefore, the present invention is configured so that the clearer apron of the conventional top clearer can be rotationally driven by one driving means, and the scratcher clearer can also be driven at the same time.
In addition, it is constructed so that it can be used as a driving means for either the top clearer or the scratcher clearer depending on the need.In particular, the cam lever has been improved to provide a swinging fulcrum for the top clearer. The scratch clearer is driven in the same way as before, and the scratch clearer can also be moved in parallel.

[Means for Solving the Problems] That is, in the present invention, a cam is fixed to a drive shaft provided parallel to the bottom roller group, a swing lever is freely supported on the outer periphery of the cam, and the upper part of the swing lever is connected to the bottom roller group. It is moored to a rocking shaft installed in parallel to serve as a swinging fulcrum, and the support shaft provided on the swing lever is engaged with the open vertical slit at the bottom of the arm bracket attached to the scratcher clearer. The structure is such that the scratch clearer is driven by rocking.

[Operations and Examples] 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 the illustrated example. The same implementation is possible even if a part of the shape or a part of the structure is changed according to the purpose. Further, the present invention can be similarly applied to draft devices of other spinning machines. FIG. 1 (partially omitted side view) shows a draft device of a roving frame to which the present invention is applied, and the top roller loading device is omitted. FIG. 2 (front view) is an enlarged view of a part of FIG. 1 in the direction of arrow A, particularly showing the front support means of the scratcher clearer, and FIG. 3 (plan view) is an enlarged view of a part of FIG. This is an enlarged view with the top clearer device and top roller group removed, and particularly shows the structure of the scratcher clearer. In these figures, the draft device of the roving frame to which the present invention is applied is composed of a front bottom roller 1, a second bottom roller 2, a saw teeth roller 3, and a back roller 4, as shown in FIG. A bottom apron 5 is wrapped around the roller 3 via a tensile server to form a bottom roller group, and a front top roller 1a, a second top roller 2a, and a top apron roller 3a are provided above the bottom roller group, respectively. , and back-to-back roller 4
A is provided oppositely to the top apron roller 3a, and a top apron roller 5a is connected to the top apron roller 3a via a tensor (not shown).
are strung together to form the top roller group.
The top roller group is loaded individually or in groups, and two weights on both sides are supported at the tip side of a load arm attached to a waiting arm (not shown). Further, this waiting arm has its pivot portion moored to a locking shaft 15 provided at the rear of the bottom roller group. And these bottom roller groups are roller stand 1.
0 via a bearing member. The top clearer device 7 applied to the draft device configured as described above has a single spindle clearer apron 6 hung inside a roller cover which is pivotably supported at intervals between roller stands 10 and 10 so as to be openable and closable. The apron 6 is moved in the direction of the arrow by intermittent driving of the clearer roller 7a, and is brought into contact with the top roller group by means of a guide member, a pressing spring plate, etc. provided within the apron. The clearer roller 7a is rotated in a ratchet manner by the swinging of a lever loosely supported on the shaft of the clearer roller 7a, and the swinging of the lever is caused by the axial movement of the oscillating lever 7b. It is being carried out.

On the other hand, the scratcher clearer 8 is integrally constructed and disposed between the roller stands 10 and 10 as shown in FIG. The clearer material 9 is installed inside a letter-shaped crosspiece frame 9a, inserts a presser frame 9b inside the clearer material 9, and inserts fasteners 9e on both ends thereof to sandwich the crosspiece frame 9a and presser frame 9b. These clearers have support frames 9d, each having a U-shaped cross section, on both sides thereof via mounting frames 9c, respectively.
It is installed astride one side of 9d. Also support frame 9
d and 9d are connected to each other by a connecting bar 9f on the rear side to form a solid and integral frame. On the other hand, such a scratch clearer 8
In this support device, a pulley 11 is loosely supported on a support shaft 11a attached to the rear side of a roller stand 10 to receive and support the rear side of the support frames 9d, 9d of the scratcher clearer. 9d,9
The front side of d is supported by a support device of which only one side is shown in FIG. That is, in this front side support device, an engaging shaft 14 which is constantly biased to protrude toward the roller stand side through a spring 14b is provided through the lower part of a bracket 13 which is placed astride the support frame 9d.
4 is provided with a knob 14c on the opposite side, and the protrusion bias is restricted. And this protruding engagement shaft 14
is supported by the sliding surface 12a of the support bracket 12 attached to the front side of the roller stand 10,
The engagement shaft 14 slides on this sliding surface 12a by the traverse of the scratch clearer 8, which will be described later. The installation of this support bracket 12 is as follows:
As shown in FIG.
The roller stand side is located in the center of b (towards the left in the figure).
Screw the push screw protruding into the support bracket 1.
2 is tightened and fixed in a specific position. Twist the knob 14c to the right side in FIG.
By pulling against this, the engaging shaft 14 can be removed from the sliding surface 12a, and the entire clearer can be taken out.

On the other hand, although the driving device of the present invention is shown as being installed in a scratch clearer constructed as described above, it can also be used as a traverse driving means for an under clearer device having other constructions. That is, the first
As shown in the figure, a cam 17 is fixed to a rotary drive shaft 16 which is freely supported on the rear side of the roller stand 10 via a bracket 16a, and a swing lever 18 is freely supported on this cam 17. As shown in FIG. 4 (partially enlarged view of FIG. 1), the swing lever 18 is formed long on the upper side and has branch rods 18a and 18.
b to form a vertically long slit 18c, and the slit 18c is engaged with the locking shaft 15 provided on the roller stand. The figure shows a case in which a flanged collar 15a molded from a synthetic resin material is inserted into the locking shaft 15 side in advance for this engagement. It can be omitted when provided on the side or when the swing lever 18 is molded from a synthetic resin material. A shaft through hole 18d is provided below the slit 18c of the swing lever 18, and this shaft through hole 18d pivotally supports the rotationally driving oscillator rod 7b of the top clearer device 7, as shown in FIG. However, if necessary, the shaft through hole 18d may be formed at the tip of an arm portion of the swing lever 18.

On the other hand, a boss portion 18e as shown in FIG. 5 (bottom view in FIG. 4) is formed on the lower front side (left side in the figure) of the swing lever 18, and collars are provided on both sides of the boss portion 18e. The support shaft 18g is supported through the support shaft. The boss portion 18e may be a one-piece boss portion without a collar. On the other hand, a bracket 19 is attached to the center of the lower surface of the connecting frame 9a constituting the scratch clearer 8, and this bracket 19 is bent into a U-shape and has long legs 19b with longer legs on the front side and short legs on the rear side on both side walls. leg 19b
A vertically long slit 19c is formed in the support shaft 18, and this vertically long slit 19c is provided in the boss
engages g. The figure shows collars 18f, 18f having the same purpose as those provided on the locking shaft 15 fitted to the support shaft 18g for this engagement, but as described above, other structural means may be used instead. You can. Also, the vertical slit 19c is connected to the long leg 19a.
The structure formed by the short leg 19b makes it easy to attach and detach the scratch clearer 8, and in particular, when attaching the short leg 19b side, the support shaft 18g is formed by sliding the short leg 19b.
This is convenient because it allows the long leg 19a to be connected to the support shaft 18g on the side of the long leg 19a, thereby regulating the mounting depth position.

In the drive device for the scratcher clearer constructed in this way, when the cam 17 is eccentrically positioned on the lower side as shown in FIG.
The clearer material 9 is brought into contact with the bottom roller group by the protruding engagement shaft 14, and the support shaft 18g of the swing lever 18 is positioned below the vertically long slit 19c of the bracket 19. When the cam 17 rotates 90 degrees clockwise as shown in FIG. 6 (operation diagram), the swing lever 18 tilts using the contact point of the locking shaft 15 as a swinging fulcrum, and the support shaft 18g is displaced forward. Due to this displacement, the support shaft 18g slides inside the slit 19c and rises, moving the bracket 19 forward, moving the entire scratcher clearer, and changing the contact surface between the clearer material 9 and the bottom roller group. Remove the peeled deposits. Next, as shown in FIG. 7 (operation diagram), when the cam 17 further rotates 90 degrees and the eccentric position rises, the support shaft 18g again slides inside the slit 19c and is located at the upper side, and the bracket 1
Move 9 back to its original position. Further rotation of the cam 17 in turn causes the bracket 19 to retreat from its original position, and the clearer material 9 moves in the opposite direction to that shown in FIG. 6 to repeat the traverse.
That is, the support shaft 18g of the swing lever 18 is displaced in the front-back direction while moving up and down, and the up-and-down movement is canceled by the vertical slit 19c, so that only the back and forth movement is transmitted as the traverse of the scratcher clearer.
On the other hand, the shaft hole 18d of the swing lever 18 moves up and down, and this up and down moves the oscillator rod 7b shown in FIG.
The top clear rear apron 6 is rotated by swinging the drive lever a.

[Effects of the Invention] Since the drive device for the scratcher clearer of the present invention is constructed as described above, it is possible to reliably traverse with a simple construction, and the scratcher clearer can be easily attached and detached. Furthermore, it is easy to maintain and manage, and can be used for a long period of time, and can also be used as an oscillating device for a top clearer device.

[Brief description of the drawings]

Fig. 1 is a partially omitted side view showing an example of a draft device to which the present invention is applied, and Fig. 2 is an arrow A in Fig. 1.
3 is a plan view showing the bottom roller group and the scratcher clearer, FIG. 4 is a partially enlarged view of FIG. 1, FIG. 5 is a bottom view of FIG. 4, and FIG. 7 and 7 are operational diagrams of FIG. 4. 1...Front bottom roller, 2...Second bottom roller, 3...Saw chisel roller, 4
... Back bottom roller, 5 ... Bottom apron, 6 ... Top apron, 7 ... Top clearer device, 8 ... Scratcher clearer,
9...Clearer material, 10...Roller stand,
11... Pulley, 12... Support bracket, 13...
... Bracket, 14 ... Engagement shaft, 15 ... Locking shaft, 16 ... Drive shaft, 17 ... Cam,
18...Swing lever, 19...Bracket.

Claims (1)

[Scope of utility model registration request] A drive device that traverses a scratch clearer disposed below a bottom roller group in a direction perpendicular to the bottom roller group and in parallel with each other,
A cam is fixed to a drive shaft provided parallel to the bottom roller group, and a swing lever is freely supported around the outer periphery of the cam, and the upper part of the swing lever is moored to a rocking shaft provided parallel to the bottom roller group to swing. A supporting shaft provided on the swing lever is engaged with a vertical slit open at the bottom of an arm bracket attached to a part of the scratcher clearer, and the scratcher clearer is moved by swinging the swing lever. A drive device for a scratcher clearer, characterized in that it is configured to drive a scratcher.