JP2583701Y2 - Spindle roller stand slide positioning mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a structure of a roller stand for supporting a bottom roller group of a draft device attached to a spinning frame or a roving frame, and in particular, to each bottom roller on the roller stand. The present invention relates to a slide positioning mechanism that supports the slide through a bearing.

[Conventional technology]

A slide 1 in a conventional spinning machine or the like has a semi-cylindrical bearing surface 1a having an open upper surface, as shown in FIGS. 3 (a) and 3 (b). It is configured to carry. The slide 1 is fitted into a fitting rib 5 provided on the upper surface of the slide mounting portion of the roller stand 3 and is installed in the arrangement order of the front, middle and back bottom rollers, and can be moved back and forth along the mounting portion. It is. In the figure, only two slides are shown.

The interval between the bottom rollers can be set to a predetermined value according to the spinning conditions. To fix this position, a bolt 4 is inserted from below through a long hole 3a vertically penetrating the roller stand mounting portion, and its tip is screwed and fastened to a screw hole 1b opened on the lower surface of the slide 1. This is done by:

As another method, as shown in FIGS. 4 (a) and 4 (b), a flange 6 is horizontally projected laterally from a lower region of the slide 1 to form a hole 6a therein. The stand has a nut 8 inserted in a dovetail groove 7 provided along its mounting surface, and after mounting the slide 1, inserts the tip of the bolt 4 into the groove 7 from above through the hole 6a.
The nut 8 is screwed and fixed. In this case,
One of the slides 1 'is formed in a special shape as shown in order to make the adjacent slides as close as possible to avoid the bolt 4.

[Problems to be solved by the invention]

In these conventional examples, in the former case, the bolt 4
When attaching or detaching the roller stand, a lower space corresponding to the entire length of the roller stand 3 is required, so that a large space S is inevitably generated in an intermediate region below the slide mounting portion of the roller stand 3. This results in a decrease in the strength of the roller stand itself, which is a significant drawback, especially in the case where an aluminum alloy is used instead of iron in order to improve workability and reduce weight as a recent trend.

Also, in the latter case, the flange 6 needs to be made relatively thin due to its configuration, which also causes a problem in strength. Further, in order to move the left slide 1 in FIG. 4, it is necessary to first loosen the bolts 4 'of the right slide 1' to position the desired slide 1, resulting in a disadvantage that a large number of man-hours are required for the work. there were.

The present invention solves such a problem of the prior art, and does not reduce the mechanical strength of the apparatus, and can easily perform the positioning operation. The positioning of the slide supporting the bottom roller in the drafting device of the spinning machine can be easily performed. The purpose is to provide a mechanism.

[Means for solving the problem]

The purpose of this is to, in a roller stand of a drafting device of a spinning machine, implant a bolt vertically under a bearing surface of a slide directly supporting each bottom roller in a non-rotatable state,
The screw portion at the tip is exposed below the slide by a predetermined length, and at the time of mounting, the tip of this bolt is inserted into a long hole along the longitudinal direction provided in the slide mounting portion of the roller stand, This is achieved by a slide positioning mechanism characterized in that the slide is positioned by screwing and fastening a nut to a screw portion at the tip of a bolt protruding from the lower surface side of the mounting portion.

[Action]

To mount the slide on the roller stand, insert the tip of a bolt previously implanted in the slide into the long hole of the slide mounting portion of the roller stand, and move the slide to a desired position along the roller stand. After
Screw the nut onto the thread at the tip of the bolt that projects downward.
To conclude. When changing the roller gauge, the nut may be loosened, the slide may be moved, and the nut may be fastened again.

According to the present invention, since the fixing bolt is implanted below the bearing surface of the slide, it is not necessary to provide a bolt mounting portion such as a thin flange portion on the side of the slide, and therefore, the slide body is not required. The complexity of the outer shape and the reduction in strength can be avoided.

In addition, since the fixing bolt is implanted so as not to rotate with respect to the slide, the work of fixing the slide is simply performed by
All that is required is to rotate and screw and fasten only the nut to the threaded portion of the bolt tip, so that a small amount of the nut equivalent to the thickness of the nut is provided below the tip of the bolt protruding from the lower surface of the slide mounting portion of the roller stand. If the space is free, the nut can be attached and detached, and the strength of the roller stand does not decrease.

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

〔Example〕

1 (a) and 1 (b) are a side view and a cross-sectional view of a first embodiment of a positioning mechanism of a support slide for a bottom roller according to the present invention.

A long hole 3a is formed in the slide mounting portion 3b of the roller stand 3, and a fitting rib 5 is provided on the upper surface thereof.

On the other hand, the slide 1 is provided with a counterbore 10 having a hexagonal cross section capable of receiving the head 4a of the bolt 4 on its bearing surface 1a. A vertical hole 11 having a diameter smaller than that of the vertical hole 11 continues.

In order to fix the slide 1 to the mounting portion 3b of the roller stand 3, a counterbore portion 10 of the slide 1 and a vertical hole
Insert the bolt 4 from above into 11 and fit it into this,
The tip of the bolt 4 protruding from the lower surface of the slide 1 is inserted into a long hole 3a provided in the mounting portion 3b of the roller stand 3.
Then, the position of the slide 1 is adjusted along the long hole 3a, and the slide 1 is positioned at a desired position. In this state, when the nut 8 is screwed into the tip of the bolt 4 projecting downward from the mounting portion 3b and tightened, the position of the slide 1 is fixed. At this time, the head of the bolt 4 forming a hexagon has the same hexagonal counterbore.
Since the nut 10 is fitted, the rotation of the bolt 4 is suppressed, and the nut 8 can be tightened.

The gap d between the tip of the bolt 4 and the mounting portion 3b of the roller stand facing the bolt only needs to be long enough to allow the nut 8 to be attached and detached, as shown in FIG. It is much smaller than the conventional positioning mechanism, and is effective in maintaining the strength of the roller stand.

2 (a) and 2 (b) show a side view and a sectional view of a second embodiment of the present invention. The difference from the first embodiment described above is that the bolt 4 is completely cast and integrated into the counterbore portion 10 and the vertical hole 11 following it when the slide 1 is cast. However, its function is the same as that of the first embodiment.

[Effect of the invention]

As described above, according to the present invention, the fixing bolt is implanted under the bearing surface of the slide and in a non-rotatable state, and is held in a state where the tip protrudes from the lower surface of the slide. Because the slide has no bolt mounting part such as a thin flange part, the slide itself has a compact shape and sufficient strength is guaranteed. Since there is no mechanism, the slide mounting structure can be simplified, and the slide can be fixed simply by screwing a nut to the tip of a non-rotating bolt, which is easy to handle and has a strong mounting strength at the bolt base end. It increases and the durability also increases. The slide is attached and detached by operating the nut at the tip of the bolt protruding downward from the roller stand.If the distance between the tip of the bolt and the surface of the roller stand facing it is equal to the thickness of the nut, The nut can be removed, and there is no need for a large space for removing the bolt itself as in the related art.

BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 (a) and 1 (b) are a side view and a cross-sectional view of a roller stand showing a first embodiment of the present invention, and FIGS. FIG. 3 is a side view and a sectional view showing an example of a conventional slide positioning mechanism, and FIG. 4 is a side view and a sectional view showing another example of the same. DESCRIPTION OF SYMBOLS 1 ... Slide 1a ... Bearing surface 2 ... Bottom roller 3 ... Roller stand 3a ... Slot 3b ... Mounting part 4 ... Bolt 4a ... Bolt head 5 ... Rib 7 ... Groove 8 ... … Nut 10 …… Counterbore part 11 …… Vertical hole

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-60-196014 (JP, U) JP-A 16-7391 (JP, Y1) JP-A 40-14580 (JP, Y1) JP-A 37- 8443 (JP, Y1)

Claims (2)

(57) [Scope of request for utility model registration] In a roller stand of a drafting device of a spinning machine, a bolt is vertically implanted in a non-rotatable state below a bearing surface of a slide directly supporting each bottom roller, and a screw portion at a tip thereof has a predetermined length. The bolt is exposed only below the slide. At the time of mounting, the tip of this bolt is inserted into a long hole along the longitudinal direction provided in the slide mounting part of the roller stand, and the bolt tip protruding from the lower surface side of the mounting part A slide positioning mechanism characterized in that the slide is positioned by screwing and fastening a nut to the screw portion of the slide. 2. The slide positioning mechanism according to claim 1, wherein said bolt is cast integrally with the slide.