JPS5842460Y2 - Bottom apron guide device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a guide device for a bottom apron used in a drafting device of a ring spinning frame, a roving frame, etc. It is designed to slide smoothly and be easily handled.

Conventionally, an apron drafting device has been used in the drafting section of a spinning machine as described above, a double apron drafting device with an apron on the top and bottom, or a single apron drafting device with an apron only on the bottom side. ing.

Furthermore, in the latter type of single apron drafting device, a long apron type in which the circumference of the apron is formed relatively long is often used.

By the way, the bottom apron installed in these drafting devices, regardless of whether it is a double apron or a single apron drafting device, cannot hold the fibers being drawn unless an appropriate tension is maintained, so they have been used in various types of drafting devices. Tension retention means and devices have been proposed and put into practice.

Furthermore, since these bottom apron devices are installed at the bottom of the drafting section, handling and operation during operation must be done from the bottom of the drafting section, and since it is a narrow section, sufficient visual inspection is required. I can't do it and often do it by hand.

Therefore, the tension guide device for the bottom apron is required to have a simple mechanism, be easy to handle, and be held securely.

The present invention was arrived at as a result of intensive study to satisfy these demands.The structure consists of integrally molding the support member that suspends the bottom apron from a synthetic resin material, and the support member is attached to the lower part of the tens bar. A groove that fits on the side and an apron guide portion of the protruding portion are formed by sandwiching the groove, and the protruding portion is guided in sliding and its position is regulated by guide pins and engagement pins provided on the tensile bar. The apron guide part is provided with an apron guide projecting wall, and an elastic spring material is interposed between the lower end surface of the tension bar and the groove to form a groove that urges the support member toward the tension side of the apron. This is what I did.

The present invention will be explained in detail below based on the drawings, but the drawings show one example of the concrete implementation of the present invention, and the present invention is not limited to these embodiments, but is consistent with the spirit of the descriptions described above and below. The same method can be implemented by changing the shape of the component parts or changing the design.

Fig. 1 is a side cross-sectional view of the present invention applied to a double apron drafting device for a ring spinning machine, and Fig. 2 is a side sectional view of one staff member showing the tensioning device 7 in Fig. 1 from the direction of the arrow. A front view of the tens bar, with the right half shown without the apron.

3 is an enlarged view of a part of the right end of FIG. 2, and FIG. 4 is a rear view of FIG. 3, partially cut away.

Fig. 5 is a bottom view of Fig. 4, Fig. 6 is an explanatory diagram showing an example of arrangement of elastic spring materials, Fig. 7 is an exploded sketch showing the structure and attachment of the support member, and Fig. 8 is Fig. 7. FIG. 3 is a sketch showing the opposite side of the support member shown in FIG.

In these figures, the tension bar 8 is installed between the front roller group 1, 1' and the second roller group 2, 2', and the bottom apron 4 is installed between its outer periphery and the second bottom roller 2 (sawchie roller). is placed in tension.

Further, the tens bar 8 generally has its upper end edge bent toward the second roller to form an apron guide portion 8a.

The guide member 8a may be formed with a protruding curved surface, or
Alternatively, a suitable elongated member may be provided to temporarily guide the bottom apron 4 higher.

The figure shows an example of an elongated member 9 made of a steel plate that is resiliently held around the guide portion 8a.
Although the elongated member 9 is shown as being inserted from the side of the tensile bar 8, it can be any suitable member as described above.

On the other hand, on the upper side of such a bottom apron device, a suitable draft roller or apron device is arranged to form a drafting section. are the cradle 6, the tensor 6a provided thereon, and the second top roller 2' (
This figure shows the arrangement of a top apron device that is configured to be wrapped around a cradle roller.

The Bottom apron guide device of the present invention provided on the Ten Server 8 is configured to hold the Bot Tom Apron 4 under tension and guide the running of the apron. is provided so as to bias it toward the tension side.

That is, the support member 10 is integrally molded from a synthetic resin material such as nylon or polyacetal that exhibits smooth friction with metal surfaces, and its shape is similar to that of the lower part of the tensile bar 8, as shown in FIGS. 7 and 8. A groove 15a is formed in which the groove 15a can be fitted and freely slid, and a protruding portion 15 and an apron guide portion 16 are formed on both sides of the groove 15a, respectively.

The protruding portion 15 is formed longer than the apron guide portion 16 and is shaped so as to follow the back side (second roller side) of the tensile bar 8, and is formed with a thin wall on the tip side to elastically open the groove 15a. It is recommended to form the

Further, a slot 17 is formed on the distal end side of the approximately central portion of the protruding portion 15, and the slot 17 engages with an engagement pin 14 implanted on the back side of the tensile bar 8.

Note that although the drawing shows a case in which the width of the protruding portion 15 is narrower than the width of the apron guide portion 16, they can be similarly implemented by making them the same width or conversely making them wider.

The protruding portion 15 is then slid along between the guide pins 13.13 implanted on the back side of the tensile bar 8.

On the other hand, an apron guide portion 16 opposite to the protruding portion 15
is a large-diameter curved guide portion 16 that communicates with the surface of the protruding portion 15.
There is an apron 4 on both sides of the front side forming b.
guide walls 16a, 16a are formed.

The curved guide portion 16b can be formed with a suitable curve, and if necessary, a steel plate cover 11 as shown in the figure can be fitted onto the curved guide portion 16b.

That is, the steel plate cover 11 is formed of a curved surface forming part 11a that is elastically fitted to the curved surface guide 16b, and a bent part 11b that is engaged with the tip side of the guide part 16, and is formed of a curved surface forming part 11a that is elastically fitted to the curved surface guide 16b and a bent part 11b that is engaged with the tip side of the guide part 16. It can be pushed into place.

Note that the recess 18 formed on the back surface of the protruding portion 15 is a finger rest that facilitates handling of the support member 10.
If necessary, it can be formed into other shapes or with protrusions.

When attaching the support member 10 configured in this way to the tensile bar 8, the bottom side of the groove 15a of the support member,
A resilient spring material 12 is interposed between the tension bar and the tip surface.

As the resilient spring member 12, a member having an appropriate shape can be used, but it is preferable that the resilient spring member 12 is a member that biases the right and left sides of the support member 10 to protrude with equal pressure. It may be a spring 12b with one loop and two legs, a spring 12 with one loop and two legs as shown in FIG. 4, or a meandering spring 12a as shown in FIG. can.

Furthermore, when arranging these resilient springs 12, it is necessary to provide them so that they can be stably held in position.

In order to satisfy these requirements, as shown in FIGS. 4, 6, and 8, a recess 8b for arranging an elastic spring is formed on the tip surface of the tensile bar 8, and the recess 8b has the shape of an elastic spring. can be changed freely by

Then, insert the slot 17 formed in the protruding portion 15 into the engaging pin 14.
When engaging with the supporting member 10, the distal end of the protruding portion 15 is pulled up to cross over the engaging pin 14 and engaged, and these are engaged or disengaged by elastic deformation of the resin material forming the supporting member 10. I can do it.

Since the Bottom apron guiding device of the present invention is constructed in this manner, (1) the construction is extremely simple and easy to handle and manage.

(2) The bottom apron can be reliably guided under tension and smoothly transferred.

(3) It can be provided at extremely low cost.

You can enjoy benefits such as:

[Brief explanation of drawings]

Fig. 1 is a side sectional view showing an example of a drafting device using the present invention, and Fig. 2 is a front view of the tens bar, the right half of which is shown with the apron removed. FIG. 3 is a partially enlarged view of FIG. 2, FIG. 4 is a back view of FIG. 3, FIG. 5 is a bottom view of FIG. FIG. 7 is an explanatory developed view showing the structure and assembly, and FIG. 8 is a sketch showing a part opposite to FIG. 7. 7... tension device, 8... tension bar, 9... hill forming member, 10... support member, 11... steel plate covering 12... Spring material, 13... Guide pin, 14...
Engagement pin, 15...Protruding portion, 16...
・Guide part, 17...Slot hole, 18...
recess.

Claims (1)

[Scope of utility model registration request] This is a bottom apron guide device installed in a bottom server of an apron drafting device, in which a support member for suspending the apron is connected to an open groove that fits into the lower side of the tens bar, and a tens bar that is sandwiched between the grooves. A protruding part formed along the back side and an apron guide part on the front side of the tens bar, which is shorter than the protruding part and has guide walls protruding on both sides, are integrally formed with a synthetic resin material, and the protruding part is , its both sides are fitted with a guide pin provided on the tensor bar, and its center portion is fitted with a slotted engagement pin placed in the middle of the guide pin, so as to guide and regulate the position of the support member. A resilient spring material is interposed between the groove of the support member and the lower end surface of the tensile bar to constantly bias the apron toward the tension side, and the apron guide portion of the support member has a smooth surface. A bottom apron guide device characterized in that it is constructed by being covered with a flat steel bullet plate.