JPH0426459Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is capable of regulating the running position of the thread, changing the running direction of the thread, guiding the running thread to a predetermined position, The present invention relates to a yarn guide for textile machines that is attached to various textile machines for purposes such as separating a plurality of yarns to restrict contact between the yarns and defining the ballooning shape of yarns swirling around a bobbin.

[Prior Art] Conventionally, this type of thread guide has been integrally molded from metal or ceramic material.

In addition, as a conventional technology, for example, design registration
There is a publication number 654727.

[Problems to be solved by the invention] In the case of a thread guide that is entirely molded in one piece, there are problems such as the shape of the mold for molding the thread guide being complicated and the cost of the mold increasing. The dimensions and shape of the thread section are selected according to the purpose of use, and it is necessary to manufacture molds for molding thread guides with different specifications for each purpose. Since the thread guide is formed using a mold that combines multiple split molds, burrs and burrs are formed on the surface of the thread guide, which has a minute size, at positions corresponding to the seams of the split molds. Manual finishing work is required to remove the linear protrusions and polish the surface of the thread guide, resulting in problems such as the extremely complicated finishing work of the thread guide.

The present invention aims to solve the above problems.

[Means for Solving the Problems] The yarn path for a textile machine of the present invention includes a pair of side walls arranged in parallel across an introduction groove whose wall surface is approximately U-shaped in front, and side walls on both sides thereof. The thread guide body has a bottom wall portion connected to the lower end of the thread guide body, and the thread guide body has a retaining piece having a base portion attached to one of the side wall portions and a hook portion installed across the introduction groove. The tip of the hook part is assembled with a gap inserted into the relief hole formed in the other side wall part and communicating with the introduction groove, and the lower part of the introduction groove is fitted with a hole on the wall surface of the introduction groove. A thread guide portion is formed in the shape of a round hole and surrounded by both tangent surfaces that are formed near the lower end and on the lower surface of the retaining piece and have a continuous substantially circular front shape, and the upper surface of the hook portion The hook portion has a configuration in which a guiding surface is formed that slopes diagonally downward toward the tip of the hook portion.

(Function) The thread is assembled into a thread guide body having an introduction groove whose wall surface has a substantially U-shaped front face, and the base portion is attached to one side wall of the thread guide body, and the tip end is attached to the thread guide body. When the retaining piece loosely inserted into the escape hole formed in the other side wall of the path main body is brought into sliding contact with the guide surface on the upper surface of the hook portion and pulled down, the thread is guided diagonally downward and the hook portion is pulled down. , and is further formed near the lower end of the wall surface of the introducing groove and near the center of the lower surface of the retaining piece, and has a continuous substantially circular frontal shape. The thread is inserted into the thread guiding portion surrounded by the surface, and the thread is prevented from coming off upward by the retaining piece.

[Effects of the invention] Since the present invention is configured as described above, it is possible to simplify the shape of the thread guide body and reduce the cost of the mold for forming the thread guide body, and it is also possible to reduce the cost of the mold for forming the thread guide body, and also When the thread guide body is formed using a mold, sharp burrs and linear protrusions formed by the joints of the split molds are removed from the inner wall surface of the introduction groove of the thread guide body, the hole edge of the escape hole, etc. , many parts can be removed by mechanical polishing that polishes them at the same time, which simplifies the polishing work of the thread guide body, increases the productivity of the thread guide body and the thread guide, and reduces manufacturing costs. It has the effect of reducing

In addition, since the thread guide body and the retaining piece are separate pieces, the shape and dimensions of the thread guide part of the introduction groove are different.
Thread guides of various standards can be manufactured by assembling a common retaining piece with a unified shape and dimensions to thread guide bodies with different specifications. This has the effect of simplifying the process and reducing the manufacturing cost of the thread guide.

Furthermore, by simply pulling down the thread introduced onto the hook part of the retaining piece, the thread can be automatically inserted into the thread guiding part with one touch, simplifying the operation of inserting the thread into the thread guiding part. In addition, since the thread inserted into the thread guiding section is surrounded by both continuous tangent surfaces in an approximately circular shape, it is possible to accurately prevent the thread from coming off outside the thread guiding section, and to prevent the thread from slipping out of the thread guiding section. The yarn can be guided stably.

[Example] Next, a first example of the present invention will be described with reference to FIGS. 1 to 4.

In a yarn path G installed in a textile machine, a yarn path main body 1 made of ceramic material has a pair of left and right side walls 1a arranged in parallel across an introduction groove 2 whose wall surface is approximately U-shaped in front. , 1b, and a bottom wall portion 1c connected to the lower ends of both side wall portions 1a and 1b.
It has a substantially U-shaped front view.

At the left and right upper ends of the wall surface of the introduction groove 2, introduction surfaces 3, 3 are respectively formed which are curved in an arc shape and inclined downwardly inward in order to guide the yarn into the introduction groove 2. A welding surface 4 is formed near the lower end of the wall surface of the groove 2 and has a circular front shape with the upper end cut off.

Ribs 5, 5 are formed on the front and rear edges of the outer surface of the yarn guide body 1, respectively, to protrude in parallel across both side walls 1a, 1b and the bottom 1c. A connector fitting groove 6 having a U-shaped cross section is formed in order to fit a groove edge of a connector having a U-shaped groove, a wire connector curved into a U shape, or the like.

In one side wall portion 1a of the thread guide body 1, a mounting hole 7, which has a vertically elongated rectangular cross section and communicates the introduction groove 2 and the connector fitting groove 6, penetrates in a stepped manner along the left-right direction. On the other hand, the other side wall portion 1b of the thread guide main body 1 is provided with an escape hole 8 whose longitudinal section is formed in a vertically elongated rectangular shape and which communicates the introduction groove 2 and the connector fitting groove 6.
is provided opposite to and through the mounting hole 7.

A retaining piece 9 made of ceramic or metal and formed into a flat plate having a substantially constant thickness is attached to the thread guide body 1 in order to prevent the yarn inserted into the introduction groove 2 of the thread guide body 1 from slipping out. This retaining piece 9 has a base 9a formed to be tightly fitted into the attachment hole 7 of the thread guide body 1, a thickness slightly smaller than the hole width of the escape hole 8, and an introduction hole. A hook portion 9b having a length larger than the groove width of the groove 2 is connected to the hook portion 9b, and the upper surface of the hook portion 9b has a direction in which the outer thread introduced onto the retaining piece 9 is directed toward the tip 12 of the hook portion 9b. A guiding surface 10 is formed which is curved in an arc over an approximately 90° range and tilts downward toward the tip 12 in order to guide the hook obliquely downward. A welding surface 11 curved in an arc shape is formed, and a thread guiding surface 13 having a continuous circular front shape is formed by the welding surfaces 4 and 11. The thread guide portion 2a surrounded by the welding surfaces 4 and 11 is formed in the shape of a round hole.

The retaining piece 9 is inserted into the mounting hole 7 from the side, its base 9a is fitted into the mounting hole 7 and locked, and the hook portion 9b is installed across the thread guiding groove 2 to lock the hook. The distal end 12 of the section 9b is assembled into the main body section 1 in a state in which it is loosely inserted into the escape hole 8 with a gap 8a for passing the thread therebetween. However, the base portion 9a of the retaining piece 9 is fixed to the side wall portion 1a of the thread guide body 1 with an adhesive or the like, if necessary.

When the yarn is introduced into the upper end of the introduction groove 2 and pulled down, the yarn slides into guide surface 10 of the retaining piece 9 and moves downward while being guided toward the tip 12 of the hook portion 9b. tip 12 and escape hole 8
It passes through the gap 8a with the thread guide part 2 while bending
The yarn inserted into the yarn guiding portion 2a can be run while being prevented from coming off by the hook portion 9b.

Next, the operation and effects of the embodiment having the above configuration will be explained.

In this example, a pair of side walls 1 are arranged in parallel across an introduction groove 2 whose wall surface has a substantially U-shaped front shape.
a, 1b and a bottom wall 1c connected to the lower ends of both side walls 1a, 1b. The retaining piece 9, which has a hook portion 9b installed in the same direction, is inserted into the escape hole 8, which is formed in the other side wall portion 1b and communicates with the introduction groove 2, with a gap 8a in between. At the bottom of the introduction groove 2, both welding surfaces 4 are formed in the vicinity of the lower end of the wall surface of the introduction groove 2 and on the lower surface of the retaining piece 9, and the frontal shape is continuous and approximately circular. , 11 is formed in the shape of a round hole, and a guide surface 10 is formed on the upper surface of the hook portion 9b so as to be inclined diagonally downward toward the tip 12 of the hook portion 9b. be.

Therefore, the shape of the thread guide main body 1 can be simplified and the cost of the mold for forming the thread guide main body 1 can be reduced. A machine that simultaneously polishes a large number of parts to remove sharp burrs and linear protrusions formed by joints of split molds on the inner wall surface of the introduction groove 2 of the thread guide body 1, the hole edge of the relief hole 8, etc. Since it can be removed by thorough polishing, the polishing work of the thread guide main body 1 can be simplified and the thread guide main body 1 and the thread guide G can be removed.
This has the effect of increasing productivity and reducing manufacturing costs.

In addition, since the thread guide G is divided into the thread guide main body 1 and the retaining piece 9, and the thread guide main body 1 and the retaining member 9 are separate bodies, the shape and dimensions of the thread guiding portion 2a of the introduction groove 2 are It is possible to manufacture thread guides G of each standard by assembling a common retaining piece 9 with a unified shape and dimensions to thread guide bodies 1 having different specifications.
By making the retaining piece 9 common, the production of the thread guide G is simplified, and the production cost of the thread guide G can be reduced.

Furthermore, since the thread guide main body 1 and the retaining piece 9 are separate pieces, when the thread guide G is used for guiding a running yarn without coming into contact with the retaining piece 9, the retaining piece 9 can be made from an inexpensive metal material such as stainless steel, and the cost of the thread guide G can be reduced.
Further, when used for guiding a yarn traveling stably on the yarn path G, the retaining piece 9 can be removed and the yarn can be guided only by the yarn path main body 1.

Next, a second embodiment of the present invention shown in FIGS. 5 to 8 will be described. In this embodiment, an upper part of one side wall part 1aA of the thread guide main body 1A in which the introduction groove 2A is recessed is opened upward. A mounting recess 14 is recessed therein, and a step 15 is formed inside near the lower end of the side wall surface 1aA.

On the other hand, a locking part 16 with an increased thickness is formed protruding from the upper outer end of the base 9aA of the retaining piece 9A assembled to the thread guide body 1A, and a locking part 16 with increased thickness is formed on the lower surface of the hook part 9bA of the retaining piece 9A. A welding surface 11A is recessed and has a semicircular shape with the lower part cut out in front, and a welding face 4A is formed near the lower end of the wall surface of the introduction groove 2A and has a semicircular front shape with the upper cut out. Therefore, a thread guiding surface 13A having a continuous circular front shape is formed, and both thread welding surfaces 4A, 1 are provided at the lower part of the introducing groove 2A.
A thread guide portion 2aA surrounded by 1A is formed in a round hole shape.

The retaining piece 9A is inserted into the introduction groove 2A and the mounting recess 14 from diagonally above the side wall surface 1aA, and the locking portion 16 is engaged with the mounting recess 14 so that the tip 12A of the retaining piece 9A is inserted into the relief hole 8A. It is assembled to the thread guide main body 1A in a loosely inserted state with a gap 8aA in between.

The functions and effects of the second embodiment are explained in the first embodiment.
Since this is the same as the embodiment, the explanation thereof will be omitted.

[Brief explanation of the drawing]

1 to 4 show the first embodiment of the present invention, in which FIG. 1 is an enlarged front view of the thread path, FIG. 2 is an enlarged plan view, and FIG. 4 is a sectional view taken along line X2-X2 of FIG. 1, FIGS. 5 to 8 show a second embodiment of the present invention, and FIG. 5 is an enlarged front view of the thread path. , Fig. 6 is a partially cutaway enlarged plan view, and Fig. 7 is taken from X3-X in Fig. 6.
A 3-line sectional view and FIG. 8 are enlarged exploded perspective views of the thread path. 1, 1A... Thread guide body, 2, 2A... Introductory groove,
2a, 2aA... thread guiding part, 8, 8A... escape hole,
9, 9A...Removal prevention piece, 9a, 9aA...Base,
9b, 9bA...Hook part, 12, 12A...Tip, G...Thread guide.

Claims (1)

[Scope of utility model registration request] The thread guide main body has a pair of side walls arranged side by side across an introduction groove whose wall surface is approximately U-shaped in front, and a bottom wall connected to the lower ends of both side walls. a base attached to the side wall of;
A retaining piece having a hook portion installed across the introduction groove, the tip of the hook portion being placed in a relief hole formed in the other side wall portion and communicating with the introduction groove with a gap therebetween. Assemble with loose insertion,
At the lower part of the introduction groove, there is a thread guiding portion surrounded by both welding surfaces that are formed near the lower end of the wall surface of the introduction groove and on the lower surface of the retaining piece, and have continuous, approximately circular frontal shapes. A thread path for a textile machine, characterized in that the hook portion is formed into a round hole shape, and a guide surface is formed on the upper surface of the hook portion, the guide surface being inclined diagonally downward toward the tip of the hook portion.