EP0979792A2

EP0979792A2 - Belt type traverse apparatus

Info

Publication number: EP0979792A2
Application number: EP99108268A
Authority: EP
Inventors: Tatsuo Murata Kikai Koutariryo C-610 Jinyama
Original assignee: Murata Machinery Ltd
Current assignee: Murata Machinery Ltd
Priority date: 1998-08-05
Filing date: 1999-04-27
Publication date: 2000-02-16
Also published as: JP3282589B2; JP2000053320A; EP0979792A3

Abstract

The present invention relates to a belt type traverse apparatus for transferring a yarn between traverse guides 10c, 11c that are attached to endless belts 10, 11 that are arranged in the vertical direction and travel in opposite direction. A rotary transferring member 13 is disposed near the respective ends of the endless belts to abut the yarn in synchronism with the traverse guide on the yarn receiving side in order to move the yarn in the direction in which it is removed from the traverse guide on the yarn delivering side thereby preventing a yarn traversing motion from being interrupted on a fixed transferring guide as in the prior art. This configuration enables quick traverse turns to improve the winding shape of packages.

Description

Field of the Invention

The present invention relates to a belt type traverse apparatus that allows traverse guides attached to endless belts traveling in opposite directions to alternately engage with a yarn in order to traverse it.

Background of the Invention

Referencing Figures 12 and 13, a belt type traverse apparatus will be described that is disclosed in Japanese Unexamined Patent Application Publication (Tokkai-Hei) No. 8-91699 according the applicant's previous application and that allows traverse guides attached to endless belts traveling in opposite directions to alternately engage with a yarn in order to traverse it.
P is a package that is rotated by an appropriate driving means such as a spindle or a drum to wind a yarn around itself, and endless belts 1 and 2 arranged in the vertical direction and traveling in opposite directions are disposed close to the package P. Traverse guides 1a and 2a that appear approximately U-shaped in a top view are respectively attached to the endless belts 1 and 2, and are adapted to engage with a yarn y to traverse the yarn y when they are located in front of the endless belts 1 and 2. In addition, the traverse guide 1a attached to the upper endless belt 1 and the traverse guide 2a attached to the lower endless belt 2 are configured to cross each other only at both ends of the endless belts 1 and 2, in order to transfer the yarn y between the two traverse guides 1a and 2a.
3 is horizontal plate-like fixed transferring member that is respectively disposed near the ends of the endless belts 1 and 2 and that are located under the traverse guides 1a and 2a crossing each other at both ends of the endless belts 1 and 2. An inclining surface 3a that inclines in such a way as to be tapered forward in the direction of the endless belts 1 and 2 is formed at that edge of the fixed transferring member 3 which is located further from the endless belts 1 and 2.
The traverse guides 1a and 2a are formed to appear approximately U-shaped in a top view, and to have two protruding portions 1c and 1d, 2c and 2d across a recessed portions 1b and 2b with which the yarn y is engaged. The protruding portions 1c and 2c located in front relative to the traveling direction of the traverse guides 1a and 2a are configured to be shorter than the protruding portions 1d and 2d located behind relative to the traveling direction of the traverse guides 1a and 2a. 4 are pulleys around which the endless belts 1 and 2 are extended.
Next, with reference to Figure 13, a step of transferring the yarn y being traversed leftward while engaging with the traverse guide 2a of the lower endless belt 2 traveling leftward, to the traverse guide 1a of the upper endless belt 1 traveling leftward will be described.
Figure 13A shows a state in which the yarn y engaging with the traverse guide 2a of the lower endless belt 2 traveling leftward is being moved toward the fixed transferring member 3 disposed near the ends of the endless belts 1 and 2. The traverse guide 1a of the upper endless belt 1 traveling leftward is located immediately behind the traverse guide 2a of the lower endless belt 2.
Figure 13B shows a state in which the yarn y engaging with the traverse guide 2a is abutting the tip of the inclining surface 3a of the fixed transferring member 3, and the traverse guide 1a is located immediately above the traverse guide 2a.
Figure 13C shows a state in which the traverse guide 2a traversing the yarn y is located immediately before the end position of the endless belt 2, and in this position, the inclining surface 3a of the fixed transferring member 3 removes the yarn y from the short protruding 2c located in front relative to the traveling direction of the traverse guide 2a, whereas the yarn y is not removed from the long protruding portion 2d located behind relative to the traveling direction of the traverse guide 2a. Accordingly, the yarn y remains engaged with the traverse guide 2a and is traversed by it.
Figure 13D shows a state in which both the traverse guides 2a and 1a are located at the ends of the endless belts 1 and 2, that is, the traverse guides 2a and 1a overlap each other. In this position, the inclining surface 3a of the fixed transferring member 3 virtually removes the yarn y from the long protruding portion 2d located behind relative to the traveling direction of the traverse guide 2a.
Figure 13E shows a state in which, removed by the inclining surface 3a of the fixed transferring member 3 from the long protruding portion 2d of the traverse guide 2a immediately after the traveling direction is switched from left to right, the yarn y transfers the end of the endless belt 1, is subsequently caught on the long protruding portion 1d of the traverse guide 1a immediately after the traveling direction is switched from left to right, and then enters the recessed portion 1b of the traverse guide 1a.
Figure 13F shows a state in which after the yarn y has been transferred from the traverse guide 2a to the traverse guide 1a as described above, the yarn y engaging with the traverse guide 1a is being traversed rightward toward the other end of the endless belt 1. The traverse guide 2a, with which the yarn y is not engaged, moves upward and then travels rightward toward the other end of the endless belt 1 along its upper part.
Subsequently, the traverse guide 1a transfers the yarn y to the traverse guide 2a at the other ends of the endless belts 1 and 2, as described above. Thus, the transfer of the yarn y from the traverse guide 2a to the traverse guide 1a and vice versa is sequentially repeated at both ends of the endless belts 1 and 2 such that a traversing movement occurs.
As described above, to transfer the yarn y between the upper traverse guide 1a and the lower traverse guide 2a at both ends of the endless belts 1 and 2, the yarn y engaging with one of the traverse guides 1a and 2a abuts the fixed transferring member 3 fixedly disposed near the respective ends of endless belts 1 and 2 and is removed from the recessed portion 1b or 2b in the traverse guide 1a or 2a. Errors, however, may occur in removing the yarn y from one of the traverse guides 1a and 2a.
In addition, if the tension of the yarn y decreases during the yarn's transfer between the upper traverse guide 1a and the lower traverse guide 2a, an inertial force caused by the feeding force of the traverse guides 1a and 2a, which traverse the yarn y, may cause the yarn y to overrun along the inclining surface 3a of the fixed transferring member 3, resulting in an error in the yarn's transfer. For example, in Figure 13C, if the tension of the yarn y engaging with the traverse guide 2a of the endless belt 2 decreases for any reason, an inertial force associated with the movement of the traveling traverse guide 2a, with which the yarn y engages, may cause the yarn y to overrun along the inclining surface 3a of the fixed transferring member 3, resulting in a failure to transfer the yarn y to the traverse guide 1a of the endless belt 1.
Furthermore, the yarn y may be sandwiched between the traverse guide 1a or 2a traversing the yarn y while engaging with it and the inclining surface 3a of the fixed transferring matter 3. For example, as shown in Figure 13C, the yarn y is moved upward while engaging with the long protruding portion 2d of the traverse guide 2a of the endless belt 2. Since, however, the yarn y is located in a V-shaped gap "v" formed of the long protruding portion 2d of the traverse guide 2a and the inclining surface 3a of the fixed transferring member 3, it may be sandwiched between the long protruding portion 2d of the traverse guide 2a and the fixed transferring member 3.
It is an object of the present invention to solve these problems of the belt type traverse apparatus and to provide a belt type traverse apparatus that can transfer higher traverse speeds.

Summary of the Invention

To achieve this object, in a belt type traverse apparatus for transferring a yarn between traverse guides that are attached to endless belts arranged in the vertical direction and that travel in opposite directions, the present invention first disposes a rotary transferring member near the respective ends of the endless belts to abut the yarn in synchronism with the traverse guide on the yarn receiving side, in order to move the yarn in the direction in which it is removed from the traverse guide on the yarn delivering side. Second, an overrun-restricting area located outside the tip of the traverse guide is provided in the rotary transferring member. Third, the traverse guide is configured so as to be approximately L-shaped.

Brief Description of Drawing

Figure 1 is a perspective view of a belt type traverse apparatus according to the present invention.
Figure 2 is an enlarged top view of the feature of the belt type traverse apparatus according to the present invention.
Figure 3 is a top view of a rotary transferring member used for the belt type traverse apparatus according to the present invention.
Figure 4 is also an enlarged top view of the feature of the belt type traverse apparatus according to the present invention that is similar to Figure 2 and that describes a yarn transferring step in this apparatus.
Figure 5 is also an enlarged top view of the feature of the belt type traverse apparatus according to the present invention that is similar to Figure 2 and that describes the yarn transferring step in this apparatus.
Figure 6 is also an enlarged top view of the feature of the belt type traverse apparatus according to the present invention that is similar to Figure 2 and that describes the yarn transferring step in this apparatus.
Figure 7 is an enlarged top view of the feature of the belt type traverse apparatus according to the present invention that is similar to Figure 2 and that describes the operation of this apparatus during a yarn splicing operation.
Figure 8 is also an enlarged top view of the feature of the belt type traverse apparatus according to the present invention that is similar to Figure 2 and that describes the operation of this apparatus during the yarn splicing operation.
Figure 9 is also an enlarged top view of the feature of the belt type traverse apparatus according to the present invention that is similar to Figure 2 and that describes the operation of this apparatus during the yarn splicing operation.
Figure 10 is a schematic front view showing another embodiment of the belt type traverse apparatus according to the present invention.
Figure 11 is a schematic top view of the another embodiment shown in Figure 10.
Figure 12 is a perspective view of a conventional belt type traverse apparatus.
Figure 13 is an enlarged top view of the feature of the conventional belt type traverse apparatus describing a yarn transferring step.

Detailed Description of the Preferred Embodiments

An embodiment of the present invention will be described below, but the present invention is not limited to this embodiment, and other embodiments possessing the same spirit are included.
First, by way of example, the entire configuration of a belt type traverse apparatus according to the present invention will be described with reference to Figure 1.
10 and 11 are endless belts such as timing belts disposed in the vertical direction and traveling in opposite directions. This embodiment shows an example in which the upper endless belt 10 rotates counterclockwise while the lower endless belt 11 rotates clockwise.
The upper endless belt 10 is extended between pulleys 10a and 10b each having vertical shafts 10d and 10e, and the lower endless belt 11 is extended between pulleys 11a and 11b also having vertical shafts. The endless belts 10 and 11 are formed to have the same shape and travel in opposite directions, but at the same speed. In addition, the endless belts 10 and 11 are disposed in the vertical direction and at identical positions in a top view.
The single traverse guide 10c is attached to the upper endless belt 10, while the single traverse guide 11c is attached to the lower endless belt 11. The traverse guides 10c and 11c of the upper and lower endless belts 10 and 11 are adapted to engage the yarn y when located in front of the traverse apparatus (i.e., the direction closer to the reader in Figure 1) and to traverse the yarn y. In addition, when the upper traverse guide 10c traversing the yarn y is located at the center between the pulleys 10a and 10b, the traverse guide 11c of the lower endless belt 11 is located immediately behind this upper traverse guide 10c of the upper endless belt 10. Furthermore, the traverse guide 10c of the upper endless belt 10 and the traverse guide 11c of the lower endless belt 11 are adapted to cross each other only at both ends of the upper and lower endless belts 10 and 11.
12 is a horizontal plate-like fixed transferring member having the same configuration and operation as the fixed transferring member 3 described above and disposed near the respective ends of the endless belts 10 and 11. An inclining surface 12b inclining in such a way as to be tapered toward the reader in Figure 1 is formed at that edge 12a of the fixed transferring member 12 which is located on the further side from the endless belts 10 and 11.
The traverse guide 10c attached to the upper endless belt 10 and the traverse guide 11c attached to the lower endless belt 11 are formed to appear approximately L-shaped in a top view so that the yarn y engages a corners 10c' and 11c' of these approximately L- shaped traverse guides 10c and 11c.
Next, with reference to Figures 2 and 3, an approximately disc-shaped rotary transferring member 13 will be described that is attached to the lower end of a vertical shaft 10d of the pulley 10a around which the endless belt 10 is extended, the rotary transferring member 13 cooperating with the fixed transferring matter 12 in removing the yarn y from the traverse guide 10c, 11c. Since, however, the rotary transferring member 13 attached to a vertical shaft (not shown in the drawings) of the pulley 11b has the same configuration and thus the same rotational timing for the traverse guide 10c, the rotary transferring member 13 attached to the vertical shaft 10d located in the left of Figure 1 will be explained below. If flanges are attached to the pulleys 10a and 11b to restrain the vertical movements of the endless belts 10 and 11, the rotary transferring matter 13 can be substituted for the flange.
An outer periphery 13a of the rotary transferring member 13 is composed of an area 13b extending through an angle of about 90° and having a radius shorter than the distance between the yarn y guided in the corners 10c' and 11c' of the traverse guides 10c and 11c and the center of the pulley 10a so as not to contact the yarn y (hereafter, this area is referred to as a "non-contact area") , an area 13c extending through an angle of about 180° and having a radius gradually increasing from the end of the non-contact area 13b in the direction opposite to the rotational direction of the rotary transferring member 13 (i.e., counterclockwise), over a distance slightly shorter than the distance between the center of the pulley 10a and the tip of a protruding portion 10c'' of the traverse guide 10c (hereafter referred to as a "forward-rotating yarn-removing area"), an area 13d extending through an angle of about 90° and having a radius gradually increasing from the other end of the non-contact area 13b in the rotational direction of the rotary transferring member 13, over a distance between the center of the pulley 10a and a position beyond the tip of the protruding portion 10c'' of the traverse guide 10c (hereafter referred to as a " reverse-rotating yarn-removing area"), a recessed portion 13e formed between the forward-rotating yarn-removing area 13c and the reverse-rotating yarn-removing area 13d in such a way that its innermost portion extends to the neighborhood of the corner 10c' of the traverse guide 10c, and an overrun-restricting area 13f constituting the side periphery of the recessed portion 13e on the reverse-rotating yarn-removing area 13d side.
As described above, the rotary transferring member 13 is attached to the vertical shaft 10d or the pulley 10a, and is adapted to rotate with the pulley 10a, and when the traverse guide 10c approaches the pulley 10a and rotates around the pulley 10a, the recessed portion 13e of the rotary transferring member 13 and the traverse guide 10c are located close to one another and move in synchronism.
Next, a step of transferring the yarn y engaging with and traversed by the traverse guide 11c of the lower endless belt 11 located in front and traveling leftward, to the traverse guide 10c of the upper endless belt 10 located behind and traveling leftward will be described with reference to Figure 2 and Figures 4 to 6.
Figure 2 shows a state in which the yarn y is being traversed toward the pulley 10a while engaging with the corner 11c' of the traverse guide 11c of the lower endless belt 11 located in front (the lower part of Figure 2) and traveling leftward. The traverse guide 10c of the upper endless belt 10 located behind (the upper part of Figure 2) and traveling leftward is located immediately behind the traverse guide 11c of the endless belt 11 and close to the recessed portion 13e of the rotary transferring member 13, and is moving at the same speed as the rotary transferring member 13 and in synchronism with it.
Figure 4 shows a state in which the traverse guide 11c of the lower endless belt 11 with which the yarn y is engaged and the traverse guide 10c of the upper endless belt 10 have further rotated from the state shown in Figure 2, in a direction in which they further approach each other. In Figure 4, the operation of removing the yarn y from the traverse guide 11c is started after the yarn y engaging with the traverse guide 11c of the lower endless belt 11 has run onto the forward-rotating yarn-removing area 13c of the rotary transferring member 13 rotating counterclockwise to move the yarn y toward the tip of the protruding portion 11c'' of the traverse guide 11c.
Figure 5 shows a state in which the traverse guide 11c of the lower endless belt 11 with which the yarn y is engaged and the traverse guide 10c of the upper endless belt 10 have further rotated from the state shown in Figure 4, in a direction in which they further approach each other. In Figure 5, the yarn y is about to slip out from the traverse guide 11c of the lower endless belt 11 because the yarn y engaging with the traverse guide 11c of the lower endless belt 11 has run onto a larger radius part of the forward-rotating yarn-removing area 13c of the rotary transferring member 13 rotating counterclockwise to further move toward the tip of the protruding portion 11c'' of the traverse guide 11c.
Figure 6 shows a state in which the traverse guide 11c of the lower endless belt 11 with which the yarn y is engaged and the traverse guide 10c of the upper endless belt 10 further approach each other from the state shown in Figure 5 and overlap each other. In Figure 6, the yarn y has run onto the inclining surface 12b of the fixed transferring member 12 to slip out from the traverse guide 11c of the lower endless belt 11 and is located in the recessed portion 13e of the rotary transferring member 13, and the protruding portion 10c'' of the traverse guide 10c of the upper endless belt 10 approaches the yarn y which slipped out from the traverse guide 11c of the lower endless belt 11 and is sitting on the inclining surface 12b of the fixed transferring member 12. Then, when the traverse guide 11c of the lower endless belt 11 and the traverse guide 10c of the upper endless belt 10 move in the direction in which they are mutually separated, the yarn y sitting on the inclining surface 12b of the fixed transferring member 12 engages with the protruding portion 10c'' of the traverse guide 10c of the upper endless belt 10 to allow the traverse guide 10c of the upper endless belt 10 to start traversing rightward.
As described above, when the yarn y is transferred between the traverse guide 11c of the lower endless belt 11 and the traverse guide 10c of the upper endless belt 10, the forward-rotating yarn-removing area 13c of the rotary transferring member 13 executes almost the entire step of removing the yarn y from the traverse guide 10c, 11c, while the fixed transferring member 12 carries out only the last part of the step of removing the yarn y from the traverse guide 10c, 11c. This configuration can prevent the yarn y from being sandwiched by the protruding portions 10c'' and 11c'' of the traverse guides 10c and 11c and the fixed transferring member 12, as in the conventional belt type traverse apparatus.
In addition, as shown in Figure 6, immediately before the traverse guide 11c of the lower endless belt 11 transfers the yarn y to the traverse guide 10c of the upper endless belt 10, although the yarn y has run onto the fixed transferring member 12, an inertial force that causes movement in the same direction as the movement of the lower endless belt 11 is applied to the yarn y traversed by the traverse guide 11c of the lower endless belt 11. Then, if the tension of the yarn y decreases or the traverse speed is high, this inertial force may cause the yarn y to overrun onto the fixed transferring member 12, resulting in a failure to transfer the yarn y to the traverse guide 10c of the upper endless belt 10, as in the conventional belt type traverse apparatus. According to this embodiment, however, immediately before the traverse guide 11c of the lower endless belt 11 transfers the yarn y to the traverse guide 10c of the upper endless belt 10, the yarn y that is moved by the inertial force abuts the overrun-restricting area 13f of the rotary transferring matter 13 having an outer periphery outside the tip of the protruding portions 10c'' and 11c'' of the traverse guides 10c and 11c, in order to prevent overrun and ensuring the transfer of the yarn y between the traverse guide 11c of the lower endless belt 11 and the traverse guide 10c of the upper endless belt 10.
In addition, if a yarn cut accidentally occurs, the yarn y slips out from the traverse guides 10c and 11c and is located approximately at the centers of the endless belts 10 and 11. In addition, when the yarn y is subsequently spliced after the yarn cut, a driving mechanism of the traverse apparatus is reversed in relation to the splicing operation. The step of engaging the yarn with the traverse guide during the reversing step will be described below with reference to Figures 7 to 9.
When the driving mechanism of traverse apparatus is reversed in relation to the splicing operation as described above, the pulley 10a rotates clockwise, namely, in the direction opposite to that during the regular yarn y traverse step, while the traverse guide 10c of the endless belt 10 located in front of the traverse apparatus (lower part of Figure 7) travels leftward in Figure 7. The yarn y located approximately at the center of the endless belt 10 engages with a rear portion (that edge of the protruding portion 10c'' which is opposed to the corner 10c'' of the traverse guide 10c is called the "rear portion") 10f of the protruding portion 10c'' of the traverse guide 10c moving toward the pulley 10a, and moves toward the pulley 10a. As the pulley 10a rotates clockwise, the rotary transferring matter 13 also rotates clockwise.
When the traverse guide 10c of the endless belt 10 approaches the rotating rotary transferring member 13, the yarn y being moved leftward while engaging with the rear portion 10f of the protruding portion 10c'' of the traverse guide 10c runs onto the reverse-rotating yarn-removing area 13d of the rotary transferring member 13, as shown in Figure 8.
When the traverse guide 10c further moves leftward from the state shown in Figure 8, the yarn y, engaging with the rear portion 10f of the protruding portion 10c'' of the traverse guide 10c, runs onto the larger radius part of the reverse-rotating yam-removing area 13d of the rotary transferring member 13 and then onto part of the reverse-rotating yarn-removing area 13d beyond the tip of the protruding portion 10c'' of the traverse guide 10c, and the yarn y then slips out from the traverse guide 10c and moves to the center of the endless belt 10 due to its tension. Subsequently, the splicing step is finished and the driving mechanism of the traverse apparatus is driven in the regular direction to rotate the pulley 10a in the regular counterclockwise direction, thereby moving the traverse guide 10c of the endless belt 10 rightward in Figure 9. The rightward movement of the traverse guide 10c of the endless belt 10 engages the yarn y with the corner 10c' of the traverse guide 10c to resume traversing.
As described above, due to the reverse-rotating yarn-removing area 13d formed in the rotary transferring member 13, the reversal of the driving mechanism of the traverse apparatus associated with the splicing operation ensures that the yarn y returns to the position at which it engages with the corner 10c' or 11c' of the traverse guide 10c or 11c. In addition, as described above, the approximate L-shape of the traverse guides 10c and 11c can eliminate the conventional disadvantage that the yarn y may be sandwiched between the protruding portion of the approximately U-shaped traverse guides 1a and 1b located behind relative to the moving direction of the traverse guides 1a and 1b and the overrun-restricting area 13f of the rotary transferring member 13.
Although the above embodiment attaches the one traverse guide 10c, 11c to each endless belt 10, 11, a plurality of traverse guides 10c, 11c can be attached to each endless belt 10, 11 and a plurality of fixed transferring members 12 can be disposed.
The embodiment shown in Figures 10 and 11 shows the present invention applied to Japanese Patent Application No. 8-175522 (Japanese Unexamined Patent Application Publication (Tokkai-Hei) No. 10-1258) which is the applicant's previous application, and according to the invention disclosed in the previous application, one of the pair of pulleys 10a and 10b across which the upper endless belt 10 is extended, for example, the right pulley 10b has a smaller diameter, as does one of the pair of pulleys 11a and 11b across which the lower endless belt 11 is extended, for example, the left pulley 11a, as shown in Figure 10.
According to this embodiment, of the pair of pulleys 10a and 10b across which the upper endless belt 10 is extended, the left larger diameter pulley 10a is loosely fitted so as to rotate on the left driving shaft 110, while of the pair of pulleys 11a and 11b across which the lower endless belt 11 is extended, the left smaller diameter pulley 11a is fixed to the left driving shaft 110. In addition, of the pair of pulleys 10a and 10b across which the upper endless belt 10 is extended, the right smaller diameter pulley 10b is fixed to the right driving shaft 111, while of the pair of pulleys 11a and 11b across which the lower endless belt 11 is extended, the right larger diameter pulley 11b is loosely fitted so as to rotate on the right driving shaft 111.
The embodiment shown in Figures 10 and 11 shows the rotary transferring members 13 fixed to the driving shafts 110 and 111 between the larger diameter pulley 10a and smaller diameter pulley 11a on the left side and between the smaller-diameter pulley 11a and larger diameter pulley 11b on the right side, respectively. According to this embodiment, the rotary transferring member 13 has formed therein the non-contact area 13b and the forward-rotating yarn-removing area 13c but the reverse-rotating yarn-removing area 13d, the recessed portion 13e and the overrun-restricting area 13f are not formed. This embodiment has steps L between the upper endless belt 10 and the lower endless belt 11 at both ends thereof. Thus, the steps L are provided at the yarn y transfer points at both ends for both the traverse guide 10c of the upper endless belt 10 and the traverse guide 11c of the lower endless belt 11, thereby ensuring the transfer of the yarn y despite the absence of the reverse-rotating yarn-removing area 13d and the overrun-restricting area 13f.
Due to the described configuration, the present invention has the following effects.
During the yarn transfer operation, the rotary transferring member rotating in synchronism with the traverse guide removes the yarn from the traverse guide with which the yarn is engaged, thereby preventing the yarn traversing motion from being interrupted on a fixed transferring guide as in the prior art. This configuration enables quick traverse turns to improve the winding shape of packages.
The overrun-restricting area provided in the rotary transferring member prevents overrun during the yarn transfer operation, thereby ensuring proper yarn transfer.
The approximate L-shape of the traverse guide can eliminate the disadvantage that the yarn may be sandwiched between the traverse guide and the overrun-restricting area of the rotary transferring member upon the reversal of the driving mechanism of the traverse apparatus associated with the splicing operation.

Claims

A belt type traverse apparatus for transferring a yarn between traverse guides that are attached to endless belts arranged in the vertical direction and that travel in opposite directions, characterized in that rotary transferring members are disposed near the respective ends of said endless belts to abut the yarn in synchronism with said traverse guide on the yarn receiving side in order to move the yarn in the direction in which it is removed from said traverse guide on the yarn delivering side.
A belt type traverse apparatus according to Claim 1 characterized in that an overrun-restricting area located outside the tip of the traverse guide is provided in the rotary transferring member.
A belt type traverse apparatus according to Claim 1 or Claim 2 characterized in that the traverse guide is approximately L-shaped.