JPH0369821B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a winding device for winding yarn onto a bobbin or the like in various textile machines such as spinning devices, yarn twisting devices, and winders.

[Conventional technology]

Yarn sent out from spinning equipment, false twisting equipment, etc.
The yarn is wound onto a bobbin or the like as a package, and at that time, the yarn is traversed over a predetermined width in the axial direction of the bobbin to form a yarn layer on the bobbin. However, during the above-mentioned winding, the phenomena of high ear height and ribbon winding may be observed. If the above-mentioned traverse width is always kept constant when winding up the package cage, the yarn layer at the turn-back position at the traverse end will become thicker.
A so-called ear height phenomenon occurs. Therefore, an operation called creeping or edge control is performed to prevent the yarn layer from protruding. As shown in Fig. 10, creeping reduces the amount of yarn wound around the end of the package and prevents selvage height by changing the position of the left and right traverse ends of the yarn periodically or aperiodically. are doing. The rate of decrease in the amount of yarn at both ends of the package P is determined by the ratio of the time t ₁ during which the yarn is moving with the maximum traverse width and the time t ₂ during which the yarn is moving with a width smaller than the maximum traverse width, and this ratio In other words, by appropriately setting t ₂ /(t ₁ +t ₂ ), a good package shape with no ear height can be obtained.

Ribbon winding occurs when threads overlap each other parallel and directly over a certain length on a package cage, and these overlapping thread sections become entangled with each other, making it difficult to unwind the threads. . As a means to avoid ribbon winding, the applicant has provided a guide groove A having two reciprocating paths A ₁ and A 2 on the outer periphery of the traverse drum 1, as shown in the developed view of the traverse drum ₁ in FIG. We have proposed a method in which a traverse guide for guiding the yarn runs along the guide groove A. Round trip
In A ₁ and A ₂ , the turning points at the left and right ends of the guide groove A are different from each other by a distance D in the direction of the drum axis. According to this, the yarn is traversed with two types of traverse widths, long and short. Therefore, compared to a package cage with a constant traverse width, the phenomenon of ribbon winding is reduced, and the phenomenon of selvage at the ends of the package cage is lowered. A new ear height phenomenon occurs, resulting in two small ear heights as shown in Figure 12.
E ₁ and E ₂ occur.

Therefore, in order to eliminate these small ear heights E ₁ and E ₂ , the traverse guide 1 having the two reciprocating paths A ₁ and A ₂ is used to further perform creeping, and the traverse is wound up as shown in FIG. 13. I went there. As a result, as shown in FIG. 14, the ear height _E1 on the outside of the package cage was prevented, but a new ear height _E3 was generated on the inside. This is thought to be due to the fact that the folding of the yarn during traversal in this part is stagnant and the number of yarn layers increases.

[Problem that the invention seeks to solve]

As mentioned above, when changing the traverse width using a plurality of reciprocating paths, the present invention prevents the occurrence of selvage height due to the concentration of folded portions of the yarn in some positions of the package cage even when creeping is performed. The purpose is to prevent

[Means for solving problems]

A synchro cam that rotates at a predetermined rotation ratio with respect to the rotation of the traversing drum has at least two stages of cam surfaces, a major axis and a minor axis, and has a cam surface that changes steplessly from the major axis to the minor axis. The creeping cam and the synchro cam supported both ends of a swing lever supported at the end of a swing arm, and the end of the swing arm was connected to a cam plate vibrating member of a traverse device.

In the traverse device, a guide arm having a thread guide and a slide piece is pivotally supported on a guide block that is supported by a guide member and has a cam shoe, and a cam shoe is placed in a guide groove of a traversing drum, and a slide piece is placed in a cam groove of a cam plate. This is a device that is slidably fitted and reciprocated by the rotation of the traversing drum.

[Effect]

The synchro cam rotates at a predetermined rotation ratio with respect to the rotation of the traversing drum, and the long diameter and single diameter act on the swinging lever alternately, while the creeping cam has a long diameter and a short diameter that change steplessly. The cam surface is reciprocally rotated to act on the swinging lever, and the swinging lever moves the position of the support shaft on the swinging arm that supports the swinging lever up and down by the action of the two cams, the synchronized cam and the creeping cam. It's moving. The swinging angle of the swinging arm changes depending on the up and down movement of this support shaft, and the swinging arm swings the swinging member of the traverse device connected via the interlocking arm, changing the traverse width of the thread guide. I'm letting you do it.

〔Example〕

Reference numeral 1 denotes a traversing drum which is housed in a cam box 2 together with a guide rod 3. Reference numeral 4 denotes a cam plate, which is swingably supported inside the lid 6 of the cam box by a shaft 5, and is provided with a cam groove 7 in the longitudinal direction.
is provided.

A traverse guide 10 is swingably supported on the guide rod 3. The traverse guide 10 is attached to a guide block 11 which is swingably fitted to the guide rod 3, and has two arms 13', 1 by means of a shaft 12.
A guide arm 13 having a diameter of 3" is rotatably supported, a thread guide 16 is attached to the arm 13', and a thread guide 16 is attached to the arm 13".
It has a slide piece 15 that is slidably fitted into the cam groove 7 of the cam plate 4, and a cam shoe 14 that is slidably engaged with the cam groove A of the traverse drum 1 on the lower surface of the guide block 11. . An arm 13' of the guide arm 13 projects out of the cam box from a window 9 in the front plate 8 provided between the cam box 2 and the lid 6. A rod 45 is connected to the cam plate 4 and is connected to a creeping mechanism which will be described later. 46 is cam plate 4
This is a spring that urges the holder to pivot clockwise in FIG. 2.

In the above traverse device, when the cam plate 4 is oscillated by the rod 45, the degree of oscillation of the arm 13' of the traverse guide 10, that is, the size of the traverse width of the thread guide 16, is determined by the amount of oscillation. The mechanism for operating the rod 45 will now be described.

The rod 45 is attached to a shaft 39 on one arm 35 of an L-shaped swinging arm 30 that is swingably supported on the shaft 31.
The L-shaped interlocking arm 38 is supported at one end thereof. The other end of the interlocking arm 38 is in contact with a cam disc 43 provided at the base of the cradle arm 40 via a cam roller 44 . The cam surface 43a of the cam disk 43 is the portion 4 near the cradle arm 40.
3b is further away from the center of the support shaft 41 of the cradle arm than the tip 43c, and as the cradle arm 40 rises as the diameter of the package P increases, it pushes out the cam roller 44 and pulls the rod 45 to the left in FIG. It works like this.

A swing lever 53 having cam rollers 33 and 34 at both ends is swingably provided on the other arm 32 of the swing arm 30 by a shaft 51, and a swing stop lever 53 is provided at a position facing the cam roller 34 to prevent swinging. It supports the cam roller 50 as a locking piece. The cam roller 33 and the cam roller 34 are provided so as to be in contact with the synchro cam 20 and the creeping cam 26, respectively. The synchronized cam 20 controls the rotation of the traversing drum 1 using a pulley 21 and an endless belt 2.
2. Rotation is transmitted via pulleys 24, 25 and an endless belt 23. creeping cam 26
The rotation of the pulse motor 27 is transmitted through the endless belt 28, and the rotation is reciprocated. A roller 52 is further supported on the support shaft 54 of the creeping cam 26 as a stopper, and the roller 52 can come into contact with or separate from the cam roller 50 of the swing arm 30.

In the above device, when the traversing drum 1 rotates m, the thread guide 16 reciprocates once and the synchro cam 20
shall rotate half a rotation.

Next, synchro cam 20 and creeping cam 26
The operation of the creeping device as it rotates will be explained.

First, the movement of the traverse guide 10 will be explained, and this traverse device is conventionally known. The reciprocating width of the thread guide 16 of the traverse guide 10 is determined by the movement of the connecting rod 45. That is, when the connecting rod 45 moves, the cam plate 4 swings about the shaft 5, and the inclination of the cam groove 7 changes. When the cam plate 4 swings counterclockwise around the shaft 5, the traverse guide 10 with the slide piece 15 slidingly fitted into the cam groove 7
When located at the left end of the guide rod 3, rotate its arm 13' clockwise around the shaft 12,
Similarly, when it is at the right end, it turns counterclockwise to reduce the traverse width, and when the cam plate 4 swings clockwise, the traverse guide 10 turns the guide arm 13 in the opposite direction to reduce the traverse width. To increase.

The movement of the connecting rod 45 is controlled by the synchro cam 2.
0, creeping cam 26, cradle arm 4
Although the movement is regulated by the movement of the cam disk 43 provided at 0, the movement of the cam disk 43 will be ignored and explained first.

The synchro cam 20 always rotates in a fixed direction, but the creeping cam 26 rotates in a reverse direction from the position shown in FIG. It performs a reciprocating rotation in which it rotates clockwise and then returns clockwise to its original position. While the creeping cam 26 rotates one way, the synchro cam 20
rotates in one direction multiple times. To describe the relationship between the rotation angle of the synchro cam 20 and the creeping cam 26 and the swing angle θ of the swing arm 30, the fourth
As shown in Figure a, the synchro cam 20 has a long diameter portion 20
When cam roller 33 and creeping cam 26 are in contact with cam roller 34, roller 52 and cam roller 50 are in a state of separation, and one arm 32 of swing arm 30 is in swing angle θ. is between the maximum and minimum.

As shown in FIG. 4b, when both the synchro cam 20 and the creeping cam 26 try to bring their short diameter parts into contact with the cam roller, the arm 32 of the swing arm 30 swings the most. Only in this case, the cam roller 50 of the arm 32 comes into contact with the roller 52 coaxial with the creeping cam, and the swinging of the arm 32 is appropriately stopped. However, the swing angle is maximum. Since the roller 52 is a perfect circle, the traverse width is constant only when the roller 52 and the cam roller 50 are in contact with each other, and a traverse indicated by the symbol a in FIG. 5 is obtained.

In the case shown in FIG.
3 and 34, the cam roller 50 is separated from the roller 52, the swing angle is the minimum, and a traverse indicated by the symbol b in FIG. 5 is obtained.

In the case shown in FIG. 4c, the large diameter portion of both the synchro cam 20 and the creeping cam 26 is the cam roller 3.
3 and 34, the cam roller 50 and roller 52 are separated, and the arm 32 of the swinging arm 30 has a minimum swing angle, resulting in a traverse indicated by the symbol c in FIG.

In the case shown in FIG. 4d, the small diameter portion of the synchro cam 20 is connected to the cam roller 33 and the creeping cam 26.
The large diameter portions of the rollers are in contact with the cam roller 34, and the cam roller 50 and the roller 52 are separated from each other. The swing angle is medium and a traverse indicated by the symbol d in FIG. 5 is obtained.

The swinging of the swinging arm 30 through the angle θ appears as a movement of the rod 45 via the interlocking arm 38, and when the rod 45 is moved to the right in Figure 1 (downward in Figure 2) (movement in this direction). is due to the tensile force of the spring 46), the traverse width becomes large, and in the opposite direction, it becomes small.

Furthermore, the rod 45 is also moved as the diameter of the package P increases. That is, when the diameter of the package P increases, it pivots counterclockwise in FIG. 1 about the support shaft 41, and thereby the cam disk 43 also pivots. Then, the cam roller 44 of the interlocking arm 38 moves from the small diameter cam surface 43a to the large diameter cam surface 43c of the cam disk 43, and the interlocking arm 38 turns counterclockwise around the shaft 39 to pull the rod 45. Therefore, the traverse width of the thread guide 16 gradually decreases as shown by the angle u in FIG.

In the above case, if the roller 52 and cam roller 50 are omitted as shown in FIG.
The traverse operation is as shown in FIG. 7, and as a result, the amount of yarn at both ends of the package is too small, resulting in rounded shoulders. 5 with the device shown in Figure 6.
In order to perform the traverse operation shown in the figure, it is sufficient to control the motor 27 so as to stop the rotation of the cam 26 only at the time corresponding to FIG. fixed lever 5
6 may also be used. If the cam 20 has a perfect circular shape, the conventional traverse operation as shown in FIG. 10 will be performed, and if the cam shape has three levels as shown in FIG. 9, the traverse width will change in three stages. become. Therefore, the cam 20 may include a plurality of different cams connected to a single shaft, and these cams may be switched as appropriate depending on the yarn type.

〔Effect of the invention〕

Since creeping is performed, the generation of selvedge height can be prevented, and since the traverse operation changes every reciprocation, ribbon winding can also be prevented.

[Brief explanation of drawings]

Figure 1 is a schematic side view of the creeping device, Figure 2 is a schematic side view of the creeping device;
The figure is a plan view of the traverse device, FIG. 3 is a longitudinal sectional view of the same, FIGS. Figures 6, 8, and 9 are schematic diagrams of other embodiments, and Figure 7 shows the traverse operation when the cam shown in Figure 6 is used. 10 is a diagram showing a conventional traverse operation, and FIG. 11 is an explanatory diagram of a drum in which the guide groove has two reciprocating paths.
Fig. 12 is a front view of the package when creeping is not performed using the drum shown in Fig. 11, and Fig. 13 is a diagram showing the thread traverse operation when creeping is performed using the drum shown in Fig. 11. , FIG. 14 is a front view of the same package. A... Guide groove, P... Package, 1... Traverse drum, 3... Guide member, 4... Cam plate, 7... Cam groove, 10... Traverse guide, 11... Guide block, 12, 31, 51... Shaft, 13... Guide arm, 14... Cam show, 15... Slide piece, 16... Thread guide, 20... Synchro cam, 26
...Creeping cam, 30...Swinging arm, 38...
Interlocking arm, 45... Rod, 50... Cam roller, 52
…roller.

Claims (1)

[Claims] 1. A guide arm having a thread guide and a slide piece is pivotally supported on a guide block which is supported by a guide member and has a cam shoe, and the cam shoe is slid into the guide groove of the traversing drum and into the cam groove of the cam plate. A traverse guide that slides and fits each piece and moves back and forth by the rotation of a traversing drum.
In the traverse device that changes the reciprocating width of the thread guide provided in the guide arm according to the swing angle of the cam plate, at least a long diameter portion and a short diameter portion rotate at a predetermined ratio to the number of rotations of the traversing drum. A synchro cam having a diameter portion and a creeping cam whose diameter changes steplessly from the long diameter portion to the single diameter portion are pivotally supported. The other end of the swinging arm, which has a swinging lever pivotally supported at one end, is connected to the swinging member of the cam plate, and the swinging motion of the swinging arm is transmitted to the cam plate via the swinging member. A traverse device for a yarn winding machine characterized by changing the traverse width of a guide. 2 A guide arm having a thread guide and a slide piece is pivotally supported on a guide block having a cam shoe supported by a guide member, and the cam shoe is slid in the guide groove of the traversing drum and the slide piece is slid in the cam groove of the cam plate. In a traverse device that changes the reciprocating width of a thread guide provided on the guide arm of a traverse guide that is fitted and reciprocated by the rotation of the traverse drum, the width of the reciprocating movement of the thread guide is changed according to the swing angle of the cam plate. A synchro cam that rotates at a predetermined ratio to the number of synchro cams and has at least a major diameter part and a minor diameter part, and a creeping cam whose diameter changes steplessly from the major diameter part to the minor diameter part. The other end of the swinging arm, which has a swinging lever pivotally supported at one end that contacts both the cams and swings, is connected to the swinging member of the cam plate, and On the arm, a locking piece for stopping the swinging is located between the support shaft of the swinging lever and the support shaft of the swinging arm, and a locking piece for stopping the swinging is located opposite to the locking piece for stopping the swinging, Provide a stopper,
A traverse device for a yarn winding machine, characterized in that the traverse width of a yarn guide is changed by transmitting the swing of a swing arm to a cam plate via the swing member. 3. The traverse device in a yarn winding machine according to claim 2, wherein the locking piece for stopping the swinging comprises a cam roller. 4. The traverse device in a yarn winding machine according to claim 2, wherein the stopper is a roller integrated with a creeping cam. 5. The traverse device in a yarn winding machine according to claim 2, wherein the stopper has a fixed plane.