JPS6335815A - Apparatus for preventing yarn breakage in reeling machine - Google Patents

Abstract

PURPOSE:To balance chain is attached in a specific state to a supporting member of an hourglass-shaped wheel moving upward according to the increase of tension of running yarn, the yarn tension is gradually increased while applying a looseness to the running yarn and the revolution of a winding small frame is stopped when the tension reaches its peak. CONSTITUTION:One end a balance chain 46 is fixed near an end of a supporting lever 34 and the other end of the chain is fixed to a stationary member 47. When a trouble in the running yarn occurs, a movable hourglass-shaped wheel 24 moves according to the increase of the tension of the running yarn Y and a looseness is applied to the running yarn while increasing the load to the movable hourglass wheel along the direction to pull down the wheel. The revolution of a winding small frame 26 is stopped when the movable hourglass wheel is transferred to contact a brake ring 45 with the outer fringe of the winding small frame 26.

Description

[Detailed description of the invention]

[Field of Industrial Application] The present invention provides a yarn handling method that stops the rotation of the winding frame when a yarn failure occurs due to the generation of knots in the traveling yarn being wound around the winding frame. The present invention relates to a yarn breakage prevention device that prevents running yarn from being cut when a winding frame is stopped in a winding machine.

[Conventional technology]

An example of a conventional yarn breakage prevention device for a yarn reeling machine is the one shown in FIG. The traveling yarn Y wound around the winding frame 1 is guided from the graining section to the fineness sensor 3 via a cord attacher, a cord collector (not shown) and a kennel 2. The fineness sensor 3 forms a slit between two pivoted parallel plates, runs the thread between the slits, and rotates the parallel plate depending on the amount of friction generated between the thread and the surface of the parallel plate. This is to know the fineness of the yarn. After that, the fixed drum wheel4. It is wound onto the small winding frame 1 via the movable drum wheel 5. A reciprocating drum 6 is provided between the kennel 2 and the fineness sensor 3. The traveling yarn Y guided by enters and exits the slit of the fineness sensor 3. When the running yarn Y enters the slit of the fineness sensor 3, if the running yarn Y is thinner than the specified fineness, the friction within the slit of the fineness sensor 3 is small and the fineness sensor 3 is rotated. This fineness sensor 3 cannot be moved.
The feeler detects that the aircraft is unable to turn and instructs it to join. The movable drum wheel 5 is located below the fixed drum wheel 4, and is provided at the tip of a support lever 8, which is a support member pivotally fixed to the shaft 7, and in a normal reeling state (normal reeling tension). is kept stationary at the lowest position by the weight of a weight 9 attached to the support lever 8. However, if an abnormal tension is applied to the running yarn Y due to the occurrence of a yarn failure, etc., when the running yarn Y reaches a certain tension before it breaks, the movable drum wheel 5 moves the weight 8. It is pulled upward at once by the thread Y against the heavy weight. This movement rotates the brake ring 13 via the cam member 10 integrated with the support lever 8 and the stop lever 11, 12, and brings it into contact with the periphery of the rotating small winding frame 1.
The rotation of the small winding frame 1 is stopped. [Problems to be Solved by the Invention] However, in such a conventional yarn breakage prevention device for a yarn reeling machine, a certain gravity is applied to the movable drum wheel, and the extent to which it becomes a traveling yarn is limited. The movable drum wheel remains stationary even when a tension of As the winding frame was stopped, the movement of the movable drum wheel could not follow the abnormal tension that occurred momentarily due to the inertia of the precious load, resulting in yarn breakage, and In response to the increase in tension, it is not possible to loosen the yarn and alleviate the increase in tension.
There is a problem in that the yarn is subjected to a sudden impact force, causing the yarn to be cut, and even when the yarn is not cut, raw silk is produced which has defects in that the yarn is partially stretched.

[Means for solving the problem] In a binding machine that stops the rotation of the winding frame when a yarn failure occurs due to the generation of knots in the traveling thread wound around the winding frame, A movable drum whose position moves upward as the tension of the running yarn increases is provided on the travel path of the running yarn, and is provided at a position near the movable drum and above the movable drum of the movable drum support member. A balance chain was provided in which both ends were fixed to a balance chain end fixing member and the middle part was bent and suspended. Effect 1: When a yarn failure occurs, the movable drum wheel moves while being pulled by the traveling yarn in response to the increased tension of the traveling yarn due to the yarn failure. As the movable drum wheel moves, the balance chain, which has one end attached to the support member of the movable drum wheel and is suspended by bending its middle part, is pulled up at its end on the movable drum wheel side, and the movable drum wheel is pulled downward. Ifit of the balance chain in the pulling direction increases. This increase increases as the amount of movement of the movable drum wheel increases, and the amount of load that suppresses the displacement of the movable drum wheel increases in response to an increase in yarn tension. [Examples] Examples of the present invention will be described below with reference to the drawings. In the device of the present invention, the running thread Y is connected to a kennel drum wheel 21 that locks the kennel 20. Reciprocating drum wheel 22. Fixed drum wheel 23
．． Mobile drum wheel 24. It takes a route through which it passes through the entanglement 25 and is wound up onto a small frame 26. A fineness sensor 27 is provided opposite to the yarn passing path. In the illustrated example, the fineness sensor 27 is constructed by sandwiching a gauge plate (not shown) of a predetermined thickness in the center of two substantially rectangular plate-like bodies, so that the fineness sensor 27 is arranged between two parallel plate-like bodies. Form slits at intervals. This fineness sensor is
[2 The fineness of the yarn is detected by the size of the yarn, and when the fineness is large and the friction is large, the fineness sensor rotates in the running direction of the yarn (clockwise direction in Figure 1), and the fineness is small. When this happens, there is not enough friction to rotate the fineness sensor, and the R degree sensor does not rotate and remains stationary. Reference numeral 28 denotes a reciprocating rod that operates a feeler (not shown) for detecting whether the fineness sensor 27 is kept stationary. (in the clockwise direction in FIG. 1), the feeler that had advanced for retrieval came into contact with the bin 30 of the welding indicator rod 29 fixed to the side of the fineness sensor 27 and was prevented from advancing. For this reason, the reciprocating rod 28 cannot move, and this causes the start of the welding operation.The reciprocating drum wheel 22 is supported by a swinging arm 31, and the swinging arm 31 is moved at predetermined time intervals (not shown). The movable drum wheel 24 is provided at the tip of a support member consisting of a support lever 34 supported by the frame 32 at @33, and a cam member is provided at the opposite end of the support lever 34. A cam follower 56 provided on a lower arm 38 of a stop lever 39 consisting of an upper arm 37 and a lower arm 38 is in contact with the cam surface 36 of the cam member 35. The upper arm 37 is connected to the frame 32. A roll 42, which is supported together with the lower arm 38 by a shaft 41 on the upper support arm 40 and is integrated with the lower arm 38, is fitted into the elongated hole 43 of the upper arm 37, and one end of the spring 44 wound around the shaft 41 is inserted into the upper support arm 40. The lower arm 38 is attached to the roll 42 by locking the other end to the side of the upper arm 37.
is supported on the upper arm 37 in a bendable state. A brake ring 45 is provided on the upper arm 37, and when the stop lever 39 swings about the shaft 41, the brake ring 45 comes into contact with the outer peripheral edge of the small frame 26. A balance member 60 is provided near the end of the movable drum wheel support member consisting of the support lever 34. The balance member 60 consists of a balance chain 46, and one end of the balance chain 46 is fixed near the end of the support lever 34. The other end of the balance chain 46 is fixed to a balance chain end fixing member 47. The balance chain end fixing member 47 has an adjustment reel 49 provided on a rotating shaft 48 that is commonly provided for each chain through the 8-string, and the end of the balance chain 46 is fixed to the W4 adjustment reel 49. The end of the balance chain 46 is shaped like a string so that it can be easily wrapped around the adjustment reel 49 of the rotating shaft 48, and the middle part is long enough to hang down in a U-shape. Reference numeral 50 denotes a handle provided on the auxiliary shaft 51. A chain 54 is placed between the auxiliary shaft 51 and the rotating shaft 48 via chain wheels 52 and 53, and by operating the handle 50, the rotating shaft 48 can be moved. It is now able to rotate. Reference numeral 55 denotes a guide roll that guides the upper string-like portion of the balance chain 46. Next, the effect will be explained. Knots may occur in the running yarn during binding, and the knots may get stuck in the stringer, making it impossible to run (wind up) the running yarn Y. This is the occurrence of a so-called thread failure. Even in this case, the winding frame continues to wind the yarn, so
The running yarn rapidly increases its tension. Therefore, the movable drum wheel 24 moves upward against the distortion of the balance chain 46 from the point where it is fixed by the support lever 34 to the folded back position bent in a U shape, and moves from the lowest point A to the yarn tension. Move to point B where it is balanced with lff1 of the matching balance chain. Furthermore, when the tension of the yarn Y increases, it similarly moves from point B to point 0, and the weight of the balance chain 46 applied to the movable drum wheel 24 increases accordingly. If the tension in the yarn Y increases not due to the occurrence of a yarn failure but due to an increase in release resistance or other reasons, and the tension decreases when the movable drum wheel 24 moves to point B or point VJ, teeth,
The zero drum wheel 24 moves downward due to the weight of the balance chain 46 and returns to point A. However, if a yarn failure occurs, the tension in the yarn Y continues to increase as long as the winding small frame 26 continues to rotate, and the balance chain 4
Since the weight is greater than the weight applied to the movable drum wheel 24 of No. 6, the movable drum wheel 24 continues to rise and finally reaches point D. At this time, the cam member 35 moves to position D, the stop lever 39 pivots counterclockwise in FIG. Move to point D, contact the outer edge of the rotating small winding frame 26, and the rotational force of the small winding frame 26 moves the brake ring 45 toward the shaft 41 in the rotational direction of the small winding frame 26.
Further turn a (counterclockwise direction) around . As a result, the upper and lower arms 37 of the stop lever 39.
38. Since the cam member 35 is further rotated clockwise around the shaft 33 via the cam follower 56, the movable drum wheel 24 is moved from point D to point E, giving slack to the running yarn Y. . Further, the brake ring 45 bends the upper arm 37 and the lower arm 38 of the stop lever 39 against the force of the spring 44 due to the rotational force of the small winding frame 26, so that the roll 42 in the elongated hole 43 becomes long. After moving a length corresponding to the length of the hole 43, the brake ring 45 finally reaches a point D' and stops the rotation of the small winding frame 26. In this way, when the tension of the running yarn Y increases due to the occurrence of a yarn failure, the movable drum wheel 24 rises against the lff1 of the balance chain 46 corresponding to that position, and as a result, the running yarn Y becomes slack. Therefore, a sudden increase in the tension of the running yarn Y can be avoided. As the tension increases further, it overcomes the correspondingly larger II of the balance chain 46 and the movable drum wheel 24
The brake ring 45, which moves in conjunction with the brake ring 45, moves upward until it touches the outer edge of the small winding frame 26, thereby stopping the rotation of the small winding frame 26.

【Effect of the invention】

As explained above, the present invention has a structure in which, when a yarn failure occurs due to the generation of knots in the traveling yarn wound around the winding frame, the rotation of the winding frame is stopped. In a binding machine of the type that removes this by using a movable drum, a movable drum wheel that moves upward as the tension of the traveling yarn increases in the travel path of the traveling yarn, and a movable drum wheel of the upper member of the movable drum wheel is provided. By installing a suspended balance chain with both ends fixed to the balance chain end fixing member installed near the car and above the movable drum wheel, and with the middle part bent, the tension generated in the running yarn can be reduced when a yarn failure occurs. In response to the increase, the movable drum wheel increases the biasing force in the counter-movement direction and moves in a direction that loosens the running yarn, so a large II is applied to the conventional movable drum wheel from the beginning. As in the case of the case, a large tension is not instantaneously generated in the running yarn, and the tension is gradually increased while giving slack to the running yarn, and when it reaches its maximum value, the winding frame is closed. Since the rotation is stopped, there is no sudden increase in tension in the running yarn, which prevents yarn breakage, and also prevents the running yarn from being partially stretched, resulting in high quality yarn. It is also effective in making raw silk. Also, changes in raw materials, drying, cocoon boiling, and reeling water temperature. If the normal value of reeling tension changes due to changes in processing conditions such as small frame rotation speed, it is necessary to set the balance chain weight accordingly. In this case, one end of the balance chain must be fixed. By manually rotating the adjusted adjustment handle and rotating the rotation shaft, the adjustment reel provided for each binding day is rotated at the same time, creating a simultaneous adjustment device that adjusts the hanging length of the balance chain. It can be operated easily. Particularly at the start of the morning, the unwinding resistance of both schools is large, and the weight of the balance chain that is suitable for normal yarn reeling conditions causes the movable drum wheel to rise, resulting in a malfunction and the winding frame being blocked even though there is no yarn failure. Since this may stop the rotation and make it impossible to continue binding, a certain weight is attached to the support lever to prevent the winding frame from stopping due to the movement of the movable drum wheel even at the start of work. It is necessary to set the yarn to be quite heavy, and as a result, yarn breakage in the event of yarn failure under normal conditions is unavoidable.However, in this case, with the device of the present invention,
When starting work early in the morning, the weight of the balance chain can be set to be heavier using the adjustment device (the condition of the balance chain in this case is shown in Figure 1 F) until the binding condition becomes normal. ), there is no need to stop the winding frame, and yarn breakage can be prevented even when the reeling condition is normal. Furthermore, in the past, even if there was no yarn breakage, if a yarn failure occurred and the small frame stopped, the traveling yarn would be partially stretched due to the generation of abnormally large tension, and in this case, this yarn When fabrics are made from strips, they have defects that appear as defects in textiles, but this method is highly effective in correcting these defects and producing high-quality raw silk.

[Brief explanation of the drawing]

FIG. 1 is an overall side view of the device of the present invention, FIG. 2 is an overall front view of the same, and FIG. 3 is an overall side view of the conventional device. 22...Fixed drum wheel, 24...Movable drum wheel. 26... Small winding frame, 27... Fineness sensor. 34...Support lever, 46...Balance member. 47...Balance chain end fixing member. 48...Rotating shaft, 49...Adjustment reel.

Claims (1)

[Claims] 1. In a yarn reeling machine that stops the rotation of the winding frame when a yarn failure occurs due to the generation of knots in the running yarn wound around the winding frame, A movable drum wheel that moves upward as the tension of the running yarn increases is provided on the traveling path of the movable drum wheel, and balance chain ends are provided at positions near the movable drum wheel and above the movable drum wheel of the movable drum wheel support member. A balance chain is provided with both ends fixed to a fixed member and suspended by bending the middle part, and as the movable drum wheel moves upward, one end of the balance chain is pulled up and the movable drum wheel is pulled downward. 1. A yarn breakage prevention device for a yarn reeling machine, characterized in that the yarn breakage prevention device is configured to increase. 2. The yarn in the yarn reeling machine according to claim 1, wherein the balance chain end fixing member has a rotating shaft, and the balance chain is fixed to an adjustment reel whose end is fixed to the rotating shaft. Strip cut prevention device.