JP3131807U - Yarn feeder in knitting machine - Google Patents

Abstract

In a yarn selective yarn feeding device having a yarn guide arm and a selector lever, etc., which are formed by arranging a plurality of plate-like bodies in parallel, the outside air flows into a gap in the device without being sealed. Thus, a device is obtained in which accumulation of fluff dust and the like that has fallen off from the knitting yarn does not occur.
A plurality of stacked yarn guide arms for guiding a knitting yarn inserted through a yarn guide hole to a knitting position of a knitting needle or withdrawing the knitting needle from a knitting position to a standby position, and fixing the yarn guide arms to the respective positions. A plurality of selector levers provided to face each of the plurality of thread guide arms, and the thread guide arms, the selector lever, and the position fixing means are provided in pairs. A bar passed between the side plates was supported between the side plates, and a window for opening the inside was provided on the side plate.
[Selection] Figure 3

Description

  The present invention relates to a yarn feeding device in a circular knitting machine.

  2. Description of the Related Art Conventionally, a yarn selection guide device used in a circular knitting machine has a plurality of yarn guide arms when selecting a yarn to be fed, and a desired yarn is fed by a selected yarn guide arm among them. A plurality of selected yarn feeding devices that suspend the yarn guide arm holding the old yarn that had been knitted until then to the standby position and stop the yarn feeding. It is arranged around the knitting machine cylinder.

  These selective yarn feeders have a number of yarn guide arms equal to the number of yarn types in order to hold a plurality of types of yarns, and position fixing means for advancing / withdrawing or fixing the positions of the yarn guide arms toward the knitting needles for each yarn. The yarn guide arm and the selection means for operating the yarn guide arm are provided in a thin plate shape, and are stacked and supported in a stacked state (see Patent Document 1).

Therefore, the gap between the members is extremely small, the air flow of the outside air is hindered inside the selective yarn feeding device, the accumulation of fibers scattered from the knitting yarn is large, and the operation of each part of the device is adversely affected, or the accumulated dust is peeled off. As a result, the product was also affected.
JP 2004-131908 A

  In view of the above points, the present invention provides a yarn selection yarn feeding device having a yarn guide arm formed by laminating a plurality of plate-like bodies, a selector lever, and the like. It is an object of the present invention to obtain a device that allows inflow of outside air into the gap portion of the knives and does not cause accumulation of fluff dust and the like dropped off from the knitting yarn.

The yarn feeding device according to claim 1, wherein a plurality of stacked yarn guide arms for guiding the knitting yarn inserted through the yarn guide hole to a knitting position of the knitting needle or retracting the knitting needle from the knitting position to the standby position; And a plurality of selector levers provided on each of the plurality of thread guide arms, wherein the thread guide arms, the selector lever, and the position fixing means are paired with each other. It is supported between the side plates by a bar provided between the provided side plates, and a window for opening the inside is provided on the side plate.
According to a second aspect of the present invention, there is provided the yarn feeding device according to the first aspect, wherein the yarn guide arm guiding means provided so as to sandwich the yarn guide arm for guiding the yarn guide arm is provided on the side plate. It provided so that it might be supported in parts other than the part which opposes the formed window part.

The present invention provides a plurality of stacked yarn guide arms that guide the knitting yarn inserted through the yarn guide hole to the knitting position of the knitting needle or retract the knitting needle from the knitting position to the standby position, and fix the yarn guide arms to the respective positions. A plurality of selector levers provided to face each of the plurality of thread guide arms, and the thread guide arms, the selector lever, and the position fixing means are provided in pairs. It is supported between the side plates by a bar that passes between the side plates, and the side plates are provided with windows for opening the inside. When the knitting yarn passing through the yarn comes into contact with the yarn guide member, scattered matter such as fluff and dust adheres to the yarn guide arm, selector lever, etc. Such as sticking to the knitted fabric It is possible to prevent slipping in advance, and to clean very easily and frequently by inserting a cleaning tool into the internal opening window provided on the side plate for dust adhering to the inside of the device. I can do it.
Further, in the device of the present invention, since the guide means of the thread guide arm is not provided at a position close to the window for opening the inside, the circulation of ventilation to the inside of the device is not hindered. It is possible to prevent accumulation and adhesion of falling fibers and dust.

Next, an embodiment of the device of the present invention will be described with reference to the drawings.
1 to 3 show a yarn feeding device 1 according to the present invention. FIG. 1 is a side view, FIG. 2 is a side view with a side plate 2 removed, and FIG. 3 is a side view of a selector lever 3 and a thread guide arm 4. It is a longitudinal cross-sectional view of the state made. A plurality of yarn feeding devices 1 are provided above a cylinder 6 having a plurality of needles 5.

  The yarn feeding device 1 includes a selector lever guide 8 composed of a block having a plurality of selector lever grooves 7 for slidingly fitting a plurality of selector levers 3 in a stacked state, and a plurality of plate-like bodies having a yarn guide hole 9 at the tip. A yarn guide arm 4 supported by a guide member 42 described later so as to be capable of moving forward and backward in the direction of the yarn guide hole 9; a position fixing means 10 for preventing the perturbation at the advancing / retreating end portion of the yarn guide arm 4; A thread end cutting and gripping member 15 is provided between the side plates 2 and 2 and is supported by slidingly fitting a plurality of sets of blades 11, movable blades 12 and thread presser plates 13 into the grooves 14 a of the separator 14. is doing.

The selector lever 3 and the selector lever guide 8 which is a support guide device thereof will be described.
A plurality of selector levers 3, six in the illustrated example, are supported by a shaft 16 provided between the pair of side plates 2 and 2 in a stack so as to be swingable, and a pin 17 provided on the central side surface and the side plate 2. The shaft 16 is wound around the spring end support rod 18 provided between the two and the spring 19 is bridged, and the selector lever 3 is urged and supported to turn counterclockwise about the shaft 16. To do. The plate-like selector lever 3 is inserted into the selector lever groove 7 of the selector lever guide 8 by the support by the above means.

  The selector lever 3 bends roughly in the shape of a letter, and a downward center protruding portion 21 that abuts an upper bat 20 of the thread guide arm 4 described later is provided at the center of the bent portion. A plurality of selector bats 22 project from the upper edge of one selector lever 3. Then, by leaving one of the predetermined selector bats and cutting out the other, the plurality of selector levers 3 inserted into one selector lever guide 8 are arranged so that the bats 22 protrude at different positions. To do.

  An actuator 23 is provided above the selector bat 22. The actuator 23 is supported so as to rotate synchronously with the rotation in the circular knitting machine. The actuator 23 is provided with a swinging claw 24 at its lower part, and each claw 24 faces each bat 22 of the plurality of selector levers 4, and the swinging claw 24 positions the tip vertically when the actuator 23 is operated. Then, it abuts against the butt 22 of the selector lever 3 facing it and pushes down the butt 22, and in FIG. 3, the selector lever 3 pivots around the shaft 16 in the clockwise direction.

  Below the selector lever 3, the selector lever 3 and a pair of thread guide arms 4 are supported by guide levers 25 and 26 that are passed between the side plates 2 and 2. The guide bar 25 and the M-shaped guide groove 27 provided at the base of the yarn guide arm 4 are slidably fitted into the guide bar 25 and the V-shaped guide groove 28 provided near the center of the yarn guide arm 4 and the guide lever 26, respectively. By doing so, the thread guide arm 4 is supported so as to be able to move forward and backward in the left and right directions in FIGS. 2 and 3, and the end of the spring 31 supported by the spring support rods 29 and 30 is brought into contact with the lower edge of the thread guide arm 4. By contacting, the same arm 4 is biased so as to be able to turn counterclockwise in FIG. 3 around the guide bar 26. Positioning recesses 32 and 33 and a lower butt 34 are provided on the lower edge of the thread guide arm 4. The plurality of yarn guide arms 4 are slidable within the gaps of the yarn guide arm guide means 42a in which guide plates 42 are stacked in parallel with a gap and supported between the side plates 2 and 2 by bolts 43. It is supported. A spacer 44 is slightly thicker than the thread guide arm 4. The guide plate 42 is long enough to cover the portion of the M-shaped guide groove 27 that is substantially half of the yarn guide arm 4 so as not to cover the window 2a provided on the side plates 2 and 2, and to open the window 2a. To prevent it. When the lower butt 34 of the yarn guide arm 4 protrudes downward, a take-out cam 35 and a return cam 36 are provided at a position where the lower butt 34 comes into contact therewith.

  Position fixing means 10 is provided between the selector lever 3 and the thread guide arm 4 to prevent the thread guide arm 4 from moving away. The position fixing means 10 supports the lock levers 40 and 41 swingably on the support shafts 38 and 39 provided on the selector lever guide 8, and stretches a spring 37 between the tips of the levers 40 and 41. 40 and 41 are urged so that their tips approach each other, and the base of the upper bat 20 of the yarn guide arm 4 located between the tips of both levers 40 and 41 is arranged so as to contact the tip of one of the levers 40 and 41. ing.

  Along with each thread guide arm 4, a cutter composed of a fixed blade 11 and a moving blade 12 and a thread presser plate 13 for cutting and holding the thread guided by the thread guide arm 4 at rest are stacked in a stacked state. Hooks 45, 46, and 47 are provided at the tips of the fixed blade 11, the moving blade 12, and the thread presser plate 13, respectively. A cutting blade 45 a is provided outside the hook 45, and a cutting blade 46 a is provided inside the hook 46. The fixed blade 11 and the thread presser plate 13 are supported in a fixed state by bars 48 and 49 provided between the side plates 2 and 2, and the movable blade 12 is slidably provided in a laminated state by the bar 48 therebetween. The end of the movable blade 12 is guided by fitting into the groove of the spacer 50 supported by the spring support rods 29 and 30.

Next, the operation of the device of the present invention will be described.
When the yarn supplying device 1 is not supplying yarn at all, the selector lever 3 is lifted up by the urging force of the spring 19 and protrudes from the butt 22. The yarn guide arm 4 is urged upward by a spring 31 in a retracted state, and the lower butt 34 is drawn into the yarn feeder 1. Then, when the rotated actuator 23 comes into contact with the yarn feeding device 1, if it is necessary to feed the yarn possessed by the yarn feeding device 1, the actuator 23 is operated to swing a predetermined swinging claw 24. It moves and comes into contact with the bat 22. The bat 22 is pushed in by this, and the selector lever 3 moves the tip 3a downward to contact the upper bat 20 of the thread guide arm 4, and feeds the lower bat 34 against the force of the spring 31 against the thread guide arm 4. Project from the lower surface of the device 1. As a result, the lower bat 34 enters the locus of the take-out cam 35 and is pushed by the take-out cam 35 as the knitting machine rotates. It moves to the left in the figure and enters a state. That is, since the V-shaped guide groove 28 fitted to the guide bar 26 is positioned at the bottom of the V-shape to be fitted with the guide bar 26, the yarn guide hole 9 of the yarn guide arm 4 rises and moves horizontally. Therefore, the top of the knitting needle 5 held by the knitting machine cylinder 6 is exceeded.

  Next, the lower butt 34 of the thread guide arm 4 reaches the vicinity of the top of the take-out cam 35 shown in FIG. 6, the base side surface 20a of the upper bat 20 of the thread guide arm 4 and the protrusion at the tip of the lock lever 41 come into contact with each other. The lever 41 turns in the clockwise direction as it is. When the lower butt 34 of the thread guide arm 4 reaches the top of the cam 35, the thread guide arm 4 is guided by the guide bars 25 and 26 and advances most to the left in FIG. 3, and the thread guide arm 4 is a spring. By rotating the guide bar 26 around the guide bar 26 by the urging force of 31, the guide bar 25 and the lower arm part of the M-shaped guide groove 27 are fitted together, and the lower end of the thread guide arm 4 is raised to lower the lower butt 34. Pull into the yarn feeder 1. At the same time, the yarn introduction guide hole 9 at the tip of the yarn guide arm 4 is slightly lowered and stops at the yarn supply position to the needle 5. At this time, as the thread guide arm 4 advances (leftward in FIG. 3), the pin 4a provided on the side surface of the thread guide arm 4 comes into contact with the concave front wall 12a on the upper edge of the moving blade 12, and the thread guide arm 4 The moving blade 12 advances with the advance.

  The yarn feeding by the yarn guide arm 4 proceeds a predetermined course, and then the yarn is switched. This yarn switching is equivalent to stopping the first yarn feeding of one yarn feeding device 1 and feeding the second yarn. Accordingly, the supply of yarns is stopped and the new yarns are fed simultaneously by an operation in which the timings of the actuators 23 are matched. However, the new and old yarns are fed slightly with respect to the wale as described later. However, since the operation of the actuator 23 is extremely short, the pressing of the bat 22 does not continue for a long time, and the selector lever 3 immediately returns to the original position.

  To stop the yarn that has been fed up to that point (referred to as the old yarn), the following procedure is used. When the yarn guide arm 4 is advanced and the yarn is fed, the actuator 23 is operated and the butt 22 of the selector lever 3 is pushed by the swinging claw 24 of the actuator 23. As indicated by the chain line, the upper bat 20 of the thread guide arm 4 is pushed by the central protrusion 21 by pivoting in the clockwise direction about the shaft 16. However, since the actuating time of the actuator 23 is extremely short, the pressing of the upper bat 20 does not continue for a long time and the selector lever 3 immediately returns to the original position by the elastic force of the spring 19. When the upper bat 20 is pressed, the thread guide arm 4 pivots around the guide bar 26 in the clockwise direction, and the lock lever 41 is pulled by the spring 37 and pivots in the counterclockwise direction so that the top flat portion 41a is moved over the upper bat 20. Even if the pressing of the central protrusion 21 due to the return of the selector lever 3 to the original position is released, the yarn guide arm 4 is able to feed the lower bat 34 to the yarn feeding device 1 even if the elastic force of the spring 31 is received. It is in a locked state so as to maintain a protruding stationary state without being inside.

  By this operation, the yarn guide arm 4 holding the old yarn pivots in the clockwise direction around the guide bar 25 and the lower butt 34 protrudes out of the yarn feeder 1. Therefore, as shown in FIG. 6, the lower butt 34a of the yarn guide arm that holds the old yarn comes into contact with the return cam 36 and is pulled down. When the return cam 36 starts pulling back the thread guide arm 4, the shoulder 20a of the upper bat 20 also moves to the right, so that the flat and protruding portions of the lock lever 41 are disengaged from the shoulder 20a, and the lock is released. Is done. However, due to the relationship between the shape of the M-shaped guide groove 27 and the guide bar 25, the lower butt 34 is fed until the thread guide arm 4 is pulled back most and the guide bar 25 enters the recessed fitting portion 27 a at the end of the M-shaped guide groove 27. Projecting to the bottom of the yarn device 1. When the return cam 36 and the bat 34a are disengaged, in the yarn feeder 1, the yarn guide arm 4 is pushed upward by the elastic force of the spring 19, and the M-shaped guide groove 27 When the end concave portion 27a and the guide bar 25 are fitted, the rear end portion of the yarn guide arm 4 turns upward, and the lower butt 34 enters the yarn feeder 1 to be in the state shown in FIG.

  When the thread guide arm 4 is retracted, the pin 4a of the thread guide arm 4 engages with the rear wall 12b of the concave portion provided on the upper edge of the moving blade 12 protruding forward and opening the hook 46, so that the thread guide arm 4 As it moves backward, the hook 46 of the moving blade 12 is moved backward via the pin 4a. Prior to this, the pin 4a of the thread guide arm 4 and the concave side wall 12b of the moving blade 12 come into contact with each other by the retraction of the thread guiding arm 4 prior to this, so that the thread guide hole 4b of the thread guiding arm 4 and the moving blade 12 Since the position with the hook 46 coincides, the thread guided by the thread guide hole 4b enters the hook 46, and the thread is moved as the moving blade 12 is further moved backward by the backward movement of the thread guide arm 4. The yarn is cut by the twelve blades 46 a and the blade 45 a of the fixed blade 11, and the yarn end is held between the hook 46 of the moving blade 12 and the hook 47 of the yarn presser plate 13.

  When the knitting yarn is switched, the knitting pause yarn and the yarn for newly starting knitting are slightly knitted simultaneously on the wale. That is, when the actuator 23 simultaneously operates the swinging claws 24 and 24 for the selector levers 3 and 3 of the old and new yarns, the selector levers 3 and 3 of the both yarns are simultaneously under the guide arms 4 and 4 of the old and new yarns. Even if the bats 34 and 34a (34a is shown in FIG. 6) are taken out, the take-out cam 35 at the preceding position in the rotational direction of the knitting machine first comes into contact with the lower butt 34 of the yarn guide arm 4 of the new yarn. When the butt 34 rises along the inclined surface 35a and reaches the top of the take-out cam 35, the lower butt 34 hides in the yarn feeder 1 by the above-described action and does not come into contact with the subsequent return cam 36. Next, since the return cam 36 in the succeeding position acts on the lower butt 34a of the yarn guide arm of the yarn that stops feeding, both yarns are fed only during L shown in FIG.

  Each time the above thread switching is performed, the stacked selector lever and the thread guide arm paired with it are selected, and the selector lever swings, the thread guide arm slides, etc., and the knitting yarn is cut. Since the operation of holding the end of the yarn is performed, the fibers constituting the knitting yarn are very often dropped, and the density of the scattered fibers is extremely high inside the yarn supplying device. In the device of the present invention, a window for opening the inside is provided on the side plate of the yarn feeding device that surrounds the selector lever, the yarn guide arm, and the yarn cutting holding member, thereby preventing the accumulation of scattered fibers inside the device and at the time of maintenance. The internal dust is easily removed by suction.

The side view of this invention apparatus. The side view which removed the side plate. The longitudinal side view of the state cut | disconnected by the side of a selector lever and a thread guide arm. A is a side view of a fixed blade, B is a side view of a moving blade, C is a side view of a thread presser plate, D is a side view of a separator of a thread cutting holding member, E is the front view, and F is a side view of a selector lever. , G are side views of the thread guide arm, and H and I are side views of the spacer. A is a sectional view of a selector lever guide, and B is a bottom view thereof. Arrangement diagram of take-out cam and return cam to advance and retreat the thread guide arm.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Yarn feeder 2 Side plate 2a Window 3 Selector lever 4 Thread guide arm 5 Needle 6 Cylinder 8 Selector lever guide 9 Thread guide hole 10 Position fixing means 11 Fixed blade 12 Moving blade 13 Yarn presser plate 14 Separator 16 Shaft 20 Upper butt 38, 39 Support shaft 40, 41 Lock lever 42 Guide plate 42a Thread guide arm guide means

Claims (2)

  A plurality of stacked yarn guide arms for guiding the knitting yarn inserted through the yarn guide hole to the knitting position of the knitting needle or withdrawing from the knitting position to the standby position, and a position fixing means for fixing the yarn guide arm to each position. And a plurality of selector levers provided to face each of the plurality of thread guide arms, and the thread guide arm, selector lever, and position fixing means are disposed between the side plates provided in the pair. A selective yarn feeding device in a knitting machine, characterized in that it is supported between side plates by a passed bar, and a window for opening the inside is provided on the side plate.   In order to guide the yarn guide arm, the yarn guide arm guide means provided so as to sandwich the yarn guide arm is provided so that the yarn guide arm is supported at a portion other than the portion facing the window portion provided on the side plate. 2. The selective yarn feeding device in a knitting machine according to claim 1, wherein

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