KR20050071569A - Yarn-supplying apparatus in knitting machine - Google Patents

Abstract

A yarn-supplying apparatus and a yarn- supplying apparatus system are disclosed. The yarn-supplying apparatus is capable of preventing undesired movement of a yarn guide arm and actuating a movable blade for cutting a yarn end in coordination with the movement of a yarn guide member. The yarn-supplying apparatus system is capable of circulatingly moving selection means, such as a single actuator, between the yarn-supplying apparatuses. A yarn-supplying apparatus (1) in a knitting machine is characterized in that the apparatus comprises yarn guide members (17), an intervention member (4) such as a selector, and a lock mechanism (40) capable of, when one of the yarn guide members (17) is advanced in the locus of a yarn guide arm- moving cam by selection means (25) such as an actuator through the intervention member (4), fixing a condition where the yarn guide member (17) is being advanced in the locus of the yarn guide arm-moving cam.

Description

Yarn feeding machine {YARN-SUPPLYING APPARATUS IN KNITTING MACHINE}

The present invention relates to a feeding device in a knitting machine and a feeding device system in a knitting machine.

In the conventional circular knitting machine, a plurality of yarns are placed along the main edge of the cylinder to hold a plurality of yarns for each feeding device, and the yarns of different colors or qualities are suddenly selected during yarn knitting to express shapes. I'm making it. Each of the plurality of steeply disposed teeth is selected and operated by selecting one of a plurality of thread guide arms opened one by one in a thread guide hole at a distal end. When the yarn is pulled out from the knitting position or the knitting by the yarn is stopped, the yarn held by the thread guide arm in the knitting position is removed from the knitting position. In operation of the seal guide arm, a selection means such as an actuator or a solenoid is operated by a signal from a storage medium, and the movement of the selection means such as an actuator is directly or indirectly transmitted to the seal guide member (Patent Documents 1, 2, 3)

The operation of the actuator by the signal from the storage medium is completed by swinging the actuator's vibrating finger from the standby position to the operating position and returning to the original standby position, but the operation time between them is short, and the seal guides by the operation of the actuator. If the arm is displaced and the butt of the thread guide arm is in contact with the thread guide arm control cam and a slight deviation occurs in the movement until the thread guide arm starts to advance to the steep position, the butt of the thread guide arm is not in contact with the cam Otherwise, breakage and failure may occur between these members and other members, causing the knitting machine to stop.

In addition, since the actuators, solenoids, and the like must be installed in the feeders installed at the plurality of positions, the number of the installation increases, for example, to operate the feeder arm for feeding one thread. If two actuators or the like are installed, the number is equal to the number of threads, and the apparatus itself becomes large and complicated.

Patent Document 1 Special Publication No. 50-6578

Japanese Patent Application Laid-Open No. 52-110964

Patent Document 3 Publication No. 1-21988

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view of a yarn feeding standby state of the present yarn feeding device.

Fig. 2 is a cross-sectional view of the locked state when the seal guide arm in the state where the actuator is retracted to the operation standby position in the feeding device of the present invention.

Fig. 3 is a cross-sectional view of the yarn feeding hole of the thread guide arm in the yarn feeding device of the present invention having crossed a needle train.

4 is a cross-sectional view of the yarn feeding device of the present invention when the seal guide arm is in the position immediately before advancing.

5 is a cross-sectional view of the yarn feeding device of the present invention when the seal guide arm is in the most advanced position.

6 is a cross-sectional view of the locked state in which the yarn guide arm which has advanced to the yarn feeding position in the yarn feeding device of the present invention.

7 is a layout view of a forward cam and a return cam for advancing and retracting the seal guide arm.

8: A is a fixed blade, B is a moving blade, C is a side view of a thread press plate.

[Configuration of Invention]

In view of the above, the present invention relates to a circular knitting machine having a plurality of steeply steep teeth each having a plurality of thread guide arms, wherein the thread guide member is interposed between an interposing member such as a selector by means of a selection means such as an actuator. It aims at preventing unnecessary movement of a seal guide arm by providing the lock mechanism which can fix the advance when it advances in the trajectory of a moving cam. In addition, by circulating the selection means such as an actuator between the feed yarns, there is only one common unit, and the apparatus is simplified. In addition, the moving blade for cutting the thread is operated in conjunction with the movement of the thread guide arm, thereby increasing the reliability of the cutting operation.

The steeping device of the present invention is a yarn feeding device in a knitting machine, wherein one of the plurality of thread guide members passes through the interposition member by means of a plurality of thread guide members, interposing members such as a selector, and a selection means such as an actuator. The lock guide mechanism is provided when the seal guide member moves in the trajectory of the seal guide arm moving cam and is fixed in the state where the seal guide member moves in the trajectory of the seal guide arm moving cam.

The lock mechanism further includes a state in which the seal guide member advances into the locus of the seal guide arm moving cam in a period immediately before the seal guide member advances to the sudden feeding position and a period immediately before exiting from the yarn feeding position. It is characterized in that the fixing.

And a thread cutting member having a fixed blade and a moving blade, wherein the moving blade is linked with the movement of the thread guide member, so that the moving blade with respect to the fixed blade when the thread guide member exits from the sudden feeding position. It is characterized by cutting the thread by moving.

Moreover, the feeder system of this invention is a feeder system in a knitting machine, Comprising: It consists of a some feeder system and selection means, such as a single actuator, The said steep gear is a plurality of thread guide members, a selector, etc. Of the seal guide member and the seal guide arm moving cam when one of the plurality of seal guide members enters the track of the seal guide arm moving cam by the selection means. The lock mechanism which fixes the state which advanced | enterted in the inside is provided, The said selection means is characterized by the circular movement between the said several yarn feeding apparatus. It is characterized by the above-mentioned.

Best Mode for Carrying Out the Invention

EMBODIMENT OF THE INVENTION Embodiment of the feeding machine of the circular knitting machine of this invention is described next with drawing. The circular knitting machine is equipped with a plurality of feeding machines (feeding machine system). The longitudinal cross section of each feeding device 1 is shown in FIG. The feeding device 1 is provided on a cylinder 3 having a plurality of needles 2. The number to be installed is not particularly limited but is preferably arranged at intervals such as a plurality of cases.

The feeder 1 is a side covering both sides of the selector lever guide 6 and the selector lever guide 6, each of which is formed of a block having a selector lever hole 5 that sandwiches a plurality of selector levers 4 to be described later in parallel. The plate 7, the shaft 8 provided over the upper both sides of the both side plates 7, and the arm 9 are provided. The shaft 8 and the arm 9 are suspended from the annular body 10 which forms part of the circular knitting machine frame. A bolt 12 extending downward from the arm 9 is connected to the shaft 11 provided over the tip of the side plate 7, and the bolt 12 is adjusted to secure the horizontal feeding device 1. Doing.

In each selector lever hole 5, each selector lever 4 is supported so as to move freely by the shaft 15 between the side plates 7. A plurality of selector butts 16 protrude from the upper edge of the selector lever 4. The selector levers 4 (6 pieces in the illustrated example) inserted in the one selector lever guide 6 are cut out while leaving the predetermined selector butt 16 therein. 16) to protrude. In the center portion of the bent portion that is bent to the approximately? -Shape of the selector lever 4 located in the selector lever guide 6, the downwardly directed central protrusion 19 contacting the upper butt 18 of the seal guide arm 17 described later. Install).

The pin 20 is provided on the side of the selector lever 4. A spring end support rod 21 is provided between the side plates 7, and a spring 22 is wound around the pin 15 and the spring end support rod 21 so as to span the selector. A force is applied such that the lever 4 always turns counterclockwise as shown in FIG. 1, that is, the butt 16 always projects upward.

The actuator 25 is provided on the selector butt 16. The actuator is supported by an arm that protrudes from a rotating part in the circular knitting machine, that is, a driving part such as a cam mechanism for operating a needle and the like, which rotates at the same time. Therefore, the operation of the needle 2 and the operation of the actuator 25 are completely performed simultaneously.

The actuator 25 is provided with swing fingers 26 (six in the illustrated example) at the lower portion thereof. Each swing finger 26 is positioned opposite each butt 16 of the plurality of selector levers 4, and when the signal is not output to the actuator 25, the tip is positioned to the left as shown, for example. When a signal is issued to the first of six, the butt 16 is brought into contact with the butt 16 of the selector lever 4 located opposite the swing finger 26 to the right. Will be pushed down. Under the selector lever 4, the seal guide arm 17 corresponding to the selector lever 4 is provided so as to be supported by guide rods 27 and 28 crossing between the side plates 7.

By inserting the M-shaped guide hole 29 provided in the base portion of the guide rod 27 and the seal guide arm 17 and the V-shaped guide hole 30 and the guide rod 28 provided near the center, respectively. While supporting the seal guide arm 17 to be advanced and retracted in the left and right directions in the drawing, the end of the spring 32 supported by the spring support part 31 abuts against the lower edge of the seal guide arm 17. Therefore, a force is applied so that the entire seal guide arm 17 can always move upward. For the seal guide arm 17, 33 and 34 are positioning recesses, 35 are upper recesses, and 36 are lower butts. Under the rotational trajectory of the feeding device 1, when the lower butt 36 of the seal guide arm 17 protrudes downward, the forward cam 51 and the return cam 52 are provided. have.

A lock mechanism 40 is provided between the selector lever 4 and the seal guide arm 17. The lock mechanism 40 is provided with lock levers 43 and 44, and the lock levers 43 and 44 are fitted to each of the pair of support shafts 41 and 42 to move freely and to support the support shafts 41 and 42. Supported by). The lock levers 43 and 44 have a symmetrical shape, and are provided with projections 45 and flat portions 46 at their respective ends, both of which are attracted to each other by means of the springs 47 interlocked at the ends. Or the flat portion 46 is in contact with the seal guide arm 17. 48,49 is a stopper.

For each of the thread guide arms 17, a cutter is provided for cutting and holding the thread guided by the thread guide arm 17 at rest. The cutter consists of the fixed blade 60, the moving blade 61, and the thread press plate 62 shown in FIG. 8, and forms a plate-shaped object, respectively, and the fixed blade 60 has the moving blade 61 as the center. The moving blade 61 and the thread pressing plate 62 are stacked on the thread guide arm 17 in a laminated state. Hooks 63, 64, and 65 are installed at the ends of the fixed blade 60, the moving blade 61, and the thread presser plate 62, respectively, and the cutting blade 63a is disposed outside the hook 63. Cutting blades 64a are provided inside the hook 64, respectively. The fixed blade 60 and the seal pressing plate 62 are supported by the rods 66, 67 and 68 and the guide rods 27 and 28 which span between the side plates 7. In addition, the moving blade 61 is supported by the guide rods 27 and 28 through the long holes 69 and 70 provided in two right and left positions so that sliding to the left and right is possible. Moreover, the pin 71 is provided in the side surface of the moving blade 61, and when the said pin 71 contacts the side wall 35a of the upper concave part 35 of the seal guide arm 17, it pushes in there. I can move it.

The following describes the operation of the apparatus of the present invention. When the feeding device 1 does not feed at all, as shown in FIG. 1, the upper edge of the selector lever 4 is raised by the spring 22 so that the butt 16 protrudes. Then, the seal guide arm 17 is forced upward by the lower spring 32 in the retracted state, and draws the lower butt 36 into the feeding device 1. When the common single actuator 25 circulated from the position of another feeding device among the plurality of feeding devices reaches the feeding device 1, if it is necessary to feed the thread of the feeding device 1, the actuator (25) is operated to move the predetermined swing finger 26 to contact the butt 16. The butt 16 is pushed in by it, and as shown in FIG. 2, the selector lever 4 moves the tip 4a downward to come into contact with the upper butt 18 of the thread guide arm 17, and thus the seal guide. The arm 17 projects the lower butt 36 downward of the feeding device 1 while resisting the force of the spring 32. As a result, the lower butt 36 enters the trajectory of the advance cam 51. In this state, the lock mechanism 40 can hold | maintain the state which contact | abuts the tip 4a of the selector lever 4 with the upper butt 18 of the seal guide arm 17, as shown in FIG. That is, the lock mechanism 40 fixes the state in which the seal guide arm 17 advanced in the trajectory of the advance cam 51 during the period immediately before the seal guide arm 17 enters the steeping position. In addition, the period immediately before the thread guide arm 17 advances to the yarn feeding position means the time zone immediately before the yarn guide arm 17 advances to the yarn feeding position.

In this way, the lock mechanism 40 fixes the state in which the thread guide arm 17 has advanced in the trajectory of the advance cam 51 just before the seal guide arm 17 advances to the steeply inclined position. Although the operation time is short, the movement relationship between the upper butt 18 of the seal guide arm 17 and the advance cam 51 can be assured. As a result, the upper butt 18 of the seal guide arm 17 and the forward cam 51 can be brought into contact with the correct timing.

Thereafter, the following process proceeds. That is, although the state where the seal guide arm 17 advanced into the trajectory of the advance cam 51 is fixed by the lock mechanism 40, in this state, even if it is pushed by the advance cam 51 according to the rotation of the knitting machine, As shown in FIG. 7, the lower butt 36 moves along the inclined surface 51a of the advance cam 51, and the seal guide arm 17 moves to the left side as shown in FIG. 2, and is in the state shown in FIG. . That is, since the V-shaped guide hole 30 fitted and engaged with the guide rod 28 is fitted into the guide rod 28 at the bottom of the V-shape, the seal guide hole 53 of the seal guide arm 17 is raised. It moves horizontally and passes over the top of the needle 2 hold | maintained in the knitting machine 3 in the meantime.

Subsequently, the lower butt 36 of the thread guide arm 17 reaches to the vicinity of the top of the advance cam 51 shown in FIG. 7, and as shown in FIG. 4, the upper concave portion of the thread guide arm 17 is reached. The side wall 35a of 35 and the projection 45 at the tip of the lock lever 44 are in contact with each other, and the lock lever 44 is rotated in the clockwise direction as it is. When the lower butt 36 of the seal guide arm 17 reaches the top of the advance cam 51, the seal guide arm 17 is guided to the guide rods 27 and 28 to advance to the forefront as shown in FIG. On the other hand, the seal guide arm 17 is rotated about the guide rod 28 by a spring 32 to engage the lower portion of the arm of the guide rod 27 and the M-shaped guide hole 29, the seal guide arm The lower butt 36 is drawn into the feeding device 1 by raising the rear end of 17.

At the same time, the thread guide hole 53 at the tip of the thread guide arm 17 descends slightly and stops at the steeping position to the needle 2. At this time, the pin 71 of the moving blade 61, which is in contact with the side wall 35a of the upper concave portion 35 of the thread guide arm 17, is also pushed along with the advance of the seal guide arm 17. (61) also advances and is opened in a U-shape on the hook 64 of the moving blade 61 hidden between the hooks 63 and 65 of the plate 62 by pressing it with the fixed blade 60. The blade 64a appears. Knitting is performed so that yarn Y being fed is not entered into the hook 64 which has the said blade 64a in the middle of feeding.

When the yarn feeding by the yarn guide arm 17 advances a predetermined course, the cutting of the next yarn is changed. Such a change of cutting of the yarn corresponds to stopping the yarn feeding of the first yarn of the one yarn feeding device 1 and feeding the yarn of the second yarn. Therefore, by the operation which matched the timing by the actuator 25, supply of a sudden feed and a new thread are simultaneously performed. However, both new and old companies are suddenly mixed and fed to some wale as will be described later. Then, the pressure of the butt 16 does not continue long so that the operation of the actuator 25 can be extremely short, and immediately the selector lever 4 returns to its original position.

To stop the yarn (speaking the yarn) that has been killed in such a manner, proceed as follows. When the feeder is operated in the state shown in FIG. 5, the selector lever 4 is operated by operating the actuator 25 and pushing the butt 16 of the selector lever 4 into the swing finger 26 of the actuator 25. Rotate clockwise as shown in 5 to press the upper butt 18 of the seal guide arm 17 into the central projection 19. Then, since the operating time of the actuator 25 is extremely short, the pressure of the butt 16 does not continue long and immediately the selector lever 4 returns to the original position by the spring force of the spring 22. By pressing the upper butt 18 of the seal guide arm 17 by the central protrusion 19 of the selector lever 4, the seal guide arm 17 pivots clockwise about the guide rod 28. The lock lever 44 which is in contact with the tip projection 45 on the side wall 35a of the positioning recess 35 is freed, and as shown in FIG. 6, the lock lever 44 is pulled by the spring 47 and turned counterclockwise. The flat guide 46 is in contact with the rear end 18a of the upper butt 18, and the seal guide arm 17 is a spring 32 even when there is no pressure of the central protrusion 19 due to the return of the selector lever 4 to its original position. The lock state is shown so that the lower butt 36 is protruded and kept in a stopped state without receiving the elastic force of).

By this operation, the thread guide arm 17 holding the yarn is rotated clockwise around the guide rod 28 to project the lower butt 36 out of the feeding device 1 (shown in FIG. 6). ).

As shown in FIG. 6, the lock mechanism 40 fixes the state where the seal guide arm 17 has advanced into the trajectory of the advance cam 51 just before the seal guide arm 17 exits from the steeping position. In addition, the period immediately before the thread guide arm 17 exits from the sudden death position means a time zone including immediately before the seal guide arm 17 exits from the sudden death position.

In this way, the lock mechanism 40 fixes the state in which the seal guide arm 17 has advanced into the trajectory of the advance cam 51 just before the seal guide arm 17 exits from the steeping position, thereby operating the actuator. In spite of the short operating time, the movement relationship between the upper butt 18 of the seal guide arm 17 and the advance cam 51 can be assured. As a result, the upper butt 18 and the forward cam 51 of the seal guide arm 17 can be brought into contact with the correct timing.

Thereafter, the following process proceeds. That is, as shown in FIG. 7, the lower butt 36a of the seal guide arm 17 holding the spokes is pulled down while contacting the return cam 52. When the return of the seal guide arm 17 is started by the return cam 52, the rear end portion 18a of the upper butt 18 also moves to the right as shown in Fig. 6, so that the flat portion of the lock lever 44 The 46 and the protrusion 45 are released from the rear end 18a to release the lock. Therefore, the lower butt 36 has the seal guide arm 17 returned to the lower butt 36 in relation to the shape of the M-shaped guide hole 29 and the guide rod 27, so that the recessed portion of the end 5 of the M-shaped guide hole 29 is returned. It protrudes below the feeder 1 until the guide rod 27 enters 29a.

When the contact between the return cam 52 and the lower butt 36a is released, in the feeding device 1, the seal guide arm 17 is positioned by the elastic force of the spring 32 so as to position the recess 34. Is pushed upward, and the rear end of the thread guide arm 17 pivots upward because of the fitting of the recess 29a of the M-shaped guide 29 and the guide rod 27, so that the lower butt 36 It enters in 1) and becomes the state shown in FIG.

The side wall 35b of the concave portion 35 of the seal guide arm 17 at the time of retraction of the seal guide arm 17 is the pin of the moving blade 61 which opens the hook 64 protruding forward. 71, and withdraws the hook 64 of the moving blade 61 through the pin 71 with the retraction of the thread guide arm 17. As shown in FIG. With the retraction of the seal guide arm 17 prior to the retraction of the hook 64 of the moving blade 61, the pin 71 of the moving blade and the side wall 35b of the concave portion of the seal guide arm 17 abut and timing. In general, since the position of the guide hole 53 of the thread guide arm 17 and the hook 64 of the moving blade 61 coincide, the thread guided by the guide hole 53 is in the hook 64. The thread is cut by the blade 64 of the moving blade 61 and the blade 63a of the fixed blade 60 by the retraction of the moving blade 61 by the retraction of the thread guide arm 17. At the same time, the thread tip is held in a form sandwiched between the hook 64 of the moving blade 61 and the hook 65 of the thread pressing plate 62.

The following describes the simultaneous knitting of several wales with a knitting resting room and a yarn for newly starting knitting. By the actuator 25 simultaneously operating the swing fingers 26 and 26 against the selector levers 4 and 4 of the old and new companies, the selector levers 4 and 4 of both companies simultaneously move the thread guide arms 17 of both the old and new companies. Even if the lower butts 36 and 36a (36a are shown in Fig. 7) of the 17 and the forward cam 51 in the position preceding in the rotational direction of the knitting machine are first thread guide arms 17 of the new thread. In contact with the lower butt 36, the lower butt 36 is raised along the inclined surface 51a, and when the upper butt of the advance cam 51 is reached, the lower butt 36 is a feeding device. It hides in (1) and does not contact the following return cam 52. Then, since the return cam 52 in the subsequent position acts on the lower butt 36a of the thread guide arm of the yarn which stops the yarn feeding, both yarns are fed by L as shown in Fig. 7.

As described above, in order to transmit the instantaneous operation of the selection device such as the actuator to the thread guide arm in a fixed state through the lock mechanism, the operation of the thread guide arm is ensured, and there is no unnecessary movement. Occurrence of trouble during rotation of the knitting machine is eliminated. In addition, since the movement of the thread guide arm is directly transmitted to the moving blade of the cutter to move the moving blade, it is possible to completely match the operation of the thread guide to the cutting operation of the cutter, and to prepare a mechanism for operating the cutter separately. There is no need.

The steepness value of the present invention, when one of the plurality of seal guide members is advanced into the trajectory of the seal guide arm moving cam by the selection means such as an actuator through the interposition member, the seal guide member falls within the trajectory of the guide arm moving cam. Since the lock mechanism which fixes the advancing state is provided, the seal guide arm selected by operation | movement, such as an actuator which completes an operation | movement instantaneously, can be fixed to a selected state, even after an actuator returns to the original state. This fixed state is the same when starting the new feeding and stopping the feeding.

The feeding device system of the present invention includes a single selection means such as an actuator, and the selector means can circulate between a plurality of feeding devices, so that the selection means such as an actuator even if the number of feeding devices increases. One pair is sufficient, so that not only the mechanism of the knitting machine can be simplified, but also it is advantageous to maintain.

In addition, the moving blade is connected with the movement of the thread guide member, and when the thread guide member is withdrawn from the steeping position, the moving blade is cut by moving the moving blade relative to the fixed blade, so that the moving blade for cutting the thread is moved separately. It has the effect of not having to install a mechanism for this.

Claims (6)

As a feeding device in knitting machines, A plurality of thread guide members, Interposition members such as selectors, When one of the plurality of seal guide members enters the locus of the seal guide arm moving cam by means of a selection means such as an actuator, the seal guide member enters the locus of the seal guide arm moving cam. Feeding apparatus comprising a lock mechanism for fixing the. The method of claim 1, The lock mechanism, A yarn feeding is fixed in a period immediately before the seal guide member advances to the yarn feeding position and a state in which the yarn guide member has advanced in the trajectory of the yarn guide arm moving cam in a period just before the yarn guide position is discharged from the yarn feeding position. Device. The method of claim 1, A thread cutting member having a fixed blade and a moving blade; The moving blade is in connection with the movement of the thread guide member, so that the thread cutting member cuts the yarn supplied by moving the moving blade relative to the fixed blade when the thread guide member is withdrawn from the sudden yarn position. Feature Feeder. As a feeding device system for knitting machines, A plurality of feeders, It is provided with the selection means, such as a single actuator, The steep, A plurality of thread guide members, Interposition members such as selectors, When the one of the plurality of seal guide members passes through the interposition member through the interposition member, the selection means allows the seal guide member to advance into the locus of the seal guide arm movement cam. A feeding device system comprising a lock mechanism for fixing. The method of claim 4, wherein The lock mechanism of the feeding device, A yarn feeding is fixed in a period immediately before the seal guide member advances to the yarn feeding position and a state in which the yarn guide member has advanced into the locus of the yarn guide arm moving cam in a period just before the yarn guide position is discharged from the yarn feeding position. Device system. The method of claim 4, wherein The steep gear is provided with a thread cutting member having a fixed blade and a moving blade, The moving blade is in connection with the movement of the thread guide member, so that the thread cutting member cuts the yarn supplied by moving the moving blade relative to the fixed blade when the thread guide member is withdrawn from the sudden yarn position. Features Feeder System.