JP2008297643A - Yarn feed-switching device in circular knitting machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a yarn feed-switching device in a circular knitting machine, which can reduce the generation of abrasion or the like caused by pressure contact between a finger plate and a slide plate constituting a part of the yarn feed-switching device and can easily be maintained. <P>SOLUTION: A yarn finger-selecting means is made by laminating a plurality of pairs each comprising a thin plate-like slide plate, a finger plate slidably fit to the slide plate and having finger plate pads at both the ends of an arm portion extended in a T-form above the fit portion, a first lock lever, and a second lock lever. Select plates one of which is selected with an actuator are disposed on the yarn finger-selecting means in a state contacted with the finger plate. The finger plate is swung with the selected selector plate. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention provides a plurality of yarn fingers that are provided in a circular knitting machine and guide a yarn to be knitted to a knitting needle, and select one of them to advance to a yarn feeding position or from a yarn feeding position to a standby position. The present invention relates to a yarn feed switching device in a circular knitting machine.

  A conventional yarn feed switching device used in a circular knitting machine has a plurality of yarn fingers (yarn guide arms) when selecting a yarn to be fed, and a desired yarn is selected by the selected yarn finger. Is guided to and held by the knitting needle at the yarn feeding position to perform knitting, and the yarn finger holding the yarn that has been knitted so far is retracted to the standby position to stop the yarn feeding and newly knitting. A plurality of yarn feed switching devices for advancing the yarn to the yarn feeding position and starting the yarn feeding are arranged around the circular knitting machine cylinder.

These yarn feed switching devices have the same number of yarn fingers as the yarn types to hold multiple types of yarns, and advance the yarn fingers to the yarn feeding position, retreat toward the standby position, or fix their positions. Position fixing means is provided for each yarn, and the selection means comprising the yarn fingers and the selector lever for operating the yarn fingers is a thin plate, and they are stacked in a stacked state. (Patent Document 1).
When these selector levers, yarn fingers, etc. are all in the standby state, the bat provided on the upper edge thereof is urged upward by a spring, depending on the type of thread to be used. The selector lever, which is pushed in through the selector bat by the swinging claw of the actuating actuator selected and operated, pulls out the yarn finger by further pushing in the yarn finger and comes into contact with the cam so that the yarn finger is fed into the yarn feeding position. Have advanced to.

  Therefore, in order to advance the yarn finger to the yarn feeding position, it resists the elasticity of the selector lever and the spring that urges the butt of the yarn finger upward, and the swing claw of the actuator is moved to the selector lever. The bat is brought into contact with the bat, the bat is pushed down, the yarn finger is locked so as not to be lifted by the lock member, and at the same time, the yarn finger must be pushed out and brought into contact with the cam. Bats such as selector levers and yarn fingers are severely worn and require regular maintenance.

  In the above configuration, the selector lever bat is pushed in by the actuator and the pushing force is continuously required until the yarn finger is locked, and the lock lever is provided at a fixed position. For this reason, the rotation angle from when the swinging claw of the actuator and the selector lever butt come into contact with each other until the lock is applied is pushed in and the above force is applied.

In addition, in the conventional yarn feed switching device, the fluff is clogged in the machine, causing a malfunction. In order to remove it, there was only a method of removing the apparatus from the circular knitting machine, disassembling and cleaning it, which took a lot of time and labor.
JP 2004-131908 A

  In the present invention, in view of the above points, a pressure contact is generated between a finger plate and a slide plate that constitute a part of a yarn feed switching device including a yarn finger for guiding a yarn used for knitting to a knitting position. The purpose is to prevent the occurrence of wear and the like due to the above. Another object of the yarn feeding switching device of the present invention is to make it possible to easily remove dust such as fluff accumulated in the yarn feeding switching device.

  The yarn feeding switching device in the circular knitting machine according to claim 1 of the present invention is slidably held by the top spacer, and has a fitting portion with a yarn finger on a lower edge and a fitting portion with a finger plate on an upper edge. Each has a thin plate-like slide plate that is fitted to the lower and upper edges of each of the yarn fingers and the finger plate, and is held by the top spacer so as to be swingably fitted to the slide plate. A finger plate having finger plate bats at both ends of the arm portion extending in a T-shape at the upper part of the arm and a second step recess engaged with the slide plate and having a tip protrusion formed on the side edge of the finger plate 1 lock lever, and the tip protrusion that is pivotally supported by the top spacer engages with the two-step recess formed on the lower edge that extends in the transition direction of the slide plate A plurality of sets of the second lock levers are stacked to form a yarn finger selection means, and a plurality of selector plates, one of which is selected by an actuator, are provided in contact with the finger plate on the yarn finger selection means. The finger plate can be swung by the selected selector plate. A yarn feeding switching device in a circular knitting machine according to a second aspect of the present invention includes a finger plate having finger plate bats that come out at both ends of an arm portion extending in a T shape and abut against a cam or a return cam, and the finger plate as an upper edge. A plurality of slide plates that are slidably fitted to each other are stacked to form yarn finger advance / retreat means, and the yarn finger advance / retreat means is in contact with the finger plate, and one of the plurality is selected by an actuator. A selector plate is provided on the top part, and the yarn finger that is fitted to the fitting part provided on the lower edge of the slide plate via a hozo can be slid between the yarn feeding position and the standby position. Provided on the bottom part, between the bearing recess on the top of the rear bracket on the bottom part and the side cover top on the top part. By and the shaft was made to fix the front bracket of the bottom part Shi with to be able to hinge removed the top part and a bottom part to the circular knitting machine frame, so that can be removed to open the top part at the time of cleaning.

  In the present invention, it is slidably held by the top spacer, has a fitting portion with the yarn finger on the lower edge, and a fitting portion with the finger plate on the upper edge, respectively. A thin plate-like slide plate that is fitted to the lower edge and the upper edge respectively, and is fitted to the slide plate so as to be swingable by being held by the top spacer. A finger plate having a finger plate butt, a first lock lever pivotally attached to a slide plate and having a tip protrusion formed on a side edge of the finger plate and engaged with a two-step recess, and pivotally supported by a top spacer And a first lock lever engaged with a two-stage recess formed on the lower edge extending in the transition direction of the slide plate. Since the yarn finger selection means is configured, when a predetermined selection is made by the selector plate by pressing by the actuator, the finger plate and the slide plate are simultaneously fitted by the first lock lever. There is no pressure that causes friction between them.

  In the device of the present invention, the finger plate is swung by the pressing of the selector plate selected by the actuator, the finger plate butt is taken out and protruded into the cam travel locus. The reluctance is prevented by locking the lock lever, and no force is applied to the finger plate itself so as to turn or swing in a specific direction. Therefore, in order to displace the finger plate itself, there is a force for releasing the locking of the first lock lever fitted in the recess of the finger plate, that is, a force required for the protrusion of the lock lever to be retracted from the recess. The force is extremely small as compared with the conventional device in which the member is directly pushed out using a conventional highly elastic spring. Similarly, the slide plate can be fixedly held at a predetermined position by locking the second lock lever.

Accordingly, in the device of the present invention, since there is no force acting on the slide plate, finger plate, etc. in a specific direction when in the standby state, the slide plate, finger plate, etc. Therefore, even if they are pressed by the selector plate to move them, there is no urging force against the pressing force, so that wear does not occur between these members.
Furthermore, in the invention according to claim 2, the bottom portion and the top portion can be easily opened and closed and the top portion can be easily attached and detached while the bottom portion is fixed to the circular knitting machine with the front bracket 60. It is possible to remove the fluff that accumulates on the top, and since the bottom part is fixed to the circular knitting machine with the front bracket by attaching and detaching the top part, the mounting position relationship between the output cam, the return cam and the actuator No need to make any adjustments.

Embodiments of the present invention will now be described with reference to the drawings.
1A is a side view of the device of the present invention, B is a front view thereof, FIG. 2 is a side view of the device of the present invention with the side cover removed, and FIG. 3 is a state of the device of the present invention with the top spacer and finger spacer removed. It is a side view.

The yarn feeding switching device 1 of the present invention includes a top part 3 having a yarn finger selection means 2 and a bottom part 5 that supports the yarn finger 4.
The top part 3 is an elongated plate-like slide plate 6 and a finger plate which is provided on the upper edge 7 of the slide plate 6 and is fitted to a U-shaped fitting portion 8 and a hozo 9 is slidably supported on the slide plate 6. 10.
The finger plate 10 has an arm portion extending in a T shape on the upper portion of the ridge 9, and has finger plate bats 11a and 11b at both ends thereof, and one finger plate butt 11b is vertically extended to an extended side edge 12 extending downward. Two concave portions 13a and 13b are provided. The tip protrusion 15 of the first lock lever 14 is engaged with one of the recesses 13a and 13b.

  The first lock lever 14 is pivotally attached to an end fitting portion 16 of the slide plate 6 described later, and a spring 17 is stretched between the finger plate 10 at the top, and the first lock lever 14 is The tip protrusion 15 is fitted into the recess 13 a or 13 b of the finger plate 10.

  As described above, the slide plate 6 is formed in an elongated plate shape, has a guide groove 18 in the center, and spans between the side cover tops 19 and 19 that are inserted into the guide groove 18 and provided on both side surfaces of the top part 3. The passing shafts 20 and 20 are passed through the guide grooves 18 to be guided by the shafts 20 and 20 so as to be movable left and right in FIG. The lower edge of the slide plate 6 is provided with two recesses 21a and 21b at intervals, and the protrusion 24 of the second lock lever 23 which is pivotally supported by the top spacer 22 and has an L shape is connected to the spring 25. Is biased and engaged. Further, a fitting portion 26 with the U-shaped yarn finger 4 is provided at the lower edge of the slide plate 6. In the illustrated example, the slide plate 6 and the finger plate 10 combined with the slide plate 6 are laminated together with top spacers 22 sandwiched between both sides and between them, and both sides are covered with side cover tops 19 and 19. .

In addition, an actuator 30 for selecting the finger plate 10 is provided above the finger plate 10 of the top part 3 at the lower part of the upper disk rotating synchronously with the circular knitting machine cylinder.
The actuator 30 has the number of swinging pawls 31 corresponding to the number of types of knitting yarns to be selected (three in the illustrated example), and swings the swinging pawls 31 corresponding to a predetermined yarn. The claw 31 is brought into contact with the selector butt 33a of the selector plate 33 of the selector block 32 provided below the actuator 30, so that the selector plate 33 is pushed down.

  The selector block 32 supports a predetermined number (three in the illustrated example) of selector plates 33 in parallel at equal intervals and slidably up and down. A selector bat 33 a whose position is changed is provided on the upper edge of each selector plate 33, and each of the selector bats 33 a corresponds to the swinging claw 31 of the actuator 30 provided above the selector plate 33. When the swinging claw 31 comes into contact with the selector butt 33a by the rotation of the circular knitting machine with the swinging claw 31 swinging, the selector plate 33 is selected and pushed down in the selector block 32. Become. A long groove 33b is provided in the central longitudinal direction of the selector plate 33, and a shaft 33c supported at both ends by the selector block 32 is inserted into the long groove 33b. The selector plate 33 is guided by the shaft 33c and passes through the selector block 32. Slide up and down. Protrusions 33d are provided at both ends of the lower edge of the selector plate 33. When the selector plate 33 is pushed in by the actuator 30, the upper edge of the finger plate 10 and the protrusion 33d come into contact with each other to swing the finger plate 10. .

The position of contact with the finger plate butt 11a protruding when the finger plate 10 swings is provided at the lower part of the upper support 80 that rotates synchronously with the circular knitting machine cylinder, and the protruding cam 34 is connected to the protruding finger plate. A return cam 35 is provided at a position in contact with the bat 11b. The take-out cam 34, the return cam 35, and the actuator 30 are supported by the support body 80 shown in FIG. 8, and the support body 80 rotates in the counterclockwise direction around the rotation center C according to the rotation of the circular knitting machine. The cam 34 comes into contact with the butt 11a of the finger plate 10 of the yarn to be newly fed, and the return cam 35 then comes into contact with the butt 11b of the finger plate 10 of the yarn that has been fed so far. Is slid to the yarn feeding position or the standby position.
The yarn fingers 4 form an elongated plate-like body. In the illustrated example, three yarn fingers 4 are slidably supported between the side cover bottoms 42 and 42 by finger spacers 40 and bottom spacers 41. The yarn finger 4 has a straight elongated hole 43 and a V-shaped elongated hole 44, and pins 45 and 46 provided between the side bottom covers 42 and 42 are inserted into the holes 43 and 44. 4 allows the yarn introduction hole 47 provided at the lower end of the tip to move to the yarn feeding position. A protruding tenon 48 is provided on the upper edge of the yarn finger 4. The hozo 48 is fitted in a fitting portion 26 with an inverted U-shaped yarn finger provided on the lower edge of the slide plate 6, and the yarn finger 4 can also reciprocate according to the left and right reciprocation of the slide plate 6. Yes.

  A yarn end cutting holding member 49 that cuts and holds the yarn end in conjunction with the movement of the yarn finger 4 is supported by the holder 50 and the scissor block 55 between the yarn fingers 4 arranged in parallel in the stacked state. As shown in FIG. 4, the thread end cutting holding member 49 includes a thin fixed blade 51, a moving blade 52, a yarn catch plate 53, and a thread retainer 54, as shown in FIG. Next, the yarn catch plate 53 is arranged so that the thread retainer 54 is positioned next. Blade portions 51 a and 52 a are provided at the leading edge of the fixed blade 51 and the inner edge of the hook portion opened upward from the moving blade 52. A shaft 56 is passed through a circular hole 51b, 53b provided in each of the fixed blade 51 and the yarn catch plate 53 with a scissor block 55 interposed, and a shaft 57 is inserted into the hole 51c of the fixed blade 51 and the hole 53c of the yarn catch plate 53. The shaft 57 is supported at both ends by both side cover bottoms 42, so that the fixed blade 51 yarn catch plate 53 is supported and fixed to the bottom part 5 in an immobile state. At this time, the shaft 57 passes through the fixed blade 51 and the holes 51c and 53c of the yarn catch plate 53 and is also passed through the long hole 52c of the moving blade 52 and the long hole 54c of the thread retainer 54. Both can move left and right by the length of the long holes 52c, 54c.

  A concave fitting portion 52 d is formed on the upper edge of the moving blade 52, and a concave fitting portion 54 d is formed on the upper edge of the thread retainer 54. A protrusion 58 provided on the lower edge of the yarn finger 4 is located in the recessed fitting portions 52d and 54d, and the protruding portion 58 is a side wall of the recessed fitting portion 52d of the moving blade 52 when the yarn finger 4 slides. 52f or 52g and the side wall 54f or 54g of the recessed fitting portion 54d of the thread presser 54 are brought into contact with each other, and the moving blade 52 and the thread presser 54 are slid leftward or rightward in FIG.

  The bottom part 5 has a front bracket 60 at the front part between the side cover bottoms 42, 42 and a rear bracket 61 at the rear part to form one block body, and the top part 3 can be detached from the bottom part 5. It is hinged. That is, the bearing portion 62 is provided at the top of the rear bracket 61 of the bottom part 5 so that the opening direction is 45 ° from the vertical and the front bracket 60 is inclined at an angle of 90 °. A shaft 63 narrower than the opening of the bearing recess 62, which is passed between the side cover tops 19, 19 of the top part 3, is detachably fitted in the shaft receiving recess 62. At the time of the above removal, the top part 3 is pivoted in the clockwise direction in FIG. 3 so that the front bracket 60 and the top part 3 are separated from each other, and then the shaft 63 is pulled out in the inclined opening direction.

  A lock member 70 that locks the top part 3 and the bottom part 5 is provided below the swing end of the top part 3. The lock member 70 is provided in the side cover top 19. Reference numeral 71 denotes an inverted U-shaped substrate having a locking bar 72 at one end and a guide bar 73 at the other end. A fixing bar 74 is fitted between the two bars 72 and 73 in a long hole 75 provided in a U-shaped bent edge portion of the substrate 71. The fixing bar 74 is fixed to the side cover top. Both ends of the locking bar 72 and the guide bar 73 are slidably fitted in the long holes 76 and 77 of the side cover top 19. A spring 78 is passed between the fixed bar 74 and the guide bar 73, and the locking bar 72 of the lock member 70 is always urged to protrude toward the front bracket 60 side. The protruding locking bar 72 is locked to a hook 79 provided on the front bracket 60 of the bottom part 5 so that the top part 3 and the bottom part 5 are fixed. When the fixing is released, the locking bar 72 is removed from the hook 79 against the spring 78 and the top part 3 is swung.

Next, the operation of the present yarn feeding switching device will be described.
When the yarn fingers 4 of the yarn feeding switching device 1 are in the standby position, all the yarn fingers 4 have the yarn introduction holes 47 retracted as shown in FIGS. When one of the yarn fingers 4 is selected and is to be positioned at the yarn feeding position, the swinging claw 31 of the actuator 30 corresponding to the yarn finger 4 is operated. For example, when the first yarn finger 4 in FIG. 3 is operated, the swinging claw 31a of the actuator 30 is swung and the swinging claw 31a and the butt 33a of the selector plate 33 are brought into contact with each other by the rotation of the circular knitting machine. The selector plate 33 is pushed in, the protrusion 33d at the lower edge of the selector plate 33 is pressed against the finger plate 10, and the finger plate 10 is pivoted in the counterclockwise direction in FIG. . By this movement, the finger plate butt 11a contacts the take-out cam 34, and the finger plate 10 is moved in the left direction in FIG.

  When the finger plate 10 is pushed by the selector plate 33, the tip protrusion 15 of the first lock lever 14 engaged with the recess 13b at the lower position of the side edge of the finger plate 10 is the recess 13a at the higher position. Will be engaged. The force required for turning the finger plate 10 that switches from the lower recessed portion 13b to the other recessed portion 13a is when the tip protrusion 15 of the first lock lever 14 comes out from the recessed portion 13b against the tensile force of the spring 17. Only the force corresponding to the resistance force is required. When the protrusion 15 that has escaped from the recess 13b engages with the second recess 13a, the protrusion 15 falls into the recess 13a due to the tensile force of the spring. There is no strong contact pressure between the members. Therefore, generation of strong contact pressure between members is prevented.

By the left row of the finger plate 10, the slide plate 6 integrated with the finger plate 10 is also left. At this time, as shown in FIG. 3, the slide plate 6 has a concave portion 21 a at the left position provided at the lower edge thereof engaged with the second lock lever 23. The second lock lever 23 engages with the concave portion 21b at the right position, determines the stop position of the slide plate 6 and stops, overruns due to the inertia of the lateral action, rebounds by the reaction, and improper position There is no such thing as stopping.
By the left row of the slide plate 6, the yarn finger 4 in which the hoso 48 is fitted to the fitting portion 26 provided at the lower edge of the slide plate 6 is moved to the pin 45, by the left row of the slide plate 6. Turn left while being guided by 46.

  In the standby state in FIG. 3, the yarn Y reaches the yarn introduction hole 47 of the yarn finger 4 from the yarn guide 64, and the fixed blade 51, the moving blade 52, and the yarn catch plate 53 provided adjacent to the yarn finger 4. , And is secured by a thread end cutting and holding member 49 comprising a thread retainer 54 and the like. At this time, both the moving blade 52 and the thread retainer 54 are drawn into the positions closest to the right in FIG. 3 by the protrusions 58 of the yarn fingers 4 together with the recessed fitting side walls 52g and 54g shown in FIG. And the thread retainer 54 is in a state where its pointed head is retracted with respect to the needle N.

  However, when the yarn finger 4 moves to the left due to the left movement of the slide plate 6 in FIG. 3, the yarn introduction hole 47 guides the yarn Y to the yarn feeding position, and the protrusion 58 of the yarn finger 4 is delayed to the moving blade 52. Of the concave fitting portion 52d of the thread and the side wall 54f of the concave fitting portion 54d of the thread retainer 54, the moving blade 52 and the thread retainer 54 are both moved left, and the yarn end nipped between the leading end hooks 52h and 54h is opened. To do.

  When stopping the supply of the yarn Y currently being supplied and returning it to the standby position, the selector bat 33a is hit by the swinging claw 31 of the actuator 30 corresponding to the yarn Y, and the selector plate 33 is moved to the finger plate 10 Hit. At this time, the finger plate 10 is moved to the left in FIG. 3 and protrudes from the bat 11a. However, the bat 11b protrudes and the bat 11a is submerged by the above-described hitting. It contacts the return cam 35 and turns right as shown in FIG. 3 by the rotation of the circular knitting machine. By the right row, the finger plate 10, the ride plate 6, and the yarn finger 4 all move right, and the yarn finger 4 returns the yarn introduction hole 47 to the standby position shown in FIG. It will be cut and held.

  When the slide plate 6 moves left and right, the slide plate 6 engages the protrusion of the second lock lever 23 with the left and right recesses 21a and 21b. The engagement is restricted by the elastic force of the spring 25. This is effective in preventing the detachment of each member with the most suitable braking force like the first lock lever 14.

  In the device of the present invention, when both ends of a shaft or the like are inserted and supported on both side cover bottoms or both side tops, a triangular or T-shaped thin shaft cover 80 is attached to the side to prevent the shaft from falling off. It is placed on the cover to prevent the shaft from moving.

A is a side view of the device of the present invention, and B is a front view thereof. The side view of the state which removed the side cover of this invention apparatus. The side view of the stand-by state which removed the top spacer and finger spacer of this invention apparatus. The side view of the yarn supply state which removed the top spacer and finger spacer of this invention apparatus. 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 yarn catch plate, and D is a thread presser side view. The side view of a side cover bottom. The side view of a side cover top. The side view of a top spacer. The position figure of a cam and an actuator. Opening and closing view of the top part and the bottom part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Yarn feed switching device 2 Yarn finger selection means 4 Yarn finger 6 Slide plate 8 Fitting part with finger plate 10 Finger plate 11a, 11b Finger plate butt 12 Side edge 13a, 13b Recess of finger plate 14 First lock lever 21a, 21b Recess 22 Top spacer 23 Second lock lever 24 Projection (of the second lock lever)
26 Fitting part with yarn finger 30 Actuator 33 Selector plate

Claims (2)

  It is slidably held by the top spacer, has a fitting part with the yarn finger on the lower edge, and a fitting part with the finger plate on the upper edge, and each of the finger and finger plate on the lower edge and the upper edge A thin plate-like slide plate that is fitted, and a finger plate that is held by the top spacer and is slidably fitted to the slide plate, and has finger plate bats at both ends of the arm portion extending in a T shape at the upper part of the fitting portion A first lock lever that is pivotally attached to the slide plate and is engaged with a two-step recess formed by forming a tip protrusion on the side edge of the finger plate, and a tip protrusion that is pivotally supported by a top spacer. A plurality of pairs of second lock levers engaged with a two-step recess formed on the lower edge extending in the transition direction of It is possible to swing and move the finger plate with the selected selector plate as the nger advance / retreat means. The yarn finger advance / retreat means is provided with a plurality of selector plates, one of which is selected by the actuator, in contact with the finger plate. A yarn feed switching device in a circular knitting machine.   A plurality of sets of finger plates having finger plate bats that come into contact with the cams or return cams at both ends of an arm portion extending in a T shape, and slide plates that are swingably fitted to the upper edges of the finger plates The yarn finger advance / retreat means is provided on the top part of the yarn finger advance / retreat means and a plurality of selector plates, one of which is selected by an actuator in contact with the finger plate, and provided on the lower edge of the slide plate. Yarn fingers that are fitted to the fitting part via hoses are provided on the bottom part so as to be slidable between the yarn feeding position and the standby position, and the bearing recess provided on the top of the rear bracket of the bottom part And the shaft passed between the top covers of the top part to remove the top part and the bottom part. Capable yarn feeding switching device in a circular knitting machine, characterized in that the front bracket of the hinge with Shi bottom part fixed to the circular knitting machine frame.

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