JP2008095239A - Yarn feeder in knitting machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a yarn feeder having a multiple number of scissors, starting new yarn feeding by rocking selected scissors among them, capable of performing the change in the yarn-feeding without causing any trouble between the new and old yarns with each other when the scissors performing the yarn-feeding keep waiting postures, and capable of easily performing the maintenance of the inside of the yarn feeder. <P>SOLUTION: This yarn feeder has a scissors rock-operating system device consisting of a scissors-selecting means and scissors-rocking means, and a scissors open and close-operating system device consisting of a scissors-opening and closing means-operating means and a scissors-opening and closing means, installing the scissors-selecting means and scissors-opening and closing means-operating means at its top part, and the scissors-rocking means and scissors-opening and closing means at its bottom part, also the scissors-selecting means and scissors-opening and closing means-operating means at the top part, and the scissors, scissors-rocking means and scissors-opening and closing means at the bottom part, respectively and pivoting/supporting the bottom part at the lower part of the top part. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

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

  Generally in circular knitting machines, unit yarn feeders are arranged at multiple positions on the outer periphery of the cylinder that supports the needle, and each unit yarn feeder holds multiple scissors, depending on the pattern of the knitted fabric to be knitted appropriately Thus, a predetermined yarn is fed by switching the scissors of the unit yarn feeder.

  The selected scissor swings and holds the yarn to be held to the knitting position, opens the holding and feeds the yarn to start knitting, and the yarn that has finished knitting causes the scissors that have come out to the knitting position to disengage the yarn. When the knitting yarn is switched, if the new and old yarns are not released and held at the same time, switching to the standby position may cause troubles such as undelivered yarns.

Further, the unit yarn feeder that holds the plurality of yarns to be switched is provided close to the outer peripheral surface of the knitting machine cylinder or the upper part thereof, and the inside of each unit yarn feeding device holds the plurality of yarns to be fed. The cams, levers, plates, etc. to be guided are set in a laminated state, and it is also a place where much dust is generated due to the handling of the thread. To remove the dust, the air is blown with strong air. Although the work is being performed, the inside of the yarn feeding device could not be cleaned directly (see Patent Document 1).
JP 2004-131908 A

  In the present invention, in view of the above points, the unit yarn feeder has a plurality of scissors, and the selected scissors oscillates to start feeding new yarns, When returning to the standby position, the yarn feed can be changed without seeing the trouble between the old and new yarns, and the inside of the yarn feeder can be easily maintained. It is possible to open the inner surface of the device.

The yarn feeding device in the knitting machine according to claim 1 includes a scissor swing operation system device comprising a scissor selection means and a scissor swing means, and a scissor opening / closing operation system device comprising a scissor opening / closing means operating means and a scissor opening / closing means. It was supposed to have.
The yarn feeding device in the knitting machine according to claim 2 is provided with the scissors selection means and the scissors opening / closing means operating means in the top part, and the scissors swinging means and the scissors opening / closing means in the bottom part. Yes.
The yarn feeding device in the knitting machine according to claim 3, wherein the scissor selection means and the scissor opening / closing means operating means are provided on the top part, the scissors, the scissors swinging means, and the scissor opening / closing means are provided on the bottom part, respectively. I support the part pivotally.
According to a fourth aspect of the present invention, there is provided the yarn feeding device in the knitting machine, wherein the connection between the scissor selection means and the scissor swinging means in the device according to the third aspect is connected to a bag-like recess provided on the slide plate of the scissor selection device. This is done by inserting the tip of the coupling arm of the swinging means.

  The present invention has a plurality of scissors, and a drive system that should perform a rocking motion of the scissors when one of the selected scissors rocks and releases the yarn at the yarn feeding position. In order to perform the scissors swinging motion and the yarn cutting and holding operation by two drive systems, which should perform the yarn cutting and holding operation performed at a predetermined timing during the movement, The timing can be accurately taken, and the occurrence of yarn troubles at the time of yarn switching can be prevented.

  Further, the yarn feeding device of the present invention is provided with a selection means for selecting a scissors for guiding the yarn to be fed on the top part, a scissors, a scissor swinging means, a scissor opening / closing means are provided on the bottom part, Since the inner surface of the bottom part can be appropriately opened by pivotally attaching the bottom part, maintenance and the like inside the yarn feeding device can be easily performed.

Embodiments of the present invention will now be described with reference to the drawings.
FIG. 1 is a side view of the yarn feeding device 1 of the present invention, and FIG. 2 is a front view thereof. The yarn feeder 1 shown in FIG. 1 shows a state where the top side plate 2a and the bottom side plate 2b on one side thereof are removed. The cylinder needle 3 shown in the lower part of the yarn feeding device 1 represents one cylinder needle row, and the needle row extends in a ring shape in a direction perpendicular to the drawing sheet. The dial hands are omitted.

  The yarn feeding device 1 according to the present invention includes a top part 4 and a bottom part 5 each having a scissor selection means 100 for selecting a scissor for guiding a yarn to be fed. The bottom part 5 holds a selected yarn and holds a needle. 3 and the scissor opening / closing means operating means 400, the scissor opening / closing means operating means 400, the scissor opening / closing means 500, etc., and the bottom part 5 of the yarn supplying apparatus 1 are opened to facilitate maintenance inside the yarn supplying apparatus 1. And an open fixing means 600. The top part 4 is provided with a front side plate 2a on both sides of a front bracket 6 provided on the front side of the machine base and a rear bracket 7 provided in a pair with the front bracket 6, and the scissors selection means 100 is disposed therein. . The bottom part 5 has a predetermined interval between shafts 9, 9... Provided between the two bottom side plates 2b at appropriate positions, and the scissors 200, the scissor swinging means 300, and the scissor opening / closing of the thread holding guide means therebetween. Means 500 Bottom part opening fixing means 600 is arranged. The bottom part 5 is pivotally supported by the front bracket 6 of the top part 4 so as to be swingable by a shaft 10.

  In the illustrated example of the yarn feeding device 1 of the present invention, the types (numbers) of yarns to be fed are six types (six). Accordingly, there are six sets of unit bodies constituting each means such as the scissor selection means 100, the scissor 200 of the thread holding guide means, and the scissor swing means 300, but the scissor opening means operating means 400 and the scissor opening / closing means 500 are provided. Since each unit is common, one set is used. A plurality of yarn feeding devices 1 are provided in a ring shape above the cylinder needle row.

The top part 4 will be described.
The top part 4 is attached to the circular knitting machine frame 11 by a front bracket 6 and a rear bracket 7. An actuator 12 is provided above the top part 4 so as to rotate in synchronization with a cylinder (not shown) that supports the cylinder needle 3.
The actuator 12 has a number of swinging claws 13 corresponding to the number of types of knitting yarns to be selected. By swinging the swinging claws 13 corresponding to a predetermined yarn, the actuators 13 are moved to the actuators. 12 is in contact with the selector butt 14b of the selector plate 14a of the selector 14 which is provided in the lower part of the twelve and constitutes the thread selecting means together with the actuator 12, and pushes down the selector plate 14a.

The selector 14 supports a predetermined number of selector plates 14a (six in this embodiment) in parallel with a selector guide 14c at equal intervals and slidably up and down. The selector 14 will be described in detail. A selector bat 14b whose position is changed is provided on the upper edge of each selector plate 14a. Each of the bats 14b is a swinging claw 13 of the actuator 12 provided above the selector 14. It corresponds to. Then, when the swinging claw 13 comes into contact with the selector butt 14 by the rotation of the knitting machine under the swinging state of the swinging claw 13, the selector 14 is selected and pushed down the selector guide 14c. Protrusions 14d are provided at both ends of the lower edge of the selector plate 14a.
The protrusion 14d is supported so as to protrude downward from a slit 8a provided in a top cover 8 covering the space between the front bracket 6 and the rear bracket 7 and spaced at an interval equal to the interval of the selector plate 14a. ing.

  The finger plate 15 (shown in detail in FIG. 7) is placed in a parallel state at equal intervals by the separator 52 in the same position as the selector plate 14a at the position below the selector 14 in contact with each selector plate 14a. It is provided so that it can be done. The finger plate 15 has finger plate butts 15 a and 15 b protruding from both upper ends, and the finger plate bats 15 a and 15 b can protrude out of the top cover 8 from the slits 8 a of the top cover 8. The finger plate 15 is provided with a pair of left and right elongated holes 15c extending in the lateral direction in two upper and lower tiers, and a guide plate-like body 15d is projected downward on one side edge of the lower edge, and on the other side edge. Has two recessed portions 15e and 15f for positioning in the vertical direction. The finger plate 15 is provided with a slide plate 50 in close contact with its side surface, and both are pivotally attached by pins 51. An inverted U-shaped recessed portion 50b is pivotally attached to the protruding portion 50a provided on the lower end edge of the slide plate 50, and a claw member 50c having a lower end edge as a fulcrum is pivotally attached to the lower end edge of the other side. The claw member 50c is fitted into the positioning recess 15e or 15f of the finger plate 15 and fixes the positions of the finger plate 15 and the slide plate 50. A spring 50d is stretched between the claw member 50c and the finger plate 15.

  As described above, a set of slide plates 50 and finger plates 15 pivotally attached by the overlapping pins 51 are divided into a plurality of sets (six sets in this embodiment) separators 52 to form the block-like scissors selection means 100. The scissor selection means 100 is connected to the scissor swing means 300 as follows.

  In the scissors selection means 100, the overlapping slide plate 50 and finger plate 15 are such that the protrusion 50a of the slide plate 50 and the guide plate 15d of the finger plate 15 are in contact with each other. Is overlapped with the slide plate 50, the slide plate 50 is sandwiched between the finger plate 15 and the separator 52, and the U-shaped recessed portion 50b of the projecting portion 50a of the slide plate 50 is disposed on both sides of the separator 52 and the finger foot. The bag is closed with the guide plate 15d of the rate 15, and the tip of the coupling arm 34 of the scissor rocking means 300 is inserted into the recessed portion 50b. The selection means 100 is a scissor rocking means. Slide plate 50 of the connection by scissors selection means 100, the movement of the lateral behavior of the finger plate 15 can be transmitted to the scissor rocking means 300.

A pin 15g is passed through each of the long hole 15c in the lower part of the finger plate 15 and the long hole 50c of the slide plate 50 to serve as a guide member.
When the finger plate bats 15a and 15b protrude from the slits 8a of the top cover 8, the reset cam 17 is located at a position where the finger plate butt 15a comes into contact with the finger plate butt 15a, and the down cam 18 is placed at a position where the finger plate bat 15b comes into contact with the finger plate bat 15b. It is provided by the same means.
Further, the top part 4 is provided with a solenoid 22 for operating the control lever 21 for operating the scissor opening / closing means 400 provided in the bottom part 5 described later.

  Each of the bottom parts 5 holds a yarn, and a selected one of them swings and a plurality of scissors 200 for supplying a knitting yarn to a knitting needle and each of the scissors 200 are individually swung. A plurality of scissor swinging means 300, a scissor opening / closing means operating means 400, a scissor opening / closing means 500, and a bottom part opening / fixing means 600 capable of fixing the inside of the bottom part 5 in an open state for maintenance. have.

The scissors 200 will be described. The scissors 200 are formed with a recessed portion at the tip portion of the prismatic fixed blade 35 to form a thread path 37, and a thread presser plate 38 and a plate that presses the plate 38 against the fixed blade 35 on the upper surface of the fixed blade 35. The movable blade 36 is stacked on the lower surface of the fixed blade 35, and the movable blade 36, the thread presser foot rate 38, and the leaf spring 39 are supported so as to be slidable with respect to the fixed blade 35. . The movable blade 36 projects a small arm 41 on both sides of the head opposite to the blade edge 40 to form a T shape in side view, and an upward concave portion 41a and a downward concave portion 41b are formed at the end of the small arm 41, respectively. Yes.
When the scissor 200 is in the standby position, the movable blade 36 and the thread presser plate 38 advance relative to the fixed blade 35 to cut the thread end and nip the thread end between the fixed blade 35 head and the thread retainer plate 38. keeping.
The scissors 200 are supported by a scissor plate 32 of a scissor rocking means 300 described later.

  The scissor rocking means 300 will be described. A plurality of (six in this embodiment) scissor plates 32 serving as the scissors rocking means 300 are arranged on the shaft 31 provided between the side plates 2a, 2a of the bottom part 5 in the counterclockwise direction in FIG. It is urged to turn and is supported in a swingable manner. A scissor 200 is provided on a first arm 32 a that extends below the scissor plate 32. A coupling arm 34 pivotally supported by a shaft 34 a is pivotally attached to a second arm 32 b extending above the scissor plate 32. The distal end portion of the coupling arm 34 has a disc shape, and is inserted and fitted into a bag-like recessed portion 50 b formed in the slide plate 50 of the scissor selection means 100 of the top part 4. Therefore, the coupling arm 34 swings in accordance with the left-right movement of the slide plate 50, and the scissor plate 32 connected thereto reciprocally swings. The scissor 200 supported by the first arm 32a of the scissor plate 32 is also reciprocated. Swings between the standby position and the yarn feeding position.

  The tip of the coupling arm 34 is inserted into the recessed portion 50d of the slide plate 50 when the gap between the top part 4 and the bottom part 5 is opened. Since the connection with the scissor rocking means 300 of Part 5 can be easily performed, when connecting the both, it is only necessary to insert the tip of the coupling arm 34 into the recessed portion 50d, and the connection between the two is established. To unwind, simply pull out the coupling arm.

The scissor opening / closing means 500 for operating the movable blade 36 of the scissor 200 is configured as follows.
A control block 55 having an inverted U-shaped cross section is supported above the scissor plate 32 so as to be swingable by a shaft 56, and four control arms 55a, 55a, 55b, 55b are suspended from four corners of the control block 55. The intervals between the control arms 55a and 55a and the intervals between the arms 55b and 55b are larger than the interval between the plurality of scissors plates 32 arranged side by side, and hang down outside the scissors plates 32 arranged side by side. A bar 55c is provided between the lower ends of the control arms 55a and 55a, and a bar 55d is provided between the lower ends of the control arms 55b and 55b. The control block 55 is provided with a spring 57 and urged to turn counterclockwise in FIG. The long holes 55e and 55f for restricting the movement of the bars 55c and 55d that move up and down according to the movement of the control block up and down when the control block 55 swings are provided in both side plates 2a, and the long holes 55e and 55f and the bar 55c are provided. , 55d are engaged, and a bar 55c descending in the long hole 55e is fitted into the concave portion 41a opened upward of the small arm 41 of the movable blade 36 of the scissor 200, and the movable blade 36 is pushed down to The bar 55d that rises in 55f is fitted into the concave portion 41b that opens downward of the small arm 41 of the movable blade 36 of the scissors 200, and the movable blade 36 is pulled up.

  A control plate 58 is pivotally supported on the control block 55 vertically upward. The top 58 a of the control plate 58 is provided in the top part 4 and is in contact with the control lever 21 that constitutes the scissor opening / closing means operating means 400 together with the solenoid 22. The control lever 21 is supported so as to be vertically movable, and a solenoid 22 is supported and positioned above the control lever 21 in the same manner as the actuator 12, the reset cam 17, and the down cam 18. Since the control lever 21 is pushed down, the movement is transmitted to the control plate 58, and the control block 55 pivots in the clockwise direction in FIG.

The bottom part turning fixing means 600 will be described. The bottom part turning fixing means 600 is a means for fixing the position of the bottom part 5 in an opened state during maintenance of the bottom part, etc., and a lock member 61 that locks the bottom part 5 in a normal use state and an opening. It comprises an open position fixing member 62 for fixing the state.
The lock member 61 is composed of a pair of parallel latch levers 63 slidably provided in the width direction at the upper part of the bottom part 5, and the levers 63 are connected to each other by pins 64 and 65 at both ends, and are formed into a rectangular frame. Is configured. The pins 64 and 65 are slidably fitted in horizontally elongated holes 66 and 67 provided in the bottom side plate 2 b of the bottom part 5. The pin 65 is provided with a spring 68 so that the latch lever 63 is always urged to move leftward in FIG. The pin 64 at the left end (in FIG. 1) of the latch lever 63 is normally engaged with a flange 69 extending downward from the rear bracket 7 of the top part 4. And when the said collar part 69 and the pin 64 remove | deviate, the bottom part 5 will turn in the anticlockwise hand direction in FIG. 1 centering on the shaft 10 which pivotally supports the bottom part 5 and the top part 4. Become.

  An example in which the turning position can be fixed at two places during the turning is shown in FIGS. The stay 72 of the stop position fixing member 62 is suspended by a shaft 71 provided at a portion where the top side plate 2a protrudes toward the bottom side plate 2b. The stay 72 has a guide groove 73 extending in the center, and a pin 74 provided on the side plate 2b of the bottom part 5 is slidably fitted in the guide groove 73. The guide groove 73 is provided with concave portions 75 and 76 at the center portion and the end portion, and when the pin 74 is fitted into the concave portion 76 at the end portion, the bottom part 5 is opened and fixed at 90 ° and is fixed to the central concave portion 75. When fitted, the bottom part 5 opens 45 degrees and is fixed.

Next, the operation of the device of the present invention will be described.
When the scissors 200 of the yarn feeding device 1 are in the standby position, as shown in FIG. 1, all the scissors 200 raise the yarn path 37 cutting edge 40 portion. When one of them is selected to swing to the yarn feeding position, the swinging claw 13 of the actuator 12 corresponding to the scissor 200 is operated. In the example shown in FIG. 3, the swinging claw 13 of the leftmost actuator is swung and brought into contact with the selector butt 14b by rotating the knitting machine to push the selector butt 14b. Is pressed against the finger plate 15, and the finger plate 15 is swung counterclockwise about the pin 51 to project the finger plate butt 15b. By this movement, the finger plate butt 15b comes into contact with the rotating down cam 18 and is moved to the left in FIG. 3 by the cam and takes the position shown in FIG.

  The left side of the finger plate 15 causes the slide plate 50 integrated with the finger plate 15 to also go to the left, so that the tip head is fitted to the bag-like recess 50b provided at the lower edge of the slide plate 50. The coupling arm 34 is turned in the counterclockwise direction around the shaft 34 a, and the scissor plate 32 connected to the coupling arm 34 is also turned in the clockwise direction around the shaft 31. By this movement, the scissors 200 supported by the first arm 32a of the scissor plate 32 become the yarn feeding position oriented in the vertical direction as shown in FIG. The above-described operation is the movement of the scissor oscillating operation system device including the scissor selecting means 100 and the scissor oscillating means 300.

  Next, the operation of the scissor opening / closing operation system apparatus including the scissor opening / closing means 500 and the scissor opening / closing means operating means 400 will be described. The solenoid 22 is operated in synchronization with the swinging of the scissors 200 to the yarn feeding position, the control plate 58 is pushed down via the control lever 21, and the control block 55 is turned around the shaft 56 in the clockwise direction. At this time, the scissors 200 are in the yarn feeding position as shown in FIG. 4, but the recess 41b of the arm 41 of the movable blade 36 of the scissor 200 and the bar 55d at the tip of the control arm 55b hanging from the control block 55 are provided. The movable blade 36 is pulled up as the control block 55 moves in the clockwise direction. The upward movement of the movable blade 36 and the upward movement of the thread presser plate 38 and the thread spring 39 are performed integrally, and the thread nipped in the thread path 37 of the fixed blade 36 is released and supplied to the needle 3.

Next, the case where yarn feeding is stopped in the scissors 200 in the yarn feeding state will be described.
In the yarn feeding state shown in FIG. 4, the actuator 12 corresponding to the scissors 200 for stopping yarn feeding is operated, and the selector 14 is pushed down. At this time, the finger plate 15 corresponding to the selector 14 in the yarn feeding position protrudes the bat 15b, and the upper edge of the finger plate 15 is at a higher position on the butt 15b side. Therefore, when the selector 14 is pushed down, The protrusion 14d contacts the butt 15b side of the finger plate 15 and pivots the finger plate 15 around the pin 51 in the clockwise direction so that the finger plate butt 15a protrudes from the slit 8a of the top cover 8 and the finger plate butt 15b Retreat from the slit 8a. Then, it rotates in synchronism with the rotation of the knitting machine, and the return cam 17 comes into contact with the finger plate butt 15a to move the finger plate 15 to the right in FIG. 4 to return to the original standby position (shown in FIG. 1). The coupling arm 34, which is engaged with the concave portion 50b of the slide plate 50 fed integrally with the finger plate 15 by the right row of the finger plate 15 described above, is centered on the shaft 34a in the clockwise direction in FIG. The swivel plate 32 is pivoted and pivoted in the counterclockwise direction about the shaft 31, and the scissor 200 supported by the first arm 32a of the scissor plate 32 is raised to the standby position. At this time, the solenoid 22 is switched on, the control lever 21 is pushed down, and the control block 55 pivots clockwise around the shaft 56 via the control plate 58, so that the bar of the control arm 55a hanging from the control block 55 56a pushes down the concave portion 41a of the small arm 41 of the movable blade 36 of the scissors 200, thereby pushing down the movable blade 36, the thread presser plate 38, and the leaf spring 39, closing the thread path 37, and cutting and holding the thread.

Next, an operation for opening the bottom part 5 for maintenance or the like will be described.
As shown in FIG. 1, the bottom part 5 is hinged to the top part 4 by a shaft 10. And since the collar part 69 provided in the rear bracket 7 of the top part 5 and the pin 64 provided in the latch lever 63 of the lock member 61 are engaged in the fixed state, the latch lever 63 is released to release it. The lock is released by pulling the pin 65 provided on the latch lever 63 from the front side (right side in FIG. 1) of the yarn feeding device 1.

  If the pin 64 is disengaged from the flange portion 69, the bottom part turns by its own weight around the shaft 10 in the counterclockwise direction in FIGS. 1 and 5, so that the recess in the guide groove 73 of the stay 72 depending from the top part 4 is provided. The portions 75 and 76 may be engaged with the pins 74 provided on the side plate 2b of the bottom part 5 so that the bottom part has an appropriate angle and is opened.

The side view which shows the principal part of this invention apparatus. The front view of this invention apparatus. The side view at the time of the selector plate action | operation of this invention apparatus. The side view at the time of finger plate transfer of the device of the present invention. Operation | movement explanatory drawing of the bottom part open | release fixing means of this invention apparatus. The side view of the slide plate of a selector. The side view of the finger plate of a selector. The side view of the separator of a selector.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Yarn feeder 4 Top part 5 Bottom part 10 Shaft 100 Scissor selection means 200 Scissors 300 Scissors rocking means 400 Scissor opening / closing means operation means 500 Scissors opening / closing means 600 Bottom part opening fixing means

Claims (4)

  A yarn feeding device in a knitting machine having a scissor swing operation system device comprising a scissor selection means and a scissor swing means, and a scissor opening / closing operation system device comprising a scissor opening / closing means operating means and a scissor opening / closing means.   2. The yarn feeding device in a knitting machine according to claim 1, wherein the scissors selection means and the scissors opening / closing means operating means are provided on the top part, and the scissors swinging means and the scissors opening / closing means are provided on the bottom part.   A knitting machine characterized in that scissors selection means and scissor opening / closing means operating means are provided on the top part, scissors, scissor swing means, scissor opening / closing means are provided on the bottom part, and the bottom part is pivotally supported below the top part. Yarn feeder.   The connection between the scissors selection means and the scissors swing means is performed by inserting the tip of the coupling arm of the scissors swing means into the bag-like recess provided on the slide plate of the scissors selection device. A yarn feeding device in a knitting machine according to claim 3.

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