JP2011106059A - Flat knitting machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a flat knitting machine which can feed yarn stably and increase the degree of freedom in selecting yarn carrier. <P>SOLUTION: Even when the tips of yarn feeding mouths 5Ax-Ey of yarn carriers 6Ax-6Ey disposed at all tracks 14Ax-14Ey of five rails 4A-4E are supposed to reach a yarn feeding position 5a, a whole part of the yarn feeding mouths 5Ax-5Ey stays inside a sector region 11 which is provided beforehand as a space near the yarn feeding position 5a. Even when the increase in the number of the rails 4A-4E to five increases the degree of freedom in selecting the yarn carriers 6Ax-6Ey, yarn can be fed stably to hooks of knitting needles 10x and 10y advancing from yarn feeding mouths 5Ax-5Ey to a mouth part 3. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a flat knitting machine that includes a plurality of yarn path rails, selects a yarn carrier that moves along each yarn path rail, and supplies yarns for knitting.

  Conventionally, a flat knitting machine is provided with a plurality of yarn path rails in order to switch and use many types of knitting yarns (see, for example, Patent Document 1 and Patent Document 2). FIG. 1 of Patent Document 1 discloses a flat knitting machine including four yarn path rails. Since each yarn path rail is provided with tracks on both sides, a total of 8 tracks are provided in the four yarn path rails. Each track is provided with one or more yarn carriers. In the knitting of the knitted fabric, one of the yarn carriers is selected, and the yarn is fed to the knitting needle from the tip of the yarn feeder at a yarn feeding position where the front and back needle beds are set above the facing teeth. Each track and each yarn carrier are arranged such that a straight line passing through each track from each yarn feeder centering on the vicinity of the yarn feeding position is radial and expands in a fan shape as a whole. The four yarn path rails are erected in an arcuate arrangement as a whole, with the middle two being high and the two on both sides being low, so that the distance from the yarn feeding position is approximately the same.

  Each needle bed is provided with a carriage on which a cam system for driving the knitting needle is mounted. The carriages provided on the front and back needle beds are connected by gates straddling the yarn path rails and reciprocate in the longitudinal direction of the needle bed in conjunction with each other. An entrainment unit is provided in a portion where the gate straddles each track, and a yarn carrier is selected and entrained in the carriage. The four yarn path rails are installed so as to be parallel to the longitudinal direction of the needle bed, and are supported from below on both sides outside the traveling range of the carriage.

  If the tips of the yarn carriers provided on different tracks reach the yarn feeding position at the same time, when one of them is selected and moved, the yarn carrier cannot pass through the other and interfere with each other. In order to avoid this interference, a yarn carrier is used in which the yarn feeder moves up and down to avoid interference.

  When a knitted fabric such as an intarsia pattern is knitted, the accompanying yarn carrier is switched while the carriage travels. The yarn carrier supplied with the knitting yarn used for knitting in the preceding section has entered the subsequent section at the end of knitting in the section. In this state, if the knitting is performed by driving the knitting needles in the subsequent section, the knitting yarn used in the preceding section may be knitted in the subsequent section. Patent Document 1 discloses a configuration of a yarn carrier provided with a swing mechanism that returns the yarn feeder to the preceding section side.

  FIG. 2 of Patent Document 2 discloses a configuration of a flat flat knitting machine in which six bars corresponding to yarn path rails are horizontally arranged above two opposing needle beds. Regarding the yarn guide corresponding to the yarn carrier, paragraph 0014 describes that each bar is slidably provided and a yarn catcher is provided. FIG. 2 shows a straight line inclined from each thread guide at a different angle depending on the position of the thread guide toward the position above the opposing needle bed. Therefore, it is estimated that the knitting yarn is fed. The paragraph 0018 states that the number of bars can be increased to 20.

International Publication No. 02/079556 Pamphlet Japanese Patent No. 3309321

  A yarn path rail as shown in Patent Document 1 can be provided with a plurality of yarn carriers on the same track, for example, four yarn carriers per track, and a total of 32 yarn carriers. However, the yarn carriers provided in the same track are restricted when used in adjacent sections, and selection is limited. If the number of yarn path rails increases, the number of tracks also increases and the degree of freedom in selecting yarn carriers can be increased. However, when the number of yarn path rails is increased in the same configuration as that in FIG. 1 of Patent Document 1, the overall fan-shaped opening angle in which straight lines passing from the yarn feeders to the tracks centering on the vicinity of the yarn feeding position are radial. Will increase. As a result, for example, the yarn carrier of the yarn carrier provided on the outermost track is inclined from the center of the tooth opening, and the conditions for stably supplying yarn to the knitting needle that advances from one of the needle beds to the tooth opening deteriorates. End up. For this reason, there is no flat knitting machine in which more than four yarn path rails are arranged.

  Patent Document 2 describes that many bars can be arranged, but does not disclose a specific configuration for arranging the bars without deteriorating the yarn feeding conditions. FIG. 2 discloses a configuration in which six bars are horizontally arranged. If the left end bar is the first rail and the right end bar is the sixth rail, the space between the first rail and the sixth rail is horizontal. Space is expanding in the direction. For this reason, the yarn catcher extending incline from the first rail and the sixth rail to the yarn feeding position also becomes longer and the inclination angle becomes larger. If the yarn catcher becomes longer, it is likely that the yarn catcher becomes susceptible to external vibrations such as vibration caused by the carriage traveling, and the yarn feeding position fluctuates and the yarn feeding becomes unstable. The angle of inclination is equivalent to the angle of the moving direction of the knitting needle that advances from one needle bed, and it is presumed that this also deteriorates the condition of stable yarn feeding.

  An object of the present invention is to provide a flat knitting machine capable of stably supplying yarn and increasing the degree of freedom in selecting a yarn carrier.

The present invention has a yarn carrier that has a pair of needle beds facing at least front and back and feeds a knitting yarn from the tip of the yarn feeder at a yarn feeding position set above the tooth mouth between the needle beds. In a flat knitting machine for knitting a knitted fabric while selecting and moving a yarn carrier, which is provided so as to be movable along each track formed on both side surfaces of a plurality of yarn path rails installed above the position ,
The yarn path rails are arranged in an arcuate construction position in which five are laid in parallel, and the inside of the five is high and the outside is low,
The yarn carrier provided in each track reaches the yarn feeding position only in a state where the yarn carrier is selected to be used for knitting the knitted fabric, and in other states, the yarn carrier near the yarn feeding position by the selected yarn feeder. Equipped with a mechanism to retract so as not to interfere when passing,
Even when assuming that the tip of the yarn feeder reaches the yarn feeding position from the yarn carriers of all the trucks, the whole yarn feeder stays in a sector area that is allowed in advance as a space near the yarn feeding position,
The five yarn path rails have a center line that expands radially, and the expansion angle is larger than the expansion angle of the sector area as a whole,
The yarn carrier provided in each track has a deviation between the inclination angle of the center line of the yarn path rail provided with the track and the angle of the yarn feeder when the tip reaches the yarn supply position outside the fan-shaped region near the yarn supply position. Having a bend to adjust,
This is a flat knitting machine.

Further, in the present invention, the pair of front and back needle beds are inclined at an angle of 100 degrees so as to be higher on the side facing the mouth and lower on the side away from the mouth.
The spread angle formed between the yarn feeding directions of the outermost yarn feeders in the sector region is in the range of 50 degrees to 65 degrees, and is provided in an adjacent track in a state where the tip reaches the yarn feeding position. The yarn feeding direction from the yarn carrier to be formed is an angle of 5 degrees or more and 8 degrees or less, and the fan-shaped region has an expansion angle of 50 degrees or more and 64 degrees or less, and the tip is fed. In a state where the yarn position is reached, the yarn feeder from the yarn carrier provided in the adjacent track forms an angle of 5 degrees or more and 8 degrees or less,
The angle at which the center line of the yarn path rail spreads is 56 degrees or more and 72 degrees or less for the entire five lines, and 14 degrees or more and 18 degrees or less between adjacent yarn path rails.
It is characterized by that.

Further, in the present invention, the knitting needles of the front and rear needle beds are driven by a cam system mounted on a carriage that reciprocates along each needle bed,
The five yarn path rails are supported from below on both sides outside the travel range of the carriage,
The carriages of each needle bed are connected by a gate that travels with the carriage across the five yarn path rails,
The gate is provided with a guide portion that receives guidance by a guide path provided at the upper part of each yarn path rail at a position straddling each yarn path rail.
The guide portion that receives the guidance by the guide path of the yarn path rail that is the outermost side of the spread is in a state that can swing and displace about an axis perpendicular to the plane including the traveling direction and the center line of the yarn path rail with respect to the gate. Attached to the guideway at multiple locations spaced apart in the running direction, or at a section longer than a certain length,
It is characterized by that.

  According to the present invention, even when it is assumed that the tip of the yarn feeder reaches the yarn feeding position from the yarn carriers of all the tracks using five yarn path rails, the entire yarn feeder is a space near the yarn feeding position. Therefore, the knitted fabric can be knitted by supplying the knitting yarn to the knitting needles that advance into the tooth mouth under stable conditions. Since the number of yarn path rails is increased from 4 to 5, the degree of freedom in selecting a yarn carrier can be increased. The yarn carrier provided in each track is located near the yarn feeding position so as to adjust the deviation between the inclination angle of the center line of the yarn path rail provided with the track and the angle of the yarn feeder when the tip reaches the yarn feeding position. Since the bent portion is provided outside the fan-shaped region, the knitting yarn can be stably fed from the yarn feeder to the knitting needle even with the yarn carrier provided on the outer track.

  According to the present invention, even if the number of yarn path rails is increased from 4 so that five thread path rails are installed above the tooth opening between the needle beds facing each other at an angle of 100 degrees, the yarn feeder The yarn feeding from can be performed stably in the same manner as the yarn feeding conditions for laying four yarn path rails.

  Further, according to the present invention, the yarn path rail on the outer side of the arcuate arrangement may be shaken or bent due to vibration accompanying the traveling of the carriage, and the position of the tip of the yarn feeder may become unstable. For this purpose, a guide portion is attached to the gate straddling the yarn path rail so as to be able to swing and displace. Since the guide part abuts the guide path on the upper part of the yarn path rail at a plurality of places spaced in the running direction or at a section longer than a certain length, the guide part passes through the deflection or deflection of the yarn path rail. Can be corrected.

FIG. 1 is a partial side cross-sectional view showing a simplified configuration of a main part of a flat knitting machine 1 according to an embodiment of the present invention. FIG. 2 is a partial side sectional view showing the arrangement of the yarn path rail 4, the yarn carrier 6, and the yarn feeder 5 in the flat knitting machine 1 of FIG. FIG. 3 is a partial side view showing the relationship between the angle θ1 formed by the front and back needle beds 2 in the flat knitting machine 1 of FIG. 1 and the angle θ2 formed by the yarn feeder 5 remaining in the fan-shaped region 11 near the yarn feeding position 5a. It is sectional drawing. 4 is a partial cross-sectional side view and a front cross-sectional view showing the configuration of the swinging portion that corrects the deflection and deflection of the yarn path rail 4 arranged on the outermost side in FIG.

  Hereinafter, the flat knitting machine 1 as one embodiment of the present invention will be described with reference to FIGS. In the present embodiment, the same reference numerals may be given to portions corresponding to the portions described above, and overlapping description may be omitted. Also, in the figure, x is added to the reference side on the one side of the front and back, y is added to the reference mark, and the yarn path rail and the like are added with reference signs A to E depending on the arrangement. For common matters, these additional symbols are omitted.

  FIG. 1 shows a simplified configuration of a main part of a flat knitting machine 1 according to an embodiment of the present invention. The flat knitting machine 1 includes a pair of needle beds 2 facing front and rear, five yarn path rails 4 installed above the tooth gap 3 between the needle beds 2, and tracks 14 on both sides of the yarn path rails 4. A yarn carrier 6 having a yarn feeder 5 at the lower end, a carriage 7 provided on each needle bed 2, a gate 8 for connecting the carriages 7 across the yarn path rail 4, and a gate 8; And an entrainment unit 9 for selecting a yarn carrier 6 provided in each track 14. The needle beds 2 on both sides of the tooth opening 3 are symmetrical with respect to the center line 3a of the tooth opening 3, and are inclined so that the side of the tooth opening 3 is high and the side away from the tooth opening 3 is low. Each needle bed 2 is provided with knitting needles 10 arranged in a direction perpendicular to the drawing sheet. A cam system for driving the knitting needle 10 is mounted on the carriage 7, and the knitting needle 10 moves so that the hook at the tip moves forward and backward in the tooth opening 3 as the carriage 7 reciprocates in a direction perpendicular to the paper surface. The knitting yarn is supplied to the hook of the knitting needle 10 from the yarn feeder 5 at the lower end of the yarn carrier 6 selected by the accompanying unit 9 at the yarn feeding position 5a.

  In the figure, even when it is assumed that the tip of the yarn feeder 5 of the yarn carrier 6 provided in all the tracks reaches the yarn feeding position 5a, the entire area including the outer shape of the yarn feeder 5 is preliminarily defined as a space near the yarn feeding position 5a. It shows that it stays within the allowable sector region 11. However, as shown in Patent Document 1, each yarn carrier 6 has a tip at the yarn feeding position 5a in the sector region 11 using a yarn feeder 5 that is retracted from the vicinity of the yarn feeding position 5a in a non-selected state. Interference is avoided by having a single yarn feeder 5 that has reached. By using the five yarn path rails 4, it is possible to increase the choices of usable tracks 14 and to easily determine the selection of the yarn carrier 6 according to the pattern of the knitted fabric to be knitted. It becomes.

  In addition, guide portions 12 and 13 that are guided by the upper portion of the yarn path rail 4 are provided at positions where the gate 8 straddles the yarn path rail 4. As will be described later, the guide portion 12 provided for the outermost yarn path rail 4 swings so as to abut at two points, and the guide portion 13 provided for the other yarn path rail 4 is fixed at a fixed point. Touch.

  The five yarn path rails 4 are arranged from the x side to the y side from the first yarn path rail 4A, the second yarn path rail 4B, the third yarn path rail 4C, the fourth yarn path rail 4D, and the fifth yarn path. It arrange | positions like the rail 4E. The tracks 14 are respectively provided on the x side and the y side of each yarn path rail 4, and the first track 14Ax and the second track 14Ay are provided on the first yarn path rail 4A. The third track 14Bx is provided on the x side of the second yarn path rail 4B, and hereinafter, the tenth track 14Ey is provided on the y side of the fifth yarn path rail 4E. Each track 14Ax, 14Ay,..., 14Ey can be provided with one or a plurality of yarn carriers 6Ax, 6Ay,. A yarn feeder 5Ax,..., 5Ey is provided at the tip of each yarn carrier 6Ax,. The yarn feeder 5 and the yarn carrier 6 may correspond to the position of the provided track, for example, the yarn feeder 5 provided in the first track 14Ax may be indicated as the first yarn feeder 5Ax. Engagement units 9A, 9B, 9C, 9D, and 9E are provided on the gate 8 at positions straddling the yarn path rails 4A, 4B, 4C, 4D, and 4E, respectively.

  FIG. 2 shows the arrangement of the yarn path rail 4, the yarn carrier 6 and the yarn feeder 5 in the flat knitting machine 1 of FIG. The intermediate third yarn path rail 4 </ b> C is arranged so that the center line 4 </ b> Cc is on the center line 3 a of the tooth mouth 3. The other yarn path rails 4A, 4B, 4D, and 4E are arranged at positions that extend in an arc shape on both sides of the third yarn path rail 4C. Center lines 4Ac to 4Ec of the yarn path rails 4A to 4E extend radially from the vicinity of the yarn feeding position 5a. Guide paths 4d are respectively formed on the upper portions of the yarn path rails 4A to 4E through which the center lines 4Ac to 4Ec pass, and guide the guide portions 12 and 13 shown in FIG. The angle formed by the center line 4Ac of the first yarn path rail 4A and the fifth thread path rail center line 4Ec is in the range of 56 degrees to 72 degrees, for example, 64 degrees. The angle between adjacent yarn path rails 4 is in the range of 14 degrees to 18 degrees, for example, 16 degrees.

  Each yarn carrier 6 includes a feeder rod guide 6a and a feeder rod 6b. The feeder rod 6b is provided with a yarn feeder 5 at the tip guided by the feeder rod guide 6a. The feeder rod guide 6 a and the feeder rod 6 b have a bent portion 6 c at a position close to the sector region 11. Each yarn carrier 6 is also slidably supported by each track 14 and includes a sliding unit 6d having a mechanism for raising and lowering the feeder rod 6b and swinging the feeder rod guide 6a in conjunction with the selection by the accompanying unit 9. It has been. A mechanism for retracting the yarn feeder 5 from the sector region 11 in this manner is disclosed in Patent Document 1. On the side closer to the fan-shaped region 11 than the bent portion 6c, the direction in which the feeder rod guide 6a extends, the direction in which the feeder rod 6b extends, and the direction in which the feeder rod 6b is guided by the feeder rod guide 6a are the yarn supply of the yarn feeder 5 It almost coincides with the direction.

  FIG. 3 shows the first yarn feeder which is the outermost one of the angle θ1 formed by the front and back needle beds 2x and 2y in the flat knitting machine 1 of FIG. 1 and the yarn feeder 5 which stays in the fan-shaped region 11 near the yarn feeding position 5a. The relationship between 5 Ax yarn feeding direction and angle (theta) 2 which 10th yarn feeder 5Ey yarn feeding direction makes is shown. The angle θ1 formed by the front and back needle beds 2x, 2y is an angle between straight lines that become the locus of the bottom when the knitting needle 10 advances and retreats to the tooth opening 3, and is, for example, 100 degrees. As the flat knitting machine, another angle, for example, 90 degrees is also used.

  The fan-shaped region 11 has a difference in angle of θ1 so that the yarn can be stably fed to the hook 10a provided at the tip of the knitting needles 10x and 10y that advance from the front and rear needle beds 2x and 2y to the tooth mouth 3. In addition, it is set based on the results of the conventional flat knitting machine, and is an area of the angle θ2 formed between the first yarn feeder 5Ax and the tenth yarn feeder 5Ey. The angle θ2 is, for example, 58 degrees, and it is assumed that the angle θ2 extends to a range of 50 degrees or more and 65 degrees or less. In the sector region 11, the angle formed by the adjacent yarn feeders 5 is, for example, 5 degrees or more and 8 degrees or less. When the angle of θ1 becomes smaller than the aforementioned 100 degrees, for example, 90 degrees, the angle of θ2 is also decreased to a range of 40 degrees or more and 55 degrees or less, for example, so that the yarn feeding condition does not deteriorate. There is a need.

  FIG. 4 shows a configuration for correcting the deflection and deflection of the first yarn path rail 4A and the fifth yarn path rail 4E arranged on the outermost side in FIG. (A) shows the configuration viewed from the side, and (b) shows the configuration viewed from the front. At a position across the outermost yarn path rail 4 at the gate 8, a guide member 20 having a guide portion 12 with two guide wheels 12a and 12b is provided at an interval in the longitudinal direction in which the yarn path rail 4 extends. The five yarn path rails 4 are also supported from below on both sides in the longitudinal direction outside the travel range of the carriage 7. The outermost portion in the width direction arranged in an arc shape has a large inclination of the yarn path rails 4A and 4E. Therefore, the guide portion 12 that abuts on the guide path 4d provided on the upper portion of the yarn path rail 4 is particularly two-wheeled. Since a plurality of cam systems are mounted on the carriage 7, the gate 8 also has a shape that extends in the traveling direction of the carriage 7 in which the yarn path rail 4 extends. The guide portions 12 and 13 shown in FIG. 1 are provided on both sides in the traveling direction with respect to the gate 8.

  The guide member 20 is attached to the gate 8 via the attachment member 23 so that the swing displacement around the swing shaft 21 is restricted by the restriction pin 22. The swing shaft 21 is supported by the attachment member 20, and a play is provided in a restriction hole 23 a through which a restriction pin fixed to the guide member 20 passes through the attachment member 23. As a result, even if the position of the guide path 4d is shifted due to vibration or deflection caused by vibration during the traveling of the carriage 7, the guide wheels 12a and 12b of the guide unit 12 always abut against the guide path 4d at two points to distribute the load. Thus, the deflection of the yarn path rail 4 can be corrected. Such correction is not a fixed point as in the guide portion 13, but the guide portion 12 may be contacted at intervals in a plurality of locations in the traveling direction, or in a section of a certain length. If possible.

DESCRIPTION OF SYMBOLS 1 Flat knitting machine 3 Tooth mouth 4,4A, 4B, 4C, 4D, 4E Yarn rail 4Ac, 4Bc, 4Cc, 4Dc, 4Ec Center line 5,5Ax, 5Ey Yarn feeder 5a Feeding position 6,6Ax, 6Ay, 6Bx , 6Ey Yarn carrier 7 Carriage 8 Gate 11 Fan-shaped area 12, 12a, 12b Guide section 14, 14Ax, 14Ay, 14Bx, 14Ey Track

Claims (3)

A yarn carrier having at least a pair of front and back needle beds and supplying a knitting yarn from the tip of the yarn feeder at a yarn feeding position set above the tooth mouth between the needle beds is located above the yarn feeding position. In a flat knitting machine that is provided so as to be movable along each track formed on both side surfaces of a plurality of yarn path rails to be constructed, and knitting a knitted fabric while selecting and moving a yarn carrier,
The yarn path rails are arranged in an arcuate construction position in which five are laid in parallel, and the inside of the five is high and the outside is low,
The yarn carrier provided in each track reaches the yarn feeding position only in a state where the yarn carrier is selected to be used for knitting the knitted fabric, and in other states, the yarn carrier near the yarn feeding position by the selected yarn feeder. Equipped with a mechanism to retract so as not to interfere when passing,
Even when assuming that the tip of the yarn feeder reaches the yarn feeding position from the yarn carriers of all the trucks, the whole yarn feeder stays in a sector area that is allowed in advance as a space near the yarn feeding position,
The five yarn path rails have a center line that expands radially, and the expansion angle is larger than the expansion angle of the sector area as a whole,
The yarn carrier provided in each track has a deviation between the inclination angle of the center line of the yarn path rail provided with the track and the angle of the yarn feeder when the tip reaches the yarn supply position outside the fan-shaped region near the yarn supply position. Having a bend to adjust,
A flat knitting machine characterized by that. The pair of front and back needle beds are inclined at an angle of 100 degrees so as to be higher on the side facing the mouth and lower on the side away from the mouth.
The spread angle formed between the yarn feeding directions of the outermost yarn feeders in the sector region is in the range of 50 degrees to 65 degrees, and is provided in an adjacent track in a state where the tip reaches the yarn feeding position. The angle between the yarn feeding directions of the yarn feeders from the yarn carrier is 5 degrees or more and 8 degrees or less,
The angle at which the center line of the yarn path rail spreads is 56 degrees or more and 72 degrees or less for the entire five lines, and 14 degrees or more and 18 degrees or less between adjacent yarn path rails.
The flat knitting machine according to claim 1. The knitting needles of the front and back needle beds are driven by a cam system mounted on a carriage that reciprocates along each needle bed,
The five yarn path rails are supported from below on both sides outside the travel range of the carriage,
The carriages of each needle bed are connected by a gate that travels with the carriage across the five yarn path rails,
The gate is provided with a guide portion that receives guidance by a guide path provided at the upper part of each yarn path rail at a position straddling each yarn path rail.
The guide portion that receives the guidance by the guide path of the yarn path rail that is the outermost side of the spread is in a state that can swing and displace about an axis perpendicular to the plane including the traveling direction and the center line of the yarn path rail with respect to the gate. Attached to the guideway at multiple locations spaced apart in the running direction, or at a section longer than a certain length,
The flat knitting machine according to claim 1 or 2, characterized by the above.

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