JP5079682B2 - Flat knitting machine for tubular knitted fabric and knitting method of tubular knitted fabric - Google Patents

Description

  The present invention relates to a tubular knitted fabric knitting machine for knitting a knitted fabric in a tubular shape with a flat knitting machine having a pair of needle beds facing each other with a tooth opening and a knitting method of the tubular knitted fabric.

  Conventionally, in a flat knitting machine provided with needle beds on the front and rear sides of a tooth opening, a tubular knitted fabric is knitted by bag knitting. In bag knitting, a knitting yarn is fed while circulating in both directions across both needle beds, and a flat knitted fabric is knitted on each needle bed. The tubular knitted fabric by bag knitting is used for gloves and socks, for example.

  In general-purpose flat knitting machines with a transfer function to transfer stitches between needle beds, one side of the knitted fabric is knitted using both needle beds, and the knitted fabrics on both sides are connected at the end of the knitting width. A cylindrical knitted fabric can also be formed. In flat knitting machines for knitting such as gloves and socks, pile knitting is performed by using ground yarn and pile yarn as knitting yarn and using a sinker with a function of separating the ground yarn and pile yarn It is also possible (see, for example, Patent Document 1).

  When a tubular knitted fabric is knitted with a flat knitting machine, the yarn feeding direction at the end of the knitting width is reversed between the knitted fabric on one side and the knitted fabric on the other side. In a knitting needle that locks the stitch of one side of the knitted fabric knitted just before the yarn feeding direction is reversed, when the knitted fabric of the other side is knitted, The yarn is fed to the opposite needle bed side beyond the mouth. When the tension of the knitting yarn increases toward the opposite needle bed side, the knitting needle drawn into the needle bed at the time of stitch formation is pulled out to the mouth side, and the stitches locked are reduced, and the tubular knitted fabric product There is a risk that the quality will deteriorate (see, for example, Patent Document 2). In Patent Document 2, a knitting needle is formed by knitting a knitted fabric by feeding a knitting needle that locks the last formed stitch into a needle bed with a cam mounted on a carriage and feeding the yarn to the opposite needle bed side. To prevent the withdrawal. Of the cams mounted on the carriage, at least the mountain cam is used, and further, the lowering cam is also used.

  FIG. 6 shows an example of a pile knitting sinker 1 used for pile knitting as disclosed in Patent Document 1 as 1A as a front structure and 1B as a planar structure. The pile knitting sinker 1 is used with the working arm 2 on the tip side facing the tooth opening. The tip of the working arm 2 is divided into a ground yarn hooking claw 3 and a pile yarn hooking claw 4. As the knitting needle, a pile knitting needle having a hook at the front end provided with a hook for hooking a ground yarn on the inner edge facing the hook at the latch portion is used. The ground yarn locking rod corresponds to the knitting yarn locking rod of the knitting needle for pile described in Patent Document 1. A bat 5 is provided on the tail end side of the pile knitting sinker 1. A plate-like cam is inserted into the recess between the working arm 2 and the bat 5. The cam is provided with a cam surface that contacts the working arm 2 side and a cam surface that contacts the bat 5 side. The pile knitting sinker 1 is moved forward and backward by the pressing direction of the cam on the working arm 2 side or the bat 5 side.

In pile knitting using the pile knitting sinker 1, first, the pile knitting needle is latched, the hook is advanced into the tooth opening, and the ground yarn is fed so as to be hooked on the ground yarn locking hook. Next, when the tip of the pile thread hook 4 is inserted between the ground thread locking hook and the hook and the pile thread is fed into the hook, the ground thread and the pile thread are separated into the hooks. And can be fed. At the time of forming the stitch, the hook is pulled away from the tooth opening rather than the position of the ground yarn hooking claw 3. The needle loop of the stitch is formed by a hook common to the ground yarn and the pile yarn. The ground yarn forms a sinker loop at the ground yarn sinker portion 3a of the ground yarn hooking claw 3. The pile yarn forms a pile loop longer than the sinker loop of the ground yarn at the pile yarn sinker portion 4a.
Japanese Patent Publication No. 60-59333 International Publication No. 06/103957 Pamphlet

  When a tubular knitted fabric is knitted with a flat knitting machine, there is a possibility that the stitches become small at the knitted fabric end portion facing the tooth opening, and the gap between the boundary portions corresponding to the tooth opening is widened so that cracks are conspicuous. As a measure for preventing cracks from being noticeable, in Patent Document 2, it is necessary to switch the guide route by the cam so that the knitting needle that locks the stitch before reversing the yarn feeding direction is pulled down by the cam. A route is added and control for switching the route is required.

  When a pile knitted tubular knitted fabric is knitted using the pile knitting sinker 1 as shown in FIG. 6, it is necessary to move the working arm 2 back and forth in the mouth, so the mouth becomes wider. At the knitting end where the yarn feeding direction is reversed, the pile yarn is also drawn to the opposite needle bed side, and the pile loop becomes small. In the pile knitted tubular knitted fabric, not only the difference in the stitches of the ground yarn at the boundary portion but also the difference in the length of the pile loop occurs, so that the boundary portion is easily noticeable. A pile knitted tubular knitted fabric is used as a glove for coating a rubber material or the like. Coating of a rubber material or the like is performed by immersing in a material solution. However, if the space between the stitches at the boundary portion is widened, the material solution is likely to penetrate into the inside. In addition, if the pile loops are different in size, the thickness of the material liquid adhering is uneven.

  An object of the present invention is to provide a flat knitting machine for knitting a tubular knitted fabric and a knitting method of the tubular knitted fabric that can make a boundary portion inconspicuous.

The present invention comprises a pair of needle beds facing each other across the mouth, and feeds the knitting yarn so as to circulate in a certain direction, and knitting the knitted fabric from the beginning to the end of the knitting width at each needle bed, In a flat knitting machine for knitting a tubular knitted fabric capable of knitting a knitted fabric in a tubular shape while connecting between the needle beds from the end of one needle bed to the beginning of the other needle bed,
It is formed adjacent to the knitting needle at the end of the knitting width in each needle bed, adjacent to the knitting needle in the direction of the knitting width, and the stitches locked to the knitting needle are knocked over and shifted to the mouth side. A diameter-expanding member capable of expanding the diameter of the old stitch,
Advancing and retreating mechanism that allows the tip of the diameter-expanding member to advance into the tooth mouth, or switches to retract from the tooth mouth, and allows the tip of the diameter-expanding member to enter the old stitch when entering the mouth.
A flat knitting machine for knitting a tubular knitted fabric.

In the present invention, each needle bed is provided with a movable sinker capable of moving the tip back and forth between the knitting needles.
The diameter expanding member is provided by replacing a movable sinker,
The mechanism for moving the movable sinker back and forth to the tooth opening is the advance / retreat mechanism, wherein the tip of the diameter-expanding member is moved forward or backward to the tooth opening.

In the present invention, the flat knitting machine may include a ground yarn used for forming a basic portion of a tubular knitted fabric as the knitting yarn, and a pile yarn that is added to each stitch of the basic portion to form a pile portion. Knitting pile tubular knitted fabric while feeding yarns in parallel,
The movable sinker is inserted between the ground yarn and the pile yarn and separates the ground yarn and the pile yarn when the new stitch is formed.

Furthermore, the present invention is a flat knitting machine having a pair of needle beds facing each other with a tooth gap interposed therebetween, and feeds the knitting yarn so as to circulate in a certain direction, and knitting from the start end to the end of the knitting width at each needle bed. In the knitting method of the tubular knitted fabric, the knitted fabric is knitted in a tubular shape while knitting the ground and connecting between the needle beds from the end of one needle bed to the starting end of the other needle bed.
With respect to the knitting needle at the end of the knitting width at each needle bed, a diameter-expanding member capable of expanding the diameter of the old stitch is disposed adjacent to the knitting width in the direction of the starting end side. ,
When a new knitting yarn is fed to a knitting needle that is the end of the knitting width at each needle bed and a new stitch is formed, the stitch locked to the knitting needle is knocked over and moved to the mouth side. It is a knitting method for a tubular knitted fabric, characterized in that the diameter of the old stitch is expanded by causing the tip of the diameter expanding member to enter the old stitch to be formed.

  According to the present invention, the flat knitting machine for knitting a tubular knitted fabric is provided with a pair of needle beds facing each other across the mouth, and feeds the knitting yarn so as to circulate in a certain direction. A knitted fabric is knitted from the start end to the end of the knitting width, and the knitted fabric is knitted in a cylindrical shape while being connected between the end of one needle bed and the start end of the other needle bed. A diameter-expanding member is disposed adjacent to the knitting needle at the end of the knitting width in each needle bed in the direction of the starting end side of the knitting width. The old stitch formed by knocking over the stitch locked to the knitting needle at the end of the knitting width and moving to the side of the mouth is contracted and shifted to the start end side of the knitting width. If the tip of the diameter-expanding member is advanced into the tooth opening by the advance / retreat mechanism, the tip of the diameter-expanding member enters the old stitch, and the diameter of the old stitch once contracted is expanded. Since the knitting yarn that expands the diameter of the old stitch is drawn from between the stitches at the boundary, the size of the old stitch can be restored, the spread between the stitches at the boundary can be reduced, and the boundary can be made inconspicuous. it can.

  Further, according to the present invention, the diameter can be increased even if the stitches locked by the terminal knitting needle are knocked over and contracted by using a mechanism for moving the movable sinker back and forth to the tooth opening. The movable sinker can also be used for sinker when forming a stitch or for lowering the formed knitted fabric to the mouth.

  Further, according to the present invention, when a pile knitted tubular knitted fabric is knitted, it is possible to alleviate the problem that the stitches become smaller at the boundary portions and the spaces between the stitches are widened and become conspicuous.

  Furthermore, according to the present invention, the problem that the stitches are reduced at the boundary portion and the space between the stitches is expanded can be made inconspicuous by expanding the diameter of the stitch that is knocked over from the knitting needle and contracts. By directly expanding the diameter of the knocked-over stitch, the expanding knitting yarn can be drawn from between the stitches at the boundary portion to reduce the spread, making the boundary portion less noticeable.

  FIG. 1 schematically shows the main part of the configuration of a flat knitting machine 10 as an embodiment of the present invention. The flat knitting machine 10 has a front needle bed 11 and a rear needle bed 12. A large number of knitting needles 13 and 14 are arranged in parallel on the front needle bed 11 and the rear needle bed 12, respectively. Hooks 13a and 14a are provided at the tips of the knitting needles 13 and 14, respectively. The knitting needles 13 of the front needle bed 11 and the knitting needles 14 of the rear needle bed 12 are arranged so that the positions of encounters are shifted. The tubular knitted fabric is knitted by supplying yarn so as to go around the knitting yarn in a certain direction. For example, when a cylindrical knitted fabric is knitted with clockwise yarn feeding, the knitting needle 13 of the front needle bed 11 is fed from the right to the left in the figure, and the knitting needle 14 of the rear needle bed 12 is fed from the left. Knitting while switching the yarn feeding direction so that the yarn is fed in the right direction. At the left end, the knitting needles 13 and 14 are used so that the end side of the front needle bed 11 is outside the knitting width from the start side of the rear needle bed 12. Among the knitting needles 13 used in the front needle bed 11, the diameter-expanding member 15 is disposed adjacent to the knitting needle 13 which is the terminal end in the direction of the start end side of the knitting width. Also in the rear needle bed 12, the diameter-expanding member 15 is disposed adjacent to the start end side of the knitting needle 14 which is the end of the knitting width. However, in the figure, only the left end of the knitting width is shown, and the right end is omitted. A movable sinker 16 is disposed between the knitting needles 13 and 14 at a position where the diameter expanding member 15 is not disposed. Each movable sinker 16 is attached to a sinker floor for advancing and retreating disposed on the mouth side of the front needle bed 11 and the rear needle bed 12, respectively. The diameter expanding member 15 is also mounted on the sinker floor of the movable sinker 16. The diameter-expanding member 15 has a different tip at the portion corresponding to the working arm 2 of the pile knitting sinker 1, and the diameter of the stitch can be increased by inserting the tip into the stitch. The description of the shape of the diameter expanding member 15 will be described later with reference to FIG.

  Gloves and socks are knitted under the same conditions to improve productivity. Therefore, the knitting needles 13 and 14 that are the end of the knitting width can be fixed, and the diameter-enlarging member 15 may be disposed only at a position adjacent to the knitting needles 13 and 14 on the start end side of the knitting width. If the diameter-expanding member 15 is movable, the function of expanding the stitches can be used effectively even if the knitting width changes during knitting.

  Between the front needle bed 11 and the rear needle bed 12, a gap including the central surface 17 is provided as a tooth opening 18. When the hooks 13a and 14a of the knitting needles 13 and 14 are advanced into the tooth opening 18, the yarn 13 is supplied with the knitting yarn 20, and then the hooks 13a and 14a are pulled into the front needle bed 11 and the rear needle bed 12, New stitches 21 and 22 can be formed. When the new stitches 21 and 22 are formed, the stitches locked to the hooks 13a and 14a are advanced from the hooks 13a and 14a into the tooth opening 18, and the needles 13 and 14 are hooked from the hooks 13a and 14a to the side of the needle trunk. Migrate to By pulling in the hooks 13a and 14a, the stitches that are locked are knocked over to move to the side of the tooth opening 18, and the old stitches 23 and 24 are formed.

  When the knitted fabric to be knitted is knocked over from the knitting needles 13 and 14 and shifts to the tooth opening 18, the knitting width is reduced as compared with the state where the knitted fabrics 13 and 14 are locked. Further, the knitting needles 13 and 14 also have a misalignment between the front needle bed 11 and the rear needle bed 12. Therefore, the old stitch 25 knocked over from the knitting needle 13 at the end of the knitting width is formed at a position shifted from the new stitch 21 to the inside of the knitting width, that is, to the start end side. If the diameter-expanding member 15 is positioned so as to match the position of the old stitch 25 that shifts inward, the tip of the diameter-expanding member 15 can be advanced into the tooth opening 18 to enter the old stitch 25. it can. If the tip shape of the diameter expanding member 15 is tapered, for example, the old stitch 25 can be enlarged by increasing the amount of penetration. Accordingly, even if the direction of feeding the knitting yarn 20 from the yarn feeder 19 is reversed and the size of the newly formed new stitch 21 becomes smaller, after the circular knitting, after the transition to the tooth mouth 18 as the old stitch 25 Thus, the diameter of the stitch can be expanded by allowing the tip of the diameter-expanding member 15 to enter, and the size of the stitch can be maintained.

  FIG. 2 shows a schematic configuration of a flat knitting machine 30 as another embodiment of the present invention. In the flat knitting machine 30, portions corresponding to the flat knitting machine 10 in FIG. 1 are denoted by the same reference numerals, and redundant description is omitted. In the flat knitting machine 30, a pile knitted tubular knitted fabric is knitted using the pile knitting sinker 1 shown in FIG. The front needle bed 31 and the rear needle bed 32 are arranged so as to face each other with the tooth opening 18 interposed therebetween. The front needle bed 31 and the rear needle bed 32 are formed by standing a large number of needle plates 31a, 32a on base plates 31b, 32b. A needle groove is formed between the needle plates 31a and 32a, and the knitting needles 33 and 34 are accommodated. As the knitting needles 33 and 34, pile knitting needles as disclosed in Patent Document 1 are used. Bands 35 and 36 are provided in the upper part of each needle groove to prevent the knitting needles 33 and 34 from being detached from the needle groove. For the knitting needle 33 that is the end of the knitting width, the diameter-expanding member 15 is arranged in place of the pile knitting sinker 1 so as to be adjacent to the inside of the knitting width. In the rear needle bed 32, the diameter expanding member 15 is disposed in place of the pile knitting sinker 1 so as to be adjacent to the inner side of the knitting width with respect to the knitting needle 34 which is the end of the knitting width. Is omitted.

  The pile knitting sinker 1 and the diameter-expanding member 15 are disposed on sinker floors 37 and 38 provided on the side of the tooth opening 18 of the front needle bed 31 and the rear needle bed 32. The pile yarn is supplied from above the tooth mouth 18 by a pile yarn feeder 39. The sinker floors 37 and 38 are supported at both ends by sinker floor mounting plates 37 a and 38 a provided at both ends of the front needle bed 31 and the rear needle bed 32.

  The knitting needles 33 on the front needle bed 31 and the knitting needles 34 on the rear needle bed 32 are driven by carriages 41 and 42 on which cams 40 are mounted reciprocally travel in a direction perpendicular to the paper surface of the drawing. Sinker cams 43, 44 for driving the pile knitting sinker 1 and the diameter-expanding member 15 are also attached to the carriages 41, 42 via sinker cam attachment plates 45, 46. The carriages 41 and 42 are guided by guide shafts 47 and 48 penetrating in a direction perpendicular to the paper surface. The cam 40 is attached to the needle cam attachment plates 49 and 50. The diameter-expanding member 15 can be advanced to the tooth opening 18 until the state indicated by the two-dot chain line.

  FIG. 3 shows the configuration of the diameter-expanding member 15 shown in FIGS. 1 and 2 with a front surface 15A and a planar surface 15B. The diameter-expanding member 15 has a working arm 51 on the side facing the tooth opening 18. The tip of the working arm 51 is formed as a tapered enlarged diameter portion 52 that is thin overall and has a small change in diameter. That is, as shown by 15A on the front, the enlarged diameter portion 52 is relatively thin and the degree of change in height is small. The working arm 51 is provided with a portion that is relatively large and increases in height on the proximal end side of the enlarged diameter portion 52. Since the diameter-expanding member 15 has a narrowed diameter-expanded portion 52 on the distal end side, the diameter-expanding member 52 can easily enter the old stitch 25 that has become smaller, and can gradually increase the diameter after entering. As shown by a flat surface 15B, the diameter-enlarged portion 52 of the diameter-expanding member 15 is chamfered so that the thickness is constant up to the vicinity of the tip, and one side is an inclined surface at the tip. The diameter-expanding member 15 shown in FIG. 1 allows the tip to enter the right side of the old stitch 25, so that the right side of the thickness is chamfered so that the tip can easily enter the old stitch 25. In a positional relationship that allows the old stitch 25 to enter the vicinity of the center, both sides of the thickness may be chamfered.

  The expanded diameter portion 52 of the present embodiment combines both shapes to facilitate entry into the old stitch 25 and expanded diameter, but only one of the shapes may be used. A portion following the tapered portion from the tip of the enlarged diameter portion 52 functions as a sinker portion 53. A bat 55 is provided on the side of the diameter-expanding member 15 away from the tooth opening 18. Sinker cams 43 and 44 shown in FIG. 2 act between the action arm 51 and the bat 55.

  FIG. 4 shows a configuration for knitting in the vicinity of the tooth opening 18 in the flat knitting machine 30 of FIG. The knitting needles 33 on the front needle bed 31 and the knitting needles 34 on the rear needle bed 32 open and close hooks 33a and 34a at the front ends by latches 33b and 34b. The diameter-expanding member 15 is disposed adjacent to the inside of the knitting width with respect to the knitting needle 33 that is the end of the knitting width on the front needle bed 31 side. The pile knitting sinker 1 is arranged at another position adjacent to the knitting needle 33. Although the diameter-expanding member 15 is disposed adjacent to the inner side of the knitting width with respect to the knitting needle 34 that is the terminal end of the knitting width, the illustration is omitted. The pile knitting sinker 1 is disposed at another position adjacent to the knitting needle 34.

  FIG. 5 shows the relationship between the cam 40 attached to the needle cam mounting plate 49 of the carriage 41 of FIG. 2 and driving the knitting needle 33 and the sinker cam 43 in the same phase. The relationship between the cam for driving the knitting needle 34 by the carriage 42 and the sinker cam 44 is the same.

  The knitting needle 33 has a bat that protrudes from the needle groove, and is driven along a path shown by a relatively right-hand trajectory 33c when the left side is based on the carriage 41 as shown in the figure to form a stitch. Such a driving cam 40 includes a guide cam 61, a rubber crest 62, a set-up cam 63, a needle raising cam 64, a Nakayama cam 65, a Tianshan cam 66, a set-up retracting cam 67, a crest 68, and a guide. A cam 69 is included. In forming the knit stitch, the knitting needle 33 is advanced to the tooth opening 18 by the needle raising cam 64, the knitting needle 33 is drawn into the front needle bed 31 by the degree crest 68, and the degree is determined by the amount of retraction of the degree crest 68. The set-up / out cam 67 protrudes during set-up, and advances the knitting needle 33 to the tooth opening 18 in the same manner as the needle raising cam 64 when the carriage 41 moves to the right. At the time of set-up, the set-up cam 63 pulls the knitting needle 33 into the front needle bed 31 in the same manner as the degree pile 68.

  Similarly, in the carriage 42 of the rear needle bed 32, the knit knitting drive is performed on the left line with the carriage 42 as a reference, and the stitches can be formed on the right line when setting up. Therefore, at the time of set-up, the knitting yarn 20 can be passed so that the knitting needles 33 of the front needle bed 31 and the knitting needles 34 of the rear needle bed 32 are simultaneously used to connect the tooth opening 18 in a zigzag manner.

  The sinker cam 43 is basically formed so as to drive the pile knitting sinker 1. Attached to the sinker cam 43, movable cams 71 and 72 are provided. The movable cam 71 rotates in the state shown in the figure on the left side of the carriage 41 and in the counterclockwise direction on the right side. The movable cam 72 is in a sunk state as shown in the figure on the left side of the carriage 41 and protrudes on the right side. By such movable cams 71 and 72, the knitting needle 33 is guided between the Nakayama cam 65 and the Tenzan cam 66, and the operation of the pile knitting sinker 1 when the hook 33a advances into the tooth opening 18 is directed in the direction. Will be adjusted according to.

  The sinker cam 43 is provided with a concave portion 43a and convex portions 43b and 43c on the working arm 51 side in order to drive the diameter expanding member 15, and a convex portion 43d is also provided on the bat side. The drive trajectories of the working arm 51 and the bat 55 of the diameter-expanding member 15 by the sinker cam 43 are indicated by 51a and 55a, respectively. The old stitch is knocked over while the knitting needle 33 is being pulled into the front needle bed 31 at the degree 68 before the new stitch is formed with the knitting needle 33. When the knitting needle 33 is retracted, the diameter-expanding member 15 is also advanced to the tooth opening 18 and a sinker loop is formed by the sinker portion 53. When the recess 43a is reached, the working arm 51 of the diameter-expanding member 15 is once pulled up and retracted from the tooth opening 18, and the working arm 51 is advanced into the tooth opening 18 by the protrusion 43b. At this time, the knocked-out old stitch is present at the advance destination of the enlarged diameter portion 52, and the tapered tip of the enlarged diameter portion 52 can be pierced into the old stitch to increase the diameter of the old stitch. When the carriage 41 continues to the left, the working arm 51 is pulled up from the tooth opening 18, and the diameter expanding member 15 exits the sinker cam 43 in a state where the working arm 51 is advanced to the tooth opening 18 by the convex portion 43 c. When the carriage 41 turns right after reversing the traveling direction, the working arm 51 of the diameter-expanding member 15 is pulled up from the tooth opening 18 by the convex portion 43d on the butt 55 side. The knitting needle 33 stays in the front needle bed 31 without advancing to the tooth opening 18 because the set-up and retracting cam 67 is in the sunk state.

  In the diameter-expanding member 15 described above, the sinker floor 37 is provided and moved in order to allow the diameter-enlarged portion 52 at the tip of the working arm 51 to enter the old stitch 25. As the movable sinker of the flat knitting machine, a structure is also used in which the front end of the front needle bed 31 and the rear needle bed 32 is provided with a fulcrum to advance and retract the front end to the tooth opening 18, thereby contributing to the lowering of the knitted fabric. ing. The function similar to that of the diameter-expanding member 15 can be achieved by such swinging displacement. In addition, a diameter-expanding member that does not have a function as a sinker and that has a function of expanding only the diameter of the old stitch can be arranged on another floor, for example, in the same configuration as a transfer jack. . If it is possible to selectively operate on a different floor, the diameter expansion member to be operated can be changed even if the diameter of the tubular knitted fabric changes and the position of the knitting needle at the end of the knitting width changes. Thus, the problem that the stitches become small at the boundary portion can be reduced, and the boundary portion can be made inconspicuous. In particular, in the case of a pile knitted tubular knitted fabric, when coating a rubber material or the like, it is possible to eliminate penetration into the interior and uneven adhesion.

1 is a plan view schematically showing a main part of a configuration of a flat knitting machine 10 as an embodiment of the present invention. It is side surface sectional drawing which shows the schematic structure of the flat knitting machine 30 as other embodiment of this invention. It is the front view and top view which show the structure of the diameter-expansion member 15 shown in FIG. 1 and FIG. FIG. 3 is a plan view showing a configuration for knitting in the vicinity of the tooth opening 18 in the flat knitting machine 30 of FIG. 2. It is a figure which shows the relationship of the cam 40 attached to the needle cam attachment plate 49 of the carriage 41 of FIG. 2 and driving the knitting needle 33, and the sinker cam 43 in the same phase state. It is the front view and top view which show the structure of the sinker 1 for the conventional pile knitting.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10,30 Flat knitting machine 11,31 Front needle bed 12,32 Rear needle bed 13,14,33,34 Knitting needle 15 Diameter increasing member 18 Tooth 19 Supply yarn 20 Knitting yarn 21, 22 New stitch 23, 24, 25 Old Stitch 39 Pile yarn feeder 40 Cam 41, 42 Carriage 52 Diameter expansion part

Claims (4)

It has a pair of needle beds facing each other across the mouth, and feeds the knitting yarn so that it circulates in a certain direction, knitting the knitted fabric from the beginning to the end of the knitting width in each needle bed, and one of the needle beds In a flat knitting machine for knitting a tubular knitted fabric capable of knitting a knitted fabric into a tubular shape while connecting between the needle beds from the end of the needle bed to the beginning of the other needle bed,
It is formed adjacent to the knitting needle at the end of the knitting width in each needle bed, adjacent to the knitting needle in the direction of the knitting width, and the stitches locked to the knitting needle are knocked over and shifted to the mouth side. A diameter-expanding member capable of expanding the diameter of the old stitch,
Advancing and retreating mechanism that allows the tip of the diameter-expanding member to advance into the tooth mouth, or switches to retract from the tooth mouth, and allows the tip of the diameter-expanding member to enter the old stitch when entering the mouth.
A flat knitting machine for knitting a tubular knitted fabric. Each needle bed is provided with a movable sinker capable of moving the tip forward and backward between the knitting needles,
The diameter expanding member is provided by replacing a movable sinker,
The flat knitting machine for knitting a tubular knitted fabric according to claim 1, wherein a mechanism for advancing and retracting the movable sinker to and from the mouth is used as the advancing and retracting mechanism to advance or retract the tip of the diameter-expanding member to the mouth. In the flat knitting machine, as the knitting yarn, a ground yarn used for forming a basic portion of a tubular knitted fabric and a pile yarn which is added to each stitch of the basic portion to form a pile portion are arranged in parallel. Knitting pile tubular fabric,
The tubular shape according to claim 2, wherein the movable sinker is inserted between the ground yarn and the pile yarn when the new stitch is formed, and separates the ground yarn and the pile yarn. Flat knitting machine for knitting fabric. With a flat knitting machine having a pair of needle beds facing each other across the mouth, feed the knitting yarn so that it circulates in a certain direction, knitting the knitted fabric from the beginning to the end of the knitting width at each needle bed, In the knitting method of the tubular knitted fabric, the knitted fabric is knitted in a tubular shape while being connected between the needle beds from the end of one needle bed to the starting end of the other needle bed,
With respect to the knitting needle at the end of the knitting width at each needle bed, a diameter-expanding member capable of expanding the diameter of the old stitch is disposed adjacent to the knitting width in the direction of the starting end side. ,
When a new knitting yarn is fed to a knitting needle that is the end of the knitting width at each needle bed and a new stitch is formed, the stitch locked to the knitting needle is knocked over and moved to the mouth side. A method for knitting a tubular knitted fabric, wherein the diameter of the old stitch is expanded by causing the tip of the diameter-expanding member to enter the old stitch to be formed.

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