JP7233309B2 - flat knitting machine - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat knitting machine that knits gloves, socks, or the like with finger pouches as a tubular knitted fabric, and is provided with a stitch restraint plate for performing crotch overlap between finger pouches.

Conventionally, a flat knitting machine such as a glove knitting machine that sequentially knits toe pouches while performing crotch overlap has a pair of front and rear needle beds, and has a belt-like stitch restraining plate at the tip of the needle bed on the needle bed side. (See Patent Documents 1 and 2, for example). In Patent Document 1, the stitch holding plate corresponds to the stitch restraining plate. The needle bed has needle plates arranged at a constant pitch along the longitudinal direction. Knitting needles are housed in needle grooves between needle plates and arranged in the longitudinal direction of the needle bed, and the hooks at the tips of the knitting needles are advanced and retracted into the needle gap to knit the knitted fabric. The advance and retreat of the knitting needle is driven by a cam mounted on a carriage that reciprocates along the longitudinal direction of the needle bed.

The stitch deterrent plate has a stitch deterrent groove at a position spaced apart from the tip on the needle bed side toward the needle bed side. The stitch locking groove acts on the stitches of the crotch portion held by the knitting needles in the section where the crotch is overlapped from one side in the longitudinal direction. In order to activate the stitch deterrent groove, the stitch deterrent plate is moved from one side in the longitudinal direction to the other side. The stitches of the crotch portion are guided to move relative to the stitch deterrent plate and enter the stitch deterrent grooves. The knitting needles that hold the stitches in the toe part of the previously knitted finger stall stop the stitches on the needle stems directly above the stitch restraining grooves to prevent knockover. A portion of the knitting needle closer to the needle bed side than the stitch restraining piece is used for knitting the next finger stall up to the crotch portion. When the knitting of the next finger stall is completed, the stitch restraining plate is moved to one side in the longitudinal direction, and the stitch restraining groove is separated from the stitches of the crotch part to one side. The stitches of the crotch portion of the previously knitted finger stall return to the cuff side through the inclined portion of the stitch restraining plate, and overlap the stitches of the crotch portion of the next finger stall knitted on the crotch side. When knitting the knitted fabric of the body portion following the two finger stalls, the stitches of the two finger crotch portions are knocked over as double stitches to form a crotch-overlapped crotch portion.

Various cams including a movable cam are mounted on the carriage, and the movable cam is operated from the outside of the carriage via a control bar extending in the longitudinal direction of the needle bed (see, for example, Patent Document 3). The movable cam shown in FIG. 1 of Patent Document 3 includes a stitch cam 14 and a pressure cam 16 . FIG. 3 of Patent Document 3 shows a stitch restraining plate by hatching finer than the front needle bed on the tip side of the front needle bed indicated by reference numeral 10F and below the latch needle indicated by reference numeral S as a knitting needle. . Figure 3 also shows a needle plate behind the latch needle.

The stitch cam is movable so as to change the extent to which the knitting needle is pulled down to the needle bed side according to the stitch value corresponding to the size of the stitch when the stitch is formed. The pressure cam moves so as to act on the knitting needle that holds the stitch of the between-finger portion on the hook, pulls down the knitting needle toward the needle bed, and makes it easier for the stitch to enter the stitch restraining groove. When the stitch restraining plate moves in the longitudinal direction to cause the stitch to enter the stitch restraining groove, the upper surface of the stitch restraining plate slides between the bottom surface of the needle plate or the bottom surface of the knitting needle.

Japanese Patent No. 3053376 JP 2011-26741 A JP 2013-44077 A

2. Description of the Related Art In recent years, there has been a demand for flat knitting machines equipped with stitch restraining plates to knit thin gloves, such as coated gloves and gloves for precision work, using thin knitting yarns. However, when the knitting yarn becomes thin, problems tend to occur when the stitch restraining plate is pulled out from the crotch portion and the stitch held by the stitch restraining groove is returned along the inclined portion toward the needle bed side. A thin knitting yarn is easily caught and caught in a gap for sliding between the upper surface of the stitch restraining plate and the bottom surface of the needle plate or the bottom surface of the knitting needle. When the knitting yarn is caught in the gap, the state in which the previously knitted stitches of the toe part of the finger stall is not released continues. The stitches are pulled as the knitting of the knitted fabric of the trunk progresses, and then released and knocked over. A knitted fabric product with such a knockover delay becomes defective.

In the configuration disclosed in Patent Document 1, the end surface of the portion corresponding to the inclined portion of the stitch restraint groove is used as an inclined surface, and even a thin knitting yarn is caught in the gap between the upper surface of the stitch restraint plate and the bottom surface of the needle plate or the like. making it difficult. In the configuration disclosed in Patent Document 2, a receiving member regulates the stitch prevention plate so that it does not separate from the bottom surface of the needle plate or the like, and a gap is less likely to occur between the upper surface of the stitch prevention plate and the bottom surface of the needle plate or the like. are doing.

However, the needle plate is a plurality of plate-like members arranged side by side on the substrate of the needle bed to form the needle bed. Knitting needles are a plurality of needle-like members that are housed in needle grooves between needle plates and move forward and backward with respect to the needle bed gap. Since these members must slide between each other, they cannot be brought into close contact with each other, resulting in gaps in which fine knitting yarns are caught. When returning the previously knitted stitches in the crotch part of the finger pouch, which are held by the stitch restraining groove, along the inclined part to the tooth mouth side, the needle loop of the stitch pushes the needle stem of the knitting needle to the tip side of the hook. Moving. The moving needle loop passes over the latch with the hook closed. The circumference of the portion passing over the latch increases along the slope of the latch. The needle loop is resisted by an increase in circumference against movement, and if the resistance is large, smooth movement becomes difficult. The countermeasure for the shape of the stitch restraint groove as in Patent Document 1 and the countermeasure for the receiving member of the stitch restraint plate as in Patent Document 2 do not reduce the resistance received by the needle loop. Therefore, it is considered difficult to prevent narrow knitting yarns from getting caught in gaps when resistance is received when moving, with only these countermeasures.

An object of the present invention is to reduce the resistance received by the needle loops accompanying the movement of the stitch deterrent plate when stopping the action of the stitch deterrent plate to deter the knockover of the stitches in the crotch portion, thereby ensuring the knockover. To provide a flat knitting machine capable of

The present invention is a knitting cam mounted on a carriage that reciprocates in the longitudinal direction of the knitting needles that are arranged in the longitudinal direction of a pair of front and rear needle beds. In order to knit a tubular knitted fabric having a plurality of finger stalls while driving to advance and retreat to the gap between the crotch folds between the finger stalls knitted adjacently on one side in the longitudinal direction Equipped with a stitch restraining plate for performing
While the stitches of the toe part of the previously knitted finger stall are fastened to the needle stem of the knitting needle and held by the stitch restraining groove provided in the stitch restraining plate, and the next toe stall is knitted to the final course including the toe part. , in a flat knitting machine that suppresses knockover of held stitches,
It is mounted on the carriage and acts on the butt of the knitting needle that holds the stitch of the crotch part that suppresses knockover by the stitch suppression plate on the needle stem, and in the state that the stitch suppression plate suppresses the stitch, release on the needle bed side A flat knitting machine characterized by comprising a return cam having a cam surface for returning a knitting needle to a position.

Further, in the present invention, the butt is a mouth side butt that is provided closer to the mouth side than the drive butt and always protrudes,
It is characterized by further comprising a switching mechanism for switching whether or not the cam surface acts on the tooth mouth side butt.

Further, in the present invention, the return cam causes the stitch deterrent plate to act on the knitting needle holding the stitch of the toe part of the finger stall knitted earlier to the hook, thereby facilitating the guidance of the stitch to the stitch deterrent groove. a pressure cam for driving a drive cam surface provided on the needle bed side to act on the drive butt so as to pull the knitting needle toward the needle bed side,
A cam surface acting on the butt-side butt to return the knitting needle holding the stitch of the previously knitted crotch portion to the release position is provided on the side of the pressure cam.

Further, in the present invention, the return cam is a stitch cam that acts on the drive butt on the drive cam surface so as to pull the knitting needle toward the needle bed according to the size of the stitch to be formed,
A cam surface acting on the butt-side butt to return the knitting needle holding the stitch of the previously knitted crotch portion to the release position is provided on the tuft side of the stitch cam. .

Further, in the present invention, the return cam is a stitch cam that acts on the drive butt on the drive cam surface so as to pull the knitting needle toward the needle bed according to the size of the stitch to be formed,
A cam surface that acts on the drive butt to return the knitting needle holding the previously knitted stitch of the crotch portion to the release position is provided closer to the needle bed than the drive cam surface of the stitch cam (54). It is characterized by

Further, in the present invention, the return cam is a stitch cam that acts on the drive butt on the drive cam surface so as to pull the knitting needle toward the needle bed according to the size of the stitch to be formed,
After knitting the next finger bag, the stitch cam moves the knitting needle holding the stitch of the previously knitted between-finger portion to the release position by the knitting operation of the empty course without yarn supply. It is characterized by retracting and returning from the mouth.

Further, in the present invention, the return cam is a stitch cam that acts on the drive butt on the drive cam surface so as to pull the knitting needle toward the needle bed according to the size of the stitch to be formed,
Before knitting the next finger stall, the stitch cam causes the stitch restraining plate to act, and then, in a knitting operation of an empty course without yarn feeding, the stitches of the previously knitted finger crotch part are knitted. The knitting needle to be held is driven to be pulled back from the needle gap at least to the released position.

According to the present invention, the stop of the knockover inhibition of the stitches in the crotch portion by the stitch restraining plate moves the knitting needle that holds the previously knitted crotch portion stitches on the needle stem to the released position on the side of the needle bed. Let me do it. With this movement, the stitches are loosened with respect to the knitting needles. As the stitch restraining plate moves away from the crotch part in the longitudinal direction, the stitches of the crotch part move toward the tooth gap side along the inclined part of the stitch restraining plate, and knockover becomes possible with certainty.

Further, according to the present invention, the cam surface provided on the return cam so as to always act on the protruding butt is returned to the release position after knitting the next finger stall. The stitches of the toe part of the next knitted finger stall are not knocked over, and the stitches of the previously knitted toe part can be loosened from the knitting needle. The action of the return cam can be switched between action and non-action by a switching mechanism.

Further, according to the present invention, the pressure cam provided for facilitating the action of the stitch deterrent plate is a cam surface provided on the needle bed side, and presses the stitches of the crotch portion against the knitting needle before the action of the stitch deterrent plate is stopped. The knitting needle can be put back so that it loosens.

Further, according to the present invention, the stitch cam that is driven to pull the knitting needle toward the needle bed when forming the stitch is a cam surface provided on the needle bed side, and the stitch of the crotch portion is formed before the action of the stitch restraining plate is stopped. The knitting needle can be put back so as to loosen it against the knitting needle.

Further, according to the present invention, the stitch cam for driving the knitting needle to the needle bed side when forming the stitch is a cam surface provided on the needle bed side of the driving cam surface, and the finger cuff is formed before the action of the stitch restraining plate is stopped. The knitting needles can be returned so as to loosen the stitches of the part against the knitting needles.

Further, according to the present invention, after knitting the next finger stall, before pulling out the stitch restraining plate, the crotch portion that has been knitted previously and held on the needle stem of the knitting needle by the stitch restraining groove of the stitch restraining plate. The stitches can be loosened against the knitting needles in the knitting of the empty course.

Further, according to the present invention, after the stitch restraining groove of the stitch restraining plate is activated, the previously knitted stitches in the toe part of the finger stall are fastened to the needle stem of the knitting needle by the stitch restraining groove of the stitch restraining plate, Loosen against the knitting needle in knitting an empty course. Even after knitting the next finger stall, the stitch restraining plate can be easily removed from the finger crotch portion.

FIG. 1 is a main cam arrangement diagram showing the operation of a flat knitting machine 1 that is Embodiment 1 of the present invention. FIG. 2 is a cam layout diagram showing another operation of the pressure cam 16 of FIG. FIG. 3 is a side sectional view showing the configuration of the needle bed 3 and the knitting needles 4 used in the flat knitting machine 1 of FIG. FIG. 4 is a simplified side view showing the configuration around the hook 4a of the knitting needle 4 shown in FIG. FIG. 5 is a cam arrangement diagram of the carriages 10F and 10B used in the flat knitting machine 1 of FIG. FIG. 6 is a simplified side view showing a configuration for switching the operation of the pressure cam 16 in the flat knitting machine 1 of FIG. FIG. 7 is a main cam arrangement diagram showing the operation of the flat knitting machine 41 that is Embodiment 2 of the present invention. FIG. 8 is a main cam arrangement diagram showing the operation of the flat knitting machine 51 that is Embodiment 3 of the present invention. FIG. 9 is a diagram showing the operation of the flat knitting machine that is Embodiment 4 of the present invention. 10A and 10B are diagrams showing the operation of the flat knitting machine that is Embodiment 5 of the present invention.

1 to 6 below relate to the operation of the flat knitting machine 1 according to the first embodiment of the present invention and the configuration of the main parts. FIG. 7 relates to the operation of the flat knitting machine 41 that is Embodiment 2 of the present invention. FIG. 8 relates to the operation of the flat knitting machine 51 that is Embodiment 3 of the present invention. 9 and 10 relate to the operation of the flat knitting machine, which is Embodiment 4 and Embodiment 5 of the present invention, respectively. Corresponding parts in each figure are denoted by the same reference numerals, and redundant description may be omitted. Also, for convenience of explanation, parts not shown in the drawings to be explained may be referred to by attaching reference numerals shown in other drawings. The control required for switching in each embodiment is performed according to a procedure preset in control means such as a controller provided in the flat knitting machine 1 .

FIG. 1 shows a schematic configuration and operation of main parts of a flat knitting machine 1 that is Embodiment 1 of the present invention. The flat knitting machine 1 has a front needle bed 3F (to be described later) and a rear needle bed (not shown) as a pair of front and rear needle beds with the needle bed 2 interposed therebetween. In the following description, configurations related to the front needle bed 3F are numbered with F, configurations related to the rear needle bed are numbered with B, and only numbers are used when collectively referring to items common to the front and rear needle beds. attached. The needle bed 3 has a plurality of knitting needles 4 arranged side by side at a constant pitch along the longitudinal direction, which is the lateral direction in the figure. The knitting needle 4 has a hook 4a at the tip on the needle bed 2 side, a drive butt 4b on the needle bed 3 side away from the needle bed 2, and a needle bed butt 4c on the needle bed 2 side of the drive butt 4b. . The stitch restraining plate 5 is arranged on the bottom surface side near the tip of the knitting needle 4 . The operation of driving the knitting needle 4 before moving the stitch restraining plate 5 to the left is indicated by the trajectories of the tip portion of the knitting needle 4 near the hook 4a, the drive butt 4b, and the needle bed side butt 4c.

The stitch deterrent plate 5 has a stitch deterrent groove 5a at a position away from the needle bed 3 side from the tip on the needle bed 2 side. The stitch restraint groove 5a closes on the left side, which is one longitudinal side of the needle bed 3, and opens toward the needle bed 2 side while extending in the right direction, which is the other side. The upper edge of the stitch restraint groove 5a on the side of the needle bed 2 in the left direction of the opening becomes a stitch locking piece 5b, and the lower edge of the stitch restraint groove 5a on the needle bed 3 side in the right direction approaches the needle bed 2 side. It becomes an inclined portion 5c reaching the tip on the tooth gap 2 side. The stitch restraining plate 5 is movable in the longitudinal direction, and is used for performing crotch overlap between adjacent finger stalls 6 and 7 knitted. The stitch deterrent groove 5a is used so that the stitches forming the finger crotch portion 6a on the side of the finger stall 7 to be knitted next from the previously knitted finger stall 6 are inserted while being held by the hook 4a. When the knitting needle 4 is driven toward the needle gap 2 in the knitting of the next finger stall 7, the stitch of the toe part 6a moves from the hook 4a to the needle stem and is held in a range located directly above the stitch restraining groove 5a. retained. In the present embodiment 1, the four knitting needles 4 hold the stitches of the crotch portion 6a with the needle stems, and the next toe bag 7 is attached to the cuff 7 at a portion closer to the needle bed 2 than the stitch restraining piece 5b. Knit up to the final course including part 7a. The stitch deterrent groove 5a acts to deter knockover of the stitches of the finger crotch portion 6a held during knitting of the next finger stall 7. As shown in FIG. The number of knitting needles 4 used for holding and knitting the crotch portions 6a and 7a is appropriately determined according to the gauge number, which is the density of the stitches to be knitted, and the total number of knitting needles 4 used for knitting the finger pouches 6 and 7. can change.

When the knitting of the next finger stall 7 is completed, the stitch restraining plate 5 is moved leftward until the stitch restraining piece 5b is removed from the finger stall 7. - 特許庁The movement of the stitch restraint plate 5 is performed in a state in which the knitting needles 4 holding the stitches of the crotch portions 6a and 7a are returned to the release position. The release position is, for example, the tip position of the hook 4a of the knitting needle 4, which is the stitch reference position 2a or a position close thereto. The stitch reference position 2a is the position of the knitting needle 4 to be retracted corresponding to the stitch value 0 set in the stitch cam 14 corresponding to the size of the stitch to be formed. When the knitting needle 4 holding the stitch of the crotch portion 6a on the hook 4a is advanced to the needle bed gap 2, the stitch is cleared from the hook 4a to the needle stem side beyond the spatula. The stitch restraining plate 5 restrains the stitches from being knocked over even when the knitting needles 4 are retracted. When the knitting needle 4 is retracted toward the needle bed 3, the stitches of the crotch portion 7a are formed on the hook 4a, and the stitches of the crotch portion 6a of the finger bag 6 are held by the needle stem. The knitting needles 4 holding the stitches of the crotch portions 6a and 7b in this way are returned to the release position by the cam. The stitch restraining plate 5 moves leftward from the crotch portions 6a and 7a after the knitting needles 4 holding the stitches of the crotch portions 6a and 7a are returned to at least the release position. As the stitch restraining plate 5 moves leftward, the restraint of the stitches of the crotch portion 6a held by the needle stem of the knitting needle 4 is released, and the stitches move toward the needle bed gap 2 along the inclined portion 5a. . As will be explained with reference to FIG. 4, the stitches of the cuff portion 6a of the finger stall 6 reduce the resistance received when the needle stem of the knitting needle 4 moves toward the needle bed gap 2 side. The reduction in resistance makes it easier for the stitches to return to the needle bed 2 side without being caught when the stitches move along the inclined portion of the stitch restraint plate 5 . Since the knitting needle 4 is returned to the released position, the stitch of the crotch portion 6a stays on the needle stem without being knocked over, but can be reliably knocked over in the next knitting operation. The release position may be a retracted position in which the stitch remains on the needle stem without knocking over the latch even when the knitting needle 4 is retracted to the needle bed 3 side.

A carriage 10F that reciprocates in the longitudinal direction of the needle bed is equipped with cams including a stitch cam 14, a pressure cam 16 and a needle guide cam 17. As shown in FIG. The stitch cam 14 moves along the slanted guide groove 14a and is provided below the slanted cam surface 14b as the driving cam surface 14b for driving the driving butt 4b of the knitting needle 4 with a gap therebetween. and an auxiliary cam surface 14c. The stitch cam 14 pulls down the driving butt 4b, which is in the needle selection state, to the lower end along the inclination of the cam surface 14b according to the needle selection result, and the lower side of the driving cam surface 14b and the auxiliary cam surface 14c. Guide it to pass between the upper side. The pressure cam 16 moves along a vertical guide groove 16a. When the pressure cam 16 of the first embodiment is moved upward along the guide groove 16a, the pressure cam 16 comes into contact with the needle bed side butt 4c of the knitting needle 4 and pushes the knitting needle 4 until the tip of the hook 4a reaches the stitch reference position 2a. It has a return cam surface 16c on the top for driving to return to the tooth gap 2 side. The return cam surface 16c is on the right side of the needle guide cam 17 that pushes down the butt 4c, and always pushes the butt 4c in contact with the butt 4c upward to return the knitting needle 4. As shown in FIG. When using a movable sinker 8 as will be described later with reference to FIG.

FIG. 2 shows another movement of the pressure cam 16 of FIG. The pressure cam 16 has a drive cam surface 16b at its lower portion that moves downward along the guide groove 16a, abuts against the drive butt 4b, and drives the knitting needle 4 so as to pull it toward the needle bed 3 side. The driving butts 4b of the knitting needles 4 arranged on the right side of the knitting needles 4 drawn into the needle bed 3 are in a non-needle-selecting state because the knitting of the finger bag 6 is completed, and are not in contact with the driving cam surface 16b. . During this operation, the stitch deterrent groove 5a of the stitch deterrent plate 5 indicated by the chain double-dashed line in the drawing is separated leftward in the drawing. The pressure cam 16 pushes the knitting needle 4 holding the stitch of the toe part 6a on the hook 4a to the needle bed 3 side before the stitch restraining groove 5a acts on the stitch to be the toe part 6a of the previously knitted finger pouch 6. to make it easier for the stitches to enter the stitch restraint grooves 5a.

FIG. 3 shows the configuration of the needle bed 3 and the knitting needles 4 used in the flat knitting machine 1 of FIG. The needle bed 3 has needle plates 3b arranged at a constant pitch along the longitudinal direction perpendicular to the paper surface of the drawing with respect to the substrate 3a. The knitting needles 4 are housed in needle grooves between the needle plates 3b and arranged in the longitudinal direction of the needle bed 3, and the hooks 4a at the tips are advanced and retracted to the needle gap 2 to knit the knitted fabric. The advance and retreat of the knitting needle 4 is driven by a cam such as a stitch cam 14 mounted on a carriage 10 that reciprocates along the longitudinal direction of the needle bed 3 . The needle bed butt 4c is provided at the proximal end of the needle body 4d having the hook 4a at the tip, and always protrudes from the needle bed 3 toward the carriage 10 side. The distal end of the jack 4e is engaged with the proximal end of the needle body 4d. Jack 4e has a drive butt 4b spaced proximally from the distal end and is acted upon proximally by control jack 4f. The control jack 4f has a needle selection convex portion 4g that abuts on the outer circumference of the needle selection drum (not shown), and controls the needle selection pattern formed on the outer peripheral surface of the needle selection drum from the needle bed 3 of the drive butt 4b. The appearance and disappearance to the carriage 10 side is reflected. The needle selection method is not limited to the method using the needle selection drum. For example, a needle selection mechanism that can be switched by electrical control of the carriage 10 may be mounted. The driving butt 4b protrudes toward the carriage 10 in the needle selection state and does not protrude in the needle non-selection state according to the needle selection result.

FIG. 4 shows a simplified configuration of the vicinity of the hook 4a of the knitting needle 4 shown in FIG. 3 with respect to the front needle bed 3F. The knitting needle 4 has been returned to the release position by the operation shown in FIG. The position where the knitting needle 4 is pulled toward the needle bed 3 during stitch formation is below the drawing. The needle body 4d of the knitting needle 4 having the hook 4a at the tip thereof advances and retreats into the needle bed gap 2 along the needle bottom line 3Fc. The rear needle bed 3B side is indicated by a needle bottom line 3Bc. A vertical line 2v passing through the center of the needle bed gap 2 passes through the intersection of the needle bottom lines 3Fc and 3Bc. The needle bottom lines 3Fc and 3Bc are inclined so that the needle bed 2 side is higher and the needle bed 3F and 3B side is lower. The opening of the hook 4a of the knitting needle 4 is closed by being covered with a latch 4h when the stitch to be knocked over passes through. When the stitches of the cuff portion 6a escape from the stitch restraining grooves 5a of the stitch restraining plate 5, the stitches are pushed up by the inclined portions 5c shown in FIG. The portion 6b of the needle loop of the stitch of the crotch portion 6a that is hooked on the needle stem moves along the outer edge portion of the latch 4h that closes the hook 4a. A portion 6c of the needle loop that passes through the stitch restraint groove 5a returns to the tip of the stitch restraint plate 5 on the needle bed 2 side along the inclined portion 5c. Since the position of the knitting needle 4 before it is returned by the return cam surface 16c shown in FIG. By returning the knitting needle 4 to the release position, it is possible to reduce the degree of increase in resistance that the needle loop receives when moving compared to before the return.

A movable sinker 8 is preferably provided on the needle bed 3 on the needle bed 2 side. The movable sinker 8 is arranged between the knitting needles 4 in the longitudinal direction, and has a wall surface 8a for forming a sinker loop when the hook 4a forms a stitch, and a push-in portion 8b for pushing the stitch below the needle gap 2. . Such a movable sinker 8, which is not shown in the figure, is arranged slightly closer to the needle bed 3 than the stitch reference position 2a. The needle bottom line 3Bc on the side of the rear needle bed 3B is located on the needle bed 2 side of the stitch reference position 2a. In order to knit finger stalls sequentially, the knitting yarn passes between the first knitted finger stall and the set-up portion of the finger stall to be knitted next, so it is necessary to cut the crossover yarn and knit the end yarn. becomes. The devices necessary for such processing are moved closer to the needle bed 2 than the positions corresponding to the bottom lines 3Fc and 3Bc and the stitch density value of zero. If the release position is set at a position further advanced to the tooth gap 2, it is expected that the effect of reducing the increase in resistance received when the needle loop moves will be greater. However, in order to avoid interference with a device that moves on the needle bed 2 side, it is better that the release position does not exceed the position corresponding to the stitch value 0 or the needle bottom line 3Fc.

FIG. 5 shows the arrangement of cams mounted on the carriages 10F and 10B used in the flat knitting machine 1 of FIG. The front and rear carriages 10F and 10B reciprocate in conjunction with each other in the lateral direction of the drawing. A tubular knitted fabric knitted by the flat knitting machine 1 uses the front carriage 10F for movement to the left in the drawing, the rear carriage 10B for movement to the right, and the front and rear needle beds 3 are alternately used. and knit into a cylindrical shape. The front carriage 10F is equipped with a set-up cam 11 that enables knitting of stitches even when moving rightward in the figure. The set-up cam 11 is a retractable movable cam, and is used for setting-up using the knitting needles 4 on the front and rear needle beds 3 . The rubber crest cam 12 acts on the needle bed side butts 4c having different projection heights from the needle bed 3, and is used to insert the elastic yarn into the knitted fabric. The center cam 13, the stitch cam 14 and the needle raising cam 15 act on the selected drive butt 4b protruding from the needle bed 3 to guide it to form a stitch. The needle guide cam 17 and the Tenzan cam 18 restrict the advance of the knitting needle 4 toward the needle bed gap 2 side. 1 and 2 are performed by moving the front and rear carriages 10F and 10B leftward and simultaneously operating the pressure cam 16. As shown in FIG.

FIG. 6 shows the configuration of a switching mechanism for switching the operation of the pressure cam 16 in the flat knitting machine 1 of FIG. When the carriage 10 moves in the longitudinal direction of the needle bed 3, which is the direction perpendicular to the plane of the drawing, the movable cam is controlled from the outside of the carriage 10, as in Patent Document 3. Control over the movable cams is provided by control bars housed in grooves formed in control bar guides 20 . As control bars, a pressure cam control bar 21, a set-up cam control bar 22, a rubber crest control bar 23, and a stitch crest adjustment control bar 24 are provided. The pressure cam control bar 21 is driven to protrude from a groove provided in the control bar guide 20 toward the carriage.

FIG. 6 shows the switching state of the pressure cam 16, with (a) corresponding to FIG. 1 and (b) corresponding to FIG. The carriage 10 moves while being guided by the guide shaft 30 . The cams shown in FIG. 5 including the pressure cam 16 are provided on the bottom surface 31 of the carriage 10 . The surface side of the bottom surface 31 faces the upper surface of the needle bed 3 . A lever 32 , a moving member 33 , a support 34 and a spring 35 are provided on the back side of the bottom plate 31 . The lever 32 is swingable about an intermediate support shaft 32 a , with one end abutting the pressure cam control bar 21 and the other end engaging the moving member 33 . The moving member 33 is connected to the pressure cam 16 via the guide groove 16a. A spring 35 hooked between the moving member 33 and a support 34 erected on the bottom plate 31 urges one end of the lever 32 to contact the pressure cam control bar 21 . The pressure cam control bar 21, the lever 32, the moving member 33, the strut 34, and the spring 35 form a switching mechanism for switching whether or not the return cam surface 16c of the pressure cam 16 acts on the tooth mouth side butt 4c. . The switching mechanism is not limited to this driving method, and for example, a driving source such as a motor or solenoid may be mounted on the carriage 10 .

In the first embodiment, the state (b) is set immediately before the stitch restraining groove 5a is activated, and the state (a) is set otherwise. Such switching of the pressure cam 16 is similar to the conventional one. However, the conventional pressure cam is not provided with the return cam surface 16c. When the pressure cam 16 having the return cam surface 16c is used as in the first embodiment, the action shown in FIG. 1 is performed by acting on the mouth side butt 4c to return, so that it can always be performed regardless of needle selection. Therefore, the knitting needle 4 is retracted not only when the finger bags 6 and 7 are sequentially knitted by activating the stitch restraint groove 5a, but also when knitting other parts such as the trunk of the glove. The return of the knitting needles 4 may be performed only after the knitting of the last course of the next finger bag 7 or after the knitting of the last course by providing a dedicated empty course in which the knitting needles are driven along the knit route without supplying the yarn. . If the cam arrangement allows selection of the tack route, the tack route may be used for the empty course. An intermediate stage between (a) and (b) is provided in the movement of the pressure cam 16 so that the drive cam surface 16b and the return cam surface 16c do not act on the drive butt 4b and tooth mouth side butt 4c in the intermediate stage. It is also possible to perform the same operation as before.

According to the first embodiment, the pressure cam 16 provided for facilitating the actuation of the stitch restraining groove 5a is driven so as to return the knitting needle 4 to the needle bed gap 2 side before stopping the action of the stitch restraining groove 5a. is also available. It is also possible to adjust the amount of return by the return cam surface 16c, or to integrate the needle guide cam 17 with the pressure cam 16 and move it up and down.

FIG. 7 shows the schematic configuration and operation of the main parts of a flat knitting machine 41, which is Embodiment 2 of the present invention, with respect to the carriage 40F on the side of the front needle bed 3F. In the second embodiment, a return cam surface 44c is provided on the needle bed side butt 4c of the stitch cam 44, and the knitting needle 4 holding the stitch of the crotch portion 6a is moved to the stitch reference position 2a by the action of the needle bed side butt 4c. I am trying to return to the release position such as. Returning to the fistula 2 side is performed using the fistula-side butt 4c, so it can be performed regardless of the needle selection result. It can be done later or with a dedicated empty course. The carriage on the rear needle bed side can also be returned by the stitch cam. The pressure cam 46 pulls down the stitch before the stitch restraining plate 5 acts on the crotch portion 6a.

According to the second embodiment, the return cam surface 44c is operated every time the knitting needle 4 is retracted to the needle bed 3 side so that a stitch having a size corresponding to the stitch density is formed by the drive cam surface 44b acting on the drive butt 4b. Provided on the mountain cam 44 . After the knitting of the next finger stall 7 , the stitch cam 44 can be driven so as to return the knitting needle 4 holding the stitches of the toe part 6 a of the previously knitted finger stall 6 to the needle gap 2 side.

FIG. 8 shows the schematic configuration and operation of the main parts of a flat knitting machine 51 that is Embodiment 3 of the present invention, with respect to the carriage 50F on the front needle bed 3F side. On the rear needle bed side, similarly to the stitch cam 14 in FIG. 5, the stitch cam 54 is displaced diagonally. need to make it happen. In the third embodiment, when the drive butt 4b passes through the return cam surface 54c facing the lower end of the inclined drive cam surface 54b of the stitch cam 54, the knitting needles 4 of the crotch portions 6a and 7a are returned to the release position. . After the stitches of the next toe bag 7 are knitted to the final course, only the drive butt 4b of the knitting needle 4 holding the stitch of the toe part 6a is put into the needle selection state as indicated by the solid line, and the drive butts of the other knitting needles 4 are brought into the selected state. 4b is set to the non-selection state as indicated by the dashed line. Since the driving butt 4b in the needle selection state is guided by the needle raising cam 15 to the knitting route that advances the knitting needle 4 to the needle bed 2 side via the intermediate cam 13, the needle raising cam 15 is made retractable and returned. In the case of

In Embodiments 2 and 3, driving for switching the stitch cams 44 and 54 is performed via a switching mechanism including the stitch cam adjustment control bar 24 of FIG. When the stitch restraining plate 5 is pulled out in the second and third embodiments, it is preferable to stop the carriage 10 while the knitting needle 4 in the crotch portion 6a is returned to the release position. In Example 1, Example 2, and Example 3, returning the knitting needle 4 to the release position loosens the stitch held on the needle stem, and also has the effect of reducing the resistance received during knockover.

FIG. 9 shows the operation of the flat knitting machine that is Embodiment 4 of the present invention. (a) schematically shows the finger pouches 6, 7 and the body portion 9 knitted in the fourth embodiment. (b) shows the knitting procedure of the finger stall 7. FIG. In the present embodiment 4, after knitting the finger stall 7 following the finger stall 6 up to the final course 7y, one or more empty courses in which the knitting needles 4 are moved to the knitting root without supplying the yarn are performed as the empty course 7z. insert as The tack route may be an empty course as long as the cam arrangement allows selection of the tack route. The finger bag 7 is knitted sequentially from the last course 7x to the final course 7y for the whole including the finger crotch portion 7a, and the position where the knitting needle 4 is retracted to the needle mouth side by inserting the empty course 7z is the last course 7y. It is returned to the release position on the tooth gap 2 side from the retracted position. The advancing and retreating of the knitting needle 4 on such an empty course 7z accompanies the movement of the stitch of the crotch portion 6a held on the needle stem of the knitting needle 4, and the stitch can be loosened with respect to the knitting needle 4. Next, after pulling out the stitch restraining plate 5 to the left, the first course 9c of the trunk portion 9 and other finger stalls are knitted.

The fourth embodiment can be realized by the flat knitting machine 51 of the third embodiment. However, the stitch cam 54 does not need to be provided with the return cam surface 54c for the knitting needle 4, and when using the stitch cam 14 shown in FIG. be able to. The pressure cam 16 may not be provided with the return cam 16c. In the first empty course 7z following the final course 7y, the hooks 4a of the knitting needles 4 holding the stitches formed in the final course 7y of the finger stall 7 are advanced into the needle gap 2, the stitches of the finger stall 7 are cleared, and the hooks 4a are formed. to the needle stem. The knitting needle 4 is retracted to the release position by the stitch cam 14 . Since the stitches are retracted to the release position, the stitches of the crotch portion 7a are not knocked over. The stitches of the crotch portion 7a are knocked over by the knitting operation of the first course 9c of the trunk portion 9 together with the stitches of the crotch portion 6a which move after the stitch restraint plate 5 is pulled out to the left. The knitting procedure as shown in (b) can be realized by changing the control data. The width of the empty course 7z should just include the crotch portions 6a, 7a.

FIG. 10 shows the operation of the flat knitting machine that is Embodiment 5 of the present invention. (a) schematically shows finger pouches 6 and 7 knitted in the fifth embodiment. (b) shows the knitting procedure of the finger stalls 6 and 7. FIG. In the fifth embodiment, the entire finger stall 6 including the crotch portion 6a is knitted sequentially from the course 6x to the final course 6y, and then the stitch restraining plate 5 is advanced to the right. The finger stall 7 inserts one or more empty courses 7z before starting to knit the first course 7f.

In the fifth embodiment, the stitches of the crotch portion 6a are restrained by the stitch restraining plate 5 and remain on the needle stem of the knitting needle 4 without being knocked over. can be done. Therefore, the empty course 7z of Example 5 can be retracted to at least the release position as in Examples 1 to 4, and the knitting needle 4 advanced to the needle bed gap 2 can be returned. As in the case of the fourth embodiment, the fifth embodiment can also be realized by changing the control data in the flat knitting machine 51 and the stitch cam 14 shown in FIG. The effect and width of the empty courses 7e and 7z are the same as in the fourth embodiment.

In Examples 2 and 3, it is preferable that the carriage 10 is stopped in a state in which the knitting needle 4 holding the stitch of the between-finger portion 6a is returned to the releasing position before the stitch restraining plate 5 is pulled out. Further, in Examples 1 to 5, the stitch cams 14, 44, 54 and the pressure cam 16 conventionally mounted on the carriage 10 are also used to return the knitting needle 4, but a dedicated cam is provided. good too.

1, 41, 51 flat knitting machine 2 needle bed 3 needle bed 3a substrate 3b needle plate 3F front needle bed 4 knitting needle 4a hook 4b drive butt 4c needle bed side butt 5 stitch restraining plate 5a stitch restraining groove 5b stitch locking piece 5c inclination Parts 6, 7 Finger bags 6a, 7a Finger crotch parts 10, 10F, 10B, 40F, 50F Carriages 14, 44, 54 Angle cams 14b, 16b, 44b, 54b Drive cam surface 16 Pressure cams 16c, 44c, 54c Return cam Surface 21 Pressure cam control bar 31 Bottom plate 32 Lever 33 Moving member 34 Post 35 Spring

Claims (7)

A knitting cam is mounted on a carriage that reciprocates in the longitudinal direction of a pair of front and rear needle beds. A stitch restraining plate for performing crotch overlap between finger stalls adjacent in the longitudinal direction when knitting a tubular knitted fabric having a plurality of finger stalls while being driven to advance and retreat toward the needle stall,
While the stitches of the toe part of the previously knitted finger stall are fastened to the needle stem of the knitting needle and held by the stitch restraining groove provided in the stitch restraining plate, and the next toe stall is knitted to the final course including the toe part. , in a flat knitting machine that suppresses knockover of held stitches,
It is mounted on the carriage and acts on the butt of the knitting needle that holds the stitch of the crotch part that suppresses knockover by the stitch suppression plate on the needle stem, and in the state that the stitch suppression plate suppresses the stitch, release on the needle bed side A flat knitting machine comprising a return cam having a cam surface for returning a knitting needle to a position. the butt is a tooth mouth side butt that is provided closer to the tooth mouth side than the drive butt and always protrudes;
2. The flat knitting machine according to claim 1, further comprising a switching mechanism for switching whether or not said cam surface acts on said butt. The return cam causes the stitch deterrent plate to act on the knitting needle that holds the stitch of the toe part of the previously knitted finger stall on the hook, thereby facilitating the guidance of the stitch to the stitch deterrent groove. a pressure cam that causes a drive cam surface provided on the bed side to act on the drive butt to drive the knitting needle so as to pull it toward the needle bed side;
A cam surface that acts on the butt to return the knitting needle that holds the stitch of the previously knitted crotch portion to the release position is provided on the side of the neck of the pressure cam. Item 3. The flat knitting machine according to item 2. The return cam is a stitch cam that acts on the drive butt on the drive cam surface so as to pull the knitting needle toward the needle bed according to the size of the stitch to be formed,
A cam surface acting on the butt-side butt to return the knitting needle holding the stitch of the previously knitted crotch portion to the release position is provided on the tuft side of the stitch cam. The flat knitting machine according to claim 2. The return cam is a stitch cam that acts on the drive butt on the drive cam surface so as to pull the knitting needle toward the needle bed according to the size of the stitch to be formed,
A cam surface acting on the driving butt to return the knitting needle holding the stitch of the previously knitted crotch portion to the release position is provided closer to the needle bed than the driving cam surface of the stitch cam. 2. The flat knitting machine according to claim 1. The return cam is a stitch cam that acts on the drive butt on the drive cam surface so as to pull the knitting needle toward the needle bed according to the size of the stitch to be formed,
After knitting the next finger bag, the stitch cam moves the knitting needle holding the stitch of the previously knitted between-finger portion to the release position by the knitting operation of the empty course without yarn feeding. 2. The flat knitting machine according to claim 1, wherein the flat knitting machine is retracted from the mouth and returned. The return cam is a stitch cam that acts on the drive butt on the drive cam surface so as to pull the knitting needle toward the needle bed according to the size of the stitch to be formed,
Before knitting the next finger stall, the stitch cam causes the stitch restraining plate to act, and then, in a knitting operation of an empty course without yarn feeding, the stitches of the previously knitted finger crotch part are knitted. 2. The flat knitting machine according to claim 1, wherein the knitting needle to be held is driven to be retracted from the needle gap at least to the released position.

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