KR20080003229A - Yarn cutting and retaining device, and flat knitting machine - Google Patents

Abstract

A knitting yarn holding and cutting apparatus and a flat knitting machine are provided to hold and unfix ends of knitting yarns independently of each other, and reduce the installation space, by using two holding units. A driving pin member(15) is mounted near an end of a driving lever(13) installed at an output shaft(13a) of a motor(13). The driving pin member is commonly inserted into a long hole of a link member(16) for cutter and a circular arc-shaped grooves of link members(17,18) for looper. The link member for cutter transmits a driving force for driving a cutter(10) by output of the motor. The link members for looper transmits and converts a driving force for selectively driving respective loopers(11,12) by output of the motor. The loopers, when descending, hold knitting yarns(6,7) between knitting yarn holding levers(19,20) by hook-shaped portions thereof, respectively.

Description

Knitting support cutting device and flat knitting machine {YARN CUTTING AND RETAINING DEVICE, AND FLAT KNITTING MACHINE}

1 is a front view schematically showing a partial configuration of a flat knitting machine 2 including a knitting support cutting device 1 as an example of the embodiment of the present invention.

FIG. 2 is a side view showing a configuration mainly related to the looper 11 of FIG.

3 is a side view showing a state in which the looper 11 of FIG. 2 catches the knitting yarn 6 supplied from the yarn feeding port 8 to the needle bed gap 4 and is held between the knitting yarn holding levers 19.

Fig. 4 is a front view and a side view showing the combined state of the drive lever 14 and the drive pin member 15 of Fig. 1, and the configurations of the looper link members 17 and 18, respectively.

5 is a plan view and a side view showing an enlarged configuration of the knitting support levers 19 and 20 of FIG.

FIG. 6 is an exploded perspective view of the main part of the knitting support cutting device 1 of FIG.

FIG. 7 is a side view showing a configuration for driving the cutter 10 of FIG.

FIG. 8 is a side view showing the configuration of the looper 11 in the reference state of the knitting support cutting device 1 of FIG. 1 and the configuration of the cutter 10, respectively.

Fig. 9 is a side view showing a state in which the drive lever 14 is angularly displaced about 90 degrees clockwise from the reference state of Fig. 8.

Fig. 10 is a side view showing a state in which the driving lever 14 is angularly displaced about 135 degrees clockwise from the reference state of Fig. 8.

FIG. 11 is a side view showing a state in which the driving lever 14 is angularly displaced by about 170 degrees clockwise from the reference state of FIG.

FIG. 12 is a side view showing a state in which the drive lever 14 is rotated counterclockwise from the state of FIG. 11 and is angularly displaced about 55 degrees clockwise from the reference state of FIG.

*** Description of the symbols for the main parts of the drawings ***

1 knitting support cutting device

2 flat knitting machine 3 needle bed

4 needle bed gap 5 knitted fabric

6, 7 knitting yarns 8, 9 yarns

10 cutter 10a movable member

10b fixing member 11, 12 looper

13 motor 14 drive lever

15 Drive pin section 15a Cutting section

16 Cutter link member

17, 18 looper link member

17a, 18a circular groove 17e, 18e epicenter

19, 20 knitting support lever

28 Cutter drive cam member

34 Slant pin

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a knitting support cutting device for supporting and cutting a knitting yarn supplied for knitting a knitting fabric from a feeding yarn, and a flat knitting machine including such a knitting support cutting device.

Background Art Conventionally, a knitting knitting device has been used to continuously knit a product by a flat knitting machine and to cut each product separately (for example, refer to Patent Document 1). The knitting gripping apparatus disclosed in Patent Document 1 is a knitting end of a knitted fabric in a state in which a pair of nip pawls are opened from below a needle bed gap or below a needle bed gap side end. It raises in the path | route of the knitting yarn which spreads from the yarn feeder from the surface, closes and grips a nip pole, and lowers the nip pole which grasped the knitting yarn to support a knitting yarn. This lifting and lowering operation of the nip pole is performed by converting the rotational output of the motor into a linear output by the rack and the pinion. The opening and closing operation of the nip pole is performed by converting the lifting operation by the link mechanism. The knitting yarn supported by the knitting gripping device is cut by the knitting cutting device provided on the knitting fabric side rather than the knitting gripping device. The knitting gripping apparatus supports the end of the cut knitting yarn, and when knitting of the next product starts, the nipple pole is opened to release the end of the supporting yarn as necessary.

Patent Document 1 also discloses a configuration of a knitting yarn holding device in which two pairs of knitting holding devices as described above are mounted, and one pair of knitting cutting devices is mounted. This knitting holding device is also used in the same product to cut the knitting yarn so as not to cause the crossing yarn in the case where long cross yarns are generated between the regions, for example, when the areas knitted using one knitting yarn are separated. do.

Patent Document 1: Japanese Patent Application Laid-Open No. 4-74463

The knitting holding device, which is equipped with two pairs of knitting holding devices and one pair of knitting cutting devices disclosed in Patent Literature 1, is used for each knitting cutting device when each knitting holding device independently supports and supports knitting. You can also cut independently. Knitting support capable of cutting a plurality of knitting yarns in the middle of knitting and supporting the ends of the yarns in order to omit the complexity of post-processing in knitting various knitted fabrics by a flat knitting machine and to efficiently knit them. A cutting device is needed. However, since the knitting support cutting device is provided below the needle bed gap or below the needle bed gap side, the space that can be installed is small. The knitting holding device disclosed in Patent Literature 1 requires three motors or the like as a driving source, and therefore the installation space and the like become large.

An object of the present invention is to provide a small knitting support cutting device and a flat knitting machine which can independently support and release the ends of the knitting yarn by two supporting mechanisms, and can make the installation space small.

The present invention is provided on the outside of the range of knitting needles used to knit a knitting fabric with a flat knitting machine, and is opened and closed to individually capture, support and release the knitting yarns from the knitting fabric to the yarn feeding port located outside of the range. And a support mechanism capable of lifting up and down, and a cutting tool tool for cutting the knitting yarn supported by the support mechanism on the knitting fabric side.

A drive source capable of converting the rotational direction of the output shaft,

Selectively actuate one of the support mechanisms on the one side or the support mechanism on the other side along the direction of the angular displacement from the predetermined reference state by the output shaft to open and raise the support mechanism to operate when the angle difference with the reference state increases. A selective drive mechanism for lowering and closing the support mechanism when the difference is reduced;

In the selective drive mechanism, when the angle difference with the reference state increases and decreases,

Knitting support cutting device characterized in that it comprises.

In the present invention, the selection drive mechanism,

A drive pin parallel to the output shaft of the drive source and pivotally displaced according to the angular displacement of the output shaft;

Two link members having arcuate grooves into which drive pins are inserted.

Including,

In the reference state, a driving pin is commonly inserted into one end of the arc-shaped groove of one link member and the other end of the arc-shaped groove of the other link member.

The drive pin is inserted into the other link member at the end of the arc-shaped groove while the drive pin passes through the arc-shaped groove of one link member in which the output shaft is converted along the direction of the angular displacement from the reference state. It is characterized in that driven in conjunction with the state.

Moreover, in this invention, the said drive pin is provided with the cross-sectional shape by which the part inserted in the said arc-shaped groove is cut | disconnected a part of a circle,

The arc-shaped groove of the link member has a shape in which a section having a circular cross section is insertable at an end portion at which the driving pin is commonly inserted in the reference state, and at the portion except the end portion, the circular shape is provided. It is characterized in that it has a width that does not pass the phosphorus portion can pass through the cut cross-sectional shape.

In the present invention, the cutting drive mechanism is characterized by having a long hole into which the driving pin is inserted, and a link member for stopping the operation of the cutting tool while the driving pin passes through the long hole.

Moreover, in this invention, the support mechanism of the side close to a cutting device among the said two support mechanisms is when the knitting yarn of the part which spreads from the said support mechanism to the yarn feeder located in the outer side of the said knitting needle at the time of raising of the other support mechanism is raised. When the knitting yarn is supported so as not to be picked up, it is characterized by including a projection for deviating the position of the portion over the yarn feeding port.

Moreover, this invention is a flat knitting machine characterized by including any one of said knitting support cutters.

(Example)

1-12 shows the schematic structure of the knitting support cutting device 1 as an example of embodiment of this invention. In the following description, the parts corresponding to the above described parts are denoted by the same reference numerals and redundant descriptions thereof will be omitted.

Fig. 1 is a simplified illustration of a partial configuration of a flat knitting machine 2 having a knitting support cutting device 1 of this embodiment. The knitting support cutting device 1 is provided below the needle bed gap 4 to which the needle bed 3 before and after the front side knitting machine 2 including the needle bed 3 before and after or below the side end outer side of the needle bed gap 4. In the flat knitting machine 2, the knitting fabric 5 can be knitted separately in each needle bed 3, or the knitting fabric can be knitted in a tubular shape while connecting the both ends of the knitting stage by circumferentially knitting the needle bed 3 before and after. The knitted fabric 5 is knitted by knitting knitting needles 6 and 7 from the yarn feeding ports 8 and 9 so that the knitting needle of the needle bed 3 is knitted.

The knitting support cutting device 1 includes a cutter 10 which is a cutting tool and two loopers 11 and 12. The loopers 11 and 12 can be lifted and displaced individually, and they can advance up to the needle bed gap 4 when raised. The yarn feeder etc. provided with the feed yarns 8 and 9 at the lower end run from the upper side of the needle bed gap 4 above the side end outer side of the needle bed 3. The knitting yarns 6 and 7 used for knitting of the knitting fabric 5 and suspended are suspended from the knitting fabric 5 between the yarns 8 and 9. On the other hand, if the looper 11 is raised as shown by the two-dot chain line, the knitting yarn 6 can be captured. When the looper 11 which catches the knitting yarn 6 falls, it is difficult for the looper 12 to pick up the knitting yarn 6 captured by the looper 11 even when another looper 12 rises. In the knitting support cutting device 1, two loopers 11 and 12 can be selectively operated using a single motor 13 as a drive source. The cutter 10 also works with either looper 11 or 12. As the motor 13, a stepping motor can be used, for example. Servo motors can also be used. In addition, the output shaft 13a may not only directly extract the rotational output of the motor, but may also be pulled out through the transmission mechanism.

The drive lever 14 is attached to the output shaft 13a of the motor 13 serving as the drive source. The drive lever extends outward in the radial direction of the output shaft 13a. The drive pin member 15 is mounted near the tip of the drive lever 14. The drive lever 14 and the drive pin member 15 may be integrated or may be separate. The driving pin member 15 is commonly inserted into the cutter link member 16 and the long hole 16a of the two looper link members 17 and 18 and the arc-shaped grooves 17a and 18a. The cutter link member 16 functions as a cutting drive mechanism that transmits a driving force for operating the cutter 10 by the output of the motor 13. The looper link members 17 and 18 are responsible for the transmission and conversion of the driving force for selectively operating the loopers 11 and 12 by the output of the motor 13. In each looper 11 and 12, the hook-shaped part of the upper end pinches and supports the knitting yarns 6 and 7 between the knitting support levers 19 and 20, respectively. The loopers 11 and 12 and the knitting support levers 19 and 20 constitute two support mechanisms.

Referring to FIG. 6, in the knitting support cutting device 1, the looper block attachment base 21 becomes a structural base. The looper block mount 21 is provided with a groove extending in the vertical direction, and a substantially columnar looper block 22 is inserted into the groove and joined. In the looper block 22, two loopers 11 and 12 are inserted and grooves 22a and 22b extending in the vertical direction are formed side by side. The motor base 23 extends downward from the looper block mount 21, and the motor 13 is mounted near the lower end. The loopers 11 and 12 inserted into the grooves 22a and 22b of the looper block 22 are pressurized by the looper pressing plate 24 so as not to fall out of the grooves 22a and 22b.

The looper link members 17 and 18 are supported while being lowered by the lower ends of the looper springs 25 and 26, respectively. The upper end of the looper spring 25 for hanging the looper link member 17 is supported by a spring hook pin 27 that is formed standing on the motor base 23. The upper end of the looper spring 26 is supported by the same spring hanger pin as described later. These drive levers 14 and drive pins 15 and looper link members 17 and 18 constitute a selection support mechanism.

In the looper block 22 in Fig. 1, the cutter drive cam member 28 is supported on the needle bed 3 side so as to be movable. The upper portion of the cutter drive cam member 28 has a board shape, and a cam groove 28a having a substantially inclined shape is formed. The cutter drive cam member 28 can be integrally formed by molding, cutting or the like, but can also be formed by combining a plurality of members. In order to support the cutter drive cam member 28 in a movable manner, a cam presser 29 is used. The cam plate presser 29 is a leaf spring, and the cutter drive cam member 28 is pushed so that the cutter drive cam member 28 does not lower by its own weight or the like and slides only by the drive by the cutter link member 16.

The cutter 10 is pressed by the cutter presser 30. The cutter presser 30 is attached to the upper portion of the cutter block 31. On the right side of the cutter block 31 in Fig. 6, a groove 31a to which the cutter drive cam member 28 is engaged is formed. The cam plate presser 30 sandwiches the rear side of the portion where the groove 31a is formed by the cutter block 31 between the cutter drive cam member 28 coupled to the groove 31a, and the cutter drive cam member 28 with respect to the cutter block 31. To support the sliding displacement. The cutter block 31 is attached to and supported by the looper block 22.

When loopers 11 and 12 are raised while loopers 11 and 12 hold and hold knitting yarns 6 and 7 between the knitting support levers 19 and 20, the knitting yarns 6 and 7 can be released. When loopers 11 and 12 are raised to release the knitting yarns 6 and 7 reliably, and the knitting yarns 6 and 7 are released, the compressed air is supplied from the outside to the air pipe joint 32 attached to the looper block 22. It blows off from the nozzle 32a provided in the looper block 22 shown. The nozzle 32a is provided with respect to the knitting support levers 19 and 20, respectively. The reference state for selectively driving the loopers 11 and 12 can be confirmed by detecting the position of the driving lever 14 by the sensor 33.

Of the two loopers 11 and 12, the looper 11 closer to the side end of the needle bed 3 is supported by the upper part of the looper 11 and the knitting support lever 19 in the state of supporting the end of the yarn of the knitting yarn 6, for example. There is a fear that the portion of the knitting yarn 6 extending from the portion to the yarn feeding port 8 may be captured by the rise of another looper 12. In order to prevent such a malfunction, the inclined pin 34 is formed on the knitting support lever 19, and when the knitting 6 is supported, the inclined pin 34 is inclined to the front side of the drawing so that the path of the knitting yarn 6 spanning the yarn feeder 8 is routed to the looper 12. At the time of rise, it is set out from the range which can be captured.

2 mainly shows the configuration of the looper 11. FIG. The configuration of the looper 12 is basically the same except that the inclined pin 34 is not formed on the knitting support lever 20. The knitting support lever 19 is rotatably supported about the upper end of the looper block 22 about the rotational axis 35 and is pressed counterclockwise in the drawing by the spring 36. A looper groove 19a is formed in the knitting support lever 19 so that an upper portion of the looper 11 can pass therethrough. As shown by the broken line, when the looper 11 is raised, the front needle bed 3f and the rear needle bed 3b project upwardly of the opposing needle bed gap 4 to reach a position higher than the yarn feed port 8. The yarn feeding port 8 passes a position of an appropriate height to feed the knitting needles 3fn and 3bn from the front and rear needle beds 3f and 3b to the needle bed gap 4 to knit the knitted fabric. When the raised looper 11 is lowered, the tip enters the looper groove 19a of the knitting support lever 19 as indicated by the solid line in the reference state. The support mechanism of one knitting yarn is composed of a knitting support lever 19 in which a looper groove 19a is formed together with a looper 11. The other knitting support mechanism is composed of a looper 12 and a knitting support lever 20. That is, the knitting yarns 6 and 7 are supported or released by opening and closing between the loopers 11 and 12 and the knitting support levers 19 and 20. Moreover, when releasing the knitting yarns 6 and 7 between the loopers 11 and 12 and the knitting yarn holding levers 19 and 20, air is blown out from the nozzle 32a.

The looper link members 17 and 18 have a board-like shape as a whole with a substantially upper half in a straight line shape and a lower half in a semicircle shape. Semicircular arc-shaped grooves 17a and 18a are formed in the semicircular portions of the looper link members 17 and 18, respectively. In the vicinity of the middle of the semicircular portion, protrusions 17b and 18b are formed to protrude outward in the radial direction, respectively. The projections 17b and 18b of the linker 17 and 18 for the looper make contact with the contact pins 37 and 38 respectively formed on the motor base 23 in the reference state. The upper end of the looper spring 26 which suspends the linker 18 for looper is formed by a spring hook pin 39 which is formed on the motor base 23, similarly to the upper end of the looper spring 25 supported by the spring hook pin 27 in FIG. Supported. The upper end of the linker 17 for the looper is pinned to the lower end of the looper 11 through the connecting member 40.

Fig. 3 shows a state in which the looper 11 of Fig. 2 catches the knitting yarn 6 supplied from the yarn feeding port 8 to the needle bed gap 4 and is held between the knitting yarn holding levers 19 and held. When the knitting yarn 6 is sandwiched between the upper lower end of the looper 11 and the looper groove 19a of the knitting support lever 19, the knitting support lever 19 is rotated and displaced against the pressure of the spring 36 by the lowering of the looper 11, and the inclined pin 34 is also shown. Slopes to the right. In the direction in which the inclined pin 34 is inclined, there is a portion where the supported knitting yarn 6 spans the steep hole 8, so that the position of the knitting yarn 6 is shifted by the inclination of the inclined pin 34 and evacuated outside the capture range of the other looper 12. Can be.

Fig. 4 shows the combined state of the drive lever 14 and the drive pin member 15 in (a), and the configurations of the looper link members 17 and 18 in (b) and (c), respectively. The drive pin member 15 has an arrow-shaped cross-sectional shape in which a portion inserted into the arcuate grooves 17a and 18a of the looper link members 17 and 18 is not a circle but a cut portion 15a and a portion is a straight string. do. At the upper end of each of the looper link members 17 and 18, connection holes 17c and 18c for connecting with the lower ends of the loopers 11 and 12 are formed, respectively. Further, spring hook holes 17d and 18d for hooking the lower ends of the looper springs 25 and 26 shown in Fig. 2 are formed near the middle of the upper half and the lower half of the looper link portion members 17 and 18, respectively. The lower ends of the arc-shaped grooves 17a and 18a are the circular portions 17e and 18e into which the circular portions of the driving pin member 15 can be inserted. The other portions of the arcuate grooves 17a and 18a are smaller than the width through which the circular portion of the drive pin member 15 can pass, and the cutting portion 15a is formed to have a width that can pass through the inner circumferential side of the arcuate grooves 17a and 18a. have.

5 shows an enlarged configuration of the knitting support levers 19 and 20. (a) is a top view, (b) shows the front view of the knitting support lever 19, respectively. In the arms extending in the transverse direction of each knitting support lever 19, 20, looper grooves 19a, 20a through which the upper portions of the loopers 11, 12 can pass are formed, respectively. In the vicinity of the tip of the arm of the knitting support lever 19, a projection 19b for accommodating the upper end of the spring 36 shown in Fig. 2 is formed to protrude downward. The same projection 20b is formed also in the knitting support lever 20. On the upper surfaces of the arms of the knitting support levers 19 and 20, knitting grooves 19c and 20c, which serve as a passage when the knitting yarn is supported, are also formed, respectively. Incidentally, the knitting support lever 19 is formed with an inclined pin 34 for the operation described in FIG. The inclined pin 34 may combine a member different from the knitting support lever 19, and may be formed integrally.

FIG. 6 is an exploded perspective view of the main part of the knitting support cutting device 1 of FIG. For convenience of explanation, the spring is omitted and a bolt for coupling is added. Some bolts are omitted. The cutter 10 shown in FIG. 1 is formed of the movable member 10a and the fixed member 10b. The guide pin 41, which is formed standing on the middle portion of the movable member 10a of the cutter 10, is guided by engaging the cam groove 28a of the cutter drive cam member 28. The cutter link member 16 has an upper end pin coupled to the lower end of the cutter drive cam member 28 by a connecting pin member 42. The lower end of the movable member 10a of the cutter 10 is supported by the support pin member 43 so that rotation displacement is possible. When the cutter link member 16 is actuated by the drive lever 14 and the cutter drive cam member 28 is displaced up and down, the movable member 10a is rotated by the support pin member 43 as a guide by the guide pin 41 in the cam groove 28a. The displacement is performed to open and close the cutter 10 as the fixing member 10b. If a knitting yarn exists between the movable member 10a and the fixing member 10b when the cutter 10 is closed, cutting of the knitting yarn is made. In addition, the connection of the connection hole 18c of the upper end of the looper link member 18 shown in FIG. 4, and the lower end of the looper 12 is made by pin connection by the connection member 44. As shown in FIG.

7 shows a configuration for driving the cutter 10. In the reference state, the drive pin member 15 is located at the lower end of the long hole 16a of the link member 16 for the cutter. The drive pin member 15 is also located at the lower end of the arcuate grooves 17a and 18a of the looper link members 17 and 18. The height h1 of the arc-shaped grooves 17a and 18a is larger than the length h2 of the long hole 16a so that the cursor h1> h2. When the drive pin member 15 pivots about the output shaft 13 and moves upward, the drive pin member 15 does not drive the cutter link member 16 until the upper end of the long hole 16a is reached. Therefore, when h1≤h2, the drive for opening and closing the cutter 10 is not performed. The period during which the drive pin member 15 moves the length h2 of the long hole 16a is delayed from the up / down operation of the loopers 11 and 12 without opening / closing operation of the cutter 10. By adjusting h2 with respect to hl, the timing of the operation of the cutter 10 with respect to the operation of the loopers 11 and 12 can be adjusted. If the capturing and releasing operations of the knitting yarns 6 and 7 by the loopers 11 and 12 are completed until the cutter 10 is operated, the output shaft 13a is rotated and inverted from the reference position to the middle, so that the knitting yarns 6 and 7 are caught and supported. Can be released without the cutting by the cutter 10.

Fig. 8 shows the structure of the looper 11 in the reference state shown in Fig. 7 in (a) and the configuration of the cutter 10 in (b). 12, the structure regarding the looper 11 and the cutter 10 is shown separately, similarly.

As shown in Fig. 8A, the drive pin member 15 is located in the circular portions 17e and 18e at the ends of the arcuate grooves 17a and 18a of the looper link members 17 and 18, respectively. The looper link members 17 and 18 are pushed up and down by the looper springs 25 and 26, but are lowered by the drive pin member 15 at the lower end. As shown in (b), the cutter drive cam member 28 is also positioned downward through the link member 16 for the cutter, and the movable member 10a of the cutter 10 is connected to the fixing member 10b by the guide pin 41 guided by the cam groove 28a. Is closing.

Fig. 9 shows a state in which the drive lever 14 is angularly displaced about 90 degrees clockwise from the reference state of Fig. 8. As shown in (a), in the looper link member 17 where the lower end of the looper 11 and the upper end thereof are connected, the circular section 17e at the lower end of the arc-shaped groove 17a is interlocked with the driving pin member 15 to make the output shaft 13a a point. A link is formed to drive the lower end of the looper 11 in the upward direction. In the arc-shaped groove 18a of the linker 18 for the looper, the cutting portion 15a of the drive pin member 15 faces the inner circumferential side, and the drive pin member 15 can pass therethrough. In the looper link member 17, the projection 17b does not come into contact with the contact pin 37. In the looper link member 18, the projection 18b continues in contact with the contact pin 38. Therefore, since the drive pin member 15 only passes through the arc-shaped groove 18a of the looper link member 18, the drive to the looper 12 connected to the upper end of the looper link member 18 is not made. As shown in (b), the drive pin member 15 is located in the middle of the long hole 16a of the link member 16 for cutter. Since the upper end of the cutter link member 16 and the lower end of the cutter drive cam member 28 are only pinned by the connecting pin member 42, the cutter link member 16 only has a rotational displacement with the connecting pin member 42 as a point. Therefore, the cutter drive cam member 28 does not rise.

FIG. 10 shows a state in which the drive lever 14 is angularly displaced about 135 degrees clockwise from the reference state of FIG. 9 (a), the linker 17 for the looper pushes up the lower end of the looper 11 through the connecting member 40 at the upper end, and the hook portion 11a at the upper end of the looper 11 supports the knitting as shown in FIG. Passes between the lever 19 and protrudes upward than the needle bed 3. As shown in Fig. 3, when the knitting yarn 6 is supported between the hook portion 11a and the knitting support lever 19, the knitting yarn 6 is released. As shown in (b), in the long hole 16a of the link member 16 for a cutter, the drive pin member 15 reaches the upper end.

FIG. 11 shows a state in which the drive lever 14 is angularly displaced by about 170 degrees clockwise from the reference state of FIG. 10A, the hook portion 11a of the looper 11 projects upward of the needle bed 3 and rises to a height at which the knitting yarn can be picked up. As shown in (b), after the position of the drive pin member 15 reaches the upper end of the long hole 16a in Fig. 10 (b), the cutter drive cam member 28 ascends with the turning of the drive lever 14 clockwise to the cam groove. The movable member 10a of the cutter 10 is driven to open with respect to the fixing member 10b by the guide of the guide pin 41 by 28a.

FIG. 12 shows a state in which the drive lever 14 is rotated counterclockwise from the state of FIG. 11, and is angularly displaced about 55 degrees clockwise from the reference state of FIG. As shown in (a), the looper 11 is lowered so that the hook portion 11a at the upper end is lower than the needle bed 3, and the hook 11a and the knitting support lever 19 shown in Fig. 2 are closed. If the knitting yarn is caught in the hook portion 11a in Fig. 11 (a), the picked knitting yarn can be lowered and supported between the knitting support lever 19 as shown in Fig. 3. As shown in (b), the knitting yarn 6 lowered by the looper 11 can be cut by the cutter 10. As shown in Fig. 1, the knitting yarn 7 lowered by the looper 12 is also cut by the cutter 10 similarly to the knitting yarn 6.

At each angular displacement of the drive lever 14 from Fig. 11 (b) to Fig. 12 (b), the drive pin member 15 merely moves the inside of the long hole 16a of the link member 16 for cutter relatively from the top to the bottom. In the meantime, the cutter drive cam member 28 is supported by the sliding resistance generated by the clamping of the cutter block 31 by the cam plate presser 29. When the drive lever 14 is further displaced in the counterclockwise direction, the cutter link member 16 is lowered, and the cutter drive cam member 28 is lowered through the connecting pin member 42, and the cutter pin 10 is guided by the guide pin 41 by the cam groove 28a. The movable member 10a is closed with respect to the fixed member 10b. When the gap between the movable member 10a of the cutter 10 and the fixing member 10b is closed, the knitting yarn 6 captured by the looper 11 can be cut.

As shown in Figs. 9 to 12 (a), the cutting pin 15a is formed on the driving pin member 15. However, in the cross-sectional shape of the driving pin member 15, both ends of the circular diameter of the circular section where the cutting 15a does not exist are looper link members. The inner circumference of the circular portion 17e at the end of the circular arc-shaped groove 17a of 17 is in contact. Accordingly, the drive pin member 15 is locked out of the circular portion 17e of the arc-shaped groove 17a and is not inserted into the arc-shaped portion, so that the drive pin member 15 can be stably interlocked with the swing of the drive lever 14. From the reference state of FIG. 8, when the driving lever 14 is rotated in the counterclockwise angular displacement range, similarly to the looper link member 16 described above, only the looper link member 17 for driving the looper 12 can be selectively displaced. .

Also, the looper 11 and 12 and the knitting yarn which are operated when the output shaft 13a is angularly displaced from the predetermined reference state and selectively operate the looper 11 on one side or the looper 12 on the other side and increase the angle difference from the reference state. As a selective drive mechanism which opens the support mechanism comprised between the support levers 19 and 20, and raises the looper 11 and 12, and lowers the looper 11 and 12 when the angle difference decreases, for example, an arc-shaped cam It can also be implemented by combining with a spiral cam. The cam may be formed as a groove on the plate surface even if it is the outer periphery of the cam plate. The combined cam may be in an inoperative state while the other support mechanism engages with the arc-shaped cam while the one support mechanism is engaged with the spiral cam.

In addition, if two loopers 11 and 12 are selectively operated using a single motor 13 as a driving source, the cutter 10 can make a knitting support cutting device simpler than a configuration in which a driving source is installed for each looper 11 or 12 even when driven by an independent driving source. Can be. The drive of the cutter 10 can be performed via the same link mechanism as the knitting support cutting device 1 using a motor independent of the motor 13, or an actuator such as a solenoid can be directly acted on the movable member 10a of the cutter 10. Interlocking of the loopers 11, 12 and the cutter 10 when the drive source is different can be electrically performed by program control or the like.

Since the at least two loopers 11 and 12 can be selectively operated by a single drive source, the knitting support cutting device is simplified, and it is also easy to move by simply fixing and installing the end of the needle bed.

According to the present invention, the support mechanism on one side or the support mechanism on the other side is selectively operated by the selection support mechanism along the direction in which the output shaft of the drive source that can change the rotation direction is angularly displaced from a predetermined reference state. When the angle difference with the reference state increases, the support mechanism to be operated is opened and raised, and when the angle difference decreases, the support mechanism is lowered and closed, so that two support mechanisms are selectively operated by one drive source, It is possible to open and close and elevate the knitting yarns spread over the yarn feeder located separately to catch, support and release them individually. Since the cutting drive mechanism is driven to operate the cutting tool when the selection driving mechanism increases and decreases the angle difference from the reference state, the cutting tool can be shared by the two support mechanisms. Two support mechanisms can independently support and release the end of the knitting yarn, and even though the end of the yarn can be cut by the cutter tool, the two support mechanisms are driven by a single drive source, so the installation space can be reduced. A simple knitting support cutting device can be obtained.

According to the present invention, the driving pin that rotates in accordance with the angular displacement of the output shaft of the drive source is common to one end of the arc-shaped groove of one link member and the other end of the arc-shaped groove of the other link member in a reference state. It is inserted into, can drive by interlocking the tip of the other arc-shaped groove while the driving pin passes through the one arc-shaped groove.

Moreover, according to this invention, the drive pin is provided with the cross-sectional shape by which the part inserted in the circular groove of the link member cut | disconnected a part of circular shape. The arc-shaped groove of the link member has a shape in which an end portion of the driving pin has a circular shape at an end at which the driving pin is commonly inserted in the reference state, and a cut-out cross section is allowed to pass through at the portions except the end. Because of the width, the conversion of the drive along the direction of angular displacement from the reference state can be assured.

In addition, according to the present invention, since the cutting drive mechanism includes a link member that stops the operation of the cutting tool while the driving pin passes through the above-mentioned long hole, the supporting mechanism slows down the operation so that the support mechanism catches and lowers the knitting yarn. Can be. In addition, since the drive pin rotates in accordance with the angular displacement of the output shaft of the single drive source for driving the support mechanism, the cutting tool can also be driven by the single drive source. Since the two support mechanisms and the cutter mechanism are driven by a single drive source, the knitting support cutting device can be made simpler.

Moreover, according to this invention, the support mechanism of the side close to a cutting device among the two support mechanisms shifts the position of the part which hangs over the yarn feed port located in the knitting end outer side of the knitting end which supports the end of a thread, and supports another It can be prevented from being caught when the mechanism is raised.

In addition, according to the present invention, since the end of the knitting yarn can be independently supported and released by two supporting mechanisms in the flat knitting machine, and the knitting yarn can be cut by the cutting tool, and a simple knitting support cutting device is provided. Various processing can be performed along the cutting and support of knitting yarns during fabric knitting. Since the knitting support cutting device can be easily configured, the number of knitting yarns that can be processed can be increased by increasing the number to be used.

Claims (6)

A yarn feeder located outside of the range of knitting needles used for knitting knitted fabric with a flat knitting machine and located outside of the range from the knitting fabric. Two support mechanisms that can be opened and closed and lifted so as to individually capture, support, and release the knitting yarns spanned by In the knitting support cutting device provided with the cutting tool tool which cut | disconnects knitting yarn on the knitting fabric side, A drive source capable of changing the rotational direction of the output shaft, When the output shaft selectively operates one support mechanism or the other support mechanism along the direction in which the output shaft is angularly displaced from the predetermined reference state, the angle difference with the reference state increases. A selective driving mechanism which opens and raises the supporting mechanism to be operated, and lowers and closes the supporting mechanism when the angle difference decreases; In the selective drive mechanism, when the angle difference with the reference state increases and decreases, Knitting support cutting device comprising a. The method of claim 1, The selection drive mechanism, A drive pin parallel to the output shaft of the drive source and pivotally displaced in accordance with the angular displacement of the output shaft, Two link members having arcuate grooves into which drive pins are inserted. Including, In the reference state, a driving pin is commonly inserted into one end of the arc-shaped groove of one link member and the other end of the arc-shaped groove of the other link member, and the output shaft is converted along the direction of angular displacement from the reference state. The knitting support cutting characterized in that the drive pin passes through the circular groove of the one link member to be driven, while the other link member is driven in conjunction with the driving pin is inserted into the end of the circular groove. Device. The method of claim 2, The driving pin has a cross-sectional shape in which a portion of a circular portion is inserted into the arc-shaped groove. The arc-shaped groove of the link member has a shape in which a portion having a round cross section is inserted in the driving pin at an end portion at which the driving pin is commonly inserted in the reference state. The portion other than the end portion is a knitting support cutting device characterized in that it has a width that can pass through the cut cross-sectional shape does not pass the rounded portion. The method according to claim 2 or 3, The cutting drive mechanism has a long hole through which the drive pin is inserted, and a link member for stopping the operation of the cutting tool while the driving pin passes through the long hole. Knitting support cutting device. The method according to any one of claims 1 to 4, The support mechanism on the side closer to the cutting device among the two support mechanisms is a knitting yarn so that the knitting yarn of the portion that extends from the support mechanism to the yarn feeding port located outside the range of the knitting needle is not caught when the other supporting mechanism is raised. The knitting support cutting device, characterized in that provided with a projection for deviating the position of the portion that spans the yarn feed port. A knitting machine comprising the knitting support cutting device according to any one of claims 1 to 5.

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