CN101641468B

CN101641468B - Knitting yarn switching method and knitting yarn switching device

Info

Publication number: CN101641468B
Application number: CN200880009355.XA
Authority: CN
Inventors: 有北礼治
Original assignee: Shima Seiki Mfg Ltd
Current assignee: Shima Seiki Mfg Ltd
Priority date: 2007-03-22
Filing date: 2008-03-21
Publication date: 2011-06-29
Anticipated expiration: 2028-03-21
Also published as: EP2141270A1; EP2141270B1; JP5161204B2; CN101641468A; WO2008114872A1; EP2141270A4; JPWO2008114872A1

Abstract

The invention relates to a knitting yarn switching method and a knitting yarn switching device. When knitting yarns from yarn cones (12b, 12a) are fed to yarn feeders (13b, 14a), end portions of the knitting yarn fed to the yarn feeders (14b, 13a) are held, and when knitting yarns from the yarn cones (12b, 12a) are fed to the yarn feeders (14b, 13a), end portions of the knitting yarns fed to the yarn feeders (13b, 14a) are held. The knitting yarns to be connected thus held and the yarn cones (12b, 12a) are pieced into each other, and thereafter, holding of the end portions of the knitting yarns to be connected is released, and the knitting yarns fed from the yarn cones (12b, 12a) are cut between the pieced portions of the knitting yarns to be connected and portions reaching the yarn feeders, and the end portions of the knitting yarns cut off from the yarn cones (12b, 12a) are held.

Description

Knitting yarn switching method and knitting yarn switching device

Technical field

The present invention relates to knitting yarn switching method and knitting yarn switching device.

Background technology

Figure 14 schematically is illustrated in the figure that supplies with the form of stocking yarn in the straight-bar machines 1.For example scarf etc. is when the scope change dyed yarn of regulation weaves to use 1 pair of straight-bar machines, and a plurality of knitted

fabrics

3,4 separate predetermined distance and weave on a needle-bar 2.Wove a plurality of knitted fabrics like this at 3,4 o'clock, be provided with the braiding of supplying with knitted fabric 3 respectively that need and yarn feeding device 5a, the 5b mutually different stocking yarn A of color, B and supply with yarn feeding device 6a, the 6b of stocking yarn A, B that the braiding of knitted fabric 4 needs respectively, supply with stocking yarn to the knitting needle of needle-bar 2.Supply with separately respectively from as the taper yarn tube 7a of stocking yarn supply source, the stocking yarn A of 8a to yarn feeding device 5a, 6a, supply with respectively stocking yarn B separately from

taper yarn tube

7b, 8b to yarn feeding device 5b, 6b.

In the prior art, in order to weave a plurality of knitted

fabrics

3,4, will prepare a taper yarn tube by a corresponding yarn feeding device, wove a plurality of knitted fabrics at 3,4 o'clock at the stocking yarn that switches polychrome, because the quantity of the quantity taper yarn tube of stocking yarn as required is more, need guarantee the very big space that is provided with so exist for this taper yarn tube is set, and in the management of stocking yarn, produce the problem of inconvenience.

Summary of the invention

The object of the present invention is to provide quantity that can reduce the stocking yarn supply sources such as taper yarn tube that need in the braiding and the knitting yarn switching method and the knitting yarn switching device that can easily manage to stocking yarn.

The invention provides a kind of knitting yarn switching method, use can keep the stocking yarn end holding device, can cut off stocking yarn shearing device, can be with the piecing devices of stocking yarn joint, switch stocking yarn from the supply target of stocking yarn supply source, it is characterized in that to a plurality of yarn feeding devices

When any yarn feeding device in a plurality of yarn feeding devices is supplied with from the stocking yarn of stocking yarn supply source, keep to the end of the independent stocking yarn of supplying with of all the other yarn feeding devices with described holding device,

By described piecing devices the end is held in the stocking yarn that will connect of described holding device and carries out joint from the stocking yarn of described stocking yarn supply source,

Behind the joint, remove of the maintenance of described holding device to its end for the described stocking yarn of joint of wanting,

Will be from the stocking yarn of described stocking yarn supply source supply, with described shearing device at the described stocking yarn that will connect by the part of described piecing devices joint with arrive between the part of device and cut off, and keep cutting off the cut-out end of the stocking yarn of separation with described holding device from described stocking yarn supply source.

In addition, the invention provides a kind of knitting yarn switching device, it is characterized in that, comprising:

Selection portion, it is formed with for stocking yarn two reach through holes of independent break-through respectively, by described reach through hole being moved and the either party in each stocking yarn is disposed at chosen position, and the opposing party is disposed at retreating position;

Cut off maintaining part, it can keep the end of break-through in the stocking yarn of described reach through hole, and can cut off the stocking yarn that is disposed at chosen position by described selection portion;

Connector portions, it is formed with the receiving space that stocking yarn inserts, by spraying compressed fluids to a plurality of stocking yarns that insert described receiving space with a plurality of stocking yarn joints;

Guide part, it is held in described cut-out maintaining part with the end and is engaged by the stocking yarn that described selection portion is disposed at chosen position, and the part of the stocking yarn that engaged is inserted described receiving space; And

Control part, it controls described selection portion, cut off maintaining part, connector portions and guide part, remain in described cut-out maintaining part in the end that makes break-through in the stocking yarn of a reach through hole, and make under the state of receiving space of the described connector portions of stocking yarn break-through of another reach through hole of break-through, after utilizing described selection portion that the stocking yarn of break-through one reach through hole is disposed at chosen position, utilize described guide part to make the part of the stocking yarn that is disposed at chosen position insert the receiving space of described connector portions, after utilizing described connector portions to carry out joint, stocking yarn to break-through one reach through hole, make the open-ended that keeps by described cut-out maintaining part, after utilizing described selection portion that the stocking yarn of another reach through hole of break-through is disposed at chosen position, utilize of the stocking yarn cut-out of described cut-out maintaining part with another reach through hole of break-through, and, the end that keeps the stocking yarn of another reach through hole of break-through.

In addition, in the present invention, preferred described cut-out maintaining part comprises:

First parts, the first maintenance face that it has cutoff tool and be located at a side of cutoff tool on predetermined direction;

Second parts have the second maintenance face; And

Drive division, its make described first parts stocking yarn can be held between described first and second maintenance face the holding position and can to than described holding position a more inclined to one side side by described predetermined direction mobile and will be clamped between the release position that the stocking yarn between described first and second maintenance face opens and move.

In addition, preferred described selection portion has the plate and the common drive division that drives this plate of the described reach through hole of independent formation.

Description of drawings

Purpose of the present invention, characteristic and advantage can be clearer and more definite from following detailed description and accompanying drawing.

Fig. 1 schematically represents to use the figure of the stocking yarn supply method of one embodiment of the present invention to the form of straight-bar machines 10 supply stocking yarns.

Fig. 2 A and Fig. 2 B are the vertical view and the front views of the knitting yarn switching device 11 of one embodiment of the present invention.

Fig. 3 A and Fig. 3 B take out the main composition of knitting yarn switching device 11 and vertical view and the front view represented.

Fig. 4 A and Fig. 4 B are vertical view and the front views that an end of first parts 37 is amplified expression.

Fig. 5 is the block diagram that the electricity of expression needs for the stocking yarn switching controls of carrying out knitting yarn switching device 11 constitutes.

Fig. 6 is the flow chart of the order of expression joint action.

Fig. 7 A and Fig. 7 B are disposed at the stocking yarn A in using retreating position, the stocking yarn B in the standby are disposed at knitting yarn switching device 11 under the state of chosen position is simplified and vertical view and the front view represented being in.

Fig. 8 A and Fig. 8 B are to being in that knitting yarn switching device 11 under the state that the stocking yarn A in using and the stocking yarn B in the standby are contained in receiving space 51 is simplified and vertical view and the front view represented.

Fig. 9 A and Fig. 9 B are contained in receiving space 51 with the stocking yarn A in using and the stocking yarn B in the standby and the knitting yarn switching device 11 under the maintenance opened state of the end of stocking yarn B are simplified and vertical view and the front view represented being in.

Figure 10 A and Figure 10 B be to be in the stocking yarn A in using and the stocking yarn B in the standby be contained in receiving space 51 and with the maintenance of the end of the stocking yarn B in the standby open after, again stocking yarn A is disposed at chosen position, stocking yarn B is disposed at knitting yarn switching device 11 under the state of retreating position is simplified and vertical view and the front view represented.

Figure 11 A and Figure 11 B cut off the stocking yarn A in using and keep knitting yarn switching device 11 under the state of one end (cut-out end) to simplify and vertical view and the front view represented being in.

Figure 12 A and Figure 12 B make the maintained stocking yarn A in an end move to retreating position to being in, make stocking yarn B move to that knitting yarn switching device 11 under the state of chosen position is simplified and vertical view and the front view represented.

Figure 13 A and Figure 13 B are after making stocking yarn A move to retreating position to being in, making stocking yarn B move to chosen position, guide post 55 are disposed at knitting yarn switching device 11 under the state of position of readiness is simplified and vertical view and the front view represented.

Figure 14 schematically is illustrated in the figure that supplies with the form of stocking yarn in the straight-bar machines.

The specific embodiment

Below, with reference to the accompanying drawings suitable embodiment of the present invention is at length described.

Fig. 1 schematically represents to use the figure of the stocking yarn supply method of one embodiment of the present invention to the form of straight-bar machines 10 supply stocking yarns.In the stocking yarn supply method of present embodiment, use knitting

yarn switching device

11a, 11b, supply with stocking yarn from taper yarn tube 12a selectively to a plurality of yarn feeding device 13a, 14a, supply with stocking yarn selectively to a plurality of

yarn feeding device

13b, 14b from taper yarn tube 12b.Taper

yarn tube

12a, 12b are the stocking yarn supply source.

For example scarf etc. is when the scope change dyed yarn of regulation weaves to use 10 pairs of straight-bar machines, and a plurality of knitted

fabrics

16,17 separate predetermined distance and weave on a needle-bar 15.Wove a plurality of knitted fabrics like this at 16,17 o'clock, be provided with to the braiding of a knitted fabric 16 and supply with yarn feeding device 13a, the 13b of the stocking yarn A, the B that need respectively and supply with yarn feeding device 14a, the 14b of the stocking yarn A, the B that need respectively, supply with stocking yarn to the knitting needle of needle-bar 15 to the braiding of knitted fabric 17.Supply with stocking yarn A via knitting yarn switching device 11a selectively to yarn feeding device 13a, 14a, supply with stocking yarn B selectively to yarn

feeding device

13b, 14b from taper yarn tube 12b via knitting yarn switching device 11b from taper yarn tube 12a.

In

yarn feeding device

13a, 13b, 14a, 14b, knitting

yarn switching device

11a, 11b do not keep supplying to the upstream-side-end of the direction of the supply of directly supplying with stocking yarn A, the B of the yarn feeding device the use of stocking yarn A, B from

taper yarn tube

12a, 12b, but keep supplying to the upstream-side-end of the direction of the supply of stocking yarn A, the B of the yarn feeding device in the standby.The end of downstream side of the direction of the supply of stocking yarn A, B in that the upstream-side-end of the direction of the supply is kept by knitting

yarn switching device

11a, 11b, the standby is kept by the clip 19a, the 19b that are located near the needle-bar 15.

If by knitting yarn switching device 11a when yarn feeding device 13a supplies with stocking yarn A selectively, supply with stocking yarn B by knitting yarn switching device 11b selectively to yarn feeding device 14b, perhaps, by knitting yarn switching device 11a when yarn feeding device 14a supplies with stocking yarn A selectively, supply with stocking yarn B by knitting yarn switching device 11b selectively to yarn feeding device 13b, with straight-bar machines 10 difference making

knit fabrics

16,17, then can only use from two taper yarn tube 12a, the stocking yarn A that 12b supplies with, B is making knit fabric 16 simultaneously, 17, thus the quantity of taper yarn tube can be reduced.Thereby, can suppress to be provided with the increase in space, and be easy to manage stocking yarn.Knitting

yarn switching device

11a, 11b are same formation, later on they are referred to as knitting yarn switching device 11.

Fig. 2 A and Fig. 2 B are the vertical view and the front views of the knitting yarn switching device 11 of one embodiment of the present invention.Fig. 3 A and Fig. 3 B take out the main composition of knitting yarn switching device 11 and vertical view and the front view represented.Fig. 4 A and Fig. 4 B are vertical view and the front views that an end of first parts 37 is amplified expression.The formation of knitting yarn switching device 11 comprises: selection portion 21, the base portion 25 that cuts off maintaining part 22, connector portions 23, guide part 24 and these each ones are set.

Selection portion 21 possesses:

plate

27a, 27b, and its end at length direction is formed with stocking yarn reach through hole 26a, the 26b of independent break-through respectively separately, is formed with

otch

29a, 29b respectively in the other end; And first drive division 29 of common drive plate 27a, 27b.The length of

plate

27a, 27b length direction about equally, the overlapping setting of the part of thickness direction is formed with slotted hole 32a, the 32b of break-through guiding parts 33 separately.In the aftermentioned break-through is recited as stocking yarn A in the stocking yarn of reach through hole 26a, break-through is recited as stocking yarn B in the stocking yarn of reach through hole 26b.In addition, do not having only to be recited as stocking yarn under the specific situation of pointing out stocking yarn A and stocking yarn B.

First drive division 29 is realized by motor.Be fixed with first on the rotating shaft of first drive division 29 and link parts 30, these first binding parts 30 are provided with around the rotatable cylinder 31a of rotation L1,

31b.Cylinder

31a, 31b embed respectively among otch 29a, the 29b.When angular displacement took place a side F1, plate 27a was nearby side-prominent to the paper of Fig. 2 B with respect to plate 27b around rotating shaft L1 for the first binding parts 30, and A is disposed at retreating position with stocking yarn, and stocking yarn B is disposed at chosen position.In addition, when angular displacement took place the opposing party F2, the configuration relation of plate 27b and plate 27a was opposite around rotating shaft L1 for the first binding parts 30, and B is disposed at retreating position with stocking yarn, and stocking yarn A is disposed at chosen position.Base portion 25 comprises the first base portion 25a and the second base portion 25b, forms roughly T word shape, and described first drive division 29 is fixed in the first base portion 25a.

Cut-out maintaining part 22 constitutes and can keep the end of break-through in stocking yarn A, the B of reach through

hole

26a, 26b, and can cut off the stocking yarn that is disposed at chosen position by selection portion 21.The formation of cutting off maintaining part 22 comprises: first parts 37, and its end at length direction is formed with the teat 42 with cutoff tool 35 and first maintenance face 36, is formed with slotted hole 43 and cylinder 44 in the other end; Second parts 39, it has the second maintenance face 38; And second drive division 41.With the first maintenance face 36 in abutting connection with and be formed with cutoff tool 35 by the end of the slotted hole 43 of teat 42 partially, this end then tilts in Fig. 2 A～each figure of Fig. 4 B more to the right more towards the first maintenance face 36 and the second base portion 25a.In addition, teat 42 has inclined plane 50, and this inclined plane 50 is making first parts 37 when move the release position, to the stocking yarn of the side directed chosen position of the second base portion 25b.

Second parts 39 are fixed on the second base portion 25b via installing component 46, and extend to the second base portion 25b side from installing component 46, are formed with the second maintenance face 38 parallel with the first maintenance face 36 in the end of first parts, 37 sides.Second drive division 41 moves described first parts 37 between the release position that stocking yarn can be held on the holding position between first and

second maintenance face

36,38 and the stocking yarn that is clamped between first and

second maintenance face

36,38 can be opened.In Fig. 4 A and Fig. 4 B, represent second parts 39 with respect to the relative position of first parts 37 that are in holding position and release position with the line of double dot dash line and single-point respectively.

Second drive division 41 is realized by motor.Be fixed with second on the rotating shaft of second drive division 41 and link parts 40, these second binding parts 40 are provided with the connection shaft 45 of the described slotted hole 43 of break-through, and are formed with the gathering sill 47 of the described cylinder 44 of guiding.Gathering sill 47 forms more around rotation L2 towards a side F3 then more away from described rotation L2, thus, second link parts 40 around rotating shaft L2 when angular displacement takes place in the opposing party F4, cylinder 44 moves along gathering sill 47, connection shaft 45 moves in slotted hole 43, first parts 37 are moved to described release position, and second link parts 40 around rotating shaft L2 when angular displacement takes place in a side F3, first parts 37 are moved to described holding position.Second drive division 41 is fixedly set in the second base portion 25b.

Connector portions 23 has the direction of the supply that connects stocking yarn and is formed with the twist joint 52 of the receiving space 51 of stocking yarn insertion, by spray compressed air to a plurality of stocking yarns that insert described receiving space 51, a plurality of stocking yarns are carried out joint as compressed fluid.Be formed with access 53 in twist joint 52, this access 53 is communicated with receiving space 51 and space outerpace, enlarges more away from receiving space 51 more as shown in Figure 2, and the stocking yarn guiding that will engage with guide part 24 is to receiving space 51.Twist joint 52 is disposed at the opposition side of the first maintenance face 36 of first parts 37, and is arranged at the second base portion 25b.

Guide part 24 and an end are held in and cut off maintaining part 22 and engage by the stocking yarn that selection portion 21 is disposed at chosen position, and possess the guide post 55 and the 3rd drive division 56 of the part insertion receiving space 51 that is used for the stocking yarn that will be engaged.The 3rd drive division 56 is realized by motor.Guide post 55 possesses the 3rd attaching parts 58 on the rotating shaft that base end part is fixedly set in the 3rd drive division 56 and pin parts 57a, the 57b that is arranged at the hovering end of the 3rd attaching parts 58.

Pin parts

57a, 57b separate predetermined distance and are provided with around rotation L3.The 3rd drive division 56 is fixed in the first base portion 25a.

Pin parts

57a, 57b have cylindrical shape, and leading section is formed with

yarn slot

61a, 61b.

The 3rd drive division 56 makes guide post 55 between position of readiness and insertion position angular displacement take

place.Pin parts

57a, 57b did not contact with each stocking yarn when being arranged in guide post 55 and being in position of readiness, and its mobile route is only reported to the leadship after accomplishing a task with the stocking yarn that is disposed at chosen position.Angular displacement takes place and moves to the insertion position from position of readiness to a side F5 around rotation L3 in guide post 55, angular displacement takes place and moves to position of readiness from the insertion position to the opposing party F6.Guide post 55 from position of readiness when move the insertion position,

yarn slot

61a, 61b engage with the stocking yarn that is disposed at chosen position, in the stocking yarn that is engaged, be sticked in the part of yarn slot 61a and the part that is held between the end that cuts off maintaining part 22 is accommodated in receiving space 51.

Fig. 5 is the block diagram that the electricity of expression needs for the stocking yarn switching controls of carrying out knitting yarn switching device 11 constitutes.The formation of knitting yarn switching device 11 comprises: whether the either party of control part 71, check-out

console

27a, 27b be in the retreating position sensor 72 of retreating position, detect the bar origin sensor 73 of the position of readiness of guide post 55, select the second cam origin sensor 74 that links the holding position of parts 40.First～the

3rd drive division

29,41,56 for example uses stepping motor, with testing result based on described each sensor 72～74, control by control part 71, generation number according to driving pulse waits adjusting angle position and direction of rotation, thereby the mode of corresponding certain angular range back and forth drives its rotating shaft.

The indication of the implication of joint is carried out in control part 71 acceptance, and selection portion 21, cut-out maintaining part 22, connector portions 23 and guide part 24 are controlled.In addition, electric control is carried out in the switchings of the electromagnetic valve of air supply valve 75 realize by to(for) 23 pairs of connector portions of control part 71.Gas bomb or compressor are connected in air supply valve 75, carry out to twist joint 52 according to the switching of air supply valve 75 and supply with compressed air and stop supply.

Fig. 6 is the flow chart of the order of expression joint action.Fig. 7 A and Fig. 7 B are disposed at the stocking yarn A in using retreating position, the stocking yarn B in the standby are disposed at knitting yarn switching device 11 under the state of chosen position is simplified and vertical view and the front view represented being in.Fig. 8 A and Fig. 8 B are to being in that knitting yarn switching device 11 under the state that the stocking yarn A in using and the stocking yarn B in the standby are contained in receiving space 51 is simplified and vertical view and the front view represented.Fig. 9 A and Fig. 9 B are contained in receiving space 51 with the stocking yarn A in using and the stocking yarn B in the standby and the knitting yarn switching device 11 under the maintenance opened state of the end of stocking yarn B are simplified and vertical view and the front view represented being in.Figure 10 A and Figure 10 B be to be in the stocking yarn A in using and the stocking yarn B in the standby be contained in receiving space 51 and with the maintenance of the end of the stocking yarn B in the standby open after, again stocking yarn A is disposed at chosen position, stocking yarn B is disposed at knitting yarn switching device 11 under the state of retreating position is simplified and vertical view and the front view represented.Figure 11 A and Figure 11 B cut off the stocking yarn A in using and keep knitting yarn switching device 11 under the state of one end (cut-out end) to simplify and vertical view and the front view represented being in.Figure 12 A and Figure 12 B make the maintained stocking yarn A in an end move to retreating position to being in, make stocking yarn B move to that knitting yarn switching device 11 under the state of chosen position is simplified and vertical view and the front view represented.Figure 13 A and Figure 13 B are after making stocking yarn A move to retreating position to being in, making stocking yarn B move to chosen position, guide post 55 are disposed at knitting yarn switching device 11 under the state of position of readiness is simplified and vertical view and the front view represented.

The stocking yarn change action is carried out by the control of control part 71, and begins in the moment that stocking yarn need change.At this, for convenience of description, shown in Fig. 3 A and Fig. 3 B, under original state, set the stocking yarn A that passes reach through hole 26a and be the stocking yarn in using, the stocking yarn B that passes reach through hole 26b is the stocking yarn in the standby.In addition, first parts 37 are disposed at the holding position, and the end of the stocking yarn B in the standby keeps by cutting off maintaining part 22.In addition, stocking yarn A is disposed at chosen position, and stocking yarn B is disposed at retreating position.In addition, setting stocking yarn A is the stocking yarn of the receiving space 51 of break-through twist joint 52.In addition, guide post 55 is disposed at position of readiness, and air supply valve 75 is in by locking can not produce the compressed-air actuated mobile state that is used for joint.

In step s1, shown in Fig. 7 A and Fig. 7 B, control part 71 utilizes selection portion 21 to make stocking yarn B move to the chosen position that can engage by

yarn slot

61a, 61b, makes stocking yarn A move to the retreating position that can not engage by guide post 55.

Then, in step s2, control part 71 control second drive division 41 makes guide post 55 from position of readiness generation angular displacement, and when arriving the insertion position shown in Fig. 8 A and Fig. 8 B, the angular displacement of guide post 55 is finished.Stocking yarn A in the use more leans on paper laterally by the leading section than guide post 55 in Fig. 8, guide post 55 can only hang up the stocking yarn B that is in chosen position in

yarn slot

61a, 61b in angular displacement, can stocking yarn B be contained in the receiving space 51 of twist joint 52 by moving of guide post 55.Owing to

pin parts

57a, 57b as mentioned above devices spaced apart be provided with, when guide post 55 is disposed at the insertion position, can only make among the stocking yarn B to begin to be cut off the part that maintaining part 22 keeps from pin parts 57a and be contained in the described receiving space 51.

Then, in step s3, control part 71 control air supply valves 75 are supplied with compressed air to twist joint 52 with the stipulated time, carry out the joint of stocking yarn A, B.Be formed with compressed-air atomizer on the twist joint 52, be wrapped with again after in the air flow in receiving space 51 twisting thread of stocking yarn A, B temporarily being untied and carry out joint.

Then, in step s4, control part 71 control second drive division 41 shown in Fig. 9 A and Fig. 9 B, makes second to link parts 40 and carry out angular displacement from the holding position, and first parts 37 are moved to the release position from the holding position.Thus, the end of stocking yarn B is open by the maintenance of carrying out from cut-out maintaining part 22.

The leading section of first parts 37 is when the holding position moves to the release position, contact with the part that is erected among the stocking yarn B between reach through hole 26b and the pin parts 57b, but stocking yarn B by along above-mentioned inclined plane 50 the second base portion 25b to first parts 37 side directed, engage with teat 42 to prevent stocking yarn B.

Then, in step s5, control part 71 controls first drive division 29 shown in Figure 10 A and Figure 10 B, is disposed at chosen position with the stocking yarn A that passes reach through hole 26a.

Then, in step s6, control part 71 control second drive division 41 shown in Figure 11 A and Figure 11 B, makes second to link parts 40 and carry out angular displacement, and first parts 37 are moved to the holding position from the release position.Thus, the stocking yarn A that is disposed at chosen position engages with the teat 42 of first parts 37, and is pulled by the moving direction to first parts 37.When first parts 37, the first maintenance face 36 that moves to was faced the position of the second maintenance face 38, stocking yarn A was clamped between first and second maintenance face 36,38.In addition, stocking yarn A is also by engaging and contact cut cutter 35 with teat 42.Under the end of stocking yarn A was clamped in state between first and

second maintenance face

36,38, if first parts 37 move, then stocking yarn A was pushed and runs into cutoff tool 35 and be cut off.

Then, in step s7, control part 71 controls first drive division 29 shown in Figure 12 A and Figure 12 B, makes stocking yarn A move to retreating position, and makes stocking yarn B move to chosen position.

Then, in step s8, control part 71 control the 3rd drive division 56 shown in Figure 13 A and Figure 13 B, makes guide post 55 move to position of readiness from the insertion position.Because stocking yarn A is in retreating position, therefore, guide post 55 can not engage with stocking yarn A and move to position of readiness.

By above action, break-through is held in the end of the stocking yarn A of reach through hole 26a cuts off maintaining part 22 and become holding state, and can make break-through become user mode in the stocking yarn B of reach through hole 26b.In the above explanation, having explained will be from the stocking yarn of taper yarn tube from switching to the situation to reach through hole 26b condition of supplying to reach through hole 26a condition of supplying, but for will be from the stocking yarn of taper yarn tube from switch to situation to reach through hole 26b condition of supplying to reach through hole 26a condition of supplying, only needing reach through hole 26a, the 26b that is disposed at chosen position or retreating position respectively reversed in step s1, the s5 of above-mentioned flow process, s7 gets final product, and other actions are the same.

If use this knitting yarn switching device 11, then can supply with stocking yarn A selectively to a plurality of yarn feeding device 13a, 14a from taper yarn tube 12a, supply with stocking yarn B from taper yarn tube 12b selectively to a plurality of yarn feeding device 13b, 14b.Thereby, can reduce the quantity of taper yarn tube, suppress the increase in space is set, and be easy to carry out the management of stocking yarn.

In addition, in the knitting yarn switching device 11, second drive division 41 makes first parts 37 when the release position moves to the holding position, can draw by the stocking yarn that is disposed at chosen position and with it and be clamped between the first maintenance face 36 and the second maintenance face 38, cutoff tool 35 is cut off stocking yarn with the stocking yarn butt, can carry out the maintenance and the cut-out of an end of stocking yarn by utilizing a drive division to drive first parts 37, therefore can make equipment miniaturization.

In addition, in the knitting yarn switching device 11, not with independent drive

division drive plate

27a, 27b, but drive with a drive division, just a side stocking yarn can be disposed at chosen position, the opposing party's stocking yarn is disposed at retreating position, miniaturization that therefore can implement device.Above-mentioned cut-out maintaining part 22 is holding device and shearing device, and connector portions 23 is piecing devices.

In the above-described embodiment, by the supply target of knitting yarn switching device 11 switchings from the yarn of a taper yarn tube, but also can constitute, at the upstream side of the yarn direction of the supply of knitting yarn switching device 11 engagement device of prior art is set, utilizes engagement device to supply with stocking yarns to knitting yarn switching device 11 from any of a plurality of taper yarn tubes.

Above-mentioned knitting yarn switching device 11 also can be used as this engagement device, promptly, make stocking yarn pass reach through hole 26a and supply to yarn feeding device from the taper yarn tube in two taper yarn tubes, make stocking yarn pass reach through hole 26b from another taper yarn tube, and the one end remained in cut off maintaining part 22, switch the stocking yarn of supplying with to a yarn feeding device from two taper yarn tubes selectively.

In addition, each above-mentioned embodiment is an example of the present invention, can change its formation in scope of invention.For example, can use compressed air as compressed fluid in the above-described embodiment, and the kind of fluid is not limited to air, also can use the yarn to carrying out joint to be inert gasses, for example nitrogen comes replaces air.In addition, also can use the water of pressurization as compressed fluid.

For the present invention, do not break away from its spirit or principal character, can implement other various modes.Thereby all nothing but illustration, scope of the present invention is the represented scope of the scope of claim to above-mentioned embodiment, is not subjected to any restriction of specification this paper in all respects.And then the distortion and the change that belong to the claim scope belong in the scope of the present invention all.

According to the present invention, can be with the stocking yarn supplied with from stocking yarn supply source any yarn feeding device to a plurality of yarn feeding devices with after the stocking yarn that remaining yarn feeding device is supplied with individually carries out joint, supply to remaining yarn feeding device, promptly, can therefore, can reduce the quantity of stocking yarn supply source selectively to the stocking yarn of different yarn feeding device supplies from common stocking yarn supply source, suppress the increase in space is set, and be easy to stocking yarn is managed.

According to the present invention, the stocking yarn that will be held in the stocking yarn of state break-through one reach through hole that cuts off maintaining part and another reach through hole of break-through with the end is joint each other, the stocking yarn of another reach through hole of break-through cut off and keep its end, thus, when reach through hole is in stocking yarn direction of the supply downstream, just can selectively stocking yarn be supplied to any in two reach through holes, when reach through hole is in stocking yarn direction of the supply upstream side, just can be selectively via in two reach through holes any and supply with stocking yarn.

For example, respectively when yarn feeding device is supplied with break-through in the stocking yarn of each reach through hole separately, the stocking yarn that supplies to the stocking yarn of a yarn feeding device from the stocking yarn supply source and supply to another yarn feeding device can be carried out joint and supply with to another yarn feeding device, promptly, can therefore, can reduce the quantity of stocking yarn supply source selectively to the stocking yarn of different yarn feeding device supplies from common stocking yarn supply source, suppress the increase in space is set, and be easy to stocking yarn is managed.

According to the present invention, drive division makes first parts when the release position moves to the holding position, just can draw by the stocking yarn that is disposed at chosen position and with it to be clamped between the first maintenance face and the second maintenance face, simultaneously, can make cutoff tool and stocking yarn butt and stocking yarn is cut off.Owing to can drive maintenance and the cut-out that first parts carry out the stocking yarn end, so miniaturization that can implement device by utilizing a drive division.

According to the present invention, can utilize a drive division to drive each plate respectively, a side stocking yarn is disposed at chosen position, and the opposing party's stocking yarn is disposed at retreating position, miniaturization that therefore can implement device.

Claims

1. knitting yarn switching method, use can keep the stocking yarn end holding device, can cut off stocking yarn shearing device, can be with the piecing devices of stocking yarn joint, switch stocking yarn from the supply target of stocking yarn supply source, it is characterized in that to a plurality of yarn feeding devices

2. a knitting yarn switching device is characterized in that, comprising:

3. knitting yarn switching device as claimed in claim 2 is characterized in that, described cut-out maintaining part comprises:

Second parts, it has the second maintenance face; And

4. as claim 2 or 3 described knitting yarn switching device, it is characterized in that described selection portion has the plate and the common drive division that drives this plate of the described reach through hole of independent formation.