CN210420395U

CN210420395U - Shearing and drawing equipment of flat knitting machine

Info

Publication number: CN210420395U
Application number: CN201921148821.4U
Authority: CN
Inventors: 陈芳俊
Original assignee: Suzhou Xingke Automation Technology Co ltd
Current assignee: Suzhou Xingke Automation Technology Co ltd
Priority date: 2019-07-22
Filing date: 2019-07-22
Publication date: 2020-04-28
Anticipated expiration: 2029-07-22

Abstract

The utility model discloses a flat knitting machine cuts draw-out equipment. The yarn cutting and drawing equipment comprises a first yarn cutting device, a yarn breaking device, a yarn drawing device and a control device, wherein the first yarn cutting device, the yarn breaking device and the yarn drawing device are sequentially arranged in the left and right directions, a weaving piece walking channel is formed between the first yarn cutting device and the yarn drawing device, the yarn breaking device is positioned on the weaving piece walking channel, the first yarn cutting device comprises a first connecting wire cutter, the yarn drawing device comprises a gripping part and a second driver for driving the gripping part to move, the yarn breaking device comprises a knitting wire cutter and a fourth driver for driving the knitting wire cutter to reciprocate in the left and right directions, the control device comprises a control module, the control module controls the start and stop of the second driver and the fourth driver, the automatic separation of two adjacent weaving pieces can be realized, and the production efficiency is high, the thread end residue without connecting thread on the weaving piece has small pressure for cleaning the thread end.

Description

Shearing and drawing equipment of flat knitting machine

Technical Field

The utility model relates to a cut the equipment of taking out yarn, especially a be applied to flat knitting machine cut the equipment of taking out yarn belongs to spinning machine technical field.

Background

In the woven pieces woven by the flat knitting machine, as shown in fig. 1, two adjacent woven pieces 1 need to be sewn together by using a connecting line a, and in the flat knitting machine, at least one yarn b (generally called warp or weft) is connected between two adjacent woven pieces 1 due to continuous weaving. After the weaving pieces 1 leave the flat knitting machine, the connecting line a and the knitting line b need to be cut so that the two weaving pieces 1 are independently cut, and at present, the cutting modes of the connecting line a and the knitting line b are both manual cutting, for example, one end of the connecting line a is cut off, and the other end of the connecting line a is manually and continuously pulled until the connecting line a is pulled out of the two weaving pieces 1, so that the mode is low in production efficiency, consumes a large amount of labor cost, and is seriously unable to adapt to the current production requirements of high automation and high rhythm.

Therefore, it is an important subject of those skilled in the art to develop a shearing and drawing device for a flat knitting machine capable of automatically cutting a yarn between adjacent knitted fabrics without depending on human power.

Disclosure of Invention

An object of the utility model is to provide a flat knitting machine cuts draw-out equipment, it can not rely on the manpower at least to decide the operation by automatic yarn that carries on, solves among the prior art problem that production efficiency is low and the human cost is big.

In order to achieve the above object, an embodiment of the present invention provides a shearing and drawing device for a flat knitting machine, which comprises a first yarn cutting device, a yarn drawing device and a control device, the first yarn cutting device, the yarn breaking device and the yarn drawing device are sequentially arranged in the left-right direction, a weaving sheet walking channel is formed between the first yarn cutting device and the yarn drawing device, the yarn cutting device is positioned on the weaving sheet walking channel, the first yarn cutting device comprises a first connecting wire cutter, the yarn drawing device comprises a gripping part and a second driver for driving the gripping part to move, the yarn breaking device comprises a knitting yarn cutting knife and a fourth driver for driving the knitting yarn cutting knife to reciprocate along the left-right direction, the control device comprises a control module, and the control module controls the start and stop of the second driver and the fourth driver.

As a further improvement of the utility model, cut the drawnwork equipment and still include two horizontal poles of parallel arrangement, the horizontal pole is along controlling the direction extension, the drawnwork device with first at least one of them of cutting out the yarn device is connected in two along controlling the direction with sliding on the horizontal pole, so that the drawnwork device with first yarn device of cutting out is kept away from relatively or is close to relatively along controlling the direction.

As a further improvement of an embodiment of the present invention, the yarn drawing device further includes a second transmission mechanism connected to the second driver, the gripper is disposed on the second transmission mechanism, and the second driver drives the second transmission mechanism to drive the gripper to rotate around the axis.

As a further improvement of an embodiment of the present invention, the yarn drawing device further includes a housing and a first driving mechanism located on the housing and disposed around the axis;

the first drive mechanism is coupled to the grip to change the grip between a connection wire gripping state and a connection wire releasing state when the grip is rotated about the axis;

the grip is located above the axis when the grip is changed from the connection wire releasing state to the connection wire gripping state;

the grip is located below the axis when the grip changes from the connecting wire gripping state to the connecting wire releasing state.

As a further improvement of an embodiment of the present invention, the second transmission mechanism includes two rotating discs disposed side by side with the housing in a direction parallel to the axis, the housing having an inner surface disposed proximate to the rotating discs;

the gripping part comprises two clamping pieces, an elastic piece arranged between the two clamping pieces and a convex column positioned between the clamping pieces and the first driving mechanism; the two clamping pieces are assembled between the two turntables, the free ends of the two clamping pieces protrude out of the peripheral side surface of the turntable along the radial direction of the axis, and the convex column penetrates through the turntable and is assembled to the first driving mechanism;

the first drive mechanism comprises a first portion, a first transition portion, a second portion, and a second transition portion; the first portion is coplanar with the inner surface of the housing, and the second portion, the first transition portion and the second transition portion are all recessed in the inner surface of the housing;

during the process that the gripping part rotates around the axis for one circle, the first transition part, the second transition part and the first transition part are sequentially matched to the convex column;

and when the convex column moves from the second part to the first part through the second transition part, the first driving mechanism pushes the convex column to move along the direction parallel to the axis so as to enable the two clamping pieces to approach and clamp each other by overcoming the elastic force of the elastic piece.

As a further improvement of an embodiment of the present invention, the yarn drawing device further includes a driving and separating member disposed on the second transmission mechanism and a second driving mechanism disposed on the housing and disposed around the axis;

the second transmission mechanism drives the driving and separating piece to rotate around the axis, and when the driving and separating piece rotates around the axis, the second driving mechanism is matched with the driving and separating piece so that the driving and separating piece can reciprocate along the radial direction of the axis relative to the second transmission mechanism;

and, when the dislodging member is moved to a furthest stroke position from the axis, the gripping member is in the connecting wire releasing state.

As a further improvement of an embodiment of the present invention, the second transmission mechanism and the housing are arranged side by side in a direction parallel to the axis, and the housing has an inner surface arranged close to the second transmission mechanism;

the second driving mechanism is an eccentric guide groove formed on the inner surface of the housing;

the driving part comprises an inner end part matched and connected with the second transmission mechanism, an outer end part connected with the inner end part and exposed out of the peripheral side surface of the second transmission mechanism, and a guided part inserted into the eccentric guide groove;

when the second transmission mechanism drives the driving part to rotate around the axis, the guided part slides along the eccentric guide groove and generates radial displacement relative to the axis under the pushing of the groove wall of the eccentric guide groove.

As a further improvement of an embodiment of the present invention, the cut-off device further includes a protection device, the protection device set up in being close to the yarn drawing device one side of the first yarn cutting device, the protection device includes:

the weaving piece limiting part comprises a connecting line channel which penetrates through the weaving piece limiting part in the left-right direction and a micro-motion part arranged on one side of the connecting line channel, and the micro-motion part can be away from the first yarn cutting device in the left-right direction under the action of external force to generate position difference;

the microswitch is arranged on a movement path of the position abnormal movement of the micro-movement part, is connected with the start-stop terminal of the second driver, and has a conducting state for connecting the start-stop terminal and a separating state for disconnecting the start-stop terminal; when the micro-motion part generates position variation, the micro-motion part can trigger or disconnect the micro-motion switch so as to enable the micro-motion switch to be switched between the conducting state and the separating state.

As a further improvement of an embodiment of the present invention, the yarn cutting and drawing device further includes a second yarn cutting device, the second yarn cutting device is disposed on a side of the yarn drawing device away from the first yarn cutting device, and the second yarn cutting device includes a second connecting wire cutter and a third driver for driving the second connecting wire cutter;

the control device comprises a fourth sensor, and the fourth sensor corresponds to the position of the knife edge of the second connecting wire cutter and is positioned between the second connecting wire cutter and the gripping part;

the control module is connected with the fourth sensor through a signal receiving terminal to receive a fourth connecting line position signal from the fourth sensor, and controls the start and stop of the third driver according to the fourth connecting line position signal.

As a further improvement of an embodiment of the present invention, the braided wire cutting knife is located below the first cutting knife for connecting wires and the gripping member;

the yarn breaking device comprises a weaving piece guide surface at the upper part, and the weaving piece guide surface extends from the upper end to the lower end obliquely and downwards;

the control device comprises a weaving position sensor arranged on the yarn cutting device;

the control module is connected with the weaving position sensor to receive weaving position signals from the weaving position sensor and control the fourth driver to start and stop according to the weaving position signals.

Compared with the prior art, the beneficial effects of the utility model reside in that: the first yarn cutting device can cut one end of the connecting line between every two adjacent weaving pieces, the yarn drawing device can draw the other end of the connecting line to draw the connecting line away from the two weaving pieces, and the yarn cutting device can cut the knitting line between every two adjacent weaving pieces, so that the two adjacent weaving pieces are separated, manual operation is not needed in the whole process, the automation degree is high, the production efficiency is greatly improved, and the labor cost is reduced; and the connecting line between two adjacent knitted sheets is pulled away, so that the thread end of the connecting line cannot be remained on the knitted sheets, the quality of the knitted sheets is improved, the burden of a subsequent thread end cleaning link is reduced, and the thread end cleaning link can even be cancelled.

Drawings

FIG. 1 is a schematic view of two adjacent panels knitted by a flat knitting machine;

fig. 2a is a schematic perspective view of a yarn cutting and drawing device according to an embodiment of the present invention;

fig. 2b is a perspective view of the yarn cutting and drawing device according to an embodiment of the present invention from another view angle;

fig. 3 is a schematic structural view of a first yarn cutting device according to an embodiment of the present invention;

FIG. 4 is a schematic view of a part of the first yarn cutting device according to an embodiment of the present invention;

FIG. 5a is a schematic structural view of a drawnwork device and a protection device according to an embodiment of the present invention;

FIG. 5b is a schematic structural view of another perspective of the drawnwork device and the protection device in accordance with an embodiment of the present invention;

FIG. 6a is an exploded view of a portion of a drawdown apparatus according to an embodiment of the present invention;

FIG. 6b is an exploded view from another perspective of the partial construction of a drawdown apparatus according to an embodiment of the present invention;

FIG. 7 is a front view of a first housing of a drawnwork device in accordance with an embodiment of the present invention;

FIG. 8 is a front view of a second housing of a drawnwork device in accordance with an embodiment of the present invention;

FIG. 9 is a schematic view of the inner side of the rotating disc of the drawnwork device according to an embodiment of the present invention;

FIG. 10 is a schematic view of the structure of the rotary table of the drawnwork device according to an embodiment of the present invention;

FIG. 11 is a schematic structural view of a driving and separating member of the drawing device according to an embodiment of the present invention;

FIG. 12 is a partial schematic view of a gripper of a drawnwork apparatus according to an embodiment of the invention;

FIG. 13 is a schematic view of a partial structure of a drawing-off device according to an embodiment of the present invention;

fig. 14 is a schematic structural view of a second yarn cutting device and a fourth sensor according to an embodiment of the present invention;

fig. 15 is a schematic view of a partial structure of a yarn cutting device according to an embodiment of the present invention;

fig. 16 is a top-down orthographic view of a yarn cutting device according to an embodiment of the present invention.

Detailed Description

The present invention will be described in detail with reference to the embodiments shown in fig. 2a to 16. The apparatus 100 is shown in a preferred embodiment and can be used in a flat knitting machine, and in particular, can be used to separate two adjacent panels 1 of fig. 1 woven by the flat knitting machine, and the apparatus 100 will be described with reference to fig. 1.

Referring to fig. 2a and 2b, the cut-and-draw apparatus 100 includes a support, a first yarn cutting device 20, a second yarn cutting device 30, a draw-off device 40, a yarn cutting device 50, a guard 60, and a control device.

The support is used for supporting other components of the yarn shearing and drawing device 100 and integrally mounting the yarn shearing and drawing device 100 on the flat knitting machine, so that a fabric piece 1 knitted by the flat knitting machine can longitudinally pass through the yarn shearing and drawing device 100. The first yarn cutting device 20, the yarn cutting device 50, the protecting device 60, the yarn drawing device 40 and the second yarn cutting device 30 are sequentially arranged along a first direction (shown by an arrow x in the figure) in a transverse direction perpendicular to the longitudinal direction. A weaving piece walking channel is formed between the first yarn cutting device 20 and the yarn drawing device 40, and the yarn cutting device 50 is positioned on the weaving piece walking channel, namely, the weaving piece 1 passes through the yarn cutting device 100 from the first yarn cutting device 20 and the yarn drawing device 40, and the weaving piece 1 can pass through the yarn cutting device 50.

To clearly express the positions and directions described in the present application, the first direction (indicated by arrow x in the figure) is defined as "left", and the opposite direction to the first direction is defined as "right"; defining the running direction of the fabric (shown by arrow z in the figure) as "lower", and defining the opposite direction of the running direction of the fabric as "upper"; a direction perpendicular to both the left-right direction and the up-down direction is defined as a front-back direction, wherein an arrow y in the drawing is defined as "back" and its reverse is defined as "front".

In general, the first yarn cutting device 20 includes a connecting line first cutter 24 (reference numeral refer to fig. 3) for cutting the connecting line a on the right side of the fabric piece 1 from the flat knitting machine so that the connecting line a remaining on the fabric piece 1 has a free right end (i.e., right thread end); the drawing device 40 comprises a gripping element 43 (reference numeral refers to fig. 5a) which can be used to draw the connecting line a on the left side of the knitted piece 1 to the left, and then gradually draw the connecting line a away from two adjacent knitted pieces 1 from the left side of the knitted piece 1, thus avoiding the connecting line a from being taken down manually, and avoiding the line end of the connecting line a from remaining on the knitted piece 1.

The support comprises two cross bars 11 and a plurality of supporting pieces 12 which are parallel to each other. The drawnwork device 40 and the first yarn cutting device 20 are respectively connected to the cross bar 11 in a left-right sliding manner through the supporting piece 12, so that the distance between the two in the left-right direction can be adjusted, namely, the two can be relatively far away or relatively close to each other, and the adaptability adjustment can be further carried out according to the size of the weaving piece 1 in the left-right direction, and the universality of the yarn shearing and drawing device 100 on different weaving pieces 1 is improved. In an alternative embodiment, only one of the drawing-off device 40 and the first yarn cutting device 20 can be connected to the crossbar 11 by the support member 12 in a sliding manner in the left-right direction, again with the effect of adjusting the distance between the two.

The yarn cutting device 50 includes a knitting yarn cutter 55 (reference numeral refer to fig. 15), and the knitting yarn cutter 55 is located below the connecting yarn first cutter 24 and the gripper 43, for cutting the knitting yarn b of the adjacent two knitted sheets 1 after the connecting yarn a is drawn out, so that the adjacent two knitted sheets 1 are separated in a non-manual manner.

The second yarn cutting device 30 includes a second connecting thread cutting blade 34 (see fig. 14) for cutting the connecting thread a located on the left side of the yarn drawing device 40 from the flat knitting machine so that the connecting thread a drawn by the yarn drawing device 40 has a free left end (i.e., left thread end).

The protection device 60 is used for limiting the weaving piece 1, and avoids the weaving piece 1 from being greatly deviated and damaged leftwards or the yarn drawing device 40 from being blocked due to the drawing of the yarn drawing device 40 on the connecting line a.

The control device comprises a control module and a sensing module connected with the control module, wherein the control module is connected with at least part of the rest electrical components in the yarn shearing and drawing device 100 so as to control the overall operation of the yarn shearing and drawing device 100.

The respective devices of the cut-and-draw apparatus 100 are described in general above, and the detailed structures of these devices will be described later.

Referring first to fig. 3 and 4, the specific structure of the first yarn cutting device 20 of the present embodiment will be described. The first yarn cutting device 20 specifically comprises a first box 21, a first driver 22, a first guide 23, a first thread connecting cutter 24, a first transmission mechanism and a stabilizing member 26.

The first box body 21 is used for assembling and supporting other components of the first yarn cutting device 20 and is fixedly connected with the supporting piece 12; the first cutting knife 24 is configured as a cross-shaped scissors having a scissor blade 241 and a scissor blade 242, the scissor blade 241 and the scissor blade 242 are pivotally connected in the middle and are assembled on the first box 21 in a manner of rotating around a transverse pivot axis; the upper ends of the scissors blade 241 and the scissors blade 242 protrude out of the first box body 21 and form an upward opening knife edge, and the lower ends of the scissors blade 241 and the scissors blade 242 respectively extend into the first box body 21 and are movably connected with the first transmission mechanism; the first transmission mechanism specifically comprises a transmission wheel 251 coupled with the scissor piece 242 and a transmission wheel 252 coupled with the scissor piece 241, and the transmission wheel 251 and the transmission wheel 252 are connected in a meshing manner through teeth 250.

The first driver 22 is fixed to the outer right side of the first case 21, and drives the opening angles of the

scissor elements

241 and 242 to increase or decrease through the first transmission mechanism.

In particular, the first driver 22 is connected to the transmission wheel 251 by a profiled pin 220 with a non-circular cross-section. Wherein, when the first driver 22 is in the stop standby state, the scissor blade 241 and the scissor blade 242 are opened to an initial angle. When the first driver 22 is in the operating state, the first driver 22 has a forward driving phase and a reverse reset phase that are sequentially performed: firstly, in the forward driving phase, the first driver 22 drives the driving wheel 251 to rotate (clockwise in the view of fig. 4) through the shaped pin 220, the driving wheel 251 drives the driving wheel 252 to rotate (counterclockwise in the view of fig. 4) through the teeth 250, and further, under the driving of the driving wheel 251 and the driving wheel 252, the opening angles of the scissor blades 241 and 242 are gradually reduced even until the scissor blades are closed, that is, the connecting line a located in the knife opening between the scissor blades 241 and 242 can be cut; then, in the reverse reset phase, the first driver 22 drives the transmission wheel 251 to rotate (counterclockwise in the view of fig. 4) through the shaped pin 220, the transmission wheel 251 drives the transmission wheel 252 to rotate (clockwise in the view of fig. 4) through the teeth 250, and further, under the drive of the transmission wheel 251 and the transmission wheel 252, the opening angles of the scissor blades 241 and 242 gradually increase until the initial angle is restored, and then the first driver 22 restores the stop standby state to wait for the next cutting operation to be performed.

The first driver 22 is preferably a stepping motor, which can realize the positioning of the rotation starting point (corresponding to the stop-standby state) and the rotation maximum angle (corresponding to the termination of the forward driving phase) of the first transmission mechanism under the cooperation of the positioning sensor 27, and the adapting structure and function of the positioning sensor 27 and the stepping motor can refer to the conventional stepping motor, and are not described again.

The scissor blade 241 and the scissor blade 242 are arranged side by side and the pivot axes in the middle of the two extend in the left-right direction. Firm piece 26 establishes to establish the cover and establishes the epaxial pressure spring of pivot, and the right-hand member of this pressure spring supports and holds first box body 21 and its left end and supports and hold scissors piece 241 to be used for driving scissors piece 241 and scissors piece 242 and tightly paste, guarantee scissors piece 241 and scissors piece 242 and to the effect of deciding of connecting wire a, avoid the two to stagger the gap and cause the unable condition of deciding connecting wire a to take place.

The first guide 23 is disposed on the left side of the first box 21 and is disposed side by side with the first cutter 24 for the connecting wire, and is used to guide the connecting wire a to smoothly fall into the notch of the first cutter 24.

The first guide 23 is preferably provided as a flat plate perpendicular to the left-right direction, and has a first guide groove 230 corresponding to a position of connecting the edge of the first cutter 24 and a first opening above the first guide groove 230. The first guide groove 230 extends in the longitudinal direction. The first opening is gradually enlarged from bottom to top, and includes a first guide surface 231 and a first guide surface 232, the first guide surface 231 extends from the upper end of the front wall surface of the first guide groove 230 obliquely to the front and upward direction, the second guide surface 232 extends from the upper end of the rear wall surface of the first guide groove 230 obliquely to the rear and upward direction, and the distance between the first guide surface 231 and the first guide surface 232 in the front and rear direction is gradually enlarged from bottom to top, so that the connection line a can be guided into the first guide groove 230, and the corresponding connection line a can be smoothly guided into the edge of the connection line first cutter 24.

Referring to fig. 2a to 4, the sensing module includes a first sensor 71, and the first sensor 71 is disposed at the first yarn cutting device 20 and is used for sensing a connecting line a on the right side of the fabric sheet 1. Specifically, the first sensor 71 includes a first sensing part 711 and a second sensing part 712 that signal-interacts with the first sensing part 711. The second sensing part 712 and the first sensing part 711 are arranged in a front-back opposite and spaced manner, the gap between the two parts corresponds to the positions of the first guide groove 230 and the knife edge of the first connecting line cutter 24, and when the connecting line a falls into the gap between the first sensing part 711 and the second sensing part 712, the connecting line a also falls into the first guide groove 230 and the knife edge of the first connecting line cutter 24.

The first sensor 71 is configured to: when sensing the connection line a falling in the gap between the first and

second sensing parts

711 and 712, the first sensor 71 generates a first connection line position signal. The first sensor 71 may preferably be provided as a photoelectric sensor or the like.

The control module is configured to: connecting the first sensor 71 and receiving the first connection wire position signal from the first sensor 71; and connecting the first driver 22, and controlling the first driver 22 to change from the shutdown standby state to the running state when receiving the first connection wire position signal. In this way, when the first sensor 71 detects that the connection line a enters the gap between the first sensing part 711 and the second sensing part 712, the corresponding connection line a also falls into the knife edge of the first connection line cutter 24, and at this time, the control module controls the first driver 22 to start, so that the first connection line cutter 24 cuts off the connection line a.

Next, a specific structure of the drawing device 40 of the present embodiment will be described with reference to fig. 5a to 13.

The thread drawing device 30 comprises in particular a housing 42, a second transmission 46, a second drive 41, a second guide 61, a gripping element 43, a first drive 471, a drive-off element 44, a second drive 472 and a thread take-off guide 45.

The cover 42 is used for assembling and supporting other components of the yarn drawing device 40, and is fixedly connected with the supporting member 12, and in this embodiment, the cover has a first shell 421 and a second shell 422 which are oppositely arranged in the front-back direction, the first shell 421 is relatively arranged at the back, the second shell 422 is relatively arranged at the front, and an assembling space is defined between the first shell 421 and the second shell 422.

A second transmission mechanism 46 is relatively movably arranged in the assembly space and is adapted to carry the grip 43; the second driver 41 is disposed at the rear side of the first housing 421, and a driving shaft thereof extends forward through the first housing 421 into the assembly space and then is connected to the second transmission mechanism 46. Wherein: when the second drive 41 is in the stop standby state, the second transmission mechanism 46 and the gripper 43 are jointly kept still relative to the housing 42; when the second driver 41 is in an operating state, the second driver 41 drives the second transmission mechanism 46 to move relative to the housing 42, and the second transmission mechanism 46 drives the gripping member 43 to move.

On the movement path of the gripper 43, the first drive mechanism 471 is fitted to the gripper 43 to cause the gripper 43 to have a connecting wire gripping state and a connecting wire releasing state, and the gripper 43 can keep the connecting wire gripping state moving away from the web 1 until changing to the connecting wire releasing state.

Specifically, the gripper 43 has a first section and a second section on its movement path, and when the gripper 43 is located at the first section, the first driving mechanism 471 is fitted to the gripper 43 to bring the gripper 43 into a connecting line gripping state, so that the connecting line a on the left side of the panel 1 can be gripped; when the gripping member 43 is moved from the first section to the second section, the gripping member 43 can pull the gripped connecting line a in a direction away from the panel 1, so that the connecting line a is pulled away from the panel 1; when the grip 43 is located at the second section, the first driving mechanism 471 is fitted to the grip 43 to allow the grip 43 to be in the connection line releasing state so as to be able to release the gripped connection line a to disengage the connection line a from the grip 43. Like this, not only can take out connecting wire a from weaving piece 1, realize non-artificial drawing operation, but also can make the connecting wire a that takes out from take out take off draw-out device 40 to avoid taking out the connecting wire a load that takes out from on draw-out device 40, and then save follow-up regular to draw-out device 40 and carry out artifical clearance, practice thrift manpower and materials and time cost, guarantee that draw-out device 40 lasts the non-stop operation.

Preferably, the driving shaft of the second driver 41 is coupled to the shaped hole 4604 of the second transmission mechanism 46, and drives the second transmission mechanism 46 to rotate around the axis T extending in the front-back direction relative to the housing 42, and the second transmission mechanism 46 drives the grip 43 to rotate around the axis T; and, the grip 43 has one said first segment and one said second segment on its path of one rotation about the axis T. That is, each time the gripping member 43 rotates one turn around the axis T, the gripping member 43 completes one cycle of alternately grasping the connection line a and releasing the connection line a, and thus, the operation of grasping the connection line a and pulling the connection line a for a certain distance to release the connection line a can be completed. In this way, the second actuator 41 drives the second transmission mechanism 46 to rotate continuously around the axis T for a plurality of turns, so that the gripper 43 can pull the connecting line a away from the web 1.

The number of gripping members 43 is provided in a plurality, in the example 6, evenly distributed around the axis T. In this way, when the second driver 41 is in the operating state, a portion of the plurality of gripping members 43 is in the connecting wire gripping state to ensure continuous drawing of the connecting wire a.

The grip 43 comprises in particular a V-clip 431, an elastic member 432 and two studs 434, although in alternative embodiments only one stud 434 may be provided. The resilient member 432 is located between the two jaws of the V-clip 431; the fixed ends of the two clamping pieces are connected with each other, and the free ends of the two clamping pieces respectively comprise an antiskid plate 433; the two protruding columns 434 correspond to the two clips one by one, and are respectively connected to the outer sides of the corresponding clips and extend outwards away from the clips. When the grip 43 is in the connection wire releasing state, the boss 434 is engaged with the first driving mechanism 471 to allow the two clips to move away from each other and open under the elastic force of the elastic member 432, and the two anti-slip plates 433 are separated from each other, so that the connection wire a can enter between the two anti-slip plates 433 or fall out from between the two anti-slip plates 433; when the gripping member 43 is in the connection line gripping state, the first driving mechanism 471 abuts against the protruding column 434, so that the elastic member 432 is compressed and deformed, the two clamping pieces approach and clamp each other against the elastic force of the elastic member 432, that is, the two anti-slip plates 433 approach each other to be tightly attached to each other, and thus the connection line a entering between the two anti-slip plates 433 can be gripped.

The anti-skidding surface of every antiskid plate 433 forms a plurality of fins, and the fin on two antiskid plates 433 of same gripping member 43 is crisscross arranges, also is in when gripping member 43 is in during connecting wire gripping state, the fin on two antiskid plates 433 can not just be each other to supporting, is convenient for step up connecting wire a like this.

Specifically, the second transmission mechanism 46 includes two disks 460 disposed opposite to each other in the front-rear direction, each disk 460 having an inner side surface 4602 adjacent to the other disk 460, an outer side surface 4601 disposed opposite to the inner side surface 4602, and a peripheral side surface 4603 perpendicularly connecting the inner side surface 4602 and the outer side surface 4601. The inner side surface 4602 is provided with a first fitting portion 461, the first fitting portion 461 being a groove formed on the inner side surface 4602. The grip 43 is assembled between the two dials 460, which are coupled at the first fitting portion 461. The mounting holes 4310 at the fixing ends of the two clips correspond to the mounting holes 4610 of the first mounting portion 461, and can be disposed in the mounting holes 4310 and the mounting holes 4610 by a pin so as to prevent the grip 43 from falling out of the first mounting portion 461.

At least part of the gripping member 43 projects radially outwards beyond the second transmission means 46, through the peripheral side 4603, in order to grip the connection line a, in the present embodiment the free end of each clip and part of the anti-slip plate 433 project outside the second transmission means 46.

In addition, the boss 434 may protrude from the first fitting portion 461 through the first channel 463 in the front-rear direction out of the outer side surface 4601 of the dial 460 so as to be engaged with the first driving mechanism 471.

Specifically, the first driving mechanism 471 is provided on an inner side surface of the cover 42. In this embodiment, the inner side surface 4210 of the first shell 421 is provided with a first driving mechanism 471 so as to cooperate with one of the two posts 434 of the grip 43; the inner side 4220 of the second housing 422 is also provided with a first drive mechanism 471 for engaging with the other of the two posts 434 of the grip 43. Moreover, the first driving mechanism 471 on the second housing 422 and the first driving mechanism 471 on the first housing 421 are symmetrically disposed along a mirror plane perpendicular to the front-back direction, so that the connection line releasing state and the connection line grasping state of the grasping member 43 can be changed by the cooperation of the convex pillar 434 and the first driving mechanism 471.

The first drive mechanism 471 includes a first portion 471a that is relatively close to the second transmission mechanism 46 in the front-rear direction, a second portion 4712 that is relatively far from the second transmission mechanism 46 in the front-rear direction, and two transition portions 4711 between the first portion 471a and the second portion 4712. The first portion 471a corresponds to the first section of the grasping element 43, that is, when the pillar 434 is engaged with the first portion 471a, the first portion 471a presses the pillar 434 in the front-back direction, so that the grasping element 43 is in the connecting line grasping state; the second portion 4712 corresponds to the second section of the grip 43, that is, when the stud 434 is fitted to the second portion 4712, the stud 434 protrudes further out of the second transmission mechanism 46 in the front-rear direction by the elastic member 432 of the grip 43 itself, with the grip 43 in the connection line release state.

The transition portion 4711 is provided as a gradual slope. Thus, when the stud 434 moves from the first portion 471a through the transition portion 4711 toward the second portion 4712, the stud 434 further protrudes out of the second transmission mechanism 46 in the front-rear direction by the elastic member 432 of the grip 43 itself, and the grip 43 is gradually changed from the connection line gripping state to the connection line releasing state; conversely, when the post 434 moves from the second portion 4712 to the first portion 471a through the transition portion 4711, the first driving mechanism 471 gradually pushes the post 434 to move forward and backward toward the inside of the second transmission mechanism 46, and the grip 43 gradually changes from the connection line releasing state to the connection line gripping state.

In the present embodiment, the first portion 471a is disposed flush (i.e., coplanar) with an inner surface of the casing 42, and the second portion 4712 and the transition portion 4711 are disposed in a recessed configuration on the inner surface of the casing 42. Of course, in alternative embodiments, the first portion 471a and the transition portion 4711 may be disposed in a boss-like manner on the inner surface of the casing 42, while the second portion 4712 is disposed flush with the inner surface of the casing 42; alternatively, the first portion 471a may be disposed in a boss shape on the inner surface of the cover 42, the second portion 4712 may be disposed in a groove shape on the inner surface of the cover 42, and one end of the transition portion 4711 may be disposed in a groove shape and the other end may be disposed in a boss shape.

Referring to fig. 7 and 8, one of the two transition portions 4711 (for ease of description, the transition portion 4711 will be referred to hereinafter as the upper transition portion 4711) is located above the axis T (i.e., above the transverse plane x1 of the axis T) and is disposed generally adjacent to (or intersects with) the longitudinal plane z1 of the axis T; the other of the two transition portions 4711 (for ease of description, this transition portion 4711 will be referred to hereinafter as the lower transition portion 4711) is located below the axis T (i.e., below the transverse plane x1 in which the axis T lies) and intersects the longitudinal plane z1 (or is disposed generally adjacent to the longitudinal plane z1 in which the axis T lies).

The second portion 4712 is located to the right of the longitudinal plane z1 of axis T and most or all of the first portion 471a is located to the left of the longitudinal plane z1 of axis T. Under the driving of the second driver 41, the second transmission mechanism 46 drives the grip 43 to rotate relative to the housing 42, so that the convex pillar 434 of the grip 43 is periodically and cyclically fitted to the first driving mechanism 471 along the sequence of the second portion 4712, the upper transition portion 4711, the first portion 471a and the lower transition portion 4711. That is, during one rotation, the grip 43 is mainly in the connecting wire releasing state at the right side of the longitudinal plane z1 where the axis T is located, gradually changes from the connecting wire releasing state to the connecting wire gripping state above the transverse plane x1 where the axis T is located, and then keeps rotating the connecting wire gripping state leftward and downward until gradually changing from the connecting wire gripping state to the connecting wire releasing state below the transverse plane x1 where the axis T is located, and a cycle is completed. In this way, the gripping member 43 can be made to gradually grip the joining line a falling inside the V-clip 431 of the gripping member 43 above the transverse plane x1 on which the axis T lies, and then to pull the joining line a leftward away from the panel 1 until the pulling line a is gradually released below the transverse plane x1 on which the axis T lies, thereby achieving the pulling and releasing of the joining line a.

Further, the dislodging element 44 is arranged on the second transmission 46 and rotates synchronously with the second transmission 46 around the axis T. When the second transmission mechanism 46 rotates about the axis T and when the grip 43 is in the connection wire releasing state, the second driving mechanism 472 is coupled to the driving and disengaging member 44 to reciprocate the driving and disengaging member 44 radially relative to the grip 43 and the second transmission mechanism 46, thereby driving the connection wire a to be disengaged from the grip 43.

Specifically, the driving member 44 includes an inner end 441, an outer end 442, and a guided portion 443. The inner end 441 is provided as a flat plate extending in the radial direction and parallel to the axis T; one end of the inner end 441 is disposed at the second fitting portion 462 at the inner side surfaces 4601 of the two rotating disks 460, and the other end thereof is connected to the outer end 442 after passing through the circumferential side surfaces 4603 of the rotating disks 460; the outer end 442 is exposed from the peripheral side surface 4603, and is provided as a plate having a circular arc shape in a vertical plane to the axis T.

The driving and disengaging gear 44 is connected to the second transmission 46 in a reciprocating manner in the radial direction. The radial distance between the outer end 442 and the axis T when the gripping member 43 is located in the first section is smaller than the radial distance between the outer end 442 and the axis T when the gripping member 43 is located in the second section, that is, when the gripping member 43 moves from the first section to the second section, the driving member 44 generates a radial displacement away from the axis T, so that when the gripping member 43 is in the connecting line releasing state, if the connecting line a is not successfully separated from the gripping member 43, the driving member 44 can push the connecting line a to be separated from the gripping member 43 by the radial displacement away from the axis T, thereby avoiding the connecting line a from being wound on the yarn drawing device 40 because the connecting line a is not separated from the gripping member 43, and further ensuring that the yarn drawing device 40 continuously runs without stopping.

Specifically, the guided portion 443 connects the inner end portion 441 and protrudes from the inner end portion 441 in the front-rear direction, and the guided portion 443 protrudes out of the outer side surface 4601 of the rotating disc 460 through the second passage 4620 so as to be engaged with the second driving mechanism 472.

The second drive mechanism 472 is provided on the inner side surface of the cover 42. In this embodiment, the inner surface 4210 of the first housing 421 is provided with a second drive mechanism 472 so as to be engaged with the guided portion 443. Of course, in alternative embodiments, the second drive mechanism 472 may instead be disposed on the inner side 4220 of the second housing 422, or the second drive mechanism 472 may instead be disposed on both the inner side 4220 of the second housing 422 and the inner side 4210 of the first housing 421.

The second driving mechanism 472 is provided as an eccentric guide groove around the axis T, and the guided portion 443 is inserted into the guide groove in the front-rear direction, so that, when the second transmission mechanism 46 rotates about the axis T, the guided portion 443 slides along the guide groove and is radially displaced relative to the axis T by being pushed by the groove wall of the guide groove.

The second drive mechanism 472 has a farthest stroke position 4721 at a maximum radial distance from the axis T and a closest stroke position 4722 at a minimum radial distance from the axis T. The proximal-most travel position 4722 is located radially inward of the first portion 471a and/or the upper transition portion 4711 such that when the drive member 44 is moved to the proximal-most travel position 4722, the gripping member 43 is in the tie-line release position, facilitating the tie-line a to fall into the V-clip 431 for the gripping member 43 to successfully grip the tie-line a. Farthest stroke position 4721 is radially inward of second portion 4712 of first drive mechanism 471, i.e., the same radial line centered on axis T may intersect farthest stroke position 4721, second portion 4712 of first drive mechanism 471. And, the furthest stroke position 4721 is disposed adjacent the lower transition portion 4711 such that when the dislodging member 44 is moved to the furthest stroke position 4721, the corresponding gripping member 43 is in the line release state, with the guided portion 443 being displaced radially maximally relative to the axis T to ensure that the line a is successfully severed from the gripping member 43.

In addition, the inner end portion 441 is provided with a slide slot 4410 at the middle portion, and a bearing roller 49 can be disposed in the bearing slot 4621 of the second transmission mechanism 46 through the slide slot 4410 so as to facilitate the driving member 44 to reciprocate in the radial direction relative to the second transmission mechanism 46.

And, a driving and separating piece 44 is arranged between any two adjacent gripping pieces 43, namely, the yarn drawing device 40 comprises a plurality of driving and separating pieces 44, and the plurality of driving and separating pieces 44 are uniformly distributed around the axis T.

The second guide 61 is preferably provided as a flat plate perpendicular to the left-right direction, is provided on the right side of the cover 42, and has a second guide groove 610 corresponding to the position of the grip 43 and a second opening above the second guide groove 610. The second guide groove 610 extends in the longitudinal direction. The second opening is gradually enlarged from bottom to top, the specific structure is similar to the first opening, and details are not repeated herein, so that the connecting wire a in the second opening can be guided into the second guide groove 610, and the corresponding connecting wire a is smoothly guided into the V-shaped clip 431, so as to ensure that the connecting wire a is gripped and pulled.

Preferably, the second guide groove 610, the first guide groove 230, the edge connecting the first cutter 24 and the V-clip 431 are arranged in a collinear manner and are located on a same straight line extending from left to right. In this way, the connecting wire a is easily fitted to these components.

Referring to fig. 5a and 5b, the sensing module comprises a second sensor 73, the second sensor 73 is arranged at the thread-drawing device 40 and is used for sensing the connecting line a on the left side of the fabric sheet 1. Specifically, the right side of the second guide 61 is provided with a flat plate 613 perpendicular to the front-rear direction, and the second sensor 73 is mounted on the flat plate 613 and is used to sense whether the connection line a falls into the second guide groove 610. Preferably, the flat plate 613 is provided with a mounting groove extending longitudinally; the second sensor 73 is disposed in the mounting groove, and in the assembling stage, the second sensor 73 can slide up and down along the mounting groove to adjust the height of the second sensor 73.

The second sensor 73 is configured to: when the connecting line a is sensed, the second sensor 73 generates a second connecting line position signal. The second sensor 73 may preferably be provided as a photoelectric sensor or the like.

The control module is configured to: connect the second sensor 73 and receive the second link position signal from the second sensor 73; and connecting the second driver 41, and controlling the second driver 41 to change from the shutdown standby state to the running state when receiving the second connecting line position signal. Thus, when the second sensor 73 detects the connecting line a, the corresponding connecting line a falls into the second guide groove 610 and the gripping member 43, and the control module controls the second driver 41 to be activated, so that the gripping member 43 grips the connecting line a and starts to pull the connecting line a leftward, so that the connecting line a is gradually pulled leftward away from the panel 1.

Further, a yarn discharging guide 45 is assembled below the cover 42 and serves to guide the drawn-out connecting yarn a so that the connecting yarn a smoothly falls downward, and includes a first yarn discharging guide plate 451 and a second yarn discharging guide plate 452. The upper end of the first yarn outlet guide plate 451 is fixedly connected with the second shell 422 and inclines backwards and extends from top to bottom; the upper end of the second yarn-discharging guide plate 452 is fixedly connected to the first housing 421 and extends forward from top to bottom. The lower end of the thread outlet guide 45 has a thread outlet formed between the first thread outlet guide 451 and the second thread outlet guide 452, through which the thread a can fall out of the thread drawing device 40 after being released by the gripping element 43.

The sensing module comprises a third sensor 74, the third sensor 74 is arranged at the thread drawing device 40 and is used for sensing the connecting line a in the thread outlet guide 45. The third sensor 74 is arranged at the right end of the yarn exit guide 45 between the first yarn exit guide plate 451 and the second yarn exit guide plate 452, and the connecting line a is located within the sensing range of the third sensor 74 when the connecting line a falls from the grip 43 to the yarn exit.

Third sensor 74 is configured to: when it is sensed that the connecting line a falls from the grip 43 toward the yarn outlet, the third sensor 74 generates a third connecting line position signal. The third sensor 74 may preferably be provided as a photo sensor or otherwise.

The control module is configured to: connecting a third sensor 74 and receiving said third link position signal from third sensor 74; and when the second driver 41 continuously operates until a preset condition is met, judging whether the third connecting line position signal is received, and if the third connecting line position signal is not received, controlling the second driver 41 to change from the operating state to the shutdown standby state. In this way, when the connecting thread a is not successfully disengaged from the grip 43, the second driver 41 can be prevented from being stopped in time to prevent the connecting thread a from being wound into the drawing device 40.

The control module is further configured to: when the third connecting line position signal is not received and the second driver 41 is controlled to change from the running state to the stop-standby state, the alarm of the yarn shearing and drawing device 100 is also controlled to start an alarm. Preferably, the alarm and the alarm based on the position variation signal may be implemented by different alarms, or may be implemented by the same alarm but in different alarm modes, so as to distinguish the two alarms.

In addition, the aforementioned "when the second driver 41 continues to operate until the preset condition is satisfied" has various implementations. For example, the preset condition is set that the second driver 41 drives the second transmission mechanism 46 to rotate around the axis T by a preset rotation angle, so that when the second driver 41 continuously operates and the second driver 41 drives the second transmission mechanism 46 to rotate around the axis T by the preset rotation angle, it is determined that the second driver 41 continuously operates until the preset condition is met; the preset rotation angle is preferably set to not less than 180 °. For another example, the preset condition is set as a preset duration, so that when the second driver 41 continuously operates until the preset duration is reached, it is determined that the second driver 41 continuously operates until the preset condition is met; the preset period of time is preferably not less than the period of time during which the second transmission 46 is rotated 180 ° about the axis T.

Referring to fig. 5a to 5b, a specific structure of the protector 60 of the present embodiment will be described. In the present embodiment, a guard 60 is provided on the right side of the drawing device 40, which includes a cloth piece stop and a position sensor 62.

The cloth piece limiting member may also be used as the second guide member 61 of the yarn drawing device 40 (in other words, the limiting member and the second guide member 61 are integrally provided), which is provided as a flat plate perpendicular to the left-right direction, and includes a connecting line passage, a micro-motion portion 611, and a fixing portion 612.

The connecting line channel penetrates through the weaving piece limiting part in the left-right direction, so that the connecting line a can penetrate from right to left and the weaving piece 1 can be prevented from penetrating from right to left. The micro-motion part 611 is arranged on one side of the connecting line channel and can move along the direction from the right to the left under the action of external force, so that when the weaving piece 1 is pulled by the drawnwork device 40 and is intended to pass through the connecting line channel, the weaving piece 1 can touch the micro-motion part 611 to push the micro-motion part 611 to move along the direction from the right to the left. The position sensor 62 is provided on the side of the fine movement portion 611, and in the present embodiment, is preferably provided on the left side of the fine movement portion 611, and is configured to: the position variation of the fine movement part 611 is sensed, and when the position variation of the fine movement part 611 is sensed, a position variation signal can be generated. Accordingly, the control module is configured to: the signal receiving terminal is connected to the position sensor 62 so as to receive the position difference signal from the position sensor 62, and is connected to the start-stop terminal of the yarn drawing device 40 (specifically, the start-stop terminal of the second driver 41), so that the yarn drawing device 40 can be controlled to start or stop according to the position difference signal, that is, the second driver 41 is controlled to be in an operating state or a stop standby state.

Thus, when the second actuator 41 is in the operating state, if the weaving piece 1 is not pulled to the weaving piece stopper, the micro-motion portion 611 does not perform position variation under the pushing of the weaving piece 1, and the second actuator 41 keeps the operating state; if the weaving piece 1 is excessively pulled to the weaving piece limiting part, the weaving piece 1 is stopped by the limiting part to avoid tearing of the weaving piece 1, the weaving piece 1 can be prevented from being pulled into the yarn drawing device 40 to cause the yarn drawing device 40 to be blocked, the quality of the weaving piece 1 and the operation stability of the yarn shearing and drawing equipment 100 are further ensured, the micro-motion part 611 can be triggered in the weaving piece 1, the position abnormal motion of the micro-motion part 611 is detected by the position sensor 62, the yarn drawing device 40 can be timely controlled to stop, the damage of the weaving piece 1 caused by the fact that the yarn drawing device 40 continuously draws the connecting line a is avoided, and the phenomenon that the connecting line a is broken to cause the fact that two adjacent weaving pieces 1 cannot be effectively separated can also be avoided.

And in this embodiment, the control module is further configured to: the start-stop terminal of the alarm of the yarn shearing and drawing equipment 100 is connected, so that the start or stop of the alarm of the yarn shearing and drawing equipment 100 can be controlled according to the position transaction signal, the alarm of the yarn shearing and drawing equipment 100 is controlled to start or stop alarming, and the alarm can be any one or more of a loudspeaker, a lamp, a display screen and the like.

Further, the connecting wire channel extends vertically and has a closed end at a lower portion, an open end at an upper portion opposite to the closed end in the vertical direction, and two channel walls disposed between the closed end and the open end, and the connecting wire a can enter the connecting wire channel from top to bottom through the open end. In this embodiment, the connecting wire passage also forms a second guide groove 610 (in other words, the connecting wire passage and the second guide groove 610 are integrally provided).

A stop projection 6101 projects from one of the two channel walls towards the other of the two channel walls to prevent the web 1 from passing through the connecting line channel. Preferably, a plurality of stopping protrusions 6101 are uniformly distributed on the two channel walls, and the stopping protrusions 6101 on the two channel walls are in front-back mirror symmetry. The fine motion part 611 is provided as a flat plate arranged perpendicularly to the left-right direction, and one of the two channel walls is formed on the fine motion part 611, and in this embodiment, the fine motion part 611 is located on the front side of the connecting wire channel.

In addition, the protection device 60 may also have other implementation manners, and a variation embodiment is described herein, where the protection device 60 also includes a fabric limiting member the same as the embodiment shown in the drawings in the variation embodiment, and the description of the fabric limiting member is not repeated. In this modified embodiment, the protection device 60 further includes a microswitch, and the microswitch is disposed on a movement path of the position variation of the micro-motion portion (the micro-motion portion 611 in the embodiment shown in the attached drawings) of the cloth piece limiting member; the microswitch is connected with a start-stop terminal of the drawnwork device 40 (specifically, the start-stop terminal of the second driver 41), and has a conducting state for connecting the start-stop terminal of the drawnwork device 40 and a separating state for disconnecting the start-stop terminal of the drawnwork device 40; when the micro-motion part generates position variation, the micro-motion part can trigger or disconnect the micro-motion switch so as to enable the micro-motion switch to be switched between the conducting state and the separating state. In this way, the modified embodiment can also prevent the fabric piece 1 from being torn or the yarn drawing device 40 from being locked due to the fabric piece 1 being excessively pulled, and prevent the connecting line a from being broken to prevent the two adjacent fabric pieces 1 from being effectively separated. In one specific example, the microswitch and the jogging part are arranged side by side from left to right and are separated from each other, and when the jogging part is subjected to position variation, the microswitch can be triggered by the jogging part, so that the microswitch is changed from the conducting state to the separating state, and the yarn drawing device 40 is changed from the running state to the stop-standby state; in another specific example, the microswitch and the microswitch part are arranged side by side from right to left and are in contact with each other, and when the position of the microswitch part is changed, the microswitch can be disengaged by the microswitch so that the microswitch is changed from the on state to the off state, and the yarn drawing device 40 is changed from the operating state to the stop standby state.

Next, referring to fig. 14, a specific structure of the second yarn cutting device 30 of the present embodiment will be described. The second yarn cutting device 30 is used for cutting the connecting line a on the left side of the yarn drawing device 40, so that the connecting line a drawn by the yarn drawing device 40 has a free left end, the connecting line a is prevented from being drawn by the flat knitting machine to be interfered by the traction of the flat knitting machine on the connecting line a when the yarn drawing device 40 draws the connecting line a, the connecting line a can be separated from the yarn shearing and drawing device 100, and the connecting line a is prevented from being wound and entangled on the yarn shearing and drawing device 100 or between the yarn shearing and drawing device 100 and the flat knitting machine.

The second yarn cutting device 30 has substantially the same structure as the first yarn cutting device 20 and is disposed substantially opposite to the left and right, and specifically includes a second box 31 having a structure similar to the first box 21, a third driver 32 having a structure similar to the first driver 22, a third guide 33 having a structure similar to the first guide 23, a connecting wire second cutter 34 having a structure similar to the connecting wire first cutter 24, a third transmission mechanism having a structure similar to the first transmission mechanism, and a second fixing member having a structure similar to the fixing member 26. The differences between the second yarn cutting device 30 and the first yarn cutting device 20 will be described below, and the description of the same parts will be omitted.

The second yarn cutting device 30 is integrally arranged obliquely relative to the first yarn cutting device 20, the connecting line second cutter 34 is arranged at the upper left of the yarn drawing device 40, and the knife edge of the connecting line second cutter 34 extends obliquely from bottom to top rightwards, namely, the middle pivot axes of the two shear blades of the connecting line second cutter 34 are perpendicular to the front-back direction and form acute angles with the left-right direction, so that the connecting line second cutter is conveniently matched with the yarn drawing device 40, and the left end of the connecting line a is cut by the first yarn cutting device 20 after the gripping part 43 effectively grips the connecting line a.

Referring to fig. 2a, 2b and 14, the sensing module includes a fourth sensor 72, and the fourth sensor 72 is disposed at the second yarn cutting device 30 and is used for sensing the connecting line a located at the left side of the yarn drawing device 40. Specifically, the position of the fourth sensor 72 corresponds to the position of the knife edge of the second cutter 34 of the connecting wire and is located at the lower right of the second cutter 34 of the connecting wire, and the second cutter 34 of the connecting wire, the third guide 33 and the fourth sensor 72 are sequentially arranged. The fourth sensor 72 includes a third sensing part 721 and a fourth sensing part 722 signal-interacting with the third sensing part 721. The fourth sensing portion 722 and the third sensing portion 721 are disposed opposite to each other at an interval, and a gap therebetween corresponds to positions of both the third guide groove of the third guide 33 and the edge of the connecting wire second cutting knife 34, and when the connecting wire a falls into the gap between the fourth sensing portion 722 and the third sensing portion 721, the connecting wire a also falls into the third guide groove of the third guide 33 and the edge of the connecting wire second cutting knife 34.

The fourth sensor 72 is configured to: when sensing the connection line a falling in the gap between the fourth sensing part 722 and the third sensing part 721, the fourth sensor 72 generates a fourth connection line position signal. The fourth sensor 72 may preferably be provided as a photo sensor or otherwise.

The control module is configured to: connecting the fourth sensor 72 through a signal receiving terminal to receive the fourth connection line position signal from the fourth sensor 72; and connecting the third driver 32, and controlling the third driver 32 to change from the shutdown standby state to the running state when receiving the fourth connecting line position signal. In this way, when the fourth sensor 72 detects that the connection line a enters the gap between the fourth sensing portion 722 and the third sensing portion 721, the corresponding connection line a also falls into the cutting edge of the connection line second cutter 34, and at this time, the control module controls the third driver 32 to start, so that the connection line second cutter 34 cuts off the connection line a.

Next, referring to fig. 15, 16 and 2b, a specific structure of the yarn cutting device 50 of the present embodiment will be described.

The yarn cutting device 50 includes a third support frame 57, a fourth driver 52, a third box 53, a fifth driver 54, a knitting yarn cutter 55, and a third transmission mechanism 56.

The third support bracket 57 is used for assembling and supporting other components of the yarn cutting device 50, and is fixedly connected with the support 12. Preferably, the third support frame 57 includes a piece-guiding surface 51 on the upper portion thereof, the knitting guiding surface 51 is provided as a slant surface extending obliquely downward from the upper end thereof to the lower end thereof, the upper end of the knitting guiding surface 51 and the lower end of the knitting guiding surface 51 are separated from the front and rear sides of the piece drooping surface, that is, the upper end of the knitting guiding surface 51 is located behind the first guide groove 230 and the second guide groove 610, and the lower end of the knitting guiding surface 51 is located in front of the first guide groove 230 and the second guide groove 610, so that when the piece 1 droops down in the longitudinal direction to pass through the shearing and drawing apparatus 100, the piece 1 can drooping down on the piece-guiding surface 51 and continue sliding obliquely forward along the piece-guiding surface 51.

The fourth driver 52 is installed at the right end of the third supporting frame 57, and the driving shaft thereof is connected with the third transmission mechanism 56 arranged in the third supporting frame 57; the third transmission mechanism 56 is provided as a transmission rod extending in the left-right direction, preferably as a lead screw. The third box 53 is movably connected with the transmission rod, and the braided wire cutting knife 55 is arranged in the third box 53 and movably connected with the transmission rod under the carrying of the third box 53.

When the fourth driver 52 is in the stop standby state, the third container 53 is located at the right end start position. When the fourth driver 52 is in the running state, the fourth driver 52 has a forward driving phase and a reverse resetting phase that are sequentially performed: first, in the forward driving phase, the fourth driver 52 drives the third box 53 and the braided wire cutter 55 to translate from the right end starting position to the left end position through the transmission rod; then, in the reverse reset phase, the fourth driver 52 drives the third box 53 and the braided wire cutter 55 to translate from the left end position to the right end position through the transmission rod; after the third cassette 53 returns to the right-end start position, the fourth driver 52 resumes the stop standby state to wait for the next cutting work to be performed. In this way, in the process that the knitting line cutter 55 reversely returns to the right end initial position after moving from the right end initial position to the left end position, the knitting line cutter 55 generates displacement perpendicular to the traveling direction of the knitting piece 1 with respect to two adjacent knitting pieces 1, so that the knitting line cutter 55 cuts the knitting line b.

The fourth driver 52 is preferably a stepping motor, which can position the right end starting position and the left end ending position of the third box 53 in cooperation with the positioning sensor, and the conventional stepping motor can be referred to for the adaptive structure and function of the positioning sensor and the stepping motor, which is not described again.

In the present embodiment, when the fourth driver 52 is in the operating state, the braided wire cutting knife 55 moves from the right end starting position to the left end terminating position and then reversely returns to the right end starting position, but in an alternative embodiment, the braided wire cutting knife 55 moves from the left end starting position to the right end terminating position and then reversely returns to the left end starting position when the fourth driver 52 is in the operating state.

Further, the third container 53 is located below the third supporting frame 57, and has an upper top plate 532, a lower bottom plate disposed opposite to the upper top plate 532, and a side wall plate 531 extending substantially vertically downward from an edge of the upper top plate 532, the side wall plate 531 connecting the upper top plate 532 and the lower bottom plate.

A braided wire cutter 55 is provided in the third case 53 and exposed from the inside of the third case 53. Specifically, the side wall plate 531 is covered in front of the braided wire cutter 55 and on the left side of the braided wire cutter 55, the upper top plate 532 is covered above most of the braided wire cutter 55, and on the top-down projection plane, referring to fig. 16, the rest of the small part of the braided wire cutter 55 (specifically, a small part of the cutting edge of the braided wire cutter 55) is exposed outside the right side edge of the upper top plate 532, so that when the third box 53 carries the braided wire cutter 55 and translates from right to left, the side wall plate 531 can cover the braided wire cutter 55 to prevent the braided wire cutter 55 from cutting the fabric pieces 1, and so that when the third box 53 carries the braided wire cutter 55 and translates from left to right, the braided wire cutter 55 can be exposed at the right side edge of the upper top plate 532 to cut the braided wire b between two adjacent fabric pieces 1, even when the connecting wire a is not pulled out due to abnormality of the drawstring device 40, the connecting wires a are collectively cut by the knitting wire cutter 55. Of course, in an alternative embodiment, the side wall plate 531 may be changed to shield the front of the braided wire cutter 55 and the right side of the braided wire cutter 55, and correspondingly, the rest of the braided wire cutter 55 (specifically, a small portion of the cutting edge of the braided wire cutter 55) is exposed outside the left edge of the upper top plate 532, so that the braided wire cutter 55 cuts the braided wire b when moving from right to left, and when the braided wire cutter 55 moves from left to right, the side wall plate 531 may shield the braided wire cutter 55 to prevent the braided wire cutter 55 from cutting the fabric piece 1.

Further, lateral wall board 531 includes the piece spigot surface of weaving that is located knitting line cut-off knife 55 the place ahead at least partially, it follows along being acute angle slope with left and right directions and extends to its front end 5310 to weave the piece spigot surface, in this embodiment, it extends from left rear direction right place ahead slope to weave the piece spigot surface, like this, when knitting line cut-off knife 55 is by right-hand member initial position left end position translation, can make and weave piece 1 edge weave the piece spigot surface and slide so that third box body 53 carries knitting line cut-off knife 55 and move smoothly to the left side of weaving piece 1, and avoids third box body 53 and knitting line cut-off knife 55 fish tail to weave piece 1. Specifically, the fabric guide surface may be a flat surface, or may be an arc surface or a multi-step flat surface, and for example, in this embodiment, the fabric guide surface includes a first surface 5311 having a larger inclination angle than the left-right direction and a second surface 5312 having a smaller inclination angle than the left-right direction, which are connected to each other.

Preferably, the rear end of the fabric piece guide surface is covered by the fabric piece guide surface 51 in the up-down direction, that is, the rear end of the fabric piece guide surface is located directly below the fabric piece guide surface 51; in the left-right direction, the rear end of the weaving piece guide surface and the front end 5310 of the weaving piece guide surface are separated from the left side and the right side of the weaving line cutter 55, that is, the side wall plate 531 is completely covered in front of the weaving line cutter 55, so that the weaving piece 1 is prevented from being accidentally scratched.

In addition, the braided wire cutter 55 is provided as a circular cutter perpendicular to the up-down direction; the fifth driver 54 is assembled below the third box 53, and a transmission shaft thereof penetrates through the lower base plate and extends into the third box 53 to be connected with the braided wire cutter 55, so as to drive the braided wire cutter 55 to rotate around an axis parallel to the up-down direction, thereby cutting the braided wire b.

Further, the sensing module comprises a fifth sensor 75, the fifth sensor 75 is configured at the yarn cutting device 50 and is used for sensing the position of the weaving sheet 1, i.e. the fifth sensor 75 is configured as a weaving sheet position sensor. The fifth sensor 75 is specifically located above the third box 53 and is fixedly assembled at the rear side of the third supporting frame 57, and preferably, a second mounting groove extending transversely is formed in the rear side of the third supporting frame 57; the fifth sensor 75 is disposed in the second mounting groove, and in the assembling stage, the fifth sensor 75 can slide left and right along the second mounting groove, so that the position of the fifth sensor 75 in the left and right direction is adapted to the weaving pieces 1 with different sizes.

The fifth sensor 75 is configured to: the fifth sensor 75 generates a panel position signal when sensing the movement of the panel 1 to a preset position. The fifth sensor 75 may preferably be provided as a photo sensor or otherwise.

The control module is configured to: a signal receiving terminal thereof is connected to the fifth sensor 75 and receives the weaving position signal from the fifth sensor 75; and a start-stop terminal connected to the fourth driver 52 and a start-stop terminal connected to the fifth driver 54, and configured to control the fourth driver 22 to change from a stop standby state to an operating state when receiving the weaving position signal, and to control the fifth driver 54 to operate at least when the fourth driver 22 performs the negative driving stage, so that the knitting wire cutter 55 cuts the knitting wire b. Of course, the control module may also control the operation of the fifth driver 54 when the fourth driver 22 executes the forward drive phase.

Claims

1. The utility model provides a flat knitting machine cuts draw-out equipment, its characterized in that includes first yarn device, broken yarn device, draw-out device and controlling means of cutting out, first yarn device of cutting out the broken yarn device draw-out device and lay in proper order about in the direction, first yarn device of cutting out with draw-out forms between the yarn device and weave piece walking passageway, the broken yarn device is located weave piece walking passageway is last, first yarn device of cutting out includes the first cut-off knife of connecting wire, draw-out the yarn device and include gripping member and drive the second driver of gripping member motion, the broken yarn device is including weaving line cut-off knife and drive weave line cut-off knife along the fourth driver of controlling the direction reciprocating motion, controlling means includes control module, control module control the second driver with opening of fourth driver stops.

2. The flat knitting machine yarn cutting and drawing device according to claim 1, further comprising two cross bars arranged in parallel, the cross bars extending in a left-right direction, at least one of the yarn drawing device and the first yarn cutting device being slidably attached to the two cross bars in the left-right direction so that the yarn drawing device and the first yarn cutting device are relatively distant from or relatively close to each other in the left-right direction.

3. The flat knitting machine shearing and drawing device as claimed in claim 1, characterized in that the drawing device further comprises a second transmission mechanism connected with the second driver, the gripping member is arranged on the second transmission mechanism, and the second driver drives the second transmission mechanism to drive the gripping member to rotate around the axis.

4. The flat knitting machine shearing draw-off device according to claim 3, characterized in that the draw-off device further comprises a housing and a first driving mechanism located on the housing and arranged around the axis;

5. The flat knitting machine yarn cutting device according to claim 4, wherein the second transmission mechanism includes two rotating discs arranged side by side with the housing in a direction parallel to the axis, the housing having an inner surface arranged proximate to the rotating discs;

6. The flat knitting machine shearing and drawing device according to claim 4, characterized in that the drawing device further comprises a driving and disengaging member provided on the second transmission mechanism and a second driving mechanism provided on the housing and arranged around the axis;

7. The flat knitting machine yarn cutting device according to claim 6, wherein the second transmission mechanism is disposed side by side with the housing in a direction parallel to the axis, the housing having an inner surface disposed proximate to the second transmission mechanism;

8. The flat knitting machine yarn cutting and drawing device according to claim 1, characterized in that the yarn cutting and drawing device further comprises a protection device disposed on a side of the yarn drawing device close to the first yarn cutting device, the protection device comprising:

9. The flat knitting machine yarn cutting and drawing device according to claim 1, characterized in that the yarn cutting and drawing device further comprises a second yarn cutting device, the second yarn cutting device is arranged on one side of the yarn drawing device, which is far away from the first yarn cutting device, and the second yarn cutting device comprises a connecting wire second cutter and a third driver for driving the connecting wire second cutter;

10. The flat knitting machine yarn cutting and pulling apparatus according to claim 1, wherein the knitting yarn cutter is located below the connecting yarn first cutter and the gripper;