CN106948079A - It is a kind of automatically increase or decrease yarn take yarn device and its three dimensional knitting machine of application - Google Patents

Abstract

The invention discloses a yarn carrier capable of automatically increasing or decreasing yarn, comprising a main body of the yarn carrier, a yarn increasing and decreasing mechanism, a yarn loading mechanism and a driving mechanism arranged on the main body of the yarn carrying device, the increasing and decreasing yarn mechanism is located on the yarn carrying device On the upper part of the main body, the yarn carrying mechanism is located in the middle of the main body of the yarn carrier, and the driving mechanism is located at the bottom of the main body of the yarn carrier. It solves the problems that when the existing yarn carrier performs variable cross-section knitting, the fineness of the knitting yarn needs to be changed manually, the movement track of the yarn carrier needs to be changed, or debris needs to be introduced to realize the increase or decrease of the yarn. The invention also discloses a three-dimensional knitting machine using the yarn carrier. It includes the weaving frame and the lead-off motor set on the weaving frame, the preforming chuck, the chassis and multiple yarn carriers. The chuck is located directly above the yarn carrier, and is fixed on the braiding frame through a connecting rod.

Description

A yarn carrier that can automatically increase or decrease yarn and its applied three-dimensional knitting machine

technical field

The invention belongs to the field of three-dimensional knitting machine equipment, and relates to a yarn carrier that can automatically increase or decrease yarn. The invention also relates to a three-dimensional knitting machine using the yarn carrier.

Background technique

Three-dimensional weaving technology is a new type of composite material manufacturing technology. The composite material prefabricated parts made by it have many advantages such as light weight, high strength, and excellent mechanical properties. It has been widely used in the field and has been continuously expanded to the civilian field.

The three-dimensional knitting machine is a device for weaving three-dimensional braided fabrics. The yarn carrier 4 moves regularly on the chassis 5, so that the yarns are interwoven in space to form prefabricated parts with equal or variable cross-sections. The preforming chuck 2 is driven by the lead-off motor 1 to leave the knitting area gradually. At present, there are four-step method and two-step method that are relatively mature in research. The yarn carriers carried by existing three-dimensional knitting machines cannot realize automatic increase and decrease of yarns because they cannot realize their own independent drive control.

The yarn carrier is a very important part of the three-dimensional knitting machine. The traditional yarn carrier is usually equipped with only one yarn drum, which carries the yarn into weaving. Using this type of yarn carrier, the method to be used when realizing the weaving of variable cross-section prefabricated parts is the unit size reduction method or the unit quantity reduction method, but when the unit size reduction method is used, problems such as fluffing and thread breakage are prone to occur. In addition, When knitting with variable cross-section, it is necessary to stop the machine for manual intervention, and the method of reducing the number of units will make it more difficult to control the yarn carrier. Both methods make the knitting work efficiency low.

Contents of the invention

The object of the present invention is to provide a yarn carrier that can automatically increase or decrease the yarn, which solves the need to manually change the fineness of the knitting yarn, change the movement track of the yarn carrier or need to change the cross section of the existing yarn carrier. The problem of adding and subtracting yarns is achieved by introducing debris.

The technical solution adopted in the present invention is a yarn carrier that can automatically increase or decrease yarn, including a yarn carrier main body, a yarn increasing and decreasing mechanism, a yarn loading mechanism and a driving mechanism arranged on the yarn carrying device main body, and the yarn increasing and decreasing The mechanism is located on the upper part of the main body of the yarn carrier, the yarn loading mechanism is located in the middle of the main body of the yarn carrier, and the driving mechanism is located at the bottom of the main body of the yarn carrier.

The present invention is also characterized in that the main body of the yarn carrier is cylindrical as a whole, and a motor spindle is arranged at the center of the yarn carrier. The yarn increasing and decreasing mechanism is arranged on the top of the yarn carrying device. Rod, four yarn fixing devices are evenly distributed around the motor shaft, the rotating rod is connected with the motor shaft, and the middle part of the main body of the yarn carrier has four open cavities with a fan-shaped cross section and a certain height. Four yarn-carrying mechanisms are respectively fixed in the bottom surface, and the yarn-carrying mechanisms include a one-way self-locking mechanism, a yarn bobbin and a tension control mechanism.

The structure of the yarn fixer includes a yarn fixer bracket fixed on the top of the main body of the yarn carrier and a yarn fixer ring installed on the yarn fixer bracket. The yarn fixer bracket includes vertical pillars and transverse pillars arranged perpendicularly to each other. The straight pillar is vertically fixed on the top of the main body of the yarn carrier, one end of the horizontal pillar is connected with the vertical pillar, and the other end is fixedly connected with a yarn guide ring, and a yarn fixing ring is arranged under the yarn guide ring, and the yarn fixing ring is connected to the vertical yarn through the connecting arm. The pillars are fixed together, and the yarn-fixing ring includes a yarn-locking end and a yarn-pressing end that can be fastened together.

The yarn pressing end is set in contact with the top block. One end of the top block is in contact with the yarn pressing end, and the other end is fixed on the pressing block. The pressing block has an inclined surface, which is set opposite to the fixed surface of the top block. Two L-shaped arms are arranged on both sides of the block. The long end of the L-shaped arm is fixed to the vertical column. A spring is arranged between the short arm of the L-shaped arm and the pressing block. The distance between them should be greater than the width of the top block, and less than the width of the compacting block. A downward pressing movable block is arranged above the slope of the compacting block. The downward pressing movable block passes through the transverse pillar and can move up and down.

The rotating rod includes a ring and a connecting rod connected together. The ring is set on the motor shaft and can rotate with the rotation of the motor shaft. The connecting rod is perpendicular to the center line of the ring; the end of the connecting rod is fixedly connected with a The fixed block is vertically arranged with the connecting rod, and the yarn pushing grip is installed under the fixed block through bolts and is parallel to the connecting rod. The end of the connecting rod is fixedly connected with a cutting knife, and the working surface of the cutting knife is opposite to the working surface of the yarn pushing grip.

The one-way self-locking mechanism is fixed on the bottom surface, and the two are fixedly connected by bolts. The yarn bobbin shaft is installed on the bottom surface. The block and the upper block of the bobbin are respectively welded on the upper and lower ends of the bobbin, the lower block of the bobbin is kept in contact with the one-way self-locking mechanism, and the back of the bobbin is provided with an arc-shaped support plate, and the bobbin is worn on the shaft of the bobbin. The bobbin is located on the self-locking mechanism.

The arc-shaped support plate is welded on the bottom plate, and the arc-shaped support plate is connected with the tension control mechanism. The tension control mechanism includes a support frame connected to the arc-shaped support plate and two parallel beams, and one end of the two beams is respectively fixed on the support The arc support plate on both sides of the frame.

The other ends of the two beams are installed vertically downward with two springs, and the upper shaft of the beam is vertically arranged in the middle of the two beams. The two ends of the upper shaft of the beam pass through the two beams respectively, and the two ends behind the beam The upper part of the beam is connected with two support columns, the support column is perpendicular to the upper axis of the beam, and the upper axis of the beam can rotate in the beam; the middle part of the upper axis of the beam is provided with a pulley B, which is connected by glue; the two support columns The end is connected to the lower shaft of the beam, and the middle part of the lower shaft of the beam is provided with a pulley A. One end of the spring is connected to the beam, and the other end is connected to the lower shaft of the beam. The two springs are respectively located on both sides of the pulley A near the supporting column. Sticky glue connection. There is a through hole on the supporting frame, and the position of the through hole is above the bobbin shaft.

The driving mechanism of the yarn carrier includes a driving motor and a motor gear connected with the driving motor. The driving motor is fixed on the lower part of the main body of the yarn carrier through bolt connection. The motor gear is connected with the toothed belt, and the toothed belt is also connected with the main shaft gear. The main shaft of the motor is connected, and the connection mode of the toothed belt, the motor gear and the main shaft gear are meshing connections.

Another object of the present invention is to provide a three-dimensional knitting machine using a yarn carrier that can automatically increase or decrease the yarn.

Another technical solution of the present invention is a three-dimensional knitting machine that can automatically increase or decrease yarns, using the above-mentioned yarn carrier that can automatically increase or decrease yarns, including a knitting frame and a lead-off motor arranged on the knitting frame, Preformed chuck, chassis and multiple yarn carriers, the chassis is located at the lower part of the knitting frame, multiple yarn carriers are arranged and installed on the chassis, the preformed chuck is located directly above the yarn carrier, fixed on the weaving machine On the frame, the yarn drawn from the yarn carrier is controlled by the pre-forming chuck, and the weaving frame is equipped with a lead-off motor for controlling the pre-forming chuck.

The beneficial effect of the present invention is that one yarn carrier carries 4 yarn bobbins, and the design of the circular bottom plate can enable multiple strands of yarns to participate in weaving at the same time, and the weaving of variable cross-section prefabricated parts can obviously be doubled compared with traditional three-dimensional weaving equipment. Reduce the number of yarn carriers; when weaving variable-section prefabricated parts, the requirements for increasing or reducing yarn can be realized through the positive and negative rotation of the motor; when variable-section weaving, the yarn carrier controls the positive and negative rotation of the motor by wirelessly receiving the switchboard signal It can realize continuous increase and decrease of yarn actions for many times, avoiding manual participation in the process of variable cross-section knitting or deliberately changing the trajectory of some yarn carriers, so that the knitting efficiency is significantly improved.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of a three-dimensional knitting machine using a yarn carrier that can automatically increase or decrease yarns according to the present invention;

Fig. 2 is a structural schematic diagram of a yarn carrier that can automatically increase or decrease yarn in the present invention;

Fig. 3 is a device schematic diagram of a yarn fixing device of a yarn carrier that can automatically increase or decrease yarns in the present invention;

Fig. 4 is an enlarged schematic diagram of part of the structure of a yarn fixing device of a yarn carrier that can automatically increase or decrease yarns in the present invention

Fig. 5 is a structural schematic diagram of a rotating rod of a yarn carrier that can automatically increase or decrease yarn;

Fig. 6 is a structural schematic diagram of a yarn carrier of a yarn carrier that can automatically increase or decrease yarns in the present invention;

Fig. 7 is a side view of a yarn carrier of a yarn carrier capable of automatically increasing or decreasing yarns in the present invention;

Fig. 8 is a structural schematic diagram of a driving mechanism of a yarn carrier that can automatically increase or decrease yarn in the present invention.

In the figure, 1. Lead-off motor, 2. Preforming chuck, 3. Machine frame, 4. Yarn carrier, 5. Chassis, 6. Yarn increase and decrease mechanism, 7. Yarn loading mechanism, 8. Driving mechanism , 9. Yarn fixer bracket, 9-1. Horizontal pillar, 9-2. Vertical pillar, 9-3. Yarn guide ring, 9-4.L-shaped support arm long end, 9-5.L-shaped support The short arm of the arm, 10. pressing block, 10-1. top block, 11. pressing down movable block, 12. fixing ring, 12-1. pressing end, 12-2. locking end, 12-3 .Connecting arm, 13. Spring, 14. Ring, 15. Connecting rod, 16. Fixed block, 17. Yarn pushing handle, 18. Cutting knife, 19. Bottom surface, 20. One-way self-locking mechanism, 21. Yarn Tube lower block, 22. Yarn tube, 23. Arc support plate, 24. Beam lower shaft, 25. Yarn tube shaft, 26. Pulley A, 27. Support column, 28. Spring, 29. Beam, 30. Beam Upper shaft, 31 pulley B, 32. bobbin upper stopper, 33. support frame, 34. drive motor, 35. motor gear, 36. toothed belt, 37. main shaft gear, 38. main body of yarn carrier, 39. motor Main shaft, 40. rotating rod, 41. yarn fixing device.

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

A three-dimensional knitting machine that can automatically increase and decrease yarns, as shown in Figure 1, includes a knitting frame 3 and a lead-off motor 1 arranged on the knitting frame 3, a preforming chuck 2, a chassis 5 and a plurality of yarn carrying 4, the chassis 5 is located at the lower part of the knitting frame 3, and a plurality of yarn carriers 4 are arranged and installed on the chassis 5, and the preformed chuck 2 is located directly above the yarn carrier 4, and is fixed on the knitting frame 3 through a connecting rod , the yarn drawn out from the yarn carrier 4 is controlled by the preforming chuck 2, and the weaving frame 3 is equipped with a lead-off motor 1 for controlling the preforming chuck 2, and the preform formed along with the weaving It is gradually led away from the forming area by the chuck.

A yarn carrier 4 used in a three-dimensional knitting machine that can automatically increase or decrease yarns, as shown in Figure 2, includes a yarn carrier main body 38 and a yarn increasing and decreasing mechanism 6 arranged on the yarn carrying device main body 38, a yarn loading mechanism 7 and the drive mechanism 8, the increase and decrease yarn mechanism 6 is located at the top of the yarn carrier main body 38, the yarn carrier mechanism 7 is located at the middle part of the yarn carrier main body 38, and the driving mechanism 8 is located at the bottom of the yarn carrier main body 38.

The main body 38 of the yarn carrier is cylindrical as a whole, and a motor spindle 39 is arranged at the center thereof. The increasing and decreasing yarn mechanism 6 is arranged on the top of the main body 38 of the yarn carrying device. The increasing and decreasing yarn mechanism 6 includes four yarn fixing devices 41 and a rotating rod 40 , four yarn fixers 41 are evenly distributed around the motor shaft 39 , and the rotating rod 40 is connected to the motor shaft 39 .

The structure of the yarn fixer 41 is shown in Figure 3 and Figure 4, including the yarn fixer bracket 9 fixed on the top of the yarn carrier main body 38 and the yarn fixer ring 12 installed on the yarn fixer bracket 9, the yarn fixer bracket 9 It includes a vertical support 9-2 and a horizontal support 9-1 arranged perpendicular to each other, wherein the vertical support 9-2 is vertically fixed on the top of the main body 38 of the yarn carrier, and one end of the horizontal support 9-1 is connected to the vertical support 9-2 , the other end is fixedly connected with a yarn guide ring 9-3, the yarn guide ring 9-3 is provided with a yarn fixing ring 12, and the yarn fixing ring 12 is fixed together with the vertical pillar 9-2 through the connecting arm 12-3, The yarn fixing ring 12 includes a yarn-locking end 12-2 and a yarn-pressing end 12-1 that can be fastened together. The yarn-pressing end 12-1 is arranged in contact with the top block 10-1, and one end of the top block is connected to the yarn-pressing end 12-1. Contact, the other end is fixed on the compression block 10, the compression block 10 has a surface that is a slope, the slope is opposite to the fixed surface of the top block 10-1, and two sides of the compression block 10-1 are provided L-shaped support arm, the long end 9-4 of the L-shaped support arm is fixed with the vertical column 9-2, and a spring 13 is arranged between the short arm 9-5 of the L-shaped support arm and the compression block 10, two L-shaped The distance between the arms should be greater than the width of the jacking block 10 - 1 and smaller than the width of the pressing block 10 . A downward pressing movable block 11 is arranged above the slope of the pressing block 10, and the downward pressing movable block 11 passes through the transverse support 9-1 and can move up and down.

As shown in Figure 5, the rotating rod 40 includes a circular ring 14 and a connecting rod 15 connected together, the circular ring 14 is sleeved on the motor main shaft 39, and can rotate along with the rotation of the motor main shaft 39, the connecting rod 15 and the circular ring The center line is vertical; the end of the connecting rod 15 is fixedly connected with a fixed block 16, and it is vertically arranged with the connecting rod 15, and the yarn pushing handle 17 is installed under the fixed block 16 by bolts, parallel to the connecting rod 15. The end of the connecting rod 15 is fixedly connected with a cutting knife 18, and the working surface of the cutting knife 18 is opposite to the working surface of the yarn pushing grip 17.

In the middle of the main body 38 of the yarn carrying device, there are four open cavities with a fan-shaped cross-section and a certain height. Four yarn-carrying mechanisms 7 are respectively fixed in the bottom surface 19 of the cavities.

As shown in Figure 6, the yarn loading mechanism 7 includes a one-way self-locking mechanism 20, a yarn bobbin 22 and a tension control mechanism,

The one-way self-locking mechanism 20 is fixed on the bottom surface 19, and the two are fixedly connected by bolts. The yarn bobbin shaft is installed on the bottom surface 19, and the upper and lower sides of the yarn bobbin 22 are respectively provided with a bobbin lower stopper 21 and a bobbin upper stopper. 32. The yarn bobbin lower stopper 21 and the yarn bobbin upper stopper 32 are respectively welded to the upper and lower ends of the yarn bobbin, and the yarn bobbin lower stopper 21 is kept in contact with the one-way self-locking mechanism 20 .

The rear of the yarn bobbin 22 is provided with an arc-shaped support plate 23, the yarn bobbin 22 is passed on the yarn bobbin shaft 25, and the yarn bobbin 22 is located on the self-locking mechanism.

As shown in Figure 7, the arc support plate 23 is welded on the base plate 19, the arc support plate 23 is connected with the tension control mechanism, and the tension control mechanism includes a support frame 33 connected on the arc support plate 23 and two parallel set Crossbeams 29, one end of two crossbeams 29 are respectively fixed on the arc-shaped support plates 23 on both sides of the support frame 33.

The other end of two crossbeams 29 is installed with two springs 28 vertically downwards, is vertically provided with crossbeam upper axle 30 in the middle part of two crossbeams 29, and the two ends of crossbeam upper axle 30 pass two crossbeams 29 respectively, extend The two ends of the crossbeam are connected with two support columns 27, the support columns 27 are perpendicular to the crossbeam upper shaft 30, and the crossbeam upper shaft 30 can rotate in the crossbeam. The middle part of the beam upper shaft 30 is provided with a pulley B31, which adopts a glued and glued connection method;

The ends of the two support columns 27 are connected with the lower crossbeam shaft 24, and the middle part of the lower crossbeam shaft 24 is provided with a pulley A26. One end of the spring 28 is connected with the crossbeam 29, and the other end is connected with the lower crossbeam shaft 24. The two springs are located on the pulley A26 respectively. The two sides of the two sides are close to the position of the support column 27, and the connection mode of glue is used.

There is a through hole on the support frame 33 , and the position of the through hole is above the bobbin shaft 20 .

Yarn carrier drive mechanism 8, as shown in Figure 8, comprises drive motor 34 and the motor gear 35 that is connected with drive motor, and drive motor 34 is fixed on the bottom of yarn carrier main body 38 by bolt connection, motor gear 35 and toothed belt 36 Connect, the toothed belt is also connected with the main shaft gear 37, the main shaft gear 37 is connected with the motor main shaft 39, and the connection mode of the toothed belt 36 and the motor gear 35 and the main shaft gear 37 is meshing connection.

The working process of the present invention is: the purpose of automatically increasing and decreasing the yarn carrier is to realize the working requirement of automatically increasing and decreasing the yarn.

In the yarn-carrying mechanism 7, the yarn is drawn out from the yarn bobbin 22, passes around the pulley B 31 and the pulley A26 in sequence, and finally passes through the top of the yarn carrier main body 38 after passing through the pulley A 26, and passes through the increase and decrease yarn mechanism, and finally the yarn is sent to the weaving area above the yarn carrier to participate in weaving work. Here pulley B31 is equivalent to a fixed pulley, and pulley A26 is equivalent to a movable pulley. Through the joint action, the yarn carrier can control the yarn tension well, because whether the yarn tension can be stably controlled is an important index for evaluating a yarn carrier, and it is also a powerful condition for finally ensuring the weaving quality .

When the yarn tension is too large, because there are two springs 28 between the beam 29 on the support frame 33 and the lower shaft 24 of the beam, the tension pulling pulley A 26 has a tendency to move upwards, and the spring 28 can be compressed to achieve Pulley A 26 is adjusted upwards to achieve a reduction in yarn tension.

When the yarn tension is too small, similarly, because there are two springs 28 between the crossbeam 29 on the support frame 33 and the crossbeam lower shaft 24, at this moment, the two springs 28 can realize the pulling of the pulley due to the effect of their own restoring force. The function of A26 downward adjustment, so as to realize the increase of the tension of the yarn.

During the weaving process, the number of yarns involved in weaving is controlled by the increase and decrease yarn mechanism 6. When the yarn is transported upwards from the yarn loading mechanism 7 to the increase and decrease yarn mechanism 6, the yarn stays in the yarn fixing device and is worn Over-fixed yarn ring 12 and yarn fixer support 9 participate in the weaving process.

The following describes the working process of the automatic increase and decrease yarn carrier when reducing yarn and increasing yarn respectively.

(1) When the yarn needs to be reduced, the drive motor 34 of the automatic increase and decrease yarn carrier gets a forward signal, which can drive the motor gear 35 to rotate clockwise, thereby controlling the main shaft gear 37 through the transmission of the toothed belt 36 Rotate clockwise, because the selection lever is fixed on the main shaft, it will also rotate clockwise thereupon, thereby realizing the cutting motion of the cutting knife 18 for the yarn, and reducing the yarn participating in weaving successively by rotating. The yarn carrier involved in the present invention carries 4 yarn bobbins, therefore, the knitting yarns of each yarn carrier main body can be reduced from 4 to 3, 2, or 1.

(2) When it is necessary to increase the yarn, the drive motor 34 of the automatic increase and decrease yarn carrier obtains a reverse signal, which can drive the motor gear 35 to rotate counterclockwise, thereby controlling the main shaft gear 37 through the transmission of the toothed belt 36 Rotate counterclockwise, since the selection lever is fixed on the main shaft, it will also rotate counterclockwise. At this time, since the back of the cutting knife 18 is a smooth contact surface, the cutting knife 18 will be pressed down under the counterclockwise rotation. The pressing down movable block 11 arranged on the yarn fixer support 9, the pressing down movable block 11 will push the wedge-shaped structure of the pressing block 10, so that the pressing block 10 pushes the top block 10-1 to push the yarn pressing end 12-1 toward The yarn ring 12-2 in the yarn-fixing ring 12 moves to realize the requirement that the yarn-fixing ring 12 completes yarn locking, so that two yarns are fixed together. After the yarn fixing ring 12 completes the compression and self-locking, the compression block 10 returns to the initial position under the action of the spring 13, and waits for the next working cycle, so that one yarn becomes two yarns Weaving process. The yarn carrier 4 involved in the present invention includes several yarn carrier main bodies 38, and each yarn carrier main body 38 includes 4 yarn bobbins and 4 yarn fixing devices, therefore, the knitting yarn of each yarn carrier main body can be realized From 1 yarn, increase to 2, 3, 4 cases.

Claims (10)

1. it is a kind of automatically increase or decrease yarn take yarn device, it is characterised in that take yarn device master including taking yarn device main body (38) and being arranged on Increase and decrease yarn mechanism (6), Zai Sha mechanisms (7) and drive mechanism (8) on body (38), described increase and decrease yarn mechanism (6), which is located at, takes yarn The top of device main body (38), Zai Sha mechanisms (7) are located at the middle part for taking yarn device main body (38), and drive mechanism (8), which is located at, takes yarn device master The bottom of body (38).

2. it is according to claim 1 automatically increase or decrease yarn take yarn device, it is characterised in that described takes yarn device main body (38) Generally cylindrical, its center is provided with electric machine main shaft (39), and described increase and decrease yarn mechanism (6), which is arranged on, takes yarn device main body (38) top, described increase and decrease yarn mechanism (6) includes four solid yarn devices (41) and a swingle (40), and described four are solid Uniformly distribution is arranged on around electric machine main shaft (39) yarn device (41), and described swingle (40) connects with electric machine main shaft (39) Connect, the described middle part for taking yarn device main body (38), it is the fan-shaped opening cavity for having certain altitude there are four cross sections, described Four Ge Zai yarns mechanisms (7) are respectively fixed with the bottom surface (19) of cavity, described Zai Sha mechanisms (7) include unidirectional self-lock mechanism (20), tube (22) and tension control mechanism.

3. it is according to claim 2 automatically increase or decrease yarn take yarn device, it is characterised in that the knot of described solid yarn device (41) Structure includes being fixed on the solid yarn device support (9) for taking yarn device main body (38) top and the solid yarn ring on solid yarn device support (9) (12), described solid yarn device support (9) includes vertical support (9-2) and the lateral struts (9-1) being arranged in a mutually vertical manner, wherein, Described vertical support (9-2), which is perpendicularly fixed at, takes yarn device main body (38) top, described lateral struts (9-1) one end with it is vertical Pillar (9-2) is connected, and the other end, which is fixedly connected with below a yarn guiding ring (9-3), described yarn guiding ring (9-3), to be provided with admittedly Yarn ring (12), described solid yarn ring (12) is fixed together by linking arm (12-3) with vertical support (9-2), described solid yarn Ring (12) includes the lock yarn end (12-2) that can be snapped together and pressure yarn end (12-1).

4. it is according to claim 2 automatically increase or decrease yarn take yarn device, it is characterised in that described pressure yarn end (12-1) with Jacking block (10-1) contact is set, and described jacking block one end is contacted with pressure yarn end (12-1), and the other end is fixed on compact heap (10), It is inclined-plane that described compact heap (10), which has a face, and the inclined-plane and the stationary plane of jacking block (10-1) are oppositely arranged, in compact heap The both sides of (10-1) are provided with two L-type support arms, and the long end (9-4) of described L-type support arm is fixed with vertical column (9-2), L-type Spring (13) is provided between the galianconism (9-5) and compact heap (10) of support arm, the distance between two described L-type support arms answer big In jacking block (10-1) width, and less than the width of compact heap (10), the inclined-plane top of described compact heap (10) is provided with down Movable block (11) is pressed, described pushes movable block (11) through lateral struts (9-1), and can move up and down.

5. it is according to claim 2 automatically increase or decrease yarn take yarn device, it is characterised in that described swingle (40) includes The annulus (14) and connecting rod (15) linked together, described annulus (14) is sleeved on electric machine main shaft (39), can be with The rotation of electric machine main shaft (39) and rotate, described connecting rod (15) and the central axis of annulus；Described connecting rod (15) End be fixedly connected and be fixed with a fixed block (16), and it is vertically arranged with connecting rod (15), pushes away yarn handgrip (17) and passes through Bolt is arranged on the lower section of fixed block (16), parallel with connecting rod (15)；The end of described connecting rod (15) is fixedly connected with One cutoff tool (18), the working face of described cutoff tool (18) is opposite with the described working face for pushing away yarn handgrip (17) direction.

6. it is according to claim 2 automatically increase or decrease yarn take yarn device, it is characterised in that described unidirectional self-lock mechanism (20) it is fixed on bottom surface (19), is bolted to connection between the two, described tube axle is arranged on bottom surface (19), institute Block (21) and yarn under block (32), tube are respectively arranged with block under tube (21) and tube above and below the tube (22) stated Block (32) is respectively welded at block (21) under tube upper and lower ends, tube and keeps contacting with unidirectional self-lock mechanism (20) on cylinder, The rear of described tube (22) is provided with curved support plate (23), and described tube (22) is through on tube axle (25), described Tube (22) be located at self-locking mechanism on.

7. it is according to claim 2 automatically increase or decrease yarn take yarn device, it is characterised in that curved support plate (23) is welded on On described base plate (19), described curved support plate (23) is connected with tension control mechanism, described tension control mechanism bag Include the crossbeam (29) that the support frame (33) being connected on curved support plate (23) and two be arranged in parallel, two described crossbeams (29) one end is separately fixed on the curved support plate (23) on support frame (33) both sides.

8. it is according to claim 7 automatically increase or decrease yarn take yarn device, it is characterised in that two described crossbeams (29) The other end straight down two springs (28) are installed, be vertically installed with axle on crossbeam in the middle part of two crossbeams (29) (30), the two ends of axle (30) are each passed through two crossbeams (29) on described crossbeam, and the both ends stretched out after crossbeam are connected with two Individual support column (27), described support column (27) is vertical with axle on crossbeam (30), and axle (30) can in crossbeam on described crossbeam To rotate；Pulley B (31) is provided with described crossbeam in the middle part of axle (30), using gluing gluing connected mode；It is described The ends of two support columns (27) be connected with the middle part of crossbeam lower axle (24), described crossbeam lower axle (24) and be provided with pulley A (26), described spring (28) one end is connected with crossbeam (29), and the other end is connected in crossbeam lower axle (24), two spring difference Positioned at pulley A (26) both sides close to the position of support column (27), using gluing gluing connected mode；Described support frame (33) there is through hole on, and the position of the through hole is located at the tops of yarn tube axis (20).

9. it is according to claim 1 automatically increase or decrease yarn take yarn device, it is characterised in that described takes yarn device drive mechanism (8), including motor (34) and the motor gear (35) that is connected with motor, described motor (34) passes through bolt The bottom for taking yarn device main body (38) is fastened on, described motor gear (35) is connected with cingulum (36), and described cingulum is also It is connected with mainshaft gear (37), described mainshaft gear (37) is connected with electric machine main shaft (39), described cingulum (36) and motor The connected mode of gear (35) and mainshaft gear (37) is engagement connection.

10. a kind of three dimensional knitting machine for automatically increasing or decreasing yarn, used as in claim 1~9 caning of recording of any one from Dynamic increase and decrease yarn takes yarn device, it is characterised in that including weaving frames (3) and be arranged in weaving frames (3) deflect from motor (1), Preforming chuck (2), chassis (5) and it is multiple take yarn device (4), described chassis (5) is located at the bottom of weaving frames (3), described It is multiple take yarn devices (4) arrangement and be arranged on chassis (5), described preforming chuck (2) is located at the surface for taking yarn device (4), It is fixed in weaving frames (3), is controlled from the yarn for taking extraction in yarn device (4) by preforming chuck (2) by connecting rod It is provided with system, weaving frames (3) and deflects from motor (1), for controls preforming chuck (2).