阅读说明：本技术 一种针织机用可灵活跟换线色的辅助装置 (Auxiliary device capable of flexibly changing thread color for knitting machine ) 是由 李戈 于 2020-11-30 设计创作，主要内容包括：本发明涉及针织机相关领域,公开了一种针织机用可灵活跟换线色的辅助装置,包括主箱体,主箱体内设有控制块腔,控制块腔上侧连通设有三个等距设置且开口向上的启动杆腔,控制块腔上侧连通设有位于左侧启动杆腔左侧且开口向上的复位杆腔,控制块腔下侧连通设有三个等距设置的启动杆磁铁腔,本装置通过按下不同的启动杆按钮,即可使用不同颜色的线,同时按下两个启动杆按钮时可使用两种颜色交错的线,同理同时按下三个启动杆按钮可使用三种颜色交错的线,通过不同数量的磁性块拉动换速板使不同颜色的线恰好能错位相交,使其形成的图案更加美观,同时避免了无法灵活调节线色的问题,也大大的节约了工作人员的工作时间。(The invention relates to the relevant field of knitting machines, and discloses an auxiliary device capable of flexibly following and changing thread colors for a knitting machine, which comprises a main box body, wherein a control block cavity is arranged in the main box body, the upper side of the control block cavity is communicated with three starting rod cavities which are arranged at equal intervals and have upward openings, the upper side of the control block cavity is communicated with a reset rod cavity which is arranged at the left side of a left starting rod cavity and has an upward opening, and the lower side of the control block cavity is communicated with three starting rod magnet cavities which are arranged at equal intervals, the device can use threads with different colors by pressing different starting rod buttons, simultaneously can use two staggered threads when pressing two starting rod buttons, and can simultaneously use three staggered threads by pressing three starting rod buttons, and the threads with different colors can just be staggered and intersected by pulling a speed changing plate through different numbers of magnetic blocks, so that the formed patterns are more attractive, and simultaneously the problem that the thread colors cannot be flexibly adjusted is, the working time of workers is also greatly saved.)

1. The utility model provides a can be nimble with auxiliary device who trades line colour for knitting machine, includes the main tank body, its characterized in that: a control block cavity is arranged in the main box body, the upper side of the control block cavity is communicated with three equidistantly-arranged starting rod cavities with upward openings, the upper side of the control block cavity is communicated with a reset rod cavity which is positioned on the left side of the starting rod cavity and has an upward opening, the lower side of the control block cavity is communicated with three equidistantly-arranged starting rod magnet cavities, the right side of the starting rod magnet cavity is communicated with a magnet cavity, the upper side of the magnet cavity is communicated with a magnetic block cavity which is positioned on the right side of the starting rod magnet cavity, the lower side of the magnet cavity is provided with three equidistantly-arranged transposition cavities, the left side of the transposition cavity is communicated with a transposition shaft cavity, the left side of the transposition shaft cavity is communicated with a transposition plate cavity, the right side of the transposition cavity is provided with a downwardly-extending cam cavity, the lower side of the cam cavity is communicated with a downwardly-opening pull wire needle, the right side of the transmission wide gear cavity is communicated with a speed changing cavity, the left side of the transmission wide gear cavity is communicated with a speed changing shaft cavity, the left side of the speed changing shaft cavity is communicated with a speed changing plate cavity positioned at the upper side of the right transposition cavity, the inside of the control block cavity is connected with a control block in a sliding fit manner, a control block spring is fixedly connected between the left end surface of the control block and the left end wall of the control block cavity, a reset rod shaft cavity with an upward opening is arranged in the control block, the right side of the reset rod shaft cavity is provided with three starting rod shaft cavities which are equidistantly arranged and have upward openings, the lower side of the starting rod shaft cavity is communicated with a starting shaft limiting cavity with a downward opening and corresponding to the starting rod magnet cavity, a reset rod extending to the outside and extending to the inside of the control block cavity downwards is arranged in a sliding fit manner in the reset rod cavity, and a reset rod spring is fixedly connected between the lower end surface of the reset rod button and the upper end surface of the main box body, and a reset rod shaft extending backwards into the reset rod shaft cavity is fixedly connected in the reset rod.

2. The auxiliary device for knitting machine capable of flexibly changing thread color according to claim 1, wherein: the utility model discloses a start-up pole magnet, including start-up pole magnet chamber, start-up pole intracavity sliding fit connection be equipped with upwards extend to the external world and downwardly extending runs through control block chamber extremely start-up pole in the pole magnet chamber, the terminal fixed connection of start-up pole upside is equipped with the start-up pole button, start-up pole button lower extreme terminal surface with fixed connection is equipped with the start-up pole spring between the main tank body up end, start-up pole internal fixation is equipped with and extends to backward start-up pole intracavity and can get into start-up pole axle in the spacing intracavity of axle, the terminal fixed connection of start-up pole downside be equipped with can with the corresponding start-up pole magnet in magnet chamber, magnetic block intracavity sliding fit connection is equipped with the magnetic block, magnet intracavity sliding fit connection be equipped with can with.

3. The auxiliary device for knitting machine capable of flexibly changing thread color according to claim 1, wherein: the inner sliding fit connection of the speed changing shaft cavity is provided with a speed changing shaft which extends leftwards into the speed changing plate cavity and rightwards extends to penetrate through the transmission wide gear cavity to the speed changing cavity, the tail end of the left side of the speed changing shaft is connected with a speed changing plate which is connected with the speed changing plate cavity in a sliding fit manner, the left end surface of the speed changing plate and the left end wall of the speed changing plate cavity are fixedly connected with a speed changing plate spring, the speed changing plate and the magnetic block are fixedly connected with a magnetic block pull rope, the speed changing shaft is fixedly connected with a driven straight gear positioned in the transmission wide gear cavity, the speed changing shaft is fixedly connected with a low-speed driven gear positioned in the speed changing cavity, the speed changing shaft is fixedly connected with a medium-speed driven gear positioned on the right side of the low-speed driven gear, the speed changing shaft is fixedly connected with a high-speed driven gear positioned on the right side of the medium-speed driven gear, the inner fixed connection of the right end wall of the speed changing cavity is provided with a motor, the left end face of the motor is fixedly connected with a motor shaft which extends leftwards into the speed changing cavity, the motor shaft is fixedly connected with a low-speed transmission gear which can be meshed with the low-speed driven gear, the motor shaft is fixedly connected with a medium-speed transmission gear which is located on the right side of the low-speed transmission gear and can be meshed with the medium-speed driven gear, and the motor shaft is fixedly connected with a high-speed transmission gear which is located on the right side of the medium-speed transmission gear and can be meshed with the high-speed driven.

4. The auxiliary device for knitting machine capable of flexibly changing thread color according to claim 1, wherein: the transmission wide gear cavity left end wall internal rotation fit connection is equipped with extend right to in the transmission wide gear cavity and extend left and run through the right side shift cavity and well side shift cavity to left side the transmission gear axle in the shift cavity, the terminal fixed connection in transmission gear axle right side be equipped with the driven spur gear meshed main drive wide gear, the epaxial fixed connection of transmission gear is equipped with and is located the drive gear in the shift cavity, the epaxial sliding fit connection of shift axle is equipped with extend left to in the shift board cavity and extend right to the shift axle in the shift cavity, the terminal rotating fit connection in shift axle left side is equipped with the shift board that shift board cavity sliding fit is connected, fixed connection is equipped with the shift board spring between shift board left end face and the shift board cavity left end wall, fixed connection is equipped with the shift board stay cord between shift board and the magnet, and the tail end of the right side of the transposition shaft is fixedly connected with a transposition gear which can be meshed with the transmission gear.

5. The auxiliary device for knitting machine capable of flexibly changing thread color according to claim 1, wherein: transposition chamber right-hand member intra-wall internal rotation fit connection be equipped with extend to left transposition intracavity and extend to right the camshaft of cam intracavity, terminal fixed connection in camshaft left side be equipped with can with transposition gear engaged cam drive gear, the terminal fixed connection in camshaft right side is equipped with the cam, the needle intracavity sliding fit connection of acting as go-between is equipped with downwardly extending to the external world and upwards extends to the needle of acting as go-between of cam intracavity, the terminal fixed connection of needle upside of acting as go-between be equipped with can with the faller that acts as go-between of cam butt, the needle lower extreme face of acting as go-between with fixed connection is equipped with the needle spring that acts as go-between the cam chamber lower extreme wall.

Technical Field

The invention relates to the field related to knitting machines, in particular to an auxiliary device for a knitting machine, which can flexibly change thread colors.

Background

Knitting machine is a machine of knitting knitted fabric, after using knitting machine, generally can reuse special sewing machine to make up the knitting, make it form certain shape, but if need the line of many colours when making up now, then need many lines to twine each other then threading the needle and make up, so not only the winding process is loaded down with trivial details, can't change the line colour at will simultaneously, when needing the line of other colours, will change the line wheel, reinstallate, great increase the time of making up, reduce work efficiency.

Disclosure of Invention

The invention aims to provide an auxiliary device for a knitting machine, which can flexibly change thread colors, and can overcome the defects in the prior art, thereby improving the practicability of equipment.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to an auxiliary device capable of flexibly following and changing thread colors for a knitting machine, which comprises a main box body, wherein a control block cavity is arranged in the main box body, the upper side of the control block cavity is communicated with three starting rod cavities which are equidistantly arranged and have upward openings, the upper side of the control block cavity is communicated with a reset rod cavity which is positioned on the left side of the starting rod cavity on the left side and has an upward opening, the lower side of the control block cavity is communicated with three starting rod magnet cavities which are equidistantly arranged, the right side of the starting rod magnet cavity is communicated with a magnet cavity, the upper side of the magnet cavity is communicated with a magnetic block cavity which is positioned on the right side of the starting rod magnet cavity, the lower side of the magnet cavity is provided with three transposition cavities which are equidistantly arranged, the left side of the transposition cavity is communicated with a transposition shaft cavity, the left side of the transposition shaft cavity is communicated with a transposition plate cavity, the right side of the transposition, the right side of the right transposition cavity is provided with an upwardly extending transmission wide gear cavity, the right side of the transmission wide gear cavity is communicated with a speed changing cavity, the left side of the transmission wide gear cavity is communicated with a speed changing shaft cavity, the left side of the speed changing shaft cavity is communicated with a speed changing plate cavity positioned on the upper side of the right transposition cavity, a control block is arranged in the control block cavity in a sliding fit connection manner, a control block spring is fixedly connected between the left end surface of the control block and the left end wall of the control block cavity, a reset rod shaft cavity with an upward opening is arranged in the control block, the right side of the reset rod shaft cavity is provided with three equidistant starting rod shaft cavities with upward openings, the lower sides of the starting rod shaft cavities are communicated with a starting shaft limiting cavity with a downward opening and corresponding to the starting rod magnet cavity, and a reset rod which extends upwards to the outside and downwards into the control block cavity is arranged in, the tail end of the upper side of the reset rod is fixedly connected with a reset rod button, a reset rod spring is fixedly connected between the lower end face of the reset rod button and the upper end face of the main box body, and a reset rod shaft extending backwards into a reset rod shaft cavity is fixedly connected in the reset rod.

On the basis of the technical scheme, the starting rod cavity is connected in a sliding fit mode and is provided with a starting rod which extends upwards to the outside and extends downwards to penetrate through the control block cavity to the starting rod in the starting rod magnet cavity, the tail end of the upper side of the starting rod is fixedly connected with a starting rod button, a starting rod spring is fixedly connected between the lower end face of the starting rod button and the upper end face of the main box body, the starting rod is internally fixedly connected with a starting rod shaft which extends backwards into the starting rod cavity and can enter the starting rod cavity in the limiting cavity of the starting shaft, the tail end of the lower side of the starting rod is fixedly connected with a starting rod magnet which can correspond to the magnet cavity, a magnetic block is arranged in the magnetic block cavity in a sliding fit mode, and the magnet cavity is connected with a magnet which can correspond to the.

On the basis of the technical scheme, the inner sliding fit connection of the speed changing shaft cavity is provided with a speed changing plate which extends leftwards into the speed changing plate cavity and rightwards extends through the transmission wide gear cavity to the speed changing shaft in the speed changing cavity, the tail end of the left side of the speed changing shaft is connected with a speed changing plate which is connected with the speed changing plate cavity in a sliding fit manner, the left end surface of the speed changing plate is fixedly connected with the left end wall of the speed changing plate cavity and is provided with a speed changing plate spring, the speed changing plate is fixedly connected with the magnetic block and is provided with a magnetic block pull rope, the speed changing shaft is fixedly connected with a driven straight gear positioned in the transmission wide gear cavity, the speed changing shaft is fixedly connected with a low-speed driven gear positioned in the speed changing cavity, the speed changing shaft is fixedly connected with a medium-speed driven gear positioned on the right side of the low-speed driven gear, the speed changing shaft is fixedly connected with a high-speed driven gear positioned on the right side, the inner fixed connection of the right end wall of the speed changing cavity is provided with a motor, the left end face of the motor is fixedly connected with a motor shaft which extends leftwards into the speed changing cavity, the motor shaft is fixedly connected with a low-speed transmission gear which can be meshed with the low-speed driven gear, the motor shaft is fixedly connected with a medium-speed transmission gear which is located on the right side of the low-speed transmission gear and can be meshed with the medium-speed driven gear, and the motor shaft is fixedly connected with a high-speed transmission gear which is located on the right side of the medium-speed transmission gear and can be meshed with the high-speed driven.

On the basis of the technical scheme, the transmission wide gear cavity left end wall is connected in rotation fit and is equipped with and extends to right in the transmission wide gear cavity and extends to run through the right side left, transposition cavity and well side transposition cavity to left side the transmission gear shaft in the transposition cavity, the terminal fixed connection in transmission gear shaft right side be equipped with the main drive wide gear of driven straight-tooth gear meshing, the epaxial fixed connection of transmission gear is equipped with and is located the transmission gear in the transposition cavity, transposition shaft intracavity slide fit connect be equipped with extend to left in the transposition plate cavity and extend to right the transposition axle in the transposition cavity, the terminal rotation fit connection in transposition axle left side be equipped with the transposition board of transposition board cavity slide fit connection, transposition board left end face with fixed connection is equipped with the transposition board spring between the transposition board cavity left end wall, a shifting plate pull rope is fixedly connected between the shifting plate and the magnet, and a shifting gear capable of being meshed with the transmission gear is fixedly connected to the tail end of the right side of the shifting shaft.

On the basis of the technical scheme, the inner rotation fit connection of the right end wall of the transposition cavity is provided with a cam shaft which extends leftwards into the transposition cavity and rightwards into the cam cavity, the tail end of the left side of the cam shaft is fixedly connected with a cam transmission gear which can be meshed with the transposition gear, the tail end of the right side of the cam shaft is fixedly connected with a cam, the inner sliding fit connection of the stay wire needle cavity is provided with a stay wire needle which extends downwards to the outside and upwards extends to the cam cavity, the tail end of the upper side of the stay wire needle is fixedly connected with a stay wire needle plate which can be abutted to the cam, and the lower end face of the stay wire needle plate is fixedly connected with a stay wire needle spring between.

The invention has the beneficial effects that: this device can use the line of different colours through pressing different actuating lever buttons, can use the crisscross line of two kinds of colours when pressing two actuating lever buttons simultaneously, can use the crisscross line of three kinds of colours simultaneously according to the three actuating lever buttons of pressing simultaneously of the same reason, the line that makes different colours through the magnetic block pulling speed changing plate of different quantity can the dislocation intersect just, the pattern that makes its formation is more pleasing to the eye, the problem of unable nimble line colour of adjusting has been avoided simultaneously, also great saving staff's operating time.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of the overall structure of an auxiliary device for a knitting machine of the present invention, which can flexibly change thread colors.

Fig. 2 is an enlarged schematic view of a structure at a in fig. 1.

Fig. 3 is an enlarged schematic view of the structure at B in fig. 1.

Fig. 4 is an enlarged schematic view of the structure at C in fig. 1.

Detailed Description

The invention will now be described in detail with reference to fig. 1-4, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The auxiliary device for flexibly following and changing thread colors for knitting machines, which is described in conjunction with the attached drawings 1-4, comprises a main box body 10, a control block cavity 19 is arranged in the main box body 10, the upper side of the control block cavity 19 is communicated with three starting rod cavities 26 which are equidistantly arranged and have upward openings, the upper side of the control block cavity 19 is communicated with a reset rod cavity 21 which is positioned on the left side of the starting rod cavity 26 and has an upward opening, the lower side of the control block cavity 19 is communicated with three starting rod magnet cavities 35 which are equidistantly arranged, the right side of the starting rod magnet cavity 35 is communicated with a magnet cavity 42, the upper side of the magnet cavity 42 is communicated with a magnetic block cavity 41 which is positioned on the right side of the starting rod magnet cavity 35, the lower side of the magnet cavity 42 is provided with three transposition cavities 67 which are equidistantly arranged, the left side of the transposition cavity 67 is communicated with a transposition shaft cavity 61, the right side of the transposition cavity 67 is provided with a cam cavity 65 extending downwards, the lower side of the cam cavity 65 is communicated with a pull wire needle cavity 12 with a downward opening, the right side of the transposition cavity 67 is provided with a transmission wide gear cavity 46 extending upwards, the right side of the transmission wide gear cavity 46 is communicated with a speed changing cavity 55, the left side of the transmission wide gear cavity 46 is communicated with a speed changing shaft cavity 45, the left side of the speed changing shaft cavity 45 is communicated with a speed changing plate cavity 32 positioned at the right side of the transposition cavity 67, the control block cavity 19 is internally provided with a control block 17 in a sliding fit connection manner, a control block spring 18 is fixedly connected between the left end surface of the control block 17 and the left end wall of the control block cavity 19, a reset rod shaft cavity 25 with an upward opening is arranged in the control block 17, the right side of the reset rod shaft cavity 25 is provided with three starting rod shaft cavities 38 with equal intervals and an upward opening, the lower sides of the starting rod shaft cavities 38 are communicated with a starting shaft The reset rod cavity 21 is internally provided with a reset rod 22 which extends to the outside and downwardly extends to the control block cavity 19 in a sliding fit manner, the tail end of the upper side of the reset rod 22 is fixedly connected with a reset rod button 23, a reset rod spring 24 is fixedly connected between the lower end surface of the reset rod button 23 and the upper end surface of the main box body 10, and the reset rod 22 is internally fixedly connected with a reset rod shaft 20 which extends backwards to the reset rod shaft cavity 25.

In addition, in one embodiment, the actuating rod cavity 26 is slidably engaged with the actuating rod 29 extending upwardly to the outside and downwardly through the control block cavity 19 to the actuating rod magnet cavity 35, the upper end of the starting lever 29 is fixedly connected with a starting lever button 27, a starting lever spring 28 is fixedly connected between the lower end surface of the starting lever button 27 and the upper end surface of the main box 10, the starting rod 29 is internally and fixedly connected with a starting rod shaft 30 which extends backwards into the starting rod shaft cavity 38 and can enter into the starting shaft limiting cavity 37, the lower end of the actuating rod 29 is fixedly connected with an actuating rod magnet 36 which can correspond to the magnet cavity 42, the magnetic block 40 is arranged in the magnetic block cavity 41 in a sliding fit connection mode, and the magnet 43 which can correspond to the magnetic block cavity 41 is arranged in the magnet cavity 42 in a sliding fit connection mode.

In addition, in an embodiment, the inner sliding fit connection of the speed changing shaft cavity 45 is provided with a speed changing shaft 48 which extends leftwards into the speed changing plate cavity 32 and rightwards to penetrate through the transmission wide gear cavity 46 to the speed changing cavity 55, the end of the left side of the speed changing shaft 48 is rotatably matched and connected with a speed changing plate 33 which is connected with the speed changing plate cavity 32 in a sliding fit manner, a speed changing plate spring 31 is fixedly connected between the left end surface of the speed changing plate 33 and the left end wall of the speed changing plate cavity 32, a magnetic block pull rope 39 is fixedly connected between the speed changing plate 33 and the magnetic block 40, a driven spur gear 47 positioned in the transmission wide gear cavity 46 is fixedly connected on the speed changing shaft 48, a low-speed driven gear 49 positioned in the speed changing cavity 55 is fixedly connected on the speed changing shaft 48, a medium-speed driven gear 50 positioned on the right side of the low-speed driven gear 49 is fixedly connected on the speed changing shaft 48, the speed changing device is characterized in that a high-speed driven gear 51 located on the right side of the medium-speed driven gear 50 is fixedly connected to the speed changing shaft 48, a motor 34 is fixedly connected to the inner side of the right end wall of the speed changing cavity 55, a motor shaft 54 extending leftwards into the speed changing cavity 55 is fixedly connected to the left end face of the motor 34, a low-speed transmission gear 56 capable of being meshed with the low-speed driven gear 49 is fixedly connected to the motor shaft 54, a medium-speed transmission gear 53 located on the right side of the low-speed transmission gear 56 and capable of being meshed with the medium-speed driven gear 50 is fixedly connected to the motor shaft 54, and a high-speed transmission gear 52 located on the right side of the medium-speed transmission gear 53 and capable of being meshed with the.

In addition, in an embodiment, the end wall of the left end of the transmission wide gear cavity 46 is connected in a rotationally matched manner and is provided with a transmission gear shaft 15 which extends rightwards into the transmission wide gear cavity 46 and leftwards into the right side, the transposition cavity 67 and the middle side are connected, the transmission gear shaft 15 in the transposition cavity 67 is arranged in the left side, the end of the right side of the transmission gear shaft 15 is fixedly connected with a main transmission wide gear 44 meshed with the driven spur gear 47, the transmission gear shaft 15 is fixedly connected with a transmission gear 16 positioned in the transposition cavity 67, the transposition shaft 61 is connected in a rotationally matched manner and is provided with a transposition shaft 62 which extends leftwards into the transposition plate cavity 58 and rightwards into the transposition cavity 67, the end of the left side of the transposition shaft 62 is connected in a rotationally matched manner and is provided with a transposition plate 60 connected in a sliding fit manner with the transposition plate cavity 58, the left end surface of the transposition plate 60 is fixedly connected with the left end wall of the transposition plate cavity, a shifting plate pull rope 57 is fixedly connected between the shifting plate 60 and the magnet 43, and a shifting gear 63 capable of being meshed with the transmission gear 16 is fixedly connected to the right tail end of the shifting shaft 62.

In addition, in one embodiment, a cam shaft 66 extending leftwards into the transposition cavity 67 and rightwards into the cam cavity 65 is arranged in the right end wall of the transposition cavity 67 in a rotationally matched manner, a cam transmission gear 68 capable of being meshed with the transposition gear 63 is fixedly connected to the left end of the cam shaft 66, a cam 64 is fixedly connected to the right end of the cam shaft 66, a wire drawing needle 11 extending downwards to the outside and upwards extending into the cam cavity 65 is arranged in the wire drawing needle cavity 12 in a rotationally matched manner, a wire drawing needle plate 14 capable of abutting against the cam 64 is fixedly connected to the upper end of the wire drawing needle 11, and a wire drawing needle spring 13 is fixedly connected between the lower end face of the wire drawing needle plate 14 and the lower end wall of the cam cavity 65.

The fixing and connecting method in this embodiment includes, but is not limited to, bolting, welding, and the like.

As shown in fig. 1 to 4, in the initial state of the apparatus of the present invention, the transposition gear 63 is not engaged with both the cam drive gear 68 and the drive gear 16, the high-speed driven gear 51 is engaged with the high-speed drive gear 52, the medium-speed driven gear 50 is not engaged with the medium-speed drive gear 53, and the low-speed driven gear 49 is not engaged with the low-speed drive gear 56;

sequence of mechanical actions of the whole device:

when the starting motor 34 is started, the motor 34 rotates to drive the high-speed transmission gear 52 to rotate through the motor shaft 54, the high-speed transmission gear 52 rotates to drive the speed change shaft 48 to rotate through the high-speed driven gear 51, the speed change shaft 48 rotates to drive the main transmission wide gear 44 to rotate through the driven spur gear 47, the main transmission wide gear 44 rotates to drive the transmission gear 16 to rotate through the transmission gear shaft 15, when one of the starting rod buttons 27 is pressed, the starting rod button 27 overcomes the thrust of the starting rod spring 28 to drive the starting rod shaft 30 to move downwards through the starting rod 29, the starting rod shaft 30 moves downwards under the limit of the starting rod shaft cavity 38, the control block 17 overcomes the thrust of the control block spring 18 to move leftwards until the starting rod shaft 30 enters the starting shaft limit cavity 37, and at the moment, the starting rod magnet 36 corresponds to the magnet cavity 42, the starting rod magnet 36 adsorbs the magnet 43 to move, the magnet 43 moves leftwards, the corresponding shifting plate 60 is pulled by the shifting plate pull rope 57 to overcome the thrust of the shifting plate spring 59, so that the shifting shaft 62 drives the shifting gear 63 to be meshed with the cam transmission gear 68 and the transmission gear 16, the transmission gear 16 rotates to drive the cam transmission gear 68 to rotate through the shifting gear 63, the cam transmission gear 68 rotates to drive the cam 64 to rotate through the cam shaft 66, so that the corresponding wire pulling needle plate 14 drives the wire pulling needle 11 to reciprocate by overcoming the thrust of the wire pulling needle spring 13, and at the moment, the single magnet 43 and the magnetic block 40 which cannot be adsorbed pull the shifting plate 33 through the magnetic block pull rope 39;

when two kinds of thread are needed, any two starting rod buttons 27 are pressed down to enable the corresponding two thread drawing needles 11 to reciprocate, the two magnets 43 adsorb the magnetic blocks 40, the speed changing plate 33 is pulled by the magnetic block pull ropes 39 to move leftwards by overcoming the thrust of the speed changing plate spring 31, so that the speed changing shaft 48 drives the middle-speed driven gear 50 to move leftwards to be just meshed with the middle-speed transmission gear 53, the high-speed driven gear 51 is disengaged from the high-speed transmission gear 52, the reciprocating speed of the thread drawing needles 11 is reduced at the moment, and the thread drawing needles 11 on two sides can be just sewn in a staggered mode;

when three threads are needed, the three starting rod buttons 27 are pressed down to enable the three thread pulling needles 11 to reciprocate, at the moment, the three magnets 43 adsorb the magnetic blocks 40, the speed changing plate 33 is pulled by the magnetic block pulling ropes 39 to move leftwards by overcoming the thrust of the speed changing plate spring 31, so that the speed changing shaft 48 drives the low-speed driven gear 49 to move leftwards to be just meshed with the low-speed transmission gear 56, the medium-speed driven gear 50 is separated from the front and the back to be meshed with the medium-speed transmission gear 53, and at the moment, the reciprocating speed of the thread pulling needles 11 is continuously reduced, so that the three threads can be just sewn in a staggered mode;

when the stop is needed, the reset rod button 23 is pressed, the reset rod 22 and the reset rod shaft 20 move downwards through the reset rod button 23 against the pushing force of the reset rod spring 24, so that the control block 17 moves leftwards until the starting rod 29 is reset under the action of the elastic force of the starting rod spring 28.

The invention has the beneficial effects that: this device can use the line of different colours through pressing different actuating lever buttons, can use the crisscross line of two kinds of colours when pressing two actuating lever buttons simultaneously, can use the crisscross line of three kinds of colours simultaneously according to the three actuating lever buttons of pressing simultaneously of the same reason, the line that makes different colours through the magnetic block pulling speed changing plate of different quantity can the dislocation intersect just, the pattern that makes its formation is more pleasing to the eye, the problem of unable nimble line colour of adjusting has been avoided simultaneously, also great saving staff's operating time.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.