CN212426351U

CN212426351U - Knitting triangle system in flat knitting machine

Info

Publication number: CN212426351U
Application number: CN202021147326.4U
Authority: CN
Inventors: 孙荣飞
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-19
Filing date: 2020-06-19
Publication date: 2021-01-29
Anticipated expiration: 2030-06-19

Abstract

The utility model discloses a knitting triangle system in a flat knitting machine, which comprises a triangle panel, wherein the triangle panel is divided into a knitting area and a needle selecting area; a knitting needle-turning cam is arranged at the center of the knitting area, a knitting track and a needle-turning track are arranged on the knitting needle-turning cam, and a switching cam is arranged at the boundary of two sides of the two tracks; the stitch cam, the sinker cam and the upper protection cam are sequentially arranged on two sides of the knitting needle-turning cam, the sinker cam is linked with the stitch cam, and the stitch cam are movably arranged on a cam panel; a reset triangle is arranged below the upper hill protector, and a reset driving component for driving the reset triangle is arranged behind the triangle panel; two needle raising triangles and two needle connecting triangles are symmetrically arranged in the middle of the needle selecting area. The utility model switches the knitting needle to enter the knitting needle-feeding track or the needle-turning needle-feeding track through the rotary switching triangle, and the stitch triangle and the letter triangle are driven by the same driving mechanism; the reset triangle automatically moves up and down to adjust the height of the back stitch according to the requirements of different fabrics.

Description

Knitting triangle system in flat knitting machine

Technical Field

The utility model belongs to the technical field of knitting machinery, in particular to weave triangular system among flat-bed machine.

Background

A cam system of the flat knitting machine is arranged in a machine head and moves left and right along with the machine head. The machine head comprises a cam which is divided into a needle selection mother board and a triangular panel, and the cam assists the needle board to finish various knitting forms (namely knitting, needle turning, eye hanging and needle receiving) under the operation of the machine head. The main cams include a needle selecting and pushing cam, a needle protecting cam, a middle cam guide block, a needle turning guide block, a stitch cam, a sinker cam and the like. Wherein, the middle guide block provides a needle moving track for the lower needle foot of the needle jack when in normal knitting; when the needle is turned, the needle turning guide block provides a needle moving track for the upper needle foot of the needle jack. The middle protective mountain is used for returning the knitting needle in the knitting process; the sinker cam can control the sinker to swing back and forth so as to press the fabric, and the stitch cam is used for adjusting the weaving density of the fabric and meeting the density requirements of various patterns.

In order to realize the knitting, the needle sending and the needle receiving and releasing molding of various double-sided fabrics, a multi-needle bed structure is adopted on a flat knitting machine, the flat knitting machine has four or more needle beds, each needle bed is provided with a row of knitting needles, and thus four or more rows of knitting needles participate in the knitting. Each row of knitting needles needs a separate mountain plate, the area of the mountain plate corresponding to the upper needle bed is limited in consideration of the capacity of a machine head, the structure of the cam device arranged on the cam device is more compact relative to the lower needle bed, and the mountain plate corresponding to the upper needle bed has to be complete in function in order to ensure the diversification of the needle outlet of the upper needle bed.

Disclosure of Invention

The utility model aims at providing a multiple functional, compact structure is applicable to the triangle system of weaving in the flat-bed machine that the knitting needle of needle bed removed in the guide.

Therefore, the technical scheme of the utility model is that: a knitting cam system in a flat knitting machine comprises a cam panel, wherein the cam panel is divided into a knitting area and a needle selecting area;

the method is characterized in that: a knitting needle-turning cam is arranged at the center of the knitting area, a knitting track and a needle-turning track are arranged on the knitting needle-turning cam, a switching cam is arranged at a boundary between the two sides of the knitting track and the needle-turning track, and a first driving assembly for driving the switching cam to rotate is mounted behind a cam panel; the stitch cam, the sinker cam and the upper protecting mountain are sequentially arranged on two sides of the knitting needle-turning cam, the sinker cam is linked with the stitch cam, the stitch cam and the stitch cam are movably mounted on a cam panel, and a second driving assembly for driving the stitch cam and the sinker cam is mounted behind the cam panel; a reset triangle is arranged below the upper hill protector, and a reset driving component for driving the reset triangle is arranged behind the triangle panel; two needle raising triangles and two needle connecting triangles are symmetrically arranged in the middle of the needle selecting area, a middle protective mountain is arranged above the needle raising triangles and the needle connecting triangles, an ejector pin triangle is arranged below the needle raising triangles, and lower protective mountains are arranged on two sides of the ejector pin triangle.

Preferably, the knitting needle-reversing cam is bilaterally symmetrical along the central line, trumpet-shaped track inlets are formed in two sides of the knitting needle-reversing cam, and two tracks, namely a knitting track and a needle-reversing track, are arranged above the track inlets; the switching triangle is arranged at the boundary of the knitting track and the needle turning track, the first driving assembly drives the switching triangle to rotate, and the track inlet is communicated with the knitting track or the needle turning track.

Preferably, the first driving assembly comprises a rotating motor, a pull rod and a clamping block, the rotating motor is provided with a first cam, the edge of the local part of the first cam is wavy in the axial direction, the pull rod is provided with two first bearings, and the wavy edge of the first cam is arranged between the two first bearings and is matched with the first bearings to work; the left side and the right side of the pull rod are respectively provided with a slotted hole, the switching triangle penetrates through the triangular panel and is installed on the clamping block, and the clamping block is arranged in the slotted holes on the two sides of the pull rod through the second bearing; the rotating motor drives the pull rod to reciprocate through the first cam, and the switching triangle is driven to rotate.

Preferably, the clamping block is divided into a left clamping block and a right clamping block which are oppositely arranged, and a plate spring is arranged between the left clamping block and the right clamping block; the end part of the clamping block is provided with a second bearing, the second bearing is arranged in a groove hole of the pull rod, the middle of the clamping block is provided with a mounting hole, and the switching triangle is fixed in the mounting hole.

Preferably, the letter gram triangle is equipped with a boss towards one side of mesh triangle, and the side of mesh triangle is equipped with a recess, and the boss of letter gram triangle is arranged in the recess of mesh triangle, and the letter gram triangle passes through the cooperation of boss and recess and links with the mesh triangle.

Preferably, the second driving assembly comprises a stitch motor, a stitch cam and a stitch connecting piece, the stitch cam passes through a stitch chute of the triangular panel and is installed on the stitch connecting piece, the stitch cam is installed on the stitch motor, the stitch connecting piece is tightly attached to a contour surface of the stitch cam through a third bearing, and the stitch motor drives the stitch cam and the letter cam through the stitch cam.

Preferably, the stitch connecting piece comprises a stitch oscillating bar, a stitch connecting block and a stitch guiding block, the stitch guiding block is arranged in a stitch sliding groove of the triangular panel, one side of the stitch guiding block is connected with a stitch triangle, and the other side of the stitch guiding block is provided with the stitch connecting block; one end of the mesh oscillating rod is rotatably installed on the mesh connecting block, the other end of the mesh oscillating rod is provided with a first hook, a second hook is arranged on the mesh connecting block, third bearings are respectively arranged on the mesh oscillating rod and the mesh connecting block, and a first tension spring is arranged on the first hook of the mesh oscillating rod and the second hook of the mesh connecting block.

Preferably, the letter gram triangle is installed on letter gram triangle slider, and letter gram triangle slider is arranged in the letter gram triangle spout of triangle panel, is equipped with the second extension spring between letter gram triangle slider and the triangle panel.

Preferably, the reset triangle is fixed with the reset triangle cover plate and movably arranged in the vertical groove of the triangle panel; the reset driving assembly comprises a reset motor and a reset connecting rod, a gear is arranged on the reset motor, a rack meshed with the gear is arranged on the reset connecting rod, and the reset motor drives the reset connecting rod through the rack; the reset connecting rod is also provided with an inclined movable groove, the reset triangular cover plate is provided with a reset bearing, the reset bearing is arranged in the inclined movable groove of the reset connecting rod, and the reset connecting rod drives the reset triangle to move up and down.

The utility model discloses the well mountain guide block of weaving usefulness that separately sets up originally and the needle turning guide block that turns over the needle usefulness have merged into one and have woven the needle turning triangle, then switch through switching the triangle and weave the track and turn over the needle track, guide knitting needle completion weave and turn over the needle work. The utility model discloses a first cam on the rotation motor drives the pull rod, and first cam lower part edge is wavy, and arranges in the middle of two first bearings of pull rod to with first bearing cooperation work. The wavy edge can drive the pull rod to move back and forth along with the rotation of the cam, so that the clamping blocks and the switching triangles fixed on the clamping blocks are driven to rotate, and the switching work of the needle track is completed.

The utility model discloses separately independently driven letter gram triangle and degree mesh triangle linkage originally, by same mechanism drive, not only can satisfy the work demand of degree mesh triangle and letter gram triangle, still reduced the cost of aircraft nose. When the stitch motor drives the stitch cam to rotate, the stitch oscillating bar and the stitch connecting block move along the contour surface of the stitch cam through the bearing, and the distance between each point on the contour surface of the stitch cam and the axis changes, so that the stitch cam is driven to move back and forth. When the stitch cam moves outwards, the inner side edge of the stitch cam groove touches the boss of the letter-gram cam, so that the letter-gram cam is driven to move outwards; when the stitch cam resets inwards, the sinker cam moves inwards under the action of the second tension spring and clings to one side of the groove of the stitch cam, and the stitch cam can still continue to move inwards until the second tension spring resets. If the second tension spring fails in the moving process of the letter-gram triangle, the stitch triangle can drive the letter-gram triangle to reset inwards.

The utility model discloses during operation, reset motor drives the connecting rod side-to-side movement that resets through the meshing of gear and rack, and the slope movable groove of connecting rod that resets drives the triangle that resets for the triangle that resets is along the vertical groove up-and-down motion of triangle panel. The reset triangle can automatically move on the inclined movable groove according to the requirements of the cloth piece, and the height of the reset position of the knitting needle is continuously adjusted, so that more knitting requirements are met.

The switching cam of the utility model can rotate, and the knitting needle is switched to enter the knitting needle-feeding track or the needle-turning needle-feeding track through rotation; the stitch cam and the letter cam are driven by the same driving mechanism and can slide up and down along a chute of the cam panel, the stitch cam adjusts the density of the fabric, and the letter cam controls the action of the sinker; the reset triangle is driven by the reset driving component and automatically moves up and down to adjust the height of the back stitch according to the requirements of different fabrics; the utility model discloses a rise needle triangle, meet needle triangle can be according to weaving the requirement, and selective entering work position or withdraw from the work position.

Drawings

The following detailed description is made with reference to the accompanying drawings and embodiments of the present invention

FIG. 1 is a schematic view of the knitting triangle structure of the present invention;

FIG. 2 shows the knitting path of the present invention;

FIG. 3 is the needle-turning track of the present invention;

FIG. 4 is the needle-joining path of the present invention;

FIG. 5 is an exploded view of a first drive assembly;

FIG. 6 is a schematic structural diagram of a first driving assembly;

FIG. 7 is a schematic diagram of the internal structure of the first driving assembly;

FIG. 8 is a schematic structural view of a first cam;

FIG. 9 is a state diagram of the switching cam at the knitting position;

FIG. 10 is a schematic view of the position of the pull rod when the switching cam is in the knitting position;

FIG. 11 is a state diagram of the switching cam in the stitch-flipping position;

FIG. 12 is a schematic view of the position of the pull rod when the switching cam is in the stitch-flipping position;

FIG. 13 is an exploded view of a second drive assembly;

FIG. 14 is a schematic structural diagram of a second driving assembly;

FIG. 15 is a schematic diagram of the internal structure of the second driving assembly;

FIG. 16 is a view showing a driving structure of a sinker cam and a stitch cam;

FIG. 17 is a view showing a structure of a combination of a letter triangle and a stitch triangle;

fig. 18 is an exploded view of a part of the reset actuator assembly.

Labeled as: a triangular mother plate 1 and a needle selection mother plate 2;

the needle-turning cam 3, the track inlet 31, the knitting track 32, the needle-turning track 33, the rotating motor 34, the pull rod 35, the slot 351, the clamping block 36, the motor frame 37, the guide base 38, the first cam 39, the wavy edge 391, the pull rod cover plate 310, the first bearing 311, the plate spring 312 and the second bearing 313;

a switching cam 4 and an installation part 41;

the mesh cam comprises a mesh triangle 5, a groove 51, a mesh motor 52, a mesh cam 53, a mesh swing rod 54, a first hook 541, a mesh connecting block 55, a second hook 551, a mesh guiding block 56, a mesh sliding groove 57, a third bearing 58 and a first tension spring 59;

the letter-gram triangle 6, the boss 61, the letter-gram triangle sliding block 62, the spring rubber seat 63 and the second tension spring 64;

climbing a hill 7;

the device comprises a reset triangle 8, a reset triangle cover plate 81, a reset motor 82, a reset connecting rod 83, an inclined movable groove 831, an induction block 832, a gear 84, a connecting rod seat 85, a connecting rod rack 86, a reset bearing 87, an inductor 88 and an inductor seat 89;

a needle raising triangle 9, a needle connecting triangle 10, a middle protective mountain 11, a lower protective mountain 12 and an ejector pin triangle 13.

Detailed Description

See the drawings. The knitting cam system of the embodiment comprises a cam panel, wherein the cam panel is divided into a cam mother board 1 and a needle selecting mother board 2, the cam mother board 1 is fixedly connected with the needle selecting mother board 2, and the position of the cam mother board 1 is higher than that of the needle selecting mother board 2. The triangular mother board 1 is provided with a knitting needle-turning triangle 3, a switching triangle 4, a stitch triangle 5, a letter triangle 6, an upper protective hill 7 and a reset triangle 8 to form a knitting area; the needle selection mother board 2 is provided with a needle raising cam 9, a needle connecting cam 10, a middle protecting cam 11, a lower protecting cam 12 and an ejector cam 13, and a needle selection area is formed.

The whole knitting needle-turning cam 3 is bilaterally symmetrical along a central line, the two sides of the knitting needle-turning cam 3 are provided with horn-shaped track inlets 31, two tracks, namely a knitting track 32 and a needle-turning track 33, are arranged above the track inlets, the needle-turning track 33 is higher than the knitting track 32, but the track inlets of the two tracks are the same; a switching triangle 4 is arranged at the boundary of the knitting track 32 and the needle turning track 33; the two switching cams 4 are symmetrically arranged on the left side and the right side of the knitting needle-turning cam 3; the rear end of the switching triangle 4 is provided with a mounting part 41, and the mounting part 41 penetrates through the triangle motherboard 1; still including driving and switching 4 pivoted first drive assembly of triangle, it has weaving position and two kinds of states of needle position to switch 4 rotation in-process: in the knitting position, the switching triangle 4 is blocked on the needle turning track 33, and the track inlet 31 is communicated with the knitting track 32; in the needle reversing position, the switching cam 4 is stopped on the knitting track 32, and the track inlet 31 is communicated with the needle reversing track 33.

The first driving assembly comprises a rotating motor 34, a pull rod 35 and a clamping block 36, the rotating motor 34 is mounted on the back of the triangular mother board 1 through a motor frame 37, and a guide base 38 with a sliding groove is further mounted on the triangular mother board 1; a first cam 39 is mounted on a motor shaft of the rotating motor 34, the first cam 39 is vertically arranged, and the lower edge is a wavy edge 391, namely, a wavy structure which is fluctuated in the axial direction; the main body of the pull rod 35 is strip-shaped and is arranged in the sliding groove of the guide base 38, the pull rod is limited in the sliding groove of the guide base 38 by the pull rod cover plate 310, and the pull rod 35 can move back and forth in the sliding groove of the guide base 38; two first bearings 311 are arranged above the pull rod 35, the two first bearings 311 are positioned on two sides of the wavy edge 391 of the first cam and can move along the wavy edge 391, and when the first cam 39 rotates, the wavy edge 391 can drive the pull rod 35 through the first bearings 311; the left and right sides of the pull rod 35 are respectively provided with a slot hole 351.

The clamping block 36 is divided into a left clamping block and a right clamping block which are oppositely arranged, and a plate spring 312 is arranged between the left clamping block and the right clamping block, so that the switching triangle 4 can be tightly attached to one side when in a knitting position or a needle turning position, the swinging is prevented, the gap is eliminated, and the needle moving is stable. The opposite ends of the two clamping blocks are respectively provided with a second bearing 313, and the two second bearings 313 are respectively arranged in the groove holes 351 on the two sides of the pull rod 35; the middle of the clamping block 36 is provided with a mounting hole, the mounting part 41 of the switching triangle 4 penetrates through a through hole on the triangle mother board and is fixed in the mounting hole of the clamping block 36, when the rotating motor 34 drives the pull rod 35 to reciprocate through the first cam 39, the pull rod 35 drives the end parts of the two clamping blocks 36, so that the clamping block 36 and the switching triangle 4 rotate around the through hole on the triangle mother board 1 together, and the needle moving track on the knitting needle-turning triangle 3 is switched.

As shown in fig. 9 and 10, the initial position of the switching cam 4 is in the knitting position, and the plate spring 312 between the two clamp blocks 36 causes the switching cam 4 to abut against the side of the needle change track 33 above the knitting needle change cam 3, so that the knitting needle enters from the track entrance 31 and then moves along the lower knitting track 32, thereby completing the knitting operation. As shown in fig. 11 and 12, the pull rod 35 moves upward to drive the clamping block 36 and the switching cam 4 to rotate around the through hole on the cam mother plate 1, so that the switching cam 4 enters the needle transferring position, the plate spring 312 makes the switching cam 4 tightly attached to one side of the knitting track 32 below the knitting needle transferring cam 3, and the knitting needle moves along the needle transferring track 33 above after entering from the track entrance 31, thereby completing the needle transferring work.

The back of the triangular mother board 1 is also provided with a second driving component for driving the stitch cam 5 and the letter cam 6, and the second driving component comprises a stitch motor 52, a stitch cam 53, a stitch swing rod 54, a stitch connecting block 55 and a stitch guiding block 56; the mesh motor 52 is arranged on the triangular mother board 1, and the mesh cam 53 is arranged on a motor shaft of the mesh motor 52.

The stitch guide block 56 is arranged in a stitch sliding groove 57 of the triangular mother board 1, one side of the stitch guide block 56 is connected with the stitch triangle 5, and the other side is fixed with a stitch connecting block 55; one end of the mesh oscillating rod 54 is rotatably mounted on the mesh connecting block 55, the other end of the mesh oscillating rod is provided with a first hook 541, a second hook 551 is arranged on the mesh connecting block 55, the mesh oscillating rod 54 and the mesh connecting block 55 are respectively provided with a third bearing 58, and the first hook of the mesh oscillating rod 54 and the second hook of the mesh connecting block 55 are provided with a first tension spring 59, so that the two third bearings 58 can be tightly attached to the inner and outer contour surfaces of the mesh cam 53.

The letter-gram triangle 6 is arranged on the letter-gram triangle sliding block 62, the letter-gram triangle sliding block 62 is arranged in the letter-gram triangle sliding groove of the triangle mother board 1, the letter-gram triangle sliding block 62 and the triangle mother board 1 are respectively provided with a spring rubber seat 63, and two ends of a second tension spring 64 are respectively hung on the two spring rubber seats 63. The letter gram triangle 6 is equipped with a boss 61 towards one side of stitch triangle, and the side of stitch triangle 5 is equipped with a recess 51, and in stitch triangle's recess 51 was arranged in to letter gram triangle's boss 61, letter gram triangle 6 passed through boss 61 and recess limit butt, realized the linkage with stitch triangle 5, and stitch motor 52 passes through stitch cam 53 and drives stitch triangle 5 and letter gram triangle 6.

When the stitch motor 52 drives the stitch cam 53 to rotate, the stitch swing rod 54 and the stitch connecting block 55 move along the profile surface of the stitch cam 53 through the third bearing 58, so as to drive the stitch cam 5 to move back and forth in the stitch sliding groove 57. When the stitch cam 53 rotates clockwise, the stitch cam 5 moves towards the direction a, the boss 61 on the side surface of the sinker cam 6 abuts against one side of the groove 51 on the stitch cam 5, and the both move towards the direction a until the stitch guide block 56 is limited by one side of the stitch chute 57 on the cam mother board 1. When the stitch cam 53 rotates anticlockwise, the stitch cam 5 moves towards the direction B, the sinker cam 6 also moves towards the direction B under the action of the second tension spring 64, clings to one side of the groove 51 of the stitch cam 5 until the second tension spring 64 resets, and the stitch cam 5 can also continue to move towards the direction B as required until the stitch guide block 56 is limited by the other side of the stitch sliding groove 57 on the cam mother board. If the second tension spring 64 fails during the movement of the letter-gram triangle 6, the stitch-triangle 5 can drive the letter-gram triangle 6 to move towards the B direction.

The back of the triangular mother board 1 is also provided with a reset driving assembly for driving a reset triangle, and the reset triangle 8 is fixed with a reset triangle cover plate 81 and movably arranged in a vertical groove of the triangular mother board 1; the reset driving assembly comprises a reset motor 82 and a reset connecting rod 83, the reset motor 82 is arranged on the needle selecting mother board 2, and a gear 84 is arranged on a motor shaft of the reset motor 82; the triangular mother board 1 is provided with a connecting rod seat 85, the reset connecting rod 83 is movably arranged on the connecting rod seat 85, a connecting rod rack 86 is fixedly arranged on the reset connecting rod 83, the connecting rod rack 86 is meshed with a gear 84 on the reset motor, and the reset motor 82 drives the reset connecting rod 83 through the connecting rod rack 86; the reset connecting rod 83 is also provided with a plurality of inclined movable grooves 831, and the number of the inclined sliding grooves 831 is consistent with that of the reset triangles; the reset triangular cover plate 81 is provided with a reset bearing 87, and the reset bearing 87 is arranged in the inclined movable groove of the reset connecting rod 83. An induction block 832 is arranged at one end of the reset connecting rod 83, an inductor seat 89 and an inductor 88 are arranged on the needle selecting mother board 2, and the induction block and the inductor work in a matching way, so that whether the reset triangle is at the lowest position or not is induced.

The reset motor 82 drives the connecting rod rack 86 through the gear 84, so that when the reset connecting rod 83 is driven to move left and right, the reset bearing 87 on the reset triangular cover plate 81 is arranged in the inclined movable groove of the reset connecting rod 83, and the reset triangle 8 is driven to move up and down in the vertical groove of the triangular mother plate 1 under the action of the inclined movable groove.

As shown in fig. 2, during knitting, the two raising cams 9 enter the operating position, the two receiving cams 10 exit the operating position, the selector is raised along the raising cams, the needle path of the selector is S1, and the knitting needle above the selector enters the knitting transfer cam; at the moment, the switching cam is in a knitting position, namely the switching cam is tightly attached to one side of a needle turning track above the knitting needle turning cam, so that the knitting needle enters a knitting track below the knitting needle to finish knitting, and the knitting path of the knitting needle is S2.

As shown in fig. 3, when the needle is turned over, the two raising cams 9 enter the operating position, the two connecting cams 10 retreat from the operating position, the selector is raised along the raising cams, the needle path of the selector is S3, and the knitting needle above the selector enters the knitting needle-turning cams; at the moment, the switching cam is in the needle reversing position, namely the switching cam is tightly attached to one side of the knitting track below the knitting needle reversing cam, so that the knitting needle enters the needle reversing track above to complete the needle reversing work, and the needle reversing and needle moving track of the knitting needle is S4.

As shown in fig. 4, when the machine head moves left, the left and right needle raising cams and the left needle connecting cam exit the working position, the right needle connecting cam enters the working position, the knitting needle moves along the needle connecting needle path, the needle selecting sheet path is S5, and the needle connecting needle path is S6; if the machine head moves rightwards, the needle raising cams on the left side and the right side and the needle connecting cams on the right side exit from the working positions, the needle connecting cams on the left side enter the working positions, and the knitting needles move along the needle connecting and running track.

When the knitting needle at the position of the lower needle bed is in needle out, the stitch cam of the upper needle bed needs to descend to the lowest position, and meanwhile, the reset cam also needs to descend, so that the height is ensured to be lower than the lowest position of the stitch cam.

Claims

1. A knitting cam system in a flat knitting machine comprises a cam panel, wherein the cam panel is divided into a knitting area and a needle selecting area;

2. The knitting cam system in the flat knitting machine according to claim 1, characterized in that: the knitting needle-turning cam is bilaterally symmetrical along a central line, horn-shaped track inlets are formed in two sides of the knitting needle-turning cam, and two tracks, namely a knitting track and a needle-turning track, are arranged above the track inlets; the switching triangle is arranged at the boundary of the knitting track and the needle turning track, the first driving assembly drives the switching triangle to rotate, and the track inlet is communicated with the knitting track or the needle turning track.

3. The knitting cam system in the flat knitting machine according to claim 2, characterized in that: the first driving assembly comprises a rotating motor, a pull rod and a clamping block, wherein a first cam is mounted on the rotating motor, the edge of the local part of the first cam is wavy in the axial direction, two first bearings are arranged on the pull rod, and the wavy edge of the first cam is arranged between the two first bearings and is matched with the first bearings for working; the left side and the right side of the pull rod are respectively provided with a slotted hole, the switching triangle penetrates through the triangular panel and is installed on the clamping block, and the clamping block is arranged in the slotted holes on the two sides of the pull rod through the second bearing; the rotating motor drives the pull rod to reciprocate through the first cam, and the switching triangle is driven to rotate.

4. The knitting cam system in the weft knitting machine according to claim 3, characterized in that: the clamping block is divided into a left clamping block and a right clamping block which are arranged oppositely, and a plate spring is arranged between the left clamping block and the right clamping block; the end part of the clamping block is provided with a second bearing, the second bearing is arranged in a groove hole of the pull rod, the middle of the clamping block is provided with a mounting hole, and the switching triangle is fixed in the mounting hole.

5. The knitting cam system in the flat knitting machine according to claim 1, characterized in that: the letter gram triangle is equipped with a boss towards one side of stitch triangle, and the side of stitch triangle is equipped with a recess, and in the recess of stitch triangle was arranged in to letter gram triangle's boss, letter gram triangle passed through the cooperation of boss and recess and with the linkage of stitch triangle.

6. The knitting cam system in the flat knitting machine according to claim 1, characterized in that: the second driving assembly comprises a stitch motor, a stitch cam and a stitch connecting piece, a stitch sliding groove, through which a stitch triangle penetrates a triangular panel, is arranged on the stitch connecting piece, the stitch cam is arranged on the stitch motor, the stitch connecting piece is tightly attached to the contour surface of the stitch cam through a third bearing, and the stitch motor drives the stitch triangle and the letter triangle through the stitch cam.

7. The knitting cam system in the weft knitting machine according to claim 6, characterized in that: the stitch connecting piece comprises a stitch oscillating bar, a stitch connecting block and a stitch guiding block, the stitch guiding block is arranged in a stitch sliding groove of the triangular panel, one side of the stitch guiding block is connected with a stitch triangle, and the other side of the stitch guiding block is provided with the stitch connecting block; one end of the mesh oscillating rod is rotatably installed on the mesh connecting block, the other end of the mesh oscillating rod is provided with a first hook, a second hook is arranged on the mesh connecting block, third bearings are respectively arranged on the mesh oscillating rod and the mesh connecting block, and a first tension spring is arranged on the first hook of the mesh oscillating rod and the second hook of the mesh connecting block.

8. The knitting cam system in the flat knitting machine according to claim 1, characterized in that: the letter gram triangle is installed on letter gram triangle slider, and letter gram triangle slider is arranged in the letter gram triangle spout of triangle panel, is equipped with the second extension spring between letter gram triangle slider and the triangle panel.

9. The knitting cam system in the flat knitting machine according to claim 1, characterized in that: the reset triangle is fixed with the reset triangle cover plate and is movably arranged in the vertical groove of the triangle panel; the reset driving assembly comprises a reset motor and a reset connecting rod, a gear is arranged on the reset motor, a rack meshed with the gear is arranged on the reset connecting rod, and the reset motor drives the reset connecting rod through the rack; the reset connecting rod is also provided with an inclined movable groove, the reset triangular cover plate is provided with a reset bearing, the reset bearing is arranged in the inclined movable groove of the reset connecting rod, and the reset connecting rod drives the reset triangle to move up and down.