阅读说明：本技术 一种横机中的三角控制机构 (Triangle control mechanism in flat knitting machine ) 是由 孙荣飞 于 2020-06-19 设计创作，主要内容包括：本发明公开了一种横机中的三角控制机构,包括信克三角、度目三角以及带动度目三角移动的驱动组件；所述驱动组件包括度目电机、度目凸轮和度目连接件,度目三角安装在度目连接件上,度目凸轮安装在度目电机上,度目连接件通过轴承紧贴度目凸轮的轮廓面；所述信克三角朝向度目三角的一侧设有一凸台,度目三角的侧面设有一凹槽,信克三角的凸台置于度目三角的凹槽内,信克三角与度目三角联动,度目电机通过度目凸轮带动度目三角与信克三角。本发明把原本各自独立驱动的信克三角和度目三角联动,由同一个机构驱动,不仅能够满足度目三角和信克三角的工作需求,还减小在三角母板上的占用面积,满足机头的多样性需求。(The invention discloses a cam control mechanism in a flat knitting machine, which comprises a sinker cam, a stitch cam and a driving component for driving the stitch cam to move; the driving assembly comprises a mesh motor, a mesh cam and a mesh connecting piece, the mesh triangle is arranged on the mesh connecting piece, the mesh cam is arranged on the mesh motor, and the mesh connecting piece is tightly attached to the contour surface of the mesh cam through a bearing; 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 triangle's of stitch recess was arranged in to letter gram triangle's boss, letter gram triangle and the linkage of stitch triangle, stitch motor passed through stitch cam and drives stitch triangle and letter gram triangle. According to the invention, the original letter-gram triangle and the stitch triangle which are independently driven are linked and driven by the same mechanism, so that the working requirements of the stitch triangle and the letter-gram triangle can be met, the occupied area on the triangle mother board is reduced, and the diversity requirements of the machine head are met.)

1. A cam control mechanism in a flat knitting machine is characterized in that: the device comprises a sinker cam, a stitch cam and a driving component for driving the stitch cam to move; the driving assembly comprises a mesh motor, a mesh cam and a mesh connecting piece, the mesh triangle is arranged on the mesh connecting piece, the mesh cam is arranged on the mesh motor, and the mesh connecting piece is tightly attached to the contour surface of the mesh cam through a bearing; the letter gram triangle, the degree triangle is all movable mounting on the triangle mother board, and letter gram triangle is equipped with a boss towards one side of degree triangle, and the side of degree triangle is equipped with a recess, and in the degree triangle's recess 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 degree triangle, and the degree triangle is driven through degree cam to the degree motor and is measured triangle and letter gram triangle.

2. The cam control mechanism in a flat knitting machine according to claim 1, characterized in that: one side of the mesh connecting piece is connected with the mesh triangle, the other side of the mesh connecting piece is provided with two bearings, and the two bearings are tightly attached to the inner contour surface and the outer contour surface of the mesh cam.

3. The cam control mechanism in a flat knitting machine according to claim 1, 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 mother board, 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, a bearing is 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.

4. The cam control mechanism in a flat knitting machine according to claim 1, characterized in that: the letter-gram triangle is arranged on the letter-gram triangle sliding block, the letter-gram triangle sliding block is arranged in a letter-gram triangle sliding groove of the triangle mother board, and a second tension spring is arranged between the letter-gram triangle sliding block and the triangle mother board.

Technical Field

The invention belongs to the technical field of knitting machinery, and particularly relates to a cam control mechanism in a flat knitting 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 mother board, 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 mountain protecting cam, a middle cam guide block, a needle turning guide block, a reset cam, a stitch cam, a sinker cam and the like. 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 invention aims to provide a cam control mechanism in a flat knitting machine, which can drive a sinker cam and a stitch cam simultaneously to play roles in adjusting fabric density and controlling sinkers.

Therefore, the technical scheme of the invention is as follows: a cam control mechanism in a flat knitting machine is characterized in that: the device comprises a sinker cam, a stitch cam and a driving component for driving the stitch cam to move; the driving assembly comprises a mesh motor, a mesh cam and a mesh connecting piece, the mesh triangle is arranged on the mesh connecting piece, the mesh cam is arranged on the mesh motor, and the mesh connecting piece is tightly attached to the contour surface of the mesh cam through a bearing; the letter gram triangle, the degree triangle is all movable mounting on the triangle mother board, and letter gram triangle is equipped with a boss towards one side of degree triangle, and the side of degree triangle is equipped with a recess, and in the degree triangle's recess 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 degree triangle, and the degree triangle is driven through degree cam to the degree motor and is measured triangle and letter gram triangle.

Preferably, one side of the stitch connecting piece is connected with the stitch triangle, the other side of the stitch connecting piece is provided with two bearings, and the two bearings are tightly attached to the inner contour surface and the outer contour surface of 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 mother board, 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, a bearing is 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 arranged on a letter-gram triangle sliding block, the letter-gram triangle sliding block is arranged in a letter-gram triangle sliding groove of the triangle mother board, and a second tension spring is arranged between the letter-gram triangle sliding block and the triangle mother board.

The stitch cam and the sinker cam are arranged on the front surface of the triangular mother board, the stitch motor is fixed on the back surface of the triangular mother board through the motor frame, and a first tension spring is arranged between the stitch swing rod and the stitch connecting block, so that the two bearings are respectively abutted to the inner contour surface and the outer contour surface of the stitch cam, the gap is eliminated, and the stitch cam can pass through the stitch guide block to move back and forth in the groove of the triangular mother board. The letter-gram triangular sliding block is fixed on a letter-gram mountain corner and moves back and forth in a groove of the triangular mother plate along with the letter-gram triangle, the letter-gram triangular sliding block and the triangular mother plate are respectively provided with a spring rubber seat, and two ends of the second tension spring are respectively hung on the two spring rubber seats.

The letter-gram triangle is linked with the stitch triangle through a lug boss. 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.

According to the invention, the original letter-gram triangle and the stitch triangle which are independently driven are linked and driven by the same mechanism, so that the working requirements of the stitch triangle and the letter-gram triangle can be met, the cost of the machine head is reduced, the occupied area on the triangle mother board is reduced, the area of the triangle mother board is conveniently reduced, and the diversity requirements of the machine head are met.

Drawings

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

FIG. 1 is a schematic structural view of a weaving cam system;

FIG. 2 is a schematic diagram of a knitting path;

FIG. 3 is a schematic diagram of a stitch-flipping trajectory;

FIG. 4 is a schematic diagram of a needle-joining path;

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.