Numerical control high-speed fuzzing mechanism

Abstract

The invention relates to a numerical control high-speed fuzzing mechanism. A beating-up fixed stroke reciprocating mechanism is movably hinged to a beating-up transmission link rod, and a beating-up sley part is limited and driven by a numerical control rotating seat link rod mechanism; the numerical control rotating seat link rod mechanism comprises a numerical control servo motor, a speed reducing mechanism, a rotating seat, a fulcrum stabilizing link rod, an original point mechanism and an electric box, the numerical control servo motor drives the rotating seat to rotate around the center of the rotating seat through the speed reducing mechanism, and one end of the fulcrum stabilizing link rod is hinged to the non-center of the rotating seat; the length of the fulcrum stabilizing link rod is equal to the distance from the center of the hinge point of the fulcrum stabilizing link rod on the rotating seat to the center of the rotating seat; the other end of the fulcrum stabilizing link rod is hinged with the common hinge point of the first-stage link rod and the second-stage link rod. The rotating seat rotates by a set angle to drive the fulcrum stabilizing link rod to control the joint hinge point of the first-stage transmission link rod and the second-stage transmission link rod to control the beating-up position, so that the phenomenon that the joint hinge point of the first-stage transmission link rod and the second-stage transmission link rod is easily abraded and damaged by adopting a sliding groove in the rotating seat is effectively avoided, the transmission stability is considered, and the service life is prolonged.

Description

Technical Field

[0001] The invention relates to a beating-up mechanism for a towel loom, in particular to a numerically controlled high-speed raising mechanism. Background Art

[0002] The raising mechanism of traditional towel machines is divided into reed-driven raising and cloth-driven raising. Cloth-driven raising controls the movable breast beam and back beam of the loom to move the cloth fell to complete the raising. It has the disadvantages of high driving energy consumption, large yarn friction, high strength requirements, difficulty in front and back synchronization, and low production efficiency. Reed-driven raising controls the relative displacement of the reed weft beating point to control the height of each weft to achieve raising. Compared with cloth-driven raising, it has the advantages of low reed driving energy consumption, small yarn friction, and high production efficiency. The applicant's prior patents of CNC rotary cam controlled fulcrum slideway raising mechanism 201210559088.1, high-speed beating and raising mechanism 201611186562.5 and raising mechanism 201911385718.6 use a CNC servo motor to control the slide seat to rotate a certain angle through a reducer, and then control the motion track of the hinge point of the first and second transmission connecting rods through the slide on the slide seat. The linear stroke of the first and second transmission connecting rods when they move to the extreme point in the direction of the sley foot is changed through a conjugate cam group or a crank, thereby realizing stable and adjustable long and short beating of the sley. However, the slider or rotor at the connection point of the first and second transmission connecting rods slides or rolls in the slide on the slide seat. The slider or rotor is a sliding or rolling bearing structure in the slide, and the use requirements of its bearing structure are extremely high. Under the condition of long-term and frequent reciprocating operation of towel machine weaving, it is easy to wear, generate gaps and noise, and suffer serious damage, which has a great impact on the performance and safety life of the loom. Summary of the invention

[0003] The invention provides a high-speed weft beating and raising mechanism which has a simple structure and can ensure stable transmission, long service life, low vibration and low noise.

[0004] The technical solution adopted by the present invention is: a numerically controlled high-speed raising mechanism, including a numerically controlled rotating seat linkage mechanism, a reciprocating mechanism for beating a fixed stroke, a beating transmission linkage, an electric box, a beating sley seat part and a frame, wherein the beating transmission linkage includes a primary transmission linkage and a secondary transmission linkage, wherein one end of the primary transmission linkage is movably hinged to the fixed stroke reciprocating mechanism swing arm linkage at a swing arm hinge point, and the other end is movably hinged to one end of the secondary transmission linkage via a common hinge point, and the other end of the secondary transmission linkage is movably hinged to the sley foot of the beating sley seat part or to the sley foot of the beating sley seat part at the beating hinge point. On a lever fixedly connected to the sley foot; characterized in that: the CNC rotating seat linkage mechanism includes a CNC servo motor, a reduction mechanism, a rotating seat, a fulcrum stabilizing linkage, an origin mechanism and an electric box, the CNC servo motor is fixedly arranged on the frame, the rotating seat is in a state of being rotatable around the center of the rotating seat on the frame, one end of the fulcrum stabilizing linkage is hinged at a non-center position on the rotating seat, the other end of the fulcrum stabilizing linkage is hinged to a common hinge point of the first and second level linkages, and the length of the fulcrum stabilizing linkage is equal to the center of the hinge point of the fulcrum stabilizing linkage on the rotating seat The distance from the center of the swing arm to the center of the rotating seat; when the swing arm hinge point is at the farthest position from the center of the rotating seat, the distance between the center of the swing arm hinge point and the center of the rotating seat is the length of the primary linkage rod and the center line of the common hinge point coincides with the center of the rotating seat; the rotating seat, the output shaft of the CNC servo motor, the main shaft, the swing arm support shaft and the slay support point are rotatable on the frame and the center line positions are relatively fixed and parallel; the electric box controls the CNC servo motor to rotate a certain angle according to the pulse number set by the process, and at the same time drives the rotating seat to rotate around the rotating seat through the reduction mechanism The center rotates a certain angle from the origin position, and then controls the position of the common hinge point of the primary and secondary connecting rods through the fulcrum stabilizing connecting rod to change the angle between the primary and secondary connecting rods when the swing arm hinge point is closest to the center of the rotating seat, thereby changing the distance between the swing arm hinge point and the beating hinge point, and finally controlling the position of the beating point of the weft yarn of the reed fixed on the sley seat foot to realize the long and short beating process of the reed; the beating fixed stroke reciprocating mechanism adopts a conjugate cam beating mechanism of a conjugate cam combined with a swing arm, a four-link beating mechanism, or a six-link beating mechanism.

[0005] Furthermore, the fixed-stroke reciprocating mechanism for beating the weft includes a conjugate cam group, a swing arm and a rotor. The swing arm includes a force arm, a swing arm support shaft and a swing arm connecting rod. The swing arm support shaft in the middle of the swing arm can be rotatably hinged and connected to the loom frame. One end of the primary transmission connecting rod is movably hinged to one end of the swing arm connecting rod at the swing arm hinge point, and the other end of the swing arm connecting rod is fixedly connected to the swing arm support shaft. A rotor is respectively provided on the force arms fixed at fixed angles on both sides of the swing arm support shaft, which are respectively and gaplessly matched on the two cams of the conjugate cam group, so that the swing arm is in a fixed-stroke reciprocating rotation state on the frame with the center line of the swing arm support shaft as the center.

[0006] Furthermore, it also includes an origin signal mechanism, which includes an origin signal cam and a signal sensor. The origin signal cam is provided on the rotating seat or on the shaft that rotates on the frame synchronously with the rotating seat. The signal sensor fixed on the frame corresponds to the original signal cam and is connected to an electrical box. The origin signal mechanism may be an encoder, and the input shaft of the encoder is connected to the rotating seat or to the shaft that rotates on the frame at a fixed ratio with the rotating seat, and the encoder is connected to the electrical box.

[0007] Furthermore, the reduction mechanism includes a pinion gear, which meshes with the circumferential external teeth of the rotating seat, or meshes with the circumferential external teeth of a large gear or a gear arm which is fixedly connected to the rotating seat coaxially.

[0008] Furthermore, a limiting mechanism is provided, in which a limiting core shaft or a limiting block is provided on the frame, and an arc groove or a limiting surface corresponding to the limiting core shaft or the limiting block is provided on the rotating seat or on the moving part that rotates synchronously with the rotating seat to prevent the rotating seat from overtravel during movement, and the limiting core shaft is connected to the arc groove for limitation.

[0009] Furthermore, the reduction mechanism is a planetary reducer, the input end of the planetary reducer is connected to a CNC servo motor, and the output end is cocentrically connected to a rotating seat or a shaft that rotates synchronously with the rotating seat. The reduction mechanism may be a worm gear reduction mechanism, the worm is connected to a CNC servo motor, and the worm wheel is cocentrically connected to a rotating seat or a shaft that rotates synchronously with the rotating seat.

[0010] During operation, the conjugate cam group rotates with the main shaft, and the two cam pieces of the conjugate cam group act on the rotors of the two force arms on the swing arm respectively. The reciprocating motion of the force arm drives the primary transmission link to reciprocate in a fixed stroke through the swing arm connecting rod, or the crank shaft drives the primary transmission link to reciprocate in a fixed stroke; or the crank is driven by the crank connecting rod to reverse the power transmission direction through the reversing lever, and the primary transmission link is driven by the reversing lever to reciprocate in a fixed stroke. The crank connecting rod and the primary and secondary connecting rods move in opposite directions, and dynamic balance is achieved through power transmission from the crank, crank connecting rod, reversing lever, primary and secondary transmission connecting rods to the sley foot. The reed movement raising process is dynamically balanced, which is convenient for high-speed weaving, vibration reduction and noise reduction.

[0011] At the same time, the electric box controls the CNC servo motor to rotate a certain angle according to the number of pulses set in the process, and drives the rotating seat to rotate a certain angle around the center of the rotating seat from the origin position through the reduction mechanism, and then controls the position of the common hinge point of the primary and secondary connecting rods through the fulcrum stabilizing connecting rod to change the angle between the primary and secondary connecting rods when the swing arm hinge point is closest to the center of the rotating seat, thereby changing the distance between the swing arm hinge point and the weft beating hinge point, and finally controlling the position of the weft beating point of the steel reed fixed on the reed seat foot to beat the weft yarn to realize the long and short weft beating process of the steel reed. The overall transmission structure is simple, without the need for a slide seat, a slide pairing slider, easy manufacturing, low cost, and can effectively solve the problem of easy damage of sliding and rolling bearings of the slider, thereby ensuring stable transmission and extending the service life of the mechanism.

[0012] The present invention adopts a fulcrum stabilizing link with one end eccentrically installed on the rotating seat, and the other end is hinged to the common hinge point of the primary and secondary transmission links. An electric box is used to control the CNC servo motor to rotate a certain angle according to the number of pulses set in the process. At the same time, the reduction mechanism drives the rotating seat to rotate a certain angle around the center of the rotating seat from the origin position. Then, the fulcrum stabilizing link controls the position of the common hinge point of the primary and secondary links to change the angle of the primary and secondary links when the swing arm hinge point is closest to the center of the rotating seat, thereby changing the distance between the swing arm hinge point and the beating hinge point, and finally controlling the position of the beating point of the weft yarn of the steel reed fixed on the reed foot. The position of the beating point of the weft yarn of the steel reed is different if the number of pulses in the process is different. When the number of pulses in the process is 0, the beating point of the steel reed is at Figure 2 The middle one is the rightmost state, i.e. the origin closed state.

[0013] The present invention uses a fixed stroke reciprocating transmission to change the linear stroke of the primary and secondary transmission connecting rods when they move to the sley foot to the extreme point, so as to meet the control of the reed amount at different nap raising heights. The overall connecting rod transmission structure is simple and compact, without the hidden dangers of sliding and rolling wear, and the stability and life of use are effectively guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the mechanism of the present invention when the weft is inserted in a non-hairy state, i.e., in an origin state; Figure 2 It is a schematic structural diagram of the present invention when the weft is not fuzzed, i.e., in the origin state and the long weft is beaten (closed reed state); Figure 3 It is a structural schematic diagram of the weft insertion in the non-origin state of the raising of the present invention; Figure 4 It is a schematic structural diagram of the present invention when the weft is short-beaten in a non-origin state (reed stretching state).

[0015] In the figure: sley foot 1, beating-up hinge point 1-1, reed 2, sley foot fulcrum 3, electric box 4, beating-up fixed stroke reciprocating mechanism 5, CNC rotating seat connecting rod mechanism 6, rotating seat 7, rotating seat center 7-1, fulcrum stabilizing connecting rod 8, primary transmission connecting rod 9, common hinge point 10, secondary transmission connecting rod 11, beating-up conjugate cam group 12, main shaft 12-1, force arm 13, swing arm fulcrum 13-1, rotor 14, swing arm connecting rod 15, swing arm hinge point 15-1, warp 16, CNC servo motor 17, small gear 18, large gear 18-1, signal cam 19, signal sensor 20, arc groove 21, limit core shaft 22, swing arm 23, raising reed amount A, interweaving overlap point B. DETAILED DESCRIPTION

[0016] The following is a further description with reference to the accompanying drawings.

[0017] Figure 1 , 2 As shown in Figures 3 and 4: a high-speed beating and raising mechanism, including a reed foot 1, a reed 2, a sley foot fulcrum 3, an electric box 4, a beating fixed stroke reciprocating mechanism 5, a CNC rotating seat connecting rod mechanism 6, a rotating seat 7, a fulcrum stabilizing connecting rod 8, a primary transmission connecting rod 9, a secondary transmission connecting rod 11, a beating conjugate cam group 12, a main shaft 12-1, a force arm 13, a rotor 14, a swing arm connecting rod 15, a warp 16, a CNC servo motor 17, a small gear 18, a large gear 18-1, a signal cam 19, a signal sensor 20, and a limit core shaft 22.

[0018] The beating fixed stroke reciprocating mechanism 5 includes a beating conjugate cam group 12, a swing arm support shaft 13-1, a force arm 13, a rotor 14 and a swing arm connecting rod 15. The beating conjugate cam group 12 is fixedly sleeved on the loom main shaft 12-1 and is rotatable on the frame. The swing arm support shaft 13-1 in the middle of the force arm 13 is rotatably hinged and connected to the loom frame. One end of the primary transmission connecting rod 9 is movably hinged to one end of the swing arm connecting rod 15 through the swing arm hinge point 15-1, and the other end of the swing arm connecting rod 15 is fixedly connected to the swing arm support shaft 13-1. There is a rotor 14 on each of the force arms 13 on both sides of the swing arm support shaft 13-1, which is respectively matched with the two cams of the conjugate cam group 12 without gap, so that the swing arm 23 is centered on the swing arm support shaft 13-1 and is in a fixed stroke reciprocating rotation state on the frame.

[0019] The other end of the primary transmission link 9 is movably hinged to one end of the secondary transmission link 11 via a common hinge point 10, and the other end of the secondary transmission link 11 is movably hinged to a beating hinge point 1-1 at the lower end of a sley foot 1 of the beating sley part, and the middle part of the sley foot 1 is rotatable on the loom frame through a sley fulcrum 3, and a sley 2 for threading the warp thread 16 and beating the weft thread is fixedly arranged at the upper end of the sley foot 1.

[0020] The numerical control rotating seat linkage mechanism 6 adopts the numerical control servo motor 17 to mesh with the outer teeth of the large gear 18-1 fixedly connected with the rotating seat 7 through the small gear 18, so that the rotating seat 7 rotates on the frame around the rotating seat center 7-1. The rotating seat 7 is hinged with one end of the non-central fulcrum stabilizing link 8, and the other end of the fulcrum stabilizing link 8 is hinged with the common hinge point 10 of the first and second level links 9 and 11. The length of the fulcrum stabilizing link 8 is equal to the distance from the center of the hinge point of the fulcrum stabilizing link 8 on the rotating seat 7 to the rotating seat center 7-1. The length of the first level transmission link 9 is equal to the distance between the center of the swing arm hinge point 15-1 and the rotating seat center 7-1 when the swing arm hinge point 15-1 is at the farthest position from the rotating seat center 7-1. The rotating seat 7 is also provided with a signal convex 19, and the electric box 4 is connected to the signal sensor 20 corresponding to the signal convex 19.

[0021] A limiting core shaft 22 is provided on the loom frame, and an arc groove 21 concentric with the center 7 - 1 of the rotating seat is provided on the large gear 18 - 1 , and the limiting core shaft 22 is connected to the arc groove 21 for limiting.

[0022] like Figure 1 The state of the CNC rotating seat linkage mechanism 6 shown is: the origin signal convex 19 on the rotating seat 7 corresponds to the lighting signal sensor 20, the large gear 18-1 cocentrically fixed on the rotating seat 7 is meshed with the small gear 18 fixed on the CNC servo motor 17, and the hinge point of the fulcrum stabilizing link 8 at the non-center position on the rotating seat 7 is set at the lower left of the center 7-1 of the rotating seat. Under the control of the electric box 4, the CNC servo motor 17 keeps the rotating seat 7 in the origin signal lighting state, that is, the origin position, via the small gear 18 and the large gear 18-1. The two rotors 14 of the swing arm 23 are respectively close to the weft beating conjugate cam group 12, and the right rotor 14 is at the minimum radius of the small cam piece of the weft beating conjugate cam group 12. At this time, the loom is in the weft insertion state, and the swing arm hinge point 15-1 of the swing arm 23 is at the farthest position from the center 7-1 of the rotating seat. Under the action of the rotating seat 7 and the fulcrum stabilizing link 8, the common hinge point 10 of the primary transmission link 9, the secondary transmission link 11 and the fulcrum stabilizing link 8 coincides with the center 7-1 of the rotating seat. Under the action of the secondary transmission link 11, the weft beating hinge point 1-1 at the lower end of the reed foot 1 is at the lower right of the slay foot fulcrum 3, and the reed 2 at the upper end of the slay foot 1 is at the upper left of the slay foot fulcrum 3. The reed 2 is farthest from the interlaced overlapping point B of the upper and lower warp threads 16 passing therethrough. At this time, the weft yarn passes through the gap between the upper and lower warp threads on the right side of the reed 2 to insert the weft.

[0023] like Figure 2 As shown, the state and Figure 1There is no change. The right rotor 14 on the swing arm 23 acting on the small cam of the weft-beating conjugate cam group 12 is at the maximum radius of the small cam under the rotation of the small cam. At this time, the swing arm hinge point 15-1 is in the position closest to the center 7-1 of the rotating seat, and the common hinge point 10 is also moved to the far right under the action of the primary connecting rod. At this time, the primary transmission connecting rod 9 and the secondary transmission connecting rod 11 are in a straight line or closest to a straight line, and the weft-beating hinge point 1-1 is also in the far left state. The reed 2 on the reed seat foot 1 is beaten at the interweaving overlap point B of the upper and lower warp threads 16. At this time, the reed 2 is beaten to the far right in the right direction, completing the long weft beating of the towel machine, that is, hair-free closed reed beating.

[0024] like Figure 3 As shown: the state of the CNC rotating seat linkage mechanism 6: the electric box 4 controls the CNC servo motor 7 to rotate according to the pulse number set by the process, and at the same time drives the rotating seat 7 to rotate clockwise around the rotating seat center 7-1 from the origin position by a certain angle through the small gear 18 and the large gear 18-1. The larger the pulse number set by the process, the larger the angle of rotation of the rotating seat 7 from the origin position, and the corresponding pivot stabilizing link 8 and the hinge point of the rotating seat 7 are compared with Figure 1 Figure 2 The position in the middle is also higher. Figure 3 The state and function of the fixed stroke reciprocating mechanism of the middle weft beating Figure 1 Similarly, due to the length characteristics of the primary transmission link 9 and the fulcrum stabilizing link 8, the centerline position of the common hinge point 10 coincides with the center 7-1 of the rotating seat, and the rotating seat 7 rotates to Figure 3 The position of the central joint 10 has no effect, and the corresponding position states of the secondary transmission link 11, the beating joint 1-1, the sley foot 1, and the reed 2 are the same as Figure 1 Same as in this Figure 3 It is further explained that no matter what state the CNC rotating seat linkage mechanism 6 is in, when the loom is in the weft insertion state, the position of the reed does not change, and the loom is always in the best state during weft insertion, which is more convenient for the towel loom to weave at high speed when it is not linting or linting, that is, long and short weft insertion.

[0025] like Figure 4 As shown, the state of the CNC rotating seat linkage mechanism 6 is Figure 3 As described in the above, the beating fixed stroke reciprocating mechanism 5 is in the same state as Figure 2 As in the state shown, the rotating seat 7 rotates clockwise by a certain angle, and the hinge point position of the fulcrum stabilizing link 8 and the rotating seat 7 is also raised accordingly. Under the action of the fulcrum stabilizing link 8 and the rotating seat 7, the common hinge point 10 is Figure 2 The position in the middle is raised, so that the primary transmission link 9 and the secondary transmission link 11 form an angle, which is Figure 2As shown in the figure, the straight-line distance between the beating-up hinge point 1-1 and the swing arm hinge point 15-1 is shortened, the beating-up hinge point 1-1 is displaced to the right, and the beating-up point of the steel reed above the corresponding sley foot 1 is displaced to the left. Figure 4 As shown in the figure, the position of the reed beating-up is at a certain distance from the original overlapping point B of the upper and lower warp threads 16, i.e., the amount of hair raising reed A, thereby completing the short beating-up process, i.e., the beating-up process in the beating-up state of the loom. The more pulses are set in the process, the greater the angle of rotation of the rotating seat 7, the greater the angle between the primary and secondary transmission connecting rods 9 and 11 during beating-up, and the greater the distance between the reed 2 and the overlapping point B of the upper and lower warp threads 16 when it is at the beating-up position, i.e., the amount of hair raising reed A.

[0026] In the above embodiment, the fixed stroke reciprocating mechanism for beating the weft adopts a conjugate cam beating mechanism of a conjugate cam combined with a force arm, which can also be replaced by a four-link beating mechanism or a six-link beating mechanism, which is the applicant's prior patent disclosure technology.

[0027] In the above embodiment, the center of the rotating seat, the output shaft of the CNC servo motor, the main shaft, the swing arm support shaft and the sley support point are rotatable on the frame and the center line positions are relatively fixed and parallel. The mutual spacing and arrangement are calculated to achieve the function of the present invention.

[0028] In the above two embodiments, the electric box 4 is connected to the numerical control servo motor 17 and the signal sensor 20 .

[0029] In the above embodiments, the beating-up fixed-stroke reciprocating mechanism and the beating-up transmission connecting rod of the beating-up part are merely structures selected from the applicant's prior patents 201611186562.5 and 201610385569.3. The beating-up fixed-stroke reciprocating mechanism may also adopt the crank structure of the applicant's prior patent.

[0030] In the description of this specification, the description with reference to the terms "embodiment", "up and down", "left and right", "a certain distance", "a certain angle", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0031] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A numerically controlled high-speed raising mechanism, comprising a numerically controlled rotating seat linkage mechanism, a reciprocating mechanism for beating up a fixed stroke, a beating up transmission linkage, an electric box, a beating up sley seat part and a frame, wherein the beating up transmission linkage comprises a primary transmission linkage and a secondary transmission linkage, wherein one end of the primary transmission linkage is movably hinged to the swing arm linkage of the fixed stroke reciprocating mechanism at a swing arm hinge point, and the other end is movably hinged to one end of the secondary transmission linkage via a common hinge point, and the other end of the secondary transmission linkage is movably hinged to the sley foot of the beating up sley seat part or to a lever fixedly connected to the sley foot at the beating up hinge point; characterized in that: The CNC rotating seat linkage mechanism includes a CNC servo motor, a reduction mechanism, a rotating seat, a fulcrum stabilizing linkage, an origin mechanism and an electric box. The CNC servo motor is fixedly arranged on a frame, and the rotating seat is rotatable around the center of the rotating seat on the frame. One end of the fulcrum stabilizing linkage is hinged at a non-center position on the rotating seat, and the other end of the fulcrum stabilizing linkage is hinged to a common hinge point of the first and second level linkages. The length of the fulcrum stabilizing linkage is equal to the distance from the center of the hinge point of the fulcrum stabilizing linkage on the rotating seat to the center of the rotating seat; when the swing arm hinge point is at the farthest position from the center of the rotating seat, the distance between the center of the swing arm hinge point and the center of the rotating seat is the length of the first level linkage and the center line of the common hinge point coincides with the center of the rotating seat; the rotating seat, the CNC servo motor output shaft, the main shaft, the swing arm fulcrum and The sley seat fulcrum is rotatable on the frame and the center line position is relatively fixed and parallel; the electric box controls the CNC servo motor to rotate a certain angle according to the number of pulses set by the process, and at the same time drives the rotating seat to rotate a certain angle around the center of the rotating seat from the origin position through the reduction mechanism, and then controls the position of the common hinge point of the primary and secondary connecting rods through the fulcrum stabilizing connecting rod to change the angle between the primary and secondary connecting rods when the swing arm hinge point is closest to the center of the rotating seat, thereby changing the distance between the swing arm hinge point and the beating hinge point, and finally controlling the position of the beating point of the weft yarn of the steel reed fixed on the sley seat foot to realize the long and short beating process of the steel reed; the fixed stroke reciprocating mechanism for beating the weft adopts a conjugate cam beating mechanism of a conjugate cam combined with a swing arm, a four-link beating mechanism, or a six-link beating mechanism.

2. A CNC high-speed raising mechanism according to claim 1, characterized in that: The fixed-stroke reciprocating mechanism for beating the weft includes a conjugate cam group, a swing arm and a rotor. The swing arm includes a force arm, a swing arm support shaft and a swing arm connecting rod. The swing arm support shaft in the middle of the swing arm can be rotatably hinged and connected to the loom frame. One end of the primary transmission connecting rod is movably hinged to one end of the swing arm connecting rod at the swing arm hinge point, and the other end of the swing arm connecting rod is fixedly connected to the swing arm support shaft. A rotor is respectively provided on the force arms fixed at fixed angles on both sides of the swing arm support shaft, which are respectively matched with the two cams of the conjugate cam group without gaps, so that the swing arm is in a fixed-stroke reciprocating rotation state on the frame with the center line of the swing arm support shaft as the center.

3. A numerically controlled high-speed raising mechanism according to claim 1, characterized in that: It also includes an origin signal mechanism, which includes an origin signal cam and a signal sensor. An origin signal cam is provided on the rotating seat or on an axis that rotates on the frame synchronously with the rotating seat. The signal sensor fixed on the frame corresponds to the original signal cam and is connected to an electrical box. The origin signal mechanism may be an encoder, and the input shaft of the encoder is connected to the rotating seat or to an axis that rotates on the frame at a fixed ratio with the rotating seat, and the encoder is connected to the electrical box.

4. A numerically controlled high-speed raising mechanism according to claim 1, characterized in that: The speed reduction mechanism comprises a pinion gear, which meshes with the circumferential outer teeth of the rotating seat, or meshes with the circumferential outer teeth of a large gear or a tooth arm which is fixedly connected to the rotating seat coaxially.

5. A numerically controlled high-speed raising mechanism according to claim 4, characterized in that: A limiting mechanism is also provided, in which a limiting core shaft or a limiting block is provided on the frame, and an arc groove or a limiting surface corresponding to the limiting core shaft or the limiting block is provided on the rotating seat or on a moving part that rotates synchronously with the rotating seat to prevent the rotating seat from overtraveling during movement, and the limiting core shaft is connected to the arc groove for limiting.

6. A numerically controlled high-speed raising mechanism according to claim 4, characterized in that: The reduction mechanism is a planetary reducer, the input end of the planetary reducer is connected to a CNC servo motor, and the output end is cocentrically connected to a rotating seat or a shaft that rotates synchronously with the rotating seat. The reduction mechanism may be a worm gear reduction mechanism, the worm is connected to a CNC servo motor, and the worm wheel is cocentrically connected to a rotating seat or a shaft that rotates synchronously with the rotating seat.

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