Jacquard mechanism of knitting machine

Abstract

The utility model belongs to the technical field of knitting machines, and particularly relates to a jacquard mechanism of a knitting machine, which comprises a support frame, a fixed seat is mounted on the support frame, a plurality of groups of rotating rods are rotatably mounted on the fixed seat, a fixed disc is mounted on the fixed seat, the fixed disc is sleeved on the periphery of the rotating rods, and the rotating rods are fixed on the fixed disc. A square groove is formed in the inner wall of the fixing disc, a friction block is assembled in the square groove, a rod hole is formed in the fixing disc, a screw is rotationally installed in the rod hole through threads, one end of the screw is rotationally connected with the friction block, and the friction block is driven by the screw to move horizontally so that the friction block can be attached to a rotating rod. When the yarn bobbin rotates to drive the rotating rod to rotate, the friction force on the friction block is in direct proportion to the force applied to the rotating rod by the friction block, so that the force applied to the rotating rod by the friction block is adjusted to adjust the friction force, the feeding speed and the tension of the yarn bobbin are adjusted, and the regularity of jacquard weave is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of knitting machines, in particular to a jacquard mechanism of a knitting machine. Background Art

[0002] A knitting machine is a machine used to make fabrics. It creates fabrics by interweaving yarns or cotton threads in the vertical and horizontal directions through the movement of needle hooks. The patterns on the fabric are usually formed in two ways, one is printing and the other is jacquard. Jacquard is a concave and convex pattern composed of interlaced warp and weft threads. It has a strong three-dimensional effect and good pattern durability. In the jacquard process, a jacquard mechanism is required.

[0003] A Chinese patent with authorization publication number CN 219385510 U discloses a jacquard mechanism for a knitting machine, comprising a cam unit, a needle cam, knitting needles, and a needle disc. The cam unit has reset grooves on both sides of its bottom surface, with a second spring and a slide bar disposed within the reset grooves. The needle cam is mounted below the cam unit, and a second slider is mounted on its right side. The knitting needle is horizontally positioned between the second slider and the needle disc, with the left side of the needle connected in sequence to a jacquard plate and a control plate. The utility model employs the jacquard mechanism of a knitting machine with the above structure. The needle cam and the second slider drive the knitting needle to reset, avoiding wear when the needle resets independently. Furthermore, the jacquard plate and the knitting needle have arc-shaped connection points, dispersing wear points. The descending height of the first slider determines the needle's needle-out distance, enabling the jacquard machine to perform more knitting movements.

[0004] The jacquard mechanism of the existing knitting machine cannot control the feeding speed and tension of the yarn when weaving the jacquard pattern, which easily causes excessive yarn feeding to affect the neatness of the jacquard, resulting in poor jacquard neatness; therefore, a jacquard mechanism of a knitting machine is proposed to address the above problem. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and solve the problems existing in the prior art, the utility model provides a jacquard mechanism of a knitting machine.

[0006] The technical solution adopted by the utility model to solve its technical problems is a jacquard mechanism of a knitting machine, comprising a support frame, a fixed seat is installed on the support frame, a plurality of rotating rods are rotatably installed on the fixed seat, a fixed disk is installed on the fixed seat, the fixed disk is sleeved on the outer periphery of the rotating rod, a square groove is opened on the inner wall of the fixed disk, a friction block is assembled in the square groove, a rod hole is opened on the fixed disk, a screw is installed in the rod hole through thread rotation, one end of the screw is rotatably connected to the friction block, a first knob is installed on the other end of the screw, a circular groove is opened on the inner wall of the rotating rod, a screw is installed on the rotating rod through thread rotation, a second knob is installed on the screw, and the screw is provided with a plurality of rotating rods. A protrusion is installed on the bottom side of the screw rod, and two groups of circular holes are symmetrically opened on the side wall of the rotating rod. A positioning rod is assembled in the circular hole, and a limit plate is installed on the positioning rod. A spring is installed on the limit plate, and the other end of the spring is fixedly connected to the inner wall of the circular groove. The spring is sleeved on the periphery of the positioning rod and rotated by the screw rod. The screw drives the friction block to move horizontally, so that the friction block is in contact with the rotating rod. When the yarn bobbin rotates and drives the rotating rod to rotate, the friction force on the friction block is proportional to the magnitude of the force exerted by the friction block on the rotating rod. Therefore, the force exerted by the friction block on the rotating rod is adjusted to adjust the magnitude of the friction force, thereby realizing the adjustment of the feeding speed and tension of the yarn bobbin, which is beneficial to improving the uniformity of the jacquard.

[0007] Preferably, a base is installed on the support frame, a guide plate is installed on the base, a slide groove is provided on the guide plate, a slider is installed in the slide groove, a machine head is installed on the slider, a jacquard moving rod is installed inside the machine head, a handle is installed on the machine head, a needle bed is installed on the base, a plurality of sets of needle grooves are provided on the needle bed, organic needles are installed in the needle grooves, a local jacquard cam is placed on the needle bed, a buckle is installed on the bottom side of the local jacquard cam, by pushing the required needles to slide forward, the needles are exposed from the needle bed, and then the local jacquard cam is buckled on the needle grooves of these needles, and then the yarn end is installed on the machine head, and the machine head is pushed to slide back and forth. The needle legs of the needles can move according to the route designed by the local jacquard cam. This movement can realize the change of patterns and designs, realize the weaving of jacquard patterns, and is beneficial to improving jacquard efficiency.

[0008] The utility model is beneficial in that:

[0009] 1. The utility model drives the friction block to move horizontally through the screw, so that the friction block is in contact with the rotating rod. When the yarn bobbin rotates and drives the rotating rod to rotate, the friction force on the friction block is proportional to the magnitude of the force applied by the friction block to the rotating rod. Therefore, by adjusting the force applied by the friction block to the rotating rod, the magnitude of the friction force is adjusted, thereby realizing the adjustment of the yarn bobbin feed speed and tension, which is beneficial to improving the uniformity of the jacquard.

[0010] 2. The utility model pushes the required needles to slide forward, the needles are exposed from the needle bed, and then the local jacquard cam is buckled on the needle grooves of these needles. Then the yarn end is installed on the machine head, and the machine head is pushed to slide back and forth. The needle legs of the needles can move according to the route designed by the local jacquard cam. This movement can realize the change of patterns and designs, realize the weaving of jacquard patterns, and is beneficial to improving jacquard efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0012] Figure 1 It is a schematic diagram of a first-person perspective three-dimensional structure;

[0013] Figure 2 It is a schematic diagram of the three-dimensional structure of the fixed disk;

[0014] Figure 3 Schematic diagram of the three-dimensional internal structure of the rotating rod;

[0015] Figure 4 Schematic diagram of the three-dimensional structure of the needle bed;

[0016] Figure 5 It is a schematic diagram of the three-dimensional structure of the local jacquard cam.

[0017] In the figure: 1. Support frame; 2. Fixed seat; 3. Rotating rod; 4. Fixed plate; 5. Friction block; 6. Screw; 7. First knob; 8. Round groove; 9. Screw; 10. Second knob; 11. Bump; 12. Round hole; 13. Positioning rod; 14. Spring; 15. Base; 16. Guide plate; 17. Slide; 18. Machine head; 19. Handle; 20. Needle bed; 21. Needle groove; 22. Needle; 23. Partial jacquard cam; 24. Buckle; 25. Limit plate. DETAILED DESCRIPTION

[0018] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See also Figure 1-5As shown, a jacquard mechanism of a knitting machine includes a support frame 1, a fixed base 2 is installed on the support frame 1, and multiple groups of rotating rods 3 are rotatably installed on the fixed base 2. A fixed disk 4 is installed on the fixed base 2, and the fixed disk 4 is sleeved on the outer periphery of the rotating rod 3. A square groove is opened on the inner wall of the fixed disk 4, and a friction block 5 is assembled in the square groove. A rod hole is opened on the fixed disk 4, and a screw 6 is rotatably installed in the rod hole through a thread. One end of the screw 6 is rotatably connected to the friction block 5, and the other end of the screw 6 is installed with a first knob 7. A circular groove 8 is provided on the inner wall of the rod 3. A screw rod 9 is installed on the rotating rod 3 by threaded rotation. A second knob 10 is installed on the screw rod 9. A protrusion 11 is installed on the bottom side of the screw rod 9. Two sets of circular holes 12 are symmetrically provided on the side wall of the rotating rod 3. A positioning rod 13 is assembled in the circular hole 12. A limit plate 25 is installed on the positioning rod 13. A spring 14 is installed on the limit plate 25. The other end of the spring 14 is fixedly connected to the inner wall of the circular groove 8. The spring 14 is sleeved on the periphery of the positioning rod 13. A base 15 is installed on the support frame 1 A guide plate 16 is installed on the base 15, and a slide 17 is provided on the guide plate 16. A slider is installed in the slide 17, and a machine head 18 is installed on the slider. A jacquard moving rod is installed inside the machine head 18, and a handle 19 is installed on the machine head 18. A needle bed 20 is installed on the base 15, and a plurality of needle grooves 21 are provided on the needle bed 20. The needle grooves 21 are equipped with organic needles 22. A local jacquard cam 23 is placed on the needle bed 20, and a buckle 24 is installed on the bottom side of the local jacquard cam 23; when working, the existing knitting When the jacquard mechanism of the machine is weaving a jacquard pattern, it is unable to control the feeding speed and tension of the yarn, which may easily lead to excessive yarn feeding affecting the neatness of the jacquard, resulting in poor uniformity of the jacquard. By pushing the required needles 22 forward, the needles 22 are exposed from the needle bed 20, and then the local jacquard cams 23 are buckled on the needle grooves 21 of these needles 22. The local jacquard cams 23 are installed behind the needles 22. The design and installation position of the local jacquard cams 23 determine the shape and position of the jacquard pattern.

[0020] Then, place the yarn to be used on the outer side of the rotating rod 3, turn the second knob 10, drive the screw rod 9 to rotate, the screw rod 9 drives the protrusion 11 to move downward, and the protrusion 11 pushes the two sets of positioning rods 13 to move outward from the rotating rod 3 until the two sets of positioning rods 13 rest on the inner wall of the yarn bobbin, thus fixing the yarn bobbin and the rotating rod 3;

[0021] Then, by turning the first knob 7, the screw 6 is driven to rotate, and the screw 6 drives the friction block 5 to move horizontally, so that the friction block 5 is in contact with the rotating rod 3. When the yarn bobbin rotates and drives the rotating rod 3 to rotate, the friction force on the friction block 5 is proportional to the magnitude of the force exerted by the friction block 5 on the rotating rod 3. Therefore, by adjusting the force exerted by the friction block 5 on the rotating rod 3, the magnitude of the friction force is adjusted, thereby realizing the adjustment of the feeding speed and tension of the yarn bobbin;

[0022] Then install the yarn end on the machine head 18, push the handle 19, drive the machine head 18 to slide horizontally to the left, and then slide to the right, pushing the machine head 18 to slide back and forth. During this process, the machine head 18 pulls the yarn to move, and through the control of the jacquard moving rod of the machine head 18, the needle legs of the needle 22 can move according to the route designed by the local jacquard cam 23. This movement can realize the change of patterns and designs, and realize the weaving of jacquard patterns. This structure can control the feed speed and tension of the yarn, which is beneficial to improve the uniformity of the jacquard.

[0023] Working principle: the jacquard mechanism of the existing knitting machine cannot control the feeding speed and tension of the yarn when weaving the jacquard pattern, and it is easy for the yarn to be fed too much and affect the neatness of the jacquard, resulting in poor neatness of the jacquard. By pushing the required needle 22 to slide forward, the needle 22 is exposed from the needle bed 20, and then the local jacquard cam 23 is buckled on the needle groove 21 of these needles 22. The local jacquard cam 23 is installed behind the needle retreat of the needle 22, and the design and installation position of the local jacquard cam 23 determines the shape and position of the jacquard pattern; then the yarn to be used is placed on the periphery of the rotating rod 3, and the second knob 10 is turned to drive the screw rod 9 to rotate. The screw rod 9 drives the protrusion 11 to move downward, and the protrusion 11 pushes the two sets of positioning rods 13 to move outside the rotating rod 3 until the two sets of positioning rods 13 rest on the inner wall of the yarn tube, thereby achieving the fixation of the yarn tube and the rotating rod 3; then the first knob 7 is turned to drive the screw 6 rotates, and the screw 6 drives the friction block 5 to move horizontally, so that the friction block 5 is in contact with the rotating rod 3. When the yarn tube rotates and drives the rotating rod 3 to rotate, the friction force on the friction block 5 is proportional to the magnitude of the force exerted by the friction block 5 on the rotating rod 3. Therefore, the force exerted by the friction block 5 on the rotating rod 3 is adjusted to adjust the magnitude of the friction force, thereby realizing the adjustment of the feeding speed and tension of the yarn tube; then the yarn end is installed on the machine head 18, and the handle 19 is pushed to drive the machine head 18 to slide horizontally to the left, and then to the right, pushing the machine head 18 to slide back and forth. During this process, the machine head 18 pulls the yarn to move, and through the control of the jacquard moving rod of the machine head 18, the needle legs of the needles 22 can move according to the route designed by the local jacquard cam 23. This movement can realize the change of patterns and designs, and realizes the weaving of jacquard patterns. This structure can control the feeding speed and tension of the yarn, which is beneficial to improving the uniformity of the jacquard.

[0024] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A jacquard mechanism of a knitting machine, characterized in that: The invention comprises a support frame (1), a fixed seat (2) is installed on the support frame (1), a plurality of rotating rods (3) are rotatably installed on the fixed seat (2), a fixed disk (4) is installed on the fixed seat (2), the fixed disk (4) is sleeved on the outer periphery of the rotating rod (3), a square groove is provided on the inner wall of the fixed disk (4), a friction block (5) is installed in the square groove, a rod hole is provided on the fixed disk (4), a screw (6) is rotatably installed in the rod hole through a thread, one end of the screw (6) is rotatably connected to the friction block (5) The screw rod (6) is connected to the rotating rod (3) by a rotating mechanism, wherein the other end of the screw rod (6) is provided with a first knob (7), the inner wall of the rotating rod (3) is provided with a circular groove (8), the rotating rod (3) is provided with a screw rod (9) which is rotated by a thread, the screw rod (9) is provided with a second knob (10), the bottom side of the screw rod (9) is provided with a protrusion (11), the side wall of the rotating rod (3) is provided with two groups of circular holes (12) which are symmetrically provided, the circular holes (12) are provided with positioning rods (13), and the positioning rods (13) are provided with a limiting plate (25).

2. The jacquard mechanism of a knitting machine according to claim 1, characterized in that: A spring (14) is installed on the limiting plate (25), and the other end of the spring (14) is fixedly connected to the inner wall of the circular groove (8). The spring (14) is sleeved on the periphery of the positioning rod (13).

3. The jacquard mechanism of a knitting machine according to claim 1, characterized in that: A base (15) is mounted on the support frame (1), a guide plate (16) is mounted on the base (15), and a slide groove (17) is provided on the guide plate (16).

4. The jacquard mechanism of a knitting machine according to claim 3, characterized in that: A slider is installed in the slide groove (17), a machine head (18) is installed on the slider, a jacquard moving rod is installed inside the machine head (18), and a handle (19) is installed on the machine head (18).

5. The jacquard mechanism of a knitting machine according to claim 3, characterized in that: A needle bed (20) is mounted on the base (15), and a plurality of needle slots (21) are provided on the needle bed (20), wherein organic needles (22) are assembled in the needle slots (21).

6. The jacquard mechanism of a knitting machine according to claim 5, characterized in that: A local jacquard cam (23) is placed on the needle bed (20), and a buckle (24) is installed on the bottom side of the local jacquard cam (23).

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