Yarn tension adjusting device of knitting machine

Abstract

The utility model relates to the technical field of knitting machines, and discloses a yarn tension adjusting device of a knitting machine, which comprises an L-shaped plate, an adjusting mechanism and a moving mechanism are arranged on the top surface of the L-shaped plate, and the adjusting mechanism comprises a mounting component and an adjusting component. By arranging the adjusting mechanism, a first motor is arranged to drive a first threaded rod to rotate, so that a first bevel gear is engaged with a second bevel gear, a first reciprocating threaded rod is driven to rotate, a first U-shaped plate is made to move, and the tension is effectively adjusted according to different types of yarns; the requirements of different yarn varieties and fabric structures are met; a moving mechanism is arranged, a double-shaft motor is arranged to drive a belt wheel to rotate, so that second reciprocating threaded rods on the two sides are driven to rotate, second U-shaped plates on the two sides are driven to move up and down, it is ensured that yarn stably flows in the knitting process, the uneven coil structure is reduced, and the fabric surface can be smoother; and the fabric weaving quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of knitting machine technology, specifically to a yarn tension adjustment device for a knitting machine. Background Technology

[0002] A knitting machine is an industrial device used to mechanically interweave yarns or other fibrous materials into fabrics. It forms a fabric structure by interweaving the warp and weft yarns according to their regularity.

[0003] Chinese patent discloses a yarn tension adjusting device (publication number: CN222743770U), including an operating table. A pressure plate is provided at the upper end of the first connecting rod, and a locking tip is provided at the upper end of the second connecting rod. The gear matches the locking tip. A spiral spring is provided on the surface of the gear near the second roller. The ends of two spiral springs away from the gear are connected to the second roller. Multiple fixing rods are provided on the surface of the second roller, and each fixing rod has a V-shaped notch at its upper end. This invention first draws the yarn under the pressure plate, then presses the yarn onto the left first roller, then passes the yarn under the right first roller, and finally presses the yarn into the V-shaped notch of the fixing rod. Then, the gear is rotated to engage the second connecting rod with the gear. Under the action of the second spring, the gear is firmly locked in place; there is no threading operation, reducing operation time.

[0004] However, the following drawbacks still exist: roving requires greater tension to prevent loosening, while fine yarn requires gentler handling to prevent breakage. If the equipment cannot adjust the tension, it may cause fine yarn breakage, requiring machine shutdown, or roving to become loose, affecting the quality of the finished textile product. Fine yarn usually requires lower processing speeds to reduce wear, while roving can withstand higher speeds. However, a fixed speed may lead to frequent yarn breakage during fine yarn processing or low efficiency in roving processing.

[0005] To address this issue, we propose a yarn tension adjustment device for knitting machines. Utility Model Content

[0006] The purpose of this invention is to provide a yarn tension adjustment device for a knitting machine to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A yarn tension adjustment device for a knitting machine includes a knitting machine body, with multiple sets of L-shaped plates installed on the top of the knitting machine body, and an adjustment mechanism and a moving mechanism provided on the top surface of the L-shaped plates;

[0009] The adjustment mechanism includes a mounting component and an adjustment component, with the mounting component located on the side of the adjustment component;

[0010] The mounting assembly includes two first support frames, each with a feed roller and a discharge roller threadedly mounted on its side. A base is fixedly mounted on the bottom surface of the L-shaped plate, and two second support frames are fixedly mounted on the top surface of the L-shaped plate. Each of the two second support frames has a movable roller rotatably mounted on its outer surface via bearings. The feed roller is used to hold the yarn, while the movable roller assists in moving the yarn.

[0011] The adjustment assembly includes a first motor, the side of which is fixedly connected to the side of an L-shaped plate. The top surface of the L-shaped plate has a first through groove and a second through groove running from right to left. A first reciprocating threaded rod is rotatably provided on the inner wall of the first through groove through a bearing seat. The outer surface of the first reciprocating threaded rod penetrates the inner wall of the first through groove and the inner wall of the second through groove and extends into the second through groove. The end face of the output rod of the first motor is fixedly fitted with the first threaded rod. The outer surface of the first threaded rod penetrates the side of the L-shaped plate and the inner wall of the second through groove and extends into the second through groove. The knitting machine body is a double-sided circular knitting machine structure, and its adjustment device is installed at the upper yarn roller.

[0012] A further improvement is that the moving mechanism includes a dual-axis motor, the bottom surface of which is fixedly connected to the top surface of the L-shaped plate. Two pulleys are fitted onto the upper end of the output rod of the dual-axis motor. The upper end of the output rod is fixedly connected to the inner wall of the pulley located on the left side. Two third through slots are formed through the side of the L-shaped plate. The inner walls of the two third through slots are respectively provided with second reciprocating threaded rods via bearing seats. These second reciprocating threaded rods drive the movement of the second U-shaped plates on both sides. The detachable bolt design facilitates replacement and maintenance.

[0013] A further improvement is that a first bevel gear is fixedly sleeved on the front end face of the first threaded rod, and a second bevel gear is fixedly sleeved on the left end face of the first reciprocating threaded rod. The side of the first bevel gear meshes with the second bevel gear. A first slider is threadedly sleeved on the outer surface of the first reciprocating threaded rod. A first U-shaped plate is fixedly installed on the top surface of the first slider. A fourth through groove is opened through the side of the first U-shaped plate. A first hydraulic rod is fixedly installed on the inner wall of each of the two fourth through grooves. By setting the first hydraulic rod to move up and down, the tension of the yarn can be effectively adjusted.

[0014] A further improvement is that a movable plate is slidably arranged on the inner wall of the two fourth channels, the lower end face of the two first hydraulic rod output rods is fixedly connected to the top surface of the movable plate, and a first extrusion roller is rotatably arranged on the top surface of the movable plate through a bearing seat.

[0015] A further improvement is that the outer surfaces of the two second reciprocating threaded rods respectively penetrate the inner top surface of the L-shaped plate and extend to the top surface of the L-shaped plate. The upper end face of the second reciprocating threaded rod on the left is fixedly connected to the lower end face of the output rod of the dual-axis motor, and the upper end face of the second reciprocating threaded rod on the right is fixedly connected to the inner wall of the pulley on the right. By setting the second reciprocating threaded rods, the second U-shaped plate is driven to move up and down.

[0016] A further improvement is that a third slider is threaded onto the outer surface of each of the two second reciprocating threaded rods, a support block is fixedly installed on the side of each of the two third sliders, a second U-shaped plate is fixedly installed on the side of each of the two support blocks by bolts, and a second extrusion roller is rotatably mounted on the inner side of each of the two second U-shaped plates by bearing seats.

[0017] Compared with the prior art, the beneficial effects of this utility model are: the yarn tension adjustment device of the knitting machine, by setting an adjustment mechanism, by setting a first motor to drive the first threaded rod to rotate, so that the first bevel gear and the second bevel gear mesh, thereby driving the first reciprocating threaded rod to rotate, so that the first U-shaped plate moves, and effectively adjusts the tension according to different yarn types, thereby adapting to the needs of different yarn varieties and fabric structures, and improving the reliability and stability of yarn tension adjustment;

[0018] By setting up a moving mechanism, a dual-axis motor drives a pulley to rotate, which in turn drives the second reciprocating threaded rods on both sides to rotate, thereby moving the second U-shaped plates on both sides up and down. This ensures stable yarn flow during the weaving process and reduces unevenness in the coil structure. At the same time, a first hydraulic rod moves the first squeezing roller up and down, thereby adjusting the yarn transport speed of the knitting machine according to the value displayed above the tension sensor. Unlike the fixed speed of existing knitting machines, this allows for a smoother fabric surface when using yarns of different thicknesses, thus improving the quality of the fabric weaving. Attached Figure Description

[0019] Figure 1 This is a front view of the structure of this utility model;

[0020] Figure 2 This is a side view of the structure of this utility model;

[0021] Figure 3 This is a side sectional view of the structure of this utility model;

[0022] Figure 4 This is a partial sectional view of the side of the structure of this utility model;

[0023] Figure 5 This is a partial front view of the structure of this utility model;

[0024] Figure 6 This is a top view of the structure of this utility model.

[0025] In the diagram: 1. L-shaped plate; 2. Adjustment mechanism; 201. First support frame; 202. Feed roller; 203. Second support frame; 204. Moving roller; 205. First motor; 206. First reciprocating threaded rod; 3. Moving mechanism; 301. Dual-axis motor; 302. Pulley; 303. Second reciprocating threaded rod; 304. First bevel gear; 305. First U-shaped plate; 306. First hydraulic rod; 307. First extrusion roller; 308. Second U-shaped plate; 309. Second extrusion roller; 4. Knitting machine body. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-6 This utility model provides a technical solution: a yarn tension adjustment device for a knitting machine, including a knitting machine body 4, with multiple sets of L-shaped plates 1 installed on the top of the knitting machine body 4, and an adjustment mechanism 2 and a moving mechanism 3 provided on the top surface of the L-shaped plates 1;

[0028] The adjustment mechanism 2 includes a mounting component and an adjustment component, with the mounting component located on the side of the adjustment component;

[0029] The mounting assembly includes two first support frames 201, each with a feed roller 202 and a discharge roller mounted on its side via threads. A base is fixedly mounted on the bottom surface of the L-shaped plate 1, and two second support frames 203 are fixedly mounted on the top surface of the L-shaped plate 1. Movable rollers 204 are rotatably mounted on the outer surfaces of the two second support frames 203 via bearings.

[0030] The adjustment assembly includes a first motor 205, the side of which is fixedly connected to the side of the L-shaped plate 1. The top surface of the L-shaped plate 1 has a first through groove and a second through groove running from right to left. The inner wall of the first through groove is rotatably provided with a first reciprocating threaded rod 206 through a bearing seat. The outer surface of the first reciprocating threaded rod 206 penetrates the inner wall of the first through groove and the inner wall of the second through groove and extends into the interior of the second through groove. The output rod end face of the first motor 205 is fixedly fitted with the first threaded rod. The outer surface of the first threaded rod penetrates the side of the L-shaped plate 1 and the inner wall of the second through groove and extends into the interior of the second through groove.

[0031] The moving mechanism 3 includes a dual-axis motor 301. The bottom surface of the dual-axis motor 301 is fixedly connected to the top surface of the L-shaped plate 1. A pulley 302 is sleeved on the upper end surface of the output rod of the dual-axis motor 301. There are two pulleys 302. The upper end surface of the output rod of the dual-axis motor 301 is fixedly connected to the inner wall of the pulley 302 located on the left side. Two third through slots are opened through the side of the L-shaped plate 1. The inner walls of the two third through slots are respectively provided with second reciprocating threaded rods 303 through bearing seats.

[0032] A first bevel gear 304 is fixedly sleeved on the front end face of the first threaded rod, and a second bevel gear is fixedly sleeved on the left end face of the first reciprocating threaded rod 206. The side of the first bevel gear 304 meshes with the second bevel gear. A first slider is threadedly sleeved on the outer surface of the first reciprocating threaded rod 206. A first U-shaped plate 305 is fixedly installed on the top surface of the first slider. A fourth through groove is opened through the side of the first U-shaped plate 305. A first hydraulic rod 306 is fixedly installed on the inner wall of both fourth through grooves.

[0033] The inner walls of the two fourth channels are slidably equipped with movable plates. The lower ends of the output rods of the two first hydraulic rods 306 are fixedly connected to the top surface of the movable plates. The top surface of the movable plates is rotatably equipped with first extrusion rollers 307 through bearing seats.

[0034] The outer surfaces of the two second reciprocating threaded rods 303 penetrate the inner top surface of the L-shaped plate 1 and extend to the top surface of the L-shaped plate 1. The upper end face of the second reciprocating threaded rod 303 on the left is fixedly connected to the lower end face of the output rod of the dual-axis motor 301, and the upper end face of the second reciprocating threaded rod 303 on the right is fixedly connected to the inner wall of the pulley 302 on the right.

[0035] The outer surfaces of the two second reciprocating threaded rods 303 are threaded with third sliders, and the sides of the two third sliders are fixedly mounted with support blocks. The sides of the two support blocks are fixedly mounted with second U-shaped plates 308 by bolts. The inner sides of the two second U-shaped plates 308 are rotatably mounted with second extrusion rollers 309 through bearing seats.

[0036] In use, the yarn is placed in the first support frame 201 by setting an adjustment mechanism, so that the yarn enters from the left and exits from the right into the knitting machine. It is then installed by the moving roller 204. At the same time, the first motor 205 is started to drive the first threaded rod to rotate, so that the first bevel gear 304 meshes with the second bevel gear. The second bevel gear drives the first reciprocating threaded rod 206 to rotate. The appropriate value of the tension sensor display device at the upper end is observed, and the tension is adjusted according to the width of different yarn types. The first slider moves the first U-shaped plate 305 to the appropriate position. At the same time, the first hydraulic rod 306 is started to move the moving plate, and the first squeeze roller 307 moves up and down to adjust the yarn strength. At the same time, the dual-axis motor 301 is started, so that the pulley 302 drives the second reciprocating threaded rods 303 on both sides to rotate. At the same time, the second U-shaped plates 308 on both sides move, and the second squeeze roller 309 moves up and down to adjust the yarn tension.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A yarn tension adjusting device for a knitting machine, comprising an L-shaped plate (1), characterized in that: The top surface of the L-shaped plate (1) is provided with an adjustment mechanism (2) and a moving mechanism (3); The adjustment mechanism (2) includes a mounting component and an adjustment component, with the mounting component located on the side of the adjustment component; The mounting assembly includes two first support frames (201), each of which has a feed roller (202) and a discharge roller mounted on its side via threads. A base is fixedly mounted on the bottom surface of the L-shaped plate (1), and two second support frames (203) are fixedly mounted on the top surface of the L-shaped plate (1). Movable rollers (204) are rotatably mounted on the outer surfaces of the two second support frames (203) via bearings. The adjustment assembly includes a first motor (205), the side of the first motor (205) is fixedly connected to the side of the L-shaped plate (1), the top surface of the L-shaped plate (1) is provided with a first through groove and a second through groove from right to left, the inner wall of the first through groove is rotatably provided with a first reciprocating threaded rod (206) through a bearing seat, the outer surface of the first reciprocating threaded rod (206) penetrates the inner wall of the first through groove and the inner wall of the second through groove and extends into the interior of the second through groove, the output rod end face of the first motor (205) is fixedly sleeved with the first threaded rod, the outer surface of the first threaded rod penetrates the side of the L-shaped plate (1) and the inner wall of the second through groove and extends into the interior of the second through groove.

2. The yarn tension adjusting device for a knitting machine according to claim 1, characterized in that: The moving mechanism (3) includes a dual-axis motor (301), the bottom surface of which is fixedly connected to the top surface of the L-shaped plate (1), and a pulley (302) is sleeved on the upper end surface of the output rod of the dual-axis motor (301). There are two pulleys (302). The upper end surface of the output rod of the dual-axis motor (301) is fixedly connected to the inner wall of the pulley (302) located on the left side. Two third through slots are opened through the side of the L-shaped plate (1). The inner walls of the two third through slots are respectively provided with second reciprocating threaded rods (303) through bearing seats.

3. The yarn tension adjusting device for a knitting machine according to claim 2, characterized in that: A first bevel gear (304) is fixedly sleeved on the front end face of the first threaded rod, and a second bevel gear is fixedly sleeved on the left end face of the first reciprocating threaded rod (206). The side of the first bevel gear (304) meshes with the second bevel gear. A first slider is threadedly sleeved on the outer surface of the first reciprocating threaded rod (206). A first U-shaped plate (305) is fixedly installed on the top surface of the first slider. A fourth through groove is opened through the side of the first U-shaped plate (305). A tension sensor (300) is fixedly installed on the side of the first U-shaped plate (305). A first hydraulic rod (306) is fixedly installed on the inner wall of both fourth through grooves.

4. The yarn tension adjusting device for a knitting machine according to claim 3, characterized in that: The inner walls of the two fourth channels are slidably provided with movable plates, the lower end faces of the output rods of the two first hydraulic rods (306) are fixedly connected to the top surface of the movable plates, and the top surface of the movable plates is rotatably provided with first extrusion rollers (307) through bearing seats.

5. The yarn tension adjusting device for a knitting machine according to claim 2, characterized in that: The outer surfaces of the two second reciprocating threaded rods (303) penetrate the inner top surface of the L-shaped plate (1) and extend to the top surface of the L-shaped plate (1). The upper end face of the second reciprocating threaded rod (303) on the left is fixedly connected to the lower end face of the output rod of the dual-axis motor (301), and the upper end face of the second reciprocating threaded rod (303) on the right is fixedly connected to the inner wall of the pulley (302) on the right.

6. The yarn tension adjusting device for a knitting machine according to claim 5, characterized in that: The outer surfaces of the two second reciprocating threaded rods (303) are threaded with third sliders, and the sides of the two third sliders are fixedly mounted with support blocks. The sides of the two support blocks are fixedly mounted with second U-shaped plates (308) by bolts. The inner sides of the two second U-shaped plates (308) are rotatably mounted with second extrusion rollers (309) through bearing seats.

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