A yarn feeder for a polyester knitting machine

Abstract

The utility model relates to polyester knitted fabric machine technical field discloses a kind of yarn feeder of polyester knitted fabric machine, including first fixed seat, yarn feeder ring, second fixed seat and yarn guide ring, to solve the problem of difficult replacement of yarn feeder ring and yarn guide ring, the yarn feeder is provided with first quick-change mechanism and second quick-change mechanism, the first quick-change mechanism includes installation base, ball, bevel push block and threaded rod;Through rotating threaded rod drive push block axial movement, utilize the bevel of push block control ball radial lock or release, realize the quick separation of installation base and connecting shaft, to replace yarn feeder ring, the second quick-change mechanism includes spring, clamping block and latch bolt;Yarn guide ring is held by spring drive clamping block, latch bolt is positioned to clamping block;When replacing, latch bolt is pulled out and clamping block is pressed, and yarn guide ring can be released.The utility model is through two kinds of quick-change structure, realizes the quick disassembly of vulnerable parts, easy to operate, significantly shorten maintenance time, improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of polyester knitting machine technology, and in particular to a yarn feeder for a polyester knitting machine. Background Technology

[0002] Polyester knitting machines are widely used in textile production, providing a continuous and stable supply of polyester yarn to the knitting needles via a yarn feeder. The yarn feeder is a key component of the knitting machine, and its performance directly affects the quality of the fabric and production efficiency.

[0003] During the operation of the yarn feeder, the yarn feed ring is the core component that guides the yarn. At high speeds, the polyester yarn experiences continuous and intense friction against the surface of the yarn feed ring. Due to this high-frequency friction, the surface of the yarn feed ring is prone to wear, forming grooves or burrs, making it a consumable part that requires frequent replacement.

[0004] However, in existing technologies, the yarn feed ring is typically fixed to the transmission components using bolts or as an integral structure. When the yarn feed ring wears out and needs replacement, maintenance personnel must stop the machine and use tools to remove multiple fasteners or disassemble complex transmission components to remove the worn yarn feed ring.

[0005] This complex disassembly and assembly method is not only cumbersome to operate, but also time-consuming and labor-intensive. In the pursuit of high-efficiency continuous knitting production, excessive downtime for maintenance severely restricts the overall operating efficiency of the equipment and reduces overall production benefits.

[0006] Therefore, this utility model proposes a yarn feeder for a polyester knitting machine to overcome the shortcomings of the prior art. Utility Model Content

[0007] In view of the problems of complex disassembly and replacement, time-consuming and inconvenient maintenance of the yarn feeder of the polyester knitting machine after the yarn feeding ring is worn in the existing technology, this utility model aims to provide a yarn feeder of polyester knitting machine with improved structure that can effectively solve the above problems.

[0008] This utility model provides a yarn feeder for a polyester knitting machine, including a first fixed base, a motor, a connecting shaft, a mounting protrusion, a yarn feeding ring, a second fixed base, and a yarn guiding ring; the motor is mounted on the first fixed base; the connecting shaft is rotatably mounted on the first fixed base and is connected to the motor for transmission, the mounting protrusion is fixedly provided on the outer wall of the connecting shaft, and the connecting shaft has a hollow part with an end opening; the yarn feeding ring is fitted onto the mounting protrusion and accommodated in the first fixed base; the yarn guiding ring is pluggably mounted on the second fixed base; the yarn feeder of the polyester knitting machine also includes a first quick-change mechanism.

[0009] The first quick-change mechanism includes a mounting base, balls, a push block, and a threaded rod. The mounting base is pluggably mounted within the hollow portion of the connecting shaft, and one end of the mounting base is used to press against the yarn feeding ring to achieve axial positioning of the yarn feeding ring. The balls are radially movably mounted on the side wall of the mounting base and are used to selectively engage with a groove on the inner wall of the connecting shaft to form a locking structure. The push block is axially slidably mounted within the mounting base, and the push block has an inclined surface for pressing against the balls. This inclined surface structure converts the axial movement of the push block into a radial thrust on the balls. The threaded rod is threadedly connected to the mounting base. Rotating the threaded rod can drive the push block to produce precise axial displacement, thereby controlling the radial locking or releasing of the balls.

[0010] Preferably, in order to improve the guiding accuracy and stability during the insertion and removal of the mounting base, a guide rod is also fixedly provided on the mounting convex ring, and the mounting base is slidably fitted with the guide rod.

[0011] Preferably, in order to ensure that the ball can smoothly disengage from the groove on the inner wall of the connecting shaft when unlocking, a groove is provided on the mounting base for the ball to retract, providing a receiving space for the ball and preventing jamming.

[0012] Preferably, the pusher moves axially along the inner wall of the mounting base. This built-in sliding structure makes the overall structure of the first quick-change mechanism more compact and reduces the possibility of external interference.

[0013] Preferably, the yarn feeder of the polyester knitting machine further includes a second quick-change mechanism for quickly replacing the yarn guide ring. The second quick-change mechanism includes a spring mounted in the second fixed seat, a locking block driven by the spring's elastic force to hold the yarn guide ring, and a pin that can be plugged through the locking block. The pin restricts the locking block from retracting in the locked position, forming a double locking mechanism to ensure operational reliability.

[0014] Preferably, the surface of the yarn guide ring is provided with a fixing ring.

[0015] Preferably, in order to achieve unlocking, the locking block is designed to be pressable. By applying external force to press the locking block, the elastic force of the spring can be overcome, thereby squeezing the spring and causing the locking block to retract into the second fixed seat, thus releasing the grip on the yarn guide ring.

[0016] Preferably, in order to achieve a stable and reliable engagement between the locking block and the yarn guide ring, the surface of the yarn guide ring is provided with a locking groove for the locking block to hold. The two work together to effectively prevent the yarn guide ring from accidentally falling off during operation.

[0017] This utility model has the following beneficial effects: 1. This utility model, by setting a first quick-change mechanism, uses a threaded rod to drive the push block to move, and uses the inclined surface of the push block to control the ball bearings to achieve radial locking or release, thereby enabling the mounting base to quickly separate from the connecting shaft. This solves the problems of complex disassembly and replacement of the yarn feeding ring, long time consumption, and inconvenient maintenance in the prior art, and achieves the technical effect of quick disassembly and assembly of the yarn feeding ring and improved replacement efficiency.

[0018] 2. This utility model, by setting a second quick-change mechanism, uses a spring to drive a locking block to hold the yarn guide ring and uses a pin to lock and limit the locking block, which solves the problem of cumbersome yarn guide ring replacement operation in the prior art. It achieves the technical effect of quickly removing the yarn guide ring by pulling out the pin and pressing the locking block, which is simple to operate and quick to replace.

[0019] 3. This utility model provides a quick replacement solution for the two high-frequency wear components, the yarn feeding ring and the yarn guiding ring, by combining the first quick-change mechanism and the second quick-change mechanism. This solves the problem of difficult maintenance of the vulnerable parts of the existing yarn feeder, which leads to long-term equipment downtime. It achieves the technical effects of simplifying the maintenance process, significantly shortening the repair time, and ensuring the continuous production efficiency of the knitting machine. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of a yarn feeder for a polyester knitting machine proposed in this utility model; Figure 2 This is a schematic diagram of the yarn feeding ring part of the yarn feeder of a polyester knitting machine proposed in this utility model. Figure 3 for Figure 2 Enlarged view of point A in the image; Figure 4 This is a schematic diagram of the mounting base of the yarn feeder for a polyester knitting machine according to the present invention.

[0021] Legend: 1. Motor; 2. First fixed seat; 3. First quick-change mechanism; 301. Threaded rod; 302. Yarn feeding ring; 303. Guide rod; 304. Mounting convex ring; 305. Connecting shaft; 306. Push block; 307. Mounting base; 308. Ball bearing; 4. Yarn guiding ring; 5. Second fixed seat; 6. Second quick-change mechanism; 601. Locking block; 602. Spring; 603. Fixing ring; 604. Pin. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0023] Please refer to Figures 1 to 4 This utility model provides a yarn feeder for a polyester knitting machine, which aims to solve the problems of difficulty in replacing the yarn feed ring 302 and yarn guide ring 4 after wear, time-consuming disassembly and assembly, and low maintenance efficiency in the prior art.

[0024] like Figure 1 , Figure 2 and Figure 4 As shown, the yarn feeder of the polyester knitting machine includes a first fixed base 2 and a second fixed base 5. The motor 1 is mounted on the first fixed base 2. The connecting shaft 305 is rotatably mounted on the first fixed base 2 and is connected to the motor 1 for transmission. The outer wall of the connecting shaft 305 is fixedly provided with a mounting protrusion ring 304. The connecting shaft 305 has a hollow part with an end opening. The yarn feeding ring 302 is fitted into the mounting protrusion ring 304 and accommodated in the first fixed base 2. The yarn guiding ring 4 is pluggably mounted on the second fixed base 5.

[0025] The yarn feeder of the polyester knitting machine also includes a first quick-change mechanism 3 for quickly changing the yarn feed ring 302.

[0026] Specifically, such as Figure 1 , Figure 3 and Figure 4 As shown, the first quick-change mechanism 3 includes a mounting base 307, a ball bearing 308, a pusher block 306, and a threaded rod 301. The mounting base 307 is pluggably mounted in the hollow portion of the connecting shaft 305. One end of the mounting base 307 is used to press against the yarn feeding ring 302. The ball bearing 308 is radially movably mounted on the side wall of the mounting base 307. The ball bearing 308 is used to selectively engage with the groove on the inner wall of the connecting shaft 305. The pusher block 306 is axially slidably mounted in the mounting base 307. The pusher block 306 has an inclined surface for pressing against the ball bearing 308. The threaded rod 301 is threadedly connected to the mounting base 307. The threaded rod 301 is used to drive the pusher block 306 to move axially.

[0027] To solve the above-mentioned technical problems, the technical solution of this embodiment also includes a second quick-change mechanism 6, which is used to realize the quick assembly and disassembly of the yarn guide ring 4 from the second fixed seat 5.

[0028] Please refer to the following carefully. Figure 1 and Figure 2The second quick-change mechanism 6 includes a spring 602 installed in the second fixed base 5 and a locking block 601 driven by the elastic force of the spring 602. The locking block 601 can be pressed to squeeze the spring 602 and retract into the second fixed base 5. The surface of the yarn guide ring 4 is provided with a slot for the locking block 601 to hold. In the locked state, the locking block 601 holds the slot of the yarn guide ring 4. The second quick-change mechanism 6 also includes a pin 604, which can be inserted and removed through the locking block 601. The pin 604 is used to restrict the retraction of the locking block 601 in the locked position. As one embodiment, a fixing ring 603 is provided on the surface of the yarn guide ring 4.

[0029] Please refer to the following carefully. Figure 2 , Figure 3 and Figure 4 The structure of the first quick-change mechanism 3 will be further described in detail below: A guide rod 303 is also fixedly installed in the hollow part of the connecting shaft 305. The mounting base 307 is slidably fitted with the guide rod 303. The guide rod 303 provides a stable guide for the insertion and removal of the mounting base 307. The mounting base 307 is provided with a slot for the retraction of the ball 308. When the push block 306 retracts, the ball 308 retracts into the slot. The push block 306 moves axially along the inner wall of the mounting base 307 and contacts the ball 308 through its inclined surface, converting the rotational motion of the threaded rod 301 into an axial thrust, which is applied as a radial locking force on the ball 308.

[0030] Based on the above embodiments, the present invention may further include the following preferred technical solutions: As a preferred embodiment, to improve the stability of the mounting base 307 during insertion and removal, please refer to... Figure 4 The mounting ring 304 is also fixedly provided with a guide rod 303, and the mounting base 307 is slidably fitted with the guide rod 303; As a preferred implementation, to achieve reliable retraction of the ball 308 for unlocking, please refer to... Figure 3 The mounting base 307 is provided with a slot for the ball 308 to retract; In a preferred embodiment, the pusher 306 moves axially along the inner wall of the mounting base 307; As a preferred embodiment, please refer to Figure 2 The fixing ring 603 is set on the surface of the yarn guide ring 4; As a preferred embodiment, for ease of unlocking the yarn guide ring 4, please refer to... Figure 2 The locking block 601 can be pressed to compress the spring 602 and retract into the second fixing seat 5; In a preferred embodiment, in order to reliably hold the card block 601, the surface of the yarn guide ring 4 is provided with a card slot for holding the card block 601.

[0031] Working principle: When yarn feeding is required, motor 1 is started. Motor 1 drives the connecting shaft 305 to rotate. The connecting shaft 305 drives the yarn feeding ring 302 to rotate through the mounting convex ring 304, thus feeding yarn for the polyester knitting machine. During the yarn feeding process, when the yarn feeding ring 302 needs to be replaced due to surface wear caused by prolonged yarn feeding, the locking of the first quick-change mechanism 3 needs to be released. At this time, loosen the threaded rod 301. The threaded rod 301 drives the push block 306 to move along the inner wall of the mounting base 307. The inclined surface of the push block 306 releases the pressure on the ball 308, causing the ball 308 to disengage from the slot in the connecting shaft 305 and retract into the slot in the mounting base 307. At this time, the locking between the mounting base 307 and the connecting shaft 305 is released. The threaded rod 301, together with the mounting base 307, is taken out from the hollow part of the connecting shaft 305 along the guide rod 303. After the mounting base 307 is taken out, its pressure on the yarn feeding ring 302 is released. At this time, the worn yarn feeding ring 302 can be taken out along the mounting protrusion ring 304, completing the replacement of the yarn feeding ring 302. When the yarn guide ring 4 wears out during the yarn guiding process and needs to be replaced, the yarn guide ring 4 needs to be removed from the second fixed seat 5. At this time, the locking of the yarn guide ring 4 by the second quick change mechanism 6 is released. The surface of the yarn guide ring 4 is provided with a fixing ring 603. During operation, pull out the pin 604 to release the position restriction of the pin 604 on the locking block 601. Then press the locking block 601, which in turn squeezes the spring 602, causing it to retract into the second fixed seat 5. Finally, the yarn guide ring 4 can be removed from the second fixed seat 5 for replacement.

Claims

1. A yarn feeder for a polyester knitting machine, comprising: A first fixed base (2) and a motor (1), wherein the motor (1) is mounted on the first fixed base (2); a connecting shaft (305), wherein the connecting shaft (305) is rotatably mounted on the first fixed base (2) and is connected to the motor (1) in a transmission manner, wherein the outer wall of the connecting shaft (305) is fixedly provided with a mounting protrusion (304), and the connecting shaft (305) is provided with a hollow part with an end opening; a yarn feeding ring (302), wherein the yarn feeding ring (302) is fitted onto the mounting protrusion (304) and accommodated in the first fixed base (2); a second fixed base (5); and Yarn guide ring (4), which is detachably mounted on the second fixed seat (5); The yarn feeder is characterized in that it further includes a first quick-change mechanism (3); the first quick-change mechanism (3) includes: a mounting base (307), which is pluggably mounted in the hollow part of the connecting shaft (305), and one end of the mounting base (307) is used to press against the yarn feeding ring (302). A ball (308) is radially movably mounted on the side wall of the mounting base (307) and is used to selectively engage with a groove on the inner wall of the connecting shaft (305); a push block (306) is axially slidably mounted in the mounting base (307) and has an inclined surface for pressing against the ball (308); and a threaded rod (301) is threadedly connected to the mounting base (307) and is used to drive the push block (306) to move axially.

2. The yarn feeder of the polyester knitted fabric machine according to claim 1, wherein The mounting ring (304) is also fixedly provided with a guide rod (303), and the mounting base (307) is slidably fitted with the guide rod (303).

3. The yarn feeder of the polyester knitting machine according to claim 1, characterized in that, The mounting base (307) is provided with a groove for the ball (308) to retract.

4. The yarn feeder of the polyester knitting machine according to claim 1, characterized in that, The pusher (306) moves axially along the inner wall of the mounting base (307).

5. The yarn feeder of the polyester knitting machine according to claim 1, characterized in that, The yarn feeder also includes a second quick-change mechanism (6), which includes: A spring (602) is installed inside the second fixing seat (5); A locking block (601), said locking block (601) being driven by the elastic force of said spring (602) to hold the yarn guide ring (4); and A pin (604) is inserted and detachably passed through the latch (601) and is used to restrict the retraction of the latch (601) in the locked position.

6. The yarn feeder of the polyester knitting machine according to claim 5, characterized in that, A retaining ring (603) is disposed on the surface of the yarn guide ring (4).

7. The yarn feeder of the polyester knitting machine according to claim 5, characterized in that, The latch (601) can be pressed to compress the spring (602) and retract into the second retaining seat (5).

8. The yarn feeder of the polyester knitting machine according to claim 5, characterized in that, The surface of the yarn guide ring (4) is provided with a slot for the locking block (601) to hold.

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