A round knife adjusting device for a chenille machine

Abstract

The utility model relates to a kind of round knife adjusting device for chenille machine, including tool holder and fixed shaft, fixed shaft is integrally formed on the tool holder, circular blade, pressing plate, connecting rod and lock nut are sequentially sleeved on the fixed shaft, the outer edge of the circular blade is equipped with annular arc blade, the end face of the circular blade is circumferentially distributed with several pinholes, the tool holder is equipped with ejector pin module corresponding pinhole, one end of the connecting rod is sleeved on fixed shaft, the other end is connected with a transmission shaft, the circular blade is equipped with insertion hole corresponding transmission shaft, transmission shaft is inserted into insertion hole to transmit torque, handle is equipped on the transmission shaft.The utility model realizes the quick adjustment of blade angle, completely avoids the direct contact of hand and sharp blade, eliminates cutting accident, greatly reduces downtime, improves production efficiency, through the cooperation of ejector pin and precisely distributed pinhole, combined with index line mark, high-precision positioning of angle is realized, ensure the accuracy and consistency of each adjustment.

Description

Technical Field

[0001] This utility model relates to the field of textile equipment technology, specifically to a circular knife adjustment device for a chenille machine. Background Technology

[0002] In the production of chenille yarn, chenille machines require circular cutters to cut the spun chenille yarn. The sharpness and cutting angle of these circular cutters directly affect the cutting quality and efficiency. Currently, the circular cutters on existing chenille machines are typically fixed in place. When the cutting edge wears down or the cutting angle needs adjustment, the blades must be manually adjusted, relying entirely on the operator's experience and feel. Adjustments are typically made in increments of 0.3-0.5 cm, making it difficult to guarantee precision. This requires a high level of expertise from the operator, and because the entire circumference of the circular cutter is a cutting edge, manual adjustment can easily cut fingers, posing a safety hazard. Therefore, there is an urgent need for a device that allows for rapid and precise online adjustment of the circular cutter angle. Utility Model Content

[0003] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a chenille machine circular cutter adjustment device that is simple in structure, easy to operate, and can accurately adjust the cutting edge angle.

[0004] The purpose of this utility model is achieved as follows: A chenille machine circular blade adjustment device includes a blade holder and a fixed shaft. The fixed shaft is integrally formed on the blade holder. A circular blade, a pressure plate, a connecting rod, and a locking nut are sequentially mounted on the fixed shaft. The outer edge of the circular blade has an annular arc-shaped cutting edge. Several pin holes are distributed circumferentially on the end face of the circular blade. A pin module is provided on the blade holder corresponding to the pin holes. One end of the connecting rod is mounted on the fixed shaft, and the other end is connected to a drive shaft. The circular blade has an insertion hole corresponding to the drive shaft. The drive shaft is inserted into the insertion hole to transmit torque. A handle is provided on the drive shaft.

[0005] Preferably, the ejector pin module includes a mounting base, a spring, and an ejector pin. The spring is housed within the mounting base, one end of the spring abuts against the ejector pin, and under the action of the spring, the head of the ejector pin can be inserted into the corresponding needle hole of the circular blade.

[0006] Preferably, the other end of the spring is pressed by a pre-tightening push rod, which is threadedly connected to a nut block at the tail of the mounting base, and the nut block is fixed on the mounting base.

[0007] Preferably, the pinhole has a tapered flared opening on the side near the ejector pin, and the head of the ejector pin is spherical.

[0008] Preferably, the tool holder is provided with an arc-shaped clearance groove corresponding to the drive shaft, and the arc-shaped clearance groove is adapted to the movement trajectory of the drive shaft. Preferably, the bottom of the tool holder is also provided with a pressing screw, which acts directly on the end face of the circular blade, and the pressing screw is fixed on the tool holder by a support block.

[0009] Preferably, the circular blade has a diameter of 50mm and 157 pinholes, dividing the arc-shaped cutting edge of the circular blade into equal parts.

[0010] Preferably, the end face of the circular blade is provided with an indexing line corresponding to each needle hole. The indexing line is located on the line connecting the needle hole and the center of the circular blade. The indexing line can be numbered in a clockwise direction.

[0011] Preferably, the graduation lines can be affixed to the blade surface as stickers or formed by laser engraving.

[0012] The beneficial effects of this utility model are: The circular blade is rotated around a fixed axis by the handle and connecting rod, which enables rapid adjustment of the cutting edge angle. This completely avoids direct contact between the human hand and the sharp blade, eliminates cuts, greatly reduces downtime, and improves production efficiency. By using the ejector pin and the precisely distributed pinholes, combined with the graduation line markings, high-precision angle positioning can be achieved, ensuring the accuracy and consistency of each adjustment. This enables quantitative and precise adjustment of "one increment per feed," ensuring that a new cutting edge of 0.1cm is used each time with minimal error. It effectively utilizes all 157 cutting edges, allowing even non-professional operators to accurately adjust the blade angle, reducing the professional requirements for workers and significantly extending the overall lifespan of the blade. The spring preload of the ejector module is adjustable, which ensures the reliability of positioning and allows the ejector to slide smoothly into and out of the needle hole during adjustment. The top pressure bar effectively reduces blade vibration during operation, improving cutting quality and equipment lifespan; In terms of quality, it avoids fatigue from the use of circular cutters, and can 100% solve the pain points of the chenille industry; in terms of cost, while ensuring stable quality, the utilization rate of parts can reach 100%; in terms of safety, it guarantees zero risk of workplace injury during use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a circular knife adjustment device for a chenille machine according to the present invention.

[0014] Figure 2 for Figure 1 The left view.

[0015] Figure 3 for Figure 1 The right view.

[0016] Figure 4 This is a schematic diagram of the internal structure of the ejector module.

[0017] Figure 5 This is a schematic diagram of the end face of a circular blade.

[0018] The components include: 1. Tool holder; 1.1. Arc-shaped clearance groove; 2. Fixed shaft; 3. Circular blade; 3.1. Arc-shaped cutting edge; 3.2. Pin hole; 3.3. Indexing line; 3.4. Pressure plate; 4. Connecting rod; 5. Locking nut; 6. Ejector pin module; 7. Mounting base; 7.1. Spring; 7.2. Ejector pin; 7.3. Pre-tightening ejector rod; 7.5. Nut block; 8. Drive shaft; 9. Handle; 10. Top pressure screw; 11. Support block. Detailed Implementation

[0019] See Figure 1-5 This utility model relates to a chenille machine circular blade adjustment device, including a blade holder 1, a fixed shaft 2, a circular blade 3, a pressure plate 4, a connecting rod 5, a locking nut 6, and a pin module 7. The blade holder 1 is integrally formed with the fixed shaft 2. The circular blade 3, pressure plate 4, connecting rod 5, and locking nut 6 are sequentially sleeved on the fixed shaft 2. The axial locking of the circular blade 3 is achieved by the locking nut 6. The outer edge of the circular blade 3 is provided with an annular arc-shaped cutting edge 3.1. Several pin holes 3.2 are distributed circumferentially on the end face of the circular blade 3. The diameter of the circular blade 3 is 50mm, the circumference is 157mm, and the number of pin holes 3.2 is 157, thus theoretically dividing the arc-shaped cutting edge of the circular blade 3 into 157 equal parts.

[0020] The blade holder 1 is provided with a ejector module 7 corresponding to the pin hole 3.2. The ejector module 7 includes a mounting base 7.1, a spring 7.2 and an ejector pin 7.3. The spring 7.2 is housed in the mounting base 7.1. One end of the spring 7.2 presses against the ejector pin 7.3. Under the action of the spring, the head of the ejector pin 7.3 can be inserted into the corresponding pin hole 3.2 of the circular blade 3.

[0021] The other end of the spring 7.2 is pressed by a pre-tightening rod 7.4. The pre-tightening rod 7.4 is threaded to a nut block 7.5 at the tail of the mounting base 7.1. The nut block 7.5 is fixed on the mounting base 7.1. The pre-tightening force of the spring 7.2 can be adjusted by turning the pre-tightening rod 7.4.

[0022] To facilitate the insertion of the ejector pin 7.3 into the needle hole 3.2 and reduce wear, the needle hole 3.2 is provided with a tapered flared opening on the side near the ejector pin 7.3, and the head of the ejector pin 7.3 is spherical, so that the ejector pin can smoothly slide out of the current needle hole and into the next needle hole when the circular blade rotates.

[0023] One end of the connecting rod 5 is sleeved on the fixed shaft 2, and the other end is connected to a transmission shaft 8. The circular blade 3 is provided with a socket 3.3 corresponding to the transmission shaft 8. The transmission shaft 8 is inserted into the socket 3.3 to transmit torque. The transmission shaft 8 is provided with a handle 9. When it is necessary to adjust the angle, loosen the locking nut 6 and turn the handle 9. The connecting rod 5 drives the circular blade 3 to rotate around the fixed shaft 2, avoiding direct contact between the human hand and the sharp blade edge and preventing cuts.

[0024] To prevent interference between the transmission shaft 8 and the tool holder 1 during the movement of the connecting rod 5, the tool holder 1 is provided with an arc-shaped clearance groove 1.1 corresponding to the transmission shaft 8. The arc-shaped clearance groove 1.1 is adapted to the movement trajectory of the transmission shaft 8.

[0025] To facilitate precise observation and angle adjustment, the end face of the circular blade 3 is provided with graduation lines 3.4 corresponding to each pinhole 3.2. The graduation lines 3.4 are located on the line connecting the pinhole 3.2 and the center of the circular blade 3, and the graduation lines 3.4 can be numbered in a clockwise direction. The graduation lines 3.4 can be affixed to the blade surface as stickers or formed by laser engraving, facilitating reading.

[0026] To further improve operational stability, a pressure screw 10 is provided at the bottom of the tool holder 1. This pressure screw 10 acts directly on the end face of the circular blade 3 to suppress axial vibration of the blade during high-speed rotation. The pressure screw 10 is fixed to the tool holder 1 by a support block 11.

[0027] Working principle: During normal operation (pile cutting), the locking nut is tightened, fixing the circular blade in place. When it's necessary to replace a worn cutting edge or adjust the angle, the operator first loosens the locking nut, then turns the handle. The handle, via the drive shaft and connecting rod, rotates the circular blade. Under spring force, the ejector pin slides out from one needle hole and, after the circular blade has rotated a certain angle, clicks into the next needle hole, achieving indexing positioning. Observing the change in the indexing line sequence allows for precise control of the adjustment amount. After adjustment, retightening the locking nut resumes operation. The pressure screw at the bottom of the blade holder holds the circular blade in place to suppress its vibration during operation.

[0028] In addition to the above embodiments, this utility model also includes other implementation methods. All technical solutions formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of this utility model.

Claims

1. A circular cutter adjustment device for a chenille machine, comprising a cutter holder and a fixed shaft, wherein the fixed shaft is integrally formed on the cutter holder, characterized in that: A circular blade, a pressure plate, a connecting rod, and a locking nut are sequentially mounted on the fixed shaft. The outer edge of the circular blade has an annular arc-shaped cutting edge, and several pin holes are distributed around the end face of the circular blade. A pin module is provided on the blade holder corresponding to the pin holes. One end of the connecting rod is mounted on the fixed shaft, and the other end is connected to a transmission shaft. The circular blade has an insertion hole corresponding to the transmission shaft. The transmission shaft is inserted into the insertion hole to transmit torque. A handle is provided on the transmission shaft.

2. The chenille machine rotary cutter adjustment device according to claim 1, characterized in that: The ejector pin module includes a mounting base, a spring, and an ejector pin. The spring is housed in the mounting base, and one end of the spring presses against the ejector pin. Under the action of the spring, the head of the ejector pin can be inserted into the corresponding needle hole of the circular blade.

3. The chenille machine circular knife adjustment device according to claim 2, characterized in that: The other end of the spring is pressed by a pre-tightening push rod, which is threaded to a nut block at the tail of the mounting base, and the nut block is fixed on the mounting base.

4. A chenille machine circular knife adjustment device according to claim 2, characterized in that: The pinhole has a conical flared opening on the side near the pin, and the head of the pin is spherical.

5. A chenille machine rotary cutter adjustment device according to claim 1, characterized in that: The tool holder is provided with an arc-shaped clearance groove corresponding to the drive shaft, and the arc-shaped clearance groove is adapted to the movement trajectory of the drive shaft.

6. The chenille machine rotary cutter adjustment device according to claim 1, characterized in that: The bottom of the tool holder is also provided with a pressing screw, which acts directly on the end face of the circular blade. The pressing screw is fixed to the tool holder by a support block.

7. A chenille machine rotary cutter adjustment device according to claim 1, characterized in that: The circular blade has a diameter of 50mm and 157 pinholes, dividing the curved edge of the circular blade into equal parts.

8. A chenille machine rotary cutter adjustment device according to claim 1 or 7, characterized in that: The end face of the circular blade is provided with graduation lines corresponding to each needle hole. The graduation lines are located on the line connecting the needle hole and the center of the circular blade. The graduation lines can be numbered in a clockwise direction.

9. A chenille machine rotary cutter adjustment device according to claim 8, characterized in that: The graduation lines can be attached to the blade surface as stickers or formed by laser engraving.

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