A device for on-line short cutting and collecting of waste yarn of an upper head changer of a wire drawing machine

Abstract

The application relates to an on-line short cutting and collecting device for the waste yarn of an upper head changing device of a wire drawing machine, belonging to the technical field of the wire drawing machine, which comprises a wire drawing machine frame, a working head and a standby head arranged at the front end of the wire drawing machine frame, an auxiliary on-line short cutting assembly arranged at the front end of the working head and separated from the working head, a fixing frame bolted with the end surface of the wire drawing machine frame arranged at the upper end of the auxiliary on-line short cutting assembly, a rubber roller arranged on the auxiliary on-line short cutting assembly, a press roller arranged at the lower part of the rubber roller, a short cutting cutter roller arranged at the side surface of the rubber roller above the press roller, and a short cutting yarn collecting cover arranged at the press roller and the short cutting cutter roller. The application solves the problem that the exchange yarn and the upper head yarn must be manually cut on site during the wire drawing process, and solves the problem of the replacement of the existing large wire drawing machine. The application realizes automatic production operation without the participation of workers in the cutting and treatment of the waste yarn, improves the overall performance and benefits of the existing wire drawing machine, and changes the waste yarn into high-quality short fibers.

Description

Technical Field

[0001] This invention relates to the field of wire drawing machine technology, and more specifically to an online short-cutting and collection device for waste yarn in a wire drawing machine. Background Technology

[0002] Glass fiber, as a composite reinforcing material, has a wide range of applications and varieties. These include direct drawing into cylindrical glass fiber bundles using a drawing machine, and drawing into yarns using a yarn cake drawing machine. The shape of the glass fiber yarn ball includes online chopped and offline chopped short fibers. Offline chopped short fibers are produced by drying the yarn ball after it is drawn by a drawing machine and then chopped offline. Online chopped short fibers, on the other hand, are produced by drawing and chopping simultaneously to cut the yarn into various short fibers. This is a specialized piece of equipment that eliminates the need for the drawing and balling process.

[0003] In current glass fiber drawing production, the head-changing (boll) process on the drawing machine must be completed by two machine heads with their own waste yarn feeding rings. This results in lint and fuzz flying, affecting quality and the environment. The large amount of waste yarn also requires manual cutting and cleaning, which is difficult to handle. To address the issues of increasing the recycling value of waste yarn and achieving unmanned automation, our company has made an innovative breakthrough based on our Chinese patent application, "Drawing Machine and Control Method for Cutting Yarn Bundle Connection and Assisting Head Changing," application number 2023115908687. This breakthrough enables an online short-cutting process for the existing drawing machine during head changing, allowing for continuous online cutting of fiber filaments during head changing and boll switching. Waste yarn is transformed into valuable short fibers, eliminating the need for waste yarn and fuzz processing, and turning waste into valuable short fibers. Summary of the Invention

[0004] This invention primarily addresses the shortcomings of existing technologies by providing an online short-cutting and collection device for waste yarn in a yarn drawing machine. Its unique structural design is most notable for eliminating the traditional waste yarn feeding ring at the machine head. Instead, it employs an external online short-cutting process, cleverly positioned outside the working machine head. The waste yarn enters the online short-cutting process before returning to the working machine head for normal yarn drawing. This device features simple structure, high efficiency, high waste utilization value, compatibility with various yarn drawing machine upgrades, and time and labor savings. It solves the problem of manually cutting and processing the yarn during the yarn drawing process, as well as the need for large-scale upgrades of existing yarn drawing machines. It achieves automated production operations with no human intervention in waste yarn cutting and processing, improving the overall performance and efficiency of existing yarn drawing machines and transforming waste yarn into high-quality short fibers.

[0005] The above-mentioned technical problems of the present invention are mainly solved by the following technical solutions:

[0006] A waste yarn online short-cutting and collection device for a drawing machine includes a drawing frame, a working head and a spare head at the front end of the drawing frame, an auxiliary online short-cutting assembly for the working head that is separate from and non-contact with the working head at the front end of the working head, a fixing frame bolted to the end face of the drawing frame at the upper end of the auxiliary online short-cutting assembly for the upper head, a rubber roller at the lower part of the rubber roller, a pressure roller at the lower part of the rubber roller, and a short-cutting blade roller for short-cutting on the side of the rubber roller above the pressure roller.

[0007] Preferably, the auxiliary upper head changing online short cutting assembly includes a movable support, the lower part of which is provided with an upper head changing online short cutting assembly seat, and a rubber roller is provided between the front end of the upper head changing online short cutting assembly seat and the working head.

[0008] The structure of the online short-cut component seat for the upper head change is disclosed in Chinese patent application No. 2023115908687, entitled "A drawing machine capable of breaking yarn bundle connections and assisting in upper head change, and its control method".

[0009] Preferably, a pressure roller cylinder is provided between the short cutting roller and the auxiliary upper changing online short cutting assembly, a short cutting rocker arm is provided between the pressure roller cylinder and the short cutting roller, a pressure roller is provided at the lower end of the short cutting roller that is in movable contact with the rubber roller, and a pressing rocker arm is provided between the short cutting roller and the pressure roller.

[0010] Preferably, a torsion spring reset seat is provided between the pressure roller and the short cutting roller, which is fixed to the pressure rocker arm by a pin-type hinge.

[0011] Preferably, the pressure roller, the pressing rocker arm, and the short-cutting roller are provided with a short-cutting yarn collection cover, and the lower end of the short-cutting yarn collection cover is provided with a negative pressure collection pipe to collect the short-cut fibers.

[0012] Preferably, the short-cut rocker arm is provided with a drive motor that is screwed and fixed to the movable bracket, and the movable bracket is provided with a pulley that is connected to the drive motor and the upper head online short-cut component seat in a transmission manner.

[0013] Preferably, a changer turntable is provided between the working head and the wire drawing frame, and is movably nested and connected to the wire drawing frame. The changer turntable is provided with spare heads that are symmetrically mirrored with the working head.

[0014] The present invention can achieve the following effects:

[0015] This invention provides an online short-cutting and collection device for waste yarn during yarn drawing machines. Compared with existing technologies, it features simple structure, high efficiency, high waste utilization value, compatibility with various yarn drawing machine upgrades, and time and labor savings. It solves the problem of manual on-site cutting of yarn during yarn drawing and the need for upgrading existing large-scale yarn drawing machines. It achieves automated production operations with no human intervention in waste yarn cutting and processing, improves the overall performance and efficiency of existing yarn drawing machines, and transforms waste yarn into high-quality short fibers. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention.

[0017] Figure 2 This is a side view structural diagram of the present invention.

[0018] Figure 3 This is a schematic diagram of the connection structure between the auxiliary upper component and the short-cut component of the present invention.

[0019] In the diagram: 1. Auxiliary upper head online short cutting assembly; 2. Fixing frame; 3. Changing drum turntable; 4. Push rod; 5. Pressure roller / knife roller cylinder; 6. Drawing machine frame; 7. Yarn; 8. Working head; 9. Short fiber; 10. Negative pressure collection pipe; 11. Spare head; 12. Moving bracket; 13. Drive motor; 14. Rubber roller; 15. Pressure roller; 16. Short yarn collection cover; 17. Pressing rocker arm; 18. Upper head online short cutting seat; 19. Pulley; 20. Torsion spring reset seat; 21. Short cutting knife roller; 22. Short cutting rocker arm. Detailed Implementation

[0020] The technical solution of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. Embodiments: As shown in the figures... Figure 1 , Figure 2 and Figure 3As shown, an online waste yarn cutting and collection device for a drawing machine includes a drawing frame 6, a working head 8 at the front end of the drawing frame 6, a bobbin changing turntable 3 nested between the working head 8 and the drawing frame 6, and spare heads 11 symmetrically mirrored on the bobbin changing turntable 3. Yarn 7 is wound onto the working head 8 to form a yarn bundle. An auxiliary online waste yarn cutting assembly 1 is located at the front end of the working head 8, and a fixing frame 2 bolted to the end face of the drawing frame 6 is located at the upper end of the auxiliary online waste yarn cutting assembly 1. The auxiliary online short-cutting assembly 1 includes a movable support 12. An online short-cutting seat 18 for the upper head is located at the lower part of the movable support 12. A rubber roller 14 is positioned between the front end of the online short-cutting seat 18 and the working head 8. The rubber roller 14 and the working head 8 are separated and non-contactly connected for synchronous upper head changing. A short-cutting blade roller 21 for short cutting is located on the side of the rubber roller 14. A pressure roller 15 that movably contacts the rubber roller 14 is located at the lower end of the short-cutting blade roller 21. A pressure roller cylinder 5 is located between the short-cutting blade roller 21 and the auxiliary online short-cutting assembly 1. A short-cutting rocker arm 22 is located between the pressure roller cylinder 5 and the short-cutting blade roller 21. A drive motor 13, screwed and fixed to the movable support 12, is located above the short-cutting rocker arm 22. A pulley 19, which is inserted and driven by the drive motor 13 and the online short-cutting seat 18, is located on the outside of the movable support 12. A clamping rocker arm 17 is located between the short-cutting blade roller 21 and the pressure roller 15. A torsion spring return seat 20 is provided between the pressure roller 15 and the short cutting roller 21, and is fixed to the pressing rocker arm 17 by a pin-type hinge. A short yarn collecting cover 16 is provided around the pressure roller 15, the pressing rocker arm 17, and the short cutting roller 21. A negative pressure collecting pipe 10 is provided at the lower end of the short yarn collecting cover 16. Short fibers 9 are collected in the short yarn collecting cover 16 and the negative pressure collecting pipe 10.

[0021] Work steps

[0022] Step 1: Start the slow pull at the top. The push rod pushes the yarn to the side of the rubber roller to enter the slow pull traction.

[0023] Step 2: The rubber roller starts, the yarn enters the pressure roller and then the cutter roller for direct short cutting and collection, and then it is slowly pulled to a stop.

[0024] Step 3: The pusher rod retracts, the yarn enters the working head and is drawn normally, the rubber roller leaves the head and stops.

[0025] Step 4: When the machine head is full, the rubber roller starts and moves closer to the machine head. The pusher rod pushes the yarn to the side of the rubber roller, enters the pressure roller, and then enters the cutter roller for direct short cutting and collection.

[0026] Step 5: The rubber roller leaves the die head and continues to collect the short-cut yarn. After switching between the working and standby die heads, the rubber roller moves closer to the die head, the pusher retracts, and the yarn enters the working die head for normal drawing. The rubber roller then leaves the die head and stops. Depending on whether the yarn is fully drawn or the die head is full, continue the above steps for continuous drawing and short-cut collection.

[0027] In summary, this online short-cutting and collection device for waste yarn during yarn drawing machines features simple structure, high efficiency, high waste utilization value, compatibility with various yarn drawing machine upgrades, and time and labor savings. It solves the problem of manual on-site cutting and processing of yarn during yarn drawing, as well as the need for upgrading existing large-scale yarn drawing machines. It achieves automated production operations with no human intervention in waste yarn cutting and processing, improves the overall performance and efficiency of existing yarn drawing machines, and transforms waste yarn into high-quality short fibers.

[0028] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] In summary, the above description is only a specific embodiment of the present invention, but the structural features of the present invention are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present invention are covered by the patent scope of the present invention.

Claims

1. A device for online short cutting and collection of waste yarn at the top of a drawing machine, characterized in that: The device includes a drawing frame (6), a working head (8) at the front end of the drawing frame (6), a bobbin changing turntable (3) that is movably nested between the working head (8) and the drawing frame (6), a spare head (11) that is symmetrically mirrored with the working head (8) is provided on the bobbin changing turntable (3); an auxiliary upper head changing online short cutting assembly (1) that is separate from the working head (8) is provided at the front end of the working head (8), a rubber roller (14) is provided on the auxiliary upper head changing online short cutting assembly (1), a pressure roller (15) is provided at the lower part of the rubber roller (14), and a short cutting knife roller (21) for short cutting is provided on the upper side of the pressure roller (15). The push rod pushes the yarn to the side of the rubber roller (14) for slow pulling and retraction and then retracts it. The short-cut rocker arm (22) is provided with a drive motor (13) that is screwed and fixed to the movable bracket (12). The movable bracket (12) is provided with a pulley (19) that is connected to the drive motor (13) and the upper head online short-cut seat (18) in a transmission manner. The auxiliary upper head online short cutting assembly (1) includes a movable bracket (12), the lower part of which is provided with an upper head online short cutting seat (18), and the upper end of the auxiliary upper head online short cutting assembly (1) is provided with a fixed frame (2) that is bolted to the end face of the wire drawing machine frame (6).

2. The online short-cutting and collection device for waste yarn in a drawing machine according to claim 1, characterized in that: A pressure roller cylinder (5) is provided between the short cutting roller (21) and the auxiliary upper head online short cutting assembly (1). A short cutting rocker arm (22) is provided between the pressure roller cylinder (5) and the short cutting roller (21). A pressure roller (15) is provided at the lower end of the short cutting roller (21) and is in movable contact with the rubber roller (14). A pressing rocker arm (17) is provided between the short cutting roller (21) and the pressure roller (15).

3. The online short-cutting and collection device for waste yarn in a drawing machine according to claim 2, characterized in that: The pressure roller (15) and the short cutting roller (21) are provided with a torsion spring reset seat (20) that is fixed to the pressure rocker arm (17) by a pin-type hinge.

4. The online short-cutting and collection device for waste yarn in a drawing machine according to claim 1, characterized in that: The pressure roller (15), the pressing rocker arm (17), and the short cutting roller (21) are provided with a short cutting yarn collection cover (16) around them, and a negative pressure collection pipe (10) is provided at the lower end of the short cutting yarn collection cover (16).

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