Automatic head changing device and method for glass fiber drawing machine

Abstract

The invention belongs to the technical field of glass fiber drawing, and discloses a glass fiber drawing machine automatic head changing device and method.The glass fiber drawing machine automatic head changing device comprises a base, the base is provided with a sliding seat sliding in the length direction of a drawing machine head and a first driving mechanism driving the sliding seat to slide, and the sliding seat is provided with a head changing motor; a mounting cylinder with an opening facing the machine head is arranged at the rotor end of the head changing motor, a sliding sleeve sliding in the length direction of the mounting cylinder and a second driving mechanism driving the sliding sleeve to slide are arranged in the mounting cylinder, a plurality of grooves are formed in the outer wall of the sliding sleeve in a circumferential array mode, and yarn pushing rods are arranged at the positions, corresponding to the grooves, of the inner wall of the mounting cylinder. Tow transition during switching of the machine heads is achieved through the sliding sleeve, so that tows cannot be wound in the grooves of the front end covers of the machine heads, the tows connected between the machine heads and the sliding sleeve can be pulled apart under the action of pulling force during switching of the machine heads and loading, manual cutting is not needed, automatic head switching is achieved, and the high-rhythm production requirement can be met.

Description

Technical Field

[0001] This invention relates to the field of glass fiber drawing technology, and in particular to an automatic head-changing device and method for a glass fiber drawing machine. Background Technology

[0002] The fiber drawing process is a major step in glass fiber production, and the fiber drawing machine is the core equipment in this process. It is a mechanical device that draws molten glass into fibers and winds them into fiber rolls according to a certain pattern. When the fiber drawing machine is full, a "head change" operation (i.e., replacing the machine head with a new one to continue winding) is required. The efficiency, stability, and smoothness of the head change directly affect the continuous operation of the fiber drawing production line and the product quality.

[0003] For many years, the fiber drawing machines used in the glass fiber industry have operated by manually cutting the filament bundle when changing heads. The operator would then manually cut the bundle, remove the fully wound spool, install an empty spool, and guide the bundle to a new spool. This process was inefficient, time-consuming, and prone to breakage or tension fluctuations during head changes, causing production line downtime and failing to meet the demands of high-paced production. Furthermore, the tools or sharp objects used by operators to manually cut the filament bundle could damage the end cap of the drawing machine head, leading to uneven mass distribution and vibration over time, thus affecting the overall lifespan of the equipment. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides an automatic head-changing device and method for a glass fiber drawing machine.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: an automatic head-changing device for a glass fiber drawing machine, comprising a base, a sliding seat that slides along the length direction of the drawing machine head and a first driving mechanism for driving the sliding seat to slide on the base, a head-changing motor on the sliding seat, an installation cylinder with an opening facing the drawing machine head at the rotor end of the head-changing motor, a sliding sleeve that slides along its length direction and a second driving mechanism for driving the sliding sleeve to slide inside the installation cylinder, a plurality of grooves arranged in a circular array on the outer wall of the sliding sleeve that are consistent with its length direction, and a yarn-pushing rod provided on the inner wall of the installation cylinder at the corresponding groove.

[0006] Furthermore, the sliding sleeve is a cylindrical structure with its opening facing the head-changing motor side, the diameter of its opening end is consistent with the inner diameter of the mounting cylinder, and the diameter of the bottom end of the cylinder is smaller than the diameter of the opening end.

[0007] Furthermore, the outer wall of the sliding sleeve is provided with threads.

[0008] Furthermore, the second driving mechanism includes a driving cylinder disposed at the bottom of the mounting cylinder, the piston rod end of the driving cylinder being fixedly connected to the bottom of the sliding sleeve, and a plurality of tension springs being disposed between the bottom of the sliding sleeve and the bottom of the mounting cylinder.

[0009] Furthermore, the rotor has air holes along its length, and a rotary joint communicating with the air holes is provided at the end of the rotor away from the mounting cylinder. The end of the air hole near the mounting cylinder is connected to the air port of the drive cylinder through an air pipe.

[0010] Furthermore, the base is provided with two slide rails that are aligned with the length direction of the wire drawing machine head. Two sliders are slidably mounted on the slide rails. The bottom of the sliding base is provided with several connecting blocks, which are fixedly connected to the corresponding sliders.

[0011] Furthermore, the first driving mechanism includes two fixed plates spaced apart on the base, with a lead screw rotatably mounted between the two fixed plates. The length direction of the lead screw is consistent with the length direction of the slide rail. A nut seat is helically mounted on the lead screw, and the nut seat is fixedly connected to the bottom of the slide seat. A drive motor is also mounted on the base at the end of the lead screw away from the wire drawing machine. The output shaft of the drive motor is connected to the end of the lead screw via a coupling.

[0012] An automatic head-changing method for a glass fiber drawing machine, applied to an automatic head-changing device for a glass fiber drawing machine, includes the following steps: S1: Fix the base to one side of the end of the wire drawing machine head, and arrange the mounting cylinder with the wire drawing machine head at the working position; S2: When the fiber roll on the drawing machine head reaches the preset weight, the first drive mechanism drives the sliding seat to slide towards the drawing machine head, while the second drive mechanism drives the sliding sleeve to extend outward until the bottom of the sliding sleeve is close to the end of the drawing machine head. S3: When the fiber roll on the drawing machine head reaches the standard weight, the head-changing motor drives the mounting cylinder and sliding sleeve to rotate and synchronize with the speed of the drawing machine head. The guide rod of the drawing machine extends and pushes the fiber bundle towards the sliding sleeve, so that the fiber bundle is wrapped around the sliding sleeve. S4: The drawing machine switches heads, moves the head with the drawn fiber roll to the standby position, and moves the empty head in the standby position to the working position; S5: The yarn guide rod of the drawing machine retracts, causing the yarn bundle to return and be loaded onto the machine head at the working position; S6: The first drive mechanism drives the sliding seat to return to its original position, and at the same time the second drive mechanism drives the sliding sleeve to return to its original position. Under the action of the push rod, the yarn bundle wrapped on the sliding sleeve is pushed out of the sliding sleeve.

[0013] In summary, the present invention has the following beneficial effects: This application includes a base, a sliding seat, a first drive mechanism, a head-changing motor, a mounting cylinder, a sliding sleeve, a second drive mechanism, a groove, and a yarn-pushing rod. The first drive mechanism drives the sliding seat to move, and the second drive mechanism drives the sliding sleeve to engage with the drawing machine head. The head-changing motor then drives the sliding sleeve to rotate synchronously with the drawing machine head. This allows the yarn guide rod of the drawing machine to push the yarn bundle onto the sliding sleeve. After the drawing machine completes the head switching, the yarn bundle is returned to the head. The sliding sleeve facilitates the yarn bundle transition during head switching, preventing the yarn bundle from getting tangled in the groove of the head's front cover during head switching, eliminating the need for manual cutting and preventing damage to the head. The yarn bundle connected between the head and the sliding sleeve is broken by tension during head switching and loading, also eliminating the need for manual operation, thus achieving automatic head changing and meeting the demands of high-paced production. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the structure of the head-changing motor, mounting cylinder, and sliding sleeve in Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the end face structure of the head-changing motor, mounting cylinder, and sliding sleeve in Embodiment 1 of the present invention; Figure 4 This is a cross-sectional structural diagram of the head-changing motor, mounting cylinder, and sliding sleeve in Embodiment 1 of the present invention; Figure 5 This is a schematic diagram of the usage state of Embodiment 1 of the present invention.

[0015] In the diagram: 10, base; 11, slide rail; 12, slider; 20, sliding seat; 21, connecting block; 30, first drive mechanism; 31, fixing plate; 32, lead screw; 33, nut seat; 34, drive motor; 40, head-changing motor; 41, rotor; 42, air hole; 43, rotary joint; 44, air pipe; 50, mounting cylinder; 51, yarn pusher; 60, sliding sleeve; 61, groove; 70, second drive mechanism; 71, drive cylinder; 72, tension spring. Detailed Implementation

[0016] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. Example

[0017] like Figure 1-5 As shown in the figure, this application discloses an automatic head-changing device for a glass fiber drawing machine, including a base 10, a sliding seat 20, a first drive mechanism 30, a head-changing motor 40, a mounting cylinder 50, a sliding sleeve 60, and a second drive mechanism 70.

[0018] Specifically, the base 10 adopts a plate-like structure and is fixedly mounted on the ground on one side of the wire drawing machine head to ensure the overall stability of the device. Two slide rails 11 are spaced apart on the base 10, with the length direction of the slide rails 11 aligned with the length direction of the wire drawing machine head. Two sliders 12 are slidably mounted on each slide rail 11, with a clearance fit between the sliders 12 and the slide rail 11 to ensure smooth sliding. Four connecting blocks 21 are provided at the bottom of the sliding seat 20, and each of the four connecting blocks 21 is fixedly connected to its corresponding slider 12 by bolts, allowing the sliding seat 20 to slide along the length direction of the wire drawing machine head on the base 10.

[0019] The first drive mechanism 30 drives the sliding seat 20 to slide on the base 10. It includes two fixed plates 31 spaced apart on the base 10, with a lead screw 32 rotatably mounted between the two plates 31 via a bearing. The length of the lead screw 32 is aligned with the length of the slide rail 11. A nut seat 33 is helically mounted on the lead screw 32 and is fixedly connected to the bottom of the sliding seat 20. A drive motor 34, a servo motor, is also mounted on the base 10 at the end of the lead screw 32 furthest from the wire drawing machine. The output shaft of the drive motor 34 is connected to the end of the lead screw 32 via a coupling. The drive motor 34 precisely controls the rotation of the lead screw 32, thereby driving the sliding seat 20 to slide smoothly along the slide rail 11 via the nut seat 33.

[0020] The head-changing motor 40 is bolted to the sliding seat 20. The head-changing motor 40 is a custom-designed variable frequency speed control motor, enabling precise speed adjustment and synchronous control. A mounting cylinder 50 is concentrically mounted at the end of the rotor 41 of the head-changing motor 40. The mounting cylinder 50 is a cylindrical structure with its opening facing the wire drawing machine head. A sliding sleeve 60 is slidably mounted inside the mounting cylinder 50 along its length. The sliding sleeve 60 is a frustum-shaped cylindrical structure with its opening facing the head-changing motor 40, and its opening diameter is the same as the inner diameter of the mounting cylinder 50.

[0021] The second drive mechanism 70 is used to drive the sliding sleeve 60 to slide. It includes a drive cylinder 71 mounted at the bottom of the mounting cylinder 50. The piston rod end of the drive cylinder 71 is fixedly connected to the bottom of the sliding sleeve 60. Several tension springs 72 are also provided between the bottom of the sliding sleeve 60 and the bottom of the mounting cylinder 50. The two ends of the tension springs 72 are welded and fixed to the sliding sleeve 60 and the mounting cylinder 50, respectively. The drive cylinder 71 provides power for the extension and retraction of the sliding sleeve 60. The tension springs 72 are used for the rapid reset of the sliding sleeve 60 and simultaneously buffer the impact force during the extension and retraction of the sliding sleeve 60, preventing component wear and extending the service life of the equipment.

[0022] The rotor 41 has air holes 42 along its length. A rotary joint 43 communicating with the air holes 42 is located at the end of the rotor 41 furthest from the mounting cylinder 50. The end of the air hole 42 near the mounting cylinder 50 is connected to the air port of the drive cylinder 71 via an air pipe 44. The rotary joint 43 is connected to an external air source. This air passage design allows for a stable air supply to the drive cylinder 71 while the head-changing motor 40 drives the rotor 41 and mounting cylinder 50 to rotate, preventing the air pipe 44 from becoming entangled and ensuring the normal operation of the second drive mechanism 70.

[0023] When the sliding sleeve 60 needs to extend, an external air source supplies air to the drive cylinder 71 through the rotary joint 43, air hole 42, and air pipe 44. This drives the piston rod to extend and push the sliding sleeve 60 outward, causing the tension spring 72 to stretch and slide the sliding sleeve 60 out of the mounting cylinder 50. When the sliding sleeve 60 needs to retract, the air supply to the drive cylinder 71 stops, and the tension spring 72 causes the sliding sleeve 60 to return to its original position within the mounting cylinder 50.

[0024] The working principle of the above device is as follows: the sliding seat 20 is driven to move towards the drawing machine head by the drive motor 34 of the first drive mechanism 30, and the sliding sleeve 60 is driven to extend outward by the drive cylinder 71 of the second drive mechanism 70, so that the end of the sliding sleeve 60 is close to the end of the drawing machine head at the working position. Then, the head-changing motor 40 drives the sliding sleeve 60 to rotate synchronously with the drawing machine head. Next, the yarn guide rod of the drawing machine pushes the yarn bundle to the position of the sliding sleeve 60, so that the yarn bundle is wound around the sliding sleeve 60. In this way, when the drawing machine head is switched, the yarn bundle will not be wrapped in the groove 61 of the front cover of the drawing machine head. After the drawing machine head is switched, the yarn guide rod of the drawing machine retracts, so that the yarn bundle returns to the position of the drawing machine head. Under the action of the drawing machine loading mechanism, the yarn bundle is loaded at the empty drawing machine head. The yarn bundle transition during the drawing machine head switching is achieved by the sliding sleeve 60, so there is no need for manual cutting operation and no damage to the drawing machine head. The wire bundle connecting the head and the sliding sleeve 60 will be broken under tension when switching heads and loading the machine, without the need for manual operation, thus realizing automatic head changing and meeting the needs of high-paced production.

[0025] To ensure better winding of the yarn onto the sliding sleeve 60, threads are provided on the outer wall of the sliding sleeve 60, thereby increasing the friction between the yarn and the outer wall of the sliding sleeve 60, preventing slippage during winding, and ensuring stable tension during yarn transition. Several grooves 61 arranged in a circumferential array along the length of the sliding sleeve 60 are provided on the outer wall of the mounting cylinder 50, corresponding to the grooves 61. When the sliding sleeve 60 returns to its original position within the mounting cylinder 50, the yarn pusher 51 and the grooves 61 can push the yarn wound on the sliding sleeve 60 out of the sliding sleeve 60. The diameter of the bottom end of the sliding sleeve 60 is smaller than the diameter of the open end, making it easier to push the yarn wound on the sliding sleeve 60 out. Example

[0026] This application discloses an automatic head-changing method for a glass fiber drawing machine, including the following steps: S1: Fix the base 10 to one side of the end of the wire drawing machine head, and arrange the mounting cylinder 50 and the working position of the wire drawing machine head in the same core to ensure the coaxiality of the sliding sleeve 60 and the head during the head changing process and avoid the wire bundle from shifting.

[0027] S2: When the fiber roll on the drawing machine head reaches the preset weight, the drive motor 34 of the first drive mechanism 30 drives the sliding seat 20 to slide towards the drawing machine head. Simultaneously, the drive cylinder 71 of the second drive mechanism 70 drives the sliding sleeve 60 to extend outwards until its bottom end is close to the end of the drawing machine head, preparing for fiber winding. Specifically, a distance sensor can be installed at the end of the sliding sleeve 60 to sense the distance between its bottom end and the end of the drawing machine head. The preset weight of the fiber roll is less than the standard weight of the fiber roll; the difference should be slightly greater than the drawing weight of the drawing machine during the movement of the sliding sleeve 60 to the end of the drawing machine head. This ensures that the sliding sleeve 60 reaches its position before the fiber roll reaches the standard weight, without excessive waiting time. Specific values ​​are calculated based on the drawing efficiency of the drawing machine and the movement efficiency of the sliding sleeve 60 to adapt to different situations.

[0028] S3: When the fiber roll on the drawing machine head reaches the standard weight, the head-changing motor 40 drives the mounting cylinder 50 and the sliding sleeve 60 to rotate and synchronize with the speed of the drawing machine head, ensuring that the winding tension is stable when the fiber bundle transitions to the sliding sleeve 60. The fiber bundle is pushed to the sliding sleeve 60 by the extension of the yarn guide rod of the drawing machine. With the support of the threads on the outer wall of the sliding sleeve 60, the fiber bundle is wound on the sliding sleeve 60.

[0029] S4: The drawing machine starts the head switching program to switch heads, moving the head with the drawn fiber roll to the standby position and the empty head in the standby position to the working position, thus achieving continuous production. During head switching, the filament bundle connected between the head and the sliding sleeve 60 is broken under tension, thereby eliminating the need for manual cutting.

[0030] S5: The yarn guide rod of the drawing machine retracts, causing the yarn bundle to return to the empty head position in the working position. It then passes through the drawing machine's mounting mechanism onto the head in the working position, completing a smooth transition of the yarn bundle. Once the yarn bundle is captured by the drawing machine's mounting mechanism, the sliding sleeve 60, still rotating, causes the yarn bundle connecting the head and the sliding sleeve 60 to be broken under tension, thus eliminating the need for manual cutting.

[0031] S6: The drive motor 34 of the first drive mechanism 30 drives the sliding seat 20 to return to its original position. At the same time, the drive cylinder 71 of the second drive mechanism 70 drives the sliding sleeve 60 to return to its original position. When the sliding sleeve 60 returns to its original position, the yarn bundle wrapped on the sliding sleeve 60 is pushed out of the sliding sleeve 60 under the action of the yarn pusher 51, completing the entire head changing process and entering the next production cycle.

[0032] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. An automatic head-changing device for a glass fiber drawing machine, characterized in that: The device includes a base (10), on which a sliding seat (20) that slides along the length of the drawing machine head and a first driving mechanism (30) that drives the sliding seat (20) to slide are provided. A head-changing motor (40) is provided on the sliding seat (20). The rotor (41) end of the head-changing motor (40) is provided with an installation cylinder (50) with an opening facing the drawing machine head. A sliding sleeve (60) that slides along its length and a second driving mechanism (70) that drives the sliding sleeve (60) to slide are provided inside the installation cylinder (50). Several grooves (61) that are consistent with its length direction are arranged in a circular array on the outer wall of the sliding sleeve (60). A yarn pusher (51) is provided on the inner wall of the installation cylinder (50) at the corresponding groove (61).

2. The automatic head-changing device for a glass fiber drawing machine according to claim 1, characterized in that: The sliding sleeve (60) is a cylindrical structure with its opening facing the head-changing motor (40). The diameter of its opening end is the same as the inner diameter of the mounting cylinder (50), and the diameter of the bottom end of the cylinder is smaller than the diameter of the opening end.

3. The automatic head-changing device for a glass fiber drawing machine according to claim 2, characterized in that: The outer wall of the sliding sleeve (60) is provided with threads.

4. The automatic head-changing device for a glass fiber drawing machine according to claim 2, characterized in that: The second drive mechanism (70) includes a drive cylinder (71) disposed at the bottom of the mounting cylinder (50). The piston rod end of the drive cylinder (71) is fixedly connected to the bottom of the sliding sleeve (60). Several tension springs (72) are also disposed between the bottom of the sliding sleeve (60) and the bottom of the mounting cylinder (50).

5. The automatic head-changing device for a glass fiber drawing machine according to claim 3, characterized in that: The rotor (41) has an air hole (42) inside it along its length direction. The rotor (41) is provided with a rotary joint (43) that communicates with the air hole (42) at the end away from the mounting cylinder (50). The end of the air hole (42) near the mounting cylinder (50) is connected to the air port of the drive cylinder (71) through an air pipe (44).

6. The automatic head-changing device for a glass fiber drawing machine according to claim 1, characterized in that: The base (10) is provided with two slide rails (11) that are aligned with the length direction of the wire drawing machine head. Two sliders (12) are slidably mounted on the slide rails (11). The bottom of the sliding seat (20) is provided with several connecting blocks (21), and the several connecting blocks (21) are fixedly connected to the corresponding sliders (12).

7. The automatic head-changing device for a glass fiber drawing machine according to claim 6, characterized in that: The first drive mechanism (30) includes two fixed plates (31) spaced apart on the base (10). A lead screw (32) is rotatably arranged between the two fixed plates (31). The length direction of the lead screw (32) is consistent with the length direction of the slide rail (11). A nut seat (33) is spirally arranged on the lead screw (32). The nut seat (33) is fixedly connected to the bottom of the sliding seat (20). A drive motor (34) is also arranged on the base (10) at the end of the lead screw (32) away from the wire drawing machine. The output shaft of the drive motor (34) is connected to the end of the lead screw (32) through a coupling.

8. An automatic head-changing method for a glass fiber drawing machine, applied to an automatic head-changing device for a glass fiber drawing machine as described in any one of claims 1-7, characterized in that, Includes the following steps: S1: Fix the base (10) on one side of the end of the wire drawing machine head, and arrange the mounting cylinder (50) with the head of the wire drawing machine at the working position; S2: When the fiber roll on the drawing machine head reaches the preset weight, the first drive mechanism (30) drives the sliding seat (20) to slide towards the drawing machine head, and at the same time the second drive mechanism (70) drives the sliding sleeve (60) to extend outward until the bottom of the sliding sleeve (60) is close to the end of the drawing machine head. S3: When the fiber roll on the drawing machine head reaches the standard weight, the head-changing motor (40) drives the mounting cylinder (50) and sliding sleeve (60) to rotate and synchronize with the speed of the drawing machine head. The guide rod of the drawing machine extends and pushes the fiber bundle towards the sliding sleeve (60), so that the fiber bundle is wrapped around the sliding sleeve (60). S4: The drawing machine switches heads, moves the head with the drawn fiber roll to the standby position, and moves the empty head in the standby position to the working position; S5: The yarn guide rod of the drawing machine retracts, causing the yarn bundle to return and be loaded onto the machine head at the working position; S6: The first drive mechanism (30) drives the sliding seat (20) to return to its original position, and at the same time the second drive mechanism (70) drives the sliding sleeve (60) to return to its original position. Under the action of the yarn pusher (51), the yarn bundle wrapped on the sliding sleeve (60) is pushed out of the sliding sleeve (60).

Images