Glass fiber drawing on-line heating drawing machine

Abstract

The application relates to the technical field of glass fiber kiln drawing equipment, in particular to an online heating glass fiber drawing machine. The online heating glass fiber drawing machine comprises a drawing machine body, and a rotating drum disc is arranged on the drawing machine body; a plurality of machine heads are arranged on the rotating drum disc; characterized in that: the online heating glass fiber drawing machine further comprises a laser heating device; the laser heating device is provided with a plurality of laser emission ports capable of emitting laser to a plurality of yarn group forming surfaces on the working machine head; and / or the laser heating device is arranged beside the way of yarn entering the drawing machine body to heat and evaporate the wire harness before yarn winding. The control method comprises two characteristic process steps of a fixed-distance heating drawing step and a laser heating device return step. The application adopts an online winding synchronous heating scheme and / or a yarn winding pre-heating scheme; the complexity of the rotating drum disc structure is reduced, the drying time is shortened, the film forming quality is ensured, the yarn group forming quality is improved, and the automatic yarn unloading or drum winding of the mechanical hand is not affected.

Description

Technical Field

[0001] This application relates to the technical field of glass fiber furnace drawing equipment, specifically to an online heating drawing machine for glass fiber drawing. Background Technology

[0002] Currently, intense competition in the glass fiber production and processing industry, coupled with increasingly stringent quality requirements and high-end product demands from downstream enterprises, has forced glass fiber manufacturers to upgrade their fiber drawing technology to reduce costs and improve quality. Glass fiber drawing and forming involves coating, softening, and lubricating with a sizing agent, followed by winding into bundles and baking in a specialized drying oven to form a film. Because the moisture content of the sizing agent-coated yarn bundles is high, they cannot be baked at high temperatures initially in the drying oven. Otherwise, the moisture will vaporize too quickly at high temperatures (i.e., the transition from sensible heat to latent heat is too short), leading to bursting and sizing agent migration from the inside to the outside of the yarn bundle. Currently, the conventional approach is to control the temperature and extend the drying time to meet quality requirements, which is time-consuming and energy-intensive. Furthermore, some sizing agent still migrates outwards, increasing the sizing agent content on the outer edge of the yarn bundle and making drying more difficult. This hinders the improvement of product quality and the development of high-end products.

[0003] Currently, the research, development, manufacturing, and application of lasers in China are progressing rapidly. In particular, laser cutting is now widely used and no longer out of reach. Laser heating is also being applied. In view of this, a simple laser heating device is being developed, taking into account the special characteristics of glass fiber drawing process. It is ideal to set up laser heating on the surface of the yarn ball during online yarn drawing and winding or at the yarn feeding section. Because laser heating has good controllability, energy transfer and release is fast, accurate, and has low loss, there is no difference in heat radiation temperature due to changes in yarn ball diameter. It also eliminates the need for a separate, large heating device for each machine head, which would affect the yarn unloading robot. The laser generator, which can be raised and lowered above the working machine head, completely avoids the problem of switching between multiple machine heads. Furthermore, the laser generator is equipped with positive pressure air purging, which eliminates the problem of contamination of the heating element during the drawing vaporization process, thus avoiding the reduction of heat radiation or damage to the heating element.

[0004] Related technical documents:

[0005] Chinese Patent: Slow-pull automatic online yarn feeding mechanism without cutting (Publication No. CN211141896U); involving slow-pull traction mechanism and yarn changing disc.

[0006] Chinese Patent: A Multi-stroke Wire Drawing Machine Push Screw Mechanism (Announcement No.: CN222274392U); relates to a push screw mechanism.

[0007] Chinese Patent: A general-purpose wire drawing and wiring mechanism (Announcement No.: CN220665173U); relates to an automatic wire drawing mechanism for wire drawing machines. Utility Model Content

[0008] In view of this, this application provides an online heating glass fiber drawing machine to solve all or part of the technical problems described in the background section of this application.

[0009] The inventive concept of this application is as follows: 1. The laser heating device is set on the main body of the drawing machine, which reduces the complexity of the rotary drum mechanism and frees up space for yarn spools and robotic arms, allowing for the drawing and winding production of larger yarn spools and the automated loading and unloading of the robotic arms; 2. The lifting laser heating mechanism can dynamically adjust the heating distance during heating to ensure that the heating and evaporation of each layer of the yarn spool are roughly the same, reducing the process difficulty of the subsequent yarn spool drying process and ensuring the quality of the yarn spool formation; 3. The yarn bundle is heated and the moisture is evaporated before the yarn enters the drawing machine for winding. The rapid vaporization ensures that the moisture content of the yarn is controlled when it is wound into a ball, ensuring uniform moisture content and evaporation efficiency of the yarn spool.

[0010] The online heating glass fiber drawing machine and control method provided in this application to solve its technical problem are as follows:

[0011] A glass fiber drawing online heating drawing machine includes a drawing machine body, on which a rotating drum is arranged; a plurality of machine heads are arranged on the rotating drum; characterized in that: it further includes a laser heating device; the laser heating device is provided with a plurality of laser emission ports capable of emitting laser light onto a plurality of yarn forming surfaces on the working machine heads; and / or: the laser heating device is arranged next to the path through which the yarn enters the drawing machine body to heat and evaporate the yarn bundle before drawing and winding.

[0012] Furthermore, the vertical plane of the laser heating device coincides with the vertical plane of the working head located at the wire drawing station.

[0013] Furthermore, the laser heating device is positioned above the working head.

[0014] Furthermore, the laser heating device includes a lifting mechanism and a laser generator; the lifting mechanism is mounted on the main body of the wire drawing machine, and the laser generator is mounted on the lifting mechanism and can be vertically lifted and lowered under the action of the lifting mechanism.

[0015] Furthermore, the lifting mechanism includes a lifting motor, a lifting screw, a screw bearing, and a nut seat; the nut seat is connected to the lifting screw via a threaded connection and can move up and down along the lifting screw under the action of the lifting screw; the laser generator is mounted on the nut seat.

[0016] Furthermore, the online heating fiberglass drawing machine also includes a slow-pull traction mechanism; the slow-pull traction mechanism is used to slowly pull the fiberglass yarn to assist the machine head in completing the feeding process.

[0017] Furthermore, the online heating fiber drawing machine also includes a pusher mechanism; the pusher mechanism is used to push the yarn auxiliary head to complete the head change.

[0018] Furthermore, the online heating fiberglass drawing machine also includes a wire laying mechanism; the wire laying mechanism is used to lay the wire for the working head during the winding production process so that the yarn bundle is wound evenly.

[0019] Furthermore, the laser heating device includes a heating ring with a wire bundle opening; the wire bundle opening serves as a movement channel for the yarn during head changing, and the heating ring is used to provide circumferential concentrated radiation heating to the wire bundle passing through the heating ring.

[0020] Furthermore, the rotary drum is equipped with two heads; a partition plate is installed between the two heads.

[0021] The control method for the online heating glass fiber drawing machine in this application is as follows:

[0022] A control method for an online heating glass fiber drawing machine includes the following steps:

[0023] In the fixed-distance heating and drawing process, the laser generator emits laser light for heating; at the same time, the laser generator moves upward at an iterative speed V0 under the action of the lifting mechanism; until the current die head is full, the laser generator stops emitting laser light and enters the die changing process.

[0024] After the laser heating device returns to its original position, the lifting mechanism drives the laser generator back to its original position after the empty and full cylinder heads have been switched.

[0025] Where the iteration speed V x =(V0×d / 2π)×(1 / r x ); V x This refers to the current lifting speed of the lifting mechanism, where V0 is the current rotational speed of the machine head, d is the diameter of the fiberglass yarn, and r... x The current radius of the yarn bundle (initial value is the spindle radius of the machine head).

[0026] Beneficial technical effects:

[0027] 1. The glass fiber drawing online heating drawing machine and control method disclosed in this application can reduce the complexity of the rotary drum mechanism by setting the laser heating device on the main body of the drawing machine or next to the path through which the yarn enters the main body of the drawing machine. At the same time, it frees up space for yarn balls and robotic arms, allowing for the winding production of larger yarn balls and the automated loading and unloading of robotic arms.

[0028] 2. Through the fixed-distance heating mechanism, the heating distance can be dynamically adjusted when heating the yarn layer, ensuring that the heating and evaporation of each layer of the yarn ball are roughly the same. This helps to reduce the process difficulty of the subsequent yarn ball drying process and ensures the final forming quality of the yarn ball and the manufacturing of high-end products.

[0029] 3. By heating and evaporating the yarn bundle before it enters the drawing machine for winding, not only can the uniformity of the moisture content of the yarn bundle be guaranteed, but the heating and evaporation efficiency can also be improved, reducing the moisture content of the formed yarn bundle to the optimal value required by subsequent processes, reducing drying time, ensuring film quality, and preventing sizing agent migration.

[0030] The technical solution and technical effects of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0031] Figure 1 Schematic diagram of an online heating glass fiber drawing machine and its control method;

[0032] Figure 2 Front view of an online heating glass fiber drawing machine and its control method;

[0033] Figure 3 Side view of an online heating fiberglass drawing machine and its control method;

[0034] Figure 4 Schematic diagram of an open-loop laser heating mechanism for wire harnesses;

[0035] Icon description:

[0036] 1-Wire drawing machine body, 11-Rotating drum, 12-Drill head, 13-Isolation plate;

[0037] 2-Laser heating device;

[0038] 21-Lifting mechanism, 22-Laser generator, 23-Control cabinet, 24-Heating ring, 25-Wire harness port;

[0039] 211-Lifting motor, 212-Lifting screw, 213-Screw bearing, 214-Nut seat;

[0040] 3-Slow-pull traction mechanism;

[0041] 4- Screw mechanism;

[0042] 5- Cable routing mechanism. Detailed Implementation

[0043] Please see Figures 1 to 3The glass fiber drawing online heating drawing machine disclosed in this application includes a drawing machine body 1, on which a rotating drum 11 is arranged; two die heads 12 are arranged on the rotating drum 11, and a partition plate 13 is arranged between the two die heads 12. The positions of the two die heads 12 are respectively referred to as the drawing station and the standby station. The empty die head first draws and winds the yarn at the drawing station, and after the full bobbin is completed, it alternates with the empty die head located at the standby station; after the full bobbin die head alternates to the standby station, the robot automatically unloads the bobbin and loads the empty bobbin, and after the empty die head alternates to the drawing station, it continues the drawing and winding production.

[0044] The rotary drum 11 is used to switch between empty drum head and full drum head, and the isolation plate 13 is used to shield the two drum heads 12 to reduce mutual interference such as debris and dust.

[0045] The main body 1 of the drawing machine is also equipped with a slow-pulling traction mechanism 3, a wire-pushing mechanism 4, and a wire-laying mechanism 5. The slow-pulling traction mechanism 3 is used to slowly pull the glass fiber yarn to assist the machine head 12 in completing the winding operation. The wire-pushing mechanism 4 is used to push the yarn to assist the machine head 12 in changing heads. The wire-laying mechanism 5 is used to lay the wire for the machine head 12 during the winding production to ensure that the yarn bundle is wound evenly and consistently.

[0046] For details on the changing drum, slow-pulling traction mechanism, lead screw mechanism, and automatic wire laying mechanism, please refer to the prior patents listed in the background section; they will not be elaborated upon here.

[0047] The wire drawing machine for which this application seeks patent protection also includes a laser heating device 2; the laser heating device 2 is disposed on the main body 1 of the wire drawing machine, but not on the rotating drum 11.

[0048] The orientation of the laser heating device 2 should be such that the laser emission port can emit laser light onto the machine head 12 located at the wire drawing station, preferably as follows: Figure 2 As shown, the vertical plane of the laser heating device 2 and the vertical plane of the machine head 12 located at the wire drawing station coincide with each other, and the laser heating device 2 is positioned above the working machine head 12.

[0049] Placing the laser heating device 2 on the main body 1 of the drawing machine instead of the rotary drum 11 not only reduces the complexity of the rotary drum mechanism, but also frees up space for yarn winding and robotic arms, allowing for the drawing and winding of larger yarn spools and the automated loading and unloading of robotic arms.

[0050] The laser heating device 2 includes a lifting mechanism 21, a laser generator 22, and a control cabinet 23. The laser emitter 23 is mounted on the lifting mechanism 21 and can move up and down under the action of the lifting mechanism 21. The control cabinet 23 is used to complete laser control functions such as power and time adjustment.

[0051] The specific connection method is as follows: The lifting mechanism 21 includes a lifting motor 211, a lifting screw 212, a screw bearing 213, and a nut seat 214. The lifting motor 211 and the screw bearing 213 are mounted on the main body 1 of the wire drawing machine. One end of the lifting screw 212 is connected to the power output shaft of the lifting motor 211, and the other end is connected to the screw bearing 213. The nut seat 214 is threadedly connected to the lifting screw 212, and the laser generator 22 is fixedly mounted on the nut seat 214. When the lifting motor 211 rotates in the forward or reverse direction, it can drive the nut seat 214 and the laser generator 22 to move up and down together through threaded transmission.

[0052] When the lifting motor 211 drives the laser emitter 22 to perform lifting and lowering movements, the lifting and lowering speed of the laser generator 22 is adjusted in a timely manner according to the iteration speed V0.

[0053] Iteration speed V x =(V0×d / 2π)×(1 / r x ); V x This refers to the current lifting speed of the lifting mechanism 21, where V0 is the current rotational speed of the machine head, d is the diameter of the fiberglass yarn, and r... x The current radius of the yarn bundle (initial value is the spindle radius of the machine head).

[0054] The formula indicates that as the diameter of the yarn bundle gradually increases, the upward speed of the laser emitter 22 gradually decreases; taking a cylindrical yarn bundle with a diameter of 400mm as an example, the total height of the laser generator 22 during the winding process should be 200mm.

[0055] The following describes the control method for an online heating glass fiber drawing machine.

[0056] In the fixed-distance heating and drawing process, the laser generator 22 emits laser light for heating; at the same time, the laser generator 22 moves upward at an iterative speed Vx under the action of the lifting mechanism 21; until the current machine head 12 is full, the laser generator 22 stops emitting laser light and enters the tube changing process.

[0057] After the empty and full cylinder heads are switched, the lifting mechanism 21 drives the laser generator 22 back to its original position.

[0058] In one modified embodiment of this application, the yarn can be preheated before entering the drawing machine for winding. The laser heating device 2 can be located on the drawing machine body 1 or next to the path through which the yarn enters the drawing machine. Preferably, a guide roller is used to increase the stability of the yarn movement, allowing the yarn to pass smoothly and at a uniform speed through the heating position of the laser heating device 2. Heating the yarn bundle before winding in the drawing machine evaporates moisture; rapid vaporization ensures that the moisture content of the yarn is controlled when it is wound into a ball, guaranteeing the uniformity of the yarn ball's moisture content and improving the heating and evaporation efficiency, reducing the moisture content of the formed yarn ball to the optimal value required for subsequent processes.

[0059] In another embodiment of this application, the laser heating device 2 for preheating the yarn before it enters the drawing machine for winding employs an open-loop, dedicated wire harness heating mechanism. Because the linear speed of the drawing and winding process is very high, using a dedicated open-loop wire harness laser heating mechanism ensures efficient heating and evaporation. Please refer to... Figure 4 The open-loop laser heating structure for wire harnesses also includes a heating ring 24, on which a wire harness opening 25 is provided. The wire harness opening 25 serves as a movement channel for the yarn during head changing, and the heating ring 24 is used to provide circumferential concentrated radiation heating to the wire harness passing through the heating ring 24.

[0060] As can be seen from the above description, the glass fiber drawing online heating drawing machine disclosed in this application includes an online winding synchronous heating scheme and a yarn winding preheating scheme; in the online winding synchronous heating scheme, the laser heating device 2 is set above the working head, and in the yarn winding preheating scheme, the laser heating device 2 is set in the feeding section where the yarn enters the drawing machine for winding; both methods can reduce the complexity of the rotary drum structure, reduce drying time, ensure film quality, avoid sizing agent migration, improve yarn ball forming quality, and do not affect the automated unloading or loading of yarn by the robotic arm.

[0061] The technical solutions and effects of this application have been described in detail above with reference to the accompanying drawings and specific embodiments. It should be noted that those skilled in the art can develop other embodiments based on this. Any simple modifications and equivalent substitutions that do not depart from the innovative concept of this application are covered by this application and fall within the protection scope of this patent.

Claims

1. A glass fiber drawing online heating drawing machine, comprising a drawing machine body (1), wherein a rotating drum (11) is provided on the drawing machine body (1); and a plurality of machine heads (12) are provided on the rotating drum (11); characterized in that: It also includes a laser heating device (2); The laser heating device (2) is provided with a number of laser emission ports that can emit lasers to a number of yarn forming surfaces on the working head; and / or the laser heating device (2) is located next to the path through which the yarn enters the drawing machine body (1) to heat and evaporate the yarn bundle before drawing and winding.

2. The online heating glass fiber drawing machine according to claim 1, characterized in that: The vertical plane of the laser heating device (2) coincides with the vertical plane of the machine head (12) located at the wire drawing station.

3. The online heating glass fiber drawing machine according to claim 1, characterized in that: The laser heating device (2) is located above the working head.

4. The online heating glass fiber drawing machine according to claim 1, characterized in that: The laser heating device (2) includes a lifting mechanism (21) and a laser generator (22); The lifting mechanism (21) is mounted on the main body (1) of the wire drawing machine, and the laser generator (22) is mounted on the lifting mechanism (21) and can be vertically lifted and lowered under the action of the lifting mechanism (21).

5. The online heating glass fiber drawing machine according to claim 4, characterized in that: The lifting mechanism (21) includes a lifting motor (211), a lifting screw (212), a screw bearing (213), and a nut seat (214). The nut seat (214) is connected to the lifting screw (212) by a threaded connection and can move up and down along the lifting screw (212) under the action of the lifting screw (212); The laser generator (22) is fixedly mounted on the nut seat (214).

6. The online heating glass fiber drawing machine according to claim 1, characterized in that: The glass fiber drawing online heating drawing machine also includes a slow pulling traction mechanism (3); the slow pulling traction mechanism (3) is used to slowly pull the glass fiber yarn to assist the machine head (12) in completing the head change.

7. The online heating glass fiber drawing machine according to claim 1, characterized in that: The glass fiber drawing online heating drawing machine also includes a pusher rod mechanism (4); the pusher rod mechanism (4) is used to push the yarn auxiliary head (12) to complete the head change.

8. The online heating glass fiber drawing machine according to claim 1, characterized in that: The glass fiber drawing online heating drawing machine also includes a wire laying mechanism (5); the wire laying mechanism (5) is used to lay wires for the machine head (12) during winding production.

9. The online heating glass fiber drawing machine according to claim 1, characterized in that: The laser heating device (2) includes a heating ring (24) and a wire harness port (25) is provided on the heating ring (24).

10. The online heating glass fiber drawing machine according to claim 1, characterized in that: The rotary drum (11) is provided with two machine heads (12); a partition plate (13) is provided between the two machine heads (12).

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