Outward-taper wire drawing machine head capable of automatically adjusting and avoiding wire drawing resonance area on line

Abstract

The utility model belongs to the technical field of glass fiber drawing machines, and particularly relates to a drawing machine head with an outward taper, which can automatically adjust and avoid a drawing resonance area on line. The device comprises a machine head main shaft, a bearing seat, a front taper sleeve, a rear taper sleeve, a barrel replacing body, a sealing cavity and an inflation inlet, the taper of the front taper sleeve and the taper of the rear taper sleeve face outwards, and the conical surfaces of the front taper sleeve and the rear taper sleeve are opposite. When the machine head of the wire drawing machine operates, real-time detection and feedback of PLC control can be realized through the machine head vibration sensor, and PID adjustment of the proportional valve is adopted, so that online real-time data acquisition and exchange are realized, a soft support vibration reduction device on a bearing seat is controlled, vibration of the machine head is automatically controlled within a suitable range, and online closed-loop real-time adjustment of rigidity of the machine head is realized.

Description

Technical Field

[0001] The present application belongs to the technical field of glass fiber drawing machines, and specifically relates to a tapered outward drawing machine head that can automatically adjust online to avoid a drawing resonance area. Background Art

[0002] Due to the complexity of the glass fiber drawing process, the wide variety of varieties, and the large speed span, resonance is inevitable when the drawing machine head rotates. In particular, the Teflon bobbin is made of circumferential superposition and bonding, and the imbalance is large. If several bobbins are installed on a line, it is difficult for the head to overcome the resonance. If it operates in this section, it will shorten the service life of the bearings or even damage them, and cause various other problems caused by vibration.

[0003] The solution to this problem is usually to select a certain speed range based on the user's wire drawing process to avoid the resonance area. Some users choose a single process to avoid the resonance area for wire drawing, so basically two types of machines are used, namely high-speed and low-speed wire drawing machines. In other words, users have to increase their investment, but some so-called high-speed and low-speed models on the market have not completely overcome the resonance problem, which causes great trouble to users.

[0004] Please refer to our company's prior Chinese patent: A Machine Head Soft Support Rigidity Adjustment Mechanism, Publication No.: CN214299890U. Its disadvantage is that a specific speed range must be selected to manually adjust the machine head support rigidity to the appropriate operating range to avoid the resonance zone. However, this selective manual adjustment method is no longer sufficient for the current manufacturing of high-end composite materials. Due to the high line speeds of high-end products and the long yarn lengths (i.e., large yarn packages with small inner diameters and extra-large outer diameters), the difference between the starting and ending speeds is large, resulting in the manual adjustment range not being able to meet the entire operating range. Utility Model Content

[0005] In view of this, the present application provides a tapered outward drawing machine head that can automatically adjust online to avoid the drawing resonance area, so as to solve all or part of the technical problems described in the background technology part of the present application.

[0006] The solutions provided by this application to solve its technical problems are:

[0007] A tapered outward wire drawing machine head capable of automatically adjusting online to avoid a wire drawing resonance region comprises:

[0008] Machine head spindle;

[0009] A bearing seat, wherein the bearing seat is provided with a front cone portion and a rear cone portion;

[0010] Front cone sleeve, used to match the front cone;

[0011] Rear cone sleeve, used to match the rear cone;

[0012] The cylinder body is replaced and is set on the front cone sleeve and the rear cone sleeve;

[0013] The sealing cavity is defined and formed by the front cone sleeve, the rear cone sleeve and the replacement cylinder;

[0014] An air filling port, connected to the sealing cavity, for supplying air to the sealing cavity;

[0015] The main shaft of the machine head is assembled on the bearing seat, and the tapers of the front tapered sleeve and the rear tapered sleeve are outward.

[0016] By supplying compressed air from the inflation port and gradually increasing the air pressure of the compressed air, the front and rear cone sleeves can gradually press the bearing seat and the main shaft of the machine head, thereby increasing the rigidity of the machine head; by gradually reducing the air pressure of the compressed air, the front and rear cone sleeves can gradually loosen the bearing seat and the main shaft of the machine head, thereby gradually reducing the rigidity of the machine head.

[0017] Increasing die head rigidity can reduce vibration and noise in the die system and improve equipment precision. However, excessive rigidity can lead to increased friction and elevated temperatures. Maintaining die head rigidity within an appropriate range is beneficial. Because different drawing speeds require different rigidity ranges, existing solutions that pre-adjust die head rigidity are not suitable for actual production needs.

[0018] The wire drawing machine head, for which patent protection is sought, can automatically adjust online to avoid the wire drawing resonance zone. This device uses a vibration sensor to detect the vibration level of the head in real time and feeds it back to the PLC control. A proportional valve (PID) is used to adjust the gas flow and / or pressure, enabling online real-time data acquisition and exchange. The head rigidity adjustment components on the bearing seat, including the front and rear cone sleeves, are dynamically controlled to keep head vibration within an acceptable range. This allows for flexible adaptation to the varying speed requirements of the wire drawing machine, dynamic, closed-loop adjustment of the head rigidity, and the ability to meet actual production needs.

[0019] On the other hand, setting the taper of the front and rear cones of the bearing seat inward, the taper of the front and rear cone sleeves outward and the front and rear cone surfaces facing each other will concentrate the preload on the bearing seat at the front and rear ends of the bearing seat, which is conducive to optimizing the load distribution and meeting the rigidity adjustment needs of different models.

[0020] Preferably, the tapered outward wire drawing machine head capable of automatically adjusting online to avoid the wire drawing resonance area further includes a vibration-damping component; the vibration-damping component is arranged on the front cone and the rear cone.

[0021] Preferably, the vibration-damping component is a vibration-damping ring, a vibration-damping block, a vibration-damping ring or a vibration-damping sleeve.

[0022] The front cone, rear cone, front cone sleeve, rear cone sleeve and vibration-damping components can form a soft support online adjustment system for the machine head, and dynamically and real-timely perform closed-loop adjustment on the machine head rigidity according to the vibration size of the machine head, so as to always keep the vibration of the machine head within an appropriate range.

[0023] Preferably, a tapered sleeve groove is further provided on the bearing seat, and the tapered sleeve groove is located between the front tapered portion and the rear tapered portion; the front tapered sleeve and the rear tapered sleeve are arranged in the tapered sleeve groove.

[0024] Preferably, a vibration-damping component is also provided on the bottom of the horizontal section of the cone sleeve groove.

[0025] Preferably, the tapered outward drawing machine head capable of automatically adjusting online to avoid the drawing resonance area also includes a front seat and a rear seat; the front seat and the rear seat are respectively arranged on the front cone sleeve and the rear cone sleeve; and the front seat and the rear seat are respectively located on the front and rear sides of the changing cylinder.

[0026] The implementation method with the front seat and the rear seat can guide and limit the axial movement of the front and rear cone sleeves respectively through the front and rear seats, thereby improving the stability of the equipment operation during rigidity adjustment.

[0027] Preferably, a limiting groove is provided on the rear cone sleeve; a stop screw hole is provided on the rear seat; a stop screw is provided in the stop screw hole and the end of the stop screw extends into the limiting groove.

[0028] The locking screw can be a common fastener such as an existing screw, bolt, or screw. The limiting groove, locking screw hole, and locking screw can limit the relative rotation and relative sliding between the rear cone sleeve and the rear seat to an appropriate range, preventing excessive rotation and excessive sliding, and ensuring the effectiveness of the equipment operation mechanism.

[0029] Preferably, a stop groove is provided on the rear cone sleeve; the stop groove is used to limit relative rotation between the rear cone sleeve and the bearing seat by cooperating with a stop screw; and the stop groove and the stop screw allow the rear cone sleeve to move axially on the bearing seat. Further preferably, the stop groove is an elongated groove.

[0030] The anti-rotation groove and its anti-rotation screw can prevent relative rotation between the rear cone sleeve and the bearing seat, and when performing rigidity adjustment, the combination of the anti-rotation groove and its anti-rotation screw can also increase the stability and reliability of the rigidity adjustment.

[0031] Preferably, the rear cone and the bearing seat are separate structures; the wire drawing machine head also includes a vibration damping seat; the vibration damping seat is arranged on the bearing seat to form the rear cone; and the vibration damping seat can move axially on the bearing seat. Further preferably, the vibration damping seat is a Hafu type vibration damping seat.

[0032] The rear cone portion of the split structure, also known as the vibration damping seat, allows a certain degree of axial movement of the vibration damping seat relative to the bearing seat, which is beneficial to increasing the vibration damping effect of the machine head.

[0033] Preferably, the tapered outward wire drawing machine head that can automatically adjust online to avoid the wire drawing resonance area also includes a front bearing and a rear bearing; the bearing seat is provided with a front end bearing position and a rear end bearing position; the front bearing and the rear bearing are respectively arranged in the front end bearing position and the rear end bearing position.

[0034] Preferably, the head of the outward-directed wire drawing machine, which can automatically adjust the taper to avoid the wire drawing resonance zone online, also includes a rotating drum, a expansion plate, an upper wire ring, and an end cap. The rotating drum is mounted on the head spindle, the expansion plate is snap-connected to the rotating drum, the upper wire ring is mounted on the front end of the head spindle, and the end cap is mounted on the upper wire ring. The number of expansion plates can be flexibly configured according to actual needs, such as 12 or 18.

[0035] Preferably, the tapered outward wire drawing machine head that can automatically adjust online to avoid the wire drawing resonance area also includes a motor, a coupling, and a motor seat; the motor seat is fixedly assembled on the bearing seat, the coupling is arranged in the motor seat, and the motor is arranged on the motor seat and connected to the rear end of the head main shaft through the coupling.

[0036] Beneficial technical effects:

[0037] 1. The present application discloses a tapered outward wire drawing machine head that can automatically adjust online to avoid the wire drawing resonance area. A pneumatic soft support vibration damping device (including a front cone sleeve, a rear cone sleeve, a vibration damping component, etc.) is provided on the bearing seat of the head main shaft. When the equipment is running, the head vibration can be detected and fed back to the PLC control in real time, and the proportional valve PID adjustment is adopted to realize online real-time data collection and exchange, control the soft support vibration damping device on the bearing seat, and control the vibration within an acceptable range.

[0038] 2. By symmetrically arranging vibration-damping components, such as O-rings, in a stepped manner on the machine head bearing seat, a sealed chamber can be formed between the front and rear cone sleeves, forming a soft support rigidity adjustment mechanism for the machine head consisting of the front and rear cone sleeves and the front and rear seats. Through single-channel inflation in the middle, the two cone sleeves push the symmetrically arranged vibration-damping components outward, achieving online automatic adjustment of the machine head rigidity. This helps reduce component wear, collisions, and operating noise. At the same time, setting the taper of the front and rear cone sleeves to be outward and the tapered surfaces facing each other will concentrate the preload force on the bearing seat at both ends of the bearing seat, which helps optimize load distribution and meet the rigidity adjustment needs of different models.

[0039] The technical solutions and technical effects of this application are described in detail below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 : Schematic diagram of the wire drawing machine head structure of this application;

[0041] Figure 2 : Figure 1 A magnified view of the structure of part A in the middle;

[0042] Figure 3 : Schematic diagram of the front cone sleeve structure;

[0043] Figure 4 : Schematic diagram of the rear cone sleeve structure;

[0044] Figure 5 : Schematic diagram of the vibration damping seat structure;

[0045] Icon Description:

[0046] 10-head spindle, 20-bearing seat, 30-front cone sleeve, 40-rear cone sleeve, 50-replacement barrel, 60-sealing chamber, 70-inflating port, 80-vibration damping component, 90-front seat, 100-rear seat, 200-vibration damping seat, 300-front bearing, 400-rear bearing;

[0047] 210-front cone, 220-rear cone, 230-cone sleeve groove;

[0048] 410-limiting groove, 420-anti-rotation groove;

[0049] 1010-Anti-rotation screw hole. DETAILED DESCRIPTION

[0050] Direction convention: In this application, the side where the motor is located on the wire drawing machine head is the back, and the opposite side is the front.

[0051] Explanation of terminology: Rigidity is a technical term used when discussing the vibration of the machine head. The rigidity of the machine head is related to the vibration of the machine head and the speed of the machine head.

[0052] See also Figures 1-4 , the taper outward drawing machine head that can automatically adjust online to avoid the drawing resonance area includes:

[0053] Machine head spindle 10;

[0054] The bearing seat 20 is provided with a front cone 210, a rear cone 220, and a cone sleeve groove 230;

[0055] The bearing seat 20 is used to support the machine head spindle 10, and the machine head spindle 10 is fixedly assembled in the spindle assembly hole of the bearing seat 20;

[0056] The front cone sleeve 30 is assembled on the bearing seat 20 and is used to cooperate with the front cone 210;

[0057] The rear cone sleeve 40 is assembled on the bearing seat 20 and is used to cooperate with the rear cone 220;

[0058] The front cone sleeve 30 and the rear cone sleeve 40 are arranged in the cone sleeve groove 230 and are tapered outwards with their cone surfaces facing each other.

[0059] The replacement barrel 50 is used to assemble the wire drawing machine head on the wire drawing machine frame and is set on the front cone sleeve 30 and the rear cone sleeve 40;

[0060] A sealed cavity 60 is defined between the front cone sleeve 30, the rear cone sleeve 40, and the cylinder body 50;

[0061] The air filling port 70 is connected to the sealing cavity 60 and is used to supply air to the sealing cavity 60;

[0062] The vibration-damping component 80 may be a vibration-damping ring, a vibration-damping block, a vibration-damping ring or a vibration-damping sleeve, and is disposed on the front cone portion 210 and the rear cone portion 220 .

[0063] The front end of the outward-directed wire drawing machine head, which can automatically adjust the taper to avoid the wire drawing resonance zone online, is configured as follows: a rotating drum, a expansion plate, an upper wire ring, and an end cap. The rotating drum is installed at the front end of the head spindle, the expansion plate is connected to the rotating drum, the upper wire ring is installed at the front end of the head spindle, and the end cap is installed on the upper wire ring.

[0064] The number of expansion plates can be flexibly configured according to actual needs, such as 12 plates, 18 plates, etc. For the card-engaging connection between the expansion plates and the rotating drum, please refer to the Chinese patent: A centrifugal wire grabbing mechanism publication number CN217757269U.

[0065] The rear end of the outward-directed wire drawing machine head, which can automatically adjust the taper to avoid the wire drawing resonance zone online, is configured as follows: a motor, a coupling, and a motor base. The motor base is fixedly assembled on the bearing base, the coupling is set in the motor base, and the motor is set on the motor base and connected to the rear end of the head spindle through the coupling.

[0066] It should be noted that the front-end configuration and rear-end configuration of the above-mentioned head spindle can also refer to various other existing implementation methods in the field. As long as normal wire drawing winding and head barrel changing can be completed, the technical solution of this application can be implemented.

[0067] Principle and effect description:

[0068] The wire drawing machine head is assembled onto the wire drawing machine by replacing the barrel 50 .

[0069] When the motor is started, it can drive the rotating drum, the expansion sheet, the upper wire ring and the end cover to rotate together through the main shaft 10 of the machine head to complete the wire drawing and winding work.

[0070] Air is supplied to the sealing cavity 60 from the inflation port 70; gradually increasing the air pressure of the compressed air can make the front cone sleeve 30 and the rear cone sleeve 40 gradually press the bearing seat 20 through the vibration-damping component 80, thereby achieving the purpose of increasing the rigidity of the machine head; gradually reducing the pressure of the compressed air can make the front cone sleeve 30 and the rear cone sleeve 40 gradually loosen the bearing seat 20 through the vibration-damping component 80, thereby achieving the purpose of gradually reducing the rigidity of the machine head.

[0071] During normal operation of the die, the bearing seat 20, front cone sleeve 30, rear cone sleeve 40, and vibration damping component 80 form a soft-support, online rigidity adjustment mechanism. A vibration sensor detects die vibration in real time and provides feedback to the PLC control. A proportional valve (PID) is used to adjust gas flow and / or pressure, enabling online, real-time data acquisition and exchange. This dynamically controls die rigidity adjustment components on the bearing seat, including the front and rear cone sleeves, to consistently control die vibration within an acceptable range. This allows for flexible adaptation to a wide range of wire drawing machine speed variations, enabling real-time, dynamic adjustment of die rigidity to meet actual production needs.

[0072] The taper of the front cone sleeve 30 and the rear cone sleeve 40 is outward and the front and rear cone surfaces are opposite to each other, which can concentrate the preload force applied by the front and rear cone sleeves on the bearing seat 20 at both ends of the bearing seat 20, which is conducive to optimizing the load distribution and meeting the rigidity adjustment needs of different models, such as extra-long heads.

[0073] In a modified embodiment of the present application, a vibration-damping component 80 is also provided on the bottom of the horizontal section of the cone sleeve groove 230 .

[0074] In a modified embodiment of the present application, the wire drawing machine head further includes a front seat 90 and a rear seat 100; the front seat 90 and the rear seat 100 are respectively disposed on the front cone sleeve 30 and the rear cone sleeve 40; and the front seat 90 and the rear seat 100 are respectively located on either side of the cylinder body 50. The embodiment with the front seat 90 and the rear seat 100 can guide and limit the axial movement of the front and rear cone sleeves, respectively, thereby improving the stability and reliability of the equipment operation during rigidity adjustment.

[0075] In a variant embodiment of the present application, the wire drawing machine head further includes a front bearing 300 and a rear bearing 400. The bearing seat 20 is provided with a front bearing position and a rear bearing position. The front bearing 300 and the rear bearing 400 are respectively disposed within the front bearing position and the rear bearing position. The front and rear bearings enhance the smoothness of the machine head during operation and can also cooperate with the bearing seat 20 to perform online closed-loop adjustment of the machine head rigidity.

[0076] In a modified embodiment of the present application, a limiting groove 410 is further provided on the rear cone sleeve 40 , and a stop screw hole 1010 is provided on the rear seat 100 ; a stop screw is provided in the stop screw hole 1010 and the end of the stop screw extends into the limiting groove 410 .

[0077] The limiting groove 410, the anti-rotation screw hole 1010 and the anti-rotation screw can limit the relative rotation and relative sliding between the rear cone sleeve 40 and the rear seat 100 within an appropriate range, prevent excessive rotation and excessive sliding, and ensure the effectiveness of the equipment operation mechanism.

[0078] In a variant embodiment of the present application, a rotation-stop groove 420 is provided on the rear cone sleeve 40. The rotation-stop groove 420 is used to limit the relative rotation between the rear cone sleeve 40 and the bearing seat 20 by cooperating with a rotation-stop screw. In addition, the rotation-stop groove 420 and the rotation-stop screw allow the rear cone sleeve 40 to move axially on the bearing seat 20. The rotation-stop groove 420 is preferably an elongated groove.

[0079] The anti-rotation groove 420 and its anti-rotation screw can prevent relative rotation between the rear cone sleeve 40 and the bearing seat 20, and when performing rigidity adjustment, the anti-rotation groove 420 and its anti-rotation screw can also increase the stability and reliability of the movement of the rear cone sleeve 40.

[0080] The anti-rotation screw can be a common fastener such as an existing screw, a bolt, or the like.

[0081] In a modified embodiment of the present application, an oil mist channel is further provided on the head spindle 10 and the bearing seat 20, and the oil mist channel is used to complete the lubrication and maintenance of the components or assemblies of the wire drawing machine head.

[0082] See also Figure 5 In a variant embodiment of the present application, a split rear cone 220 may also be employed. Specifically, a separate vibration damping seat 200 is assembled on the bearing seat 20 to form the rear cone 220 of the bearing seat 20. The split rear cone 220 not only performs the aforementioned rigidity adjustment function but also enhances the vibration reduction effect of the handpiece through the axial movement of the vibration damping seat 200 on the bearing seat 20.

[0083] It should be noted that, in the aforementioned various embodiments, gas is used as the driving source. In some variations, liquid such as hydraulic oil may also be used as the driving source.

[0084] The above describes in detail the technical solutions and technical effects of the present application in combination with the drawings and specific implementation methods of the specification. It should be noted that technicians in this field can also develop other implementation methods on this basis; any simple deformation and equivalent substitution that does not deviate from the innovative concept of the present application are covered by the present application and fall within the scope of protection of this patent.

Claims

1. A taper outward drawing machine head capable of automatically adjusting online to avoid a drawing resonance region, including a head spindle (10), characterized in that: Also includes: A bearing seat (20) having a front cone portion (210) and a rear cone portion (220) provided thereon; A front cone sleeve (30) for cooperating with the front cone portion (210); A rear cone sleeve (40) for cooperating with the rear cone portion (220); A replacement cylinder (50) is provided on the front cone sleeve (30) and the rear cone sleeve (40); A sealed cavity (60) is defined and formed by the front cone sleeve (30), the rear cone sleeve (40), and the replacement cylinder (50); An air filling port (70) for supplying air to the sealed cavity (60); The tapers of the front cone sleeve (30) and the rear cone sleeve (40) are outward.

2. The tapered outward wire drawing machine head capable of online automatic adjustment to avoid the wire drawing resonance area according to claim 1, characterized in that: The taper outward drawing machine head capable of automatically adjusting online to avoid the drawing resonance area also includes a vibration reduction component (80); The vibration-damping component (80) is arranged on the front cone portion (210) and the rear cone portion (220).

3. The tapered outward drawing machine head capable of online automatic adjustment to avoid the drawing resonance area according to claim 2, characterized in that: The vibration-damping component (80) is a vibration-damping ring, a vibration-damping block, a vibration-damping ring or a vibration-damping sleeve.

4. The tapered outward wire drawing machine head capable of online automatic adjustment to avoid the wire drawing resonance area according to claim 1, characterized in that: The bearing seat (20) is further provided with a tapered sleeve groove (230), and the tapered sleeve groove (230) is located between the front tapered portion (210) and the rear tapered portion (220); The front cone sleeve (30) and the rear cone sleeve (40) are arranged in the cone sleeve groove (230).

5. The tapered outward wire drawing machine head capable of online automatic adjustment to avoid the wire drawing resonance area according to claim 4, characterized in that: A vibration-damping component (80) is provided on the bottom of the horizontal section of the cone sleeve groove (230).

6. The tapered outward wire drawing machine head capable of online automatic adjustment to avoid the wire drawing resonance area according to claim 1, characterized in that: The taper outward drawing machine head capable of online automatic adjustment to avoid the drawing resonance area also includes a front seat (90) and a rear seat (100); The front seat (90) and the rear seat (100) are respectively arranged on the front cone sleeve (30) and the rear cone sleeve (40); Furthermore, the front seat (90) and the rear seat (100) are respectively located on both sides of the cylinder changing body (50).

7. The tapered outward drawing machine head capable of online automatic adjustment to avoid the drawing resonance region according to claim 6, characterized in that: A limiting groove (410) is provided on the rear cone sleeve (40); The rear seat (100) is provided with a rotation-stopping screw hole (1010); A stop screw is provided in the stop screw hole (1010), and the end of the stop screw extends into the limiting groove (410).

8. The tapered outward wire drawing machine head capable of online automatic adjustment to avoid the wire drawing resonance area according to claim 1, characterized in that: The rear cone sleeve (40) is provided with a rotation-stop groove (420); The anti-rotation groove (420) is used to limit the relative rotation between the rear cone sleeve (40) and the bearing seat (20) by cooperating with the anti-rotation screw; Furthermore, the anti-rotation groove (420) and the anti-rotation screw allow the rear cone sleeve (40) to move axially on the bearing seat (20).

9. The tapered outward wire drawing machine head capable of online automatic adjustment to avoid the wire drawing resonance area according to claim 1, characterized in that: The rear cone (220) and the bearing seat (20) are separate structures; The taper outward drawing machine head capable of online automatic adjustment to avoid the drawing resonance area also includes a vibration damping seat (200); The vibration damping seat (200) is arranged on the bearing seat (20) to form the rear cone (220); Furthermore, the vibration damping seat (200) is capable of axial movement on the bearing seat (20).

10. The tapered outward drawing machine head capable of online automatic adjustment to avoid the drawing resonance area according to claim 1, characterized in that: The taper outward wire drawing machine head capable of online automatic adjustment to avoid the wire drawing resonance area further comprises a front bearing (300) and a rear bearing (400); The bearing seat (20) is provided with a front bearing seat and a rear bearing seat; The front bearing (300) and the rear bearing (400) are respectively arranged in the front bearing position and the rear bearing position.

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