Inward-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 wire drawing machines, and particularly relates to a wire drawing machine head with an inward taper, which can automatically adjust and avoid a wire drawing resonance area on line. The device comprises a machine head main shaft, a bearing seat, a front seat, a rear seat, a front taper sleeve, a rear taper sleeve and a vibration reduction component, the front taper sleeve and the rear taper sleeve are both arranged on the bearing seat, and the conical surfaces are matched with the front conical part and the rear conical part respectively; the front seat is arranged on the bearing seat, and a front sealing cavity is formed between the front seat and the front taper sleeve; the rear seat is arranged on the bearing seat, and a rear sealing cavity is formed between the rear seat and the rear taper sleeve; the front and rear sealing cavities are respectively provided with front and rear inflation ports. PLC control can be fed back through machine head vibration real-time detection, proportional valve PID adjustment is adopted, online real-time data collection and exchange are achieved, a soft supporting vibration reduction device on a bearing seat is controlled, and vibration is controlled within an acceptable range.

Description

Technical Field

[0001] The present application belongs to the technical field of glass fiber drawing machines, and specifically relates to a tapered inward drawing machine head capable of automatically adjusting online to avoid a drawing resonance region. 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 inward 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 taper inward drawing machine head capable of automatically adjusting online to avoid a drawing resonance area comprises a head spindle, a bearing seat, a front seat, a rear seat, a front cone sleeve and a rear cone sleeve; the bearing seat is provided with a spindle hole, a front cone portion and a rear cone portion, and the front cone portion and the rear cone portion are tapered outward; the bearing seat is arranged on the head spindle through the spindle hole; the front cone sleeve and the rear cone sleeve are both arranged on the bearing seat, and the conical surfaces respectively cooperate with the front cone portion and the rear cone portion; the front seat is arranged on the bearing seat and a front sealing cavity is formed between the front seat and the front cone sleeve; the rear seat is arranged on the bearing seat and a rear sealing cavity is formed between the rear seat and the rear cone sleeve; the front sealing cavity is provided with a front inflation port, and the rear sealing cavity is provided with a rear inflation port.

[0008] Gradually increasing the compressed air pressure causes the front and rear taper sleeves to gradually press against the bearing seat and spindle, increasing the spindle system's rigidity. Gradually decreasing the compressed air pressure causes the front and rear taper sleeves to gradually loosen their grip on the bearing seat and spindle, gradually reducing the system's rigidity. Increasing rigidity can reduce spindle system vibration and noise, improving equipment precision. However, excessive rigidity can lead to increased friction and elevated temperatures.

[0009] This patent application seeks to protect a taper inward-facing wire drawing machine head that can automatically adjust online to avoid the wire drawing resonance zone. This device uses a vibration sensor to detect the head vibration 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. This system dynamically controls the head rigidity adjustment components (including the front and rear cone sleeves) on the bearing seat, keeping head vibration within an acceptable range. This allows for flexible adaptation to the varying speed requirements of the wire drawing machine and dynamic adjustment of the head rigidity to meet actual production needs.

[0010] On the other hand, setting the taper of the front and rear cones of the bearing seat to face outward, the taper of the front and rear cone sleeves to face inward, and the front and rear cone surfaces to face each other will concentrate the preload on the bearing seat in the middle part, which is beneficial to optimize the load distribution and meet the rigidity adjustment needs of different models.

[0011] Preferably, vibration-damping components are installed between the front cone sleeve and the bearing seat, as well as between the rear cone sleeve and the bearing seat. These components, installed between the front cone sleeve, the rear cone sleeve, and the bearing seat, form a flexible support rigidity adjustment system for the machine head, reducing component wear, collisions, and operating noise. Further preferably, the vibration-damping components can be vibration-damping rings, vibration-damping blocks, vibration-damping rings, or vibration-damping sleeves.

[0012] Preferably, a front cone sleeve receiving position is provided on the front seat, and the front cone sleeve is partially received in the front cone sleeve receiving position. A front sealing chamber is defined between the front cone sleeve and the front seat. Further preferably, at least two sealing rings are provided between the front cone sleeve and the front seat, and the front sealing chamber is located between the two sealing rings. Further preferably, a front cone surface, a front cavity body matching portion, and a front cone sleeve shaft seat hole are provided on the front cone sleeve. The front cone sleeve is assembled on the bearing seat through the front cone sleeve shaft seat hole, and the front cone surface and the front cone portion cooperate with each other. The portion of the front cone sleeve for connecting to the front seat 3 is provided in the front cone sleeve receiving position, and a front sealing chamber is defined between the front cavity body matching portion and the front seat.

[0013] Preferably, a front axle seat hole is provided on the front seat, and the front seat is arranged on the bearing seat through the front axle seat hole. Further preferably, a vibration damping ring is provided between the front seat and the bearing seat.

[0014] Preferably, a rear cone sleeve receiving position is provided on the rear seat, and the rear cone sleeve is at least partially received in the rear cone sleeve receiving position. A rear sealing cavity is defined between the rear cone sleeve and the rear seat. Further preferably, at least two sealing rings are provided between the rear cone sleeve and the rear seat, and the rear sealing cavity is located between the two sealing rings. Further preferably, a rear cone surface, a rear cavity body matching portion, and a rear cone sleeve shaft seat hole are provided on the rear cone sleeve. The rear cone sleeve is assembled on the bearing seat through the rear cone sleeve shaft seat hole, and the rear cone surface and the rear cone portion cooperate with each other. The portion of the rear cone sleeve for connecting to the rear seat is provided in the rear cone sleeve receiving position, and a rear sealing cavity is defined between the rear cavity body matching portion and the rear seat.

[0015] Preferably, a rear axle seat hole is provided on the rear seat, and the rear seat is arranged on the bearing seat through the rear axle seat hole. Further preferably, a vibration damping ring is provided between the rear seat and the bearing seat.

[0016] As a preference, the inward-facing wire drawing machine head capable of automatically adjusting the taper to avoid the wire drawing resonance area online also includes a changing barrel; the changing barrel is provided with a bearing seat assembly hole; the bearing seat is arranged in the bearing seat assembly hole, and the front seat and the rear seat are respectively located at the front and rear sides of the changing barrel. The changing barrel is used to change the wire drawing machine head

[0017] Preferably, the front cone sleeve and the rear cone sleeve are tapered inwards and their cone surfaces are opposite to each other. Further preferably, the front cone sleeve and the rear cone sleeve are symmetrical in structure so that the load applied to the bearing sleeve is evenly distributed.

[0018] Preferably, the front inflation port is provided on the front seat, and the rear inflation port is provided on the rear seat.

[0019] Preferably, the taper inward drawing machine head, which can automatically adjust online to avoid the wire drawing resonance zone, 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.

[0020] Preferably, the tapered inward 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 head main shaft through the coupling.

[0021] Beneficial technical effects:

[0022] 1. The present application discloses a tapered inward 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.

[0023] 2. By symmetrically arranging vibration-damping components (such as O-rings) in a stepped pattern on the nose bearing seat, a front sealing chamber and a rear sealing chamber are formed between the front cone sleeve and the front seat, and between the rear cone sleeve and the rear seat, respectively. This constitutes a soft-support rigidity adjustment mechanism for the nose, where the front and rear cone sleeves are bidirectionally inflated and pressurized inward, helping to reduce component wear, collisions, and operating noise. Furthermore, by setting the taper of the front and rear cone sleeves inward with their tapered surfaces facing each other, the preload force on the bearing seat is concentrated in the middle of the bearing seat, which helps optimize load distribution and meet the rigidity adjustment requirements of different machine models.

[0024] 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

[0025] Figure 1 : Schematic diagram of the taper inward drawing machine head structure that can automatically adjust online to avoid the drawing resonance area;

[0026] Figure 2 : Figure 1 A magnified view of the structure of part A in the middle;

[0027] Figure 3 : Schematic diagram of the front cone sleeve structure;

[0028] Figure 4 : Schematic diagram of the rear cone sleeve structure;

[0029] Icon Description:

[0030] 10-head spindle, 20-bearing seat, 30-front seat, 40-rear seat, 50-front cone sleeve, 60-rear cone sleeve, 70-barrel replacement, 80-vibration damping component, 90-rotating cylinder, 100-expansion plate, 200-upper wire ring, 300-motor, 400-coupling, 500-motor seat, 600-front bearing, 700-rear bearing, 800-oil mist channel;

[0031] 210-spindle hole, 220-front cone, 230-rear cone 230;

[0032] 310-front cone sleeve receiving position, 320-front axle seat hole;

[0033] 410-rear cone sleeve receiving position, 420-rear axle seat hole;

[0034] 510-front cone surface, 520-front cavity coordination portion, 530-front cone sleeve shaft seat hole;

[0035] 610-rear cone surface, 620-rear cavity coordination part, 630-rear cone sleeve shaft seat hole;

[0036] 710-bearing seat assembly hole;

[0037] 3050-front sealing chamber, 3051-front inflation port, 4060-rear sealing chamber, 4061-rear inflation port. DETAILED DESCRIPTION

[0038] 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.

[0039] 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.

[0040] See also Figure 1-Figure 4 The inward wire drawing machine head can automatically adjust the taper online to avoid the wire drawing resonance area. It includes a head spindle 10, a bearing seat 20, a front seat 30, a rear seat 40, a front cone sleeve 50, a rear cone sleeve 60, a cylinder changer 70, and a vibration damping component 80.

[0041] The bearing seat 20 is provided with a main shaft hole 210, a front cone portion 220, and a rear cone portion 230. The bearing seat 20 is assembled on the main shaft 10 of the machine head through the main shaft hole 210.

[0042] The front seat 30 is provided with a front cone sleeve receiving position 310 and a front axle seat hole 320. The front seat 30 is assembled on the bearing seat 20 through the front axle seat hole 310.

[0043] The rear seat 40 is provided with a rear cone sleeve accommodating position 410 and a rear axle seat hole 420. The rear seat 40 is assembled on the bearing seat 20 through the rear axle seat hole 420.

[0044] The front cone sleeve 50 is provided with a front conical surface 510, a front cavity-coordinating portion 520, and a front cone sleeve shaft seat hole 530. The front cone sleeve 50 is assembled to the bearing seat 20 via the front cone sleeve shaft seat hole 530, with the front conical surface 510 and the front cone portion 220 interfitting with each other. The portion of the front cone sleeve 50 that connects to the front seat 30 is located within the front cone sleeve receiving portion 310, and a front sealing chamber 3050 is defined between the front cavity-coordinating portion 520 and the front seat 30.

[0045] The rear cone sleeve 60 is provided with a rear conical surface 610, a rear cavity matching portion 620, and a rear cone sleeve shaft seat hole 630. The rear cone sleeve 60 is assembled on the bearing seat 20 through the rear cone sleeve shaft seat hole 630, with the rear conical surface 610 and the rear cone portion 230 interfitting with each other. The portion of the rear cone sleeve 60 that connects to the rear seat 40 is located within the rear cone sleeve receiving portion 410. The rear cavity matching portion 620 and the rear seat 40 define a rear sealing cavity 4060.

[0046] The front seat 30 is provided with a front inflation port 3051 , and the rear seat 40 is provided with a rear inflation port 4061 . The front inflation port 3051 is connected to the front sealed cavity 3050 , and the rear inflation port 4061 is connected to the rear sealed cavity 4060 .

[0047] The cylinder body 70 is provided with a bearing seat assembly hole 710, and the bearing seat 20 is assembled in the bearing seat assembly hole 710. The front seat 30 and the rear seat 40 are respectively located at the front and rear sides of the cylinder body 70.

[0048] A vibration-damping ring, or vibration-damping component 80, is provided between the front cone surface 510 and the front cone portion 220, and between the rear cone surface 610 and the rear cone portion 230. In a modified embodiment, the vibration-damping component 80 may also be a vibration-damping block, a vibration-damping ring, a vibration-damping sleeve, or the like.

[0049] The front cone portion 220 and the rear cone portion 230 taper outward, while the front cone sleeve 50 and the rear cone sleeve 60 taper inward, with the front and rear cone surfaces facing each other.

[0050] The inward-facing wire drawing machine head, which can automatically adjust the taper to avoid the wire drawing resonance zone online, also includes a rotating drum 90, an expansion plate 100, an upper wire ring 200, and an end cap. The rotating drum 90 is arranged at the front end of the head spindle 10, the expansion plate 100 is snap-fitted to the rotating drum 90, the upper wire ring 200 is arranged at the front end of the head spindle 10, and the end cap is mounted on the upper wire ring 200.

[0051] The number of the expansion plates 100 can be flexibly configured according to actual needs, such as 12, 18, etc. For the engagement connection between the expansion plates 100 and the rotating drum 90, please refer to the Chinese patent: A centrifugal wire grabbing mechanism (publication number CN217757269U).

[0052] The taper inward wire drawing machine head that can automatically adjust online to avoid the wire drawing resonance area also includes a motor 300, a coupling 400, and a motor base 500; the motor base 500 is fixedly assembled on the bearing base 20, the coupling 400 is arranged in the motor base 500, and the motor 300 is arranged on the motor base 500 and is connected to the head main shaft 10 through the coupling 400.

[0053] Principle and effect description:

[0054] The wire drawing machine head is assembled on the wire drawing machine by replacing the barrel 70. When the motor 300 is started, it can drive the rotating drum 90, the expansion plate 100, the upper wire ring 200, and the end cover to rotate together through the head main shaft 10, thereby completing the wire drawing and winding work.

[0055] During normal operation, the die head's bearing seat 20, front seat 30, rear seat 40, front cone sleeve 50, rear cone sleeve 60, and vibration damping component 80 form a soft-support, online rigidity adjustment mechanism. A vibration sensor detects die head vibration in real time and provides feedback to the PLC control. A proportional valve (PID) regulates gas flow and / or pressure, enabling online, real-time data acquisition and exchange. This dynamically controls the die head rigidity adjustment components (including the front and rear cone sleeves) on the bearing seat, keeping die head vibration within acceptable limits. This allows for flexible adaptation to varying wire drawing machine speeds, enabling real-time, dynamic adjustment of die head rigidity to meet actual production needs.

[0056] The taper of the front cone sleeve 50 and the rear cone sleeve 60 is inward and the front and rear cone surfaces are opposite, which can concentrate the preload force applied by the front and rear cone sleeves on the bearing seat 20 in the middle part of the bearing seat 20, which is conducive to optimizing the load distribution and meeting the rigidity adjustment needs of different models.

[0057] In a modified embodiment of the present application, relative rotation between the rear seat 40 and the bearing seat 20 is limited by a stop screw.

[0058] In a modified embodiment of the present application, a front bearing 600 and a rear bearing 700 are further provided between the bearing seat 20 and the head spindle 10 .

[0059] In a variant embodiment of the present application, the wire drawing machine head further includes a sheet expansion and retraction mechanism for controlling the expansion of the sheet 100 on the rotating drum 90. For details on the sheet expansion and retraction mechanism, please refer to the Chinese patent application: A Support Device for the Intermediate Conical Sleeve of a Sheet Expansion Machine Head (Publication No. CN213803526U).

[0060] In a modified embodiment of the present application, an oil mist channel 800 is further provided on the head spindle 10 and the bearing seat 20, and the oil mist channel 800 is used to complete the lubrication and maintenance of the components or assemblies of the wire drawing machine head.

[0061] 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.

[0062] The above describes the technical solution and technical effects of the present application in detail in combination with the drawings and specific embodiments of the specification. It should be noted that technicians in this field can also develop other embodiments 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 inward drawing machine head capable of automatically adjusting online to avoid a drawing resonance region, including a head spindle (10), characterized in that: It also includes a bearing seat (20), a front seat (30), a rear seat (40), a front cone sleeve (50), and a rear cone sleeve (60); The bearing seat (20) is provided with a main shaft hole (210), a front cone (220), and a rear cone (230), and the front cone (220) and the rear cone (230) are tapered outwards; The bearing seat (20) is arranged on the machine head spindle (10) through the spindle hole (210); The front cone sleeve (50) and the rear cone sleeve (60) are both arranged on the bearing seat (20), and the cone surfaces respectively cooperate with the front cone portion (220) and the rear cone portion (230); The front seat (30) is arranged on the bearing seat (20) and forms a front sealing cavity (3050) between the front seat and the front cone sleeve (50); The rear seat (40) is arranged on the bearing seat (20) and forms a rear sealing cavity (4060) between the rear seat and the rear cone sleeve (60); The front sealed cavity (3050) is provided with a front inflation port (3051), and the rear sealed cavity (4060) is provided with a rear inflation port (4061).

2. The tapered inward wire drawing machine head capable of online automatic adjustment to avoid the wire drawing resonance area according to claim 1, characterized in that: A front cone sleeve accommodating position (310) is provided on the front seat (30), and the front cone sleeve (50) is partially accommodated in the front cone sleeve accommodating position (310).

3. The tapered inward wire drawing machine head capable of online automatic adjustment to avoid the wire drawing resonance area according to claim 2, characterized in that: A front axle seat hole (320) is provided on the front seat (30), and the front seat (30) is arranged on the bearing seat (20) through the front axle seat hole (320).

4. The tapered inward wire drawing machine head capable of online automatic adjustment to avoid the wire drawing resonance area according to claim 1, characterized in that: A rear cone sleeve accommodating position (410) is provided on the rear seat (40), and the rear cone sleeve (60) is at least partially accommodated in the rear cone sleeve accommodating position (410).

5. The tapered inward drawing machine head capable of online automatic adjustment to avoid the drawing resonance area according to claim 4, characterized in that: A rear axle seat hole (420) is provided on the rear seat (40), and the rear seat (40) is arranged on the bearing seat (20) through the rear axle seat hole (420).

6. The tapered inward drawing machine head capable of online automatic adjustment to avoid the drawing resonance area according to claim 1, characterized in that: Also includes a barrel change (70); The changing cylinder (70) is provided with a bearing seat assembly hole (710); The bearing seat (20) is arranged in the bearing seat assembly hole (710), and the front seat (30) and the rear seat (40) are respectively located at the front and rear sides of the change cylinder (70).

7. The tapered inward drawing machine head capable of online automatic adjustment to avoid the drawing resonance region according to claim 1, characterized in that: The front cone sleeve (50) and the rear cone sleeve (60) are tapered inwards and have opposite cone surfaces; A vibration-damping component (80) is provided between the front cone sleeve (50) and the bearing seat (20), and between the rear cone sleeve (60) and the bearing seat (20).

8. The tapered inward drawing machine head capable of online automatic adjustment to avoid the drawing resonance region according to claim 1, characterized in that: It also includes a rotating drum (90), an expansion sheet (100), and an upper wire ring (200); The rotating cylinder (90) is arranged on the machine head main shaft (10), the expansion piece (100) is snap-fitted and connected to the rotating cylinder (90), and the upper wire ring (200) is arranged at the front end of the machine head main shaft (10).

9. The tapered inward wire drawing machine head capable of online automatic adjustment to avoid the wire drawing resonance area according to claim 1, characterized in that: Also includes a motor (300), a coupling (400), and a motor base (500); The motor seat (500) is fixedly assembled on the bearing seat (20), the coupling (400) is arranged in the motor seat (500), and the motor (300) is arranged on the motor seat (500) and connected to the machine head spindle (10) through the coupling (400).

10. The tapered inward wire drawing machine head capable of online automatic adjustment to avoid the wire drawing resonance area according to claim 1, characterized in that: The front inflation port (3051) is provided on the front seat (30), and the rear inflation port (4061) is provided on the rear seat (40).

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