Drawing machine head capable of automatically adjusting to avoid drawing resonance area and control method thereof

Abstract

This application belongs to the technical field of glass fiber drawing machines, specifically relating to a drawing machine head capable of automatically adjusting online to avoid the resonance zone during fiber drawing, and its control method. It includes three solutions: face-to-face tapered inward adjustment, back-to-back tapered outward adjustment, and a rear-end disc pneumatic mechanism. The face-to-face tapered inward adjustment solution uses bidirectional air inflation of the front and rear cone sleeves to press the vibration damping components inward; the back-to-back tapered outward adjustment solution forms a sealed cavity between the front and rear cone sleeves, and uses single-path air inflation in the middle to push the two cone sleeves outward against the symmetrically arranged, stepped vibration damping components; the rear-end disc pneumatic mechanism arranges vibration damping components on the circumference of the bearing seat, and adjusts the resonance range through air inflation using a rear-end disc clamping device. The drawing machine head and its control method disclosed in this application, capable of automatically adjusting online to avoid the resonance zone during fiber drawing, can achieve automated closed-loop adjustment of the machine head rigidity using vibration sensors, electronic control systems, and other components or assemblies, thus achieving the technical effect of flexibly avoiding the resonance zone during fiber drawing.

Description

Technical Field

[0001] This application belongs to the technical field of glass fiber drawing machines, specifically relating to a drawing machine head that can automatically adjust online to avoid the drawing resonance area and its control method. Background Technology

[0002] Because the fiberglass drawing process is complex, involves many varieties, and has a wide speed range, resonance is inevitable when the drawing machine head rotates. In particular, Teflon tubes are made by circumferentially stacking and bonding, resulting in a large imbalance. When several tubes are installed on a line, it is difficult for the machine head to overcome resonance. If it operates in this section, it will lead to a shortened bearing life or even damage, as well as 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 during wire drawing, so they basically use two types of wire drawing machines, namely high-speed and low-speed machines. This means that users need to increase their investment. However, some so-called high-speed and low-speed models on the market have not completely overcome the resonance problem, which causes great trouble for users.

[0004] Please refer to our prior Chinese patent: A machine head soft support rigidity adjustment mechanism, publication number: CN214299890U. Its disadvantage is that a certain speed range must be selected, and the machine head support rigidity must be manually adjusted to a suitable operating range to avoid the resonance zone. However, this selective manual adjustment method is no longer sufficient for the manufacturing of current high-end composite material products. Due to the high speed of high-end product lines and the large length of yarn mileage (i.e., large rolls of yarn with small inner diameter and extremely large outer diameter), the difference between the initial and final speeds is significant, resulting in the manual adjustment range not being sufficient for a given operating range. Summary of the Invention

[0005] In view of this, this application provides a wire drawing machine head that can automatically adjust online to avoid the wire drawing resonance region and its control method, so as to solve all or part of the technical problems described in the background section of this application.

[0006] The inventive concept of this application is to develop a flexible die head structure that can adjust the rigidity of the die head in real time online. By using components or parts such as vibration sensors, electrically controlled valves, flow detectors, and electrical control systems, the rigidity of the die head can be automatically adjusted in a closed loop, thereby achieving the technical effect of flexibly avoiding the wire drawing resonance area.

[0007] The solution provided in this application to resolve its technical problem is as follows:

[0008] A wire drawing machine head capable of automatically adjusting online to avoid the wire drawing resonance area includes a head spindle, a bearing housing, at least one fixed component, at least one movable component, and at least one vibration damping component. The bearing housing is mounted on the head spindle. The fixed component, movable component, and vibration damping component are all mounted on the bearing housing. The movable component can move on the bearing housing. A sealed cavity is formed between the fixed component and the movable component. An air inlet is provided on the sealed cavity. Compressed air is supplied to the sealed cavity through the air inlet, which can drive the movable component to squeeze the vibration damping component, thereby adjusting the rigidity of the head through the vibration damping component.

[0009] The technical solutions of this application include three types: face-to-face tapered inward, back-to-back tapered outward, and rear-end disc pneumatic mechanism. The face-to-face tapered inward solution uses bidirectional air inflation of the front and rear tapered sleeves to press the vibration damping components inward; the back-to-back tapered outward solution forms a sealed cavity between the front and rear tapered sleeves, and uses single-path air inflation in the middle to push the two tapered sleeves outward against the symmetrically arranged, stepped vibration damping components; the rear-end disc pneumatic mechanism arranges the vibration damping components on the circumference of the bearing housing, and adjusts the resonance range through air inflation using a rear-end disc clamping device. These are described in detail below.

[0010] In the face-to-face taper inward solution, the fixed parts include a front seat and a rear seat; the moving parts include a front tapered sleeve and a rear tapered sleeve; the bearing housing is provided with a front tapered portion and a rear tapered portion; the front tapered portion of the front tapered sleeve and the front tapered portion of the rear tapered sleeve cooperate with each other; the tapers of the front tapered sleeve and the rear tapered sleeve are inward and the tapered surfaces are opposite each other; vibration damping components are provided between the front tapered portions and on the rear tapered portion.

[0011] As a preferred solution for face-to-face tapered inwards operation, the wire drawing machine head also includes a changing cylinder; the bearing housing is mounted on the changing cylinder, with the front and rear seats located on the front and rear sides of the changing cylinder, respectively.

[0012] As a preferred face-to-face tapered inward solution, the sealing cavity includes a front sealing cavity and a rear sealing cavity; the inflation port includes a front inflation port and a rear inflation port; the front sealing cavity is defined between the front seat and the front cone sleeve, and the rear sealing cavity is defined 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.

[0013] As a preferred back-to-back taper-outward solution, the fixed component includes a cylinder body; the moving component includes a front tapered sleeve and a rear tapered sleeve; the bearing housing is provided with a front tapered portion, a rear tapered portion, and a tapered sleeve groove located between the front tapered portion and the rear tapered portion; both the front tapered sleeve and the rear tapered sleeve are located within the tapered sleeve groove; the front tapered sleeve and the front tapered portion cooperate with each other; the rear tapered sleeve and the rear tapered portion cooperate with each other; the taper of the front tapered sleeve and the rear tapered sleeve is outward and the tapered surfaces are opposite to each other; both the front tapered portion and the rear tapered portion are provided with vibration damping components.

[0014] As a preferred back-to-back tapered outward solution, the wire drawing machine head also includes a front seat and a rear seat; the front seat and the rear seat are respectively located on the front and rear sides of the changing cylinder.

[0015] As a preferred back-to-back tapered outward solution, a sealing cavity is defined between the cylinder body, the front cone sleeve, and the rear cone sleeve. The air inlet is located on the cylinder body.

[0016] As a preferred solution for a rear-end disc pneumatic mechanism, the fixed components include a cylinder and a rear seat; the moving components include a piston; the piston is assembled in the cylinder, and a sealed cavity is defined between the piston and the cylinder; and vibration damping components are disposed on the rear seat and / or the piston.

[0017] As a preferred solution for a rear-end disc pneumatic mechanism, the moving part also includes a disc; the disc includes a horizontal part and a vertical part; the vertical part is located between the rear seat and the piston.

[0018] The control methods corresponding to the aforementioned solutions are as follows:

[0019] A control method for an online automatic adjustment of the wire drawing machine head to avoid the wire drawing resonance region includes the following steps:

[0020] The head vibration detection step involves using a vibration sensor to detect head vibration data in real time.

[0021] The rigid closed-loop adjustment process involves determining whether the head vibration is within the normal range based on the detected head vibration data. If the head vibration exceeds the normal range, air is supplied to the sealing cavity. The moving parts are driven to compress the vibration damping components to adjust the head rigidity online until the head vibration is within the normal range.

[0022] Beneficial technical effects:

[0023] 1. The wire drawing machine head disclosed in this application can automatically adjust online to avoid the wire drawing resonance area. The bearing seat of the main shaft of the head is equipped with a pneumatic soft support vibration damping device. When the equipment is running, the vibration of the head can be detected and fed back to the PLC control in real time. The proportional valve PID regulation is adopted to realize online real-time data acquisition and exchange, control the soft support vibration damping device on the bearing seat, control the vibration within an acceptable range, and realize online closed-loop adjustment of the rigidity of the wire drawing machine head.

[0024] 2. In the face-to-face tapered inward solution of this application, the preload on the bearing housing is concentrated in the middle part of the bearing housing, while in the back-to-back tapered outward solution, the preload on the bearing housing is concentrated at both ends of the bearing housing. This is beneficial for optimizing the preload load distribution and meeting the rigidity adjustment needs of different models. The rear-end disc pneumatic mechanism solution can adjust the rigidity of the machine head simultaneously from both axial and radial directions, which helps to ensure the effect of machine head rigidity adjustment.

[0025] 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

[0026] Figure 1 Schematic diagram of the cross-section of the face-to-face tapered inward solution;

[0027] Figure 2 : Figure 1 Enlarged view of the structure of part A in the middle;

[0028] Figure 3 Schematic diagram of the cross-section of the back-to-back tapered outward solution;

[0029] Figure 4 : Figure 3 Enlarged view of the structure of part B in the middle section;

[0030] Figure 5 : Schematic diagram of the cross-section of the rear disc pneumatic mechanism;

[0031] 1-Main shaft of the machine head; 2-Bearing housing; 3-Fixed component; 4-Moving component; 5-Vibration damping component; 6-Cylinder changing body;

[0032] 34-Sealed cavity; 341-Inflation port;

[0033] 21 - Front cone; 22 - Rear cone;

[0034] 31 - Front seat; 32 - Rear seat;

[0035] 41-Front cone sleeve; 42-Rear cone sleeve;

[0036] 10-Main shaft of the machine head; 20-Bearing housing; 30-Fixed parts; 40-Moving parts; 50-Vibration damping components; 60-Cylinder replacement body;

[0037] 3040 - Sealed cavity; 3041 - Inflation port;

[0038] 210 - Front conical part, 220 - Rear conical part; 230 - Conical sleeve groove;

[0039] 310 - Front seat; 320 - Rear seat;

[0040] 410 - Front cone sleeve; 420 - Rear cone sleeve;

[0041] 100-Main shaft of the machine head; 200-Bearing housing; 300-Fixed parts; 400-Moving parts; 500-Vibration damping components; 600-Cylinder replacement body;

[0042] 3100-front seat;

[0043] 3400 - Sealed cavity; 3410 - Inflation port;

[0044] 3010 - Cylinder block; 3020 - Rear seat;

[0045] 4010 - Piston, 4020 - Disc;

[0046] 4021 - Horizontal part, 4022 - Vertical part. Detailed Implementation

[0047] Directional convention: In this application, the side of the wire drawing machine head where the motor is located is considered the rear, and the opposite side is considered the front.

[0048] Terminology Explanation: Head rigidity is a technical term used when discussing head vibration. The magnitude of head rigidity is related to the magnitude of head vibration and the head rotation speed.

[0049] Please see Figures 1-2 In the face-to-face tapered inward solution of this application, the wire drawing machine head includes:

[0050] Machine head spindle 1;

[0051] The bearing housing 2 is provided with a front tapered portion 21 and a rear tapered portion 22, and the tapers of the front tapered portion 21 and the rear tapered portion 22 are outward;

[0052] Two fasteners 3, namely the front seat 31 and the rear seat 32;

[0053] The two movable parts 4 are the front cone sleeve 41 and the rear cone sleeve 42;

[0054] Several vibration damping components 5 are provided on the front cone 21 and the rear cone 22, and can be vibration damping rings, vibration damping blocks, vibration damping rings, vibration damping sleeves, etc.

[0055] Bearing housing 2 is mounted on the head spindle 1;

[0056] The front seat 31, the rear seat 32, the front tapered sleeve 41, and the rear tapered sleeve 42 are all mounted on the bearing housing 2;

[0057] The front cone sleeve 41 and the front cone part 21 cooperate with each other, and the rear cone sleeve 42 and the rear cone part 22 cooperate with each other;

[0058] The front tapered sleeve 41 and the rear tapered sleeve 42 have inward tapers and their tapered surfaces face each other;

[0059] The sealing cavity 34 includes a front sealing cavity and a rear sealing cavity. The front sealing cavity is defined between the front seat 31 and the front cone sleeve 41, and the rear sealing cavity is defined between the rear seat 32 and the rear cone sleeve 42.

[0060] The inflation port 341 includes a front inflation port and a rear inflation port. The front inflation port is located on the front sealing cavity, and the rear inflation port is located on the rear sealing cavity.

[0061] Explanation of principles and effects:

[0062] Air is supplied to the front and rear sealing chambers 34 from the front and rear air inlets 341 respectively; gradually increasing the air pressure of the compressed air allows the front tapered sleeve 41 and the rear tapered sleeve 42 to gradually press the bearing seat 2 and the machine head spindle 1 through the vibration damping component 5, thereby increasing the rigidity of the machine head; gradually decreasing the air pressure of the compressed air allows the front tapered sleeve 41 and the rear tapered sleeve 42 to gradually loosen the bearing seat 2 and the machine head spindle 1 through the vibration damping component 5, thereby gradually reducing the rigidity of the machine head.

[0063] For general wire drawing machines, increasing the rigidity of the die head can reduce vibration and noise in the spindle system and increase the accuracy of equipment operation. However, excessive rigidity may lead to increased friction and higher temperatures. Therefore, it is necessary and meaningful to adjust the rigidity of the die head online in real time according to the actual rotational speed of the wire drawing machine.

[0064] This application seeks patent protection for a wire drawing machine head capable of automatically adjusting online to avoid resonance areas during wire drawing. When the head is operating normally, the bearing housing 2, front seat 31, rear seat 32, front tapered sleeve 41, rear tapered sleeve 42, and vibration damping component 5 form an online rigid adjustment mechanism for the head's soft support. It can detect the magnitude of head vibration in real time via vibration sensors and feed it back to the PLC control system. A proportional valve (PID) is then used to adjust the gas flow and / or pressure, achieving online real-time data acquisition and exchange. This dynamically controls the head rigidity adjustment components (including the front and rear tapered sleeves) on the bearing housing, keeping the head vibration within an acceptable range. Therefore, it can flexibly adapt to different speed requirements of the wire drawing machine, dynamically and in a closed-loop manner adjusting the head rigidity to meet actual production needs.

[0065] On the other hand, in this embodiment, the taper of the front cone 21 and the rear cone 22 of the bearing housing 2 is set to be outward, and the taper of the front cone sleeve 41 and the rear cone sleeve 42 is set to be inward and the front and rear cone surfaces are opposite each other. This will cause the preload force on the bearing housing 2 to be concentrated in the middle part of the bearing housing 2, which is beneficial to optimize the distribution of preload load and meet the rigidity adjustment needs of different models (such as applicable to large diameter machine heads).

[0066] In a variation of this embodiment, the wire drawing machine head capable of automatically adjusting online to avoid the wire drawing resonance area further includes a changing cylinder body 6; the changing cylinder body 6 is provided with a bearing seat assembly hole, the bearing seat 2 is disposed in the bearing seat assembly hole, and the front seat 31 and the rear seat 32 are respectively located on the front and rear sides of the changing cylinder body 6. The changing cylinder body 6 is used to assemble the wire drawing machine head onto the wire drawing machine.

[0067] In a modified embodiment of this invention, the wire drawing machine head capable of automatically adjusting online to avoid the wire drawing resonance area further includes a rotating drum, expansion plates, a wire feeding ring, and an end cap. The rotating drum is located at the front end of the machine head main shaft 1, the expansion plates are snapped onto the rotating drum, the wire feeding ring is located at the front end of the machine head main shaft, and the end cap is located on the wire feeding ring. The number of expansion plates can be flexibly configured according to actual needs, such as 12 plates, 18 plates, etc. For the snap-fit ​​connection relationship between the expansion plates and the rotating drum, please refer to Chinese Patent: A Centrifugal Wire Gripping Mechanism (Publication No. CN217757269U).

[0068] In a variation of this embodiment, the wire drawing machine head capable of automatically adjusting online to avoid the wire drawing resonance area further includes a motor, a coupling, and a motor mount; the motor mount is fixedly mounted on the bearing seat 2, the coupling is disposed inside the motor mount, and the motor is disposed on the motor mount and connected to the main shaft 1 of the machine head through the coupling.

[0069] When the motor starts, it can drive the drum, expansion plate, wire ring and end cover to rotate together through the main shaft 1 of the machine head to complete the wire drawing and winding work.

[0070] In a variation of this embodiment, the relative rotation between the rear seat 32 and the bearing seat 2 is restricted by an anti-rotation screw.

[0071] In a variation of this embodiment, a front bearing and a rear bearing are further provided between the bearing housing 2 and the head spindle 1.

[0072] In a variation of this embodiment, the wire drawing machine head further includes a sheet expansion mechanism, which is used to control the expansion and contraction of the sheet on the rotating drum. For details on the sheet expansion mechanism, please refer to Chinese Patent: A Machine Head Sheet Expansion Sheet Intermediate Conical Sleeve Support Device (Publication No. CN213803526U).

[0073] In a variation of this embodiment, an oil mist channel is also provided on the head spindle 1 and the bearing seat 2. The oil mist channel is used to complete the lubrication and maintenance of the components or parts of the wire drawing machine head.

[0074] Please see Figures 3-4 In the back-to-back tapered outward solution of this application, the wire drawing machine head includes:

[0075] Machine head spindle 10;

[0076] The bearing housing 20 is provided with a front tapered portion 210, a rear tapered portion 220 and a tapered sleeve groove 230 located between the front tapered portion 210 and the rear tapered portion 220, and the taper of the front tapered portion 210 and the rear tapered portion 220 is inward;

[0077] Fastener 30, including the cylinder body 60;

[0078] The movable part 40 includes a front cone sleeve 410 and a rear cone sleeve 420;

[0079] The bearing housing 20 is mounted on the head spindle 10;

[0080] Both the front tapered sleeve 410 and the rear tapered sleeve 420 are located within the tapered sleeve groove 230;

[0081] The front cone sleeve 410 and the front cone portion 210 are mutually fitted together;

[0082] The rear cone sleeve 420 and the rear cone portion 220 are mutually fitted together;

[0083] The front tapered sleeve 410 and the rear tapered sleeve 420 have outward tapers and opposite tapered surfaces;

[0084] Several vibration damping components 50 are disposed on the front cone 210 and the rear cone 220;

[0085] The sealing cavity 3040 is defined by the changing cylinder 60, the front cone sleeve 410, and the rear cone sleeve 420;

[0086] The air inlet 3041 is used to supply air to the sealing cavity 3040.

[0087] Explanation of principles and effects:

[0088] Air is supplied from the air inlet 3041 to the sealing cavity 3040; gradually increasing the compressed air pressure allows the front tapered sleeve 410 and the rear tapered sleeve 420 to gradually press the bearing seat 20 and the machine head spindle 10 through the vibration damping component 50, thereby increasing the rigidity of the machine head; gradually decreasing the compressed air pressure allows the front tapered sleeve 410 and the rear tapered sleeve 420 to gradually loosen the bearing seat 20 and the machine head spindle 10 through the vibration damping component 50, thereby gradually reducing the rigidity of the machine head.

[0089] The technical solution and its effects of adjusting the rigidity of the machine head online and in a closed loop based on the machine head rotation speed are similar to those of the first preferred implementation method, and will not be described in detail here.

[0090] On the other hand, in this embodiment, the taper of the front tapered portion 210 and the rear tapered portion 220 of the bearing housing 20 is set to be outward, and the taper of the front tapered sleeve 410 and the rear tapered sleeve 420 is set to be inward and the front and rear tapered surfaces are opposite each other. This will cause the preload force on the bearing housing 20 to be concentrated at both ends of the bearing housing 20, which is beneficial to optimize the distribution of preload load and meet the rigidity adjustment needs of different models (such as for use in ultra-long shaft machine heads).

[0091] In a variation of this embodiment, the wire drawing machine head capable of automatically adjusting online to avoid the wire drawing resonance area further includes a front seat 310 and a rear seat 320; the front seat 310 and the rear seat 320 are respectively disposed on the front and rear sides of the changing cylinder 60.

[0092] In this embodiment, the front-end configuration (rotating drum, expanding plate, threading ring, end cover, etc.) and rear-end configuration (motor, coupling, motor base, etc.) of the machine head, as well as the lubrication circuit, front and rear bearings, rotation limiting components, and expanding plate telescopic mechanism, are similar to those in the first preferred embodiment and will not be described in detail.

[0093] Please see Figure 5 In the rear-end disc pneumatic mechanism solution of this application, the wire drawing machine head includes:

[0094] Machine head spindle 100;

[0095] Bearing housing 200, which is mounted on the head spindle 100;

[0096] The fixing component 300 includes a cylinder body 3010 and a rear seat 3020, both of which are mounted on the bearing housing 200;

[0097] The moving part 400 includes a piston 4010, which is assembled inside the cylinder 3010;

[0098] Vibration damping component 500 is disposed on rear seat 3020 and / or piston 4010;

[0099] The sealed cavity 3400 is formed by the cylinder body 3010 and the piston 4010;

[0100] The air inlet 3410 is connected to the sealing cavity 3400 and is used to supply air to the sealing cavity 3400.

[0101] Explanation of principles and effects:

[0102] Air is supplied from the air inlet 3410 to the sealing cavity 3400; gradually increasing the compressed air pressure allows the piston 4010 to gradually press against the rear seat 3020 through the vibration damping component 500, thereby increasing the rigidity of the machine head; gradually decreasing the compressed air pressure allows the piston 4010 to gradually loosen the bearing seat 200 and the machine head spindle 100 through the vibration damping component 500, thereby gradually reducing the rigidity of the machine head.

[0103] The technical solution and its effects of adjusting the rigidity of the machine head online and in a closed loop based on the machine head rotation speed are similar to those of the first preferred implementation method, and will not be described in detail here.

[0104] On the other hand, in this embodiment, uniform vibration damping components 500 are arranged on the circumference of the bearing housing 200, and the resonance range of the machine head is adjusted by air inflation through the rear disc clamping mechanism.

[0105] In a variation of this embodiment, a vibration damping component 500 is provided on the bearing housing 200, and the vibration damping component 500 is located between the rear seat 3020 and the bearing housing 200.

[0106] In a modified embodiment of this example, the movable component 400 further includes a disc 4020; the disc 4020 includes a horizontal portion 4021 and a vertical portion 4022; the vertical portion 4022 is located between the rear seat 3020 and the piston 4010. Vibration damping components 500 are provided on both the rear seat 3020 and the piston 4010 at locations corresponding to the vertical portion 4022.

[0107] In a variation of this embodiment, the wire drawing machine head further includes a front seat 3100, which is disposed on the bearing seat 200. A vibration damping component 500 is disposed on the bearing seat 200 at a position corresponding to the front seat 3100; that is, a vibration damping component 500 is also disposed between the front seat 3100 and the bearing seat 200.

[0108] In a variation of this embodiment, the wire drawing machine head further includes a changing cylinder body 600, which is provided with a bearing seat assembly hole. The bearing seat 200 is assembled in the bearing seat assembly hole, and the front seat 3100 and the rear seat 3020 are respectively provided on both sides of the changing cylinder body 600.

[0109] In embodiments where damping components 500 are provided between the piston 4010 and the rear seat 3020, between the front seat 3100 and the bearing housing 200, and between the rear seat 3020 and the bearing housing 200, the rigidity of the machine head can be adjusted simultaneously in both axial (via the damping components 500 provided between the piston 4010 and the rear seat 3020) and radial (via the damping components 500 provided between the front and rear seats and the bearing housing 200) directions by compressed air. This helps to ensure the effectiveness of the machine head rigidity adjustment.

[0110] In this embodiment, the front-end configuration (rotating drum, expanding plate, threading ring, end cover, etc.) and rear-end configuration (motor, coupling, motor base, etc.) of the machine head, as well as the lubrication circuit, front and rear bearings, rotation limiting components, and expanding plate telescopic mechanism, are similar to those in the first preferred embodiment and will not be described in detail.

[0111] The key points of the wire drawing machine head and its control method of this application are summarized below in conjunction with the three specific embodiments described above:

[0112] A wire drawing machine head capable of automatically adjusting online to avoid the wire drawing resonance zone includes:

[0113] Head spindle (1; 10; 100);

[0114] Bearing housing (2; 20; 200);

[0115] At least one fastener (3; 30; 300);

[0116] At least one active component (4; 40; 400);

[0117] At least one vibration damping component (5; 50; 500);

[0118] The bearing housings (2; 20; 200) are mounted on the head spindle (1; 10; 100);

[0119] The fixed parts (3; 30; 300), the movable parts (4; 40; 400), and the vibration damping components (5; 50; 500) are all mounted on the bearing housing (2; 20; 200);

[0120] The movable parts (4; 40; 400) are capable of moving on the bearing housing (2; 20; 200);

[0121] A sealing cavity (34; 30; 300) is formed between the fixed part (3; 40; 400) and the movable part (4; 40; 400);

[0122] An air inlet (341; 3041; 3410) is provided on the sealed cavity (34; 3040; 3400);

[0123] Compressed air is supplied from the air inlet (341; 3041; 3410) to the sealed cavity (34; 3040; 3400), which can drive the movable part (4; 40; 400) to press against the vibration damping component (5; 50; 500), thereby adjusting the rigidity of the machine head through the vibration damping component (5; 50; 500).

[0124] The key technical points of closed-loop control methods are:

[0125] The head vibration detection step involves using a vibration sensor to detect head vibration data in real time.

[0126] The rigid closed-loop adjustment process involves determining whether the head vibration is within the normal (or acceptable) range based on the detected head vibration data. If the head vibration exceeds the normal (or acceptable) range, air is supplied to the sealing chamber (34; 3040; 3400) to drive the moving parts (4; 40; 400) to compress the vibration damping components (5; 50; 500) to adjust the head rigidity until the head vibration is within the normal (or acceptable) range.

[0127] It should be noted that while gas is used as the driving source in the aforementioned embodiments, liquids such as hydraulic oil may also be used as the driving source in some variations.

[0128] 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 wire drawing machine head capable of automatically adjusting online to avoid the wire drawing resonance area, comprising a head spindle (1; 10; 100) and a bearing housing (2; 20; 200), characterized in that: Also includes: At least one fastener (3; 30; 300); At least one active component (4; 40； 400）； At least one vibration damping component (5; 50; 500); The bearing housing (2; 20; 200) is mounted on the head spindle (1; 10; 100); The fixed component (3; 30; 300), the movable component (4; 40; 400), and the vibration damping component (5; 50; 500) are all mounted on the bearing seat (2; 20; 200); The movable component (4; 40; 400) is movable on the bearing housing (2; 20; 200); A sealing cavity (34; 30; 300) is formed between the fixed member (3; 40; 400) and the movable member (4; 40; 400). An air inlet (341; 3041; 3410) is provided on the sealed cavity (34; 3040; 3400). Compressed air is supplied from the air inlet (341; 3041; 3410) to the sealed cavity (34; 3040; 3400), which can drive the movable part (4; 40; 400) to press against the vibration damping component (5; 50; 500) to adjust the rigidity of the machine head; It also includes a vibration sensor, which detects the vibration data of the machine head in real time and feeds it back to the PLC control, and then uses a proportional valve (PID) to adjust the compressed air flow and / or air pressure.

2. The wire drawing machine head capable of automatically adjusting online to avoid the wire drawing resonance region according to claim 1, characterized in that: The fastener (3) includes a front seat (31) and a rear seat (32); The movable part (4) includes a front cone sleeve (41) and a rear cone sleeve (42); The bearing housing (2) is provided with a front cone (21) and a rear cone (22). The front cone sleeve (41) and the front cone portion (21) cooperate with each other; The rear cone sleeve (42) and the rear cone portion (22) cooperate with each other; The front tapered sleeve (41) and the rear tapered sleeve (42) have inward tapers and their tapered surfaces face each other; The vibration damping component (5) is provided on both the front cone (21) and the rear cone (22).

3. The wire drawing machine head capable of automatically adjusting online to avoid the wire drawing resonance region according to claim 2, characterized in that: The wire drawing machine head that can automatically adjust online to avoid the wire drawing resonance area also includes a changing cylinder (6). The bearing seat (2) is disposed on the changing cylinder body (6), and the front seat (31) and the rear seat (32) are respectively located on the front and rear sides of the changing cylinder body (6).

4. The wire drawing machine head capable of automatically adjusting online to avoid the wire drawing resonance region according to claim 2, characterized in that: The sealing cavity (34) includes a front sealing cavity and a rear sealing cavity; The front sealing cavity is defined between the front seat (31) and the front cone sleeve (41), and the rear sealing cavity is defined between the rear seat (32) and the rear cone sleeve (42); The front sealing cavity is provided with a front air inlet, and the rear sealing cavity is provided with a rear air inlet.

5. The wire drawing machine head capable of automatically adjusting online to avoid the wire drawing resonance region according to claim 1, characterized in that: The fastener (30) includes a cylinder body (60); The movable part (40) includes a front cone sleeve (410) and a rear cone sleeve (420); The bearing housing (20) is provided with a front cone (210), a rear cone (220) and a cone sleeve groove (230) located between the front cone (210) and the rear cone (220). The front tapered sleeve (410) and the rear tapered sleeve (420) are both disposed within the tapered sleeve groove (230); The front cone sleeve (410) and the front cone portion (210) are mutually fitted together; The rear cone sleeve (420) and the rear cone portion (220) are mutually fitted; The front tapered sleeve (410) and the rear tapered sleeve (420) have outward tapers and opposite tapered surfaces; The vibration damping component (50) is provided on both the front cone (210) and the rear cone (220).

6. The wire drawing machine head capable of automatically adjusting online to avoid the wire drawing resonance region according to claim 5, characterized in that: The wire drawing machine head that can automatically adjust online to avoid the wire drawing resonance area also includes a front seat (310) and a rear seat (320). The front seat (310) and the rear seat (320) are respectively located on the front and rear sides of the cylinder body (60).

7. The wire drawing machine head capable of automatically adjusting online to avoid the wire drawing resonance region according to claim 5, characterized in that: The sealing cavity (3040) is defined between the changing cylinder (60), the front cone sleeve (410), and the rear cone sleeve (420).

8. The wire drawing machine head capable of automatically adjusting online to avoid the wire drawing resonance region according to claim 1, characterized in that: The fastener (300) includes a cylinder (3010) and a rear seat (3020); The movable part (400) includes a piston (4010); The piston (4010) is assembled inside the cylinder (3010), and the sealing cavity (3400) is defined between the piston (4010) and the cylinder (3010). The vibration damping component (500) is disposed on the rear seat (3020) and / or the piston (4010).

9. The wire drawing machine head capable of automatically adjusting online to avoid the wire drawing resonance region according to claim 8, characterized in that: The movable component (400) also includes a disk (4020); The disk (4020) includes a horizontal portion (4021) and a vertical portion (4022). The vertical section (4022) is located between the rear seat (3020) and the piston (4010).

10. A control method for automatically adjusting the wire drawing machine head online to avoid the wire drawing resonance region, characterized in that: Applied to the wire drawing machine head as described in claim 1; include: The head vibration detection step involves using a vibration sensor to detect head vibration data in real time. The rigid closed-loop adjustment process involves determining whether the vibration of the machine head is within the normal range based on the detected vibration data. If the vibration of the machine head exceeds the normal range, air is supplied to the sealing chamber (34; 3040; 3400) to drive the moving parts (4; 40; 400) to compress the vibration damping components (5; 50; 500) to adjust the rigidity of the machine head until the vibration of the machine head is within the normal range.

Images