A wire drawing machine reel tension self-adaptive adjusting mechanism

Abstract

The utility model relates to metal wire rod processing equipment technical field, concretely relates to a kind of wire drawing machine reel tension self-adapting adjusting mechanism.The utility model provides a kind of wire drawing machine reel tension self-adapting adjusting mechanism, including reel body, rack and control unit, the rack top is symmetrically provided with guide slide rail, the both sides of reel body are slidably connected with guide slide rail by support bearing seat, and driving mechanism is rotatably connected between the support bearing seat and rack;The support bearing seat inside is equipped with tension detection unit for the radial tension of reel body in real time detection;The control unit is electrically connected with driving mechanism and tension detection unit respectively, and according to the signal control driving mechanism action of tension detection unit, drive support bearing seat moves along guide slide rail to adjust the relative distance between reel body and wire drawing die box.

Description

Technical Field

[0001] This utility model relates to the technical field of metal wire processing equipment, specifically to an adaptive tension adjustment mechanism for a wire drawing machine drum. Background Technology

[0002] Wire drawing machines are the core equipment in metal wire processing. They apply tension to metal wires through a drum to achieve drawing and shaping. As a key component of the wire drawing machine, the tension between the drum and the drawing die directly affects the quality of wire processing. Insufficient tension will lead to loose wires and out-of-tolerance dimensions, while excessive tension can easily cause wire breakage or equipment damage.

[0003] In existing technologies, tension adjustment on the wire drawing machine drum largely relies on manual experience or simple mechanical limiting devices. These solutions have significant drawbacks: firstly, manual adjustment cannot respond to tension fluctuations in real time and is easily affected by environmental changes (such as temperature and line speed), causing the tension to deviate from the set value; secondly, mechanical limiting can only achieve rigid adjustment at a fixed position and cannot dynamically adjust according to parameters such as wire material and diameter, making it difficult to meet the requirements of high-precision drawing. Therefore, there is an urgent need for a mechanism that can detect tension in real time and adaptively adjust the drum position to improve the stability and consistency of the wire drawing process. Utility Model Content

[0004] The purpose of this invention is to provide a wire drawing machine drum tension adaptive adjustment mechanism, which solves the problems of lag and low accuracy in tension adjustment in the prior art by real-time detection of the radial tension of the drum and combined with closed-loop control to adjust the drum position.

[0005] The present invention provides a wire drawing machine drum tension adaptive adjustment mechanism, comprising a drum body, a frame, and a control unit. Guide rails are symmetrically arranged above the frame. The two sides of the drum body are slidably connected to the guide rails via support bearing seats. A drive mechanism is rotatably connected between the support bearing seats and the frame. A tension detection unit is provided inside the support bearing seats for real-time detection of the radial tension acting on the drum body. The control unit is electrically connected to both the drive mechanism and the tension detection unit, and controls the drive mechanism to move according to the signal from the tension detection unit, thereby moving the support bearing seats along the guide rails to adjust the relative distance between the drum body and the wire drawing die.

[0006] As a preferred technical solution of this utility model, the tension detection unit includes at least two strain gauges and a signal converter. The strain gauges are circumferentially and equidistantly pasted on the stress concentration area of ​​the outer surface of the supporting bearing seat. The signal converter is fixed on the frame and electrically connected to the strain gauges through wires.

[0007] As a preferred embodiment of the present invention, the driving mechanism is a linear cylinder, the cylinder body of which is fixed to the frame by a first support, and the telescopic end is fixed to one side of the support bearing seat by a second support. Both the first support and the second support are hinged to the linear cylinder.

[0008] As a preferred technical solution of this utility model, the middle of the drum body is rotatably connected to the support bearing seat through the main shaft, and the two sides of the support bearing seats are fixed into an integral structure by multiple connecting rods.

[0009] As a preferred technical solution of this utility model, both ends of the guide rail are provided with limit buffers, which are hydraulic damping buffers and are fixed to the ends of the guide rail of the frame by a fixing bracket.

[0010] As a preferred technical solution of this utility model, the two ends of the support bearing seat are provided with corresponding rubber pads at the limit buffer.

[0011] As a preferred technical solution of this utility model, the control unit is provided with a control cabinet for protection. The control unit includes an integrated controller and a pneumatic pressure regulating component. The integrated controller has a built-in MCU and PID control module. The pneumatic pressure regulating component includes a proportional valve and a cylinder connected in sequence. The proportional valve is connected to the drive mechanism through an air pipe.

[0012] The advantages of this utility model compared with the prior art are as follows:

[0013] 1. Real-time adaptive adjustment: The radial tension of the drum is detected in real time by strain gauges, and closed-loop adjustment is achieved by combining with PID control module. It can quickly respond to tension fluctuations, avoid the problem of lag in manual adjustment, and improve the adjustment accuracy (error ≤ ±2%).

[0014] 2. Strong structural stability: The bearing seats on both sides are fixed as one piece by connecting rods, and the guide rail restricts the direction of movement to ensure smooth drum movement; the hydraulic damping buffer and rubber pad provide double protection to reduce impact vibration during movement and extend equipment life;

[0015] 3. High level of intelligence: The control unit is integrated into the protective cabinet. The integrated controller has a built-in MCU and PID module, supports parameter setting and status monitoring, adapts to the drawing requirements of wires of different materials and diameters, and has strong versatility. Attached Figure Description

[0016] Figure 1 This utility model relates to a structure of an adaptive tension adjustment mechanism for a wire drawing machine drum. Figure 1 .

[0017] Figure 2This utility model relates to a structure of an adaptive tension adjustment mechanism for a wire drawing machine drum. Figure 2 .

[0018] Figure 3 This is a structural diagram of the limit buffer of a wire drawing machine drum tension adaptive adjustment mechanism according to the present invention.

[0019] Figure 4 This is a structural diagram of the strain gauge section of a wire drawing machine drum tension adaptive adjustment mechanism according to this utility model.

[0020] As shown in the figure:

[0021] 1. Drum body; 2. Frame; 3. Control unit; 4. Guide rail; 5. Support bearing seat; 6. Drive mechanism; 7. Tension detection unit; 8. Strain gauge; 9. Signal converter; 10. First support; 11. Second support; 12. Main shaft; 13. Connecting rod; 14. Limit buffer; 15. Rubber pad; 16. Control cabinet; 17. Integrated controller; 18. Air pressure regulating component. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Example 1:

[0025] As per the instruction manual Figure 1-4As shown, a wire drawing machine drum tension adaptive adjustment mechanism includes a drum body 1, a frame 2, and a control unit 3. Guide rails 4 are symmetrically arranged on the upper part of the frame 2. The two sides of the drum body 1 are slidably connected to the guide rails 4 through support bearing seats 5. The middle of the drum body 1 is rotatably connected to the support bearing seats 5 through a main shaft 12. The two support bearing seats 5 are fixed as a whole by multiple connecting rods 13. A drive mechanism 6 is rotatably connected between the support bearing seats 5 and the frame 2. The drive mechanism 6 is a linear cylinder. Its cylinder body is fixed to the frame 2 through a first support 10, and its telescopic end is fixed to one side of the support bearing seat 5 through a second support 11. Both the first support 10 and the second support 11 are hinged to the linear cylinder to ensure that there is no jamming when the cylinder telescopically extends or retracts.

[0026] In this utility model, both ends of the guide rail 4 are provided with limit buffers 14. The limit buffers 14 are hydraulic damping buffers and are fixed to the ends of the guide rail 4 of the frame 2 by a fixing bracket. The two ends of the support bearing seat 5 are provided with corresponding rubber pads 15 at the limit buffers 14.

[0027] In this utility model, the bearing support seat 5 is provided with a tension detection unit 7 for real-time detection of the radial tension on the drum body 1. The tension detection unit 7 includes at least two strain gauges 8 and a signal converter 9. The strain gauges 8 are 3-4 strain gauges 8 (model BF350-3AA can be selected) are circumferentially and equidistantly pasted in the stress concentration area on the outer surface of the bearing support seat 5. The signal converter 9 is fixed on the frame 2 and is electrically connected to the strain gauges 8 through wires.

[0028] In this utility model, the control unit 3 is provided with a control cabinet 16 for protection. The control unit 3 is electrically connected to the drive mechanism 6 and the tension detection unit 7 respectively, and controls the drive mechanism 6 to move according to the signal of the tension detection unit 7, so as to drive the support bearing seat 5 to move along the guide slide rail 4 to adjust the relative distance between the drum body 1 and the drawing die box. The control unit 3 includes an integrated controller 17 and a pneumatic pressure regulating component 18. The integrated controller 17 has a built-in MCU (such as STM32 series MCU) and PID control module. The pneumatic pressure regulating component 18 includes a proportional valve (such as SMC ITV series) and a cylinder connected in sequence. The proportional valve is connected to the drive mechanism 6 through an air pipe.

[0029] Working principle

[0030] When the wire drawing machine is working, the metal wire is drawn through the drawing die and wound onto the drum body 1. The drum body 1 generates radial tension under the tension of the wire. This tension is transmitted to the support bearing seat 5, causing the strain gauge 8 at the connection of its main shaft 12 to deform. The resistance value of the strain gauge 8 changes linearly with the deformation (ΔR = kε, where k is the sensitivity coefficient and ε is the strain). The signal converter 9 collects the resistance change of the strain gauge 8 in real time, converts it into a voltage signal (ΔV = ΔR × R, where R is a fixed voltage divider resistor), and sends it to the integrated controller 17 of the control unit 3.

[0031] The integrated controller 17 compares the received voltage signal with the preset tension value (set via the human-machine interface) and calculates the tension deviation ΔF. The PID control module adjusts the duty cycle of the output PWM signal according to ΔF to control the opening of the proportional valve, thereby adjusting the intake / exhaust flow of the linear cylinder and changing the cylinder's extension / retraction speed and displacement. The support bearing seat 5 moves along the guide rail 4 under the push of the cylinder until the tension between the drum body 1 and the drawing die box returns to the set value, realizing closed-loop adaptive adjustment.

[0032] When the support bearing seat 5 moves to the end of the guide slide rail 4, the rubber pad 15 contacts the hydraulic damping buffer. The buffer generates damping force through the internal oil flow, which slows down the impact speed of the support bearing seat 5. The rubber pad 15 further absorbs the remaining impact energy, avoids component damage, and extends the service life of the mechanism.

[0033] The present invention and its embodiments have been described above. This description is not restrictive, and the specific embodiments shown are only one of the embodiments of the present invention. The actual structure is not limited to this. In short, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit of the present invention, such design should fall within the protection scope of the present invention.

Claims

1. A wire drawing machine drum tension adaptive adjustment mechanism, comprising a drum body (1), a frame (2), and a control unit (3), characterized in that: The frame (2) is symmetrically provided with guide rails (4) on the top. The two sides of the drum body (1) are slidably connected to the guide rails (4) through support bearing seats (5). The support bearing seats (5) and the frame (2) are rotatably connected with a drive mechanism (6). The support bearing seat (5) is equipped with a tension detection unit (7) for real-time detection of the radial tension on the drum body (1); The control unit (3) is electrically connected to the drive mechanism (6) and the tension detection unit (7) respectively, and controls the drive mechanism (6) to move according to the signal of the tension detection unit (7), thereby driving the support bearing seat (5) to move along the guide slide rail (4) to adjust the relative distance between the roll body (1) and the drawing die box.

2. The adaptive tension adjustment mechanism for a wire drawing machine drum according to claim 1, characterized in that: The tension detection unit (7) includes at least two strain gauges (8) and a signal converter (9). The strain gauges (8) are circumferentially and equidistantly attached to the stress concentration area on the outer surface of the supporting bearing seat (5). The signal converter (9) is fixed on the frame (2) and electrically connected to the strain gauges (8) via wires.

3. The adaptive tension adjustment mechanism for a wire drawing machine drum according to claim 1, characterized in that: The drive mechanism (6) is a linear cylinder. Its cylinder body is fixed to the frame (2) by the first support (10), and the telescopic end is fixed to one side of the support bearing seat (5) by the second support (11). The first support (10) and the second support (11) are both hinged to the linear cylinder.

4. The adaptive tension adjustment mechanism for a wire drawing machine drum according to claim 1, characterized in that: The middle of the drum body (1) is rotatably connected to the support bearing seat (5) via the main shaft (12), and the two sides of the support bearing seats (5) are fixed together as a whole by multiple connecting rods (13).

5. The adaptive tension adjustment mechanism for a wire drawing machine drum according to claim 1, characterized in that: Both ends of the guide rail (4) are provided with limit buffers (14), which are hydraulic damping buffers and are fixed to the end of the guide rail (4) of the frame (2) by a fixing bracket.

6. The adaptive tension adjustment mechanism for a wire drawing machine drum according to claim 5, characterized in that: The two ends of the support bearing seat (5) are provided with corresponding rubber pads (15) at the limit buffer (14).

7. The adaptive tension adjustment mechanism for a wire drawing machine drum according to claim 1, characterized in that: The control unit (3) is provided with a control cabinet (16) for protection. The control unit (3) includes an integrated controller (17) and a pneumatic pressure regulating component (18). The integrated controller (17) has a built-in MCU and PID control module. The pneumatic pressure regulating component (18) includes a proportional valve and a cylinder connected in sequence. The proportional valve is connected to the drive mechanism (6) through an air pipe.

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