Wet drawing guide wheel device and process method for automatically controlling tension of steel wire of finished mold
By using a wet pulling guide wheel device that automatically controls the tension of finished mold wire in steel cord production, the problem of increasing tension of finished mold wire with the use time is solved, stable tension adjustment is achieved, mold explosion rate and mold consumption are reduced, and the surface quality of the steel wire is improved.
Patent Information
- Application Number
- CN202510120125.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2025-01-21
- Filing Date
- 2025-01-25
- Publication Date
- 2025-04-18
AI Technical Summary
During the steel cord production process, the tension of the finished mold wire increases with the increase of use time, resulting in the risk of wire breakage and the deterioration of the surface quality of the steel wire. At the same time, the mold consumption increases and the proportion of blasting molds becomes higher.
A wet pull guide wheel device that automatically controls the tension of finished mold wire is adopted. The device includes a base plate, a lower support tube, a KF clamp, an upper support tube, a wire guide wheel, a damping friction plate, a support rod, a lock nut, a bearing, a telescopic rod and a telescopic drive mechanism. The pressure sensor and a driver can realize real-time adjustment and stabilization of the tension of finished mold wire.
It realizes rapid and precise online adjustment and stabilization of the finished mold wire tension, reduces the mold explosion rate, improves the surface quality of the steel wire, reduces mold consumption, and extends the service life of the mold.
Smart Images
Figure CN119841173A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of steel cord production, and in particular to a wet-pulling guide wheel device and a process method for automatically controlling the tension of a finished mold steel wire. Background Art
[0002] Steel cord is the most widely developed product among radial tire skeleton materials and is also the most difficult product to produce among metal products. It has high strength, good thermal stability and elasticity, and can withstand the forces from inside and outside the radial tire products, improve the strength of the products, limit their deformation, and maintain dimensional stability.
[0003] At present, the wet drawing of steel cord wire is to soak the brass-plated steel wire in lubricating liquid and draw it several times to form the finished steel wire. The sub-finished die is the penultimate die for drawing the finished steel wire. The wear rate of the aperture of the sub-finished die exceeds that of the finished die. In the process of the finished die being replaced and used again until the aperture is out of tolerance, the wire tension at the finished die increases with the increase in the use time of the finished die, which increases the risk of wire breakage and the risk of deterioration of the surface quality of the steel wire. At the same time, too low wire tension at the finished die will also increase die consumption. In particular, with the industrialization of wet-drawn steel wire UT and the trend of higher and higher steel wire strength in the future, die consumption will increase significantly, the proportion of die explosion will increase, and the surface quality of the steel wire will also deteriorate. Summary of the invention
[0004] The purpose of the present invention is to provide a wet-pulling guide wheel device and a process method for automatically controlling the tension of the finished mold steel wire, which can quickly and accurately adjust and stabilize the tension of the finished mold steel wire online and reduce the mold explosion rate; at the same time, the wet-pulling guide wheel device for automatically controlling the tension of the finished mold steel wire can increase the initial tension of the steel wire out of the finished mold and reduce mold loss, so as to solve the problems raised in the above-mentioned background technology.
[0005] To achieve the above object, the present invention provides the following technical solutions: A wet-pulling guide wheel device for automatically controlling the tension of a finished die steel wire comprises a base plate, a lower support tube, a KF clamp, an upper support tube, a wire guide wheel, a damping friction plate, a support rod, a locking nut, a bearing, a telescopic rod and a telescopic driving mechanism connected thereto.
[0006] The base plate and the lower support pipe are fixed by welding, and the base plate is used to fix the wet-pulling guide wheel device which automatically controls the tension of the finished mold steel wire.
[0007] The lower support tube is a hollow structure, the upper part of the lower support tube is a KF flange, the end surface of the KF flange is equipped with a sealing ring A, and the upper part of the sealing ring A contacts the lower part of the pressure sensor.
[0008] The model of the pressure sensor is QLS-10, and the pressure sensor is electrically connected to the main controller of the wet pulling equipment.
[0009] The upper support tube is an L-shaped curved tube structure. A bearing is installed at the horizontal end of the upper support tube to support the wire guide wheel. The bottom of the vertical end is a KF flange. A sealing ring B is installed on the end face of the KF flange. The lower part of the sealing ring B contacts the upper part of the pressure sensor.
[0010] The function of the KF clamp is to lock and seal the KF flange at the vertical end of the upper support tube, the sealing ring A, the pressure sensor, the sealing ring B, and the KF flange at the upper end of the lower support tube. The sealing ring A and the sealing ring B can prevent liquid from entering the upper support tube and the lower support tube from the joint between the upper support tube and the lower support tube.
[0011] The wire guide wheel is interference fit with the outer ring of the bearing, the inner ring of the bearing is interference fit on the horizontal end surface of the upper support tube, and the contact surface between the wire guide wheel and the damping friction plate has a certain friction coefficient.
[0012] The damping friction plate is welded to the support rod at one end, and generates friction resistance at the other end against the contact surface of the wire guide wheel.
[0013] One end of the support rod is connected to the damping friction plate by welding, and the other end is provided with a positioning pin hole and is fixedly connected to the telescopic rod.
[0014] The locking nut has a self-locking function and is fixed on the end surface of the telescopic rod through thread locking, so that the telescopic rod is fixedly connected to the support rod.
[0015] The telescopic driving mechanism comprises a sealing ring C, a transmission frame, a lead screw, a first limiter, a motor, a fixed base, a second limiter, a nut seat, and a linear guide rail.
[0016] A sealing ring C is connected to the horizontal port of the upper support tube, and the sealing ring C is sleeved on the outer wall of the telescopic rod. The sealing ring C prevents liquid from entering the tube body from the top of the upper support tube.
[0017] One end of the transmission frame is welded and fixed to the telescopic rod, and the other end is welded and fixed to one end of the nut seat.
[0018] The nut seat thread is matched with the lead screw, and can move along the linear guide as the lead screw rotates.
[0019] The first limiter and the second limiter are respectively welded to the lead screw and function to limit the displacement range of the lead screw.
[0020] The first limiter of the motor power output shaft is welded and fixed, and is concentric with the rotation of the lead screw, and the motor circuit is connected with the drive circuit.
[0021] The fixed base is fixed to the bottom of the motor by bolts, and the fixed base is fixed to the inner wall of the upper support tube by welding.
[0022] One end of the linear guide is welded to the inner wall of the upper support tube, and the nut seat is connected to the slide seat of the linear guide to limit the rotation of the nut seat during horizontal movement.
[0023] The power output shaft of the motor is connected to the lead screw, the input end is electrically connected to the driver, and the driver is electrically connected to the main controller of the wet pulling equipment.
[0024] The wet-pulling guide wheel device for automatically controlling the tension of the finished mold steel wire is equipped with a wireless operator with real-time pressure display and target pressure setting functions. The wireless operator is connected to the main controller of the wet-pulling equipment through a wireless signal.
[0025] A wet-drawing process method for automatically controlling the tension of a finished mold steel wire, using the wet-drawing guide wheel device for automatically controlling the tension of a finished mold steel wire, comprises the following steps: S1. Fix the wet-pulling guide wheel device for automatically controlling the tension of the finished mold steel wire at the designated position before the finished mold pass of the wet-pulling equipment, and pass the steel wire drawn from the finished mold in the lathe through the guide wheel device and through the finished mold; S2. Adjust the platform and steel wire to the state ready for production, power on the wet-pulling guide wheel device that automatically controls the tension of the finished mold steel wire, check the wireless operator, and record the pressure value; S3. After starting the lathe for several minutes, preferably 10 minutes, measure the tension value of the finished mold and record the pressure value at this time, set this pressure value as the trigger value and target value of the pressure sensor, that is, after exceeding this pressure, trigger the pressure sensor to send a signal to the main controller, the main controller sends a command to the driver, drives the motor to run, pushes the telescopic rod to move, and the damping friction plate moves with the telescopic rod to reduce the rotation resistance of the wire guide wheel, thereby reducing the wire tension to reach the target value.
[0026] Beneficial effects of the present invention: The wet-pulling guide wheel device and process method for automatically controlling the tension of the finished die steel wire of the present invention can quickly and accurately adjust and stabilize the tension of the finished die steel wire online, reduce the mold explosion rate and improve the surface quality of the steel wire for UT and MT strength steel wires.
[0027] The wet-pulling guide wheel device and process method for automatically controlling the tension of the finished mold steel wire of the present invention can increase the initial tension of the steel wire leaving the finished mold, reduce mold consumption, and improve production efficiency and output. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 It is the overall axonometric view of the present invention.
[0029] Figure 2 It is a schematic structural diagram of the telescopic drive mechanism of the present invention.
[0030] Figure 3 It is a comparison chart of the conventional finished product mold tension in Example 1 and the finished product mold tension equipped with the guide wheel device of the present invention.
[0031] Figure 4 It is a comparison chart of the number of drawing discs before the conventional drawing in Example 1 and the drawing with the guide wheel device of the present invention installed.
[0032] Figure 5 It is a comparison chart of the conventional finished product mold tension in Example 2 and the finished product mold tension equipped with the guide wheel device of the present invention.
[0033] Figure 6 This is a comparison chart of the number of drawing discs before the conventional drawing in Example 2 and the drawing with the guide wheel device of the present invention installed.
[0034] In the figure: 1-base plate, 2-lower support tube, 3-KF clamp, 4-upper support tube, 5-line guide wheel, 6-damping friction plate, 7-support rod, 8-locking nut, 9-bearing, 10-telescopic rod, 11-sealing ring C, 12-transmission frame, 13-nut seat, 14-first limiter, 15-motor, 16-fixed base, 17-second limiter, 18-screw, 19-linear guide. DETAILED DESCRIPTION
[0035] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments.
[0036] like Figures 1-2 As shown, a wet-pulling guide wheel device for automatically controlling the tension of a finished mold steel wire comprises a base plate 1, a lower support tube 2 is connected to the base plate 1, an upper support tube 4 is connected to the lower support tube 2 through a connecting piece, a pressure sensor is connected to the joint of the lower support tube 2 and the upper support tube 4; one end of the upper support tube 4 is connected to a wire-passing guide wheel 5, a telescopic driving mechanism is connected inside the upper support tube 4, the telescopic driving mechanism is driven and connected to a telescopic rod 10, one end of the telescopic rod 10 is connected to a damping friction plate 6, and a friction resistance is generated on the contact surface between the damping friction plate 6 and the wire-passing guide wheel 5; the pressure sensor is electrically connected to the main controller of the wet-pulling equipment.
[0037] The upper support tube 4 is an L-shaped curved tube structure. The bottom end of the upper support tube 4 and the top end of the lower support tube 2 are both KF flanges. The end faces of the KF flanges are both provided with sealing grooves, and sealing rings A and B are embedded in the sealing grooves.
[0038] The pressure sensor is connected between two KF flanges, and the upper and lower ends of the pressure sensor are in contact with the sealing ring A and the sealing ring B respectively; the connecting piece is a KF clamp 3, and the KF clamp 3 locks the upper and lower KF flanges and seals the pressure sensor.
[0039] The wire guide wheel 5 is interference fit with the outer ring of the bearing 9 , and the inner ring of the bearing 9 is interference fit on the horizontal end surface of the upper support tube 4 .
[0040] The telescopic driving mechanism includes a fixed base 16, which is connected to the inner wall of the upper support tube 4. A motor 15 is connected to the fixed base 16. The power output shaft of the motor 15 is connected to the lead screw 18. The nut seat 13 is threadedly engaged with the lead screw 18. The nut seat 13 is connected to a transmission frame 12. The inner wall of the support tube is connected to a linear guide 19. The nut seat 13 is connected to the slide seat of the linear guide 19. The lead screw 18 at both ends of the nut seat 13 is connected to a first limiter 14 and a second limiter 17. The first limiter 14 is located at the junction of the output shaft of the motor 15 and the lead screw 18, and the output shaft of the motor 15 is concentrically arranged with the lead screw 18.
[0041] The telescopic rod 10 is connected to one end of the transmission frame 12. The telescopic rod 10, the lead screw 18 and the horizontal end of the upper support tube 4 are all concentrically arranged. The telescopic rod 10 can be extended to the outside of the upper support tube 4. A sealing ring C11 is connected to the horizontal end of the upper support tube 4, and the sealing ring C11 is sleeved on the outer wall of the telescopic rod 10.
[0042] The motor 15 is electrically connected to a driver, and the driver is electrically connected to a main controller of the wet pulling device.
[0043] The damping friction plate 6 is connected to one end of the support rod 7. The other end of the support rod 7 is provided with a positioning pin hole and is clamped to one end of the telescopic rod 10. The locking nut 8 is connected to the end of the telescopic rod 10 to fix the support rod 7 to the telescopic rod 10.
[0044] It also includes a wireless operator with real-time pressure display and target pressure setting functions, and the wireless operator is connected to the main controller of the wet pulling equipment through a wireless signal. Example
[0045] The wet-pulling guide wheel device for automatically controlling the tension of the finished mold steel wire is fixed at a designated position before the finished mold pass on the wet-pulling equipment platform, and the steel wire drawn from the sub-finished mold in the platform passes through the guide wheel device and the finished mold.
[0046] Adjust the lathe and 0.30mm steel wire to the production state, power on the guide wheel device that automatically adjusts the tension of the finished mold steel wire, check the wireless operator, and record the pressure value of 3kg.
[0047] After the lathe was started for 10 minutes, the tension value of the finished mold was measured to be 5.5kg and the pressure value was recorded to be 3.1kg. This pressure value was set as the trigger value and target value of the pressure sensor. That is, after exceeding this pressure, the pressure sensor was triggered to send a signal to the signal processor of the main controller. The main controller sent a command to the driver to drive the motor 15 to run and the screw 18 to rotate, thereby driving the telescopic rod 10 and the damping friction plate 6 to move, reducing the rotation resistance of the wire guide wheel 5, thereby reducing the wire tension to the target value.
[0048] The tension of the finished mold steel wire is as follows Figure 3 The wet-pulling guide wheel device for automatically controlling the tension of the finished die steel wire of the present invention has higher tension stability of the finished die and better surface quality of the steel wire.
[0049] like Figure 4 As shown in the figure, after installing a wet-pulling guide wheel device that automatically controls the tension of the finished die steel wire, the die consumption is significantly reduced, the life of the die is extended, and the die drawing service life is increased from 7 reels to 12 reels. Example
[0050] The wet-pulling guide wheel device for automatically controlling the tension of the finished mold steel wire is fixed at a designated position before the finished mold pass on the wet-pulling equipment platform, and the steel wire drawn from the sub-finished mold in the platform passes through the guide wheel device and the finished mold.
[0051] Adjust the lathe and 0.27mm steel wire to the production state, power on the guide wheel device that automatically adjusts the tension of the finished mold steel wire, check the wireless operator, and record the pressure value of 2.3kg.
[0052] After the lathe was started for 10 minutes, the tension value of the finished mold was measured to be 3.4kg and the pressure value was recorded to be 2.3kg. This pressure value was set as the trigger value and target value of the pressure sensor. That is, after exceeding this pressure, the pressure sensor was triggered to send a signal to the signal processor of the main controller. The main controller sent a command to the driver to drive the motor 15 to run and the screw 18 to rotate, thereby driving the telescopic rod 10 and the damping friction plate 6 to move, reducing the rotation resistance of the wire guide wheel 5, thereby reducing the wire tension to the target value.
[0053] The tension of the finished mold steel wire is as follows Figure 5 The wet-pulling guide wheel device for automatically controlling the tension of the finished die steel wire of the present invention has higher tension stability of the finished die and better surface quality of the steel wire.
[0054] like Figure 6 As shown in the figure, after installing a wet-pulling guide wheel device that automatically controls the tension of the finished die steel wire, the die consumption is significantly reduced, the life of the die is extended, and the die drawing service life is increased from 8 reels to 14 reels.
[0055] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent transformation or modification made according to the spirit of the present invention should be included in the protection scope of the present invention.
Claims
1. A wet-pulling guide wheel device for automatically controlling the tension of finished die steel wire, characterized in that: The invention comprises a base plate (1), a lower support tube (2) being connected to the base plate (1), an upper support tube (4) being connected to the lower support tube (2) via a connecting piece, and a pressure sensor being connected to the joint of the lower support tube (2) and the upper support tube (4); one end of the upper support tube (4) being connected to a wire guide wheel (5), the upper support tube (4) being connected to a telescopic drive mechanism, the telescopic drive mechanism being drivably connected to a telescopic rod (10), one end of the telescopic rod (10) being connected to a damping friction plate (6), and a contact surface between the damping friction plate (6) and the wire guide wheel (5) generating friction resistance; and the pressure sensor being electrically connected to a main controller of the wet pulling device.
2. A wet-pulling guide wheel device for automatically controlling the tension of finished die steel wire as claimed in claim 1, characterized in that: The upper support tube (4) is an L-shaped curved tube structure. The bottom end of the upper support tube (4) and the top end of the lower support tube (2) are both KF flanges. The end faces of the KF flanges are both provided with sealing grooves, in which sealing rings A and B are embedded.
3. A wet-pulling guide wheel device for automatically controlling the tension of finished die steel wire as claimed in claim 2, characterized in that: The pressure sensor is connected between two KF flanges, and the upper and lower ends of the pressure sensor are in contact with a sealing ring A and a sealing ring B respectively; the connecting piece is a KF clamp (3), and the KF clamp (3) locks the upper and lower KF flanges and seals the pressure sensor.
4. A wet-pulling guide wheel device for automatically controlling the tension of finished die steel wire as claimed in claim 1, characterized in that: The wire guide wheel (5) is interference fit with the outer ring of the bearing (9), and the inner ring of the bearing (9) is interference fit on the horizontal end surface of the upper support tube (4).
5. A wet-pulling guide wheel device for automatically controlling the tension of finished die steel wire as claimed in claim 1, characterized in that: The telescopic drive mechanism comprises a fixed base (16), the fixed base (16) being connected to the inner wall of the upper support tube (4), a motor (15) being connected to the fixed base (16), a power output shaft of the motor (15) being connected to a ball screw (18), a nut seat (13) being threadedly engaged with the ball screw (18), a transmission frame (12) being connected to the nut seat (13), a linear guide rail (19) being connected to the inner wall of the support tube, the nut seat (13) being connected to a slide seat of the linear guide rail (19), a first stopper (14) and a second stopper (17) being connected to the ball screw (18) at both ends of the nut seat (13), the first stopper (14) being located at the junction of the output shaft of the motor (15) and the ball screw (18), and the output shaft of the motor (15) and the ball screw (18) being arranged concentrically.
6. A wet-pulling guide wheel device for automatically controlling the tension of finished die steel wire as claimed in claim 5, characterized in that: The telescopic rod (10) is connected to one end of the transmission frame (12); the telescopic rod (10) is concentrically arranged with the ball screw (18) and the horizontal end of the upper support tube (4); the telescopic rod (10) can be extended to the outside of the upper support tube (4); a sealing ring C (11) is connected to the horizontal end of the upper support tube (4), and the sealing ring C (11) is sleeved on the outer wall of the telescopic rod (10).
7. A wet-pulling guide wheel device for automatically controlling the tension of finished die steel wire as claimed in claim 5, characterized in that: The motor (15) is electrically connected to a driver, and the driver is electrically connected to a main controller of the wet pulling device.
8. A wet-pulling guide wheel device for automatically controlling the tension of finished die steel wire as claimed in claim 1, characterized in that: The damping friction plate (6) is connected to one end of the support rod (7), the other end of the support rod (7) is provided with a positioning pin hole and is clamped to one end of the telescopic rod (10), and the locking nut (8) is connected to the end of the telescopic rod (10) so that the support rod (7) is fixed to the telescopic rod (10).
9. A wet-pulling guide wheel device for automatically controlling the tension of finished die steel wire as claimed in claim 1, characterized in that: It also includes a wireless operator with real-time pressure display and target pressure setting functions, and the wireless operator is connected to the main controller of the wet pulling equipment through a wireless signal.
10. A wet-drawing process for automatically controlling the tension of a finished die steel wire, using a wet-drawing guide wheel device for automatically controlling the tension of a finished die steel wire as claimed in any one of claims 1 to 9, characterized in that The steps include: S1. Fix the wet-pulling guide wheel device for automatically controlling the tension of the finished mold steel wire at the designated position before the finished mold pass of the wet-pulling equipment, and pass the steel wire drawn from the finished mold in the lathe through the guide wheel device and through the finished mold; S2. Adjust the platform and steel wire to the state ready for production, power on the wet-pulling guide wheel device that automatically controls the tension of the finished mold steel wire, check the wireless operator, and record the pressure value; S3. After the lathe is started for several minutes, the tension value of the finished mold is measured and the pressure value at this time is recorded. This pressure value is set as the trigger value and target value of the pressure sensor. That is, when this pressure is exceeded, the pressure sensor is triggered to send a signal to the main controller. The main controller sends a command to the driver to drive the motor (15) to operate, push the telescopic rod (10) to move, and the damping friction plate (6) moves with the telescopic rod (10) to reduce the rotation resistance of the wire guide wheel (5), thereby reducing the wire tension to reach the target value.