Tension adjusting mechanism of continuous casting straightening machine

Abstract

The utility model discloses a kind of tension adjusting mechanism of continuous casting straightening machine, the inner side upper end middle position of supporting frame is rotatably connected with screw rod, the outside of screw rod is spirally connected with adjusting frame, the right front side and right rear side of adjusting frame are slidably connected with limit slide bar, the lower end of limit slide bar is fixedly connected with clamping roller support, the inner side of clamping roller support is equipped with lower pull straightening clamping roller, the utility model can monitor the tension of lower pull straightening clamping roller by the effect of lower tension sensor, and when tension value exceeds or is lower than set threshold value, servo motor can be timely response start, combined with the efficient transmission of screw rod, can complete adjusting action in the moment of tension fluctuation, avoid continuous casting billet to produce defect due to tension fluctuation, and by the effect of buffer spring, it can cooperate rigid transmission, both can guarantee adjusting precision, and can absorb instantaneous impact by buffer spring.

Description

Technical Field

[0001] This utility model relates to the field of continuous casting straightening machine technology, specifically a tension adjustment mechanism for a continuous casting straightening machine. Background Technology

[0002] The continuous casting straightening machine is the core equipment in the continuous casting production line. Its function is to pull the initially solidified continuous casting billet out of the crystallizer at a uniform speed and straighten the billet through multiple sets of clamping rollers. At the same time, it bears the tension generated by the billet during the solidification process. In actual production, factors such as changes in the temperature of the billet, fluctuations in cross-sectional dimensions, and adjustments in the pulling speed will cause changes in the tension during the straightening process. If the tension is too high, it is easy to cause defects such as cracks and breakage in the billet. If the tension is too low, it may cause the billet to deviate and fail to be straightened smoothly, affecting the continuity of production.

[0003] Existing tension adjustment mechanisms for continuous casting straightening machines mostly use cylinders for adjustment. However, the movement of cylinders depends on changes in air pressure, resulting in lag and an inability to respond promptly to instantaneous fluctuations in the tension of the continuous casting billet. Furthermore, existing cylinders can only drive the movement of a single-sided clamping roller, making it impossible to simultaneously adjust the upper and lower clamping rollers. Moreover, it is difficult to make corresponding adjustments based on the billet type, reducing the applicability of the device. Therefore, it is necessary to design a tension adjustment mechanism for a continuous casting straightening machine to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a tension adjustment mechanism for a continuous casting straightening machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tension adjustment mechanism for a continuous casting straightening machine, comprising a support frame and a clamping roller support. A lead screw is rotatably connected to the middle position of the upper inner side of the support frame, and an adjustment frame is helically connected to the outer side of the lead screw. Limiting slide rods are slidably connected to the right front side and the right rear side of the adjustment frame. A clamping roller support is fixedly connected to the lower end of the limiting slide rod, and a downward straightening clamping roller is provided on the inner side of the clamping roller support. The upper end face of the adjusting frame is fixedly connected to a lifting top frame, the upper end wall of the lifting top frame is slidably connected to a lifting frame, and the lower side frame of the lifting frame is provided with an upward straightening roller.

[0006] Preferably, there are two support frames. A servo motor is fixedly connected to the lower inner side of the support frame on the left side. A reducer is fixedly connected to the upper end of the output shaft of the servo motor. The output end of the reducer is fixedly connected to the lead screw through a coupling.

[0007] Preferably, there are two lead screws, and a sprocket assembly is provided between the lower ends of the two lead screws, with the inner sprocket of the sprocket assembly fixedly connected to the lead screw.

[0008] Preferably, the upper inner side of the support frame is fixedly connected to both the front and rear sides with fixed guide rods, and the fixed guide rods are slidably connected to the adjustment frame.

[0009] Preferably, a buffer spring is sleeved on the upper side surface of the limiting slide rod.

[0010] Preferably, a tension sensor is fixedly connected to the middle position inside the clamping roller support, and a first connecting block is fixedly connected to the upper end of the tension sensor. The first connecting block is rotatably connected to the pull-down straightening clamping roller.

[0011] Preferably, a stepper motor is fixedly connected to the middle position of the upper end of the lifting frame, and an adjusting screw is fixedly connected to the lower end of the output shaft of the stepper motor. The adjusting screw is screwed to the lifting top frame and rotatably connected to the lifting frame.

[0012] Preferably, upper tension sensors are fixedly connected to both the left and right sides of the lower frame of the lifting frame, and a second connecting block is fixedly connected to the lower end of the upper tension sensor. The second connecting block is rotatably connected to the upper tension clamping roller.

[0013] Preferably, a PLC controller is fixedly connected to the upper front end of the support frame located on the left side, and a touch screen is electrically connected to the left side of the PLC controller.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. The tension adjustment mechanism of this continuous casting straightening machine can monitor the tension of the straightening rollers through the function of the lower tension sensor. When the tension value exceeds or falls below the set threshold, the servo motor can respond and start in time. Combined with the efficient transmission of the lead screw, the adjustment action can be completed at the moment the tension fluctuates, avoiding defects in the continuous casting billet caused by tension fluctuations. The buffer spring can cooperate with the rigid transmission to ensure the adjustment accuracy and absorb the instantaneous impact.

[0015] 2. The tension adjustment mechanism of this continuous casting straightening machine can move synchronously with the adjustment frame through the action of the lifting top frame. In this way, it can drive the upper straightening clamping roller to move synchronously while adjusting the lower straightening clamping roller. According to the tension monitoring of the upper straightening clamping roller by the upper tension sensor, the stepper motor can make timely adjustment actions and drive the adjustment screw to move the lifting frame up and down. This allows the upper straightening clamping roller to not only be adjusted in time according to the tension change, but also to be adaptively adjusted according to the different specifications of the continuous casting billet. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the installation structure of this utility model; Figure 2 This is a sectional view of the installation structure of the adjusting frame, limiting slide bar, and clamping roller support of this utility model; Figure 3 This is a sectional view of the installation structure of the adjusting frame, the clamping roller support, and the pull-down straightening clamping roller of this utility model; Figure 4 This is a schematic diagram of the installation structure of the lifting frame of this utility model; Figure 5 This is a schematic diagram of the installation structure of the upper tension straightening clamping roller of this utility model.

[0017] In the diagram: 1. Support frame; 2. Lead screw; 3. Adjusting frame; 4. Limiting slide bar; 5. Clamping roller support; 6. Lower pull straightening clamping roller; 7. Lifting top frame; 8. Lifting frame; 9. Upper pull straightening clamping roller; 10. Servo motor; 11. Reducer; 12. Sprocket assembly; 13. Fixed guide rod; 14. Buffer spring; 15. Lower tension sensor; 16. First connecting block; 17. Stepper motor; 18. Adjusting screw; 19. Upper tension sensor; 20. Second connecting block; 21. PLC controller; 22. Touch screen display. Detailed Implementation

[0018] 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.

[0019] Example 1 Please refer to Figure 1-5 As shown, this utility model provides a tension adjustment mechanism for a continuous casting straightening machine, including a support frame 1 and a clamping roller support 5. A lead screw 2 is rotatably connected to the middle position of the upper inner side of the support frame 1, and an adjustment frame 3 is spirally connected to the outer side of the lead screw 2. Limiting slide rods 4 are slidably connected to the right front side and right rear side of the adjustment frame 3. The lower end of the limiting slide rod 4 is fixedly connected to the clamping roller support 5. A downward straightening clamping roller 6 is provided on the inner side of the clamping roller support 5. The adjustment frame 3 can be driven to move up and down by the rotation of the lead screw 2, which in turn can drive the clamping roller support 5 and the downward straightening clamping roller 6 to move accordingly. A lifting top frame 7 is fixedly connected to the inner side of the upper end face of the adjusting frame 3. A lifting frame 8 is slidably connected to the upper end wall of the lifting top frame 7. An upper pull straightening clamping roller 9 is provided inside the lower frame of the lifting frame 8. The lifting top frame 7 can move with the adjusting frame 3 through the action of the lifting top frame 7, so that the upper pull straightening clamping roller 9 can move synchronously with the movement of the lower pull straightening clamping roller 6.

[0020] Specifically, there are two support frames 1. The lower inner end of the support frame 1 on the left is fixedly connected to a servo motor 10. The upper end of the output shaft of the servo motor 10 is fixedly connected to a reducer 11. The output end of the reducer 11 is fixedly connected to the lead screw 2 through a coupling. By responding to the start of the servo motor 10 and combining the efficient transmission of the lead screw 2, the adjustment action can be completed at the moment when the tension fluctuates, thus avoiding defects caused by tension fluctuations in the continuous casting billet.

[0021] Specifically, there are two lead screws 2, and a sprocket assembly 12 is provided between the lower ends of the two lead screws 2. The inner sprocket of the sprocket assembly 12 is fixedly connected to the lead screw 2. The sprocket assembly 12 facilitates the simultaneous driving and rotation of the lead screws 2 on the left and right sides.

[0022] Specifically, fixed guide rods 13 are fixedly connected to the front and rear sides of the upper inner side of the support frame 1. The fixed guide rods 13 are slidably connected to the adjustment frame 3. The fixed guide rods 13 can ensure the stable lifting and lowering of the adjustment frame 3.

[0023] Specifically, a buffer spring 14 is sleeved on the upper surface of the limit slide bar 4. The buffer spring 14 can cooperate with the rigid transmission to ensure adjustment accuracy and absorb instantaneous impact.

[0024] Specifically, a tension sensor 15 is fixedly connected to the middle position inside the clamping roller support 5. A first connecting block 16 is fixedly connected to the upper end of the tension sensor 15. The first connecting block 16 is rotatably connected to the pull-down straightening clamping roller 6. The tension borne by the pull-down straightening clamping roller 6 can be monitored in real time through the function of the tension sensor 15.

[0025] Specifically, a stepper motor 17 is fixedly connected to the middle of the upper end of the lifting frame 8. An adjusting screw 18 is fixedly connected to the lower end of the output shaft of the stepper motor 17. The adjusting screw 18 is screwed to the lifting top frame 7 and rotatably connected to the lifting frame 8. Upper tension sensors 19 are fixedly connected to both sides of the lower frame of the lifting frame 8. A second connecting block 20 is fixedly connected to the lower end of the upper tension sensor 19. The second connecting block 20 is rotatably connected to the upper tension straightening roller 9. The upper tension sensor 19 can monitor in real time and control the stepper motor 17 to rotate, so that the adjusting screw 18 can rotate and drive the lifting frame 8 and the upper tension straightening roller 9 to move up and down. This allows for tension adjustment of the upper tension straightening roller 9. By pre-driving the stepper motor 17, the upper tension straightening roller 9 can be moved up and down for adjustment. This allows for adaptive adjustment according to different models of continuously cast billets.

[0026] Specifically, a PLC controller 21 is fixedly connected to the upper front end of the support frame 1 on the left side. A touch screen display 22 is electrically connected to the left side of the PLC controller 21. The PLC controller 21 collects signals from the lower tension sensor 15 and the upper tension sensor 19 through an analog signal module. After internal program calculation, it controls the speed and direction of the servo motor 10 and the stepper motor 17 through a pulse output module. The touch screen display 22 can display parameters such as tension value and adjustment amount in real time, and supports manual setting of parameters such as tension threshold and speed adjustment.

[0027] Working Principle: This utility model is a tension adjustment mechanism for a continuous casting straightening machine. When this device is in use, the tension sensor 15 first monitors the tension borne by the straightening clamping roller 6 in real time and transmits the detection information to the PLC controller 21. Then, when the tension value exceeds or falls below a set threshold, the servo motor 10 responds promptly and drives the lead screw 2 to rotate, thereby allowing the adjustment frame 3 to move up and down along the direction of the fixed guide rod 13. This, in turn, drives the clamping roller support 5 and the straightening clamping roller 6 to move up and down, completing the adjustment action instantly when tension fluctuations occur, preventing defects in the continuously cast billet due to tension fluctuations. Furthermore, the buffer spring 14, in conjunction with rigid transmission, ensures adjustment accuracy and absorbs instantaneous impact. During the up-and-down movement of the adjusting frame 3, the lifting top frame 7 and the lifting frame 8 can be driven to move up and down simultaneously, thereby enabling the upper straightening roller 9 to move synchronously. This allows the upper straightening roller 9 to move synchronously in conjunction with the lower straightening roller 6. When the tension on the upper straightening roller 9 exceeds or falls below the set threshold, the upper tension sensor 19 can monitor it in real time and transmit the detection information to the PLC controller 21. This allows the stepper motor 17 to rotate in a timely manner, enabling the adjusting screw 18 to rotate and drive the lifting frame 8 and the upper straightening roller 9 to move up and down. This allows for tension adjustment of the upper straightening roller 9. Furthermore, the pre-drive control of the stepper motor 17 enables the upper straightening roller 9 to move up and down for adjustment, thus allowing for adaptive adjustment based on different continuous casting billet models.

[0028] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tension adjustment mechanism for a continuous casting straightening machine, comprising a support frame (1) and a clamping roll support (5), characterized in that: A lead screw (2) is rotatably connected to the middle position of the upper inner side of the support frame (1). An adjustment frame (3) is spirally connected to the outer side of the lead screw (2). A limit slide rod (4) is slidably connected to the right front side and the right rear side of the adjustment frame (3). A clamping roller support (5) is fixedly connected to the lower end of the limit slide rod (4). A pull-down straightening clamping roller (6) is provided on the inner side of the clamping roller support (5). The upper end face of the adjusting frame (3) is fixedly connected to the lifting top frame (7), the upper end wall of the lifting top frame (7) is slidably connected to the lifting frame (8), and the lower side frame of the lifting frame (8) is provided with an upper pull straightening roller (9).

2. The tension adjusting mechanism of a continuous casting straightening machine according to claim 1, characterized in that: There are two support frames (1). The lower inner end of the support frame (1) on the left is fixedly connected to a servo motor (10). The upper end of the output shaft of the servo motor (10) is fixedly connected to a reducer (11). The output end of the reducer (11) is fixedly connected to the lead screw (2) through a coupling.

3. The tension adjustment mechanism of a continuous casting straightening machine according to claim 1, characterized in that: There are two lead screws (2), and a sprocket assembly (12) is provided between the lower ends of the two lead screws (2). The inner sprocket of the sprocket assembly (12) is fixedly connected to the lead screw (2).

4. The tension adjusting mechanism of a continuous casting straightening machine according to claim 1, characterized in that: The upper inner side of the support frame (1) is fixedly connected to the front and rear sides of the upper inner side with fixed guide rods (13), and the fixed guide rods (13) are slidably connected to the adjustment frame (3).

5. The tension adjusting mechanism of a continuous casting straightening machine according to claim 1, characterized in that: A buffer spring (14) is fitted onto the upper surface of the limiting slide bar (4).

6. The tension adjusting mechanism of a continuous casting straightening machine according to claim 1, characterized in that: A tension sensor (15) is fixedly connected to the middle position inside the clamping roller support (5). A first connecting block (16) is fixedly connected to the upper end of the tension sensor (15). The first connecting block (16) is rotatably connected to the pull-down straightening clamping roller (6).

7. The tension adjusting mechanism of a continuous casting straightening machine according to claim 1, characterized in that: A stepper motor (17) is fixedly connected to the middle position of the upper end of the lifting frame (8). An adjusting screw (18) is fixedly connected to the lower end of the output shaft of the stepper motor (17). The adjusting screw (18) is screwed to the lifting top frame (7), and the adjusting screw (18) is rotatably connected to the lifting frame (8).

8. The tension adjusting mechanism of a continuous casting straightening machine according to claim 1, characterized in that: The lower frame of the lifting frame (8) is fixedly connected to the left and right sides of the upper tension sensor (19), and the lower end of the upper tension sensor (19) is fixedly connected to the second connecting block (20), which is rotatably connected to the upper tension clamping roller (9).

9. The tension adjusting mechanism of a continuous casting straightening machine according to claim 1, characterized in that: A PLC controller (21) is fixedly connected to the upper front end of the support frame (1) located on the left side, and a touch screen (22) is electrically connected to the left side of the PLC controller (21).

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