Intelligent pinch roll for high-speed wire rod
By using a servo-driven electric cylinder assembly to drive the swing unit and self-balancing device, the problem of controlling the pressing torque and clamping overlap of the pinch roller on a high-speed wire rod production line is solved, thereby improving product quality and yield, and enhancing the stability and efficiency of the production line.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN BEST JOINER ELECTROMECHANICAL ADVANCED SCI&TECH CO LTD
- Filing Date
- 2024-08-19
- Publication Date
- 2026-04-24
AI Technical Summary
Existing pinch rolls are insufficient to meet the requirements of motion characteristics, responsiveness, and torque control of rolled parts on high-speed wire rod production lines, resulting in indentations on the rolled parts and affecting product quality and yield.
The oscillating unit driven by a servo electric cylinder assembly, combined with a self-balancing device and a roll gap adjustment device, achieves precise control over the pressing torque and clamping overlap. Furthermore, the linkage between the servo motor and the drive motor improves the responsiveness and operational stability of the pinch roll.
It achieves precise control over pressing torque and clamping overlap, improving product quality and yield, reducing adjustment difficulty, and enhancing the stability and efficiency of the production line.
Smart Images
Figure CN224157522U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of metallurgical systems, and in particular relates to an intelligent pinch roll for high-speed wire rod, used to pinch and feed rolled parts on a continuous rolling production line. Background Technology
[0002] Pinch rolls are conveying devices used to clamp and feed rolled works during their movement. They are an indispensable and crucial piece of equipment in continuous steel rolling production lines. Especially with the continuous increase in the output and variety of modern steel production, and the demand for high-speed, high-efficiency, and continuous production methods in steel rolling today, higher requirements are placed on the design and manufacturing quality of pinch roll devices.
[0003] Since the pinch roll device clamps the workpiece during its movement, it has high requirements for motion characteristics, responsiveness, accuracy, stability, and reliability. Existing pinch rolls generally use cylinder-driven oscillating units. However, due to the slow response speed of cylinders, in high-speed wire rod production lines where the workpiece speed is high, the pinch rolls driven by cylinder-driven oscillating units can hardly meet the requirements of the rolling line process in terms of motion characteristics and responsiveness. In addition, the cylinder-driven oscillating units are difficult to control the pressing torque and clamping overlap, which can easily cause indentations on the workpiece.
[0004] In summary, there is a need to design a high-speed intelligent clamping roller for wire rods. By setting up a swing unit driven by a servo electric cylinder assembly, the pressing torque and clamping overlap can be precisely controlled and adjusted online at any time, thereby avoiding indentation on the rolled parts and improving product quality and yield. Summary of the Invention
[0005] The technical problem to be solved by this utility model is to provide an intelligent pinch roller for high-speed wire rod, which is responsive, easy to adjust, stable in operation, and can accurately control the pressing torque and the clamping overlap, thereby improving product quality and yield.
[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is an intelligent pinch roller for high-speed wire rod. It includes an upper swing unit, a lower swing unit, a self-balancing device, a roller gap adjustment device, a servo cylinder assembly, and a drive motor; the servo cylinder assembly and the upper swing unit are connected by a cylindrical pin, the upper swing unit and the lower swing unit are connected by the self-balancing device, the drive motor is connected to the lower swing unit via a coupling, and the roller gap adjustment device is connected to the upper swing unit screw.
[0007] The servo electric cylinder assembly includes a lead screw, a lead screw nut, a push rod, and a servo motor. The rotation of the servo motor is converted into the linear motion of the push rod through the lead screw and lead screw nut. The push rod is connected to the upper swing unit through a cylindrical pin and drives the upper swing unit and the lower swing unit to move.
[0008] Preferably, the balancing device includes a set of meshing sector gears, which are bolted to the upper swing unit and the lower swing unit respectively. The upper swing unit and the lower swing unit are meshed and connected, and swing symmetrically to each other.
[0009] Preferably, the roll gap adjustment device includes a screw and a nut, the nut being engaged in the slot of the upper swing unit to limit the swing position of the upper swing unit.
[0010] Preferably, both the upper and lower oscillating units are two-shaft, two-gear speed-increasing mechanisms. The upper oscillating unit includes an upper input shaft, an upper input gear, an upper output shaft, an upper output gear, and an upper roller; the lower oscillating unit includes a lower input shaft, a lower input gear, a lower output shaft, a lower output gear, and a lower roller; the drive motor drives the lower output shaft via the lower input shaft through the engagement of the lower input gear and the lower output gear, and simultaneously drives the upper input shaft through the engagement of the lower input gear and the upper input gear. The upper input shaft then drives the upper output shaft through the engagement of the upper input gear and the upper output gear. The upper and lower rollers rotate synchronously in opposite directions to clamp the workpiece.
[0011] The lower input shaft is keyed to the lower input gear, the lower output shaft to the lower output gear, and the lower output shaft to the lower roller; the lower input gear and the lower output gear mesh with each other, and the lower input gear is a large gear, while the lower output gear is a small gear. The upper input shaft is keyed to the upper input gear, the upper output shaft to the upper output gear, and the upper output shaft to the upper roller; the upper input gear and the upper output gear mesh with each other, and the upper input gear is a large gear, while the upper output gear is a small gear.
[0012] Preferably, the upper input gear, upper output gear, lower input gear, and lower output gear are all involute helical gears; the wheelbase between the lower input shaft and the upper input shaft is 310mm.
[0013] Preferably, the drive motor is a DC motor or a variable frequency speed control AC motor.
[0014] Preferably, it also includes a control device, which is connected to the servo motor.
[0015] The beneficial effects of this invention are that the upper and lower swing units simultaneously possess the functions of speed-up rotational transmission and clamping / releasing action. The overall structure is simple and compact, with fewer and lighter components involved in the clamping process, reducing the inertia of the clamping rollers, improving clamping capacity, and enhancing operational stability and reliability. Driven by servo-electric cylinder components, the upper and lower swing units exhibit high responsiveness and stability, enabling precise control of the clamping rollers' pressing torque and clamping overlap, which can be adjusted online at any time, effectively improving product quality and yield in the rolling production line. The self-balancing device allows the weights of the upper and lower swing units to cancel each other out, further enhancing operational stability. Furthermore, the self-balancing device requires no adjustment, reducing adjustment difficulty and effectively improving the production efficiency of the rolling production line.
[0016] Other features and advantages of this utility model will be set forth in the following description, and some features will become apparent from the description or may be learned by practicing the utility model. The objects and other advantages of this utility model are realized and obtained through the structures particularly pointed out in the description, claims and drawings.
[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the main body structure of the intelligent pinch roller for high-speed wire rod of this utility model;
[0019] Figure 2 This is a schematic diagram of the structure of the intelligent pinch roller swing unit for high-speed wire rod of this utility model;
[0020] Figure 3 This is a schematic diagram of the oscillating unit on the intelligent pinch roller for high-speed wire rod of this utility model;
[0021] Figure 4 This is a plan view of the structure of the intelligent pinch roller for high-speed wire rod of this utility model.
[0022] In the picture:
[0023] 1. Upper swing unit; 2. Lower swing unit; 3. Self-balancing device
[0024] 4. Roll gap adjustment device; 5. Servo electric cylinder assembly; 6. Lower input shaft
[0025] 7. Lower input gear; 8. Lower output shaft; 9. Lower output gear
[0026] 10. Lower roller; 11. Upper input shaft; 12. Upper input gear
[0027] 13. Upper output shaft; 14. Upper output gear; 15. Upper roller.
[0028] 16. Drive motor 17. Rolled piece Detailed Implementation
[0029] 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.
[0030] To facilitate understanding of this embodiment, a detailed description of the intelligent pinch roller for high-speed wire rod disclosed in this utility model embodiment will be provided first, such as... Figure 1 As shown, this utility model discloses an intelligent pinch roll for high-speed wire rods, comprising an upper swing unit 1, a lower swing unit 2, a self-balancing device 3, a roll gap adjustment device 4, and a servo cylinder assembly 5. The servo cylinder assembly 5 is connected to the upper swing unit 1 via a cylindrical pin, and the upper swing unit 1 swings via the movement of the servo cylinder push rod. The roll gap adjustment device 4 is screwed to the upper swing unit 1. The drive motor 16 is connected to the lower swing unit 2 via a coupling. The upper swing unit 1 and the lower swing unit 2 are connected via the self-balancing device 3. The self-balancing device 3 includes a pair of meshing sector gears, bolted to the upper swing unit 1 and the lower swing unit 2 respectively. The upper swing unit 1 and the lower swing unit 2 are meshed and swing symmetrically. The roll gap adjustment device 4 includes a screw and a nut. The nut is inserted into the groove of the upper swing unit 1. When the screw rotates, the nut moves up and down, limiting the swing position of the upper swing unit 1, thereby adjusting the output position and roll gap size of the swing unit to adapt to different specifications of rolled products and improve the production efficiency of the rolling production line.
[0031] The servo electric cylinder assembly 5 includes a lead screw, a lead screw nut, a push rod, and a servo motor. The rotation of the servo motor is converted into the linear motion of the push rod through the lead screw and lead screw nut. The push rod is connected to the upper swing unit 1 through a cylindrical pin and drives the upper swing unit 1 and the lower swing unit 2 to perform opening and closing actions.
[0032] like Figure 2As shown, the lower swing unit 2 is a two-shaft, two-gear speed-increasing mechanism. The lower swing unit 2 includes a lower input shaft 6, a lower input gear 7, a lower output shaft 8, a lower output gear 9, and a lower roller 10. The lower input shaft 6 is keyed to the lower input gear 7, the lower output shaft 8 is keyed to the lower output gear 9, and the lower output shaft 8 is keyed to the lower roller 10. The lower input gear 7 and the lower output gear 9 mesh with each other, and the lower input gear 7 is a large gear, while the lower output gear 9 is a small gear, thereby achieving output speed increase.
[0033] like Figure 3 As shown, the upper swing unit 1 is a two-shaft, two-gear speed-increasing mechanism. The upper swing unit 1 includes an upper input shaft 11, an upper input gear 12, an upper output shaft 13, an upper output gear 14, and an upper roller 15. The upper input shaft 11 is keyed to the upper input gear 12, the upper output shaft 13 is keyed to the upper output gear 14, and the upper output shaft 13 is keyed to the upper roller 15. The upper input gear 12 and the upper output gear 14 mesh with each other, with the upper input gear 12 being a larger gear and the upper output gear 14 being a smaller gear, thus achieving output speed increase. The upper input gear 12 and the lower input gear 7 have the same number of teeth, causing the upper roller 15 and the lower roller 10 to rotate at the same speed but in opposite directions.
[0034] like Figure 4 As shown, the transmission motor 16 drives the upper swing unit 1 and the lower swing unit 2 to rotate. The servo electric cylinder assembly 5 simultaneously drives the upper swing unit 1 and the lower swing unit 2 to move symmetrically to clamp and release the rolled piece 17. The upper swing unit 1 and the lower swing unit 2 driven by the servo electric cylinder assembly 5 have the characteristics of high responsiveness and high stability.
[0035] Specifically, the transmission motor 16 drives the lower output shaft 8 via the lower input shaft 6, which meshes with the lower output gear 9 through the lower input gear 7. At the same time, it drives the upper input shaft 11 via the lower input gear 7 and the upper input gear 12. The upper input shaft 11 then drives the upper output shaft 13 via the upper input gear 12 and the upper output gear 4. The lower roller 10 and the upper roller 15 rotate synchronously in opposite directions to clamp and brake the rolled piece 17.
[0036] Furthermore, it can achieve simultaneous movement of the upper swing unit 1 and the lower swing unit 2, and the upper roller 15 and the lower roller 10, with the movement trajectories of the upper swing unit 1 and the lower swing unit 2, and the upper roller 15 and the lower roller 10 being completely symmetrical with respect to the clamping brake center line. It can also achieve self-balancing by canceling out the weights of the upper swing unit 1 and the lower swing unit 2, without the need for any balance adjustment.
[0037] In this invention, the drive motor 16 is a DC motor or a variable frequency speed-regulating AC motor to improve the responsiveness of the device. The upper input gear 12, upper output gear 14, lower input gear 7, and lower output gear 9 are all involute helical gears to improve the clamping capacity of the intelligent pinch roller for high-speed wire rods; the axial distance between the lower input shaft 6 and the upper input shaft 11, or the center distance of the pinch roller, is 310mm.
[0038] Furthermore, the intelligent pinch roll for high-speed wire rod of this invention is suitable for pinching rolled pieces with a cross-section of φ5~φ18mm. The pinching material of the rolled piece can be plain carbon steel, high-quality carbon structural steel, low alloy steel, etc. The pinching speed of the rolled piece is ≤75m / s and is adjustable.
[0039] By utilizing the closed-loop control characteristics of servo motors, it is possible to easily achieve high-intensity, high-speed, high-precision motion, smooth motion, and low noise. When connected to control devices such as PLCs, it can achieve precise motion control. The swing unit driven by the servo electric cylinder assembly can accurately control the pressing torque and clamping overlap, and can be adjusted online at any time, thereby avoiding indentations on the rolled parts and improving product quality and yield.
[0040] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A smart pinch roller for high-speed wire rod, characterized in that, It includes an upper swing unit, a lower swing unit, a self-balancing device, a roll gap adjustment device, a servo electric cylinder assembly, and a drive motor; The servo electric cylinder assembly and the upper swing unit are connected by a cylindrical pin shaft, the upper swing unit and the lower swing unit are connected by a self-balancing device, the drive motor is connected to the lower swing unit through a coupling, and the roll gap adjustment device is connected to the upper swing unit screw. The self-balancing device includes a pair of meshing sector gears, which are bolted to the upper swing unit and the lower swing unit respectively. The upper swing unit and the lower swing unit are meshed and oscillate symmetrically. The servo electric cylinder assembly includes a lead screw, a lead screw nut, a push rod, and a servo motor. The rotation of the servo motor is converted into the linear motion of the push rod through the lead screw and lead screw nut. The push rod is connected to the upper swing unit through a cylindrical pin and drives the upper swing unit and the lower swing unit to move.
2. The intelligent pinch roller for high-speed wire rod according to claim 1, characterized in that, The roll gap adjustment device includes a screw and a nut. The nut is engaged in the slot of the upper swing unit to limit the swing position of the upper swing unit.
3. The intelligent pinch roller for high-speed wire rod according to claim 1, characterized in that, Both the upper swing unit and the lower swing unit are two-axis, two-gear speed-increasing mechanisms. The upper swing unit includes an upper input shaft, an upper input gear, an upper output shaft, an upper output gear, and an upper roller; The lower swing unit includes a lower input shaft, a lower input gear, a lower output shaft, a lower output gear, and a lower roller; The drive motor drives the lower output shaft via the lower input shaft, which meshes with the lower input gear and the lower output gear. Simultaneously, it drives the upper input shaft via the lower input gear and the upper input gear. The upper input shaft then drives the upper output shaft via the upper input gear and the upper output gear. The upper and lower rollers rotate synchronously in opposite directions to clamp and feed the workpiece.
4. The intelligent pinch roller for high-speed wire rod according to claim 3, characterized in that, The lower input shaft is keyed to the lower input gear, the lower output shaft is keyed to the lower output gear, and the lower output shaft is keyed to the lower roller; the lower input gear and the lower output gear mesh with each other, and the lower input gear is a large gear and the lower output gear is a small gear; The upper input shaft is keyed to the upper input gear, the upper output shaft is keyed to the upper output gear, and the upper output shaft is keyed to the upper roller; the upper input gear and the upper output gear mesh with each other, and the upper input gear is a large gear and the upper output gear is a small gear.
5. The intelligent pinch roller for high-speed wire rod according to claim 3, characterized in that, The upper input gear, upper output gear, lower input gear, and lower output gear are all involute helical gears; the wheelbase between the lower input shaft and the upper input shaft is 310mm.
6. The intelligent pinch roller for high-speed wire rod according to claim 1, characterized in that, The drive motor is either a DC motor or a variable frequency speed control AC motor.
7. The intelligent pinch roller for high-speed wire rod according to claim 1, characterized in that, It also includes a control device, which is connected to the servo motor.