CN218998589U

CN218998589U - Servo driver structure for correcting machine

Info

Publication number: CN218998589U
Application number: CN202222681449.1U
Authority: CN
Inventors: 邓志健
Original assignee: Shanghai Baoxie New Energy Technology Co ltd
Current assignee: Shanghai Baoxie New Energy Technology Co ltd
Priority date: 2022-10-12
Filing date: 2022-10-12
Publication date: 2023-05-09
Anticipated expiration: 2032-10-12

Abstract

The utility model discloses a servo driver structure for a straightening machine, and aims to provide a servo driver structure for a straightening machine with good driving control effect. Including the straightening machine, the straightening machine is provided with a plurality of correction rollers, the correction roller is connected with the gearbox, the gearbox is external to be connected with a plurality of servo motor, servo motor is connected with servo driver, servo driver is connected with Profinet module electricity, servo driver is connected with the installation storehouse, profinet module is arranged in the installation storehouse, installation storehouse lateral wall is connected with a plurality of heating panels. The beneficial effects of the utility model are as follows: the synchronous precision of a plurality of correction rollers can be ensured by adopting a multi-turn absolute value encoder or a 14-bit incremental encoder, which is beneficial to improving the drive control effect; the cooling effect in the installation bin can be guaranteed to the fin that sets up outside the installation bin and the air guide fan that sets up in the installation bin, avoids the too high normal work of influence of temperature, guarantees drive control effect.

Description

Servo driver structure for correcting machine

Technical Field

The utility model relates to the technical field of straightening machines, in particular to a servo driver structure for a straightening machine.

Background

At present, in factories for producing rolling hot steel plates at home, in order to improve the yield of the steel plates, straightening machines are installed in finishing workshops. The straightening machine is one of main production equipment on a faithful plate production line and is used for straightening the steel plate to ensure that the flatness of the steel plate meets the national standard and the requirements of customers. In order to improve the correcting effect, modern correcting machines adopt various technical means. In the production process of the straightening machine, the adopted driving mode is the driving mode of a variable-frequency asynchronous motor and a gearbox, the variable-frequency asynchronous motor is low in efficiency and large in energy consumption, the energy utilization is not facilitated, and meanwhile, the control mode is variable-frequency control, the control precision is low, and the driving control effect is poor.

Chinese patent grant bulletin number: CN 217428563U, authorized bulletin day: 2022.09.3A servo driver heat radiation structure and a servo driver are disclosed, comprising a servo driver body, wherein the bottom of the servo driver body is movably connected with two support plates, the inner cavity of the servo driver body is movably connected with a dust screen, and the rear side of the servo driver body is provided with an adjusting mechanism; the adjusting mechanism comprises two movable plates, radiating holes, a handle and a hinge, wherein one side of the movable plate, which is close to the servo driver body, is movably connected with the inner cavity of the servo driver body, the radiating holes are formed in the surface of the movable plate, the number of the radiating holes is a plurality of, one side of the handle, which is close to the movable plate, is fixedly connected with the movable plate, and one side of the hinge, which is close to the movable plate, is movably connected with the movable plate. This solution solves the problem of heat dissipation of the servo driver, but does not improve the drive control effect.

Disclosure of Invention

The utility model provides a servo driver structure for a correcting machine, which aims to overcome the defect of poor driving control effect in the prior art.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a servo driver structure that straightening machine was used, includes the straightening machine, the straightening machine is provided with a plurality of correction rollers, the correction roller is connected with the gearbox, the gearbox is external to be connected with a plurality of servo motor, servo motor is connected with servo driver, servo driver is connected with Profinet module electricity, servo driver is connected with the installation storehouse, the Profinet module is arranged in the installation storehouse, installation storehouse lateral wall is connected with a plurality of heating panels.

The straightening machine is provided with a plurality of straightening rollers, the straightening rollers are divided into two layers to be arranged, the number of the straightening rollers arranged on the upper layer is one less than that of the straightening rollers arranged on the lower layer, and the straightening rollers on the upper layer and the central axes of the straightening rollers on the lower layer are staggered. The correction device comprises a correction roller, a servo motor, a speed changing box, a plurality of mutually meshed reduction gears, a servo motor, a correction roller, a servo motor, a correction roller and a speed changing plate. The servo motor is connected with a servo driver, and the servo driver can control the rotating speed of the servo motor to meet the use requirement. The servo driver is electrically connected with the Profinet module, the PLC sends a rotating speed setting command to the servo driver through a bus of the Profinet module in the servo system, the servo driver compares the difference value of the rotating speed setting given by the PLC and the rotating speed feedback value fed back by the encoder with the PID in a speed ring of the servo driver, synchronous control of a plurality of servo motors is achieved, meanwhile, according to the given control output torque of a current ring, automatic distribution control of the torque of the servo motors under the synchronous rotating speed control state of the plurality of servo motors is achieved, the synchronous speed nose ring control function of the plurality of servo motors is achieved by adopting a servo control mode, and automatic torque distribution can be achieved, so that the driving control effect is good. Wherein servo driver and Profinet module are installed in the installation storehouse, and the installation storehouse sets up the heating panel outward, and the heating panel can make the heat in the installation storehouse spread with higher speed, guarantees servo driver's operating temperature in reasonable within range, avoids the heat dissipation not enough to lead to servo driver work unusual, influences drive control effect.

Preferably, the gearbox employs a 7:1 speed ratio. The low speed ratio of 7:1 adopted by the gearbox can reduce the number of internal gears of the gearbox, simplify the structure, reduce the running speed of the gearbox and prolong the service life of the gearbox.

Preferably, the servo motor is connected with a multi-turn absolute value encoder or a 14-bit incremental encoder. The adopted multi-circle absolute value encoder or 14-bit incremental encoder can ensure the synchronous precision of a plurality of correction rollers, realize the synchronous control of position closed loop and speed, and is beneficial to improving the drive control effect.

Preferably, a universal joint is connected between the gearbox and the leveling roller. The universal joint adopts fatigue torque 43000Nm and rated torque 13000Nm, and the universal joint of the specification can meet the connection of a servo motor and a correction roller, so that the stress distribution is uniform, and the drive control effect is ensured.

Preferably, the installation bin is of a box body structure, a plurality of ventilation holes are formed in two side walls of the installation bin, the servo driver is connected with the side walls of the installation bin, and the Profinet module is connected with the bottom surface of the installation bin. The installation storehouse sets up to the box body structure, and the bleeder vent that the installation storehouse lateral wall set up is used for the heat dissipation, and servo driver installs on the lateral wall of installation storehouse, and the Profinet module is installed in the bottom of installation storehouse for it is reasonable to arrange in the installation storehouse, and the heat dissipation of servo driver and Profinet module in the installation storehouse of being convenient for guarantees servo driver's radiating effect, avoids the heat dissipation not enough to lead to servo driver work unusual, influences drive control effect.

Preferably, the radiating plate is wavy, and the radiating plate is obliquely arranged with the outer wall of the installation bin. The heating panel is the wave, and arranges for the slope when being connected with the installation storehouse outer wall, guarantees the radiating effect in installation storehouse, avoids the installation storehouse heat dissipation not enough, leads to servo driver and Profinet module work unusual, influences drive control effect.

Preferably, air guide fans are arranged on the inner walls of the two sides of the installation bin, and the air guide fans correspond to the air holes. The air guide fan plays a role in discharging air in the installation bin from the air holes, so that the temperature in the installation bin is reduced, the heat dissipation effect is improved, the normal operation of the servo driver and the Profinet module is ensured, and the driving control effect is good.

Preferably, the rated torque 8000Nm and rated rotation speed 500rpm are adopted for the servo motor. In consideration of the possibility of irregular distribution of stress when the multiple correction rollers are synchronously driven in a linkage way, the servo motor is selected by considering enough safety factors, so that rated torque 8000Nm and rated rotation speed 500rpm are selected.

The beneficial effects of the utility model are as follows: the synchronous precision of a plurality of correction rollers can be ensured by adopting a multi-circle absolute value encoder or a 14-bit incremental encoder, and the synchronous control of position closed loop and speed is realized at the same time, so that the drive control effect is improved; the cooling effect in the installation bin can be ensured by the cooling fins arranged outside the installation bin and the air guide fan arranged in the installation bin, so that the servo driver and the Profinet module can work normally, the influence of overhigh temperature on the normal work is avoided, and the driving control effect is ensured; the servo motor selects rated torque 8000Nm and rated rotation speed 500rpm, so that the stress distribution is ensured to meet the production requirement, and the drive control effect is ensured.

Drawings

FIG. 1 is a perspective view of the present utility model;

FIG. 2 is a view showing the internal structure of the mounting bin of the present utility model;

fig. 3 is an enlarged view at a in fig. 1.

In the drawings of which there are shown,

1. straightening machine, straightening roller, gear box, servo motor, servo driver, profinet module, mounting bin, universal joint, heat dissipating plate, 71, air guiding fan and air hole.

Detailed Description

The utility model is further described below with reference to the drawings and detailed description. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In addition, the terms "first", "second", etc. are used to define the components, and are merely for convenience of distinguishing the corresponding components, and unless otherwise stated, the terms have no special meaning, and thus should not be construed as limiting the scope of the present application.

Embodiment 1 as shown in fig. 1-3, a servo driver structure for a straightening machine includes a straightening machine 1. The straightening machine 1 is provided with a number of straightening rollers 2. The leveling roller 2 is connected with a gearbox 3. The gearbox 3 is externally connected with a plurality of servo motors 4. The servo motor 4 is connected with a servo driver 5. The servo drive 5 is electrically connected to a Profinet module 6. The servo driver 5 is connected with a mounting bin 7. The Profinet module 6 is placed in a mounting bin 7. The side wall of the installation bin 7 is connected with a plurality of radiating plates 70.

The gearbox 3 adopts a rotation speed ratio of 7:1. The servo motor 4 is connected with a multi-turn absolute value encoder or a 14-bit incremental encoder. A universal joint 9 is connected between the gearbox 3 and the straightening roller 2.

The mounting bin 7 is of a box body structure. The two side walls of the installation bin 7 are provided with a plurality of ventilation holes 72. The servo driver 5 is connected with the side wall of the installation bin 7. The Profinet module 6 is connected with the bottom surface of the installation bin 7.

The heat dissipation plate 70 has a wave shape. The heat dissipation plate 70 is obliquely arranged with the outer wall of the installation bin 7.

The inner walls of the two sides of the installation bin 7 are provided with air guide fans 71. The air guide fan 71 corresponds to the air holes 72.

The servo motor 4 adopts rated torque 8000Nm and rated rotation speed 500rpm.

The principle of the utility model is as follows: as shown in fig. 1-3, the straightening machine 1 adopts a mounting form of 17 straightening rollers 2, the straightening rollers 2 are arranged in an upper layer and a lower layer, wherein 8 straightening rollers 2 are arranged on the upper layer, 9 straightening rollers 2 are arranged on the lower layer, and the straightening rollers 2 on the upper layer and the straightening rollers 2 on the lower layer are in an axis staggered form. The leveling rollers 2 are connected with gearboxes 3, wherein the gearboxes 3 are provided with 6 gearboxes, and each gearbox 3 is connected with one servo motor 4. Wherein the arrangement of the matched driving mode of the straightening rollers 2 and the gear box 3 adopts a form of 3+3+3+3+3+2, namely, the adjacent three straightening rollers 2 are matched with one gear box 3. Wherein the rotation speed ratio of the gearbox 3 is 7:1, the design reduces the number of gears, simplifies the structure, reduces the running speed of the gearbox 3 and prolongs the service life of the gearbox. When the steel sheet is corrected by the correction rollers 2, the average input torque of each correction roller 2 is 10291Nm, and the rated torque parameter of the universal joint 9 used is 13000Nm. Wherein, one servo motor 4 drives three correction rollers 2, so that the output torque of the gearbox 3 is 39000Nm, and the torque requirement of the servo motor 4 is 5571Nm because the rotation speed ratio of the gearbox 3 is 1:7. When the synchronous linkage driving of the multiple correcting rollers 2 is considered, the distribution possibility of stress irregularity is considered, a sufficient safety factor is considered for the type selection of the servo motor 4, and the torque of the servo motor 4 is 7799Nm according to the value of 1.4 times of the torque. Therefore, when the servo motor 4 is selected, the rated torque is 8000Nm and the rated rotational speed is 500rpm. The servo motors 4 have constant torque output characteristics under rated rotation speed and short-time 1.75 times torque overload capacity, so that each servo motor 4 can output 14000Nm in short time, and the maximum peak value can reach 16000Nm, thereby meeting the use requirement. In order to ensure the synchronous precision of a plurality of correction rollers 2, the servo motor 4 is connected with a multi-circle absolute value encoder or an incremental encoder 14 is used as a detection unit, so that position closed loop and speed synchronous control are realized, and a better driving control effect is realized.

Wherein, servo motor 4 is connected with servo driver 5, according to selected servo motor 4, through calculation, servo driver 5 selects rated current to be 900A, and can overload 1.5 times 1min, the peak value can reach 1350A's BXTZ380X450 type driver. Wherein each servo motor 4 is connected with one servo driver 5, meanwhile, each 3 servo drivers 5 are connected with a Profinet module 6, a PLC sends 'rotational speed setting' to the servo drivers 5 through a bus of the Profinet module 6 by the Profinet module 6 of a servo system, the servo drivers 5 carry out PID comparison on the speed ring of the servo drivers 5 on the difference value of the 'rotational speed setting' given by the PLC and the 'rotational speed feedback' value fed back by an encoder, synchronous control of a plurality of servo motors 4 is realized, and meanwhile, according to the 'given' control output torque of a current ring, torque of the servo motors 4 can be automatically distributed and controlled under the condition of keeping synchronous rotational speed control of the plurality of servo motors 4, so that the driving control effect is better.

The servo drive 5 and the Profinet module 6 are both mounted in the mounting bin, wherein the servo drive 5 is mounted on the inner wall of the rear side of the mounting bin 7 and the Profinet module 6 is mounted on the bottom of the mounting bin 7.

The heat dissipation plate 70 is arranged on the outer side of the installation bin 7, and the heat dissipation plate 70 is a wavy plate which is obliquely arranged, so that the heat dissipation effect on the installation bin 7 can be accelerated. Meanwhile, the air holes 72 are formed in the side wall of the installation bin 7, the air guide fan 71 is arranged on the inner wall of the installation bin 7, the air guide fan 71 is opposite to the air holes 72, the air in the installation bin 7 can be blown out from the air holes 72 through rotation of the air guide fan 71, air flow in the installation bin 7 is accelerated, the temperature in the installation bin 7 is prevented from being too high, normal operation of the servo driver 5 and the Profinet module 6 is prevented from being influenced, and the driving control effect is ensured to be normal.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. The utility model provides a servo driver structure that straightening machine was used, includes straightening machine (1), straightening machine (1) is provided with a plurality of correction roller (2), characterized by, correction roller (2) are connected with gearbox (3), gearbox (3) external a plurality of servo motor (4), servo motor (4) are connected with servo driver (5), servo driver (5) are connected with Profinet module (6) electricity, servo driver (5) are connected with installation storehouse (7), in installation storehouse (7) are arranged in Profinet module (6), installation storehouse (7) lateral wall is connected with a plurality of heating panels (70).

2. A servo drive arrangement for a straightening machine according to claim 1, characterised in that the gearbox (3) adopts a speed ratio of 7:1.

3. A servo driver structure for a straightening machine according to claim 1, characterized in that the servo motor (4) is connected with a multi-turn absolute value encoder or a 14-bit incremental encoder.

4. A servo drive structure for a straightening machine according to claim 1, characterized in that a universal joint (9) is connected between the gearbox (3) and the straightening roll (2).

5. The servo driver structure for the straightening machine according to claim 1, characterized in that the installation bin (7) is of a box body structure, a plurality of ventilation holes (72) are formed in two side walls of the installation bin (7), the servo driver (5) is connected with the side walls of the installation bin (7), and the Profinet module (6) is connected with the bottom surface of the installation bin (7).

6. A servo driver structure for a straightening machine according to claim 1, characterized in that the heat radiating plate (70) is wave-shaped, and the heat radiating plate (70) is obliquely arranged with the outer wall of the mounting bin (7).

7. The servo driver structure for the straightening machine according to claim 5, characterized in that air guide fans (71) are arranged on the inner walls of the two sides of the installation bin (7), and the air guide fans (71) correspond to the air holes (72).

8. A servo drive structure for a straightening machine according to claim 1, characterized in that the servo motor (4) adopts a rated torque of 8000Nm and a rated rotation speed of 500rpm.