CN103193102A - Floating roll device for film production device - Google Patents
Floating roll device for film production device Download PDFInfo
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Abstract
本发明为薄膜生产设备的浮动辊装置,浮动辊两端各可转动地连接一个转臂,左、右2个转臂的中部各与一个气缸的活塞杆相铰接,气缸缸筒连接于墙板。2转臂与旋转杆固定连接,旋转杆两端可转动地安装于墙板。旋转杆一端接有位置检测机构角度编码器,编码器信号线与卷筒传动电机控制机构连接。薄膜从前导向辊向下,绕过浮动辊下方,再向上经后导向辊卷取到卷筒上。配重块安装于转臂相对于浮动辊的远端。薄膜作用在浮动辊上的拉力、浮动辊的重力、气缸的推力及配重块的重力相平衡,浮动辊处于平衡位置。本装置适应薄膜张力值可由2N至200N,可用于不同规格的塑料薄膜,也可用于纸张,或布匹;采用低摩擦气缸,灵敏度达±0.01N。
The present invention is a floating roller device for film production equipment. Both ends of the floating roller are rotatably connected to a rotating arm, and the middle parts of the left and right rotating arms are respectively hinged to the piston rod of a cylinder, and the cylinder barrel of the cylinder is connected to the wallboard. . 2. The rotating arm is fixedly connected with the rotating rod, and the two ends of the rotating rod are rotatably installed on the wallboard. One end of the rotating rod is connected with an angle encoder of a position detection mechanism, and the signal line of the encoder is connected with the control mechanism of the reel drive motor. The film goes down from the front guide roller, goes around the bottom of the floating roller, and then winds up to the reel through the rear guide roller. A counterweight is mounted on the far end of the boom relative to the dancer roller. The pulling force of the film on the floating roller, the gravity of the floating roller, the thrust of the cylinder and the gravity of the counterweight are balanced, and the floating roller is in a balanced position. This device can adapt to the film tension value from 2N to 200N, and can be used for plastic films of different specifications, as well as paper or cloth; it adopts a low-friction cylinder with a sensitivity of ±0.01N.
Description
技术领域technical field
本发明涉及薄膜生产设备,具体为一种薄膜生产设备的浮动辊装置。The invention relates to film production equipment, in particular to a floating roller device of the film production equipment.
背景技术Background technique
薄膜生产加工的收卷放卷工序中膜卷的直径是在不断地变化的,膜卷直径的变化会引起膜卷卷材张力改变。如果薄膜卷材张力过小,导致膜卷松弛起皱,卷入大量空气,卷材横向走偏不平整。如果薄膜卷材张力过大,则导致卷材拉伸过度,薄膜表面会出现纵向张力线,在膜卷的表面上会出现隆起的筋条,甚至会使薄膜变形断裂。因此,在薄膜收、放卷过程中,为保证生产效率和薄膜的表面质量,必须始终保持张力恒定。In the winding and unwinding process of film production and processing, the diameter of the film roll is constantly changing, and the change in the diameter of the film roll will cause the tension of the film roll to change. If the tension of the film roll is too small, the film roll will loosen and wrinkle, a large amount of air will be involved, and the roll will be uneven in the transverse direction. If the tension of the film roll is too high, the roll will be overstretched, longitudinal tension lines will appear on the surface of the film, raised ribs will appear on the surface of the film roll, and even the film will be deformed and broken. Therefore, in the process of film winding and unwinding, in order to ensure the production efficiency and the surface quality of the film, the tension must always be kept constant.
在实际生产中,卷取薄膜的膜卷表面线速度是随膜卷直径的增大而动态变化的,同时前方设备输送来的薄膜的速度也会随生产速度的变化而改变,这些都会造成薄膜上的张力不断地变化。为了使薄膜的张力保持恒定,就必须根据膜卷张力的大小自动调整收卷卷筒的转速。In actual production, the surface line speed of the film roll that takes up the film changes dynamically as the diameter of the film roll increases. At the same time, the speed of the film conveyed by the front equipment will also change with the change of the production speed, which will cause the film The tension on it is constantly changing. In order to keep the tension of the film constant, it is necessary to automatically adjust the speed of the winding reel according to the tension of the film roll.
目前较常采用浮动辊装置检测张力、控制卷筒的转速。前方工序输送的薄膜经过导向辊被卷筒卷取,浮动辊设置于2个导向辊之间,浮动辊低于导向辊,浮动辊两端可转动地各连接有转臂,左右转臂中部与气缸的活塞杆相接。转臂的另一侧接有位置检测机构,位置检测机构的信号与卷筒电机控制机构连接。薄膜从前导向辊向下,绕过浮动辊下方,再向上经后导向辊卷取到卷筒上。开始时薄膜作用在浮动辊上的拉力与浮动辊自身的重力及气缸的推力相平衡,浮动辊处于平衡位置。随着膜卷直径的加大,薄膜的线速度增大,作用于薄膜的拉力增大,浮动辊向上摆动。浮动辊向上摆动带动转臂摆动,其所接的位置检测机构动作,信号送至卷筒电机控制机构,降低卷筒转速,薄膜张力恢复到给定值,浮动辊回到平衡位置。At present, the floating roller device is more commonly used to detect the tension and control the speed of the reel. The film conveyed by the previous process passes through the guide roller and is taken up by the reel. The floating roller is set between the two guide rollers. The floating roller is lower than the guide roller. Both ends of the floating roller are rotatably connected with rotating arms. The piston rods of the cylinders meet. The other side of the rotating arm is connected with a position detection mechanism, and the signal of the position detection mechanism is connected with the reel motor control mechanism. The film goes down from the front guide roller, goes around the bottom of the floating roller, and then winds up to the reel through the rear guide roller. At the beginning, the pulling force of the film on the floating roller is balanced with the gravity of the floating roller and the thrust of the cylinder, and the floating roller is in a balanced position. As the diameter of the film roll increases, the linear speed of the film increases, the tension acting on the film increases, and the floating roller swings upward. The floating roller swings upwards to drive the rotating arm to swing, and the position detection mechanism connected to it operates, and the signal is sent to the reel motor control mechanism to reduce the reel speed, the film tension returns to a given value, and the floating roller returns to the equilibrium position.
但是现有的浮动辊装置灵敏度不高,卷材张力改变达20N(牛顿)以上才能调节卷筒速度。仍不能完全保证膜卷的质量。另外,此种浮动辊装置只能对应一种薄膜张力进行调节控制。当生产不同规格的薄膜时、薄膜张力不同,浮动辊装置无法调节适应。However, the sensitivity of the existing floating roller device is not high, and the speed of the reel can only be adjusted when the tension of the coil reaches more than 20N (Newton). Still cannot fully guarantee the quality of film rolls. In addition, this floating roller device can only be adjusted and controlled corresponding to one kind of film tension. When producing films of different specifications, the film tension is different, and the floating roller device cannot be adjusted to adapt.
为了提高浮动辊装置的控制精度申请号为CN200710031010.1的中国发明专利申请“流延膜机收卷机构的新型浮动辊装置”公开的方案采用摆动臂、2个支轴及同步轮、同步带的结构。但此方案结构复杂,调节困难,不易实施使用。In order to improve the control accuracy of the floating roller device, the Chinese invention patent application No. CN200710031010.1 "New floating roller device for the winding mechanism of the cast film machine" discloses a swing arm, two supporting shafts, a synchronous wheel, and a synchronous belt. Structure. However, this scheme has a complex structure, difficult adjustment, and is not easy to implement and use.
发明内容Contents of the invention
本发明的目的是设计一种薄膜生产设备的浮动辊装置,包括导向辊、浮动辊、转臂、气缸、位置检测机构动作及卷筒电机控制机构,在转臂的远端还有配重块,可平衡薄膜的张力与浮动辊重力、气缸作用力,适应不同规格薄膜的张力给定值。The purpose of the present invention is to design a floating roller device for film production equipment, including guide rollers, floating rollers, rotating arms, cylinders, position detection mechanism actions and reel motor control mechanisms, and a counterweight at the far end of the rotating arm , can balance the tension of the film with the gravity of the floating roller and the force of the cylinder, and adapt to the given tension value of the film with different specifications.
本发明设计的薄膜生产设备的浮动辊装置,包括导向辊、浮动辊、转臂、气缸、位置检测机构及卷筒电机控制机构,浮动辊设置于2个导向辊之间,浮动辊低于导向辊,薄膜从前导向辊向下,绕过浮动辊下方,再向上经后导向辊卷取到卷筒上、形成膜卷。The floating roller device of the film production equipment designed by the present invention includes a guide roller, a floating roller, a rotating arm, a cylinder, a position detection mechanism and a reel motor control mechanism, the floating roller is arranged between two guiding rollers, and the floating roller is lower than the guiding roller. Roller, the film goes down from the front guide roller, bypasses the bottom of the floating roller, and then winds up to the reel through the rear guide roller to form a film roll.
浮动辊两端各固定连接一个转臂,左、右2个转臂的中部各与一个气缸的活塞杆相铰接,气缸的缸筒连接于设备的墙板。转臂接有位置检测机构,位置检测机构的信号与卷筒电机控制机构连接。薄膜从前导向辊向下,绕过浮动辊下方,再向上经后导向辊卷取到卷筒上。本发明设计的浮动辊装置还配置有旋转杆和配重块,旋转杆两端可转动地安装于设备的墙板,转臂与旋转杆固定连接,气缸活塞杆与转臂的连接点处于旋转杆与浮动辊之间。配重块安装于转臂相对于浮动辊的远端。位置检测机构为角度编码器,经联轴器与旋转杆连接,角度编码器的信号线与卷筒电机控制机构连接。Both ends of the floating roller are fixedly connected to a rotating arm, and the middle parts of the left and right rotating arms are hinged to the piston rod of a cylinder, and the cylinder barrel of the cylinder is connected to the wallboard of the equipment. The rotating arm is connected with a position detection mechanism, and the signal of the position detection mechanism is connected with the reel motor control mechanism. The film goes down from the front guide roller, goes around the bottom of the floating roller, and then winds up to the reel through the rear guide roller. The floating roller device designed in the present invention is also equipped with a rotating rod and a counterweight. The two ends of the rotating rod are rotatably installed on the wallboard of the equipment. between the rod and the floating roller. A counterweight is mounted on the far end of the boom relative to the dancer roller. The position detection mechanism is an angle encoder, which is connected with the rotating rod through a shaft coupling, and the signal line of the angle encoder is connected with the reel motor control mechanism.
开始时薄膜作用在浮动辊上的拉力、浮动辊的重力、气缸的推力及配重块的重力相平衡,浮动辊处于平衡位置。对于不同的薄膜,张力不同,调节配重块即可使浮动辊处于设定的平衡位置。At the beginning, the pulling force of the film on the floating roller, the gravity of the floating roller, the thrust of the cylinder and the gravity of the counterweight are balanced, and the floating roller is in a balanced position. For different films, the tension is different, and the floating roller can be in the set balance position by adjusting the counterweight.
随着膜卷直径的加大,薄膜的线速度增大,作用于薄膜的拉力增大,浮动辊向上摆动。浮动辊向上摆动带动两侧转臂转动,旋转杆带动角度编码器同步旋转,角度编码器测得转动角度信号送至卷筒电机控制机构调节卷筒电机速度,卷筒电机的转速下降,薄膜的张力恢复到给定值,浮动辊又回到原来的平衡位置。As the diameter of the film roll increases, the linear speed of the film increases, the tension acting on the film increases, and the floating roller swings upward. The floating roller swings upwards to drive the rotating arms on both sides to rotate, and the rotating rod drives the angle encoder to rotate synchronously. The angle encoder measures the rotation angle signal and sends it to the reel motor control mechanism to adjust the reel motor speed. The tension returns to a given value, and the floating roller returns to its original equilibrium position.
为提高装置的灵敏度,所述气缸为低摩擦气缸,气源压力变化值低至0.005Mpa也能使气缸活塞产生动作,可精确控制0.01N的输出力。薄膜张力有0.01N的微小变化,气缸活塞就能动作,使转臂转动,角度编码器检测转臂的转动即可及时调整卷筒电机速度,使收卷运行更趋于稳定。In order to improve the sensitivity of the device, the cylinder is a low-friction cylinder, and the change of the air source pressure is as low as 0.005Mpa to make the cylinder piston move, and the output force of 0.01N can be precisely controlled. When the film tension changes slightly by 0.01N, the piston of the cylinder can move to make the rotating arm rotate, and the angle encoder detects the rotation of the rotating arm to adjust the reel motor speed in time to make the winding operation more stable.
所述气缸的进气端安装有调压阀,以调节气缸压力。初始状态调节浮动辊的平衡位置时,可以调节配重块,也可以调节气缸压力、即转臂受到的气缸推力,使浮动辊达到所需平衡位置。A pressure regulating valve is installed at the intake end of the cylinder to regulate the pressure of the cylinder. When adjusting the balance position of the floating roller in the initial state, the balance weight can be adjusted, and the cylinder pressure, that is, the cylinder thrust received by the rotating arm, can be adjusted to make the floating roller reach the required balance position.
为便于操作和控制,所述调压阀为电气比例阀,电气比例阀的控制信号线与卷筒传动电机控制机构连接。通过改变控制此阀的电流值或电压值,使气缸进气压力相应发生变化,实现气缸压力的无级调节,实现远程控制和程序控制。For the convenience of operation and control, the pressure regulating valve is an electric proportional valve, and the control signal line of the electric proportional valve is connected with the reel drive motor control mechanism. By changing the current value or voltage value of the control valve, the intake pressure of the cylinder changes accordingly, realizing the stepless adjustment of the cylinder pressure, realizing remote control and program control.
2个转臂与气缸活塞杆铰接,气缸可绕活塞杆顶端连接点转动,缸筒尾部与气缸座铰接,气缸座固定于墙板,缸筒可沿气缸座转动。The two pivoting arms are hinged to the piston rod of the cylinder, the cylinder can rotate around the connection point at the top of the piston rod, the tail of the cylinder barrel is hinged to the cylinder seat, the cylinder seat is fixed on the wallboard, and the cylinder barrel can rotate along the cylinder seat.
以浮动辊中心线至旋转杆中心线的距离为L,转臂上气缸活塞杆连接点与旋转杆中心线的距离为1/2L至2/3L,配重块中心和旋转杆中心的距离为2/5L至6/5L。Taking the distance from the centerline of the floating roller to the centerline of the rotating rod as L, the distance between the connecting point of the cylinder piston rod on the rotating arm and the centerline of the rotating rod is 1/2L to 2/3L, and the distance between the center of the counterweight and the center of the rotating rod is 2/5L to 6/5L.
配重块为不同重量的1~6个,便于初始状态调节时选择使用。There are 1 to 6 counterweights of different weights, which are convenient for selection and use when adjusting the initial state.
转臂远端有沿转臂纵向的凹槽,螺栓经凹槽连接转臂与配重块,用此凹槽可调节配重块中心与旋转杆的距离,即调节配重块的力臂,用于在初始状态调节配重块使浮动辊处于设定的平衡位置,又可防止配重块从转臂上意外脱落。There is a groove along the longitudinal direction of the rotating arm at the far end of the rotating arm. The bolt connects the rotating arm and the counterweight through the groove. The distance between the center of the counterweight and the rotating rod can be adjusted by using this groove, that is, the moment arm of the counterweight can be adjusted. It is used to adjust the counterweight in the initial state so that the floating roller is in the set balance position, and it can also prevent the counterweight from falling off the rotating arm accidentally.
所述卷筒电机控制机构包括可编程逻辑控制器(PLC)和调速器,角度编码器的信号接入可编程逻辑控制器的输入端,可编程逻辑控制器的输出接入调速器,调速器连接卷筒电机。PLC对角度信号进行处理,与原平衡点角度电压信号相比较,得出偏差值,经积分运算后,得到卷筒电机转速调整值,PLC输出的电机转速调整值接入调速器,调速器调节卷筒电机转速。在整个薄膜被卷筒卷取过程中,随着膜卷直径的增大,浮动辊上下摆动,使角度编码器产生实时反馈信号,卷筒电机转速不断被调整,间接控制卷筒卷取的薄膜张力保持恒定,浮动辊维持在初始状态所调节的平衡位置。The reel motor control mechanism includes a programmable logic controller (PLC) and a governor, the signal of the angle encoder is connected to the input terminal of the programmable logic controller, and the output of the programmable logic controller is connected to the governor, The governor is connected to the reel motor. The PLC processes the angle signal, compares it with the original balance point angle voltage signal, and obtains the deviation value. After the integral operation, the reel motor speed adjustment value is obtained. The motor speed adjustment value output by the PLC is connected to the speed controller to adjust the speed. The controller adjusts the reel motor speed. During the whole process of the film being taken up by the reel, as the diameter of the film reel increases, the floating roller swings up and down, so that the angle encoder generates a real-time feedback signal, and the reel motor speed is constantly adjusted, indirectly controlling the film reeled by the reel. The tension is kept constant, and the dancer roller is maintained at the balance position adjusted by the initial state.
所述卷筒电机为变频电机或伺服电机,相应的调速器为变频器或伺服控制器。The reel motor is a variable frequency motor or a servo motor, and the corresponding governor is a frequency converter or a servo controller.
所述2个转臂之一在浮动辊连接处的上方和下方各有一个限位座,限位座固定于墙板,以限定转臂转动的幅度,保护浮动辊、角度编码器等部件。限位座朝向转臂的面上装有减振垫。One of the two rotating arms has a limit seat above and below the joint of the floating roller, and the limit seat is fixed on the wallboard to limit the rotation range of the rotating arm and protect the floating roller, angle encoder and other components. Vibration-absorbing pads are arranged on the face of the limit seat towards the rotating arm.
与现有技术相比,本发明薄膜生产设备的浮动辊装置的优点为:1、通过改变气缸压力和配重块的重量、位置,适应薄膜张力值可由2N至200N,可用于不同规格的塑料薄膜产品,也可用于印刷行业的纸张卷取,或者纺织行业的布匹卷取;2、采用低摩擦气缸,动作的灵敏度达±0.01N,即薄膜张力值改变为±0.01N时就可以得到调整,保证了膜卷收取平稳,提高了生产效率和薄膜的表面质量;3、初始的浮动辊平衡位置可通过调节气缸压力、配重块重量和位置实现,方便快捷;4、结构简单、安装方便,适合于多种规格薄膜收卷设备使用。Compared with the prior art, the advantages of the floating roller device of the film production equipment of the present invention are: 1. By changing the cylinder pressure and the weight and position of the counterweight, the film tension value can be adapted from 2N to 200N, and can be used for plastics of different specifications. Film products can also be used for paper winding in the printing industry, or cloth winding in the textile industry; 2. Using a low-friction cylinder, the sensitivity of the action can reach ±0.01N, that is, the film tension value can be adjusted when it changes to ±0.01N , which ensures the stable collection of the film roll, improves the production efficiency and the surface quality of the film; 3. The initial balance position of the floating roller can be realized by adjusting the cylinder pressure, weight and position of the counterweight, which is convenient and quick; 4. Simple structure and easy installation , suitable for various specifications of film winding equipment.
附图说明Description of drawings
图1为本薄膜生产设备的浮动辊装置实施例结构示意图;Fig. 1 is the structural representation of the embodiment of the floating roller device of this film production equipment;
图2为图1的侧视图Figure 2 is a side view of Figure 1
1、角度编码器,11、防护罩,2、弹性联轴器,3、配重块,4、转臂,5、旋转杆,6、气缸,61、活塞杆,62、缸筒,63、气缸座,7、浮动辊,71、芯轴,8、限位座,9、墙板,10、薄膜。1. Angle encoder, 11. Protective cover, 2. Elastic coupling, 3. Counterweight, 4. Rotating arm, 5. Rotating rod, 6. Cylinder, 61. Piston rod, 62. Cylinder, 63. Cylinder seat, 7, floating roller, 71, mandrel, 8, limit seat, 9, wallboard, 10, film.
具体实施方式Detailed ways
本薄膜生产设备的浮动辊装置实施例如图1和2所示,浮动辊7为空心辊筒,浮动辊两端各嵌有一个滚动轴承,轴承通过孔用卡圈固定在浮动辊两端,芯轴71上有台阶,穿过轴承内孔通过轴用卡圈与辊筒固定为一体,芯轴71的两端固定于左、右转臂4相应的孔内。浮动辊7低于导向辊,薄膜10从前导向辊向下,绕过浮动辊7下方,再向上经后导向辊卷取到卷筒上、形成膜卷。The embodiment of the floating roller device of this film production equipment is shown in Figures 1 and 2. The floating
旋转杆5两端有台阶,旋转杆5左端穿过左侧的转臂4相对的孔并与左侧转臂4固定连接;旋转杆5右端穿过右侧的转臂4相应的孔并与右侧转臂4固定连接;旋转杆两端再通过轴承座和轴承安装在两侧的墙板9上。浮动辊7通过芯轴71与旋转杆5及左、右转臂4组成一矩形框架,此矩形框架可绕旋转杆5上下摆动。旋转杆5左端穿过墙板9通过弹性联轴器2与角度编码器1相连,角度编码器1固定墙板9上,角度编码器1外装有防护罩11。角度编码器1的信号线与卷筒电机控制机构连接。There are steps at both ends of the
左、右转臂4相对浮动辊7的远端侧面开有沿转臂4纵向的凹槽,配重块3穿在转臂4上通过螺栓固定于转臂凹槽,配重块3在转臂4上可纵向移动、调节配重块3中心与旋转杆5的距离。本例有3个不同重量的配重块供选用。Left and right pivoting
本例左侧的转臂4在与浮动辊的连接处的上方和下方各有一个限位座8,限位座8固定于墙板9。限位座8朝向转臂4的面上装有减振垫。The
左、右转臂4的中部各与一个气缸6的活塞杆61相铰接。所述气缸6为低摩擦气缸。如图2所示,气缸活塞杆61可沿连接点转动。低摩擦气缸6的缸筒62尾部与气缸座铰接,气缸座63固定于墙板9,缸筒可沿气缸座转动。The middle part of left and
所述气缸6的进气端安装有电气比例阀。电气比例阀的控制信号线与卷筒电机控制机构连接。The intake end of the
本例以浮动辊7中心线至旋转杆5中心线的距离为L,转臂4上气缸活塞杆61连接点与旋转杆5中心线的距离为1/2L,配重块中心和旋转杆中心的距离为L。In this example, the distance from the centerline of the floating
所述卷筒电机控制机构包括可编程逻辑控制器(PLC)和调速器,角度编码器的信号接入可编程逻辑控制器的输入端,可编程逻辑控制器的输出接入调速器,调速器连接卷筒电机。本例卷筒电机为变频电机,调速器为变频器。The reel motor control mechanism includes a programmable logic controller (PLC) and a governor, the signal of the angle encoder is connected to the input terminal of the programmable logic controller, and the output of the programmable logic controller is connected to the governor, The governor is connected to the reel motor. In this example, the reel motor is a variable frequency motor, and the governor is a frequency converter.
初始状态,调节气缸6的电气比例阀、配重块3,使薄膜10作用在浮动辊7上的拉力、浮动辊7的重力、气缸6的推力及配重块3的重力相平衡,浮动辊7处于平衡位置。随着膜卷直径的加大,薄膜10的线速度增大,作用于薄膜10的拉力增大,浮动辊7向上摆动。浮动辊7向上摆动带动两侧转臂4转动,旋转杆5带动角度编码器1同步旋转,角度编码器1测得转动角度信号送至卷筒电机控制机构调节卷筒电机速度,卷筒电机的转速下降,薄膜10的张力恢复到给定值,浮动辊7又回到原来的平衡位置。In the initial state, adjust the electric proportional valve of the
在薄膜生产线的收卷段应用本例浮动辊装置,在薄膜卷取过程中卷筒速度不断根据薄膜张力调整,膜卷卷取过程平稳,且膜卷表面平顺、两端平齐,薄膜质量得到保证。且在生产薄膜品种改变时,本装置可方便地调节适应不同薄膜的张力。The floating roller device of this example is applied in the winding section of the film production line. During the film winding process, the speed of the reel is constantly adjusted according to the film tension. ensure. And when the variety of the film to be produced changes, the device can conveniently adjust and adapt to the tension of different films.
上述实施例,仅为对本发明的目的、技术方案和有益效果进一步详细说明的具体个例,本发明并非限定于此。凡在本发明的公开的范围之内所做的任何修改、等同替换、改进等,均包含在本发明的保护范围之内。The above-mentioned embodiments are only specific examples for further specifying the purpose, technical solutions and beneficial effects of the present invention, and the present invention is not limited thereto. Any modifications, equivalent replacements, improvements, etc. made within the disclosed scope of the present invention are included in the protection scope of the present invention.
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Denomination of invention: Floating roller device for thin film production equipment Effective date of registration: 20231102 Granted publication date: 20160608 Pledgee: Guoji Finance Co.,Ltd. Pledgor: GUILIN ELECTRICAL EQUIPMENT SCIENTIFIC RESEARCH INSTITUTE Co.,Ltd. Registration number: Y2023980063869 |