CN214872498U - Injection molding machine motor test system - Google Patents
Injection molding machine motor test system Download PDFInfo
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- CN214872498U CN214872498U CN202120597968.2U CN202120597968U CN214872498U CN 214872498 U CN214872498 U CN 214872498U CN 202120597968 U CN202120597968 U CN 202120597968U CN 214872498 U CN214872498 U CN 214872498U
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Abstract
The application provides an injection molding machine motor test system, relates to the field of mechanical manufacturing, and achieves the purpose of saving the time and cost for testing the injection molding machine motor. This injection molding machine motor test system includes: the injection molding machine comprises a base, and a mounting device, a power device, a testing device and an electric control device which are arranged on the base, wherein the mounting device is used for mounting a motor of the injection molding machine; the power device is connected with the motor of the injection molding machine and provides power for the motor of the injection molding machine; the testing device is connected with the injection molding machine motor to test the injection molding machine motor, and comprises a pressure response following testing component which is used for testing the pressure response performance and the pressure following performance of an oil pump port of the injection molding machine motor; the electric control device is connected with the testing device and used for controlling the testing device to test the motor of the injection molding machine.
Description
Technical Field
The application relates to the field of machine manufacturing, in particular to a motor testing system of an injection molding machine.
Background
An injection molding machine, also known as an injection molding machine or an injection machine, can melt plastic into colloid, and apply high pressure to the colloid to enable the colloid to be ejected out of the injection molding machine to fill a mold cavity so as to obtain a plastic product with a certain shape. The injection molding machine motor provides power for the operation of the injection molding machine, and the injection molding machine motor needs to be tested before the injection molding machine is put into use.
The existing injection molding machine motor testing method is that an injection molding machine motor is usually installed on an injection molding machine, and the injection molding machine is operated to test the injection molding machine motor, however, the manufacturing of other parts in the injection molding machine except the injection molding machine motor needs a certain time, and the manufacturing of the injection molding machine complete machine only for testing the injection molding machine motor consumes a long time and has high cost.
SUMMERY OF THE UTILITY MODEL
One purpose of this application is to solve the problem of injection molding machine motor test consuming time long, with high costs among the prior art.
In order to solve the above problems, the present application provides an injection molding machine motor test system, which includes: a base; the mounting device is arranged on the base and used for mounting a motor of the injection molding machine; the power device is arranged on the base, is connected with the injection molding machine motor and provides power for the injection molding machine motor; the testing device is arranged on the base and connected with the injection molding machine motor to test the injection molding machine motor, and comprises a pressure response following testing component which is used for testing the pressure response performance and the pressure following performance of an oil pump port of the injection molding machine motor; and the electric control device is arranged on the base, is connected with the testing device and is used for controlling the testing device to test the motor of the injection molding machine.
In one embodiment of the present application, the pressure response following test assembly comprises: the first pressure acquisition part is arranged in an oil pump control loop of the injection molding machine motor and is used for acquiring the pressure at an oil outlet of the oil pump; and the pressure analysis piece is connected with the first pressure acquisition piece and used for receiving the pressure at the oil outlet of the oil pump so as to analyze the pressure response performance and the pressure following performance at the oil outlet of the oil pump.
In one embodiment of the present application, the test apparatus further comprises: a rotational speed testing assembly, the rotational speed testing assembly comprising: the first rotary encoder is arranged at the output shaft of the motor of the injection molding machine and used for generating a first rotary encoder signal based on the rotation of the output shaft; and the rotating speed analysis piece is connected with the first rotary encoder and is used for receiving the first rotary encoder signal so as to analyze the rotating speed of the motor of the injection molding machine based on the first rotary encoder signal.
In one embodiment of the present application, the test apparatus further comprises: a rotational speed response following test assembly comprising: the second rotary encoder is arranged at the output shaft of the motor of the injection molding machine and used for generating a second rotary encoder signal based on the rotation of the output shaft; and the rotating speed response following analysis piece is connected with the second rotary encoder and is used for receiving the second rotary encoder signal so as to analyze the rotating speed response performance and the rotating speed following performance of the motor of the injection molding machine based on the second rotary encoder signal.
In one embodiment of the present application, the testing apparatus further includes: a torque testing assembly, the torque testing assembly comprising: the first current collecting piece is arranged between the power device and the injection molding machine motor and is used for collecting the current value of a main power supply of the injection molding machine motor; and the torque analysis piece is connected with the first current acquisition piece and is used for receiving the current value of the main power supply of the injection molding machine so as to analyze the torque performance of the motor of the injection molding machine based on the current value of the main power supply of the injection molding machine.
In one embodiment of the present application, the test apparatus further comprises: an overload testing assembly, the overload testing assembly comprising: the first proportional pressure overflow valve is arranged in an oil pump control loop of the injection molding machine motor and used for adjusting the pressure of an oil outlet of the oil pump; the third pressure acquisition part is arranged in an oil pump control loop of the injection molding machine motor and is used for acquiring the pressure at an oil outlet of the oil pump; the third rotary encoder is arranged at the output shaft of the injection molding machine motor and used for generating a third rotary encoder signal based on the rotation of the output shaft; the second current collecting piece is arranged between the power device and the injection molding machine motor and is used for collecting the current value of the main power supply of the injection molding machine; and the overload analysis piece is connected with the third pressure acquisition piece, the third rotary encoder and the second current acquisition piece, and is used for analyzing the overload performance of the motor of the injection molding machine based on the pressure at the oil outlet of the oil pump, the signal of the third rotary encoder and the current value of the main power supply of the injection molding machine.
In one embodiment of the present application, the test apparatus further comprises: a fatigue testing assembly, the fatigue testing assembly comprising: the current adjusting piece is arranged between the power device and the injection molding machine motor and is used for adjusting the current value of the main power supply of the injection molding machine; the fourth pressure acquisition part is arranged in an oil pump control loop of the injection molding machine motor and is used for acquiring the pressure at an oil outlet of the oil pump; the fourth rotary encoder is arranged at the output shaft of the motor of the injection molding machine and used for generating a fourth rotary encoder signal based on the rotation of the output shaft; the third current collecting piece is arranged between the power device and the injection molding machine motor and is used for collecting the current value of the main power supply of the injection molding machine; the first voltage acquisition part is arranged between the power device and the injection molding machine motor and is used for acquiring a voltage value of a main power supply of the injection molding machine; and the fatigue resistance analysis part is connected with the fourth pressure acquisition part, the fourth rotary encoder, the third current acquisition part and the first voltage acquisition part so as to analyze the fatigue resistance of the motor of the injection molding machine based on the pressure at the oil outlet of the oil pump, the signal of the fourth rotary encoder, the current value of the main power supply of the injection molding machine and the voltage value of the main power supply of the injection molding machine.
In one embodiment of the present application, the test apparatus further comprises: a positioning accuracy testing assembly, the positioning accuracy testing assembly comprising: the position sensor is arranged on an oil cylinder of the motor of the injection molding machine and used for collecting position information of a piston head in the oil cylinder; and the positioning analysis piece is connected with the position sensor and is used for receiving the position information of the piston head so as to analyze the positioning precision of the injection molding machine.
In one embodiment of the present application, the test apparatus further comprises: simulated condition test assembly, simulated condition test assembly includes: the working condition simulation piece is connected with an oil cylinder, a hydraulic motor and/or a second proportional pressure overflow valve of the injection molding machine motor and used for simulating the working condition of the injection molding machine motor by controlling the oil cylinder, the hydraulic motor and/or the second proportional pressure overflow valve, wherein the second proportional pressure overflow valve is arranged in an oil pump control loop of the injection molding machine motor; the fifth rotary encoder is arranged on an output shaft of the injection molding machine motor and used for generating a fifth rotary encoder signal based on the rotation of the output shaft; the fourth current collecting piece is arranged between the power device and the injection molding machine motor and is used for collecting the current value of a main power supply of the injection molding machine motor; and the working condition analysis piece is connected with the fifth rotary encoder and the fourth current acquisition piece so as to analyze the working performance of the injection molding machine motor under the working condition based on the signal of the fifth rotary encoder and the current value of the main power supply of the injection molding machine motor.
In one embodiment of the present application, the test apparatus further comprises: a power consumption testing component, the power consumption testing component comprising: the fifth current collecting piece is arranged between the power device and the injection molding machine motor and is used for collecting the current value of the main power supply of the injection molding machine; the second voltage acquisition part is arranged between the power device and the injection molding machine motor and is used for acquiring the voltage value of the main power supply of the injection molding machine; and the power consumption analyzing piece is connected with the fifth current collecting piece and the second voltage collecting piece so as to analyze the power consumption of the motor of the injection molding machine based on the current value of the main power supply of the injection molding machine and the voltage value of the main power supply of the injection molding machine.
According to the technical scheme, the method has at least the following advantages and positive effects:
the test system for the motor of the injection molding machine comprises a base, and an installation device, a power device, a test device and an electric control device which are arranged on the base, wherein the installation device is used for installing the motor of the injection molding machine; the power device is connected with the motor of the injection molding machine and provides power for the motor of the injection molding machine; the testing device is connected with the injection molding machine motor to test the injection molding machine motor, and comprises a pressure response following testing component which is used for testing the pressure response performance and the pressure following performance of an oil pump port of the injection molding machine motor; the electric control device is connected with the testing device and used for controlling the testing device to test the motor of the injection molding machine, so that the motor of the injection molding machine can be tested without manufacturing the injection molding machine, and the time and the cost for producing other parts except the motor of the injection molding machine in the injection molding machine are saved.
Drawings
FIG. 1 is a schematic structural diagram of a motor testing system of an injection molding machine provided in an embodiment of the present application;
FIG. 2 schematically illustrates a pressure response following curve obtained by testing an injection molding machine motor by using the injection molding machine motor testing system provided by the embodiment of the application;
fig. 3 schematically illustrates a rotation speed curve and a torque curve obtained by testing an injection molding machine motor by using the injection molding machine motor testing system provided by the embodiment of the present application;
two curves in fig. 4 respectively show a set speed curve and an actual speed curve of the injection molding machine motor; FIG. 5 schematically shows an overload test curve obtained by testing an injection molding machine motor by using the injection molding machine motor testing system provided by the embodiment of the application;
FIG. 6A is a schematic diagram illustrating a fatigue resistance test curve obtained by testing an injection molding machine motor by using the injection molding machine motor testing system provided by the embodiment of the application;
FIG. 6B is a schematic diagram illustrating fatigue parameters obtained by the injection molding machine motor testing system provided by the embodiment of the present application when testing an injection molding machine motor;
fig. 7 schematically illustrates a positioning accuracy curve obtained by testing an injection molding machine motor by using the injection molding machine motor testing system provided in the embodiment of the present application;
FIG. 8 schematically shows a simulated condition test curve obtained by testing an injection molding machine motor by using the injection molding machine motor test system provided by the embodiment of the application;
fig. 9 schematically shows a power consumption test curve obtained by testing the motor of the injection molding machine by using the injection molding machine motor test system provided by the embodiment of the application.
The reference numerals are explained below:
101. the device comprises a base 102, a mounting device 103, a power device 104, a testing device 105, an electric control device 200 and an injection molding machine motor.
Detailed Description
Exemplary embodiments that embody features and advantages of the present application will be described in detail in the following description. It is to be understood that the present application is capable of various modifications in various embodiments without departing from the scope of the application, and that the description and drawings are to be taken as illustrative and not restrictive in character.
The injection molding machine motor testing system provided by the embodiment comprises a base 101, and a mounting device 102, a power device 103, a testing device 104 and an electric control device 105 which are arranged on the base 101, wherein as shown in fig. 1, the mounting device 102 is used for mounting an injection molding machine motor 200; the power device 103 is connected with the injection molding machine motor 200 and provides power for the injection molding machine motor 200; the testing device 104 is connected with the injection molding machine motor 200 to test the injection molding machine motor 200, and the testing device 104 comprises a pressure response following testing component which is used for testing the pressure response performance and the pressure following performance of an oil pump port of the injection molding machine motor 200; the electric control device 105 is connected with the testing device 104 and used for controlling the testing device 104 to test the injection molding machine motor 200, so that the injection molding machine motor 200 can be tested without manufacturing the injection molding machine, and the time and the cost for producing other parts except the injection molding machine motor 200 in the injection molding machine are saved.
In one embodiment of the present application, the base 101 may be a plate-like or frame-like structure, and the shape of the base 101 is not limited herein.
In other embodiments of the present application, the base 101 may be replaced by the mounting device 102, the power device 103, the testing device 104 or the electronic control device 105, and the mounting device 102, the power device 103 and the electronic control device 105 may be mounted on the testing device 104.
In an embodiment of the present application, the mounting device 102 may be detachably disposed on the base 101, the mounting device 102 may have a plurality of models, the mounting devices 102 of the plurality of models are used to cooperate with the injection molding machine motors 200 of the plurality of models, thereby enabling the injection molding machine motor testing system of the present application to test the injection molding machine motors 200 of the plurality of models, compare with installing the injection molding machine motors 200 on an injection molding machine for testing, the step of producing injection molding machines of the plurality of models is removed, time and cost are further saved, and the difference in testing of the injection molding machine motors 200 caused by the difference of the injection molding machines is also avoided.
In one embodiment of the present application, the mounting device 102 may include a slidably coupled mounting seat and a mounting bracket, the mounting bracket may be slidably coupled to the mounting seat, the mounting bracket is used to connect the injection molding machine motor 200, and the mounting bracket drives the injection molding machine motor 200 to slide on the mounting seat, so that the injection molding machine motor 200 can be better connected to the testing device 104. Specifically, the injection molding machine motor 200 and the testing device 104 can be connected through a load besides being electrically connected with the testing component, the testing device 104 tests the injection molding machine motor 200 through controlling the load, and the mutually sliding mounting frame and the mounting seat can facilitate the connection of the injection molding machine motor 200 with the load. The load may be a hydraulic pipe, and the connection process may include: the injection molding machine motor 200 is slid in a direction away from the load, the mounting bracket is slid again to align the connection port of the injection molding machine motor 200 and the hydraulic pipe with the hydraulic pipe, and the injection molding machine motor 200 is slid in a direction close to the hydraulic pipe to install the injection molding machine motor 200 on the hydraulic pipe.
In this embodiment, the sliding connection may be implemented by a slide rail, and the load between the injection molding machine motor 200 and the testing device 104 may be set according to the type of the injection molding machine motor 200 and the testing requirements, and when the injection molding machine motor 200 is a liquid oil pump motor, the load may be an oil pipe.
In one embodiment of the present application, the number of the mounting devices 102 may be multiple, and the plurality of injection molding machine motors 200 may be tested simultaneously or separately, and the plurality of injection molding machine motors 200 may be matched with each other to realize a master-slave matching test.
In other embodiments of the present application, the mounting device 102 may also be a mounting block, and the mounting device 102 may be adapted to the structure of the injection molding machine motor 200 corresponding thereto, and the structure of the mounting device 102 is not limited herein.
In one embodiment of the present application, the power device 103 may be a power distribution cabinet or other device capable of providing power to the motor 200 of the injection molding machine, and the power device 103 may be electrically or mechanically connected to the motor 200 of the injection molding machine.
In other embodiments of the present application, the electronic control device 105 may be electrically connected to the testing device 104, and the electronic control device 105 may be an electronic control testing platform. The electronic control testing platform may have buttons and a control screen, and a tester may control the testing device 104 through the electronic control testing platform.
In one embodiment of the present application, the pressure response following test component on the test device 104 may include a first pressure acquisition part and a pressure analysis part connected to each other, the first pressure acquisition part being disposed in an oil pump control circuit of the injection molding machine motor 200 for acquiring the pressure at the oil outlet of the oil pump; the pressure analysis piece is used for receiving the pressure at the oil outlet of the oil pump so as to analyze the pressure response performance and the pressure following performance of the oil outlet of the oil pump.
In this embodiment, the first pressure acquisition part can be a pressure sensor, the pressure analysis part can be an upper computer connected with the pressure sensor, the pressure sensor measures a test pressure value at the outlet of the oil pump and then sends the test pressure value to the upper computer, and the upper computer compares the test pressure value with a set pressure value to obtain the pressure response performance and the pressure following performance at the outlet of the oil pump.
In this embodiment, the injection molding machine motor 200 includes a servo motor and an oil pump driven by the servo motor, and the pressure response performance refers to the time required for the power device 103 to drive the injection molding machine motor 200 to work, and the acceleration control level of the pressure at the oil pump port of the injection molding machine motor 200 refers to the time required for pressure loading by a proportional relief valve arranged on a hydraulic test loop after a pressure instruction is acquired and the actual pressure generated in the injection molding machine motor 200 is subjected to pressure feedback through a pressure sensor to reach a set pressure value; the pressure following test mainly refers to the performance of the control stability of the pressure when a certain pressure state is reached, namely, after the pressure of an oil pump port reaches a set pressure value and the pressure is kept stable, the peak fluctuation condition of the actual pressure is expressed by the difference value of the maximum fluctuation pressure and the minimum fluctuation pressure, and the pressure response performance and the pressure following performance are very important indexes in the torque control of the injection molding machine motor 200. The pressure response performance and the pressure following performance can be tested simultaneously or separately. Fig. 2 schematically shows a pressure response following curve obtained by testing the injection molding machine motor 200 by the injection molding machine motor testing system provided in the embodiment of the present application, and two curves in fig. 2 respectively show a set pressure curve and an actual pressure curve of the injection molding machine motor 200, where it can be seen that the set pressure curve and the actual pressure curve are substantially overlapped, indicating that both the pressure response performance and the pressure following performance of the injection molding machine motor 200 are good.
In an embodiment of the present application, the testing device 104 may further include a torque testing component, and the torque testing component may include a first current collecting part and a torque analyzing part, the first current collecting part is disposed between the power device 103 and the injection molding machine motor 200, and is configured to collect a current value of a main power supply of the injection molding machine motor 200; the torque analysis part is connected with the first current acquisition part and used for receiving the current value of the main power supply of the injection molding machine so as to analyze the torque performance of the motor 200 of the injection molding machine based on the current value of the main power supply of the injection molding machine. Specifically, the output torque of the injection molding machine motor 200 can be calculated based on the current value of the main power supply in combination with the torque constant of the injection molding machine motor 200. Wherein, the torque analysis piece can be the host computer.
In one embodiment of the present application, the testing device 104 may further include a rotational speed testing component, which may include a first rotary encoder and a rotational speed analyzing component connected to each other, the first rotary encoder being disposed at an output shaft of the injection molding machine motor 200 for generating a first rotary encoder signal based on rotation of the output shaft; the rotating speed analysis piece is connected with the first rotary encoder and used for receiving a first rotary encoder signal so as to analyze the rotating speed of the motor 200 of the injection molding machine based on the first rotary encoder signal. Specifically, the rotation speed of the injection molding machine motor 200 can be obtained by analog operation conversion based on the first rotary encoder signal. Wherein, the rotational speed analysis piece can be the host computer.
In the above embodiments, the rotation speed performance and the torque performance belong to the servo motor characteristics, which are also referred to as motor stiffness. The method is characterized in that the injection molding machine motor 200 is selected, two parameters of the torque and the rotating speed of the injection molding machine motor 200 are fed back to the upper position, the working condition curve of the torque and the rotating speed of the servo motor is analyzed and synthesized through a computer, and visual analysis is carried out, and reference is made to fig. 3. Fig. 3 schematically shows a rotation speed curve and a torque curve obtained by testing the injection molding machine motor 200 by the injection molding machine motor testing system provided by the embodiment of the present application, and two curves in fig. 3 respectively represent the rotation speed curve and the torque curve of the injection molding machine motor 200, wherein neither the rotation speed curve nor the torque curve has an overshoot phenomenon, and is very smooth.
In one embodiment of the present application, the testing device 104 may further include a rotational speed response following testing component, which may include a second rotary encoder and a rotational speed response following analyzing component, the second rotary encoder may be disposed at the output shaft of the injection molding machine motor 200 for generating a second rotary encoder signal based on the rotation of the output shaft; the rotational speed response following analysis component can be connected with the second rotary encoder and used for receiving a second rotary encoder signal so as to analyze the rotational speed response performance and the rotational speed following performance of the injection molding machine motor 200 based on the second rotary encoder signal. Wherein, the rotating speed response following analysis piece can be an upper computer.
In this embodiment, the speed response performance instructs the power device 103 on the acceleration control performance of the injection molding machine motor 200 and the load, after the acquisition instruction is issued, the upper computer acquires the rotary encoder signal of the injection molding machine motor 200 to obtain the actual speed of the injection molding machine motor 200, and the time required when the actual speed reaches the set speed value indicates the speed response performance of the injection molding machine motor 200; the speed following test mainly refers to the performance of the speed stability of the injection molding machine motor 200 in a constant speed state, that is, after the actual speed of the injection molding machine motor 200 reaches a set speed value and keeps a steady speed, the peak fluctuation condition of the actual speed is expressed by the difference between the maximum speed and the minimum speed. The speed response performance and the speed following performance are very important indexes for controlling the speed of the motor. The speed response and speed follow may be tested separately or simultaneously. The two curves in fig. 4 represent the set speed curve and the actual speed curve of the injection molding machine motor 200, respectively, wherein it can be seen that the set speed curve and the actual speed curve substantially coincide, indicating that the speed response performance and the speed following performance of the injection molding machine motor 200 are both good.
In an embodiment of the present application, the testing device 104 may further include an overload testing component, which may include a first proportional pressure relief valve, disposed in an oil pump control loop of the injection molding machine motor 200, for adjusting the oil outlet pressure of the oil pump; the third pressure acquisition part is arranged in an oil pump control loop of the injection molding machine motor 200 and is used for acquiring the pressure at an oil outlet of the oil pump; a third rotary encoder provided at an output shaft of the injection molding machine motor 200 for generating a third rotary encoder signal based on rotation of the output shaft; the second current collecting piece is arranged between the power device 103 and the injection molding machine motor 200 and is used for collecting the current value of the main power supply of the injection molding machine; and the overload analysis part is connected with the third pressure acquisition part, the third rotary encoder and the second current acquisition part, and analyzes the overload performance of the motor 200 of the injection molding machine based on the pressure at the oil outlet of the oil pump, the signal of the third rotary encoder and the current value of the main power supply of the injection molding machine. Wherein, overload analysis piece can be the host computer.
In this embodiment, the first proportional pressure relief valve may be a pilot-operated proportional pressure relief valve, the first proportional pressure relief valve controls the hydraulic pressure in the hydraulic test loop of the injection molding machine motor 200 to realize external loading and continuously increase the load, so as to test the maximum overload performance of the injection molding machine motor 200 under several conditions, the overload test component may test the overload capacity of the injection molding machine motor 200 under different conditions, and specifically, the overload test includes three performance indexes of torque overload, locked rotor overload, and rotational speed overload. The torque overload means that the torque of the motor 200 of the injection molding machine is changed in an external loading mode under the maximum rated speed state, and the torque overload capacity of the motor 200 of the injection molding machine is tested. The speed overload means that the speed overload capability of the motor 200 of the injection molding machine is tested by changing the speed of the motor 200 of the injection molding machine under the maximum rated load. The locked-rotor overload is a performance test of the maximum power performance of the motor 200 of the injection molding machine when the maximum rated speed and the torque are exceeded. Fig. 5 schematically shows an overload test curve obtained by testing the injection molding machine motor 200 by the injection molding machine motor test system provided in the embodiment of the present application, the upper curve in fig. 5 is a pressure curve of the injection molding machine motor 200, and it can be seen that an actual pressure curve of the injection molding machine motor 200 substantially coincides with a set pressure curve; the upper curve in fig. 5 is the pressure curve of the injection molding machine motor 200, and the actual speed curve of the injection molding machine motor 200 substantially coincides with the set speed curve.
In one embodiment of the present application, the testing device 104 may further include a fatigue testing component, which may include: the current adjusting piece is arranged between the power device 103 and the injection molding machine motor 200 and is used for adjusting the current value of the main power supply of the injection molding machine; the fourth pressure acquisition part is arranged in an oil pump control loop of the injection molding machine motor 200 and is used for acquiring the pressure at an oil outlet of the oil pump; a fourth rotary encoder provided at an output shaft of the injection molding machine motor 200 for generating a fourth rotary encoder signal based on rotation of the output shaft; the third current collecting piece is arranged between the power device 103 and the injection molding machine motor 200 and is used for collecting the current value of the main power supply of the injection molding machine; the first voltage acquisition part is arranged between the power device 103 and the injection molding machine motor 200 and is used for acquiring the voltage value of the main power supply of the injection molding machine; and the fatigue resistance analysis part is connected with the fourth pressure acquisition part, the fourth rotary encoder, the third current acquisition part and the first voltage acquisition part so as to analyze the fatigue resistance of the injection molding machine motor 200 based on the pressure at the oil outlet of the oil pump, a signal of the fourth rotary encoder, the current value of the main power supply of the injection molding machine and the voltage value of the main power supply of the injection molding machine. Wherein, the anti-fatigue analysis piece can be an upper computer.
In this embodiment, the fatigue resistance test mainly tests the long-period cycle performance of the injection molding machine motor 200 under a certain duty cycle. The fatigue resistance test can be set to be in a high-power state, an intermittent state, a low-power state and an intermittent state, and the cycle test is carried out in four action cycles. Different working conditions and time can be set for the four action states. The computer can set the maximum total cycle time, namely the total cycle time can be set according to the required simulation fatigue times. The fatigue resistance test can select the fatigue state of the motor 200 of the test injection molding machine, and the fatigue condition of key parts such as an oil pump, a screw rod and the like of the injection molding machine can be tested through the fatigue resistance test component. Fig. 6A schematically illustrates a fatigue test curve obtained by testing the injection molding machine motor 200 by the injection molding machine motor testing system provided in the embodiment of the present application, wherein a speed curve and a pressure curve of the injection molding machine motor 200 in a cycle are shown. Fig. 6B schematically shows fatigue resistance parameters obtained by testing the motor 200 of the injection molding machine by using the motor testing system of the injection molding machine provided by the embodiment of the present application.
In one embodiment of the present application, the testing device 104 may further include a positioning accuracy testing component, which may include: the position sensor is arranged on an oil cylinder of the motor 200 of the injection molding machine and is used for collecting position information of a piston head in the oil cylinder; and the positioning analysis piece is connected with the position sensor and is used for receiving the position information of the piston head so as to analyze the positioning precision of the injection molding machine. Wherein, the positioning analysis piece can be an upper computer.
In this embodiment, the motor 200 of the injection molding machine may be configured as a servo motor driving an oil pump, which is connected to a hydraulic control circuit via a hydraulic line to control the movement of the hydraulic cylinder. The positioning precision testing assembly is used for testing two aspects of linear operation of the oil cylinder and linear operation of the servo motor driving screw rod. The main test is that the speed reduction control performance of the servo motor is tested, the servo motor runs at a certain set speed, and the oil cylinder or the screw rod is rapidly decelerated and positioned after reaching a certain position. The automatic reciprocating circular test is controlled by a computer, the actual position of the deceleration stop is recorded at the set position, a report curve is generated, and referring to fig. 7, fig. 7 schematically shows a positioning accuracy curve obtained by testing the injection molding machine motor 200 by the injection molding machine motor test system provided by the embodiment of the application, wherein the set position curve is basically overlapped with the actual position curve.
In one embodiment of the present application, the testing device 104 may further include a simulated condition testing component, and the simulated condition testing component may include: the working condition simulation piece is connected with an oil cylinder, a hydraulic motor and/or a second proportional pressure overflow valve of the injection molding machine motor 200 and used for simulating the working condition of the injection molding machine motor 200 by controlling the oil cylinder, the hydraulic motor and/or the second proportional pressure overflow valve, wherein the second proportional pressure overflow valve is arranged in an oil pump control loop of the injection molding machine motor 200; a fifth rotary encoder provided at an output shaft of the injection molding machine motor 200 for generating a fifth rotary encoder signal based on rotation of the output shaft; the fourth current collecting piece is arranged between the power device 103 and the injection molding machine motor 200 and is used for collecting the current value of a main power supply of the injection molding machine motor 200; and the working condition analysis piece is connected with the fifth rotary encoder and the fourth current acquisition piece so as to analyze the working performance of the injection molding machine motor 200 under the working condition based on the signal of the fifth rotary encoder and the current value of the main power supply of the injection molding machine motor 200.
In the embodiment, due to the working condition characteristics of the injection molding machine, the power load of the injection molding machine is determined to be changeable in the actual action process, and the indexes of the motor such as torque, speed and the like are difficult to directly quantify. The test can select key action working conditions of simulating the injection molding machine, such as mold opening and closing, injection, pressure maintaining, glue melting, cooling and the like, can simulate the working conditions of a user in implementing the injection molding machine, greatly restores the real working conditions, and tests the performance of the injection molding machine motor 200. The mould opening and closing and the injection actions are realized by simulating through controlling the actions of the hydraulic oil cylinder; the pressure maintaining action is realized by simulating a hydraulic oil cylinder and a pressure loading mode; the glue melting action is realized by simulating a hydraulic motor and a pressure loading mode; the cooling action is achieved by duty cycle simulation. Fig. 8 schematically shows simulated condition test curves obtained by testing the injection molding machine motor 200 by the injection molding machine motor test system provided by the embodiment of the application, wherein speed curves and pressure curves of the injection molding machine motor 200 in respective simulated conditions are shown.
In an embodiment of the present application, the testing device 104 may further include a power consumption testing component, and the power consumption testing component may include: the fifth current collecting piece is arranged between the power device 103 and the injection molding machine motor 200 and is used for collecting the current value of the main power supply of the injection molding machine; the second voltage acquisition part is arranged between the power device 103 and the injection molding machine motor 200 and is used for acquiring the voltage value of the main power supply of the injection molding machine; and a power consumption analyzing part connected to the fifth current collecting part and the second voltage collecting part to analyze the power consumption of the injection molding machine motor 200 based on the current value of the injection molding machine main power supply and the voltage value of the injection molding machine main power supply.
In the embodiment, the power consumption test is to collect the current sensor arranged on the main power supply line through the upper computer, and to set the power consumption performance of the injection molding machine motor 200 in a certain period of time under the corresponding working condition in combination with the voltage parameter. The power consumption testing component can test the power consumption under a constant power state and can also test the power consumption under a simulated working condition. Fig. 9 schematically shows a power consumption test curve obtained by testing the injection molding machine motor 200 by the injection molding machine motor test system provided in the embodiment of the present application, wherein power consumption of the injection molding machine motor 200 under different pressures is shown.
In an embodiment of the present application, the first pressure collecting member, the second pressure collecting member, and the third pressure collecting member, that is, the fourth pressure collecting member described in the above embodiments may be the same pressure collecting member, that is, different test assemblies in the test apparatus 104 may share the same pressure collecting member; the first rotary encoder, the second rotary encoder, the third rotary encoder, the fourth rotary encoder, and the fifth rotary encoder may be the same rotary encoder, that is, different test components in the test device 104 may share the same rotary encoder; the first current collecting element, the second current collecting element, the third current collecting element, the fourth current collecting element and the fifth current collecting element may be the same current collecting element, that is, different test assemblies in the test device 104 may share the same current collecting element; the first proportional pressure relief valve and the second proportional pressure relief valve may be the same proportional pressure relief valve, that is, different testing components in the testing device 104 may share the same proportional pressure relief valve; the first voltage acquisition element and the second voltage acquisition element may be the same voltage acquisition element, i.e., different test components in the test device 104 may share the same voltage acquisition element.
The injection molding machine motor test system can completely simulate the use condition of the injection molding machine motor 200 and test and adjust the injection molding machine motor 200. The system can be applied to the systematic test of the whole injection molding machine, is also suitable for testing key parts of an injection molding machine motor 200, a servo motor, an oil pump, a screw rod and the like of the injection molding machine, and is suitable for the traditional hydraulic injection molding machine, an oil-electric hybrid injection molding machine, a pure electric full servo electric injection molding machine and the like.
While the present application has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present application may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.
Claims (10)
1. An injection molding machine motor test system, comprising:
a base;
the mounting device is arranged on the base and used for mounting a motor of the injection molding machine;
the power device is arranged on the base, is connected with the injection molding machine motor and provides power for the injection molding machine motor;
the testing device is arranged on the base and connected with the injection molding machine motor to test the injection molding machine motor, and comprises a pressure response following testing component which is used for testing the pressure response performance and the pressure following performance of an oil pump port of the injection molding machine motor;
and the electric control device is arranged on the base, is connected with the testing device and is used for controlling the testing device to test the motor of the injection molding machine.
2. The injection molding machine motor test system of claim 1, wherein the pressure response follow-up test assembly comprises:
the first pressure acquisition part is arranged in an oil pump control loop of the injection molding machine motor and is used for acquiring the pressure at an oil outlet of the oil pump;
and the pressure analysis piece is connected with the first pressure acquisition piece and used for receiving the pressure at the oil outlet of the oil pump so as to analyze the pressure response performance and the pressure following performance at the oil outlet of the oil pump.
3. The injection molding machine motor test system of claim 1, wherein the test apparatus further comprises: a rotational speed testing assembly, the rotational speed testing assembly comprising:
the first rotary encoder is arranged at the output shaft of the motor of the injection molding machine and used for generating a first rotary encoder signal based on the rotation of the output shaft;
and the rotating speed analysis piece is connected with the first rotary encoder and is used for receiving the first rotary encoder signal so as to analyze the rotating speed of the motor of the injection molding machine based on the first rotary encoder signal.
4. The injection molding machine motor test system of claim 1, wherein the test apparatus further comprises: a rotational speed response following test assembly comprising:
the second rotary encoder is arranged at the output shaft of the motor of the injection molding machine and used for generating a second rotary encoder signal based on the rotation of the output shaft;
and the rotating speed response following analysis piece is connected with the second rotary encoder and is used for receiving the second rotary encoder signal so as to analyze the rotating speed response performance and the rotating speed following performance of the motor of the injection molding machine based on the second rotary encoder signal.
5. The injection molding machine motor test system of claim 1, wherein the test apparatus further comprises: a torque testing assembly, the torque testing assembly comprising:
the first current collecting piece is arranged between the power device and the injection molding machine motor and is used for collecting the current value of a main power supply of the injection molding machine motor;
and the torque analysis piece is connected with the first current acquisition piece and is used for receiving the current value of the main power supply of the injection molding machine so as to analyze the torque performance of the motor of the injection molding machine based on the current value of the main power supply of the injection molding machine.
6. The injection molding machine motor test system of claim 1, wherein the test apparatus further comprises: an overload testing assembly, the overload testing assembly comprising:
the first proportional pressure overflow valve is arranged in an oil pump control loop of the injection molding machine motor and used for adjusting the pressure of an oil outlet of the oil pump;
the third pressure acquisition part is arranged in an oil pump control loop of the injection molding machine motor and is used for acquiring the pressure at an oil outlet of the oil pump;
the third rotary encoder is arranged at the output shaft of the injection molding machine motor and used for generating a third rotary encoder signal based on the rotation of the output shaft;
the second current collecting piece is arranged between the power device and the injection molding machine motor and is used for collecting the current value of the main power supply of the injection molding machine;
and the overload analysis piece is connected with the third pressure acquisition piece, the third rotary encoder and the second current acquisition piece, and is used for analyzing the overload performance of the motor of the injection molding machine based on the pressure at the oil outlet of the oil pump, the signal of the third rotary encoder and the current value of the main power supply of the injection molding machine.
7. The injection molding machine motor test system of claim 1, wherein the test apparatus further comprises: a fatigue testing assembly, the fatigue testing assembly comprising:
the current adjusting piece is arranged between the power device and the injection molding machine motor and is used for adjusting the current value of the main power supply of the injection molding machine;
the fourth pressure acquisition part is arranged in an oil pump control loop of the injection molding machine motor and is used for acquiring the pressure at an oil outlet of the oil pump;
the fourth rotary encoder is arranged at the output shaft of the motor of the injection molding machine and used for generating a fourth rotary encoder signal based on the rotation of the output shaft;
the third current collecting piece is arranged between the power device and the injection molding machine motor and is used for collecting the current value of the main power supply of the injection molding machine;
the first voltage acquisition part is arranged between the power device and the injection molding machine motor and is used for acquiring a voltage value of a main power supply of the injection molding machine;
and the fatigue resistance analysis part is connected with the fourth pressure acquisition part, the fourth rotary encoder, the third current acquisition part and the first voltage acquisition part so as to analyze the fatigue resistance of the motor of the injection molding machine based on the pressure at the oil outlet of the oil pump, the signal of the fourth rotary encoder, the current value of the main power supply of the injection molding machine and the voltage value of the main power supply of the injection molding machine.
8. The injection molding machine motor test system of claim 1, wherein the test apparatus further comprises: a positioning accuracy testing assembly, the positioning accuracy testing assembly comprising:
the position sensor is arranged on an oil cylinder of the motor of the injection molding machine and used for collecting position information of a piston head in the oil cylinder;
and the positioning analysis piece is connected with the position sensor and is used for receiving the position information of the piston head so as to analyze the positioning precision of the injection molding machine.
9. The injection molding machine motor test system of claim 1, wherein the test apparatus further comprises: simulated condition test assembly, simulated condition test assembly includes:
the working condition simulation piece is connected with an oil cylinder, a hydraulic motor and/or a second proportional pressure overflow valve of the injection molding machine motor and used for simulating the working condition of the injection molding machine motor by controlling the oil cylinder, the hydraulic motor and/or the second proportional pressure overflow valve, wherein the second proportional pressure overflow valve is arranged in an oil pump control loop of the injection molding machine motor;
the fifth rotary encoder is arranged on an output shaft of the injection molding machine motor and used for generating a fifth rotary encoder signal based on the rotation of the output shaft;
the fourth current collecting piece is arranged between the power device and the injection molding machine motor and is used for collecting the current value of a main power supply of the injection molding machine motor;
and the working condition analysis piece is connected with the fifth rotary encoder and the fourth current acquisition piece so as to analyze the working performance of the injection molding machine motor under the working condition based on the signal of the fifth rotary encoder and the current value of the main power supply of the injection molding machine motor.
10. The injection molding machine motor test system of claim 1, wherein the test apparatus further comprises: a power consumption testing component, the power consumption testing component comprising:
the fifth current collecting piece is arranged between the power device and the injection molding machine motor and is used for collecting the current value of the main power supply of the injection molding machine;
the second voltage acquisition part is arranged between the power device and the injection molding machine motor and is used for acquiring the voltage value of the main power supply of the injection molding machine;
and the power consumption analyzing piece is connected with the fifth current collecting piece and the second voltage collecting piece so as to analyze the power consumption of the motor of the injection molding machine based on the current value of the main power supply of the injection molding machine and the voltage value of the main power supply of the injection molding machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120597968.2U CN214872498U (en) | 2021-03-24 | 2021-03-24 | Injection molding machine motor test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120597968.2U CN214872498U (en) | 2021-03-24 | 2021-03-24 | Injection molding machine motor test system |
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| Publication Number | Publication Date |
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| CN214872498U true CN214872498U (en) | 2021-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120597968.2U Active CN214872498U (en) | 2021-03-24 | 2021-03-24 | Injection molding machine motor test system |
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| Country | Link |
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| CN (1) | CN214872498U (en) |
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2021
- 2021-03-24 CN CN202120597968.2U patent/CN214872498U/en active Active
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Address after: Building G, Building 102, Zone A Office Building, Zhenxiong Industrial Park, No. 177 Renmin West Road, Jinsha Community, Kengzi Street, Pingshan District, Shenzhen City, Guangdong Province, 518000. Building A, Building B, Building C, Building D, Building E-1, Building F, Building B, Building 7, Building 8, Building 10, Building 11 Patentee after: CHEN HSONG MACHINERY (SHENZHEN) CO.,LTD. Address before: No.31 Renmin Middle Road, Kengzi office, Pingshan New District, Shenzhen, Guangdong 518000 Patentee before: CHEN HSONG MACHINERY (SHENZHEN) CO.,LTD. |