An assembly device for steel stripping on vehicle-mounted reactor

Abstract

The present invention discloses an assembly device for beating steel strips on vehicle-mounted reactors, comprising a control cabinet, a steel strip beating structure connected to the control cabinet, the control cabinet comprising a touch screen, a PLC, an analog output module and a servo driver, the steel strip beating structure mainly comprising a servo motor, a reducer, a translation cylinder, a cutting cylinder, a cutting shaft, a tightening shaft and a material receiving box arranged on a base, the servo driver and the servo motor are connected to provide power for the device to beating steel strips; the touch screen transmits the set torque value to the PLC through a communication line, the PLC then transmits the torque value to the analog output module, the analog output module outputs a voltage value and transmits it to the servo driver, and the servo driver calculates and gives the voltage and current of the servo motor to change the output torque of the motor. The present invention solves the phenomenon of labor-intensive steel strip beating, unifies the torque of steel strip beating, greatly improves the production efficiency of reactors, and improves the overall quality of products.

Description

Technical Field

[0001] The invention relates to an assembly device for strapping a steel strip on a vehicle-mounted reactor. Background Art

[0002] With the continuous development of society, the cost of employing people is getting higher and higher. At the same time, automation technology is also constantly improving, so more and more manufacturing companies are using automated equipment to replace manual labor.

[0003] The steel belt serves to fix the two coils. It goes around the two coils and is pierced and knotted at the joint to fix them.

[0004] In the production process of vehicle-mounted reactors, after the coils are made, two sets of coils are combined into a reactor, and the two coils need to be fixed. In the previous production process, steel belts were tightened manually to clamp the two coils. Due to the large output, employees repeated the same action every day, and tightening the steel belts required a lot of strength, which increased the labor intensity of the staff and reduced the efficiency of vehicle-mounted reactor production. Summary of the invention

[0005] In order to solve the above problems existing in the prior art, the present invention proposes an assembly device for steel stripping on a vehicle-mounted reactor, which can solve the problem that process consistency and efficiency need to be improved in the production process of the vehicle-mounted reactor.

[0006] The present invention can be implemented through the following technical solutions:

[0007] An assembly device for beating steel strips on a vehicle-mounted reactor comprises a control cabinet and a steel strip beating structure connected to the control cabinet, the control cabinet comprising a touch screen, a PLC, an analog output module and a servo driver, the steel strip beating structure mainly comprising a servo motor, a reducer, a translation cylinder and a tightening shaft arranged on a base, the servo motor is fixed on the reducer, the tightening shaft is fixed on the other end of the reducer, the servo motor, the reducer and the tightening shaft are coaxially hard-connected, and the servo motor, the reducer and the tightening shaft form a transverse structure fixed on a bracket, the bracket has two parallel assembled sliders, the sliders are connected to guide rails, the guide rails are fixed on the steel strip machine structure, the translation cylinder provides power for the transverse structure; the servo driver is connected to the servo motor to provide power for the device to beating steel strips; the touch screen transmits the set torque value to the PLC through a communication line, the PLC then transmits the torque value to the analog output module, the analog output module outputs a voltage value and transmits it to the servo driver, and the servo driver calculates and gives the voltage and current of the servo motor to change the output torque of the motor.

[0008] Furthermore, it also includes a steel strip cutting system, which includes a cutting cylinder and a cutting shaft. The cutting cylinder drives the cutting shaft to rotate, so that the steel strip is rubbed and cut in the cutting shaft, and the cut steel strip automatically falls into a receiving box arranged below the cutting shaft.

[0009] Furthermore, the cutting cylinder is fixed on a base.

[0010] Furthermore, the servo motor is the power source of the tightening shaft, the servo motor model is Panasonic MHMF042L1U2M, and the power is 400W; the servo driver is set to torque control mode, and the servo driver model is Panasonic MBDLT25SF.

[0011] Furthermore, the ratio of the reducer is 25, and the torque increases by 25 times. The increased torque drives the tightening shaft to rotate, thereby driving the steel belt to tighten.

[0012] Furthermore, the torque of the steel strip is set through the touch screen, and the PLC calculates the analog output module to output a voltage of 0 to 10V according to the set torque value. The servo driver reads the voltage value, changes the servo motor current and voltage value, and thus changes the servo motor output torque.

[0013] Furthermore, the specific control process of the torque is as follows:

[0014] 1) Open the parameter display interface on the touch screen and enter the motor torque value;

[0015] 2) The touch screen transmits the set torque value to the PLC through the 232 communication line, and the PLC then transmits the torque value to the analog output module. At this time, the torque value is a 12-bit data value;

[0016] 3) The analog output module converts the 12-bit data value into a 2-bit analog value;

[0017] 4) The 2-bit analog value is transmitted to the servo motor through the connecting wire, thereby controlling the motor torque.

[0018] Furthermore, the assembly device for strapping a steel strip on a vehicle-mounted reactor of the present invention includes a semi-automatic working mode and a manual working mode.

[0019] Furthermore, the semi-automatic working mode specifically includes:

[0020] 1) The output motor returns to the origin;

[0021] 2) Start;

[0022] 3) Manually thread the steel belt into the tightening shaft;

[0023] 4) Step on the pedal to rotate the tightening shaft clockwise to tighten the steel belt and wait for the servo motor to be in zero speed state;

[0024] 5) Rotate the product so that the head of the steel strip forms an acute angle;

[0025] 6) PLC controls the shearing cylinder to cut the steel strip;

[0026] 7) Rotate the fixture counterclockwise 2-3 times;

[0027] 8) The translation fixture removes the excess material from the steel strip;

[0028] 9) Press the foot switch to reset the tightening shaft;

[0029] 10) Repeat steps 3-9.

[0030] Furthermore, the manual working mode is used for equipment debugging and fault shutdown state, and each output point is controlled individually, including returning to the origin, motor forward and reverse rotation, and cutting off the cylinder or translating the cylinder.

[0031] Beneficial Effects

[0032] The present invention solves the problem of labor-intensive steel strip beating, unifies the torque of steel strip beating, greatly improves the production efficiency of the reactor, and improves the overall quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the structure of the steel belt structure in the present invention;

[0034] Figure 2 It is a semi-automatic workflow diagram of the present invention;

[0035] Figure 3 This is a flow chart of torque setting in the present invention;

[0036] Figure 4 The electrical control principle of the present invention Figure 1 ;

[0037] Figure 5 The electrical control principle of the present invention Figure 2 ;

[0038] Figure 6 This is the functional diagram of the analog output module;

[0039] Figure 7 This is the principle diagram of the servo motor torque control mode;

[0040] Figure 8 This is the wiring diagram for the servo drive X4 interface;

[0041] Fig. 9 This is the wiring diagram for the analog output module. DETAILED DESCRIPTION

[0042] The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0043] The present invention discloses an assembly device for steel stripping on a vehicle-mounted reactor, the whole device includes a control cabinet, a steel stripping structure and a wiring harness connecting the control cabinet and the steel stripping structure. The control cabinet mainly includes a touch screen, a PLC, an analog output module and a servo driver, which mainly controls the action of the entire steel strip machine. Figure 1 As shown, the steel belt structure mainly includes the servo motor 1 on the base 7, the reducer 2, the translation cylinder 3, the cutting cylinder 6, the cutting shaft 5, the tightening shaft 4 and the receiving box, which are mainly responsible for the action execution of the steel belt machine. The servo motor 1 is fixed on the reducer 2, and the tightening shaft 4 is fixed on the other end of the reducer 2. The servo motor 1, the reducer 2 and the tightening shaft 5 are coaxially hard connected, so that the servo motor 1 rotates to drive the reducer 2. The ratio of the reducer we choose is 25, and the torque is increased by 25 times. The increased 25 times torque drives the tightening shaft to rotate, thereby driving the steel belt to tighten. The servo motor 1, the reducer 2 and the tightening shaft 5 form a transverse structure, which is fixed on the bracket. The bracket has two parallel assembled sliders, which are connected to the guide rails, and the guide rails are fixed on the steel belt machine structure. The friction coefficient between the slider and the guide rail is very small, so that the entire transverse structure can move horizontally. The power for this transverse movement is provided by the translation cylinder. The steel strip cutting system is a cutting cylinder 6 driving the cutting shaft 5 to rotate, so that the steel strip is cut in the cutting shaft sleeve. The cutting cylinder 6 is fixed on the base 7. The servo driver is connected to the servo motor 1 to provide power for the device to beat the steel strip. The touch screen transmits the set torque value to the PLC through the communication line, and the PLC transmits the torque value to the analog output module. The analog output module outputs the voltage value to the servo driver, and the servo driver calculates and gives the voltage and current of the servo motor to change the output torque of the motor. The present invention solves the problem that the existing manual steel strip beating method is to circle around the steel strip with the hands, which is laborious and the torque cannot be guaranteed to be uniform.

[0044] The servo motor is the power source of the tightening device. The servo motor model is Panasonic MHMF042L1U2M, with a power of 400W. The servo driver is set to torque control mode. The servo driver model is Panasonic MBDLT25SF. The servo motor output shaft and the tightening shaft are coaxially hard connected. The servo motor drives the tightening shaft to rotate and tighten the steel belt. The steel belt cutting system is a cylinder-driven cutting shaft that rotates, so that the steel belt is cut by rubbing in the cutting sleeve shaft.

[0045] The present invention provides an assembly device for a vehicle-mounted reactor which changes the manual operation of steel strip beating to that of a machine, comprising: a steel strip tightening structure (after the steel strip passes through a tightening shaft, a switch is started and the machine begins to tighten automatically); a steel strip cutting mechanism (after the steel strip is tightened, the steel strip is automatically cut by the cutting shaft); and a steel strip tail recovery device (the excess steel strip automatically falls into a tail box after being cut off).

[0046] On the other hand, the present invention also provides an assembly device for setting the torque for beating a steel strip of a vehicle-mounted reactor, including: development of a touch screen torque setting interface (a human-machine interface for torque setting, with adjustable torque); development of a PLC program (responsible for logical control of a steel strip beating machine); communication between the touch screen, PLC, analog output module and servo driver (through conversion and transmission of the torque value data type set by the touch screen); and an implementation plan for the set torque (the torque for beating the steel strip is set through the touch screen, the touch screen communicates with the PLC, and the set torque is output to the servo motor to control the force for beating the steel strip).

[0047] The semi-automatic workflow provided by the present invention is as follows Figure 2 As shown, first, when the steel strip machine is powered off and restarted, the servo motor needs to be manually returned to the origin. The origin is the starting point of the servo rotation, and the number of rotations is counted based on the origin. After returning to the origin, click the start button to translate the cylinder, the tightening shaft extends, and enters the semi-automatic mode;

[0048] When the reactor core is assembled and enters the steel strip beating process, the employee clamps the steel strip around the core, and the head of the steel strip passes through the tightening shaft of the steel strip beating machine. The employee steps on the foot switch, and the servo motor starts to tighten the steel strip. When the torque value is reached, the servo motor maintains zero speed, and the servo driver outputs a zero speed signal to the PLC. At this time, the product is rotated to make the head of the steel strip an acute angle, so that the steel strip will not shrink under force. Then release the foot switch, and the PLC controls the shearing cylinder to cut the steel strip. After the shearing cylinder action is achieved, the cylinder moving point signal is output to the PLC, indicating that the steel strip is cut. The servo motor reverses again to collect the tail material, and the servo motor stops when it reaches the number of retraction circles set by the parameters. The tail material is wrapped around the tightening shaft, and the translation cylinder is retracted to unload the tail material into the tail material box. Finally, step on the foot switch again, the servo motor rotates to return the tightening shaft, and then the translation cylinder action returns to the third step of the cycle.

[0049] Manual working mode is applicable to equipment debugging and fault shutdown state. Manual mode can control each output point individually, such as returning to the origin, motor forward and reverse rotation, cutting off the cylinder and translating the cylinder. In the final stage of equipment development, the whole machine needs to be debugged. At this time, manual mode is required to debug a single function. Only after the single function is debugged can the whole machine be operated. Or in the case of a fault shutdown state, manual mode is also required to directly control a single function and complete the fault clearing.

[0050] The torque of the servo motor is calculated according to the formula T = 9550P / n; T represents torque, in Nm (Newton meter); P represents power, in kW (kilowatt), and we choose a servo motor with a rated power of 0.4kW; n represents the rated speed of the motor, in r / min (revolutions per minute), and we choose a servo motor with a rated speed of 3000r / min; Substitute T = 9550P / n into the formula to get T = 1.27Nm. This is the rated torque of the servo motor. Add the ratio of the reducer (the ratio of the reducer we choose is 25), and the maximum torque of the steel belt conveyor is calculated to be T*25, which is 31.75Nm.

[0051] The present invention sets the torque of the steel belt through the touch screen. The PLC calculates the set torque value to make its analog output module output 0 to 10V voltage. The servo driver reads the voltage value and changes the servo motor current and voltage value, thereby changing the servo motor output torque. The torque setting process is as follows: Figure 3 As shown, specifically:

[0052] 1. Open the touch screen parameter display interface and enter the motor torque value;

[0053] 2. The touch screen transmits the set torque value to the PLC through the 232 communication line, and the PLC then transmits the torque value to the analog output module. At this time, the torque value is a 12-bit data value;

[0054] 3. The analog output module converts the 12-bit data value into a 2-bit analog value (we choose voltage output);

[0055] The 4.2-bit analog value is transmitted to the servo motor through the connecting wire, thereby controlling the motor torque.

[0056] in, Figure 4 and 5 They are respectively the electrical control principle diagram of the present invention, Figure 6 This is the functional diagram of the analog output module. Figure 7 This is the principle diagram of the servo motor torque control mode; Figure 8 This is the wiring diagram for the servo drive X4 interface; Fig. 9 This is the wiring diagram of the analog output module. Here we only use channel 1, and the specific terminals are VOUT1, IOUT1 and COM1. The channel 2 terminals VOUT2, IOUT2 ​​and COM2 are suspended. VOUT1 is connected to the 14th pin of the driver's X4 connector, indicating that the set torque is converted into an analog voltage and transmitted to the driver. This is the positive pole of the analog voltage. IOUT1 and COM1 are short-circuited and connected to the 15th pin of the driver's X4 connector, indicating that the set torque is converted into the negative pole of the analog voltage.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An assembly device for steel stripping on a vehicle-mounted reactor, characterized in that: It includes a control cabinet and a steel strip beating structure connected to the control cabinet. The control cabinet includes a touch screen, a PLC, an analog output module and a servo driver. The steel strip beating structure includes a servo motor, a reducer, a translation cylinder and a tightening shaft arranged on a base. The servo motor is fixed on the reducer, and the tightening shaft is fixed on the other end of the reducer. The servo motor, the reducer and the tightening shaft are coaxially hard-connected, and the servo motor, the reducer and the tightening shaft form a transverse structure fixed on a bracket. The bracket has two parallel assembled sliders, the sliders are connected to guide rails, and the guide rails are fixed on the steel strip machine structure. The translation cylinder provides power for the transverse structure; the servo driver is connected to the servo motor to provide power for the device to beat the steel strip; the touch screen transmits the set torque value to the PLC through a communication line, and the PLC then transmits the torque value to the analog output module, and the analog output module transmits the output voltage value to the servo driver, and the servo driver calculates the voltage and current of the servo motor to change the output torque of the motor.

2. The assembly device for steel stripping on a vehicle-mounted reactor according to claim 1, characterized in that: It also includes a steel strip cutting system, which includes a cutting cylinder and a cutting shaft. The cutting cylinder drives the cutting shaft to rotate, so that the steel strip is rubbed and cut in the cutting shaft, and the cut steel strip automatically falls into a receiving box arranged below the cutting shaft.

3. The assembly device for steel stripping on a vehicle-mounted reactor according to claim 2, characterized in that: The cutting cylinder is fixed on the base.

4. The assembly device for steel stripping on a vehicle-mounted reactor according to claim 2, characterized in that: The servo motor is the power source of the tightening shaft, the servo motor model is Panasonic MHMF042L1U2M, and the power is 400W; the servo driver is set to the torque control mode, and the servo driver model is Panasonic MBDLT25SF.

5. The assembly device for steel stripping on a vehicle-mounted reactor according to claim 1, characterized in that: The ratio of the reducer is 25, and the torque increases by 25 times. The 25-fold increased torque drives the tightening shaft to rotate, thereby driving the steel belt to tighten.

6. The assembly device for steel stripping on a vehicle-mounted reactor according to claim 1, characterized in that: The torque of the steel strip is set through the touch screen, and the PLC calculates the analog output module to output a voltage of 0 to 10V according to the set torque value. The servo driver reads the voltage value, changes the servo motor current and voltage value, and thus changes the servo motor output torque.

7. The assembly device for steel stripping on a vehicle-mounted reactor according to claim 6, characterized in that: The specific control process of the torque is as follows: 1) Open the parameter display interface on the touch screen and enter the motor torque value; 2) The touch screen transmits the set torque value to the PLC through the 232 communication line, and the PLC then transmits the torque value to the analog output module. At this time, the torque value is a 12-bit data value; 3) The analog output module converts the 12-bit data value into a 2-bit analog value; 4) The 2-bit analog value is transmitted to the servo motor through the connecting wire, thereby controlling the motor torque.

8. The assembly device for steel stripping on a vehicle-mounted reactor according to claim 1, characterized in that: Includes semi-automatic working mode and manual working mode.

9. The assembly device for steel stripping on a vehicle-mounted reactor according to claim 8, characterized in that: The semi-automatic working mode specifically includes: 1) The output motor returns to the origin; 2) Start; 3) Manually thread the steel belt into the tightening shaft; 4) Press the pedal to rotate the tightening shaft clockwise to tighten the steel belt and wait for the servo motor to be in zero speed state; 5) Rotate the product so that the head of the steel strip forms an acute angle; 6) PLC controls the shearing cylinder to cut the steel strip; 7) Rotate the fixture counterclockwise 2-3 times; 8) The translation fixture removes the excess material from the steel strip; 9) Press the foot switch to reset the tightening shaft; 10) Repeat steps 3-9.

10. The assembly device for steel stripping on a vehicle-mounted reactor according to claim 8, characterized in that: The manual working mode is used for equipment debugging and fault shutdown state, and each output point is controlled individually, including returning to the origin, motor forward and reverse rotation, and cutting off the cylinder or translating the cylinder.

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