Torsion system and method of torsion machine

Abstract

The invention relates to a torsion system and method of a torsion machine. The torsion system comprises a switch, a touch screen, a PLC and a servo driver, wherein the touch screen, the PLC and the servo driver are in communication connection with the switch. The touch screen is used for responding to a click operation of a user on a rotation parameter and generating a rotation parameter signal, and meanwhile, the rotation parameter signal is sent to the PLC through the switch; the PLC is used for generating a pulse signal group according to the rotation parameter signal and sending the pulse signal group to the servo driver through the switch, the pulse signal group comprises n pulse signals, and n is greater than 0; and the servo driver is used for controlling the servo motor to execute a corresponding rotation angle according to the pulse signal group. Through cooperation of the PLC and the servo driver, low signal delay of the PLC and the servo driver is ensured, so that the control precision of the servo driver is ensured, and the servo motor driving torsion machine can be accurately positioned.

Description

Technical Field

[0001] The invention relates to the technical field of twisting machines, and in particular to a twisting system and method of a twisting machine. Background Art

[0002] A twisting machine is a device that applies torque to parts, etc., causing them to twist and achieve the desired degree of bending.

[0003] At present, the torsion system of the torsion machine uses the motor to provide rotational power to apply torque to the parts, and controls the rotation angle through the positioning switch and the motor. However, this control method has poor accuracy of the rotation angle due to the high signal delay between the positioning switch and the motor, which often makes the bending degree of the parts not meet the standard. Summary of the invention

[0004] Based on the above description, the present invention provides a torsion system and method of a torsion machine, aiming to solve the problem of poor accuracy of the rotation angle of the torsion system of the existing torsion machine.

[0005] The technical solution of the present invention to solve the above technical problems is as follows: In a first aspect, a torsion system of a torsion machine, the torsion system comprising a switch and a touch screen, a PLC controller and a servo drive communicatively connected to the switch; The touch screen is used to respond to the user's click operation on the rotation parameter and generate a rotation parameter signal, and send it to the PLC controller via the switch; The PLC controller is used to generate a pulse signal group according to the rotation parameter signal, and send the pulse signal group to the servo drive via the switch, wherein the pulse signal group includes n pulse signals, where n>0; The servo driver is used to control the servo motor to perform a corresponding rotation angle according to the pulse signal group.

[0006] Based on the above technical solution, the present invention can also be improved as follows.

[0007] Furthermore, the torsion system includes a power supply control circuit, which includes an intermediate relay KA0, a thermal relay KM and an intermediate relay KA1. The power input end of the switch and one end of the coil of the intermediate relay KA0 are connected to a first wire, one end of the switch of the intermediate relay KA0 is connected in parallel between the first wire and one end of the coil of the intermediate relay KA0, one end of the coil of the thermal relay KM and one end of the coil of the intermediate relay KA1 are both connected to the other end of the switch of the intermediate relay KA0, the electrical signal input end and the electrical signal output end of the servo driver are connected in series between the other end of the switch of the intermediate relay KA0 and one end of the coil of the thermal relay KM, one end of the first switch of the thermal relay KM is connected in parallel between one end of the switch of the intermediate relay KA0 and the servo The other end of the first switch of the thermal relay KM is connected in parallel between the electrical signal output end of the servo driver and one end of the coil of the thermal relay KM. The three-phase power input end of the servo controller is connected to the U line, V line and W line of the three-phase electricity via the three second switches of the thermal relay KM one by one. The power output end of the switch, the other end of the coil of the intermediate relay KA0, the other end of the coil of the thermal relay KM and the other end of the coil of the intermediate relay KA1 are used to access the second wire. One end of the switch of the intermediate relay KA1 is connected to the U line of the three-phase electricity. The power input end of the PLC controller is connected to the other end of the switch of the intermediate relay KA1. The power output end of the PLC controller and the three-phase power output end of the servo controller are connected to the N line of the three-phase electricity.

[0008] Furthermore, one end of the coil of the intermediate relay KA0 is connected to the first wire via the low-voltage circuit breaker QF2.

[0009] Furthermore, the power supply control circuit includes a control switch, and two ends of the control switch are connected in series between the low-voltage circuit breaker QF2 and the coil of the intermediate relay KA0.

[0010] Furthermore, the power supply control circuit includes a driving switch, and two ends of the driving switch are connected in series between the control switch and the coil of the intermediate relay KA0.

[0011] Furthermore, the power supply control circuit comprises a power indicator light HL4, one end of the power indicator light HL4 is connected in parallel between the low voltage circuit breaker QF2 and the control switch, and the other end of the power indicator light HL4 is used to access the second wire.

[0012] Furthermore, the power supply control circuit includes a control indicator light HL2, one end of the control indicator light HL2 is connected in parallel between the control switch and the drive switch, and the other end of the control indicator light HL2 is used to access the second wire.

[0013] Furthermore, the power supply control circuit includes an intermediate relay KA2, one end of the coil of the intermediate relay KA2 is connected in parallel between the other end of the switch of the intermediate relay KA0 and the signal input end of the servo driver, one end of the switch of the intermediate relay KA2 is connected to the U line of the three-phase electricity, and the torsion system includes a voltage-stabilized power supply, the power input end of the voltage-stabilized power supply is connected to the other end of the coil of the intermediate relay KA2, and the power output end of the voltage-stabilized power supply is connected to the N line of the three-phase electricity.

[0014] Furthermore, the torsion system includes a servo transformer, the three-phase power input end of the servo transformer is connected one-to-one to the three second switches of the thermal relay KM, and the three-phase power output end of the servo transformer is connected one-to-one to the three-phase power input end of the servo driver.

[0015] Further, the torsion method is applicable to the torsion system of the torsion machine according to the first aspect, comprising: The touch screen generates a rotation parameter signal in response to a user's click operation on the rotation parameter, and sends the signal to the PLC controller via the switch; The PLC controller generates a pulse signal group according to the rotation parameter signal, and sends the pulse signal group to the servo drive via the switch, wherein the pulse signal group includes n pulse signals, where n>0; The servo driver controls the servo motor to perform a corresponding rotation angle according to the pulse signal group.

[0016] Compared with the prior art, the technical solution of the present application has the following beneficial technical effects: the present application ensures low signal delay between the PLC controller and the servo drive through the cooperation between the PLC controller and the servo drive, thereby ensuring the control accuracy of the servo drive, so that the servo motor-driven torsion machine can be accurately positioned. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A communication block diagram of a torsion system of a torsion machine provided in an embodiment of the present invention; Figure 2 is a circuit connection diagram of a power supply control circuit in an embodiment of the present invention; Figure 3 This is a power supply principle diagram of a torsion system of a torsion machine provided in an embodiment of the present invention.

[0018] Description of reference numerals: 1. Switch; 2. Touch screen; 3. PLC controller; 4. Servo drive; 5. Power supply control circuit; 51. First wire; 52. Second wire; 53. Control switch; 54. Drive switch; 6. Stabilized power supply; 7. Servo transformer. DETAILED DESCRIPTION

[0019] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0021] It will be appreciated that spatial relationship terms such as "under," "beneath," "below," "under," "above," "above," etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It will be appreciated that, in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as being "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0022] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0023] Reference Figure 1As shown, the present invention provides a technical solution: a torsion system of a torsion machine, the torsion system comprising a switch 1 and a touch screen 2, a PLC controller 3 and a servo driver 4 which are communicatively connected to the switch 1; the touch screen 2 is used to respond to a user's click operation on a rotation parameter and generate a rotation parameter signal, and send it to the PLC controller 3 via the switch 1; the PLC controller 3 is used to generate a pulse signal group according to the rotation parameter signal, and send it to the servo driver 4 via the switch 1, the pulse signal group comprising n pulse signals, n>0; the servo driver 4 is used to control the servo motor to perform a corresponding rotation angle according to the pulse signal group.

[0024] In this embodiment, the cooperation between the PLC controller 3 and the servo driver 4 ensures low signal delay between the PLC controller 3 and the servo driver 4, thereby ensuring the control accuracy of the servo driver 4, so that the servo motor drives the torsion machine to be accurately positioned.

[0025] Reference Figures 1 to 3 As shown, in some embodiments, the torsion system includes a power supply control circuit 5, the power supply control circuit 5 includes an intermediate relay KA0, a thermal relay KM and an intermediate relay KA1, the power input end of the switch 1 and one end of the coil of the intermediate relay KA0 are connected to the first wire 51, one end of the switch of the intermediate relay KA0 is connected in parallel between the first wire 51 and one end of the coil of the intermediate relay KA0, one end of the coil of the thermal relay KM and one end of the coil of the intermediate relay KA1 are both connected to the other end of the switch of the intermediate relay KA0, the electrical signal input end and the electrical signal output end of the servo driver 4 are connected in series between the other end of the switch of the intermediate relay KA0 and one end of the coil of the thermal relay KM, one end of the first switch of the thermal relay KM is connected in parallel to one end of the switch of the intermediate relay KA0 and the servo The other end of the first switch of the thermal relay KM is connected in parallel between the electrical signal output end of the servo driver 4 and one end of the coil of the thermal relay KM. The three-phase power input end of the servo controller is connected to the U line, V line and W line of the three-phase electricity via the three second switches of the thermal relay KM one by one. The power output end of the switch 1, the other end of the coil of the intermediate relay KA0, the other end of the coil of the thermal relay KM and the other end of the coil of the intermediate relay KA1 are used to access the second wire 52. One end of the switch of the intermediate relay KA1 is connected to the U line of the three-phase electricity. The power input end of the PLC controller 3 is connected to the other end of the switch of the intermediate relay KA1. The power output end of the PLC controller 3 and the three-phase power output end of the servo controller are connected to the N line of the three-phase electricity.

[0026] Exemplarily, the power supply voltage of the first wire 51 may be a 24V power supply wire or the like.

[0027] In this embodiment, when the first wire 51 is connected, the coil of the intermediate relay KA0 is energized and the switch of the intermediate relay KA0 is closed, so that the coils of the servo driver 4 and the intermediate relay KA1 are energized. In addition, the coil of the thermal relay KM is energized and the switch of the thermal relay KM is closed. Thereafter, the currents of the switch 1, the coil of the intermediate relay KA0, the coil of the thermal relay KM, and the coil of the intermediate relay KA1 flow into the second wire 52. Thus, the switch 1, the PLC controller 3, and the servo driver 4 are energized, and the PLC controller 3 and the servo driver 4 are powered by 220V.

[0028] Reference Figure 2 As shown, in some embodiments, one end of the coil of the intermediate relay KA0 is connected to the first conductor 51 via the low-voltage circuit breaker QF2.

[0029] In this embodiment, when the power supply voltage of the first wire 51 is low, the low voltage circuit breaker QF2 is disconnected, thereby protecting the circuit to prevent damage to electrical equipment such as the switch 1, PLC controller 3 and servo drive 4 due to voltage instability.

[0030] Reference Figure 2 As shown, in some embodiments, the power supply control circuit 5 includes a control switch 53, and both ends of the control switch 53 are connected in series between the low-voltage circuit breaker QF2 and the coil of the intermediate relay KA0.

[0031] In this embodiment, when the control switch 53 is closed, the coil of the intermediate relay KA0 is energized and the switch of the intermediate relay KA0 is closed, thereby supplying power to the PLC controller 3 and the servo driver 4 .

[0032] Reference Figure 2 As shown, in some embodiments, the power supply control circuit 5 includes a drive switch 54, and two ends of the drive switch 54 are connected in series between the control switch 53 and the coil of the intermediate relay KA0.

[0033] In this embodiment, when the driving switch 54 is closed, the coil of the intermediate relay KA0 is energized and the switch of the intermediate relay KA0 is closed, thereby supplying power to the PLC controller 3 and the servo driver 4 .

[0034] Reference Figure 2 As shown, in some embodiments, the power supply control circuit 5 includes a power indicator light HL4 , one end of the power indicator light HL4 is connected in parallel between the low voltage circuit breaker QF2 and the control switch 53 , and the other end of the power indicator light HL4 is used to access the second wire 52 .

[0035] In this embodiment, when the low voltage circuit breaker QF2 is closed, the power indicator light HL4 lights up, indicating that the circuit is connected, so as to facilitate the feedback of the power-on status to the staff.

[0036] Reference Figure 2 As shown, in some embodiments, the power supply control circuit 5 includes a control indicator light HL2 , one end of the control indicator light HL2 is connected in parallel between the control switch 53 and the drive switch 54 , and the other end of the control indicator light HL2 is used to access the second wire 52 .

[0037] In this embodiment, when the control switch 53 is closed, the control indicator light HL2 lights up, indicating that the PLC controller 3 and the servo driver 4 are connected, so as to facilitate the feedback of the power-on status of the controller and the servo driver 4 to the staff.

[0038] Reference Figure 2~3 As shown, in some embodiments, the power supply control circuit 5 includes an intermediate relay KA2, one end of the coil of the intermediate relay KA2 is connected in parallel between the other end of the switch of the intermediate relay KA0 and the signal input end of the servo driver 4, one end of the switch of the intermediate relay KA2 is connected to the U line of the three-phase electricity, and the torsion system includes a voltage-stabilized power supply 6, the power input end of the voltage-stabilized power supply 6 is connected to the other end of the coil of the intermediate relay KA2, and the power output end of the voltage-stabilized power supply 6 is connected to the N line of the three-phase electricity.

[0039] In this embodiment, when the PLC controller 3 and the servo driver 4 etc. experience voltage fluctuations, the voltage-stabilizing power supply 6 plays a role in stabilizing the voltage, thereby ensuring the stability of the PLC controller 3 and the servo driver 4 etc. and preventing them from being damaged due to voltage fluctuations.

[0040] Reference Figure 3 As shown, in some embodiments, the torsion system includes a servo transformer 7, the three-phase power input terminals of the servo transformer 7 are connected one-to-one to the three second switches of the thermal relay KM, and the three-phase power output terminals of the servo transformer 7 are connected one-to-one to the three-phase power input terminals of the servo driver 4.

[0041] In this embodiment, before the three-phase power is input into the servo driver 4, the 220V is converted into a voltage suitable for the servo driver 4 by the servo transformer 7. In addition, the servo transformer 7 can isolate the servo driver 4 from the mains power grid to prevent the mains power grid failure from affecting the servo driver 4.

[0042] Reference Figure 2~3 As shown, in some embodiments, the three second switches of the relay KM are connected to the U line, V line and W line of the three-phase electricity via the low-voltage circuit breaker QF1 in a one-to-one correspondence.

[0043] In this embodiment, when the voltage of the mains grid is unstable or fails, the low voltage circuit breaker QF1 is disconnected in time to prevent the servo transformer 7 and the servo driver 4 from being affected. The relay KM2 is used to control the connection or disconnection of each phase of electricity.

[0044] Reference Figure 3 As shown, in some embodiments, one end of the switch of the intermediate relay KA1 is connected to the U line of the three-phase electricity via the low-voltage circuit breaker QF3.

[0045] In this embodiment, when the voltage of the mains power grid is unstable or fails, the low voltage circuit breaker QF3 is disconnected, thereby preventing the PLC controller 3 from being affected.

[0046] Reference Figure 3 As shown, in some embodiments, one end of the switch of the intermediate relay KA2 is connected to the U line of the three-phase electricity via the low-voltage circuit breaker QF4.

[0047] In this embodiment, when the voltage of the mains grid is unstable or fails, the low voltage circuit breaker QF4 is disconnected, thereby preventing the influence on the voltage stabilizing power supply 6.

[0048] The present invention provides a technical solution: a torsion method of a torsion machine, which is applicable to the torsion system of the above-mentioned torsion machine, and comprises the following steps: S1, the touch screen 2 generates a rotation parameter signal in response to the user's click operation on the rotation parameter, and sends it to the PLC controller 3 via the switch 1; S2, the PLC controller 3 generates a pulse signal group according to the rotation parameter signal, and sends it to the servo driver 4 via the switch 1 at the same time. The pulse signal group includes n pulse signals, n>0; S3, the servo driver 4 controls the servo motor to perform a corresponding rotation angle according to the pulse signal group.

[0049] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A torsion system of a torsion machine, characterized in that: The torsion system comprises a switch (1), a touch screen (2), a PLC controller (3) and a servo drive (4) which are communicatively connected to the switch (1); The touch screen (2) is used to respond to a user's click operation on a rotation parameter and generate a rotation parameter signal, and at the same time send the signal to the PLC controller (3) via the switch (1); The PLC controller (3) is used to generate a pulse signal group according to the rotation parameter signal, and send the pulse signal group to the servo drive (4) via the switch (1), wherein the pulse signal group includes n pulse signals, where n>0; The servo driver (4) is used to control the servo motor to perform a corresponding rotation angle according to the pulse signal group.

2. The torsion system of the torsion machine according to claim 1, characterized in that: The torsion system comprises a power supply control circuit (5), the power supply control circuit (5) comprising an intermediate relay KA0, a thermal relay KM and an intermediate relay KA1, a power input terminal of the switch (1) and one end of the coil of the intermediate relay KA0 are connected to a first wire (51), one end of the switch of the intermediate relay KA0 is connected in parallel between the first wire (51) and one end of the coil of the intermediate relay KA0, one end of the coil of the thermal relay KM and one end of the coil of the intermediate relay KA1 are both connected to the other end of the switch of the intermediate relay KA0, an electrical signal input terminal and an electrical signal output terminal of the servo driver (4) are connected in series between the other end of the switch of the intermediate relay KA0 and one end of the coil of the thermal relay KM, one end of the first switch of the thermal relay KM is connected in parallel between one end of the switch of the intermediate relay KA0 and the servo driver (4) The first switch of the thermal relay KM is connected in parallel between the electrical signal output end of the servo driver (4) and one end of the coil of the thermal relay KM. The three-phase power input end of the servo controller is connected to the U line, V line and W line of the three-phase power via the three second switches of the thermal relay KM. The power output end of the switch (1), the other end of the coil of the intermediate relay KA0, the other end of the coil of the thermal relay KM and the other end of the coil of the intermediate relay KA1 are used to connect to the second wire (52). One end of the switch of the intermediate relay KA1 is connected to the U line of the three-phase power. The power input end of the PLC controller (3) is connected to the other end of the switch of the intermediate relay KA1. The power output end of the PLC controller (3) and the three-phase power output end of the servo controller are connected to the N line of the three-phase power.

3. The torsion system of the torsion machine according to claim 2, characterized in that: One end of the coil of the intermediate relay KA0 is connected to the first conductor (51) via the low-voltage circuit breaker QF2.

4. The torsion system of the torsion machine according to claim 3, characterized in that: The power supply control circuit (5) comprises a control switch (53), wherein two ends of the control switch (53) are connected in series between the low-voltage circuit breaker QF2 and the coil of the intermediate relay KA0.

5. The torsion system of the torsion machine according to claim 4, characterized in that: The power supply control circuit (5) comprises a drive switch (54), wherein two ends of the drive switch (54) are connected in series between the control switch (53) and the coil of the intermediate relay KA0.

6. The torsion system of the torsion machine according to claim 5, characterized in that: The power supply control circuit (5) comprises a power indicator light HL4, one end of the power indicator light HL4 is connected in parallel between the low-voltage circuit breaker QF2 and the control switch (53), and the other end of the power indicator light HL4 is used to connect to the second wire (52).

7. The torsion system of the torsion machine according to claim 6, characterized in that: The power supply control circuit (5) comprises a control indicator light HL2, one end of the control indicator light HL2 is connected in parallel between the control switch (53) and the drive switch (54), and the other end of the control indicator light HL2 is used to connect to the second wire (52).

8. The torsion system of the torsion machine according to claim 7, characterized in that: The power supply control circuit (5) includes an intermediate relay KA2, one end of the coil of the intermediate relay KA2 is connected in parallel between the other end of the switch of the intermediate relay KA0 and the signal input end of the servo driver (4), one end of the switch of the intermediate relay KA2 is connected to the U line of the three-phase electricity, and the torsion system includes a voltage-stabilized power supply (6), the power input end of the voltage-stabilized power supply (6) is connected to the other end of the coil of the intermediate relay KA2, and the power output end of the voltage-stabilized power supply (6) is connected to the N line of the three-phase electricity.

9. The torsion system of the torsion machine according to claim 2, characterized in that: The torsion system comprises a servo transformer (7), wherein a three-phase power input end of the servo transformer (7) is connected one-to-one to the three second switches of the thermal relay KM, and a three-phase power output end of the servo transformer (7) is connected one-to-one to the three-phase power input end of the servo driver (4).

10. A twisting method for a twisting machine, characterized in that: The torsion method is applicable to a torsion system of a torsion machine according to any one of claims 1 to 9, comprising: The touch screen (2) generates a rotation parameter signal in response to a user's click operation on the rotation parameter, and simultaneously sends the signal to the PLC controller (3) via the switch (1); The PLC controller (3) generates a pulse signal group according to the rotation parameter signal, and sends the pulse signal group to the servo drive (4) via the switch (1), wherein the pulse signal group includes n pulse signals, where n>0; The servo driver (4) controls the servo motor to perform a corresponding rotation angle according to the pulse signal group.

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