Motor control circuit, processing platform and processing equipment

Abstract

The utility model discloses a motor control circuit, a processing platform and processing equipment, which are used for controlling the working states of a first motor and a second motor, a first direction is set as a horizontal direction, the first motor is used for driving a first workbench to move along the first direction, and the second motor is used for driving a second workbench to move along the first direction. The first workbench is located above the second workbench and comprises a frequency conversion module and a control module. The frequency conversion module is provided with a power output interface, a first power supply branch and a second power supply branch, one end of the first power supply branch and one end of the second power supply branch are electrically connected with the power output interface, and the other end of the first power supply branch is used for being electrically connected with a first power input interface of the first motor. The other end of the second power supply branch is used for being electrically connected with a second power input interface of a second motor. The motor control circuit can effectively simplify the structure.

Description

Technical Field

[0001] The present application relates to the field of laser cutting technology, and in particular to a motor control circuit, a processing platform and processing equipment. Background Art

[0002] Fiber laser cutting machines are generally equipped with a processing area and a loading and unloading area. The workbench carrying the plate to be processed moves from the loading and unloading area to the processing area under the traction of the motor and chain to process the plate. After the plate is processed, the workbench moves from the processing area to the loading and unloading area with the processed plate under the traction of the motor and chain to complete the unloading of the processed plate and the loading of the plate to be processed.

[0003] In the related art, when the sheet is large and the workbench is heavy, two workbenches spaced apart in the vertical direction are driven by two motors respectively. However, the motor control circuit that controls the working state of the motor has a complex structure, resulting in high equipment costs. Utility Model Content

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a motor control circuit which can effectively simplify the structure.

[0005] The present application also proposes a processing platform having the above motor control circuit.

[0006] The present application also proposes a processing device having the above processing platform.

[0007] According to the first aspect of the present application, the motor control circuit is used to control the working state of the first motor and the second motor. Assuming that the first direction is the horizontal direction, the first motor is used to drive the first workbench to move along the first direction, and the second motor is used to drive the second workbench to move along the first direction. The first workbench is located above the second workbench, including:

[0008] A frequency conversion module, provided with a power output interface, a first power supply branch and a second power supply branch, one end of the first power supply branch and the second power supply branch are both electrically connected to the power output interface, the other end of the first power supply branch is used to be electrically connected to the first power input interface of the first motor, and the other end of the second power supply branch is used to be electrically connected to the second power input interface of the second motor;

[0009] A control module, electrically connected to the frequency conversion module, is configured to issue a first control signal, a second control signal, and a third control signal; when the frequency conversion module receives the first control signal, the frequency conversion module can drive the first motor to operate; when the frequency conversion module receives the second control signal, the frequency conversion module can drive the second motor to operate; when the frequency conversion module receives the first control signal and the second control signal simultaneously, the frequency conversion module can drive the first motor and the second motor to operate together.

[0010] The motor control circuit according to the embodiment of the present application has at least the following beneficial effects: after the control module issues different control signals, the frequency conversion module can complete the switching control of the first motor and the second motor according to the corresponding control signals; by changing the output frequency of the power supply through the frequency conversion module, the working state control of the first motor and the second motor can be completed by a single frequency conversion module, and the structure is simple.

[0011] According to some embodiments of the present application, the first power supply branch and the second power supply branch are connected in parallel, the frequency conversion module is provided with a COM interface and a single / double channel selection interface, and the control module includes:

[0012] A first control branch, with both ends of the first control branch electrically connected to the COM interface and the single / double channel selection interface respectively;

[0013] A first contactor, including a first normally open main contact and a first normally open auxiliary contact, the first normally open main contact is connected in series to the first power supply branch, and the signal generated when the first normally open main contact is closed is the first control signal; the first normally open auxiliary contact is connected in series to the first control branch;

[0014] A second contactor, including a second normally open main contact and a second normally open auxiliary contact, the second normally open main contact is connected in series to the second power supply branch, and the signal generated when the second normally open main contact is closed is the second control signal; the second normally open auxiliary contact is connected in series to the first control branch;

[0015] Wherein, when both the second normally open auxiliary contact and the first normally open auxiliary contact are closed, the frequency conversion module outputs twice the working current from the power supply output interface, and the working current is the current required for the normal operation of the first motor or the second motor.

[0016] According to some embodiments of the present application, the first brake is used to hold or release the first rotor of the first motor, the first contactor further includes a first coil, and the control module further includes:

[0017] A third power supply branch, used to supply power to the first brake, and the first coil is connected in series to the third power supply branch;

[0018] The first relay is connected in series to the third power supply branch, and the first relay is configured to control the on / off of the third power supply branch.

[0019] According to some embodiments of the present application, the second brake is configured to hold or release the second rotor of the second motor, the second contactor further includes a second coil, and the control module further includes:

[0020] A fourth power supply branch for supplying power to the second brake, and the second coil is connected in series to the fourth power supply branch;

[0021] The second relay is connected in series to the fourth power supply branch, and the second relay is configured to control the on / off of the fourth power supply branch.

[0022] According to some embodiments of the present application, the third power supply branch and the fourth power supply branch are connected in parallel.

[0023] According to some embodiments of the present application, the frequency conversion module is further provided with a forward rotation interface and a COM interface, and the control module further includes:

[0024] A fifth control branch, and two ends of the fifth control branch are electrically connected to the forward rotation interface and the COM interface respectively;

[0025] The third relay is connected in series to the fifth control branch; when the third relay connects the fifth control branch, at least one of the first motor and the second motor rotates forward; when the third relay disconnects the fifth control branch, at least one of the first motor and the second motor does not operate.

[0026] According to some embodiments of the present application, the frequency conversion module is further provided with a reverse rotation interface, and the control module further includes:

[0027] A sixth control branch, and two ends of the sixth control branch are electrically connected to the reverse rotation interface and the COM interface respectively;

[0028] The fourth relay is connected in series to the sixth control branch; when the fourth relay connects the sixth control branch, at least one of the first motor and the second motor rotates in reverse; when the fourth relay disconnects the sixth control branch, at least one of the first motor and the second motor does not operate.

[0029] According to some embodiments of the present application, the frequency conversion module further includes a speed change interface, and the control module further includes:

[0030] A seventh control branch, and two ends of the seventh control branch are electrically connected to the speed change interface and the COM interface respectively;

[0031] The fifth relay is connected in series to the seventh control branch; when the fifth relay connects the seventh control branch, at least one of the first motor and the second motor rotates at a first speed; when the fifth relay disconnects the seventh control branch, at least one of the first motor and the second motor rotates at a second speed, and the second speed is less than the first speed.

[0032] The processing platform according to the second aspect embodiment of the present application includes:

[0033] The above-mentioned motor control circuit;

[0034] The first workbench for carrying the workpiece;

[0035] The second workbench for carrying the workpiece;

[0036] The first motor for driving the first workbench to move along the first direction;

[0037] The second motor for driving the second workbench to move along the first direction.

[0038] The processing platform according to the embodiment of the present application has at least the following beneficial effects: By using the above-mentioned motor control circuit, it is beneficial to simplify the structure of the processing platform, and thus reduce the cost of the processing platform.

[0039] The processing equipment according to the third aspect embodiment of the present application includes:

[0040] The above-mentioned processing platform;

[0041] The processing device for processing the workpiece.

[0042] The processing equipment according to the embodiment of the present application has at least the following beneficial effects: By using the above-mentioned processing platform, it is beneficial to simplify the structure of the processing equipment.

[0043] The additional aspects and advantages of the present application will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present application. Description of the Drawings

[0044] The following further describes the present application in conjunction with the drawings and embodiments, where:

[0045] Figure 1 is a schematic diagram of the motor control circuit according to the embodiment of the present application;

[0046] Figure 2 is a schematic diagram of the processing platform according to the embodiment of the present application;

[0047] Figure 3Circuit schematic diagram of the motor control circuit according to an embodiment of the present application;

[0048] Figure 4 Schematic diagram of the processing device according to an embodiment of the present application.

[0049] Reference numerals: fifth control branch 01, sixth control branch 02, seventh control branch 03, first control branch 04, fourth power supply branch 12, third power supply branch 15;

[0050] Forward rotation interface 8, reverse rotation interface 9, speed change interface 10, single / double channel selection interface 11, COM interface 13;

[0051] Third relay KA3, fourth relay KA4, fifth relay KA5, first relay KA7, second relay KA8;

[0052] First contactor KM1, first coil KM1-1, first normally open main contact KM1-2, first normally open auxiliary contact KM1-3;

[0053] Second contactor KM2, second coil KM2-1, second normally open main contact KM2-2, second normally open auxiliary contact KM2-3;

[0054] Control module 110, power output interface 111, first power supply branch 112, second power supply branch 113, frequency conversion module 120;

[0055] Processing platform 200, first motor 210, first power input interface 211, first workbench 220, second workbench 230, second motor 240, second power input interface 241;

[0056] Processing device 300. Detailed implementation manners

[0057] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for explaining the present application and should not be construed as limiting the present application.

[0058] In the description of the present application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application.

[0059] In the description of the present application, the meaning of "a number of" is one or more, the meaning of "multiple" is two or more, "greater than", "less than", "exceeding", etc. are understood as not including the present number, and "above", "below", "within", etc. are understood as including the present number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0060] In the description of the present application, unless otherwise clearly defined, terms such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above terms in the present application in combination with the specific content of the technical solution.

[0061] In the description of the present application, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0062] Referring to Figures 1 to 3 , the motor control circuit according to the first aspect embodiment of the present application is used to control the working states of the first motor 210 and the second motor 240. Let the first direction be the horizontal direction. The first motor 210 is used to drive the first workbench 220 to move along the first direction (referring to Figure 2 , for example, the first direction is the left - right direction), the second motor 240 is used to drive the second workbench 230 to move along the first direction, the first workbench 220 is located above the second workbench 230, and it includes a control module 110 and a frequency conversion module 120.

[0063] The frequency conversion module 120 is provided with a power output interface 111, a first power supply branch 112, and a second power supply branch 113 (referring to Figure 3 ). One ends of the first power supply branch 112 and the second power supply branch 113 are both electrically connected to the power output interface 111. The other end of the first power supply branch 112 is used to be electrically connected to the first power input interface 211 of the first motor 210, and the other end of the second power supply branch 113 is used to be electrically connected to the second power input interface 241 of the second motor 240.

[0064] The control module 110 is electrically connected to the frequency conversion module 120. The control module 110 is configured to issue a first control signal, a second control signal, and a third control signal. When the frequency conversion module 120 receives the first control signal, the frequency conversion module 120 can drive the first motor 210 to operate. When the frequency conversion module 120 receives the second control signal, the frequency conversion module 120 can drive the second motor 240 to operate. When the frequency conversion module 120 receives both the first control signal and the second control signal simultaneously, the frequency conversion module 120 can drive the first motor 210 and the second motor 240 to operate together.

[0065] The motor control circuit according to the embodiment of the present application has at least the following beneficial effects: after the control module 110 issues different control signals, the frequency conversion module 120 can complete the switching control of the first motor 210 and the second motor 240 according to the corresponding control signals; by changing the output frequency of the power supply through the frequency conversion module 120, the working state control of the first motor 210 and the second motor 240 can be completed by a single frequency conversion module 120, and the structure is simple.

[0066] Specifically, the frequency conversion module 120 generally includes an inverter.

[0067] Refer to Figure 3 , in some embodiments of the present application, the first power supply branch 112 and the second power supply branch 113 are connected in parallel. The frequency conversion module 120 is provided with a COM interface 13 and a single / double channel selection interface 11. The control module 110 includes a first control branch 04, a first contactor KM1, and a second contactor KM2. Both ends of the first control branch 04 are electrically connected to the COM interface 13 and the single / double channel selection interface 11 respectively.

[0068] The first contactor KM1 includes a first normally open main contact KM1-2 and a first normally open auxiliary contact KM1-3. The first normally open main contact KM1-2 is connected in series to the first power supply branch 112, and the signal generated when the first normally open main contact KM1-2 is closed is the first control signal. The first normally open auxiliary contact KM1-3 is connected in series to the first control branch 04.

[0069] The second contactor KM2 includes a second normally open main contact KM2-2 and a second normally open auxiliary contact KM2-3. The second normally open main contact KM2-2 is connected in series to the second power supply branch 113, and the signal generated when the second normally open main contact KM2-2 is closed is the second control signal. The second normally open auxiliary contact KM2-3 is connected in series to the first control branch 04.

[0070] Wherein, when both the second normally open auxiliary contact KM2-3 and the first normally open auxiliary contact KM1-3 are closed, the frequency conversion module 120 outputs twice the working current from the power supply output interface 111, and the working current is the current required for the normal operation of the first motor 210 or the second motor 240.

[0071] By paralleling the first power supply branch 112 and the second power supply branch 113, when both the second normally open auxiliary contact KM2-3 and the first normally open auxiliary contact KM1-3 are closed, the frequency conversion module 120 outputs twice the working current from the power supply output interface 111, so that both the first motor 210 and the second motor 240 can operate normally.

[0072] It should be noted that when the first control branch 04 is not connected, the frequency conversion module 120 receives a single-channel signal, and the frequency conversion module 120 outputs a single working current from the power supply output interface 111. When the first control branch 04 is connected, the frequency conversion module 120 receives a two-channel signal, and the frequency conversion module 120 outputs twice the working current from the power supply output interface 111.

[0073] It should be noted that when the first normally open main contact KM1-2 is closed, the first power supply branch 112 is connected, and the first motor 210 can operate normally. When the second normally open main contact KM2-2 is closed, the second power supply branch 113 is connected, and the second motor 240 can operate normally.

[0074] Refer to Figure 3 In the improved solution of the above embodiment, the first brake is used to hold or release the first rotor of the first motor 210. The first contactor KM1 further includes a first coil KM1-1, and the control module 110 further includes a third power supply branch 15 and a first relay KA7. The third power supply branch 15 is used to supply power to the first brake, and the first coil KM1-1 is connected in series to the third power supply branch 15. The first relay KA7 is connected in series to the third power supply branch 15, and the first relay KA7 is used to control the on-off of the third power supply branch 15.

[0075] By connecting the first coil KM1-1 of the first contactor KM1 in series to the third power supply branch 15, the start of the first motor 210 can be based on the fact that the first brake has released the first rotor of the first motor 210, thereby reducing the probability of the first motor 210 starting when the first brake holds the first rotor, and further protecting the first motor 210.

[0076] Refer to Figure 3 In the improved solution of the above embodiment, the second brake is used to hold or release the second rotor of the second motor 240. The second contactor KM2 further includes a second coil KM2-1, and the control module 110 further includes a fourth power supply branch 12 and a second relay KA8. The fourth power supply branch 12 is used to supply power to the second brake, and the second coil KM2-1 is connected in series to the fourth power supply branch 12. The second relay KA8 is connected in series to the fourth power supply branch 12, and the second relay KA8 is used to control the on-off of the fourth power supply branch 12.

[0077] Similarly, by connecting the second coil KM2-1 of the second contactor KM2 in series with the third power supply branch 15, the startup of the second motor 240 can be based on the second brake having released the second rotor of the second motor 240, thereby reducing the probability of the second motor 240 starting when the second brake holds the second rotor, and further protecting the second motor 240.

[0078] Refer to Figure 3 , in the improvement scheme of the above embodiment, the third power supply branch 15 and the fourth power supply branch 12 are connected in parallel.

[0079] By connecting the third power supply branch 15 and the fourth power supply branch 12 in parallel, they can supply power to the third power supply branch 15 and the fourth power supply branch 12 together, thereby simplifying the circuit structure of the control module 110.

[0080] Refer to Figure 3 , in some embodiments of the present application, the frequency conversion module 120 is further provided with a forward rotation interface 8 and a COM interface 13, and the control module 110 further includes a fifth control branch 01 and a third relay KA3. Both ends of the fifth control branch 01 are electrically connected to the forward rotation interface 8 and the COM interface 13 respectively. The third relay KA is connected in series with the fifth control branch 01. When the third relay KA3 connects the fifth control branch 01, at least one of the first motor 210 and the second motor 240 rotates forward. When the third relay KA3 disconnects the fifth control branch 01, at least one of the first motor 210 and the second motor 240 does not operate.

[0081] By providing the fifth control branch 01 and the third relay KA3, at least one of the first motor 210 and the second motor 240 can be controlled to rotate forward or not operate, and the control is convenient and simple.

[0082] It should be noted that when at least one of the first motor 210 and the second motor 240 does not operate, it only means that the fifth control branch 01 no longer outputs a control signal to at least one of the first motor 210 and the second motor 240, but it does not prevent other control branches from outputting a control signal to at least one of the first motor 210 and the second motor 240.

[0083] Refer to Figure 3 , in some embodiments of the present application, the frequency conversion module 120 is further provided with a reverse rotation interface 9, and the control module 110 further includes a sixth control branch 02 and a fourth relay KA4. Both ends of the sixth control branch 02 are electrically connected to the reverse rotation interface 9 and the COM interface 13 respectively. The fourth relay KA4 is connected in series with the sixth control branch 02. When the fourth relay KA4 connects the sixth control branch 02, at least one of the first motor 210 and the second motor 240 rotates in reverse. When the fourth relay KA4 disconnects the sixth control branch 02, at least one of the first motor 210 and the second motor 240 does not operate.

[0084] By setting the sixth control branch 02 and the fourth relay KA4, at least one of the first motor 210 and the second motor 240 can be controlled to rotate in the reverse direction or not to operate, and the control is convenient and simple.

[0085] Refer to Figure 3 , in some embodiments of the present application, the frequency conversion module 120 further includes a speed change interface 10, and the control module 110 further includes a seventh control branch 03 and a fifth relay KA5. Both ends of the seventh control branch 03 are electrically connected to the speed change interface 10 and the COM interface 13 respectively. The fifth relay KA5 is connected in series to the seventh control branch 03. When the fifth relay KA5 connects the seventh control branch 03, at least one of the first motor 210 and the second motor 240 rotates at a first speed. When the fifth relay KA5 disconnects the seventh control branch 03, at least one of the first motor 210 and the second motor 240 rotates at a second speed, and the second speed is less than the first speed.

[0086] By setting the seventh control branch 03 and the fifth relay KA5, the switching between the second speed and the first speed of at least one of the first motor 210 and the second motor 240 can be realized, and the control mode of the control module 110 is more diverse.

[0087] Refer to Figure 2 , according to the processing platform 200 of the second aspect embodiment of the present application, it includes a motor control circuit, a first motor 210, a first workbench 220, a second workbench 230, and a second motor 240. The first workbench 220 is used to carry workpieces. The second workbench 230 is used to carry workpieces. The first motor 210 is used to drive the first workbench 220 to move in the first direction. The second motor 240 is used to drive the second workbench 230 to move in the first direction.

[0088] The processing platform 200 according to the embodiment of the present application has at least the following beneficial effects: By using the above-mentioned motor control circuit, it is beneficial to simplify the structure of the processing platform 200, and further reduce the cost of the processing platform 200.

[0089] Refer to Figure 4 , according to the processing equipment of the third aspect embodiment of the present application, it includes a processing platform 200 and a processing device 300. The processing device 300 is used to process workpieces.

[0090] The processing equipment according to the embodiment of the present application has at least the following beneficial effects: By using the above-mentioned processing platform 200, it is beneficial to simplify the structure of the processing equipment.

[0091] Specifically, the processing device 300 can be a laser cutting device, a flame cutting device, a plasma cutting device or other devices.

[0092] The embodiments of the present application have been described in detail above with reference to the accompanying drawings. However, the present application is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present application within the scope of knowledge possessed by those of ordinary skill in the art. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

Claims

1. A motor control circuit, used for controlling the working state of a first motor and a second motor, assuming that the first direction is a horizontal direction, the first motor is used for driving a first workbench to move along the first direction, the second motor is used for driving a second workbench to move along the first direction, the first workbench is located above the second workbench, characterized in that: include: A frequency conversion module, provided with a power output interface, a first power supply branch and a second power supply branch, one end of the first power supply branch and the second power supply branch are both electrically connected to the power output interface, the other end of the first power supply branch is used to be electrically connected to the first power input interface of the first motor, and the other end of the second power supply branch is used to be electrically connected to the second power input interface of the second motor; A control module is electrically connected to the frequency conversion module, and the control module is used to send a first control signal, a second control signal and a third control signal; when the frequency conversion module receives the first control signal, the frequency conversion module can drive the first motor to work; when the frequency conversion module receives the second control signal, the frequency conversion module can drive the second motor to work; when the frequency conversion module receives the first control signal and the second control signal at the same time, the frequency conversion module can drive the first motor and the second motor to work together.

2. The motor control circuit according to claim 1, characterized in that: The first power supply branch and the second power supply branch are connected in parallel, the frequency conversion module is provided with a COM interface and a single-channel or double-channel selection interface, and the control module includes: A first control branch, wherein two ends of the first control branch are electrically connected to the COM interface and the single-channel and double-channel selection interface respectively; A first contactor comprises a first normally open main contact and a first normally open auxiliary contact, wherein the first normally open main contact is connected in series to the first power supply branch, and a signal generated when the first normally open main contact is closed is the first control signal; the first normally open auxiliary contact is connected in series to the first control branch; A second contactor comprises a second normally open main contact and a second normally open auxiliary contact, wherein the second normally open main contact is connected in series to the second power supply branch, and a signal generated when the second normally open main contact is closed is the second control signal; and the second normally open auxiliary contact is connected in series to the first control branch; Among them, when the second normally open auxiliary contact and the first normally open auxiliary contact are both closed, the frequency conversion module outputs twice the working current from the power output interface, and the working current is the current required for the first motor or the second motor to work normally.

3. The motor control circuit according to claim 2, characterized in that: Assume that the first holding brake is used to hold or release the first rotor of the first motor, the first contactor further includes a first coil, and the control module further includes: A third power supply branch is used to supply power to the first brake, and the first coil is connected in series to the third power supply branch; The first relay is connected in series to the third power supply branch, and the first relay is used to control the on and off of the third power supply branch.

4. The motor control circuit according to claim 3, characterized in that: Assume that the second brake is used to hold or release the second rotor of the second motor, the second contactor further includes a second coil, and the control module further includes: A fourth power supply branch, used for supplying power to the second brake, the second coil being connected in series to the fourth power supply branch; The second relay is connected in series to the fourth power supply branch, and the second relay is used to control the on and off of the fourth power supply branch.

5. The motor control circuit according to claim 4, characterized in that: The third power supply branch and the fourth power supply branch are connected in parallel.

6. The motor control circuit according to any one of claims 1 to 4, characterized in that: The frequency conversion module is also provided with a forward interface and a COM interface, and the control module further comprises: a fifth control branch, two ends of which are electrically connected to the forward interface and the COM interface respectively; The third relay is connected in series to the fifth control branch; when the third relay is connected to the fifth control branch, at least one of the first motor and the second motor rotates forward; when the third relay is disconnected from the fifth control branch, at least one of the first motor and the second motor does not operate.

7. The motor control circuit according to claim 6, characterized in that: The frequency conversion module is also provided with an inversion interface, and the control module further comprises: a sixth control branch, two ends of which are electrically connected to the inversion interface and the COM interface respectively; A fourth relay is connected in series to the sixth control branch; when the fourth relay is connected to the sixth control branch, at least one of the first motor and the second motor rotates in the opposite direction; when the fourth relay is disconnected from the sixth control branch, at least one of the first motor and the second motor does not operate.

8. The motor control circuit according to claim 7, characterized in that: The frequency conversion module also includes a speed change interface, and the control module also includes: a seventh control branch, two ends of which are electrically connected to the speed change interface and the COM interface respectively; A fifth relay is connected in series to the seventh control branch; when the fifth relay is connected to the seventh control branch, at least one of the first motor and the second motor rotates at a first speed; when the fifth relay is disconnected from the seventh control branch, at least one of the first motor and the second motor rotates at a second speed, and the second speed is less than the first speed.

9. A processing platform, characterized in that: include: The motor control circuit according to any one of claims 1 to 8; A first workbench, used for carrying a workpiece; A second workbench, used for carrying the workpiece; A first motor, used for driving the first workbench to move along the first direction; The second motor is used to drive the second workbench to move along the first direction.

10. Processing equipment, characterized in that, include: The processing platform according to claim 9; A processing device is used for processing the workpiece.

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