Control device of linear motor and conveying equipment

Abstract

The utility model discloses a control device of a linear motor and a conveying device, the control device of the linear motor comprises a magnetic drive control module and an interface expansion module, the magnetic drive control module is connected with the linear motor and the interface expansion module, and the interface expansion module is connected with a plurality of operation devices. The linear motor is connected with a plurality of operation devices through the magnetic drive control module and the interface expansion module, and communicates with more operation devices, so that the production efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of linear motors, and in particular to a control device and a conveying device for a linear motor. Background Art

[0002] In the related art, the clearance between the stator wire and the mover of the linear motor can drive the mover to move along the desired trajectory by controlling the change of the magnetic field between the stator wire and the mover. Therefore, the linear motor can be used for object transportation.

[0003] However, if linear motors are used in automated production scenarios, in addition to the need for linear motor equipment to transport items, there is also a need for linear motors to communicate with operating equipment. However, with the complexity of the automated production process, linear motors need to communicate with more and more operating equipment, and there is an insufficient number of interfaces, which leads to low production efficiency.

[0004] To address the above-mentioned problems, no effective solution has been proposed yet. Utility Model Content

[0005] The embodiments of the present application provide a control device and a conveying device for a linear motor, so as to at least solve the technical problem of low efficiency of automated production provided by the related art.

[0006] According to one aspect of an embodiment of the present application, a control device for a linear motor is provided, comprising a magnetic drive control module and an interface expansion module, wherein: the magnetic drive control module is connected to the linear motor and the interface expansion module respectively, and the interface expansion module is connected to multiple operating devices.

[0007] Optionally, the interface expansion module includes multiple interface sub-modules, at least one of the multiple interface sub-modules is directly connected to the magnetic drive control module, and at least two of the multiple interface sub-modules are directly connected to at least one operating device respectively.

[0008] Optionally, at least two interface sub-modules among the plurality of interface sub-modules are connected in series, and / or at least two interface sub-modules among the plurality of interface sub-modules are connected in parallel.

[0009] Optionally, multiple interface expansion modules are distributed in layers, wherein, in two adjacent layers, the number of interface sub-modules corresponding to the layer close to the magnetic drive control module is not greater than the number of interface sub-modules corresponding to the layer far from the magnetic drive control module.

[0010] Optionally, at least two interface submodules among the plurality of interface submodules are respectively connected to different operating devices; and / or,

[0011] At least two interface submodules of the plurality of interface submodules are connected to at least one identical operating device.

[0012] Optionally, an interface conversion module is further included, which is located between the magnetic drive control module and the interface expansion module and is respectively connected to the magnetic drive control module and at least two interface sub-modules.

[0013] Optionally, the interface sub-module directly connected to the interface conversion module is also connected to at least one interface sub-module to form an interface link, wherein multiple interface sub-modules in the same interface link are respectively connected to different operating devices, and / or the same operating device is respectively connected to at least one interface sub-module in different interface links.

[0014] Optionally, the interface conversion module includes an interface terminal conversion submodule; or, the interface conversion module includes an interface terminal conversion submodule and a corresponding plurality of terminal interface conversion submodules.

[0015] Optionally, the magnetic drive control module is connected to the interface conversion module through a network cable interface, the interface conversion module is connected to the interface expansion module through a network cable interface or a wiring terminal, the interface expansion module is connected to the operating device through a network cable interface or a wiring terminal, and the interface expansion module is connected to the magnetic drive control module through a network cable interface.

[0016] According to another aspect of an embodiment of the present application, a conveying device is also provided, including: a linear motor including a stator wire body and a plurality of movers, the movers are driven by the stator wire body and move along the stator wire body; and a control device as described above.

[0017] In an embodiment of the present application, the magnetic drive control module can be connected to multiple operating devices through the interface expansion module, so that the linear motor can communicate with more operating devices, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0019] Figure 1 is a schematic diagram of an optional control device for a linear motor according to an embodiment of the present application;

[0020] Figure 2 is a schematic diagram of another optional control device for a linear motor according to an embodiment of the present application;

[0021] Figure 3 is a schematic diagram of another optional control device for a linear motor according to an embodiment of the present application;

[0022] Figure 4 is a schematic diagram of another optional control device for a linear motor according to an embodiment of the present application;

[0023] Figure 5 is a schematic diagram of another optional control device for a linear motor according to an embodiment of the present application;

[0024] Figure 6 is a schematic diagram of another optional control device for a linear motor according to an embodiment of the present application;

[0025] Figure 7 is a schematic diagram of another optional control device for a linear motor according to an embodiment of the present application;

[0026] Figure 8 It is a schematic diagram of another optional control device of a linear motor according to an embodiment of the present application. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application.

[0028] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0029] Figure 1 is a schematic diagram of an optional control device for a linear motor according to an embodiment of the present application; Figure 1 The dashed box in the figure can be regarded as a control device for a linear motor. It includes a magnetic drive control module 104 and an interface expansion module 106. The magnetic drive control module 104 is connected to the linear motor 102 and the interface expansion module 106 respectively. The interface expansion module 106 can be connected to multiple operating devices, such as Figure 1As shown, the interface expansion module 106 is connected to an operating device 1 108 and an operating device 2 110 .

[0030] The magnetic drive control module 104 is used to control the linear motor 102 and communicate with the operating device through the interface expansion module 106 .

[0031] In an optional embodiment, the control device of the linear motor may be included in the linear motor, that is, the linear motor 102 may form a whole with the magnetic drive control module 104 and the interface expansion module 106. The control device of the linear motor may also be an independent device, which is connected to the linear motor 102 to achieve communication between the linear motor and the operating device.

[0032] In practical applications, the linear motor 102 may include a stator body ( Figure 1 Not marked in the figure) and mover ( Figure 1 (not indicated in the figure), the stator wire is used to drive the mover by magnetic coupling so that the mover moves along the stator wire. One of the stator wire and the mover is provided with an excitation component, which generates a variable magnetic field when energized, and the other of the stator wire and the mover is provided with a magnetic component, which is used to interact with the variable magnetic field generated by energizing the excitation component to generate an electromagnetic force acting on the mover, so as to drive the mover to move along the stator wire. Among them, the excitation component can be understood as a component based on a coil composition, such as an armature winding, and the magnetic component can be understood as a component with a magnetic field, such as a permanent magnet.

[0033] It should be noted that the shape formed by the stator wire extending along the moving direction of the mover can be a straight line, an arc or a geometric shape formed by a combination of the two. In addition, the shape formed by the stator wire extending along the moving direction of the mover can be a closed shape (such as a circle, a runway shape, a square circle, etc.) or an open shape (such as a straight line, a C shape, an S shape, a U shape, etc.). Figure 1 The shape of the stator wire shown in the figure is only for schematic illustration, and the embodiments of the present application do not impose any specific limitation on the actual shape of the stator wire.

[0034] In an optional embodiment, the magnetic drive control module 104 may obtain motor data of the linear motor 102, and send the motor data to the operating device (such as at least one of the operating device 108 and the operating device 2 110) through the interface expansion module 106, and / or the magnetic drive control module 104 may obtain the operation data of the operating device through the interface expansion module 106. The motor data may be at least one of the stator data and the mover data of the linear motor; the operation data may be at least one of the operation start data, the operation process data and the operation result data of the operating device.

[0035] In an optional embodiment, the interface expansion module 106 can be connected to an operating device, and the interface expansion module 106 is used to expand the number of interfaces of the magnetic drive control module 104 and to transmit data between the magnetic drive control module 104 and multiple operating devices. For example, the motor data of the linear motor can be sent to the connected operating device through the interface expansion module 106, and for another example, the operation data of the connected operating device can be sent to the magnetic drive control module 104 through the interface expansion module 106.

[0036] Specifically, the interface expansion module 106 may have a plurality of first interface units and at least one second interface unit, and the number of the first interface units is greater than the number of the second interface units, each first interface unit may be connected to an operating device, and the second interface unit may be connected to the magnetic drive control module 104. The number of operating devices connected to the interface expansion module 106 does not exceed the number of the first interface units of the interface expansion module 106.

[0037] In an optional embodiment, the various interface units in the interface expansion module 106 can be a unit with input and output functions, the operating device can be connected to the interface expansion module 106 via a transmission line to form an electrical line to transmit data, and the magnetic drive control module 104 can also be connected to the interface expansion module 106 via a transmission line to form an electrical line to transmit data.

[0038] In an optional embodiment, data can be sent between the magnetic drive control module 104 and the interface expansion module 106 via serial transmission. During the data transmission process, a data channel can be used to transmit the motor data one bit at a time, and each data occupies a fixed time length, thereby reducing the number of first interface units of the interface expansion module.

[0039] In an optional implementation, data may be sent between the interface expansion module 106 and an operating device (such as at least one of operating device 108 and operating device 2 110) via parallel transmission. The motor data may be transmitted simultaneously in groups on multiple parallel channels. Multiple data bits may be transmitted simultaneously during the transmission, thereby improving data transmission efficiency.

[0040] As can be seen from the above, through the interface expansion module, the magnetic drive control module can be connected to multiple operating devices, so that the linear motor can communicate with more operating devices, thereby improving production efficiency.

[0041] In an optional embodiment, the interface expansion module may include multiple interface sub-modules, at least one of the multiple interface sub-modules is directly connected to the magnetic drive control module, and at least two of the multiple interface sub-modules are directly connected to at least one operating device respectively.

[0042] Specifically, in the interface extension module, there is an interface sub-module directly connected to the magnetic drive control module. The interface unit of the interface sub-module directly connected to the magnetic drive control module can be regarded as the second interface unit of the interface extension module, which can send data to the magnetic drive control module or receive data from the magnetic drive control module.

[0043] In an optional implementation, in the interface expansion module, there is an interface submodule directly connected to the operating device, and the number of interface submodules directly connected to the operating device is at least two, and the interface unit of the interface submodule directly connected to the operating device can be regarded as the first interface unit of the interface expansion module. Data can be sent to the operating device or received from the operating device.

[0044] Among them, according to the connection mode between multiple interface submodules in the interface extension module, in some cases, the interface submodule may be directly connected to at least another interface submodule. For the convenience of description and understanding, the interface unit used for connecting with other interface submodules in the interface submodule is defined as a third interface unit; and, in other cases, all interface submodules are directly connected to the magnetic drive control module and the operating device. It can be understood that the specific connection mode between multiple interface submodules can refer to the description of the relevant part below, which will not be expanded here.

[0045] As can be seen from the above, the multiple interface sub-modules included in the interface expansion module can enable the magnetic drive control module to be connected to more operating devices, thereby improving communication efficiency and further improving production efficiency.

[0046] In an optional embodiment, at least two of the multiple interface submodules are connected in series, and / or at least two of the multiple interface submodules are connected in parallel. Thus, the connection relationship in the series connection is simple and easy to implement, and the number of interfaces of the magnetic drive control module is small; while the parallel connection can reduce the number of interface submodules passing through during data transmission, reduce the risk of data loss, and improve transmission efficiency.

[0047] Figure 2 is a schematic diagram of another optional linear motor control device according to an embodiment of the present application; Figure 2As shown, the dotted box can be regarded as an interface extension module, wherein, for ease of description and understanding, only interface submodules 202 and 204 are shown in this example, but in actual applications, the interface extension module may include more interface submodules. The connection between the magnetic drive control module 104 and the interface extension module may be that the magnetic drive control module 104 and the interface submodule 1 202 are connected, in the interface extension module, the interface submodule 1 202 and the interface submodule 2 204 are connected, and the interface submodule 2 204 may also be connected to other interface submodules, thereby, at least two interface submodules in the interface extension module are connected in series.

[0048] Each interface submodule can be connected to one or more operating devices. Figure 2 As shown, interface submodule one 202 can be connected to operating device three 206 so that the magnetic drive control module 104 can communicate with operating device three 206, and interface submodule two 204 can be connected to operating device four 208 so that the magnetic drive control module 104 can communicate with operating device four 208.

[0049] Figure 3 is a schematic diagram of another optional control device for a linear motor according to an embodiment of the present application; Figure 3 As shown, the dotted box can be regarded as an interface expansion module, wherein, for the sake of ease of description and understanding, only interface submodules 302 and 304 are shown in this example, but in actual applications, the interface expansion module may include more interface submodules. The connection between the magnetic drive control module 104 and the interface expansion module may be that the magnetic drive control module 104 is connected to multiple interface submodules, and the multiple interface submodules are connected in parallel, wherein each interface submodule is connected to at least one operating device. For example, Figure 3 As shown, interface submodule three 302 can be connected to operating device five 306 so that the magnetic drive control module 104 can communicate with operating device five 306, and interface submodule four 304 can be connected to operating device six 308 so that the magnetic drive control module 104 can communicate with operating device six 308.

[0050] It is understandable that the multiple interface submodules may be connected in parallel or in series, or in a combination of parallel and series. This embodiment of the present application does not impose any specific limitation on this.

[0051] In an optional embodiment, multiple interface sub-modules are distributed in levels, wherein, in two adjacent levels, the number of interface sub-modules corresponding to the level close to the magnetic drive control module is not greater than the number of interface sub-modules corresponding to the level far from the magnetic drive control module.

[0052] Figure 4 is a schematic diagram of another optional control device for a linear motor according to an embodiment of the present application; Figure 4 As shown, the dotted box can be regarded as an interface expansion module, wherein, for ease of description and understanding, only two levels and interface submodules 402, 404 and 406 are shown in this example, but, in practical applications, more levels and more interface submodules may be included in the interface expansion module. The magnetic drive control module 104 can be connected to the interface submodule five 402 of the first level, and the interface submodule five 402 of the first level can be connected to the interface submodule six 404 and the interface submodule seven 406 of the next level (i.e., the second level) respectively. Each interface submodule can be connected to one or more operating devices, for example, the interface submodule five 402 of the first level can be connected to at least one operating device (not shown in the figure). The interface submodule six 404 can be connected to the operating device seven 408, and the interface submodule seven 406 can be connected to the operating device eight 410.

[0053] It is understandable that in the hierarchical distribution scheme, there may be one or more interface submodules directly connected to the magnetic drive control module. The case where there is one interface submodule directly connected to the magnetic drive control module can be referred to. Figure 4 If there are multiple interface submodules directly connected to the magnetic drive control module, please refer to Figure 5 , wherein the magnetic drive control module 104 is connected to the interface submodule five 402 and the interface submodule eight 502 respectively, and the interface submodule eight 502 can be connected to at least one operating device (only the operating device 504 is shown in the figure). For other connection relationships, please refer to Figure 4 The relevant description will not be repeated here.

[0054] Thus, by connecting multiple levels of interface sub-units, the magnetic drive control module can communicate with more operating devices, thereby improving communication efficiency. In an optional embodiment, at least two of the multiple interface sub-modules are respectively connected to different operating devices; and / or at least two of the multiple interface sub-modules are connected to at least one identical operating device.

[0055] It is understandable that for the scheme that at least two of the multiple interface submodules are respectively connected to different operating devices, reference can be made to the relevant drawings and descriptions, which will not be repeated here. For the scheme that at least two of the multiple interface submodules are connected to at least one identical operating device, since in actual applications, the different interface units included in the magnetic drive control module can output different types of motor data, different types of motor data can be transmitted by connecting different interface submodules to different interface units of the magnetic drive control module, thereby providing different types of motor data for the operating device. In addition, for the operating device connected to multiple interface submodules, it can select one of the interface submodules for data transmission, or it can select at least two interface submodules for data transmission. On the one hand, it can ensure that the magnetic drive control module can obtain the operating data and improve the data transmission efficiency. On the other hand, the magnetic drive control module can use the operating data of the same operating device obtained by different interface submodules to perform data verification and improve the accuracy of the data.

[0056] Figure 6 is a schematic diagram of another optional control device for a linear motor according to an embodiment of the present application; Figure 6 As shown, the dotted box can be regarded as an interface expansion module, wherein, for ease of description and understanding, only two interface submodules 602 and 604 are shown in this example, but, in practical applications, more interface submodules may be included in the interface expansion module. The output end of the magnetic drive control module 104 may be connected to the input end of the interface submodule nine 602 and the input end of the interface submodule ten 604. The interface submodule nine 602 may send the motor data of the first type, and the interface submodule ten 604 may send the motor data of the second type (such as the stator data and the mover data may be sent respectively through different interface submodules, or the motion data and position data of the mover in the mover data may be sent respectively through different interface submodules, etc.). The output end of the interface submodule nine 602 may be connected to the input end of the operating device nine 606 and the operating device ten 608, and the motor data of the first type may be sent to the operating device nine 606 and the operating device ten 608. The output terminal of the interface submodule ten 604 can be connected to the input terminals of the operating device nine 606 and the operating device ten 608 to send the second type of motor data to the operating device nine 606 and the operating device ten 608.

[0057] In an optional implementation, the interface expansion module and the operating device may be connected via a network cable interface or a wiring terminal, and the interface expansion module and the magnetic drive control module may be connected via a network cable interface, wherein the network cable interface may be an RJ48 network cable interface, an RJ45 network cable interface, or the like.

[0058] In an optional embodiment, the control device of the linear motor may further include an interface conversion module, which is located between the magnetic drive control module and the interface extension module, and is respectively connected to the magnetic drive control module and at least two interface sub-modules. The interface conversion module is used to split the motor data sent by the magnetic drive control module into different types of sub-data and send them to the corresponding interface sub-modules, and / or summarize the operation data from different interface sub-modules and send them to the magnetic drive control module.

[0059] Specifically, the interface conversion module may include an interface terminal conversion submodule; or, the interface conversion module includes an interface terminal conversion submodule and a plurality of correspondingly connected terminal interface conversion submodules. According to the submodules specifically included in the interface conversion module, the magnetic drive control module and the interface conversion module may be connected via a network cable interface, and the interface conversion module and the interface extension module may be connected via a network cable interface or a wiring terminal. Among them, the network cable interface may be an RJ48 network cable interface, an RJ45 network cable interface, etc., and the interface terminal conversion submodule and the terminal interface conversion submodule may respectively include an interface adapter terminal head, such as an RJ48 adapter terminal head, so as to realize the conversion between the interface and the terminal.

[0060] Based on this, the interface conversion module can convert the motor data transmitted in the interface form into the motor data transmitted in the port form, so that the motor data transmitted in the terminal form can be split into different types of sub-data through different pin lines. Accordingly, the interface conversion module can convert the operation data transmitted in the interface form into the operation data transmitted in the terminal form, or the interface conversion module directly obtains the operation data transmitted in the terminal form, thereby converting the operation data from different interface sub-modules into data transmitted in the interface form and sending it to the magnetic drive control module.

[0061] Figure 7 is a schematic diagram of another optional control device for a linear motor according to an embodiment of the present application; Figure 7As shown, the dotted box can be regarded as an interface expansion module, wherein, for ease of description and understanding, only two interface submodules 704 and 706 are shown in this example, but, in practical applications, more interface submodules can be included in the interface expansion module. The output end of the magnetic drive control module 104 is connected to the input end of the interface conversion module 702, and the magnetic drive control module 104 can send the motor data to the interface conversion module 702, and the interface conversion module 702 can split or convert the motor data into different types of sub-data. The output end of the interface conversion module 702 can be connected to the input end of the interface submodule eleven 704 and the interface submodule twelve 706, and the interface conversion module 702 can send the different types of sub-data obtained after splitting or converting to the interface submodule that sends the specified sub-data. For example, the interface submodule 11 704 can send the subdata of the first category, and the interface submodule 12 706 can send the subdata of the second category, then the interface conversion module 702 can send the subdata of the first category to the interface submodule 11 704, and send the subdata of the first category to the operating device 11 708 and the operating device 12 710 through the interface submodule 11 704. The interface conversion module 702 can send the subdata of the second category to the interface submodule 12 706, and send the subdata of the second category to the operating device 11 708 and the operating device 12 710 through the interface submodule 12 706.

[0062] In an optional embodiment, the interface sub-module directly connected to the interface conversion module is also connected to at least one of the interface sub-modules to form an interface link, wherein multiple interface sub-modules in the same interface link are respectively connected to different operating devices, and / or the same operating device is respectively connected to at least one interface sub-module in different interface links.

[0063] In an optional implementation, the interface submodules that send the same type of sub-data can be connected to form an interface link, and the interface link can be a plurality of interface submodules connected in series, in parallel, or in layers. In each interface link, there is an interface submodule connected to the magnetic drive control module or the interface conversion module, and in each interface link, there is at least one interface submodule connected to the operating device. In different interface links, the interface submodules connected to the same operating device can have a corresponding relationship, that is, they can each send the corresponding type of sub-data to the same operating device.

[0064] Figure 8 is a schematic diagram of another optional control device for a linear motor according to an embodiment of the present application; Figure 8As shown, the dotted box can be regarded as an interface expansion module, wherein, for ease of description and understanding, only four interface submodules 804, 806, 808 and 810 are shown in this example, but, in practical applications, more interface submodules can be included in the interface expansion module. Interface submodule 13 804 and interface submodule 15 808 and the interface submodule connected behind can form an interface link (subsequently referred to as the first interface submodule link), interface submodule 14 806 and interface submodule 16 810 and the interface submodule connected behind can form another interface link (subsequently referred to as the second interface submodule link). The output end of the magnetic drive control module 104 is connected to the input end of the interface conversion module 802. The output end of the interface conversion module 802 can be connected to the input end of the interface submodule 13 804 and the interface submodule 14 806, and the interface conversion module 802 can send the subdata of the first kind after splitting or converting to the interface submodule 13 804, and send the subdata of the second kind to the interface submodule 14 806. The interface submodule 13 804 can send the subdata of the first category to the operating device 13 812, and the interface submodule 14 806 can send the subdata of the second category to the operating device 13 812, so that the operating device 13 812 can obtain different types of subdata. The interface submodule 13 804 can also send the subdata of the first category to other interface submodules through the first interface submodule link, such as the interface submodule 13 804 can send the subdata of the first category to the interface submodule 15 808. Similarly, the interface submodule 14 806 can send the subdata of the second category to the interface submodule 16 810. The interface submodule 15 808 can send the subdata of the first category to the operating device 14 814, and the interface submodule 16 810 can send the subdata of the second category to the operating device 14 814.

[0065] According to another aspect of the embodiments of the present application, a conveying device is also provided, which may include: a linear motor and a control device for controlling the linear motor, wherein the linear motor includes a stator wire body and a plurality of movers, and the movers are driven by the stator wire body and move along the stator wire body; the specific implementation method of the control device may refer to any of the above embodiments and will not be repeated here.

[0066] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "up", "down", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0067] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A control device for a linear motor, characterized in that: It includes a magnetic drive control module and an interface expansion module, wherein: The magnetic drive control module is connected to the linear motor and the interface expansion module respectively, the interface expansion module is connected to a plurality of operating devices, and the magnetic drive control module is used to control the linear motor and communicate with the operating devices through the interface expansion module.

2. The control device of the linear motor according to claim 1, characterized in that: The interface expansion module includes a plurality of interface sub-modules, at least one of the plurality of interface sub-modules is directly connected to the magnetic drive control module, and at least two of the plurality of interface sub-modules are directly connected to at least one operating device respectively.

3. The control device of the linear motor according to claim 2, characterized in that: At least two of the multiple interface sub-modules are connected in series, and / or at least two of the multiple interface sub-modules are connected in parallel.

4. The control device of the linear motor according to claim 2, characterized in that: The multiple interface sub-modules are distributed in layers, wherein, in two adjacent layers, the number of interface sub-modules corresponding to the layer close to the magnetic drive control module is not greater than the number of interface sub-modules corresponding to the layer far from the magnetic drive control module.

5. The control device for a linear motor according to any one of claims 2 to 4, characterized in that: At least two of the multiple interface submodules are connected to different operating devices respectively; and / or at least two of the multiple interface submodules are connected to at least one same operating device.

6. The control device for a linear motor according to any one of claims 2 to 4, characterized in that: It also includes an interface conversion module, which is located between the magnetic drive control module and the interface expansion module and is respectively connected to the magnetic drive control module and at least two interface sub-modules.

7. The control device for the linear motor according to claim 6, characterized in that: The interface sub-module directly connected to the interface conversion module is also connected to at least one of the interface sub-modules to form an interface link, wherein multiple interface sub-modules in the same interface link are respectively connected to different operating devices, and / or the same operating device is respectively connected to at least one interface sub-module in different interface links.

8. The control device for the linear motor according to claim 7, characterized in that: The interface conversion module includes an interface terminal conversion submodule; or, the interface conversion module includes an interface terminal conversion submodule and a plurality of correspondingly connected terminal interface conversion submodules.

9. The control device for a linear motor according to claim 7, characterized in that: The magnetic drive control module is connected to the interface conversion module via a network cable interface, and the interface conversion module is connected to the interface expansion module via a network cable interface or a wiring terminal.

10. The control device for a linear motor according to any one of claims 1 to 4, characterized in that: The interface expansion module is connected to the operating device via a network cable interface or a wiring terminal, and the interface expansion module is connected to the magnetic drive control module via a network cable interface.

11. A conveying device, characterized in that: include: A linear motor comprises a stator body and a plurality of movers, wherein the movers are driven by the stator body and move along the stator body; And a control device as described in any one of claims 1 to 10.

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