Production line practical training system assembling module controlled by PLC

Abstract

The utility model discloses a production line practical training system assembling module controlled by a PLC, which comprises a gantry material taking device and a rotating disc assembly, the rotating disc assembly is provided with a plurality of placing bodies, and the gantry material taking device can place bases, intermediates or upper covers on qualified product placing bodies on the placing body at the left part of the rotating disc assembly for assembling. The turntable assembly can rotate to drive the assembled assembly body to move to the right part of the turntable assembly; the device can independently complete material assembly demonstration, and can also be matched with the discharging module, the color separation module, the visual detection module and the material storage module to simulate a PLC programming technology for completing production procedures such as material warehouse-out, color separation, conveying, carrying, sorting, assembling and warehouse-in.

Description

TECHNICAL FIELD

[0001] The utility model relates to teaching equipment technical field, concretely relates to a production line practical training system assembly module of PLC control. BACKGROUND

[0002] With the development of intelligent manufacturing technology, automatic control technology has also developed by leaps and bounds, and mechanical and electrical, intelligent manufacturing majors learn mechanical design, PLC programming, servo motor, frequency converter, pneumatic control technology, digital twin and virtual debugging technology, etc. In the automation engineering of various industries, these technologies are widely used. The teaching of automation related majors in ordinary universities, vocational colleges, training institutions and the like all need to set up different degrees of experimental or training practical teaching links to learn and master, and all need corresponding experimental and training devices to realize related teaching tasks. The current experimental device can only demonstrate independently and cannot cooperate with the remaining mechanisms, resulting in poor overall teaching and teaching effect. UTILITARY MODEL

[0003] In view of the defects in the prior art, the utility model provides a production line practical training system assembly module of PLC control, which can independently complete material assembly demonstration, and can also cooperate with the discharge module, the color separation module, the visual detection module and the material storage module to simulate the PLC programming technology of material warehouse-out, color separation, conveying, handling, sorting, assembly and warehousing and the like production processes.

[0004] A production line practical training system assembly module of PLC control, comprising a gantry material taking device and a turntable assembly, a plurality of placement bodies are arranged on the turntable assembly, the gantry material taking device can place the base, the middle body or the upper cover on the qualified product placement body on the placement body on the left part of the turntable assembly for assembly, and the turntable assembly can drive the assembled assembly to move to the right part of the turntable assembly.

[0005] Preferably, the turntable assembly comprises a motor and a turntable, the turntable is connected with the output shaft of the motor, a plurality of placement bodies are arranged on the top wall of the turntable, and the plurality of placement bodies are distributed along the circumference of the turntable axis.

[0006] Preferably, the plurality of placement bodies are uniformly distributed along the circumference of the turntable axis.

[0007] Preferably, the placement body comprises a second placement plate and two second side plates, the two second side plates are connected with the second placement plate, and the base, the middle body or the upper cover can be placed on the second placement plate and in contact with the inner walls of the two second side plates.

[0008] Preferably, the inner walls of the two second side plates are arc surfaces.

[0009] Preferably, the gantry material taking device comprises a second support frame, a second left-right movement module is arranged on the second support frame, a movement part of the second left-right movement module can move left and right, a second up-down movement module is arranged on the movement part of the second left-right movement module, a movement part of the second up-down movement module can move up and down, and a second clamping mechanism is arranged on the movement part of the second up-down movement module.

[0010] The beneficial effects of the utility model lie in: in the technical scheme, through cooperation of the gantry material taking device and the rotary disc assembly, a plurality of placing bodies are arranged on the rotary disc assembly, during assembly, the gantry material taking device sequentially places the base, the middle body or the upper cover on the placing bodies to assemble, material assembly demonstration is completed, and PLC programming technology of production processes such as material delivery, color separation, conveying, carrying, sorting, assembly and warehousing can also be simulated by cooperating with the delivery module, the color separation module, the visual detection module and the material storage module. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the specific embodiments of the utility model or the technical scheme in the prior art, the drawings needed to be used in the specific embodiments or the prior art description will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, various elements or parts are not necessarily drawn according to the actual scale.

[0012] Figure 1 It is an exploded structure schematic view of the assembly body in the embodiment;

[0013] Figure 2 It is a whole structure schematic view of the practical training system in the embodiment;

[0014] Figure 3 It is a whole structure schematic view of the delivery module in the embodiment;

[0015] Figure 4 It is a whole structure schematic view of the delivery assembly without the placing cylinder in the embodiment;

[0016] Figure 5 It is a whole structure schematic view of the color separation module in the embodiment;

[0017] Figure 6 It is a whole structure schematic view of the qualified product placing body in the embodiment;

[0018] Figure 7 It is a whole structure schematic view of the assembly module in the embodiment;

[0019] Figure 8 It is a whole structure schematic view of the visual detection module in the embodiment;

[0020] Figure 9 It is a whole structure schematic view of the material storage module in the embodiment.

[0021] In the drawings, 1- machine table, 2- discharge module, 3- color separation module, 4- assembly module, 5- visual inspection module, 6- material warehouse module,

[0022] 101- base, 102- intermediate body, 103- upper cover, 104- lower groove, 105- middle plate, 106- lower protrusion, 107- upper protrusion,

[0023] 201- first belt conveyor, 202- discharge assembly, 203- placing cylinder, 204- bottom plate, 205- pushing device, 206- first groove, 207- second groove, 208- push plate, 209- discharge port, 210- first baffle, 211- first distance sensor,

[0024] 301- parallel material taking module, 302- storage rack, 303- color sensor, 304- qualified product placing body, 305- unqualified product placing area, 306- fixing plate, 307- fixing column, 308- mounting plate, 309- first placing plate, 310- first side plate, 311- limiting column, 312- first support frame, 313- suction cup,

[0025] 401- gantry material taking device, 402- turntable assembly, 403- placing body, 404- motor, 405- turntable, 406- second support frame,

[0026] 501- second belt conveyor, 502- visual inspection device, 503- support column, 504- visual camera, 505- second distance sensor, 506- second baffle, 507- third distance sensor,

[0027] 601- palletizer, 602- storage rack, 603- mounting column, 604- bearing plate, 605- placing groove, 606- distance sensor. DETAILED DESCRIPTION

[0028] The embodiments of the technical scheme of the utility model will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the utility model, therefore only as an example, and cannot limit the protection scope of the utility model.

[0029] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application should be the usual meaning understood by the technical personnel in the field to which the utility model belongs.

[0030] Example 1

[0031] As Figures 1-9As shown, this embodiment provides a training system for an electrical automation production line based on PLC control, including a machine base 1, on which a material discharge module 2, a color sorting module 3, an assembly module 4, a vision inspection module 5, and a material storage module 6 are provided;

[0032] The discharge module 2 includes a first belt conveyor 201 and three discharge components 202. The three discharge components 202 can respectively push the base 101, intermediate body 102 and top cover 103 of the assembly onto the belt of the first belt conveyor 201. The belt movement of the first belt conveyor 201 can drive the base 101, intermediate body 102 and top cover 103 to the right side of the first belt conveyor 201.

[0033] The color separation module 3 includes a parallel material picking module 301 and a storage rack 302. The storage rack 302 is provided with a qualified product placement body 304 and an unqualified product placement area 305. The storage rack 302 is provided with a color sensor 303, which can identify the color of the base 101, the intermediate body 102 and the top cover 103. The parallel material picking module 301 can place the base 101, the intermediate body 102 and the top cover 103 on the first belt conveyor 201 into the qualified product placement body 304 or the unqualified product placement area 305 of the storage rack 302.

[0034] The assembly module 4 includes a gantry material handling device 401 and a turntable assembly 402. The turntable assembly 402 is provided with multiple placement bodies 403. The gantry material handling device 401 can place the base 101, intermediate body 102 or top cover 103 on the qualified product placement body 304 onto the placement body 403 on the left side of the turntable assembly 402 for assembly. The turntable assembly 402 can rotate to drive the assembled assembly to the right side of the turntable assembly 402.

[0035] The visual inspection module 5 includes a second belt conveyor 501 and a visual inspection device 502. The gantry material handling device 401 can place the assembly on the turntable assembly 402 onto the belt of the second belt conveyor 501. The second belt conveyor 501 can drive the assembly to move to below the visual inspection device 502. The visual inspection device 502 can identify the letters on the top cover 103 of the assembly.

[0036] The material storage module 6 includes a palletizer 601 and a storage rack 602. The palletizer 601 can transport the assembly on the second belt conveyor 501 to the storage rack 602.

[0037] Specifically, in this embodiment, the assembly to be assembled includes a base 101, an intermediate body 102, and a top cover 103. The top wall of the base 101 has a lower groove 104. The intermediate body 102 includes a middle plate 105. The bottom wall of the middle plate 105 is connected to a lower protrusion 106, and the top wall of the middle plate 105 is connected to an upper protrusion 107. The bottom wall of the top cover 103 has an upper groove. During assembly, the lower protrusion 106 is placed in the lower groove 104, the top cover 103 is placed on the intermediate body 102, and the upper protrusion 107 enters the upper groove. The top wall of the top cover 103 is provided with letters, the meaning of which can be defined in the control system.

[0038] The specific workflow is as follows: The first discharge component 202 first pushes the base 101 onto the first belt conveyor 201. The first belt conveyor 201 starts and drives the base 101 to move to the right side of the first belt conveyor 201. Then, the parallel material picking module 301 removes the base 101 and moves it above the storage rack 302. During this process, the color sensor 303 can identify the color of the base 101. If the color meets the requirements, the parallel material picking module places the base 101 on the qualified product placement body 304. If it does not meet the requirements, the base 101 is placed on the unqualified product placement area 305. Then, the gantry picking device 401 places the base 101 on the qualified product placement body 304 onto the leftmost placement body 403 on the turntable component 402.

[0039] The second discharge component 202 pushes the intermediate body 102 onto the first belt conveyor 201 and transports it to the right side of the first belt conveyor 201. The parallel material handling module 301 places the intermediate body 102, which has been identified by the color sensor 303, into the qualified product placement body 304 or the unqualified product placement area 305. The gantry material handling device 401 removes the intermediate body 102 from the qualified product placement body 304 and places it onto the base 101 located on the placement body 403.

[0040] The third discharge component 202 pushes the top cover 103 onto the first belt conveyor 201 and transports it to the right side of the first belt conveyor 201. The parallel material handling module 301 places the top cover 103, which has been identified by the color sensor 303, into the qualified product placement body 304 or the unqualified product placement area 305. The gantry material handling device 401 removes the top cover 103 from the qualified product placement body 304 and places it onto the intermediate body 102 located on the placement body 403. In this way, the base 101, intermediate body 102 and top cover 103 that meet the color requirements are assembled into a complete assembly.

[0041] The turntable assembly 402 rotates, causing the assembly to move to the right side of the turntable assembly 402. The gantry material handling device 401 clamps the assembly onto the second belt conveyor 501. The second belt conveyor 501 transports the assembly to below the vision inspection device 502. The vision inspection device 502 identifies the letters on the top cover 103 and makes a judgment based on the definition of the letters. Then, the second belt conveyor 501 continues to transport the assembly to the right side of the second belt conveyor 501. The palletizer 601 places the assembly in the corresponding position on the storage rack 602 according to the conclusion of the vision inspection device 502. This achieves assembly unloading, color sorting, assembly, and storage.

[0042] In this embodiment, the control system uses mainstream Siemens PLCs on the market, including Siemens 200smart / 1200 / 1500 PLCs. Through learning on this platform, one can master the application of programming technology for mainstream Siemens PLC products.

[0043] In this embodiment, components within multiple modules, such as the first belt conveyor 201, the second belt conveyor 501, the turntable assembly 402, the parallel material handling module 301, the gantry material handling device 401, and the palletizer 601, can incorporate commonly used motor types in factories, including ordinary three-phase asynchronous motors, stepper motors, and servo motors. Through learning on this platform, one can master the control methods of common motors in actual factories.

[0044] In this embodiment, various electrical control components and mechanical devices are integrated on the platform, which makes it easier for trainees to recognize various components and mechanical actuators, as well as understand the connections between various control components and the logical relationship between the electrical control part and the mechanical actuator.

[0045] In this embodiment, based on the actual production process and technological layout, the PLC programming technology for production processes such as material outbound, color sorting, conveying, handling, picking, assembly, and warehousing can be completed through learning on this platform.

[0046] This embodiment consists of multiple modules, which can be relatively independent or connected to form a production line for integrated control. It is beneficial for trainees to gradually master the relevant mechanical design technology, electrical control principles and PLC programming technology, as well as digital twin and virtual debugging technology from easy to difficult. It is very suitable for students majoring in mechatronics in secondary vocational schools, higher vocational colleges and vocational undergraduate colleges. It can also be used as a learning and assessment device for electricians and PLC-related jobs in vocational training schools.

[0047] Example 2

[0048] This embodiment further defines the previous embodiment. The discharge assembly 202 in this embodiment includes a placement cylinder 203, a bottom plate 204, and a pushing device 205. The top wall of the bottom plate 204 has a first groove 206, and the bottom wall of the first groove 206 has a second groove 207. The placement cylinder 203 is placed in the first groove 206. The front wall of the second groove 207 has a discharge port 209, and the rear wall of the second groove 207 has a through hole. The output shaft of the pushing device 205 is connected to a push plate 208, which can pass through the through hole.

[0049] Specifically, the base 101, intermediate body 102, and top cover 103 are respectively placed in the placement cylinders 203 of the three discharge components 202. For ease of description, the base 101, intermediate body 102, and top cover 103 are all referred to as materials. The bottom material falls into the second groove 207. Each discharge component 202 contains 9 materials, which include three colors. When the materials are discharged, the push device 205 is activated. The push device 205 drives the push plate 208 to move. The push plate 208 pushes the materials from the second groove 207 onto the belt of the first belt conveyor 201.

[0050] In this embodiment, the pushing device 205 is a cylinder. The use of a cylinder in the pushing device 205 in this embodiment facilitates control by the control system.

[0051] In this embodiment, the front wall of the pusher plate 208 is curved. The curved front wall of the pusher plate 208 facilitates the pushing of material out of the second groove 207.

[0052] In this embodiment, two first baffles 210 are installed on the top wall of the right side of the first belt conveyor 201. The two first baffles 210 are distributed in the front-to-back direction, and the distance between the two first baffles 210 gradually decreases from left to right. The base 101, intermediate body 102, or top cover 103 can contact and fix with the inner sidewalls of the two first baffles 210. In this embodiment, the two first baffles 210 are provided so that the position of the material is fixed after it comes into contact with the two first baffles 210, which facilitates the parallel material picking module 301 to pick up the material from the first belt conveyor 201. In this embodiment, the inner sidewall of the first baffles 210 is defined by the area between the two first baffles 210.

[0053] In this embodiment, a first distance sensor 211 is provided on the right side of the first belt conveyor 201. The first distance sensor 211 can identify the position of the base 101, the intermediate body 102, or the top cover 103. In this embodiment, the first distance sensor 211 is provided so that when the material is in contact with the inner wall of the two first baffles 210 at a fixed position, the first distance sensor 211 can identify the material and transmit the information to the control system. The control system then controls the parallel material handling module 301 to pick up the material.

[0054] Example 3

[0055] This embodiment further defines the storage rack 302 based on embodiment 1. In this embodiment, the storage rack 302 includes a fixed plate 306, a fixed column 307 is connected to the fixed plate 306, a qualified product placement body 304 is installed on the top wall of the fixed plate 306, and an unqualified product placement area 305 is set on the top wall of the fixed plate 306.

[0056] In this embodiment, the qualified product placement body 304 includes a first placement plate 309 and two first side plates 310. The two first side plates 310 are connected to the first placement plate 309. The base 101, the intermediate body 102 or the top cover 103 can be placed on the first placement plate 309 and contact the inner walls of the two first side plates 310.

[0057] In this embodiment, a qualified product placement area 304 and an unqualified product placement area 305 are provided on the fixed plate 306 to classify products that meet color requirements and unqualified products.

[0058] In this embodiment, the inner wall of the first side plate 310 is curved. The curved inner wall of the first side plate 310 facilitates the placement of the base 101, the intermediate body 102, or the top cover 103.

[0059] In this embodiment, the fixing plate 306 is provided with two rows of limiting posts 311. The two rows of limiting posts 311 form a defective product placement area 305. The base 101, intermediate body 102, or top cover 103 can be placed between four adjacent limiting posts 311. In this embodiment, two rows of limiting posts 311 are provided, with four limiting posts 311 in each row. The four adjacent limiting posts 311 form a defective product placement area 305, which enables the placement of base 101, intermediate body 102, or top cover 103 with unqualified color.

[0060] In this embodiment, two fixing columns 307 are used. The use of two fixing columns 307 in this embodiment ensures the stability of the support for the fixing plate 306.

[0061] In this embodiment, the bottom end of the fixing column 307 is connected to the mounting plate 308, which is mounted on the machine base 1. The fixing column 307 and the mounting plate 308 are connected, and the mounting plate 308 is mounted on the machine base 1, thus enabling the device to be mounted on the machine base 1.

[0062] In this embodiment, the parallel material handling module 301 includes a first support frame 312, on which a first left-right movement module is provided. The moving part of the first left-right movement module can move left and right. The moving part of the first left-right movement module is provided with a first up-down movement module. The moving part of the first up-down movement module can move up and down. A suction cup 313 is installed on the moving part of the first up-down movement module.

[0063] In this embodiment, a suction cup 313 is provided. When moving the base 101, the intermediate body 102, or the top cover 103, the suction cup 313 is used to hold the base 101, the intermediate body 102, or the top cover 103. Then, the first left-right motion module and the first up-down motion module cooperate to complete the movement of the base 101, the intermediate body 102, or the top cover 103.

[0064] Example 4

[0065] This embodiment further defines the features based on Embodiment 1. In this embodiment, the turntable assembly 402 includes a motor 404 and a turntable 405. The turntable 405 is connected to the output shaft of the motor 404. A plurality of placement bodies 403 are disposed on the top wall of the turntable 405 and are distributed circumferentially along the axis of the turntable 405.

[0066] In this embodiment, the turntable assembly 402 includes a motor 404 and a turntable 405. In use, the motor 404 drives the turntable 405 to rotate. During assembly, the base 101, intermediate body 102 or top cover 103 are placed on the leftmost placement body 403 on the turntable 405 for assembly. After assembly, the motor 404 drives the turntable 405 to rotate, so that the assembly moves to the right side of the turntable 405, and then the gantry material handling device 401 takes away the assembly.

[0067] In this embodiment, multiple placement bodies 403 are evenly distributed circumferentially along the axis of the turntable 405.

[0068] In this embodiment, the placement body 403 includes a second placement plate and two second side plates. The two second side plates are connected to the second placement plate. The base 101, intermediate body 102 or top cover 103 can be placed on the second placement plate and contact the inner walls of the two second side plates, so as to realize the assembly of the base 101, intermediate body 102 or top cover 103 on the placement body 403.

[0069] In this embodiment, the inner walls of the two second side plates are curved.

[0070] In this embodiment, the gantry material handling device 401 includes a second support frame 406. A second left-right motion module is provided on the second support frame 406. The moving part of the second left-right motion module can move left and right. A second up-down motion module is provided on the moving part of the second left-right motion module. The moving part of the second up-down motion module can move up and down. A second clamping mechanism is provided on the moving part of the second up-down motion module.

[0071] In this embodiment, since the base 101, intermediate body 102 and top cover 103 are assembled, the assembly cannot be removed by suction cup. In this embodiment, the assembly is clamped by a second clamping mechanism, and the assembly is moved by the cooperation of the second left and right movement module and the second up and down movement module.

[0072] Example 5

[0073] This embodiment further defines the visual detection device 502 based on embodiment 1. In this embodiment, the visual detection device 502 includes a support column 503, and a visual camera 504 is installed on the support column 503.

[0074] In this embodiment, a second distance sensor 505 is provided on the second belt conveyor 501. When the second distance sensor 505 detects the assembly, the assembly is located directly below the vision camera 504.

[0075] In this embodiment, a second distance sensor 505 is provided. When the second belt conveyor 501 drives the assembly to move until the second distance sensor 505 detects the assembly, the control system controls the second belt conveyor 501 to stop moving. At this time, the vision detection device 502 can take pictures of the assembly and identify the letters on the top cover 103 of the assembly.

[0076] In this embodiment, two second baffles 506 are installed on the top wall of the right side of the second belt conveyor 501. The two second baffles 506 are distributed in the front-to-back direction, and the distance between the two second baffles 506 gradually decreases from left to right. The base 101, intermediate body 102, or top cover 103 can contact and fix with the inner sidewalls of the two second baffles 506. In this embodiment, the two second baffles 506 are provided so that the position of the material is fixed after it comes into contact with the two second baffles 506, which makes it easy for the palletizer 601 to remove the material from the second belt conveyor 501. In this embodiment, the inner sidewalls of the two second baffles 506 are defined by the area between the two second baffles 506.

[0077] In this embodiment, a third distance sensor 507 is provided on the right side of the second belt conveyor 501. The third distance sensor 507 can identify the position of the base 101, the intermediate body 102 or the top cover 103.

[0078] In this embodiment, a third distance sensor 507 is provided. When the assembly is in contact with the inner wall of the two second baffles 506, the third distance sensor 507 can identify the assembly and transmit the information to the control system. The control system then controls the palletizer 601 to remove the assembly.

[0079] Example 6

[0080] This embodiment further defines the storage rack 602 in this embodiment, which includes two mounting columns 603 and multiple support plates 604 installed between the two mounting columns 603. The multiple support plates 604 are longitudinally distributed and multiple placement slots 605 are provided on the support plates 604.

[0081] In this embodiment, the support plate 604 is equipped with multiple fourth distance sensors 606. These fourth distance sensors can detect assemblies placed in the placement slots 605, and each fourth distance sensor 606 corresponds one-to-one with a placement slot 605. In this embodiment, the fourth distance sensors 606 are configured so that after an assembly is placed in a placement slot 605, the fourth distance sensors 606 can identify the corresponding assembly, enabling the palletizer 601 to place the next assembly into an empty placement slot 605.

[0082] The palletizer 601 described in this embodiment includes a third left-right motion module, the moving part of which can move left and right, a third up-down motion module is provided on the moving part of the third left-right motion module, the moving part of the third up-down motion module can move up and down, a third front-back motion module is provided on the moving part of the third up-down motion module, the moving part of the third front-back motion module can move back and forth, and a third clamping mechanism is provided on the moving part of the third front-back motion module.

[0083] Since the base 101, intermediate body 102 and top cover 103 are assembled, the assembly cannot be removed by suction cup. In this embodiment, a third clamping mechanism is set to clamp the assembly. The movement and placement of the assembly are realized by the cooperation of the third left and right movement module, the third up and down movement module and the third front and back movement module.

[0084] In this embodiment, the support plate 604 is configured as three pieces.

[0085] In this embodiment, each support plate 604 is provided with three placement slots 605.

[0086] In this embodiment, three support plates 604 are provided, and each support plate 604 is provided with three placement slots 605, so that nine assemblies can be placed.

[0087] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. An assembly module for a PLC-controlled production line training system, characterized in that, The device includes a gantry material handling device (401) and a turntable assembly (402). The turntable assembly (402) is provided with multiple placement bodies (403). The gantry material handling device (401) can place the base (101), intermediate body (102) or top cover (103) on the qualified product placement body (304) onto the placement body (403) on the left side of the turntable assembly (402) for assembly. The turntable assembly (402) can rotate to drive the assembled body to the right side of the turntable assembly (402).

2. The assembly module of a PLC-controlled production line training system according to claim 1, characterized in that, The turntable assembly (402) includes a motor (404) and a turntable (405). The turntable (405) is connected to the output shaft of the motor (404). A plurality of placement bodies (403) are disposed on the top wall of the turntable (405) and are distributed circumferentially along the axis of the turntable (405).

3. The assembly module of a PLC-controlled production line training system according to claim 2, characterized in that, Multiple placement bodies (403) are evenly distributed circumferentially along the axis of the turntable (405).

4. The assembly module of a PLC-controlled production line training system according to claim 1, characterized in that, The placement body (403) includes a second placement plate and two second side plates. The two second side plates are connected to the second placement plate. The base (101), intermediate body (102) or top cover (103) can be placed on the second placement plate and contact the inner walls of the two second side plates.

5. The assembly module of a PLC-controlled production line training system according to claim 4, characterized in that, The inner walls of the two second side plates are curved.

6. The assembly module of a PLC-controlled production line training system according to claim 1, characterized in that, The gantry material handling device (401) includes a second support frame (406), on which a second left and right motion module is provided. The moving part of the second left and right motion module can move left and right. A second up and down motion module is provided on the moving part of the second left and right motion module. The moving part of the second up and down motion module can move up and down. A second clamping mechanism is provided on the moving part of the second up and down motion module.

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