CN-115525025-B - User programmable PLC serial port communication expansion module

CN115525025BCN 115525025 BCN115525025 BCN 115525025BCN-115525025-B

Abstract

The invention discloses a Programmable Logic Controller (PLC) serial port communication expansion module which comprises a shell, a data connector is fixedly connected to the side surface of the shell, a front cover plate is fixedly connected to the side surface of the shell, a wire connector is fixedly connected to the lower surface of the shell, a net wire slot is formed in the lower surface of the shell, a vent hole is formed in the side surface of the shell, a stabilizing device is arranged on the lower surface of the wire connector, a guide device is arranged on one side of the shell, a mounting groove is formed in the side surface of the shell, a contact device is arranged on the inner wall of the shell, the stabilizing device comprises a guide rail, the guide rail is fixedly connected with the surface of the guide connector, guide posts are fixedly connected to the inner wall of the guide rail, a plurality of part structures in the device are matched with each other, the guide wire is stably clamped, the position of the guide wire after clamping is limited, the fixing difficulty of the guide wire is reduced, convenience is provided for the mounting operation of an installer, and the capability of preliminarily limiting the guide wire by the expansion module is realized.

Inventors

LU XIN
GU BIN

Assignees

南通工埔林格教育科技有限公司

Dates

Publication Date: 20260505
Application Date: 20220617

Claims (3)

1. The PLC serial port communication expansion module capable of being programmed by a user is characterized by comprising a shell (1), wherein a data connector (2) is fixedly connected to the side surface of the shell (1), a front cover plate (3) is fixedly connected to the side surface of the shell (1), a wire connector (4) is fixedly connected to the lower surface of the shell (1), a network cable slot (5) is formed in the lower surface of the shell (1), and a vent hole is formed in the side surface of the shell (1); The wire connector is characterized in that a stabilizing device (6) is arranged on the lower surface of the wire connector (4), a guiding device (7) is arranged on one side of the shell (1) located at the vent hole, a mounting groove is formed in the side surface of the shell (1), and a contact device (8) is arranged on the inner wall of the shell (1) located at the mounting groove; The fixing device (6) comprises a guide rail (61), the guide rail (61) is fixedly connected with the surface of the wire connector (4), a guide post (62) is fixedly connected to the inner wall of the guide rail (61), a limit spring (63) is fixedly connected to the inner wall of the guide rail (61), a sliding block (64) is slidably connected to the inner wall of the guide rail (61), a shifting block (65) is fixedly connected to the surface of the sliding block (64), a connecting frame (66) is fixedly connected to the side surface of the sliding block (64), a clamping groove is formed in the inner wall of the connecting frame (66), and a rubber gasket (67) is fixedly connected to the inner wall of the connecting frame (66) located in the clamping groove; The number of the connecting frames (66) is two, the two connecting frames (66) are symmetrically arranged on the left side and the right side of the sliding block (64), the connecting frames (66) are abutted against the surface of the wire connector (4), the rubber gasket (67) is abutted against the surface of the connecting frames (66), the guiding device (7) comprises a limiting ring (71), the limiting ring (71) is fixedly connected with the side surface of the shell (1), one side, far away from the shell (1), of the limiting ring (71) is fixedly connected with a guiding air pipe (72), the surface, far away from the shell (1), of the limiting ring (71) is fixedly connected with an adjusting disc (73), one side, located on the vent hole, of the shell (1) is fixedly connected with a fixing ring (74), a sliding groove is formed in the surface of the fixing ring (74), the fixing ring (74) is slidably connected with a pressing frame (75) on the inner wall of the sliding groove, the inner wall of the pressing frame (75) is fixedly connected with a reset spring (76), one side, far away from the shell (1), of the pressing frame (75) is fixedly connected with a guiding air pipe (72), the surface, which is fixedly connected with an adjusting disc (73) on the surface, which is fixedly connected with the fixing ring (73) of the fixing ring (73) on the surface, which is fixedly connected with the fixing ring (73) of the vent hole, the fixing rings (74) are abutted against the surface of the guide air pipe (72), the fixing rings (74) are abutted against the surface of the adjusting disc (73), the number of the pressing frames (75) is two, the two pressing frames (75) are symmetrically arranged left and right relative to the limiting rings (71), the pressing frames (75) penetrate through the sliding grooves, the reset springs (76) are fixedly connected with the inner walls of the sliding grooves, the bolts (77) penetrate through the sliding grooves, and the bolts (77) are spliced with the inner walls of the adjusting holes; The contact device (8) comprises a supporting frame (81), wherein the supporting frame (81) is fixedly connected with the inner wall of a mounting groove, a connecting rod (82) is fixedly connected to the inner wall of the supporting frame (81), a first spring (83) is fixedly connected to the inner wall of the supporting frame (81), limiting holes are formed in the surfaces of the connecting rod (82), a carrying frame (84) is rotatably connected to the inner wall of the limiting holes, a restraining groove is formed in one side, far away from the shell (1), of the supporting frame (81), a second spring (85) is fixedly connected to the inner wall, far away from the supporting frame (81), of the supporting frame (81), a supporting block (86) is fixedly connected to the surface, close to the shell (1), of the supporting block (86), two limiting blocks (87) are fixedly connected to one side, close to the shell (1), of the two connecting rods (82) are arranged in an up-down symmetrical mode, the first spring (83) is fixedly connected with the surface of the carrying frame (84), the surfaces of the carrying frame (84) are fixedly connected with the surfaces of the restraining block (84), the two limiting blocks (87) are symmetrically arranged on the surfaces of the supporting frame (87), the connecting rod (82) is hinged with the inner wall of the rotating hole.
2. The Programmable Logic Controller (PLC) serial port communication expansion module according to claim 1, wherein the number of the guide posts (62) is two, the two guide posts (62) are symmetrically arranged on the left and right sides of the guide rail (61), the limiting spring (63) is sleeved on the surface of the guide post (62), the surface of the sliding block (64) is provided with a storage groove, and the limiting spring (63) is fixedly connected with the inner wall of the storage groove.
3. The Programmable Logic Controller (PLC) serial port communication expansion module according to claim 2, wherein the sliding blocks (64) are arranged through the guide rail (61), round holes are formed in the inner walls of the containing grooves of the sliding blocks (64), the guide posts (62) are arranged through the round holes, the shifting blocks (65) are slidably connected with the inner walls of the guide rail (61), the number of the shifting blocks (65) is two, and the two shifting blocks (65) are symmetrically arranged on the left side and the right side of the sliding blocks (64).

Description

User programmable PLC serial port communication expansion module Technical Field The invention relates to the technical field of active communication expansion modules, in particular to a Programmable Logic Controller (PLC) serial port communication expansion module programmable by a user. Background The PLC is a digital operation electronic system designed for application in industrial environment, and can load control instruction into memory at any time for storage and execution, the programmable controller consists of CPU, instruction and data memory, I/O interface, power source, digital-to-analog converter and other functional units. Early programmable logic controllers were named programmable logic controllers because of their logic control functions, and as these computer modules with simple functions have been developed, various types of functions including logic control, timing control, analog control, multi-machine communication, etc., and the names have been changed to programmable controllers (ProgrammableController), but because of the conflict between its shorthand PC and the shorthand of personal computers (personalgluter), and for custom reasons, people have often used the shorthand of programmable logic controllers, and still use the abbreviation of PLC. The basic structure of PCL can be divided into a power supply for converting alternating current into direct current required by the interior of PLC, a central processing unit for processing and running user program, performing logic and mathematical operation and controlling the whole system to coordinate, a memory for storing system program, user program, logic variable and other information, an input unit for receiving signals transmitted by a master control element and a detection element, and an output unit for transmitting the output signal of PLC to controlled equipment and driving an execution element of the controlled equipment. However, the existing processing module has the following disadvantages: In daily use, a PLC serial port communication expansion module such as CN203012439U is found, the existing expansion module is mostly supported in an auxiliary mode by an installer when wires are connected, in the installation process, the installer is difficult to operate a subsequent tool due to the fact that the installer is supported in a single hand, the assembly efficiency of the expansion module is low, the existing expansion module is positioned and guided by ventilation holes of the expansion module when the existing expansion module dissipates heat, the heat dissipation air flow of the expansion module is easily blocked due to the fact that the heat dissipation direction of the air flow is fixed, the heat dissipation efficiency of the expansion module is low, meanwhile, the existing expansion module is directly contacted with an installation frame when the installation is carried out, and in the installation process, fine deviation is easy to occur to components in the expansion module due to impact force generated by direct contact, so that the fault rate of the expansion module is improved. Therefore, we propose a PLC serial communication expansion module that is programmable by a user, so as to solve the above-mentioned problems. Disclosure of Invention The invention aims to provide a programmable PLC serial port communication expansion module, which is characterized in that a plurality of part structures in the device are mutually matched through a stabilizing device connected with a wire connector to stably clamp a wire, the fixed difficulty of the wire is reduced because the clamped position of the wire is limited, the installation operation of an installer is facilitated, and the capability of the expansion module for preliminarily limiting the wire is realized, so that the problems of the background technology are solved. The technical scheme includes that the PLC serial port communication expansion module comprises a shell, wherein a data connector is fixedly connected to the side surface of the shell, a front cover plate is fixedly connected to the side surface of the shell, a wire connector is fixedly connected to the lower surface of the shell, a network cable slot is formed in the lower surface of the shell, and a vent hole is formed in the side surface of the shell; The lower surface of the wire connector is provided with a stabilizing device, one side of the shell, which is positioned on the vent hole, is provided with a guiding device, the side surface of the shell is provided with a mounting groove, and the inner wall of the shell, which is positioned on the mounting groove, is provided with a contact device; The fixing device comprises a guide rail, the guide rail is fixedly connected with the surface of a wire connector, a guide column is fixedly connected to the inner wall of the guide rail, a limit spring is fixedly connected to the inner wall of the guide rail, a sliding block is slidably connected to the