CN211997516U

CN211997516U - PLC communication device suitable for annular or reciprocating type motion production line

Info

Publication number: CN211997516U
Application number: CN202020245840.5U
Authority: CN
Inventors: 房昆峰
Original assignee: Qingdao Aolipu Automation and Control System Co Ltd
Current assignee: Qingdao Aolipuzhi Intelligent Industrial Technology Co ltd
Priority date: 2020-03-03
Filing date: 2020-03-03
Publication date: 2020-11-24
Anticipated expiration: 2030-03-03

Abstract

The embodiment of the utility model provides a PLC communication device suitable for annular or reciprocal type motion production line is applied to on the electrical home appliances handling system, and handling system includes the track, and the track inboard is equipped with wiping line unit, be equipped with a plurality of mobilizable transport nacelle on the track, a plurality of transport nacelles pass through motor drive and are in move on the track, communication device includes: the system comprises a PLC main station arranged at a fixed end, a first guide rail amplifier in communication connection with the PLC main station through ProfiBus, a slave station arranged in each carrying nacelle and a second guide rail amplifier in communication connection with each slave station through ProfiBus, wherein the first guide rail amplifier and each second guide rail amplifier are in communication connection through the trolley line unit. The method is used for solving the problem that the mobile assembly of the motion production line in the current factory cannot carry out reliable communication.

Description

PLC communication device suitable for annular or reciprocating type motion production line

Technical Field

The utility model relates to a PLC communication technology field, in particular to PLC communication device suitable for annular or reciprocal type motion production line.

Background

The structure for supplying power to equipment by using a trolley line widely exists in a household electric production line, a factory self-conveying system and a workshop hoisting overhead traveling crane system, and the structure is characterized in that a current collector and the trolley line which is preinstalled in an annular or reciprocating track are arranged on a moving assembly to obtain power in moving contact, so that the moving assembly is driven by the power to various electrical equipment in a motion state, the power taking mode is a mature technology, and the structure has various forms of application in many occasions.

The trolley line structure can be used for transmitting electric energy and also transmitting a plurality of simple digital quantity signals, but due to the limitations of various factors such as the sizes of the rails and the trolley lines, the installation requirements, economic indexes and the like, the trolley lines on the rails can only adopt eight digital quantity signals at most, so that the trolley lines on the rails can only transmit four digital quantity signals at most except four power supplies, and more complex analog quantity and high-speed pulse signals cannot be transmitted at all, so that the development of the production line function is greatly limited, and the automatic upgrade and modification of a factory are influenced;

if a group of PLC substations can be configured and installed on the production line moving assembly, the substations can be in bus communication with a main PLC at the fixed end of the production line, and any automatic design can be realized on the moving assembly due to the expansion capability of a PLC substation module.

Communication forms between the master station and the slave stations of different brands of PLCs are different, such as ProfiBus, Profinet, CC-LINK, EtherNet, CAN and the like, are selected from reliability and economy, and ProfiBus is the best choice;

however, the method of ProfiBus communication through the sliding contact of the sliding contact line and the current collector is a special and difficult subject, because the sliding contact line of the communication line and the sliding contact line of the power supply line are laid in parallel in the track and are very close to each other, only insulation exists between the sliding contact line and the power supply line, the line body is exposed and is not protected by a shielding layer, great impedance exists between the sliding contact line and the sliding contact of the current collector (compared with the conventional communication method), and because the contact effect in the sliding process is unstable and other factors, the success rate and the reliability of the communication are difficult to guarantee.

SUMMERY OF THE UTILITY MODEL

The utility model provides a PLC communication device suitable for annular or reciprocal type motion production line for the removal subassembly of solving the motion production line in the present mill can't carry out the problem of reliable communication.

In order to solve the technical problem, the utility model discloses a technical scheme does:

the embodiment of the utility model provides a PLC communication device suitable for annular or reciprocal type motion production line is applied to on the electrical home appliances handling system, handling system includes the track, the track inboard is equipped with wiping line unit, be equipped with a plurality of mobilizable transport nacelle on the track, a plurality of transport nacelles pass through motor drive and are in move on the track, communication device includes: the system comprises a PLC main station arranged at a fixed end, a first guide rail amplifier in communication connection with the PLC main station through ProfiBus, a slave station arranged in each carrying nacelle and a second guide rail amplifier in communication connection with each slave station through ProfiBus, wherein the first guide rail amplifier and each second guide rail amplifier are in communication connection through the trolley line unit.

Preferably, the number of the second rail amplifiers and the number of the carrying pods are the same, and the number of the carrying pods is 4.

Preferably, the trolley line unit comprises a plurality of trolley lines, and the communication length of the trolley lines is less than 70 meters.

Preferably, the trolley line resistance value is 0.744 Ω/km.

Preferably, the PLC master station is Siemens S7-417.

Preferably, the slave station is an ET200S slave station I/O module.

Preferably, control knobs, sensors and display indicator lights are integrated on the transport pod.

Adopt above-mentioned technical scheme, this PLC communication device is applied to on the electrical home appliances handling system, and this handling system includes the track, and the track inboard is equipped with wiping line unit, is equipped with a plurality of mobilizable transport nacelle on the track, and a plurality of transport nacelle pass through motor drive and move on the track, and this communication device includes: the system comprises a PLC main station arranged at a fixed end, a first guide rail amplifier in communication connection with the PLC main station through ProfiBus, a slave station arranged in each transport pod and a second guide rail amplifier in communication connection with each slave station through ProfiBus, wherein the first guide rail amplifier and each second guide rail amplifier are in communication connection through a trolley line unit, and by using a guide rail amplifier (PRB (Power RailBooster)), signal data of ProfiBus-DP can be safely transmitted through a physical conductor of a trolley line structure, and ProfiBus communication signals are specially modulated to become anti-interference signals and are coupled with a sliding conductor. Each carrying nacelle is also provided with a guide rail amplifier PRB, and after receiving a special modulation signal in sliding contact from a current collector and a sliding contact line, the special modulation signal is converted into a communication signal which can be received by a slave station in the nacelle by the guide rail amplifier PRB, so that the aim of communication between the master station PLC and the slave station PLC module is fulfilled.

Drawings

Fig. 1 is a schematic structural diagram of a PLC communication device suitable for an annular or reciprocating motion production line according to an embodiment of the present invention.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

In the description of the embodiments herein, "/" means "or" unless otherwise specified, for example, a/B may mean a or B; "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of the present application, "a plurality" means two or more than two.

In the following, the terms "first", "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present application, "a plurality" means two or more unless otherwise specified.

The embodiment of the utility model provides a PLC communication device suitable for annular or reciprocal type motion production line, as shown in FIG. 1, on being applied to household electrical appliances handling system, handling system includes the track, and the track inboard is equipped with wiping line unit, is equipped with a plurality of mobilizable transport nacelle on the track, and a plurality of transport nacelles pass through motor drive and move on the track, and communication device includes: the PLC main station is arranged at the fixed end, the first guide rail amplifier is in communication connection with the PLC main station through ProfiBus, the slave station is arranged in each carrying nacelle, the second guide rail amplifier is in communication connection with each slave station through ProfiBus, and the first guide rail amplifier and each second guide rail amplifier are in communication connection through a trolley line unit.

In a preferred embodiment, the number of the second rail amplifiers is equal to the number of the transport pods, and the number of the transport pods is 4.

As a preferred embodiment, a special semi-finished product storage cargo area is arranged on the pod for containing materials, a plurality of control knobs, sensors and a plurality of display indicator lamps are integrated on the pod, five transfer positioning points are arranged in the operation period of the pod, four different pods can trigger different limit switches of each positioning point, and then the specific area position of the pod is judged through signals of the positioning point limit switches obtained by a PLC master station, so that coordinated management is realized to ensure that the pod does not collide with the front pod during operation; the running interval positions of the four movable pods can be obtained through the limit switch signals of the five transfer positioning points, meanwhile, the running states of the walking motors are transmitted to the PLC master station through ProfiBus communication by the PLC slave station modules of the movable pods, the four movable pods can independently run on the track in a circulating mode through related feedback signals and action execution programs of the PLC master station, meanwhile, according to production requirements, through editing related control programs, the system automatically controls the motion of the movable pods, corresponding semi-finished materials are carried to each workbench, the assembly of workers is facilitated, and the running efficiency is improved.

Preferably, the PLC Master station is Siemens S7-417.

Preferably, the slave station is an ET200S slave station I/O module.

In addition, the scram button of installation on the activity nacelle, start the stop button, manual automatic switch button, all kinds of input signals such as sensor signal all can be fast through PLC slave station module, harmless reliable transmission gives the PLC main website, then the PLC main website is according to the design of procedure, all kinds of peripheral hardware devices are controlled through PLC slave station module to the output signal that will correspond, including all kinds of pilot lamps, the walking motor, buzzing warning etc, can also utilize SIEMENS's diagnostic function, carry out real-time diagnosis to the hardware and the software trouble of equipment, in time know fault information, and do timely processing to the trouble, equipment down time has been saved, the fault rate of equipment has been reduced.

In a preferred embodiment, the trolley line unit comprises a plurality of trolley lines, and the communication length of the trolley lines is less than 70 meters. A high quality trolley line can be used.

Preferably, the trolley line resistance value is 0.744 Ω/km.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.

Claims

1. A PLC communication device suitable for an annular or reciprocating motion production line is applied to a household appliance carrying system, the carrying system comprises a track, a trolley line unit is arranged on the inner side of the track, a plurality of movable carrying pods are arranged on the track, the plurality of carrying pods run on the track through motor driving, and the communication device comprises: the system comprises a PLC main station arranged at a fixed end, a first guide rail amplifier in communication connection with the PLC main station through ProfiBus, a slave station arranged in each carrying nacelle and a second guide rail amplifier in communication connection with each slave station through ProfiBus, wherein the first guide rail amplifier and each second guide rail amplifier are in communication connection through the trolley line unit.

2. The PLC communication device adapted for use in a ring or reciprocating type motion production line according to claim 1, wherein the number of the second rail amplifiers and the carrier pods is the same, and the number of the carrier pods is 4.

3. The PLC communication device adapted for use in a ring or reciprocating type motion production line according to claim 1, wherein the trolley line unit comprises a plurality of trolley lines, and the trolley line communication length is less than 70 m.

4. The PLC communication device adapted for use in a ring or reciprocating type moving production line according to claim 3, wherein the trolley wire resistance value is 0.744 Ω/km.

5. The PLC communication device adapted for use in a ring or shuttle type moving production line according to claim 1, wherein the PLC master station is siemens S7-417.

6. The PLC communication device adapted for use in a ring or reciprocating type motion production line according to claim 1, wherein said slave station is an ET200S slave station I/O module.

7. The PLC communication device for a ring or reciprocating type motion production line according to claim 1, wherein the handling pod has integrated control knobs, sensors and display indicator lights.