CN215642380U

CN215642380U - PLC product testing device

Info

Publication number: CN215642380U
Application number: CN202121146717.9U
Authority: CN
Inventors: 饶思建; 罗伟标; 唐佐
Original assignee: Dongguan Muniao Automation Co ltd
Current assignee: Dongguan Muniao Automation Co ltd
Priority date: 2021-05-26
Filing date: 2021-05-26
Publication date: 2022-01-25
Anticipated expiration: 2031-05-26

Abstract

The utility model discloses a PLC product testing device which comprises a testing bent frame and a plurality of testing installation seats arranged on the testing bent frame, wherein a voltmeter is arranged corresponding to each testing installation seat, a PLC host is also arranged on the testing bent frame and correspondingly connected with pins of a PLC tester on the testing installation seats through connecting wires, and the PLC host and the PLC tester mutually transmit switching value signals to detect all input and output points. The testing method adopts a testing bent frame form, and tests are carried out after programming through a PLC host, a touch screen and the like in the field of automation, 1) the dependence of the previous tests on the number of people is reduced, the testing time of products is greatly shortened, and the qualification rate of the tests is improved; 2) the categories of bad products can be distinguished, and the maintenance efficiency of technicians is improved; the enterprise expense is saved; 3) the operation is simple and easy to learn, and the applicability is strong.

Description

PLC product testing device

Technical Field

The utility model relates to the technical field of PLC product production, in particular to a PLC product testing device.

Background

The automated control is a relatively popular and rapidly developing technology in the technical application field, mainly converts a test behavior driven by human into a process executed by a machine, and in modern industrial production, various inspections are involved, and generally, the work is continuous mass production and has very high requirements on quality. Particularly, in the case of producing the PLC, the product detection is usually performed by writing the product into a basic control program and then detecting whether the product has an input/output signal, a voltage/current, or the like by using a multimeter, but in some special cases, the product cannot be continuously and stably performed by manpower at all.

On the other hand, the existing PLC detection method has the defects of large resource consumption, overlong product detection time and low inspection qualified rate in the aspect of manpower use. With the increasing competition of the industry, especially, PLC products are mostly used for industrial automation control, once a quality problem occurs to a product, a production line of a user is stopped to cause a huge economic loss, so that any defect is not allowed to exist in the control of the product quality, and 100% of inspection yield (namely, zero defect) needs to be ensured to ensure the reliability of the product operation.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a PLC product testing device and aims to solve the technical problems of high labor cost and low testing efficiency and qualification rate of the existing PLC product testing mode.

In order to solve the technical problems, the technical scheme of the utility model is as follows:

a PLC product testing device comprises a testing bent frame and a plurality of testing installation seats arranged on the testing bent frame, wherein a voltmeter is arranged corresponding to each testing installation seat, a PLC host is further arranged on the testing bent frame and correspondingly connected with pins of a PLC testing machine on the testing installation seats through connecting wires, and the PLC host and the PLC testing machine mutually transmit switching value signals to detect all input and output points.

Further, a touch screen is further arranged on the test bent frame, and the touch screen is connected with the PLC host and used for inputting a control instruction to the PLC test machine and displaying a transmission dead pixel of the PLC test machine.

Furthermore, a change-over switch is further arranged on the test bent frame and used for changing over the connection state of the PLC host and each test mounting seat.

Optionally, the voltmeter and the pin of the PLC tester are in contact connection by switching a metal probe.

Furthermore, the PLC product testing device also comprises an input device end, wherein the input device end is connected with the PLC host and is used for loading a testing instruction to the PLC host.

The utility model has the beneficial effects that:

the PLC product testing device adopts a testing bent frame form, and tests after programming through a PLC host, a touch screen and the like in the field of automation, 1) the dependence of the previous test on the number of people is reduced, the product testing time is greatly shortened, and the qualified rate of the test is improved; 2) the categories of bad products can be distinguished, and the maintenance efficiency of technicians is improved; the enterprise expense is saved; 3) the operation is simple and easy to learn, and the applicability is strong.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a first PLC product testing device of the present invention;

FIG. 2 is a schematic structural diagram of a second PLC product testing device of the present invention;

FIG. 3 is a schematic diagram of a circuit connection of a test unit according to the present invention;

FIG. 4 is a flow chart of the PLC product testing device of the present invention;

in the figure, 10-PLC product testing device, 11-testing bent frame, 12-testing installation seat, 13-connecting wire, 14-change-over switch,

20-a PLC host, 30-a touch screen, 40-a voltmeter, 50-an input equipment end and 60-a PLC tester.

Detailed Description

The following further describes embodiments of the present invention with reference to the 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 involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Example 1

As shown in fig. 1 and 3, an embodiment of the present invention provides a PLC product testing apparatus 10, including a testing bent 11, a plurality of testing mounts 12 disposed on the testing bent 11, a voltmeter 40 disposed corresponding to each of the testing mounts 12, and a PLC host 20 disposed on the testing bent 11, where the PLC host 20 is correspondingly connected to pins of a PLC testing machine 60 on the testing mounts 12 through a connection line 13, and the PLC host 20 and the PLC testing machine 60 transmit switching signals to detect all input/output points.

Specifically, the test bent 11 is further provided with a touch screen 30, and the touch screen 30 is connected to the PLC host 20 and configured to input a control instruction to the PLC test machine 60 and display a transmission dead point of the PLC test machine 60.

When the PLC tester is used, a testing bent frame is adopted, a PLC host, a touch screen, a metal probe, a voltmeter and the like are integrated, a testing program instruction is written in the PLC host, and all input and output points are detected by enabling two PLCs (the PLC host and the PLC tester) to mutually transmit switching value signals. The test frame is controlled through a touch screen (a human-computer interface), and the transmission dead pixel of the product in the detection is reflected to indicate the dead pixel. Meanwhile, whether the PLC test machine can communicate with the touch screen or not is detected, whether the product voltage is normal or not is displayed through the integrated voltmeter, and the detection accuracy is ensured by automatically circulating for 3 times.

The test bent 11 is further provided with a switch 14, and the switch 14 is used for switching a connection state between the PLC host 20 and each of the test mounting seats 12.

Optionally, the voltmeter 40 is in contact connection with the pin of the PLC testing machine 60 through a metal probe.

As shown in fig. 2, the PLC product testing apparatus 10 further includes an input device terminal 50, where the input device terminal 50 is connected to the PLC host 20 and is configured to load a test instruction to the PLC host 20.

As shown in fig. 4, the specific test flow of the PLC product testing device 10 is as follows:

1) putting the PLC product to be tested into a test bent frame, writing a program to the PLC product, and simultaneously seeing the voltage on a voltmeter, wherein any NG of the PLC product and the voltmeter is determined to be bad; 2) accessing the tested PLC product to a touch screen for control, wherein the communication is failed, otherwise, the communication is poor; 3) sending a mutual transmission switching value signal instruction to a tested Product (PLC) and the PLC on the test rack through a touch screen, wherein if a certain input point of the product cannot receive the instruction, the corresponding input point has a problem, and if a certain output point of the product cannot send the instruction, the corresponding output point has a problem, so that the automatic circulation is performed for 3 times; 4) and all the tests are finished without problems, and the product is qualified.

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 these embodiments without departing from the principles and spirit of the utility model, and the scope of protection is still within the scope of the utility model.

In the description of the present patent application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", "row", "column", etc., indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience of describing and simplifying the present patent application, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the novel aspects of the present patent application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed 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 at least one such feature. In the description of the present patent application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.

In the present patent application, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," "secured," and the like are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present patent can be understood by those skilled in the art according to specific situations.

In the patent of the utility model, unless otherwise explicitly specified or limited, a first feature "on" or "under" a second feature may be directly contacted with the first and second features or indirectly contacted with the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Claims

1. a PLC product testing device, it is characterized in that, comprise a test rack, a plurality of test mounting seats arranged on the described test rack, corresponding to each described test mounting seat is provided with a voltmeter, in the described test The bent frame is also provided with a PLC host, the PLC host and the pins of the PLC testing machine on the test mounting base are correspondingly connected by connecting wires, and the PLC host and the PLC testing machine transmit switching signals to each other to detect All input and output points.

2. The PLC product testing device according to claim 1, wherein a touch screen is also provided on the test rack, and the touch screen is connected with the PLC host for inputting control instructions to the PLC test machine And display the transmission dead point of the PLC tester.

3. The PLC product testing device according to claim 1, wherein a switch is also provided on the test rack, and the switch is used to switch the PLC host and each of the test mounts. Connection Status.

4 . The PLC product testing device according to claim 1 , wherein the voltmeter and the pins of the PLC testing machine are switched and connected by metal probes. 5 .

5. The PLC product testing device according to claim 1, wherein the PLC product testing device further comprises an input device terminal, and the input device terminal is connected to the PLC host for loading into the PLC host Test instructions.